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DOS/SP: Distributed Opportunistic Channel Access with Smart Probing in Wireless Cooperative Networks

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IoT as a Service (IoTaaS 2019)

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Abstract

This paper investigates optimal distributed opportunistic channel access in wireless cooperative networks with multiple relays deployed. While probing all potential relay channels could result in significant overhead and spectrum efficiency affected, distributed OCA strategies with smart relays probing is studied in this research. To achieve reliable communications of high efficiency, number of probed relays and way to use have to be carefully decided in a dynamic manner. Finding that the sequential channel probing and access are coupled, an optimal distributed OCA is much challenging, and main difficult lies in how to exploit multi-source diversity, multi-relay diversity and time diversity in full manner. To tackle this problem, an analytical framework is built based on theory of optimal sequential observation planned decision. This decision-theoretic approach integrates the design of MAC layer and physical layer, enabling smart probing and cooperative transmissions under multiple relays. Based on it, an optimal DOCA/SP strategy is proposed to maximize average system throughput, and the optimality is rigorously proved. The implementation is described, and through numerical and simulation results effectiveness is validated.

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Notes

  1. 1.

    The symbol \(\vee \) represents the union of information.

  2. 2.

    When \(j=0\), the sequence \((a_1,a_2,...,a_j)\) does not exit, and is denoted as ().

  3. 3.

    The symbol \(\vee _{m=1}^n\) can be understood as the union of information.

  4. 4.

    Note that the supreme may not be attainable, while the maximum is defined as the attainable supreme.

  5. 5.

    It notes that, since \(h_s\ge 0\) always holds, the negative value is not valid. However, the analysis makes sense for checking the monotonic property and obtaining theoretic bounds for \(M_j\big (R_d\big )\).

  6. 6.

    The factor is norm of beam forming vector in the second hop.

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Author information

Authors and Affiliations

  1. Tianjin Artificial Intelligence Innovation Center (TAIIC), Tianjin, China

    Zhou Zhang, Ye Yan & Wei Sang

  2. National University of Defense Technology, Changsha, China

    Zuohong Xu

Authors
  1. Zhou Zhang
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  2. Ye Yan
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  3. Wei Sang
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  4. Zuohong Xu
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Corresponding author

Correspondence to Zhou Zhang .

Editor information

Editors and Affiliations

  1. Northwestern Polytechnical University, Xi’an, China

    Bo Li

  2. Northwest University, Xi’an, China

    Jie Zheng

  3. Chang’an University, Xi’an, China

    Yong Fang

  4. Northwestern Polytechnical University, Xi’an, China

    Mao Yang

  5. Northwestern Polytechnical University, Xi’an, China

    Zhongjiang Yan

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© 2020 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Zhang, Z., Yan, Y., Sang, W., Xu, Z. (2020). DOS/SP: Distributed Opportunistic Channel Access with Smart Probing in Wireless Cooperative Networks. In: Li, B., Zheng, J., Fang, Y., Yang, M., Yan, Z. (eds) IoT as a Service. IoTaaS 2019. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 316. Springer, Cham. https://doi.org/10.1007/978-3-030-44751-9_18

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  • DOI: https://doi.org/10.1007/978-3-030-44751-9_18

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-44750-2

  • Online ISBN: 978-3-030-44751-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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