DocumentCode :
1002598
Title :
Differentiated Surveillance for Static and Random Mobile Sensor Networks
Author :
Lu, Jun ; Suda, Tatsuya
Author_Institution :
Sch. of Inf. & Comput. Sci., Univ. of California, Irvine, CA
Volume :
7
Issue :
11
fYear :
2008
fDate :
11/1/2008 12:00:00 AM
Firstpage :
4411
Lastpage :
4423
Abstract :
The utility of a sensor network derives primarily from the sensing data it gathers. Therefore, a critical issue of sensor networks is to efficiently provide sensing coverage. This paper proposes a scheme, enhanced differentiated surveillance (EDS), to maintain the required coverage for sensor networks by establishing working schedules of sensors for the purpose of energy saving. EDS allows every sensor in a sensor network to establish its working schedule in a distributive manner, based on random reference times generated through integer hashing and a proposed coverage measurement rule. The required coverage is continuously guaranteed when every sensor senses following its own working schedule.While most existing coverage maintenance schemes are only applicable for static sensors with equal sensing range (homogeneous sensors), EDS is versatile in applications. It can be applied to sensors with different sensing ranges (heterogeneous sensors), and extended to random mobile sensor networks, where sensors randomly roam and cannot control their movements. Compared with existing work, the advantages of EDS lie in minimum communication overhead, fast convergence, load balancing, and high battery efficiency. The effectiveness and efficiency of EDS are investigated through numerical examples of static and random mobile sensor networks.
Keywords :
mobile radio; surveillance; wireless sensor networks; enhanced differentiated surveillance; integer hashing; load balancing; minimum communication overhead; random mobile sensor networks; sensing data; sensor network derives; static mobile sensor networks; Batteries; Communication system control; Convergence; Load management; Memory; Mobile communication; Monitoring; Surveillance; Target tracking; Wireless sensor networks; Coverage maintenance; mobile sensors; sensing coverage; sensor networks;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/T-WC.2008.071121
Filename :
4684617
Link To Document :
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