期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：68
期号：3
出版社：Journal of Theoretical and Applied
摘要：Past studies in WSN have concentrated on data routing, energy efficiency, data latency and protocol development. In this paper, a low latency guaranteed time slot MAC protocol based on data priority with a bias for low energy nodes is proposed. The intelligent sensors collect event based data and polled data in a target area. The reduction in data latency is based on forwarding data packets which have a higher priority in a wireless network. DP-MAC has been designed to address the data latency problem to ensure that emergency and hazardous events in a transportation network are reported with minimum delay. The design of such a scheme is based on the collision free TDMA mechanism. The data priority is determined based on the type of event and the node lifetime energy information. The analytical and simulation results are presented in this scheme and a comparison is made with a network that treats all the nodes and their data packets without bias. The improvement in data latency for prioritized messages specifically for emergency information in automotive land based networks is presented.
关键词：Wireless Sensor Network (WSN); Data Priority MAC protocol (DP-MAC); SIFS; TDMA.
