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AMR-NB&AMR-NB Feature Guide WCDMA RAN

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AMR-NB&AMR-NB Feature

Guide

WCDMA RAN

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 1

AMR-NB&AMR-NB Feature Guide

Version Date Author Reviewer Notes

V5.0 2011-1-20 Huang He NuLi

1. Modify some description ,Add

description of some parameters

2. Add description about the initial AMR

rate selection based on cell load and

the GBR reservation for the AMR

service and relative parameters;

3. Modify the dynamic AMR adaptation

based on uplink and downlink

transmit power according the

optimization of measurement

procedure.

V6.0 2011-7-20 Huang He NuLi No modification, just version change.

V6.1 2012-1-14 Huang He NuLi Change NbDMCfgNote for EvtAbTcpThrd as

7

© 2012 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used

without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to

change without notice.

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 2

TABLE OF CONTENTS

1 Functional Attribute .............................................................................................. 4

2 Overview ................................................................................................................. 4

2.1 Function Introduction ............................................................................................... 4

2.1.1 CS Conversational RAB for AMR-NB Speech ........................................................ 7

2.1.2 WB-AMR Speech Support ....................................................................................... 7

2.1.3 AMR Rate Controlling .............................................................................................. 7

2.1.4 TrFO ......................................................................................................................... 8

3 Technical Description ........................................................................................... 9

3.1 CS Conversational RAB for AMR-NB Speech ........................................................ 9

3.1.1 Implementation Mechanism of CS Conversational RAB for AMR-NB Speech ...... 9

3.1.2 Signaling Flow of AMR Service ............................................................................. 11

3.2 WB-AMR Speech Support ..................................................................................... 12

3.2.1 Implementation Mechanism of AMR-WB Functions ............................................. 12

3.3 AMR Rate Controlling ............................................................................................ 14

3.3.1 Classification of Dynamic AMR Adaptation ........................................................... 14

3.3.2 Dynamic AMR Adaptation Based on Single-Link Transmission Power................ 16

3.3.3 Dynamic Adjustment Triggered by Resource Congestion .................................... 20

3.3.4 Dynamic Adjustment Triggered by Load ............................................................... 20

3.3.5 Initial AMR Rate Selection Based on Cell Load .................................................... 20

3.3.6 GBR Reservation for the AMR service .................................................................. 21

3.4 TrFO Support ......................................................................................................... 22

3.4.1 OoBTC Outband Codec Control ............................................................................ 23

3.4.2 IuUP Initialization ................................................................................................... 24

3.4.3 IuUP Rate Control .................................................................................................. 25

4 Parameters and Configuration........................................................................... 27

4.1 Parameter List of AMR Dynamic Rate Adjustment ............................................... 27

4.2 Configuration of AMR Dynamic Rate Adjustment Parameters ............................. 29

5 Counter and Alarm .............................................................................................. 44

5.1 Counter List ............................................................................................................ 44

5.2 Alarm List ............................................................................................................... 48

6 Glossary ............................................................................................................... 49

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 3

FIGURES

Figure 3-1 Signaling Flow of AMR Service ........................................................................... 11

Figure 3-2 Flow of OoBTC Outband Codec Control ............................................................. 24

Figure 3-3 IuUP Initialization ................................................................................................. 25

Figure 3-4 Flow of IuUP Rate Control ................................................................................... 26

TABLES

Table 2-1 AMR-NB Rate Classification ................................................................................... 5

Table 2-2 AMR-WB Rate Classification .................................................................................. 6

Table 4-1 Parameter List ....................................................................................................... 27

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 4

1 Functional Attribute

System version: [RNC V3.11.10/V4.11.10, OMMR V3.11.10/V4.11.10, Node B V4.11.10,

OMMB V4.11.10]

Attribute: [Optional]

NEs involved:

UE NodeB RNC MSCS MGW SGSN GGSN HLR

√ - √ √ √ - - √

Note:

*-: No NE is involved.

*√: An NE is involved.

Dependency: [None]

Mutual exclusion: [None]

Remarks: [None]

2 Overview

2.1 Function Introduction

The present 3GPP employs narrowband AMR (AMR-NB) and wideband AMR

(AMR-WB). For the AMR-NB, the speech channel bandwidth is limited to 3.7 kHz, and

the sampling frequency is 8,000 Hz. For the AMR-WB, the speech channel bandwidth is

up to 7 kHz, and the sampling frequency is up to 16,000 Hz. The AMR-WB has better

speech quality than the AMR-NB, although the two modes have the same frame length

of 20ms.

AMR is introduced into the 3G system based on the following considerations :

By means of the AMR Control (AMRC), voice rate can be reduced to improve voice

quality. In addition, system load can be effectively lightened. In the case of certain

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 5

radio load, if users want to obtain the optimal subjective feeling of voice quality, the

most suitable AMR is not the maximum rate, but a suitable medium rate. By

weighing load, the AMRC can achieve the following goals:

The AMRC can reduce an AMR when load is heavy. This lightens system load

and improves voice quality.

The AMRC can increase an AMR when load is light. In this way, QoS is greatly

improved.

When uplink coverage is limited, AMR can be reduced to effectively widen uplink

coverage. In initial WCDMA network construction, both uplink coverage and

downlink capacity are limited; therefore, it is especially important to widen uplink

coverage.

The Adaptive Multi-Rate (AMR) is also called the AMR-NB (Narrowband). This service

has three service RBs, and can provide eight speech rates and two mute rates, as shown

in the table:

Table 2-1 AMR-NB Rate Classification

AMR

Codec Mode

Total

Number

of Bits

Sub-flow

1

Sub-flow

2

Sub-flow

3

Codec Mode

AMR 4.75 kbps 95 42 53 0 AMR_4.75

AMR 5.15 kbps 103 49 54 0 AMR_5.15

AMR 5.9 kbps 118 55 63 0 AMR_5.90

AMR 6.7 kbps 134 58 76 0 AMR_6.70

AMR 7.4 kbps 148 61 87 0 AMR_7.40

AMR 7.95 kbps 159 75 84 0 AMR_7.95

AMR 10.2 kbps 204 65 99 40 AMR_10.20

AMR 12.2 kbps 244 81 103 60 AMR_12.20

AMR SID 39 39 0 0 AMR_SID

GSM-EFR SID 43 43 0 0 GSM-EFR SID

*SID (Silence Descriptor)

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 6

AMR-NB voice coding is divided into three sub-flows out of consideration for the

importance of information and error tolerance in voice coding. Each sub-flow requires its

own QoS assurance. Sub-flow 1 is the most important. Sub-flow 2 comes next. Sub-flow

3 is the least important. Sub-flow 1 needs better channel coding at the air interface to

guarantee its accuracy. No data rate is the coding in the case of mute. SID uses this

frame to indicate that current voice is not activated.

AMR-WB is short for Adaptive Multi-Rate Wideband. This service was introduced in 1999

in order to provide better speech quality and speech reproducibility. It can be applied

both in 3G system and GSM system.

Unlike AMR-NB, the AMR-WB has only two service RBs and provides nine speech rates

and one mute rate, as shown in the table:

Table 2-2 AMR-WB Rate Classification

AMR-WB

Codec Mode

Total

Number of

Bits

Sub-flow

1 Sub-flow

2

Sub-flow

3

Codec Mode

1.75 40 40 0 0 AMR-WB_SID*

6.60 132 54 78 0 AMR-WB_6.60

8.85 177 64 113 0 AMR-WB_8.85

12.65 253 72 181 0 AMR-WB_12.65

14.25 285 72 213 0 AMR-WB_14.25

15.85 317 72 245 0 AMR-WB_15.85

18.25 365 72 293 0 AMR-WB_18.25

19.85 397 72 325 0 AMR-WB_19.85

23.05 461 72 389 0 AMR-WB_23.05

23.85 477 72 405 0 AMR-WB_23.85

*SID (Silence Descriptor)

Like the AMR-NB, the AMR-WB sub-flow 1 contains the most important information of

speech, with 12-bit CRC protection added on the air interface. The sub-flow 2 contains

less important speech information, without CRC protection on the air interface.

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 7

2.1.1 CS Conversational RAB for AMR-NB Speech

ZTE equipment supports all the eight AMR-NBs: 12.2kbps, 10.2kbps, 7.95kbps, 7.4kbps,

6.7kbps, 5.9kbps, 5.15kbps, and 4.75kbps. Which rate (s) to be used is same as the

rate(s) in RAB Assignment from CN. ZTE equipment supports DTX and SID.

The RAB parameters of ZTE RAN equipment, used to bear session AMR services, follow

the definition in the 3GPP TS 34.108.

