enhanced fast dormancy(ran13.0_03)

7/31/2019 Enhanced Fast Dormancy(RAN13.0_03)

http://slidepdf.com/reader/full/enhanced-fast-dormancyran13003 1/23

Enhanced Fast DormancyRAN13.0

Feature Parameter Description

Issue 03

Date 2011-12-30

HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent 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 respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase 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 or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

http://www.huawei.com/


mailto:[email protected]






WCDMA RAN

Enhanced Fast Dormancy Contents

Issue 03 (2011-12-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd

i

Contents

1 Introduction ................................................................................................................................ 1-1 1.1 Scope ............................................................................................................................................ 1-1 1.2 Intended Audience ........................................................................................................................ 1-1 1.3 Change History .............................................................................................................................. 1-1

2 Overview ..................................................................................................................................... 2-1 3 Technical Description .............................................................................................................. 3-1 4 Identifying Fast Dormancy UEs ............................................................................................ 4-1 5 State Transitions for Fast Dormancy UEs .......................................................................... 5-1 6 Engineering Guidelines........................................................................................................... 6-1

6.1 When to Use Enhanced Fast Dormancy ....................................................................................... 6-1 6.2 Information to Be Collected ........................................................................................................... 6-1

6.2.1 Deployment Requirements ................................................................................................... 6-1 6.2.2 Feature Activation ................................................................................................................. 6-1 6.2.3 Activation Observation .......................................................................................................... 6-2 6.2.4 Deactivation .......................................................................................................................... 6-3

6.3 Performance Monitoring ................................................................................................................ 6-4 7 Parameters ................................................................................................................................. 7-1 8 Counters

...................................................................................................................................... 8-1 9 Glossary ...................................................................................................................................... 9-1 10 Reference Documents.........................................................................................................10-1



WCDMA RAN

Enhanced Fast Dormancy 1 Introduction



1-1

1 Introduction

1.1 Scope

This document describes the feature WRFD-020500 Enhanced Fast Dormancy.

1.2 Intended Audience

This document is intended for:

Personnel who need to understand Enhanced Fast Dormancy (EFD).

Personnel who work with Huawei products

1.3 Change History

This section provides information about the changes in different document versions.

There are two types of changes, which are defined as follows:

Feature change: refers to a change in the fast dormancy feature of a specific product version.

Editorial change: refers to a change in wording or the addition of information that was not described inthe earlier version.

Document Issues

The document issues are as follows:

03 (2011-12-30)

02 (2011-06-30)

01 (2011-04-30) Draft B (2011-03-30)

Draft A (2010-12-30)

03 (2011-12-30)

This document is for the third commercial release of RAN13.0.

Compared with issue 02 (2011-06-30) of RAN13.0, the document description is optimized to improve thereadability.

02 (2011-06-30)

This document is for the second commercial release of RAN13.0.

Compared with issue 01 (2011-04-30) of RAN13.0, the description about standard fast dormancy isadded.

01 (2011-04-30)

This document is for the first commercial release of RAN13.0.

Compared with issue Draft B (2011-03-30) of RAN13.0, this issue has no changes.

Draft B (2011-03-30)

This is the second draft of the document for RAN13.0.

Compared with Draft A (2010-12-30) of RAN13.0, this issue optimizes the description.



WCDMA RAN

Enhanced Fast Dormancy 1 Introduction



1-2

Draft A (2010-12-30)

This is the first draft of the document for RAN13.0.

Compared with issue 01 (2010-03-30) of RAN12.0, this issue optimizes the description.



WCDMA RAN

Enhanced Fast Dormancy 2 Overview



2-1

2 Overview

Some intelligent UEs on a live network send a Signaling Connection Release Indication (SCRI) messageto the RNC after PS data transmission is complete. By sending the SCRI message, intelligent UEs

request for a transition to idle mode or the CELL_PCH or URA_PCH state to reduce batteryconsumption. Upon receiving the SCRI, the RNC can release the signaling connection and put the UEinto idle mode, or the RNC can maintain the signaling connection and put the UE to CELL_FACH or CELL_PCH/URA_PCH state. RSVDBIT1_BIT29 of the RsvdPara1 parameter in the SETURRCTRLSWITCH command controls the UE through CELL_FACH to CELL_PCH/URA_PCH or directly to CELL_PCH/URA_PCH. These procedures can reduce battery consumption, depending on theUE capability and feature activation on the RNC. By default, the RNC puts the UE into idle mode. A UEsetting up PS services in idle mode consumes more signaling resources than that in the CELL_PCH or URA_PCH state. If there are a large number of UEs transited between idle mode and CELL_DCH state,signaling storms may occur. The EFD feature puts UEs into the CELL_FACH or CELL_PCH state toreduce signaling resource consumption and eliminate signaling storms.

Huawei provides a comprehensive end-to-end solution based on network characteristics to respond to

network challenges. EFD is one component of the solution. This feature alone is not enough to eliminatesignaling storms caused by intelligent UEs. However, when applied with professional services, EFD canbe used to optimize the quality of service (QoS) for the entire network.

Consult Huawei engineers to receive the appropriate parameter settings for this feature along with other comprehensiveprofessional support. Do not configure the EFD parameters without Huawei professional technical support. Inappropriateparameter settings may lead to network failures.

The UEs on a live network can be divided into three types:

UEs that do not send SCRI messages because there is no PS data to be transmitted.

Pre fast dormancy UEs. This type of UE does not read the T323 information element (IE) carried in the

system information block type 1 (SIB1) message. After PS data transmission is complete, this type of UE sends an SCRI message to the RNC, but the SCRI message does not carry the IE SignalingConnection Release Indication Cause. Both T323 and Signaling Connection Release Indication Causeare introduced in 3GPP Release 8.

R8 fast dormancy UEs. This type of UE reads the T323 IE carried in the SIB1 message and sends anSCRI message to the RNC after PS data transmission is complete. The SCRI message carries the IESignaling Connection Release Indication Cause that is set to "UE Requested PS Data session end."

The T323 IE carried in the SIB1 message controls the frequency at which the R8 fast dormancy UEssend SCRI messages with the IE Signaling Connection Release Indication Cause set to "UE RequestedPS Data session end". The T323 timer starts after an SCRI message is sent by the R8 fast dormancyUEs, and the second SCRI message with the IE Signaling Connection Release Indication Cause set to

"UE Requested PS Data session end" can be sent only after the T323 timer expires.

The EFD feature applies only to the pre fast dormancy UEs and R8 fast dormancy UEs. Users canconfigure EFD to be enabled for only the pre fast dormancy UEs or R8 fast dormancy UEs.

When this feature is disabled, the RNC releases the signaling connection and puts the UE into idle modeafter receiving the SCRI message regardless the UE types.

When this feature is enabled, the RNC performs different processing based on the UE type:

For the pre fast dormancy UEs, the RNC checks for compatibility issues after receiving an SCRImessage. If there are no compatibility issues, the RNC puts the UE into the CELL_FACH or PCH state.If there is a compatibility issue, the RNC puts the UE into idle mode.

For the R8 fast dormancy UEs, the RNC puts the UE into the CELL_FACH or PCH state after receivingan SCRI message.

http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/urrctrlswitch_rsvdpara1.html






WCDMA RAN

Enhanced Fast Dormancy 2 Overview



2-2

Some pre fast dormancy UEs may have compatibility issues after moving to the CELL_FACH, CELL_PCH, or URA_PCHstate. As a result, new services cannot be initiated. This feature has been tested by using iPhones and no compatibilityissue occurred.



WCDMA RAN

Enhanced Fast Dormancy 3 Technical Description



3-1

3 Technical Description

When there is no PS data to be transmitted, the intelligent UE sends the RNC an SCRI message torequest the UTRAN to release the signaling connection. This procedure saves power. In addition, the UE

periodically sends heartbeat messages to the core network, for example, to check for new mails on themail server. If the EFD feature is disabled, the RNC releases the signaling connection and puts the UEinto the idle state. In this case, sending heartbeat messages leads to the procedures for RRC connectionsetups, authentication, encryption, and RAB setups. These procedures increase the RNC signalingprocessing load.

EFD addresses this problem. With EFD, the RNC transits a UE to the CELL_FACH or PCH state insteadof idle mode upon receiving an SCRI message from the UE. In this case, when the UE periodically sendsheartbeat messages, the signaling procedure between the UE and RNC is simplified because the RRCconnection is maintained. As the number of signaling exchange messages decreases, significant CPUresources can be saved for the RNC, and the UE consumes about the same low amount of batterypower as a UE in idle mode.

This feature is controlled by FAST_DORMANCY_SWITCH of the PROCESSSWITCH parameter in the SET URRCTRLSWITCH command.

