UMTS User Experience Management Solution Guide(RAN16.0_01)

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WCDMA RAN

UMTS User Experience Management

Solution Guide

Issue 01

Date 2014-05-15

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright Huawei Technologies Co., Ltd. 2014. 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.

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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

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

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recommendations in this document do not constitute a 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]

Issue 01 (2014-05-15) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

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Contents

1 About This Document..................................................................................................................1

1.1 Overview........................................................................................................................................................................1

1.2 Intended Audience..........................................................................................................................................................1

1.3 Change History...............................................................................................................................................................1

2 SolutionOverview........................................................................................................................3

2.1 Background.....................................................................................................................................................................3

2.2 Application Scenarios.....................................................................................................................................................3

2.3 Overall Solution..............................................................................................................................................................4

3 SolutionApplication Guidelines...............................................................................................7

3.1 Scenario 1: Differentiated User Experience Management for Different Users..............................................................7

3.1.1 ScenarioDescription....................................................................................................................................................7

3.1.2 SolutionPurpose..........................................................................................................................................................8

3.1.3 SolutionDescription....................................................................................................................................................8

3.1.4 Implementation..........................................................................................................................................................10

3.2 Scenario 2: User Experience Improvement of Special Users.......................................................................................10

3.2.1 ScenarioDescription..................................................................................................................................................10

3.2.2 SolutionPurpose........................................................................................................................................................11

3.2.3 SolutionDescription..................................................................................................................................................11

3.2.4 Implementation..........................................................................................................................................................13

3.3 Scenario 3: Differentiated User Experience Management for Different Terminals.....................................................14


3.3.2 SolutionPurpose........................................................................................................................................................143.3.3 SolutionDescription..................................................................................................................................................14

3.3.4 Implementation..........................................................................................................................................................15

3.4 Scenario 4: User Experience Management of Special Terminals................................................................................16


3.4.2 SolutionPurpose........................................................................................................................................................16

3.4.3 SolutionDescription..................................................................................................................................................16

3.4.4 Implementation..........................................................................................................................................................17

4 List of Features Involved in the Solution...............................................................................18

5 Acronyms and Abbreviations...................................................................................................19

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6 Reference Documents.................................................................................................................20

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1About This Document

1.1 Overview

This document describes user experience management solutions provided by Huawei for

different application scenarios in UMTS networks.

The purpose of this document is to help customers choose the appropriate feature or feature

combination for their scenarios. The technical principles, deployment, and activation of each

feature will not be described in this document and will be included in the corresponding feature

parameter description.

1.2 Intended Audience

This document is intended for personnel who:

l Need to understand UMTS user experience

l Work with Huawei products

1.3 Change History

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

RAN16.0 01 (2014-05-15)

This is the first commercial release of RAN16.0.

Compared with Issue 01 (2014-04-22) of RAN15.0, this issue includes the following changes:

l Introduced the KQI assessment system of RAN. For details, see 2.3 Overall Solution.

l Added the inter-RNC platinum user identification and preemption functions. For details,

see 3.2 Scenario 2: User Experience Improvement of Special Users.

l Added the WRFD-150255 Differentiated Service Based on Terminal feature. For details,

see 3.3 Scenario 3: Differentiated User Experience Management for Different

Terminals.

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l Added the WRFD-160103 Terminal Black List feature. For details, see 3.4 Scenario 4:

User Experience Management of Special Terminals.

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2Solution Overview

2.1 Background

Since intelligent terminals become more and more popular and requirements for PS services

increase dramatically, congestion often occurs on UMTS networks and user experience

deteriorates in different degrees. To mitigate network congestion, network optimization can be

performed to improve resource utilization or capacity expansion can be performed, which

improves user experience. In some networks, capacity expansion cannot be performed and

congestion cannot be avoided. Operators propose some requirements for user experience

improvement under network congestion circumstances:

l High-priority subscribers (such as those who pay more fees, high-value gold subscribers,

and VIP subscribers like platinum subscribers) are provided better services and can

preferentially utilize network resources.

l Certain types of terminals (such as those customized for operators) are set to high- or low-

priority UEs to limit resource utilization of low-valued terminals such as data cards, which

may occupy much radio resources if not limited.

l The performance or compatibility problems of some terminals need to be mitigated to

improve user experience.

