The 3GPP2 Architecture. Sridhar Machiraju CS294-3, Spring 2002, University of California at Berkeley. Contents. Introduction The 3GPP2 Architecture Mobility Management in 3GPP2 Functional comparison of 3GPP and 3GPP2. Architectural comparison of 3GPP and 3GPP2 The MWIF Architecture.
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CS294-3, Spring 2002,
University of California at Berkeley
We saw that the 3GPP architecture evolved from the already-existing GPRS network. It can be viewed as IP-based multimedia enhancements to 2G networks.
However, 3GPP2 has created a new architecture (there was no existing packet packet data service) for the 2G and 3G CDMA air interfaces.
Control of Services
Traditional “Switching Point”
Packet data functions
3GPP does not allow heterogeneous access.
The HLR is likely to be used by the SGSN for authenticating data users. Thus, access and data network authentication are integrated.
3GPP2 uses mobile IP and PSDN as FA/HA .
It allows heterogeneous access.
The PDSN uses an AAA infrastructure to authenticate data users. Access and data network authentication are separate.Security and Mobility Management
Location service in the 3GPP model is tied closely to the access.
GTP is used to provide link-layer mobility.
Though the specification is yet to be published, 3GPP2 has decided to use SIP.
In the 3GPP2 model, location service is more of a database i.e., access-independent.
Link layer mobility in the 3GPP2 world is viewed as a direct extension of mobile IP.Services etc.
Network3GPP All-IP Network Architecture Model
IP Multimedia Subsystem
User Data and Signaling
41 & GSM3GPP2 All-IP Network Architecture Model
Roaming Signaling Gateway
Subscription QoS Manager
Network Capability Gateway
Trunk Signaling Gateway
Session Control Manager
Media Gateway Control
Core QoS Manager
Position Determining Entity
Media Resource Function
Mobile IP Home Agent
Legacy MS Domain Support
41 & GSM
INTERNETMWIF All-IP Network Architecture Model
Application Functional Entities
Core Network Application(s)
3rd Party Application(s)
Global Name Server
Geographic Location Manager
Service Discovery Server
AAA Functional Entities
Communications Session Manager (CSM)
Home Mobility Manager
Multimedia Resource Controller
Home IP Address Manager
Multimedia Resource Function
Media Gateway Controller
Transport Gateway Functional Entities
Access Transport Gateway
IP Address Manager