Research Article
Path-Centric Channel Assignment in Cognitive Radio Wireless Networks
@INPROCEEDINGS{10.1109/CROWNCOM.2007.4549817, author={Chunsheng Xin and Liangping Ma and Chien-Chung Shen}, title={Path-Centric Channel Assignment in Cognitive Radio Wireless Networks}, proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={6}, keywords={Cognitive radio wireless network channel assignment dynamic spectrum access wireless networks interface assignment programmable radio wireless network}, doi={10.1109/CROWNCOM.2007.4549817} }- Chunsheng Xin
Liangping Ma
Chien-Chung Shen
Year: 2008
Path-Centric Channel Assignment in Cognitive Radio Wireless Networks
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2007.4549817
Abstract
Today’s spectrum allocation framework grants a spectrum band to each wireless service for exclusive usage, resulting in the spectrum exhaustion problem. Nevertheless, many recent studies showed that a large number of spectrum bands are not used in most of time. To resolve spectrum exhaustion problem, the cognitive radio wireless networks, termed CogNets in this paper, were proposed in the literature, where unlicensed users are allowed to access licensed spectrum, provided that licensed users are not interfered. The CogNet nodes play the role of secondary user in this shared spectrum access framework, and thus the spectrum bands used by CogNets are inherently heterogeneous and dynamic. To establish the communication infrastructure for a CogNet, the cognitive radio of each CogNet node detects the accessible spectrum bands and chooses one as its operating frequency, a process termed channel assignment. In this paper we propose a path-centric channel assignment algorithm for multi-hop ad hoc CogNets. Numerical results showed that the proposed algorithm can obtain very good performance.
