【摘要】 休眠管理作为自组网中节省能量的一种有效方法,正在被广泛的关注。休眠管理通过关闭节点射频,减少空闲状态能量消耗,有效延长了网络生存时间,提高了网络吞吐量;但是常常带来端到端延时增加和递交成功率降低等问题。针对这些问题,提出一种休眠管理算法TSM,各节点根据历史数据流量独立判断是否休眠,利用RTS丢失发现无法通信的邻居节点。NS-2仿真实验表明,相比基于MAC 802.11的AODV,在网络低负载情况下,TSM大幅延长网络生存时间,提高网络吞吐量;无论网络负载高低,TSM对端到端延时和递交成功率的影响很小。更多还原

【Abstract】 As a effective way for energy conservation in mobile Ad Hoc networks (MANETs),sleep management has gained broad at-tention. Sleep management turns off the radio to save energy consumption in idle state. Sleep management achieves the aim at prolonging networks’ lifetime and increasing networks’ throughput under the penalty of end-to-end delay and delivery ratio. A quantitative approach TSM (traffic-based sleep management) is designed to solve these questions where each node independently evaluated sleep-wake sche-dule by history-traffic and found unreachable neighbors by the loss of RTS. The NS-2 simulation indicates that compared to AODV@802.11 approach,the proposed method significantly increases networks’ lifetime and throughput with little impact in end-to-end delay and delivery ratio.更多还原