To meet these requirements, this solution provides the following user experience management

functions: Users are distinguished using the following methods:

lDistinguishing gold, silver, and copper users by QoS parameters of the CN

l Identifying platinum users by IMSI configured on the RNC

l Distinguishing different types of terminals by IMEI TAC

2.2 Application Scenarios

This solution applies to four scenarios:

Differentiated User Experience Management for Different Users

If there are users of different priorities in the networks, for example, gold users with high fees

and high values and copper users with low fees and low values, users of different priorities such

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as gold, silver, and copper users can obtain different service quality and user experience when

network resources are insufficient. Services of gold users are guaranteed preferentially.

User Experience Improvement of Special Users

In heavy-traffic scenarios, for example, gathering, events, and festivals, the traffic volume

increases dramatically, which causes severe congestion of the network and a significant decrease

in the access success rate. In this case, the network access of some special users such as platinum

users needs to be preferentially guaranteed.

Differentiated User Experience Management for Different Terminals

If there are many low-valued terminals such as data cards in networks, which occupy a huge

amount of radio resources but provide limited revenues to operators and they are less sensitive

to user experience, these low-valued terminals can be set to low-priority UEs and some other

terminals can be set to high-priority UEs to control radio resource utilization. Different types of

terminals are granted different priorities so that they are provided with services of different

qualities when network resources are insufficient.

User Experience Management of Special Terminals

User experience of some problematic terminals in networks needs to be improved, for example,

terminals with poor reception performance or terminals with compatibility problems.

2.3 Overall Solution

Figure 2-1shows functions involved in the user experience management solution.

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Figure 2-1User experience management solution

l Delivering parameters over the RANAP (Iu) interface

The CN transfers some QoS parameters to the RNC, including the traffic class, ARP, MBR,

and GBR. The gold, silver, and copper users are distinguished by ARP.

l Experience management (SRNC)

QoS parameter mapping

The SRNC converts QoS parameters from the CN into those used by the RAN, for

example, SPI, SPI Weight, MBR, GBR, and HBR. For details, see QoS Feature

Parameter Description. Gold, silver, and copper users are differentiated by these

parameters. In addition to QoS parameters delivered by the CN, the RAN provides the

IMSI for identifying platinum users.

RRM/TRM algorithm

Parameters for differentiating users are used in wireless algorithms such as the RB

configuration, admission control, load control, flow control algorithms to guarantee

resource utilization of high-priority users during radio resource congestion.

l Delivering NBAP (Iub) and RNSAP (Iur) parameters

The SRNC transfers some parameters to the NodeB over the Iub and Iur interfaces, which

are used by algorithms on the NodeB side.

l Experience management (NodeB)

The scheduling algorithm and flow control algorithm guarantee that high-priority

subscribers preferentially use air interface resources and transport resources.

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l Evaluation of user experience KQIs

RAN16/PRS R14 supports evaluation and visibility of KQIs about the web and video

services. It supports customized visibility of KQIs for user groups distinguished by SPI and

terminal groups distinguished by IMEI TAC. These KQIs are used to monitor the user

experience on live networks. For details, see Service Awareness Feature ParameterDescription.

To support evaluation of user experience KQIs, the following PRS features must be

purchased:

WOFD-091916 UMTS RAN KQI User SPI Customization

WOFD-091917 UMTS RAN KQI Terminal Customization

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3Solution Application Guidelines

3.1 Scenario 1: Differentiated User Experience Managementfor Different Users

3.1.1 Scenario Description

In networks that sometimes experience congestion, there are gold, silver, and copper users, which

are prioritized based on factors such as the paid fees. Gold users have the highest priority and

copper users have the lowest priority. When resources are insufficient, users with different

priorities obtain different network resources. Users with higher priority preferentially obtainservices and are guaranteed better experience.

