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EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM...

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E1 E1-E2 CM E2 CM TECHNICAL TECHNICAL For internal circulation of BSNL only Overview of CDMA 2000 1X & EVDO Overview of CDMA 2000 1X & EVDO
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Page 1: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

E1E1--E2 CM E2 CM TECHNICALTECHNICAL

For internal circulation of BSNL only

TECHNICALTECHNICAL

Overview of CDMA 2000 1X & EVDOOverview of CDMA 2000 1X & EVDO

Page 2: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

AGENDA

CDMA Network architecture

Introduction to Network entities

Interfaces & Protocols

Channel types & functions

For internal circulation of BSNL only

Channel types & functions

CDMA 2000 1X EVDO

1X & 1X EVDO comparison

Page 3: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

CDMA Network Architecture

MSCA AiBSCBTS Abis

MS

Um

PSTN

PSPDN

Pi

Di

EIR IWFMSC

F LE

For internal circulation of BSNL only

OMC HLR

C

AUC H

Q Q

D VLR

B

VLR

G

SC

N

SCSMESME M M M

ISDN

Di

Page 4: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Introduction to Network Entities

BSS

BSS consists of one or more BSCs and BTSs

.

For internal circulation of BSNL only

BTS is responsible for radio transmission

BSC for control and management.

Page 5: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Base Transceiver

Radio transceiving equipment of a certain cell

Radio transmission through air interface between

BTS and MS

Controlled by BSC

For internal circulation of BSNL only

Communication to BSC through the Abis interface

Page 6: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Base Station Controller

Radio network management

Radio BTS monitoring and management

Controls handoff

Carries out operation and maintenance of the BSS.

For internal circulation of BSNL only

Page 7: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Mobile Switching Subsystem

Implements the main switching functions of the

CDMA network

Manages the database for user data and mobility.

For internal circulation of BSNL only

Page 8: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Mobile Switching Center

Controls and implements voice channel connection

for MSs within its coverage area

Serving as an interface between CDMA and other

networks.

For internal circulation of BSNL only

Page 9: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Functions of MSC

Call connection

Charging

Assist radio resource management and mobility

management.

For internal circulation of BSNL only

Implements GMSC function for call route

establishment to the MS

To query the location information of each MS.

Page 10: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

MSC databases

Visitor Location Register

Home Location Register

Authentication Center

For internal circulation of BSNL only

Page 11: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Visitor Location Register

A dynamic user database

Stores user data of all MSs (visitors) within the MSC’s

management range

User ID

MS’s location area information

For internal circulation of BSNL only

User status

Services available for the user.

VLR gets and stores all necessary data from the HLR of

a mobile subscriber.

Page 12: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Home Location Register

A static database

Stores the data for mobile subscriber management

– Parameters related with the mobile subscriber

• Subscriber’s ID

• User type

For internal circulation of BSNL only

• User type

• Supplementary services

– Current location information of the subscriber for call

route establishment.

• ex: Address of MSC or VLR

Page 13: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Authentication Center

Implements MS authentication

Stores the MS authentication parameters

Generates and sends the corresponding

authentication parameters according to the requests

of MSC or VLR

For internal circulation of BSNL only

of MSC or VLR

Page 14: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Short Message Center

Responsible for receiving, storing and forwarding

short messages

Short message services include

– Point-to-point

For internal circulation of BSNL only

– Cell broadcast service.

Page 15: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Operation and Maintenance

Management Subsystem

Provides network operation and maintenance

services

Manages subscriber information

Makes network planning

Improves the efficiency and service quality of the

For internal circulation of BSNL only

Improves the efficiency and service quality of the

whole system.

Page 16: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

OMC

Includes OMC-S and OMC-R

OMC-S is responsible for the maintenance on the

MSS side

OMC-R is responsible for the maintenance on the

BSS side.

For internal circulation of BSNL only

BSS side.

Page 17: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Functions of OMC

Maintenance test

Obstacle check and handling

System status monitoring

Real time system control

Data modification

For internal circulation of BSNL only

Data modification

Performance management

Subscriber tracking

Alarm and traffic measurement.

Page 18: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Interfaces and Protocols

Air interface

Um interface

Between mobile station and BSS

A interface - Interface between BSS and MSS

Abis interface -Interface between BSC and BTS

For internal circulation of BSNL only

Abis interface -Interface between BSC and BTS

Page 19: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

MSS internal interfaces

MSC

B

HLR/AUC

BSS

D

BSC

VLR

CBTS A

For internal circulation of BSNL only

B

VLR

MSCMC

E

N

Q

Page 20: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

E interface

Interface controlling different MSCs of adjacent

areas.

Used to exchange handoff information when the MS

moves during a call

Physical link is implemented through 2.048Mbit/s

For internal circulation of BSNL only

Physical link is implemented through 2.048Mbit/s

standard digital link between MSCs.

Page 21: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

CDMA 2000 1x air interface

Forward Channels

Reverse Channels

For internal circulation of BSNL only

Page 22: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward pilot channel (F_PICH)

Base station uses this channel to transmit the pilot

signals

Guide the mobile stations to access the network.

