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Load-balanced Topology Maintenance with Partial Topology Reconstruction  

Hong, Youn-Sik (E0 technics, 기술연구소 S/W그룹)
Lim, Hwa-Seok (인천대학교 컴퓨터공학과 모바일컴퓨팅 연구실)
Abstract
A most important thing in a connected dominating set(CDS)-based routing in a wireless ad-hoc network is to select a minimum number of dominating nodes and then build a backbone network which is made of them. Node failure in a CDS is an event of non-negligible probability. For applications where fault tolerance is critical, a traditional dominating-set based routing may not be a desirable form of clustering. It is necessary to minimize the frequency of reconstruction of a CDS to reduce message overhead due to message flooding. The idea is that by finding alternative nodes within a restricted range and locally reconstructing a CDS to include them, instead of totally reconstructing a new CDS. With the proposed algorithm, the resulting number of dominating nodes after partial reconstruction of CDS is not changed and also its execution time is faster than well-known algorithm of construction of CDS by 20~40%. In the case of high mobility situation, the proposed algorithm gives better results for the performance metrics, packet receive ratio and energy consumption.
Keywords
CDS(Connected Dominating Set); Gateway Node; Backbone Network; Lifetime; Partial Reconstruction;
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Times Cited By KSCI : 1  (Citation Analysis)
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