Dual Carrier/Multi Carrier Hsdpa Ran 13 Huawei
Short Description
dual Carrier/Multi Carrier HSdpa/42 Mbps implementation in Huawei 3G Network...
Description
WCDMA RAN
DC-HSDPA 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 DC-HSDPA
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 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 Description ..............................................................................................................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 Preemption...................................................................................................... 4-6 4.5.4 Load Reshuffling and Overload Control ............................................................................... 4-7 4.6 Scheduling..................................................................................................................................... 4-7 4.7 Activating or Deactivating Secondary Cell .................................................................................... 4-7
5 Engineering Guidelines...........................................................................................................5-1 5.1 DC-HSDPA .................................................................................................................................... 5-1 5.1.1 When to Use DC-HSDPA ..................................................................................................... 5-1 5.1.2 Factors to Consider During Feature Deployment ................................................................. 5-1 5.1.3 Recommended Settings for Key Parameters ....................................................................... 5-1 5.1.4 Feature Monitoring ............................................................................................................... 5-2 5.2 Activating or Deactivating Secondary Cell .................................................................................... 5-2
6 Parameters .................................................................................................................................6-1 7 Counters ......................................................................................................................................7-1 8 Glossary ......................................................................................................................................8-1 9 Reference Documents .............................................................................................................9-1
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WCDMA RAN DC-HSDPA
1 Introduction
1 Introduction 1.1 Scope This document describes the feature Dual-Carrier High Speed Downlink Packet Access (WRFD-010696 DC-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 not described in the earlier version.
Document Issues The document issues are as follows:
02 (2011-06-30)
01 (2011-04-30)
Draft B (2011-03-30)
Draft A (2010-12-30)
02 (2011-06-30) This is the document for the second commercial release of RAN13.0. Compared with issue 01 (2011-04-30) of RAN13.0, this issue has the following changes. Change Type
Change Description
Parameter Change
Feature change
None.
None.
Editorial change
The engineering guideline about DC-HSDPA is added. For details, see 5.1 “DC-HSDPA.”
None.
The engineering guideline about activating or deactivating secondary cell moved from 4.7 “Activating or Deactivating Secondary Cell” to 5.2 “Activating or Deactivating Secondary Cell.”
None.
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1 Introduction
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 issue Draft A (2010-12-30) of RAN13.0, this issue optimizes the information about activating or deactivating secondary cell. For details, see 4.7 “Activating or Deactivating Secondary Cell.”
Draft A (2010-12-30) This is the draft of the document for RAN13.0. Compared with issue 01 (2010-03-30) of RAN12.0, this issue adds the information about activating or deactivating secondary cell. For details, see 4.7 “Activating or Deactivating Secondary Cell.”
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2 Overview
2 Overview Similar to Long Term Evolution (LTE), the HSPA technology is also influenced by the multi-carrier aggregations. The performance and throughput of HSPA can be improved by using more bandwidth provided by multi-carriers. The throughput of end users can be double or more as compared to single-carrier HSPA. In 3GPP Release 8 or earlier, only a single carrier can be used for the HSDPA transmission of a UE. The single carrier HSDPA is hereafter referred to as SC-HSDPA. 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, which is named Dual Carrier HSDPA (DC-HSDPA). 3GPP Release or later specifies the use of more than two carriers for a single subscriber without the restrictions on the use of the same frequency band. Figure 2-1 shows the 3GPP evolution of MC-HSDPA. Figure 2-1 3GPP evolution of MC-HSDPA
The requirements of DC-HSDPA are listed in Table 2-1. 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 supports HS-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 each cell, the UE can monitor a maximum of three HS-SCCHs at the same time. In 3GPP Release 8, HS-DSCH UE categories 21, 22, 23, and 24 are added to support DC-HSDPA. In 3GPP Release 9 or later, more HS-DSCH UE categories support DC-HSDPA.
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3 Basic Principle
3 Basic Principle 3.1 Overview DC-HSDPA allows a UE to set up HSDPA connections with two inter-frequency synchronous cells that have the same coverage. In the downlink, the UE can receive different data through HS-DSCHs from the two 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 are in the same downlink resource group of a NodeB.
The two cells operate on adjacent carriers with a frequency spacing less than or equal to 5 MHz in the 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 rate doubles 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 UE perspective:
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Primary cell (also called anchor cell) carries all the types of channel for a UE. Each UE has only one primary cell.
Secondary cell (also called supplementary cell) carries only three types of downlink (DL) channel for a UE. 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 UE perspective
From the RAN perspective, both the cells can work as primary cell and secondary cell. The two cells can be deployed equivalently with the same configuration, as shown in Figure 3-3. 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 UEs based on the load and radio bearer scheme. Both cells can work independently for non-DC-HSDPA UEs or legacy HSDPA UEs. Alternatively, the primary cell is configured with all channels whereas the secondary cell is configured with only HS-DSCH and P-CPICH. The secondary cell cannot work independently. This is called non-equivalent deployment. Non-equivalent deployment is not supported.
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3 Basic Principle
3.3 Channel Mapping Overview Figure 3-4 Channel mapping of DC-HSDPA
A DC-HSDPA UE receives two HS-DSCH transport channels from two cells of the same NodeB. Each HS-DSCH is mapped to one HS-SCCH and several HS-PDSCH physical channels. The uplink DCH or E-DCH of DC-HSDPA is carried only on the primary cell. All dedicated physical control channels DPCCH and DPCH/F-DPCH in the uplink and downlink are carried on the primary cell.
HS-SCCH In 3GPP Release 8 or earlier, a UE can monitor a maximum of four HS-SCCHs at the same time, according to 3GPP TS 25.331. In DC-HSDPA cell group, the HS-SCCHs on the primary cell are independent of those on the secondary cell. A UE can monitor a maximum of six HS-SCCHs at the same time. 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, and type 3 for MIMO. DC-HSDPA uses only HS-SCCH type 1. DC-HSDPA with HS-SCCH Less Operation uses 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 channel to the primary cell. The HS-DPCCH uses a new frame format that enables it to carry CQI and HARQ ACK/NACK information of the two cells in a Transmission Time Interval (TTI).
3.4 UE Categories In 3GPP Release 8, HS-DSCH UE categories 21, 22, 23, and 24 are added to support DC-HSDPA, as listed in Table 3-1 (similar to that in 3GPP TS 25.306). In 3GPP Release 9 or later, more HS-DSCH UE categories support DC-HSDPA.
