| 摘要: |
| 针对无线传感器网络MAC协议中存在的能耗问题，提出了能量高
效的无线传感器网络混合MAC（EEH-MAC）算法，采用基于TDMA机制的时槽系数动态调整簇内
节点的时槽大小来降低数据的传输时延；同时，对部分不需要数据传输的节点不分配时槽来
减少能耗；按簇内节点剩余能量系数形成时槽分配顺序来减少状态转换的能耗；在簇头之间
采用CSMA/CA机制的随机分配策略进行通信。仿真结果表明，EEH-MAC协议能有效减少能耗并
延长网络生命周期。 |
| 关键词: 无线传感器网络 介质访问控制 动态时隙分配 节能 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（61174013）；江苏省高校自然科学
基金资助项目(BK20110398,08KJD520003) |
|
| An energy-efficient hybrid MAC algorithm in wireless sensor networks |
| LU Yan-hong,ZHANG Ming,FENG Yuan |
| (Electrical Institute,Lianyungang Technical College,Lianyungang 222005,China;School of Electronic Engineering,Huaihai Institute of Technology,Lianyungang 222005,China) |
| Abstract: |
| Aiming at energy consumption for MAC protocol in wireless sensor networks(WSNs),
an energy-efficient hybrid MAC algorithm for WSNs called EEH-MAC is proposed. I
t
adopts time-slot factor based on TDMA to adjust slot size to reduce data transm
ission delay and allows a longer sleep time for the part of nodes which have no
data transmission to save energy.At the same time,a slot order is formed by the
residual energy coefficient to reduce the state conversion energy consumption. I
t uses CSMA/CA mechanism to communicate with cluster heads. Simulation results s
how that EEH-MAC can reduce energy consumption and prolong network lifetime. |
| Key words: wireless sensor network(WSN) medium access control(MAC
) dynamic slot allocation energy saving |
