title   
  

Optimal scheduling in cooperate-to-join cognitive radio networks

Khalil, Karim and Karaca, Mehmet and Erçetin, Özgür and Ekici, Eylem (2011) Optimal scheduling in cooperate-to-join cognitive radio networks. In: Infocom 2011, Beijing, CN

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Official URL: http://dx.doi.org/10.1109/INFCOM.2011.5935142

Abstract

Optimal transmission scheduling in wireless cognitive networks is considered under the spectrum leasing model. We propose a cooperative scheme in which secondary nodes share the time slot with primary nodes in return for cooperation. Cooperation is feasible only if the system's performance is improved over the non-cooperative case. First, we investigate a scenario where secondary users are interested in immediate rewards. Then, we formulate another problem where the secondary users are guaranteed a portion of the primary utility, on a long term basis, in return for cooperation. In both scenarios, our proposed schemes are shown to outperform non-cooperative scheduling schemes, in terms of both individual and total expected utility, for a given set of feasible constraints. Based on Lyapunov Optimization techniques, we show that our schemes are arbitrarily close to the optimal performance at the price of reduced convergence rate.

Item Type:Papers in Conference Proceedings
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication
ID Code:17666
Deposited By:Özgür Erçetin
Deposited On:05 Dec 2011 15:04
Last Modified:05 Dec 2011 15:04

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