SingleRAN
LTE and NRFeature Intelligent Carrier Shutdown Parameter Description Issue
Draft A
Date
2020-12-29
HUAWEI TECHNOLOGIES CO., LTD.
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Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
Contents
Contents 1 Change History... History.............. ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................1 ........1 1.1 SRAN17.1 SRAN17.1 Draft A (2020-12-2 (2020-12-29)........ 9).................. ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ............. ... 1
2 About This This Document.. Document............. ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................4 ........4 2.1 General Statements..... Statements................ ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ................... ........ 4 2.2 Applicable Applicable RAT....... RAT.................. ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ............... ..... 4 2.3 Features in This Document... Document............. ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... .................. ........ 5
3 LTE and NR and NR Intelligent Carrier Shutdown......................................................................... 6 3.1 Principles.......... Principles..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ............. ... 6 3.1.1 Identif ying the Overlapping Overlapping Neighboring Cell............ Cell...................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ............7 .7 3.1.2 Entering Entering the Carrier Shutdown State....... State.................. ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .............. 8 3.1.3 Exiting Exiting the Carrier Shutdown State.............................................................................................................................10 3.2 Network
Analysis................... Analysis........ ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... .................. ....... 10
3.2.1 Benet Benetss.......... .................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ........... 11 3.2.2 Impacts..................................................................................................................................................................................11 Impacts..................................................................................................................................................................................11 3.3 Requirements......... Requirements................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... .............. ... 16 3.3.1 Licenses........... Licenses..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... .................... .......... 17 3.3.2 Software................................................................................................................................................................................17 Software................................................................................................................................................................................17 3.3.3 Hardware........... Hardware......................... ............................ ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ...................... ........ 18 3.3.4 Networking...... Networking................. ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... .................. ....... 19 3.3.5 Others............ Others.......................... ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ............................ ........................... ............. 19 3.4 Operation Operation and Maintenance.... Maintenance............... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............. 19 3.4.1 When to Use......... Use.................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ............. 19 3.4.2 Data Conguration onguration......... .................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... .................... .......... 20 3.4.2.1 Data Prepar Preparation........ ation................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ............. 20 3.4.2.2 Using MML Commands..... Commands................ ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 22 3.4.2.3 Using the MAE-Deploym MAE-Deployment......... ent.................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... .......... 23 3.4.3 Activation Activation Verication Verication........... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 23 3.4.4 Network Network
Monitoring.........................................................................................................................................................26
4 Param Parameters........ eters................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ................... ........ 28 5 Counters.................................................................................................................................. 29 6 Glossary................................................................................................................................... 30 Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
Contents
7 Reference Documents...........................................................................................................31
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
1 Change History
1
Change History
This chapter describes changes not included in the "Parameters", "Counters", "Glossary", and "Reference Documents" chapters. These changes include: ●
Technical ch changes Changes in functions and their corresponding parameters
●
Editorial changes Improvements Improve ments or revisions to the documentation
1.1 SRAN17.1 Draft A (2020-12-29) ( 2020-12-29) This issue introduces the following changes to SRAN16.1 03 (2020-08-31).
Technical Changes Change Description
Parameter Change
Base Station Model
Added support for intrasite SA networking scenarios. For details, see
None
● 3900 and 5900 series base stations
3L LTE TE and NR Intelligent Carrier Shutdown. Shutdown.
Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
● DBS3900 LampSite and DBS5900 LampSite
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
1 Change History
Change Description
Parameter Change
Base Station Model
Added parameters indicating the load thresholds for neighboring LTE cells. For
Added parameters:
● 3900 and 5900 series base stations
details, see 3 LTE and NR Intelligent Carrier Shutdown.. Shutdown
● NRDUCellPowerSaving.EutranDlPrbThld ing. EutranDlPrbThld ● NRDUCellPowerSaving.EutranDlPrbOfset ● NRDUCellPowerSaving.EutranCarrShutdownRa- ing. EutranCarrShutdownRa- tio
● DBS3900 LampSite and DBS5900 LampSite
● NRDUCellPowerSaving.EutranCarrShutdownEx- ing. EutranCarrShutdownEx- itOfs ● NRDUCellPowerSaving.EutranNrUserNumThl ing. EutranNrUserNumThl d d ● NRDUCellPowerSaving.EutranNrUserNumThl- ing. EutranNrUserNumThl- dOfs ● NRDUCellPowerSaving.EutranNrUserDlPrbThld ing. EutranNrUserDlPrbThld ● NRDUCellPowerSaving.EutranNrUserDlPrbThl- ing. EutranNrUserDlPrbThl- dOfs
Issue Draft A (2020-12-29)
Added a parameter indicating the penalty time for carrier shutdown. For details, see 3 LTE and NR Intelligent Carrier Shutdown.. Shutdown
Added the NRDUCellPowerSaving.CarrShutdownPenaltyTime ing. CarrShutdownPenaltyTime parameter.
Added support for manually conguring conguring the the period when the load of neighboring LTE cells for the NR cell is continuously checked to determine whether to enable the carrier shutdown. For details, see LTE and NR Intelligent 3 LTE Carrier Shutdown. Shutdown.
Added the NRDUCellPowerSaving..ShutdownTrigJudgePeriod ing parameter.
● 3900 and 5900 series base stations ● DBS3900 LampSite and DBS5900 LampSite
Copyright © Huawei Technologies Co., Ltd.
● 3900 and 5900 series base stations ● DBS3900 LampSite and DBS5900 LampSite
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
1 Change History
Change Description
Parameter Change
Base Station Model
Added support for manually conguring conguring the the neighbor relationships between LTE and NR cells
Modied the Modied the NrNRelationship.. AggregationA NrNRelationship AggregationA ttribute parameter parameter by adding the
● 3900 and 5900 series base stations
with CARRIER_SHUTDOWN_OVERL areas.overlapping For details,coverage see 3 AP_FLAG AP_FLAG option. option. LTE and NR Intelligent Carrier Shutdown. Shutdown. Added the counter measuring the number of power-saving-triggered blind redirections from NR to E-UTRAN. For details, see 3.2.2 Impacts Impacts..
None
Removed the impact relationship with LTE TDD
None
LampSite and DBS5900 LampSite ● 3900 and 5900 series base stations ● DBS3900 LampSite and DBS5900 LampSite ● 3900 and 5900 series base stations ● DBS3900 LampSite and DBS5900 LampSite
and NR dynamic spectrum sharing. For details, see 3.2.2 Impacts. Impacts.
Removed the mutually exclusive relationship between LTE and NR intelligent carrier shutdown and Hyper Cell. For details, see 3.3.2 Software.. Software
● DBS3900
None
● 3900 and 5900 series base stations ● DBS3900 LampSite and DBS5900 LampSite
Editorial Changes Revised descriptions in this document.
Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
2 About This Document
2
About This Document
2.1 General Statements Purpose Feature Parameter Description documents are intended to acquaint readers with: ●
The tech technic nical al princ principl iples es of featu feature ress and their their rela related ted p par arame ameter terss
●
The scenar scenarios ios where where these these featu features res ar are e used used,, the the benets benets they they provide, and the impact they have on networks and functions
●
Requireme Requirements nts of the the operat operating ing environmen environmentt that that must must be be met bef before ore feature feature activation
●
Parameter conguration conguration required required for feature activation, verication verication of of feature activation, and monitoring of feature performance NOT NO T
This document only provides p rovides guidance for feature activation. Feature deployment and feature gains depend on the specics specics of of the network scenario where the feature is deployed. To achieve the desired gains, contact co ntact Huawei professional service engineers.
Software Interfaces Any parameters, alarms, counters, or managed objects (MOs) described in Feature Parameter Description documents apply only to the corresponding software release. For future software releases, refer to the corresponding updated product documentation.
2.2 Applicable RAT This document applies to LTE FDD, LTE TDD, and NR. For denitions denitions of of base stations described in this document, see section "Base Station Products" in SRAN Networking and Evolution Overview . Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
2 About This Document
2.3 Features in This Document This document describes the following features.
Issue Draft A (2020-12-29)
Feature ID
Feature Name
Chapter/Section
MRFD-160263
LTE and NR Intelligent Carrier Shutdown (NR)
3 LTE and NR Intelligent Carrier Shutdown
MRFD-160223
LTE and NR Intelligent Carrier Shutdown (LTE FDD)
3 LTE and NR Intelligent Carrier Shutdown
MRFD-160233
LTE and NR Intelligent Carrier Shutdown (LTE TDD)
3 LTE and NR Intelligent Carrier Shutdown
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
3
LTE and NR Intelligent Carrier Shutdown
3.1 Principles NR cells in operation still consume energy when there is light or even no trac trac in in the area covered by both LTE LTE and NR networks. In this case, the LTE and NR intelligent carrier shutdown function migrates from NRRF cells to LTEfor cells and then shuts down NR carriers. If the power services amplier of amplier of the module the disabled carriers does not serve other working carriers, the power amplier amplier will will also be turned of to to reduce the overall energy consumption, as shown in Figure 3-1.. 3-1 Figure 3-1 Working 3-1 Working principles of LTE LTE and NR intelligent carrier shutdown
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
This function is enabled when both the following switches are turned on: ●
On the LTE side ide: the CellAlgoExtSwitch. CellAlgoExtSwitch.LnrSmartCarrierShutdownSw LnrSmartCarrierShutdownSw parameter
●
On the NR side: the LNR_SMART_CARRIER_SHUTDOWN_SW LNR_SMART_CARRIER_SHUTDOWN_SW option option of the NRDUCellAlgoSwitch.PowerSavingSwitch NRDUCellAlgoSwitch. PowerSavingSwitch parameter parameter
The efective efective period period of LTE and NR intelligent carrier shutdown is specied specied by by the parameters in the NRDUCellPowerSaving NRDUCellPowerSaving MO MO on the NR side. A unique efective period is determined by the NRDUCellPowerSaving NRDUCellPowerSaving..PowerSavingPolicyIndex and and NRDUCellPowerSaving..PowerSavingType parameters. NRDUCellPowerSaving parameters.
3.1.1 Identifying the Overlapping Neighboring Cell When LTE LTE and NR networks have overlapping coverage areas, the LTE cell serves as the coverage layer of the NR cell. The LTE and NR intelligent carrier shutdown function migrates services from the NR cell to the L LTE TE cell and shuts down the NR cell. In this case, the LTE LTE cell is the overlapping neighboring cell of the NR cell.
NSA/NSA and SA Hybrid Networking The overlapping neighboring cell can be identied identied in in either of the following ways: ●
Method 1: automatic identication identication by by the system No conguration conguration operation operation is required. You You are advised to use the system to automatically identifying the neighbor relationship between L LTE TE and NR cells with overlapping coverage areas.
●
Method 2: manual identication When conguring conguring a a neighbor relationship between the LTE an NR cells, select the CARRIER_SHUTDOWN_OVERLAP_FLAG CARRIER_SHUTDOWN_OVERLAP_FLAG option option of the NrNRelationship.. AggregationAttribute NrNRelationship AggregationAttribute parameter parameter on the LTE side to congure the congure the LTE cell as an overlapping neighboring cell of the target NR cell. When manually conguring conguring the the neighbor relationship between the LTE and NR cells on the LTE side, set this parameter as planned for all cells enabled with LTE LTE and NR intelligent carrier shutdown and deliver the parameter setting at the same time. NOT NO T
In NSA or NSA and SA hybrid networking, when an LTE cell is congured congured with with the indicator for a overlapping neighboring cell, the neighbor relationship with this cell cannot be removed by the inter-RAT ANR function on the LT LTE E side. IInstead, nstead, the neighbor relationship must be removed by running the RMV NRNRELATIONSHIP command NRNRELATIONSHIP command on the LTE side.
SA Networking When conguring conguring a a neighbor relationship between the LTE and NR cells, select the LNR_CARR_SHUTDOWN_OVERLAP_IND option LNR_CARR_SHUTDOWN_OVERLAP_IND option of the NRCellEutraNRelation..PowerSavingOverlapInd parameter NRCellEutraNRelation parameter on the NR side to congure the congure the LTE cell as an overlapping neighboring cell of the NR cell. c ell.
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
NOT NO T
● In SA SA netw network orking, ing, the aut automa omatic tic identication identication of of the overlapping neighboring cell by the system is implemented on the MAE-Optimization. For details, see the feature parameter description of the MAE-Optimization. ● In SA network networking, ing, whe when n an L LTE TE ce cell ll is congured congured with with the indicator for a overlapping neighboring cell, the neighbor relationship with this cell cannot be removed by the intra-gNodeB ANR function. Instead, the neighbor relationship must be removed by running the RMV NRCELLEUTRANRELATION command NRCELLEUTRANRELATION command on the NR side.
3.1.2 Entering the Carrier Shutdown State Turn on the switches on the LTE and NR sides. Figure 3-2 shows 3-2 shows the procedure for LTE and NR intelligent carrier shutdown. Figure 3-2 LTE 3-2 LTE and NR intelligent carrier shutdown procedure
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
1.
The gNodeB gNodeB checks whether whether the the current current time is is wi within thin the shutdown shutdown period, period, which is specied specied by by the NRDUCellPowerSaving. NRDUCellPowerSaving.StartTime StartTime and and NRDUCellPowerSaving.StopTime NRDUCellPowerSaving. StopTime parameters. parameters. If it is, the procedure goes to the next step. Otherwise, the checking process is repeated.
2.
The gNodeB gNodeB checks whether whether the the current current time is is wi within thin the penalty penalty period period specied by specied by the NRDUCellPowerSaving. NRDUCellPowerSaving.CarrShutdownPenaltyTime CarrShutdownPenaltyTime parameter.. If it is parameter i s not, the procedure goes to the next step. If it is, even when the preceding trigger condition is met, the carrier shutdown is not enabled and the checking process is repeated.
3.
The gNod gNodeB eB checks checks whet whether her the the NR cell cell alway alwayss meets meets th the e follow following ing conditions in the period specied specied by by the NRDUCellPowerSaving..ShutdownTrigJudgePeriod parameter: NRDUCellPowerSaving parameter: –
Avera Average ge numb number er of of active active UEs UEs in in th the e NR cell cell ≤ UE n numb umber er thre thresho shold ld (specied by (specied by the NRDUCellPowerSaving. NRDUCellPowerSaving.UserNumThld UserNumThld parameter) parameter)
–
Downli Downlink nk physic physical al rreso esour urce ce block block (PRB (PRB)) usa usage ge of the the NR cell cell ≤ Downli Downlink nk PRB usage threshold (specied (specied by by the NRDUCellPowerSaving. NRDUCellPowerSaving.DlPrbThld DlPrbThld parameter)
If these conditions are met, the procedure goes to the next step. Otherwise, the checking process is repeated. NOT NO T
● Activ Active e UEs are are U UEs Es in R RRC_CO RC_CONNECT NNECTED ED mode mode in an NR cell. cell. ● Downl Downlink ink PRB us usage age of an NR cell cell = Average Average number number of P PRBs RBs used used by PDSCH PDSCH DRB services/Average number of available PRBs in the downlink
4.
