A new IP paging protocol for hierarchical mobile IPv6

In contrast to the advantages of Mobile IP, updating the location of an mobile node incurs high signaling cost if it moves frequently. Thus, IP paging protocols for Mobile IP (P-MIP) have been proposed to avoid unnecessary registration signaling overhead when a mobile node is idle. However, it requires additional paging cost and delays associated with message delivery when a correspondent node sends packets to the idle mobile node. These delays greatly influence the quality of service (QoS) for multimedia services. Also, P-MIP does not consider a hierarchical mobility management scheme, which can be reduce signaling cost by the significant geographic locality in user mobility pattern. Thus, we propose a novel IP paging protocol which can be used in hierarchical Mobile IPv6 architecture. In addition, our proposal can reduce signaling cost for paging and delays using the concept of the anchor-cell. The cost analysis presented in this paper shows that our proposal has superior performance when the session-to-mobility ratio value of the mobile node is low.