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Towards Energy-Efficiency in Selfish, Cooperative Networks

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Abstract

Cooperative communication has been proven effective in enhancing the performance of wireless networks, anda variety of techniques have been investigated to exploit the spatial diversity gain to provide reliable physical layer communications with multiple quality-of-service (QoS) requirements. In this paper, we propose an adaptive multi-relay selection with power allocation mechanism to offer energy fairness at each node for a cooperative network. Unlike traditional approaches where all nodes are considered to transmit in a collaborative manner, weexplicitly consider the situation where nodes exhibit some degree of selfish behavior. Specifically, we introduce anovel concept of the selfishness index and incorporate it into a utility function which denotes the degree a node can benefit from cooperative transmission. Theoretical analysis and extensive simulation results are supplemented toshow advantages in maximizing the network lifetime and guaranteeing the QoS in realistic wireless environments. We also consider the practical situation when nodes consume energy in mode switching, and carefully study the behavior of inter-cluster relay switching and the trade-off among network lifetime, switching cost and switching frequency.

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Notes

  1. The path loss exponent \(\alpha \) is experimentally determined, and is typically in the range of 2 to 5 depending on propagation environment. For example, \(\alpha =2.0\) is for free space, \(2.5\sim 3.0\) for rural areas, \(3.0\sim 4.0\) for urban areas, and \(4.0\sim 5.0\) for dense urban areas.

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Author information

Authors and Affiliations

  1. IBM Research, Beijing, China

    Chi Harold Liu

  2. Beijing Institute of Technology, Beijing, China

    Jun Fan & Xiumei Fan

  3. France Telecom Orange Labs, Beijing, China

    Zhengguo Sheng

  4. Imperial College, London, UK

    Kin K. Leung

Authors
  1. Chi Harold Liu
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  2. Jun Fan
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  3. Zhengguo Sheng
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  4. Xiumei Fan
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  5. Kin K. Leung
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Corresponding author

Correspondence to Chi Harold Liu.

Additional information

This work was funded by Key Science and Technologies Program of Shanxi Province, China (No. 20120321024-04). It was also partly supported by Natural Science Foundation of China (No. 61272509), the Projects of Major International (Regional) Joint Research Program NSFC (No. 61120106010), and Beijing Natural Science Foundation (No. 4132049).

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Liu, C.H., Fan, J., Sheng, Z. et al. Towards Energy-Efficiency in Selfish, Cooperative Networks. Mobile Netw Appl 18, 535–552 (2013). https://doi.org/10.1007/s11036-012-0431-x

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  • DOI: https://doi.org/10.1007/s11036-012-0431-x

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