The eNodeB eNodeB sends sends the the follow following ing load load informati information on about about neighbo neighboring ring LTE LTE cells cells of the NR cell to the gNodeB. The gNodeB checks whether the load of any neighboring LTE LTE cell meets the following conditions in the period specied specied by by the NRDUCellPowerSaving NRDUCellPowerSaving..ShutdownTrigJudgePeriod parameter: parameter: –
Downli Downlink nk PRB PRB usage usage of the the neig neighbo hborin ring gL LTE TE cell cell < E-UTR E-UTRAN AN downl downlink ink PRB threshold (specied (specied by by the NRDUCellPowerSaving. NRDUCellPowerSaving.EutranDlPrbThld EutranDlPrbThld parameter)
–
Number Number of NR NR UEs UEs in the neighb neighbori oring ng LTE LTE cell cell < EE-UTR UTRAN AN NR NR user user number threshold (specied (specied by by the NRDUCellPowerSaving.EutranNrUserNumThld NRDUCellPowerSaving. EutranNrUserNumThld parameter) parameter)
–
Downli Downlink nk PRB PRB usag usage e of NR NR UEs UEs in the the neig neighbo hborin ring gL LTE TE cell cell < E-UT E-UTRAN RAN NR user downlink PRB threshold (specied (specied by by the NRDUCellPowerSaving.EutranNrUserDlPrbThld NRDUCellPowerSaving. EutranNrUserDlPrbThld parameter) parameter)
In addition, the eNodeB checks whether the proportion of neighboring LTE cells that meet the preceding conditions is i s greater than or equal to the EUTRAN carrier shutdown ratio specied specied by by the NRDUCellPowerSaving.EutranCarrShutdownRatio NRDUCellPowerSaving. EutranCarrShutdownRatio parameter. parameter. If these conditions are met, the procedure goes to the next step. Otherwise, the checking process is repeated.
Issue Draft A (2020-12-29)
5.
The gNodeB gNodeB sends system informatio information n to prohibit prohibit new UEs UEs fr from om accessin accessing g the NR cell.
6.
The gNodeB gNodeB checks whether whether there there are SA UEs UEs in the NR NR cell. cell. If ther there e are, are, the procedure goes to the next step. Otherwise, the procedure jumps to step 9.
7.
The gNodeB gNodeB performs perf orms inter-RAT inter-RAT handovers hando vers LTE cells cells for forcell. SA UEs. If a handover fails, the gNodeB redirects the SA to UELTE to an L LTE TE Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
8.
The gNodeB gNodeB checks whether whether there there are SA UEs UEs in the NR NR cell again. If there there are, the procedure goes to the next step. Otherwise, the procedure jumps to step 9.
9.
The NR NR carrier carrier is not not shut shut down down and and the cell cell enter enterss the pena penalty lty perio period d specied by specied by the NRDUCellPowerSaving. NRDUCellPowerSaving.CarrShutdownPenaltyTime CarrShutdownPenaltyTime parameter.. The gNodeB sends system information to allow new UEs to access parameter the NR cell.
10. The gNodeB gNodeB shuts shuts down the the carrier in the the NR cell and and blocks the the NR cell. The The NR cell enters the LTE and NR intelligent carrier shutdown state.
3.1.3 Exiting the Carrier Shutdown State After the cell enters the carrier shutdown state, the gNodeB checks whether either of the following conditions is met. If it is, the NR cell exits the carrier shutdown and is unblocked with the NR carrier enabled again. ●
The The shut shutdo down wn pe peri riod od elap elapse ses. s.
●
Proportion Proportion of neighb neighboring oring LTE cells cells that meet one of the the follow following ing conditions conditions ≥ E-UTRAN carrier shutdown ratio (specied (specied by by the NRDUCellPowerSaving.EutranCarrShutdownRatio NRDUCellPowerSaving. EutranCarrShutdownRatio parameter) parameter) – E-UTRAN carrier shutdown exit ofset ofset (specied (specied by by the NRDUCellPowerSaving.EutranCarrShutdownExitOfs parameter) NRDUCellPowerSaving.EutranCarrShutdownExitOfs parameter) – Downli Downlink nk PRB PRB usage usage of the the neig neighbo hborin ring gL LTE TE cell cell ≥ E-UTR E-UTRAN AN do downl wnlink ink PRB threshold (specied (specied by by the NRDUCellPowerSaving. NRDUCellPowerSaving.EutranDlPrbThld EutranDlPrbThld parameter) + E-UTRAN downlink PRB ofset ofset (specied (specied by by the NRDUCellPowerSaving.EutranDlPrbOfset parameter) –
Number Number of NR NR UEs UEs in the neighb neighbori oring ng LTE LTE cell cell ≥ EE-UTR UTRAN AN NR NR user user number threshold (specied (specied by by the NRDUCellPowerSaving.EutranNrUserNumThld NRDUCellPowerSaving. EutranNrUserNumThld parameter) parameter) + E-UTRAN NR user number threshold ofset ofset (specied (specied by by the NRDUCellPowerSaving.EutranNrUserNumThldOfs NRDUCellPowerSaving. EutranNrUserNumThldOfs parameter) parameter)
–
Downli Downlink nk PRB PRB usag usage e of NR NR UEs UEs in the the neig neighbo hborin ring gL LTE TE cell cell ≥ E-UT E-UTRAN RAN NR user downlink PRB threshold (specied (specied by by the NRDUCellPowerSaving.EutranNrUserDlPrbThld NRDUCellPowerSaving. EutranNrUserDlPrbThld parameter) parameter) + E-UTRAN NR user downlink PRB threshold ofset ofset (specied (specied by by the NRDUCellPowerSaving.EutranNrUserDlPrbThldOfs NRDUCellPowerSaving. EutranNrUserDlPrbThldOfs parameter) parameter)
If a cell remains in the carrier shutdown state for less than 15 minutes, the cell enters the penalty period specied specied by by the NRDUCellPowerSaving.CarrShutdownPenaltyTime NRDUCellPowerSaving. CarrShutdownPenaltyTime parameter parameter to prevent the ping-pong carrier shutdown. NOT NO T
● The number number of NR UEs iin n neighboring neighboring L LTE TE cells cells of the NR ce cell ll is measured measured by by checking checking the UE capability attribute (SA/NSA). ● In carrier carrier aggregatio aggregation n (CA) sce scenarios narios,, only UEs o on n the primary primary component component ca carrier rrier (PCC) (PCC) are counted.
3.2 Network Analysis Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
3.2.1 Benets In areas covered by both LTE LTE and NR networks, enabling LTE and NR intelligent carrier shutdown reduces the energy consumption of base stations when the network is under light or no load. However, However, the energy saving gains are less-thandesirable in the following scenarios: ●
Multipl Multiple e carrie carriers rs shar share e the same same PA PA of an RF modul module. e. The The PA PA can cannot not be be shut shut down if an NR carrier is shut down but the other carriers are still working.
