ul unified video steering(sran10.1_02)

SingleRAN

UL Unified Video Steering FeatureParameter Description

Issue 02Date 2015-06-27

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2015. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respectiveholders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.comEmail: [email protected]

Issue 02 (2015-06-27) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

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Contents

1 About This Document.................................................................................................................. 11.1 Scope.............................................................................................................................................................................. 11.2 Intended Audience..........................................................................................................................................................11.3 Change History............................................................................................................................................................... 11.4 Differences Between NodeB Types................................................................................................................................22 Overview......................................................................................................................................... 42.1 Background.....................................................................................................................................................................42.2 Introduction.................................................................................................................................................................... 42.3 Benefits...........................................................................................................................................................................52.4 Architecture.................................................................................................................................................................... 53 Technical Description...................................................................................................................73.1 QoE Assurance for Video Services.................................................................................................................................73.1.1 L2U Video Service QoE Assurance............................................................................................................................ 73.1.2 U2L Video Service QoE Assurance............................................................................................................................ 93.2 Better Cell and Worse Cell Decision............................................................................................................................ 113.2.1 Determining the Better and WorsteNeighboring UMTS Cells.................................................................................. 113.2.2 Determining the Better and Worse Neighboring LTE Cells...................................................................................... 123.3 Rate Pre-evaluation.......................................................................................................................................................133.3.1 Rate Pre-evaluation for Neighboring UMTS Cells................................................................................................... 133.3.2 Rate Pre-evaluation for Neighboring LTE Cells........................................................................................................134 Related Features...........................................................................................................................165 Network Impact........................................................................................................................... 186 Engineering Guidelines............................................................................................................. 196.1 When to Use UL Unified Video Steering..................................................................................................................... 196.2 Required Information................................................................................................................................................... 196.3 Planning........................................................................................................................................................................ 206.3.1 RF Planning............................................................................................................................................................... 206.3.2 Network Planning...................................................................................................................................................... 206.3.3 Hardware Planning.................................................................................................................................................... 206.4 Deployment.................................................................................................................................................................. 206.4.1 Requirements............................................................................................................................................................. 20

SingleRANUL Unified Video Steering Feature Parameter Description Contents


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6.4.2 Data Preparation........................................................................................................................................................ 216.4.3 Precautions.................................................................................................................................................................236.4.4 Activation.................................................................................................................................................................. 236.4.4.1 Using MML Commands.........................................................................................................................................236.4.4.2 MML Command Examples.................................................................................................................................... 246.4.4.3 Using the CME....................................................................................................................................................... 246.4.5 Activation Observation..............................................................................................................................................276.4.6 Deactivation...............................................................................................................................................................276.4.6.1 Using MML Commands.........................................................................................................................................286.4.6.2 MML Command Examples.................................................................................................................................... 286.4.6.3 Using the CME....................................................................................................................................................... 286.4.7 Reconfiguration......................................................................................................................................................... 286.5 Performance Monitoring...............................................................................................................................................296.6 Parameter Optimization................................................................................................................................................296.7 Troubleshooting............................................................................................................................................................ 307 Parameters.....................................................................................................................................318 Counters........................................................................................................................................ 339 Glossary.........................................................................................................................................3510 Reference Documents............................................................................................................... 36

SingleRANUL Unified Video Steering Feature Parameter Description Contents


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1 About This Document1.1 Scope

This document describes MRFD-101401 UL Unified Video Steering, including its technicalprinciples, related features, network impact, and engineering guidelines.

1.2 Intended AudienceThis document is intended for personnel who:l Need to understand the feature described hereinl Work with Huawei products

1.3 Change HistoryThis section provides information about the changes in different document versions. There aretwo types of changes, which are defined as follows:l Feature change

Changes in features and any related parameters affected by editorial changes as well asthe affected entities

l Editorial changeChanges in wording or addition of information that was not described in the earlierversion

SRAN10.1 02 (2015-06-27)This issue includes the following changes.

ChangeType

Change Description Parameter Change

Featurechange

None None

SingleRANUL Unified Video Steering Feature Parameter Description 1 About This Document


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ChangeType

Change Description Parameter Change

Editorialchange

Added dependency of this feature on LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRAN,WRFD-140218 Service-Based PS Handover from UMTS toLTE, and WRFD-150217 Load Based PS Handover fromUMTS to LTE. For details, see the following sections:l 3.1.1 L2U Video Service QoE Assurancel 3.1.2 U2L Video Service QoE Assurancel 4 Related Features

None

Add feature deployment requirements on the CN. For details,see 6.4.1 Requirements.

None

Modified UMTS counters used in the formula for calculatingthe total number of UMTS and LTE users with video ratelower than 1 Mbit/s and the formula for calculating the totalnumber of users on UMTS and LTE networks.

None

SRAN10.1 01 (2015-03-23)This issue does not include any changes.

SRAN10.1 Draft A (2015-01-15)This document is created for SRAN10.1.

1.4 Differences Between NodeB TypesDefinition

The macro base stations described in this document refer to 3900 series base stations. Thesebase stations work in GSM, UMTS, or LTE mode, as listed in the section Scope.The LampSite base stations described in this document refer to distributed base stations thatprovide indoor coverage. These base stations work in UMTS or LTE mode but not in GSMmode.The micro base stations described in this document refer to all integrated entities that work inUMTS or LTE mode but not in GSM mode. Descriptions of boards, cabinets, subracks, slots,and RRUs do not apply to micro base stations.The following table defines the types of micro base stations.

Base Station Model RATBTS3202E LTE FDD



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NOTEThe co-MPT and separate-MPT applications are irrelevant to single-mode micro base stations.

Feature Support by Macro, Micro, and LampSite Base StationsNone.

Function Implementation in Macro, Micro, and LampSite Base StationsNone.



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2 Overview2.1 Background

On a radio network where UMTS and LTE coexist, video service experience degrades due tothe discontinuous network coverage and uneven network load between UMTS and LTE. TheMRFD-101401 UL Unified Video Steering feature has been introduced. This feature steersvideo services between the UMTS and LTE networks to guarantee the experience of videoservice users.

