ce resource management(ran13.0_02)

7/27/2019 CE Resource Management(RAN13.0_02)

http://slidepdf.com/reader/full/ce-resource-managementran13002 1/20

CE Resource ManagementRAN13.0

Feature Parameter Description

Issue 02

Date 2012-05-30

HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2012. 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

CE Resource Management Contents

Issue 02 (2012-05-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd

ii

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

3.1 Basic Concepts ............................................................................................................................. 3-1 3.1.1 CE ......................................................................................................................................... 3-1 3.1.2 CE Sharing in a Resource Group ......................................................................................... 3-1 3.1.3 NodeB CE Capacity Specifications ...................................................................................... 3-2

3.2 Rules for Calculating CE Consumption ......................................................................................... 3-2 3.3 Admission and Congestion Control Based on CE Resources ...................................................... 3-6

3.3.1 Admission Control ................................................................................................................. 3-7 3.3.2 Basic Congestion Control ..................................................................................................... 3-7

3.4 Admission-CE-based Dynamic TTI Adjustment ............................................................................ 3-8 3.5 Dynamic CE Resource Management for HSUPA ......................................................................... 3-8 3.6 License CE Capacity Alarm ........................................................................................................... 3-8

4 Parameters.................................................................................................................................. 4-1 5 Counters...................................................................................................................................... 5-1 6 Glossary ...................................................................................................................................... 6-1 7 Reference Documents ............................................................................................................. 7-1



WCDMA RAN

CE Resource Management 1 Introduction



1-1

1 Introduction

1.1 Scope

This document describes the basic concepts related to channel element (CE) resources and basicmethods of managing and controlling CE resources.

1.2 Intended Audience

This document is intended for:

Personnel who are familiar with WCDMA basics

Personnel who need to understand CE resource management

Personnel who work with Huawei products

1.3 Change History

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

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

Feature change: refers to the change in the CE resource management feature.

Editorial change: refers to the change in wording or the addition of the information that was notdescribed in the earlier version.

Document Issues

The document issues are as follows:

02 (2012-05-30)

01 (2011-12-30)

02 (2012-05-30)

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

Compared with issue 01 (2011-12-30) of RAN13.0, this issue has the following changes.

Change Type Change Description Parameter Change

Feature change None. None.

Editorial change The description about CE consumption of common

channels, R99 and HSUPA services is revised. For details, see 3.2 "Rules for Calculating CEConsumption."

None.

01 (2011-12-30)

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

This is a new document.



WCDMA RAN

CE Resource Management 2 Overview



2-1

2 Overview

CE resources are a type of NodeB hard resource. The number of CEs supported by a NodeB indicatesthe channel demodulation capabilities of the NodeB. The more CEs a NodeB supports, the more

powerful the channel demodulation and service processing capabilities.

Services at different rates require different numbers of CEs to ensure proper channel demodulation.

In a RAN, CE resources are managed by both the RNC and NodeB, as shown in Figure 2-1. The NodeBreports its CE capacity to the RNC. The RNC determines whether to admit a new service based on thenumber of CEs that need to be consumed and controls CE resources during CE congestion. Thisensures the proper use of CE resources. The NodeB dynamically manages CE resources and rapidlyadjusts the number of CEs that can be consumed based on the actual service rate. This increases CEresource usage.

Figure 2-1 CE resource management

A proper use of CE resources increases the number of UEs that can be admitted and improves theservice quality of the admitted UEs.



WCDMA RAN

CE Resource Management 3 Technical Description



3-1

3 Technical Description

3.1 Basic Concepts

3.1.1 CE

CE is a basic unit that measures the channel demodulation capabilities of a NodeB. CEs are classifiedinto uplink (UL) CEs and downlink (DL) CEs.

One UL CE needs to be consumed by a UL 12.2 kbit/s voice service (SF = 64) plus 3.4 kbit/s signaling.

One DL CE needs to be consumed by a DL 12.2 kbit/s voice service (SF = 128) plus 3.4 kbit/ssignaling.

If only 3.4 kbit/s signaling traffic is carried on a DCH or HSPA channel, one CE still needs to beconsumed. The number of CEs that need to be consumed by services of other types can be calculatedby analogy.

