The Research Of Quickly Handover Authentication Mechanism On WiFi-WiMAX Heterogeneous Network

In order to let a variety of wireless network users access network services at any time, any place, quickly and securely, interoperability between heterogeneous wireless networks is particularly important.Nowadays, WiFi-WiMAX network, which has excessive handover delay, may easily lead to the upper layer application software service disruptions and affect the quality of transmission. This article works as follows:1.With analyzing the existing research and solutions, this article has founded that network switch authentication methods required the user equipment to repeated full EAP authentication in existing solutions, resulting in low efficiency of network handover authentication and the waste of authentication server resources.2.Have put forward a fast authentication mechanism using the concept of pre-certification, which is after users’equipments complete the EAP for the first time, keeping the MSK what handover networks need and taking advantage of key reuse, in addition, sentting the MSK signal to the target net in advance. When network switch, directly use the WiFi access points or the MSK whom WiMAX base station has reserved to authenticate the mobile terminal, which avoids the handover network again leading to a full EAP authentication, reduce the handover authentication delay, and achieve fast authentication purposes. In this scheme, WiFi and WiMAX share an authentication server, without the participation of the user equipment and a backend authentication server, so as to improve the handover service.3.Simulate and analyze with NS2to prove that fast handover method that this article propose obtained the shortest average handover delay, improved the efficiency of network authentication, and provided better QoS for the user.