LTE Important Parameters and Switches

PDSCHPAADJSWITCH MO Parameter ID Parameter Name NE MML Command

CellDlPcPdschPa PdschPaAdjSwitch PDSCHPAADJSWITCH eNodeB LST CELLDLPCPDSCHPA MOD CELLDLPCPDSCHPA

Meaning

Indicates the switch for adjusting the PA through power control on the PDSCH. If this parameter is set to ON, the PA is adjusted dynamically when the channel quality is extremely good or bad.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LBFD-002016 Dynamic Downlink Power Allocation Enumeration values

GUI Value Range OFF(Off), ON(On) Enumeration Number/Bit Unit

OFF~0, ON~1 None

Actual Value Range

OFF, ON

Default Value

OFF(Off)

Recommended Value

OFF(Off)

Impact Parameter Relationship Access

CellDlPcPdschPa None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After

Modification Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

Not involved None The parameter modification has no impact on the equipment. If this switch is on, the PA is adjusted. If this switch is off, the PA is not adjusted. V100R002C00 Radio Default/Recommended

Parent topic: CellDlPcPdschPa

MimoAdaptiveSwitch MO

MimoAdaptiveParaCfg

Parameter ID

MimoAdaptiveSwitch

Parameter Name

MimoAdaptiveSwitch

NE MML Command

eNodeB LST MIMOADAPTIVEPARACFG MOD MIMOADAPTIVEPARACFG

Meaning

Indicates the switches related to adaptive MIMO. ModeCOLoopSwitch: is used to control whether adaptive switching between the open-loop mode and the closed-loop mode is applied to downlink transmission of an eNodeB that is equipped with multiple antennas. ModeDivMuxSwitch: is used to control whether adaptive switching

between the diversity mode and the multiplexing mode is applied to downlink transmission of an eNodeB that is equipped with multiple antennas. IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID

LBFD-002017 LOFD-001003

Feature Name

DL 2x2 MIMO DL 4x2 MIMO

Value Type

Bit field type

GUI Value Range ModeCOLoopSwitch(Open loop and Closed loop Switch), ModeDivMuxSwitch(Diversity and Multiplexing Switch) Enumeration Number/Bit Unit

ModeCOLoopSwitch~0, ModeDivMuxSwitch~1 None

Actual Value Range

ModeCOLoopSwitch, ModeDivMuxSwitch

Default Value

Open loop and Closed loop Switch:off, Diversity and Multiplexing Switch:on

Recommended Value

Open loop and Closed loop Switch:off, Diversity and Multiplexing Switch:on

Impact Parameter Relationship Access

MimoAdaptiveParaCfg None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved Interruption Duration (min) Caution

Not involved None

Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

The parameter modification has no impact on the equipment. The setting of this parameter determines the transmission modes that are applicable to the UEs served by a multi-antenna eNodeB and hence affects the performance such as the throughput and coverage. V100R001C01 Radio Engineering Design

Parent topic: MimoAdaptiveParaCfg

DELTAMCSENABLED MO Parameter ID Parameter Name NE MML Command

CellUlPcDedic DeltaMcsEnabled DELTAMCSENABLED eNodeB LST CELLULPCDEDIC MOD CELLULPCDEDIC

Meaning

Indicates whether the transmit power of the UE is adjusted according to the difference between MCSs. indication is contained in an RRC message signaled to the UE. In the message, this indication occupies one bit. The value 0, which means disabled, indicates that ΔTF is equal to 0 because Ks is equal to 0. The value 1, which means enabled, indicates that ΔTF is calculated on the condition that Ks is equal to 1.25.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LBFD-002026 Uplink Power Control Enumeration values

GUI Value Range UU_DISABLE(Disable), UU_ENABLE(Enable) Enumeration Number/Bit Unit

UU_DISABLE~0, UU_ENABLE~1 None

Actual Value Range

UU_DISABLE, UU_ENABLE

Default Value

UU_DISABLE(Disable)

Recommended Value

UU_DISABLE(Disable)

Impact Parameter Relationship Access

CellUlPcDedic None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance

Not involved None The parameter modification has no impact on the equipment. When Ks is equal to 0, the transmit power can be adjusted according to only closed-loop TPC commands. When Ks is equal to 1.25, the transmit power can be adjusted by means of selecting different

