LTE Performance Parameters

LTE Performance Parameters

Contents 1 Uplink Resource Allocation ........................................................................................................ 5 1.1 SRS Resource Allocation ................................................................................................................................. 5 1.1.1 SrsSubframeCfg (SRS subframe configuration) ..................................................................................... 5 1.1.2 SrsSubframeRecfSwitch (SRS subframe tree reconfiguration switch) ................................................... 6 1.1.3 AnSrsSimuTrans (SRS ACK/NACK simultaneous transmission) .......................................................... 6 1.2 Uplink Scheduling ............................................................................................................................................ 7 1.2.1 Scheduling in Each TTI .......................................................................................................................... 7 1.2.2 Physical Layer Measurement Result Processing ................................................................................... 10

2 Downlink Resource Allocation ................................................................................................ 12 2.1 PUCCH Resource Allocation ......................................................................................................................... 12 2.1.1 DeltaShift (Delta Shift) ......................................................................................................................... 12 2.1.2 SriAdaptiveSwitch (SRI adaptive switch) ............................................................................................. 13 2.1.3 FixedSriPeriod (SRI Period) ................................................................................................................. 13 2.1.4 PucchSwitch (PUCCH algorithm switch) ............................................................................................. 14 2.1.5 SriLowLoadThd (SRI Low Load Threshold) ........................................................................................ 15 2.2 Downlink CQI Adjustment............................................................................................................................. 16 2.2.1 CqiAdjAlgoSwitch (CQI adjust algorithm switch) ............................................................................... 16 2.3 Downlink Scheduling ..................................................................................................................................... 16 2.3.1 DlschPriorityFactor (Downlink scheduling priority factor) .................................................................. 16 2.3.2 DlMinGbr (Downlink MinGBR) .......................................................................................................... 17 2.3.3 DlschStrategy (Downlink scheduling Strategy) .................................................................................... 18 2.3.4 BtServiceWeight (Bt Service Weight) ................................................................................................... 18 2.3.5 OtherServiceWeight (Other Service Weight) ........................................................................................ 19 2.4 PDCCH Resource Allocation ......................................................................................................................... 20 2.4.1 CCEUseRatio (CCE use ratio) .............................................................................................................. 20

3 Downlink ICIC ............................................................................................................................ 22 3.1 DlIcicSwitch (DlIcic algorithm switch) ......................................................................................................... 22 3.2 BandMode (Downlink band division scheme) ............................................................................................... 22 3.3 A3Offset (Downlink ICIC A3 offset) ............................................................................................................. 23 3.4 Hysteresis (DownLink ICIC measurement hysteresis) .................................................................................. 24 3.5 TimeToTrigger (DownLink ICIC measurement time to trigger) .................................................................... 24 3.6 MaxReportCellNum (Downlink ICIC measurement max report cell number) .............................................. 25

3.7 ReportInterval (Downlink ICIC measurement report interval) ...................................................................... 26 3.8 ReportAmount (Downlink ICIC measurement report amount) ...................................................................... 26 3.9 TriggerQuantity (DownLink ICIC measurement trigger quantity)................................................................. 27 3.10 ReportQuantity (DownLink ICIC measurement report quantity)................................................................. 28

4 Downlink MIMO ........................................................................................................................ 29 4.1 MIMOADAPTIVESWITCH (MIMO adaptive switch) ................................................................................. 29 4.2 FIXEDMIMOMODE (Fixed MIMO mode) .................................................................................................. 29 4.3 MAXMIMORANKPARA (maximum number of MIMO layers) .................................................................. 30

5 Mobility Control ......................................................................................................................... 31 5.1 Intra-RAT Handover ....................................................................................................................................... 31 5.1.1 Handover Algorithm Switch ................................................................................................................. 31 5.1.2 Intra-RAT Handover Common Parameter ............................................................................................. 35 5.1.3 Intra-Frequency Handover .................................................................................................................... 37 5.1.4 Measurement-Related Parameters ......................................................................................................... 44 5.2 Cell Reselection Parameters ........................................................................................................................... 46 5.2.1 QRxLevMin (Minimum required RX level) ......................................................................................... 46 5.2.2 QRxLevMinOffset (Minimum required RX level offset) ..................................................................... 46 5.2.3 QQualMin (Minimum required RX quality level) ................................................................................ 47 5.2.4 QQualMinOffset (Minimum required RX quality level offset) ............................................................ 48 5.2.5 SIntraSearch (Threshold for intra frequency measurements) ................................................................ 48 5.2.6 ThrshServLow (Serving frequency lower priority threshold) ............................................................... 49 5.2.7 SNonIntraSearch (Threshold for EUTRAN inter-frequency and inter-RAT measurements) ................ 50 5.2.8 SIntraSearchQ (RSRQ Threshold for intra frequency measurements).................................................. 51 5.2.9 CellReselPriority (Cell reselection priority) ......................................................................................... 51 5.2.10 QRxLevMin (Minimum required RX level) ....................................................................................... 52 5.2.11 QqualMin (Minimum RX signal quality) ............................................................................................ 53 5.2.12 MeasBandWidth (Measurement bandwidth) ....................................................................................... 53 5.2.13 CellQoffset (Cell offset) ...................................................................................................................... 54 5.2.14 QoffsetFreq (Frequency offset) ........................................................................................................... 55 5.2.15 Qhyst (Hysteresis value for ranking criteria) ...................................................................................... 55 5.2.16 TReselEutran (Cell reselection timer value for EUTRAN) ................................................................. 56 5.2.17 PMax (Max transmit power allowed) in CellResel ............................................................................. 57 5.2.18 TreselectionHrpd (Cell reselection timer for HRPD) .......................................................................... 58

6 Load Control................................................................................................................................. 59 6.1 Load Control Algorithm ................................................................................................................................. 59 6.1.1 UlLdcSwitch (Switch for the Uplink Load Control Algorithm) ........................................................... 59 6.1.2 DlLdcSwitch (Switch for the Downlink Load Control Algorithm) ....................................................... 60 6.2 Admission Control ......................................................................................................................................... 60 6.2.1 GbrUsageSwitch (Switch for Detecting the Number of PRBs Occupied by GBR Services) ................ 60 6.2.2 GbrRbUsedHighThd (GBR used resource high proportion threshold) ................................................. 61 6.2.3 GbrRbUsedLowThd (GBR used resource low proportion threshold) ................................................... 62

6.2.4 DlRbLowThd (Downlink RB used ratio low threshold) ....................................................................... 62 6.2.5 DlRbHighThd (Downlink RB used ratio high threshold) ..................................................................... 63 6.2.6 UlRbLowThd (Uplink RB used ratio low threshold) ............................................................................ 64 6.2.7 UlRbHighThd (Uplink RB used ratio high threshold) .......................................................................... 64 6.2.8 MaxNonGBRBearerNum (Non-GBR max bearer number) .................................................................. 65 6.3 Random Access Control ................................................................................................................................. 66 6.3.1 RootSequenceIdx (Root sequence index) ............................................................................................. 66 6.3.2 PreambleFmt (Preamble format) ........................................................................................................... 66 6.3.3 HighSpeedFlag (High speed flag) ......................................................................................................... 67 6.4 Mapping from SIBs to SI Messages ............................................................................................................... 67 6.4.1 SiMapSwitch (SIB mapping SI algorithm switch) ................................................................................ 67 6.4.2 Sib2Period (SIB2 period) ...................................................................................................................... 68 6.4.3 Sib3Period (SIB3 period) ...................................................................................................................... 69 6.4.4 Sib4Period (SIB4 period) ...................................................................................................................... 70 6.4.5 Sib5Period (SIB5 period) ...................................................................................................................... 70 6.4.6 Sib6Period (SIB6 period) ...................................................................................................................... 71 6.4.7 Sib7Period (SIB7 period) ...................................................................................................................... 72 6.4.8 Sib8Period (SIB8 period) ...................................................................................................................... 72 6.4.9 Sib10Period (SIB10 period) .................................................................................................................. 73 6.4.10 Sib11Period (SIB11 period) ................................................................................................................ 73

7 Power Control .............................................................................................................................. 75 7.1 Uplink Power Control .................................................................................................................................... 75 7.1.1 PUSCH.................................................................................................................................................. 75 7.1.2 PUCCH ................................................................................................................................................. 77 7.1.3 PRACH ................................................................................................................................................. 78 7.2 Downlink Power Control ............................................................................................................................... 80 7.2.1 PDSCH.................................................................................................................................................. 80 7.2.2 PDCCH ................................................................................................................................................. 86 7.2.3 PHICH .................................................................................................................................................. 87 7.2.4 PCFICH ................................................................................................................................................ 89 7.2.5 PBCH .................................................................................................................................................... 89 7.2.6 SCH....................................................................................................................................................... 90 7.2.7 PRS ....................................................................................................................................................... 91

A Acronyms and Abbreviations .................................................................................................. 93

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1

Uplink Resource Allocation

1.1 SRS Resource Allocation 1.1.1 SrsSubframeCfg (SRS subframe configuration) Description Meaning: This parameter indicates the index for initial cell-level SRS subframe configuration. Value type: enumeration Value range: SC0(0), SC1(1), SC2(2), SC3(3), SC4(4), SC5(5), SC6(6), SC7(7), SC8(8), SC9(9), SC10(10), SC11(11), SC12(12), SC13(13), SC14(14) Adjustment step: N/A Unit: none Default value: SC3(3) for FDD, SC0(0) for TDD Parameter relationship: none Impact scope: cell

Setting The protocol specifies that the number of subframe trees is configurable within a 10-ms measurement period. If the number of UEs is small, a small amount of cell-level SRS subframe resources is configured. This reduces the usage of PUSCH resources. If the cell load is light, a small and fixed amount of cell-level SRS resources can be configured. The current algorithm supports adaptive configuration of cell-level subframes. For example, the subframes can be configured every 2 or 5 milliseconds as required. This parameter affects the configuration of cell-level SRS subframes. If the number of configured cell-level subframes increases, the uplink cell throughput decreases.

Related Commands LST SRSCFG MOD SRSCFG: LocalCellId=x, SrsSubframeCfg=x;

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1.1.2 SrsSubframeRecfSwitch (SRS subframe tree reconfiguration switch) Description Meaning: This parameter indicates whether the function of reconfiguring cell-level subframe trees is enabled. If this parameter is set to ON, the number of cell-level SRS subframes adjusts adaptively based on the cell load. If this parameter is set to OFF, the cell-level SRS subframe configuration is fixed. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: on Parameter relationship: none Impact scope: cell

Setting This parameter is set to ON by default. If this parameter is set to OFF, cell-level SRS subframes cannot be reconfigured. As a result, SRS resources are unavailable to UEs that newly accessed the network.

Related Commands LST CELLALGOSWITCH MOD CELLALGOSWITCH: LocalCellId=x, SrsAlgoSwitch=SrsSubframeRecfSwitch-x;

1.1.3 AnSrsSimuTrans (SRS ACK/NACK simultaneous transmission) Description Meaning: This parameter indicates whether the SRS and ACK/NACK (AN) or scheduling request (SR) can be transmitted in the same transmission time interval (TTI). Value type: bool Value range: BOOLEAN_FALSE(False), BOOLEAN_TRUE(True) Adjustment step: N/A Unit: none Default value: BOOLEAN_TRUE(True) Parameter relationship: none Impact scope: cell

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Setting If this parameter is set to BOOLEAN_TRUE, the AN or SR is truncated, and the SRS and AN or SR can be transmitted in the same TTI. If this parameter is set to BOOLEAN_FALSE, the AN or SR is not truncated, and the SRS is discarded if the SRS and AN or SR are transmitted in the same TTI. This parameter is set to BOOLEAN_TRUE by default. This parameter can be set to BOOLEAN_FALSE to ensure AN or SR performance if the PUCCH demodulation performance cannot meet requirements. If this parameter is set to BOOLEAN_TRUE, the AN or SR demodulation performance may be affected. If this parameter is set to BOOLEAN_FALSE, timeout may occur.

Related Commands LST SRSCFG MOD SRSCFG: LocalCellId=x, AnSrsSimuTrans=x;

1.2 Uplink Scheduling 1.2.1 Scheduling in Each TTI 1.2.1.1 UlschStrategy (Uplink Scheduling Strategy) Description Meaning: This parameter indicates the uplink scheduling policy that determines the scheduling priority and the scheduling order in which UEs are arranged on the uplink. There are four uplink scheduling policies: MAX C/I, proportional fair (PF), round robin (RR), and enhanced proportional fair (EPF). Value type: enumeration Value range: ULSCH_STRATEGY_EPF(EPF), ULSCH_STRATEGY_MAX_CI(MAX_CI), ULSCH_STRATEGY_PF(PF), ULSCH_STRATEGY_RR(RR) Adjustment step: N/A Unit: none Default value: ULSCH_STRATEGY_EPF(EPF) Parameter relationship: none Impact scope: cell

Setting If the Max C/I scheduling policy is used, UEs for which channel quality is good are scheduled first. The spectral efficiency improves but the quality of service (QoS) and fairness cannot be ensured. The Max C/I scheduling policy can be used to verify the maximum system capacity. The RR scheduling policy ensures fairness but lowers the system capacity. This scheduling policy can be used to verify the upper threshold of system scheduling fairness. The PF

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scheduling policy balances between spectral efficiency and fairness. This scheduling policy can be used to verify the system capacity, coverage, and fairness. In the EPF scheduling policy, the QoS, system capacity, and frequency selection are balanced. The basic scheduling policies MAX C/I, PF, and RR are used in performance tests. The EPF scheduling policy is intended for commercial use. Impact of parameter setting on network performance: If this parameter is set to ULSCH_STRATEGY_EPF, the QoS is guaranteed, and the coverage, capacity, and fairness are balanced. If this parameter is set to ULSCH_STRATEGY_MAX_CI, the system capacity is maximized, but the coverage, fairness, and QoS are not ensured. If this parameter is set to ULSCH_STRATEGY_PF, a tradeoff among the coverage, capacity, and fairness is reached, but the QoS is not guaranteed. If this parameter is set to ULSCH_STRATEGY_RR, the eNodeB ensures that each UE has an equal opportunity to be scheduled on the uplink, but the capacity, coverage, and QoS are not ensured.

