DCCH Huawei

WCDMA RAN

DCCC
Feature Parameter Description Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

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WCDMA RAN DCCC

Contents

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

2 Overview .....................................................................................................................................2-1 3 DCCC Based on Traffic Volume ............................................................................................3-1
3.1 Overview ....................................................................................................................................... 3-1 3.2 Traffic Volume Measurement ........................................................................................................ 3-2 3.3 Rate Adjustment ............................................................................................................................ 3-3

4 DCCC Based on Throughput .................................................................................................4-1
4.1 Overview ....................................................................................................................................... 4-1 4.2 Throughput Measurement ............................................................................................................. 4-1 4.3 Rate Adjustment ............................................................................................................................ 4-3

5 DCCC Based on LDR ...............................................................................................................5-1
5.1 Overview ....................................................................................................................................... 5-1 5.2 Rate Adjustment Based on LDR ................................................................................................... 5-1 5.3 Penalty for Rate Increase Failure.................................................................................................. 5-2

6 Link Stability Control for BE ..................................................................................................6-1
6.1 Overview ....................................................................................................................................... 6-1 6.2 Basic Principle ............................................................................................................................... 6-1 6.2.1 Overview ............................................................................................................................... 6-1 6.2.2 UL Stability Control ............................................................................................................... 6-3 6.2.3 DL Stability Control ............................................................................................................... 6-4 6.3 Link Stability Measurement ........................................................................................................... 6-6 6.4 DCCC Based on Link Stability....................................................................................................... 6-9

7 Parameters .................................................................................................................................7-1 8 Counters ......................................................................................................................................8-1 9 Glossary ......................................................................................................................................9-1 10 Reference Documents .........................................................................................................10-1

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WCDMA RAN DCCC

1 Introduction

1 Introduction
1.1 Scope
This document describes the Dynamic Channel Configuration Control (DCCC).

1.2 Intended Audience
This document is intended for:
  

Personnel who are familiar with WCDMA basics Personnel who need to understand DCCC Personnel who work with Huawei products

1.3 Change History
This section provides information on the changes in different document versions. There are two types of changes, which are defined as follows:
 

Feature change: refers to the change in the DCCC feature. Editorial change: refers to the change in wording or the addition of the information that was not described in the earlier version.

Document Issues
The document issues are as follows:
  

01 (2011-04-30) Draft B (2011-03-30) Draft A (2010-12-30)

01 (2011-04-30)
This is the document for the first commercial release of RAN13.0. Compared with issue Draft B (2011-03-30) of RAN13.0, this issue has no change.

Draft B (2011-03-30)
This is the draft of the document for RAN13.0. Compared with Draft A (2010-12-30) of RAN13.0, this issue optimizes the description.

Draft A (2010-12-30)
This is the draft of the document for RAN13.0. This is a new document.

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2 Overview

2 Overview
BE services consist of interactive services and background services. The rates of BE services fluctuate greatly. Adjusting service rates dynamically according to user's activities can improve the resource usage. Adjusting service rates dynamically according to radio environments can improve the stability of radio links. DCCC (WRFD-021101 Dynamic Channel Configuration Control) is mainly used to control the rate of BE services on the DCH and E-DCH. Table 2-1 lists the functions of DCCC. Table 2-1 Functions of DCCC DCCC type DCCC Based on Traffic Volume DCCC Based on Throughput DCCC Based on LDR Description RNC increases or decreases the rate of DCH BE services based on the traffic volume measured in the RLC buffer in both UL and DL. RNC increases or decreases the rate of DCH/E-DCH BE services based on the throughput measured. When the cell enters the basic congestion state, RNC decreases the rate of DCH/E-DCH BE services. When the cell exits from the basic congestion state, RNC increases the rate of DCH/E-DCH BE services through the DCCC function.

Link Stability Control Link stability control is applicable to DCH BE services. Link quality is measured through the UE TX power or BLER in the UL or through the TCP or RLC PDU retransmission ratio in the DL. The RNC performs rate decrease or rate increase or handover based on the link quality.

The DCCC function is controlled by the DraSwitch > DRA_DCCC_SWITCH parameter. The UL DCCC based on traffic volume function is invalid for the BE service whose maximum UL rate is below or equal to the UL rate threshold for DCCC specified by UlDcccRateThd. Thus, excessive signaling procedures can be avoided. The DL rate is limited in the same way. The DL rate threshold is specified by DlDcccRateThd. HSUPA DCCC and HSUPA dynamic CE resource management cannot be used simultaneously. For details about HSUPA dynamic CE resource management, see the HSUPA Feature Parameter Description.


If all the cells in the active set support HSUPA dynamic CE resource management, the BE service rate is adjusted to the MBR (the rate need not be adjusted if the current rate is already the MBR), and HSUPA DCCC is invalid. If any cell in the active set does not support HSUPA dynamic CE resource management, HSUPA DCCC is valid.



If dynamic CE resource management is enabled for the entire network, disable HSUPA DCCC.

For DCCC of E-DCH BE services and DCCC rate adjustment of DCH BE services, two strategies are available, which can be specified by the parameter DcccStg or HsupaDcccStg:


The rate can be either increased or decreased as required.

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

2 Overview

The rate can only be increased and not be decreased. This strategy is recommended if the network resources are sufficient. When the UE is in the low active state, the UE state is changed to CELL_FACH or CELL_PCH/URA_PCH.

HSUPA DCCC has the following impacts on network performance:
 

More signaling exchange failures due to excessive DCCC actions in areas with weak coverage, increasing the PS call drop rate Lack of support from certain UEs

When HSUPA state transition from CELL_DCH to CELL_FACH or from CELL_FACH to CELL_DCH is enabled, uplink Uu interface resource and CE resource consumption can be reduced. This, however, may lead to more signaling exchanges, increasing the probability of call drops in areas with weak coverage.

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3 DCCC Based on Traffic Volume

3 DCCC Based on Traffic Volume
3.1 Overview
DCCC based on traffic volume improves the utilization of base station transmission power, OVSF codes, Iub transmission resources and CEs. Figure 3-1 DCCC based on traffic volume

Events 4a and 4b indicate different states of UL and DL traffic volumes. The RNC can increase or decrease service rates according to the reported events. Event 4a indicates that the traffic volume is high, and thus the RNC needs to increase service rates. Event 4b indicates that the traffic volume is low, and thus the RNC needs to decrease service rates. The following table shows the basic principle of DCCC based on traffic volume. Table 3-1 DCCC Based on Traffic Volume Direction Event Event Description DCCC

DCH UL/DL 4a 4b

RLC BO becomes greater than some threshold Increase rate RLC BO becomes less than some threshold Decrease rate

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3 DCCC Based on Traffic Volume

3.2 Traffic Volume Measurement
Measurement Event Description Item UL/DL traffic 4a/4b volume The RNC measure the downlink RLC buffer occupancy and the UE measures the uplink RLC buffer occupancy. If the traffic volume is excessively high, and event 4a is triggered and if the traffic volume is excessively low, event 4b is triggered. The traffic volume measurements defined in 3GPP TS 25.331 are applicable to only the UL. For the DL, traffic volume measurements and associated rate adjustment are designed and implemented by Huawei


In the UL, the UTRAN sends to the UE the absolute threshold, time to trigger event 4a or 4b, and pending time after trigger through a MEASUREMENT CONTROL message. The UE sends a report on event 4a or 4b through a MEASUREMENT REPORT message. In the DL, measurement control is also performed through messages. The difference is that all the interactions occur within the RNC in the DL.



For event 4a or 4b in the UL or DL:


If the traffic volume is above the threshold of event 4a specified by Event4aThd for a period of time specified by TimetoTrigger4A, the UE/RNC sends a report on event 4a. In a period of time specified by the parameter PendingTime4A after sending the report on event 4a, the UE/RNC does not send it any more. If the traffic volume is below the threshold of event 4b specified by Event4bThd for a period of time specified by TimetoTrigger4B, the UE/RNC sends a report on event 4b. After sending the report on event 4b, the UE/RNC does not send it again in a period of time specified by PendingTime4B.



Rate adjustment based on traffic volume takes effect in the UL and DL separately. Associated parameters are configured in the UL and DL separately. The parameter Direction specifies whether the parameters are configured in the UL or DL. Figure 3-2 Triggering 4a for an increase in traffic volume

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3 DCCC Based on Traffic Volume

Figure 3-3 Triggering 4b for a decrease in traffic volume

3.3 Rate Adjustment
The prerequisites for UL rate adjustment based on traffic volume are as follows:
  

The UL of the UE is in the link stable state. For details, see section 6 "Link Stability." The UL of the cell is not in the basic congestion state. If the UL of the cell is in the basic congestion state, only the service rate lower than the GBR can be increased to the GBR.

The prerequisites for DL rate adjustment based on traffic volume are as follows:
  

If the function of DL rate adjustment based on link quality is enabled, the DL must be stable. The DL of the cell is not in the basic congestion state. If the DL of the cell is in the basic congestion state, only the service rate lower than the GBR can be increased to the GBR.

After receiving a report on event 4b, the RNC triggers rate decrease. After receiving a report on event 4a, the RNC triggers rate increase. The minimum value to which the rate can be decreased is the UL/DL rate threshold for DCCC. The maximum value to which the rate can be increased is the MBR. The triggering and processing in the UL and DL are performed separately. The UL and DL is processing in the same way.
 

If the UL/DL rate decrease level is 2_Rates, the rate is decreased directly to the UL/DL rate threshold for DCCC. If the UL/DL rate increase level is 2_Rates and the current rate is below the UL/DL DCCC rate threshold, the current rate is increased to the UL/DL DCCC rate threshold. If the current rate is above or equal to the UL/DL rate threshold for DCCC and lower than the MBR, the current rate is increased to the MBR. If the UL/DL rate decrease level is 3_Rates and the current rate is the MBR, the current rate is decreased to the UL/DL middle rate threshold and then to the UL/DL rate threshold for DCCC. If the current rate is lower than the MBR but higher than the UL/DL rate threshold for DCCC, the current rate is decreased to the UL/DL rate threshold for DCCC.



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

3 DCCC Based on Traffic Volume

If the UL/DL rate increase level is 3_Rates and the current rate is below the UL/DL DCCC rate threshold, the rate is increased to the UL/DL rate threshold for DCCC. If the current rate is equal to the UL/DL rate threshold for DCCC, the current rate is increased to the UL/DL middle rate threshold and then to the MBR. If the current rate is lower than the MBR but higher than the UL/DL rate threshold for DCCC, the current rate is increased to the MBR.

