Fairness and Network Capacity Utilization Ratio of MAC Mechanism in Wireless Multi-hop Ad hoc Networks
无线多跳Ad hoc网络中MAC机制的公平性与网络容量利用率

It is a key issue in wireless multi-hop Ad hoc networks to develop a Media Access Control(MAC)protocol by which the contending nodes can share the wireless channel fairly and can fully utilize the network capacity.Considering the characteristics of wireless multi-hop Ad hoc networks,such as multi-hop,networks topology changing frequently,and some nodes contending the wireless channel,this paper builds the model of wireless Ad hoc networks and defines two MAC performance parameters:fairness and network capacity utilization ratio.Moreover,this paper proposes a Fair MAC(FMAC)protocol by modifying the IEEE 802.11 DCF.The simulation results prove that FMAC can make the contending nodes share the wireless channel fairly and fully utilize the network capacity.