A competent global mobility support scheme in NETLMM

In this paper, we present a competent mobility scheme based on Proxy Mobile IPv6 for enabling the global mobility support in the next-generation mobile networks. With the proposed mobility scheme, mobile hosts can hand off between local mobility domains with lower signaling loads than Mobile IPv6 even though the mobile hosts do not have any mobility stack. In the proposed mobility scheme, we introduce two type modes: tunneling mode and active binding update mode. The tunneling mode achieves the global mobility support by packet tunneling. On the other hand, in the active binding update mode, a local mobility agent sends binding update messages on behalf of a mobile host whenever the mobile host hands off across local mobility domains to accomplish the global mobility support. The results of performance evaluation demonstrate that the proposed active binding update mode reduces the signaling cost compared with Mobile IPv6 and the tunneling mode. However, the proposed tunneling mode also provides the lower signaling cost while the subnet crossing rate is low and the session size is small.