Publication 2008 Issue No. 9 - September Abstract - On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links
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On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links
September 2008 (vol. 7 no. 9)
pp. 1098-1109
 ASCII Text x My T. Thai, Ravi Tiwari, Ding-Zhu Du, "On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links," IEEE Transactions on Mobile Computing, vol. 7, no. 9, pp. 1098-1109, September, 2008.
 BibTex x @article{ 10.1109/TMC.2008.22,author = {My T. Thai and Ravi Tiwari and Ding-Zhu Du},title = {On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links},journal ={IEEE Transactions on Mobile Computing},volume = {7},number = {9},issn = {1536-1233},year = {2008},pages = {1098-1109},doi = {http://doi.ieeecomputersociety.org/10.1109/TMC.2008.22},publisher = {IEEE Computer Society},address = {Los Alamitos, CA, USA},}
 RefWorks Procite/RefMan/Endnote x TY - JOURJO - IEEE Transactions on Mobile ComputingTI - On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional LinksIS - 9SN - 1536-1233SP1098EP1109EPD - 1098-1109A1 - My T. Thai, A1 - Ravi Tiwari, A1 - Ding-Zhu Du, PY - 2008KW - Wireless communicationKW - Algorithm/protocol design and analysisKW - Combinatorial algorithmsVL - 7JA - IEEE Transactions on Mobile ComputingER -
Since there is no fixed infrastructure in wireless ad hoc networks , virtual backbone has been proposed as the routing infrastructure to alleviate the broadcasting storm problem. The virtual backbone construction has been studied extensively in {\em undirected} graphs, especially in unit disk graphs, in which each node has the same transmission range. In practice, however, transmission ranges of all nodes are not necessarily equal. In this paper, we model such a network as a disk graph, where unidirectional links are considered. To study the virtual backbone construction in disk graphs, we consider two problems: Strongly Connected Dominating Set (SCDS) and Strongly Connected Dominating and Absorbing Set (SCDAS). We propose a constant approximation algorithm and discuss its improvements for the SCDS problem . We also propose a heuristic for the SCDAS problem. Through extensive simulations, we verify our theoretical analysis and also demonstrate that the SCDS can be extended to form an SCDAS with marginal extra overhead.

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Index Terms:
Wireless communication, Algorithm/protocol design and analysis, Combinatorial algorithms
Citation:
My T. Thai, Ravi Tiwari, Ding-Zhu Du, "On Construction of Virtual Backbone in Wireless Ad Hoc Networks with Unidirectional Links," IEEE Transactions on Mobile Computing, vol. 7, no. 9, pp. 1098-1109, Sept. 2008, doi:10.1109/TMC.2008.22
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