The number of UL and DL CEs supported by a NodeB is determined by the NodeB hardware capabilitiesand the licensed CE capacity. The number of UL and DL CEs supported by the NodeB hardware iscalled the physical CE capacity. The licensed CE capacity may differ from the physical CE capacity. Thesmaller determines the number of CEs that can be used by an operator.

CE is a concept of the NodeB side. On the RNC side, it is called NodeB credit. The RNC performsadmission and congestion control based on the NodeB credit. In the UL, the number of NodeB creditresources is twice that of CEs. In the DL, the number of NodeB credit resources equals that of CEs.

3.1.2 CE Sharing in a Resource Group

To facilitate baseband resource management, NodeB baseband resources fall into UL and DL resource

groups. The UL and DL resource groups are independent with each other. Figure 3-1 describes the ULand DL resource groups.

Figure 3-1 UL and DL resource groups

UL resource

group 1

Cell uplink

Cell uplink

UL resource

group 2

Cell uplink

Cell uplink

DL resource

group 1

Cell downlink

DL resource

group 2

Cell downlink

NodeB

baseband

board1baseband

board2

baseband

board3

Cell downlink Cell downlink



WCDMA RAN




3-2

UL Resource Group

A UL resource group is a UL resource pool shared on a per-channel basis. As shown in Figure 3-1, morethan one cell can be setup in one UL resource group, One UL resource group can have multiplebaseband boards, but one board can belong to only one UL resource group. CE resources in one UL

resource group can be shared by baseband boards. This means that UEs in a cell in a UL resourcegroup can set up services on any board in the group. The physical CE capacity of a UL resource group isthe total CE capacity of baseband boards in the group.

DL Resource Group

Different from a UL resource group, a DL resource group is shared on a per-cell basis. As shown inFigure 3-1, resources in a DL resource group are allocated to each baseband board based on cells; onebaseband board can be configured only for one downlink resource group. DL CE resources for UEs inthe same cell can be provided by any baseband board in the DL resource group.

3.1.3 NodeB CE Capacity Specifications

Different baseband boards of a NodeB have their own CE capacity specifications. For detailed CEcapacity specifications supported by each type of baseband board, see the BBU3900 HardwareDescription in the WCDMA NodeB Product Documentation.

CE capacity here refers to the number of CEs that can be consumed by UL and DL R99 services andHSUPA services. It does not include CE resources reserved by the NodeB for common and HSDPAchannels.

3.2 Rules for Calculating CE Consumption

Introduction

The RNC determines the number of CEs required for a service based on the SF that matches theservice rate.

When an RAB connection is set up or released for a service, CE resources must be allocated or takenback and the number of CEs must be deducted or added accordingly. Different rules for calculating CEresource consumption apply to channels or services of different types, as shown in Figure 3-2.

Figure 3-2 Rules for calculating CE resource consumption

CE resources reserved by the NodeB for common and HSDPA channels are shown in gray. CEresources that need to be consumed by R99 and HSUPA services are shown in orange.



WCDMA RAN




3-3

CE Consumption of Common Channels

The NodeB reserves some CE resources for the uplink and downlink common channel. If the usage of CE resources for the common channel does not exceed the reserved CE resources, licensed CEresources are not required. If the usage exceeds the reserved CE resources, some licensed CE

resources are consumed for the excess part.

CE Consumption of HSDPA Channels

Similarly, the NodeB reserves CE resources for the high-speed downlink shared channel (HS-DSCH)and the related control channels if HSDPA is used. These CEs also do not need to be considered in thecalculation of CE consumption.

Note that the signaling of an HSDPA UE that is not performing an R99 service occupies one DCH andneeds to consume one DL CE. If the SRB over HSDPA function is enabled, the signaling of an HSDPAservice does not consume additional CE resources. For an HSDPA UE that is performing an R99 service,its signaling and the R99 service occupy the same DCH. Therefore, only the CEs consumed on R99traffic channels need to be calculated.

CE Consumption of an R99 Service

For an R99 service, the RNC determines the number of CEs and NodeB credit resources that need to beconsumed based on the SF that matches the maximum bit rate (MBR) of the service.

