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Energy-Efficient Deadline-Constrained Maximum Reliability Forwarding in Lossy Networks

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4 Author(s)
Zhenhua Zou ; ACCESS Linnaeus Center, KTH-R. Inst. of Technol., Stockholm, Sweden ; Soldati, P. ; Haibo Zhang ; Johansson, M.

This paper studies the problem of optimal forwarding for reliable and energy-efficient real-time communication over multi-hop wireless lossy networks. We impose a strict per-packet latency bound and develop forwarding policies that maximize the probability that the packet is delivered within the specified deadline minus a transmission energy cost. A solution to this problem allows to characterize the set of achievable latency-reliability pairs and to trace out the Pareto frontier between achievable deadline-constrained reliability and transmission energy cost. We develop dynamic programming-based solutions under a finite-state Markov channel model. Particular instances with Bernoulli and Gilbert-Elliot loss models that admit numerically efficient solutions are discussed and our results are demonstrated on several examples.

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Wireless Communications, IEEE Transactions on  (Volume:11 ,  Issue: 10 )