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Channels In WCDMA Introduction
2004-06-01
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Channel Hierarchical Structure
Channel Introduction
Channel In UE Procedure
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Channel Hierarchical Structure
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Channel Hierarchical Structure
Physical channel characteristics of WCDMA
Channel Hierarchical Structure
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Channel Hierarchical Structure
Channel Hierarchical Structure
Logical hannel
Transport hannel
FTP VOD
TCP UDP
Physical hannel able
For Physical Channel:
TDMA decides when to send
CDMA decides how to multiplex
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Channel Introduction
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Channel Introduction
Physical Channel Function
Channel Mapping
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Channel Introduction
Physical Channel Function
hannel Direction
Purpose
SCH Down UE synchronize the network
PCPICH Down UE gets the cell scramble code and channel reference
PCCPCH Down Send the system information
AICH Down Send the access indication
PICH Down Send the paging indication
SCCPCH Down Send paging information, UE dedicated downlink information
PRACH Up Send uplink access request and some small dedicated message
DPDCH Up/Down Send UE dedicated information
DPCCH Up/Down Send UE dedicated physical channel control information
Common Channel Dedicated Channel
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Channel Mapping
Channel Mapping
Transport Channels
DCH
RACH
BCH
FACH
PCH
Physical Channels
Dedicated Physical Data Channel (DPDCH)
Dedicated Physical Control Channel (DPCCH)
Common Pilot Channel (CPICH)
Primary Common Control Physical Channel (P-CCPCH)
Secondary Common Control Physical Channel (S-CCPCH)
Synchronization Channel (SCH)
Acquisition Indicator Channel (AICH)
Paging Indicator Channel (PICH)
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Channel In UE Procedure
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Channel In UE Procedure
Cell Selection
RRC Connection Setup
LAU and RAU
Originated Call
Terminated Call
Packet Service Request
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Channel In UE Procedure
Cell Selection
Synchronize the network (SCH)
Get cell scramble code (PCPICH)
Read system information (BCH-PCCPCH)
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Channel In UE Procedure
RRC Connection Setup
Send access preamble (PRACH)
Get access indication (AICH)
Send RRC connection request (PRACH)
Get RRC setup command (FACH-SCCPCH)
Send RRC setup complete (DCCH-DPDCH)
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Channel In UE Procedure
Originated Call
RRC connection setup
Authentication, integrity protection and
ciphering, Identity request (DCCH-DPDCH)
Alerting, connect, connect acknowledge
(DCCH-DPDCH)
RAB Assignment (DCH-DPDCH)
Voice, Video (DTCH-DPDCH)
Setup, call proceeding (DCCH-DPDCH)
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Channel In UE Procedure
Terminated Call
RRC connection setup
Authentication, integrity protection and
ciphering, Identity request (DCCH-DPDCH)
Alerting, connect, connect acknowledge
(DCCH-DPDCH)
RAB Assignment (DCH-DPDCH)
Voice, Video (DTCH-DPDCH)
Setup, call confirmed (DCCH-DPDCH)
Get paging indication (PICH)
Confirm the paging number, cause (PCH-SCCPCH)
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Channel In UE Procedure
Packet Service Request
RRC connection setup
Authentication, integrity protection and
ciphering, Identity request (DCCH-DPDCH)
PDP activation accept (DCCH-DPDCH)
RAB Assignment (DCH-DPDCH)
Packet data (DTCH-DPDCH)
PDP activation request (DCCH-DPDCH)
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Appendix 1
Cell Selection Read System Information (BCH-PCCPCH)
Evaluate cell selection criteria
Read cell-reselection information
Read common channel configuration
Read network information (access criteria,
service, etc.)
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Appendix 2
RRC Connection Setup
Send RRC Connection Request (CCCH-PRACH)
Establishment cause, signal strength, etc.
Get RRC Connection Setup Command (FACH-
SCCPCH) Channel configuration (physical, transport, logical)
Send RRC Setup Complete (DCCC-DPDCH)
UE radio access capability (physical, transport, logic channel,
RF, measurement, RAT, etc.)
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Appendix 3
Security procedure
Authentication (DCCH-DPDCH)
Authenticate the network
Authenticate the UE
Integrity Protection and Ciphering (DCCH-DPDCH) Integrity and ciphering algorithm negotiation
Identity Request (DCCH-DPDCH)
Get user identity
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Appendix 4
RAB Assignment
Establish new RB
Establish new RB, reconfigure the physical and transport
channel
Establish and reconfigure the transport channel
Reconfigure the physical channel
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