Please use this identifier to cite or link to this item: https://doi.org/10.1109/WIOPT.2006.1666464
Title: Scheduling sensor activity for point information coverage in wireless sensor networks
Authors: Wang, B. 
Chua, K.C. 
Srinivasan, V. 
Wang, W.
Issue Date: 2006
Source: Wang, B.,Chua, K.C.,Srinivasan, V.,Wang, W. (2006). Scheduling sensor activity for point information coverage in wireless sensor networks. 2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks, WiOpt 2006 : -. ScholarBank@NUS Repository. https://doi.org/10.1109/WIOPT.2006.1666464
Abstract: An important application of wireless sensor networks is to perform monitoring missions, for example, to monitor some targets of interests at all times. Sensors are often equipped with non-rechargeable batteries with limited energy and energy saving is a critical aspect for wireless sensor networks. If a target is monitored simultaneously by serval sensors, some of them can be switched off to save energy without causing mission failure and by which their operational times as well as network lifetime can be prolonged. In this paper, we study problem of scheduling sensor activity to cover a set of targets with known locations such that all targets can be monitored all time and network can operate as long as possible. A solution to this scheduling problem is to partition all sensors into sensor covers such that each cover can monitor all targets and covers are activated successively. In this paper, we propose to use notion of information coverage which is based on estimation theory to exploit collaborative nature of wireless sensor networks, instead of using conventional definition of coverage. Due to use of information coverage, a target that is not within sensing disk of any single sensor can still be considered to be monitored (information covered) by cooperation of more than one sensor. © 2006 IEEE.
Source Title: 2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks, WiOpt 2006
URI: http://scholarbank.nus.edu.sg/handle/10635/71715
ISBN: 0780395492
DOI: 10.1109/WIOPT.2006.1666464
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