摘要
针对现有的多信道功率控制MAC协议(如DCA-PC)存在着控制信道利用率低和节点间采用大功率的通信对小功率通信干扰严重的缺点,提出了一种改进方案——DDCA-PC.DDCA-PC允许采用较低的功率发送控制帧,同时将大功率的通信限定在特定信道上.仿真实验表明,与DCA-PC相比,采用该协议可以在有效提高网络吞吐量的同时,降低能量的消耗.
Existing multi-channel transmission power control MAC protocols for mobile Ad hoc networks （MANETs）, e. g. DCA PC, suffer from low utilization of control channels and interference of communications using large power with those using lower ones. To solve this problem, DDCA-PC, an enhanced protocol, was proposed, which allows control frames to be transmitted at a low power level and constrains some communications to specific channels. Simulation results indicate that compared to the DCA PC protocol, DDCA-PC achieves a significant increase in the network throughput, and decreases energy consumption.
基金
国家自然科学基金重大项目(60496314)资助