Resource congestion mainly consists of power resource congestion and transport resource

congestion. Various counters can be used to define different types of network congestion. The

following methods are used for reference only:

l Downlink power

Total TCP usage = VS.MeanTCP (W)/Configured PA Capacity (W) x 100%

Non-HS TCP usage = VS.MeanTCP.NonHS (W)/Configured PA Capacity (W) x 100%

When the total TCP usage is greater than or equal to 80% or the non-HS TCP usage is

greater than or equal to 70%, it is regarded that downlink power congestion occurs.

l Uplink power

Assuming that the target load of the target cell is configured to 75% and the minimum

RTWP of a day is the floor noise, the cells that experience load rises of more than 6 dB are

regarded as having uplink power congestion.

l Downlink Iub transmission

Downlink bandwidth utility during busy hours = Downlink throughput during busy hours

(equal to the sum of throughput of all IP paths VS.IPPATH.IPLAYER.RXBYTES)/

Receive bandwidth RX_BW_CFG (equal to the value of RxBWin the ADD RSCGRP

command)

When the downlink bandwidth utility during busy hours is greater than or equal to 70%, it

is regarded that downlink Iub transmission congestion occurs.

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l Uplink Iub transmission

Uplink bandwidth utility during busy hours = Uplink throughput during busy hours (equal

to the sum of throughput of all IP paths VS.IPPATH.IPLAYER.RXBYTES)/Transmit

bandwidth TX_BW_CFG (equal to the value of TxBWin the ADD RSCGRPcommand)

When the uplink bandwidth utility during busy hours is greater than or equal to 70%, it is

regarded that uplink Iub transmission congestion occurs.

3.1.2 Solution Purpose

In RAN congestion scenarios, operators can provide differentiated services to users with

different priorities. Gold users have the highest priority. They can access the network and utilize

network resources preferentially.

3.1.3 Solution Description

lDistinguishing gold, silver, and copper usersThe RNC distinguishes gold, silver, and copper users by the ARP in the RAB Assignment

Request message sent by the CN. The ARP indicates the priority of a user. For the mapping

between the ARP and the gold, silver, and silver users, see QoS Management Feature

Parameter Description.

l Evaluation of service experience KQIs for gold, silver, and copper users

RAN16.0/PRS R14 supports displaying of KQIs on the PRS for various services based on

SPI group. The KQIs are used for measuring service experience of gold, silver, and copper

users. For details, see Service Awareness Feature Parameter Description.

l Differentiated service experience of gold, silver, and copper users

1. Service admission

The comprehensive user priority is related to QoS parameters such as ARP, THP, andTraffic class, which are used in the pre-emption process triggered by a failure in admission

of RAB resources (power, code resources, CE resources, and Iub transmission resources).

High-priority users can preempt resources of low-priority users.

2. Cell congestion control

The comprehensive user priority is also used for load control of a cell, for example, user

selection during load-based inter-frequency handovers for LDR and user selection during

switchover the BE services to the CCH. High-priority users will be selected with the lowest

probability.

3. Differentiated HSPA services

Based on ARP and other QoS parameters such as THP and Traffic Class, SPI, SPI Weight,

GBR, and HBR can be configured and used in scheduling algorithm and flow control

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algorithm, which ensure that high-priority users take precedence over low-priority users in

the scheduling opportunities and transmission bandwidth so that they can obtain better

HSPA services.

List of Features Involved in the Solution

Table 3-1lists the features involved in the solution of differentiated user experience management

for different users.

Table 3-1Features involved in the solution of differentiated user experience management for

different users

FunctionClassification

FeatureID

Feature Name Introduced In...

ReferenceDocument

Differentiated

service

experience of

gold, silver,

and copper

users

WRFD-01

0505

Queuing and Pre-

Emption

RAN5.0 Load Control Feature

Parameter Description

Differentiated

service

experience of

gold, silver,

and copperusers

WRFD-02

0806

Differentiated Service

Based on SPI Weight

RAN11.0 Differentiated HSPA

Service Feature


Differentiated

service

experience of

gold, silver,

and copper

users

WRFD-15

0233

Differentiated Service

Based on Resource

Reservation

RAN15.0 Differentiated Service

Based on Resource

Reservation Feature


Evaluation of

service

experienceKQIs for gold,

silver, and

copper users

NA Service Experience

Evaluation (UMTS

RAN KQI User SPICustomization)

RAN16.0 Service Awareness

Feature Parameter

Description

Description of Features Involved in the Solution

l WRFD-010505 Queuing and Pre-Emption

This feature provides the function of queuing and preemption, allowing high-priority users

to preempt resources of online low-priority users so that high-priority users can be

successfully admitted.