2.1.2 WB-AMR Speech Support

ZTE RAN equipment supports all the nine speech rates of WB-AMR session, that is,

23.85kbps, 23.05kbps, 19.85kbps, 18.25kbps, 15.85kbps, 14.25kbps, 12.65kbps,

8.85kbps, 6.6kbps, together with the mute rate 1.75 kbps. The rate-(s) to be used is the

same as the rate(s) in RAB Assignment from CN. ZTE RNC enables and disables the

function of WAMR by the parameter WAMRSUPIND.

ZTE RNC does not support RAB negociation between AMR-NB and AMR-WB. When the

AMR-WB can not be established because of resources congestion, it is not supported to

establish AMR-NB by RAB negociation.

The RAB parameter of ZTE RAN equipment, used to bear session AMR-WB services,

follow the definition in the 3GPP TS 34.108.

2.1.3 AMR Rate Controlling

In WCDMA system, the radio environment between UE and a base station always

changes. When a UE is far away from the base station or the radio environment

degrades, the base station or UE is bound to transmit at a higher power under the action

of closed-loop power control in order to guarantee the QoS of AMR service. The power

change and power increase at this time may result in sharp increase in power and further

deterioration of the radio environment. As a result, the system capacity decreases and

even when the power is increased to a certain limit value, QoS requirements of service

can not be satisfied.

ZTE RNC equipment can monitor the uplink transmission power of UE in a UE internal

measurement report or the downlink transmission power of a Node B dedicated

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 8

measurement report base station. When the uplink or downlink transmission power rises

to a certain threshold, the RNC will automatically adjust this user's AMR to reduce the

power necessary for service. That is, a conversation is most probably kept going by

reducing voice quality. When the radio environment between UE and the base station is

good and the transmission power of the base station or UE decreases to a certain

threshold, AMR can be increased to provide users with better voice quality as long as

the system is neither overload nor congested.

In addition, when a cell evaluated by means of downlink transmission power and uplink

interference has high downlink load and uplink load, ZTE RNC equipment can lighten the

cell load by reducing the AMR of some low-priority users, so as to accommodate more

users.

The actual AMR which can be adjusted by the RNC must belong to the AMR code set

configured for users by the CN during call establishment. The voice quality when low-rate

AMR coding is used is not as good as that when high-rate AMR coding is used, but

low-rate AMR coding has higher capacity (number of users ) and wider coverage than

high-rate AMR coding. Analysis of simulation result shows that there is about 30%

coverage radius gain when the lowest AMR-NB (4.75kbps) instead of the highest

AMR-NB (12.2kbps) is used. When the lowest AMR-NB is used, a cell will accommodate

twice as many users as those when the highest AMR-NB is used.

2.1.4 TrFO

WCDMA employs AMR compressed voice encoding. At the R99 stage, TDM bearer is

used between CS core network devices, and voice must employ 64kbit/s PCM encoding.

One very important function of the R99 MSC is voice Transcoder (TC), which converts

the AMR voice codes of a mobile terminal into PCM codes and transmits them over a

network. The calls between mobile users require two voice encoding/decoding

conversions, that is, AMR-PCM-AMR. Frequent encoding/decoding reduces voice

quality.

In view of this, the 3GPP organization has introduced the Tandem Free Operation (TFO)

and Transcoder Free Operation (TrFO) in the R4 protocol to avoid voice

encoding/decoding. Meantime, the TFO and TrFO help save the transmission network

bandwidth between core networks. The differences between both technologies are as

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ZTE Confidential Proprietary 9

follows: The TFO still needs TC resource. After call establishment, a direct connection is

established between the TCs of the calling and called MSCs by means of in-band

signaling negotiation to bypass encoding/decoding. The TrFO does not need any TC

resource at all. It means that outband signaling encoding/decoding function (OoBTC) is

used during call establishment to implement consistent voice encoding/decoding

negotiation between UE and network.

The TFO technology is implemented in the core network equipment. It does not need the

participation of RAN equipment. The TrFO technology requires that RAN equipment

should support outband voice encoding negotiation and the processing related to a user

plane. Both the TFO and TrFO can also be used for AMR-WB encoding.

ZTE RAN equipment supports the TrFO function and complies with the 3GPP TS 23.153

and TS 25.415.

3 Technical Description

3.1 CS Conversational RAB for AMR-NB Speech

3.1.1 Implementation Mechanism of CS Conversational RAB for AMR-NB

Speech

Selection of AMR-NB Rates

Function description: The 3GPP protocol defines eight speech rates and two mute

rates for AMR-NB, which supports the speech rate up to 12.2kbps. A database

saves all the rate configuration combinations of AMR-NB. According to the

maximum rate of AMR-NB in a CN assignment message, the RNC searches for

corresponding configuration information from the database.

Setup of Single AMR-NB Service and Concurrence with the PS Service

Function description: This function supports the setup of a single AMR-NB service

and the concurrency of AMR-NB and PS services.

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Three Service RBs Established for the AMR-NB

Function description: This function supports service transformation by means of

three service RBs reconfiguration.

Mobility of AMR-NB

Function description: This function supports soft handover, hard handover, and

relocation of AMR-NB service, and handover between 2G and 3G.

Directed Retry of the AMR-NB Service During Assignment

Function description: This function supports directed retry of AMR-NB service

during service assignment.

Default Configuration of AMR-NB rates: 12.2k, 12.2/7.95/5.9/4.75k and 7.95kbps.

Function description: This function supports the default configuration of AMR-NB

rates: 12.2k, 12.2/7.95/5.9/4.75k and 7.95kbps. It is used for the handover between

2G and 3G. The RNC establishes bearer according to this default configuration,

sets the default configuration in the HANDOVER TO UTRAN COMMAND message,

and sends this message to the UE through the 2G network.

RAB Modification of AMR-NB

Function description: This function does not support RNC initiates the RAB

modification of AMR-NB service; it supports CN initiates the RAB modification of

AMR-NB service. At present, the main scenarios for the CN to initiate RAB

modification to the AMR-WB include the TFO or TrFO conditions satisfied after

performance of handover, call forwarding, and intelligent service.

Dynamic Rate Adjustment for AMR-NB Service

Function description: This function supports dynamic rate adjustment for the

AMR-NB service triggered by link level, resource congestion, and load control . If the

rate adjustment threshold is met, the uplink rate is controlled by the RNC through

the TFC Control, and the downlink rate is controlled by the RNC through the Iuup

reverse rate control frame.

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ZTE Confidential Proprietary 11

3.1.2 Signaling Flow of AMR Service

The setup flow of the AMR-WB and AMR-NB services is practically identical to that of

common services. The following example demonstrates the setup flow of the DCH

service in the synchronous mode.

Figure 3-1 Signaling Flow of AMR Service

6. Downlink Synchronisation

7. Uplink Synchronisation

UE Node B

Serving RNS

Serving

RNC

CN

RRC RRC

10. DCCH : Radio Bearer Setup Complete

NBAP NBAP 4. Radio Link Reconfiguration Ready

DCH-FP

NBAP NBAP 8. Radio Link Reconfiguration Commit

RRC RRC

9. DCCH : Radio Bearer Setup

Apply new transport format set

Select L1, L2 and Iu Data

Transport Bearer parameters

RANAP RANAP

11. RAB Assignment

Response

5. ALCAP Iub Data Transport Bearer Setup

2. ALCAP Iu Data

Transport Bearer Setup

Not required towards PS

domain

RANAP RANAP

1. RAB Assignment

Request

[Establishment]

NBAP NBAP 3. Radio Link Reconfiguration Prepare

[DCH Addition]

DCH-FP DCH-FP

DCH-FP

1 CN initiates establishment of the radio access bearer with RANAP message Radio

Access Bearer Assignment Request. Parameters: Radio Access Bearer

parameters, User Plane Mode, Transport Address, Iu Transport Association.

2 SRNC initiates set-up of Iu Data Transport bearer using ALCAP protocol. This

request contains the AAL2 Binding Identity to bind the Iu Data Transport Bearer to

the Radio Access Bearer (this step is not required towards PS domain).

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ZTE Confidential Proprietary 12

3 SRNC requests its Node B to prepare establishment of DCH to carry the radio

access bearer (Radio Link Reconfiguration Prepare ). Parameters: Transport

Format Set, Transport Format Combination Set, Power control information.

4 Node B allocates resources and notifies SRNC that the preparation is ready (Radio

Link Reconfiguration Ready). Parameters: Transport layer addressing information

(AAL2 address, AAL2 Binding Id) for Iub Data Transport Bearer.

5 SRNC initiates the setup of Iub Data Transport Bearer using ALCAP protocol. This

request contains the AAL2 Binding Identity to bind the Iub Data Transport Bearer to

DCH.