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Table 3-1 FDD HS-DSCH physical layer categories 21 to 24 HS-DSCH Category
Maximu Minimum m Inter-TTI Interval Number of HS-DSCH Codes Received
Maximum Number of Bits of an HS-DSCH Transport Block Received Within
Total Number of Soft Channel Bits
Supported Modulatio n Without MIMO Operation or Dual Cell Operation
an HS-DSCH TTI Category 21
15
1
23370
345600
Category 22
15
1
27952
345600
Category 23
15
1
35280
518400
Category 24
15
1
42192
518400
Supported Modulation Simultaneo us with MIMO Operation and Without Dual Cell Operation
Suppo rted Modul ation with Dual Cell Opera tion
QPSK, 16QA M -
-
QPSK, 16QA M,64Q AM
The requirements for the UEs of different HS-DSCH categories when DC-HSDPA is not configured are as follows:
The UE of HS-DSCH category 21 needs to support at least one of the 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 the HS-DSCH categories 10, 14, 16, and 18.
The UE of HS-DSCH category 23 needs to support at least one of the HS-DSCH categories 13, 14, 17, 18, 19, and 20.
The UE of HS-DSCH category 24 needs to support at least one of the HS-DSCH categories 14, 18, and 20.
The peak rate can reach 42.192 Mbit/s (= 2 x TB_Size/TTI = 2 x 42192/2) at the MAC layer, supported by the CN. The DC-HSDPA UEs and MIMO UEs can co-exist in the same cell, but one UE cannot use MIMO and DC-HSDPA together.
3.5 NodeB MAC-ehs DC-HSDPA requires the NodeB to support MAC-ehs. A single MAC-ehs entity supports HS-DSCH transmission in more than one cell served by the same NodeB (FDD only). Queues of a DC-HSDPA UE are common for the two cells. The scheduler in the NodeB arranges the data transmission of queues on the two cells. DC-HSDPA transmissions can be regarded as independent transmissions over two HS-DSCH channels. There will be a separate HARQ entity on each HS-DSCH channel, that is, one HARQ process per TTI for single carrier transmission and two HARQ processes per TTI for dual carrier transmission. MAC-ehs selects Transport Format and Resource Combination (TFRC) for the MAC-ehs Protocol Data Units (PDUs) of each cell independently based on the available resources of the cells and the CQI reported by the UE.
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3 Basic Principle
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 of traffic flow to a DC-HSDPA UE. Figure 3-6 Example of traffic flow to a DC-HSDPA UE
3.6 Impact on Interfaces To support DC-HSDPA, new Information Elements (IEs) are added to signaling messages. UEs and cells can report their capacity of DC-HSDPA to the RNC through the Iub and Uu interfaces. The RNC instructs cells to set up or reconfigure radio links with DC-HSDPA through the Iub interface. The RNC instructs UEs to set up or reconfigure radio bearers with DC-HSDPA through the Uu interface. Issue 02 (2011-06-30)
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Impact on Iub When a cell receives the AUDIT REQUEST message or when a new cell is set up or a cell capability is changed, the NodeB reports the cell capability to the RNC in Audit Response message or Resource State Indication message
When a cell supports DC-HSDPA, the NodeB sets the Multi Cell Capability Info IE to Multi Cell Capable for the cell in Audit Response and sends the message to the RNC.
If the cell is a primary serving cell, all the possible secondary serving cells in the same sector must be listed in the Possible Secondary Cell List IE.
When the RNC instructs a cell to set up a radio link with DC-HSDPA, the information of the secondary serving cell is added to the Radio Link Setup procedure or Radio Link Addition procedure. The Additional HS Cell Information RL Setup IE is added to the Radio Link Setup Request/Response/Failure messages and Radio Link Addition Request/Response/Failure messages to indicate the usage of DC-HSDPA and associated parameters.
Impact on Uu In the RRC CONNECTION REQUEST message, the Multi cell support IE is added to indicate the UE capability of supporting multiple cells. In the RRC Connection Setup Complete and UE Capability Information message, the Physical Channel Capability IE is extended to indicate the UE capability of DC-HSDPA. The Downlink secondary cell info FDD IE in the following signaling messages indicates the usage of secondary 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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4 Technical Description
4 Technical Description 4.1 Overview This document describes only the functions that are different from those of SC-HSDPA. These functions are as follows:
Radio Bearers
State transition
Mobility management
Load control
Scheduling
For details about other functions, see the HSDPA Feature Parameter Description.
4.2 Radio Bearers When the downlink transport channel HS-DSCH is selected for streaming or BE services or combined service with streaming or BE, DC-HSDPA is applied. When there is only a CS service, PS conversational service, IMS signaling, or SRB signaling, DC-HSDPA is not applied because of small traffic volume and low transmission delay. Before using DC-HSDPA for a service, you need to configure the feature on both RNC and NodeB.
On the NodeB: − You
need to set up two cells to support DC-HSDPA. The two cells operate on adjacent carriers with a frequency spacing of 5 MHz or smaller in the same frequency band. The two carriers are specified by frequency channel numbers (DLFREQ/ ULFREQ).
− The
two cells are configured as a DC-HSDPA group (ADD DUALCELLGRP). The two cells are specified by the parameters (FIRSTLOCELL, SECONDLOCELL).
On the RNC: − You
need to turn on the switches CfgSwitch: CFG_HSDPA_DC_SWITCH and HspaPlusSwitch: DC_HSDPA.
− The
preferred feature should be set to DC_HSDPA in the parameter MIMO64QAMorDcHSDPASwitch.
− 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 can be used at the same time. The Continuous Packet Connectivity (CPC) function can be enabled in the DC-HSDPA cells with the following limitations:
CPC DTX is applicable to primary cell only because there will be no uplink control channel for the DC-HSDPA UE on secondary cell
CPC HS-SCCH Less Operation is applicable to primary cell only and is not applicable to secondary cell.
CPC DRX for a DC-HSDPA UE on two carriers is similar to that for a UE on a single cell.
HSPA+ based on 3GPP Release 8 is optional for the operators to select DC-HSDPA or MIMO. However, in later 3GPP releases, the DC-HSDPA and MIMO should be deployed together.
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In RAN12.0, a cell is enabled with the DC-HSDPA and MIMO functions at the same time but a UE can use only one of the functions.
In RAN12.0, the two cells in a DC-HSDPA cell group cannot support MIMO at the same time. Only one of them can support MIMO.
