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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29530

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Multichannel Scheme under Max-Min Fairness Environment for Cognitive Radio Networks
This paper develops a multiple channel assignment model, which allows to take advantage of spectrum opportunities in cognitive radio networks in the most efficient way. The developed scheme allows making several assignments of available and frequency adjacent channel, which require a bigger bandwidth, under an equality environment. The hybrid assignment model it is made by two algorithms, one that makes the ranking and selects available frequency channels and the other one in charge of establishing the Max-Min Fairness for not restrict the spectrum opportunities for all the other secondary users, who also claim to make transmissions. Measurements made were done for average bandwidth, average delay, as well as fairness computation for several channel assignments. Reached results were evaluated with experimental spectrum occupational data from captured GSM frequency band. The developed model shows evidence of improvement in spectrum opportunity use and a wider average transmission bandwidth for each secondary user, maintaining equality criteria in channel assignment.
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[1] Y. Cao, V. O. Li y Z. Cao, «Scheduling Delay-Sensitive and Best-Effort Traffics in Wireless Networks,» Communications, vol. 3, pp. 2208-2212, 2003.
[2] C. Chih-Yung, L.-L. Hung, C.-T. Chang,. T.-L. Wang y . T.-C. Wang, «A Cognitive Radio MAC Protocol for Exploiting Bandwidth Utilization in Wireless Networks,» de Wireless Communications and Mobile Computing Conference (IWCMC), 2013.
[3] Akyildiz, W.-Y. Lee, M. Vuran Y. S. Mohanty, «NeXt generation/dynamic spectrum access/cognitive radio wireless networks: A survey,» Elsevier, pp. 2127-2159, 2006.
[4] P. Huang, C. Wang y L. Xiao, «RC-MAC: A Receiver-Centric MAC Protocol,» IEEE Transactions on Computers, vol. 64, nº 4, pp. 1149- 1161, Abril 2015.
[5] M. Ghorbanzadeh, A. Abdelhadi y C. Clancy, «A Utility Proportional Fairness Radio Resource Block Allocation in Cellular Networks,» de 2015 International Conference on Computing, Networking and Communications, Communication QoS and System Modeling Symposium, 2015.
[6] Y. Liu y E. Knightly, «Opportunistic Fair Scheduling over Multiple Wireless Channels,» IEEE Computer and Communications, vol. 2, pp. 1106-1115, 2003.
[7] M. Laddomada, F. Mesiti, M. Mondin y F. Daneshgaran, «On the Throughput Performance of Multirate IEEE 802.11 Networks with Variable-Loaded Stations: Analysis, Modeling, and a Novel Proportional Fairness Criterion,» Wireless Communications, IEEE Transactions, vol. 9, nº 5, pp. 1594-1607, 2010.
[8] S. C. Liew Y Y. Jun, «Proportional Fairness in Multi-Channel Multi- Rate Wireless Networks–Part I: The Case of Deterministic Channels with Application to AP Association Problem in Large-Scale WLAN,» IEEE Transactions on Wireless Communications, vol. 7, nº 9, pp. 3446- 3456, 2008.
[9] Y. J. Zhang y S. C. Liew, «Proportional Fairness in Multi-Channel Multi-Rate Wireless Networks-Part II: The Case of Time-Varying Channels with Application to OFDM Systems,» Wireless Communications, IEEE Transactions , vol. 7, nº 9, pp. 3457-3467, 2008.
[10] W. Li y P. Yi, Resource allocation in next generation wireless networks, Nova Publishers, 2006.
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