Table 3-2 lists the configuration items used in rate adjustment based on traffic volume. Table 3-2 Configuration items used in rate adjustment based on traffic volume Configuration Item Description

UL rate threshold for DCCC Specified by the parameter UlDcccRateThd. DL rate threshold for DCCC Specified by the parameter DlDcccRateThd. UL middle rate threshold The parameter UlMidRateCalc specifies whether the UL middle rate threshold is set automatically or manually. If the parameter UlMidRateCalc specifies manual setting, the UL middle rate can be specified by the parameter UlMidRateThd. The parameter DlMidRateCalc specifies whether the DL middle rate threshold is set automatically or manually. If the parameter DlMidRateCalc specifies manual setting, the DL middle rate can be specified by the parameter DlMidRateCalc. Specified by the parameter UlRateUpAdjLevel. Specified by the parameter UlRateDnAdjLevel. Specified by the parameter DlRateUpAdjLevel. Specified by the parameter DlRateDnAdjLevel.

DL middle rate threshold

UL rate increase level UL rate decrease level DL rate increase level DL rate decrease level

Figure 3-4 Rate adjustment when the UL rate increase and decrease level are 3_Rates

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4 DCCC Based on Throughput

4 DCCC Based on Throughput
4.1 Overview
This section involves the feature "WRFD-01061208 HSUPA DCCC." For the DCH and E-DCH, the strategies for rate adjustment based on throughput are different as follows:
 

For throughput-based rate adjustment on the E-DCH, rate increase or decrease can be triggered according to the received event 4a or 4b respectively. For throughput-based rate adjustment on the DCH in the UL or DL, only rate decrease can be triggerred according to the received event 4b.

The switches for rate adjustment based on throughput are as follows:
 

To enable throughput-based rate adjustment on the DCH, turn on the switch CfgSwitch > THROU_DCCC_SWITCH (SET UCORRMALGOSWITCH). To enable throughput-based rate adjustment for HSUPA, turn on the switch DraSwitch > DRA_HSUPA_DCCC_SWITCH (SET UCORRMALGOSWITCH).

The following table shows the basic principle of DCCC based on throughput. Table 4-1 DCCC Based on Throughput Direction E-DCH UL Event Event description 4a 4b DCH UL/DL 4b DCCC

Throughput of radio bearer becomes greater than some threshold Increase rate Throughput of radio bearer becomes less than some threshold Decrease rate

Throughput of radio bearer becomes greater than some threshold Decrease rate

4.2 Throughput Measurement
Measurement Item Event Description UL/DL throughput 4a/4b In each measurement period, the RNC MAC-d measures the traffic volume of radio bearers (RBs). Then, RNC divides the measurement result by the measurement period to obtain the throughput.

The throughput measurement period can be specified by the parameter E2FThrouMeasPeriod for services on the E-DCH and DchThrouMeasPeriod for services on the DCH. Assume that AvgThroughput represents the throughput of an RB during a measurement period. Then:


For E-DCH, If the AvgThroughput is above the threshold of event 4a for a period of time specified by EdchTimetoTrigger4A and the current time is not in the pending time after trigger, then event 4a is triggered. After event 4a is triggered, it cannot be triggered any more in the period of time specified by EdchPendingTime4A. For E-DCH, If the AvgThroughput is below the threshold of event 4b for a period of time specified by EdchTimetoTrigger4B and the current time is not in the pending time after trigger, then event 4b is triggered. After event 4b is triggered, it cannot be triggered any more in the period of time specified by EdchPendingTime4B.



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

4 DCCC Based on Throughput

For DCH, If the AvgThroughput is below the threshold of event 4b for a period of time specified by DchThrouTimetoTrigger4B and the current time is not in the pending time after trigger, then event 4b is triggered. After event 4b is triggered, it cannot be triggered any more in the period of time specified by DchThrouPendingTime4B.

Figure 4-1 shows the mechanism of measuring the throughput and reporting events 4a and 4b. In this example, the time to trigger event 4a or 4b is three consecutive measurement periods, and the pending time after trigger is four consecutive measurement periods. Figure 4-1 Mechanism of measuring the throughput and reporting events 4a and 4b

Reports on events 4a and 4b are based on the set of adjustment rates and throughput thresholds {(R1, TR1), ..., (Ri, TRi), ..., (RN, TRN)}. Ri is an adjustment rate and TRi is the corresponding throughput threshold.


For services on the DCH, the Ri adjustment rate set is {rate threshold for DCCC, middle rate, maximum rate}. The throughput threshold is as follows: Rt-1 = Rt-1 x 90%. For details of the parameters of the DCH rate set, see 3 DCCC Based on Traffic Volume. For services on the E-DCH, Ri is the adjustment rate set specified by EdchRateAdjustSet, and RN is the maximum rate. TRi = Ri x (Threshold rate ratio)i (see Table 4-2 for details). TRMBR = MBR x (Threshold rate ratio)MBR.
− If − If



Rt < MBR ≤ Rt+1 (1 ≤ t ≤ N–1), the set of E-DCH adjustment rates and associated throughput thresholds is: {(R1, TR1), ..., (Ri, TRi), ..., (Rt, TRt), ( MBR, TRMBR)}. MBR > RN, the set of E-DCH adjustment rates and associated throughput thresholds is: {(R1, TR1), ..., (Ri, TRi), ..., (RN, TRN), ( MBR, TRMBR)}.

Assume that Rt is the current service rate. The threshold settings of events 4a and 4b are as follows:
 

The 4a threshold for E-DCH service is TRt, and the 4b threshold is Rt-1. If the current HSUPA adjustment rate is the minimum rate, the threshold of event 4b is specified by E2FThrouThd. The 4b threshold for DCH service is TRt-1. TRt-1 = Rt-1 x 90%

Table 4-2 Threshold rate ratios for different E-DCH rates Rate 8 kbit/s 16 kbit/s 32 kbit/s 64 kbit/s Threshold Rate Ratio 90% 80% 80% 90%

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4 DCCC Based on Throughput

Rate 128 kbit/s 144 kbit/s 256 kbit/s 384 kbit/s 608 kbit/s 1280 kbit/s 2048 kbit/s 2720 kbit/s 5440 kbit/s 11480kbit/s

Threshold Rate Ratio 80% 80% 80% 75% 75% 75% 75% 70% 70% 70%

4.3 Rate Adjustment
Except that rate increase cannot be performed on the DCH, the rate adjustment procedures based on throughput on the E-DCH and DCH are the same.
 

After a report on event 4a is received, the rate is increased by one level, that is, from Rt to Rt+1. If the current rate is the MBR, no action is required. After a report on event 4b is received, the rate is decreased to a rate that is close to the corresponding throughput. If the reported throughput is TR and TRi-1 <TR < TRi, then the RB adjustment rate is Ri.

Figure 4-2 Average throughput between TRi–1 and TRi

If the rate adjustment strategy is only rate increase rather than rate decrease, the rate adjustment method is the same as that mentioned earlier, but rate decrease is not performed after the report on event 4b is received. Instead, state transition is performed.

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5 DCCC Based on LDR

5 DCCC Based on LDR
5.1 Overview
Basic congestion may trigger LDR, and LDR can reduce load by reducing the rate of BE services. For details, see the Load Control Feature Parameter Description. When the cell enters the basic congestion state, the RNC decreases BE rates through the DCCC function to relieve the congestion. The following table shows the basic principle of DCCC based on LDR. Table 5-1 DCCC based on LDR Direction Event Event description DCCC Decrease rate for UEs selected by LDR until congestion is relieved.

DCH UL/DL or Basic congestion Cell load (uplink or downlink E-DCH UL power) is greater than LDR trigger threshold DCH UL/DL or Congestion E-DCH UL relieved + 4a

Cell leaves basic congestion The previously downgraded bearers state and receives 4a may have their rate increased.

5.2 Rate Adjustment Based on LDR
When LDR triggers BE service rate decrease, the selected RAB rate is decreased to the target rate. The target rates are different for DCH RAB and HSUPA RAB.


For a DCH RAB, the rate adjustment level is fixed to 3_Rates. If the rate decrease level (UlRateDnAdjLevel or DlRateDnAdjLevel) is set to 2_Rates, the middle rate is calculated by the RNC and the middle rate is approximately equal to the MBR divided by two.
− If

the current rate is equal to the MBR, it is decreased to the UL/DL middle rate threshold (UlMidRateThd/DlMidRateThd). The middle rate threshold is the same as that described in section 3 "DCCC Based on Traffic Volume." the current rate is higher than the GBR but lower than the MBR, it is decreased to the GBR.

− If 

For an E-DCH RAB, a rate is selected from the HSUPA UL rate adjustment set (EdchRateAdjustSet) as the target rate for rate decrease.
− The − The −

target rate must be smaller than but the closest to the current rate. target rate must be greater than or equal to the GBR.

For details about the HSUPA UL rate adjustment set (EdchRateAdjustSet), see section 4.2 "Throughput Measurement."

Figure 5-1 shows an example of UL DCH BE rate decrease and increase.

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5 DCCC Based on LDR

Figure 5-1 UL BE rate decrease and increase based on LDR

DCCC based on LDR can trigger only rate decrease while the rate increase is stilled controlled by DCCC based on Traffic Volume.

5.3 Penalty for Rate Increase Failure
A rate increase failure may be due to lack of Iub resources, lack of cell resources, NodeB exception, UE exception, or other causes. If rate increase failures occur frequently, rate increase attempts have to be prevented for a period of time. Figure 5-2 shows the procedure for penalizing rate increase failures when the adjustment level is 2_Rates.

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Figure 5-2 Rate increase failure penalty in the case of 2_Rates adjustment

The symbols in Figure 5-2 are described as follows:
   

1–8: indicating that event 4a is reported from the UE S1: indicating that the cell is in the normal state S2: indicating that the cell is in the congestion state S3: indicating that the cell is restored from the congestion state

After the first rate increase fails, the timer (MoniTimeLen) for detecting DCCC rate increase failures is started. If the number of the rate increase failures is above or equal to the corresponding threshold (FailTimeTh) during the period (MoniTimeLen), the penalty timer is started. No rate increase attempt is allowed before the penalty timer expires. When the cell is in the basic congestion state, the rates lower than the GBR can be increased. Whether rate increase can succeed depends on whether the required resources are sufficient.

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6 Link Stability Control for BE

6 Link Stability Control for BE
6.1 Overview
When the UL or DL quality deteriorates, the link stability control function triggers a rate decrease, an inter-frequency handover, or an inter-RAT handover, so as to guarantee the stability of links. The UL stability control function is applicable to only the scenario of single RAB or 1CS AMR/VP + 1PS BE combined services. For 1CS + 1PS combined services, the link stability control function for PS BE services is performed. The link stability control function switches for different services are set through the SET UQOSACT command. The link stability control functions for different services are as follows:


Link Stability Control for AMR For details, see AMR Feature Parameter Description Link Stability Control for VP For details, see Video Phone Feature Parameter Description Link Stability Control for BE





6.2 Basic Principle
6.2.1 Overview
Link stability control for BE services is implemented by the RNC. Excessively high TX power means that associated links are unstable. In this case, link stability control is performed through rate decrease, QoS handover (inter-frequency or inter-RAT) to ensure link stability and the QoS. Rate decrease in link stability control is implemented through DCCC. Figure 6-1 Link stability control

Different rate has different coverage. When UE moves around in a cell, the link quality varies. The function of link stability control checks the link quality and triggers DCCC/Handover to ensure QoS perceived by user and avoid call drop due to power limitation The following table shows the basic principle of link stability control for BE.

