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Local Update-based Multicasting Scheme for Mobile Sinks in Wireless Sensor Networks  

Lee, Jeong-Cheol (충남대학교 컴퓨터공학과)
Park, Ho-Sung (충남대학교 컴퓨터공학과)
Oh, Seung-Min (충남대학교 컴퓨터공학과)
Jung, Ju-Hyun (충남대학교 컴퓨터공학과)
Park, Soo-Chang (충남대학교 컴퓨터공학과)
Lee, Eui-Sin (충남대학교 컴퓨터공학과)
Kim, Sang-Ha (충남대학교 컴퓨터공학과)
Abstract
Data multicasting from a source to multiple sinks in wireless sensor networks is used to achieve both reducing communication costs and energy efficiency. Almost all existing schemes for the multicasting might be effectively performed by optimal construction of a multicasting tree between a source and multiple stationary sinks. However, in practical sensor applications, sinks could move around on the wireless sensor networks for own missions, such as scouting of soldiers and saving lives of victims by firefighters. Unfortunately, the sink mobility causes frequent entire reconstruction of the multicasting tree and thus it leads to exhaustion of battery power of sensors. Hence, we propose an energy-efficient multicast protocol to support multiple mobile sinks by the local multicast tree reconstruction, called Local Update-based geographic Multicasting for Mobile sinks (LUMM) for wireless sensor networks. Our simulation results show that our scheme for mobile sinks is more efficient in terms of energy resource management than other exist works.
Keywords
Wireless sensor networks; Multicasting; Sink mobility;
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