Relay-Based Network Mobility Support in Proxy Mobile IPv6 Networks

Network-based mobility management has advantages in easy implementation and deployment, and thus the Internet Engineering Task Force (IETF) is standardizing proxy mobile IPv6 (PMIPv6) for network-based mobility management. In this paper, we propose a practical network mobility (NEMO) solution in PMIPv6 networks, called relay-based NEMO (rNEMO). In rNEMO, a simple amplify-and-forward (AF) or decoding-and-forward (DF) relay station is employed for supporting network mobility; no complicated mobile routers are further needed. We describe the binding update and packet delivery procedures in rNEMO, and we then evaluate it against the NEMO basic support protocol in terms of deployment, processing latency, and security.