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6 Link Stability Control for BE

Table 6-1 Link stability control for BE Direction Event Event description DCCC Decrease rate Handover Start measurement for handover

DCH DL Ea or Ea + A Tx code power becomes larger than threshold (Ea). RLC PDU retransmission ratio becomes larger than threshold (A) Eb Fb Fa + 4a Tx code power becomes less than threshold (Eb). Tx code power becomes larger than threshold (Fb). Tx code power becomes less than threshold (Fa). Traffic volume becomes larger than threshold (4a). DCH UL 6D or 6A1 or UE Tx power becomes larger than 5A or 6A1 + absolute threshold (6A1/6D) 5A Uplink BLER becomes larger than threshold (5A) 6B1 6A2 6B2 + 4a UE Tx power becomes less than absolute threshold UE Tx power becomes larger than absolute threshold (6A2 event) UE Tx power becomes less than absolute threshold (6B2). Traffic volume becomes larger than threshold (4a).

Stop decreasing Stop measurement rate for handover Stop Increasing rate Increase rate -

Decrease rate

Start measurement for handover

Stop decreasing Stop measurement rate for handover Stop Increasing rate Increase rate or D2E channel switch

For UL trigger conditions:
   

When BeUlQos6DMcSwitch is set to ON, event 6D triggers UL stability control. When BeUlEvTrigInd is set to SINGLE and BeUlQos6A1McSwitch is set to YES, event 6A1 triggers UL stability control. When BeUlEvTrigInd is set to SINGLE and BeUlQos5AMcSwitch is set to YES, event 5A triggers UL stability control. When BeUlEvTrigInd is set to COMBINE, only combined events 6A1 + 5A can trigger UL stability control.

For DL trigger conditions:
 

When SrncBeDlRlcQosSwitch is set to YES, TCP and RLC retransmission (event A + event Ea) trigger DL stability control. When SrncBeDlRlcQosSwitch is set to NO, only TCP (event Ea) triggers DL stability control.

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6 Link Stability Control for BE

6.2.2 UL Stability Control
Figure 6-2 shows the UL stability control procedure. Figure 6-2 UL stability control procedure

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6 Link Stability Control for BE

Note 1: UL stability control actions are taken sequentially. If an action fails, the RNC takes the next action. The sequence is set on the LMT through the following parameters: - First BE UL QoS enhancement action: BeUlAct1 - Second BE UL QoS enhancement action: BeUlAct2 - Third BE UL QoS enhancement action: BeUlAct3 Note 2: A, B, and C in the figure denote the following actions: - A denotes a rate decrease. - B denotes an inter-frequency handover. - C denotes an inter-RAT handover. Note 3: Assume that the previous stability control procedure includes rate decrease actions and that the current rate is higher than the UL full-coverage rate (UlFullCvrRate). Then, the current stability control procedure excludes the actions presented in dashed boxes. Note 4: The wait timer for BE UL rate adjustment is specified by the BeUlRateAdjTimerLen parameter.

6.2.3 DL Stability Control
Figure 6-3 shows the DL stability control procedure.

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6 Link Stability Control for BE

Figure 6-3 DL stability control procedure

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6 Link Stability Control for BE

Note 1: DL stability control actions are taken sequentially. If an action fails, the RNC takes the next action. The sequence is set on the LMT through the following parameters: First BE DL QOS enhancement action: BeDlAct1 Second BE DL QOS enhancement action: BeDlAct2 Third BE DL QOS enhancement action: BeDlAct3 Note 2: A, B, and C in the figure indicate the following actions: A indicates a rate decrease. B indicates an inter-frequency handover. C indicates an inter-RAT handover. Note 3: Assume that the previous stability control procedure includes rate decrease actions and that the current rate is higher than the DL full-coverage rate (DlFullCvrRate). Then, the current stability control procedure excludes the actions presented in dashed boxes.

6.3 Link Stability Measurement
Overview
Measurement Item UL TX power of the UE Event Description

6A1/6B1 The UE measures UL TX power and report the events to the RNC. 6A2/6B2 6D

DL TX power of the DPCCH pilot

Ea/Eb Fa/Fb

The NodeB periodically measures and reports downlink DPCCH pilot power to the RNC.The RNC converts it to the DPDCH power and triggers the respective events by comparing the power with the the threshold. The RNC MAC-d calculates the BLER. When the BLER of the uplink is above 5A threshold, the RNC triggers the events.I The RNC calculate the retransmission ratio according to the received ACKs and NACKs. If the RLC PDU retransmission ratio is above the threshold of event A, the RNC triggers the events.

UL BLER DL RLC PDU retransmission

5A A

UL Event 6A1/6A2/6B1/6B2/6D
According to the measurement result of UE TX power in the UL, event 6A, 6B, or 6D is triggered. For details about triggering modes, see AMR Feature Parameter Description. The following new triggering time parameters are introduced: UlBeTrigTime6A1, UlBeTrigTime6A2, UlBeTrigTime6B1, UlBeTrigTime6B2, and UlBeTrigTime6D.

Ul Event 5A
The UL BLER measurement may trigger event 5A. The RNC defines a sliding window of a certain length through the parameter StaBlkNum5A. Each time the RNC receives a data block, it compares the number of error blocks in the sliding window with the threshold of event 5A specified by the parameter Thd5A. If the number of error blocks is above or equal to the threshold of event 5A, event 5A is triggered. Then, the RNC can trigger again event 5A only after the number of received error blocks reaches HangBlockNum5A, to avoid excessive reporting of event 5A.
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Figure 6-4 shows the mechanism of triggering and reporting event 5A. Figure 6-4 Mechanism of triggering and reporting event 5A

DL Event Ea/Eb/Fa/Fb
Event E is used to check whether the DL power is excessively high. Event E can trigger a DL rate decrease. Event E consists of event Ea and event Eb. Event F is used to check whether the current TX power allows a rate increase. Event F consists of event Fa and event Fb. According to the measurement result of DL TX power in the pilot field of the DPCCH, event E or F is triggered as follows:


If the TX power in the pilot field of the DPCCH is above the threshold of event Ea or Fa for a period of time specified by DlBeTrigTimeE or DlBeTrigTimeF, event Ea or Fa is triggered. Then, the NodeB periodically reports the measurement results of TX power to the RNC. The period for the NodeB to report measurement results is specified by the parameter ChoiceRptUnitForBeE, TenMsecForBeE, or MinForBeE for event E and by the parameter ChoiceRptUnitForBeF, TenMsecForBeF, or MinForBeF for event F. If the TX power in the pilot field of the DPCCH is below the threshold of event Eb or Fb for a period of time, event Eb or Fb is triggered. Then, the NodeB stops reporting the measurement results of TX power.



The thresholds of events Fa and Fb are the same. The threshold of event F cannot be above the threshold of event Ea. Otherwise, the threshold of event F is set to the threshold of event Ea.

The threshold of event E is related to services. The relative threshold of event Ea or Eb is calculated according to the following formula: E threshold = Pmax –ThdEa/ThdEb + PO3 In the equation:
   

E threshold is the relative threshold of event Ea or Eb. ThdEa/ ThdEb is the relative threshold of event Ea or Eb respectively. Pmax is the maximum DL TX power of DPDCHs PO3 is the offset from the TX power in the pilot field of the DPCCH to the TX power of the DPDCH.

The threshold of event F is related to the current rate and the target rate of rate increase (triggered by event 4a). The threshold of event F is calculated according to the following formula: F threshold = Pmax – ∆p – Pmargin –ThdEa + PO3 In the equation:

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    

6 Link Stability Control for BE

Pmax is the maximum DL TX power of DPDCHs corresponding to the target rate. ∆p is the power difference between the current rate and the target rate. Pmargin is determined by the parameter BePwrMargin for a single service or by the parameter CombPwrMargin for combined services. Ea relative threshold is used to avoid repeated triggering of event Ea after a rate increase. PO3 is the offset from the TX power in the pilot field of the DPCCH to the TX power of the DPDCH.

Figure 6-5 shows the mechanism of reporting event F. Figure 6-5 Mechanism of reporting event F

DL Event A
The DL RLC PDU retransmission ratio is calculated according to the ACK or NACK feedback information. The measurement of RLC PDU retransmission ratio can be set by the parameter SrncBeDlRlcQosSwitch through the SET UQOSACT command. The RLC PDU retransmission ratio is reported to layer 3 from layer 2. Figure 6-6 shows the threshold for reporting the RLC PDU retransmission ratio.

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Figure 6-6 Threshold for reporting the RLC PDU retransmission ratio

The procedure for measuring the RLC PDU retransmission ratio is as follows: 1. Set up a sliding window for calculating the RLC PDU retransmission ratio periodically according to the period of monitoring the retransmission ratio specified by the parameter MoniterPrd. 2. Check whether the RLC PDU retransmission ratio is above the threshold of event A specified by the parameter EventAThred. If it is above the threshold for a period of time, that is, MoniterPrd x TimeToTriggerA, event A is triggered and the RLC PDU retransmission ratio is reported. Event A based on the RLC PDU retransmission ratio is defined by Huawei. It is not a standard event specified by 3GPP specifications. In the period of time (MoniterPrd x TimeToTriggerA) after event A is reported, the RLC PDU retransmission ratio is not calculated any more. If a report on event Ea is already received before a report on event A is received, the system may reduce the DL rate.

6.4 DCCC Based on Link Stability
Rate adjustment based on link stability is applicable to BE services on the DCH. After an event indicating that the link quality is poor is reported, the RNC triggers rate decrease. When the associated conditions are met, the RNC adjusts the service rate to the original one. The rate adjustment methods in the UL and DL are the same. The adjustment processes are performed separately.

Rate Decrease
Rate decrease based on link quality is performed in the following way:
  

The rate decrease level is fixed to 3_Rates. If the rate decrease level (UlRateDnAdjLeveL or DlRateDnAdjLevel) is set to 2_Rates, the middle rate is calculated by the RNC. If the current rate is equal to the MBR, it is decreased to the middle rate threshold specified by UlMidRateThd or DlMidRateThd. If the current rate is higher than the full-coverage rate specified by UlFullCvrRate or DlFullCvrRate but lower than the MBR, it is decreased to UlFullCvrRate or DlFullCvrRate.

