Mueck, Markus DominikSato, NaotakaSun, ChenFreda, MartinoOjanen, PekkaZhou, DongXiao, JunfengDionísio, Rogério PaisMarques, Paulo2017-04-042017-04-042015MUECK, M. D. [et al.] (2015) - ETSI opportunistic spectrum sharing technology for (TV) white spaces. In HOLLAND, O.; BOGUCKA, H.; MEDEISIS, A. - Opportunistic spectrum sharing and white space access: the practical reality. Hoboken: John Wiley & Sons. ISBN 9781118893746. p. 605-6309781118893746http://hdl.handle.net/10400.11/5487This chapter provides an overview on European Telecommunications Standards Institute (ETSI) activities related to opportunistic spectrum sharing technology with a specific focus on (TV) white spaces. Key use cases are outlined and a novel approach for a coordinated and an uncoordinated approach for accessing the spectrum resource is given. A spectrum coordinator is indeed introduced in order to handle resource management. Furthermore, database system design and inter-database communication solutions are discussed as they are introduced by ETSI. Finally, various sensing mechanisms are detailed, which allow to monitor the radio environment and to feed decision-making components correspondingly.eng(TV) white spacesCognitive radio systems (CRSs)ETSI architectureOpportunistic spectrum sharingPriority accessQuality of service (QoS)book part10.1002/9781119057246