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    • 4. 发明公开
    • 무선 인지 시스템에서 협력 스펙트럼 센싱 방법 및 장치
    • 认知无线电系统中合作频谱感知的装置和方法
    • KR1020110060455A
    • 2011-06-08
    • KR1020090117049
    • 2009-11-30
    • 서울대학교산학협력단
    • 이용환오동찬
    • H04W16/14
    • H04W16/14H04W16/10
    • PURPOSE: A cooperative spectrum sensing method and apparatus in a CR(Cognitive Radio) system are provided to adaptively change the number of secondary users who participate in cooperative sensing according to the channel environment of the secondary user. CONSTITUTION: A secondary user transmits an UL(UpLink) sounding signal(501). The secondary user receives information about a number of secondary users who participate in cooperative sensing(503). The secondary user recognizes whether the secondary user is selected(505). In case the secondary user is selected, the secondary user performs an inspection function, detection of threshold, and sensing(507). The secondary user reports a sensing result to a secondary BS(Base Station)(509).
    • 目的:提供CR(认知无线电)系统中的协作频谱感知方法和装置,根据二级用户的信道环境自适应地改变参与协作感知的二级用户的数量。 构成:辅助用户发送UL(UpLink)探测信号(501)。 辅助用户接收关于参与协作感测的次要用户数量的信息(503)。 辅助用户识别是否选择了次要用户(505)。 在选择次要用户的情况下,次要用户执行检查功能,阈值检测和感测(507)。 次要用户将感测结果报告给辅助BS(基站)(509)。