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Evaluation of broadcast scheduling algorithms for ad-hoc TDMA networks

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3 Author(s)
Dimitrios J. Vergados ; National Technical University of Athens, Heroon Polytechniou 9, Zografou, GR-157 73, Greece ; Maria-Yvonni Manolaraki ; Dimitrios D. Vergados

Ad-hoc networks rely on multihop transmission among the nodes on the same channel. Possible simultaneous transmissions may cause collisions, whenever transmitting nodes have a common destination node in their interference range. To avoid these collisions while minimizing the frame length, the NP-complete Broadcast Scheduling Problem (BSP) should be approximated. This is usually done by interpreting the BSP into a corresponding graph coloring problem. This paper proposes an algorithm that tries to approximate the BSP, using an interference vector. Additionally, the node ordering policies used for scheduling are evaluated in terms of frame length and execution time. Simulation results show that the proposed algorithm has smaller execution time than the ones using graph coloring, and decreasing degree ordering results to the best frame length.

Published in:

Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology, 2009. Wireless VITAE 2009. 1st International Conference on

Date of Conference:

17-20 May 2009