Reliable link routing in cognitive radio networks

Authors:
Ren Han;Xiaoxia Huang
Affiliations:
Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China and Graduate University of Chinese Academy of Sciences, Beijing, China and Shenzhen Institutes of Advanced Technology ...;Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
Venue:
CAR'10 Proceedings of the 2nd international Asia conference on Informatics in control, automation and robotics - Volume 3
Year:
2010

Citing 3
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NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey

Computer Networks: The International Journal of Computer and Telecommunications Networking
Multihop cognitive radio networks: to route or not to route

IEEE Network: The Magazine of Global Internetworking - Special issue title on networking over multi-hop cognitive networks
Relay-assisted routing in cognitive radio networks

ICC'09 Proceedings of the 2009 IEEE international conference on Communications

Routing in Distributed Cognitive Radio Networks: A Survey

Wireless Personal Communications: An International Journal

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Abstract

Cognitive Radio (CR) is an emerging technology to deal with the shortcoming of today's fixed spectrum management. In cognitive radio networks (CRN), a secondary user can dynamically access the idle licensed spectrum if no primary user occupies it. Compared to traditional fixed spectrum management policy, CR is able to improve the spectrum efficiency. However, it also presents some research challenges because the link is unreliable in CRN. In this paper we propose a novel reliable link routing (RLR) that specifically considers spectrum mobility. The proposed hybrid routing protocol combines proactive and reactive routing approach according to different conditions. To reduce the overhead that results from flooding and link failures, every secondary user selects reliable relays to forward packets with more reliable links. Simulation result shows that RLR is a viable routing solution to address the dynamic characteristics in CRN.