Efficient bandwidth of multicast packets in RPR topology for supporting wireless and mobile devices

The IEEE Working Group 802.17 has recently standardized, the new ring topology network architecture, named Resilient Packet Ring (RPR), to be used mainly in metropolitan and wide area networks. This paper presents the multicast data in RPR network. The existing standard for multicast data is to striped out the packet by source node. The bandwidth is consumed from source node back to source node same as the broadcast data to all nodes on the ring. To gain the consumption of capacity and to increases the efficiency of bandwidth resource management in the RPR network or the infrastructure of the wireless stations, we propose in this paper to change from data being striped out by source to data are being striped out by the last node in multicast group. The Topology Discovery is modified to support the multicast frame and join the multicast group. We use the Enhanced Spanning Tree Algorithm [2] to discover the bridges of the expansion RPR network to map with the RPR ring ID. We will use and write C++ on OMNET++ simulation program to simulate the idea and test our system.