naa a22 4500 510796532 CHVBK 20180411083338.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11277-011-0463-8 doi (NATIONALLICENCE)springer-10.1007/s11277-011-0463-8 Access Control Engine with Dynamic Priority Resource Allocation for Cognitive Radio Networks [Elektronische Daten] [Ching-Huei Jiang, Ro-Min Weng] An access control engine with dynamic priority resource allocation (ACE-DPRA) is proposed for unlicensed users to utilize free spectrum of wireless communication systems. A cognitive radio (CR) network with sensing and learning abilities is essential for unlicensed users to achieve ACE-DPRA. Three algorithms are included in ACE-DPRA to improve the spectral efficiency. While requesting to set up connection, unlicensed CR users generate excessive interferences to licensed users. The proposed ACE-DPRA with an admission control scheme allows the connection of unlicensed CR users without degrading the communication quality of licensed users. The priority algorithm for utilizing the unused spectrum is designed according to the location information of unlicensed users. A transmitted power control method is achieved by a fuzzy-learning mechanism. The spectral efficiency of wireless communication systems can be increased after adopting the proposed ACE-DPRA algorithm. Simulation results show that licensed users keep the advantages of high transmission data rate, low interference power, and low average outage probability after the connection of unlicensed CR users. Springer Science+Business Media, LLC., 2011 Cognitive radio nationallicence Resource allocation nationallicence Fuzzy-learning algorithm nationallicence Access control nationallicence Priority algorithm nationallicence Jiang Ching-Huei Department of Electrical Engineering, National Dong Hwa University, 97401, Hualien, Taiwan, R.O.C. aut Weng Ro-Min Department of Electrical Engineering, National Dong Hwa University, 97401, Hualien, Taiwan, R.O.C. aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/2(2013-01-01), 473-487 0929-6212 68:2<473 2013 68 11277 https://doi.org/10.1007/s11277-011-0463-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-011-0463-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jiang Ching-Huei Department of Electrical Engineering, National Dong Hwa University, 97401, Hualien, Taiwan, R.O.C aut NATIONALLICENCE 700 1- Weng Ro-Min Department of Electrical Engineering, National Dong Hwa University, 97401, Hualien, Taiwan, R.O.C aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/2(2013-01-01), 473-487 0929-6212 68:2<473 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer