DC HSDPA Parameters

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Copyright © Huawei Technolog ies Co., Ltd. 2010. All righ ts reserved.

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

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and other Huawei trademarks are the property of Huawei Technologies Co., Ltd. All other trademarksand trade names mentioned in this document are the property of their respective holders.

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Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd


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Issue 01 (2010-03-30) Huawei Proprietary and Confidential


iii

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 Basic Principle...........................................................................................................................3-1

3.1 Overview .......................................................................................................................................3-1

3.2 Cell Configuration.......................................................................................................................... 3-1

3.3 Channel Mapping .......................................................................................................................... 3-3

3.4 UE Categories ............................................................................................................................... 3-3

3.5 NodeB MAC-ehs ........................................................................................................................... 3-4

3.6 Impact on Interfaces...................................................................................................................... 3-5

4 Technical Descrip tion ..............................................................................................................4-1

4.1 Overview .......................................................................................................................................4-1

4.2 Radio Bearers ............................................................................................................................... 4-1

4.3 State Transition.............................................................................................................................. 4-2

4.4 Mobility Management .................................................................................................................... 4-2

4.5 Load Control.................................................................................................................................. 4-4

4.5.1 RAB DRD ............................................................................................................................. 4-4

4.5.2 Call Admission Control ......................................................................................................... 4-5

4.5.3 Queuing and Premption........................................................................................................ 4-6

4.5.4 Load Reshuffling and Overload Control ...............................................................................4-7

4.6 Scheduling..................................................................................................................................... 4-7

5 Parameters .................................................................................................................................5-1

6 Counters ......................................................................................................................................6-1

7 Glossary ......................................................................................................................................7-1

8 Reference Documents .............................................................................................................8-1


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DC-HSDPA 1 Introduction



1-1

1 Introduction

1.1 Scope

This document describes the feature Dual-Carrier High Speed Downlink Packet Access (WRFD-010696DC-HSDPA).

Before reading this document, you are advised to read the HSDPA Feature Parameter Description.

1.2 Intended Audience

This document is intended for:

Personnel who are familiar with WCDMA basics

Personnel who need to understand DC-HSDPA

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 DC-HSDPA feature.

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

Document Issues

The document issues are as follows:

01 (2010-03-30)

Draft (2009-12-05)

01 (2010-03-30)

This is the document for the first commercial release of RAN12.0.

Compared with issue Draft (2009-12-05) of RAN12.0, this issue optimizes the description.

Draft (2009-12-05)

This is the draft of the document for RAN12.0.

This is a new document.


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DC-HSDPA 2 Overview



2-1

2 Overview

Similar to Long Term Evolution (LTE), the HSPA technology is also influenced by the multi-carrieraggregations. The performance and throughputs of HSPA can be improved by using more bandwidth

provided by multi-carrier. The throughputs of end users thus can be double or more as compared tosingle carrier HSPA.

In releases earlier than Release 8, only a single carrier can be used for the HSDPA transmission of a UE.This is called single carrier HSDPA (SC-HSDPA) in this document.

The first phase of Multi-Carrier HSPA (MC-HSPA) based on 3GPP R8 Technical Specifications (TSs)uses two consecutive carriers in the downlink to transmit data for one subscriber and named as DualCarrier HSDPA (DC-HSDPA). The 3GPP R9 and beyond TSs specify the use of more than two carriersfor a single subscriber without the restrictions on the use of same frequency band.

The following figure shows the 3GPP evolution of MC-HSDPA.

Figure 2-1 Overview of MC-HSDPA

The requirements of DC-HSDPA are listed in the following table.

Table 2-1 Requirements of the DC-HSDPA

Item Requirement

CN The CN needs to support the downlink peak rate of 42 Mbit/s provided by downlink

DC-HSDPA with 64QAM.

RNC The RNC needs to support downlink enhanced L2.

The RNC provides the radio bearer scheme for DC-HSDPA.

NodeB DC-HSDPA requires NodeB to support MAC-ehs. A single MAC-ehs entity supportsHS-DSCH transmission in more than one cell served by the same Node-B (FDD only).

UE The UE can monitor a maximum of six HS-SCCHs in the two cells of DC-HSDPA. In eachcell, the UE can monitor a maximum of three HS-SCCHs at the same time.

In 3GPP Release 8, HS-DSCH categories 21, 22, 23, and 24 of the UE are added tosupport DC-HSDPA. In later 3GPP release, more HS-DSCH categories may supportDC-HSDPA.


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DC-HSDPA 3 Basic Principle



3-1

3 Basic Principle

3.1 Overview

DC-HSDPA allows a UE to set up HSDPA connections with two inter-frequency synchronous cells thathave the same coverage. In the downlink, the UE can receive different data through HS-DSCHs from thetwo cells simultaneously. In the uplink, however, the UE sends data only through its primary cell.

Figure 3-1 DC-HSDPA principle

The two cells (primary cell and secondary cell) of DC-HSDPA follow the following restrictions:

The two cells belong to the same sector of a NodeB and are inter-frequency same-coverage cells.

The two cells is in the same downlink resource group of a NodeB.

The two cells operate on adjacent carriers with a frequency spacing less than or eaqual to 5 MHz inthe same frequency band.

The two cells have the same timing (Tcell).

The two cells support HSDPA and enhanced L2.

The two cells belong to the same operator.

The dual cell transmission only applies to HSDPA physical channels.

The uplink of DC-HSDPA UE is in only the primary cell but not in the secondary cell.

DC-HSDPA improves the throughput and QoS of end users in the whole cell area even on the cell edges.Theoretically, DC-HSDPA with 64QAM can provide a peak rate of 42 Mbit/s in the downlink. This ratedoubles the peak rate provided by only 64QAM.

3.2 Cell Configuration

DC-HSDPA cell group consists of two cells: primary cell and secondary cell.

From the perspective of a UE, the two cells are as follows:


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Primary cell (also called anchor cell) carries all the types of channel for a UE. Each UE has only oneprimary cell.

Secondary cell (also called supplementary cell) carries only three types of downlink (DL) channel for aUE. Each UE has only one secondary cell.

The three types of DL channel are as follows:− High-speed shared control channel (HS-SCCH)

− High-speed physical downlink shared channel (HS-PDSCH)

− Primary common pilot channel (P-CPICH)

Figure 3-2 shows the physical channels involved in DC-HSDPA for a UE.

Figure 3-2 Cell Configuration from the perspective of a UE

From the perspective of the network, both the cells can work as primary cell and secondary cell. The twocells can be deployed equivalently with the same configuration, as shown in the following figure.

Figure 3-3 Equivalent deployment of primary cell and secondary cell

In equivalent deployment of primary and secondary cells, the RNC selects the primary cell for UEsbased on the load and radio bearer scheme. Both cells can work independently for non-DC-HSDPA UEsor legacy HSDPA UEs.