●
An RF RF modul module e has has an an exce excessi ssivel vely y large large tem temper peratu ature re diferential diferential within within 24 hours before the start time of carrier shutdown. In this case, the RF module does not enter the carrier shutdown state. This is because hardware faults may occur if the temperature diferential diferential is is excessively large before and after the RF module enters the carrier shutdown state.
3.2.2 Impacts Network Impacts ●
QoS of a single UE UEs in a to-be-shutdown NR cell will be migrated to neighboring LTE cells in the overlapping overlapping coverage coverage areas. Due to less service processing capability in the neighboring LTE LTE cells, the peak rate of a single UE will decrease.
●
Number Number of int inter er-RA -RAT T hando handover verss and and cell cell rrese eselec lectio tions ns This function triggers the following interoperability procedures between networks of diferent diferent RATs: RATs:
●
–
When When an NR NR cell cell enter enterss the the LTE LTE and and NR NR intel intellig ligent ent carr carrier ier shutdo shutdown wn state, the number of inter-RAT handovers or cell reselections to LTE LTE cells by multimode UEs increases.
–
After After th the e NR cell cell exits exits the the LTE LTE and and NR intell intellige igent nt car carrie rierr shutdo shutdown wn state state,, the number of inter-RAT handovers or cell reselections to the NR cell c ell by multimode UEs increases.
Perfo Performa rmance nce counte counters rs in in NSA, NSA, or or NSA NSA and and SA hybrid hybrid network networking ing Table 3-1 3-1 describes describes the impacts on counters on the LTE side. Table 3-1 Impacts 3-1 Impacts on counters on the LTE LTE side
Issue Draft A (2020-12-29)
Counter Name
Impact
L.Trafc.User.NsaDc.PCell.A vg
The value of this counter may decrease when an NR cell enters the LTE and NR intelligent carrier shutdown state.
L.NsaDc.SgNB.Add.Att
The value of this counter may decrease when an NR cell enters the LTE and NR intelligent carrier shutdown state.
L.NsaDc.SgNB.Add.Succ
The value of this counter may decrease when an NR cell enters the LTE and NR intelligent carrier shutdown state.
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Counter Name
Impact
L.NsaDc.ScgFailure
The value of this counter may increase when an NR cell enters the LTE and NR intelligent carrier shutdown state.
L.NsaDc.SgNB.Rmv.Att
The value of this counter may increase, as UEs are released when an NR cell enters the LTE and NR intelligent carrier shutdown state.
L.NsaDc.E-RAB.Mod.Ind.Att
In Option 3x architecture, the value of this counter may increase because the E-RAB modication procedure modication procedure is initiated when an NR cell enters the LTE LTE and NR intelligent carrier shutdown state.
L.NsaDc.ERAB.Mod.Ind.Succ
In Option 3x architecture, the value of this counter may increase because the E-RAB modication procedure modication procedure is initiated when an NR cell enters the LTE LTE and NR intelligent carrier shutdown state.
3-2 describes the impacts on counters on the NR side when there are Table 3-2 describes SA UEs in NSA and SA hybrid networking. Table 3-2 Impacts 3-2 Impacts on counters on the NR side Counter Name
Impact
L.RA.GrpA.Att
The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells.
L.RA.GrpB.Att
The value of this counter may increase when SA UEs are blindly redirected to neighboring
N.RRCRedirection.N2E.Blin d N.RRCRedirection.N2E.Blin d.PowerSaving
LTE cells. The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells. The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells for power saving.
●
Perf Perfor orma manc nce e ccou ount nter erss in SA ne netw twor orki king ng –
Issue Draft A (2020-12-29)
When When NR carrier carrierss are are shut shut down down,, SA UEs UEs ((if if any) any) will will be be hande handed d over over to to LTE cells. The following table lists afected afected counters. counters.
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Counter Name
Impact
L.IRATHO.N2E.PrepAttIn
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
L.IRATHO.N2E.PrepInSucc
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
L.IRATHO.N2E.ExecSuccIn
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
N.HO.InterRAT.N2E.PrepA ttOut
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
N.HO.InterRAT.N2E.ExecA ttOut
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
N.HO.InterRAT.N2E.ExecS uccOut
The value of this counter may increase when SA UEs are handed over to neighboring LTE cells.
–
If handov handovers ers fail, SA UEs UEs are are blindly blindly redirected redirected to LTE LTE cells. cells. The followin following g table lists afected afected counters. counters. Counter Name
Impact
L.RA.GrpA.Att
The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells.
L.RA.GrpB.Att
The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells.
N.RRCRedirection.N2E.Bli nd
The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells.
N.RRCRedirection.N2E.Bli nd.PowerSaving
The value of this counter may increase when SA UEs are blindly redirected to neighboring LTE cells for power saving.
●
Issue Draft A (2020-12-29)
This This functio function n sav saves es ener energy gy by shut shuttin ting g dow down n downli downlink nk carri carriers ers inste instead ad of deactivating the cell. Therefore, when carriers are shut down, the counters and KPIs listed in Table 3-3 will 3-3 will still be measured without afecting afecting energy energy saving efects.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Table 3-3 Related 3-3 Related performance counters and KPIs Function Subset
Counter/KPI
PRB Measurement
● Counters related to the number of used PRBs
DU Cell Operator PRB Measurement
● Counte Counters rs rela related ted to to the number number o of f available PRBs ● Counte Counters rs rela related ted to to the number number o of f physical downlink control channel (PDCCH) control channel elements (CCEs) ● Counte Counters rs rela related ted to to the number number o of f PDCCH resource allocations ● PRB usage
DU Cell Algorithm Measurement
● Counte Counters rs relat related ed to the the total total numbe numberr of physical uplink shared channel (PUSCH) transmission time intervals (TTIs) ● Counte Counters rs relat related ed to the the total total numbe numberr of PDSCH TTIs
DU Cell SI Message Measurement
Number of SI transmissions
Channel Quality Measurement
● Counte Counters rs relat related ed to interf interfer erenc ence e and noise received in the uplink
DU Cell TRP Channel Quality Measurement Uplink Interference Measurement on PRB 0 to PRB 99 Uplink Interference Measurement on PRB 100 to PRB 199 Uplink Interference Measurement on PRB 200 to PRB 272
● Counte Counters rs relat related ed to uplin uplink k receiv received ed signal strength indicator (RSSI) ● Counters Counters related related to uplink uplink and and downlin downlink k power ● Counte Counters rs rela related ted to to the avera average ge interference and noise detected on a single PRB ● Counte Counters rs rela related ted to to the maximu maximum m interference and noise detected on a single PRB
In the case of false physical random access channel (PRACH) detection where the base station mistakenly regards interference interference or noise as UEs' random access preambles, the following counters and KPIs are still measured:
Issue Draft A (2020-12-29)
–
Counte Counters rs rela related ted to the the numbe numberr of rand random om pream preamble ble recep receptio tions ns
–
Counte Counters rs rela related ted to the the numbe numberr of rand random om pream preamble ble respo response nsess
–
Counte Counters rs rela related ted to the the numbe numberr of UEs UEs ssche chedul duled ed in the uplink uplink and and downlink in a cell
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
–
Counte Counters rs re relat lated ed to upli uplink nk data data tr trans ansmis missio sion nd dur uratio ation n
–
Counte Counters rs rela related ted tto o the numb number er of tra transp nsport ort bloc blocks ks (TBs) (TBs) used used for for uplin uplink k data transmission
–
Counte Counters rs rela related ted to modu modulat lation ion and coding coding scheme scheme (MC (MCS) S) iinde ndexx distribution for scheduling on the PUSCH
–
Counte Counters rs rela related ted tto o the numb number er of RBs RBs us used ed ffor or sched scheduli uling ng on on the PUSC PUSCH H
–
PUSCH RB usage
Function Impacts RA T
Function Func tion Name Name
Function Function Switch
Reference
Description
SRA N
RF module deep dormancy
RRU.DORMANC RF Module Deep RF module deep RRU.DORMANC YSW Dormancy dormancy takes precedence over LTE and NR intelligent carrier shutdown when the functions are both enabled.
