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NSF CAREER Proposal : Project Summary Adaptive Architectures for Multicast Service Support in Large-Scale Mobile Ad Hoc Networks : Design and Evaluation Framework

This proposal outlines a comprehensive career plan for advancement of research and education in the field of wireless mobile ad hoc networks. The research plan consists of two complementary parts. The first is to design and develop a novel architecture for scalable multicast routing in wide-area ad hoc networks, while the second part proposes new methodologies for evaluation of wireless ad hoc routing protocols. The educational plan includes developing wireless networking courses coupled with a laboratory, in addition to proposing novel methods to improve student participation in the learning process. Ad hoc networks are evolving as very interesting architectures to support pervasive mobile wireless devices. At the same time, group communication represents a very important class of applications in future networks. Multicast is the enabling technology for efficient group communication. Providing a scalable architecture for multicast services in large-scale networks has proven to be a challenge for years in the networking community. The research challenges are even greater for ad hoc networks, mainly due to the highly dynamic nature of wireless nodes and their unexpected mobility. The developed multicast service should allow group participants to join and leave at will, and should impose no restrictions on node mobility. It should also provide automatic multicast address allocation and session advertisement. Most existing work on ad hoc networks ignores such requirement. We propose to design a new scalable architecture for multicast services support in large-scale ad hoc networks, the first of its kind. Since ad hoc networks are infrastructure-less, the developed protocols must be self-configuring. Scalability and robustness should be addressed carefully with growth in the size of the network and the number of group participants. Existing approaches for multicast, usually employ flooding or cores for discovery of group participants. These approaches, however, only apply to small networks due to cost of flooding and maintenance of the core tree. Questions are often asked about which routing mechanisms to use, pro-active or re-active routing? Hierarchical or flat? It is usually the case, however, that each of these mechanisms has its strengths and weaknesses depending on network conditions. We introduce an approach to use hybrid schemes that adapt to network dynamics. But how to adapt in a meaningful way? Such adaptation should be a function of mobility and power. The proposed research program intends to fully utilize highly adaptive mechanisms in the various components of the architecture. Specifically, we design an adaptive zone-based hierarchy …