In RAN13.0, a cell is enabled with the DC-HSDPA and MIMO functions at the same time and both cells in 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. The Transmission Control Protocol (TCP) is widely used in data transmission. When a file is being downloaded, the TCP acknowledgement is sent in the uplink. The higher the rate of download is, the larger the bandwidth is required in the uplink. If the download rate reaches up to 42 Mbit/s, the uplink rate of TCP acknowledgement is much higher than 384 kbit/s, the highest supported by the DCH. HSUPA bearer is required to provide high bandwidth in the uplink to transmit TCP acknowledgement without delay. The downlink rate of 42 Mbit/s per user can be supported only when HSUPA is used.
4.3 State Transition DC-HSDPA state transition, based on the SC-HSDPA state transition strategy, considers the primary cell during state transition. Assume that a DC-HSDPA UE preferentially selects F2 as the primary cell. Then, the DC-HSDPA state transition strategy 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, the UE attempts to access other DC-HSDPA cells in a DRD candidate cell set. 3. If the UE is allowed to access one of the candidate cells, the UE moves to the CELL_DCH state in this cell. 4. If the UE is not allowed to access any of the candidate cells, the UE performs the following operations: − If
the UL service is 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 original state. − If
the UL service is carried on the DCH, the state transition fails and the UE stays in the original state.
To move from the CELL_DCH state to the CELL_FACH state, the DC-HSDPA UE performs the same state transition as an SC-HSDPA UE in the primary-carrier cell. To move from the CELL_FACH state to the CELL_PCH state, the DC-HSDPA UE performs the same state transition as an SC-HSDPA UE because the DC-HSDPA UE in the CELL_FACH state can use only one frequency.
4.4 Mobility Management The introduction of DC-HSDPA has no impact on handover measurement triggering and handover decision processes. During a handover, however, the RNC needs to decide whether DC-HSDPA is used after the handover if the target cell supports DC-HSDPA, or whether non-DC-HSDPA is used after the handover if the target cell does not support DC-HSDPA. This section describes only the mobility management of DC-HSDPA. For other information about handover, see the Handover Feature Parameter Description.
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Measurement Control The active set is maintained for primary carriers only. For DC-HSDPA intra-frequency handover, only the signal quality of the primary-carrier cell and its neighboring cells needs to be measured. For DC-HSDPA inter-frequency handover, except for the signal quality of the primary-carrier cell and its neighboring cells, the signal quality of the secondary-carrier cell also needs to be measured like an inter-frequency neighboring cell. If the UE has a dual-frequency receiver, it can perform inter-frequency measurement without starting the compressed mode if all of the following conditions are met:
The CmpSwitch: CMP_UU_ADJACENT_FREQ_CM_SWITCH is turned on.
The value of the IE "Adjacent frequency measurements without compressed mode" reported by the UE is TRUE.
For the UE that supports DC-HSDPA: − If
the UE has a DC-HSDPA service, all the cells involved in inter-frequency measurement are at the same frequency as the secondary carrier.
− If
the UE does not have a DC-HSDPA service, all the cells involved in inter-frequency measurement are at the same frequency, with a 5 MHz spacing from the current cell but within the same band as the current cell.
Handover Between DC-HSDPA Cells When receiving a measurement report indicating that the signal quality of a DC-HSDPA cell is better than that 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 radio link configuration is successful, the RNC performs the handover.
If the admission to the target cell is allowed but the radio link configuration is unsuccessful, the RNC 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 the DCH and performs 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 Cell When receiving a measurement report indicating that the signal quality of a non-DC-HSDPA cell is better than that of the serving cell (a DC-HSDPA cell), the RNC reconfigures the service to DCH or HSDPA and continues to perform the 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 than that 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 such HSPA+ technologies are ranked lower than some HSPA+ technologies supported by both the target cell and 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 enable them to support the higher-ranked HSPA+ technologies.
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4.5 Load Control 4.5.1 RAB DRD During the RB setup or state transition from CELL_FACH to CELL_DCH, the RNC makes DRDs to select a DC-HSDPA cell group and then select a primary-carrier cell for the UE. For details about 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 requirements. For details, see the Directed Retry Decision Feature Parameter Description. 2. The RNC selects a 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 and takes this group as the DC-HSPA cell group, and go to step 4. If there are multiple DC-HSPA cell groups with the same HSPA+ technological satisfaction, the RNC performs step 3. 3. The RNC selects a DC-HSDPA cell group as follows:
If the parameter ServiceDiffDrdSwitch is on, the RNC selects a group with the highest service priority. 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 a group based on DL load balancing between these groups.
4. The RNC selects a primary-carrier cell from the DC-HSDPA cell group as follows: The RNC selects a primary-carrier according to HSPA+ technological satisfaction and cell service priority. If all the HSPA+ technological satisfaction, cell service priority and downlink load of the two cells are the same, the RNC performs the following steps: a) If the ULLdbDRDSwitchDcHSDPA switch is turned on, the RNC selects a primary-carrier cell based on UL load balancing between the two cells. For details, see section "Cell Selection Based on UL Load." 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 the procedure is performed for all the candidate cell groups.
Cell Group Selection Based on Service Priorities If different DC-HSDPA cell groups support the same HSPA+ technology, these groups are ranked by service priority. The service priority of a DC-HSDPA cell group is determined by the highest service priority of the two cells 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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DCH and DC-HSDPA
HSDPA service priority
HSUPA and DCH
HSUPA service priority
HSUPA and HSDPA
HSDPA service priority and then HSUPA service priority
HSUPA and DC-HSDPA
Note: The HSDPA service priority is used first for the ranking. If the HSDPA service priority is not enough for the ranking, the HSUPA service priority is used.
Cell Selection Based on UL Load If the ULLdbDRDSwitchDcHSDPA switch is turned on, the RNC determines the primary-carrier cell based on UL load balancing between the two cells. If the current serving cell is not in the target DC-HSDPA cell group, the RNC selects a primary cell with lower uplink load. Otherwise, the RNC checks whether the remaining UL load resource of the serving cell is lower than or equal to the value of ULLdbDRDLoadRemainThdDCHSDPA:
If the remaining UL load is above the threshold, the RNC selects the serving cell as the primary-carrier cell because its UL load is lower.
If the remaining UL load is below the threshold, the RNC calculates the difference between the UL load 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 target cell 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 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 CAC based on the DL power or equivalent number of users (ENU), DC-HSDPA CAC is changed, that is, the resources of the DC-HSDPA cell group need to be considered.
