Congestion control multicast in wireless ad hoc networks

Authors:
Ken Tang;Mario Gerla
Affiliations:
Department of Computer Science, University of California, Los Angeles, CA 90095, USA;Department of Computer Science, University of California, Los Angeles, CA 90095, USA
Venue:
Computer Communications
Year:
2003

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Abstract

In this paper, the interaction of the Medium Access Control (MAC) and routing layer is used to address the congestion control multicast routing problem in wireless ad hoc networks. We first introduce the Broadcast Medium Window (BMW) MAC protocol, which provides robust delivery to broadcast packets at the MAC layer. In doing so, we show that although BMW is able to provide high reliability under low to medium network load, reliability dramatically degrades under high network load. We then extend the wireless On-Demand Multicast Routing Protocol (ODMRP) to facilitate congestion control in ad hoc networks using BMW to combat the poor performance under highly congested network conditions. Through simulation, we show that ODMRP with congestion control adapts well to multicast sources that are aggressive in data transmissions.