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Past queue length based low-overhead link scheduling in multi-beam wireless mesh networks

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2 Author(s)
Chattopadhyay, A. ; Dept. of ECE, Indian Inst. of Sci., Bangalore, India ; Chockalingam, A.

Wireless mesh networks with multi-beam capability at each node through the use of multi-antenna beamforming are becoming practical and attracting increased research attention. Increased capacity due to spatial reuse and increased transmission range are potential benefits in using multiple directional beams in each node. In this paper, we are interested in low-complexity scheduling algorithms in such multi-beam wireless networks. In particular, we present a scheduling algorithm based on queue length information of the past slots in multi-beam networks, and prove its stability. We present a distributed implementation of this proposed algorithm. Numerical results show that significant improvement in delay performance is achieved using the proposed multi-beam scheduling compared to omni-beam scheduling. In addition, the proposed algorithm is shown to achieve a significant reduction in the signaling overhead compared to a current slot queue length approach.

Published in:

Signal Processing and Communications (SPCOM), 2010 International Conference on

Date of Conference:

18-21 July 2010