Exploiting Mobility/Traffic Characteristics for PMIPv6-Based Distributed Mobility Management

Abstract

The centralized mobility management protocols such as mobile IPv6 (MIPv6) and proxy mobile IPv6 (PMIPv6) may result in significant amount of data and control traffic being pushed into the central mobility anchor of core network. Moreover, the use of such a central mobility anchor may be vulnerable to a single point of failure and degrade overall system performance. Therefore, in order to overcome the limitations of centralized IPv6 mobility management protocols, signal-driven PMIPv6 (S-PMIP) [3] was proposed. However, it cannot solve the problems of the potential bottleneck at local mobility anchor (LMA) and long handover delay. Therefore, FS-PMIP, which is our previous work in [4], was proposed to alleviate the problems of S-PMIP. By exploiting a user’s movement locality, FS-PMIP effectively reduces both the access to LMA and the handover latency. However, even if FS-PMIP is an efficient PMIPv6-based distributed mobility management scheme, it still requires the access to LMA whenever the correspondent node (CN) sends the data packets to the mobile node (MN). Therefore, in this paper, we propose an Enhanced FS-PMIP (EFS-PMIP) to enhance FS-PMIP by exploiting a user’s traffic locality as well as movement locality, which adopt both the pointer-forwarding concept and the working set concept in communications. The proposed EFS-PMIP is expected to have apparent potential to effectively reduce the access to LMA and distribute the binding and routing functionalities at mobile access gateways (MAGs).