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HIPC
2009
Springer

Improved opportunistic scheduling algorithms for WiMAX Mobile Multihop Relay networks

8 years 3 months ago
Improved opportunistic scheduling algorithms for WiMAX Mobile Multihop Relay networks
We investigate the problem of scheduling in OFDMbased multihop relay networks with special emphasis on IEEE 802.16j based WiMAX networks. In such networks, scheduling is the problem of determining the user to be serviced at a given instant of time on a given sub-channel, while possibly exploiting multiuser and frequency diversities opportunistically in optimizing the desired objectives. In [1], the authors propose a heuristic opportunistic scheduling algorithm, GenArgMax, for such networks. In this paper, we study the drawbacks in algorithm GenArgMax. We present new opportunistic MAC scheduling algorithms that remedy these drawbacks. We compare performance of the proposed algorithms using detailed discrete event simulation based studies. Results show that the proposed algorithms improve the system throughput by over 40%, for 40-user 3-hop networks. Keywords -- IEEE 802.16j, WiMAX, Scheduling, Quality of Service, Mobile Multihop Relay, MMR.
Srinath Narasimha, Krishna M. Sivalingam
Added 18 Feb 2011
Updated 18 Feb 2011
Type Journal
Year 2009
Where HIPC
Authors Srinath Narasimha, Krishna M. Sivalingam
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