Lightweight efficient and feasible IP multimedia subsystem authentication

In IP Multimedia Subsystem(IMS) of UMTS, IMS information is delivered through the general packet radio service(GPRS) transport network, before a user equipment (UE) can access the IMS service, it must performance both packet-switch domain and IMS authentication. It is inefficient that almost all involved steps in IMS authentication are duplicated. Hence, some one-pass IMS authentications were proposed to increase the efficiency of the IMS authentication. Unfortunately, these protocols have some problems which make them unfeasible. Therefore, we proposed a lightweight one-pass IMS authentication protocol to reduce signaling traffic. Through analysis, we found that it has minimal impact on the network functionality and will not influent the succeeding IMS re-authentication, which makes it more feasible.