Minimum Connected R-Hop k-Dominating Set in Wireless Networks
Minimum Connected R-Hop k-Dominating Set in Wireless Networks
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DOI:
10.1142/s1793830909000087
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发表时间:
2009-03
期刊:
影响因子:
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通讯作者:
Deying Li;Lin Liu;Huiqiang Yang
中科院分区:
文献类型:
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作者:
Deying Li;Lin Liu;Huiqiang Yang
In this paper, we study the connected r-hop k-dominating set problem in wireless networks. We propose two algorithms for the problem. We prove that algorithm I for UDG has (2r + 1)3 approximate ratio for k ≤ (2r + 1)2 and (2r + 1)((2r + 1)2 + 1)-approximate ratio for k > (2r + 1)2. And algorithm II for any undirected graph has (2r + 1)ln(Δr) approximation ratio, where Δr is the largest cardinality among all r-hop neighborhoods in the network. The simulation results show that our algorithms are efficient.