Alternatively, the primary cell is configured with all channels whereas the secondary cell is configuredwith only HS-DSCH and P-CPICH. The secondary cell cannot work independently. This is callednon-equivalent deployment. Non-equivalent deployment is not supported.


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3-3

3.3 Channel Mapping

Overview

Figure 3-4 Channel mapping of DC-HSDPA

DC-HSDPA UE receives two HS-DSCH transport channels from two cells of the same NodeB. EachHS-DSCH is mapped to one HS-SCCH and several HS-PDSCH physical channels.

The uplink DCH/E-DCH channels of DC-HSDPA are carried only on the primary cell.

All dedicated physical control channels DPCCH and DPCH/F-DPCH in uplink and downlink are carriedon the primary cell.

HS-SCCHIn releases earlier than 3GPP Release 8, a UE can monitor a maximum of four HS-SCCHs at the sametime, according to 3GPP TS 25.331. In DC-HSDPA cell group, the HS-SCCHs on the primary cell areindependent of those on the secondary cell. A UE can monitor a maximum of six HS-SCCHs at the sametime. In each cell, the UE can monitor a maximum of three HS-SCCHs at the same time.

There are three types of HS-SCCH, type 1 for common use, type 2 for HS-SCCH Less Operation, andtype 3 for MIMO. DC-HSDPA uses only HS-SCCH type 1. DC-HSDPA with HS-SCCH Less Operationuses HS-SCCH type 2.

HS-SCCH Less Operation applies only to the primary cell.

HS-DPCCH

The UE gives feedback on the CQIs and HARQ ACK/NACK about two cells on the HS-DPCCH channelto the primary cell. HS-DPCCH uses a new frame format that enables it to carry CQI and HARQ ACK/NACK information of the two cells in a TTI.

3.4 UE Categories

In 3GPP Release 8, HS-DSCH categories 21, 22, 23, and 24 of the UE are added to support DC-HSDPA,as listed in Table 3-1. This table is extracted from 3GPP TS 25.306.. In later 3GPP release, moreHS-DSCH categories may support DC-HSDPA.


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Table 3-1 FDD HS-DSCH physical layer categories 21 to 24

HS-DSCHCategory

MaximumNumber

ofHS-DSCHCodesReceived

MinimumInter-TTIInterval

MaximumNumber of Bitsof an HS-DSCH

TransportBlock ReceivedWithin

an HS-DSCHTTI

TotalNumber of

SoftChannel Bits

SupportedModulati

onsWithoutMIMOOperation or DualCellOperation

SupportedModulations

Simultaneous withMIMOOperationandWithoutDual CellOperation

SupportedModul

ationswithDualCellOperation

Category 21 15 1 23370 345600

Category 22 15 1 27952 345600

QPSK,16QAM

Category 23 15 1 35280 518400

Category 24 15 1 42192 518400

- - QPSK,16QAM,64Q AM

The requirements for the UEs of different HS-DSCH categories when DC-HSDPA is not configured areas follows:

The UE of HS-DSCH category 21 needs to support at least one of HS-DSCH categories 9, 10, 13, 14,15, 16, 17, and 18.

The UE of HS-DSCH category 22 needs to support at least one of HS-DSCH categories 10, 14, 16,and 18.

The UE of HS-DSCH category 23 needs to support at least one of HS-DSCH categories 13, 14, 17, 18,19, and 20.

The UE of HS-DSCH category 24 needs to support at least one of HS-DSCH categories 14, 18, and20.

The peak rate can reach 42.192 Mbit/s (= 2 x TB_Size/TTI = 2 x 42192/2) at the MAC layer, with thesupport of the CN.

The DC-HSDPA UEs and MIMO UEs can co-exist in the same cell, but one UE cannot use MIMO andDC-HSDPA together.

3.5 NodeB MAC-ehsDC-HSDPA requires NodeB to support MAC-ehs. A single MAC-ehs entity supports HS-DSCHtransmission in more than one cell served by the same NodeB (FDD only). Queues of a DC-HSDPA UEare common for the two cells. Scheduler in NodeB arranges the data transmission of queues on the twocells. DC-HSDPA transmissions can be regarded as independent transmissions over two HS-DSCHchannels. There will be separate HARQ entity per HS-DSCH channel, that is, one HARQ process perTTI for single carrier transmission and two HARQ processes per TTI for dual carrier transmission.

MAC-ehs selects TFRC for the MAC-ehs PDUs of each cell independently based on the availableresources of the cells and CQI reported by UE.


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3-5

Figure 3-5 MAC-ehs architecture

In a NodeB, two MAC-ehs PDUs can be scheduled at the same time. Figure 3-6 shows an example oftraffic flow to a DC-HSDPA UE.

Figure 3-6 Example of traffic flow to a DC-HSDPA UEs

3.6 Impact on Interfaces

To support DC-HSDPA, new Information Elements (IEs) are added to signaling messages.

UEs and cells can report its capacity of DC-HSDPA to the RNC through the Iub and Uu interfaces. TheRNC instructs cells to set up or reconfigure radio links with DC-HSDPA through the Iub interface. TheRNC instructs UEs to set up or reconfigure radio bearers with DC-HSDPA through the Uu.


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Impact on Iub

When a cell receives the Audit Request message or when a new cell is setup or a cell capability ischanged, NodeB reports the cell capability to RNC in Audit Response message or Resource StateIndication message

When a cell supports DC-HSDPA, NodeB sets the Multi Cell Capability Info IE to Multi Cell Capable forthe cell in Audit Response and send the message to RNC.

If the cell is primary serving cell, all the possible secondary serving cell in the same sector must belisted in the Possible Secondary Cell List IE.

When RNC instruct a cell to set up a radio link with DC-HSDPA, the information of the secondary servingcell is added to the Radio Link Setup procedure or Radio Link Addition procedure.

The Additional HS Cell Information RL Setup IE is added to Radio Link Setup Request/Response/Failuremessages and Radio Link Addition Request/Response/Failure messages to indicate the usage ofDC-HSDPA and associated parameters.

Impact on UuIn the RRC CONNECTION REQUEST, the Multi cell support IE is added to indicate the UE capability ofsupporting multiple cell.

In the RRC Connection Setup Complete and UE Capability Information message, the Physical ChannelCapability IE is extended to indicate the UE capability of DC-HSDPA.

The Downlink secondary cell info FDD IE in the following signaling message indicates the usage ofsecondary serving cell and related parameters

RRC CONNECTION SETUP

ACTIVE SET UPDATE

CELL UPDATE CONFIRM PHYSICAL CHANNEL RECONFIGURATION

TRANSPORT CHANNEL RECONFIGURATION

RADIO BEARER RECONFIGURATION

RADIO BEARER RELEASE

RADIO BEARER SETUP


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DC-HSDPA 4 Technical Description



4-1

4 Technical Descript ion

4.1 Overview

This document describes only the functions that are different from those of SC-HSDPA.