Table 3-1 Uplink CE consumption of an R99 service

DirectionRate(kbit/s)

SF 2RX 4RX

Number of CEsConsumed

CorrespondingCredits Consumed



UL 3.4 256 1 2 2 4

13.6 64 1 2 2 4

8 64 1 2 2 4

16 64 1 2 2 4

32 32 1.5 3 2 4

64 16 3 6 3 6

128 8 5 10 5 10

144 8 5 10 5 10

256 4 10 20 10 20

384 4 10 20 10 20

As listed in Table 3-1, the CE consumption at the rate of 3.4 kbit/s or 13.6kbit/s corresponds to the situation in which only

SRBs (without TRBs) are carried during an RRC connection. In other cases, if TRBs are also carried, CEs consumed are

also used for the SRBs that are transmitted at 3.4 kbit/s only.



WCDMA RAN




3-4

Table 3-2 Downlink CE consumption of an R99 service

Direction Rate (kbit/s) SF Number of CEsConsumed


DL 3.4 256 1 1

13.6 128 1 1

8 128 1 1

16 128 1 1

32 64 1 1

64 32 2 2

128 16 4 4

144 16 4 4

256 8 8 8

384 8 8 8

In 4RX scenarios, the downlink CE consumption is not affected.

CE Consumption of an HSUPA Service

For an HSUPA service, the RNC determines the number of CEs and NodeB credit resources that need

to be consumed based on the SF that matches the service rate. The RNC determines the SF based on acertain rate in the following ways:

If the UL enhanced L2 function is disabled and the NodeB indicates in a private information element(IE) that dynamic CE resource management has been enabled in the cell, the RNC calculates the SFbased on the larger of the bit rate of one RLC PDU and the guaranteed bit rate (GBR).

If the UL enhanced L2 function is disabled, the RLC PDU size is fixed. The bit rate of one RLC PDU is determined by theRLC PDU size and transmission time interval (TTI).

If the UL enhanced L2 function is enabled and the NodeB indicates in a private IE that dynamic CEresource management has been enabled in the cell, the RNC calculates the SF based on the larger of the bit rate of the smallest RLC PDU and the GBR.

If the UL enhanced L2 function is enabled, the RLC PDU size is flexible. The bit rate of the smallest RLC PDU isdetermined by the minimum RLC PDU size and the TTI. The minimum RLC PDU size can be specified by theRlcPduMinSizeForUlL2Enhance parameter.

If the NodeB reports that dynamic CE resource management has been disabled, the RNC calculatesthe SF based on the MBR.

If the NodeB does not report whether dynamic CE resource management has been enabled, the RNCcalculates the SF based on the value of the HsupaCeConsumeSelect ion parameter and whether theUL enhanced L2 function is enabled.

− If HsupaCeConsumeSelect ion is set to MBR, the RNC calculates the SF based on the MBR.

− If HsupaCeConsumeSelect ion is set to GBR:

http://localhost/var/www/apps/conversion/tmp/RNCParaHtml/mbsc/m-para/ufrc_rlcpduminsizeforull2enhance.html


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















WCDMA RAN




3-5

a. If the UL enhanced L2 function is disabled, the RNC calculates the SF based on the larger of thebit rate of one RLC PDU and the GBR.

b. If the UL enhanced L2 function is enabled, the RNC calculates the SF based on the larger of thebit rate of the smallest RLC PDU and the GBR.

After determining the SF, the RNC searches the CE consumption mapping listed in the following tablesfor the number of CEs that need to be consumed.

Table 3-3 CE consumption for an HSUPA service (10 ms TTI, SRB over DCH)


SF >minSF

Rate(kbit/s)

SF =minSF

SF 2RX 4RX


CorrespondingCreditsConsumed



UL 32 64 32 1 2 2 4

64 128 16 2 4 2 4

128 256 8 4 8 4 8

608 608 4 8 16 8 16

1280 1280 2SF4 16 32 16 32

1800 1800 2SF2 32 64 32 64

For an HSUPA service, if the SRB over DCH function is enabled, the signaling of the HSUPA service consumes anadditional CE.