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l WRFD-020806 Differentiated Service Based on SPI Weight

This feature allows different users to be configured with different SPI weights. High-

priority users are configured with greater SPI weights so that they can preferentially

consume power and transport resources when power and transport resources are congested.

l WRFD-150233 Differentiated Service Based on Resource Reservation

This feature limits power resources to be consumed by users of different priorities.

l Service Experience Evaluation (UMTS RAN KQI User SPI Customization)

This feature implements evaluation of customized KQIs based on SPI.

3.1.4 Implementation

The deployment and activation of each feature or function will not be described in this document

and will be included in the corresponding documents about RAN features.

Pay attention to the following issues when deploying these features:

l WRFD-010505 Queuing and Pre-Emption

There is no requirement for deploying this feature. However, preemption may cause an

increase in the call drop rate.

l WRFD-020806 Differentiated Service Based on SPI Weight

It is recommended that this feature be enabled in power congestion and transmission

resource congestion scenarios. It is used to specify different SPI weights for users of

different priorities by configuring QoS parameters on the CN side.

l WRFD-150233 Differentiated Service Based on Resource Reservation

This feature can be used with the WRFD-020806 Service Based on SPI Weight feature

together. If the downlink power congestion occurs frequently or the congestion is severe,and a specific type of users occupy a high percentage of all users and these users consume

more resources than other users, affecting experience of other users. For example, if there

are too many copper users in a cell, who consume many downlink power resources,

resources that can be used by gold users are affected, leading to poor experience of the gold

users. In this circumstance, you can enable this feature to limit resources that can be used

by a type of users. This feature restricts HSDPA power resources that can be used by low-

valued user groups and reserves downlink power resources for other high-valued user

groups during downlink power congestion so that user experience of users groups with

higher QoS requirements is guaranteed.

l Service Experience Evaluation (UMTS RAN KQI User SPI Customization)

This function requires deployment of the PRS.

3.2 Scenario 2: User Experience Improvement of SpecialUsers

3.2.1 Scenario Description

In general network congestion scenarios, network KPIs such as the access success rate do not

deteriorate much. However, some special scenarios, for example, large gatherings, sports events,

or festivals, the traffic volume increases sharply and the network is severely congested, causing

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a substantial decrease in the access success rate. Some important UEs may fail to access the

network. For example, policemen can hardly make calls and the CS/PS call completion success

rate is lower than 70%. Under this circumstance, you need to ensure that platinum users

preferentially access the network with the QoE quality guaranteed.


This solution provides service experience assurance for certain personnel such as platinum users,

including preferential access to wireless networks during congestion, improving downlink voice

quality of platinum users in weak coverage, and providing higher HSPA service throughput for

platinum users.


Figure 3-1Experience assurance of platinum users

The principles shown by Figure 3-1are as follows:

l Identify and maintain platinum users

Operators run the ADD UPLATINUMIMSIcommand to configure an IMSI list for

platinum users on the RNC and use the RRC Connection Request, Common ID, and NAS

(Non-Access Stratum) messages to maintain the IMSI-to-TMSI mapping relationship table.

If the RNC receives an RRC Connection Request message and the message carries a TMSI/

IMSI identifier, the RNC can identify platinum users by checking the IMSI-to-TMSI

mapping relationship table and label the platinum users. If the message carries a P-TMSI,

the RNC identifies this UE as a non-platinum user.

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l In the RRC setup stage, platinum users take precedence over other users.

During the flow control in the RRC setup stage, the priority of all services for platinum

users is increased to the same level as conversational services so that they can access the

network preferentially (in all services, excluding emergent calls, the priority of

conversational services is the highest). In access process, platinum users canunconditionally preempt resources of other users to obtain a higher RRC connection setup

success rate.

l In the RAB setup stage, platinum users take precedence over other users.

