1. NGN Deployment for China Mobile
Qiang Wei
The 4th CJK NGN Working Group Meeting
June 24, 2005, Beijing

2. Agenda China Mobile Communication Corporation
Softswitch deployment in China Mobile
Deployment on long-distance tandem
Deployment on 3G R4 CS domain
Deployment on IMS
China Mobile’s Proposal

3. China Mobile Communication Corporation
Mobile communication operator
The world’s largest mobile communication network
The world’s most mobile communication users
Provides:
Mobile phone services
Data services
VoIP
WLAN access ……
GPRS, WAP, MMS,

4. Softswitch Deployment in China Mobile
Step1: Long-distance tandem softswitch
Replacement to Class-4 trunking switches
Step2: 3G R4 CS domain
Replacement to Class-5 circuit-switch MSCs
Step3: IMS-based NGN
All IP
Multimedia
Access-Irrelevant
Step by step!

5. Softswitch long-distance tandem network of China Mobile
On November 27, 2004, China Mobile completed the cut-off of the Softswitch network, the ever largest one in the world;
The network is expected to carry provincial inter-network traffic across 31 provinces in China, with the total traffic equivalent to one-third of the traditional provincial network traffic.
On the eve of Spring Festival, the traffic is 3 times higher than the average traffic. In such peak traffic, the network shows outstanding performance.
The commercial application of the Softswitch long-distance tandem network of China Mobile proves the possibility of building a network with Softswitch technology.
17951: voip

6. China Mobile’s softswitch tandem network
Guangzhou
TMSC Server1
Beijing
TMSC Server2
Beijing
TMSC Server2
Guangzhou
TMSC Server2
OAM ……
Network Management
Dual-homing heartbeat
Dual-homing heartbeat
IP Bearer Network … …
TMG/SG
TMG/SG
H/LSTP
H/LSTP
Traffic
Province 1
Province 1
Signaling over TDM
SS7
SS7
Signaling over IP
Province …
Province …
H.248
Province n
Province n
BICC
OAM

7. China Mobile’s 3G R4 Architecture
BICC
H.248
MAP
CAP
ISUP
Media on IP

8. IMS-based NGN－not only for mobile users
IMS solution of Huawei is based on hierarchical network structure. It consists of the following network layers:
1) Service application layer: Provides richer IP multimedia applications;
2) Service capability layer: Covers service capability sets required for the deployment of IP multimedia services, such as IM, Presence, HSS, GUP Server, DMS, and so on;
3) Session control layer: Covers SIP session dispatch and control functions and implements charging for each session. The session control layer makes the IMS network a distributed computer network. Since SIP is adopted as session control protocol, the session control layer supports the access-irrelevant capability. A-MG CF is mainly used to access traditional terminals;
4) Access and interworking layer:
5) Unified session control layer, enriches the access layer, facilitates the integration of multiple access technologies, and provides the most complete and all-around communication solution to end users.

9. IPI (IP Interworking) A GSMA project
Service layer Interworking for IMS based IP networks
Service control
Service based charging and balancing
China Mobile is leading IPI trial in Asia
IPI trial in Europe has completed
Introduction

10. Our Proposals
Further study on IMS-based NGN, including its application scenarios and deployment strategy in different countries.
Push IMS to maturity and commercial use.
Promote inter-working test of IMS.

11. Thank You!