CAC Based on the DL Power Figure 4-1 shows the resource allocation in the two cells of a DC-HSDPA cell group. In this figure, the DL power is taken as an example.
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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 the DC-HSDPA cell group.
For a DC-HSDPA UE, the RNC performs CAC based on the total DL power margin of the DC-HSDPA cell 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 CAC based on the total DL power of the serving cell minus 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 cell group.
CAC Based on the ENU The CAC based on the Equivalent Number of Users (ENU) is similar to CAC based on the DL power. For a DC-HSDPA UE, the RNC performs CAC based on the total ENU of the DC-HSDPA cell group. For a non-DC-HSDPA UE, the RNC first performs CAC based on the ENU of the serving cell. If the admission is successful, the RNC then continues to perform the CAC based on the ENU of the DC-HSDPA cell group.
CAC Based on the Number of HSDPA Users The HSDPA services have to make admission decision based on the number of HSDPA users. The DC-HSDPA costs only one HSDPA license user in the primary cell.
4.5.3 Queuing and Preemption The UE requesting DC-HSDPA services will be queued in the selected primary cell. The queuing principle is the same as that described in the 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 perform preemption.
4.5.4 Load Reshuffling and Overload Control The power of the cell group may trigger basic congestion and overload. If the load of non-HSPA power and GBP in the two cells is higher than or equal to the sum of the DL LDR/overload trigger threshold of the 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 or overload state. The operations to relieve congestion or overload are performed in each cell separately. The operations to relieve basic congestion are performed for inter-frequency and inter-RAT handover. The actions to relieve overload are the same as that of RAN11.0.
4.6 Scheduling The NodeB selects the first cell from the two cells to perform the scheduling process. If the first cell cannot transmit all the data of a UE, the NodeB selects the second cell to provide services. After determining the cell, the NodeB needs to determine the queuing of this UE and other UEs in this cell. The method of DC-HSDPA scheduling is similar to that of SC-HSDPA scheduling. For details, see the HSDPA Feature Parameter Description. 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 different CQIs and 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 this carrier, and r represents the throughput currently achieved by the UE. A greater R/r value indicates a higher scheduling priority.
For DC-HSDPA, R represents the throughput corresponding to the CQI reported by the UE for this carrier, and r represents the total throughput currently achieved by the UE on the two carriers.
4.7 Activating or Deactivating Secondary Cell This section describes the feature WRFD-010713 Traffic-Based Activation and Deactivation of the Supplementary Carrier In Multi-carrier. The NodeB periodically monitors the traffic volume of a UE and decides whether to activate or deactivate the secondary cell in the DC-HSDPA/DC-MIMO cell group through HS-SCCH order.
If data in MAC-ehs is insufficient and the throughput of MAC-ehs is low, the NodeB instructs the UE to deactivate the secondary cell.
If data in MAC-ehs is sufficient and the throughput of MAC-ehs is high, the NodeB instructs the UE to activate the secondary cell.
The deactivation neither changes a DC-HSDPA cell to a non-DC-HSDPA cell nor changes the HS-DSCH UE category. After deactivation, the NodeB regards the UE as a SC-HSDPA UE, and after activation, the NodeB regards the UE as a DC-HSDPA UE. The function is controlled by the SECCELLACTDEASW switch in the NodeB MML command SET MACHSPARA.
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The activation or deactivation is applicable to the UEs configured with DC-HSDPA, DC-MIMO, or DB-HSDPA in the downlink and to those configured with DCH or SC-HSUPA in the uplink. The function is not applicable to DC-HSUPA because DC-HSUPA depends on DC-HSDPA. The activation or deactivation of the UE takes effect after 12 timeslots when the UE receives the HS-SCCH order. The activation or deactivation of the NodeB takes effect immediately after the NodeB receives an ACK of HS-SCCH order from the UE. If the NodeB receives an DTX from the UE, the NodeB retransmits or discards the HS-SCCH order.
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5 Engineering Guidelines 5.1 DC-HSDPA 5.1.1 When to Use DC-HSDPA DC-HSDPA is recommended in the following situations:
The operator needs DC-HSDPA to provide two continuous absolute radio frequency channel numbers (ARFCNs) within the same frequency band and has adequate spectral resources to support this.
The traffic model on the network is close to a burst traffic model, in which case DC-HSDPA yields increased gains in system throughput.
The network downlink load is light, in which case DC-HSDPA increases the peak data rate for users and noticeably improves the experience of users at cell edges.
The network downlink load is heavy, in which case DC-HSDPA increases system throughput. The system throughput increase is inversely related to the user number.
If the network is heavily loaded with a large number of users, DC-HSDPA can be used but only yields subtle gains.
5.1.2 Factors to Consider During Feature Deployment Consider the following factors when deploying HS-DSDPA:
Proportion of DC-HSDPA users on the network: A higher proportion of DC-HSDPA users results in better system throughput gains.
Uplink capabilities: If dedicated channels (DCHs) are used on the uplink, the downlink peak rates for DC-HSDPA users are restricted, resulting in decreased gains. HSUPA is recommended on the uplink for DC-HSDPA.
Bandwidth over the Iub interface: If the bandwidth over the Iub interface is inadequate, DC-HSDPA cannot yield notable gains. An appropriate bandwidth is required over the Iub interface.
Packet loss rate on the core network: If the core network has a high packet loss rate, gains yielded by DC-HSDPA decrease during single-thread FTP sessions. An appropriate packet loss rate is required for the core network.
5.1.3 Recommended Settings for Key Parameters The following key parameters are involved in this feature:
MIMO64QAMorDCHSDPASwitch This parameter specifies priorities for MIMO+64QAM and DC-HSDPA. If the network supports both MIMO+64QAM and DC-HSDPA, consult with the operator to determine which technique takes priority. If the network load is heavy, set this parameter to MIMO+64QAM. Otherwise, set this parameter to DC-HSDPA.
CmpSwitch: CMP_UU_ADJACENT_FREQ_CM_SWITCH When this switch is turned on and the RNC needs to start inter-frequency measurement, the RNC considers whether to allow the UE not to use the compressed mode for ARFCNs within 5 MHz from the current ARFCN. If the UE is allowed to do so, the RNC starts inter-frequency measurement without requiring the UE to use the compressed mode. For a DC-HSDPA network, it is recommended that this switch be turned off, because the UE currently cannot report whether it is allowed not to use the compressed mode for ARFCNs within 5 MHz from the current ARFCN.
