WSN03-6: Assuring K-Coverage in the Presence of Mobility in Wireless Sensor Networks
Heeyeol Yu; Iyer, J.; Hogil Kim; Eun Jung Kim; Ki Hwan Yum; Pyeong Soo Mah
Global Telecommunications Conference, 2006. GLOBECOM apos;06. IEEE
Volume , Issue , Nov. 27 2006-Dec. 1 2006 Page(s):1 - 5
Digital Object Identifier 10.1109/GLOCOM.2006.942
Summary:Along with energy conservation, it has been a critical issue to maintain a desired degree of coverage in wireless sensor networks (WSNs), especially in a mobile environment. By enhancing a variant of random waypoint (RWP) model, we propose mobility resilient coverage control (MRCC) to assure if-coverage in the presence of mobility. Our basic goals are (1) to elaborate the probability of breaking if-coverage with moving-in and moving-out probabilities, and (2) to issue wake-up calls to sleeping sensors to meet user requirement of if-coverage even in the presence of mobility. Furthermore, by separating the mobility behavior into average and individual, the probability of breaking if-coverage can be precisely calculated, hence reducing the number of sensors to be awakened. Our experiments with NS2 show that MRCC with the individual probability achieves better coverage by 1.4% with 22% fewer numbers of active sensors than that of existing coverage configuration protocol (CCP).
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