Figure 3-1 shows the signaling processing procedures for pre fast dormancy UEs and R8 fast dormancyUEs before and after EFD is enabled.

Figure 3-1 Signaling processing procedures for pre fast dormancy UEs and R8 fast dormancy UEs beforeand after EFD is enabled

http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/urrctrlswitch_processswitch.html






WCDMA RAN

Enhanced Fast Dormancy 4 Identifying Fast Dormancy UEs



4-1

4 Identifying Fast Dormancy UEs

The RNC identifies the pre fast dormancy UEs and R8 fast dormancy UEs using the followingmechanisms:

R8 fast dormancy: The T323 parameter that can be set in the SET UCONNMODETIMER command issent to the UE by the SIB1 message. The R8 fast dormancy UEs send an SCRI message with the IESignaling Connection Release Indication Cause set to "UE Requested PS Data session end" after PSdata transmission is complete. The RNC identifies the R8 fast dormancy UEs by reading the value of IE Signaling Connection Release Indication Cause.

This mechanism is standardized by 3GPP Release 8.

Pre fast dormancy: The RNC identifies the pre fast dormancy UEs using the Type Allocation Codes(TACs).

This mechanism, which is not standardized, is used for the early proprietary implementations of fastdormancy.

The international mobile equipment identity (IMEI), which consists of 14 decimal digits and one checkdigit, contains TAC and SNR. TAC indicates a particular type of device that has been approved by anational GSM/WCDMA approval body. SNR is the serial number identifying the UE. The structure of theIMEI, which is shown as follows, is specified in 3GPP TS 23.003.

TAC (8bit) SNR (6bit) Spare (1bit)

To identify pre fast dormancy UEs, FD_TAC_MATCH_SWITCH of the PROCESSSWITCH parameter onthe RNC side needs to be turned on. The TAC parameter has been set for the pre fast dormancy UEs bythe ADD UIMEITAC command. The RNC checks the TAC of the IMEI in the IDENTITY REQUESTmessage. If the TAC is included in the EFD list, the UE can use EFD.

http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/uconnmodetimer_t323.html



http://3ms.huawei.com/term/docMaintain/termOperate.do?method=listTermAndDefinition&f_id=20091010000296&fd_id=47313&node_id=1-9&searchType=fulltext&searchValue=IMEI&caseSensitive=&language_t=cn






http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/uimeitac_tac.html









WCDMA RAN

Enhanced Fast Dormancy 5 State Transitions for Fast Dormancy UEs



5-1

5 State Transitions for Fast Dormancy UEs

When EFD is disabled, upon receiving an SCRI message from a UE, the RNC releases the UE’s RRCconnection. The EFD switches are specified by the RNC-level subparameter

FAST_DORMANCY_SWITCH of the parameter PROCESSSWITCH .

When EFD is enabled, state transition procedures vary according to the UE type as follows:

For R8 fast dormancy UEs and pre fast dormancy UEs in EFD list:

− If the RNC received the SCRI, The RNC transfers the UE to CELL_FACH or CELL_PCH/URA_PCH.The RSVDBIT1_BIT29 subparameter of the RsvdPara1 parameter in the SET URRCTRLSWITCHcommand controls whether the UE moves to CELL_FACH or CELL_PCH/URA_PCH.

− After PS data transmission is complete, If UE is in CELL_DCH, the PS inactivity timer (PsInactTmrForFstDrmDch ) for EFD in CELL_DCH is started. If the PS inactivity timer for EFD inCELL_DCH expires, the RNC transfers the UE to CELL_FACH or CELL_PCH/URA_PCH.

− After PS data transmission is complete, If UE is in CELL_FACH, the PS inactivity timer

(PsInactTmrForFstDrmFach ) for EFD in CELL_FACH is started. If the PS inactivity timer for EFD inCELL_FACH expires, the RNC transfers the UE to CELL_PCH/URA_PCH.

− If UE is transferred to CELL_PCH/URA_PCH, the PS inactivity timer (PsInactTmrForPreFstDrm ) isstarted. If the PS inactivity timer for EFD in CELL_PCH expires, the RNC transfers the UE to IDLE.

− If UE is in CELL_PCH/URA_PCH and has something to send and the condition for P2D is notsatisfied, the RNC instructs the UE to enter the CELL_FACH state. For details about conditions for P2D, see Table 5-1.