MCSs during scheduling. This helps the UE to quickly adapt to changes in channel conditions and increases the cell throughput. Introduced in Version... Attribute

V100R001C01 Radio

Default/Recommended Initial Value Setting Source Parent topic: CellUlPcDedic

ROHCSwitch MO

PDCPROHCPara

Parameter ID

ROHCSwitch

Parameter Name

ROHCSwitch

NE MML Command

eNodeB LST PDCPROHCPARA MOD PDCPROHCPARA

Meaning

Indicates whether the eNodeB supports ROHC. This switch needs to be set to ON when the eNodeB is expected to support VoIP or video services.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LOFD-001017 RObust Header Compression (ROHC) Enumeration values

GUI Value Range OFF(Off), ON(On) Enumeration Number/Bit Unit

OFF~0, ON~1 None

Actual Value Range

OFF, ON

Default Value

OFF(Off)

Recommended Value

OFF(Off)

Impact Parameter Relationship Access

PDCPROHCPara None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

Not involved None The parameter modification has no impact on the equipment. ROHC header compression helps reduce header overhead. The reduction is especially significant for services with small data packets, such as VoIP services. V100R001C01 Radio Engineering Design

Parent topic: PDCPROHCPara

HighestMode MO Parameter ID

PDCPROHCPara HighestMode

Parameter Name NE MML Command

HighestMode eNodeB LST PDCPROHCPARA MOD PDCPROHCPARA

Meaning

Indicates the highest mode of ROHC operation. In Unidirectional Mode (U-mode), packets are sent in one direction only (that is, from the compressor to the decompressor), and a feedback channel from the decompressor to the compressor is undesirable. Therefore, the Umode provides the lowest reliability but also the lowest feedback overhead, compared with the other two modes. In Bi-directional Optimistic Mode (O-mode), the decompressor sends the compressor the feedback, which indicates errors or context synchronization successes. Therefore, the O-mode provides higher reliability than the Umode but causes a lower amount of feedback information than the R-mode. In Bi-Directional Reliable Mode (R-mode), the reliability of context synchronization between the compressor and the decompressor is higher than that in any other mode; however, because of frequent feedback, the Rmode causes the greatest link overhead.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LOFD-001017 RObust Header Compression (ROHC) Enumeration values

GUI Value Range U_MODE(Unidirectional Mode), O_MODE(Bi-directional Optimistic Mode), R_MODE(Bi-Directional Reliable Mode) Enumeration Number/Bit Unit

U_MODE~1, O_MODE~2, R_MODE~3 None

Actual Value Range

U_MODE, O_MODE, R_MODE

Default Value

U_MODE(Unidirectional Mode)

Recommended Value

U_MODE(Unidirectional Mode)

Impact Parameter Relationship Access

PDCPROHCPara None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute

Not involved None The parameter modification has no impact on the equipment. The reliability of packet transmission and the network link overhead are affected. V100R001C01 Radio

Engineering Design Initial Value Setting Source Parent topic: PDCPROHCPara

Profiles MO

PDCPROHCPara

Parameter ID

Profiles

Parameter Name

Profiles

NE

eNodeB

MML Command

LST PDCPROHCPARA MOD PDCPROHCPARA

Meaning

Indicates the compression profile supported by the eNodeB. Under the ROHC framework, different header compression algorithms are applicable to different protocols. Profiles define the header compression protocols (such as RTP/UDP/IP or TCP/IP), which are under the same ROHC framework, for specific types of packet streams. Each profile has a unique identifier. As defined by LTE specifications, the eNodeB supports the following profiles: profile 0x0001 (usage: RTP/UDP/IP; reference: RFC 3095 and RFC 4815), profile 0x0002 (usage: UDP/IP; reference: RFC 3095 and RFC 4815), profile 0x0003 (usage: ESP/IP; reference: RFC 3095 and RFC 4815), and profile 0x0004 (usage: IP; reference: RFC 3843 and RFC 4815).

