| 无线传感网络的广播时效性研究 |
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| 引用本文： | 王梅,彭丹丹,张壮壮.无线传感网络的广播时效性研究[J].计算机工程与应用,2022,58(4):100-105. |
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| 作者姓名： | 王梅 彭丹丹 张壮壮 |
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| 作者单位： | 南京信息工程大学 电子与信息工程学院，南京 210044 |
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| 基金项目： | 国家自然科学基金青年项目(61701247)。 |
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| 摘 要： | 无线传感网络的节点采用时隙CSMA/CA协议获取信道并广播数据.为了度量信息广播的时效性,提出了广播信息年龄(broadcast age of information,bAoI)的概念.广播信息年龄等于当前时刻减去刚刚广播成功的那个数据包的生成时刻.bAoI量化了每个节点的数据包的新鲜度,并且描述了节点在网络上快速广播...
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| 关 键 词： | 广播信息年龄(bAoI) 时隙CSMA/CA协议 传输概率 碰撞概率 等效传输模型 |
Research on Broadcast Timeliness of Wireless Sensor Networks |
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| WANG Mei,PENG Dandan,ZHANG Zhuangzhuang.Research on Broadcast Timeliness of Wireless Sensor Networks[J].Computer Engineering and Applications,2022,58(4):100-105. |
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| Authors: | WANG Mei PENG Dandan ZHANG Zhuangzhuang |
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| Affiliation: | School of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China |
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| Abstract: | The nodes in wireless sensor network use slotted CSMA/CA protocol to obtain channel and broadcast data. In order to measure the timeliness of information broadcasting, the concept of broadcast age of information（bAoI） is proposed. BAoI is equal to the current time minus the generation time of the packet that just broadcasts successfully. BAoI quantifies the freshness of each node’s packet, and describes the ability of nodes to broadcast packets quickly over the network. By deducing the transmission probability and collision probability of nodes, the equivalent transmission model of the network is established. On this basis, the average bAoI of the network is studied and calculated. The variation of average bAoI with node density and arrival rate is verified by simulation. |
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| Keywords: | broadcast age of information(bAoI) slotted CSMA/CA protocol transmission probability collision probability equivalent transmission model |
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