As listed in Table 3-3, the rate in the SF = minSF column indicates the maximum typical rate supported by thecorresponding SF when an HSUPA service is admitted at the MBR, and the rate in the SF > minSF column indicates themaximum typical rate supported by the corresponding SF when the HSUPA service is admitted at the max(one RLCPDU bit rate, GBR). For example, if an HSUPA service is admitted at the MBR, the maximum typical rate supported bySF4 is 608 kbit/s.

If a rate is not listed in the preceding table, the number of CEs consumed corresponds to the larger rate specified in thetable. For example, in 2RX scenarios, if an HSUPA service is admitted at the MBR of 384 kbit/s, the HSUPA servicematches SF4 and consumes 8 CEs and 16 credit resources, which corresponds to the MBR of 608 kbit/s.

Table 3-4 CE consumption for an HSUPA service (2 ms TTI, SRB over DCH)

DirectionRate

(kbit/s)SF >minSF

Rate

(kbit/s)SF =minSF

SF 2RX 4RX





UL 608 608 4 8 16 8 16

1280 1280 2SF4 16 32 16 32

2720 2720 2SF2 32 64 32 64



WCDMA RAN




3-6

Table 3-5 CE consumption for an HSUPA service (10 ms TTI, SRB over HSUPA)


SF >

minSF

Rate(kbit/s)

SF =

minSF

SF 2RX 4RX

Number of

CEsConsumed

Corresponding

CreditsConsumed

Number of

CEsConsumed

Corresponding

CreditsConsumed

UL 16 64 32 1 2 2 4

32 128 16 2 4 2 4

128 256 8 4 8 4 8

608 608 4 8 16 8 16

1280 1280 2SF4 16 32 16 32

1800 1800 2SF2 32 64 32 64

Table 3-6 CE consumption for an HSUPA service (2 ms TTI, SRB over HSUPA)

Direction Rate (kbit/s)

SF > minSF

Rate(kbit/s)

SF =minSF

SF 2RX 4RX





UL 608 608 4 8 16 8 16

1280 1280 2SF4 16 32 16 32

2720 2720 2SF2 32 64 32 64

5760 5760 2SF2+2SF4 48 96 48 96

The CE consumption rules in Table 3-3, Table 3-4, Table 3-5 and Table 3-6 are only applicable to WBBPb and WBBPd in3900 serial base station.

Examples of CE Consumption

UE A, which performs a UL 64 kbit/s and DL 384 kbit/s service on the DCH, consumes three UL CEs andeight DL CEs.

UE B, which performs a UL 64 kbit/s and DL 1024 kbit/s service on the DCH and HS-DSCH respectively,consumes three UL CEs and one DL CE if the DL signaling radio bearer (SRB) is carried on the DCH.

UE C, which performs a UL 608 kbit/s and DL 1024 kbit/s service on the E-DCH and HS-DSCHrespectively and at the same time performs an AMR speech service, consumes nine UL CEs and one DLCE.

3.3 Admission and Congestion Control Based on CE Resources

Because CE resources are limited, the RNC needs to perform admission and congestion control basedon CE resources. UL and DL CE resources undergo separate admission and congestion control.



WCDMA RAN




3-7

3.3.1 Admission Control

The RNC admits a service based on NodeB credit resources (called CE resources on the NodeB side). If the admission fails, preemption and queuing will be triggered.

Call Admission

CE resources to be consumed by common channels and HSDPA services are reserved in advance.Therefore, UEs requesting common or HSDPA channels do not need to be admitted based on CEresources.

Admission control based on NodeB credit is performed on the RNC side. It mainly applies to RRCconnection requests, handover requests and non-HSDPA services.

Admission based on NodeB credit is optional in resource admission control. This function is controlled bythe switch parameters CacSwitch :NODEB_CREDIT_CAC_SWITCH andNBMCacAlgoSwitch :CRD_ADCTRL. It is recommended that these two switch parameters are turnedon. If these two switch parameters are turned off, the correctness of the channel demodulation may not

be guaranteed because of excessive user admission.