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LOFD-001017 RObust Header Compression (ROHC) Bit field type

GUI Value Range Profile0x0001(Profile0x0001), Profile0x0002(Profile0x0002), Profile0x0003(Profile0x0003), Profile0x0004(Profile0x0004) Enumeration Number/Bit Unit

Profile0x0001~0, Profile0x0002~1, Profile0x0003~2, Profile0x0004~3 None

Actual Value Range

Profile0x0001, Profile0x0002, Profile0x0003, Profile0x0004

Default Value

Profile0x0001:on, Profile0x0002:on, Profile0x0003:on, Profile0x0004:on

Recommended Value

Profile0x0001:on, Profile0x0002:on, Profile0x0003:on, Profile0x0004:on

Impact Parameter Relationship Access

PDCPROHCPara None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification

Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute

Not involved None The parameter modification has no impact on the equipment. The support for different protocols is affected.

V100R001C01 Radio

Engineering Design Initial Value Setting Source Parent topic: PDCPROHCPara

DefDopplerLevel MO

INNERMEASSWITCH

Parameter ID

DefDopplerLevel

Parameter Name

DefDopplerLevel

NE MML Command

eNodeB MOD INNERMEASSWITCH LST INNERMEASSWITCH

Meaning

Indicates the default Doppler level. When the Doppler measurement switch is shut down, parameters are set based on the default Doppler level.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name

LOFD-00101502 Dynamic Scheduling

Value Type

Enumeration values

GUI Value Range CLASS_0(CLASS_0), CLASS_1(CLASS_1), CLASS_2(CLASS_2) Enumeration Number/Bit Unit

CLASS_0~0, CLASS_1~1, CLASS_2~2 None

Actual Value Range

CLASS_0, CLASS_1, CLASS_2

Default Value

CLASS_1(CLASS_1)

Recommended Value

CLASS_1(CLASS_1)

Impact Parameter Relationship Access

INNERMEASSWITCH None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

Not involved None The parameter modification has no impact on the equipment. Indicates the default Doppler level when the Doppler measurement switch is shut down. The Doppler level and other associated factors affect the CQI report mode and reported parameters, and therefore affect the feedback overhead on the uplink and throughput or coverage on the downlink. V100R001C01 Radio Default/Recommended

Parent topic: INNERMEASSWITCH

TtiBundlingSwitch MO

GlobalProcSwitch

Parameter ID

TtiBundlingSwitch

Parameter Name

TtiBundlingSwitch

NE MML Command

eNodeB LST GLOBALPROCSWITCH MOD GLOBALPROCSWITCH

Meaning

Indicates whether TTI bundling is enabled.

IsKey

NO

Mandatory

NO

Dynamic Attribute No Feature ID Feature Name Value Type

LOFD-001015 Enhanced Scheduling Enumeration values

GUI Value Range OFF(Off), ON(On) Enumeration Number/Bit Unit

OFF~0, ON~1 None

Actual Value Range

OFF, ON

Default Value

OFF(Off)

Recommended Value

OFF(Off)

Impact Parameter Relationship Access

GlobalProcSwitch None Read & Write

No (And no impact on the UE in idle mode) Service Interrupted After Modification Interruption Scope Not involved

Interruption Duration (min) Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

Not involved None The parameter modification has no impact on the equipment. If TTI bundling is enabled for the UE, you can configure TTI bundling through the UE to obtain more transmission chances within the delay budget on the VOIP air interface, improving uplink coverage. V100R001C01 Radio Engineering Design

Parent topic: GlobalProcSwitch

PdcchBndPcSw MO

CellDlpcPdcch

Parameter ID

PdcchBndPcSw

Parameter Name NE MML Command Meaning

PdcchBndPcSw eNodeB MOD CELLDLPCPDCCH Indicates the switch that is used to enable and disable power control applied to the PDCCH carrying dedicated control information. If this parameter is set to ON, the PDCCH power is adjusted dynamically when the channel quality is extremely good or bad.