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Figure 6-7 Rate adjustment based on link quality when the adjustment level is 3_Rates

Rate Increase
Before rate increase, the RNC checks whether the current power is sufficient. If the power is sufficient, rate increase is triggered by event 4a. In the UL:
 

If the RNC receives a report on event 6B2 but does not receive any report on event 6A2, the channel power is sufficient. In this case, rate increase based on traffic volume can be triggered by event 4a. If the RNC receives a report on event 6A2, no rate increase based on traffic volume can be triggered by event 4a. If the RNC receives a report on event 6B1, rate decrease is stopped and no rate increase can be triggered.

In the DL:
 

If event Fa is reported, you can infer that the DL channel power is sufficient. If event 4a is also reported, a rate increase can be triggered. If event Fb is reported, you can infer that the DL channel power is insufficient. In this case, no rate increase can be triggered.

For details about the procedure of rate increase, see section 3 DCCC Based on Traffic Volume

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7 Parameters
Table 7-1 Parameter description Parameter ID NE BeDlAct1 BSC6900 MML Command SET UQOSACT(Optional) Description Meaning:The first action selected by the QoS control algorithm when the DL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:RateDegrade BeDlAct2 BSC6900 SET UQOSACT(Optional) Meaning:The second action selected by the QoS control algorithm when the DL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:None BeDlAct3 BSC6900 SET UQOSACT(Optional) Meaning:The third action selected by the QoS control algorithm when the DL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:None BePwrMargin BSC6900 ADD UCELLDCCC(Optional) MOD UCELLDCCC(Optional) Meaning:The relative power margin of single BE traffic, used to calculate the triggering threshold of event F, can avoid the fluctuation of traffic rate in case the power becomes restricted after rate is increased GUI Value Range:0~100 Actual Value Range:0~10 Default Value:10 BeUlAct1 BSC6900 SET UQOSACT(Optional) Meaning:The first action selected by the QoS

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control algorithm when the UL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:None BeUlAct2 BSC6900 SET UQOSACT(Optional) Meaning:The second action selected by the QoS control algorithm when the UL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:None BeUlAct3 BSC6900 SET UQOSACT(Optional) Meaning:The third action selected by the QoS control algorithm when the UL QoS of BE service deteriorates.If QoS action is RateDegrade, then the rate will be downsized to the full coverage rate according to 3-rates rule GUI Value Range:None, RateDegrade, InterFreqHO, InterRatHO Actual Value Range:None, RateDegrade, InterFreqHO, InterRatHO Default Value:None BeUlEvTrigInd BSC6900 SET UQOSACT(Optional) Meaning:For BE service, When the parameter is set to SINGLE, an UL event 6A1 or 5A can independently trigger the QoS enhancement action. The 6A1, 5A switch settings decide whether to perform 6A1 or 5A measurement control. When the parameter is set to COMBINE, only combined events 6A1+5A can trigger the QoS enhancement action, and whether to perform 6A1 and 5A measurement is not controlled by the 6A1 and 5A measurement switch GUI Value Range:SINGLE, COMBINE Actual Value Range:SINGLE, COMBINE Default Value:SINGLE BeUlQos5AMc BSC6900 Switch SET UQOSACT(Optional) Meaning:Event 5A measurement switch when BeUlEvTrigInd is set to SINGLE for BE service.

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If this parameter is set to YES, event 5A measurement is delivered GUI Value Range:NO, YES Actual Value Range:NO, YES Default Value:YES BeUlQos6A1M BSC6900 cSwitch SET UQOSACT(Optional) Meaning:Event 6A1 measurement switch when BeUlEvTrigInd is set to SINGLE for BE service. If this parameter is set to YES, event 6A1 measurement is delivered GUI Value Range:NO, YES Actual Value Range:NO, YES Default Value:YES BeUlQos6DMc BSC6900 Switch SET UQOSACT(Optional) Meaning:UL event 6D measurement switch for BE service. If this parameter is set to YES, event 6D measurement is delivered GUI Value Range:NO, YES Actual Value Range:NO, YES Default Value:NO BeUlRateAdjTi BSC6900 merLen SET UQOSACT(Optional) Meaning:Timer to trigger the next QoS enhancement action for UL BE services. This parameter specifies the duration of waiting for the UL QoS enhanced acknowledgement after UL rate adjustment. The timer starts when the BE UL rate adjustment procedure is triggered, and stops when the RNC receives a 6B1/6B2 event or when the timer expires GUI Value Range:20~64000 Actual Value Range:20~64000 Default Value:3000 CfgSwitch BSC6900 SET Meaning:Channel configuration strategy switch UCORRMALGOSWITCH(O group. ptional) 1) CFG_DL_BLIND_DETECTION_SWITCH: When the switch is on, the DL blind transport format detection function is used for single SRB and AMR+SRB bearers. Note that the UE is only required to support the blind transport format stipulated in 3GPP 25.212 section 4.3.1. 2) CFG_HSDPA_64QAM_SWITCH: When the switch is on, 64QAM can be configured for the HSDPA service. 3) CFG_HSDPA_DC_SWITCH: When the switch is on, DC can be configured for the HSDPA service. 4) CFG_HSDPA_MIMO_SWITCH: When the switch is on, MIMO can be configured for the

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HSDPA service. 5) CFG_HSDPA_MIMO_WITH_64QAM_SWITC H: When the switch is on and the switches for 64QAM and MIMO are on, 64QAM+MIMO can be configured for the HSDPA service 6) CFG_HSPA_DTX_DRX_SWITCH: When the switch is on, DTX_DRX can be configured for the HSPA service. 7) CFG_HSPA_HSSCCH_LESS_OP_SWITCH: When the switch is on, HS-SCCH Less Operation can be configured for the HSPA service. 8) CFG_HSUPA_16QAM_SWITCH: When the switch is on, 16QAM can be configured for the HSUPA service. 9) CFG_IMS_SUPPORT_SWITCH: When the switch is on and the IMS license is activated, the RNC supports IMS signaling. 10) CFG_LOSSLESS_DLRLC_PDUSIZECHG_S WITCH: When the switch is on, DL lossless RLC PDU size change is supported. 11) CFG_LOSSLESS_RELOC_CFG_SWITCH: When the switch is on and the UE supports lossless relocation, the RNC configures lossless relocation for PDCP parameters if the requirements of RLC mode, discard mode, and sequential submission are met. Then, lossless relocation is used for the UE. 12) CFG_MULTI_RAB_SWITCH: When the switch is on, the RNC supports multi-RABs combinations such as 2CS, 2CS+1PS, 1CS+2PS, and 2PS. 13) CFG_PDCP_IPV6_HEAD_COMPRESS_SWIT CH: When the switch is on and the PDCP Header compression license is activated, the PDCP header compression algorithm for IPv6 is used at the RNC. 14) CFG_PDCP_RFC2507_HC_SWITCH: When the switch is on and the PDCP Header compression license is activated, the PDCP RFC2507 header compression algorithm is used for the RNC. 15) CFG_PDCP_RFC3095_HC_SWITCH: When the switch is on and the PDCP ROHC license is activated, the PDCP RFC3095 header compression algorithm is used for the

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RNC. 16) CFG_PTT_SWITCH: When this switch is on, the RNC identifies the PTT user based on the QoS attributes in the RAB assignment request message. Then, the PTT users are subject to special processing. 17) CFG_RAB_REL_RMV_HSPAPLUS_SWITCH: When this switch is on and if an RAB release is performed, the RNC decides whether to fall back a certain HSPA(HSPA+) feature based on the requirement of remaining traffic carried by the UE. That is, if an HSPA+ feature is required by the previously released RAB connection but is not required in the initial bearer policy of the remaining traffic, the RNC falls back the feature to save the transmission resources. The HSPA+ features that support the fallback are MIMO, 64QAM, MIMO+64QAM, UL 16QAM, DC-HSDPA, and UL TTI 2ms. 18) CFG_EDPCCH_BOOSTING_SWITCH: When the switch is on, Boosting can be configured for the HSUPA service. 19) CFG_HSDPA_DCMIMO_SWITCH: When this switch is turned on, DC+MIMO can be configured for the HSDPA service. 20) CFG_FREE_USER_SWITCH: When this switch is turned on, special handling for free access user is enabled. 21) CFG_DC_MIMO_DYNAMIC_SELECT_SWITC H: When this switch is turned on, the RNC determines whether to enable the DC-HSDPA or MIMO feature for a newly admitted user based on the cell load and the number of HSDPA users GUI Value Range:CFG_DL_BLIND_DETECTION_SWITC H, CFG_HSDPA_64QAM_SWITCH, CFG_HSDPA_DC_SWITCH, CFG_HSDPA_MIMO_SWITCH, CFG_HSDPA_MIMO_WITH_64QAM_SWITC H, CFG_HSPA_DTX_DRX_SWITCH, CFG_HSPA_HSSCCH_LESS_OP_SWITCH, CFG_HSUPA_16QAM_SWITCH, CFG_IMS_SUPPORT_SWITCH, CFG_LOSSLESS_DLRLC_PDUSIZECHG_S WITCH, CFG_LOSSLESS_RELOC_CFG_SWITCH, CFG_MULTI_RAB_SWITCH, CFG_PDCP_IPV6_HEAD_COMPRESS_SWIT CH, CFG_PDCP_RFC2507_HC_SWITCH, CFG_PDCP_RFC3095_HC_SWITCH,

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CFG_PTT_SWITCH, CFG_RAB_REL_RMV_HSPAPLUS_SWITCH, CFG_EDPCCH_BOOSTING_SWITCH, CFG_HSDPA_DCMIMO_SWITCH, CFG_FREE_USER_SWITCH, CFG_DC_MIMO_DYNAMIC_SELECT_SWITC H Actual Value Range:CFG_DL_BLIND_DETECTION_SWITC H, CFG_HSDPA_64QAM_SWITCH, CFG_HSDPA_DC_SWITCH, CFG_HSDPA_MIMO_SWITCH, CFG_HSDPA_MIMO_WITH_64QAM_SWITC H, CFG_HSPA_DTX_DRX_SWITCH, CFG_HSPA_HSSCCH_LESS_OP_SWITCH, CFG_HSUPA_16QAM_SWITCH, CFG_IMS_SUPPORT_SWITCH, CFG_LOSSLESS_DLRLC_PDUSIZECHG_S WITCH, CFG_LOSSLESS_RELOC_CFG_SWITCH, CFG_MULTI_RAB_SWITCH, CFG_PDCP_IPV6_HEAD_COMPRESS_SWIT CH, CFG_PDCP_RFC2507_HC_SWITCH, CFG_PDCP_RFC3095_HC_SWITCH, CFG_PTT_SWITCH, CFG_RAB_REL_RMV_HSPAPLUS_SWITCH, CFG_EDPCCH_BOOSTING_SWITCH, CFG_HSDPA_DCMIMO_SWITCH, CFG_FREE_USER_SWITCH, CFG_DC_MIMO_DYNAMIC_SELECT_SWITC H Default Value:None ChoiceRptUnit BSC6900 ForBeE ADD Meaning:This parameter specifies the reporting UCELLQUALITYMEAS(Opti period of the event E of the BE service. The onal) unit of the reporting period can be 10 ms or minute MOD UCELLQUALITYMEAS(Opti GUI Value Range:TEN_MSEC, MIN onal) Actual Value Range:TEN_MSEC, MIN Default Value:TEN_MSEC ChoiceRptUnit BSC6900 ForBeF ADD Meaning:This parameter specifies the reporting UCELLQUALITYMEAS(Opti period of the event F of the BE service. The onal) unit of the reporting period can be 10 ms or minute MOD UCELLQUALITYMEAS(Opti GUI Value Range:TEN_MSEC, MIN onal) Actual Value Range:TEN_MSEC, MIN Default Value:TEN_MSEC CombPwrMarg BSC6900 in ADD UCELLDCCC(Optional) MOD UCELLDCCC(Optional) Meaning:The relative power margin of combined traffics, used to calculate the triggering threshold of event F, can avoid the fluctuation of traffic rate in case the power