For the detailed description of admission control based on NodeB credit, see the Call Admission Control Feature Parameter Description.

Preemption and Queuing Following a Failed Admission

If an admission based on NodeB credit resources fails, preemption and queuing based on NodeB creditresources will be triggered.

Preemption based on NodeB credit resources is similar to preemption based on other resources. TheRNC releases the NodeB credit resources occupied by one or more low-priority UEs until the totalreleased NodeB credit resources meet the requirement for the new UE.

If the preemption fails, queuing is implemented to increase the access success rate of the new UE.

For the detailed description of preemption and queuing, see the Load Control Feature Parameter Description.

3.3.2 Basic Congestion Control

When the usage of NodeB credit resources in a cell exceeds the threshold for triggering basiccongestion, the cell enters the basic congestion state. In this case, load reshuffling (LDR) is required toreduce the cell load and increase the access success rate. And the following LDR actions are likely to betaken:

BE rate reduction

QoS renegotiation for uncontrollable real-time services

Inter-RAT handover in the CS domain

Inter-RAT handover in the PS domain

The sequence of these LDR actions can be set by running the ADD UCELLLDR / ADD UNODEBLDRcommand.

For detailed information about LDR triggered by NodeB credit, see the Load Control Feature Parameter Description.

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



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


http://localhost/var/www/apps/conversion/tmp/scratch_9/Call%20Admission%20Control.htm




http://localhost/var/www/apps/conversion/tmp/scratch_9/Load%20Control.htm


















WCDMA RAN




3-8

3.4 Admission-CE-based Dynamic TTI Adjustment

As defined in 3GPP specifications, the minimum SF corresponding to an HSUPA UE with 2 ms TTI isSF4. One HSUPA UE with 2 ms TTI therefore consumes a minimum of eight UL CEs. Because HSUPAUEs with 2 ms TTI outperform HSUPA UEs with 10 ms TTI, they need to consume more CEs than theHSUPA UEs with 10 ms TTI. If HSUPA UEs with 2 ms TTI dominate a cell, fewer UEs can be admitted tothe cell.

To prevent this problem, Huawei introduced Admission-CE-based dynamic TTI adjustment. With thisfunction, when the NodeB credit resources are insufficient, the 2 ms TTI is switched to the 10 ms TTI toallow more UEs to access the network. When the throughput of the 10 ms TTI HSUPA UE reaches acertain threshold, the 10 ms TTI needs to be switched to 2 ms TTI to achieve higher peak rates.

For the detailed description of this function, see the HSUPA TTI Selection Feature Parameter Description.

3.5 Dynamic CE Resource Management for HSUPA

Although HSUPA improves user experience and increases UL throughput, it greatly increases theconsumption of CE resources due to the use of hybrid automatic repeat request (HARQ) and support for soft handovers. If CE resources are allocated fixedly based on the MBR when radio links are being setup, CE resources will not be taken back even if the actual service rate is much lower than the MBR.Fixed allocation of CE resources wastes CEs and easily causes a bottleneck in HSUPA performance. Amore energy-saving and efficient allocation method is required.

Dynamic CE resource management for HSUPA services was therefore introduced. With the dynamicallocation, the NodeB performs initial CE allocation based on the GBR of a UE. Then the NodeBperiodically adjusts CE resources allocated to UEs based on information such as the user priority andactual rate.

For the detailed description of dynamic CE resource management, see the HSUPA Feature Parameter

Description.

3.6 License CE Capacity Alarm

When NodeB CE consumption exceeds a specified threshold of the license CE capacity for a specifiedperiod, the NodeB reports the alarm ALM-26812 System Dynamic Traffic Exceeding Licensed Limit).