Related Commands LST CELLULSCHALGO MOD CELLULSCHALGO: LocalCellId=x, UlschStrategy=ULSCH_STRATEGY_x;

1.2.1.2 PreAllocationSwitch (Pre-Allocation Switch) Description Meaning: This parameter indicates whether the pre-allocation algorithm is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: on Parameter relationship: none Impact scope: cell

Setting The pre-allocation algorithm can reduce the end-to-end service latency when the uplink load is light. No resource is available for pre-allocation when the uplink load is heavy. Parameter adjustment scenario: 

This parameter can be set to ON to decrease the end-to-end service latency.



This parameter can be set to OFF to maintain the UE standby time during pre-allocation.



This parameter can be set to OFF to clear the interference caused by pre-allocation.

Impact of parameter setting on network performance: Setting this parameter to ON reduces the probability of UE entering the DRX state, shortens the UE standby time, and increases interference with neighboring cells.

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Related Commands LST CELLALGOSWITCH: MOD CELLALGOSWITCH: LocalCellId=x, UlSchSwitch=PreAllocationSwitch-x;

1.2.1.3 PreAllocationMinPeriod (minimal period of pre-allocation) Description Meaning: This parameter indicates the minimum interval between pre-allocations. The interval between pre-allocations of one UE must be longer than or equal to the value of this parameter. If this parameter is set to 1, a UE is pre-allocated in every TTI. Value type: integer Value range: 1 to 10 Adjustment step: 1 Unit: ms Default value: 5 Parameter relationship: This parameter is valid only when PreAllocationSwitch is set to ON. Impact scope: cell

Setting This parameter is used to control the impact of pre-allocation on UE standby time. Increasing the value of this parameter reduces the number of times UEs can be pre-allocated and increases the UE standby time. Decreasing the value of this parameter increases the number of times UEs can be pre-allocated and reduces the UE standby time. Parameter adjustment scenario: 

If a decrease in the pre-allocation interval is required, you are advised to decrease the value of this parameter.



If an increase in the UE standby time is required, you are advised to increase the value of this parameter.

Related Commands LST CELLULSCHALGO MOD CELLULSCHALGO: LocalCellId=x, PreAllocationMinPeriod =x;

1.2.1.4 PreAllocationSize (data size of pre-allocation) Description Meaning: This parameter indicates the data amount pre-allocated to each UE. Value type: integer Value range: 45 to 1500 Adjustment step: 1

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Unit: byte Default value: 80 Parameter relationship: This parameter is valid only when PreAllocationSwitch is set to ON. Impact scope: cell

Setting This parameter determines the amount of bandwidth resources pre-allocated to UEs based on an estimated amount of service data. If the data amount specified by this parameter matches the service type, there is a low probability that the data is fragmented at the Media Access Control (MAC) layer. As a result, the service latency is short. If the data amount specified by this parameter is less than the actual amount of data to be transmitted, there is a high probability that the data is fragmented at the MAC layer. As a result, the service latency is long. If the data amount specified by this parameter is greater than the actual amount of data to be transmitted, resources are wasted and interference increases. Parameter adjustment scenario: 

If the end-to-end latency is long, you are advised to increase the value of this parameter.



If the transmitted data is less than the pre-allocated data amount, you are advised to decrease the value of this parameter until the pre-allocated data amount is equal to the transmitted data amount.

Related Commands LST CELLULSCHALGO

1.2.2 Physical Layer Measurement Result Processing 1.2.2.1 SinrAdjustSwitch (SINR adjust switch) Description Meaning: This parameter indicates whether the eNodeB adjusts the SINR based on the ACK/NACK message received when HARQ is enabled on the uplink. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: none Impact scope: cell

Setting Due to inaccurate channel evaluation, inaccurate SINR measurement, or delays, the actual channel conditions may not be suitable for the UE MCS and the measured IBLER is higher

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than the target IBLER. The eNodeB uses the SINR adjustment algorithm to counteract the measurement error.

Related Commands LST CELLALGOSWITCH MOD CELLALGOSWITCH: LocalCellId=x, UlSchSwitch=SinrAdjustSwitch-x;

1.2.2.2 SinrAdjustTargetIbler (SINR target IBLER adjustment) Description Meaning: This parameter indicates the target IBLER for the SINR adjustment algorithm. Value type: double Value range: 1 to 99 Adjustment step: N/A Unit: % Default value: 10 Parameter relationship: none Impact scope: cell

Setting On the physical layer, the IBLER decides the SINR threshold for MCS switches, which is 10% by default. On the data link layer, the SINR adjustment increases with the IBLER. Due to the diversity combination gains, if the SINR adjustment step is large, a high-order MCS is used and system throughout increases. Parameter adjustment scenario: This parameter must set to maximize the system throughput when HARQ and uplink SINR adjustment are enabled. Impact of parameter setting on network performance: This parameter is set to achieve a balance between the initial MCS order and the number of retransmissions. The setting of this parameter affects cell throughput.

Related Commands LST CELLULSCHALGO MOD CELLULSCHALGO: LocalCellId=x, SinrAdjustTargetIbler=x;

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2

Downlink Resource Allocation

2.1 PUCCH Resource Allocation 2.1.1 DeltaShift (Delta Shift) Description Meaning: This parameter indicates the cyclic shift offset between two ACK or scheduling request indication (SRI) cord channels that use the same orthogonal cover (OC) code. Value type: enumeration Value range: DS1_DELTA_SHIFT(ds1), DS2_DELTA_SHIFT(ds2), DS3_DELTA_SHIFT(ds3) Unit: none Default value: none

Setting Recommended value: 

Set this parameter to DS2_DELTA_SHIFT(ds2) for a cell configured with the normal cyclic prefix (CP) when the LBBPc is used.



Set this parameter to DS3_DELTA_SHIFT(ds3) for a cell configured with the extended CP when the LBBPc is used.



Set this parameter to DS1_DELTA_SHIFT(ds1) for a cell configured with the normal CP when the LBBPd is used.



Set this parameter to DS3_DELTA_SHIFT(ds3) for a cell configured with the extended CP when the LBBPd is used.

Increasing the value of this parameter reduces the maximum number of ACK or SRI UEs that an RB supports for multiplexing and reduces the PUCCH capacity. If this parameter is set to a small value, the ACK or the SRI code channels may not be orthogonal.

Related Commands LST PUCCHCFG

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MOD PUCCHCFG: LocalCellId=x, DeltaShift=DSX_DELTA_SHIFT;

2.1.2 SriAdaptiveSwitch (SRI adaptive switch) Description Meaning: This parameter indicates whether SRI periodic adjustment is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: none Impact scope: eNodeB Recommended value: ON

Setting If this parameter is set to ON, the maximum number of SRI UEs supported in a cell increases without using more uplink control signaling resources or increasing the number of ACK or SRI cord channels. However, the average uplink scheduling delay increases when the PUCCH is heavily loaded. If this parameter is set to OFF and the number of ACK or SRI code channel remains unchanged, the maximum number of SRI UEs supported in a cell decreases. If SRI periodic adjustment is enabled and the PUCCH is heavily loaded, more UEs can be allocated SRI resources for network access.

Related Commands LST GLOBALPROCSWITCH; MOD GLOBALPROCSWITCH: SriAdaptiveSwitch=x;

2.1.3 FixedSriPeriod (SRI Period) Description Meaning: This parameter indicates the period of SRI. Value type: enumeration Value range: ms5, ms10, ms20, ms40 Adjustment step: N/A Unit: ms Default value: ms10 Parameter relationship: none

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Impact scope: eNodeB Recommended value: If UEs are on an ultra-high speed train, set this parameter to ms10. For other scenarios, set the parameter based on the QCI of services. If the configuration of TDD uplink and downlink subframe ratio is 0 or 1, set this parameter to ms5 for services with QCI3 or QCI5; ms10 for services with QCI1, QCI2 or QCI7; 20ms for services with QCI4, QCI6, QCI8, or QCI9.

Setting Increasing the value of this parameter increases the average SRI period for UEs and the maximum number of SRI UEs supported in a cell. However, the average uplink scheduling delay may increase. Decreasing the value of this parameter reduces the maximum number of SRI UEs supported in a cell.

Related Commands LST CELLSTANDARDQCI MOD CELLSTANDARDQCI: SriPeriod=x;

2.1.4 PucchSwitch (PUCCH algorithm switch) Description Meaning: This parameter indicates whether self-adaptive PUCCH resource adjustment is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: none Impact scope: cell Recommended value: You are advised to set this parameter to OFF for UEs on ultra-high speed trains. In other scenarios, set this parameter to ON.

Setting If this parameter is set to ON, PUCCH resource increases or decreases self-adaptively based on the load on the PUCCH, optimizing PUCCH resource utilization and reducing uplink control signaling overhead. However, when PUCCH resource decreases, the eNodeB may need to reallocate PUCCH resources to a few UEs, using more downlink resources. If this parameter is set to OFF, uplink control signaling overhead increases.

Related Commands LST CELLALGOSWITCH;

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MOD CELLALGOSWITCH: PucchAlgoSwitch=PucchSwitch-x;

2.1.5 SriLowLoadThd (SRI Low Load Threshold) Description Meaning: This parameter indicates the threshold for entering the low load state of SRI resources. Value type: integer Value range: 0 to 50 Adjustment step: 1 Unit: none Default value: 10 Parameter relationship: none Impact scope: cell Recommended value: 

In FDD mode with the bandwidth of 1.4 MHz or 3 MHz, set this parameter to 0.



In FDD mode with the bandwidth of 5 MHz or 10 MHz, set this parameter to 10.

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In FDD mode with the bandwidth of 15 MHz or 20 MHz, set this parameter to 20.

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In TDD mode with the bandwidth of 1.4 MHz or 3 MHz, set this parameter to 0.



In TDD mode with the bandwidth of 5 MHz or 10 MHz, set this parameter to 10.



In TDD mode with the bandwidth of 15 MHz or 20 MHz, set this parameter to 20.

Setting You are advised to retain the default value of the parameter. If adjustments are inevitable, do not set this parameter to a value much greater than the default value, because this may lead to incorrect decisions on the load status of SRI resources. The recommended maximum value of this parameter is 20 if the downlink bandwidth is less than 10 MHz and 40 for other bandwidths. Increasing the value of this parameter reduces the SRI resources in a cell. Decreasing the value of this parameter increases the SRI resources of a cell.

Related Commands LST CELLPUCCHALGO; MOD CELLPUCCHALGO: LocalCellId=x, SriLowLoadThd=x;

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2.2 Downlink CQI Adjustment 2.2.1 CqiAdjAlgoSwitch (CQI adjust algorithm switch) Description Meaning: This parameter indicates whether the eNodeB is allowed to adjust the UE-reported CQIs based on the IBLER. Value type: enumeration Value range: ON, OFF Unit: none Default value: ON Parameter relationship: none Impact scope: cell

Setting If this parameter is set to ON, the IBLER of a UE is maintained around the target value and the system throughout is optimized. If this parameter is set to OFF, the IBLER of a UE may be much higher than the target value and the system throughout cannot be optimized.

Related Commands LST CELLALGOSWITCH MOD CELLALGOSWITCH: LocalCellId=x, CqiAdjAlgoSwitch=CqiAdjAlgoSwitch-x&StepVarySwitch-0;

2.3 Downlink Scheduling 2.3.1 DlschPriorityFactor (Downlink scheduling priority factor) Description Meaning: This parameter indicates the weight factor used in the calculation of connection priorities during downlink scheduling. Value type: interval Value range: 0 to 1000 Unit: 0.001 Default value: none Parameter relationship: This parameter must be set to a value that ensures the following







QCI 7 QCI 8 condition is met: QCI 6 QCI6, QCI7, QCI8, and QCI9 services.

  QCI 9

. In addition, this parameter is valid for

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Impact scope: eNodeB

Setting Recommended value: 1000 for QCI6; 900 for QCI7; 800 for QCI8; 700 for QCI9 The value of this parameter is an important factor in determining the scheduling priority of a UE and the amount of physical resources that the eNodeB allocates to a UE in a period of time. Increasing the value of this parameter enhances the scheduling priority of and increases the amount of RB resources allocated for QCIx services. Decreasing the value of this parameter lowers the scheduling priority of and reduces the amount of RB resources allocated for QCIx services.

Related Commands LST STANDARDQCI MOD STANDARDQCI: Qci=QCIx, DlschPriorityFactor=x;

2.3.2 DlMinGbr (Downlink MinGBR) Description Meaning: This parameter indicates the minimum data rate for QCIx non-GBR services. This parameter is used to guarantee that non-GBR services can be scheduled even in network congestion. Value type: enumeration Value range: MinGbrRate_0_KB, MinGbrRate_1_KB, MinGbrRate_2_KB, MinGbrRate_4_KB, MinGbrRate_8_KB, MinGbrRate_16_KB, MinGbrRate_32_KB, MinGbrRate_64_KB, MinGbrRate_128_KB, MinGbrRate_256_KB, MinGbrRate_512_KB Unit: kbyte/s Default value: MinGbrRate_1_KB Parameter relationship: The minimum data rate guaranteed for non-GBR services equals to that for GBR services. The scheduling of both non-GBR services and GBR services must be guaranteed. Therefore, this parameter must not be set too large. In addition, this parameter is valid for QCI6, QCI7, QCI8, and QCI9 services. Impact scope: eNodeB

Setting Increasing the value of this parameter increases the minimum data rate of QCIx services. Decreasing the value of this parameter reduces the minimum data rate of QCIx services.

