Buffer-aided relay selection with reduced packet delay in cooperative networks

Zhao Tian, Yu Gong, Gaojie Chen*, Jonathon A. Chambers

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review


    Applying data buffers at relay nodes significantly improves the outage performance in relay networks, but the performance gain is often at the price of long packet delays. In this paper, a novel relay selection scheme with significantly reduced packet delay is proposed. The outage probability and average packet delay of the proposed scheme under different channel scenarios are analyzed. Simulation results are also given to verify the analysis. The analytical and simulation results show that, compared with non-buffer-aided relay selection schemes, the proposed scheme has not only significant gain in outage performance but also similar average packet delay when the channel signal-to-noise ratio (SNR) is high enough, making it an attractive scheme in practice.

    Original languageEnglish
    Pages (from-to)2567-2575
    Number of pages9
    JournalIEEE Transactions on Vehicular Technology
    Issue number3
    Early online date30 May 2016
    Publication statusPublished - Mar 2017

    Bibliographical note

    This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/

    Funding: EPSRC (EP/K014307/2); and Ministry of Defence’s University Defence Research Collaboration in Signal Processing


    • average delay
    • buffer-aided relay
    • relay selection


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