An Investigation of Distance-Based Proxy Mobile Client Selection Schemes for NetLMM

One of recent efforts for mobile computing in IETF is a network-based localized mobility management (NetLMM) approach. In the NetLMM approach Proxy Mobile IPv6 (PMIPv6) is one of proposed solutions to support a localized mobility management for a mobile node (MN). In PMIPv6, a PMIP client is a main entity responsible for sending messages on behalf of an MN whenever the MN hands off across access points (APs) within a local mobility domain (LMD). As multiple PMIP clients are configured in the LMD for redundancy and load balance concerns, a selection of PMIP client has to be carefully considered on the overall network performance. Thus, in this paper, we propose two distance-based PMIP client selection schemes - the nearest PMIP client selection scheme and the furthest PMIP client selection scheme. The proposed distance-based selection schemes, where an MN is registered via the nearest or the furthest PMIP client, announce the distance information of PMIP client, so that the PMIP selection is achieved by considering the distance between the PMIP client and the current attachment.