The functions described in this document are as follows:

Radio Bearers

State transition

Mobility management

Load control

Scheduling

For details about other associated functions, see the HSDPA Feature Parameter Description.

4.2 Radio BearersWhen downlink transport channel HS-DSCH is selected for streaming or BE services or combinedservice with streaming or BE, the DC-HSDPA may apply to them. When there is only a CS service, PSconversational service, IMS signaling, or SRB signaling, the DC-HSDPA technology is not used becauseof small traffic volume and low transmission delay. For details of radio bearers, see the HSDPA FeatureParameter Description.

Before using DC-HSDPA for a service, you need to configure on RNC and NodeB respectively to enablethe feature.

In NodeB:

− You need to setup two cells to support DC-HSDPA. The two cells operate on adjacent carriers with a

frequency spacing of 5 MHz or less than 5 MHz in the same frequency band. The two carriers arespecified by frequency channel numbers (DLFREQ/ ULFREQ).

− The two cells are configured as a DC-HSDPA group ( ADD DUALCELLGRP). The two cells arespecified by the parameters (FRSTLOCELL, SECONDLOCELL).

In RNC:

− You need to turn on the switch CfgSwitch: CFG_HSDPA_DC_SWITCH and HspaPlusSwitch:DC_HSDPA.

− The preferred feature should be set to DC_HSDPA through the parameterMIMO64QAMorDcHSDPASwitch .

− The timing (Tcell) of the two cells needs to be set to the same value.

64QAM can be enabled in one or both cells in the DC-HSDPA cell group. DC-HSDPA and 64QAM canrun at the same time.

Continuous Packet Connectivity (CPC) function can be enabled in the DC-HSDPA cells but with thefollowing limitations:

CPC DTX is applicable to primary cell only because there will be no uplink control channel for theDC-HSDPA UE on secondary cell

CPC HS-SCCH Less Operation is applicable to primary cell only and is not applicable to secondarycell.

CPC DRX for DC-HSDPA UE on two carriers is similar to that of the single cell operation.

In 3GPP R8-based HSPA+, it is an optional choice for the operators to select DC-HSDPA or MIMO.However, in later 3GPP standards the DC and MIMO could be deployed together.


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In RAN12.0, a cell can enable and run DC-HSDPA and MIMO functions at the same time but a singleUE can use only one instead of both at the same time.

In RAN12.0, the two cells in a DC-HSDPA cell group cannot support MIMO at the same time. Only oneof them can support MIMO.

In RAN13.0, a cell can run DC-HSDPA and MIMO functions at the same time and both of the two cellsin a DC-HSDPA cell group can support MIMO at the same time.

DC-HSDPA with 64QAM can reach a peak rate of 42 Mbit/s. You need licenses to enable the function of42 Mbit/s in the downlink.

TCP protocol is widely used in data transmission. As a file is being downloaded, the TCPacknowledgement is sent in uplink. The higher the rate of download is, the larger the bandwidth isrequired in uplink. If the download rate reaches up to 42Mbps, the rate of TCP acknowledgement inuplink is much higher than 384kbps which is the highest rate supported by DCH. HSUPA bearer isrequired to provide high bandwidth in uplink to transmit TCP acknowledgement in time. DL 42Mbps peruser can be supported only in case of HSUPA being used.

4.3 State Transit ionDC-HSDPA state transition is based on the strategy of SC-HSDPA state transition. In addition, itconsiders the primary cell during state transition.

Assume that a DC-HSDPA UE preferentially selects F2 as the primary cell. Then, the strategy ofDC-HSDPA state transition is as follows:

To move from the CELL_FACH, CELL_PCH, or URA_PCH state to the CELL_DCH state:

1. If the UE is allowed to access the F2 cell, the UE moves to the CELL_DCH state in this cell.

2. If the UE is not allowed to access the F2 cell, other DC-HSDPA cells in a DRD candidate cell set areattempted:

3. If the UE is allowed to access one of the candidate cells, the UE moves to the CELL_DCH state inthis cell.

4. If the UE is not allowed to access any of the candidate cells, the UE performs the followingoperations:

− If the UL service was carried on the HSUPA channel, the UL falls back to DCH:

If the UE is allowed to access the cell, the UE moves to the CELL_DCH state.

If the UE is not allowed to access the cell, the state transition fails and the UE stays in the originalstate.

− If the UL service was carried on the DCH, the state transition fails and the UE stays in the originalstate.

To move from the CELL_DCH state to the CELL_FACH state, the DC-HSDPA UE performs the statetransition in the primary-carrier cell, like an SC-HSDPA UE.

To move from the CELL_FACH state to the CELL_PCH state, the DC-HSDPA UE performs the samestate transition as a SC-HSDPA UE because the DC-HSDPA UE in CELL_FACH state can use only onefrequency.

4.4 Mobili ty Management

The introduction of DC-HSDPA has no impact on handover measurement triggering and handoverdecision. During handover execution, however, the RNC needs to decide whether to continue to use theDC-HSDPA technology after the handover if the target cell supports DC-HSDPA or whether to use anon-DC-HSDPA technology after the handover if the target cell does not support DC-HSDPA.


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4-3

This section describes only the mobility management of DC-HSDPA. For other information abouthandover, see the Handover Feature Parameter Description.

Measurement Control

The active set is maintained for primary-carrier only. In other words, for DC-HSDPA intra-frequencyhandover, only the signal quality of the primary-carrier cell and its neighboring cells needs to bemeasured.

For DC-HSDPA inter-frequency handover, except for the signal quality of the primary-carrier cell and itsneighboring cells, the signal quality of the secondary-carrier cell also needs to be measured asinter-frequency neighboring cell.

If the UE has a dual-frequency receiver, it can perform inter-frequency measurement without starting thecompressed mode if all of the following conditions are met:

The CmpSwitch: CMP_UU_ADJACENT_FREQ_CM_SWITCH is on.

The value of the IE "Adjacent frequency measurements without compressed mode" reported by the

UE is TRUE. For the UE that supports dual-carrier HSDPA(DC-HSDPA):

− If the UE has a DC-HSDPA service, all the cells involved in inter-frequency measurement are at thesame frequency as the supplementary carrier.

− If the UE does not have a DC-HSDPA service, all the cells involved in inter-frequency measurementare at the same frequency, with a 5 MHz spacing from the current cell, but within the same band asthe current cell.

Handover Between DC-HSDPA Cells

When receiving a measurement report indicating that the signal quality of a DC-HSDPA cell is better thanthat of the serving cell (a DC-HSDPA cell), the RNC decides whether to perform a DC-HSDPA handover

to the target cell:

If the admission to the target cell is allowed and the corresponding configuration is successful, theRNC performs the handover.

If the admission to the target cell is allowed but the corresponding configuration is unsuccessful, theRNC reconfigures the service on SC-HSDPA and then performs an SC-HSDPA handover.

