NDLI: Hybrid channel assignment in multi-hop multi-radio cognitive ad hoc network

Content Provider	IEEE Xplore Digital Library
Author	Jiaxiao Zheng Wenjun Xu Gaofei Sun Xiaohua Tian Xinbing Wang
Copyright Year	2013
Description	Author affiliation: Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China (Jiaxiao Zheng; Wenjun Xu; Gaofei Sun; Xiaohua Tian; Xinbing Wang)
Abstract	The existence of under-utilized spectrum and the congestion of certain spectrum give rise to development on cognitive radios as a promising technology to address these problems. However, the general precondition that secondary users should evacuate from the channel which primary users are willing to use, makes the cognitive ad hoc networks vulnerable and unstable since network partition may occur since the links affected by primary users may form a cut set of the network. In this paper, we address this problem through a hybrid channel assignment scheme, where channels are carefully assigned to each link to guarantee the connectivity and the capacity based on spanning trees. Since the optimal solution is NP-hard, we propose an effective approximation algorithm. Also, dynamic channel assignment is proposed to further improve the network performance.
Starting Page	1449
Ending Page	1453
File Size	595616
Page Count	5
File Format	PDF
ISBN	9781467331227
ISSN	15503607
DOI	10.1109/ICC.2013.6654715
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-09
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel allocation Heuristic algorithms Ad hoc networks Network topology Topology Robustness Interference
Content Type	Text
Resource Type	Article

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