− If UE is in CELL_FACH and send messages whose traffic volume is higher thanFastDormancyF2DHTvmThd , The RNC will transfer the UE from CELL_FACH to CELL_DCH.

− When the switch RSVDBIT1_BIT20 of RsvdPara1 in the SET URRCTRLSWITCH command isturned on and the UE tries to originate or terminate a CS service and the FACH is congested, the

RNC instructs the UE to perform a P2D (instead of P2F) state transition.− When the switch FACH_DTCH_CONGEST_P2D of PROCESSSWITCH2 in the SETURRCTRLSWITCH command is turned on and the UE tries to originate or terminate a PS service andthe FACH is congested, the RNC instructs the UE to perform a P2D (instead of P2F) state

For pre fast dormancy UEs not in EFD list:

− If the RNC received the SCRI, the RNC transfers the UE to IDLE state.

− The D2F/F2P/P2F/F2D/P2D state transition for pre fast dormancy UEs not in EFD list is the same toordinary UEs. For details, see State Transition Feature Parameter Description .

Figure 5-1 shows the state transitions for a fast dormancy UE.







http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/upsinacttimer_psinacttmrforfstdrmdch.html






http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/upsinacttimer_psinacttmrforprefstdrm.html



http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/uuestatetrans_fastdormancyf2dhtvmthd.html





http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/urrctrlswitch_processswitch2.html













WCDMA RAN




5-2

Figure 5-1 State transitions for a fast dormancy UE

The specific state transition in Figure 5-1 depends on the data configuration on the RNC side listed inTable 5-1.



WCDMA RAN




5-3

Table 5-1 Data configuration for state transitions for a fast dormancy UE

Type Description

D2P

D2FF2P

D2P indicates a transition from CELL_DCH to CELL_PCH, F2P from CELL_FACH to

CELL_PCH, and D2F from CELL_DCH to CELL_FACH.The RNC starts the PS inactivity timer for fast dormancy when inactivity on PS data is detected.

PsInactTmrForFstDrmDch specifies the PS inactivity timer for CELL_DCH.

PsInactTmrForFstDrmFach specifies the PS inactivity timer for CELL_FACH.

PsInactTmrForPreFstDrm specifies the PS inactivity timer for CELL_PCH.

If the UE is a fast dormancy UE and is not processing CS services, when the PS inactivity timer for fast dormancy expires or the RNC receives an SCRI message or 4B event from the UE, theUE changes states as follows:

For a UE in the CELL_DCH state:

− If RSVDBIT1_BIT29 of RsvdPara1 in the SET URRCTRLSWITCH command is turned off,

the RNC triggers a D2F state transition.− If RSVDBIT1_BIT29 of RsvdPara1 in the SET URRCTRLSWITCH command is turned on,the RNC triggers a D2P state transition.

The D2F and F2P state transitions are recommended for the following reasons:

During an IOT test, some terminal issues occur. Occasionally, terminals fail to establish services after atransition from CELL_DCH to CELL_PCH/URA_PCH. This failure has a bad impact on user experience.

Compare with a state transition from CELL_DCH to CELL_FACH and then to CELL_PCH/URA_PCH, thestate transition from CELL_DCH to CELL_PCH/URA_PCH does not improve the network performance or user experience.

Some terminals send CELL UPDATE message to transfer data immediately after a state transition fromCELL_DCH to CELL_PCH/URA_PCH, which increases the signaling messages and leads to a heavy load on

the Uu interface.

For a UE in the CELL_FACH state, the RNC trigger an F2P state transition.

D2I D2I indicates a transition from CELL_DCH to idle.

When the FACH is congested, D2F is not triggered for inactive CELL_DCH users. Instead, theRNC triggers a D2I transition to release the UE's RRC connection.

The switch for D2I is turned off by default. Run the following command to switch it on:

SET UCORRMALGOSWITCH: ReservedSwitch0=RESERVED_SWITCH_0_BIT16-1;

P2I P2I indicates a transition from CELL_PCH to idle.

If the UE is in the CELL_PCH state, when the PS inactivity timer for fast dormancy (specified by

PsInactTmrForPreFstDrm ) expires, the RNC releases the UE's RRC connection and then theUE enters idle mode.

P2D P2D indicates a transition from CELL_PCH to CELL_DCH.

When the switch RSVDBIT1_BIT20 of RsvdPara1 in the SET URRCTRLSWITCH command isturned on and the UE tries to originate or terminate a CS service and the FACH is congested, theRNC instructs the UE to perform a P2D (instead of P2F) state transition.

When the switch FACH_DTCH_CONGEST_P2D of PROCESSSWITCH2 in the SETURRCTRLSWITCH command is turned on and the UE tries to originate or terminate a PS serviceand the FACH is congested, the RNC instructs the UE to perform a P2D (instead of P2F) statetransition.



http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-para/upsinacttimer_psinacttmrforfstdrmfach.html




























WCDMA RAN




5-4

Type Description

P2F P2F indicates a transition from CELL_PCH to CELL_FACH.

When the UE has something to send and the condition for P2D is not satisfied, the RNC instructs

the UE to enter the CELL_FACH state. For details about conditions for P2D, see above P2Ddescription.

F2D F2D indicates a transition from CELL_FACH to CELL_DCH.

When a fast dormancy UE is in the CELL_FACH state, When the fast dormancy UE sendmessages whose traffic volume is higher than FastDormancyF2DHTvmThd , The RNC willtransfer the UE from CELL_FACH to CELL_DCH. The FastDormancyF2DHTvmThd is a newthreshold of event 4a for fast dormancy UE, This threshold is set to bigger than traffic volume of most heartbeat messages so that to prevent state transitions from being triggered by a smallnumber of heartbeat messages.











WCDMA RAN

Enhanced Fast Dormancy 6 Engineering Guidelines



6-1

6 Engineering Guidelines

6.1 When to Use Enhanced Fast Dormancy

The EFD feature is recommended for scenarios where the proportion of intelligent UEs is high, leadingto a high CPU load on SPU boards in the RNC and on baseband processing boards in the NodeB. Thisfeature reduces the Uu, Iu, and Iub signaling, uplink and downlink channel element (CE) consumption,and CPU load.

6.2 Information to Be Collected

6.2.1 Deployment Requirements

Before deploying EFD, ensure that the license for this feature has been activated.

6.2.2 Feature Activation

The feature activation procedure for R8 fast dormancy UEs differs from that for pre fast dormancy UEs.

To activate this feature for R8 fast dormancy UEs, perform the following steps:

Step 1 Run the following command to turn on FAST_DORMANCY_SWITCH:

SET URRCTRLSWITCH: PROCESSSWITCH=FAST_DORMANCY_SWITCH-1;

Step 2 Set the T323 timer.

If the CELL_PCH state is enabled for R8 fast dormancy UEs, run the following command to setthe T323 parameter to D120 (120s):

SET UCONNMODETIMER: T323=D120;

If the CELL_PCH state is disabled for R8 fast dormancy UEs, run the following command to setthe T323 timer to D10 (10s):

SET UCONNMODETIMER: T323=D10;

Step 3 Run the following command to turn on FD_TAC_MATCH_SWITCH:

SET URRCTRLSWITCH: PROCESSSWITCH=FD_TAC_MATCH_SWITCH-1;

Step 4 Run the following command to set the PsInactTmrForFstDrmDch parameter for fast dormancyUEs in the CELL_DCH state:

SET UPSINACTTIMER: PsInactTmrForFstDrmDch=4;

Step 5 Run the following command to set the PsInactTmrForFstDrmFach parameter for fast dormancyUEs in the CELL_FACH state:

SET UPSINACTTIMER: PsInactTmrForFstDrmFach=4;

Step 6 Run the following command to set the PsInactTmrForPreFstDrm parameter for fast dormancyUEs in the CELL_PCH or URA_PCH state:

SET UPSINACTTIMER: PsInactTmrForPreFstDrm=1800,

Step 7 Run the following command to set the FastDormancyF2DHTvmThd parameter for fastdormancy UEs to D1024:

SET UUESTATETRANS: FastDormancyF2DHTvmThd=D1024;



























WCDMA RAN




6-2

---End

To activate this feature for pre fast dormancy UEs, perform the following steps:

Step 1 Run the following command to turn on FAST_DORMANCY_SWITCH:


Step 2 Run the following command to turn on FD_TAC_MATCH_SWITCH:


Step 3 Run the following command to set the PsInactTmrForFstDrmDch parameter for fast dormancyUEs in the CELL_DCH state:

SET UPSINACTTIMER: PsInactTmrForFstDrmDch=4;

Step 4 Run the following command to set the PsInactTmrForFstDrmFach parameter for fast dormancyUEs in the CELL_FACH state:

