12 Cdmabss 1xev Do Principle

8/11/2019 12 Cdmabss 1xev Do Principle

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Huawei Confidential. All Rights Reserved

Issue 1.0

ORA000403 CDMA2000 1xEV-DO Principles

Internal Use

Course ContentsCourse Contents

Chapter 1 Introduction

Chapter 2 Abstract of Air interface

Chapter 3 Important Number

Chapter 4 Hardware Solution


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Internal Use

IS95A9.6kbps

CDMA2000 1X307.2kbps

Heavier voiceservice capacity

Longer periodof standby time

CDMA20003X

CDMA20001X EV

1X EV-DO1995

IS95B115.2kbps

1998

20002003

Development of CDMADevelopment of CDMA

Higher spectrum efficiency and network capacity

Higher packet data rate and more diversified services

CDMA20001X EV

1X EV-DV

2005

Internal Use

CDMA 1X EVCDMA 1X EV--DO NetworkingDO Networking

INTERNET

MIP HA

AAA

PDSN/FAAN/PCF

AN/PCF

Abis

SDH

BTS

BTS

BTS

BTS3601

BTS

BTS

Um

A13

A10/A11

PS

Abis

Um

A10/A11

Softsite

AT

AT

AN-AAA

A12

A12


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Internal Use

1xEVAir link

RLP

PPP

IP

TCP/UDP

Application

User

DevicePDSNBTS

BSC

Function

IP

RouterServer

IP IP

System Protocol StackSystem Protocol StackSystem Protocol Stack

Internal Use

Network StructureNetwork Structure

AT: Access TerminalHRPD terminal (MS).

AP: Access Point (BTS).

AN: Access Network and 1xEV-DO access network, providing data connection between the terminal and

the PDSN.

AN AAA: providing user authentication (HLR).

AT

Air Interface

A13A12 AN AAA

AAA

AP BSC

BSC

PCF PDSNAbis A8/A9 A10/A11

AN

AN

APAbis

Adopt Packet Switched (PS) domain as the Core Network (CN) structure,

independently of the Circuit Switched (CS) CN.

Adopt AN-AAA to support access authentication instead of HLR.

1xEV-DO handoff: 1xEV-DO does not support forward soft handoff but

adopts virtual soft handoff. The inter-system soft handoff is controlled by

terminals.

1xEV-DO and 1x adopt frequency points with a certain amount of isolation

during network establishment.


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Internal Use

A12 Interface

Refer to the interface between AN and AN-AAA, supporting the

following functions:

Implementing AN-level access authentication for the AT

Returning MN ID to authenticated terminals and supporting link

establishment of A8/A9 and A10/A11 interfaces

A13 Interface

Refer to the interface between AN and AN, supporting signaling

interchange during inter-AN handoff and exchange of AT and PDSN

messages between the source AN and the target AN.

Information from the target AN to the source AN includes: user UATI,

security layer packet and Sector ID

Information from the source AN to the target AN includes : MN ID,

configuration parameter at session layer, PDSN address and PANID

New InterfaceNew Interface

Internal Use

Performance ComparisonPerformance Comparison

Forward link : closed loop power control and fastforward power control

Reverse link : open and closed loop power control

Forward link: transmit with maximum power andthere is no power control.

Reverse link: open and closed loop power controlPower control

307.2kbps2.4576MbpsPeak forward rate

1.2288Mcps/1.25MHz1.2288Mcps/1.25MHzChip rate/carrier

Convolutional coding and Turbo codingTurbo codingEncoding code

Forward QPSK and reverse HPSKForward QPSK8-PSK and

16-QAM; reverse BPSKModulation mode

5ms20ms40ms and 80ms26.667msFrame length

Both forward and reverse links: soft handoff, softerhandoff and hard handoff

Forward link : virtual (softer) soft handoffReverse link : soft handoff, softer handoff and hard

handoffHandoff

Support both voice service and packet data serviceSupport packet data serviceService characteristics

Forward and reverse CDMAForward time division + code division; reverse code

divisionMultiple access mode

CDMA2000 1xCDMA2000 1x EV-DO


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Internal Use






Internal Use

Chapter 2 Abstract of Air interfaceChapter 2 Abstract of Air interface

2.1 Overview2.1 Overview

2.2 Forward link

2.3 Reverse link


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Internal Use

Explanation:

CDMA 1X EV DO Application Layer - Airlink packet andsignaling applications.

