1. EA C451
Vishal Gupta

2. Agenda: Few 3G-WLAN Internetworking Architectures

3. Hybrid Coupling with Radio Access system

4. NOTE:
You are required to understand the following architectures and analyze is, logically. Try to answer the open questions given at the end.
You are not required to remember these architectures. These are proposed by individual researchers. Of course, from examination point of view (of EA C451), you can be given any new architecture to analyze it.
The idea is to show you that how you can explore further in this field and take up research further.

8. Questions
How to map the ID’s information into IP address. Is it possible??
Source station always knows the destination IP address. Is it possible ??
If node becomes mobile, the serving Base station/wlan/RNC changes. Since this information is correctly required in the IP address, how mobility is achieved ??
Which network entity is responsible to populate the various databases ??
Can similar architecture function for tight coupling also ??
Who is responsible for AAA services ??

9. Integration of 802.11 and Third-Generation Wireless Data Networks

11. Gateway Design

12. Security/Accounting subsystem
Radius Server
Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service.
it is often used by ISPs and enterprises to manage access to the Internet or internal networks, wireless networks, and integrated services.
RADIUS is a client/server protocol that runs in the application layer, using UDP as transport.
RADIUS serves three functions:
to authenticate users or devices before granting them access to a network
to authorize those users or devices for certain network services
to account for usage of those services.

13. Mobile IP agent Dynamic Firewall QoS module Accounting module
Implements mobile IP agent functionality.
Supports role of both home agent and foreign agent.
Dynamic Firewall
It is used to install complex sets of packet filtering rules that depend on per user policy.
QoS module
Accounting module
Integrated web cache

14. Improved Mobility Management Scheme

15. Intra Domain Mobility Management Protocol
Fig: Network Architecture

17. Fig: Signaling flow during interdomain movement

18. Improved Version of previous one