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http://dx.doi.org/10.3745/KTCCS.2017.6.5.239

Grid Structure-Based Mobility Support Scheme for Sink Groups in Wireless Sensor Networks  

Yim, Yongbin (충남대학교 컴퓨터공학과)
Lee, Euisin (충북대학교 정보통신공학부)
Kim, Sang-Ha (충남대학교 컴퓨터공학과)
Publication Information
KIPS Transactions on Computer and Communication Systems / v.6, no.5, 2017 , pp. 239-246 More about this Journal
Abstract
Communications for mobile sink groups such as rescue teams or platoons bring about a new challenging issue for handling group mobility in wireless sensor networks. Recently, a group region-based approach has been proposed to send data to a mobile sink group. However, it uses excessive flooding for 3 steps (group region discovery, region information notification, and data dissemination) to support mobile sink group. Thus, it causes high energy consumption and data delivery failure. Moreover, its per-sink mobility supporting scheme makes energy consumption and data delivery failure more serious. Thus, this paper proposes an Energy-efficient and Reliable Mobile Group communication protocol (ERMG) to support a mobile sink group, which exploits a virtual grid structure. For the group region discover and notification and the data dissemination, ERMG uses communications with only cell heads of grid cells that manages group sinks. ERMG also uses a per-grid based scheme to support sink mobility. Simulation results show that ERMG has 30% less energy consumption and 6% more desired delivery deadline success ratio than the existing protocols.
Keywords
Wireless Sensor Networks; Mobile Sink Groups; Energy-efficiency; Reliability; Mobility Support;
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