This alarm is cleared when NodeB CE consumption stays below a specified threshold of the license CEcapacity, for example, 90% for a specified period. To configure the CE consumption thresholds and theduration, run the NodeB command SET LICENSEALMTHD.

http://localhost/var/www/apps/conversion/tmp/scratch_9/HSUPA%20TTI%20selection.htm




http://localhost/var/www/apps/conversion/tmp/scratch_9/HSUPA.htm










WCDMA RAN

CE Resource Management 4 Parameters



4-1

4 Parameters

Table 4-1 Parameter description

Parameter ID NE MMLCommand FeatureID FeatureName Description

CacSwitch

BSC6900 SETUCACALGOSWITCH(Optional)

WRFD-020101

AdmissionControl

Meaning:The parameter values are described asfollows:

NODEB_CREDIT_CAC_SWITCH: The systemperforms CAC based on the usage state of NodeBcredit. When the NodeB's credit is not enough, thesystem rejects new access requests.

GUI ValueRange:NODEB_CREDIT_CAC_SWITCH(NodeB

Credit CAC Switch) Actual ValueRange:NODEB_CREDIT_CAC_SWITCH

Unit:None

Default Value:None

HsupaCeConsumeSelection

BSC6900 ADDUNODEBALGOPARA(Optional)

MODUNODEBALGOPARA(Optional)

WRFD-020101

AdmissionControl

Meaning:When the dynamic CE algorithm onNodeB is applied, the CE consumption of HSUPAUE is based on the GBR. When the dynamic CEalgorithm on NodeB is not applied, the CE

consumption of HSUPA UE is based on the MBR.If the CE consumption of HSUPA UE is based onthe GBR, the CE LDR will not select HSUPA usersto do data rate reduction. If the CE consumption of HSUPA UE is based on the MBR,the CE LDR willselect HSUPA users to do data rate reduction oncondition that the HSUPA DCCC switch is ON.

GUI Value Range:MBR, GBR

Actual Value Range:MBR, GBR

Unit:None

Default Value:MBR

NBMCacAlgoSwitch

BSC6900 ADDUCELLALGOSWITCH(Optional)

MODUCELLALGOSWITCH(Optional)

WRFD-020101

WRFD-020102

AdmissionControl

LoadMeasurement

Meaning:The above values of the algorithmsrepresent the following information:

CRD_ADCTRL: Control Cell Credit admissioncontrol algorithm. Only whenNODEB_CREDIT_CAC_SWITCH which is set bythe SET UCACALGOSWITCH command and thisswitch are on,the Cell Credit admission controlalgorithm is valid.

HSDPA_UU_ADCTRL: Control HSDPA UULoad admission control algorithm. This swtich




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









http://localhost/var/www/apps/conversion/tmp/RNCParaHtml/mbsc/m-mml/add-unodebalgopara.html





http://localhost/var/www/apps/conversion/tmp/RNCParaHtml/mbsc/m-mml/mod-unodebalgopara.html








http://localhost/var/www/apps/conversion/tmp/RNCParaHtml/mbsc/m-mml/add-ucellalgoswitch.html





http://localhost/var/www/apps/conversion/tmp/RNCParaHtml/mbsc/m-mml/mod-ucellalgoswitch.html


































WCDMA RAN




4-2

Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

does not work when uplink is beared on HSUPAand downlink is beared on HSDPA.

HSDPA_GBP_MEAS: Control HSDPAHS-DSCH Required Power measurement.

HSDPA_PBR_MEAS: Control HSDPAHS-DSCH Provided Bit Rate measurement.

HSUPA_UU_ADCTRL: Control HSUPA UULoad admission control algorithm. This switchdoes not work when uplink is beared on HSUPAand downlink is beared on HSDPA.

MBMS_UU_ADCTRL: Control MBMS UULoad admission control algorithm.

HSUPA_PBR_MEAS: Control HSUPAProvided Bit Rate measurement.

HSUPA_EDCH_RSEPS_MEAS: ControlHSUPA Provided Received Scheduled EDCHPower Share measurement.

EMC_UU_ADCTRL: Control power admission for emergency user.

RTWP_RESIST_DISTURB: Control algorithmof resisting disturb when RTWP is abnormal.

FACH_UU_ADCTRL: Admission controlswitch for the FACH on the Uu interface. Thisswitch determines whether to admit a user in theRRC state on the CELL_FACH.

1. If this switch is enabled: if the current cell iscongested due to overload, and the users are withRAB connection requests or RRC connectionrequests(except the cause of "Detach","Registration", or "Emergency Call"), the users willbe rejected. Otherwise FACH user admissionprocedure is initiated. A user can access the cell

after the procedure succeeds.

