Hsdpa Calls

7/29/2019 Hsdpa Calls

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June 9, 2006 Ralf Kreher - Tektronix MPT EM-11

HSDPA Call Scenarios

Ralf Kreher, Tektronix MPT Berlin


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HSDPA Cell Setup

Node B

NBAP Cell Setup + Common Tr. Ch. Setup PCH, FACH, RACH

Node B Reset + NBAP Audit

NBAP Resource Status Indication (Local c-ID=0, HSDPA-Capability=hsdpa capable)

NBAP Shared Physical Channel Reconfiguration Request (c-ID=1, number-of-HS-PDSCH-codes

= 5, hS-PDSCH-Start-code-number=2, HS-SCCH-Codes = 6/7/8)

NBAP Shared Physical Channel Reconfiguration Response


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HSDPA Basic Call


4/21June 9, 2006 Ralf Kreher - Tektronix MPT EM-14

HSDPA Call Overview

Active PDP Context

RANAP GTP-CDPCH (DL)

DPDCH (UL)

VPI/VCI/CID 1

VPI/VCI/CID 2TEID

1

RRC

HSPDSCH

Active RRC Connection (Context)

TEID2

TEID3

TEID4IP IP

VPI/VCI/CID 7Iu Bearer Core Network Bearer

IP

Radio Bearer (IP) + SRBs (RRC)

Other UE sharingsame HSPDSCH

Radio Access Bearer



HSDPA Basic Call 1/5

RACH: RRC Connection Request (TMSI, establishment cause=originating interactive call)

NBAP Radio Link Setup Request (CRNC-CC,UL-SC=146xxxx, DCH-ID=1 and UL/DL TFS for

SRBs, RL-ID=0, c-ID=1, DL-SC=0, DL-ChCd=96)

NBAP Radio Link Setup Response (NodeB-CC, DCH-ID + bindingID)

ALCAP ERQ/ECF for DCCHs

FACH: RRC Connection Setup (TMSI, UL-SC=146xxxx, DCH-ID=1 and UL/DL TFS for SRBs, RBMapping Option for SRBs UL/DL = DCH-1 or RACH/FACH, PSC, UL-SF=256, DL-SF/Cd-No.=256/96)

1st message on DCH: RRC Connection Setup Complete (UE Radio Access Capabilities)To

SGSNGPRS SM Service Request (P-TMSI)




RRC Measurement Control (Meas.-ID=9, Setup Intra-Frequency Measurement, EventID = 1A,1B, 1C) ToSGSNGPRS SM Activate PDP Context (max. Bitrate Ul/DL=64/384 kpbs)

NBAP Synchr. Radio Link ReconfigurationPreparation Request (UL-SC=146xxxx, DCHs-to-

add: DCH-ID=20 UL TFS= 4x336, DL TFS=0,RL-ID=0, DL-SC=0, DL-ChCd=97, HSDSCH-MAC-d-

Flow-ID=0, MAC-d-PDU-Size=336, RLC-Mode=RLC-AM, HSDSCH-RNTI=4369, HSDSCH-

RL-ID=0)

NBAP Synchr. Radio Link ReconfigurationPreparation Response (DCH-ID + bindingID,

HSDSCH-MAC-d-Flow-ID + bindingID)

ALCAP ERQ/ECF for DTCH on DCH

ALCAP ERQ/ECF for MAC-d Flow




RLC Data (IP Payload) on HSDSCH-0 (Uu) / MAC-d Flow = 0 (Iub)

RLC Data (IP Payload) on DCH-20

FP HS-DSCH Capacity Allocation (Priority,Credits, Interval)

RRC Radio Bearer Setup (H-RNTI=4369, rrcStateIndicator=cell-DCH, RAB-ID=5, RB-ID=6, RB MappingOptions UL/DL = DCH-20/DCH-20 orRACH/FACH or DCH-20/HSDSCH-0, UL-SC=146xxxx, UL-SF=16, HS-

