D-PRMA: A Novel MAC Mechanism Supporting Resource Reservation for Wireless Ad Hoc Networks
Li Yun①②; Long Ke-ping①; Zhao Wei-liang①; Chen Qian-bin①; Wu Shi-qi②
Special Res. Centre for Opt. Internet & Wireless Info. Networks, Chongqing Univ. of Posts & Telecomm., Chongqing 400065, China;②Nat. Defense Key Lab of Anti-interference Comm. Tech., UESTC of China, Chengdu 610054, China
Abstract：The Medium Access Control (MAC) mechanism plays a key role on supporting Quality of Service (QoS) in wireless ad hoc networks. Based on the analysis to Packet Reservation Multiple Access (PRMA), this paper gives a new MAC scheme, Distributed- PRMA (D-PRMA), which can reserve bandwidth for real-time services. D-PRMA is distributed, which is required for wireless ad hoc networks. At the same time, D-PRMA supports real-time services whose rates are different, avoids the fragment and reassembly of packets, and makes the collision duration short-lived. By simulation, the performance of D-PRMA is evaluated. The simulation results prove that D-PRMA can guarantee the bandwidth and delay of the real-time services.
2005, Vol. 27 