Related Commands LST STANDARDQCI MOD STANDARDQCI: Qci=QCIx, DlMinGbr=x;

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2.3.3 DlschStrategy (Downlink scheduling Strategy) Description Meaning: This parameter indicates the downlink scheduling type. Value type: enumeration Value range: DLSCH_PRI_TYPE_EPF, DLSCH_PRI_TYPE_PF, DLSCH_PRI_TYPE_MAX_CI, DLSCH_PRI_TYPE_RR Unit: none Default value: DLSCH_PRI_TYPE_EPF Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set to DLSCH_PRI_TYPE_PF, the proportional fair algorithm is implemented and the channel quality and fairness are balanced in scheduling. If this parameter is set to DLSCH_PRI_TYPE_MAX_CI, the Max C/I algorithm is implemented and UEs with optimal channel quality are preferentially scheduled. If this parameter is set to DLSCH_PRI_TYPE_RR, the round robin algorithm is implemented and UEs in a cell are scheduled in turns. The preceding scheduling policies are implemented regardless of UE QoS configuration. If this parameter is set to DLSCH_PRI_TYPE_EPF, the proportional fair algorithm is implemented with the QoS of services taken into consideration.

Related Commands LST CELLDLSCHALGO; MOD CELLDLSCHALGO: LocalCellId=x, DlschStrategy=x;

2.3.4 BtServiceWeight (Bt Service Weight) Description Meaning: This parameter indicates the weighting factor for BT services when DlschStrategy is set to DLSCH_PRI_TYPE_EPF. Value type: interval Value range: 0 to 100 Unit: 0.01 Default value: 1

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Parameter relationship: The value of this parameter must not be greater than the value of OtherServiceWeight. Impact scope: cell

Setting The value of this parameter is an important factor in determining the scheduling priority of a UE and the amount of physical resources that the eNodeB allocates to a UE. Increasing the value of this parameter enhances the scheduling priority of and increases the amount of RB resources allocated to BT services. Decreasing the value of this parameter lowers the scheduling priority of and reduces the amount of RB resources allocated for BT services.

Related Commands LST CELLDLSCHALGO; MOD CELLDLSCHALGO: LocalCellId=x, BtServiceWeight=x;

2.3.5 OtherServiceWeight (Other Service Weight) Description Meaning: This parameter indicates the weighting factor for non-BT services when DlschStrategy is set to DLSCH_PRI_TYPE_EPF. Value type: interval Value range: 0 to 100 Unit: 0.01 Default value: 10 Parameter relationship: The value of this parameter must not be smaller than the value of BtServiceWeight. Impact scope: cell

Setting The value of this parameter is an important factor in determining the scheduling priority of a UE and the amount of physical resources that the eNodeB allocates to a UE. Increasing the value of this parameter enhances the scheduling priority of and increases the amount of RB resources allocated to non-BT services. Decreasing the value of this parameter lowers the scheduling priority of and reduces the amount of RB resources allocated for non-BT services. This parameter is valid only when ServiceDiffSwitch is set to ON.

Related Commands LST CELLDLSCHALGO; MOD CELLDLSCHALGO: LocalCellId=x, OtherServiceWeight=x;

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2.4 PDCCH Resource Allocation 2.4.1 CCEUseRatio (CCE use ratio) Description Meaning: This parameter indicates the upper threshold for the CCE utilization rate at each TTI. Value type: integer Value range: 0 to 100 Adjustment step: 1 Unit: none Default value: 100 Parameter relationship: none Impact scope: eNodeB

Setting This parameter is used to control the CCE utilization rate at each TTI. This parameter is invalid when PDCCHSymbolNumberSwitch is set to ON. If the parameter is set too small, the number of available CCE is small. In this case, success rates of network access and CCE allocation decrease, especially for uplink scheduling. You are advised to set this parameter to a value greater than 23. The following table lists the minimum values recommended for various bandwidths. Minimum CCE Usage Ratio

10 MHz

15 MHz

20 MHz

CFI=1, Port4

100

100

100

CFI=2, Port4

100

80

60

CFI=3, Port4

65

44

32

CFI=1, Port2

100

100

100

CFI=2, Port2

100

63

50

CFI=3, Port4

58

38

28

If V MIMO and MU BF are enabled, you are advised to set this parameter to 100. Otherwise, CCE allocation for paring UEs may fail and the performance of Virtual MIMO and MU BF may be compromised. Impact of parameter setting on network performance: Decreasing the value of this parameter may reduce the number of UEs scheduled in a TTI, reduce the uplink and downlink throughout, and negatively affect the QoS of a service and cell capacity.

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Related Commands LST CELLPDCCHALGO; MOD CELLPDCCHALGO: LocalCellId=x, CceUseRatio=x;

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3

Downlink ICIC

3.1 DlIcicSwitch (DlIcic algorithm switch) Description Meaning: This parameter indicates whether downlink ICIC is enabled or which type of downlink ICIC algorithm is used. Value type: enumeration Value range: DlIcicSwitch_OFF_ENUM, DlIcicDynamicSwitch_ON_ENUM, DlIcicStaticSwitch_ON_ENUM, DlIcicReuse3Switch_ON_ENUM Unit: none Default value: DlIcicSwitch_OFF_ENUM Parameter relationship: Cells configured with punctured RBs and non-standard bandwidths support only static ICIC. If adaptive DL ICIC is enabled, static and dynamic DL ICIC do not take effect. Impact scope: eNodeB

Setting If this parameter is set to a value other than DlIcicSwitch_OFF_ENUM, the system capacity decreases, but eNodeB coverage improves.

Related Commands LST ENODEBALGOSWITCH:; MOD ENODEBALGOSWITCH: DlIcicSwitch=DlIcicSwitch_OFF_ENUM;

3.2 BandMode (Downlink band division scheme) Description Meaning: This parameter indicates the range of the edge band in a cell.

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Value type: enumeration Value range: Mode1, Mode2, Mode3, Invalid Unit: none Default value: Invalid Parameter relationship: none Impact scope: cell

Setting This parameter is valid only when downlink ICIC is enabled.

Related Commands LST CELLDLICIC: LocalCellId=0; MOD CELLDLICIC: LocalCellId=0, BandMode=MODE1;

3.3 A3Offset (Downlink ICIC A3 offset) Description Meaning: This parameter indicates the offset for the event A3 trigger condition when downlink ICIC is enabled. If the RSRP difference between a neighboring cell and the serving cell is greater than the value of this parameter, the UE is recognized as a CEU in the serving cell. Value type: integer Value range: -30 to 30 Unit: 0.5 dB Default value: -10 Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set too large, the event A3 trigger condition is hard to be met and fewer UEs report event A3 to the eNodeB. In this case, CEU performance is not guaranteed and cell capacities decrease. If this parameter is set too small, the event A3 trigger condition is easy to be met and more UEs report event A3 to the eNodeB. As a result, a CEU cannot be located accurately based on event A3 measurement reports. In addition, more UEs are scheduled in edge bands and the average throughput of edge UEs decrease.

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Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: A3Offset=-10;

3.4 Hysteresis (DownLink ICIC measurement hysteresis) Description Meaning: This parameter indicates the hysteresis for event A3 when downlink ICIC is enabled. Value type: integer Value range: 0 to 30 Unit: 0.5 dB Default value: 4 Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set too large, the event A3 trigger condition is hard to be met. If this parameter is set too small, the event A3 trigger condition is easy to be met and more UEs may report event A3 to the eNodeB, reducing the throughput of CEUs and the cell.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: LocalCellId=0, Hysteresis=4;

3.5 TimeToTrigger (DownLink ICIC measurement time to trigger) Description Meaning: This parameter indicates the length of time that a UE waits to report event A3 to the eNodeB after detecting event A3 and, during the period, the formula of event A3 stays true. A UE detects event A3 when the measurement result indicates that the entering condition or leaving condition for event A3 is met. Value type: enumeration Value range: 0, 40, 64, 80, 100, 128, 160, 256, 320, 480, 512, 640, 1024, 1280, 2560, 5120 Unit: ms

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Default value: 640 Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set too large, the UE must wait a long period of time to report event A3 to the eNodeB after detecting event A3. If this parameter is set too small, the UE may report event A3 immediately after detecting event A3. In this case, the UE location in a cell cannot be updated in a timely manner, the ICIC effect is compromised, and the cell capacity and CEU throughout decrease.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: TimeToTrigger=640ms;

3.6 MaxReportCellNum (Downlink ICIC measurement max report cell number) Description Meaning: This parameter indicates the maximum number of neighboring cells to be included in event A3 measurement report. Value type: integer Value range: 1 to 8 Unit: none Default value: 8 Parameter relationship: none Impact scope: cell

Setting Increasing the value of this parameter enhances the evaluation accuracy of interference on neighboring cells, improves CEU performance, and increases the average CEU throughput.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: MaxReportCellNum=8;

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3.7 ReportInterval (Downlink ICIC measurement report interval) Description Meaning: This parameter indicates the interval between event A3 measurement reports that a UE sends to the eNodeB after event A3 is detected. For details, see 3GPP TS 36.331. Value type: enumeration Value range: 120ms, 240ms, 480ms, 640ms, 1024ms, 2048ms, 5120ms, 10240ms, 1min, 6min, 12min, 30min, 60min Unit: ms Default value: 5120 Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set to a large value, the CEU reports event A3 to the eNodeB in a less frequent manner and the UE location is not updated efficiently. As a result, the average CEU throughput decreases. If this parameter is set to a small value, the CEU may frequently report event A3 to the eNodeB, using more band resources.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: ReportInterval=5120ms;

3.8 ReportAmount (Downlink ICIC measurement report amount) Description Meaning: This parameter indicates the number of times a CEU reports event A3 to the eNodeB. A CEU stops reporting event A3 when the number of times it has reported event A3 reaches the value of this parameter. Value type: enumeration Value range: 1, 2, 4, 8, 16, 32, 64, infinity Unit: none Default value: infinity Parameter relationship: none Impact scope: eNodeB

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Setting If this parameter is not set to infinity, a CEU may be recognized as a CCU.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: ReportAmount=Infinity;

3.9 TriggerQuantity (DownLink ICIC measurement trigger quantity) Description Meaning: This parameter indicates the source from which the UE obtains the signal received power of a neighboring cell and the serving cell. Then, the UE applies these two values in the event A3 formula to determine whether the event A3 trigger condition is met. Value type: enumeration Value range: RSRP, RSRQ Unit: none Default value: RSRP Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set to RSRP, the obtained signal received power does not dramatically fluctuate with the cell load. If this parameter is set to RSRQ, the obtained signal received power dramatically fluctuates with the cell load but the signal quality can be reflected in real time. Changing the value of this parameter changes the event A3 trigger condition.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: LocalCellId=0, TriggerQuantity=RSRP;

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3.10 ReportQuantity (DownLink ICIC measurement report quantity) Description Meaning: This parameter indicates the quantity to be included in the event A3 measurement report when downlink ICIC is enabled. The quantity can be RSRP, RSRQ, or both. Value type: enumeration Value range: SAME_AS_TRIG_QUAN(The same as TriggerQuantity), BOTH(Both) Unit: none Default value: SAME_AS_TRIG_QUAN Parameter relationship: none Impact scope: eNodeB

Setting If this parameter is set to SAME_AS_TRIG_QUAN, the report quantity included in the event A3 measurement report is the same as that specified by TriggerQuantity. If this parameter is set to BOTH, both the RSRP and RSRQ are included in the event A3 measurement report and TriggerQuantity is invalid. For details, see 3GPP TS 36.331.

Related Commands LST CELLDLICICMCPARA: LocalCellId=0; MOD CELLDLICICMCPARA: LocalCellId=0, ReportQuantity=SAME_AS_TRIG_QUAN;

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4

Downlink MIMO

4.1 MIMOADAPTIVESWITCH (MIMO adaptive switch) Description Meaning: This parameter indicates the type of adaptive MIMO for a multi-antenna eNodeB. Value type: enumeration Value range: NO_ADAPTIVE(NO_ADAPTIVE), OL_ADAPTIVE(OL_ADAPTIVE), CL_ADAPTIVE(CL_ADAPTIVE), OC_ADAPTIVE(OC_ADAPTIVE) Unit: none Default value: OL_ADAPTIVE(OL_ADAPTIVE) Parameter relationship: This parameter is valid only when BFALGOSWITCH is set to OFF. Impact scope: cell

Setting This parameter specifies the transmission modes applicable to UEs served by a multi-antenna eNodeB in TDD mode. This parameter has an impact on cell throughput and coverage.

Related Commands LST MIMOADAPTIVEPARACFG:; MOD MIMOADAPTIVEPARACFG:MIMOADAPTIVESWITCH=x;

4.2 FIXEDMIMOMODE (Fixed MIMO mode) Description Meaning: This parameter indicates the fixed MIMO mode of a multi-antenna eNodeB in TDD mode. Value type: enumeration

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Value range: TM2(TM2), TM3(TM3), TM4(TM4), TM6(TM6) Unit: none Default value: TM3 Parameter relationship: This parameter is valid only when BFALGOSWITCH is set to OFF and MIMOADAPTIVESWITCH is set to NO_ADAPTIVE. Impact scope: cell

Setting This parameter specifies the transmission modes applicable to UEs served by a multi-antenna eNodeB in TDD mode. This parameter has an impact on cell throughput and coverage.

Related Commands LST MIMOADAPTIVEPARACFG:; MOD MIMOADAPTIVEPARACFG:FIXEDMIMOMODE=x;

4.3 MAXMIMORANKPARA (maximum number of MIMO layers) Description Meaning: This parameter indicates the maximum number of layers (Rank) in MIMO implementation during downlink scheduling. Value type: enumeration Value range: SW_MAX_SM_RANK_1, SW_MAX_SM_RANK_2, SW_MAX_SM_RANK_4 Unit: none Default value: SW_MAX_SM_RANK_1 (A license for 2 x 2 MIMO is not provided by default.) Parameter relationship: Setting this parameter to SW_MAX_SM_RANK_4 requires that the eNodeB be configured with a minimum of four transmit antennas. Impact scope: cell

Setting This parameter has a great impact on the throughput performance of MIMO technology.

Related Commands LST CELLDLSCHALGO:; MOD CELLDLSCHALGO:LOCALCELLID=x,MAXMIMORANKPARA=x;

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5

Mobility Control

5.1 Intra-RAT Handover 5.1.1 Handover Algorithm Switch 5.1.1.1 IntraFreqCoverHoSwitch (Coverage-Based Intra-Freq HO Algo Switch) Description Meaning: This parameter indicates whether the coverage-based intra-frequency handover algorithm is enabled. This parameter is used to control seamless coverage between intra-frequency cells. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: ON If this parameter is set to ON, UEs can be handed over to an intra-frequency neighboring cell. If this parameter is set to OFF, UEs cannot be handed over to an intra-frequency neighboring cell. Impact of parameter setting on network performance: If this parameter is set to ON, seamless coverage between intra-frequency cells is guaranteed and user experience improves. If this parameter is set to OFF, seamless coverage between intra-frequency cells cannot be guaranteed.

