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无线Adhoc网络中协作重传机制的改进

DOI: 10.13190/jbupt.200704.23.liy, PP. 23-27

Keywords: 协作重传,业务优先级,重传成功率,Ad,hoc网络

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Abstract:

基于协作式停等协议,提出了无线Adhoc网络中改进的协作重传机制。第一,区分协作和非协作的帧,防止应答对象的混淆和协作扩散;第二,在节点内部设定业务流优先级,确保协作重传的帧能被优先发送;第三,采用基于优先级的退避机制,选择瞬时最优节点重传数据。理论分析和仿真结果表明,改进的协作重传机制可以有效降低重传碰撞概率,提高重传成功率,并改善系统吞吐量。

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