If the admission to the target cell is not allowed, the RNC reconfigures the service on DCH andperforms a DCH handover:

− If the DCH handover is allowed, the RNC performs the handover.

− Otherwise, the RNC does not perform the handover.

Handover from a DC-HSDPA Cell to a Non-DC-HSDPA CellWhen receiving a measurement report indicating that the signal quality of a non-DC-HSDPA cell is betterthan that of the serving cell (a DC-HSDPA cell), the RNC reconfigures the service to DCH or HSDPA andcontinue handover procedure.

Handover from a Non-DC-HSDPA Cell to a DC-HSDPA Cell

When receiving a measurement report indicating that the signal quality of a DC-HSDPA cell is better thanthat of the serving cell (a non-HSDPA cell), the RNC performs a handover after which the HSPA+technologies supported by both the source cell and the target cell are used in the target cell. If suchHSPA+ technologies are ranked lower than some HSPA+ technologies supported by both the target celland the UE, the ChannelRetryHoTimerLen timer is started after the handover. When the timer expires,

the RNC tries to reconfigure the traffic radio bearer (TRB) and signaling radio bearer (SRB) to enablethem to support the higher-ranked HSPA+ technologies.


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4.5 Load Control

4.5.1 RAB DRD

During RB setup or state transition from CELL_FACH to CELL_DCH, the RNC makes DRDs to select aDC-HSDPA cell group and then select a primary-carrier cell for the UE.

For details of DRD, see Directed Retry Decision Feature Parameter Description.

DRD Procedure

The procedure is as follows:

1. The RNC selects a set of candidate cells that meet the DRD quality conditions.

For details, see the Directed Retry Decision Feature Parameter Description.

2. The RNC selects DC-HSDPA cell group according to the HSPA+ technological satisfaction.

The RNC selects a cell with the highest priority as the target cell according to the HSPA+ technological

satisfaction. Based on this cell, the RNC searches for the corresponding DC-HSPA cell group andtakes this group as the DC-HSPA cell group, and perform step 4. If there are multiple DC-HSPA cellgroups with the same HSPA+ technological satisfaction, the RNC performs step 3.

3. The RNC select a DC-HSDPA cell group as follows:

If the parameter ServiceDiffDrdSwitch is on, the RNC selects a group with the highest servicepriority.

For details, see section "Cell Group Selection Based on Service Priorities."

If there are multiple DC-HSDPA cell groups with the same highest service priority, the RNC selects agroup based on DL load balancing between these groups.

4. the RNC selects an primary-carrier cell from the DC-HSDPA cell group as follows:

The RNC selects an primary-carrier according to HSPA+ technological satisfaction, cell service priority.If all the HSPA+ technological satisfaction, cell service priority of the two cell are the same. The RNCperforms the following step:

a) If the ULLdbDRDSwitchDcHSDPA switch is turned on, the RNC selects a primary-carrier cellbased on UL load balancing between the two cells. For details, see section "Cell Selection Based onUL Loads."

b) If the ULLdbDRDSwitchDcHSDPA switch is turned off, the RNC selects the cell randomly.

5. If the directed retry fails, the RNC repeats the RAB DRD procedure until all the candidate cell groupsare tried.

Cell Group Selection Based on Service Priori ties

If different DC-HSDPA cell groups support the same HSPA+ technologies, these groups are ranked onthe basis of their service priorities.

The service priority of a DC-HSDPA cell group is determined by the highest service priority of the twocells in the group.

Table 4-1 lists the reference service priorities for different service bearers.

Table 4-1 Reference service priorities

UL and DL Service Bearers Reference Service Priority

DCH and DCH DCH service priority

DCH and HSDPA HSDPA service priority


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4-5

UL and DL Service Bearers Reference Service Priority

DCH and DC-HSDPA HSDPA service priority

HSUPA and DCH HSUPA service priority

HSUPA and HSDPA

HSUPA and DC-HSDPA

HSDPA service priority and then HSUPA service priority

Note:

The HSDPA service priority is used first for the ranking. If the HSDPA servicepriority is not enough for the ranking, the HSUPA service priority is then used.

Cell Selection Based on UL Loads

If the ULLdbDRDSwitchDcHSDPA switch is turned on, the RNC determines the primary-carrier cellbased on UL load balancing between the two cells.

If the current serving cell is not in the target DC-HSDPA cell group, the RNC select a primary cell withlower uplink load. Otherwise the RNC checks whether the remaining UL load resource of the serving cellis lower than or equal to the value of ULLdbDRDLoadRemainThdDCHSDPA:

If the remaining UL load is larger than the threshold, the RNC selects the serving cell as theprimary-carrier cell because its UL load is lower.

If the remaining UL load is less than the threshold, the RNC calculates the difference between the ULload margin of the serving cell and that of the target cell. Then,

− If the difference is greater than the value of ULLdbDRDOffsetDcHSDPA, the RNC selects the targetcell as the primary-carrier cell because its UL load is lower.

− Otherwise, the RNC selects the serving cell as the primary-carrier cell.

4.5.2 Call Admission Control

Overview

In terms of the Call Admission Control (CAC) based on the code resource, CE resource, or Iub resource,DC-HSDPA CAC is not changed, compared with SC-HSDPA CAC.

In terms of the CAC based on the DL power or equivalent number of users (ENU), DC-HSDPA CAC ischanged, that is, the resources of the DC-HSDPA cell group need to be considered.

CAC Based on the DL Power

Figure 4-1 takes the DL power as an example to show the distribution of the resources of the two cells,

which form a DC-HSDPA cell group.


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Figure 4-1 DL power of a DC-HSDPA cell group

The variables in Figure 4-1 are described as follows:

Pmax: maximum DL power of a cell

Pnon-HSPA: DL power used for non-HSPA UEs in a cell

GBPSC-H: DL power required by the HS-PDSCHs to provide GBRs for SC-HSDPA UEs in a cell.

GBPDC-H: DL power required by the HS-PDSCHs to provide GBRs for the DC-HSDPA UEs in theDC-HSDPA cell group.

For a DC-HSDPA UE, the RNC performs the CAC based on the total DL power margin of the DC-HSDPAcell group because the UE can use the DL power margin of any of the two cells after the admission.

For a non-DC-HSDPA UE, the RNC performs the CAC based on the total DL power of the serving cellminus the DL power used for the existing non-DC-HSDPA UEs in this cell. If the admission is successful,the RNC continues to perform the CAC based on the total DL power margin of the DC-HSDPA cellgroup.

CAC Based on the ENU

The CAC based on the ENU is similar to the CAC based on the DL power.

For a DC-HSDPA UE, the RNC performs the CAC based on the total ENU of the DC-HSDPA cell group.

For a non-DC-HSDPA UE, the RNC performs the CAC first based on the ENU of the serving cell. If theadmission is successful, the RNC continues to perform the CAC based on the ENU of the DC-HSDPAcell group.