6 The Node B and SRNC establish synchronism for the Iub and Iur Data Transport

Bearer by means of exchange of the appropriate DCH Frame Protocol frames

Downlink Synchronization.

7 The Node B and SRNC establish synchronism for the Iub and Iur Data Transport

Bearer by means of exchange of the appropriate DCH Frame Protocol frames

Uplink Synchronization.

8 NBAP message Radio Link Reconfiguration Commit is sent from SRNC to Node

B.

9 RRC message Radio Access Bearer Setup is sent by SRNC to UE. Parameters:

Transport Format Set, Transport Format Combination Set.

10 UE sends RRC message Radio Access Bearer Setup Complete to SRNC.

11 SRNC sends RANAP message Radio Access Bearer Assignment Response to CN.

3.2 WB-AMR Speech Support

3.2.1 Implementation Mechanism of AMR-WB Functions

Selection of AMR-WB Rates

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ZTE Confidential Proprietary 13

Function description: ZTE through configuring the parameter WAMRSUPIND to

support the WB-AMR. The protocol 26.201 defines nine speech rates and one mute

rate for AMR-WB, which supports the maximum speech rate of 23.85kbps. The

database, with the AMR-WB service added, needs to save all AMR-WB rate

configuration combinations. According to the maximum AMR-WB rate in the

message assigned by the CN, the RNC searches for corresponding configuration

information from the database.

Note: The AMR-WB supports the voice bandwidth 50Hz-7kHz (the AMR-NB

supports the voice bandwidth 200Hz-3.4kHz); therefore, it has better voice quality

than the AMR-NB. Among the rates (23.85 kbps, 23.05 kbps, 19.85 kbps, 18.25

kbps, 15.85 kbps, 14.25 kbps, 12.65 kbps, 8.85 kbps, and 6.6 kbps) supported by

the AMR-WB, 12.65kbps is the minimum rate that can achieve high-quality sound

effects. The MOS values of 6.6 kbps, 8.85 kbps, and 12.65 kbps apparently

increase as the rate rises. The MOS values of 12.65kbps, 14.25kbps, 15.85kbps,

18.25kbps, and 19.85kbps do not apparently increase as the rate rises. So the rates

of 12.65 kbps, 8.85 kbps, and 6.6 kbps are recommended by 3GPP.

Setup of Single AMR-WB Service and Concurrency with PS Service

Function description: The setup of a single AMR-WB service and the concurrency

of the AMR-WB and PS services are supported in the same way as the AMR-NB.

Three Service RBs Established for AMR-WB

Function description: Originally, the AMR-WB had only two service RBs while the

AMR-NB had three. For easy conversion between these two services through

reconfiguration, the 3GPP 25.331 and 34.108 specifications related to the AMR-WB

recommend configuration of three service RBs. The service sub-flow associated

with the third RB does not exist in the Iu port, and its actual data volume is 0 (0 ×

60). The RNC requires special processing, that is, the Iu port still supports two

service sub-flows, while the Iuup port needs to support the interconnection between

two service sub-flows and three service RBs.

Mobility of AMR-WB

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ZTE Confidential Proprietary 14

Function description: Like the AMR-NB control policy, this function supports soft

handover, hard handover, relocation, and 2G-3G handover for the AMR-WB service.

This function uses the present parameters without new handover parameter added.

Directed Retry of AMR-WB Service During Assignment

Function description: Like the AMR-NB control policy, this function supports

directed retry of the AMR-WB service during service assignment. This function uses

the present parameters without new load balancing parameter added.

RAB Modification of AMR-WB

The RNC is not supported to initiate RAB modification to the AMR-WB service,

while the CN is supported to initiate the RAB modification to the AMR-WB, which is

performed in a way similar to that of the AMR-NB. At present, the main scenarios

for the CN to initiate RAB modification to the AMR-WB include the TFO or TrFO

conditions satisfied after performance of handover, call forwarding, and intelligent

service.

Dynamic Rate Adjustment for AMR-WB Service

Function description: Like the AMR-NB control policy, this function supports the

dynamic rate adjustment for the AMR-WB service triggered by link level, resource

congestion, and load control. This function uses the present parameters without

new load control parameter added. If the rate adjustment threshold is met, the

uplink rate is controlled by the RNC through the TFC Control, and the CN downlink

rate is controlled by the RNC through the Iuup reverse rate control frame.

3.3 AMR Rate Controlling

3.3.1 Classification of Dynamic AMR Adaptation

According to the types of AMR, dynamic AMR adaptation is classified into AMR-NB

dynamic rate adjustment and AMR-WB dynamic rate adjustment. The AMR-WB rate

adjustment principles and steps are the same as those of the AMR-NB. In Iuup Version1,

ZTE RNC configures the AMR-NB rates by the parameters AmrNbMode0UseTag,

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AmrNbMode1UseTag, AmrNbMode2UseTag, AmrNbMode3UseTag,

AmrNbMode4UseTag, AmrNbMode5UseTag, AmrNbMode6UseTag and

AmrNbMode7UseTag. And ZTE RNC configures AMR-WB rates by the parameters

AmrWbMode0UseTag, AmrWbMode1UseTag, AmrWbMode2UseTag,

AmrWbMode3UseTag, AmrWbMode4UseTag, AmrWbMode5UseTag,

AmrWbMode6UseTag, AmrWbMode7UseTag and AmrWbMode8UseTag. In Iuup

Version2, ZTE RNC supports all the AMR-NB and AMR-WB rates assigned by the CN.

The AMR-NB and AMR-WB dynamic rate adjustment based on single-link transmission

power is controlled by the configuration parameter AmrRncAdjust.

There are three types of AMR dynamic rate adjustment depending on the trigger

mechanisms:

AMR dynamic rate adjustment based on single-link transmission power

Due to inner-loop power control, uplink/downlink single -link transmission power

varies with the radio environment between the transmitting antennas of UE and

NodeB. When the radio environment degrades, the RNC should reduce the AMR to

decrease single-link transmission power to some degree. This serves to avoid

heavy uplink/downlink load of a cell resulting from increase in single-link

transmission power of AMR. When the single-link transmission power of AMR is low

and the system load is light, the RNC may increase the AMR to provide users with

better voice quality by making full use of system resources.

AMR rate adjustment triggered by the uplink/downlink overload of a cell

When a cell has uplink/downlink overload, the rate of uplink/downlink AMR service

should be reduced to decrease single-link transmission power, so as to lighten the

uplink/downlink load of the cell.

AMR rate adjustment triggered by the uplink/downlink resource congestion of a cell

Reduce the rate of uplink/downlink AMR service to lighten the uplink/downlink

resource congestion.

For these three trigger mechanisms, ZTE RNC can only adjust the rate of WB_AMR

services in the range of WB_AMR rates and can not adjust the rate of WB_AMR

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ZTE Confidential Proprietary 16

services to the rate of WB_AMR. ZTE RNC can also only adjust the rate of

NB_AMR services in the range of NB_AMR rates.

In terms of the currently implemented functions and AMR service running, ZTE considers

it unnecessary to control an uplink rate with the granularity as accurate as TTI. Therefore,

ZTE has not yet implemented SRB5-based uplink AMR-WB rate adjustment.

3.3.2 Dynamic AMR Adaptation Based on Single-Link Transmission Power

AMR-WB dynamic rate adjustment and AMR-NB dynamic rate adjustment both involve

uplink direction and downlink direction. They have the same principle and use the same

threshold. In view of this, they are unified as AMR dynamic rate adjustment and

described here.

3.3.2.1 Uplink Direction (Based on the UE Transmission power)

Uplink AMR dynamic rate adjustment is based on the transmission power reported by UE.

Its operating principles are as follows:

When the uplink transmission power reported by UE exceeds the threshold

AMR_6A (Refer to Section 3.3.2.3), the AMR should be reduced by one level if the

current uplink AMR is not the minimum rate. After degrading the uplink AMR level,

new Measurement Control will be sent to the UE.

When the uplink transmission power reported by UE is lower than the threshold

AMR_6B2 (Refer to Section 3.3.2.3), the AMR should be increased by one level if

the current uplink AMR is not the maximum rate and the uplink load of the system is

neither overloaded nor congested. After upgrading the uplink AMR level, new

Measurement Control will be sent to the UE.

In the TrFO connection mode, the following judgments must be added on the basis

of the steps above:

If the target value of the AMR uplink rate increase originated from the local end is

smaller than or equal to the maximum uplink rate of the Iu port, it is allowed to

originate the rate increase, which then will be admitted by the admission control

module. If the target value of the rate increase originated from the local end is

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ZTE Confidential Proprietary 17

greater than the maximum uplink rate of the Iu port, it is rejected to originate the

rate increase.

