Optimal Convergecast Scheduling Limits for Clustered Industrial Wireless Sensor Networks
Optimal Convergecast Scheduling Limits for Clustered Industrial Wireless Sensor Networks
复制标题
DOI：
10.1155/2012/891321
复制
发表时间：
2012-11
影响因子：
2.3
通讯作者：
Xiaoling Zhang;W. Liang;Haibin Yu;Xisheng Feng
中科院分区：
文献类型：
--
作者：
Xiaoling Zhang;W. Liang;Haibin Yu;Xisheng Feng
增加的移动性加上布线成本和部署时间的可能减少使得无线通信成为工业过程监测和控制的有吸引力的替代方案。利用无线工业网络的主要障碍主要是及时性和可靠性要求。本文针对分簇工业无线传感器网络，分析了无线工业网络中典型的多对一通信方式--汇聚广播调度的性能界限。分析的目的是簇线和簇树拓扑结构。每一种都根据一个应用参数（称为数据更新速率）分为三种场景。首先，我们建立了完成簇内和簇间汇聚传输的时隙数下限。其次，我们建立的信道的数量的下限的基础上的时隙和最大可用信道的情况下的数量的下限。最后，我们进行了广泛的分析，考虑包重传，以满足可靠性要求。实验结果验证了理论分析的正确性和严密性。
Increased mobility coupled with a possible reduction of cabling costs and deployment time makes wireless communication an attractive alternative for the industrial process monitoring and control. The major obstacles toward the utilization of wireless industrial networks are predominantly the timeliness and reliability requirements. In this paper, orienting to clustered industrial wireless sensor networks, we analyze the performance bounds of the convergecast scheduling, which is a typical many-to-one communication in wireless industrial networks. The analysis aims to the cluster-line and cluster-tree topologies. Each kind is future divided into three scenarios according to an application parameter, named data update rate. Firstly, we establish the lower bounds on the number of timeslots to finish the intracluster and the intercluster convergecast transmissions. Secondly, we establish the lower bounds on the number of channels based on the lower bounds on the number of timeslots and maximum available channels in a multichannel scenario. Lastly, we carry out the extensive analysis-taking packet retransmissions into consideration so as to meet the reliability requirement. Experiment results validate the correctness and tightness of our theory analysis.