Forward sync channel (F-SYNCH)

For internal circulation of BSNL only

Forward sync channel (F-SYNCH)

System time and frame synchronization

information are sent to MS

Page 23: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward paging channel (F-PCH)

Paging, command and traffic channel allocation

information

Forward quick paging channel (F-QPCH)

Base station quickly instruct MS about time slot to

For internal circulation of BSNL only

Base station quickly instruct MS about time slot to

receive the control message on F-PCH or F-

CCCH.

MS need not to monitor F-PCH or F-CCCH time

slot all the time, so it saves much battery.

Page 24: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward broadcast control channel (F-BCCH)

For delivering system messages.

Common assignment channel (F-CACH)

Base station instructs MS which R-CCCH to use to

send the access message

For internal circulation of BSNL only

send the access message

And from which F-CPCCH channel to receive

power control bit.

Page 25: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward common power control channel (F-CPCCH)

Base station transmits reverse power control bit

Forward common control channel (F-CCCH)

To exchange control messages

Used when MS has not set up a traffic channel

For internal circulation of BSNL only

Used when MS has not set up a traffic channel

Page 26: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward dedicated control channel (F-DCCH)

Used by base station to transmit messages when

the mobile station is in traffic channel state

Forward fundamental traffic channel (F-FCH)

Used to carry signaling, voice, low-rate packet

For internal circulation of BSNL only

Used to carry signaling, voice, low-rate packet

service, circuit data services or auxiliary service

Page 27: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels

Forward supplemental channel (F-SCH)

Used to carry high-rate packet data service on the

forward link when MS enters traffic channel state.

Forward supplemental code channel (F-SCCH)

For internal circulation of BSNL only

Used for data transfer.

Forward power control sub-channel (F-PCSCH)

Transmits persistently on the forward traffic

channel.

Used for reverse power control.

Page 28: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Reverse Channels

Reverse pilot channel (R_PICH)

Used to assist the base station to detect the data

transmitted by MS.

Reverse access channel (R-ACH)

Functions are same as the IS-95A reverse access

For internal circulation of BSNL only

Functions are same as the IS-95A reverse access

channel.

Reverse common control channel (R-CCCH)

Used by base station and MS

To exchange control messages when the mobile

station has not set up a traffic channel yet.

Page 29: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Reverse Channels

Reverse enhanced access channel (R-EACH)

MS sends control messages to base station when

it has not yet set up a traffic channel

Reverse dedicated control channel (R-DCCH)

For internal circulation of BSNL only

Reverse dedicated control channel (R-DCCH)

Used to transmit messages when the mobile

station is in traffic channel state

Page 30: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Reverse Channels

Reverse fundamental channel (R-FCH)

Used to carry signaling, voice, low-rate packet and

circuit data services, or auxiliary services on the

reverse link when the mobile station enters traffic

channel state.

For internal circulation of BSNL only

channel state.

Reverse supplemental channel (R-SCH)

Used to carry high-rate packet data service

Page 31: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Reverse Channels

Reverse supplemental code channel (R-SCCH)

Used to send user information to the base station

during a call.

Reverse power control sub-channel (R-PCSCH)

Sub-channel of reverse pilot channel

For internal circulation of BSNL only

Sub-channel of reverse pilot channel

Includes reverse main power control sub-channel

and reverse auxiliary power control sub-channel.

Used for forward power control.

Page 32: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

CDMA2000 1x EV-DO

Evolution Data Optimized or Evolution Data Only

Specification : IS-856.

1x EV-DO system structure involves a new radio

network part overlaying the 1x system.

For internal circulation of BSNL only

Highest data transmission up to 3.1 Mb/s.

Page 33: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Forward Channels features

Data rates range from 38.4 Kb/s ~ 3.1 Mb/s.

Transmit full power without any power control.

All users belonging to the same service sector share

unique data service channel in the TDMA mode.

For internal circulation of BSNL only

unique data service channel in the TDMA mode.

Page 34: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

Reverse Channels features

Data rate can reach at most 307.2 Kb/s.

Soft handoff.

Reverse channels follow Dynamic power control.

Use of Rate control enables reverse link load

For internal circulation of BSNL only

Use of Rate control enables reverse link load

adjustment.

Page 35: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

1 X vs EV DO

1x system

Provides voice services and low/medium-speed

data services

1x EV-DO system

For internal circulation of BSNL only

1x EV-DO system

Provides high-speed packet data services

1x EV-DO and 1x systems use different carriers to

transfer data.

1x EV-DO system RF equipment is compatible with

1x system.

Page 36: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

1x and 1x EV-DO Comparisons

For internal circulation of BSNL only

Page 37: EE11--E2 CM E2 CMtraining.bsnl.co.in/digital_library_source/upgradation/E1-E2/E1-E2 CM/E1-E2 CM PPT...Interfaces & Protocols Channel types & functions For internal circulation of BSNL

For internal circulation of BSNL only


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