Mobile and Wireless Communications Networks: IFIP TC6 / WG6.8 Conference on Mobile and Wireless Communication Networks

Mobile and Wireless Communications Networks: IFIP TC6 / WG6.8 Conference on Mobile and Wireless Communication Networks, 9780387231488 (038723148X), Springer, 2004

This book draws together papers presented at the IFIP/IEEE Sixth Conference on Mobile and Wireless Communications. It focuses on the convergence of mobile wireless networks and the Internet, in particular, integrating stand-alone mobile networks with infrastructure wireless networks to create more robust and accommodating wireless networks.

In this paper, our objective is to study and understand the mutual effects between the group communication protocols and unicast sessions in mobile ad hoc networks. The motivation of this work is based on the fact that a realistic wireless networks would typically have to support different simultaneous network applications, many of which may be unicast but some of which may need broadcast or multicast. However, almost all of the prior work on evaluating protocols in ad hoc networks examine protocols in isolation. In this paper, we compare the interactions of broadcast/multicast and unicast protocols and understand the microscopic nature of the interactions. We find that unicast sessions are significantly affected by the group communication sessions. In contrast, unicast sessions have less influence on the performance of group communications due to redundant packet transmissions provided by the latter. We believe that our study is a first step towards understanding such protocol interactions in ad hoc networks.

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