2nd International ICST Conference on Access Networks

Research Article

A rate-adaptive cooperative MAC protocol based on RTS/CTS scheme for MANETs

  • @INPROCEEDINGS{10.1109/ACCESSNETS.2007.4447119,
        author={Haitao Zhao and Jibo Wei and Yong Xi},
        title={A rate-adaptive cooperative MAC protocol based on RTS/CTS scheme for MANETs},
        proceedings={2nd International ICST Conference on Access Networks},
        keywords={Automatic repeat request  Channel state information  Delay  Electronic mail  Media Access Protocol  Mobile ad hoc networks  Protective relaying  Relays  Throughput  Wireless communication},
  • Haitao Zhao
    Jibo Wei
    Yong Xi
    Year: 2008
    A rate-adaptive cooperative MAC protocol based on RTS/CTS scheme for MANETs
    DOI: 10.1109/ACCESSNETS.2007.4447119
Haitao Zhao1,*, Jibo Wei1, Yong Xi1
  • 1: School of Electronic Science and Engineering, NUDT ChangSha, China
*Contact email: haitaozhao@nudt.edu.cn


In this paper we propose a novel relay-enabled MAC protocol based on IEEE 802.11 RTS/CTS scheme for MANETs. The protocol enable the middle node lies between the source and destination to decide whether to relay for them adaptively based on the current channel state information (CSI). Because the channel with better quality can transmit data with higher rate, and distance is one of the primary factors that determine wireless channel quality, the throughput will be greatly improved if there is a higher rate supporting relay between source and destination. Besides, the throughput can be farther improved due to its ability to cooperative retransmit by taking advantage of the spatial diversity. When there is a transmission error, the relay will retransmit the signal that it received during the error slot to the destination in the following slot. By processing the originally received error packet and the packet retransmitted by the relay, the destination node can recover the original packets. The proposed approach is approved to have good performance by simulation based on NS2 platform.