When the RNC receives the rate control command from the CN, the maximum rate

is the uplink target rate required by the CN. The admission control module

determines whether the target rate can be allowed by the current local end

according to the uplink load state of the current cell and the single-link UE

transmission power measurement report, and if the target rate is allowed, then RNC

returns this rate in the rate control response command to the peer end. At the same

time, the RNC sends to the UE the TFC control command, requiring adjustment of

the UE uplink rate to the target rate, otherwise RNC sends the Rate Control NACK

to the CN.

3.3.2.2 Downlink Direction (Based on DTCP)

The downlink AMR adjustment is based on the special downlink transmission power

measurement report from Node B on the basic principles as follows:

When the special downlink transmission power reported by NodeB exceeds the

threshold AMR_E1 (Refer to Section 3.3.2.3) for DtcpEaThd times consecutively,

the downlink AMR should be reduced by one level i f the current downlink AMR is

not the minimum rate.

When the special downlink transmission power reported by NodeB is lower than the

threshold AMR_F1 (Refer to Section 3.3.2.3) for DtcpEbThd times consecutively,

the downlink AMR should be increased by one level if the current downlink AMR is

not the maximum rate and the downlink load of the system is neither overloaded nor

congested.

In the TrFO connection mode, the downlink rate depends on the downlink rate of

the Iu port; In a Mobile to Mobile call, the downlink rate depends on the uplink rate

of the peer end. Therefore, the downlink AMR-WB rate adjustment algorithm has

the following changes in comparison with the non-TrFO connection mode:

When the local end needs to adjust the downlink AMR, the RNC sends the adjusted

target rate through the rate control command to the CN, which then sends this rate

through the rate control command to the peer-end RNC. The returned rate control

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response command contains the maximum uplink rate available with the peer end.

The peer end UE sends data at the smaller rate between the maximum uplink rate

supported by the peer end and the target rate required by the local end, so as to

complete downlink rate adjustment for the local end.

When the uplink rate of the peer end is decreased, the downlink rate of the local

end will be decreased accordingly.

When the uplink rate of the peer end is increased, the downlink rate of the local end

will be increased accordingly, resulting in change of the cell downlink load and the

single-link downlink D-TCP. The RNC should determine whether to decrease the

increasing downlink rate according to the cell downlink load and the single -link

downlink D-TCP measurement report. If the downlink rate should be decreased, the

RNC sends to the CN the rate control command that contains the maximum rate

supported by the local end, so as to control the downlink rate of the Iu port.

3.3.2.3 UE internal TxP Measurement

The UE internal measurement mainly measures the UE transmission power (TxP) by

event report,

Before obtaining UE internal measurement parameters, first find the “UE Internal

Measurement Configuration Index (UeIntMCfgNo)” from UE internal measurement

relationship (UeInt ) configuration items, based on the Cid and the measurement purpose

(EvtMeasTP1); then find a relevant set of parameters from UE internal measurement

relationship (UeInt ) configuration items, based on the UE Internal Measurement

Configuration Index (UeIntMCfgNo).

Note: Each UeIntMCfgNo corresponds to one measurement purpose, indicated with the

parameter UeIntMCfgNote.

There are two kinds of event, Event 6A and Event 6B:

Event 6A:when the UE TxP measurement value is greater than a certain absolute

threshold and this condition lasts for a moment

(TrigTime[MAX_UE_INTER_MEAS_EVENT] when UeIntMCfgNote =0), the Event 6A is

triggered;

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Event 6B: when the UE TxP measurement value is smaller than a certain absolute

threshold and this condition lasts for a moment

(TrigTime[MAX_UE_INTER_MEAS_EVENT] when UeIntMCfgNote =0), the Event 6B is

triggered.

The threshold parameter of Event 6A and Event 6B(TxPowerThres)is a delta value

relative to min(UE maximum transmitted power, MaxUlDpchPwr).

Here, MAX_UE_INTER_MEAS_EVENT is configured by MeasEvtNum .

The correspondence between other parameters that need to be filled in UE internal

measurement control message and OMCR configuration is described as follows:

Measurement report transmission mode (MeasRptTrMod(UeInt))

Filter coefficient (FilterCoeff(UeInt))

Measurement quantity (MeasQuantity(UeInt))

Report Criteria (RptCrt(UeInt))

UE Transmitted Power (RptTxPwrInd)

UE internal event identity (MeaEvtId(UeInt))

If AMR service exists, and AmrRncAdjust is “Open”, and the number of uplink AMR rates

is larger than 1, the measurement is triggered. Otherwise, the UE TxP measurement is

switched off.

3.3.2.4 Node B Dedicated TCP Measurement

The Node B dedicated TCP is related with the UE, it indicates the downlink transmission

power for the UE (the TCP on given carrier, given scramble, and given channelization

code) is measured by the Node B. The Node B dedicated TCP measurement for the

AMR rate control is reported periodically, the period is configured by RptPrd, Because of

the periodical report, whether the criteria for Event A/B is satisfied is determined by RNC.

Two sets of measurement parameters are configured:

Event A: when the NodeB D-TCP measurement value is greater than a specific

absolute threshold (EvtAbTcpThrd[3] when NbDMCfgNote is 7), Event A is

triggered. Event A is used to trigger the downlink rate decrease. When the criteria of

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Event A is satisfied, the downlink transmission power for a certain UE is considered

to be in a high power status.

Event B: when the NodeB D-TCP measurement value is smaller than a specific

absolute threshold (EvtAbTcpThrd[3] when NbDMCfgNote is 8), Event B is

triggered. The event B is used to check whether the downlink transmission power is

in a low status. When the criteria of Event A is satisfied, the downlink transmission

power for a certain UE is considered to be in a low power status.

Here, EvtAbTcpThrd[3] is the power offset to MaxDlDpchPwr.

If AMR service exists, and AmrRncAdjust is “Open”, and the number of downlink AMR

rates is larger than 1, the measurement is triggered. Otherwise, the Node B dedicated

TCP measurement is switched off.

3.3.3 Dynamic Adjustment Triggered by Resource Congestion

In case of uplink/downlink resource congestion, the RNC should decrease the rate of

some AMR services by priority. When the uplink/downlink resource congestion is cleared,

the RNC should increase step by step the rate of any decreased AMR service that meets

the rate increase conditions described above. This dynamic adjustment also applies to

WB-AMR. For details, please refer to ZTE UMTS Congestion Control Feature Guide.

3.3.4 Dynamic Adjustment Triggered by Load

In case of uplink/downlink overload on a cell, the RNC should decrease the rate of some

AMR services by priority. When the uplink/downlink is not overload , the RNC should

increase step by step the rate of any decreased AMR service that meets the rate

increase conditions described above. This dynamic adjustment also applies to WB-AMR.

For details, please refer to ZTE UTMS Overload Control Feature Guide.

3.3.5 Initial AMR Rate Selection Based on Cell Load

When the IuUP version is V1, RNC could reduce the intial AMR rate to control the uplink

or downlink cell load and the cell capacity could be increased.

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For the NB-AMR service: A NB-AMR rate set is built according to Section 3.3.6. If the

best cell downlink load is larger than AmrDlLdThrd or upnlink load is larger than

AmrUlLdThrd, the intial NB-AMR rate should be determined according to the following

principle. If the Guaranteed Bit Rate in the above set is larger than NAmrInitialRate, the

initial NB-AMR rate equals to the GBR. If the GBR in the above set is less than or equal

to NAmrInitialRate, the initial rate should be the largest rate among the rates that are less

than or equal to NAmrInitialRate and larger than or equal to the GBR. If the best cell

downlink load is smaller than or equal to AmrDlLdThrd or upnlink load is smaller than or

equal to AmrUlLdThrd, the initial NB-AMR rate is the maximum rate among the rates, in

the above set, which are smaller than or equal to the GBR in the RAB ASSIGNMENT

REQUEST.

For the WB-AMR service: A NB-AMR rate set is built according to Section 3.3.6. If the

best cell downlink load is larger than AmrDlLdThrd or upnlink load is larger than

AmrUlLdThrd, the intial WB -AMR rate should be determined according to the following

principle. If the Guaranteed Bit Rate in the above set is larger than WAmrInitialRate, the

initial WB-AMR rate equals to the GBR. If the GBR in the above set is less than or equal

to WAmrInitialRate, the initial rate should be the largest rate among the rates that are

less than or equal to WAmrInitialRate and larger than or equal to the GBR. If the best cell

downlink load is smaller than or equal to AmrDlLdThrd or upnlink load is smaller than or

equal to AmrUlLdThrd, the initial WB-AMR rate is the maximum rate among the rates, in

the above set, which are smaller than or equal to the GBR in the RAB ASSIGNMENT

REQUEST.