NR
Cell load simulation
STR NRDUCELLSIM ULATELOAD
None
After LTE and NR intelligent carrier shutdown takes efect, efect, the the cell load simulation function cannot be enabled and will be disabled if it has been enabled. It is not recommended that these functions be both enabled.
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
RA T
Function Func tion Name Name
Function Function Switch
NR
CMAS
gNBSibCong..Si CMAS in gNBSibCong in 5G bType set set to RAN Feature SIB_TYPE_8 Documentation
Reference
Description When an NR carrier is shut down, the NR cell is blocked and commercial mobile alert system (CMAS) messages cannot be properly sent in this cell. But UEs can receive CMAS messages from other carriers.
NR
RF channel intelligent shutdown
RF_SHUTDOWN _SW option _SW option of the
Energy Conservation and Emission
in in 5G NRDUCellAlgoS RAN Feature witch.PowerSav witch. PowerSav Reduction Documentation ingSwitch parameter
When LTE and NR intelligent carrier shutdown is enabled, RF channel intelligent shutdown cannot take efect for efect for some low-frequency NR TDD AAUs/ RRUs in automatic coverage compensation mode. For details, see Energy Conservation and Emission Reduction in in 5G RAN Feature Documentation .
3.3 Requirem Requirements ents
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
3.3.1 Licenses RAT
Feature ID
Feature Name
Model
NE
Sales Unit
NR
MRFD-16026 3
LTE and NR
NR0S0LNICS0 0
gNodeB
Per Cell
Intelligent Carrier Shutdown (NR) LTE TDD
MRFD-16023 3
LTE and NR Intelligent Carrier Shutdown (LTE TDD)
LT4SLNRCSTD D
eNodeB
Per Cell
LTE FDD
MRFD-16022 3
LTE and NR
LT1S0LNICS00
eNodeB
Per Cell
Intelligent Carrier Shutdown (L (LTE TE FDD) FD D)
3.3.2 Software Before activating this function, ensure that its prerequisite functions have been activated and mutually exclusive functions have been deactivated. For detailed operations, see the relevant feature documents.
Prerequisite Prerequisit e Functions ●
Issue Draft A (2020-12-29)
NSA NSA or or NSA NSA and and S SA A hyb hybri rid d net netwo work rkin ing g
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Functi nctio on Name
Functi nctio on Switch
Reference nce
Descr criipt ptiion
NSA networking based on EPC
NSA Networking LTE: NSA_DC_CAPABI based on EPC LITY_SWITCH option of the NsaDcMgmtConf
For each NR cell, the NSA_DC_CAPAB ILITY_SWITCH option of the
ig. ig.NsaDcAlgoSwi tch parameter parameter
NsaDcMgmtCo ng..NsaDcAlgo ng Switch parameter must be selected for at least one cocoverage neighboring LTE cell.
●
SA networking None
Mutually Exclusive Functions Function Name Timing carrier shutdown
Functio tion Switch TIMING_CARRIER _SHUTDOWN_S W option of the NRDUCellAlgoSw itch.PowerSaving itch. PowerSaving Switch parameter parameter
Reference
Description
Energy Conservation and Emission Reduction in in 5G RAN Feature Documentation
The timing carrier shutdown period cannot overlap that of this function. You are advised to preferentially prefer entially plan the period during which timing carrier shutdown takes efect.
3.3.3 Hardware Base Station Models ●
●
Issue Draft A (2020-12-29)
LTE: –
3900 3900 and and 590 5900 0 sser erie iess bas base e sta stati tion onss
–
DBS3 DBS390 900 0 Lamp LampSi Site te and and DBS DBS59 5900 00 Lam LampS pSit ite e
NR : –
3900 and 5900 series series base base stati stations ons.. 3900 3900 serie seriess base base stat station ionss must must b be e congured with congured with the BBU3910.
–
DBS3900 DBS3900 LampSi LampSite te a and nd DBS5 DBS5900 900 Lamp LampSit Site. e. DBS3 DBS3900 900 Lamp LampSit Site e must must be be congured with the BBU3910. congured with Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Boards ●
●
LTE: –
The UMPT UMPTb, b, UMPT UMPTe, e, UMPT UMPTga, ga, and UMPT UMPTg board boardss are are the the only only main main control boards that support this function.
–
All All UBB UBBP P boa board rdss ssup uppo port rt th this is func functio tion. n.
NR : All NR-capable main control boards and NR TDD-capable TDD- capable baseband processing units support this function. To learn which main control boards are NR-capable and baseband processing units are NR TDD-capable, see the related BBU technical specications specications in in 3900 & 5900 Series Base Station Product Documentation .
RF Modules All low-frequency RF modules support this function. ●
For detail detailss abo about ut low-f low-fre reque quency ncy remo remote te radi radio o units units (RRU (RRUs), s), ssee ee RRU Technical Specifcations in in 3900 & 5900 Series Base Station Product Documentation .
●
For detail detailss abo about ut low-f low-fre reque quency ncy activ active e antenn antenna a uni units ts (AAUs (AAUs), ), se see e AAU Technical Specifcations in in 3900 & 5900 Series Base Station Product Documentation .
3.3.4 Networking ●
In NSA NSA and and SA hybr hybrid id ne netw twor orki king ng,, the the conguration conguration and and activation procedure of this function are the same as those in NSA networking. The load information is transmitted between the eNodeB and gNodeB over the X2 interface.
●
In SA SA networkin networking, g, this this functio function n applies applies only to LTE LTE and and NR NR co-site co-site scena scenarios. rios.
3.3.5 Others ●
The The UE has has subs subscri cribe bed d to LTE and and NR NR serv service ices. s.
●
This This fun functi ction on req requi uire ress that that UEs UEs sup suppo port rt N NSA SA DC DC dened dened in in 3GPP Release 15 in NSA networking or NSA and SA hybrid networking.
3.4 Operation and Maintenance 3.4.1 When to Use To achieve satisfactory energy-saving gains without impacti impacting ng network performance, LTE LTE and NR intelligent carrier shutdown is recommended in the following scenarios: ●
LTE and and NR cells overlap overlap in their coverage coverage areas, areas, and and the the LTE LTE network network provides continuous basic coverage. –
In SA SA networ networkin king, g, o orr NSA NSA and and SA hybrid hybrid networ networkin king, g, tthe he neig neighbo hborr relationships with LTE LTE cells must be congured congured for for the NR cell on the gNodeB. In NSA and SA hybrid networking, the neighbor relationship
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
with the NR cell also needs to be congured congured for for the LTE cells on the eNodeB. NOT NO T
In multi-operator sharing scenarios, the neighboring LTE cells of the NR cell congured on congured on the gNodeB must be the cells of the LTE LTE primary operator.