IsKey

NO

Mandatory

NO

Dynamic Attribute

No

Feature ID Feature Name Value Type GUI Value Range Enumeration Number/Bit Unit Actual Value Range Default Value

LBFD-002016 Dynamic Downlink Power Allocation Enumeration values OFF, ON OFF~0, ON~1

None OFF, ON OFF

Recommended Value OFF Impact Parameter Relationship Access

CellDlpcPdcch None

Read & Write

Service Interrupted After Modification

No (And no impact on the UE in idle mode)

Interruption Scope

Not involved

Interruption Duration (min)

Not involved

Caution Validation of Modification

None The parameter modification has no impact on the equipment.

Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

None

V100R002C00

Radio Engineering Design

Parent topic: CellDlpcPdcch

Reference signal power MO Parameter ID Parameter Name NE MML Command Meaning

PDSCHCfg ReferenceSignalPwr

Reference signal power eNodeB MOD PDSCHCFG Indicates the reference signal power of the cell. For details, see 3GPP TS 36.213.

IsKey

NO

Mandatory

NO

Dynamic Attribute

No

Feature ID

LBFD-002003

LBFD-002009 LBFD-002016 Feature Name

Physical Channel Management Broadcast of system information Dynamic Downlink Power Allocation

Value Type GUI Value Range Enumeration Number/Bit Unit Actual Value Range Default Value

Interval values -600~500 Not involved

0.1dBm -600~500 182

Recommended Value No recommended value. This parameter must be set based on the power

specification of the RRU and the cell bandwidth. Impact Parameter Relationship Access

PDSCHCfg None

Read & Write

Service Interrupted After Modification

No (And no impact on the UE in idle mode)

Interruption Scope

Not involved

Interruption Duration (min)

Not involved

Caution Validation of Modification Impact on Radio Network Performance

None The parameter modification has no impact on the equipment.

1) Coverage: If the value of ReferenceSignalPwr is too large, crosscoverage occurs. This causes interference to other cells. If the value of ReferenceSignalPwr is too small, coverage holes appear. 2) Interference: The setting of ReferenceSignalPwr varies depending on the interference from neighboring cells. A large interference margin is required where the interference is strong. 3) Channel estimation: A larger value of ReferenceSignalPwr leads to higher channel estimation accuracy, a lower demodulation threshold, and higher receiver sensitivity, but it causes stronger interference to neighboring cells. 4) Capacity: A larger value of ReferenceSignalPwr brings better coverage, but a large value limits the power used for data transmission and hence decreases the system capacity. Set ReferenceSignalPwr appropriately to ensure a reasonable tradeoff between coverage and capacity, effective channel estimation, and appropriate interference control.

Introduced in Version... Attribute Initial Value Setting Source

V100R001C00

Radio Default/Recommended

Parent topic: PDSCHCfg

Qam64 enabled MO

PUSCHCfg

Parameter ID Parameter Name NE MML Command Meaning

Qam64Enabled

Qam64 enabled eNodeB MOD PUSCHCFG Indicates whether 64QAM of the PUSCH is enabled. For details, see 3GPP TS 36.211.

IsKey

NO

Mandatory

NO

Dynamic Attribute

No

Feature ID Feature Name Value Type GUI Value Range Enumeration Number/Bit Unit Actual Value Range Default Value

LOFD-001006 UL 64QAM Enumeration values BOOLEAN_FALSE(False), BOOLEAN_TRUE(True) BOOLEAN_FALSE~0, BOOLEAN_TRUE~1

None BOOLEAN_FALSE, BOOLEAN_TRUE BOOLEAN_TRUE(True)

Recommended Value No recommended value. The value should be set based on the 64QAM

capability of the UE. Impact

PUSCHCfg

Parameter Relationship Access

None

Read & Write

Service Interrupted After Modification

No (And no impact on the UE in idle mode)

Interruption Scope

Not involved

Interruption Duration (min)

Not involved

Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

None The parameter modification has no impact on the equipment.

None

V100R001C00

Radio Engineering Design

Parent topic: PUSCHCfg

UeTimerConst This chapter describes the parameters related to the UeTimerConst MO.  