The initial AMR rate determined according to the principles above is also the maximum

AMR rate after the call is set up.

When the IuUP version is V2, the initial NB-AMR or WB-AMR rate is the MBR in the RAB

ASSIGNMENT REQUEST.

3.3.6 GBR Reservation for the AMR service

When the IuUP version is V1, the NB-AMR or WB-AMR rates that are configured by the

OMC may be different from the AMR rates in the RAB ASSIGNMENT REQUEST, so the

actual NB-AMR or WB-AMR rates that are implemented should be the intersection of the

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above two sets of AMR rates, and the GBR in RAB ASSIGNMENT REQUEST, i.e. the

GBR in RAB ASSIGNMENT REQUEST is included mandatorily.

But sometimes the RNC of other venders do not support the GBR in RAB ASSIGNMENT

REQUEST, so the parameter AMRGbrResInd is used to determine whether the GBR in

RAB ASSIGNMENT REQUEST is included mandatorily.

If AMRGbrResInd is set to “1: True”, the actual NB-AMR or WB-AMR rates that are

implemented should be the intersection of the above two sets of AMR rates, and the

GBR in RAB ASSIGNMENT REQUEST. And GBR is the GBR in RAB ASSIGNMENT

REQUEST.

If AMRGbrResInd is set to “0: False”, the actual NB-AMR or WB-AMR rates that are

implemented should be the intersection of the above two sets of AMR rates. And GBR is

the minimum rate among the rates, in the intersection set, which are larger than or equal

to the GBR in RAB ASSIGNMENT REQUES T.

3.4 TrFO Support

At the R99 stage, voice at the CN CS employs 64kbit/s PCM encoding based on TDM

bearer. Therefore, the R99 MSC must have the voice TC function. But voice

encoding/decoding is apt to reduce voice quality. The calls between mobile users, in

particular, need dual voice encoding/decoding. If a codec is not used, voice quality will

be improved with network bandwidth saved.

At the R4 stage, voice encoding/decoding times can be reduced by establishing a TrFO

connection. The TrFO connection can be established throughout end-to-end process or

between some node of a call connection. For example, for a call between UMTS UE and

a fixed telephone, the TrFO connection only exists between UMTS UE and a core

network. The core network and RNC in the TrFO connection must support the IuUP V2.

Otherwise, no TrFO connection can be established. ZTE supports the IuUP V1 and IuUP

V2. The RNC will make a choice according to CN RAB assignment parameters.

The TrFO is implemented by employing the outband signaling encoding/decoding control

function (OoBTC). It is applicable to the calls between mobile networks and those

between a mobile network and an external network. When the same voice

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encoding/decoding type is used between both call parties or between one call party and

a node in the call connection, the TrFO can transparently transmit compressed voice,

which improves voice quality and saves transmission bandwidth.

The node on both sides with a TrFO connection successfully established will use

completely the same common compressed voice encoding type negotiated at the

OoBTC stage. A codec must be inserted between a TrFO connection and a non-TrFO

connection to convert one encoding type into another. The implementat ion strategy of

the core network will, to the greatest extent, ensure that the insertion position can meet

the following requirements:

The insertion position should reduce the use of a transcoder and improve voice

quality;

The insertion position should save transmission bandwidth, that is, it should prolong

the connection which uses compressed voice encoding data for transmission.

ZTE RNC controls the IuUP version between CN and RNC in the RAB assignment

procedure by the parameter IntraRatUpVer if CN support both IuUP Version1 and

Version2. And ZTE RNC controls the IuUP version between CN and RNC in 2G to 3G

relocation procedure by the parameter InterRatUpVer if CN support both IuUP Version1

and Version2.

For a UTRAN, its IuUP initialization, reverse initialization, IuUP rate control, and IuUP

reverse rate control are related to the TrFO process.

3.4.1 OoBTC Outband Codec Control

When a call is initiated, both call parties will negotiate about the codec so as to attempt to

establish a TrFO operation. In an IAM, the O-MSC carries the supported codec type list

and sends it to a transmission network. From the list, the transmission network deletes

the types that are not supported and sends it to a T-MSC. From the list, the T-MSC also

deletes the encoding types that are not supported. Then, the T-MSC selects an optimal

common encoding/decoding type, returns it to the transmission network and the O-MSC,

and notifies them of the currently selected encoding/decoding type. Meantime, the

T-MSC feeds back the encoding/decoding type that the Terminating UE supports to the

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O-MSC, and begins to establish bearer on the basis of this codec. This flow is shown in

the following figure.

Figure 3-2 Flow of OoBTC Outband Codec Control

Codec List (v, w, x, y, z)

Codec List (v, w, x, z)

O-MSC Transit T-MSC

O-MGW T-MGWTransit

MGW

Selected Codec = v, Available List (v, x, z, )

Selected Codec = v

Selected Codec = v

Selected Codec = v, Available

List (v, x, z, )

Selected Codec = v

Bearer Established Bearer Established

The encoding type that the UE supports is transparently transmitted to the RNC by

means of Uplink Direct Transfer-> NAS Message-> Bearer Capacity. Then, the RNC

transparently transmits the encoding type to the MSC Server by means of Direct Transfer

-> NAS Indicator ->Bearer Capacity. During RAB assignment, the encoding/decoding

type lists of the calling and called parties are completely the same.

3.4.2 IuUP Initialization

IuUP initialization serves to define the mapping relationship (used at the data

transmission stage) between the RNC and CN on both sides of IuUP, including RAB

sub-flow combination, RFCIs, and SDU size of related RAB sub-flow.

If a bearer is successfully established, the CN will deliver an RAB assignment request

message to the RNC. The RNC in R4 version must support all the SDU sub-flow

combinations in the RAB assignment request message. That is, the content in the

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initialization frame is a universal set of sub-flow combinations determined by RAB

assignment. Thus, the initialization frame will only be used to negotiate about IuUP

version information and RFCI correspondence (each RFCI corresponds to a sub-flow

combination). In the R99 version, this initialization process can only be initiated when the

RNC receives RAB assignment/modification or RNC relocation. In the R4 version, the

CN can also start this initialization process, called IuUP reverse initialization. IuUP

initialization is shown in the following figure.

Figure 3-3 IuUP Initialization

*

Transfer Of User Data

CN/ RNC

INITIALISATION

((RFCI, SDU sizes[, IPTIs 2) ]) m )

INITIALISATION ACK

* can be repeated N INIT times 2) optional

RNC/ CN

In the RFCI set determined during IuUP initialization, the rate which corresponds to the

first RAB sub-flow combination is the maximum rate in the initialization answer direction

permitted by the local end when data transmission begins. The maximum rate must be

greater than the guaranteed rate and SID rate. It can be modified during IuUP rate

control after IuUP initialization. The rate greater than the guaranteed rate is called a

controllable rate. The rate lower than the guaranteed rate cannot be modified.

3.4.3 IuUP Rate Control

IuUP rate control serves to notify the peer IuUP protocol layer of the maximum rate at the

Iu port in the reverse direction of the rate control frame. In the R4 version, IuUP rate

control can be initiated by the RNC or the CN. In the R99 version, IuUP rate control can

only be initiated by the RNC.

As long as an IuUP entity is not suspended by other control flows, it can initiate rate

control. The controlled rates are all included in the RFC set determined during IuUP

initialization. These rates that correspond to the RFC should be higher than the

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guaranteed rate. "Rate control" cannot be implemented in terms of the SID rate and the

RFC lower than the guaranteed rate because they themselves cannot be prohibited.

Figure 3-4 Flow of IuUP Rate Control

CN/ RNC

RNC/ CN

RATE CONTROL

(RFCI indicators)

RATE CONTROL ACK

(RFCI indicators)

Note: The rate control frame describes the use limit of an "RFC set", which is called

"RFC limit set" in the following parts.

In downlink direction, the RNC triggers the rate control frame, records the "RFC limit set"

(downlink direction), and monitors the implementation behavior of the CN. If the CN still

sends the data frame of the limited RFCI, the rate control frame must be resent. In uplink

direction, the IuUP module of the RNC receives the rate control frame and implements

the limit by means of TFC control.

The rate control initiated by the CN is as follows: After receiving a rate control message

from the RNC, the CN initiates rate control to the other party of a call to limit or open the

other party's uplink AMR level. Or the CN initiates a rate adjustment flow on its own

according to TrFO. For example, in SRNS relocation, the CN first performs reverse

initialization after a new RNC sends relocation detection to the CN. Then, the new RNC

initiates a process called immediate initialization. This serves to negotiate about the

maximum rate for data transmission between two IuUP entities which support TrFO.

