Localized Paging Scheme in PMIPv6

In Proxy Mobile IPv6 (PMIPv6) network, proxy registrations are performed even for idle Mobile Nodes (MNs), resulting in unnecessary signaling traffic. Although there have been many IP paging techniques aimed at reducing the unnecessary location updates, they mainly focused on Mobile IP (MIP) since it has been developed before PMIPv6 was proposed. To further promote the efficiency of PMIPv6, we propose a localized paging scheme, which pages the idle MN through the Mobility Access Gateway (MAG) and the operation is transparent to the Local Mobility Anchor (LMA). In this way, the bottleneck risk at LMA can be avoided, without the huge requirements of buffer and paging singling cost. We also develop a thorough analytical model for evaluating the performance of the proposed scheme. The results demonstrate that our paging scheme can significantly reduce the signaling cost for IP paging, compared with that of a mature paging scheme managed by LMA.