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5.1.4 Feature Monitoring To determine the number of DC-HSDPA radio access bearers (RABs) or DC-HSDPA users in a cell, check the values of the following RNC counters:
VS.HSDPA.RAB.DC.AttEstab: number of attempts to set up DC-HSDPA RABs on the primary carrier in the DC-HSDPA cell
VS.HSDPA.RAB.DC.SuccEstab: number of successful DC-HSDPA RAB setups on the primary carrier in the DC-HSDPA cell
VS.HSDPA.DC.PRIM.UE.Mean.Cell: average number of users that have chosen the current cell as the primary-carrier cell
VS.HSDPA.DC.SEC.UE.Mean.Cell: average number of users that have chosen the current cell as the secondary-carrier cell
To obtain the information about the scheduling of DC-HSDPA users under a NodeB, check the values of the following NodeB counters:
VS.HSDPA.DCCfg.AnchorCarrierActedNum: number of times during a measurement period that the current cell has performed scheduling for users that are configured with DC-HSDPA and have chosen the current cell as the primary-carrier cell, regardless of whether the secondary carrier has performed scheduling simultaneously. If the primary and secondary carriers have performed scheduling for a user simultaneously, only one time is counted.
VS.HSDPA.DCCfg.SupCarrierActedNum: number of times during a measurement period that the current cell has performed scheduling for users that are configured with DC-HSDPA and have chosen the current cell as the secondary-carrier cell, regardless of whether the primary carrier has performed scheduling at the same time. If the primary and secondary carriers have performed scheduling for a user simultaneously, only one time is counted.
VS.HSDPA.DCCfg.DualCarrierActedNum: number of times during a measurement period that scheduling has been performed by the primary and secondary carriers at the same time for users that are configured with DC-HSDPA and have chosen the current cell as the primary-carrier cell
DC-HSDPA increases cell throughput and peak rates for individual users. To determine the average HSDPA throughput and total downlink throughput before and after DC-HSDPA is deployed, check the values of the following counters:
VS.HSDPA.MeanChThroughput: an RNC counter that measures the average downlink throughput of individual MAC-d flows for HSDPA in the cell. The value of this counter is an average. The peak data rate per user can only be checked in drive tests.
VS.DataOutput.Mean: a NodeB counter that measures the average throughput at the MAC-hs/MAC-ehs layer in the cell during a measurement period.
5.2 Activating or Deactivating Secondary Cell This function cuts overheads on the uplink control channels, lowers UE power consumption, and reduces the uplink load. It is recommended that this function be enabled if DC-HSDPA has been deployed. For burst services such as web browsing, this feature slightly decreases the DC-HSDPA throughput during service burst transmission. As a result, the delay increases slightly. In addition, this feature increases the usage of HS-SCCH code resources. You can check the value of the counter VS.HSDPA.DCCfg.SupCarrierDeact.TimeRatio to determine the proportion of time during which supplementary carriers remained deactivated for DC-HSDPA users and DC-HSDPA+MIMO users in a cell depending on the traffic volume.
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For a single DC-HSDPA user, this function reduces the uplink load only by a limited degree. If there are a large number of DC-HSDPA users, this function reduces the uplink load significantly. Follow these steps to calculate the uplink load gain for a cell: 1. With this function disabled, obtain the value of VS.MinRTWP when the cell is idle and the value of VS.MeanRTWP when some DC-HSDPA users are camping on the cell. Then, calculate the difference between the values of VS.MinRTWP and VS.MeanRTWP and record it as RTWPoff. 2. With this function enabled, obtain the value of VS.MinRTWP when the cell is idle and the value of VS.MeanRTWP when some DC-HSDPA users are camping on the cell. Then, calculate the difference between the values of VS.MinRTWP and VS.MeanRTWP and record it as RTWPon. 3. Calculate the difference between the values of RTWPoff and RTWPon to obtain the uplink load gain yielded by this function. The uplink load gain is easily affected by the number of DC-HSDPA users, the channel condition, and other users, and its absolute value is small. As a result, it is not easy to notice a stable uplink load gain.
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6 Parameters Table 6-1 Parameter description Parameter ID NE
MML Command
CfgSwitch
SET Meaning: Channel configuration strategy switch UCORRMALGOSWI group. TCH(Optional) 1) CFG_DL_BLIND_DETECTION_SWITCH: When
BSC6900
Description
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 HSDPA service. 5) CFG_HSDPA_MIMO_WITH_64QAM_SWITCH: 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_SWITCH : 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.
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Parameter ID NE
6 Parameters
MML Command
Description 13) CFG_PDCP_IPV6_HEAD_COMPRESS_SWITCH: 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 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_SWITCH: 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_SWITCH, CFG_HSDPA_64QAM_SWITCH, CFG_HSDPA_DC_SWITCH, CFG_HSDPA_MIMO_SWITCH,
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Parameter ID NE
6 Parameters
MML Command
Description 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, CFG_EDPCCH_BOOSTING_SWITCH, CFG_HSDPA_DCMIMO_SWITCH, CFG_FREE_USER_SWITCH, CFG_DC_MIMO_DYNAMIC_SELECT_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_SWITCH, CFG_EDPCCH_BOOSTING_SWITCH, CFG_HSDPA_DCMIMO_SWITCH, CFG_FREE_USER_SWITCH, CFG_DC_MIMO_DYNAMIC_SELECT_SWITCH Default Value: None
ChannelRetry BSC6900 HoTimerLen
SET Meaning: This parameter specifies the value of the UCOIFTIMER(Optio channel retry handover timer. nal) When handover is performed and some higher HSPA or HSPA plus technique is supported, UTRAN will trigger the reconfiguration for the higher techniques. Pingpang will happen when the reconfiguration is triggered immediately when handover succeeds, because handover procedure is frequently. In order to avoid the pingpang, this timer will start after handover procedure is performed, and the reconfiguration will not be triggered until the timer
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Parameter ID NE
MML Command
Description expires. GUI Value Range: 0~999 Actual Value Range: 0~999 Default Value: 2
CmpSwitch
