4/ 038 13 - EN/LZU 108 5306 Rev. C WCDMA Air Interface1

WCDMA Downlink (FDD)

BCCHBroadcast Control Ch.

PCCHPaging Control Ch.

CCCHCommon Control Ch.

DCCHDedicated Control Ch.

DTCHDedicated Traffic Ch. N

BCHBroadcast Ch.

PCHPaging Ch.

FACHForward Access Ch.

DCHDedicated Ch.

P-CCPCH(*)Primary Common Control Physical Ch.

S-CCPCHSecondary Common Control

Physical Ch.

DPDCH (one or more per UE) Dedicated Physical Data Ch.

DPCCH (one per UE)Dedicated Physical Control Ch.Pilot, TPC, TFCI bits

SSCi

Logical Channels(Layers 3+)

Transport Channels(Layer 2)

Physical Channels(Layer 1)

DownlinkRF Out

DPCH (Dedicated Physical Channel)One per UE

DSCHDownlink Shared Ch.

CTCHCommon Traffic Ch.

CPICHCommon Pilot Channel

Null Data

Data Encoding

Data Encoding

Data Encoding

Data Encoding

Data Encoding

PDSCHPhysical Downlink Shared Channel

AICH (Acquisition Indicator Channel)

PICH (Paging Indicator Channel )

Access Indication data

Paging Indication bits

AP-AICH(Access Preamble Indicator Channel )

Access Preamble Indication bits

CSICH (CPCH Status Indicator Channel )

CPCH Status Indication bits

CD/CA-ICH (Collision Detection/Channel

Assignment )

CPCH Status Indication bits

S/P

S/P

Cch

S/P

S/P

S/P

S/P

S/P

S/P

S/P

S/P

I+jQI/Q

Modulator

Q

I

Cch

Cch

Cch

Cch

Cch

Cch

Cch

Cch 256,1

Cch 256,0

GS

PSC

GP

Sync Codes(*)

* Note regarding P-CCPCH and SCH

Sync Codes are transmitted only in bits 0-255 of each timeslot;P-CCPCH transmits only during the remaining bits of each timeslot

Filter

Filter

Gain

Gain

Gain

Gain

Gain

Gain

Gain

Gain

Gain

Gain

SCH (Sync Channel)

DTCHDedicated Traffic Ch. 1

DCHDedicated Ch.

Data Encoding

MUX

MUX

CCTrCH

DCHDedicated Ch.

Data Encoding

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

Sdl,n

4/ 038 13 - EN/LZU 108 5306 Rev. C WCDMA Air Interface2

WCDMA Uplink (FDD)Logical Channels(Layers 3+)

Transport Channels(Layer 2)

Physical Channels(Layer 1)

UplinkRF Out

UEScrambling

Code

I+jQ I/QMod.

Q

I

Chc

I

Filter

Filter

CCCHCommon Control Ch.

DTCH (packet mode)Dedicated Traffic Ch.

RACHRandom Access Ch.

PRACHPhysical Random Access Ch.

DPDCH #1Dedicated Physical Data Ch.

CPCHCommon Packet Ch.

PCPCHPhysical Common Packet Ch.

Data Coding

Data Coding

DPDCH #3 (optional)Dedicated Physical Data Ch.

DPDCH #5 (optional) Dedicated Physical Data Ch.

DPDCH #2 (optional) Dedicated Physical Data Ch.

DPDCH #4 (optional) Dedicated Physical Data Ch.

DPDCH #6 (optional) Dedicated Physical Data Ch.

Q

DPCCHDedicated Physical Control Ch.

Pilot, TPC, TFCI bits

Chd

Gc

Gd

j

Chd,1 Gd

Chd,3 Gd

Chd,5 Gd

Chd,2 Gd

Chd,4 Gd

Chd,6 Gd

Chc Gd

Chc

Chd

Gc

Gd

j

RACH Control Part

PCPCH Control Part

j

DCCHDedicated Control Ch.

DTCHDedicated Traffic Ch. N

DCHDedicated Ch.

Data Encoding

DTCHDedicated Traffic Ch. 1

DCHDedicated Ch.

Data Encoding M

UX

CCTrCH

DCHDedicated Ch.

Data Encoding