SET UPSINACTTIMER: PsInactTmrForFstDrmFach=4;

Step 5 Run the following command to set the PsInactTmrForPreFstDrm parameter for fast dormancyUEs in the CELL_PCH state:

SET UPSINACTTIMER: PsInactTmrForPreFstDrm=1800;

Step 6 Run the following command to set the FastDormancyF2DHTvmThd parameter for fastdormancy UEs to D1024:

SET UUESTATETRANS: FastDormancyF2DHTvmThd=D1024;

Step 7 Run the following command to add the corresponding IMEI TAC to the EFD list:

ADD UIMEITAC: TAC_FUNC=Fast_Dormancy, TAC=01177600, Description="Iphone",FastDormancy=ON;

---End

6.2.3 Activation Observation

To verify whether EFD has been enabled for R8 fast dormancy UEs, perform the following steps:

Step 1 Use an R8 fast dormancy UE to start UE tracing and enable EFD. Obtain the UE IMSI. You areadvised to use an iPhone running iOS4.2.1 or later.

Step 2 Use the R8 fast dormancy UE to initiate PS data transmission. After PS data transmission iscomplete, verify that the UE sends an SCRI message with the IE Signaling Connection Release

Indication Cause set to "UE Requested PS Data session end."

Step 3 Check the state of the UE after the RNC receives the SCRI message as follows:

If the UE is in the CELL_DCH state, run the LST URRCTRLSWITCH command.

− If RSVDBIT1_BIT29 of the RsvdPara1 parameter is set to 0, the UE moves to the CELL_FACH state,waits for the period of time specified by PsInactTmrForFstDrmFach , and then moves to theCELL_PCH or URA_PCH state.

− If RSVDBIT1_BIT29 of the RsvdPara1 parameter is set to 1, the UE moves to the CELL_PCH or URA_PCH state.

If the UE is in the CELL_FACH state, the UE moves to the CELL_PCH or URA_PCH state.

---End































WCDMA RAN




6-3

To verify whether EFD has been enabled for pre fast dormancy UEs in the EFD list, perform the followingsteps:

Step 1 Use a pre fast dormancy UE to start UE tracing and enable this feature. Obtain the UE IMSI.Note that the IMEI TAC of the UE must be included in the EFD list.

Step 2 Use the pre fast dormancy UE to initiate PS data transmission. After PS data transmission iscomplete, verify that the UE sends an SCRI message without the IE Signaling ConnectionRelease Indication Cause.


If the UE is in the CELL_DCH state, run the LST URRCTRLSWITCH command.

− If RSVDBIT1_BIT29 of the RsvdPara1 parameter is set to 0, the UE moves to the CELL_FACH state,waits for the period of time specified by PsInactTmrForFstDrmFach , and then moves to theCELL_PCH or URA_PCH state.

− If RSVDBIT1_BIT29 of the RsvdPara1 parameter is set to 1, the UE moves to the CELL_PCH or URA_PCH state.

If the UE is in the CELL_FACH state, the UE moves to the CELL_PCH or URA_PCH state.

To verify whether EFD has been enabled for pre fast dormancy UEs not in the EFD list, perform thefollowing steps:

Step 1 Select a pre fast dormancy UE of which the IMSI TAC is not in the EFD list. Use the UE to startUE tracing and enable the EFD feature.

Step 2 Use the pre fast dormancy UE to initiate PS data transmission. After PS data transmission iscomplete, verify that the UE sends an SCRI message without the IE Signaling ConnectionRelease Indication Cause.


If the UE is in the idle state, this feature is functional. If the UE is in another state, this feature isnot functional.

---End

6.2.4 Deactivation

To deactivate this feature, perform the following steps:

Step 1 Run the following commands to list and remove the IMEI TAC from the EFD list:

LST UIMEITAC: TAC_FUNC=Fast_Dormancy;

RMV UIMEITAC: TAC_FUNC=Fast_Dormancy, TAC=xxxxxxxx;

Step 2 Run the following command to turn off FAST_DORMANCY_SWITCH:


Step 3 Run the following command to turn off FD_TAC_MATCH_SWITCH:


Step 4 Run the following command to set T323 to INVALID for R8 fast dormancy UEs:

SET UCONNMODETIMER: T323=INVALID;

---End



















WCDMA RAN




6-4

6.3 Performance Monitoring

Table 6-1 lists the counters whose values will decrease after this feature is enabled.