BSC6900
SET Meaning: Compatibility switch group. UCORRMALGOSWI 1) TCH(Optional) CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH: When the switch is on, the IMS signaling assigned by the CN undergoes 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_SWI TCH: When the Iu QoS Negotiation function is active and the switch is on, IE RAB Asymmetry Indicator is Symmetric bidirectional, The uplink and downlink RNC negotiation rate is asymmetric, RNC select the bigger rete as Iu QoS negotiation rate. When the switch is OFF, RNC select the less rate as Iu QoS negotiation rate. 3) CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH: When the switch is on, the IUUP version can be rolled back to R99 when complete configurations are applied during inter-RAT handover. 4) CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWIT CH: When the switch is on, H2D is performed before a neighboring RNC cell whose version is earlier than R5 is added to the active set; E2D is performed before a neighboring RNC cell whose version is earlier than R6 is added to the active set. If the DRNC is of a version earlier than R5, DL services cannot be mapped on the HS-DSCH. If the DRNC is of a version earlier than R6, DL services cannot be mapped on the HS-EDCH. 5) CMP_IUR_SHO_DIVCTRL_SWITCH: When the switch is on, the diversity combination over the Iur interface is configured on the basis of that of the local RNC. When the switch is not on, the diversity combination over the Iur interface is configured on the basis of services. The flag of diversity combination over the Iur interface can be set to MUST (for BE services) or MAY (for other services). 6) CMP_UU_ADJACENT_FREQ_CM_SWITCH: when the switch is on, the RNC initiates the inter-frequency measurement without activating the compressed mode if the following two conditions are met: the UE supports the non-compressed inter-frequency measurement, the inter-frequency
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Parameter ID NE
6 Parameters
MML Command
Description neighboring cells work in a same frequency which is within 5 MHz higher or lower than the current frequency; when the switch is off, the RNC activates the compressed mode before initiating the inter-frequency measurement. 7) CMP_UU_AMR_DRD_HHO_COMPAT_SWITCH: When the switch is on, When SRB is set up on DCH, and RNC decides to setup the AMR through DRD procedure, RNC will execute blind handover to the target cell, and then setup the AMR RBs on the target cell. 8) CMP_UU_AMR_SID_MUST_CFG_SWITCH: For narrowband AMR services, when the switch is on, the SID frame is always configured; when the switch is not on, the SID frame is configured on the basis of CN assignment. 9) CMP_UU_FDPCH_COMPAT_SWITCH: When the switch is OFF, 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 is ON, 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. If that information element does not exist, UE supports F-DPCH when all the conditions meets: a) the version of UE is Release 6. b) UE supports HS-PDSCH. 10) CMP_UU_IGNORE_UE_RLC_CAP_SWITCH: When the switch is on, the RAB assignment request and the subsequent RB setup procedure proceed if the RLC AM capabilities of the UE fail to meet the minimum RLC TX/RX window buffer requirement 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_SW ITCH: When this switch is on, the cell individual offset (CIO) of the best cell is always set to 0 in the INTRA-FREQUENCY MEASUREMENT CONTROL messages. Otherwise, the CIO information of the best cell is not carried in the INTRA-FREQUENCY MEASUREMENT CONTROL messages. 12) CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWI TCH: When the switch is on, the cell synchronization information traced by the IOS need to be reported
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Parameter ID NE
6 Parameters
MML Command
Description during the RRC measurement period. 13) CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITC H: When the switch is on, the active set update is in the same procedure as the change of the serving cell. When the switch is not on, the serving cell is changed after the UE updates the active set and delivers reconfiguration of physical channels. This switch is applicable only to R6 or aboveUEs. 14) CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SW ITCH: When the switch is on, channel transition is in the same procedure as the change of the serving cell. When the switch is not on, the serving cell is changed after the UE performs channel transition and delivers reconfiguration of physical channels. 15) CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SW ITCH: By default, the switch is on. In this case, the Alternative E-bit is not configured for L2. 16) CMP_F2F_RLC_ONESIDE_REBUILD_SWITCH: When the switch is set to ON, only uplink RLC or downlink RLC can be re-established during the state transition from CELL_FACH to CELL_FACH (F2F for short). 17) CMP_D2F_RLC_ONESIDE_REBUILD_SWITCH: When the switch is set to ON, only uplink RLC or downlink RLC can be re-established during the state transition from CELL_DCH to CELL_FACH (D2F for short). 18) CMP_RAB_5_CFG_ROHC_SWITCH: When the switch is set to ON, the service with RAB ID 5 can be configured with the Robust Header Compression (ROHC) function. When the switch is set to OFF, the service with RAB ID 5 cannot be configured with the ROHC function. 19) CMP_RAB_6_CFG_ROHC_SWITCH: When the switch is set to ON, the service with RAB ID 6 can be configured with the ROHC function. When the switch is set to OFF, the service with RAB ID 6 cannot be configured with the ROHC function. 20) CMP_RAB_7_CFG_ROHC_SWITCH: When the switch is set to ON, the service with RAB ID 7 can be configured with the ROHC function. When the switch is set to OFF, the service with RAB ID 7 cannot be configured with the ROHC function. 21) CMP_RAB_8_CFG_ROHC_SWITCH: When the switch is set to ON, the service with RAB ID 8 can be configured with the ROHC function. When the switch
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Parameter ID NE
6 Parameters
MML Command