Stream Layer - Multiplexing of applications with differentQoS.

Session Layer - Protocol negotiation, Configuration,Session state maintenance.

Connection Layer - Airlink connection establishment andmaintenance.

Security Layer - Authentication and encryption services.

MAC Layer - Procedures for receive and transmit over thephysical layer.

Physical Layer - Channel structure, freq., power,modulation and encoding.

CDMA 1X EV DO Protocol StackCDMA 1X EV DO Protocol StackCDMA 1X EV DO Protocol Stack

Stream Layer

Application Layer

Connection Layer

Session Layer

Security Layer

MAC Layer

Physical Layer

Internal Use

Forward

CDMA 1XEV-DO RTT

ReverseReverse

PilotMediumAccessControl

Traffic Control Traffic Access

ReverseRate

Indicator

DataRate

Control

Reverse

Activity

DRC

Lock Pilot DataPilot

Medium

AccessControl Data ACK

EVDO Air InterfaceEVDO Air InterfaceEVDO Air Interface

Reverse

PowerControl


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Internal Use


2.1 Overview

2.2 Forward link2.2 Forward link

2.3 Reverse link

Internal Use

TDM of Forward ChannelTDM of Forward Channel

Data400chips

MAC64chips

MAC64chips

Data400chips

Pilot96chips

Data400chips

MAC64chips

MAC64chips

Data400chips

Pilot96chips

Half slot (1024 chips) Half slot (1024 chips)

Slot (1.667 ms length)

Frame(26.67 mslength)

MAC64chips

MAC64chips

Pilot96chips

MAC64chips

MAC64chips

Pilot96chips

Null Null Null Null

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Active Slot

Idle Slot


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Internal Use

A single user is served at any instant:

No power sharing, entire sector power allocated to one user

Data rate is dynamically adapted as a function of user SINR

Uses Rate control v/s Power Control to achieve high spectralefficiency

Access Point (BTS) always transmits at full power:

Very high peak rates for users that are in a good coveragearea

Data throughput maximized by efficient use of sector power

Time-Division MultiplexingTimeTime--Division MultiplexingDivision Multiplexing

Internal Use

Values per Physical Layer Packet Approximate Coding

Data

Rate

(kbps)

Max

Number

of Slots

Physical

layer

packet

size

(bits)

Modulation

Symbol Unit

Size (bits)

Total

Modulation

Symbols

Number of

Full

Sequence

Trans-

missions

Number of

Modulation

Symbols in

Last Partial

Trans-

mission

Actually

Code

Rate

Repetition

Factor

38.4 16 1,024 2,560 24,576 9 1,536 1/5 9.6

76.8 8 1,024 2,560 12,288 4 2,048 1/5 4.8

153.6 4 1,024 2,560 6,144 2 1,024 1/5 2.4

307.2 2 1,024 2,560 3,072 1 512 1/5 1.2

614.4 1 1,024 1,536 1,536 1 0 1/3 1

307.2 4 2,048 3,072 6,272 2 128 1/3 2.04

614.4 2 2,048 3,072 3,136 1 64 1/3 1.02

1,228.8 1 2,048 3,072 1,536 0 1,536 2/3 1

921.6 2 3,072 3,072 3,136 1 64 1/3 1.02

1,843.2 1 3,072 3,072 1,536 0 1,536 2/3 1

1,228.8 2 4,096 3,072 3,136 1 64 1/3 1.02

2,457.6 1 4,096 3,072 1,536 0 1,536 2/3 1

Traffic Channel Data RateTraffic Channel Data RateTraffic Channel Data Rate

Similar to CDMA 1X RC, EV-DO defines several rate set as shown following table.

