6th International ICST Conference on Communications and Networking in China

Research Article

A New Improved MAC Scheme: RM-MAC

  • @INPROCEEDINGS{10.1109/ChinaCom.2011.6158267,
        author={wenbin zhang and xiaozong yang and shaochuan wu},
        title={A New Improved MAC Scheme: RM-MAC},
        proceedings={6th International ICST Conference on Communications and Networking in China},
        keywords={masa ieee80211 aggregation throughput average packet delay},
  • wenbin zhang
    xiaozong yang
    shaochuan wu
    Year: 2012
    A New Improved MAC Scheme: RM-MAC
    DOI: 10.1109/ChinaCom.2011.6158267
wenbin zhang1,*, xiaozong yang1, shaochuan wu1
  • 1: Harbin Institute of Technology
*Contact email: zwbgxy1973@hit.edu.cn


As a typical MAC layer salvaging scheme,MASA is applied to IEEE802.11 with constant bit rate. In Ad Hoc networks, the salvation character of this scheme improves the performance of the 802.11 MAC protocol. However, the IEEE802.11b with variable bit rate is widely used at present. Consequently, it is necessary to analyze the behavior of MASA in variable rate conditions. Based on the above idea, this paper proposes a new salvaging scheme called Relay Multi-rate MAC (RM-MAC), which is an integration of MASA and modified Receiver-Based AutoRate (RBAR). A two-dimensional markov model concerning this new scheme is established, and then simulation by NS2 is implemented. Both model analyzing and simulation results show that RM-MAC is superior to IEEE802.11 in aggregation throughput and average packet delay