摘要
文章通过对RBAR协议和OAR协议的分析认为在Ad Hoc网络的MAC层可以通过统计ACK帧对信道质量进行估计，并且可将信道质量的估计值一信道稳定度作为自适应的的门限，对不同的门限值分别采用RBAR协议和OAR协议的机制进行自适应。通过对协议进行传真发现，该协议在节点高速运动（此时信道稳定度变化剧烈）时的性能要优于OAR和RBAR协议。
The account of ACK frame can be thought as the estimate of channel quality. We use this estimate value as a threshold of adaptive. The proposed protocol can chose the operating mechanism of RBAR or OAR by different threshold value to adapt various situations automafically. Simulation results show that the proposed protocol have a better performance than OAR and RBAR when the nodes move in a high speed.
作者
贾勇
JIA Yong （Department of Science-Technology Domain, Xi＇an Institute of Post and Telecommunications, Xi＇an 710121, China）
出处
《电脑知识与技术》
2007年第6期1241-1242,1288,共3页
Computer Knowledge and Technology
