4. HSDPA Call Overview
Active PDP Context
Active RRC Connection (Context)
RRC
DPCH (DL) VPI/VCI/CID 1
RANAP GTP-C
DPDCH (UL) VPI/VCI/CID 2
TEID TEID TEID TEID
1 IP 2 3 IP 4
HSPDSCH VPI/VCI/CID 7
Iu Bearer Core Network Bearer
IP
Radio Bearer (IP) + SRBs (RRC)
Other UE sharing
same HSPDSCH
Radio Access Bearer
4 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
5. 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, RB
Mapping 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
GPRS SM Service Request (P-TMSI) SGSN
5 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
6. HSDPA Basic Call 2/5
RRC Measurement Control (Meas.-ID=9, Setup Intra-Frequency Measurement, EventID = 1A,
1B, 1C) To
GPRS SM Activate PDP Context (max. Bitrate Ul/DL=64/384 kpbs) SGSN
NBAP Synchr. Radio Link Reconfiguration
Preparation 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 Reconfiguration
Preparation Response (DCH-ID + bindingID,
HSDSCH-MAC-d-Flow-ID + bindingID)
ALCAP ERQ/ECF for DTCH on DCH
ALCAP ERQ/ECF for MAC-d Flow
6 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
7. HSDPA Basic Call 3/5
RRC Radio Bearer Setup (H-RNTI=4369, rrcStateIndicator=„cell-DCH“, RAB-ID=5, RB-ID=6, RB Mapping
Options 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 RACH
or CPCH, EventID = 4A)
from
GPRS SM Activate PDP Context Accept (max. Bitrate Ul/DL=64/384 kpbs, PDP address=172.x.x.x) SGSN
RRC Measurement Control (Meas.-ID=8, Setup Intra-Frequency Meas., EventID = 1D)
FP HS-DSCH Capacity Request
FP HS-DSCH Capacity Allocation (Priority,
Credits, Interval)
RLC Data (IP Payload) on DCH-20
RLC Data (IP Payload) on HSDSCH-0 (Uu) / MAC-d Flow = 0 (Iub)
7 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
8. HSDPA Basic Call 4/5
to
SGSN
GPRS SM Deactivate PDP Context Request
from
GPRS SM Deactivate PDP Context Accept SGSN
NBAP Synchr. Radio Link Reconfiguration
Preparation 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 Reconfiguration
Preparation 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
ALCAP REL/RLC for DTCH on DCH
ALCAP REL/RLC for MAC-d Flow
8 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
9. HSDPA Basic Call 5/5
RRC Measurement Control (Meas.-ID=12, Release)
RRC Measurement Control (Meas.-ID=8, Release)
RRC Connection Release
RRC Connection Release Complete
NBAP Radio Link Deletion Request (NodeB-CC)
NBAP Radio Link Deletion Response
(CRNC-CC)
ALCAP REL/RLC for DCCH
9 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
10. HSDPA Mobility Definitions
HSDPA only possible in CELL_DCH
One or more HS-PDSCH possible – all belong to same serving
HS-DSCH radio link of UE
Cell associated with HS-DSCH radio link is called serving HS-
DSCH cell
RRC connection mobility provided by mobile evaluated
soft/hard handover procedures (MEHO) only – shall not be
based on periodical measurement reports
10 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
11. HSDPA Cell Change
Without Change of Active Set
Based on description in 3GPP 25.308
11 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
12. Intra-Node B
Synchronized Serving HS-DSCH Cell Change
Overview
SRNC
NBAP + RRC
Connection
NodeB
Iub
Old Serving
HS-DSCH Active New Serving
Radio Link Set HS-DSCH
Radio Link
12 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
13. Intra-Node B
Synchronized 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 Preparation
Request (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
13 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
14. Inter-Node B
Synchronized Serving HS-DSCH Cell Change
Overview
Old Serving HS-DSCH Radio Link
SRNC
NodeB1
New Serving HS-DSCH Radio Link
Iub 1
Iub 2 NodeB2
Active Set
(Hard HO)
f1
f2
14 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
15. Inter-Node B
Synchronized Serving HS-DSCH Cell Change 1/2
OLD NEW
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)
ALCAP ERQ/ECF for DCCHs
NBAP Synchr. Radio Link Reconfiguration
Preparation 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 Reconfiguration
Preparation Response (DCH-ID + bindingID,
HSDSCH-MAC-d-Flow-ID + bindingID)
15 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
16. Inter-Node B
Synchronized Serving HS-DSCH Cell Change 2/2
OLD NEW
ALCAP ERQ/ECF for DTCH on DCH
ALCAP ERQ/ECF for MAC-d Flow
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
16 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
17. HSDPA Cell Change after Soft HO
Based on description in 3GPP 25.308
17 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
18. Inter-Node B Synchronized serving HS-DSCH
Cell Change after Active Set Update
Old Serving HS-DSCH Radio Link
RNC
NodeB1
New Serving HS-DSCH Radio Link
Iub
Iub NodeB2
Active Set after
Soft HO
Position
Position
18 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
19. Inter-Node B Synchronized serving HS-DSCH
Cell Change after Active Set Update 1/3
OLD NEW
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 DCCHs
ALCAP ERQ/ECF for DTCH
via Iub 1: RRC Active Set Update (PSC of new cell)
via Iub 2: RRC Active Set Update Complete
19 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
20. Inter-Node B Synchronized serving HS-DSCH
Cell Change after Active Set Update 2/3
OLD NEW
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 Reconfiguration
Preparation 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 Reconfiguration
Preparation Response (HSDSCH-MAC-d-Flow-
ID + bindingID)
ALCAP ERQ/ECF for MAC-d Flow
NBAP Synchr. Radio Link Reconfiguration
Preparation Commit
20 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
21. Inter-Node B Synchronized serving HS-DSCH
Cell Change after Active Set Update 3/3
OLD NEW
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
21 June 9, 2006 Ralf Kreher - Tektronix MPT EM-1
