Join Request Knowledge Based Multicast Protocol for MANET

摘要

This study proposes join request knowledge based multicast protocol (JRKBMP) for Mobile Ad Hoc Networks (MANET). A novel source and receiver join procedure is used in the proposed scheme. Source join and receiver join messages were sent only to their cluster-head and not flooded in the entire network. On completion of the join request procedure, a full- fledged path is ready for data delivery from source to multicast receivers. Hence, control overhead is minimized and bandwidth is efficiently used. Cluster formation and cluster- head elections were based on the Weighted Cluster Algorithm. Communication between cluster-head is done through junction node. Different junction node is used in the upstream and downstream direction. Source sends the data only to its cluster-head. Source cluster-head takes care of delivering the data to the multicast receivers through other cluster-heads and junction node. Performance of the proposed scheme is compared with Protocol for Unified Multicasting through Announcement (PUMA) under static cluster-heads for varying metrics such as node mobility and data transmission rate using ns-2.32. Simulation results shows that, JRKBMP uses only a fraction of the control overhead of PUMA without much degradation in packet delivery ratio.