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Related Commands LST ENODEBALGOSWITCH MOD ENODEBALGOSWITCH: HoAlgoSwich=IntraFreqCoverHoSwitch-1;

5.1.1.2 InterFreqCoverHoSwitch (Coverage-Based Inter-Freq HO Algo Switch) Description Meaning: This parameter indicates whether the coverage-based inter-frequency handover algorithm is enabled. This parameter is used to control seamless coverage between inter-frequency cells. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: none Impact scope: eNodeB

Setting Recommended value: ON If this parameter is set to ON, UEs can be handed over to an inter-frequency neighboring cell. If this parameter is set to OFF, UEs cannot be handed over to an inter-frequency neighboring cell. Impact of parameter setting on network performance: If this parameter is set to ON, seamless coverage between inter-frequency cells is guaranteed and user experience improves. If this parameter is set to OFF, seamless coverage between inter-frequency cells cannot be guaranteed.

Related Commands LST ENODEBALGOSWITCH MOD ENODEBALGOSWITCH: HoAlgoSwich=InterFreqCoverHoSwitch-1;

5.1.1.3 BlindHoSwitch (Blind HO Switch) Description Meaning: This parameter indicates whether the blind handover algorithm is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A

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Unit: none Default value: OFF Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: OFF A blind handover is triggered when there is not enough time for GAP measurement. If this parameter is set to ON, a UE skips GAP measurement and selects the cell with the highest priority from the neighboring cell list. However, the handover success rate cannot be guaranteed. If this parameter is set to OFF, a UE can be handed over only after the eNodeB receives the measurement report from the UE and determines that the condition for a handover is met. Parameter adjustment scenario: Set this parameter to ON when there is not enough time for GAP measurement and no requirement for the handover success rate. Impact of parameter setting on network performance: If this parameter is set to ON, handovers are performed in a timely manner, but the handover success rate may be compromised.

Related Commands LST ENODEBALGOSWITCH:; MOD ENODEBALGOSWITCH: HoModeSwitch=BlindHoSwitch-1;

5.1.1.4 FreqPriorIFHOSwitch (Based on Frequency Priority HO Switch) Description Meaning: This parameter indicates the frequency-priority-based inter-frequency handover switch. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: OFF Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: OFF

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This parameter applies only to handovers between inter-frequency co-coverage cells when one frequency is preferred for carrying services of UEs handed over from low-priority frequencies. If this parameter is set to ON, an inter-frequency handover based on frequency priorities will be triggered even when the signal quality of the serving cell is good. If this parameter is set to OFF, inter-frequency handovers based on frequency priorities are disabled. Impact of parameter setting on network performance: If this parameter is set to ON, a UE is handed over to another frequency based on frequency priorities. In this case, the number of handovers increases, but the UE data rate also increases.

Related Commands LST CELLALGOSWITCH:; MOD CELLALGOSWITCH: FreqPriorityHoSwitch=FreqPriorIFHOSwitch-1

5.1.1.5 FreqPriorityIFBlindHoSwitch (Frequency Priority-Based Blind HO Switch) Description Meaning: This parameter indicates whether the handover based on the frequency priority is blind. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Parameter relationship: This parameter is valid only when FreqPriorIFHOSwitch is set to ON. Impact scope: cell Scenario-based parameter: no

Setting Recommended value: ON If this parameter is set to ON, the handover based on the frequency priority is blind. If this parameter is set to OFF, the handover based on the frequency priority requires GAP measurement. A blind handover is triggered when there is not enough time for GAP measurement. If this parameter is set to ON, a UE skips GAP measurement and selects the cell with the highest priority from the neighboring cell list. However, the handover success rate cannot be guaranteed. If this parameter is set to OFF, a UE can be handed over only after the eNodeB receives the measurement report from the UE and determines that the condition for a handover is met.

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Set this parameter to ON if fast handover is required. In addition, set a high threshold for event A1 to guarantee the handover success rate. This reduces the number of UEs to be handed over to high priority cells and increases the probability for low priority cells to be heavily loaded.

Related Commands LST CELLALGOSWITCH:; MOD CELLALGOSWITCH: FreqPriorityHoSwitch=FreqPriorIFBlindHOSwitch-1;

5.1.2 Intra-RAT Handover Common Parameter 5.1.2.1 IntraRATHoMaxRprtCell (Max report cell number) Description Meaning: This parameter indicates the maximum number of cells to be included in a handover measurement report. For details, see 3GPP TS 36.331. Value type: integer Value range: 1 to 8 Adjustment step: 1 Unit: none Default value: 4 Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: 4 This parameter is used to limit the number of cells included in a handover measurement report to reduce air interface overhead. Handovers can be triggered by event A1, A2, A3, and A4. Parameter adjustment scenario: Decrease the value of this parameter if band resources are limited and the cell is heavily loaded. Impact of parameter setting on network performance: Decreasing the value of this parameter reduces the number of candidate target cells, the probability of triggering handovers, and air interface overhead. Increasing the value of this parameter increases the number of candidate target cells and the probability of triggering handovers.

Related Commands LST INTRARATHOCOMM:; MOD INTRARATHOCOMM: IntraRatHoMaxRprtCell=4;

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5.1.2.2 IntraRATHoRprtAmount (Measurement report amount) Description Meaning: This parameter indicates the number of times that the UE sends the periodic measurement report to the eNodeB after an intra-frequency or inter-frequency handover is triggered. It is used to ensure that the eNodeB receives the measurement report and handovers are not affected by internal processing failures. For details, see 3GPP TS 36.331. Value type: enumeration Value range: r1(1), r2(2), r4(4), r8(8), r16(16), r32(32), r64(64), Adjustment step: N/A Unit: none Default value: infinity(infinity) Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: infinity(infinity) According to the handover algorithm, if a handover is triggered by event A3 or event A4, the eNodeB sends a handover request to the target cell to apply for resources. If the handover fails, the UE sends another handover request to the eNodeB after the report interval of the related event. If periodic event reporting is enabled, a UE sends another handover request after being denied due to full load on the target cell. Increasing the value of this parameter increases the number of times that a UE can initiate a handover and increases the probability for the UE to be handed over to another cell. If this parameter is set to infinity, the number of times that a UE sends the periodic measurement report to the eNodeB is unlimited. Parameter adjustment scenario: If the quality of air interfaces is good enough, or if the UE does not need to perform handover retries, decrease the value of this parameter. Impact of parameter setting on network performance: Increasing the value of this parameter increases the handover success rate. However, if this parameter is set too large, a lot of signaling messages are generated, wasting air interface resources. Decreasing the value of this parameter reduces the times that a UE initiates handovers. In this case, a UE may stay at the cell edge all the time and the QoS cannot be satisfied.

Related Commands LST INTRARATHOCOMM:; MOD INTRARATHOCOMM: IntraRatHoRprtAmount=Infinity;

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5.1.3 Intra-Frequency Handover 5.1.3.1 Intra-Frequency Handover Common Parameter 5.1.3.1.1 IntraFreqHoRprtInterval (A3 measurement report interval)

Description Meaning: This parameter indicates the interval at which periodic measurement reports are sent after an intra-frequency handover event is triggered. For details, see 3GPP TS 36.331. Value type: enumeration Value range: 120ms(120 ms), 240ms(240 ms), 480ms(480 ms), 640ms(640 ms), 1024ms(1024 ms), 2048ms(2048 ms), 5120ms(5120 ms), 10240ms(10240 ms), 1min(1 minute), 6min(6 minutes), 12min(12 minutes), 30min(30 minutes), 60min(60 minutes) Adjustment step: N/A Unit: ms/min Default value: 240ms(240 ms) Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: 240ms(240 ms) Delay for signaling message transmission and processing exists. Therefore, if this parameter is set too small, the UE may not obtain the handover result before sending another periodic measurement report and air interface overhead increases; if this parameter is set too large, the delay for handover retry is long and the handover success rate may be compromised. Parameter adjustment scenario: Increase the value of this parameter if a longer interval for sending periodic measurement reports is required. Decrease the value of this parameter if a shorter interval for sending periodic measurement reports is required.

Related Commands LST INTRARATHOCOMM:; MOD INTRARATHOCOMM: IntraFreqHoRprtInterval=240ms;

5.1.3.1.2 IntraFreqHoA3RprtQuan (A3 measurement report quantity)

Description Meaning: This parameter indicates the quantity to be included in the measurement report for an intra-frequency handover. The quantity can be RSRP, RSRQ, or both. For details, see 3GPP TS 36.331. For details, see 3GPP TS 36.331.

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Value type: enumeration Value range: SAME_AS_TRIG_QUAN(The same as TriggerQuantity), BOTH(Both) Adjustment step: N/A Unit: none Default value: SAME_AS_TRIG_QUAN(The same as TriggerQuantity) Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

Setting Recommended value: SAME_AS_TRIG_QUAN(The same as TriggerQuantity) Parameter adjustment scenario: When event A3 is triggered, the default quantity included in the measurement report is the same as that specified by IntraFreqHoA3TrigQuan of which the default value is RSRP. The eNodeB generates a list of target cells based on the reported quantity. Set this parameter to BOTH if the eNodeB must make a handover decision based on both RSRP and RSRQ. Impact of parameter setting on network performance: The measurement result based on the RSRP does not dramatically fluctuate with the cell load. The measurement result based on the RSRQ dramatically fluctuates with the cell load, but reflects the real-time signal quality of the serving cell.

Related Commands LST INTRARATHOCOMM MOD INTRARATHOCOMM: IntraFreqHoA3RprtQuan=SAME_AS_TRIG_QUAN;

5.1.3.1.3 IntraFreqHoA3TrigQuan (A3 measurement trigger quantity)

Description Meaning: This parameter indicates the quantity used to evaluate the triggering condition for an intra-frequency handover. The quantity can be RSRP or RSRQ. For details, see 3GPP TS 36.331. Value type: enumeration Value range: RSRP(for EUTRAN only), RSRQ(for EUTRAN only) Adjustment step: N/A Unit: none Default value: RSRP(for EUTRAN only) Parameter relationship: none Impact scope: eNodeB Scenario-based parameter: no

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Setting Recommended value: RSRP(for EUTRAN only) The measurement result based on the RSRP does not dramatically fluctuate with the cell load. The measurement result based on the RSRQ dramatically fluctuates with the cell load, but reflects the real-time signal quality of the serving cell. If this parameter is set to RSRP, the number of unnecessary handovers triggered due to unstable measurement results reduces.

Related Commands LST INTRARATHOCOMM:; MOD INTRARATHOCOMM: IntraFreqHoA3TrigQuan=RSRP;

5.1.3.1.4 QoffsetFreq (Intra frequency offset)

Description Meaning: This parameter indicates the frequency offset of an intra-frequency neighboring cell. Value type: enumeration Value range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Adjustment step: N/A Unit: dB Default value: dB0(0dB) Parameter relationship: none Impact scope: cell

Setting Recommended value: dB0(0dB) This parameter is provided in 3GPP TS 36.331. Event A3 trigger condition: Mn + Ofn + Ocn – Hys > Ms + Ofs + Ocs + Off Ofs and Ofn are the offsets of serving cell and the neighboring cell, respectively. They are set to determine the frequency to which a UE is preferentially handed over, and they are used to evaluate the entering condition and the leaving condition of event A3. Increasing the value of this parameter enhances the frequency priority. In an intra-frequency handover, Ofs equals to Ofn.

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The eNodeB does not send measurement control information to a UE if the measurement offset of an intra-frequency cell that served by another eNodeB is 0. However, the neighboring relationship remains unchanged. Impact of parameter setting on network performance: Increasing the value of this parameter enhances the frequency priority. If Ofs is large, the serving cell priority is high, and the event A3 trigger condition is hard to be met. Therefore, handovers are delayed. If Ofn is large, the event A3 trigger condition is easy to be met. Therefore, unnecessary handovers may be performed.

Related Commands LST EUTRANINTERNFREQ:; MOD EUTRANINTERNFREQ: QoffsetFreq=dB0;

5.1.3.2 IntraFreqHO Qci 5.1.3.2.1 IntraFreqHoA3Hyst (Intrafreq handover hysteresis)

Description Meaning: This parameter indicates the hysteresis for an intra-frequency handover. This parameter is used to reduce ping-pong handovers caused by RSRP fluctuation. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 30 Adjustment step: 1 Unit: 0.5 dB Default value: 2 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 2 Event A3 trigger condition: Mn + Ofn + Ocn – Hys > Ms + Ofs + Ocs + Off Mn is the measurement result of the neighboring cell. Ofn is the frequency-specific offset of the neighboring cell frequency. Ocn is the cell-specific offset of the neighboring cell. Ofs is the frequency-specific offset of the serving cell frequency. Ocs is the cell-specific offset of the serving cell. Off is the offset for this event. Hys is the hysteresis for this event. Increasing the value of this parameter for a cell with a large fading variance reduces the number of unnecessary handovers. Decreasing the value of this parameter ensures that handovers are performed in a timely manner.

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Impact of parameter setting on network performance: Increasing Hys reduces the number of times that event A3 is triggered and delays handovers. Therefore, user experience is affected. However, reducing Hys increases the number of times that event A3 is triggered, which may lead to unnecessary handovers and ping-pong handovers.

Related Commands LST INTRAFREQHOGROUP:; MOD INTRAFREQHOGROUP: LocalCellId=x, IntraFreqHoGroupId=x, IntraFreqHoA3Hyst=2;

5.1.3.2.2 IntraFreqHoA3Offset (Intrafreq handover offset)

Description Meaning: This parameter indicates the offset between the serving cell and the neighboring cell in an intra-frequency handover. This parameter is used to define the event A3 trigger condition. For details, see 3GPP TS 36.331. Value range: -30 to 30 Adjustment step: 1 Unit: 0.5 dB Default value: 2 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 2 Event A3 trigger condition: Mn + Ofn + Ocn – Hys > Ms + Ofs + Ocs + Off Off equals to the value of this parameter and is used to define the event A3 trigger condition. Impact of parameter setting on network performance: If this parameter is set to a large value, the event A3 trigger condition is hard to be met. Therefore, handovers are delayed. If this parameter is set to a small value, the event A3 trigger condition is easy to be met. Therefore, unnecessary handovers may be performed.

