A cooperative MAC protocol for wireless local area networks

Pei Liu, Zhifeng Tao, Shivendra Panwar

Research output: Contribution to journalConference articlepeer-review


In this paper, a novel idea of user cooperation in wireless networks has been exploited to improve the performance of the IEEE 802.11 medium access control (MAC) protocol. The new MAC protocol leverages the multi-rate capability of IEEE 802.11b and allows the mobile stations (STA) far away from the access point (AP) to transmit at a higher rate by using an intermediate station as a relay. Two specific variations of the new MAC protocol, namely CoopMAC I and CoopMAC II, are introduced in the paper. Both are able to increase the throughput of the whole network and reduce the average packet delay. Moreover, CoopMAC II also maintains backward compatibility with the legacy 802.11 protocol. The performance improvement is further evaluated by analysis and extensive simulations.

Original languageEnglish (US)
Article numberWN02-3
Pages (from-to)2962-2968
Number of pages7
JournalIEEE International Conference on Communications
StatePublished - 2005
Event2005 IEEE International Conference on Communications, ICC 2005 - Seoul, Korea, Republic of
Duration: May 16 2005May 20 2005

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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