2.2 IntroductionThis feature defines a satisfactory rate for video services on a combined UMTS and LTEnetwork to guarantee the experience of video service users. If the service rate provided by anLTE cell for a video service user is lower than the satisfactory rate for a certain period of timeor if a video service user in a UMTS cell initiates a service- or load-based U2L handover, thisfeature steers the video service user to an inter-RAT cell that is capable of providing thesatisfactory rate, thereby ensuring video service quality.

NOTE

U2L handover refers to a handover from UMTS to LTE.

This feature involves the following terms:l Satisfactory video service rate

The satisfactory video service rate is the minimum downlink service rate, which isspecified by the DLSGBR parameter.

l QoEQuality of Experience (QoE) is indicated by the downlink video service rate.

l QoE-based handoverQoE-based handover is an L2U handover that is triggered when the video service rateprovided by an LTE cell falls below the satisfactory rate.

NOTE

L2U handover refers to a handover from LTE to UMTS.

SingleRANUL Unified Video Steering Feature Parameter Description 2 Overview


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l Better cell, worse cell, and normal cell Better cell is a neighboring cell that is preferentially selected as the target cell

during a handover. Worse cell is a neighboring cell to which UEs are not allowed to initiate a handover

request. Normal cell is a neighboring cell other than the better and worse cells.

l Rate pre-evaluationDuring an inter-RAT handover between UMTS and LTE, the eCoordinator determineswhether a neighboring cell can provide the satisfactory video service rate based on thereceived neighboring cell information.

2.3 BenefitsAfter this feature is enabled for a combined UMTS and LTE network, the number of userswhose video service rate can reach the satisfactory rate increases by 5% to 10%.

2.4 ArchitectureFigure 2-1 shows how information is exchanged between network elements (NEs).

Figure 2-1 Architecture for information exchange between NEs

Table 2-1 Functions of each NE involved in this featureNE FunctionRNC l Determines the better and worse neighboring LTE cells.

l Sends rate pre-evaluation requests to the eCoordinator when a UEthat is processing video services triggers a service- or load-basedU2L handover.



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NE FunctioneCoordinator l Determines the better and worse neighboring UMTS cells.

l Delivers rate pre-evaluation results to the RNC and eNodeB.eNodeB l Sends rate pre-evaluation requests to the eCoordinator when a UE

triggers a QoE-based handover.l Optimizes the interoperability policies between UMTS and LTE

when neighboring UMTS cells or adjacent UMTS frequencies areheavily loaded. For details, see 3 Technical Description.



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3 Technical Description3.1 QoE Assurance for Video Services

This feature is controlled by the following switches:l ULUniVidStAlgoSwitch on the RNC sidel ULUVSSwitch on the eCoordinator sideThis feature takes effect only when the two switches are both turned on.

3.1.1 L2U Video Service QoE AssuranceFigure 3-1 shows the QoE-based handover procedure.

SingleRANUL Unified Video Steering Feature Parameter Description 3 Technical Description


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Figure 3-1 QoE-based handover procedure

Step 1 The eNodeB periodically measures UE's service rate.When a UE initiates a video service, the eNodeB measures the video service rate of the UEevery 1s.

Step 2 The eNodeB makes a QoE-based handover decision.If the video service rate of the UE is lower than the DLSGBR for QoEBasedHandoverLastconsecutive seconds during the period specified by QoEBasedHandoverStat, the eNodeBtriggers a QoE-based handover.

Step 3 The UE reports the Ec/No values of neighboring UMTS cells.When a QoE-based handover is triggered, the eNodeB delivers a measurement controlmessage to the UE, instructing the UE to report the Ec/No values of the better and normalneighboring UMTS cells to the eCoordinator.



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For details about how to determine the better and normal cells, see 3.2.1 Determining theBetter and WorsteNeighboring UMTS Cells.

Step 4 The eCoordinator pre-evaluates the rates of the better and normal cells based on the reportedEc/No values.After rate pre-evaluation, the eCoordinator sends the rate pre-evaluation results to theeNodeB.For details about rate pre-evaluation, see 3.3.1 Rate Pre-evaluation for Neighboring UMTSCells.

Step 5 The eNodeB performs an L2U handover.l If a neighboring cell in the rate pre-evaluation result in Step 4 meets the satisfactory

video service rate, a handover procedure is performed, which is the same as that in theLOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRAN feature.Therefore, before enabling this feature, you need to enable the LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRAN feature. For details about this feature,see Inter-RAT Mobility Management in Connected Mode Feature Parameter Descriptionin eRAN Feature Documentation.If multiple better or normal cells in the rate pre-evaluation results meet the satisfactoryvideo service rate, the eNodeB selects the cell with the best channel quality.

l If no cell in the rate pre-evaluation results meets the satisfactory video service rate, theeNodeB imposes a penalty mechanism.The UE is not allowed to trigger another QoE-based handover within the periodspecified by the OptHoPreFailPunishTimer parameter.

----End

3.1.2 U2L Video Service QoE AssuranceAfter this feature is enabled, if service- or load-based U2L handover is enabled and a UE thatis processing video services in a UMTS cell in either connected mode or idle mode triggers aservice- or load-based U2L handover, the QoE of this UE is guaranteed. Figure 3-2 illustratesthe QoE assurance procedure.If service- or load-based U2L handover is not enabled, the UE must be redirected to the LTEnetwork after it completes the current video service and returns to the idle mode.



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Figure 3-2 U2L video service QoE assurance procedure

Step 1 The UE triggers a service- or load-based U2L handover.The procedure for service- or load-based U2L handover is the same as that in featuresWRFD-140218 Service-Based PS Handover from UMTS to LTE and WRFD-150217 LoadBased PS Handover from UMTS to LTE. Before activating UL Unified Video Steering, youmust turn on the switches controlling the preceding two features. For details, seeInteroperability Between UMTS and LTE Feature Parameter Description in RAN FeatureDocumentation.