Related Commands LST INTRAFREQHOGROUP:; MOD INTRAFREQHOGROUP: LocalCellId=x, QCI=x, IntraFreqHoA3Offset=2;

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5.1.3.2.3 IntraFreqHoA3TimeToTrig (Intrafreq handover time to trigger)

Description Meaning: This parameter indicates the delay for intra-frequency handovers. When the event A3 trigger condition is met, the UE waits a period of time before reporting event A3 to the eNodeB and, during this period, the formula of event A3 stays true. In this case, both the number of unnecessary handovers and the number of average handovers decreases. Value type: enumeration Value range: 0ms(0 ms), 40ms(40 ms), 64ms(64 ms), 80ms(80 ms), 100ms(100 ms), 128ms(128 ms), 160ms(160 ms), 256ms(256 ms), 320ms(320 ms), 480ms(480 ms), 512ms(512 ms), 640ms(640 ms), 1024ms(1024 ms), 1280ms(1280 ms), 2560ms(2560 ms), 5120ms(5120 ms) Adjustment step: N/A Unit: ms Default value: 320ms(320 ms) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 320ms(320 ms) This parameter is provided in 3GPP TS 36.331. Parameter adjustment scenario: If UEs in a cell move at a high speed, you are advised to set this parameter to a small value, because handover delay may increase the call drop rate. If UEs in a cell move at a low speed, you can increase the value of this parameter to prevent ping-pong handovers and unnecessary handovers. Impact of parameter setting on network performance: Increasing the value of this parameter reduces the number of handovers, but may increase the call drop rate. This parameter has an impact on the network only when its value is equal to or greater than 200 ms, because 3GPP protocols specify that the measurement result on the physical layer is updated every 200 ms.

Related Commands LST INTRAFREQHOGROUP:; MOD INTRAFREQHOGROUP: IntraFreqHoA3TimeToTrig=320ms;

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5.1.3.3 Intra-freq HO Cell 5.1.3.3.1 CellSpecificOffset (Cell specific offset)

Description Meaning: This parameter indicates the cell-specific offset of the serving cell. It is used to determine the border between a neighboring cell and the serving cell. Value type: enumeration Value range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Adjustment step: N/A Unit: dB Default value: dB0(0dB) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: dB0(0dB) This parameter is provided in 3GPP TS 36.331. Event A3 trigger condition: Mn + Ofn + Ocn – Hys > Ms + Ofs + Ocs + Off Ocs equals to the value of this parameter and is used to define the trigger condition of event A3. Impact of parameter setting on network performance: If this parameter is set to a large value, the event A3 trigger condition is hard to be met. Therefore, handovers are delayed. If this parameter is set to a small value, the event A3 trigger condition is easy to be met. Therefore, unnecessary handovers may be performed.

Related Commands LST CELL MOD CELL: LocalCellId=x, CellSpecificOffset=dB0;

5.1.3.3.2 CellIndividualOffset (Cell individual offset)

Description Meaning: This parameter indicates the cell-specific offset of the neighboring cell. It is used to define the trigger condition of event A3.

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Value type: enumeration Value range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Adjustment step: N/A Unit: dB Default value: dB0(0dB) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: dB0(0dB) This parameter is provided in 3GPP TS 36.331. Event A3 trigger condition: Mn + Ofn + Ocn – Hys > Ms + Ofs + Ocs + Off Ocn equals to the value of this parameter and is used to define the event A3 trigger condition. Impact of parameter setting on network performance: If this parameter is set to a large value, the event A3 trigger condition is easy to be met. Therefore, unnecessary handovers may be performed. If this parameter is set to a small value, the event A3 trigger condition is hard to be met. Therefore, handovers are delayed.

Related Commands LST EUTRANINTRAFREQNCELL:; MOD EUTRANINTRAFREQNCELL: LocalCellId=x, Mcc=x, Mnc=x, eNodeBId=x, CellId=x, CellIndividualOffset=dB0;

5.1.4 Measurement-Related Parameters 5.1.4.1 GapPatternType (GAP measurement pattern) Description Meaning: This parameter indicates the GAP measurement pattern that the eNodeB specifies based on the GAP pattern ID. For details, see 3GPP TS 36.331. Value type: enumeration Value range: GAP_PATTERN_TYPE_1(GAP type 1), GAP_PATTERN_TYPE_2(GAP type 2) Adjustment step: N/A Unit: none

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Default value: GAP_PATTERN_TYPE_1(GAP type 1) Parameter relationship: none Impact scope: cell

Setting Recommended value: GAP_PATTERN_TYPE_1(GAP type 1) If this parameter is set to GAP_PATTERN_TYPE_1, the measurement takes 6 ms and is performed every 40 ms. If this parameter is set to GAP_PATTERN_TYPE_2, the measurement takes 6 ms and is performed every 80 ms. Impact of parameter setting on network performance: This parameter has an impact on the GAP measurement speed.

Related Commands LST HOMEASCOMM:; MOD HOMEASCOMM: GapPatternType=GAP_PATTERN_TYPE_1;

5.1.4.2 EutranFilterCoeffRSRP (EUTRAN RSRP filter coefficient) Description Meaning: This parameter indicates the layer3 filtering coefficient for RSRP measurement on EUTRAN. Value type: enumeration Value range: FC0(FC0), FC1(FC1), FC2(FC2), FC3(FC3), FC4(FC4), FC5(FC5), FC6(FC6), FC7(FC7), FC8(FC8), FC9(FC9), FC11(FC11), FC13(FC13), FC15(FC15), FC17(FC17), FC19(FC19) Adjustment step: N/A Unit: none Default value: FC6(FC6) Parameter relationship: none Impact scope: cell

Setting This parameter is provided in 3GPP TS 36.331. If this parameter is set to a large value, the RSRP measurement result at the physical layer has a small impact on the measurement value after signal filtering. Therefore, the measurement value after signal filtering does not dramatically fluctuate with the radio channel condition changes, and the number of event measurement reports decreases.

Related Commands LST HOMEASCOMM:;

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MOD HOMEASCOMM: EutranFilterCoeffRSRP = FC6;

5.2 Cell Reselection Parameters 5.2.1 QRxLevMin (Minimum required RX level) Description Meaning: This parameter indicates the required minimum receive level used in criteria S. It affects the possibility for selecting an E-UTRAN cell. The value of this parameter is delivered in SIB1. The actual value is equal to the IE value in SIB1 multiplied by 2. For details, see 3GPP TS 36.331. Value type: integer Value range: -70 to -22 Adjustment step: 1 Unit: 2 dBm Default value: -64 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: -64 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell reduces the possibility for selecting the cell. This parameter must be properly set to ensure that the signal quality of the cell meets service requirements.

Related Commands MOD CELLSEL:; MOD CELLSEL: LocalCellId=x, QRxLevMin=-64;

5.2.2 QRxLevMinOffset (Minimum required RX level offset) Description Meaning: This parameter indicates the offset of the minimum receive level for a UE served by a visited public land mobile network (VPLMN) to attempt to select a higher-priority PLMN cell. The value of this parameter is delivered in SIB1. The actual value is equal to the IE value in SIB1 multiplied by 2. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 8

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Adjustment step: 1 Unit: 2 dB Default value: 0 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 0 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell increases the possibility for selecting the cell. If SIB1 does not contain the value of this parameter, the default value 0 is used.

Related Commands MOD CELLSEL:; MOD CELLSEL: LocalCellId=5, QRxLevMinOffset=0;

5.2.3 QQualMin (Minimum required RX quality level) Description Meaning: This parameter indicates the required minimum receive level used in criteria S. It affects the possibility for selecting an E-UTRAN cell. The value of this parameter is delivered in SIB1. The actual value is equal to the IE value in SIB1 multiplied by 2. For details, see 3GPP TS 36.331. Value type: integer Value range: -34 to -3 Adjustment step: 1 Unit: dB Default value: -18 Parameter relationship: If SIB3 contains ThrshServLowQ, this parameter must be delivered in SIB1. Impact scope: cell Scenario-based parameter: no

Setting Recommended value: -18 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell reduces the possibility for selecting the cell. This parameter must be properly set to

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ensure that the signal quality of the cell meets service requirements. If SIB1 does not contain the value of this parameter, the value -∞ is used.

Related Commands LST CELLSEL; MOD CELLSEL: LocalCellId=x, QQualMin=x;

5.2.4 QQualMinOffset (Minimum required RX quality level offset) Description Meaning: This parameter indicates the offset of the minimum receive signal quality for a UE served by a VPLMN to attempt to select a higher-priority PLMN cell. The value of this parameter is delivered in SIB1. The actual value is equal to the IE value in SIB1. For details, see 3GPP TS 36.331. Value type: integer Value range: 1 to 8 Adjustment step: 1 Unit: dB Default value: 1 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 1 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell increases the possibility for selecting the cell. If SIB1 does not contain the value of this parameter, the default value 0 is used.

Related Commands LST CELLSEL; MOD CELLSEL: QQualMinOffsetCfgInd= CFG, QQualMinOffset=x;

5.2.5 SIntraSearch (Threshold for intra frequency measurements) Description Meaning: This parameter indicates the threshold for triggering measurement of intra-frequency cells. The value of this parameter is delivered in SIB3. The actual value is equal to the IE value in SIB3 multiplied by 2. For details, see 3GPP TS 36.331.

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Value type: integer Value range: 0 to 31 Adjustment step: 1 Unit: 2 dB Default value: 29 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 29 Impact of parameter setting on network performance: Increasing the value of this parameter increases the possibility for triggering measurement of intra-frequency cells. If SIB3 does not contain the value of this parameter, the value ∞ is used and measurement of intra-frequency cells is performed.

Related Commands LST CELLRESEL:; MOD CELLRESEL: LocalCellId=x, SIntraSearchCfgInd=CFG, SIntraSearch=29;

5.2.6 ThrshServLow (Serving frequency lower priority threshold) Description Meaning: This parameter indicates the threshold for triggering cell reselection to a lower-priority inter-frequency or inter-RAT cell. The value of this parameter is delivered in SIB3. The actual value is equal to the IE value in SIB3 multiplied by 2. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 31 Adjustment step: 1 Unit: 2 dB Default value: 0 Parameter relationship: none Impact scope: cell

Setting Recommended value: 0 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell increases the possibility for reselecting the cell.

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Related Commands MOD CELLRESEL:; MOD CELLRESEL: LocalCellId=x, ThrshServLow=0;

5.2.7 SNonIntraSearch (Threshold for EUTRAN inter-frequency and inter-RAT measurements) Description Meaning: This parameter indicates the threshold for triggering measurement of inter-frequency or inter-RAT cells. The value of this parameter is delivered in SIB3. The actual value is equal to the IE value in SIB3 multiplied by 2. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 31 Adjustment step: 1 Unit: 2 dB Default value: 5 Parameter relationship: This parameter is optional, depending on the setting of the SNonIntraSearchCfgInd parameter: 

When SNonIntraSearchCfgInd is set to CFG, SNonIntraSearch must be set.

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When SNonIntraSearchCfgInd is set to NOT_CFG, SNonIntraSearch does not need to be set.

Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 5 Impact of parameter setting on network performance: Increasing the value of this parameter increases the possibility for triggering measurement of same-priority inter-frequency cells or lower-priority inter-frequency or inter-RAT cells. If SIB3 does not contain the value of this parameter, the value ∞ is used and t\measurement of same-priority inter-frequency cells or lower-priority inter-frequency or inter-RAT cells is performed.

Related Commands MOD CELLRESEL:; MOD CELLRESEL: LocalCellId=x, SNonIntraSearchCfgInd=CFG, SNonIntraSearch=5;

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5.2.8 SIntraSearchQ (RSRQ Threshold for intra frequency measurements) Description Meaning: This parameter indicates the RSRQ threshold for starting measurement of intra-frequency cells. The value of this parameter is delivered in SIB3. The actual value is equal to the IE value in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 31 Adjustment step: 1 Unit: dB Default value: 5 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 5 Impact of parameter setting on network performance: Increasing the value of this parameter increases the possibility for triggering measurement of intra-frequency cells.

Related Commands LST CELLRESEL; MOD CELLRESEL: SIntraSearchQ=x;

5.2.9 CellReselPriority (Cell reselection priority) Description Meaning: This parameter indicates the priority of the frequency being used by the UE. It affects the frequency usage. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 7 Adjustment step: 1 Unit: none Default value: 7 Parameter relationship: none

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Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 7 Impact of parameter setting on network performance: Cells in different RATs must have different priorities. Increasing the value of this parameter reduces the possibility for reselecting an inter-frequency cell.

Related Commands LST CELLRESEL:; MOD CELLRESEL: LocalCellId=x, CellReselPriority=0;

5.2.10 QRxLevMin (Minimum required RX level) Description Meaning: This parameter indicates the minimum receive level required for reselecting an intra-frequency E-UTRAN cell. It affects the possibility for reselecting an E-UTRAN cell. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: -70 to -22 Adjustment step: 1 Unit: 2 dBm Default value: -64 Parameter relationship: none Impact scope: cell

Setting Recommended value: -64 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell reduces the possibility for selecting the cell. This parameter must be properly set to ensure that the signal quality of the cell meets service requirements.

Related Commands LST CELLRESEL: MOD CELLRESEL: LocalCellId=x, QRxLevMin=-64;

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5.2.11 QqualMin (Minimum RX signal quality) Description Meaning: This parameter indicates the minimum receive signal quality required for reselecting an intra-frequency E-UTRAN cell. It affects the possibility for reselecting an intra-frequency E-UTRAN cell. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: -34 to -3 Adjustment step: 1 Unit: dB Default value: -18 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: -18 Impact of parameter setting on network performance: Increasing the value of this parameter for a cell reduces the possibility for selecting the cell. This parameter must be properly set to ensure that the signal quality of the cell meets service requirements.