SCCH-Codes = 6/7/8, CQI-RepetitionFactor=1, deltaCQI=5, PSC, DL-SC=0, DL-SF/Cd-No.=256/97)

RRC Radio Bearer Setup Complete

RRC Measurement Control (Meas.-ID=12, Setup TrafficVolumeMeas on UL TransportChannel RACHor CPCH, EventID = 4A)

GPRS SM Activate PDP Context Accept (max. Bitrate Ul/DL=64/384 kpbs, PDP address=172.x.x.x)

RRC Measurement Control (Meas.-ID=8, Setup Intra-Frequency Meas., EventID = 1D)

FP HS-DSCH Capacity Request

fromSGSN




ALCAP REL/RLC for DTCH on DCH

ALCAP REL/RLC for MAC-d Flow

GPRS SM Deactivate PDP Context Accept

toSGSN

GPRS SM Deactivate PDP Context RequestfromSGSN

NBAP Synchr. Radio Link ReconfigurationPreparation Request (UL-SC=146xxxx, DCHs-Delete-List: DCH-ID=20, RL-ID=0, DL-SC=0, DL-

ChCd=96, HSDSCH-MAC-d-Flows-to-delete:HSDSCH-MAC-d-Flows-ID=0)

NBAP Synchr. Radio Link ReconfigurationPreparation Response (RL-ID=0)

RRC Radio Bearer Release (RB-ID=6, UL/DL-DeleteTranspChList: DCH-20, HSDSCH-0, UL-SC=146xxxx,

UL-SF=256, PSC, DL-SF/Cd-No.=256/96)

RRC Radio Bearer Release Complete




RRC Connection Release Complete

RRC Measurement Control (Meas.-ID=8, Release)

ALCAP REL/RLC for DCCH

RRC Measurement Control (Meas.-ID=12, Release)

RRC Connection Release

NBAP Radio Link Deletion Request (NodeB-CC)

NBAP Radio Link Deletion Response(CRNC-CC)


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HSDPA Mobility Definitions

f HSDPA only possible in CELL_DCH

f One or more HS-PDSCH possible all belong to same serving

HS-DSCH radio linkof UEf Cell associated with HS-DSCH radio link is called serving HS-

DSCH cell

f RRC connection mobility provided by mobile evaluatedsoft/hard handover procedures (MEHO) only shall not bebased on periodical measurement reports


11/21


HSDPA Cell ChangeWithout Change of Active Set

Based on description in 3GPP 25.308


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Intra-Node BSynchronized Serving HS-DSCH Cell Change

Overview

SRNC

Iub

NodeB

NBAP + RRC

Connection

Old Serving

HS-DSCH

Radio LinkActive

SetNew Serving

HS-DSCH

Radio Link


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Intra-Node BSynchronized Serving HS-DSCH Cell Change

NBAP Radio Link Setup (c-ID=1, RL-ID =1)

RRC Connection Setup (PSC=100)

NBAP Radio Link Addition (c-ID=2, RL-ID=2)

RRC Active Set Update (PSC=200)

RRC Radio Bearer Setup (DL-Info-per-RL: PSC=100, serving-HSDSCH-RL-indicator = TRUE )

RRC Measurement Report (event-ID = 1D change of best cell, PSC = 200)

NBAP Synchr. Radio Link Reconfiguration PreparationRequest (new H-RNTI, RL-ID=2 HSPDSCH-RL-ID=2)

NBAP Synchr. Radio Link Reconfiguration

Preparation Response

RRC Transport Channel Reconfiguration Request(DL-Info-per-RL: PSC=200, serving-HSDSCH-RL-indicator = TRUE, new H-RNTI,

MAC-HS-reset-indicator= TRUE)

RRC Transport Channel Reconfiguration Complete

d


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Inter-Node BSynchronized Serving HS-DSCH Cell Change

OverviewOld Serving HS-DSCH Radio Link

NodeB2

NodeB1

Iub 1

Iub 2

Active Set(Hard HO)