Step 2 The UE reports the reference signal received power (RSRP) and reference signal receivedquality (RSRQ) values of neighboring LTE cells.If the UE triggers a service- or load-based U2L handover, the RNC instructs the UE to reportthe RSRP and RSRQ values of the better and normal neighboring LTE cells to theeCoordinator through the eNodeB.For details about how to determine the best and normal cells, see 3.2.2 Determining theBetter and Worse Neighboring LTE Cells.

Step 3 The eCoordinator pre-evaluates the rates of the better and normal cells based on the reportedRSRP and RSRQ values.After rate pre-evaluation, the eCoordinator sends the rate pre-evaluation results to the RNC.For details about rate pre-evaluation, see 3.3.2 Rate Pre-evaluation for Neighboring LTECells.



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Step 4 The RNC performs a U2L handover.l If a neighboring cell in the rate pre-evaluation results meets the satisfactory video service

rate, the RNC performs a service- or load-based U2L handover to this cell.If multiple better or normal cells in the rate pre-evaluation results meet the satisfactoryvideo service rate, the RNC selects the cell with the best channel quality.

l If no cell in the rate pre-evaluation results meets the satisfactory video service rate, theRNC terminates the U2L handover procedure.

----End

3.2 Better Cell and Worse Cell DecisionThe eCoordinator determines the better and worse neighboring UMTS cells, whereas the RNCdetermines the better and worse neighboring LTE cells.

3.2.1 Determining the Better and WorsteNeighboring UMTS CellsThe eCoordinator determines the better and worse neighboring UMTS cells every 5s. Thedecision procedure is as follows:

Step 1 The eCoordinator obtains the following information every 5s from the eNodeB and RNC,respectively:l Neighboring UMTS cell list and average downlink user throughput of the serving LTE

celll Load status and average downlink user throughput of neighboring UMTS cells

Step 2 The eCoordinator determines the better and worse neighboring UMTS cells.l If a neighboring UMTS cell is in the overload control (OLC) or unavailable state, this

cell is considered a worse cell.l If a neighboring UMTS cell is in the normal or load shuffling (LDR) state, the

eCoordinator makes a further decision based on the P/N rule. If a neighboring UMTS cell meets the following condition for N times during P

times, this cell is considered a better cell:(U_N_Cell_USER_Throughput-L_S_Cell_USER_Throughput)/L_S_Cell_USER_Throughput ULBetterCellThd If a neighboring UMTS cell meets the following condition for N times during P

times, this cell is considered a worse cell:(L_S_Cell_USER_Throughput-U_N_Cell_USER_Throughput)/L_S_Cell_USER_Throughput ULWorseCellThd

where P is specified by NCellStatusJudgeStat. N is specified by NCellStatusJudgeLast. U_N_Cell_USER_Throughput is the average downlink user throughput of a

neighboring UMTS cell. L_S_Cell_USER_Throughput is the average downlink user throughput of the

serving LTE cell. ULBetterCellThd is the threshold for the better cell.



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ULWorseCellThd is the threshold for the worse cell.Step 3 The eCoordinator sends the decision results to the eNodeB.

----End

3.2.2 Determining the Better and Worse Neighboring LTE CellsThe RNC determines the better and worse neighboring LTE cells every 5s. The decisionprocedure is as follows:

Step 1 The eCoordinator obtains the following information every 5s from the RNC and eNodeB,respectively:l Neighboring LTE cell list and average downlink user throughput of the serving UMTS

celll Load status and average downlink user throughput of neighboring LTE cells

Step 2 The eCoordinator calculates the following filtered values of the serving UMTS cell andneighboring LTE cells:l Average downlink user throughput of neighboring LTE cells

The eCoordinator obtains the average downlink throughput of neighboring LTE cellsfrom the eNodeB every 5s. The average value is obtained from NCellStatusJudgeLastsample values.

l Average downlink user throughput of the serving UMTS cellThe eCoordinator obtains the average downlink throughput of the serving UMTS cellfrom the RNC every 5s. The average value is obtained from NCellStatusJudgeLastsample values.

l Upper threshold of average throughput of the serving UMTS cellUpper threshold of average throughput of the serving UMTS cell = Average downlinkthroughput of the serving UMTS cell x (1 + ULBetterCellThd)

l Lower threshold of average throughput of the serving UMTS cellLower threshold of average throughput of the serving UMTS cell = Average downlinkthroughput of the serving UMTS cell x (1 - ULWorseCellThd)

Step 3 The eCoordinator sends the following information to the RNC:l Status of neighboring LTE cellsl Average downlink throughput of neighboring LTE cellsl Upper threshold of average throughput of the serving UMTS celll Lower threshold of average throughput of the serving UMTS cell

Step 4 The RNC determines the better and worse neighboring LTE cells.l If a neighboring LTE cell is in the OLC or unavailable state, this cell is considered a

worse cell.l If a neighboring LTE cell is in the normal or LDR state, the RNC makes a further

decision. If the average downlink throughput of a neighboring LTE cell is greater than or

equal to the upper threshold of average throughput of the serving UMTS cell, thiscell is considered a better cell.



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If the average downlink throughput of a neighboring LTE cell is less than or equalto the lower threshold of average throughput of the serving UMTS cell, this cell isconsidered a worse cell.

----End

3.3 Rate Pre-evaluation3.3.1 Rate Pre-evaluation for Neighboring UMTS Cells

When a QoE-based handover is triggered, the eNodeB sends a rate pre-evaluation request tothe eCoordinator, requesting the eCoordinator to pre-estimate the rates of the better andnormal neighboring UMTS cells.The rate pre-evaluation procedure is as follows:

Step 1 The RNC sends information about available code resources in UMTS cells to theeCoordinator.