–
To query query the cove covera rage ge rela relation tionshi ship p between between LTE LTE an and d NR cells, cells, you you can can run the LST NRNRELATIONSHIP command NRNRELATIONSHIP command on the eNodeB in NSA networking or NSA and SA hybrid networking, or run the LST NRCELLEUTRANRELATION command NRCELLEUTRANRELATION command on the gNodeB in SA networking or NSA and SA hybrid networking.
●
The trac trac volume volume presents a typical tidal efect efect in in some areas such as central business districts (CBDs) and shopping malls.
●
The overall trac trac volume volume of LTE and NR services is low, as is often the case in suburban and rural areas.
In overlapping coverage areas, if multiple neighboring LTE LTE cells of the NR cell for which LTE LTE and NR intelligent carrier shutdown is to be enabled are anchor cells: ●
When When no ancho anchorr cells cells has has a small small bandwi bandwidth dth,, it is recom recommen mended ded that that LTE LTE and and NR intelligent carrier shutdown be enabled for all anchor cells.
●
When there there are are anchor anchor cells with small bandwidths bandwidths,, LTE LTE and and NR NR intellig intelligent ent carrier shutdown is not recommended for these small-bandwidth anchor cells.
●
When When all ancho anchorr cells cells hav have e small small bandwi bandwidth dthss and LTE LTE and and NR intel intellig ligent ent carrier shutdown must be enabled, it is recommended that the UE number threshold (indicated by the NRDUCellPowerSaving NRDUCellPowerSaving..UserNumThld parameter) and downlink PRB usage threshold (indicated by the NRDUCellPowerSaving..DlPrbThld parameter) NRDUCellPowerSaving parameter) of the NR cell be set to smaller values, and the PRB usage threshold ofset ofset (indicated (indicated by the NRDUCellPowerSaving..EutranDlPrbOfset parameter) of the anchor cells be NRDUCellPowerSaving set to a larger value. In this way, ping-pong migration can be avoided.
This function is not recommended in the following scenario: There are NR-only UEs. After the NR network is shut down, NR-only UEs cannot access services.
3.4.2 Data Conguration 3.4.2.1 Data Preparation Table 3-4 Parameters 3-4 Parameters used for conguration conguration on on the LTE side
Issue Draft A (2020-12-29)
Parameter Name
Parameter ID
Setting Notes
LNR Intelligent Carrier Shutdown Switch
CellAlgoExtSwitch.Ln CellAlgoExtSwitch.Ln rSmartCarrierShut- downSw
Set this parameter to ON ON..
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
Parameter Name
3 LTE and NR Intelligent Carrier Shutdown
Parameter ID
Aggregation Attribute NrNRelationship NrNRelationship.. Agg Agg regationAttribute
Setting Notes Set the CARRIER_SHUTDOWN_OVER LAP_FLAG option LAP_FLAG option of this parameter to the recommended value.
Table 3-5 Parameters 3-5 Parameters used for conguration conguration on on the NR side Parameter Name
Setting Notes
Power Saving Switch NRDUCellAlgoSwitch .PowerSavingSwitch
Select the LNR_SMART_CARRIER_SHUT DOWN_SW option DOWN_SW option of this parameter.
Start Time
NRDUCellPowerSaving.StartTime ing. StartTime
Set this parameter based on the network plan.
Stop Time
NRDUCellPowerSav-
Set this parameter based on
ing.StopTime ing. StopTime
the network plan.
Power Saving Type
Issue Draft A (2020-12-29)
Parameter ID
NRDUCellPowerSavSet this parameter to ing.PowerSavingType ing. PowerSavingType LNR_SMART_CARRIER_SHUT DOWN.. DOWN
UE Number Threshold NRDUCellPowerSaving.UserNumThld ing. UserNumThld
Set this parameter based on the network plan.
Downlink PRB Threshold
NRDUCellPowerSaving.DlPrbThld ing. DlPrbThld
Set this parameter based on the network plan.
E-UTRAN Downlink PRB Threshold
NRDUCellPowerSaving.EutranDlPrbThld ing. EutranDlPrbThld
Set this parameter based on the network plan.
E-UTRAN Downlink
NRDUCellPowerSav-
Set this parameter based on
PRB Ofset
t
ing.EutranDlPrbOfse
the network plan.
E-UTRAN Carrier Shutdown Ratio
NRDUCellPowerSaving.EutranCarrShutd ing. EutranCarrShutd ownRatio
Set this parameter based on the network plan.
E-UTRAN Carrier Shutdown Ofset
NRDUCellPowerSaving.EutranCarrShutd ing. EutranCarrShutd ownExitOfs
Set this parameter based on the network plan.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Parameter Name
Parameter ID
Setting Notes
E-UTRAN NR User Number Threshold
NRDUCellPowerSaving.EutranNrUserNu ing. EutranNrUserNu mThld
Set this parameter based on the network plan. If this parameter is set to 65535 65535,, this parameter and the NRDUCellPowerSaving.EutranNrUserDlPrbThld ing.EutranNrUserDlPrbThld parameter are invalid.
E-UTRAN NR User Number Threshold Ofset
NRDUCellPowerSaving.EutranNrUserNu ing. EutranNrUserNu mThldOfs
Set this parameter based on the network plan.
E-UTRAN NR User Downlink PRB Threshold
NRDUCellPowerSaving.EutranNrUserDlP ing. EutranNrUserDlP rbThld
Set this parameter based on the network plan. If this parameter is set to 255 255,, this parameter and the NRDUCellPowerSaving.EutranNrUserNumThld ing. EutranNrUserNumThld parameter are invalid.
E-UTRAN NR User Downlink PRB Threshold Ofset
NRDUCellPowerSaving.EutranNrUserDlP ing. EutranNrUserDlP rbThldOfs
Set this parameter based on the network plan.
Carrier Shutdown Penalty Time
NRDUCellPowerSaving.CarrShutdownPe ing. CarrShutdownPe naltyTime
Set this parameter based on the network plan.
Shutdown Trigger Judge Period
NRDUCellPowerSaving..ShutdownTrigJud ing gePeriod
Set this parameter based on the network plan.
Power Saving Overlapping Indicator
NRCellEutraNRelaCongure the Congure the tion.PowerSavingOve tion. PowerSavingOve LNR_CARR_SHUTDOWN_OVE rlapInd RLAP_IND option RLAP_IND option based on the network plan. This parameter is mandatory only in SA networking.