CAC Based on the Number of HSDPA Users

The HSDPA services have to undergo admission decision based on the number of HSDPA users. TheDC-HSDPA costs one HSDPA license user in only primary cell.

4.5.3 Queuing and Premption

The UE requesting DC-HSDPA services will be queued in the selected primary cell. The queuing

principle is the same as that described in Load Control Feature Parameter Description.


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For DC-HSDPA services, the RNC selects the primary cell in the DC-HSDPA cell group to performpreemption.

4.5.4 Load Reshuff ling and Overload Control

The power of the cell group may trigger basic congestion and overload. If the load of non-HSPA powerand GBP in the two cells is higher than or equal to the sum of the DL LDR/overload trigger threshold ofthe two cells, the cell group is in basic congestion state.

If the cell group is in the basic congestion or overload state, both cells are in the basic congestion oroverload state. The actions to relieve congestion or overload are performed in each cell separately. Theactions to relieve basic congestion are inter-frequency and inter-RAT handover. The actions to relieveoverload are the same as that of RAN11.0.

4.6 Scheduling

The NodeB determine the queuing of this UE and other UEs in one cell. The method of DC-HSDPAscheduling is similar to that of SC-HSDPA scheduling. For details, see the HSDPA Feature ParameterDescription. This section describes only the difference between the two scheduling methods.

The calculation of the scheduling priority of a DC-HSDPA queue needs to consider the different CQIsand Uu rates of the two carriers. In the proportional fair (PF) algorithm and enhanced proportional fair(EPF) algorithm, R/r used for DC-HSDPA is different from that used for SC-HSDPA:

For SC-HSDPA, R represents the throughput corresponding to the CQI reported by the UE for thiscarrier, and r represents the throughput currently achieved by the UE. A greater R/r value indicates ahigher scheduling priority.

For DC-HSDPA, R represents the throughput corresponding to the CQI reported by the UE for thiscarrier, and r represents the total throughput currently achieved by the UE on the two carriers.


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5-1

5 Parameters

Table 5-1 Parameter description

Parameter ID NE MML DescriptionSECONDLOC

ELL

NodeB ADD

DUALCELLGRP(

Mandatory)

Meaning: Local cell ID 2

GUI Value Range: 0~268435455

Actual Value Range: 0~268435455

Unit: none

Default Value: -

DLFREQ NodeB MOD

LOCELL(Optional

)

ADD

LOCELL(Mandatory)

Meaning: The downlink and uplink frequencies of the local cell must stay

within the same frequency band.

Frequency(MHZ) = (Frequency Channel Number / 5) + Offset

Band1:

Common Frequencies Channel Number: [10562-10838] Offset: 0Special Frequencies Channel Number: none Offset: 0

Band2:

Common Frequencies Channel Number: [9662-9938] Offset: 0

Special Frequencies Channel Number: {412, 437, 462, 487, 512, 537,

562, 587, 612, 637, 662, 687} Offset: 1850.1

Band3:


Special Frequencies Channel Number: none Offset: 0

Band4:


Special Frequencies Channel Number: {1887, 1912, 1937, 1962,

1987, 2012, 2037, 2062, 2087} Offset: 1735.1

Band5:



1062, 1087} Offset: 670.1

Band6:


Special Frequencies Channel Number: {1037, 1062} Offset: 670.1

Band7:



2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912}

Offset: 2105.1

Band8:Common Frequencies Channel Number: [2937-3088] Offset: 340


Band9:





Unit: None

Default Value: -

ULFREQ NodeB MOD

LOCELL(Optional

Meaning: The downlink and uplink frequencies of the local cell must stay

within the same frequency band.


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)

ADD

LOCELL(Mandato

ry)

Frequency(MHZ) = (Frequency Channel Number / 5) + Offset

Band1:



Band2:


Special Frequencies Channel Number: {12, 37, 62, 87, 112, 137, 162,

187, 212, 237, 262, 287} Offset: 1850.1

Band3:



Band4:



1762, 1787, 1812, 1837, 1862} Offset: 1380.1

Band5:


Special Frequencies Channel Number: {782, 787, 807, 812, 837, 862}Offset: 670.1

Band6:


Special Frequencies Channel Number: {812, 837} Offset: 670.1

Band7:



2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687}

Offset: 2030.1

Band8:



Band9:





Unit: None

Default Value: -

FIRSTLOCELL NodeB ADD

DUALCELLGRP(

Mandatory)

Meaning: Local cell ID 1

GUI Value Range: 0~268435455 Actual Value Range: 0~268435455

Unit: none

Default Value: -

CfgSwitch BSC6900 SETUCORRMALGOSWITCH(Optional)

Meaning: Channel configuration strategy switch.1) CFG_DL_BLIND_DETECTION_SWITCH: When the switchis on, the DL blind transport format detection function is usedfor single SRB and AMR+SRB bearers. Note that the UE isonly required to support the blind transport format stipulated insection 4.3.1 of 3GPP 25.212.2) 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


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be configured for the HSDPA service.4) CFG_HSDPA_MIMO_SWITCH: When the switch is on,MIMO can be configured for the HSDPA service.5) CFG_HSDPA_MIMO_WITH_64QAM_SWITCH: When theswitch is on and the switches for 64QAM and MIMO are on,

64QAM+MIMO can be configured for the HSDPA service6) 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 theswitch is on, HS-SCCH Less Operation can be configured forthe 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 andthe IMS license is activated, the RNC supports IMS signaling.10) CFG_LOSSLESS_DLRLC_PDUSIZECHG_SWITCH:When the switch is on, DL lossless RLC PDU size change is

supported.11) CFG_LOSSLESS_RELOC_CFG_SWITCH: When theswitch is on and the UE supports lossless relocation, the RNCconfigures lossless relocation for PDCP parameters if therequirements of RLC mode, discard mode, and sequentialsubmission are met. Then, lossless relocation is used for theUE.12) CFG_MULTI_RAB_SWITCH: When the switch is on, theRNC supports multi-RABs combinations such as 2CS,2CS+1PS, 1CS+2PS, and 2PS.13) CFG_PDCP_IPV6_HEAD_COMPRESS_SWITCH: Whenthe switch is on and the PDCP header compression license is

activated, the PDCP header compression algorithm for IPv6 isused at the RNC.14) CFG_PDCP_RFC2507_HC_SWITCH: When the switch ison and the PDCP IPHC license is activated, the PDCP IPHCheader compression algorithm is used for the RNC.15) CFG_PDCP_RFC3095_HC_SWITCH: When the switch ison and the PDCP ROHC license is activated, the PDCP ROHCheader compression algorithm is used for the RNC.16) CFG_PTT_SWITCH: When this switch is on, the RNCidentifies the PTT user based on the QoS attributes in the RABassignment request message. Then, the PTT users are subjectto special processing.17) CFG_RAB_REL_RMV_HSPAPLUS_SWITCH: When thisswitch is on and if an RAB release is performed, the RNCdecides whether to fall back a certain HSPA(HSPA+) featurebased on the requirement of remaining traffic carried by theUE. That is, if an HSPA+ feature is required by the previouslyreleased RAB connection but is not required in the initial bearerpolicy of the remaining traffic, the RNC falls back the feature tosave the transmission resources. The HSPA+ features thatsupport the fallback are MIMO, 64QAM, MIMO+64QAM, UL16QAM, DC-HSDPA, and UL TTI 2ms.

