计算机科学 ›› 2020, Vol. 47 ›› Issue (11A): 310-315.doi: 10.11896/jsjkx.200400068
张华伟1, 谢东风2, 邹艳芳2, 胡永辉2
ZHANG Hua-wei1, XIE Dong-feng2, ZOU Yan-fang2, HU Yong-hui2
摘要： 针对Ad Hoc网络无中心、拓扑易变、多跳节点共享信道资、业务多样的特点,提出了一种QoS保证的多跳动态资源分配协议。设计帧结构包括引导时隙、广播/预留时隙、竞争时隙3个部分,同时满足多节点公平接入及实时业务的时延要求;采用三跳防冲突方法复用信道资源,提高资源利用率,降低接收端的噪声门限,最小化冲突的可能性;根据QoS需求抢占空闲广播/预留时隙,抢占标准包括业务优先级、时隙空闲概率以及空闲时隙连续概率;分别对引导时隙、广播/预留时隙、竞争时隙的时隙收敛过程进行说明。通过MATLAB仿真可知,提出的QoS保证的多跳动态资源分配协议可以提高数据传输的网络分组成功投递率,降低平均时延,且更适合负载较大、节点数量较多的网络。
中图分类号:
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