Table 6-1 Counters

ID Counter Description

67174450 VS.RRC.AttConnEstab.RNC Number of RRC Connection Requestsprocessed by RNC

67174788 VS.RAB.AttEstabPS.Conv.RNC Number of the PS RABs requested toestablish for conversational services

67174785 VS.RAB.AttEstabPS.Bkg.RNC Number of the PS RABs requested toestablish for background services

67174787 VS.RAB.AttEstabPS.Int.RNC Number of the PS RABs requested toestablish for interactive services

67174786 VS.RAB.AttEstabPS.Str.RNC Number of the PS RABs requested toestablish for streaming services

67202567 VS.LC.ULCreditUsed.Mean Mean Usage of UL Credit for Cell

67202570 VS.LC.DLCreditUsed.Mean Mean Usage of DL Credit for Cell

73415210 VS.XPU.CPULOAD.MEAN Average CPU Usage of the XPU

The counter, as shown in Table 6-2, has been added to measure the number of RRC connections

released for R8 fast dormancy UEs after the RNC receives an SCRI message with the IE SignalingConnection Release Indication Cause set to "UE Requested PS Data session end".

Table 6-2 Added Counter

Counter ID Counter Name Counter Description Feature ID FeatureName

73391137 VS.RRC.SigConnRelInd.UEPSDataEnd

Number of RRCs Release Due toReceiving SIGNALLINGCONNECTION RELEASEINDICATION message with causeof "UE Requested PS Data sessionend" for cell

WRFD-020500 EnhancedFastDormancy



WCDMA RAN

Enhanced Fast Dormancy 7 Parameters



7-1

7 Parameters

Table 7-1 Parameter description

Parameter ID NE MML Command DescriptionFastDormancyF2DHTvmThd

BSC6900 SETUUESTATETRANS(Optional)

Meaning: This parameter specifies the threshold of the traffic volume of 4A event for triggering thetransition of fast dormancy user from FACH/E_FACHto DCH/HSPA.

GUI Value Range: D16, D32, D64, D128, D256,D512, D1024, D2k, D3k, D4k, D6k, D8k, D12k, D16k,D24k, D32k, D48k, D64k, D96k, D128k, D192k,D256k, D384k, D512k, D768k

Actual Value Range: 16, 32, 64, 128, 256, 512, 1024,2k, 3k, 4k, 6k, 8k, 12k, 16k, 24k, 32k, 48k, 64k, 96k,

128k, 192k, 256k, 384k, 512k, 768kUnit: byte

Default Value: D3k

PROCESSSWITCH2

BSC6900 SETURRCTRLSWITCH(Optional)

Meaning: 1) LOAD_IRAT_HO_RNC_FILL_TL (CellLoad Information TL Input Switch)

During inter-RAT handovers from 3G cells to 2Gcells, the RNC can records information about load on3G cells in the RELOCATION REQUIRED container in the Tag Length Value (TLV) format.

When the switch is turned on, the RNC records theTag Length in the container.

When the switch is turned off, the RNC does notrecord the Tag Length.

2) SEND_IDT_JUDGE_IU_RESET (Switch for Transferring INITIAL UE Messages in the IU ResetState)

When the switch is turned on, the RNC discards theINITIAL UE message from a CN node if the Iuinterface is in the reset state.

When the switch is turned off, the RNC handles theINITIAL UE message from a CN node if the Iuinterface is in the reset state.

3)RNC_RBRECFG_DRD_FAIL_ROLLBACK_SWITCH(RB Reconfiguration DRD Rollback Switch)

When the switch is turned on, the RNC supportsrollback caused by failed directed retry decisions(DRDs) of RB reconfiguration.

When the switch is turned off, the RNC does notsupport rollback caused by failed DRDs of RBreconfiguration.

4) RNC_CS_QUERY_UE_IMEI_SWITCH (CS IMEIRequest Switch)




http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-mml/set-uuestatetrans.html








http://localhost/var/www/apps/conversion/current/tmp/RNCParaHtml/mbsc/m-mml/set-urrctrlswitch.html
















WCDMA RAN




7-2

Parameter ID NE MML Command Description

When the switch is turned on, the RNC, rather thanthe CN, sends an IDENTITY REQUEST message toobtain the IMEI of a UE.when the switch is turned on,

it is need to ensure whether the MSC will check thesecquence number or not. If yes, the switch SETUCORRMPARA : ReservedSwitch0 =RESERVED_SWITCH_0_BIT29 -1 also should betruned on. Otherwise, the CS traffic will be failed.

When the switch is turned off, the RNC does not sendan IDENTITY REQUEST message to obtain the IMEIof a UE.

5) RNC_PS_QUERY_UE_IMEI_SWITCH (PS IMEIRequest Switch)

When the switch is turned on, the RNC, rather than

the CN, sends an IDENTITY REQUEST message toobtain the IMEI of a UE.

When the switch is turned off, the RNC does not sendan IDENTITY REQUEST message to obtain the IMEIof a UE.

6) FACH_DTCH_CONGEST_P2D (P2D Switch for Congested FACH or DTCH)

When the switch is turned on, UEs using PS servicestrigger the CELL_PCH-to-CELL_DCH procedure(P2D procedure for short) on a congested FACH or DTCH.

When the switch is turned off, UEs using PS servicesdo not trigger the P2D procedure on a congestedFACH or DTCH.

7)RNC_RBSETUP_DRD_FAIL_ROLLBACK_SWITCH(RB Establishment DRD Rollback Switch)

When the switch is turned on, the RNC supportsrollback caused by failed DRDs of RB establishment.

When the switch is turned off, the RNC does notsupport rollback caused by failed DRDs of RBestablishment.

8) RNC_FD_SCRI_FORCE_REL_SWITCH(Signaling Connection Release Switch for UEsSupporting Fast Dormancy)

When the switch is turned on, if the RNC receives aSIGNALING CONNECTION RELEASE INDICATIONfrom UE with the cause of "UE Requested PS Datasession end", the RNC triggers the state transition for the UE. Otherwise, the RNC releases the signalingconnection.

When the switch is turned off, if the RNC receives aSIGNALING CONNECTION RELEASE INDICATIONfrom UE, the RNC triggers the state transition for the

UE.



WCDMA RAN




7-3

Parameter ID NE MML Command Description

9) USRPLN_PRORATION_SHARED_ALO(Algorithm Switch for Inter-Subrack Load Sharing onthe User Plane)

When the switch is turned on, load sharing can beperformed based on the ratio of available user planeresources to total user plane resources in a subrack.

When the switch is turned off, load sharing cannot beperformed based on the ratio of available user planeresources to total user plane resources in a subrack.

10) FP_IUUP_TRACE_SWITCH (Switch for TracingUEs Failing in FP Synchronization)

When the switch is turned on, UEs using FP or Iu UPcan be traced in terms of data streams.

When the switch is turned off, UEs using FP or Iu UPcannot be traced in terms of data streams.

GUI Value Range: LOAD_IRAT_HO_RNC_FILL_TL,SEND_IDT_JUDGE_IU_RESET,RNC_RBRECFG_DRD_FAIL_ROLLBACK_SWITCH, RNC_CS_QUERY_UE_IMEI_SWITCH,RNC_PS_QUERY_UE_IMEI_SWITCH,FACH_DTCH_CONGEST_P2D,RNC_RBSETUP_DRD_FAIL_ROLLBACK_SWITCH,RNC_FD_SCRI_FORCE_REL_SWITCH,USRPLN_PRORATION_SHARED_ALO,FP_IUUP_TRACE_SWITCH

Actual Value Range: This parameter is set to 0 or 1according to the related domains.

Unit: None

Default Value: None



WCDMA RAN

Enhanced Fast Dormancy 8 Counters



8-1

8 Counters

There are no specific counters associated with this feature.



WCDMA RAN

Enhanced Fast Dormancy 9 Glossary



9-1

9 Glossary

For the acronyms, abbreviations, terms, and definitions, see the Glossary .

http://localhost/var/www/apps/conversion/Local%20Settings/Temp/Local%20Settings/w53707/Local%20Settings/Temp/notesBAAA25/Glossary.htm






WCDMA RAN

Enhanced Fast Dormancy 10 Reference Documents

Issue 03 (2011 12 30) Huawei Proprietary and Confidential 10 1

10 Reference Documents

[1] State Transition Feature Parameter Description

[2] 3GPP TS 25.331

[3] 3GPP TS 23.003

http://localhost/var/www/apps/conversion/Local%20Settings/Temp/Local%20Settings/w53707/Local%20Settings/Temp/notesBAAA25/State%20Transition.htm

