期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2013
卷号：4
期号：3-3
出版社：Seventh Sense Research Group
摘要：With the advancement in wireless and electronics has development of low cost sensor. The sensors are used in various areas (e.g. home, military, and health). For different application areas, there are the different problems that researchers are currently resolving. Time synchronization is also challenge for wireless sensor networks Time synchronization is big challenge for the wireless sensor networks. In the distributed system synchronization is required with the challenge or requirements of energy, time cost, scope, and lifetime. Existing time synchronization methods need extended to meet these requirements. This paper surveys and evaluates the factors like precision, accuracy, cost, and complexity. The design considerations presented here can help either in choosing an existing synchronization protocol or in defining a new protocol that is best suited to the specific needs of a sensornetwork application. In the distributed system, each node in the network having own clock and own motion of time. To support the elimination of redundant data a common time scale among all the sensor nodes are required. And also with this energy and time cost for the sensor is also required. Different type protocols are also discussed in this paper which supports this challenge for wireless sensor networks.
关键词：clock drift; clock offset; clock rate; medium access control; wireless sensor network; Time synchronization; Time synchronization Protocols for wireless sensor networks