Related Commands LST CELLRESEL; MOD CELLRESEL: LocalCellId=x,QqualMinCfgInd= CFG, QqualMin=x;

5.2.12 MeasBandWidth (Measurement bandwidth) Description Meaning: This parameter indicates the measurement bandwidth on the serving frequency on which the UE camps. It is used in intra-frequency measurements for cell reselection and those by UEs in RRC_CONNECTED mode. This parameter is optional; if it is not set, the downlink bandwidth of the serving cell is used by default. Value type: enumeration Value range: MBW6(1.4M), MBW15(3M), MBW25(5M), MBW50(10M), MBW75(15M), MBW100(20M) Adjustment step: N/A Unit: MHz Default value: MBW6(1.4M)

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Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: downlink bandwidth of the serving cell Impact of parameter setting on network performance: Increasing the value of this parameter reduces the measurement deviation but increases the amount of resources consumed.

Related Commands LST CELLRESEL:; MOD CELLRESEL: LocalCellId=x, SIntraSearchCfgInd=CFG, MeasBandWidthCfgInd=CFG, MeasBandWidth= MBW6;

5.2.13 CellQoffset (Cell offset) Description Meaning: This parameter indicates the offset between the serving cell and an intra-frequency neighboring cell. It affects the possibility for reselecting an intra-frequency cell. The value of this parameter is delivered in SIB4. For details, see 3GPP TS 36.331. Value type: enumeration Value range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Adjustment step: N/A Unit: dB Default value: dB0(0dB) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: dB0(0dB) Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility that the UE resides in the neighboring cell during cell reselection.

Related Commands LST EUTRANINTRAFREQNCELL:;

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MOD EUTRANINTRAFREQNCELL: LocalCellId=x, Mcc=x, Mnc=x, eNodeBId=x, CellId=x, CellQoffset=0;

5.2.14 QoffsetFreq (Frequency offset) Description Meaning: This parameter indicates the frequency offset of an inter-frequency E-UTRAN cell. It affects the possibility for reselecting an inter-frequency E-UTRAN cell. The value of this parameter is delivered in SIB5. For details, see 3GPP TS 36.331. Value type: enumeration Value range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Adjustment step: N/A Unit: dB Default value: dB0(0dB) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: dB0(0dB) Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility for selecting other frequency-specific cells. This parameter must be properly set to prevent the event that the UE fails to enter the target cell in time after exiting the original residence cell.

Related Commands LST EUTRANINTERNFREQ:; MOD EUTRANINTERNFREQ: LocalCellId=x, DlEarfcn=x, QoffsetFreq=0;

5.2.15 Qhyst (Hysteresis value for ranking criteria) Description Meaning: This parameter indicates the hysteresis for reselecting an intra-frequency cell or a cell with the same priority. It affects the possibility for reselecting an intra-frequency cell or a cell with the same priority to reduce ping-pong handovers. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer

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Value range: DB0_Q_HYST(0dB), DB1_Q_HYST(1dB), DB2_Q_HYST(2dB), DB3_Q_HYST(3dB), DB4_Q_HYST(4dB), DB5_Q_HYST(5dB), DB6_Q_HYST(6dB), DB8_Q_HYST(8dB), DB10_Q_HYST(10dB), DB12_Q_HYST(12dB), DB14_Q_HYST(14dB), DB16_Q_HYST(16dB), DB18_Q_HYST(18dB), DB20_Q_HYST(20dB), DB22_Q_HYST(22dB), DB24_Q_HYST(24dB) Adjustment step: N/A Unit: dB Default value: DB4_Q_HYST(4dB) Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: DB4_Q_HYST(4dB) Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility for reselecting an intra-frequency cell or a cell with the same priority.

Related Commands LST CELLRESEL; MOD CELLRESEL: LocalCellId=0, Qhyst=DB4_Q_HYST;

5.2.16 TReselEutran (Cell reselection timer value for EUTRAN) Description Meaning: This parameter indicates the time for reselecting an E-UTRAN cell. It controls the triggering of cell reselection to an intra-frequency cell or a cell with the same priority. If the conditions of a cell are better than those of the serving cell within the time specified by this parameter and the UE resides in the serving cell for more than 1 second, the UE will reselect the cell with better conditions. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 7 Adjustment step: 1 Unit: s Default value: 1 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

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Setting Recommended value: 1 Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility for reselecting an intra-frequency cell or a cell with the same priority.

Related Commands LST CELLRESEL; MOD CELLRESEL: LocalCellId=0x PMaxCfgInd=NOT_CFG, TReselEutran=1;

5.2.17 PMax (Max transmit power allowed) in CellResel Description Meaning: This parameter indicates the maximum transmit power of the UE during intra-frequency E-UTRAN cell reselection. It controls the uplink coverage radius. The value of this parameter is delivered in SIB3. For details, see 3GPP TS 36.331. Value type: integer Value range: -30 to 33 Adjustment step: 1 Unit: dBm Default value: 23 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 23 Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility for reselecting an inter-frequency cell. The value of this parameter is the same as the maximum power of the random access channel (RACH) and is set based on the actual coverage.

Related Commands LST CELLRESEL:; MOD CELLRESEL: LocalCellId=x, PMaxCfgInd=CFG, PMax=23;

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5.2.18 TreselectionHrpd (Cell reselection timer for HRPD) Description Meaning: This parameter indicates the evaluation time for cell reselection when the UE resides in a CDMA2000 HRPD cell. It determines the triggering of CDMA2000 HRPD cell reselection. The value of this parameter is delivered in SIB8. For details, see 3GPP TS 36.331. Value type: integer Value range: 0 to 7 Adjustment step: 1 Unit: s Default value: 1 Parameter relationship: none Impact scope: cell Scenario-based parameter: no

Setting Recommended value: 1 Impact of parameter setting on network performance: Increasing the value of this parameter reduces the possibility for reselecting the serving cell.

Related Commands LST CELLRESELCDMA2000:; MOD CELLRESELCDMA2000: LocalCellId=x, HrpdParamCfgInd=CFG, HrpdCellReselectParamCfgInd=CFG, TreselectionHrpd=1;

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6

Load Control

6.1 Load Control Algorithm 6.1.1 UlLdcSwitch (Switch for the Uplink Load Control Algorithm) Description Meaning: This parameter indicates whether the uplink load control function is enabled. Value type: enumeration Value range: On, Off Adjustment step: N/A Unit: none Default value: Off Parameter relationship: none Impact scope: cell

Setting If this parameter is set to Off, the uplink load is not controlled and no measure is taken to balance the uplink load when the load in the uplink is heavy. Consequently, the call drop rate increases and user experience is affected. If this parameter is set to On, the uplink overload can be detected and measures can be taken to actively release some resources to balance the uplink load. As a result, the call drop rate increases due to active resource release.

Related Commands LST CELLALGOSWITCH:; MOD CELLALGOSWITCH: LocalCellId=x, RacAlgoSwitch=UlLdcSwitch-x;

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6.1.2 DlLdcSwitch (Switch for the Downlink Load Control Algorithm) Description Meaning: This parameter indicates whether the downlink load control function is enabled. Value type: enumeration Value range: On, Off Adjustment step: N/A Unit: none Default value: Off Parameter relationship: none Impact scope: cell

Setting If this parameter is set to Off, the downlink load is not controlled and no measure is taken to balance the downlink load when the load in the downlink is heavy. Consequently, the call drop rate increases and user experience is affected. If this parameter is set to On, the downlink overload can be detected and measures can be taken to actively release some resources to balance the downlink load. As a result, the call drop rate increases due to active resource release.

Related Commands LST CELLALGOSWITCH:; MOD CELLALGOSWITCH: LocalCellId=x, RacAlgoSwitch=DlLdcSwitch-x;

6.2 Admission Control 6.2.1 GbrUsageSwitch (Switch for Detecting the Number of PRBs Occupied by GBR Services) Description Meaning: This parameter indicates whether the number of physical resource blocks (PRBs) occupied by GBR services is under control. Value type: enumeration Value range: On, Off Unit: none Default value: Off

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Impact scope: cell

Setting If this parameter is set to Off, GBR services may occupy excessive PRB resources because the scheduling algorithm preferentially guarantees GBR services except for IP Multimedia Subsystem (IMS) signaling. As a result, the admission rate is low. If this parameter is set to On, the proportion of PRBs occupied by GBR services is limited. This improves the admission rate and handover success rate, but uses more resources.

Related Commands LST CELLALGOSWITCH:; MOD CELLALGOSWITCH: LOCALCELLID=0, RACALGOSWITCH=GbrUsageSwitch-0;

6.2.2 GbrRbUsedHighThd (GBR used resource high proportion threshold) Description Meaning: This parameter indicates the upper threshold of the proportion of PRBs occupied by GBR services. This parameter applies to both the uplink and the downlink. If the proportion of PRBs occupied by GBR services is greater than the value of this parameter and GbrUsageSwitch under the RacAlgoSwitch parameter is set to On, the system rejects new GBR service access requests. Value type: integer Value range: 0 to 100 Unit: % Default value: 95 Impact scope: cell

Setting Decreasing the value of this parameter reduces the proportion of PRBs occupied by GBR services and the admission success rate of GBR services. As a result, PRBs cannot be fully used. Increasing the value of this parameter increases the offline rate of non-GBR services and the call drop rate.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, GBRRBUSEDHIGHTHD=0;

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6.2.3 GbrRbUsedLowThd (GBR used resource low proportion threshold) Description Meaning: This parameter indicates the lower threshold of the proportion of PRBs occupied by GBR services. If the PRB usage of GBR services falls below the threshold, the usage is considered to be low. Value type: integer Value range: 0 to 100 Unit: % Default value: 90 Impact scope: cell

Setting Decreasing the value of this parameter reduces the possibility for reporting the message indicating a low PRB usage and increases the number of GBR service admission failures. Increasing the value of this parameter increases the possibility for frequent switching between the high PRB usage indication and the low PRB usage indication.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, GBRRBUSEDLOWTHD=0;

6.2.4 DlRbLowThd (Downlink RB used ratio low threshold) Description Meaning: This parameter indicates the lower threshold of the proportion of downlink RBs occupied. It is used to determine whether a service admission request is accepted in the downlink. If the downlink RB usage reported by the MAC layer is less than the value of this parameter, the downlink RB usage is low. Value type: integer Value range: 10 to 100 Unit: % Default value: 90 Impact scope: cell

Setting Increasing the value of this parameter increases the possibility for generating the low RB usage indication in the downlink, which may cause excessive admission, but the protection

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for resource allocation is performed after the admission decision. Therefore, this parameter has no obvious impact on the overall QoS satisfaction rate. Decreasing the value of this parameter reduces the possibility for generating the low RB usage indication in the downlink and the admission success rate, but the protection for resource allocation is performed after the admission decision. Therefore, this parameter has no obvious impact on admission. In addition, when the value of the parameter is small, the load control algorithm may mistakenly trigger the service release, which will increase the call drop rate.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, DLRBLOWTHD=10;

6.2.5 DlRbHighThd (Downlink RB used ratio high threshold) Description Meaning: This parameter indicates the upper threshold of the proportion of downlink RBs occupied. It is used to determine whether a service admission request is accepted in the downlink. If the downlink RB usage reported by the MAC layer is greater than the value of this parameter, the downlink RB usage is high. Value type: integer Value range: 10 to 100 Unit: % Default value: 95 Impact scope: cell

Setting Increasing the value of this parameter reduces the possibility for generating the high RB usage indication in the downlink, which may cause excessive admission, but the protection for resource allocation is performed after the admission decision. In addition, when the value of the parameter is too large, load control actions are taken more slowly. Decreasing the value of this parameter increases the possibility for generating the high RB usage indication in the downlink, but the satisfaction rates are compared further for admission decision. Therefore, this parameter has no obvious impact on admission. In addition, when the value of the parameter is too small, excessive load control actions may be taken.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, DLRBHIGHTHD=10;

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6.2.6 UlRbLowThd (Uplink RB used ratio low threshold) Description Meaning: This parameter indicates the lower threshold of the proportion of uplink RBs occupied. It is used to determine whether a service admission request is accepted in the uplink. If the uplink RB usage reported by the MAC layer is less than the value of this parameter, the uplink RB usage is low. Value type: integer Value range: 10 to 100 Unit: % Default value: 90 Impact scope: cell

Setting Increasing the value of this parameter increases the possibility for generating the low RB usage indication in the uplink, which may cause excessive admission, but the protection for resource allocation is performed after the admission decision. Therefore, this parameter has no obvious impact on the overall QoS satisfaction rate. Decreasing the value of this parameter reduces the possibility for generating the low RB usage indication in the uplink and the admission success rate, but the protection for resource allocation is performed after the admission decision. Therefore, this parameter has no obvious impact on admission. In addition, when the value of the parameter is small, the load control algorithm may mistakenly trigger the service release, which will increase the call drop rate.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, ULRBLOWTHD=10;

6.2.7 UlRbHighThd (Uplink RB used ratio high threshold) Description Meaning: This parameter indicates the upper threshold of the proportion of uplink RBs occupied. It is used to determine whether a service admission request is accepted in the uplink. If the uplink RB usage reported by the MAC layer is greater than the value of this parameter, the uplink RB usage is high. Value type: integer Value range: 10 to 100 Unit: % Default value: 95 Impact scope: cell

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Setting Increasing the value of this parameter reduces the possibility for generating the high RB usage indication in the uplink, which may cause excessive admission, but the protection for resource allocation is performed after the admission decision. In addition, when the value of the parameter is too large, load control actions are taken more slowly. Decreasing the value of this parameter increases the possibility for generating the high RB usage indication in the uplink, but the satisfaction rates are compared further for admission decision. Therefore, this parameter has no obvious impact on admission. In addition, when the value of the parameter is too small, excessive load control actions may be taken.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, ULRBHIGHTHD=10;

6.2.8 MaxNonGBRBearerNum (Non-GBR max bearer number) Description Meaning: This parameter indicates the maximum number of non-GBR services excluding IMS services. This parameter applies to both the uplink and the downlink. Value type: integer Value range: 

0 to 560 for a cell with a 1.4 MHz bandwidth



0 to 1800 for a cell with a 3 MHz bandwidth



0 to 3000 for a cell with a 5 MHz bandwidth



0 to 3000 for a cell with a 10 MHz bandwidth



0 to 6000 for a cell with a 15 MHz bandwidth



0 to 6000 for a cell with a 20 MHz bandwidth

Unit: none Default value: 3000 Impact scope: cell

Setting Increasing the value of this parameter increases the number of non-GBR services admitted.

