標題: Joint Routing and Spectrum Allocation for Multi-Hop Cognitive Radio Networks with Route Robustness Consideration
作者: Shih, Chao-Fang
Liao, Wanjiun
Chao, Hsi-Lu
資訊工程學系
Department of Computer Science
關鍵字: Cognitive radio;routing;robustness;spectrum allocation
公開日期: 1-九月-2011
摘要: In this paper, we introduce the concept of "route robustness" for path selection in multi-hop cognitive radio networks. We demonstrate that the aggregate throughput and the robustness of routes determined by the proposed route selection strategy are superior to existing rate-based selection strategies. The rationale behind our approach is to guarantee a basic level of robustness for a set of routes (referred to as skeletons in this paper). Then, we select some routes from this robust route set and determine the spectrum to be allocated on each link along these routes such that the system throughput is maximized. We also design a polynomial time algorithm for this problem, and evaluate our proposed mechanism via simulations. The results show that our proposed algorithm indeed achieves a near optimal solution of this problem for multi-hop overlay CR networks.
URI: http://dx.doi.org/10.1109/TWC.2011.072011.101249
http://hdl.handle.net/11536/14793
ISSN: 1536-1276
DOI: 10.1109/TWC.2011.072011.101249
期刊: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume: 10
Issue: 9
起始頁: 2940
結束頁: 2949
顯示於類別:期刊論文


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  1. 000297246300019.pdf