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WCDMA Power and Scrambling Code Planning

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Chapter 1 Physical Layer OverviewChapter 1 Physical Layer Overview

Chapter 2 Power PlanningChapter 2 Power PlanningChapter 2 Power PlanningChapter 2 Power Planning

Chapter 3 Scrambling Code PlanningChapter 3 Scrambling Code Planning

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Radio Interface Protocol StructureDCNtGC

C-plane signaling U plane information

DCNtGC

Duplication avoidance

UuS boundary

L3

ol

ol

C plane signaling U-plane information

controlRRCco

ntr

ol

contr

o

contr

o

co

ntr

ol

PDCPPDCP L2/PDCP

Radio

Bearers

RLC L2/RLCRLC

BMC L2/BMC

Logical

Channels

RLC L2/RLCRLCRLC

RLCRLC

RLCRLC

RLC

Transport

Channels

PHY

L2/MAC

L1

MAC

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PHY L1

WCDMA Radio Interface has three kinds of channels

In terms of protocol layer, the WCDMA radio interface has three

channels: Physical channel transport channel and logical channelchannels: Physical channel, transport channel and logical channel.

Logical channel: Carrying user services directly. According to the

types of the carried services, it is divided into two types: Control

channel and service channelchannel and service channel.

Transport channel: It is the interface of radio interface layer 2 and

physical layer, and is the service provided for MAC layer by the

h i l l A di h h h i f i d iphysical layer. According to whether the information transported is

dedicated information for a user or common information for all users, it

is divided into dedicated channel and common channel.

Physical channel: It is the ultimate embodiment of all kinds of

information when they are transmitted on radio interfaces. Each kind of

channel which uses dedicated carrier frequency, code (spreading code

d bl ) d i h (I Q) b d dand scramble) and carrier phase (I or Q) can be regarded as a

dedicated channel.

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Rad

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Logical Channel

T ffi h l

Dedicated traffic channel (DTCH)

Traffic channelCommon traffic channel (CTCH)

Broadcast control channel (BCCH)

Paging control channel (PCCH)

Control channelDedicate control channel (DCCH)

Common control channel (CCCH)

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Transport Channel

Dedicated Channel (DCH)

-DCH is an uplink or downlink channelDedicated transport

channel

B d t h l (BCH)Broadcast channel (BCH)

Forward access channel (FACH)

Paging channel (PCH) Common transportPaging channel (PCH)

Random access channel (RACH)

High-speed downlink shared channel

Common transport channel

(HS-DSCH)

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Physical ChannelPhysical Channel

A physical channel is defined by a specific carrier frequency, code

(scrambling code, spreading code) and relative phase.

In UMTS system, the different code (scrambling code or spreading

d ) di ti i h th h lcode) can distinguish the channels.

Most channels consist of radio frames and time slots, and each radio

frame consists of 15 time slotsframe consists of 15 time slots.

Two types of physical channel: UL and DL

Physical Channel

Frequency, Code, Phaseq y

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Downlink Physical ChannelDownlink Physical Channel

Downlink Dedicated Physical Channel

(Downlink DPCH)

D li k C Ph i l Ch lDownlink Common Physical Channel

Common Control Physical Channel (CCPCH)

Synchronization Channel (SCH)Downlink

Physical Channely ( )

Paging Indicator Channel (PICH)

Acquisition Indicator Channel (AICH)

Physical Channel

Common Pilot Channel (CPICH)

High-Speed Packet Downlink Shared Channel (HS-PDSCH)

High-Speed Shared Control Channel (HS-SCCH)

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Uplink Physical Channelp y

Uplink Dedicated Physical Channel

Uplink Dedicated Physical Data Channel (Uplink DPDCH)

Uplink Dedicated Physical Control p yChannel (Uplink DPCCH)

High-Speed Dedicated Physical Channel (HS-DPCCH) Uplink Physical

Ch lChannel

Uplink Common Physical Channel

Physical Random Access Channel

(PRACH)

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