I-D ACTION:draft-mun-mipshop-emipv6-aaa-02.txt

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	Title		: An Enhanced Mobile IPv6 Handover for Roaming between Administrative Domains Based on AAA
	Author(s)	: Y. Mun, et al.
	Filename	: draft-mun-mipshop-emipv6-aaa-02.txt
	Pages		: 14
	Date		: 2007-11-1
	
When Mobile IPv6 (MIPv6) is deployed in commercial network, a mobile
   node needs AAA services for authentication, authorization and
   accounting. MIPv6, however, does not provide any mean to authenticate
   mobile nodes that are roaming in different domains, although visited
   networks will need to check whether access of mobile nodes should be
   authorized or not. Hence schemes which support both AAA services and
   mobility have been emerged. These schemes enable access of the mobile
   node to be authorized by visited networks through AAA as well as to
   perform a home registration during AAA procedure. However, they
   introduce lots of signal messages and long handover latency during
   handover, since Route Optimization mode for MIPv6 is performed using
   Return Routability procedure. Especially, the long handover latency
   is a critical problem in real-time communication such as voice over
   IP (VoIP). To solve these problems, we propose an optimized scheme
   which performs Route Optimization mode using the AAA infrastructure
   between the home agent and a correspondent node instead of Return
   Routability procedure.

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