TransMAN: a group communication system for MANETs

  • Authors:

  • Kulpreet Singh;Andronikos Nedos;Siobhán Clarke

  • Affiliations:

  • Distributed Systems Group, Trinity College, Dublin, Ireland;Distributed Systems Group, Trinity College, Dublin, Ireland;Distributed Systems Group, Trinity College, Dublin, Ireland

  • Venue:
  • ICDCN'06 Proceedings of the 8th international conference on Distributed Computing and Networking
  • Year:
  • 2006

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Abstract

In mobile ad-hoc networks frequent topology changes and node failures increase the difficulty of providing reliability guarantees to applications. In traditional wired networks, group communication systems have been shown to be a useful middleware abstraction for providing strong reliability guarantees. A group communication system provides all its members with a consistent membership view while providing reliable and ordered communication between them. Existing group communication systems for MANETs do not provide consistent membership views. In this paper we describe TransMAN, a group communication system for mobile ad hoc networks that provide consistent membership views and a reliable broadcast communication between members. TransMAN relies on a reliable broadcast facility and uses implicit acknowledgements to maintain a graph capturing message relationships. This graph is used to implement important group communication properties such as non-blocking membership changes and virtually synchronous communication. We describe the various protocols that constitute TransMAN and provide an evaluation of our system using a real-world implementation. Experiments show that message delivery latency and the time required for group view changes are not adversely affected by network topology.