In access process, platinum users can unconditionally preempt resources of other users to

obtain a higher RAB connection setup success rate.

l Quality assurance when services are ongoing.

The major measures are as follows:

Increase the maximum transmit power of a single downlink voice link by 3 dB to

improve voice quality of platinum users in weak downlink coverage areas.

Set the initial SPI weight of platinum users to 100% so that platinum users can be

preferentially scheduled when SPI weights are configured to different values for

different types of users. If the SPI weight for other users (for example: gold users) is

also set to 100%, these users have the same scheduling priority as platinum users.

For details, see Platinum User Prioritizing Feature Parameter Description.


Table 3-2lists the features involved in the solution of providing differentiated experience for

special users.

Table 3-2Features involved in the solution of providing differentiated experience for special

users


FeatureID


Reference Document

Platinum users'

identification and

preferential RRC

setup and RAB

setup as well as

platinum users'

service quality

assurance during

the service

WRFD-1

50204

Platinum User

Prioritizing

RAN15.0 Platinum User Prioritizing

Feature Parameter

Description

Identification of

platinum users

NA Identification

of platinum

users between

RNCs


Feature Parameter

Description

Preferential RAB

setup of platinum

users

NA Platinum user

preemption

enhancement


Feature Parameter

Description

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The WRFD-150204 Platinum User Prioritizing feature is used to guarantee access of platinumusers and provide QoE assurance to a certain degree in congestion scenarios.

l WRFD-150204 Platinum User Prioritizing

This feature identifies platinum users and ensures preferential RRC setup and RAB setup.

It also ensures platinum users' service quality when the services are ongoing.

l Identification of platinum users between RNCs

This feature identifies platinum users in inter-RNC scenarios (cross-Iur handovers and

relocation scenarios).

l Platinum user preemption enhancement

This feature enables platinum users to access cells that support more advanced technologies.For example, when the number of HSDPA users reaches the maximum value, platinum

users can preempt resources of online HSDPA users so that the platinum users can be carried

on HSDPA channels.


For details, seePlatinum User Prioritizing Feature Parameter Description.

Suggestions on deployment of different features and functions are as follows:

l WRFD-150204 Platinum User Prioritizing

This feature must be enabled, because it provides basic functions.l Identification of platinum users between RNCs

It is recommended that this function be enabled when there are cross-Iur handovers or

relocations.

l Platinum user preemption enhancement

It is recommended that this function be enabled.

l If both the WRFD-020806 Differentiated Service Based on SPI Weight and WRFD-150204

Platinum User Prioritizing features are enabled, the QoS-related rates of platinum users

such as GBR and HBR are set based on the ARP of these users. If a platinum user is also

a copper user, the admission and scheduling algorithms use GBR and HBR configured for

the copper user, whereas the RRC admission and RAB admission processes use parametersconfigured for the platinum user, including the SPI weight.

l If the WRFD-150233 Differentiated Service Based on Resource Reservation feature is

enabled, platinum users are not subject to the restriction on reserved resources.

l If the WRFD-150255 Differentiated Service Based on Terminal feature is enabled, the SPI

weight configured based on terminals does not take effect for platinum users. Instead, the

SPI weight specified by the WRFD-150204 Platinum User Prioritizing feature for platinum

users takes effect.

l If the WRFD-140205 Voice Experience Improvement for Weak Reception UEs feature is

enabled, the downlink transmit power of voice services is the value of the formula: max

{The 3 dB increase in the transmit power of platinum users, The increase in the transmit

power of special users (dB)}

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3.3 Scenario 3: Differentiated User Experience Management

for Different Terminals3.3.1 Scenario Description

Operators want to provide HSPA services of different quality for different types of terminals

(distinguished by IMEI TAC). The scenario is divided into the following types:

l Limiting resources that can be used by low-valued terminals: In congested networks (for

definitions of network congestion, see 3.1.1 Scenario Description), there are many low-

valued terminals such as data cards, which occupy a huge amount of radio resources but

provide limited revenues to operators and they are less sensitive to user experience. These

low-valued terminals can be set to low-priority UEs and some other terminals can be set

to high-priority UEs to control radio resource utilization.

l Fixing the priorities of special terminals: The UEs that use some types of terminals (such

as terminals customized for an operator) are always set to high- or low-priority users so

that differentiated HSPA services are provided when the network is congested. For

definitions of network congestion, see 3.1.1 Scenario Description.