GUI Value Range: CFG_DL_BLIND_DETECTION_SWITCH,CFG_HSDPA_64QAM_SWITCH,

CFG_HSDPA_DC_SWITCH, CFG_HSDPA_MIMO_SWITCH,


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CFG_HSDPA_MIMO_WITH_64QAM_SWITCH,CFG_HSPA_DTX_DRX_SWITCH,CFG_HSPA_HSSCCH_LESS_OP_SWITCH,CFG_HSUPA_16QAM_SWITCH,CFG_IMS_SUPPORT_SWITCH,

CFG_LOSSLESS_DLRLC_PDUSIZECHG_SWITCH,CFG_LOSSLESS_RELOC_CFG_SWITCH,CFG_MULTI_RAB_SWITCH,CFG_PDCP_IPV6_HEAD_COMPRESS_SWITCH,CFG_PDCP_RFC2507_HC_SWITCH,CFG_PDCP_RFC3095_HC_SWITCH, CFG_PTT_SWITCH,CFG_RAB_REL_RMV_HSPAPLUS_SWITCH Actual Value Range:CFG_DL_BLIND_DETECTION_SWITCH,CFG_HSDPA_64QAM_SWITCH,CFG_HSDPA_DC_SWITCH, CFG_HSDPA_MIMO_SWITCH,CFG_HSDPA_MIMO_WITH_64QAM_SWITCH,

CFG_HSPA_DTX_DRX_SWITCH,CFG_HSPA_HSSCCH_LESS_OP_SWITCH,CFG_HSUPA_16QAM_SWITCH,CFG_IMS_SUPPORT_SWITCH,CFG_LOSSLESS_DLRLC_PDUSIZECHG_SWITCH,CFG_LOSSLESS_RELOC_CFG_SWITCH,CFG_MULTI_RAB_SWITCH,CFG_PDCP_IPV6_HEAD_COMPRESS_SWITCH,CFG_PDCP_RFC2507_HC_SWITCH,CFG_PDCP_RFC3095_HC_SWITCH, CFG_PTT_SWITCH,CFG_RAB_REL_RMV_HSPAPLUS_SWITCHUnit: None

Default Value: None

ChannelRetr yHoTimerLen

BSC6900 SETUCOIFTIMER(Optional)

Meaning: This parameter specifies the value of the handoverprotection timer. If services can be set up on channels basedon a higher technique after channel handover is completed, thehandover protection timer will be started. When the timerexpires, the RNC will try to carry services on channels basedon a higher technique. Channel retry cannot be performedbefore this timer expires.



Unit: sDefault Value: None

Recommended Value: 5

MIMO64QAMorDCHSDP ASwitch

BSC6900 SETUFRC(Optional)

Meaning: This switch is used to configure the priority ofMIMO_64QAM or DC-HSDPA. According to different protocols,the following situations may occur: MIMO and DC-HSDPAcannot be used together; both 64QAM and DC-HSDPA aresupported, but cannot be used together. In this case,"MIMO64QAMorDCHSDPASwitch" is used to configure thepriorities of the features. When the priority of MIMO is higherthan that of DC-HSDPA, the priority of 64QAM is higher than

that of DC-HSDPA. When the priority of DC-HSDPA is higher


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than that of MIMO, the priority of DC-HSDPA is higher than thatof 64QAM.

GUI Value Range: MIMO_64QAM, DC_HSDPA Actual Value Range: MIMO_64QAM, DC_HSDPA

Unit: NoneDefault Value: DC_HSDPA

MIMOor64Q AMSwitch

BSC6900 SETUFRC(Optional)

Meaning: According to the R8 protocol, MIMO and 64QAM canbe used together. When the condition is not met, for examplethe cell does not support the features, MIMO may be not usedtogether with 64QAM. In this case, "MIMOor64QAMSwitch" isused to determine whether MIMO or 64QAM is preferentiallyused.

GUI Value Range: MIMO, 64QAM Actual Value Range: MIMO, 64QAM

Unit: NoneDefault Value: MIMO

ULLdbDRDLoadRemainThdDcHSDPA

BSC6900 ADDUCELLDRD(Optional)MODUCELLDRD(Optional)

Meaning: This parameter specifies the threshold of triggeringthe uplink load balance for DC-HSDPA traffic. If the remainingnumber of equivalent users in the uplink is less than the valueof this parameter, uplink load balance for DC-HSDPA traffic istriggered.

GUI Value Range: 0~100 Actual Value Range: 0~100Unit: per centDefault Value: 25

ULLdbDRDLoadRemainThdDcHSDPA

BSC6900 SETUDRD(Optional)

Meaning: This parameter specifies the threshold of triggeringthe uplink load balance for DC-HSDPA traffic. If the remainingnumber of equivalent users in the uplink is less than the valueof this parameter, uplink load balance for DC-HSDPA traffic istriggered.


ULLdbDRDO

ffsetDcHSDP A

BSC6900 SET

UDRD(Optional)

Meaning: If the difference of the remaining number of

equivalent users in the uplink between the target cell and theserving cell is greater than the value of this parameter, thetarget cell meets one of the qualifications to be the candidatecell for directed retry.


ULLdbDRDSwitchDcHSD

PA

BSC6900 ADDUCELLDRD(O

ptional)

Meaning: This parameter specifies whether to enable theuplink load balance for DC-HSDPA traffic. The uplink load

balance is performed on the basis of the equivalent number of


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MODUCELLDRD(Optional)

users.

GUI Value Range: ON, OFF Actual Value Range: ON, OFFUnit: None

Default Value: OFF

ULLdbDRDSwitchDcHSDPA


Meaning: This parameter specifies whether to enable theuplink load balance for DC-HSDPA traffic. The uplink loadbalance is performed on the basis of the equivalent number ofusers.

GUI Value Range: ON, OFF Actual Value Range: ON, OFFUnit: NoneDefault Value: OFF

HspaPlusSwitch

BSC6900 ADDUCELLALGOSWITCH(Optional)MODUCELLALGOSWITCH(Optional)

Meaning: If64QAM,MIMO,E_FACH,DTX_DRX,HS_SCCH_LESS_OPERATION ,64QAM+MIMO,UL16QAM,DC-HSDPA,ULL2ENHANCED and DL L2ENHANCED are selected, thecorresponding function will be enabled; otherwise, disabled.