Step 2 The eNodeB sends the Ec/No values of neighboring UMTS cells to the eCoordinator.Step 3 The eCoordinator calculates the channel quality indicators (CQIs) of neighboring UMTS cells

based on the Ec/No values.Step 4 The eCoordinator determines whether a neighboring UMTS cell can provide the satisfactory

video service rate based on the CQIs and the available code resources, and then sends the ratepre-evaluation results to the eNodeB.----End

3.3.2 Rate Pre-evaluation for Neighboring LTE CellsWhen a UE that is processing video services triggers a service- or load-based U2L handover,the RNC sends a rate pre-evaluation request to the eCoordinator, requesting the eCoordinatorto pre-evaluate rates of the best and normal neighboring LTE cells.The eCoordinator performs rate pre-evaluation using the following two thresholds:l Static threshold

When DynThdSwitch is set to OFF, the static threshold is used.The static threshold is specified by the RSRPThd or RSRQThd parameter.

l Dynamic thresholdWhen DynThdSwitch is set to ON, the dynamic threshold is used.The dynamic threshold is specified by the dynamic RSRP or RSRQ threshold generatedby the eCoordinator.

Static ThresholdThe static threshold is determined based on the configuration of theLTECellPreEvalMeasType parameter.l LTECellPreEvalMeasType is set to RSRP(RSRP).



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If the reported RSRP value of a neighboring LTE cell is greater than or equal toRSRPThd, the eCoordinator determines that the neighboring LTE cell can provide thesatisfactory video service rate.

l LTECellPreEvalMeasType is set to RSRQ(RSRQ).If the reported RSRQ value of a neighboring LTE cell is greater than or equal toRSRQThd, the eCoordinator determines that the neighboring LTE cell can provide thesatisfactory video service rate.

l LTECellPreEvalMeasType is set to BOTH(BOTH).If the reported RSRP and RSRQ values of a neighboring LTE cell are greater than orequal to the corresponding threshold, the eCoordinator determines that the neighboringLTE cell can provide the satisfactory video service rate.

Dynamic Thresholdl Dynamic threshold generation

The dynamic RSRQ threshold is generated in the same way as the dynamic RSRPthreshold. The following uses the generation of the dynamic RSRP threshold as anexample:a. When a QoE-based handover is triggered, the eNodeB sends the RSRP and RSRQ

values of the serving LTE cell to the eCoordinator. The eCoordinator stores thereceived data in its sample database.

b. If the number of RSRP samples received by the eCoordinator is greater than orequal to MeasQuanSampleNum, the eCoordinator uses the latestMeasQuanSampleNum RSRP samples for analysis. If the RSRP values of msamples among MeasQuanSampleNum samples are less than a certain RSRPvalue, this RSRP value is used as the dynamic RSRP threshold. m is the largestpositive integer that meets the following condition:m SampleCumuPercentage * MeasQuanSampleNum

NOTE

For the value ranges of RSRP and RSRQ, see 3GPP TS 36.331: "Radio Resource Control(RRC);Protocol specification".

l Rate pre-evaluationRate pre-evaluation is performed based on the configuration of theLTECellPreEvalMeasType parameter. LTECellPreEvalMeasType is set to RSRP(RSRP).

If the reported RSRP value of a neighboring LTE cell is greater than or equal to thesum of the dynamic RSRP threshold plus RSRPOffset, the eCoordinator determinesthat the neighboring LTE cell can provide the satisfactory video service rate. LTECellPreEvalMeasType is set to RSRQ(RSRQ).

If the reported RSRQ value of a neighboring LTE cell is greater than or equal to thesum of the dynamic RSRQ threshold plus RSRQOffset, the eCoordinatordetermines that the neighboring LTE cell can provide the satisfactory video servicerate. LTECellPreEvalMeasType is set to BOTH(BOTH).

If the reported RSRP and RSRQ values of a neighboring LTE cell are greater thanor equal to the sum of the corresponding dynamic threshold plus the corresponding



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offset, the eCoordinator determines that the neighboring LTE cell can provide thesatisfactory video service rate.



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4 Related FeaturesPrerequisite Features

l LOFD-081203 Video Service Rate AdaptionThe eNodeB uses this feature to identify video services.

l WRFD-150252 Video Service Rate AdaptionThe RNC uses this feature to identify video services.

l LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRANLOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRAN is the basis ofL2U inter-RAT handovers. Therefore, it must be enabled for UL Unified Video Steering.

l WRFD-140218 Service-Based PS Handover from UMTS to LTEIf a UMTS-to-LTE video service handover is required in connected mode, enable theWRFD-140218 Service-Based PS Handover from UMTS to LTE feature.

l WRFD-150217 Load Based PS Handover from UMTS to LTEIf a UMTS-to-LTE video service handover is required in connected mode, enable theWRFD-150217 Load-Based PS Handover from UMTS to LTE feature.

Mutually Exclusive FeaturesNone

Impacted Featuresl WRFD-140218 Service-Based PS Handover from UMTS to LTE

If a UE processing video services triggers a service-based U2L PS handover, thehandover is performed only when the eCoordinator determines that the rate of the targetcell meets the satisfactory rate required by video services.For details, see 3.1.2 U2L Video Service QoE Assurance.

l WRFD-150217 Load Based PS Handover from UMTS to LTEIf a UE processing video services triggers a load-based U2L PS handover, the handoveris performed only when the eCoordinator determines that the rate of the target cell meetsthe satisfactory rate required by video services.For details, see 3.1.2 U2L Video Service QoE Assurance.

l WRFD-140226 Fast Return from UMTS to LTE

SingleRANUL Unified Video Steering Feature Parameter Description 4 Related Features


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After the CS service of an SRVCC or CSFB UE processing a CS+PS combined serviceis complete, the UE triggers a handover-based U2L fast return. If the PS services includevideo services, the RNC performs the handover only when the eCoordinator determinesthat the rate of the target cell meets the satisfactory video service rate. SRVCC is shortfor single radio voice call continuity and CSFB is short for CS fallback.

l LOFD-001044 Inter-RAT Load Sharing to UTRANThe MRFD-101401 UL Unified Video Steering feature impacts target cell selection andUE selection in the LOFD-001044 Inter-RAT Load Sharing to UTRAN feature: Target cell selection

The following neighboring LTE cells are deleted from the neighboring UMTS celllist:n Neighboring cells that are congested or overloadedn Neighboring cells whose NoHoFlag is set to FORBID_HO_ENUM(Forbid

Ho)n Neighboring cells that are worst cells UE selection

After the UL Unified Video Steering feature is enabled, UEs in an LTE cell areclassified into the following two types:n UEs configured with DLSGBRn UEs not configured with DLSGBRDuring Mobility Load Balancing (MLB), only UEs not configured with DLSGBRare selected.