Related Commands LST CELLRACTHD; MOD CELLRACTHD: LOCALCELLID=0, MAXNONGBRBEARERNUM=0;

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6.3 Random Access Control 6.3.1 RootSequenceIdx (Root sequence index) Description Meaning: This parameter indicates the initial logical index number of the ZC root sequence used in preamble sequence generation. Value type: interval Value range: 0 to 837 Unit: none Default value: 0 Impact scope: cell

Setting Modifications on this parameter affect the orthogonality of the preamble sequences for the cell and its neighboring cells.

Related Commands LST CELL: LocalCellId=0 MOD CELL: LocalCellId=0, RootSequenceIdx=0

6.3.2 PreambleFmt (Preamble format) Description Meaning: This parameter indicates the format of a cell preamble. 

If this parameter is set to 0, preamble format 0 is used.



If this parameter is set to 1, preamble format 1 is used.



If this parameter is set to 2, preamble format 2 is used.



If this parameter is set to 3, preamble format 3 is used.



If this parameter is set to 4, preamble format 4 is used.

Preamble format 4 is supported only in TDD mode. Value type: interval Value range: 0 to 4 Unit: none Default value: 0 Impact scope: cell

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Setting Modifications on this parameter affect the PRACH coverage.

Related Commands LST CELL: LocalCellId=0; MOD CELL: LocalCellId=0, PreambleFmt=0;

6.3.3 HighSpeedFlag (High speed flag) Description Meaning: This parameter indicates the cell type. If this parameter is set to LOW_SPEED, data is transmitted at a low speed in the cell. If this parameter is set to HIGH_SPEED, data is transmitted at a high speed in the cell. If this parameter is set to ULTRA_HIGH_SPEED, data is transmitted at a super high speed in the cell. Value type: enumeration Value range: LOW_SPEED(Low speed cell flag), HIGH_SPEED(High speed cell flag), ULTRA_HIGH_SPEED(Ultra high speed cell flag), EXTRA_HIGH_SPEED(Extra high speed cell flag) Value range: 0, 1, 2 Unit: none Default value: LOW_SPEED Impact scope: cell

Setting Modifications on this parameter affect parameter settings related to the UE mobility speed.

Related Commands LST CELL: LocalCellId=0; MOD CELL: LocalCellId=0, HighSpeedFlag=LOW_SPEED;

6.4 Mapping from SIBs to SI Messages 6.4.1 SiMapSwitch (SIB mapping SI algorithm switch) Description Meaning: This parameter indicates whether the algorithm for the mapping from SIBs to SI messages is enabled. Value type: enumeration

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Value range: BOOLEAN_TRUE, BOOLEAN_FALSE Adjustment step: N/A Unit: none Default value: BOOLEAN_TRUE Parameter relationship: none Impact scope: cell

Setting If this parameter is set to BOOLEAN_TRUE, the algorithm for the mapping from SIBs to SI messages is enabled. This algorithm determines the following items: 

Mappings between SIBs and SI messages



Number of times an SI message is transmitted within the transmission window



Code rate

If this parameter is set to BOOLEAN_FALSE, the algorithm for the mapping from SIBs to SI messages is disabled. In this case, mappings between SIBs and SI messages are the same, that is, the code rate and the number of times an SI message is transmitted within the transmission window are the same. If the number of times an SI message is transmitted within the transmission window is set to a small value, such as 1 or 2, UEs at the cell edge may fail to properly receive system messages. You are advised to set this parameter to BOOLEAN_FALSE during downlink transmission peak rate tests to reduce resources used by system messages and improve the downlink transmission peak rate.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, SiMapSwitch=x;

6.4.2 Sib2Period (SIB2 period) Description Meaning: This parameter indicates the interval at which a system information block type 2 (SIB2) is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF16 Parameter relationship: none Impact scope: cell

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Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB2. Consequently, less system resources are used. However, the delay for the UE to read an SIB2 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB2s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib2Period =x;

6.4.3 Sib3Period (SIB3 period) Description Meaning: This parameter indicates the interval at which an SIB3 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF16 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB3. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB3. Consequently, less system resources are used. However, the delay for the UE to read an SIB3 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB3s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib3Period =x;

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6.4.4 Sib4Period (SIB4 period) Description Meaning: This parameter indicates the interval at which an SIB4 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF32 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB4. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB4. Consequently, less system resources are used. However, the delay for the UE to read an SIB4 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB4s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib4Period =x;

6.4.5 Sib5Period (SIB5 period) Description Meaning: This parameter indicates the interval at which an SIB5 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF32 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB5. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

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Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB5. Consequently, less system resources are used. However, the delay for the UE to read an SIB5 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB5s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib5Period =x;

6.4.6 Sib6Period (SIB6 period) Description Meaning: This parameter indicates the interval at which an SIB6 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF64 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB6. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB6. Consequently, less system resources are used. However, the delay for the UE to read an SIB6 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB6s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib6Period =x;

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6.4.7 Sib7Period (SIB7 period) Description Meaning: This parameter indicates the interval at which an SIB7 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF64 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB7. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB7. Consequently, less system resources are used. However, the delay for the UE to read an SIB7 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB7s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib7Period =x;

6.4.8 Sib8Period (SIB8 period) Description Meaning: This parameter indicates the interval at which an SIB8 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF64 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB8. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

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Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB8. Consequently, less system resources are used. However, the delay for the UE to read an SIB8 increases. You are advised to set this parameter to a large value during downlink peak rate tests. This is to decrease the amount of system resources used and improve the transmission peak rate while ensuring SIB8s are received properly.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib8Period =x;

6.4.9 Sib10Period (SIB10 period) Description Meaning: This parameter indicates the interval at which an SIB10 is transmitted. Value type: enumeration Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF16 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB10. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB10. Consequently, less system resources are used. However, the delay for the UE to read an SIB10 increases.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib10Period =x;

6.4.10 Sib11Period (SIB11 period) Description Meaning: This parameter indicates the interval at which an SIB11 is transmitted. Value type: enumeration

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Value range: RF8, RF16, RF32, RF64, RF128, RF256, RF512 Adjustment step: N/A Unit: frame Default value: RF32 Parameter relationship: This parameter and SIWindowLength determine the maximum number of times an eNodeB transmits an SIB11. The SIBs with the same period can be mapped to the same SI. Impact scope: cell

Setting Increasing the value of this parameter reduces the number of times an eNodeB transmits an SIB11. Consequently, less system resources are used. However, the delay for the UE to read an SIB11 increases.

Related Commands LST CELLSIMAP: LocalCellId=x; MOD CELLSIMAP: LocalCellId=x, Sib11Period =x;

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7

Power Control

7.1 Uplink Power Control 7.1.1 PUSCH 7.1.1.1 P0NominalPUSCH (P0 nominal PUSCH) Description Meaning: This parameter indicates the P0 value of the PUSCH. It is used in open-loop power control for calculating the UE transmit power. Value type: integer Value range: -126 to 24 Adjustment step: 1 Unit: dBm Default value: -67 Parameter relationship: none Impact scope: eNodeB

Setting Impact of parameter setting on network performance: Increasing the value of this parameter increases the eNodeB throughput. However, interference to neighboring cells also increases and therefore the network throughput decreases.

Related Commands LST CELLULPCCOMM MOD CELLULPCCOMM: LocalCellId=x, P0NominalPUSCH=-67;

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7.1.1.2 PassLossCoeff (Path loss coefficient) Description Meaning: This parameter indicates the compensation factor for PUSCH path loss. For details about this parameter, see 3GPP TS 36.213. Value type: enumeration Value range: AL0(0), AL04(0.4), AL05(0.5), AL06(0.6), AL07(0.7), AL08(0.8), AL09(0.9), AL1(1) Adjustment step: N/A Unit: none Default value: 0.7 Parameter relationship: none Impact scope: eNodeB

Setting This parameter is set based on the average network throughput and the edge throughput or set based on operator's requirements. Parameter adjustment scenario: none Impact of parameter setting on network performance: Increasing the value of this parameter improves the cell throughput. Decreasing the value of this parameter improves the network throughput.

Related Commands LST CELLULPCCOMM MOD CELLULPCCOMM: LocalCellId=0, PassLossCoeff=AL07;

7.1.1.3 DeltaMcsEnabled (Delta-MCS enable or disable indication) Description Meaning: This parameter indicates whether the UE transmit power is adjusted based on the MCS used. It is delivered to a UE in an RRC message. Value type: enumeration Value range: UU_DISABLE(Disable), UU_ENABLE(Enable) Adjustment step: N/A Unit: none Default value: UU_DISABLE(Disable) Parameter relationship: FFS Impact scope: eNodeB

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Setting Parameter adjustment scenario: none Impact of parameter setting on network performance: If this parameter is set to UU_DISABLE(Disable), UE transmit power is adjusted using only the f(i). If this parameter is set to UU_ENABLE(Enable), the UE transmit power can be adjusted using a proper MCS. In this way, eNodeB throughput increases.

Related Commands LST CELLULPCDEDIC MOD CELLULPCDEDIC: LocalCellId=x, DeltaMcsEnabled=x;

7.1.1.4 FilterRsrp (RSRP filtering coefficient) Description Meaning: This parameter indicates the filtering coefficient used by a UE for path loss estimation during RSRP measurement. Value type: enumeration Value range: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19 Adjustment step: N/A Unit: none Default value: 6 Parameter relationship: none Impact scope: eNodeB

Setting Increasing the value of this parameter reduces the impact of the RSRP measured this time on the RSRP filtered.

Related Commands LST CELLULPCDEDIC MOD CELLULPCDEDIC: LocalCellId=x, FilterRsrp = x;

7.1.2 PUCCH 7.1.2.1 P0NominalPUCCH (P0 nominal PUCCH) Description Meaning: This parameter indicates the UE transmit power expected by the eNodeB on condition that PUCCH signals are demodulated properly. Value type: integer

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Value range: -127 to -96 Adjustment step: 1 Unit: dBm Default value: -105 Parameter relationship: none Impact scope: eNodeB

Setting Parameter adjustment scenario: none Impact of parameter setting on network performance: Increasing the value of this parameter increases the cell throughput, but reduces the network throughput. Decreasing the value of this parameter reduces interference to neighboring cells and improves the network throughput.

Related Commands LST CELLULPCCOMM MOD CELLULPCCOMM: LocalCellId=x, P0NominalPUCCH=x;

7.1.3 PRACH 7.1.3.1 PreambInitRcvTargetPwr (Preamble initial received target power) Description Meaning: This parameter indicates the UE transmit power expected by the eNodeB if PRACH preamble format 0 is used and requirements for preamble detection performance are met. It is delivered in a broadcast message. Value type: integer Value range: -240, -180 Adjustment step: 2 Unit: dBm Default value: -104 Parameter relationship: none Impact scope: eNodeB

Setting Parameter adjustment scenario: This parameter is updated when the IN at the physical layer changes and the difference between the reported IN and the reference IN is greater than the specified threshold. Impact of parameter setting on network performance: Increasing the value of this parameter increases the cell throughput, but reduces the network throughput. Decreasing the value of this parameter reduces interference to neighboring cells and improves the network throughput.

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Related Commands LST RACHCFG MOD RACHCFG: LocalCellId=x, PreambInitRcvTargetPwr=x;

7.1.3.2 PwrRampingStep (Power ramping step) Description Meaning: This parameter indicates the step by which the transmit power for random access preambles increases each time after a PRACH access failure. Value type: integer Value range: DB0_PWR_RAMPING_STEP(0dB), DB2_PWR_RAMPING_STEP(2dB), DB4_PWR_RAMPING_STEP(4dB), DB6_PWR_RAMPING_STEP(6dB) Adjustment step: 2 Unit: dB Default value: DB2_PWR_RAMPING_STEP(2dB) Parameter relationship: none Impact scope: eNodeB

Setting Parameter adjustment scenario: If a UE fail to access the network through the PRACH after several attempts, the value of this parameter must be increased to enable the UE to successfully access the network. Impact of parameter setting on network performance: Increasing the value of this parameter increases the cell throughput, but reduces the network throughput. Decreasing the value of this parameter reduces interference to neighboring cells and improves the network throughput.

Related Commands LST RACHCFG MOD RACHCFG: LocalCellId=x, PwrRampingStep=x;

7.1.3.3 DeltaPreambleMsg3 (Delta preamble value for msg3) Description Meaning: This parameter indicates the offset between the transmit power for the preamble to transmit message 3 and the transmit power for the preamble to transmit message 1. It is delivered in a broadcast message. For details, see the 3GPP TS 36.213. Value type: enumeration Value range: -1 to 6 Adjustment step: 1 Unit: dB

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Default value: 4 Parameter relationship: none Impact scope: eNodeB

Setting Parameter adjustment scenario: none Impact of parameter setting on network performance: Decreasing the value of this parameter reduces the transmit power and the cell throughput. Increasing the value of this parameter increases interference to neighboring cells and reduces the network throughput.

Related Commands LST CELLULPCCOMM MOD CELLULPCCOMM: LocalCellId=x, DeltaPreambleMsg3=x;

7.2 Downlink Power Control 7.2.1 PDSCH 7.2.1.1 PdschPaAdjSwitch (PA adjusting switch) Description Meaning: This parameter indicates whether the PDSCH PA algorithm is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: OFF Impact scope: cell

Setting If this parameter is set to ON, the PDSCH PA algorithm is enabled. If this parameter is set to OFF, the PDSCH PA algorithm is disabled.

