IEEE 802.11 MAC protocol enhanced by busy tones

Supeng Leng, Liren Zhang, Yifan Chen

    Research output: Contribution to journalConference articlepeer-review

    16 Citations (Scopus)


    Two novel MAC schemes are proposed to solve the hidden terminal problem and the exposed problem in ad hoc networks with large interference range. With the aid of dual busy tones, one scheme is a simple enhancement to IEEE 802.11, and the other is to exactly signify the interference range by adjusting the transmission power of busy tones. Both of the two schemes are able to prevent the collisions of data/ACK packets. The numerical results show that the two proposed schemes are able to enhance the saturation throughput of IEEE 802.11 significantly. The proposed VPDBT MAC can balance the trade off between spatial reuse and collision avoidance.

    Original languageEnglish
    Article numberWN02-4
    Pages (from-to)2969-2973
    Number of pages5
    JournalIEEE International Conference on Communications
    Publication statusPublished - Sept 12 2005
    Event2005 IEEE International Conference on Communications, ICC 2005 - Seoul, Korea, Republic of
    Duration: May 16 2005May 20 2005


    • Ad hoc network
    • Busy tone
    • IEEE 802.11
    • MAC

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering


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