37222090 Huawei WCDMA HSDPA RRM and Parameters

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Transcript of 37222090 Huawei WCDMA HSDPA RRM and Parameters

HSDPA RRM and ParametersISSUE 1.0www.huawei.com

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Contents1. HSDPA Channel Type Mapping 2. HSDPA Code Resource Allocation 3. HSDPA Power Allocation 4. HSDPA Power Control 5. HSDPA Mobility Management 6. HSDPA Scheduling Algorithm 7. HSDPA Flow Control

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Channel MappingInteractive, Background and Streaming service could be mapped onto HS-DSCH The bit rate thresholds are used RAB with maximum bit rate higher than or equal to the threshold will be mapped onto HS-DSCH The bit rate thresholds (DL streaming threshold on HSDPA , DL BE traffic threshold on HSDPA) are OM configurable One switch (PS_STREAMING_ON_HSDPA_SWITCH) is available for operator to disable the mapping of streaming service onto HS-DSCHRB on FACH mapping RB on DCH RB on HS-DSCH

Interactive Background Streaming

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Channel Mapping ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command PS_STREAMING_ON_HSDPA_SWITCH PS_STREAMING_ON_HSDPA_SWITCH 0, 1 Not checked, checked 0 Mandatory SET CORRMALGOSWITCH

Description: When it is checked, the PS streaming service can be mapped onto HS-DSCH when the downlink max bit rate is more than or equal to DL streaming threshold on HSDPA.

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Channel Mapping ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command DL streaming threshold on HSDPA DlStrThsonHsdpa D8, D16, D32, D64, D128, D144, D256 8, 16, 32, 64, 128, 144, 256 (kbit/s) D64 Mandatory SET FRC

Description: The rate decision threshold of the DL PS streaming service to be carried on HSDSCH. When the maximum DL service rate is greater than or equal to this threshold, the service will be carried on HS-DSCH; otherwise, on DCH.

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Channel Mapping ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command DL BE traffic threshold on HSDPA DlBeTraffThsOnHsdpa D8, D16, D32, D64, D128, D144, D256, D384, D768, D1024, D1536, D2048 8, 16, 32, 64, 128, 144, 256, 384, 768, 1024, 1536, 2048 (kbit/s) D8 Mandatory SET FRC

Description: The rate decision threshold of the DL PS background or interactive service to be carried on HS-DSCH. When the maximum DL service rate is greater than or equal to this threshold, the service will be carried on HS-DSCH; otherwise, on DCH.

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Contents1. HSDPA Channel Type Mapping 2. HSDPA Code Resource Allocation 3. HSDPA Power Allocation 4. HSDPA Power Control 5. HSDPA Mobility Management 6. HSDPA Scheduling Algorithm 7. HSDPA Flow Control

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Code Resource AllocationThe codes of the HS-PDSCH physical channel can be allocated in three ways:Static HSDPA code allocation RNC-controlled dynamic allocation NodeB-controlled dynamic allocation

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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1.

The channelization codes are constant resources consisting of the following three parts:1.

channelization codes for HS-PDSCH channelization codes for Common channels and HS-SCCH channelization codes for DPCH

2.

3.

2.

The resources are reserved for the common channels and the HS-SCCH. The parameter of the codes reserved for the HS-SCCH can be configured on the RNC LMT.

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HSDPA Code Resource AllocationStatic HSDPA Code AllocationStatic HS-PDSCH code allocationSpreading factor =16 Allocate continuously

Static HS-SCCH code allocationSpreading factor =128 Allocate with common channel

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HSDPA Code Resource AllocationRNC-controlled dynamic allocationIn the RNC-controlled dynamic allocation, the RNC adjusts the reserved HSPDSCH codes according to the real-time usage status of the codes Configure the maximum and minimum numbers of codes available for HSPDSCH on the RNC LMT. The codes between the two parameters are called shared codes The RNC periodically monitors how the code resource is used and decides to extend or reduce the codes reserved for the HS-PDSCH

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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HSDPA Code Resource AllocationWhen allocating the code resource triggered by radio link setup or radio link deletion, the RNC will extend the codes reserved for the HSPDSCH if the following cases are fulfilled:If in cell's code tree there is at least one code can be reserved and this code's SF is equal to or less than the Cell SF reserved threshold, NodeB will try to increase HS-PDSCH code number Among shared codes, the code which neighbors to the reserved codes for the HS-PDSCH is idle, which can be attained by reshuffling the cell code resource

* the solid dots represent the occupied codes and the circles represent the idle codesCopyright 2006 Huawei Technologies Co., Ltd. All rights reserved. Page10

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HSDPA Code Resource AllocationReducing the Codes Reserved for HS-PDSCHWhen allocating the code resources triggered by radio link setup, the RNC will reallocate one of the shared codes reserved for HS-PDSCH to DPCH if the minimum SF among free codes is larger than the Cell SF reserved threshold. The code number of the reallocated code should be the minimum.

* the solid dots represent the occupied codes and the circles represent the idle codes

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Code Number for HS-SCCH HSSCCHCODENUM 115 115 Unit: code 4 Mandatory ADD CELLHSDPA

Description: This parameter sets the number of HS-SCCH codes available in a cell.

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Allocate Code Mode ALLOCCODEMODE Manual, Automatic. Static Allocation, RNC-Controlled Dynamic Allocation. RNC-Controlled Dynamic Allocation Mandatory ADD CELLHSDPA

Description: This parameter is used to choose the mode of allocating HS-PDSCH codes in the RNC. There are two modes: static and dynamic

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Code Number for HS-PDSCH HSPDSCHCODENUM 115 115 Unit: code 5 Mandatory ADD CELLHSDPA

Description: This parameter sets the number of HS-PDSCH codes available in a cell. This parameter is valid only when Allocate Code Mode is set to Manual

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Code Max Number for HS-PDSCH HSPDSCHMAXCODENUM 115 115 10 Mandatory ADD CELLHSDPA Unit: code

Description: This parameter sets the maximum number of HS-PDSCH codes available in a cell This parameter is valid only when Allocate Code Mode is set to Automatic

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Code Min Number for HS-PDSCH HSPDSCHMAXCODENUM 115 115 Unit: code 5 Mandatory ADD CELLHSDPA

Description: This parameter sets the maximum number of HS-PDSCH codes available in a cell This parameter is valid only when Allocate Code Mode is set to Automatic

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

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Code Allocation ParametersParameter Name Parameter ID GUI Range Physical Range & Unit Default Value Optional/Mandatory MML Command Cell SF reserv