Forward data rate is requested by AT. AT sends requirement via DRC channel.


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Internal Use


2.1 Overview

2.2 Forward link

2.3 Reverse link2.3 Reverse link

Internal Use

Reverse Physical ChannelsReverse Physical Channels

DRC

ACK

Traffic

Pilot

Access DataPilot

Pilot

Access Data

16

0w

16

8w

8

4w

4

2w

16 Slots = 26.67 ms

1.67 ms

1.67 ms

16 Slots = 26.67 ms

1/2 Slot

16 Slots = 26.67 ms

1.67 ms

RRI

Pilot

RRI

PilotPilot

RRI

PilotRRI

1 Slot = 2048 Chips256 chips for RRI 1792 chips for Pilot

1 frame 16 Slots = 26.67 ms

1.67 ms

1.67 ms

AccessProbe

16

0w


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Internal Use

Reverse LinkReverse LinkReverse Link

Pilot-Aided, coherently demodulated reverse link

Traditional IS-95 power control mechanisms

Traditional IS-95 soft handoffs

1xEV reverse link user data rate options:

9.6, 19.2, 38.4, 76.8, 153.6 kbps

Maximum allowed transmit data rate isdynamically adapted based on Sector Loadinginformation transmitted by AP (the RAB bit)

Internal Use







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Internal Use

MIN/IMSIMIN/IMSI

Mobile subscriber identity/international mobile subscriber identityFor example, 0907550001/460030907550001

Not more than 15 digits

3 digits 2 digits

IMSI

MCC MNC MSIN

NMSI

Internal Use

ESNESN

A unique Electronic Serial Number (ESN) is used to identify single

MS. An ESN includes 32 bits and has the following structure:

31......24 23......18 17......0 bit

Manufacturers number retained equipment SN

For example, FD 03 78 0A (the 10th Motorola 378 mobile phone)

The equipment serial number is allocated by a manufacturer.


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Internal Use

SID/NID/PZIDSID/NID/PZID

System Identity (SID) +Network Identity (NID) + Packet

Zone Identity (PZID)

SID includes 15 bits. NID is made up of 16 bits. PZID

includes 8 bits. SID, NID and PZID determine one PCF

area. If AT find one of this code has been changed, it

will take route update process.

Internal Use

Unicast Access Terminal Identifier (UATI)Unicast Access Terminal Identifier (UATI)

192 168 1 23

32 bit 32 bit 32 bit 32 bit

UATI 128

24 bit104 bit

UATI 104 (Subnet) UATI 24

Color Code

8 bit

UATI 32

32Random ATI (RATI)

'11'

32Unicast ATI10

32Multicast ATI (MATI)01

0Broadcast ATI (BATI)'00'

ATI

Length(bits)

ATIType DescriptionATIType


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Internal Use






Internal Use

Adopt 25G integrated servicebackbone switch (ATM/IP).

Realize centralized control anddisperse processing.

Adopt modular structure and supportsmooth capacity expansion.

Be compatible with IS95 and supportsmooth evolution to 1XEV. Realize

connection of IS95 BTS and 1X BTSsimultaneously in the system.

Be separable and support built-inPCF.

Provide external standard interfaces

Support inter-BSC soft handoff.

Adopt 25G integrated servicebackbone switch (ATM/IP).

Realize centralized control anddisperse processing.

Adopt modular structure and supportsmooth capacity expansion.

Be compatible with IS95 and supportsmooth evolution to 1XEV. Realizeconnection of IS95 BTS and 1X BTSsimultaneously in the system.

Be separable and support built-inPCF.

Provide external standard interfaces

Support inter-BSC soft handoff.

Terms:CSWS: Central Switching Subrack

CRPS: CDMA Resource and PacketSubrack

CIMS: CDMA Integrated Management

Subrack

CIPS: CDMA Integrated Processing

Subrack

CPMS: CDMA Packet Module Subrack

IBSHO: Inter-BSC Soft Handoff

1X CBTS

...