2. If this switch is disabled: FACH user admission procedure is initiated without theconsideration of cell state.

MIMOCELL_LEGACYHSDPA_ADCTRL:Legacy HSDPA admission control algorithm inMIMO cell.

FAST_DORMANCY_ADCTRL: Whether toenable or disable state transition of users in theCELL-DCH state, who are enabled with fastdormancy, to ease FACH congestion in a cell. If this switch is turned off in a cell, state transition of



WCDMA RAN




4-3

Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

such users is disabled. Note that when this switchis turned off in multiple cells under an RNC,

signaling storm may occur. As a result, the CPUusage of the RNC, NodeB, and SGSN increasesgreatly, leading to service setup failure.Parameter withdrawal explanation:The current versionsupports synchronization and delivery of thesetting of this parameter. The RNC, however,does not use this parameter any longer. Later versions will not support this parameter.Therefore, users should not use this parameter. After this parameter is withdrawn, the RNC alwaysperforms cell resource admission on FastDormancy users. If cell resources are insufficient,

Fast Dormancy users cannot enter theCELL_FACH state.

If switches above are selected, thecorresponding algorithms will be enabled;otherwise, disabled.

GUI Value Range:CRD_ADCTRL(Credit Admission Control Algorithm),HSDPA_UU_ADCTRL(HSDPA UU Load Admission Control Algorithm),HSUPA_UU_ADCTRL(HSUPA UU Load Admission Control Algorithm),

MBMS_UU_ADCTRL(MBMS UU Load AdmissionControl Algorithm), HSDPA_GBP_MEAS(HSDPAGBP Meas Algorithm),HSDPA_PBR_MEAS(HSDPA PBR Meas Algorithm), HSUPA_PBR_MEAS(HSUPA PBRMeas Algorithm),HSUPA_EDCH_RSEPS_MEAS(HSUPA EDCHRSEPS Meas Algorithm),EMC_UU_ADCTRL(emergency call power admission), RTWP_RESIST_DISTURB(RTWPResist Disturb Switch),FACH_UU_ADCTRL(FACH power cac switch),MIMOCELL_LEGACYHSDPA_ADCTRL(LegacyHSDPA Admission Control Algorithm in MIMOCell ), FAST_DORMANCY_ADCTRL(FastDormancy User Admission Control Algorithm)

Actual Value Range:CRD_ADCTRL,HSDPA_UU_ADCTRL, HSUPA_UU_ADCTRL,

MBMS_UU_ADCTRL, HSDPA_GBP_MEAS,HSDPA_PBR_MEAS, HSUPA_PBR_MEAS,

HSUPA_EDCH_RSEPS_MEAS,EMC_UU_ADCTRL, RTWP_RESIST_DISTURB,

FACH_UU_ADCTRL,



WCDMA RAN




4-4

Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

MIMOCELL_LEGACYHSDPA_ADCTRL,

FAST_DORMANCY_ADCTRLUnit:None

Default Value:None

RlcPduMinSizeFor UlL2Enhance

BSC6900 SETUFRC(Optional)

WRFD-010695

UL Layer 2Improvement

Meaning:This parameter specifies the minimumRLC PDU size when the UE is in CELL_DCHstate and UL Layer 2 Enhanced is enabled.

GUI Value Range:4~402

Actual Value Range:4~402

Unit:byte

Default Value:42






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













WCDMA RAN

CE Resource Management 5 Counters



5-1

5 Counters

There are no specific counters associated with this feature.



WCDMA RAN

CE Resource Management 6 Glossary



6-1

6 Glossary

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

http://localhost/var/www/apps/conversion/tmp/scratch_9/Glossary.htm






WCDMA RAN

CE Resource Management 7 Reference Documents

Issue 02 (2012-05-30) Huawei Proprietary and Confidential 7-1

7 Reference Documents

[1] 3GPP TS 25.433 "UTRAN Iub interface Node B Application Part (NBAP) signaling"

[2] Load Control Feature Parameter Description

[3] HSUPA Feature Parameter Description