SingleRANUL Unified Video Steering Feature Parameter Description 4 Related Features


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5 Network ImpactSystem Capacity

No impact.

Network PerformanceAfter this feature is enabled, the number of QoE-based handovers increases, whichconsequently increases the number of L2U handovers.During a handover, the eNodeB and RNC need to interact with the eCoordinator, whichprolongs the handover preparation.

SingleRANUL Unified Video Steering Feature Parameter Description 5 Network Impact


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6 Engineering Guidelines6.1 When to Use UL Unified Video Steering

Use this feature in the following scenarios:l Scenario 1

The network is a combined UMTS and LTE network. The LTE cell bandwidth is 10 MHz or smaller. LTE uses a high frequency band (for example, LTE 2600 MHz), whereas UMTS

uses a low frequency band (for example, UMTS 900 MHz). The network is fully covered by UMTS, whereas the LTE network coverage is

insufficient.l Scenario 2

The network is a combined UMTS and LTE network. The LTE cell bandwidth is 10 MHz or smaller. The network load between UMTS and LTE is uneven.

UL dual-mode UEs preferentially camp on the LTE network. The downlinkphysical resource block (PRB) usage on the LTE network is higher than 70%,whereas the transmitted carrier power (TCP) usage on the UMTS network is lowerthan 30%.

NOTE

Downlink PRB usage = Average number of used downlink PRBs (L.ChMeas.PRB.DL.Used.Avg)/Total number of downlink PRBsTCP usage = VS.MeanTCP.NonHS/VS.MeanTCP. VS.MeanTCP.NonHS indicates mean non-HSDPA TCP of a cell and VS.MeanTCP indicates mean TCP of a cell. The VS.MeanTCP.NonHSand VS.MeanTCP counters must be converted to mv before used for TCP usage calculation.

6.2 Required InformationObtain UMTS and LTE network load information. Check whether the downlink PRB usageon the LTE network is higher than 70% and whether the TCP usage on the UMTS network islower than 30%.

SingleRANUL Unified Video Steering Feature Parameter Description 6 Engineering Guidelines


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6.3 Planning

6.3.1 RF PlanningNone

6.3.2 Network PlanningNone

6.3.3 Hardware PlanningThe eCoordinator must have been deployed.

6.4 Deployment

6.4.1 RequirementsOther Features

For details, see 4 Related Features.

HardwareThe eCoordinator must have been deployed.

LicenseFeature ID Feature

NameLicenseControlItemID

LicenseControl Item

NE Sales Unit

MRFD-101401

UL UnifiedVideoSteering

LEC2ULUOC01

UL UnifiedVideo Steering

eCoordinator Per Cell



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Othersl The CN supports L2U and U2L inter-RAT handovers.l The CN supports service identification and separate DSCP allocation for video services.

6.4.2 Data PreparationParameter Name Parameter ID Setting Notes Data SourceUL Unified VideoSteering AlgorithmSwitch

ULUniVidStAlgoS-witch

None Network plan

UL Unified VideoSteering Switch

ULUVSSwitch None Network plan

QoE-BasedHandover Last

QoEBasedHandoverLast

It is recommended that thisparameter be set to a valuegreater than half ofQoEBasedHandoverStat.

Network plan

QoE-BasedHandover Stat

QoEBasedHandoverStat

A smaller parameter valueresults in a higherprobability of triggering aQoE-based handover.A larger parameter valueresults in a lowerprobability of triggering aQoE-based handover.

Network plan

UL Better CellThreshold

ULBetterCellThd A larger value of thisparameter indicates alower probability that atarget cell is regarded asthe best cell, affectinginteroperations betweenUMTS and LTE cells.

Network plan

UL Worse CellThreshold

ULWorseCellThd A smaller value of thisparameter indicates ahigher probability that acell is regarded as theworst cell. Consequently,no target cell may beavailable, affectinginteroperations betweenUMTS and LTE cells.

Network Plan



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Parameter Name Parameter ID Setting Notes Data SourceStatistic Times ofNCell Status Judge

NCellStatusJudge-Stat

A larger value of thisparameter indicates alower probability that aneighboring cell meets theconditions for the best orworst cell, affectinginteroperations betweenUMTS and LTE cells.

Network plan

Last Times ofNCell Status Judge

NCellStatusJudge-Last

It is recommended that thisparameter be set to a valuegreater than half ofNCellStatusJudgeStat.

Network plan

GBR Offset GBROffset The smaller the value ofthis parameter, the higherthe probability that thetarget cell throughputmeets the service GBRrequirements and that UEscan be handed over to thetarget cell that cannot inreturn ensure theprovisioned throughput ofthe UE.

Network plan

Max Number ofOffloaded Users

MaxUserNumOffload

The larger the value of thisparameter, the more theUEs that are handed overto a target cell, which maycause the target cell toexperience congestion.The smaller the value ofthis parameter, the fewerthe UEs that are handedover to a target cell,reducing the feature gains.

Network plan

E-UTRAN CellPre-evaluationType

LTECellPreEvalMeasType

The default value isrecommended.

Network plan

RSRP Threshold RSRPThd This parameter must beconfigured ifDynThdSwitch is set tooff.

Network plan

RSRQ Threshold RSRQThd This parameter must beconfigured ifDynThdSwitch is set tooff.

Network Plan



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Parameter Name Parameter ID Setting Notes Data SourceRSRP Offset RSRPOffset This parameter must be

configured ifDynThdSwitch is set to on.

Network plan

RSRQ Offset RSRQOffset This parameter must beconfigured ifDynThdSwitch is set to on.

Network Plan

Number ofMeasure QuantitySamples

MeasQuanSampleNum

This parameter must beconfigured ifDynThdSwitch is set to on.

Network plan

CumulativeSample Percentage

SampleCumuPercentage

This parameter must beconfigured ifDynThdSwitch is set to on.

Network plan

DynamicThreshold Switch

DynThdSwitch If this parameter is set toon, the dynamic thresholdis used for E-UTRAN cellcapability pre-evaluation.