DO/1X BTS

CMSC M2000

PDSN

CIPS CPMS

CIMS

CSWS

GPS/GLONASS

DO-CIPS 1X-CIPS DO-CIPS 1X-CIPS

CDMA 1X

1xEV-DO

IS95

CDMA 1X

ABIS

A3/A7/A13

A1/A2

A8/A9

A10/A11

ABIS

AN AAA

AAA

A12

CRPS

DO CBTS

1x EV-DO

V200 BSC ArchitectureLarge CapacityV200 BSC ArchitectureV200 BSC ArchitectureLarge CapacityLarge Capacity


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Internal Use

Special Frames ofSpecial Frames of V200R001 BSCV200R001 BSC

Specifications for single DO-

CIPS frame:

DO sector carriers supported:

192

Abis interface E1 ports: 64

Maximum BTSs connected: 64

1514131211109876543210

CB

IE

CF

MR

CS

PU

CS

PU

CF

MR

CF

MR

CF

MR

CM

UX

CM

UX

CF

MR

CF

MR

CF

MR

CF

MR

CF

MR

CF

MR

CB

IE

1514131211109876543210

C

P

CU

C

P

CU

C

P

PU

C

P

PU

C

P

PU

C

P

PU

C

P

PU

C

M

UX

C

M

UX

C

B

PU

C

B

PU

C

B

PU

C

B

PU

C

B

PU

C

H

AC

C

H

AC

DO-CIPS frame

DO-CPMS frame

Specifications for single

PM frame (a maximum of

four frames) :

Connected PPPs of packet

data service:60000Adjustable connected PPPs

of packet data service : 2500

Total packet data traffic:

100Mbps

Internal Use

Typical Configuration ofTypical Configuration of V200R001 BSCV200R001 BSC

CIPS (1x)16

CIMS1

CPMS4

CRPS1

CIPS (1x EV DO)4

CSWS1

CLKM1

9320,000 Subs (0.03Erl/sub) & 400

Mbps Throughput

SubracksCabinetsCapacity


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Internal Use

Solution to WholeSolution to Whole--Network Coverage: Existing 1xNetwork Coverage: Existing 1x

NetworkNetwork

1x network

PSTN

ISDN

PLMN

GMSC/SSP

MSC/VLR/SSP

INTERNET

HLR/AC/EIR

MIP HA

AAA

PDSN/FA

BSC1/PCF/IWF

A1/A2

A1/A2

OMC

PS domain

CS domain

Abis

Um

A10/A11

1x-BTS

Abis

1x-BTS

Internal Use

11xEVxEV--DO Solution 1: Upgrading to DO NetworkDO Solution 1: Upgrading to DO Network

AN AAA: adding NEs to DO

DO-Pico: adding NEs to hot spot and indoor coverage

BTS: adding DO channel boards and transceivers, andupgrading software

BSC: adding DO processor frames

PCF: adding DO processor frames

1x and lxEV-DO networks

PSTN

ISDN

PLMN

GMSC/SSP

MSC/VLR/SSP

INTERNET

HLR/AC/EIR

MIP HA

AAA

PDSN/FA

BSC1/PCF/IWF

1x/DO-BTS

A1/A2

A1/A2

OMC

PS domain

CS domain

Abis

Um

A10/A11

AN AAA

A12

DO-Pico

Abis

1x-BTS

Abis


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Internal Use

11xEVxEV--DO Solution 2: Establishing DO NetworkDO Solution 2: Establishing DO Network

AN AAA: adding NEs to DO

BSC2/PCF and DO-BTS : adding NEs to DO

1x and lxEV-DO networks

PSTN

ISDN

PLMN

GMSC/SSP

MSC/VLR/SSP

INTERNET

HLR/AC/EIR

MIP HA

AAA

PDSN/FABSC2/PCF/IWF

BSC1/PCF/IWF

Abis

DO-BTS

A3/A7/A13

A10/A11

A1/A2

A1/A2

OMC

PS domain

CS domain

Um

A10/A11A12

AN AAA

1x BTS

Abis

1x-BTS

Abis

Internal Use

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12 Cdmabss 1xev Do Principle