This solution is used to evaluate service experience of different types of terminals and to provide

differentiated HSPA services during congestion.

3.3.3 Solution Descriptionl Evaluation of service experience KQIs for different types of terminals

RAN16.0/PRS R14 supports displaying of KQIs on the PRS for various services based on

IMEI TAC. The KQIs are used for measuring service experience of gold, silver, and copper

users. For details, see Service Awareness Feature Parameter Description.

l Service experience differentiation for different types of terminals

If the operator wants to provide differentiated services for all UEs that use certain types of

terminals (distinguished by IMEI TAC), the following measures can be taken: Enable

WRFD-150255 Differentiated Service Based on Terminal, configure different types of

terminals in different terminal groups based on their IMEI_TACs, and set different SPIweights of BE services for UEs in different terminal groups. With these measures, the HSPA

resource scheduling algorithm will adjust the opportunities for different types of terminals

to obtain resources, thereby changing the quality of services provided for the UEs.

If the operator wants to improve experience of a certain type of terminals with the same

IMEI TAC (for example, gold users), the Open QoS platform can be used to provide QoS

customization. The Open QoS platform is provided through the SmartCare SQI-Data

professional service.


Table 3-3lists the features involved in the solution of differentiated user experience management

for different terminals.

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Table 3-3Features involved in the solution of differentiated user experience management for

different terminals


Feature ID Feature Name IntroducedIn...

ReferenceDocument

Service

experience

differentiation

for different

types of

terminals

WRFD-1502

55

Differentiated

Service Based on

SPI Weight

RAN15.0 Differentiated HSPA

Service Feature

Parameter

Description

Service

experience

differentiation

for different

types of

terminals

N/A Open QoS

platform

RAN15.0 Service Awareness-

based QoS

Management Feature

Parameter

Description

Evaluation of

service

experience

KQIs for

different types

of terminals

N/A Service

Experience

Evaluation

(UMTS RAN

KQI Terminal

Customization)

RAN16.0 Service Awareness

Feature Parameter

Description


l WRFD-150255 Differentiated Service Based on Terminal

It is used to set different SPI weights for different types of terminals and provide

differentiated HSPA services.

l Open QoS Platform

It supports fast QoS customization. This platform supports differentiated QoS

customization based on the user priority, terminal type, and data service type to improve

service experience.

This function is provided by the SmartCare SQI-Data professional service.


l The Open QoS platform is mainly used for SmartCare SQI-Data professional services. It

provides comprehensive QoS differentiation based on user priority, terminal model, and

data service type. If only QoS differentiation based on terminal model is required, you only

need to enable the WRFD-150255 Differentiated Service Based on Terminal feature.

l When both WRFD-150255 Differentiated Service Based on Terminal/Open QoS Platform

and WRFD-020806 Differentiated Service Based on SPI Weight are enabled, run the SET

UQOSALGOPARAcommand and set SPI weights for different terminal groups, which

are distinguished by Devicegroupor for different users (gold, silver, and copper).

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3.4 Scenario 4: User Experience Management of Special

Terminals3.4.1 Scenario Description

In existing networks, some certain types of terminals have performance problems. For example,

these terminals may experience call setup failures or call drops due to weak reception

capabilities or incompatibility with some features that have been activated.


This solution improves performance or solves problems of special terminals with weak reception

capabilities and identifies and blacklists terminals with compatibility problems to provide betterexperience for these terminals.


l Voice Experience Improvement for Weak Reception UEs

For CS voice services, WRFD-140205 Voice Service Experience Improvement for Weak

Reception UEs enables the RNC to perform a new International Mobile Station Equipment

Identity (IMEI) acquisition procedure. During this procedure, the RNC detects the IMEI

Type Allocation Code (TAC) and determines the UE type. If the UE is a weak reception

UE, the RNC configures dedicated power control and handover parameters for the UE.

