Title: | On greedy construction of connected dominating sets in wireless networks |
Authors: | Li, YS Thai, MT Wang, F Yi, CW Wan, PJ Du, DZ 資訊工程學系 Department of Computer Science |
Keywords: | wireless network;connected dominating set;maximal independent set;greedy algorithm |
Issue Date: | 1-Dec-2005 |
Abstract: | Since no fixed infrastructure and no centralized management present in wireless networks, a connected dominating set (CDS) of the graph representing the network is widely used as a virtual backbone. Constructing a minimum CDS is NP-hard. In this paper, we propose a new greedy algorithm, called S-MIS, with the help of Steiner tree that can construct a CDS within a factor of 4.8 + ln5 from the optimal solution. We also introduce the distributed version of this algorithm. We prove that the proposed algorithm is better than the current best performance ratio which is 6.8. A simulation is conducted to compare S-MIS with its variation which is rS-MIS. The simulation shows that the sizes of the CDSs generated by S-MIS and rS-MIS are almost the same. Copyright (c) 2005 John Wiley & Sons, Ltd. |
URI: | http://dx.doi.org/10.1002/wcm.356 http://hdl.handle.net/11536/12991 |
ISSN: | 1530-8669 |
DOI: | 10.1002/wcm.356 |
Journal: | WIRELESS COMMUNICATIONS & MOBILE COMPUTING |
Volume: | 5 |
Issue: | 8 |
Begin Page: | 927 |
End Page: | 932 |
Appears in Collections: | Articles |
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