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becomes restricted after rate is increased GUI Value Range:0~100 Actual Value Range:0~10 Default Value:20 DcccStg BSC6900 SET UDCCC(Optional) Meaning:Strategy for adjustment of the rate of the PS BE service when the UE is in the CELL_DCH state. RATE_UP_AND_DOWN_ON_DCH indicates that the rate over the DCH can be raised or lowered. RATE_UP_ONLY indicates that the rate over the DCH can only be raised. When UE is in low activity state, it is no need to degrade the traffic rate to the threshold for DCCC before state transition to CELL_FACH. That means UE can transit to CELL_FACH state at any rate GUI Value Range:RATE_UP_AND_DOWN_ON_DCH, RATE_UP_ONLY_ON_DCH Actual Value Range:RATE_UP_AND_DOWN_ON_DCH, RATE_UP_ONLY_ON_DCH Default Value:RATE_UP_AND_DOWN_ON_DCH DchThrouMea BSC6900 sPeriod SET UDCCC(Optional) Meaning:This parameter specifies the period of DCH throughput ratio measurement.Macd performs statistic of traffic volume on DCH and reports 4B events which are used for the rate decrease process of BE service set up on DCH GUI Value Range:1~1000 Actual Value Range:10~10000 Default Value:100 DchThrouPen BSC6900 dingTime4B ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option during which no event 4B related to DCH al) throughput is reported again after such an event 4B is reported. This parameter is set to MOD UTYPRABDCCCMC(Option avoid too many channel reconfiguration operations. The larger the value of this al) parameter, the longer the time from the last reporting of throughput-related event 4B on DCH to the next reporting, and the smaller the possibility of triggering throughput-related event 4B on DCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:16 DchThrouTime BSC6900 toTrigger4B ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option from the moment when the DCH rate falls

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al)

below the 4B threshold to the moment when the throughput-related event 4B on DCH is MOD UTYPRABDCCCMC(Option triggered. This parameter is set to avoid unnecessary reports triggered by DCH al) throughput fluctuation. The larger the value of this parameter, the longer the required duration of the DCH throughput keeping below the 4B threshold, and the smaller the possibility of triggering throughput-related event 4B on DCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:2 Direction BSC6900 ADD Meaning:Direction that the traffic volume UTYPRABDCCCMC(Manda measurement is applicable to. DOWNLINK tory) indicates downlink traffic volume measurement. UPLINK indicates uplink traffic MOD UTYPRABDCCCMC(Manda volume measurement or E-DCH throughput measurement tory) GUI Value Range:UPLINK, DOWNLINK Actual Value Range:UPLINK, DOWNLINK Default Value:None DlBeTrigTime BSC6900 E ADD Meaning:Duration from when the BE TX power UCELLQUALITYMEAS(Opti is beyond the threshold Ea to when the event onal) Ea is triggered or from when the BE TX power is below the threshold Eb to when the event Eb MOD UCELLQUALITYMEAS(Opti is triggered. This parameter is used to avoid faulty reporting due to instability of power onal) GUI Value Range:1~6000 Actual Value Range:10~60000 Default Value:64 DlBeTrigTime BSC6900 F ADD Meaning:Duration within which the measured UCELLQUALITYMEAS(Opti power being lower than the threshold is onal) allowed for BE service. This parameter is used to avoid faulty reporting due to instability of MOD UCELLQUALITYMEAS(Opti power. If the parameter is set to A, the hysteresis time is A x 10 ms onal) GUI Value Range:1~6000 Actual Value Range:10~60000 Default Value:64 DlDcccRateTh BSC6900 d SET UDCCC(Optional) Meaning:For a BE service that has a low maximum rate, the DCCC algorithm is not obviously effective yet it increases algorithm processing. Thus, the traffic-based DCCC algorithm is applied to BE services whose maximum DL rate is greater than the threshold GUI Value Range:D8, D16, D32, D64, D128, D144, D256, D384

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Actual Value Range:8, 16, 32, 64, 128, 144, 256, 384 Default Value:D64 DlFullCvrRate BSC6900 ADD UCELLDCCC(Optional) MOD UCELLDCCC(Optional) Meaning:Maximum DL rate during network planning when coverage of the entire cell is ensured. When the DL TCP is limited, the current rate is reduced to the full coverage rate if the current rate is greater than the full coverage rate. For a BE service that has a low maximum rate, the DCCC algorithm is not obviously effective yet it increases algorithm processing. Thus, the DCCC algorithm is applied to BE services whose maximum DL rate is greater than the threshold GUI Value Range:D8, D16, D32, D64, D128, D144, D256, D384 Actual Value Range:8, 16, 32, 64, 128, 144, 256, 384 Default Value:D64 DlMidRateCalc BSC6900 SET UDCCC(Optional) Meaning:This parameter determines whether automatic or manual mode is used for 3-step adjustment of the DL intermediate rate GUI Value Range:AUTO_CALC, HAND_APPOINT Actual Value Range:0, 1 Default Value:HAND_APPOINT DlMidRateThd BSC6900 SET UDCCC(Mandatory) Meaning:Threshold of the DL intermediate rate when the 3-step mode is used for DL rate adjustment and the manual mode is used for DL intermediate rate adjustment GUI Value Range:D16, D32, D64, D128, D144, D256, D384 Actual Value Range:16, 32, 64, 128, 144, 256, 384 Default Value:D128 DlRateDnAdjL BSC6900 evel SET UDCCC(Optional) Meaning:This parameter determines whether the DL rate is lowered to the minimum rate in one step or two steps for BE service set up on DCH in downlink GUI Value Range:2_Rates, 3_Rates Actual Value Range:2_Rates, 3_Rates Default Value:3_Rates DlRateUpAdjL BSC6900 evel SET UDCCC(Optional) Meaning:This parameter determines whether the DL rate is raised to the maximum rate in one step or two steps for BE service set up on DCH in downlink

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GUI Value Range:2_Rates, 3_Rates Actual Value Range:2_Rates, 3_Rates Default Value:3_Rates DraSwitch BSC6900 SET Meaning:Dynamic resource allocation switch UCORRMALGOSWITCH(O group. ptional) 1) DRA_AQM_SWITCH: When the switch is on, the active queue management algorithm is used for the RNC. 2) DRA_BASE_ADM_CE_BE_TTI_L2_OPT_SWI TCH: When the switch is on, the TTI dynamic adjustment algorithm for admission CE-based BE services applies to the UE with the UL enhanced L2 feature. This parameter is valid when DRA_BASE_ADM_CE_BE_TTI_RECFG_SWI TCH(DraSwitch) is set to ON. 3) DRA_BASE_ADM_CE_BE_TTI_RECFG_SWI TCH: When the switch is on, the TTI dynamic adjustment algorithm is supported for admission CE-based BE services. 4) DRA_BASE_COVER_BE_TTI_L2_OPT_SWIT CH: When the switch is on, the TTI dynamic adjustment algorithm for coverage-based BE services applies to the UE with the UL enhanced L2 feature. This parameter is valid when DRA_BASE_COVER_BE_TTI_RECFG_SWIT CH(DraSwitch) is set to ON. 5) DRA_BASE_COVER_BE_TTI_RECFG_SWIT CH: When the switch is on, the TTI dynamic adjustment algorithm is supported for coverage-based BE services. 6) DRA_BASE_RES_BE_TTI_L2_OPT_SWITCH : When the switch is on, the TTI dynamic adjustment algorithm for differentiation-based BE services applies to the UE with the UL enhanced L2 feature. This parameter is valid when DRA_BASE_RES_BE_TTI_RECFG_SWITCH( DraSwitch) is set to ON. 7) DRA_BASE_RES_BE_TTI_RECFG_SWITCH: When the switch is on, the TTI dynamic adjustment algorithm is supported for differentiation-based BE services. 8) DRA_DCCC_SWITCH: When the switch is

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on, the dynamic channel reconfiguration control algorithm is used for the RNC. 9) DRA_HSDPA_DL_FLOW_CONTROL_SWITC H: When the switch is on, flow control is enabled for HSDPA services in AM mode. 10) DRA_HSDPA_STATE_TRANS_SWITCH: When the switch is on, the status of the UE RRC that carrying HSDPA services can be changed to CELL_FACH at the RNC. If a PS BE service is carried over the HS-DSCH, the switch PS_BE_STATE_TRANS_SWITCH should be on simultaneously. If a PS real-time service is carried over the HS-DSCH, the switch PS_NON_BE_STATE_TRANS_SWITCH should be on simultaneously. 11) DRA_HSUPA_DCCC_SWITCH: When the switch is on, the DCCC algorithm is used for HSUPA. The DCCC switch must be also on before this switch takes effect. 12) DRA_HSUPA_STATE_TRANS_SWITCH: When the switch is on, the status of the UE RRC that carrying HSUPA services can be changed to CELL_FACH at the RNC. If a PS BE service is carried over the E-DCH, the switch PS_BE_STATE_TRANS_SWITCH should be on simultaneously. If a PS real-time service is carried over the E-DCH, the switch PS_NON_BE_STATE_TRANS_SWITCH should be on simultaneously. 13) DRA_IP_SERVICE_QOS_SWITCH: Switch of the algorithm for increasing the quality of subscribed services. When this parameter is set to ON, the service priority weight of the subscriber whose key parameters (IP Address, IP Port, and IP Protocol Type) match the specified ones can be adjusted. In this way, the QoS is improved. 14) DRA_PS_BE_STATE_TRANS_SWITCH: When the switch is on, UE RRC status transition (CELL_FACH/CELL_PCH/URA_PCH) is allowed at the RNC. 15) DRA_PS_NON_BE_STATE_TRANS_SWITC H: When the switch is on, the status of the UE RRC that carrying real-time services can be changed to CELL_FACH at the RNC. 16) DRA_R99_DL_FLOW_CONTROL_SWITCH: Under a poor radio environment, the QoS of

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high speed services drops considerably and the TX power is overly high. In this case, the RNC can set restrictions on certain transmission formats based on the transmission quality, thus lowering traffic speed and TX power. When the switch is on, the R99 downlink flow control function is enabled. 17) DRA_THROUGHPUT_DCCC_SWITCH: When the switch is on, the DCCC based on traffic statistics is supported over the DCH. 18) DRA_VOICE_SAVE_CE_SWITCH: when the switch is on, the TTI selection based on the voice service type (including VoIP and CS over HSPA) is supported when the service is initially established. 19) DRA_VOICE_TTI_RECFG_SWITCH: when the switch is on, the TTI adjustment based on the voice service type (including VoIP and CS over HSPA) is supported GUI Value Range:DRA_AQM_SWITCH, DRA_BASE_ADM_CE_BE_TTI_L2_OPT_SWI TCH, DRA_BASE_ADM_CE_BE_TTI_RECFG_SWI TCH, DRA_BASE_COVER_BE_TTI_L2_OPT_SWIT CH, DRA_BASE_COVER_BE_TTI_RECFG_SWIT CH, DRA_BASE_RES_BE_TTI_L2_OPT_SWITCH , DRA_BASE_RES_BE_TTI_RECFG_SWITCH, DRA_DCCC_SWITCH, DRA_HSDPA_DL_FLOW_CONTROL_SWITC H, DRA_HSDPA_STATE_TRANS_SWITCH, DRA_HSUPA_DCCC_SWITCH, DRA_HSUPA_STATE_TRANS_SWITCH, DRA_IP_SERVICE_QOS_SWITCH, DRA_PS_BE_STATE_TRANS_SWITCH, DRA_PS_NON_BE_STATE_TRANS_SWITC H, DRA_R99_DL_FLOW_CONTROL_SWITCH, DRA_THROUGHPUT_DCCC_SWITCH, DRA_VOICE_SAVE_CE_SWITCH, DRA_VOICE_TTI_RECFG_SWITCH Actual Value Range:DRA_AQM_SWITCH, DRA_BASE_ADM_CE_BE_TTI_L2_OPT_SWI TCH, DRA_BASE_ADM_CE_BE_TTI_RECFG_SWI TCH, DRA_BASE_COVER_BE_TTI_L2_OPT_SWIT CH, DRA_BASE_COVER_BE_TTI_RECFG_SWIT CH,

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DRA_BASE_RES_BE_TTI_L2_OPT_SWITCH , DRA_BASE_RES_BE_TTI_RECFG_SWITCH, DRA_DCCC_SWITCH, DRA_HSDPA_DL_FLOW_CONTROL_SWITC H, DRA_HSDPA_STATE_TRANS_SWITCH, DRA_HSUPA_DCCC_SWITCH, DRA_HSUPA_STATE_TRANS_SWITCH, DRA_IP_SERVICE_QOS_SWITCH, DRA_PS_BE_STATE_TRANS_SWITCH, DRA_PS_NON_BE_STATE_TRANS_SWITC H, DRA_R99_DL_FLOW_CONTROL_SWITCH, DRA_THROUGHPUT_DCCC_SWITCH, DRA_VOICE_SAVE_CE_SWITCH, DRA_VOICE_TTI_RECFG_SWITCH Default Value:None E2FThrouMea BSC6900 sPeriod SET Meaning:Period of E-DCH throughput ratio UUESTATETRANS(Optiona measurement. This parameter specifies the l) period of E-DCH throughput ratio measurement. The throughput ratio over the E-DCH is periodically measured to implement state transition from E-DCH to FACH and DCCC algorithm on EDCH GUI Value Range:1~10000 Actual Value Range:10~100000 Default Value:30 E2FThrouThd BSC6900 SET Meaning:This parameter is used to check UUESTATETRANS(Optiona whether the UE in the low activity state. If the l) UE is on the E-DCH channel, the low activity counter increases by 1 every time throughput ratio event 4B is reported GUI Value Range:0~384 Actual Value Range:0~384 Default Value:8 EdchPendingT BSC6900 ime4A ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option during which no event 4A related to EDCH al) throughput is reported again after such an event 4A is reported. This parameter is set to MOD UTYPRABDCCCMC(Option avoid too many channel reconfiguration operations. The larger the value of this al) parameter, the longer the time from the last reporting of throughput-related event 4A on EDCH to the next reporting, and the smaller the possibility of triggering throughput-related event 4A on EDCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:16

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EdchPendingT BSC6900 ime4B

ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option during which no event 4B related to EDCH al) throughput is reported again after such an event 4B is reported. This parameter is set to MOD UTYPRABDCCCMC(Option avoid too many channel reconfiguration operations. The larger the value of this al) parameter, the longer the time from the last reporting of throughput-related event 4B on EDCH to the next reporting, and the smaller the possibility of triggering throughput-related event 4B on EDCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:16

EdchRateAdju BSC6900 stSet

SET Meaning:HSUPA traffic uplink rate adjustment UEDCHRATEADJUSTSET( set. It contains rates for rate adjustment for Optional) uplink channel of HSUPA traffic and is used in the HSUPA DCCC algorithm GUI Value Range:RATE_8KBPS, RATE_16KBPS, RATE_32KBPS, RATE_64KBPS, RATE_128KBPS, RATE_144KBPS, RATE_256KBPS, RATE_384KBPS, RATE_608KBPS, RATE_1280KBPS, RATE_2048KBPS, RATE_2720KBPS, RATE_5440KBPS, RATE_11480KBPS Actual Value Range:8, 16, 32, 64, 128, 144, 256, 384, 608, 1280, 2048, 2720, 5440, 11480 Default Value:None

EdchTimetoTri BSC6900 gger4A

ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option from the moment when the E-DCH rate falls al) below the 4A threshold to the moment when the throughput-related event 4A on E-DCH is MOD UTYPRABDCCCMC(Option triggered. This parameter is set to avoid unnecessary reports triggered by E-DCH al) throughput fluctuation. The larger the value of this parameter, the longer the required duration of the E-DCH throughput keeping below the 4A threshold, and the smaller the possibility of triggering throughput-related event 4A on E-DCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:2

EdchTimetoTri BSC6900 gger4B

ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option from the moment when the E-DCH rate falls al) below the 4B threshold to the moment when the throughput-related event 4B on E-DCH is MOD UTYPRABDCCCMC(Option triggered. This parameter is set to avoid unnecessary reports triggered by E-DCH
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al)

throughput fluctuation. The larger the value of this parameter, the longer the required duration of the E-DCH throughput keeping below the 4B threshold, and the smaller the possibility of triggering throughput-related event 4B on E-DCH GUI Value Range:0~1023 Actual Value Range:0~1023 Default Value:2

Event4aThd

BSC6900

ADD Meaning:Threshold of triggering event 4A UTYPRABDCCCMC(Option related to DCH traffic volume, that is, the upper al) limit of the traffic volume. The larger the value of this parameter, the smaller the possibility of MOD UTYPRABDCCCMC(Option triggering traffic-related event 4A on DCH al) GUI Value Range:D16, D32, D64, D128, D256, D512, D1024, D2K, D3K, D4K, D6K, D8K, D12K, D16K, D24K, D32K, D48K, D64K, D96K, D128K, D192K, D256K, D384K, D512K, D768K Actual Value Range:16, 32, 64, 128, 256, 512, 1024, 2K, 3K, 4K, 6K, 8K, 12K, 16K, 24K, 32K, 48K, 64K, 96K, 128K, 192K, 256K, 384K, 512K, 768K Default Value:D1024

Event4bThd

BSC6900

ADD Meaning:Threshold of triggering event 4B UTYPRABDCCCMC(Manda related to DCH traffic volume, that is, the lower tory) limit of the traffic volume. The larger the value of this parameter, the larger the possibility of MOD UTYPRABDCCCMC(Option triggering traffic-related event 4B on DCH al) GUI Value Range:D8, D16, D32, D64, D128, D256, D512, D1024, D2K, D3K, D4K, D6K, D8K, D12K, D16K, D24K, D32K, D48K, D64K, D96K, D128K, D192K, D256K, D384K, D512K Actual Value Range:8, 16, 32, 64, 128, 256, 512, 1024, 2K, 3K, 4K, 6K, 8K, 12K, 16K, 24K, 32K, 48K, 64K, 96K, 128K, 192K, 256K, 384K, 512K Default Value:None

EventAThred BSC6900

ADD UTYPRABRLC(Optional) MOD UTYPRABRLC(Optional)

Meaning:Threshold of event A, that is, the upper limit of RLC retransmission ratio. When the monitored RLC retransmission ratio exceeds this threshold and triggers the event A, it indicates that the quality of the radio link is poor, and flow control measures need to be taken to reduce the RLC throughput GUI Value Range:0~1000 Actual Value Range:0~100 Default Value:160

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FailTimeTh

BSC6900

SET UDCCC(Optional)

Meaning:This parameter specifies the threshold of allowed times of rate increase consecutive failure within a certain monitoring period. If the times of failure is beyond this threshold, subsequent rate increase is not allowed even if the 4A measurement report is received GUI Value Range:1~255 Actual Value Range:1~255 Default Value:4

HangBlockNu BSC6900 m5A

ADD Meaning:When event 5A is triggered, a UTYPRABQUALITYMEAS( pending timer is started, during which event 5A Mandatory) will not be reported before the specified number is reached. This parameter can control MOD UTYPRABQUALITYMEAS( the frequency for reporting event 5A Optional) GUI Value Range:1~512 Actual Value Range:1~512 Default Value:None

HsupaDcccStg BSC6900

SET UDCCC(Optional)

Meaning:Strategy of the UE for rate adjustment over the EDCH. RATE_UP_AND_DOWN_ON_EDCH indicates that the rate over the EDCH can be raised or lowered. RATE_UP_ONLY_ON_EDCH indicates that the rate over the EDCH can only be raised. When UE is in low activity state, it is no need to degrade the traffic rate to the threshold for HSUPA DCCC before state transition to CELL_FACH. That means UE can transit to CELL_FACH state at any rate over the EDCH GUI Value Range:RATE_UP_AND_DOWN_ON_EDCH, RATE_UP_ONLY_ON_EDCH Actual Value Range:RATE_UP_AND_DOWN_ON_EDCH, RATE_UP_ONLY_ON_EDCH Default Value:RATE_UP_AND_DOWN_ON_EDCH

MinForBeE

BSC6900

ADD Meaning:This parameter is valid when the UCELLQUALITYMEAS(Man corresponding parameter related to the datory) reporting period unit for the event E of BE service is set to MIN. The DL code TX power is MOD UCELLQUALITYMEAS(Man reported periodically after the event Ea is reported. This parameter specifies the datory) reporting period GUI Value Range:1~60 Actual Value Range:1~60 Default Value:None

