Resource Allocation Algorithm for Reliable Multicast in Ad-Hoc Networks

Abstract: Mobile ad hoc network is an autonomous system of mobile nodes characterized by wireless links. The major challenge in ad hoc networks lies in adapting multicast communication to several environments, where network resources are limited. This leads to inefficient utilization of network resources. Reliable multicast transport delivery requires a multicast message to be received by all mobile nodes in the communication group. The recovery mechanism requires feedback messages from each one of the receivers. In the tree-based recovery protocols, only a forwarding node contribute most resources and are involved in performing the multicast functionality. This leads to an uneven and inefficient utilization of network resources. Therefore, this paper presents a distributed algorithm to construct minimum multicast tree (MMT) to improve the performance of the Source Tree Reliable Multicast (STRM) protocol. MMT mechanism allow for the transmission range of a multicast to be adjusted to those nodes requested a message. This limits the effect of multicasts on neighboring nodes that not within a multicast group. STRM utilizes the MMT in distributed manner, thus reducing the packet duplication. Simulation results demonstrate the scalability of the proposed algorithm in comparison to STRM protocol. The algorithm shown to scale significantly better in terms of reducing packet duplications than the STRM protocol that based upon a constant transmission range.

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[Tariq A. Alahdal (2015); Resource Allocation Algorithm for Reliable Multicast in Ad-Hoc Networks Int. J. of Adv. Res. 3 (2). 0] (ISSN 2320-5407).

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