Network Plan

Downlink ServiceMinimum Bit Rate

DLSGBR It is recommended that thisparameter have the samesetting as DLSGBRconfigured for the UMTSand LTE network toprevent ping-ponghandovers.

Network plan

6.4.3 PrecautionsNone

6.4.4 Activation

6.4.4.1 Using MML CommandsPerform the following operations on the RNC, eNodeB, and eCoordinator sides.l RNC

Run the RNC MML command SET ULDM with UL Unified Video SteeringAlgorithm Switch set to ON(On).

l eNodeBRun the eNodeB MML command MOD QOEHOCOMMONCFG with QoE-BasedHandover Last and QoE-Based Handover Stat set to appropriate values.

l eCoordinatora. Run the eCoordinator MML command SET ULUNIVIDST. In this step, set UL

Unified Video Steering Switch to ON(on) and set Dynamic Threshold Switch toan appropriate value.



23

b. Run the eCoordinator MML command ADD ULUNIVIDSTUCELL to add aUMTS cell enabled with the UL Unified Video Steering feature and set relatedalgorithm parameters.

c. Run the eCoordinator MML command ADD ULUNIVIDSTLCELL to add an LTEcell enabled with the UL Unified Video Steering feature and set related algorithmparameters.

6.4.4.2 MML Command Examples//Enabling UL Unified Video Steering on the RNCSET ULDM: ULUniVidStAlgoSwitch=ON;//Setting QoE-based handover parameters on the eNodeBMOD QOEHOCOMMONCFG: QoEBasedHandoverLast=3,QoEBasedHandoverStat=5;//Enabling UL Unified Video Steering on the eCoordinator and set the dynamic threshold switch//Turning on the dynamic threshold switchSET ULUNIVIDST: ULUVSSwitch=ON, DynThdSwitch=ON;//Turning off the dynamic threshold switchSET ULUNIVIDST: ULUVSSwitch=ON, DynThdSwitch=OFF;//Adding a UMTS cell enabled with the UL Unified Video Steering feature and setting related algorithm parametersADD ULUNIVIDSTUCELL: QueryCellIdType=BYNAME, UMTSCellName="UMTSCELL-1", ULBetterCellThd=10, ULWorseCellThd=10, NCellStatusJudgeStat=3, NCellStatusJudgeLast=2, GBROffset=10, MaxUserNumOffload=5;//Adding an LTE cell enabled with the UL Unified Video Steering feature and setting related algorithm parametersADD ULUNIVIDSTLCELL: QueryCellIdType=BYNAME, LTECellName="LTECELL-1", ULBetterCellThd=10, ULWorseCellThd=10, NCellStatusJudgeStat=3, NCellStatusJudgeLast=2, GBROffset=10, MaxUserNumOffload=10, LTECellPreEvalMeasType=RSRP, RSRPThd=-95, RSRPOffset=5, MeasQuanSampleNum=100, SampleCumuPercentage=95;

6.4.4.3 Using the CME

Method 1NOTE

When configuring the UL Unified Video Steering feature on the CME, perform a single configurationfirst, and then perform a batch modification if required. Configure the parameters of a single objectbefore a batch modification. Perform a batch modification before logging out of the parameter settinginterface.

Step 1 Configure a single object on the CME.Set parameters on the CME according to the operation sequence in Table 6-1. For instructionson how to perform the CME single configuration, see CME Single Configuration OperationGuide.

Step 2 (Optional) Modify objects in batches on the CME.

To modify objects in batches, click on the CME to start the batch modification wizard.For instructions on how to perform a batch modification through the CME batch modificationcenter, press F1 while running the wizard to obtain online help.



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Table 6-1 Configuring parameters on the CMESN MO NE Parameter Name Parameter ID Configurabl

e in CMEBatchModification Center

1 ULUNIVIDST eCoordinator


ULUVSSwitch Yes

DynamicThreshold Switch

DynThdSwitch Yes

2 ULDM RNC UL Unified VideoSteeringAlgorithm Switch

ULUniVidStAlgoSwitch

Yes

3 QOEHOCOMMONCFG

eNodeB

QoE-BasedHandover Last


Yes

QoE-BasedHandover Stat


Yes

4 ULUNIVIDSTUCELL

eCoordinator

Cell Index Type QueryCellType YesCell Type CellType YesLTE Cell Index LTECellIndex YesUMTS Cell Index UMTSCellInde

xYes

LTE Cell Name LTECellName YesUMTS Cell Name UMTSCellNam

eYes

Mobile CountryCode

MCC Yes

Mobile NetworkCode

MNC Yes

eNodeB ID eNodeBId YesRNC ID LogicRncId YesCell ID CellId YesCell FDD/TDDIndication

FddTddInd Yes

UL Better CellThreshold

ULBetterCellThd

Yes


ULWorseCellThd

Yes



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SN MO NE Parameter Name Parameter ID Configurable in CMEBatchModification Center

Statistic Times ofNCell StatusJudge

NCellStatusJudgeStat

Yes

Last Times ofNCell StatusJudge

NCellStatusJudgeLast

Yes

GBR Offset GBROffset YesCell Index Type QueryCellIdTy

peYes

5 ULUNIVIDSTLCELL

eCoordinator

Cell Index Type QueryCellIdType

Yes

LTE Cell Index LTECellIndex YesLTE Cell Name LTECellName YesMobile CountryCode

MCC Yes

Mobile NetworkCode

MNC Yes

eNodeB ID eNodeBId YesCell ID CellId YesUL Better CellThreshold

ULBetterCellThd

Yes


ULWorseCellThd

Yes

Statistic Times ofNCell StatusJudge

NCellStatusJudgeStat

Yes

Last Times ofNCell StatusJudge

NCellStatusJudgeLast

Yes

GBR Offset GBROffset YesMax Number ofOffloaded Users

MaxUserNumOffload

Yes

E-UTRAN CellPre-evaluationType

LTECellPreEvalMeasType

Yes



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SN MO NE Parameter Name Parameter ID Configurable in CMEBatchModification Center

RSRP Threshold RSRPThd YesRSRP Offset RSRPOffset YesRSRQ Threshold RSRQThd YesRSRQ Offset RSRQOffset YesNumber ofMeasure QuantitySamples

MeasQuanSampleNum

Yes

CumulativeSamplePercentage

SampleCumuPercentage

Yes

----End

Method 2For detailed operations, see the following section in the CME product documentation oronline help: Managing the CME > CME Guidelines > Enhanced Feature Management >Feature Operation and Maintenance.

