Multi-Link Cooperative Data Forwarding Protocol Based on Fine-Grain Gradient Strategy
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    Abstract:

    Tests demonstrated that the wireless link quality of statically deployed sensor networks frequently varied in a short time span. Traditional link estimation methodology works well in the varying case of long time span, but poor in that of short time span. This paper proposes a multi-link cooperative forwarding protocol on fine-grain gradient strategy (MCFS), which can avoid the influence of quality jitters on parts of forwarding links through single-send-multiple-receive plus strategy on the synchronized random contention of ACK. A new channel model was developed on NS2 platform, which could simulate the link quality changing in a short time based on the model of two states non-homogeneous Markov chain. Through this channel model, the following conclusions would be reached: (1) MCFS protocol can adapt and work well with short time varying of link quality; (2) In reasonable configuration, MCFS was quite effective on performances in the network delivery rate and energy efficiency, compared with mono-link optimized protocol by the criteria of HOP/PRR, disjoint and braid multi-path forwarding protocols; (3) The good features of MCFS were independent of both network scale and nodes density of deployment.

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朱红松,赵磊,徐勇军,李晓维,孙利民.基于精细梯度策略的多链路协同数据转发协议.软件学报,2009,20(11):3045-3059

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History
  • Received:May 12,2008
  • Revised:December 03,2008
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