2G 3G Inter Operability Principle

8/3/2019 2G 3G Inter Operability Principle

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Nov 30th, 2005

2G/3G

Inter-Operability


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ZXWR RNC

ZXWN MGW

ZXWN MSCS

ZXWN HLR

ZXWN GGSNZXWN SGSN

ZXWR NodeB

Internet

Java Streaming

Router

WAP Portal

DST Backbone

2G PS (SGSN/GGSN)

2G MSC

2G HLR

2G SMSC

Network Topology

DST WAPGateway

2G MMSZXWN SMSC


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SMS Inter-Operability

RNC

NodeB

MSCS

MGW

BTS

BSC

2G MSC

DST 2GSMSC

SMS GW

ZTE 3GSMSC

1. ZTE is proposing a dedicated 3G

SMSC.

2. 3G MSCS connects with 2G SMSC

and HLR through 2G MSC, 2G MSC

working as STP.

3. 3G trial user is allowed to send SMS

to another 3G trial user or DST 2G user.

4. 3G trial user is not allowed to send

SMS to any other PLMN network, both

international and domestic. ZTE 3G

SMSC will not forward the SMS to

SMS GW and will send failure notice

to 3G trial user.

5. All MO SMS of 3G users must be

through 3G SMSC, even when 3G user

is roaming in DST 2G network.

3G HLR2G HLR


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SMS Inter-Op: Configuration Needed

DST SMSC/HLR/MSC Configuration Parameter

Parameter Data

3G MSC GT 6738996000

3G HLR GT 6738994000

3G MSISDN NUM 6738990

3G MCC 528

3G MNC 09

3G SMSC GT 6738796000

DST HLR

MSC Server

MGW

RNS

DST MSC

DST SMSC

3G HLR

BSS

3G SMSC

Physical connection

Logical connection


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SMS Inter-Operability

By ZTE: By DST1) To provide engineering plan for

implementing ZTE 3G SMSC.

2) To install ZTE 3G SMSC equipment.

3) To provide ZTE SMSC HLR/MSC

configuration parameter (if change).

3) To provide DST SMSC/HLR/MSC

configuration parameter (if change).

4) To implement the connection, configure parameters such as MSC GT, HLR GT,

MCC, MNC, MSISDN NUM (if change). To finish testing and debugging.

a) test SMS between 3G user and 2G user.b) test SMS between 3G user and 3G roaming user.

c) test SMS between 2G user and 3G roaming user.

d) test SMS between 3G roaming users.

Implementation: Step by Step


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MMS Inter-Operability

UE:10.10.X.X

3G GGSN: 192.168.8.250

ZTE FW IP A:192.168.8.249Security Level=100(High)

ZTE FW IP B:172.1.1.1(suppose)Security Level=50(Middle)

DST FW IP C:172.1.1.2 (suppose)

DST FW IP D:172.2.1.1 (suppose)

WAP GW:172.2.1.2 (suppose)

MMSC:172.2.1.3(suppose)

Router:202.152.64.28

A B:DefaultB A:ZTE Configure

3G GGSN3G SGSN

Internet

RNC

ZXWR NodeB

ZTE FireWall

DST WAPGateway

DST MMSC

2G SGSN 2G GGSN

DST Firewall

ZTE Router

IP BIP

A

IP

D

IP

C

2G SMSC


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Mobile data networkMobile data network

3G GGSN

3G SGSN

WAP Gateway

MMS Flow

3G UE

2G GGSN

2G SGSN

2G SMSC

MMSC

2G MSC

1.1. WSP/HTTP POST

3G Roaming UE

Or 2G MS

1.2. WAP PUSH

1.3. WSP/HTTP

GET

1. 3G trial user is allowed to

send MMS to another 3G

trial user or DST 2G user.

2. As indicated by the red

lines, all WAP Push

messages to 2G and 3Gusers must be through 2G

SMSC.

3G MSCS

2.2. WAP PUSH

2.1. WSP/HTTP POST

2.3. WSP/HTTP GET


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The distance between ZTE Firewall and DST Firewall If distance


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MMS Inter-Operability

By ZTE: By DST1) To finish physical connection between 2G PS firewall with 3G PS firewall.

2) To provide IP address of 2G PS firewall (IP C) and ZTE firewall (IP B), and

implement the connection.

3) To provide ZTE HLR/MSC/Firewallconfiguration parameter.

3) To provide DSTSMSC/MMSC/HLR/MSC/Firewall/WAP

GW configuration parameter.

4) To implement the connection, configure parameters such as 2G SMSC GT, MMSC

IP, UE IP, SGSN IP, GGSN IP, Firewall IP, MSC GT, HLR GT. Then finish testing and

debugging. All WAP push messages are sent by 2G SMSC.a) test MMS between 3G user and 2G user.

b) test MMS between 3G user and 3G roaming user.

c) test MMS between 2G user and 3G roaming user.

d) test MMS between 3G roaming users.

Implementation: Step by Step


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ZXWR RNC

ZXWN MGW ZXWN MSCS

ZXWN HLR

ZXWR NodeBSelibajawan/20

2G MSC

2G HLR

E1 connection

between 2G and 3G

Phase I: To implement 3G->2G by PLMN selection

3G subscribers roam to 2G network by PLMN selection. The

process takes about 1~3 minutes.Phase II: To implement 3G->2G by cell re-selection

3G subscribers can roam to 2G network by 3G->2G cell re-

selection. The process takes about 15~30 seconds.

2G/3G Inter-Operability: Roaming


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Implementation: Step by Step (Phase I)

2G/3G Roaming Phase IBy ZTE By DST1 To confirm the staff that participate in the connection testing and debugging. To

confirm the schedule.

2 To confirm physical connection between ZTE and Alcatelusing the existing E1between 3G MGW and 2G SSP

3 To provide connection parameter with each other.

4) To implement the connection, finishtesting and debugging.

a) for 3G user roaming to 2Gnetwork: finish GT translation in 3G

HLR.b) for 3G roaming user receiving acall: finish call number analysis andGT translation.

4To implement the connection, finishtesting and debugging..

a) 3G IMSI analysis and GT translationin 2G MSCVLR: to implement 3G user

roaming to 2G network.b) when 3G roaming user receive acall, 2G MSC should makeconfiguration to connect the call.

c) when 3G roaming user originate acall, 2G MSC should route the call

accordingly and control the call barringto other network.


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2G/3G Roaming Phase II

By ZTE: By DST1) To confirm the edge of 3G coverage area. And to confirm the 2G cells number

which are at the edge of 3G coverage area.

2) To provide 2G cell information which

are at the edge of 3G coverage area.

3) To test 3G->2G cell re-selection (one cell).

4) To test and finish 3G->2G cell re-selection (the whole network).

Implementation: Step by Step (Phase II)

Documents

2G 3G Inter Operability Principle