Related Commands LST CELLDLPCPDSCHPA: LOCALCELLID=x; MOD CELLDLPCPDSCHPA: LocalCellId=x, PdschPaAdjSwitch=x;

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7.2.1.2 PdschSpsPcSwitch (Downlink Semi-Persistent Power Control Switch) Description Meaning: This parameter indicates whether the semi-persistent power control algorithm is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: OFF Impact scope: cell

Setting If this parameter is set to OFF, each PDSCH resource element (RE) is allocated the same transmit power. If this parameter is set to ON, PDSCH semi-persistent power control is enabled to ensure the VoIP services modulated using quadrature phase shift keying (QPSK) run properly.

Related Commands LST CELLALGOSWITCH: LOCALCELLID=x; MOD CELLALGOSWITCH: LocalCellId=x, DlPcAlgoSwitch=PdschSpsPcSwitch-x;

7.2.1.3 ReferenceSignalPwr (Reference signal power) Description Meaning: This parameter indicates the power used to transmit reference signals in a cell. Value type: float Value range: -600, 500 Adjustment step: 0.1 Unit: dBm Default value: 

FDD: 18.2



TDD: 15.2

Parameter relationship: none Impact scope: cell

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Setting 

Coverage: Increasing the value of this parameter may cause cross-cell coverage. Decreasing the value of this parameter may cause blind areas.



Interference: Increasing the value of this parameter increases interference to other cells.



Channel estimation: Increasing the value of this parameter increases the channel estimation accuracy, decreases the demodulation threshold and increases the receive sensitivity. However, the interference to neighboring cells increases.



Capacity: Increasing the value of this parameter increases the coverage radius and reduces the power used to transmit data. Accordingly, the system capacity decreases.

In summary, this parameter must be properly set by considering the coverage, capacity, channel estimation accuracy, and interference.

Related Commands LST PDSCHCFG: LOCALCELLID=x; MOD PDSCHCFG: LOCALCELLID=x, ReferenceSignalPwr=x;

7.2.1.4 RaRspPwr (Rach response power) Description Meaning: This parameter indicates the offset between the power for the PDSCH to transmit an RA response and the RS transmit power. It is used to determine the power for the PDSCH to transmit an RA response. Value type: float Value range: 3175 to 3175 Adjustment step: 0.005 Unit: dB Default value: 0 Impact scope: cell

Setting Recommended value: -3 for peak transmit power tests and for a system bandwidth of 1.4 MHz, 3 MHz, or 5 MHz in common scenarios and 0 for other system bandwidths in common scenarios Increasing the value of this parameter improves the RA success rate. However, interference to neighboring cells also increases and therefore fewer RBs are available to other PDSCHs within the same TTI. Accordingly, the cell throughput decreases. In peak transmit power tests, you are advised to set this parameter to a value the same as Pa.

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, RaRspPwr=x;

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7.2.1.5 PchPwr (PCH power) Description Meaning: This parameter indicates the offset between the power for the PDSCH to transmit paging messages and the RS transmit power. It is used to determine the power for the PDSCH to transmit paging messages. Value type: float Value range: 3175 to 3175 Adjustment step: 0.005 Unit: dB Default value: 0 Impact scope: cell

Setting Recommended value: -3 for peak transmit power tests and for a system bandwidth of 1.4 MHz, 3 MHz, or 5 MHz in common scenarios and 0 for other system bandwidths in common scenarios Impact of parameter setting on network performance: Increasing the value of this parameter improves the success rate of the UE receiving paging messages. However, interference to neighboring cells also increases and therefore fewer RBs are available to other PDSCHs within the same TTI. Accordingly, the cell throughput decreases. In peak transmit power tests, you are advised to set this parameter to a value the same as Pa.

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, PchPwr=x;

7.2.1.6 Pb (PB) Description Meaning: This parameter indicates the ratio of the transmit power of PDSCH type B to the transmit power of the PDSCH type A. It is used to determine the transmit power of the PDSCH type B. This parameter is adjusted based on the following table when the RS transmit power is boosted to balance power between the orthogonal frequency division multiplexing (OFDM) symbols of the PDSCH type A and the OFDM symbols of the PDSCH type B. Table 7-1 Mapping between the multiple that the RS transmit power is boosted and ρB/ρA PB

B /  A

One Antenna Port

Two or Four Antenna Ports

0

1

5/4

1

4/5

1

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2

3/5

3/4

3

2/5

1/2

PB indicates the multiple that the RS transmit power is boosted. Value type: enumeration Value range: 0, 1, 2, 3 Adjustment step: N/A Unit: none Default value: 0 for a signal-antenna eNodeB and 1 for a dual- or four-antenna eNodeB Impact scope: cell

Setting Increasing the value of this parameter increases the RS transmit power, improves the channel estimation performance, and enhances the PDSCH demodulation performance. However, the transmit power of the PDSCH type B decreases. This parameter must be properly set to improve the cell coverage.

Related Commands LST PDSCHCFG: LocalCellId=x; MOD PDSCHCFG: LocalCellId=x, Pb=x;

7.2.1.7 CcuPa (Center UE PA) Description Meaning: This parameter indicates the center UE PA when the downlink static ICIC algorithm is enabled. Value type: enumeration Value range: -6, -4.77, -3, -1.77, 0, 1, 2, 3 Adjustment step: N/A Unit: dB Default value: -6 Impact scope: cell

Setting Decreasing the value of this parameter reduces the center UE power. Accordingly, the center UE throughput and the cell throughput decrease. Increasing the value of this parameter increases interference to neighboring cells. This parameter must be set based on the simulation results.

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Related Commands LST CELLDLPCPDSCH: LocalCellId=x;; MOD CELLDLPCPDSCH: LocalCellId=x, CcuPa=x;

7.2.1.8 CeuPa (Edge UE PA) Description Meaning: This parameter indicates the edge UE PA when the downlink static ICIC algorithm is enabled. Value type: enumeration Value range: -6, -4.77, -3, -1.77, 0, 1, 2, 3 Adjustment step: N/A Unit: dB Default value: -1.77 Impact scope: cell

Setting Decreasing the value of this parameter reduces the edge UE transmit power and edge UE throughput. Increasing the value of this parameter reduces the center UE transmit power and the cell throughput. This parameter must be set based on the simulation results.

Related Commands LST CELLDLPCPDSCH: LocalCellId=x; MOD CELLDLPCPDSCH: LocalCellId=x, CeuPa=x;

7.2.1.9 PaPcOff (PA for even power distribution) Description Meaning: This parameter indicates UE PA when the same power is assigned to UEs in a cell, the PDSCH power control algorithm is disabled, and the static ICIC algorithm is disabled. Value type: enumeration Value range: -6, -4.77, -3, -1.77, 0, 1, 2, 3 Adjustment step: N/A Unit: dB Default value: -3 Impact scope: cell

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Setting Recommended value: -3 for dual- and four-antenna eNodeBs, and 0 for single-antenna eNodeBs Impact of parameter setting on network performance: When the RS transmit power remains unchanged, increasing the value of this parameter increases the power of all UEs in a cell and improves the MCS level. However, the cell throughput may decrease because the cell bandwidth is limited.

Related Commands LST CELLDLPCPDSCHPA: LOCALCELLID=x; MOD CELLDLPCPDSCHPA: LocalCellId=x, PaPcOff=x;

7.2.2 PDCCH 7.2.2.1 DediDciPwrOffset (DCI power offset for dedicated control) Description Meaning: This parameter indicates the offset between the power used to transmit downlink control information (DCI) and the RS transmit power when the PDCCH carries dedicated control information. Value type: enumeration Value type: float Value range: -150, 150 Adjustment step: 0.1 Unit: dB Impact scope: cell

Setting Recommended value: -30 Impact of parameter setting on network performance: Increasing the value of this parameter increases the PDCCH transmit power and improves the coverage. However, the interference to neighboring cells increases. Therefore, more power is used. Decreasing the value of this parameter increases the possibility of forming coverage holes.

Related Commands LST CELLDLPCPDCCH: LocalCellId=x; MOD CELLDLPCPDCCH: LocalCellId=x, DediDciPwrOffset=x;

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7.2.2.2 PdcchPcSwitch (PdcchBoundaryPcSwitch) Description Meaning: P This parameter indicates whether the PDCCH border power control function is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: ON Impact scope: cell

Setting If this parameter is set to OFF, the PDCCH border power control function is disabled and the power at the cell border is not adjusted. In addition, the PDCCH supports only a few encoding rates and does not support the HARQ feature. Therefore, UE demodulation performance may be different if this parameter is set to OFF. If this parameter is set to ON, the PDCCH border power control function is enabled to ensure that each UE has the same demodulation performance.

Related Commands LST CELLALGOSWITCH: LOCALCELLID=x; MOD CELLALGOSWITCH: LocalCellId=x, DlPcAlgoSwitch=PdcchPcSwitch-x;

7.2.3 PHICH 7.2.3.1 PhichInnerLoopPcSwitch (PHICH Power Control Switch) Description Meaning: This parameter indicates whether the PHICH inner-loop power control function is enabled. Value type: enumeration Value range: ON, OFF Adjustment step: N/A Unit: none Default value: OFF Impact scope: cell

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Setting If this parameter is set to ON, the PHICH inner-loop power control function is enabled. If this parameter is set to OFF, the PHICH inner-loop power control function is disabled and only PHICH initial transit power is used. If this parameter is set to ON, the eNodeB controls the physical channel to make the receive SINR to converge to the target SINR.

Related Commands LST CELLALGOSWITCH: LOCALCELLID=x; MOD CELLALGOSWITCH: LocalCellId=x, DlPcAlgoSwitch=PhichInnerLoopPcSwitch-x;

7.2.3.2 PwrOffset (Phich Pc Off Power Offset) Description Meaning: This parameter indicates the offset between the PHICH transmit power and the RS transmit power. This parameter is used when PHICH power control is disabled. Value type: float Value range: -150, 150 Adjustment step: 0.1 Unit: dB Default value: 0 Parameter relationship: none Impact scope: cell

Setting Recommended value: -30 for a system bandwidth of 1.4 MHz, 3 MHz, or 5 MHz in common scenarios and 0 for other system bandwidths in common scenarios Impact of parameter setting on network performance: Increasing the value of this parameter improves the PHICH demodulation performance. However, the number of UEs served by the PHICH may decrease because the power is limited. In addition, increasing the value of this parameter increases interference to neighboring cells.

Related Commands LST CELLDLPCPHICH: LocalCellId=x,; MOD CELLDLPCPHICH: LocalCellId=x, PwrOffset=x;

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7.2.4 PCFICH 7.2.4.1 PcfichPwr (PCFICH power) Description Meaning: This parameter indicates the offset between the PCFICH transmit power and the RS transmit power. It is used to determine the PCFICH transmit power. Value type: float Value range: -3175, 3175 Adjustment step: 0.005 Unit: dB Parameter relationship: none Impact scope: cell

Setting Recommended value: 

LTE FDD: -600



LTE TDD: 0 for bandwidths of 10 MHz, 15 MHz, and 20 MHz, and -600 for other bandwidths

Impact of parameter setting on network performance: Increasing the value of this parameter improves the coverage. However, the interference to neighboring cells increases. Therefore, more power is used. Decreasing the value of this parameter increases the possibility of forming coverage holes.

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, PcfichPwr=x;

7.2.5 PBCH 7.2.5.1 PbchPwr (PBCH power) Description Meaning: This parameter indicates the offset between the PBCH transmit power and the RS transmit power. It is used to determine the PBCH transmit power. Value type: float Value range: -3175, 3175 Adjustment step: 0.005 Unit: dB Default value: -600

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Parameter relationship: none Impact scope: cell

Setting Increasing the value of this parameter improves the coverage. However, the interference to neighboring cells increases. Therefore, more power is used. Decreasing the value of this parameter increases the possibility of forming coverage holes.

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, PbchPwr=x;

7.2.6 SCH 7.2.6.1 SchPwr (SCH power) Description Meaning: This parameter indicates the offset between the synchronization signal transmit power and the RS transmit power. It is used to determine the synchronization signal transmit power. Value type: float Value range: -3175, 3175 Adjustment step: 0.005 Unit: dB Default value: 0 Parameter relationship: none Impact scope: cell

Setting Recommended value: -600 for peak transmit power tests and for a system bandwidth of 1.4 MHz, 3 MHz, or 5 MHz in common scenarios and 0 for other system bandwidths in common scenarios Impact of parameter setting on network performance: Increasing the value of this parameter improves the coverage. However, the interference to neighboring cells increases. Therefore, more power is used. Decreasing the value of this parameter increases the possibility of forming coverage holes.

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, SchPwr=x;

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7.2.7 PRS 7.2.7.1 PrsPwr (Prs power) Description Meaning: This parameter indicates the offset between the pilot transmit power and the RS transmit power. Value type: float Value range: -3175, 3175 Adjustment step: 0.005 Unit: dB Default value: 0 Parameter relationship: none Impact scope: cell

Setting none

Related Commands LST CELLCHPWRCFG: LocalCellId=x; MOD CELLCHPWRCFG: LocalCellId=x, PrsPwr=x;

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A

Acronyms and Abbreviations

A AMC

adaptive modulation and coding

ANR

automatic neighbor relation

AQM

active queue management

C CEU

cell edge user

CPU

central processing unit

CQI

channel quality indicator

D DC

direct current

DCI

downlink control information

DMRS

demodulation reference signal

DRX

discontinuous reception

E EPF

enhanced proportional fair

F FDD

frequency division duplex

I IBLER

initial block error rate

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ICIC

inter-cell interference coordination

IoT

Interference Over Thermal

M MCS

modulation and coding scheme

MIMO

multiple-input multiple-output

MRO

mobility robust optimization

O OC

orthogonal cover

P PDCCH

physical downlink control channel

PF

proportional fair

PUCCH

physical uplink control channel

Q QoS

quality of service

R RAN

radio access network

RR

round robin

S SIB

system information block

SINR

signal to interference plus noise ratio

SR

scheduling request

SRI

scheduling request indication

SRS

sounding reference signal

T TCP

Transmission Control Protocol

TDD

time division duplex

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TRM

transceiver module

TTI

transmission time interval

V VoIP

voice over Internet Protocol