Description is set to OFF, the service with RAB ID 8 cannot be configured with the ROHC function. 22) CMP_RAB_9_CFG_ROHC_SWITCH: When the switch is set to ON, the service with RAB ID 9 can be configured with the ROHC function. When the switch is set to OFF, the service with RAB ID 9 cannot be configured with the ROHC function. 23) CMP_HSUPA_MACD_FLOW_MUL_SWITCH: When the switch is set to ON, MAC-d flow can be multiplexed without any restrictions. When the switch is set to OFF, only MAC-d flows whose scheduling priority is lower than that of the current MAC-d flow can be multiplexed. 24) CMP_SMLC_RSLT_MODE_TYPE_SWITCH: If the Client Type of a positioning request is Value Added Service or Lawful Intercept Client, the positioning result is reported by using the Ellipsoid Arc type. For other client types, the positioning result is reported by using the Ellipsoid point with uncertainty circle type. GUI Value Range: CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH, CMP_IU_QOS_ASYMMETRY_IND_COMPAT_SWI TCH, CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH, CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWIT CH, 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_SW ITCH, CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWI TCH, CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITC H, CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SW ITCH, CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SW ITCH, CMP_F2F_RLC_ONESIDE_REBUILD_SWITCH, CMP_D2F_RLC_ONESIDE_REBUILD_SWITCH, CMP_RAB_5_CFG_ROHC_SWITCH, CMP_RAB_6_CFG_ROHC_SWITCH, CMP_RAB_7_CFG_ROHC_SWITCH, CMP_RAB_8_CFG_ROHC_SWITCH, CMP_RAB_9_CFG_ROHC_SWITCH, CMP_HSUPA_MACD_FLOW_MUL_SWITCH, CMP_SMLC_RSLT_MODE_TYPE_SWITCH Actual Value Range:
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6 Parameters
Parameter ID NE
MML Command
Description CMP_IU_IMS_PROC_AS_NORMAL_PS_SWITCH, CMP_IU_QOS_ASYMMETRY_IND_COMPAT_SWI TCH, CMP_IU_SYSHOIN_CMP_IUUP_FIXTO1_SWITCH, CMP_IUR_H2D_FOR_LOWR5_NRNCCELL_SWIT CH, 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_SW ITCH, CMP_UU_IOS_CELL_SYNC_INFO_REPORT_SWI TCH, CMP_UU_SERV_CELL_CHG_WITH_ASU_SWITC H, CMP_UU_SERV_CELL_CHG_WITH_RB_MOD_SW ITCH, CMP_UU_VOIP_UP_PROC_AS_NORMAL_PS_SW ITCH, CMP_F2F_RLC_ONESIDE_REBUILD_SWITCH, CMP_D2F_RLC_ONESIDE_REBUILD_SWITCH, CMP_RAB_5_CFG_ROHC_SWITCH, CMP_RAB_6_CFG_ROHC_SWITCH, CMP_RAB_7_CFG_ROHC_SWITCH, CMP_RAB_8_CFG_ROHC_SWITCH, CMP_RAB_9_CFG_ROHC_SWITCH, CMP_HSUPA_MACD_FLOW_MUL_SWITCH, CMP_SMLC_RSLT_MODE_TYPE_SWITCH Default Value: None
DLFREQ
NodeB
ADD LOCELL MOD LOCELL SET LOCELLPRI
Meaning: Indicates the downlink frequencies of the local cell. 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: 0 Special 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: Common Frequencies Channel Number: [1162-1513] Offset: 1575 Special Frequencies Channel Number: none Offset: 0 Band4: Common Frequencies Channel Number: [1537-1738] Offset: 1805 Special Frequencies Channel Number: (1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087) Offset: 1735.1 Band5: Common Frequencies Channel Number:
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Parameter ID NE
6 Parameters
MML Command
Description [4357-4458] Offset: 0 Special Frequencies Channel Number: (1007, 1012, 1032, 1037, 1062, 1087) Offset: 670.1 Band6: Common Frequencies Channel Number: [4387-4413] Offset: 0 Special Frequencies Channel Number: (1037, 1062) Offset: 670.1 Band7: Common Frequencies Channel Number: [2237-2563] Offset: 2175 Special Frequencies Channel Number: (2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912) Offset: 2105.1 Band8: Common Frequencies Channel Number: [2937-3088] Offset: 340 Special Frequencies Channel Number: none Offset: 0 Band9: Common Frequencies Channel Number: [9237-9387] Offset: 0 Special Frequencies Channel Number: none Offset: 0. The frequency of the local cell must be the same as that of the bearing logical cell. GUI Value Range: 0~65535 Actual Value Range: 0~65535 Default Value: None
FIRSTLOCEL NodeB L
ADD DUALCELLGRP
Meaning: Indicates the ID of local cell 1 . GUI Value Range: 0~268435455 Actual Value Range: 0~268435455 Default Value: None
HspaPlusSwitc BSC6900 h
ADD Meaning: This parameter is used to select a feature UCELLALGOSWITC related to HSPA+. H(Optional) If a feature is selected, it indicates that the MOD corresponding algorithm is enabled. If a feature is not UCELLALGOSWITC selected, it indicates that the corresponding algorithm H(Optional) is disabled. Note that other factors such as license and the physical capability of NodeB restrict whether a feature can be used even if this feature is selected. The EFACH/MIMO switch determines whether the cell supports the E-FACH/MIMO feature but does not affect the establishment of the E-FACH and the MIMO cell. GUI Value Range: 64QAM(Cell 64QAM Function Switch), MIMO(Cell MIMO Function Switch), E_FACH(Cell E_FACH Function Switch), DTX_DRX(Cell DTX_DRX Function Switch), HS_SCCH_LESS_OPERATION(Cell HS_SCCH LESS OPERATION Function Switch), DL_L2ENHANCED(Cell DL L2ENHANCED Function Switch), 64QAM_MIMO(Cell 64QAM+MIMO
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Parameter ID NE
6 Parameters
MML Command
Description Function Switch), UL_16QAM(Cell UL 16QAM Function Switch), DC_HSDPA(Cell DC-HSDPA Function Switch), UL_L2ENHANCED(Cell UL L2ENHANCED Function Switch), EDPCCH_BOOSTING(Cell E-DPCCH Boosting Function Switch), DCMIMO_HSDPA(Cell DC-HSDPA Combined with MIMO Function Switch), E_DRX(Enhanced Discontinous Reception Function Switch) Actual Value Range: 64QAM, MIMO, E_FACH, DTX_DRX, HS_SCCH_LESS_OPERATION, DL_L2ENHANCED, 64QAM_MIMO, UL_16QAM, DC_HSDPA, UL_L2ENHANCED, EDPCCH_BOOSTING, DCMIMO_HSDPA, E_DRX Default Value: None
MIMO64QAMo BSC6900 rDCHSDPASw itch
SET UFRC(Optional) Meaning: This switch is used to configure the priority of MIMO_64QAM or DC-HSDPA. According to different protocols, the following situations may occur: MIMO and DC-HSDPA cannot be used together; both 64QAM and DC-HSDPA are supported, but cannot be used together. In this case, "MIMO64QAMorDCHSDPASwitch" is used to configure the priorities of the features. When the priority of MIMO is higher than that of DC-HSDPA, the priority of 64QAM is higher than that of DC-HSDPA. When the priority of DC-HSDPA is higher than that of MIMO, the priority of DC-HSDPA is higher than that of 64QAM. GUI Value Range: MIMO_64QAM, DC_HSDPA Actual Value Range: MIMO_64QAM, DC_HSDPA Default Value: DC_HSDPA
SECCELLACT NodeB DEASW
SET MACHSPARA Meaning: Indicates whether the anti-interference HSUPA scheduling function takes effect. When this parameter is set to ON, this function takes effect. When this parameter is set to OFF, this function does not take effect. GUI Value Range: ON(ON), OFF(OFF) Actual Value Range: ON, OFF Default Value: OFF(OFF)
SECONDLOC NodeB ELL
ADD DUALCELLGRP
Meaning: Indicates the ID of local cell 2 . GUI Value Range: 0~268435455 Actual Value Range: 0~268435455 Default Value: None
ServiceDiffDrd BSC6900 Switch
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ADD Meaning: Whether the service steering DRD UCELLDRD(Optiona algorithm is applied.
