An Optimization Method to Develop AAA Architectures with MIPv6 Mobility Support

With the development of mobile network and computer technology, MIPv6 is brought to the internet. Taking care of the security concerns about network connection, we bring AAA system into the mobile network. In order to be permitted in the integrated architecture of MIPv6 and AAA systems, the users have to get network access permission and AAA response from AAAH. This paper presents an optimization method to enhance handover performance. Above all, we build up a hierarchical AAA architecture and temporarily store AAA credentials at the AAASL. So that mobile user does not have the need to send request to AAAH. Then we encapsulate BU or HoT1 into authentication/authorization request information and save time needed for the BU to travel from MN to HA. Also an improved efficient security association is considered to solve the network access problem. Finally, Experiments indicate that compared with current MIPv6, this optimization method could shorten handover time, especially when the distance between MN and AAAS is long.