naa a22 4500 510799124 CHVBK 20180411083347.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11277-013-1079-y doi (NATIONALLICENCE)springer-10.1007/s11277-013-1079-y Zone-Based Sharable Sensing Scheme in Decentralized Cognitive Radio Networks [Elektronische Daten] [Jae-Kark Choi, Sang-Jo Yoo] In cognitive radio networks, secondary users conduct local sensing to use underutilized spectrum bands. However, every secondary user's local sensing usually gives rise to much sensing overhead, and it requires the proper quiet period. Moreover, a secondary user should keep the quiet periods when the secondary users within its interference range perform spectrum sensing. As a result, both the local sensing overhead and quiet periods may reduce the channel utilization of a secondary user. To cope with these problems, in this paper, we propose a zone-based sharable sensing scheme, in which multiple secondary users alternate in local sensing and share the sensing results with others. We defined a certain area, so-called sensing zone, in which the sensing result by one secondary user is valid for others within the given area. The secondary user in charge of sensing in a sensing zone is elected in a distributed way. Each of the other secondary users can determine its quiet period schedules in accordance with the distance between itself and the elected sensing node. Numerical analyses and computer simulations show that our proposed sensing achieves a significantly reduced sensing overhead as well as an improved channel access opportunity. Springer Science+Business Media New York, 2013 Cognitive radio nationallicence Sharable sensing nationallicence Spectrum sensing nationallicence Distributed sensing nationallicence Choi Jae-Kark Graduate School of Information Technology and Telecommunication, Inha University, 253 Yonghyun-dong, Nam-gu, 402-751, Incheon, Korea aut Yoo Sang-Jo Graduate School of Information Technology and Telecommunication, Inha University, 253 Yonghyun-dong, Nam-gu, 402-751, Incheon, Korea aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/2(2013-09-01), 1309-1326 0929-6212 72:2<1309 2013 72 11277 https://doi.org/10.1007/s11277-013-1079-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1079-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Jae-Kark Graduate School of Information Technology and Telecommunication, Inha University, 253 Yonghyun-dong, Nam-gu, 402-751, Incheon, Korea aut NATIONALLICENCE 700 1- Yoo Sang-Jo Graduate School of Information Technology and Telecommunication, Inha University, 253 Yonghyun-dong, Nam-gu, 402-751, Incheon, Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/2(2013-09-01), 1309-1326 0929-6212 72:2<1309 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer