Research Article
A New Model for Cooperative Cognitive Radio Network Using Coalitional Game
@INPROCEEDINGS{10.1007/978-3-319-90802-1_36, author={Sara Gmira and Abdellatif Kobbane and Mouna Machkour and Jalel Ben-othman}, title={A New Model for Cooperative Cognitive Radio Network Using Coalitional Game}, proceedings={Wireless Internet. 10th International Conference, WiCON 2017, Tianjin, China, December 16-17, 2017, Proceedings}, proceedings_a={WICON}, year={2018}, month={5}, keywords={Cognitive radio Dynamic spectrum access Cooperative relaying Coalitional game}, doi={10.1007/978-3-319-90802-1_36} }- Sara Gmira
Abdellatif Kobbane
Mouna Machkour
Jalel Ben-othman
Year: 2018
A New Model for Cooperative Cognitive Radio Network Using Coalitional Game
WICON
Springer
DOI: 10.1007/978-3-319-90802-1_36
Abstract
In this paper we study the resources access problem in cognitive radio networks, especially we are interested in the large number of secondary users (SUs) present in the system. We propose a model based on channel access process when the PU is active, respecting the level of interference authorized by the operator. In this paper, we take secondary users as positive potential cooperators for the primary users. SUs negotiate with PUs for the acquisition of underutilized channels with exceeded interference caused to the PU. The PU will support additional interference but will benefit from the cooperation of SUs to relay its data. In each transmission frame, one or more secondary users are selected to act as a relay for the primary user and also transmit its own data. We model this cooperation as coalitional game. The utility function considers various factors such as transmission power and noise level. A distributed coalition formation algorithm is also proposed, which can be used by SUs to decide whether to join or leave a coalition. Such a decision is based on whether it can increase the maximal coalition utility value. The objective of this work is to demonstrate that the proposed scheme is able to enhance the network throughput while increasing the opportunity that SUs can access the licensed spectrum owned by PUs.