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Proceedings. 2006 31st IEEE Conference on Local Computer Networks (2006)
Tampa, FL
Nov. 14, 2006 to Nov. 16, 2006
ISSN: 0742-1303
ISBN: 1-4244-0418-5
pp: 89-96
Y.K. Rana , Sch. of Comput. Sci.&Eng., New South Wales Univ., Sydney, NSW
null Bao Hua Liu , Sch. of Comput. Sci.&Eng., New South Wales Univ., Sydney, NSW
A. Nyandoro , Sch. of Comput. Sci.&Eng., New South Wales Univ., Sydney, NSW
S. Jha , Sch. of Comput. Sci.&Eng., New South Wales Univ., Sydney, NSW
ABSTRACT
Hybrid medium access control (MAC) protocols combine the strength of random and schedule based MAC schemes. From random MAC schemes, hybrid MAC protocols borrow flexibility and ease of operation while also incorporating the scalability and high capacity performance of schedule based schemes. A number of hybrid approaches exist. The most effective of those, as shown in (I. Chlamtac, 2000), can dynamically adapt to the contention level in the medium. They achieve this adaptability by combining TDMA (schedule-based) and CSMA (random-based). Whereas the combination of TDMA and CSMA enhance contentions resolution, the existing solutions do not allocate slots in proportion to the bandwidth requirements of the individual nodes. This affects the performance adversely. In this paper we propose an algorithm to optimize slot allocations during the schedule-based phase of the hybrid MAC protocol. Through simulations, we evaluate the performance of our algorithm in both single-hop and multihop networks. Our results show an improvement of up to 40% in some cases
INDEX TERMS
multihop networks, slot allocation, hybrid medium access control protocols, TDMA, CSMA, performance evaluation, single-hop
CITATION

S. Jha, A. Nyandoro, Y. Rana and n. Bao Hua Liu, "Bandwidth Aware Slot Allocation in Hybrid MAC," Proceedings. 2006 31st IEEE Conference on Local Computer Networks(LCN), Tampa, FL, 2006, pp. 89-96.
doi:10.1109/LCN.2006.322075
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