Based on the parameter settings, the weak reception UE obtains a high downlink power

control threshold in weak coverage areas and performs handovers at the designated

threshold. For details, see Voice Service Experience Improvement for Weak Reception UEs

Feature Parameter Description.

l Terminal Black List

The radio network controller (RNC) obtains the list of UEs that are involved in feature

incompatibilities based on actual conditions on the live network. This is known as the UE

blacklist. The UE blacklist is preconfigured on the RNC through parameter configuration,

and the IMEI TACs of these UEs as well as incompatible features are listed. When a UE

accesses the network, the RNC obtains the IMEI from the IMEI identification procedure.

Alternatively, the RNC simulates the core network (CN) mechanism and sends an

IDENTITY REQUEST message to the UE, which then reports its IMEI to the RNC. If thereported IMEI TAC is the same as one in the UE blacklist, the incompatible features will

not take effect for the UE. Consequently, issues related to UE incompatibility do not occur,

and service setup failures or call drops are prevented.


Table 3-4lists the features involved in the solution of providing differentiated experience for

special terminals.

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Table 3-4Features involved in the solution of providing differentiated experience for special

terminals

FunctionClassificati

on

Feature

ID


Reference Document

Voice

Experience

Improvemen

t for Weak

Reception

UEs

WRF

D-14

0205

Voice Experience

Improvement for Weak

Reception UEs

RAN14.0 Voice Service Experience

Improvement for Weak

Reception UEs Feature


Terminal

Black List

WRF

D-16

0103

Terminal Black List RAN16.0 Terminal Black List Feature



l WRFD-140205 Voice Experience Improvement for Weak Reception UEs

If some terminals have weak reception capabilities, consider using this feature to increase

the maximum downlink transmit power for voice services and reduce the call drop rate.

l WRFD-160103 Terminal Black List

In commercial networks, some terminals may be not able to support some features that

have been activated due to design or hardware problems of the terminals. In this

circumstance, it is recommended that this feature be enabled to identify problematic

terminals according to the terminal black list and prohibit these terminals from using

specific features. This mechanism reduces impacts caused by special terminals'

incompatibility with some features.


The deployment and activation of each feature or function will not be described in this document

and will be included in the corresponding documents about RAN features.

The Voice Experience Improvement for Weak Reception UEs feature and Terminal Black List

feature can be enabled at the same time.

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4List of Features Involved in the SolutionFeature ID Feature Name Introduce

d In...Reference Document

WRFD-010505 Queuing and Pre-

Emption

RAN5.0 Load Control Feature Parameter

Description

WRFD-020806 Differentiated

Service Based on SPI

Weight

RAN11.0 Differentiated HSPA Service

Feature Parameter Description


Service Based on

Resource

Reservation

RAN15.0 Differentiated Service Based on

Resource Reservation Feature


WRFD-150204 Platinum User

Prioritizing

RAN15.0 Platinum User Prioritizing Feature


WRFD-140205 Voice Experience

Improvement for

Weak Reception UEs

RAN14.0 Voice Service Experience

Improvement for Weak Reception

UEs Feature Parameter Description


Service Based on

Terminal

RAN15.0 Differentiated HSPA Service

Feature Parameter Description

WRFD-160103 Terminal Black List RAN16.0 Terminal Black List Feature


WCDMA RAN

UMTS User Experience Management Solution Guide 4 List of Features Involved in the Solution



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5Acronyms and AbbreviationsAcronym andAbbreviation

Full Name

QoE Quality of experience

TCP Transmitted Carrier Power

SPI Scheduling Priority Indicator

WCDMA RAN

UMTS User Experience Management Solution Guide 5 Acronyms and Abbreviations



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6Reference Documents1. QoS Management Feature Parameter Description

2. Load Control Feature Parameter Description

3. Differentiated HSPA Service Feature Parameter Description

4. Differentiated Service Based on Resource Reservation Feature Parameter Description

5. Platinum User Prioritizing Feature Parameter Description

6. Voice Service Experience Improvement for Weak Reception UEs Feature Parameter

Description

7. Terminal Black List Feature Parameter Description

WCDMA RAN

UMTS User Experience Management Solution Guide 6 Reference Documents

Issue 01 (2014 05 15) Huawei Proprietary and Confidential 20