A Network-Based Mobility Management Scheme

The current Internet was originally designed for statically located hosts and inadequate to support mobility. Most of the existing attempts at solving the mobility problems are host- based schemes (e.g., mobile IP), which need end users to participate in the mobility management. For that the behaviors of end users are out of control of network operators, it is difficult for network operators to manage their network It is necessary to develop a network-based scheme which can satisfy the needs of service providers. In this paper, we propose a candidate for the network-based mobility management scheme, called identifiers separating and mapping scheme (ISMS), and discuss its principles and details. ISMS is a network-based mobility management scheme which deploys location management and handover management in the core network It is designed to satisfy the requirements of faster handover, route optimism, location privacy and routing scalability. It can also reduce the messages overhead and traffic overhead on wireless links. Some experiments have been performed on our prototype. Results show that the average handoff delay of ISMS is on the order of milliseconds only.