Local cell identity Constant N310

    

Constant N311 Timer 300 Timer 301 Timer 310 Timer 311

Parent topic: Radio-tree

Intra-Frequency Mobility Load Balancing Threshold MO Parameter ID Parameter Name NE MML Command Meaning

CellMLB IntraFreqMlbThd

Intra-Frequency Mobility Load Balancing Threshold eNodeB MOD CELLMLB Indicates the threshold that is used to trigger the intra-frequency load balancing algorithm. When the cell load is equal to or lower than this threshold, the intra-frequency load balancing algorithm is triggered or stopped. This parameter is used with the load offset. That is, when the load is higher than the load threshold plus the load offset, the algorithm is triggered; when the load is lower than the load threshold, the algorithm is stopped.

IsKey

NO

Mandatory

NO

Dynamic Attribute

No

Feature ID

LBFD-001001 LOFD-001032

Feature Name

3GPP R8 Specifications Intra-LTE Load Balancing

Value Type GUI Value Range Enumeration Number/Bit Unit Actual Value Range Default Value

Interval values 1~100 Not involved

% 0.01~1 60

Recommended Value 60 Impact Parameter Relationship

Access

CellMLB The difference between the intra-frequency load balancing threshold and the load offset should be greater than the DL cell dual-band intelligent shutdown threshold. The sum of the intra-frequency load balancing threshold and the load offset should be less than the DL admission load threshold. The sum of the load balancing threshold and the load offset cannot be greater than 100. Read & Write

Service Interrupted After Modification

No (And no impact on the UE in idle mode)

Interruption Scope

Not involved

Interruption Duration (min)

Not involved

Caution Validation of

None The parameter modification has no impact on the equipment.

Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

This parameter value has an obvious impact on the use of the MLB algorithm. A greater parameter value may cause the MLB algorithm fail to take full effect when the cell is overload. A smaller parameter value may cause too much signaling interaction and too many handovers. V100R002C00

Radio Engineering Design

Parent topic: CellMLB

SMeasure MO

HoMeasComm

Parameter ID

SMeasure

Parameter Name

SMeasure

NE MML Command Meaning

eNodeB MOD HOMEASCOMM Indicates the measurement threshold. When the quality of the serving cell is higher than the threshold, the UE does not need to measure the intrafrequency, inter-frequency, and inter-RAT neighboring cells. Thus, the power consumption is reduced.

IsKey

NO

Mandatory

NO

Dynamic Attribute Feature ID

No LBFD-00201801 LBFD-00201802 LOFD-001019 LOFD-001020 LOFD-001021 LOFD-001022 LOFD-001022

Feature Name

Coverage Based Intra-frequency Handover Coverage Based Inter-frequency Handover PS Inter-RAT Mobility between E-UTRAN and UTRAN PS Inter-RAT Mobility between E-UTRAN and GERAN PS Inter-RAT Mobility between E-UTRAN and CDMA2000 SRVCC to UTRAN SRVCC to UMTS

Value Type GUI Value Range Enumeration Number/Bit Unit Actual Value Range Default Value

Interval values -141~-44 Not involved

dBm -141~-44 -44

Recommended Value -44 Impact Parameter Relationship Access

HoMeasComm None

Read & Write

Service Interrupted After Modification

No (And no impact on the UE in idle mode)

Interruption Scope

Not involved

Interruption Duration (min)

Not involved

Caution Validation of Modification Impact on Radio Network Performance Introduced in Version... Attribute Initial Value Setting Source

None The parameter modification has no impact on the equipment.

None

V100R001C00

Radio Default/Recommended

Parent topic: HoMeasComm

Root sequence index MO Parameter ID Parameter Name NE MML Command

Cell RootSequenceIdx

Root sequence index eNodeB ADD CELL MOD CELL

Meaning

Indicates the logical root sequence index, which is used to derive the preamble sequence. Each logical root sequence corresponds to a physical root sequence. For the mapping between logical root sequences and physical root sequences, see 3GPP TS 36.211.

IsKey

NO

Mandatory

YES

Dynamic Attribute Feature ID Feature Name Value Type GUI Value Range Enumeration Number/Bit

No LBFD-002010 Random Access Procedure Interval values 0~837 Not involved

Unit

None

Actual Value Range

0~837

Default Value

None

Recommended Value None Impact Parameter Relationship

Cell When the preamble format is 0, 1, 2, or 3 and HighSpeedFlag is HIGH_SPEED or SUPER_HIGH_SPEED, the relations between cell radius and root sequence index are as follows: 1) If 1 m