IGMP proxy for multicast services in wireless mobile networks

This paper presents a new IGMP multicast support system for wireless highspeed portable Internet (HPi) networks. The Internet group management protocol (IGMP) is common standard session-layer protocol for IP multicasting on the Internet. However, the network topology and the L2 protocol of the HPi make it difficult to adopt the IGMP on HPi networks. We propose the use of an IGMP proxy for multicast services because it provides the way of joining a multicast group over IEEE 802.16e and assists the fast multicast rejoining operations during handoff. Finally, using the multicast delay model, we present numerical results showing the effect of the fast multicast rejoining method.