The rate control initiated by the RNC is as follows: During dynamic AMR process, the

RNC adjusts the downlink AMR level according the downlink load of a cell or the

dedicated TCP measurement of an RL, and initiates rate control.

Compared with the encoding/decoding type negotiation before initialization, the IuUP

rate control is in-band rate control.

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4 Parameters and Configuration

4.1 Parameter List of AMR Dynamic Rate Adjustment

Table 4-1 Parameter List

Id Abbreviated Parameter name

1 AmrRncAdjust AMR Rate Adjustment Switch for RNC

2 MaxUlDpchPwr

Maximum Allowed Uplink DPCH Transmission

Power

3 MaxDlDpchPwr DPCH Maximum DL Power

4 AmrNbMode0UseTag AMR_NB 4.75k Use Tag

5 AmrNbMode1UseTag AMR_NB 5.15k Use Tag

6 AmrNbMode2UseTag AMR_NB 5.90k Use Tag

7 AmrNbMode3UseTag AMR_NB 6.70k Use Tag

8 AmrNbMode4UseTag AMR_NB 7.40k Use Tag

9 AmrNbMode5UseTag AMR_NB 7.95k Use Tag

10 AmrNbMode6UseTag AMR_NB 10.2k Use Tag

11 AmrNbMode7UseTag AMR_NB 12.2k Use Tag

12 AmrWbMode0UseTag AMR_WB 6.60k Use Tag

13 AmrWbMode1UseTag AMR_WB 8.85k Use Tag

14 AmrWbMode2UseTag AMR_WB 12.65k Use Tag

15 AmrWbMode3UseTag AMR_WB 14.25k Use Tag

16 AmrWbMode4UseTag AMR_WB 15.85k Use Tag

17 AmrWbMode5UseTag AMR_WB 18.25k Use Tag

18 AmrWbMode6UseTag AMR_WB 19.85k Use Tag

19 AmrWbMode7UseTag AMR_WB 23.05k Use Tag

20 AmrWbMode8UseTag AMR_WB 23.85k Use Tag

21 WAMRSUPIND WB-AMR Speech Support Indicator

22 INTERRATUPVER Inter-RAT IuUP Version

23 INTRARATUPVER Intra-RAT IuUP Version

24 DtcpEaThd Event A Counter Threshold for PS on DL DCH or

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Id Abbreviated Parameter name

DL AMR Decreasing Rate on D-TCP

25 DtcpEbThd Event B Counter Threshold for Restriction PS

Increasing Rate on DL DCH or Triggering DL

AMR Increasing Rate Based on D-TCP

26 AmrDlLdThrd Cell Downlink Load Threshold for AMR Data

Rate Decision

27 AmrUlLdThrd Cell Uplink Load Threshold for AMR Data Rate

Decision

28 NAmrInitialRate Narrow-Band AMR Initial Data Rate for High Cell

Load

29 WAmrInitialRate Wide-Band AMR Initial Data Rate for High Cell

Load

30 TxPowerThres UE Transmitted Power Threshold

31 EvtAbTcpThrd Measurement Threshold of Event A/B for

Transmitted Code Power Ratio

32 UeIntMCfgNote Function of Configuration Parameters

33 NbDMCfgNote Function of Configuration Parameters

34 TrigTime[MAX_UE_INTE

R_MEAS_EVENT] Time to Trigger

35 MeasEvtNum Maximum Event Number of UE Internal

Measurement

36 MeasRptTrMod Measurement Report Transfer Mode

37 FilterCoeff Filter coefficient

38 MeasQuantity UE Internal Measurement Quantity

39 RptCrt Report Criteria

40 RptTxPwrInd UE Transmitted Power Report Indicator

41 MeaEvt Id[MAX_UE_INTE

R_MEAS_EVENT]

UE Internal Measurement Event Identity

42 EvtMeasTP1 UE Transmitted Power Event Report

Configuration Index for AMR

43 AMRGbrResInd GBR of AMR Service Whether to be Reserved

Indicator

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4.2 Configuration of AMR Dynamic Rate Adjustment

Parameters

4.2.1.1 AMR Rate Adjustment Switch for RNC

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Logical RNC Associated With PLMN Configuration Information->AMR Rate

Adjustment Switch for RNC

Parameter Configuration

When the value of this parameter is "Closed", AMR dynamic rate adjustment will not

be triggered due to UE internal measurement and NodeB special measurement;

when the value of this parameter is "Open", AMR dynamic rate adjustment will be

triggered due to the above-mentioned measurement. When this parameter is

closed, AMR voice quality remains unchanged in any case; when this parameter is

open, AMR voice quality may slightly degrade according to different scenarios, but

system capacity can be increased accordingly.

4.2.1.2 Maximum Allowed Uplink DPCH Transmission Power

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->Power Control Related to Service

and Diversity Mode->Maximum Allowed Uplink DPCH Transmission Power

Parameter Configuration

Background configuration value. The greater this value is, the higher the maximum

permissible uplink transmission power is. It is related to service sub-class..

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4.2.1.3 DPCH Maximum DL Power

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->Power Control Related to Service

and Diversity Mode->DPCH Maximum DL Power

Parameter Configuration

It represents the maximum permissible downlink DPCH transmission power. The

greater this value is, the higher the maximum permissible downlink transmission

power is .It is related to service sub-class.

4.2.1.4 AMR_NB 4.75k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 4.75k Use Tag

Parameter Configuration

AMR_NB 4.75k using label 0: not using

1: using

4.2.1.5 AMR_NB 5.15k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 5.15k Use Tag

Parameter Configuration

AMR_NB 5.15k using label 0: not using

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1: using

4.2.1.6 AMR_NB 5.90k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 5.90k Use Tag

Parameter Configuration

AMR_NB 5.90k using label 0: not using

1: using

4.2.1.7 AMR_NB 6.70k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 6.70k Use Tag

Parameter Configuration

AMR_NB 6.70k using label 0: not using

1: using

4.2.1.8 AMR_NB 7.40k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 7.40k Use Tag

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Parameter Configuration

AMR_NB 7.40k using label 0: not using

1: using

4.2.1.9 AMR_NB 7.95k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 7.95k Use Tag

Parameter Configuration

AMR_NB 7.95k using label 0: not using

1: using

4.2.1.10 AMR_NB 10.2k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 10.2k Use Tag

Parameter Configuration

AMR_NB 10.2k using label 0: not using

1: using

4.2.1.11 AMR_NB 12.2k Use Tag

OMC Path

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Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_NB 12.2k Use Tag

Parameter Configuration

AMR_NB 12.2k using label 0: not using

1: using

4.2.1.12 AMR_WB 6.60k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 6.60k Use Tag

Parameter Configuration

AMR_WB 6.60k using label 0: not using

1: using

4.2.1.13 AMR_WB 8.85k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 8.85k Use Tag

Parameter Configuration

AMR_WB 8.85k using label 0: not using

1: using

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4.2.1.14 AMR_WB 12.65k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 12.65k Use Tag

Parameter Configuration

AMR_WB 12.65k using label 0: not using

1: using

4.2.1.15 AMR_WB 14.25k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 14.25k Use Tag

Parameter Configuration

AMR_WB 14.25k using label 0:not using

1: using

4.2.1.16 AMR_WB 15.85k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 15.85k Use Tag

Parameter Configuration

AMR_WB 15.85k using label 0: not using

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1: using

4.2.1.17 AMR_WB 18.25k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 18.25k Use Tag

Parameter Configuration

AMR_WB 18.25k using label 0: not using

1: using

4.2.1.18 AMR_WB 19.85k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 19.85k Use Tag

Parameter Configuration

AMR_WB 19.85k using label 0: not using

1: using

4.2.1.19 AMR_WB 23.05k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 23.05k Use Tag

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ZTE Confidential Proprietary 36

Parameter Configuration

AMR_WB 23.05k using label 0: not using

1: using

4.2.1.20 AMR_WB 23.85k Use Tag

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->AMR_WB 23.85k Use Tag

Parameter Configuration

AMR_WB 23.85k using label 0: not using

1: using

4.2.1.21 WB-AMR Speech Support Indicator

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->RNC Configuration Supplement Information->WB-AMR Speech Support

Indicator

Parameter Configuration

This parameter indicates whether the RNC support WB-AMR voice services.

4.2.1.22 Inter-RAT IuUP Version

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->RNC Radio Resource

Management->Inter-RAT IuUP Version Selection

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Parameter Configuration

Specifies the intra-RAT IuUP Version. When CN supports both IuUP Version1 and

Version2, ZTE RNC controls the IuUP version between CN and RNC according to

this parameter in the 2G to 3G relocation procedure.

