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作 者:楼巧巧 赵知劲[1,2] Lou Qiaoqiao;Zhao Zhijin(School of Telecommunication Engineering of Hangzhou Dianzi University,Hangzhou 310018,Zhejiang,China;State Key Lab of Information Control Technology in Communication System of No.36 Research Institute,China Electronic Technology Corporation,Jiaxing 314001,Zhejiang,China)
机构地区:[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]中国电子科技集团第36研究所通信系统信息控制技术国家级重点实验室,浙江嘉兴314001
出 处:《计算机应用与软件》2023年第2期144-150,共7页Computer Applications and Software
基 金:国防预研项目(4100101040)。
摘 要:针对避免广播冲突的CR Ad Hoc网络的分布式广播协议广播成功率低和基于选择性广播信道集的低延迟广播算法广播冲突率高的问题,提出基于中继节点选择的多跳CR Ad Hoc网络广播算法。根据节点可用信道集的大小和基于邻居度的转发概率选取中继节点,并对相应中继节点的可用信道集随机左移,在保证一定广播成功率、广播时延和广播冲突率的前提下,降低节点转发率,减少网络中的冗余信息;建立综合评价函数对广播算法的综合性能进行了定量分析;给出广播冲突概率推导。仿真结果表明,该算法与分布式广播协议相比,提高了广播成功率,降低了广播时延;与低延迟广播算法相比,降低了节点转发率和广播冲突概率。根据综合评价函数,该广播算法的综合性能更好。The distributed broadcast protocol in CR Ad Hoc networks has low broadcast success rate,and low-latency broadcast algorithm based on selective broadcast channel set has high broadcast conflict rate.To avoid these problems,this paper proposes a multi-hop CR Ad Hoc broadcast algorithm based on relay node selection.The relay node was selected according to the size of the available channel set of the node and the forwarding probability based on the neighbor’s degree.By randomly shifting the available channel set of the corresponding relay node to the left,the node forwarding probability and the redundant information in the network were reduced on the premise of ensuring a certain broadcast success rate,broadcast delay and broadcast conflict rate.The comprehensive evaluation function was established to quantitatively analyze the comprehensive performance of the broadcast algorithm.And the broadcast conflict probability was derived.The simulation results show that compared with the distributed broadcast protocol,the proposed algorithm improves the broadcast success rate and reduces the broadcast delay.Compared with the low-latency broadcast algorithm,it reduces the node forwarding rate and broadcast conflict probability.The comprehensive performance of this algorithm is better according to the comprehensive evaluation function.
关 键 词:广播 移动自组织网络 转发概率 中继节点 广播冲突
分 类 号:TP3[自动化与计算机技术—计算机科学与技术]
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