GUI Value Range: 64QAM, MIMO, E_FACH, DTX_DRX,HS_SCCH_LESS_OPERATION, DL_L2ENHANCED,64QAM_MIMO, UL_16QAM, DC_HSDPA, UL_L2ENHANCED Actual Value Range: 64QAM, MIMO, E_FACH, DTX_DRX,HS_SCCH_LESS_OPERATION, DL_L2ENHANCED,64QAM_MIMO, UL_16QAM, DC_HSDPA, UL_L2ENHANCEDUnit: None

Default Value: None

CmpSwitch BSC6900 SETUCORRMALGOSWITCH(Optional)

Meaning: Compatibility switch.1) CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH: Whenthe switch is on, the IMS signaling assigned by the CNundergoes compatibility processing as an ordinary PS service.When the switch is not on, no special processing is performed.2) CMP_IU_QOS_ASYMMETRY_IND_COMPAT_SWITCH:When the Iu QoS Negotiation function is active and the switchis on, IE RAB Asymmetry Indicator is Symmetric bidirectional,The uplink and downlink RNC negotiation rate is asymmetric,RNC selects the bigger rate as Iu QoS negotiation rate. When

the switch is OFF, RNC select the less rate as Iu QoSnegotiation rate.3) CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH: Whenthe switch is on, the IUUP version can be rolled back to R99when complete configurations are applied during inter-RAThandover.4) CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWITCH:When the switch is on, H2D is performed before a neighboringRNC cell whose version is earlier than R5 is added to theactive set; E2D is performed before a neighboring RNC cellwhose version is earlier than R6 is added to the active set. Ifthe DRNC is of a version earlier than R5, DL services cannotbe mapped on the HS-DSCH. If the DRNC is of a version

earlier than R6, DL services cannot be mapped on the


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HS-EDCH.5) CMP_IUR_SHO_DIVCTRL_SWITCH: When the switch ison, the diversity combination over the Iur interface isconfigured on the basis of that of the local RNC. When theswitch is not on, the diversity combination over the Iur interface

is configured on the basis of services. The flag of diversitycombination over the Iur interface can be set to MUST (for BEservices) or MAY (for other services).6) CMP_UU_ADJACENT_FREQ_CM_SWITCH: when theswitch is on, the RNC initiates the inter-frequencymeasurement without activating the compressed mode if thefollowing two conditions are met: the UE supports thenon-compressed inter-frequency measurement, theinter-frequency neighboring cells work in a same frequencywhich is within 5 MHz higher or lower than the currentfrequency; when the switch is off, the RNC activates thecompressed mode before initiating the inter-frequency

measurement.7) CMP_UU_AMR_DRD_HHO_COMPAT_SWITCH: When theswitch is on, When SRB is set up on DCH, and RNC decides tosetup the AMR through DRD procedure, RNC will execute blindhandover to the target cell, and then setup the AMR RBs on thetarget cell.8) CMP_UU_AMR_SID_MUST_CFG_SWITCH: Fornarrowband AMR services, when the switch is on, the SIDframe is always configured; when the switch is not on, the SIDframe is configured on the basis of CN assignment.9) CMP_UU_FDPCH_COMPAT_SWITCH: When the switch isOFF, if the information element that indicates the F-DPCH

capability of UE exists in the message"RRC_CONNECT_REQ" or "RRC_CONNECT_SETUP_CMP",the F-DPCH capability depends on that indicator. In other case,it means UE does not support F-DPCH. When the switch isON, if the information element that indicates the F-DPCHcapability of UE exists in the message"RRC_CONNECT_REQ" or "RRC_CONNECT_SETUP_CMP",the F-DPCH capability depends on that indicator. If thatinformation element does not exist, UE supports F-DPCH whenall the conditions are met: a) the version of UE is Release 6. b)UE supports HS-PDSCH.10) CMP_UU_IGNORE_UE_RLC_CAP_SWITCH: When theswitch is on, the RAB assignment request and the subsequentRB setup procedure proceed if the RLC AM capabilities of theUE fail to meet the minimum RLC TX/RX window bufferrequirement of the RAB to be setup. When the switch is not on,the RAB assignment request is rejected.11) CMP_UU_INTRA_FREQ_MC_BESTCELL_CIO_SWITCH:When this switch is on, the cell individual offset (CIO) of thebest cell is always set to 0 in the INTRA-FREQUENCYMEASUREMENT CONTROL messages. Otherwise, the CIOinformation of the best cell is not carried in theINTRA-FREQUENCY MEASUREMENT CONTROLmessages.12) CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWITCH:

When the switch is on, the cell synchronization information


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traced by the IOS need to be reported during the RRCmeasurement period.13) CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITCH:When the switch is on, the active set update is in the sameprocedure as the change of the serving cell. When the switch is

not on, the serving cell is changed after the UE updates theactive set and delivers reconfiguration of physical channels.This switch is applicable only to R6 or above UEs.14) CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SWITCH:When the switch is on, channel transition is in the sameprocedure as the change of the serving cell. When the switch isnot on, the serving cell is changed after the UE performschannel transition and delivers reconfiguration of physicalchannels.15) CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SWITCH:By default, the switch is on. In this case, the Alternative E-bit isnot configured for L2.

GUI Value Range:CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH,CMP_IU_QOS_ASYMMETRY_IND_COMPAT_SWITCH,CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH,CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWITCH,CMP_IUR_SHO_DIVCTRL_SWITCH,CMP_UU_ADJACENT_FREQ_CM_SWITCH,CMP_UU_AMR_DRD_HHO_COMPAT_SWITCH,CMP_UU_AMR_SID_MUST_CFG_SWITCH,CMP_UU_FDPCH_COMPAT_SWITCH,CMP_UU_IGNORE_UE_RLC_CAP_SWITCH,

CMP_UU_INTRA_FREQ_MC_BESTCELL_CIO_SWITCH,CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWITCH,CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITCH,CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SWITCH,CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SWITCH Actual Value Range:CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH,CMP_IU_QOS_ASYMMETRY_IND_COMPAT_SWITCH,CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH,CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWITCH,CMP_IUR_SHO_DIVCTRL_SWITCH,CMP_UU_ADJACENT_FREQ_CM_SWITCH,CMP_UU_AMR_DRD_HHO_COMPAT_SWITCH,CMP_UU_AMR_SID_MUST_CFG_SWITCH,CMP_UU_FDPCH_COMPAT_SWITCH,CMP_UU_IGNORE_UE_RLC_CAP_SWITCH,CMP_UU_INTRA_FREQ_MC_BESTCELL_CIO_SWITCH,CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWITCH,CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITCH,CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SWITCH,CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SWITCHUnit: NoneDefault Value: None

DrSwitch BSC6900 SET

UCORRMALG

Meaning: Direct retry switch.

1) DR_RRC_DRD_SWITCH(DRD switch for RRC connection):


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OSWITCH(Optional)

When the switch is on, DRD and redirection is performed forRRC connection if retry is required.2) DR_RAB_SING_DRD_SWITCH(DRD switch for singleRAB): When the switch is on, DRD is performed for singleservice if retry is required.

