NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Stackelberg game for utility-based cooperative cognitiveradio networks
Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing
Throughput maximization with multiuser non-selfish cognitive relaying in CR networks
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Spectrum Leasing to Cooperating Secondary Ad Hoc Networks
IEEE Journal on Selected Areas in Communications
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This work is directed towards a symbiotic architecture called cognitive relaying with frequency incentive for multiple primary users (CRFI-M). The rationale of CRFI-M is that the primary users (PUs) of a cognitive radio (CR) network, with weak transmission links, seek cooperation from the secondary user (SU) nodes in their vicinity to achieve as much throughput as they can get from their direct links. In return they reward the SUs with incentive frequency bands for their own communication. Each PU has its own distinct bandwidth of operation; however, when relaying through the SU network it can also use the bandwidth of the other PUs to enhance its throughput. Furthermore, the incentive frequency bands may be offered as a complete band-set or interleaved bands. Cross-layer optimization problems are formulated for each of these variants of the CRFI-M paradigm in a multi-hop multi-channel SU network. The frequency incentive that should be awarded to the SUs by each PU is analyzed by means of a utility-based decision-making process, and its efficient utilization is proposed. To make the CRFI-M scheme practically realizable, a MAC scheduling protocol is described. Simulation results are furnished to demonstrate the proof of concept.