6.4.5 Activation ObservationCheck whether this feature takes effect by using either of the following methods:l Performance counter monitoring

This feature takes effect if any of the following counter values is not 0: L.IRATHO.E2W.QOE.PrepAttOut

L.IRATHO.E2W.QOE.ExecAttOut L.IRATHO.E2W.QOE.ExecSuccOut

l Message tracingThis feature takes effect if any of the following signaling messages is traced:

Se-interface message tracing on the eCoordinator and eNodeB sidesUserAvgThp carried in the ENB CELL LOAD STATUS RPT messageULUVS UCELL CAP EVALUATE REQ Sr-interface message tracing on the eCoordinator and RNC sides

UserAvgThp carried in the ULUVS LCELL CAP messageULUVS LCELL CAP EVALUATE REQ

6.4.6 Deactivation



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6.4.6.1 Using MML CommandsStep 1 Run the eCoordinator MML command SET ULUNIVIDST with UL Unified Video Steering

Switch set to OFF(Off).Step 2 Run the RNC MML command SET ULDM with UL Unified Video Steering Algorithm

Switch set to OFF(Off).----End

6.4.6.2 MML Command Examples//Disabling UL Unified Video Steering on the eCoordinatorSET ULUNIVIDST: ULUVSSwitch=OFF;//Disabling UL Unified Video Steering on the RNCSET ULDM: ULUniVidStAlgoSwitch= OFF;

6.4.6.3 Using the CMENOTE

When configuring the UL Unified Video Steering feature on the CME, perform a single configurationfirst, and then perform a batch modification if required. Configure the parameters of a single objectbefore a batch modification. Perform a batch modification before logging out of the parameter settinginterface.

1. Configure a single object (such as a cell) on the CME.Set parameters on the CME according to the operation sequence in Table 6-2. Forinstructions on how to perform the CME single configuration, see CME SingleConfiguration Operation Guide.

2. (Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects in batches, click on the CME to start the batch modification wizard.For instructions on how to perform a batch modification through the CME batch modificationcenter, press F1 while running the wizard to obtain online help.

Table 6-2 Configuring parameters on the CMESN MO NE Parameter Name Parameter ID Configurabl

e in CMEBatchModification Center

1 ULUNIVIDST eCoordinator


ULUVSSwitch Yes

2 ULDM RNC UL Unified VideoSteeringAlgorithm Switch

ULUniVidStAlgoSwitch

Yes

6.4.7 ReconfigurationNone



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6.5 Performance Monitoringl After this feature is enabled, the percentage of users whose video service rate falls below

the satisfactory rate decreases.Percentage of users whose video service rate falls below the satisfactory rate = Numberof users whose video service rate falls below the satisfactory rate on UMTS and LTEnetworks/Total number of users on UMTS and LTE networksFor example, if the satisfactory video service rate is 1 Mbit/s:Total number of users whose video service rate is lower than 1 Mbit/s on UMTS andLTE networks = VS.RAB.Mean.GBR.DL.Throughput.0 +VS.RAB.Mean.GBR.DL.Throughput.1 + VS.RAB.Mean.GBR.DL.Throughput.2 +L.Traffic.GBRUser.BitRate.Index0 + L.Traffic.GBRUser.BitRate.Index1 +L.Traffic.GBRUser.BitRate.Index2Total number of users on UMTS and LTE networks =VS.RAB.Mean.GBR.DL.Throughput.0 + VS.RAB.Mean.GBR.DL.Throughput.1 +VS.RAB.Mean.GBR.DL.Throughput.2 + VS.RAB.Mean.GBR.DL.Throughput.3 +VS.RAB.Mean.GBR.DL.Throughput.4 + VS.RAB.Mean.GBR.DL.Throughput.5 +VS.RAB.Mean.GBR.DL.Throughput.6 + L.Traffic.GBRUser.BitRate.Index0+L.Traffic.GBRUser.BitRate.Index1 + L.Traffic.GBRUser.BitRate.Index2 +L.Traffic.GBRUser.BitRate.Index3 + L.Traffic.GBRUser.BitRate.Index4 +L.Traffic.GBRUser.BitRate.Index5 + L.Traffic.GBRUser.BitRate.Index6

l After this feature is enabled, the number of QoE-based handovers increases, which canbe observed by querying the values of the following counters: L.IRATHO.E2W.QOE.PrepAttOut

L.IRATHO.E2W.QOE.ExecAttOut L.IRATHO.E2W.QOE.ExecSuccOut

6.6 Parameter OptimizationAfter the feature is activated, you are advised to observe the network performance and modifythe parameters listed in Table 6-3 for optimizing network performance.

Table 6-3 Parameters to be adjustedParameterID

DataSource

Setting Notes

ULBetterCellThd

Networkplan

You can use this parameter to adjust the threshold fordetermining the better target cell.A larger parameter value indicates a higher decision criterion.A smaller parameter value indicates a lower decisioncriterion.



29

ParameterID

DataSource

Setting Notes

ULWorseCellThd

Networkplan

You can use this parameter to adjust the threshold fordetermining the worse target cell.A larger parameter value indicates a higher decision criterion.A smaller parameter value indicates a lower decisioncriterion.

RSRPOffset/RSRQOffset

NetworkPlan

You can use this parameter to adjust the U2L handovercriterion for video users.A larger parameter value indicates a lower probability ofU2L handovers for video users. A smaller parameter valueindicates a higher probability of U2L handovers for videousers.

