一种适用于Ad hoc网络的DCF协议自适应功率控制机制

雷磊; 许宗泽

doi:10.3724/SP.J.1146.2007.01094

一种适用于Ad hoc网络的DCF协议自适应功率控制机制

doi: 10.3724/SP.J.1146.2007.01094

雷磊,
许宗泽

基金项目:

国家部委基金(402040101)资助课题

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出版历程
- 收稿日期: 2007-07-02
- 修回日期: 2007-11-19
- 刊出日期: 2009-01-19

An Adaptive Power Control Mechanism of DCF Protocol in Ad hoc Networks

Lei Lei,
Xu Zong-ze

摘要

摘要: 该文对载波检测无线网络中的冲突干扰问题进行了分析，在此基础上提出了一种适用于Ad hoc网络的DCF协议自适应功率控制机制。该机制能根据各个接收节点的通信状况，自适应的调整接收节点的CTS帧发送功率和收方决定的数据帧发送功率。仿真证明，在DCF协议中引入该机制后，不仅能有效节省节点能耗，延长网络的生存时间，还能同时增大网络的频率空间复用度，提高网络的平均吞吐量。
- Ad hoc网络;DCF协议;功率控制;自适应控制
Abstract: The conflict interference issue of the carrier sensing wireless network is investigated, and an adaptive power control mechanism of DCF protocol in Ad hoc networks is proposed. According to the communication status of the receiver, this mechanism adjusts adaptively the CTS frame transmission power of the receiver and the data frame transmission power of the transmitter which is decided by the receiver. The simulation results show that DCF protocol with this mechanism can not only save the average energy consumption of the nodes, thus prolong the lifetime of the network, but also can improve spatial reuse of the wireless channel, and improve the average throughput of the network significantly.

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