Achieving context awareness and intelligence in distributed Cognitive Radio Networks: a payoff propagation approach

Yau, K.-L., Komisarczuk, Peter and Teal, P. D. (2011) Achieving context awareness and intelligence in distributed Cognitive Radio Networks: a payoff propagation approach. In: 7th International Symposium on Frontiers in Networking with Applications (FINA'11) at the 25th International Conference on Advanced Information Networking and Applications (AINA'11) IEEE, 22-25 March 2011, Biopolis, Singapore.

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Abstract

Cognitive Radio (CR) is a next-generation wireless
communication system that exploits underutilized licensed
spectrum to optimize the utilization of the overall radio
spectrum. A Distributed Cognitive Radio Network (DCRN) is a
distributed wireless network established by a number of CR
hosts in the absence of fixed network infrastructure. Context
awareness and intelligence are key characteristics of CR
networks that enable the CR hosts to be aware of their
operating environment in order to make an optimal joint
action. This research aims to achieve context awareness and
intelligence in DCRN using our novel Locally-Confined Payoff
Propagation (LCPP), which is an important feature in MultiAgent
Reinforcement Learning (MARL). The LCPP
mechanism is suitable to be applied in most applications in
DCRN that require context awareness and intelligence such as
scheduling, congestion control, as well as Dynamic Channel
Selection (DCS), which is the focus of this paper. Simulation
results show that the LCPP mechanism is a promising
approach. The LCPP mechanism converges to an optimal joint
action including networks with cyclic topology. Fast
convergence is possible. The investigation in this paper serve as
an important foundation for future work in this research field.

Item Type: Conference or Workshop Item (Paper)
Subjects: Computer science, knowledge and information systems
Depositing User: Vani Aul
Date Deposited: 21 Mar 2014 15:07
Last Modified: 11 Dec 2015 11:09
URI: http://repository.uwl.ac.uk/id/eprint/775

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