6.7 TroubleshootingNone



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7 ParametersTable 7-1 Parameters

MO Parameter ID

MMLCommand

FeatureID

FeatureName

Description

QosPolicy

DlSgbr ADDQOSPOLICYMODQOSPOLICYLSTQOSPOLICY

LOFD-081202/LOFD-081203

Busy-HourDownload RateControl/VideoServiceRateAdaption

Meaning: Indicates a guaranteed bit rate for downlinkservices. The value 0 indicates an invalid rate.GUI Value Range: 0~4294967295Unit: Kbit/sActual Value Range: 0~4294967295Default Value: 0

QoEHoCommonCfg


MODQOEHOCOMMONCFGLSTQOEHOCOMMONCFG

MRFD-101401

ULUnifiedVideoSteering

Meaning: Indicates the value P in the P/N rule forQoE-based handover decision. If the throughput isunsatisfactory for P consecutive times during themeasurement period N, QoE-based handover istriggered.GUI Value Range: 0~60Unit: sActual Value Range: 0~60Default Value: 3

SingleRANUL Unified Video Steering Feature Parameter Description 7 Parameters


31

MO Parameter ID

MMLCommand

FeatureID

FeatureName

Description

QoEHoCommonCfg


MODQOEHOCOMMONCFGLSTQOEHOCOMMONCFG

MRFD-101401 /MRFD-101401

ULUnifiedVideoSteering

Meaning: Indicates the value N in the P/N rule forQoE-based handover decision. If the throughput isunsatisfactory for P consecutive times during themeasurement period N, QoE-based handover istriggered.GUI Value Range: 0~60Unit: sActual Value Range: 0~60Default Value: 5

HoMeasComm

OptHoPreFailPunishTimer

MODHOMEASCOMMLSTHOMEASCOMM

LBFD-00201805/TDLBFD-00201805LOFD-001043 /TDLOFD-001043LOFD-001046 /TDLOFD-001046LOFD-00105401/TDLOFD-00105401

ServiceBasedInter-frequencyHandoverServicebasedinter-RAThandover toUTRANServicebasedinter-RAThandover toGERANCamp &Handover Basedon SPID

Meaning: Indicates the punishment time for handoverpreparation failures in optimized handovers, includingfrequency-priority-based handovers, service-basedhandovers, SPID-based handovers back to theHPLMN, and QoE-based handovers.GUI Value Range: 0~20Unit: 30sActual Value Range: 0~600Default Value: 0

UtranNCell

NoHoFlag

ADDUTRANNCELLMODUTRANNCELLLSTUTRANNCELL

LOFD-001019 /TDLOFD-001019

PS Inter-RATMobilitybetweenE-UTRANandUTRAN

Meaning: Indicates whether to allow handover of UEsto the neighboring cell that is determined by theneighboring relation.GUI Value Range: PERMIT_HO_ENUM(Permit Ho),FORBID_HO_ENUM(Forbid Ho)Unit: NoneActual Value Range: PERMIT_HO_ENUM,FORBID_HO_ENUMDefault Value: PERMIT_HO_ENUM(Permit Ho)

SingleRANUL Unified Video Steering Feature Parameter Description 7 Parameters


32

8 CountersTable 8-1 Counters

Counter ID Counter Name CounterDescription

Feature ID Feature Name

1526736761 L.IRATHO.E2W.QOE.PrepAttOut

Number of QoE-based EUTRAN-to-WCDMA handoverattempts

Multi-mode:MRFD-101401GSM: NoneUMTS: NoneLTE: None

UL Unified VideoSteering

1526736762 L.IRATHO.E2W.QOE.ExecAttOut

Number of QoE-based EUTRAN-to-WCDMA handoverexecutions



1526736763 L.IRATHO.E2W.QOE.ExecSuccOut

Number ofsuccessful QoE-based EUTRAN-to-WCDMAhandovers



1526736781 L.Traffic.GBRUser.BitRate.Index0

Number of UEs thatare configured witha GBR and whosethroughput fallswithin range 0 in acell







SingleRANUL Unified Video Steering Feature Parameter Description 8 Counters


33

Counter ID Counter Name CounterDescription

Feature ID Feature Name





















SingleRANUL Unified Video Steering Feature Parameter Description 8 Counters


34

9 GlossaryFor the acronyms, abbreviations, terms, and definitions, see Glossary.

SingleRANUL Unified Video Steering Feature Parameter Description 9 Glossary


35

10 Reference Documents1. 3GPP TS 36.331: Radio Resource Control (RRC); Protocol Specification2. Interoperability Between UMTS and LTE Feature Parameter Description

SingleRANUL Unified Video Steering Feature Parameter Description 10 Reference Documents


36

Contents1 About This Document1.1 Scope1.2 Intended Audience1.3 Change History1.4 Differences Between NodeB Types

2 Overview2.1 Background2.2 Introduction2.3 Benefits2.4 Architecture

3 Technical Description3.1 QoE Assurance for Video Services3.1.1 L2U Video Service QoE Assurance3.1.2 U2L Video Service QoE Assurance

3.2 Better Cell and Worse Cell Decision3.2.1 Determining the Better and WorsteNeighboring UMTS Cells3.2.2 Determining the Better and Worse Neighboring LTE Cells

3.3 Rate Pre-evaluation3.3.1 Rate Pre-evaluation for Neighboring UMTS Cells3.3.2 Rate Pre-evaluation for Neighboring LTE Cells

4 Related Features5 Network Impact6 Engineering Guidelines6.1 When to Use UL Unified Video Steering6.2 Required Information6.3 Planning6.3.1 RF Planning6.3.2 Network Planning6.3.3 Hardware Planning

6.4 Deployment6.4.1 Requirements6.4.2 Data Preparation6.4.3 Precautions6.4.4 Activation6.4.4.1 Using MML Commands6.4.4.2 MML Command Examples6.4.4.3 Using the CME

6.4.5 Activation Observation6.4.6 Deactivation6.4.6.1 Using MML Commands6.4.6.2 MML Command Examples6.4.6.3 Using the CME

6.4.7 Reconfiguration

6.5 Performance Monitoring6.6 Parameter Optimization6.7 Troubleshooting

7 Parameters8 Counters9 Glossary10 Reference Documents