New Serving HS-DSCH Radio Link

SRNC

f1

f2

I t N d B


15/21


Inter-Node BSynchronized Serving HS-DSCH Cell Change 1/2

NEW


OLD

RRC Measurement Report (event-ID = 1D change of best cell, PSC of new best cell)

NBAP Radio Link Setup Request (CRNC-CC,UL-SC=146xxxx, DCH-ID and UL/DL TFS for

SRBs, RL-ID, c-ID, DL-SC, DL-ChCd)

NBAP Radio Link Setup Response (NodeB-CC, DCH-ID + bindingID)

NBAP Synchr. Radio Link ReconfigurationPreparation Request (UL-SC=146xxxx, DCHs-to-

add: DCH-ID=20 UL TFS= 4x336, DL TFS=0,RL-ID, DL-SC, DL-ChCd, HSDSCH-MAC-d-Flow-ID,

new H-RNTI, HSDSCH-RL)

NBAP Synchr. Radio Link ReconfigurationPreparation Response (DCH-ID + bindingID,

HSDSCH-MAC-d-Flow-ID + bindingID)

I t N d B


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Inter-Node BSynchronized Serving HS-DSCH Cell Change 2/2

NEWOLD

ALCAP ERQ/ECF for DTCH on DCH


via Iub 1: RRC Transport Channel Reconfiguration Request(PSC of new best cell, CFN activation time, new H-RNTI)

via Iub 2: RRC Transport Channel Reconfiguration Complete

NBAP Radio Link Deletion Request (NodeB-CC)

NBAP Radio Link Deletion Response (CRNC-CC)

ALCAP REL/RLC for DCCH

ALCAP REL/RLC for DTCH on DCH

ALCAP REL/RLC for MAC-d Flow


17/21


HSDPA Cell Change after Soft HO

Based on description in 3GPP 25.308

I t N d B S h i d i HS DSCH


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Inter-Node B Synchronized serving HS-DSCHCell Change after Active Set Update

NodeB2

NodeB1

RNC

IubIub

Active Set afterSoft HO

New Serving HS-DSCH Radio Link

Old Serving HS-DSCH Radio Link

PositionnPositiono

Inter Node B Synchronized serving HS DSCH


19/21


Inter-Node B Synchronized serving HS-DSCHCell Change after Active Set Update 1/3

NEW


OLD

RRC Measurement Report (event-ID = 1A CPICH entered reporting range, PSC of new cell)

NBAP Radio Link Setup Request (CRNC-CC,UL-SC=146xxxx, DCH-ID and UL/DL TFS for

SRBs, DCH-ID and UL/DL TFS for DTCH, RL-ID,c-ID, DL-SC, DL-ChCd)

NBAP Radio Link Setup Response (NodeB-CC, 2x DCH-ID + bindingID)

ALCAP ERQ/ECF for DTCH

via Iub 1: RRC Active Set Update (PSC of new cell)

via Iub 2: RRC Active Set Update Complete



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NEWOLD

NBAP Synchr. Radio Link Reconfiguration Preparation Request

NBAP Synchr. Radio Link Reconfiguration Preparation Response

NBAP Synchr. Radio Link Reconfiguration Preparation Commit

NBAP Synchr. Radio Link ReconfigurationPreparation Request (UL-SC=146xxxx, RL-ID,

DL-SC, DL-ChCd, HSDSCH-MAC-d-Flow-ID, new H-RNTI, HSDSCH-RL-ID)

NBAP Synchr. Radio Link ReconfigurationPreparation Response (HSDSCH-MAC-d-Flow-

ID + bindingID)


NBAP Synchr. Radio Link ReconfigurationPreparation Commit



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NEWOLD

via Iub 1+2: RRC Transport Channel Reconfiguration Request(PSC of new best cell, CFN activation time, new H-RNTI)

via Iub 2+2: RRC Transport Channel Reconfiguration Complete

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Hsdpa Calls