A Multicast Routing Algorithm Based on Mobile Multicast Agents in Ad-Hoc Networks

Xin WANG  Fei LI  Susumu ISHIHARA  Tadanori MIZUNO  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.8   pp.2087-2094
Publication Date: 2001/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Internet Technology)
Category: Mobile Internet
multicast routing,  mobile multicast agents,  virtual backbone,  ad hoc network,  

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In this paper we describe a multicast routing algorithm, which builds upon mobile multicast agents of an ad-hoc network. Mobile multicast agents (MMAs) form a virtual backbone of an ad-hoc network and they provide multicast tree discovery, multicast tree maintenance and datagram delivery. First, we construct a cluster-spine hierarchy structure for an ad-hoc network. Second, we propose a multicast routing algorithm, which is inspired by Ad-hoc On-Demand Distance Vector (AODV) routing protocol. The results show that the MMA multicast algorithm can simplify the multicast tree discovery, reduce control overhead of the network, and increase the total network throughput, in comparison with general AODV multicast operation. We also overcome the deficiency of CBRP multicast routing, which places much burden on cluster heads.