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The novel contention window control scheme for IEEE 802.11 mac protocol

Balador, A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1109/NSWCTC.2010.167
  3. Publisher: 2010
  4. Abstract:
  5. The IEEE 802.11 medium access control (MAC) protocol defines a contention-based distribution channel access mechanism that shares the wireless medium for mobile stations. In this paper, we present a novel backoff mechanism, which divides contention window range to the different level based on the history of channel status. Instead of doubling and resetting the CW, we change the CW range by taking into account last three channel states. We test the new scheme against legacy IEEE 802.11 with NS-2 network simulator. The simulation results have shown 30.77% improvement in packet delivery ratio and 31.76% in delay and 30.81% in throughput compared to the IEEE 802.11 DCF
  6. Keywords:
  7. Mac layer ; Back-off ; Backoff mechanism ; Contention window ; Contention-based ; Distribution channel ; IEEE 802.11 ; IEEE 802.11 DCF ; IEEE 802.11 MAC ; IEEE 802.11 MAC protocols ; IEEE 802.11s ; Medium access control protocols ; Mobile station ; Network simulators ; Packet delivery ratio ; Simulation result ; Three channel ; Wireless medium ; Ad hoc networks ; Local area networks ; Mobile ad hoc networks ; Standards ; Telecommunication networks ; Telecommunication traffic ; Wireless telecommunication systems ; Medium access control
  8. Source: NSWCTC 2010 - The 2nd International Conference on Networks Security, Wireless Communications and Trusted Computing, 24 April 2010 through 25 April 2010, Wuhan ; Volume 2 , April , 2010 , Pages 134-137 ; 9780769540115 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/5480703/?section=abstract