4.2.1.23 Intra-RAT IuUP Version

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->RNC Radio Resource

Management->Intra-RAT IuUP Version Selection

Parameter Configuration

Specifies the intra-RAT IuUP Version. When CN supports both IuUP Version1 and

Version2, ZTE RNC controls the IuUP version between CN and RNC according to this

parameter in the RAB assignment and Intra-RAT relocation procedure.

4.2.1.24 Event A Counter Threshold for PS on DL DCH or DL AMR Decreasing Rate

on D-TCP

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration

Information->Logical RNC XXX->Modify Advanced Parameter->Dynamic Radio

Bearer Controll Information->Event A Counter Threshold for PS on DL DCH or DL

AMR Decreasing Rate on D-TCP

Parameter Configuration

This parameter indicates the event A counter threshold of consecutive DTCP

reports. If the times of dedicated transmitted code power being larger than the event

A threshold exceed the threshold indicated by this parameter, it will trigger downlink

PS or AMR decreasing rate .

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4.2.1.25 Event B Counter Threshold for Restriction PS Increasing Rate on DL DCH

or Triggering DL AMR Increasing Rate Based on D-TCP

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration

Information->Logical RNC XXX->Modify Advanced Parameter->Dynamic Radio

Bearer Controll Information->Event B Counter Threshold for Restriction PS

Increasing Rate on DL DCH or Triggering DL AMR Increasing Rate Based on

D-TCP

Parameter Configuration

This parameter indicates the event B counter threshold of consecutive DTCP

reports. If the times of dedicated transmitted code power being less than the event B

threshold exceed the threshold indicated by this parameter, it will trigger downlink

AMR increasing rate or allow PS services to increase rate on DL DCH based on

traffic volume report .

4.2.1.26 Cell Downlink Load Threshold for AMR Data Rate Decision

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->UltranCell->UltranCellXXX->Modify Advanced

Parameter->utranCell->Cell Downlink Load Threshold for AMR Data Rate Decision

Parameter Configuration

This parameter is relative to the cell maximal Transmit Carrier Power and is used to

decide the Initial AMR data rate. When the cell effective downlink load is larger than

this threshold, the new Narrow-Band AMR will be setup with the data rate of

NAmrInitialRate or GBR, the new Wide-Band AMR will be setup with the data rate of

WAmrInitialRate or GBR. Else, the new Narrow-Band AMR will be setup with the

maximal data rate of Narrow-Band AMR, the new Wide-Band AMR will be setup with

the maximal data rate of Wide-Band AMR.

AMR-NB&AMR-NB Feature Guide

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4.2.1.27 Cell Uplink Load Threshold for AMR Data Rate Decision

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->UltranCell->UltranCellXXX->Modify Advanced

Parameter->utranCell->Cell Uplink Load Threshold for AMR Data Rate Decision

Parameter Configuration

This parameter is relative to the cell uplink base noise and is used to decide the

Initial AMR data rate. When the cell effective uplink load is larger than this threshold,

the new Narrow-Band AMR will be setup with the data rate of NAmrInitialRate or

GBR, the new Wide-Band AMR will be setup with the data rate of WAmrInitialRate

or GBR. Else, the new Narrow-Band AMR will be setup with the maximal data rate of

Narrow-Band AMR, the new Wide-Band AMR will be setup with the maximal data

rate of Wide-Band AMR.

4.2.1.28 Narrow-Band AMR Initial Data Rate for High Cell Load

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->Narrow-Band AMR Initial Data Rate for High Cell Load

Parameter Configuration

This parameter indicates the Initial AMR data rate when cell load is high. When the

cell effective downlink load is larger than AmrDlLdThrd or the cell effective uplink

load is larger than AmrUlLdThrd, the new Narrow-Band AMR will be setup with the

data rate of NAmrInitialRate or GBR; else, the new Narrow-Band AMR will be setup

with the maximal data rate of Narrow-Band AMR.

4.2.1.29 Wide-Band AMR Initial Data Rate for High Cell Load

OMC Path

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 40

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Logical RNC Associated With PLMN Configuration Information

XXX->Modify Advanced Parameter->RNC Configuration Related to

PLMN->Wide-Band AMR Initial Data Rate for High Cell Load

Parameter Configuration

This parameter indicates the Initial AMR data rate when cell load is high. When the cell

effective downlink load is larger than AmrDlLdThrd or the cell effective uplink load is

larger than AmrUlLdThrd, the new Wide-Band AMR will be setup with the data rate of

WAmrInitialRate or GBR; else, the new Wide-Band AMR will be setup with the maximal

data rate of Wide-Band AMR.

4.2.1.30 UE Transmitted Power Threshold

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->UE Transmitted Power Threshold

Parameter Configuration

This parameter indicates the UE transmitted power threshold in event 6a/6b.

4.2.1.31 Measurement Threshold of Event A/B for Transmitted Code Power Ratio

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->NodeB Dedicated Measurement

Configuration->Measurement Threshold of Event A/B for Transmitted Code Power

Parameter Configuration

This parameter indicates the power offset of the DPCH maximum DL power, which

defines which threshold that shall trigger event A, B for transmitted carrier power

measurement.

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4.2.1.32 Function of Configuration Parameters

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Function of Configuration Parameters

Parameter Configuration

This parameter indicates the function of configuration parameters corresponding to

the UE internal measurement configuration index.

4.2.1.33 Function of Configuration Parameters

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->NodeB Dedicated Measurement

Configuration->Function of Configuration Parameters

Parameter Configuration

This parameter indicates the function, purpose etc. of the dedicated measurement

parameters indicated by the configuration index.

4.2.1.34 Time to Trigger

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Time to Trigger

Parameter Configuration

This parameter indicates the period of time during which the event condition has to be

satisfied before sending a measurement report.

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4.2.1.35 Maximum Event Number of UE Internal Measurement

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Maximum Event Number of UE Internal Measurement

Parameter Configuration

This parameter indicates the maximum event number of UE internal measurement

4.2.1.36 Measurement Report Transfer Mode

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Measurement Report Transfer Mode

Parameter Configuration

This parameter indicates the RLC mode of the UE internal measurement report .

4.2.1.37 Filter coefficient

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Filter Coefficient

Parameter Configuration

This parameter indicates the filtering factor that UE performs the L3 filtering on the

measurement results of the internal measurement.

4.2.1.38 UE Internal Measurement Quantity

OMC Path

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 43

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->UE Internal Measurement Quantity

Parameter Configuration

This parameter indicates the measurement quantity of the UE internal measurement.

4.2.1.39 Report Criteria

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->Report Criteria

Parameter Configuration

This parameter indicates the report criteria for UE internal measurement report.

4.2.1.40 UE Transmitted Power Report Indicator

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->UE Transmitted Power Report Indicator

Parameter Configuration

This parameter indicates whether the UE transmitted power report is requested or not.

4.2.1.41 UE Internal Measurement Event Identity

OMC Path

Path: View->Configuration Management->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->UE Internal Measurement Event Identity

Parameter Configuration

AMR-NB&AMR-NB Feature Guide

ZTE Confidential Proprietary 44

This parameter indicates the UE internal measurement event identity.

4.2.1.42 UE Transmitted Power Event Report Configuration Index for AMR

OMC Path

Path: View->Configuration Management ->RNC NE->RNC Radio Resource

Management->Modify Advanced Parameter->UE Internal Measurement

Configuration->UE Internal Measurement Configuration Index 0

Parameter Configuration

This parameter indicates the UE transmitted power event report configuration index

for AMR adjustment, which is used for indexing the configuration of the parameters

of UE transmitted power event report for AMR.

4.2.1.43 GBR of AMR Service Whether to be Reserved Indicator

OMC Path

View -> Configuration Management -> RNC NE -> RNC Radio Resource

Management -> Advanced Parameter Manager -> RNC Radio Resource

Management -> GBR of AMR Service Whether to be Reserved Indicator

Parameter Configuration

This parameter indicates whether the CN assignment GBR of AMR service is

forcibly reserved in Iu UP V1, when the CN assignment GBR is not matching with

the AMR rate configured by RNC.