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MinForBeF

BSC6900

ADD Meaning:This parameter is valid when the UCELLQUALITYMEAS(Man corresponding parameter related to the datory) reporting period unit for the event F of BE service is set to MIN. The DL code TX power is MOD UCELLQUALITYMEAS(Man reported periodically after the event Fa is reported. This parameter specifies the datory) reporting period GUI Value Range:1~60 Actual Value Range:1~60 Default Value:None

MoniTimeLen BSC6900

SET UDCCC(Optional)

Meaning:Length of the period within which the times of consecutive failure to increase the rate of a BE service is monitored. Increase of the BE service rate is triggered by 4A measurement reports. If the times exceeds the DCCC Rate Up Fail Time Threshold, the DCCC Rate Up Fail Penalty Timer will be started, and 4A report will not be processed until DCCC Rate Up Fail Penalty Timer expires GUI Value Range:1~65535 Actual Value Range:1~65535 Default Value:60

MoniterPrd

BSC6900

ADD UTYPRABRLC(Optional) MOD UTYPRABRLC(Optional)

Meaning:Sampling period of the RLC retransmission ratio monitoring GUI Value Range:40~60000 Actual Value Range:40~60000 Default Value:1000

PendingTime4 BSC6900 A

ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option during which no event 4A related to DCH traffic al) volume is reported again after such an event 4A is reported. This parameter is set to avoid MOD UTYPRABDCCCMC(Option too many channel reconfiguration operations. The larger the value of this parameter, the al) longer the time from the last reporting of event 4A related to DCH traffic volume to the next reporting, and the smaller the possibility of triggering such event GUI Value Range:D250, D500, D1000, D2000, D4000, D8000, D16000 Actual Value Range:250, 500, 1000, 2000, 4000, 8000, 16000 Default Value:D4000

PendingTime4 BSC6900 B

ADD Meaning:Number of measurement periods UTYPRABDCCCMC(Option during which no event 4B related to DCH traffic al) volume is reported again after such an event 4B is reported. This parameter is set to avoid MOD UTYPRABDCCCMC(Option too many channel reconfiguration operations. The larger the value of this parameter, the

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al)

longer the time from the last reporting of event 4B related to DCH traffic volume to the next reporting, and the smaller the possibility of triggering such event GUI Value Range:D250, D500, D1000, D2000, D4000, D8000, D16000 Actual Value Range:250, 500, 1000, 2000, 4000, 8000, 16000 Default Value:D4000

SrncBeDlRlcQ BSC6900 osSwitch

SET UQOSACT(Optional)

Meaning:When the parameter is set to YES, QoS control for DL BE services is based on the TCP and RLC retransmission. When the parameter is set to NO, QoS control for DL BE services is based on the TCP. In both situations, QoS control is not performed across the Iur interface GUI Value Range:NO, YES Actual Value Range:NO, YES Default Value:YES

StaBlkNum5A BSC6900

ADD Meaning:When a DCH is set up, the UE starts UTYPRABQUALITYMEAS( counting the number of faulty CRCs within a Mandatory) specified sliding window. If the number of faulty CRCs exceeds the specified threshold, event MOD UTYPRABQUALITYMEAS( 5A is triggered. The length of the sliding window is specified by Statistic Block Number Optional) For 5A Event GUI Value Range:1~512 Actual Value Range:1~512 Default Value:None

TenMsecForB BSC6900 eE

ADD Meaning:This parameter is valid when the UCELLQUALITYMEAS(Opti corresponding parameter related to the onal) reporting period unit for the event E of BE service is set to TEN_MSEC. The DL code TX MOD UCELLQUALITYMEAS(Man power is reported periodically after the event Ea is reported. This parameter specifies the datory) reporting period. If the parameter is set to A, the reporting period is A x 10 ms GUI Value Range:1~6000 Actual Value Range:10~60000 Default Value:480

TenMsecForB BSC6900 eF

ADD Meaning:This parameter is valid when the UCELLQUALITYMEAS(Opti corresponding parameter related to the onal) reporting period unit for the event F of BE service is set to TEN_MSEC. The DL code TX MOD UCELLQUALITYMEAS(Man power is reported periodically after the event Fa is reported. This parameter specifies the datory) reporting period. If the parameter is set to A, the reporting period is A x 10 ms

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GUI Value Range:1~6000 Actual Value Range:10~60000 Default Value:480 Thd5A BSC6900 ADD Meaning:When a DCH is set up, the UE starts UTYPRABQUALITYMEAS( counting the number of faulty CRCs within a Mandatory) specified sliding window. If the number of faulty CRCs exceeds the specified threshold, event MOD UTYPRABQUALITYMEAS( 5A is triggered. The threshold is Event 5A Threshold Optional) GUI Value Range:1~512 Actual Value Range:1~512 Default Value:None ThdEa BSC6900 ADD Meaning:If DL code TX power is higher than UTYPRABQUALITYMEAS( the Ea absolute threshold, event Ea is Mandatory) triggered. This event triggers DL QoS operation. This parameter specifies a relative MOD UTYPRABQUALITYMEAS( threshold. Absolute Ea threshold = RL Max DL TX power - ThdEa Optional) GUI Value Range:0~56 Actual Value Range:0~28 Default Value:None ThdEb BSC6900 ADD Meaning:If DL code TX power is lower than the UTYPRABQUALITYMEAS( Eb absolute threshold, event Eb is triggered. Mandatory) When this event report is received, DL QoS operation is stopped. This parameter specifies MOD UTYPRABQUALITYMEAS( a relative threshold. Absolute Eb threshold = RL Max DL TX power - ThdEb Optional) GUI Value Range:0~56 Actual Value Range:0~28 Default Value:None TimeToTrigger BSC6900 A ADD UTYPRABRLC(Optional) MOD UTYPRABRLC(Optional) Meaning:Number of consecutive periods during which the percentage of retransmitted RLC PDUs is higher than the threshold of event A before event A is triggered GUI Value Range:1~100 Actual Value Range:1~100 Default Value:2 TimetoTrigger BSC6900 4A ADD Meaning:Time from the moment when the UTYPRABDCCCMC(Option traffic volume on the DCH exceeds the upper al) threshold to the moment when the traffic-related event 4A is triggered. This MOD UTYPRABDCCCMC(Option parameter is set to avoid unnecessary reports triggered by DCH throughput fluctuation. The al) larger the value of this parameter, the longer the required duration of the DCH throughput keeping above the 4A threshold, and the smaller the possibility of triggering

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throughput-related event 4A on DCH GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000, D10000, D15000, D20000, D25000, D30000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000, 10000, 15000, 20000, 25000, 30000 Default Value:None TimetoTrigger BSC6900 4B ADD Meaning:Time from the moment when the UTYPRABDCCCMC(Option traffic volume on the DCH falls below the lower al) threshold to the moment when the traffic-related event 4B is triggered. This MOD UTYPRABDCCCMC(Option parameter is set to avoid unnecessary reports triggered by DCH throughput fluctuation. The al) larger the value of this parameter, the longer the required duration of the DCH throughput keeping below the 4B threshold, and the smaller the possibility of triggering throughput-related event 4B on DCH GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000, D10000, D15000, D20000, D25000, D30000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000, 10000, 15000, 20000, 25000, 30000 Default Value:D2560 UlBeTrigTime6 BSC6900 A1 ADD Meaning:Duration when the measured value of UCELLQUALITYMEAS(Opti BE keeps fulfilling the 6A1 measurement onal) condition before the event 6A1 is triggered. The trigger time is used to prevent the sudden MOD UCELLQUALITYMEAS(Opti change of the measured value for being reported onal) GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 Default Value:D640 UlBeTrigTime6 BSC6900 A2 ADD Meaning:Duration when the measured value of UCELLQUALITYMEAS(Opti BE keeps fulfilling the 6A2 measurement onal) condition before the event 6A2 is triggered. The trigger time is used to prevent the sudden MOD UCELLQUALITYMEAS(Opti change of the measured value for being reported onal) GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320,

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D640, D1280, D2560, D5000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 Default Value:D1280 UlBeTrigTime6 BSC6900 B1 ADD Meaning:Duration when the measured value of UCELLQUALITYMEAS(Opti BE keeps fulfilling the 6B1 measurement onal) condition before the event 6B1 is triggered. The trigger time is used to prevent the sudden MOD UCELLQUALITYMEAS(Opti change of the measured value for being reported onal) GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 Default Value:D2560 UlBeTrigTime6 BSC6900 B2 ADD Meaning:Duration when the measured value of UCELLQUALITYMEAS(Opti BE keeps fulfilling the 6B2 measurement onal) condition before the event 6B2 is triggered. The trigger time is used to prevent the sudden MOD UCELLQUALITYMEAS(Opti change of the measured value for being reported onal) GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 Default Value:D1280 UlBeTrigTime6 BSC6900 D ADD Meaning:Duration when the measured value of UCELLQUALITYMEAS(Opti BE keeps fulfilling the 6D measurement onal) condition before the event 6D is triggered. The trigger time is used to prevent the sudden MOD UCELLQUALITYMEAS(Opti change of the measured value for being reported onal) GUI Value Range:D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, D640, D1280, D2560, D5000 Actual Value Range:0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 Default Value:D240 UlDcccRateTh BSC6900 d SET UDCCC(Optional) Meaning:For a BE service that has a low maximum rate, the DCCC algorithm is not obviously effective yet it increases algorithm processing. Thus, the traffic-based DCCC

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algorithm is applied to BE services whose maximum UL rate is greater than the threshold GUI Value Range:D8, D16, D32, D64, D128, D144, D256, D384 Actual Value Range:8, 16, 32, 64, 128, 144, 256, 384 Default Value:D64 UlFullCvrRate BSC6900 ADD UCELLDCCC(Optional) MOD UCELLDCCC(Optional) Meaning:Maximum UL rate when coverage of the entire cell is ensured under certain load. For a BE service that has a low maximum rate, the DCCC algorithm is not obviously effective yet it increases algorithm processing. Thus, the coverage-based DCCC algorithm is applied to BE services whose maximum UL rate is greater than the threshold GUI Value Range:D8, D16, D32, D64, D128, D144, D256, D384 Actual Value Range:8, 16, 32, 64, 128, 144, 256, 384 Default Value:D64 UlMidRateCalc BSC6900 SET UDCCC(Optional) Meaning:This parameter determines whether the uplink intermediate rate uses automatic or manual mode when using 3-step adjustment GUI Value Range:AUTO_CALC, HAND_APPOINT Actual Value Range:0, 1 Default Value:HAND_APPOINT UlMidRateThd BSC6900 SET UDCCC(Mandatory) Meaning:Threshold of the UL intermediate rate when the 3-step mode is used for UL rate adjustment and the manual mode is used for UL intermediate rate adjustment GUI Value Range:D16, D32, D64, D128, D144, D256, D384 Actual Value Range:16, 32, 64, 128, 144, 256, 384 Default Value:D128 UlRateDnAdjL BSC6900 evel SET UDCCC(Optional) Meaning:This parameter determines whether the UL rate is lowered to the minimum rate in one step or two steps for BE service set up on DCH in uplink GUI Value Range:2_Rates, 3_Rates Actual Value Range:2_Rates, 3_Rates Default Value:3_Rates UlRateUpAdjL BSC6900 evel SET UDCCC(Optional) Meaning:This parameter determines whether the UL rate is raised to the maximum rate in one step or two steps for BE service set up on

