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PTAS for routing-cost constrained minimum connected dominating set in growth bounded graphs

Lidong Wu (), Hongwei Du (), Weili Wu (), Yuqing Zhu (), Ailan Wang () and Wonjun Lee ()
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Lidong Wu: University of Texas at Dallas
Hongwei Du: Harbin Institute of Technology, Shenzhen Graduate School
Weili Wu: University of Texas at Dallas
Yuqing Zhu: University of Texas at Dallas
Ailan Wang: Taiyuan University of Technology
Wonjun Lee: Korea University

Journal of Combinatorial Optimization, 2015, vol. 30, issue 1, No 2, 18-26

Abstract: Abstract Connected dominating set (CDS) has played an important role in building virtual backbone, which is used on unicast, multicast, and fault-tolerant routing in wireless sensor networks. In order to reduce traffic congestion and communication delay, a routing-cost constrained minimum CDS (ROC–CDS) has been studied extensively in the literature. In this paper, we present a PTAS for $$\alpha $$ α ROC–CDS where $$\alpha \ge 5$$ α ≥ 5 , that is, there exists a polynomial-time $$(1+\varepsilon )$$ ( 1 + ε ) -approximation for minimum CDS under constraint that for every pair of nodes u and v, $$m_{CDS}(u,v) \le m(u,v)$$ m CDS ( u , v ) ≤ m ( u , v ) where $$m(u,v)$$ m ( u , v ) denotes the number of intermediate nodes in the shortest path between u and v, and $$m_{CDS}(u,v)$$ m CDS ( u , v ) denotes the number of intermediate nodes of the shortest path between u and v through CDS produced by the approximation algorithm.

Keywords: Growth bounded graphs; Minimum connected dominating set; Routing cost constraint; Algorithm PTAS (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1007/s10878-013-9626-8

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