5 Counter and Alarm

5.1 Counter List

Counter No. Description

C310030466 Number of CS AMR 12.2k in the best cell

C310030467 Number of CS AMR 10.2k in the best cell

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Counter No. Description

C310030468 Number of CS AMR 7.95k in the best cell

C310030469 Number of CS AMR 7.4k in the best cell

C310030470 Number of CS AMR 6.7k in the best cell

C310030471 Number of CS AMR 5.9k in the best cell

C310030472 Number of CS AMR 5.15k in the best cell

C310030473 Number of CS AMR 4.75k in the best cell

C310030474 Number of CS WB AMR 23.85k in the best cell

C310030475 Number of CS WB AMR 23.05k in the best cell

C310030476 Number of CS WB AMR 19.85k in the best cell

C310030477 Number of CS WB AMR 18.25k in the best cell

C310030478 Number of CS WB AMR 15.85k in the best cell

C310030479 Number of CS WB AMR 14.25k in the best cell

C310030480 Number of CS WB AMR 12.65k in the best cell

C310030481 Number of CS WB AMR 8.85k in the best cell

C310030482 Number of CS WB AMR 6.60k in the best cell

C310030638 Number of CS AMR 12.2k in the non-best cell

C310030639 Number of CS AMR 10.2k in the non-best cell

C310030640 Number of CS AMR 7.95k in the non-best cell

C310030641 Number of CS AMR 7.4k in the non-best cell

C310030642 Number of CS AMR 6.7k in the non-best cell

C310030643 Number of CS AMR 5.9k in the non-best cell

C310030644 Number of CS AMR 5.15k in the non-best cell

C310030645 Number of CS AMR 4.75k in the non-best cell

C310030646 Number of CS WB AMR 23.85k in the non-best cell

C310030647 Number of CS WB AMR 23.05k in the non-best cell

C310030648 Number of CS WB AMR 19.85k in the non-best cell

C310030649 Number of CS WB AMR 18.25k in the non-best cell

C310030650 Number of CS WB AMR 15.85k in the non-best cell

C310030651 Number of CS WB AMR 14.25k in the non-best cell

C310030652 Number of CS WB AMR 12.65k in the non-best cell

C310030653 Number of CS WB AMR 8.85k in the non-best cell

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Counter No. Description

C310030654 Number of CS WB AMR 6.60k in the non-best cell

C310063411 Number of CS AMR 12.2k in the DRNC cell

C310063412 Number of CS AMR 10.2k in the DRNC cell

C310063413 Number of CS AMR 7.95k in the DRNC cell

C310063414 Number of CS AMR 7.4k in the DRNC cell

C310063415 Number of CS AMR 6.7k in the DRNC cell

C310063416 Number of CS AMR 5.9k in the DRNC cell

C310063417 Number of CS AMR 5.15k in the DRNC cell

C310063418 Number of CS AMR 4.75k in the DRNC cell

C310063419 Number of CS WB AMR 23.85k in the DRNC cell

C310063420 Number of CS WB AMR 23.05k in the DRNC cell

C310063421 Number of CS WB AMR 19.85k in the DRNC cell

C310063422 Number of CS WB AMR 18.25k in the DRNC cell

C310063423 Number of CS WB AMR 15.85k in the DRNC cell

C310063424 Number of CS WB AMR 14.25k in the DRNC cell

C310063425 Number of CS WB AMR 12.65k in the DRNC cell

C310063426 Number of CS WB AMR 8.85k in the DRNC cell

C310063427 Number of CS WB AMR 6.60k in the DRNC cell

C310040001 Holding time for the best cell,AMR12.2

C310040002 Holding time for the best cell,AMR10.2

C310040003 Holding time for the best cell,AMR7.95

C310040004 Holding time for the best cell,AMR7.4

C310040005 Holding time for the best cell,AMR6.7

C310040006 Holding time for the best cell,AMR5.9

C310040007 Holding time for the best cell,AMR5.15

C310040008 Holding time for the best cell,AMR4.75

C310040009 Holding time for the best cell,WB-AMR23.85

C310040010 Holding time for the best cell,WB-AMR23.05

C310040011 Holding time for the best cell,WB-AMR19.85

C310040012 Holding time for the best cell,WB-AMR18.25

C310040013 Holding time for the best cell,WB-AMR15.85

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Counter No. Description

C310040014 Holding time for the best cell,WB-AMR14.25

C310040015 Holding time for the best cell,WB-AMR12.65

C310040016 Holding time for the best cell,WB-AMR8.85

C310040017 Holding time for the best cell,WB-AMR6.60

C310040075 Holding time for the non-best cell,AMR12.2

C310040076 Holding time for the non-best cell,AMR10.2

C310040077 Holding time for the non-best cell,AMR7.95

C310040078 Holding time for the non-best cell,AMR7.4

C310040079 Holding time for the non-best cell,AMR6.7

C310040080 Holding time for the non-best cell,AMR5.9

C310040081 Holding time for the non-best cell,AMR5.15

C310040082 Holding time for the non-best cell,AMR4.75

C310040083 Holding time for the non-best cell,WB-AMR23.85

C310040084 Holding time for the non-best cell,WB-AMR23.05

C310040085 Holding time for the non-best cell,WB-AMR19.85

C310040086 Holding time for the non-best cell,WB-AMR18.25

C310040087 Holding time for the non-best cell,WB-AMR15.85

C310040088 Holding time for the non-best cell,WB-AMR14.25

C310040089 Holding time for the non-best cell,WB-AMR12.65

C310040090 Holding time for the non-best cell,WB-AMR8.85

C310040091 Holding time for the non-best cell,WB-AMR6.60

C310073296 Holding time for the DRNC cell,AMR12.2

C310073297 Holding time for the DRNC cell,AMR10.2

C310073298 Holding time for the DRNC cell,AMR7.95

C310073299 Holding time for the DRNC cell,AMR7.4

C310073300 Holding time for the DRNC cell,AMR6.7

C310073301 Holding time for the DRNC cell,AMR5.9

C310073302 Holding time for the DRNC cell,AMR5.15

C310073303 Holding time for the DRNC cell,AMR4.75

C310073304 Holding time for the DRNC cell,WB-AMR23.85

C310073305 Holding time for the DRNC cell,WB-AMR23.05

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ZTE Confidential Proprietary 48

Counter No. Description

C310073306 Holding time for the DRNC cell,WB-AMR19.85

C310073307 Holding time for the DRNC cell,WB-AMR18.25

C310073308 Holding time for the DRNC cell,WB-AMR15.85

C310073309 Holding time for the DRNC cell,WB-AMR14.25

C310073310 Holding time for the DRNC cell,WB-AMR12.65

C310073311 Holding time for the DRNC cell,WB-AMR8.85

C310073312 Holding time for the DRNC cell,WB-AMR6.60

C310073296 Holding time for the DRNC cell,AMR12.2

C310073297 Holding time for the DRNC cell,AMR10.2

C310073298 Holding time for the DRNC cell,AMR7.95

C310073299 Holding time for the DRNC cell,AMR7.4

C310073300 Holding time for the DRNC cell,AMR6.7

C310073301 Holding time for the DRNC cell,AMR5.9

C310073302 Holding time for the DRNC cell,AMR5.15

C310073303 Holding time for the DRNC cell,AMR4.75

C310073304 Holding time for the DRNC cell,WB-AMR23.85

C310073305 Holding time for the DRNC cell,WB-AMR23.05

C310073306 Holding time for the DRNC cell,WB-AMR19.85

C310073307 Holding time for the DRNC cell,WB-AMR18.25

C310073308 Holding time for the DRNC cell,WB-AMR15.85

C310073309 Holding time for the DRNC cell,WB-AMR14.25

C310073310 Holding time for the DRNC cell,WB-AMR12.65

C310073311 Holding time for the DRNC cell,WB-AMR8.85

C310073312 Holding time for the DRNC cell,WB-AMR6.60

5.2 Alarm List

No related alarm list.

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6 Glossary

A

AMR Adaptive Multi-Rate

AMRC Adaptive Multi-Rate Control

AMR-NB Adaptive Multi-Rate Narrow-Band

AMR-WB Adaptive Multi-Rate Wide-Band

C

CN Core Network

D

D-TCP Dedicated Transmitting Carrier Power

I

IAM Initial Address Message

IuUP Iu User Plane

M

MSC Mobile Switch Center

N

NAS Non-Access-Stratum

O

OoBTC Out-of-Band Transcoder Control

P

PCM Pulse Code Modulation

AMR-NB&AMR-NB Feature Guide

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PSTN Public Switched Telephone Network

Q

QoS Quality of Service

O-MSC Originating Mobile Switch Center

R

RAB Radio Access Bearer

RFC RAB sub-Flow Combination

RFCI RAB sub-Flow Combination Indicator

RL Radio Link

RX Receive

RNC Radio Network Controller

S

SCR Source Controlled Rate

SDU Service Data Unit

SID Silence Information Description

SRNC Serving RNC

T

TC Transcoder

TCP Transmitting Carrier Power

TFC Transport Format Combination

TFO Tandem Free Operation

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T-MSC Terminating Mobile Switch Center

TrFO Transcoder Free Operation

TX Transmit

U

UMTS Universal Mobile Telecommunications System