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7 Parameters

DCH in uplink GUI Value Range:2_Rates, 3_Rates Actual Value Range:2_Rates, 3_Rates Default Value:3_Rates

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8 Counters

8 Counters
Table 8-1 Counter description Counter Counter Name ID 67180615 VS.RRC.MrRpt.4A Counter Description Feature ID Feature Name Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Intra RNC Soft Handover 67180676 VS.DCCC.Succ.D2F Number of Successful WRFD-021101 Channel Conversions from WRFD-020202 DCHs to FACHs for Cell Dynamic Channel Configuration Control (DCCC) Intra RNC Soft Handover 67184359 VS.DCCC.AttUpsizing. Number of UL WRFD-01061208 HSUPA DCCC E2E.Thr EDCH-EDCH DCCC Upsizing Attempts Based on the Throughput or RLC BO for Cell 67190706 VS.DCCC.D2C.Att Number of Dynamic Channel Conversion Attempts from DCHs to FACHs for Cell Number of Dynamic Channel Conversion Attempts from FACHs to DCHs for Cell WRFD-021101 Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

Number of Uplink Event WRFD-021101 4A Measurement Reports for Cell Number of Uplink Event WRFD-021101 4B Measurement Reports for Cell Number of Successful WRFD-021101 Channel Conversions from WRFD-020202 FACH to DCH for Cell

67180616 VS.RRC.MrRpt.4B

67180675 VS.DCCC.Succ.F2D

67190707 VS.DCCC.C2D.Att

WRFD-021101

67192470 VS.HSUPA.E2D.Succ Number of Successful WRFD-01061208 HSUPA DCCC Channel Conversions from EDCH to DCH for HSUPA Service for Cell 67192471 VS.HSUPA.E2D.Att Number of Channel WRFD-01061208 HSUPA DCCC Conversion Attempts from EDCH to DCH for HSUPA Service for Cell

67192476 VS.HSUPA.D2E.Succ Number of Successful WRFD-01061208 HSUPA DCCC Channel Conversions from DCH to EDCH for HSUPA Service for Cell

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WCDMA RAN DCCC

8 Counters

67192477 VS.HSUPA.D2E.Att

Number of Channel WRFD-01061208 HSUPA DCCC Conversion Attempts from DCH to EDCH for HSUPA Service for Cell Number of Channel WRFD-01061208 HSUPA DCCC Conversion Attempts from EDCH to FACH for HSUPA Service for Cell Number of Successful WRFD-01061208 HSUPA DCCC Channel Conversions from EDCH to FACH for HSUPA Service for Cell Number of Channel WRFD-01061208 HSUPA DCCC Conversion Attempts from FACH to EDCH for HSUPA Service for Cell Number of Successful WRFD-01061208 HSUPA DCCC Channel Conversions from FACH to EDCH for HSUPA Service for Cell Number of State Transfer WRFD-021101 Attempts from WRFD-020202 CELL_FACH to CELL_PCH for Cell Dynamic Channel Configuration Control (DCCC) Intra RNC Soft Handover Dynamic Channel Configuration Control (DCCC) Intra RNC Soft Handover Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

67192480 VS.HSUPA.E2F.Att

67192481 VS.HSUPA.E2F.Succ

67192482 VS.HSUPA.F2E.Att

67192483 VS.HSUPA.F2E.Succ

67192583 VS.DCCC.Att.F2P

67192584 VS.DCCC.Succ.F2P

Number of Successful State Transfers from CELL_FACH to CELL_PCH for Cell

WRFD-021101 WRFD-020202

67192585 VS.DCCC.AttUpsizing. Number of DL DCH DCCC WRFD-021101 DL.Thr Upsizing Attempts Based on Throughput or RLC BO for Cell 67192586 VS.DCCC.SuccUpsizin Number of Successful DL WRFD-021101 g.DL.Thr DCH DCCC Upsizings Based on Throughput or RLC BO for Cell 67192587 VS.DCCC.AttDownsizin Number of Downlink DCH WRFD-021101 g.DL.Thr DCCC Downsizing Attempts Based on Throughput or RLC BO for Cell

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8 Counters

67192588 VS.DCCC.SuccDownsi Number of Successful DL WRFD-021101 zing.DL.Thr DCH DCCC Downsizings Based on Throughput or RLC BO for Cell 67192589 VS.DCCC.AttDownsizin Number of Downlink DCH WRFD-021101 g.DL.Cov DCCC Downsizing Attempts Based on Coverage (QoS) for Cell 67192590 VS.DCCC.SuccDownsi Number of Successful DL WRFD-021101 zing.DL.Cov DCH DCCC Downsizings Based on Coverage (QoS) for Cell 67192591 VS.DCCC.AttDownsizin Number of Downlink DCH WRFD-021101 g.DL.Cong DCCC Downsizing Attempts Based on Resource Congestion Algorithm for Cell 67192592 VS.DCCC.SuccDownsi Number of Successful DL WRFD-021101 zing.DL.Cong DCH DCCC Downsizings Based on Resource Congestion Algorithm for Cell 67192593 VS.DCCC.AttUpsizing. Number of UL DCH DCCC WRFD-021101 UL.Thr Upsizing Attempts Based on Throughput or RLC BO for Cell 67192594 VS.DCCC.SuccUpsizin Number of Successful UL WRFD-021101 g.UL.Thr DCH DCCC Upsizings Based on Throughput or RLC BO for Cell 67192595 VS.DCCC.AttDownsizin Number of UL DCH DCCC WRFD-021101 g.UL.Thr Downsizing Attempts Based on the Throughput or RLC BO for Cell 67192596 VS.DCCC.SuccDownsi Number of Successful UL WRFD-021101 zing.UL.Thr DCH DCCC Downsizings Based on Throughput or RLC BO for Cell 67192652 VS.Utran.MrRpt.4A Number of Downlink Event WRFD-021101 4A Measurement Reports for Cell Number of Downlink Event WRFD-021101 4B Measurement Reports for Cell

Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

Dynamic Channel Configuration Control (DCCC)

Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

67192653 VS.Utran.MrRpt.4B

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8 Counters

67196026 VS.DCCC.AttDownsizin Number of UL WRFD-01061208 HSUPA DCCC g.E2E.Thr EDCH-EDCH DCCC Downsizing Attempts Based on the Throughput or RLC BO for Cell 67196027 VS.DCCC.SuccUpsizin Number of Successful UL WRFD-01061208 HSUPA DCCC g.E2E.Thr EDCH-EDCH DCCC Upsizings Based on the Throughput or RLC BO for Cell 67196028 VS.DCCC.SuccDownsi Number of Successful UL WRFD-01061208 HSUPA DCCC zing.E2E.Thr EDCH-EDCH DCCC Downsizings Based on the Throughput or RLC BO for Cell 67196032 VS.DCCC.AttDownsizin Number of UL DCH DCCC WRFD-021101 g.UL.Cov Downsizing Attempts Based on the Coverage (QoS) for Cell 67196033 VS.DCCC.SuccDownsi Number of Successful UL WRFD-021101 zing.UL.Cov DCH DCCC Downsizings Based on Coverage (QoS) for Cell 67196034 VS.DCCC.AttDownsizin Number of UL DCH DCCC WRFD-021101 g.UL.Cong Downsizing Attempts Based on the Resource Congestion Algorithm for Cell 67196035 VS.DCCC.SuccDownsi Number of Successful UL WRFD-021101 zing.UL.Cong DCH DCCC Downsizings Based on Resource Congestion Algorithm for Cell 67196302 VS.RAB.NormRel.PS.0 Number of PS RABs at 0 WRFD-021101 kbps.Timeout kbit/s Released for Failure to Rate up in the Best Cell 67196303 VS.RB.RateDown.To.0 Number of Times that PS WRFD-021101 kbps Rate Downgrades to 0 Kbit/s in the Best Cell 67196305 VS.RAB.NormRel.PS.0 Number of PS RABs of 0 WRFD-021101 kbps.Timeout.RNC kbit/s Released for Failed to Rate up for RNC Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

Dynamic Channel Configuration Control (DCCC)

Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC) Dynamic Channel Configuration Control (DCCC)

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8 Counters

73403799 VS.DCCC.P2F.Att

Number of Attempts to transfer state from CELL_PCH to CELL_FACH for cell

WRFD-010202 WRFD-021101

UE State in Connected Mode (CELL-DCH CELL-PCH URA-PCH CELL-FACH) Dynamic Channel Configuration Control (DCCC)

73403800 VS.DCCC.P2F.Succ

Number of Successful state transfer from CELL_PCH to CELL_FACH for cell

WRFD-010202 WRFD-021101

UE State in Connected Mode (CELL-DCH CELL-PCH URA-PCH CELL-FACH) Dynamic Channel Configuration Control (DCCC)

73403801 VS.DCCC.P2URAP

Number of state transfer from CELL_PCH to URA_PCH for cell

WRFD-010202 WRFD-021101

UE State in Connected Mode (CELL-DCH CELL-PCH URA-PCH CELL-FACH) Dynamic Channel Configuration Control (DCCC)

73403802 VS.DCCC.URAP2F.Att Number of Attempts to WRFD-010202 transfer state from WRFD-021101 URA_PCH to CELL_FACH for cell

UE State in Connected Mode (CELL-DCH CELL-PCH URA-PCH CELL-FACH) Dynamic Channel Configuration Control (DCCC)

73403803 VS.DCCC.URAP2F.Su Number of successful WRFD-010202 cc state transfer from WRFD-021101 URA_PCH to CELL_FACH in the best cell

UE State in Connected Mode (CELL-DCH CELL-PCH URA-PCH CELL-FACH) Dynamic Channel Configuration Control (DCCC)

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8 Counters

73421937 VS.RRC.AttConRel.SC Number of RRC Releases WRFD-021101 RI.DF2P.NoReply.RNC Due to Failure in the UE State Transition to CELL_PCH Triggered by Signaling Connection Release Indication

Dynamic Channel Configuration Control (DCCC)

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9 Glossary

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

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10 Reference Documents

10 Reference Documents
[1] 3GPP TS 26.201: Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec; Frame structure [2] 3GPP TS 28.062: Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 [3] Load Control Feature Parameter Description [4] HSUPA Feature Parameter Description [5] Handover Feature Parameter Description

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