3.4.2.2 Using MML Commands Activation Command Examples //On the LTE side: MOD CELLALGOE CELLALGOEXTSWITCH: XTSWITCH: LocalCellId=0, LnrSmartCarrierSh LnrSmartCarrierShutdownSw=ON; utdownSw=ON; //(Optional, required only when the neighbor relationship between LTE and NR cells with overlapping coverage areas needs to be manually congured congured in in NSA or NSA and SA hybrid networking) Conguring Conguring all all overlapping neighboring cell in the overlapping coverage areas with the parameters set as follows: mobile country code (MCC) is 460, mobile network code (MNC) is 01, and gNodeB ID is 441233. MOD NRNRELATIONSHIP: LocalCellId=0, Mcc="460", Mnc="01", GnodebId=441233, CellId=100, AggregationAttribute=CARRIER_SHUTDOWN_O AggregationAttribu te=CARRIER_SHUTDOWN_OVERLAP_FLAG-1; VERLAP_FLAG-1; //On the NR side: //Turning //Turni ng on the switch for LTE and NR intelligent carrier shutdown MOD NRDUCELLALG NRDUCELLALGOSWITCH: OSWITCH: NrDuCellId=0,
Issue Draft A (2020-12-29)
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
PowerSavingSwitch=LNR_SMART_CARR PowerSavingSw itch=LNR_SMART_CARRIER_SHUTDOWN_SW IER_SHUTDOWN_SW-1; -1; //(Optional, required only in SA networking) Conguring Conguring all all neighboring cells in the overlapping coverage area with the parameters set as follows: MCC is 460, MNC is 01, and eNodeB ID is 441282. MOD NRCELLEUTRANRELATION: NrCellId=0, Mcc="460", Mnc="01", EnodebId=441282, CellId=111, PowerSavingOverlapInd=LNR_CARR_SHUTDOWN_OVERLAP_IND-1; //Adding power saving congurations ADD NRDUCELLPOWERSAVING: NRDUCELLPOWERSAVING: NrDuCellId=0, PowerSavingPol PowerSavingPolicyIndex=0, icyIndex=0, StartTime=00&00&00, StopTime=06&00&00, PowerSavingT PowerSavingType=LNR_SMART_CARRIER ype=LNR_SMART_CARRIER_SHUTDOWN, _SHUTDOWN, DlPrbThld=5, UserNumThld=20, CarrShutdownPenaltyTime=30, CarrShutdownPenaltyTime=30, EutranDlPrbThld=30, EutranDlPrbThld=30, EutranDlPrbOfset=30, EutranDlPrbOfset=30, EutranCarrShutdownRatio=90, EutranCarrS hutdownRatio=90, EutranCarr EutranCarrShutdownExitOfs=7 ShutdownExitOfs=70, 0, EutranNrUserNumThld=10, EutranNrUserNumThld=10, EutranNrUserNumThldOfs=20, EutranNrU serNumThldOfs=20, EutranNrUserDlPrbThld=10, EutranNrUserDlPrbThld=10, EutranNrUserDlPrbThldOfs=5, EutranNrUserDlPrbThldOfs=5, CarrShutdownPenaltyTime=30, CarrShutdownPena ltyTime=30, ShutdownTrigJudgePeriod=1; ShutdownTrigJudgePeriod=1;
Deactivation Command Examples //On the LTE side: MOD CELLALGOE CELLALGOEXTSWITCH: XTSWITCH: LocalCellId=0, LnrSmartCarrierSh LnrSmartCarrierShutdownSw=OFF; utdownSw=OFF; //(Optional, required only when the neighbor relationship between LTE and NR cells with overlapping coverage areas needs to be manually congured congured in in NSA or NSA and SA hybrid networking) Removing the neighbor relationship for energy saving in the overlapping coverage area MOD NRNRELATIONSHIP: LocalCellId=0, Mcc="460", Mnc="01", GnodebId=441233, CellId=XXX, AggregationAttribute=CARRIER_SHUTDOWN_O AggregationAttribu te=CARRIER_SHUTDOWN_OVERLAP_FLAG-0; VERLAP_FLAG-0; //On the NR side: //Turning of the the switch for LTE LTE and NR intelligent carrier shutdown MOD NRDUCELLALG NRDUCELLALGOSWITCH: OSWITCH: NrDuCellId=0, PowerSavingSwitch=LNR_SMART_CARRIE PowerSavingSw itch=LNR_SMART_CARRIER_SHUTDOWN_SW R_SHUTDOWN_SW-0; -0; //(Optional, required only in SA networking) Removing all neighbor relationships for energy saving in the overlapping coverage area MOD NRCELLEUTRANRELATION: NrCellId=0, Mcc="460", Mnc="01", EnodebId=441282, CellId=111, PowerSavingOverlapInd=LNR_CARR_SHUTDOWN_OVERLAP_IND-0; //Removing power saving congurations RMV NRDUCELLPOWERSAVING: NRDUCELLPOWERSAVING: NrDuCellId=0, PowerSavingPolicyIndex=0; PowerSavingPolicyIndex=0;
3.4.2.3 Using the MAE-Deployment For detailed operations, see Feature Conguration Conguration Using Using the MAE-Deployment.
3.4.3 Activation Verication Using MML Commands Use either of the following methods to verify that LTE and NR intelligent carrier shutdown has taken efect efect in in an NR cell. ●
●
Method 1 a.
Run the DSP NRDUCELL command NRDUCELL command on the gNodeB side during a shutdown period.
b.
Quer Query y the the cell cell sta statu tus. s. IIff the the valu value e of the the Power Saving State parameter State parameter is LNR Intelligent Carrier Shutdown:Enabled, Shutdown:Enabled, the cell has been shut down and this function has taken efect.
Method 2 Run the DSP NRDUCELLPOWERSAVING command NRDUCELLPOWERSAVING command to query the status of LTE LTE and NR intelligent carrier shutdown.
Issue Draft A (2020-12-29)
–
If the value of the Power Saving Type parameter Type parameter is LNR Intelligent Carrier Shutdown and Shutdown and the value of the Current State parameter State parameter is Enabled,, LTE and NR intelligent carrier shutdown has taken efect. Enabled
–
If the value of the Power Saving Type parameter Type parameter is LNR Intelligent Carrier Shutdown and Shutdown and the value of the Current State parameter State parameter is Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Disabled, LTE and NR intelligent carrier shutdown has not taken efect Disabled, and the reason needs to be further determined. For details about the possible reasons, see Table 3-6. 3-6. Table 3-6 Possible 3-6 Possible reasons why the LTE and NR intelligent carrier shutdown function does not take efect Cause Insucient L Insucient Liicense
Description The license item has not been applied for.
Switch Turned Of
The function switch for the NR cell has not been turned on.
Neighboring Cell Not Congured
The neighbor relationships with LTE cells are not congured congured for for the NR cell, the overlap indication is not congured congured for for the neighboring LTE cells of the NR cell, the X2 interface is faulty, or the NR cell fails to obtain information about its neighboring LTE cells.
Cell Unavailable
The NR cell is blocked or deactivated, fails to be set up, or is unavailable due to other reasons.
Triggering Ti Time Not Re Reached
● The cu current ttiime is is no not wi within the time range specied specied for for the function. ● If the the trigge triggerr condit condition ionss are are sti still ll not met when the congured shutdown stop time is about to elapse within 20 minutes, then the shutdown process cannot be started during the remaining period even with the trigger conditions satised.
Issue Draft A (2020-12-29)
Neighboring Ce Cell Un Unavailable
The ffu unct ctiion sw swit itcch of of th the neighboring LTE LTE cell is not turned on, the licenses for the neighboring LTE cell are insucient, the insucient, the neighboring LTE cell is in barred state or not activated, or no neighboring LTE LTE cell is anchor cell.
Impacted Feature Taken Efect
None
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Cause
Description
Downlink PRB Threshold Not Reached
The user number in the NR cell has reached the trigger threshold, but the downlink PRB usage has not reached the trigger threshold.
UE Number Threshold Not Reached
● NR Thecell downli dow nlink nk PRB usage usa getrigger in the the has reached the threshold, but the user number has not reached the trigger threshold. ● Neit Neithe herr the the down downli link nk PRB PRB usage nor the user number in the NR cell has reached the trigger threshold.