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6 Parameters
Parameter ID NE
MML Command
Description
l)
GUI Value Range: ON, OFF
Actual Value Range: ON, OFF MOD UCELLDRD(Optiona Default Value: OFF l) TCell
BSC6900
ADD Meaning: Difference between the System Frame UCELLSETUP(Man Number (SFN) and NodeB Frame Number (BFN) of datory) the NodeB which the cell belongs to. It is recommended that Tcell of difference cells under one ADD UCELLQUICKSETU NodeB should be unique. For detailed information of this parameter, refer to 3GPP TS 25.433. P(Mandatory) GUI Value Range: CHIP0, CHIP256, CHIP512, MOD UCELLSETUP(Optio CHIP768, CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048, CHIP2304 nal) Actual Value Range: CHIP0, CHIP256, CHIP512, CHIP768, CHIP1024, CHIP1280, CHIP1536, CHIP1792, CHIP2048, CHIP2304 Default Value: None
ULFREQ
NodeB
ADD LOCELL MOD LOCELL
Meaning: Indicates the uplink frequencies of the local cell. 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: [9612-9888] Offset: 0 Special Frequencies Channel Number: none Offset: 0 Band2: Common Frequencies Channel Number: [9262-9538] Offset: 0 Special Frequencies Channel Number: (12, 37, 62, 87, 112, 137, 162, 187, 212, 237, 262, 287) Offset: 1850.1 Band3: Common Frequencies Channel Number: [937-1288] Offset: 1525 Special Frequencies Channel Number: none Offset: 0 Band4: Common Frequencies Channel Number: [1312-1513] Offset: 1450 Special Frequencies Channel Number: (1662, 1687, 1712, 1737, 1762, 1787, 1812, 1837, 1862) Offset: 1380.1 Band5: Common Frequencies Channel Number: [4132-4233] Offset: 0 Special Frequencies Channel Number: (782, 787, 807, 812, 837, 862) Offset: 670.1 Band6: Common Frequencies Channel Number: [4162-4188] Offset: 0 Special Frequencies Channel Number: (812, 837) Offset: 670.1 Band7: Common Frequencies Channel Number: [2012-2338] Offset: 2100 Special Frequencies Channel Number: (2362, 2387, 2412, 2437, 2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687) Offset: 2030.1 Band8: Common Frequencies Channel Number: [2712-2863] Offset: 340 Special Frequencies
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Parameter ID NE
6 Parameters
MML Command
Description Channel Number: none Offset: 0 Band9: Common Frequencies Channel Number: [8762-8912] Offset: 0 Special Frequencies Channel Number: none Offset: 0. GUI Value Range: 0~65535 Actual Value Range: 0~65535 Default Value: None
ULLdbDRDLo BSC6900 adRemainThd DcHSDPA
ADD Meaning: This parameter specifies the threshold of UCELLDRD(Optiona triggering the uplink load balance for DC-HSDPA l) traffic. If the remaining number of equivalent users in the uplink is less than the value of this parameter, MOD UCELLDRD(Optiona uplink load balance for DC-HSDPA traffic is triggered. l)
GUI Value Range: 0~100 Actual Value Range: 0~100 Default Value: 25
ULLdbDRDOff BSC6900 setDcHSDPA
SET UDRD(Optional)
Meaning: If the difference of the remaining number of equivalent users in the uplink between the target cell and the serving cell is greater than the value of this parameter, the target cell meets one of the qualifications to be the candidate cell for directed retry. GUI Value Range: 0~100 Actual Value Range: 0~100 Default Value: 10
ULLdbDRDSw BSC6900 itchDcHSDPA
ADD Meaning: This parameter specifies whether to enable UCELLDRD(Optiona the uplink load balance for DC-HSDPA traffic. The l) uplink load balance is performed on the basis of the equivalent number of users. MOD UCELLDRD(Optiona GUI Value Range: ON, OFF l) Actual Value Range: ON, OFF Default Value: OFF
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7 Counters
7 Counters Table 7-1 Counter description Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
50341702 VS.HSDPA.DCCfg The Ratio Of Dc Deact .SupCarrierDeact. TimeRatio
WRFD-010713 Traffic-Based Activation and Deactivation of the DC-HSDPA Secondary Carrier
73403828 VS.HSDPA.RAB.D Number of DC-HSDPA RAB Setup C.AttEstab Requests in the primary carrier of DC-HSDPA counted for cell
WRFD-010696 DC-HSDPA
73403829 VS.HSDPA.RAB.D Number of DC-HSDPA RABs Setup C.SuccEstab Successfully in the primary carrier of DC-HSDPA counted for cell
WRFD-010696 DC-HSDPA
73403830 VS.HSDPA.RAB.A Number of DC-HSDPA RABs Abnormal bnormRel.DC Released in the primary carrier of DC counted for Cell(including RF Cause)
WRFD-010696 DC-HSDPA
73403831 VS.HSDPA.RAB.N Number of DC-HSDPA RABs Normal ormRel.DC Released in the primary carrier of DC counted for Cell
WRFD-010696 DC-HSDPA
73410508 VS.HSDPA.DC.PR Average number of DC-HSDPA UEs in IM.UE.Mean.Cell anchor carrier in a Cell
WRFD-010696 DC-HSDPA
73410509 VS.HSDPA.DC.SE Average number of DC-HSDPA UEs in C.UE.Mean.Cell supplementary carrier in a Cell
WRFD-010696 DC-HSDPA
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8 Glossary
8 Glossary For the acronyms, abbreviations, terms, and definitions, see the Glossary.
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9 Reference Documents
9 Reference Documents [1] 3GPP TS 25.331, "Radio Resource Control (RRC)" [2] 3GPP TS 25.306, "UE Radio Access capabilities" [3] HSDPA Feature Parameter Description [4] Radio Bearers Feature Parameter Description [5] Load Control Feature Parameter Description [6] Directed Retry Decision Feature Parameter Description [7] Handover Feature Parameter Description [8] Green BTS Feature Parameter Description
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