3) DR_RAB_COMB_DRD_SWITCH(DRD switch for combineRAB): When the switch is on, DRD is performed for combinedservices if retry is required.

GUI Value Range: DR_RRC_DRD_SWITCH,DR_RAB_SING_DRD_SWITCH,DR_RAB_COMB_DRD_SWITCH Actual Value Range: DR_RRC_DRD_SWITCH,DR_RAB_SING_DRD_SWITCH,DR_RAB_COMB_DRD_SWITCHUnit: NoneDefault Value: None

DLFREQ NodeBMODLOCELL(Optional) ADDLOCELL(Mandatory)

Meaning: The downlink and uplink frequencies of the local cellmust stay within the same frequency band.Frequency(MHZ) = (Frequency Channel Number / 5) + OffsetBand1:Common Frequencies Channel Number: [10562-10838]Offset: 0Special Frequencies Channel Number: noneOffset: 0Band2:Common Frequencies Channel Number: [9662-9938]Offset: 0Special Frequencies Channel Number: {412, 437, 462,487, 512, 537, 562, 587, 612, 637, 662, 687} Offset:1850.1Band3:Common Frequencies Channel Number: [1162-1513]Offset: 1575Special Frequencies Channel Number: noneOffset: 0Band4:Common Frequencies Channel Number: [1537-1738]Offset: 1805Special Frequencies Channel Number: {1887, 1912, 1937,1962, 1987, 2012, 2037, 2062, 2087} Offset: 1735.1

Band5:Common Frequencies Channel Number: [4357-4458]Offset: 0Special Frequencies Channel Number: {1007, 1012, 1032,1037, 1062, 1087} Offset: 670.1Band6:Common Frequencies Channel Number: [4387-4413]Offset: 0Special Frequencies Channel Number: {1037, 1062}Offset: 670.1Band7:Common Frequencies Channel Number: [2237-2563]

Offset: 2175


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Special Frequencies Channel Number: {2587, 2612, 2637,2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887,2912} Offset: 2105.1Band8:Common Frequencies Channel Number: [2937-3088]

Offset: 340Special Frequencies Channel Number: noneOffset: 0Band9:Common Frequencies Channel Number: [9237-9387]Offset: 0Special Frequencies Channel Number: noneOffset: 0

GUI Value Range: 0~65535 Actual Value Range: 0~65535Unit: None

Default Value: -

ULFREQ NodeBMODLOCELL(Optional) ADDLOCELL(Mandatory)

Meaning: The downlink and uplink frequencies of the local cellmust stay within the same frequency band.Frequency(MHZ) = (Frequency Channel Number / 5) + OffsetBand1:Common Frequencies Channel Number: [9612-9888]Offset: 0Special Frequencies Channel Number: noneOffset: 0Band2:Common Frequencies Channel Number: [9262-9538]Offset: 0Special Frequencies Channel Number: {12, 37, 62, 87,112, 137, 162, 187, 212, 237, 262, 287} Offset:1850.1Band3:Common Frequencies Channel Number: [937-1288]Offset: 1525Special Frequencies Channel Number: noneOffset: 0Band4:Common Frequencies Channel Number: [1312-1513]Offset: 1450Special Frequencies Channel Number: {1662, 1687, 1712,

1737, 1762, 1787, 1812, 1837, 1862} Offset: 1380.1Band5:Common Frequencies Channel Number: [4132-4233]Offset: 0Special Frequencies Channel Number: {782, 787, 807,812, 837, 862} Offset: 670.1Band6:Common Frequencies Channel Number: [4162-4188]Offset: 0Special Frequencies Channel Number: {812, 837}Offset: 670.1Band7:

Common Frequencies Channel Number: [2012-2338]


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Offset: 2100Special Frequencies Channel Number: {2362, 2387, 2412,2437, 2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662,2687} Offset: 2030.1Band8:

Common Frequencies Channel Number: [2712-2863]Offset: 340Special Frequencies Channel Number: noneOffset: 0Band9:Common Frequencies Channel Number: [8762-8912]Offset: 0Special Frequencies Channel Number: noneOffset: 0

GUI Value Range: 0~65535 Actual Value Range: 0~65535

Unit: NoneDefault Value: -

TCell BSC6900 ADDUCELLQUICKSETUP(Mandatory)

Meaning: Difference between the System Frame Number(SFN) and NodeB Frame Number (BFN) of the NodeB whichthe cell belongs to. It is recommended that Tcell of differencecells under one NodeB should be unique. For detailedinformation of this parameter, refer to 3GPP TS 25.433.

GUI Value Range: CHIP0, CHIP256, CHIP512, CHIP768,CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048,CHIP2304 Actual Value Range: CHIP0, CHIP256, CHIP512, CHIP768,CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048,CHIP2304Unit: chipDefault Value: None

TCell BSC6900 ADDUCELLSETUP(Mandatory)MODUCELLSETUP(Optional)

Meaning: Difference between the System Frame Number(SFN) and NodeB Frame Number (BFN) of the NodeB whichthe cell belongs to. It is recommended that Tcell of differencecells under one NodeB should be unique. For detailedinformation of this parameter, refer to 3GPP TS 25.433.

GUI Value Range: CHIP0, CHIP256, CHIP512, CHIP768,

CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048,CHIP2304 Actual Value Range: CHIP0, CHIP256, CHIP512, CHIP768,CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048,CHIP2304Unit: chipDefault Value: None

ServiceDiffDr dSwitch

BSC6900 ADDUCELLDRD(Optional)MODUCELLDRD(O

ptional)

Meaning: Whether the service steering DRD algorithm isapplied.

GUI Value Range: ON, OFF Actual Value Range: ON, OFF

Unit: None


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WCDMA RAN

DC-HSDPA



Issue 01 (2010-03-30)

Default Value: OFF

ServiceDiffDr dSwitch


Meaning: Whether the service steering DRD algorithm isapplied. Cell-level service steering DRD switch, if configured,needs to be enabled.

GUI Value Range: ON, OFF Actual Value Range: ON, OFFUnit: NoneDefault Value: OFF


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DC-HSDPA 6 Counters



6-1

6 Counters

For details, see the BSC6900 UMTS Performance Counter Reference and the NodeB PerformanceCounter Reference.


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DC-HSDPA 7 Glossary



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7 Glossary

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


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DC-HSDPA 8 Reference Documents

8 Reference Documents

[1] HSDPA Feature Parameter Description

[2] Radio Bearers Feature Parameter Description

[3] Load Control Feature Parameter Description

[4] Directed Retry Decision Feature Parameter Description

[5] Handover Feature Parameter Description

[6] Green BTS Feature Parameter Description

[7] 3GPP TS 25.331, "Radio Resource Control (RRC)"

[8] 3GPP TS 25.306, "UE Radio Access capabilities"