Issue Draft A (2020-12-29)
Neighboring Cell Load Exceeding Threshold
The load in all the neighboring LTE cells of the NR cell exceeds the threshold.
Triggering Decision Period Not
The current time is within the
Met
check period,triggering but the thresholds for function have not been met.
In Penalty State
If this function is in efect efect for for a consecutive period of less than 15 minutes for one time, a penalty is imposed and this function cannot take efect efect again again until the penalty time elapses. The penalty time is specied by specied by the NRDUCellPowerSaving.CarrShutdownPenaltyTime ing. CarrShutdownPenaltyTime parameter.
RF Hardware Capability Not Supported
None
BBP Software Capability Not Supported
None
UE Being Transferred or Transfer Failed
Online SA UEs in the NR cell fail to be handed over or redirected.
NR UEs in NCell Exceeding Threshold
The number of NR UEs in a neighboring LTE LTE cell of the NR cell exceeds the threshold.
NR UE Load in NCell Exceeding Threshold
The load of NR UEs in a neighboring LTE LTE cell of the NR cell exceeds the PRB usage threshold.
Copyright © Huawei Technologies Co., Ltd.
25
SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
3 LTE and NR Intelligent Carrier Shutdown
Cause
Description
Others
● The current time is within the time range specied specied for for the LTE and NR intelligent carrier shutdown function, but this function is in its detection period. ● Intern Internal al softwa software re or other other reasons cause the function not to take efect.
Observing Counters Observe the performance counter of the afected afected NR NR cell. Counter Name
Counter Description
N.Cell.Unavail.Dur.EnergySavi ng
Duration of cell unavailability due to energy saving
Observe the performance counters of the afected afected gNodeB. gNodeB. Counter Name
Counter Description
VS.EnergyCons.BTS.Adding.N R
The sum of power consumption of all boards in NR
VS.EnergyCons.BTSBoard
Power consumption of board
Observe the performance counter of the afected afected eNodeB. eNodeB. Counter Name VS.EnergyCons.BTS.Adding.LT VS.EnergyCons.BTS.Adding.LT E
Counter Description The sum of power consumption of all boards in the LTE
3.4.4 Network Monitoring NR counters: ●
gNod gNodeB eB po powe werr con conssumpt umptio ion n Check the VS.EnergyCons.BTSBoard the VS.EnergyCons.BTSBoard counter counter to see the power consumption of RF modules. Check the VS.EnergyCons.BTS.Adding.NR the VS.EnergyCons.BTS.Adding.NR counter counter to see the power consumption of the entire base station.
Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
●
3 LTE and NR Intelligent Carrier Shutdown
Duratio Duration n of of cell cell una unavai vailab labilit ility yd due ue to energ energy y savi saving ng Check the N.Cell.Unavail.Dur.EnergySaving N.Cell.Unavail.Dur.EnergySaving counter counter to see this duration. There is delay in making decisions on whether to enter or exit the LTE LTE and NR intelligent carrier shutdown state. Therefore, Therefore, the duration measured by the N.Cell.Unavail.Dur.EnergySaving counter N.Cell.Unavail.Dur.EnergySaving counter has an approximately 1 minute deviation from the congured congured L LTE TE and NR intelligent carrier shutdown period.
LTE counters:
Issue Draft A (2020-12-29)
●
Check the VS.EnergyCons.BTS.Adding.L VS.EnergyCons.BTS.Adding.LTE TE counter counter to see the power consumption of the entire base station.
●
If LTE LTE a and nd NR NR cells cells are served served by by the same same RF modu module le usin using g th the e SDR SDR technology,, check the VS.EnergyCons.BTSBoard technology the VS.EnergyCons.BTSBoard counter counter to see the LTE power consumption of the RF module.
Copyright © Huawei Technologies Co., Ltd.
27
SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
4 Parameters
4
Parameters
The following hyperlinked EXCEL les les of of parameter documents match the software version with which this document is released. ●
Node Node Parame Parameter ter Refe Refere rence nce:: contain containss devi device ce and trans transpor portt parame parameter ters. s.
●
eNodeBFuncti eNodeBFunction on Parameter Parameter Referen Reference: ce: conta contains ins all parameter parameterss related related to radio access functions, including air interface management, access control,
●
mobility control, and radio resource management. eNodeB eNodeBFun Functio ction n Use Used d Reserv Reserved ed Para Paramet meter er Li List: st: contain containss the rese reserved rved parameters that are in use and those that have been disused. NOT NO T
You can nd nd the the EXCEL les les of of parameter reference and used reserved parameter list for the software version used on the live network from the product documentation do cumentation delivered with that version.
FAQ 1: How do I nd nd the the parameters related to a certain feature from parameter reference? Step 1 Open the EXCEL le le of of parameter reference. reference. Step 2 On the Parameter List sheet, List sheet, lter lter the the Feature ID column. ID column. Click Text Filters and Filters and choose Contains Contains.. Enter the feature ID, for example, LOFD-001016 LOFD-001016 or TDLOFD-001016. Step 3 Click OK OK.. All parameters related to the feature are displayed. ----End FAQ 2: How do I nd nd the the information about a certain reserved parameter from the used reserved parameter list? Step 1 Open the EXCEL le le of of the used reserved parameter list. Step 2 On the Used Reserved Parameter List sheet, List sheet, use the MO MO,, Parameter ID, ID, and BIT columns to locate the reserved parameter parameter,, which may be only a bit of a parameter. parameter. View its information, including the meaning, values, impacts, and product version in which it is activated for use. ----End Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
5 Counters
5
Counters
The following hyperlinked EXCEL les les of of performance counter referen reference ce match the software version with which this document is released. ●
Node Node Perform Performanc ance e Counter Counter Summa Summary: ry: contai contains ns device device and and transp transport ort count counters ers..
●
eNodeB eNodeBFun Functio ction n Perf Perform ormanc ance e Counter Counter Summa Summary: ry: contain containss all counter counterss relate related d to radio access functions, including air interface management, access control, mobility control, and radio resource management. NOT NO T
You can nd nd the the EXCEL les les of of performance counter refer reference ence for the software version used on the live network from the product documentation delivered d elivered with that version.
FAQ: How do I nd nd the the counters related to a certain feature from performance counter reference? reference? Step 1 Open the EXCEL le le of of performance counter reference. reference. Step 2 On the Counter Summary(En) sheet, Summary(En) sheet, lter lter the the Feature ID column. ID column. Click Text Filters and Filters and choose Contains Contains.. Enter the feature ID, for example, LOFD-001016 or TDLOFD-001016. Step 3 Click OK OK.. All counters related to the feature are displayed. ----End
Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
29
SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
6 Glossary
6
Glossary
For the acronyms, abbreviations, terms, and denitions, denitions, see see Glossary .
Issue Draft A (2020-12-29)
Copyright © Huawei Technologies Co., Ltd.
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SingleRAN LTE and NR Intelligent Carrier Shutdown Feature Parameter Description
7 Reference Documents
7
Reference Documents
Issue Draft A (2020-12-29)
●
NSA Networking based on EPC
●
Fe Feat atur ure e param paramet eter er des descr crip iptio tion n do docu cume ment ntss in 5G RAN Feature Documentation : –
Energy Conservation and Emission Reduction
–
Hyper Cell (Low-Frequency TDD)
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