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    • 81. 发明公开
    • 인지 무선 시스템에서의 스펙트럼 센싱 방법, 전송휴지기간배치 방법, 이를 위한 단말, 기지국 및 슈퍼프레임 구조
    • 用于感应无线电系统中的光谱和安装周期的方法,客户设备设备,基站和使用其的超级结构
    • KR1020070082039A
    • 2007-08-20
    • KR1020070014976
    • 2007-02-13
    • 한국전자통신연구원
    • 강법주고광진황성현송명선김창주
    • H04L12/28H04L12/14
    • H04W72/085H04W16/14
    • A method for sensing spectrum and arranging quiet period in a cognitive radio system, a CPE(Customer Premise Equipment), a base station and a superframe structure using the same are provided to increase the reliability of detection regarding whether an incumbent user appears in his/her frequency channel. A base station(800) using a method for sensing spectrum and arranging quiet period in a cognitive radio system comprises a transceiver(802) and a sensor(804). The base station(800) constructs a WRAN(Wireless Regional Area Network) with the first CPE(810) and the second CPE(820). The first CPE(810) includes a transceiver(812) and a sensor(814). The second CPE(820) includes a transceiver(822) and a sensor(824). The transceiver(802) communicates with the first CPE(810) via the first frequency channel CH_1, communicates with the second CPE(820) via the second frequency channel CH_2, and does not perform transmission via the first or the second frequency channel CH_1 or CH_2 during a QP of the base station(800). The transceiver(802) may transmit information on the assignment of QPs of the first and second frequency channels CH_1 and CH_2 belonging to an active set to the first CPE(810) and the second CPE(820). The transceiver(802) may receive each result obtained by performing spectrum sensing for the first CPE(810) and the second CPE(820) from the first CPE(810) and the second CPE(820). Therefore, the base station(800) can utilize a result obtained by performing spectrum sensing and the results obtained by performing spectrum sensing for the first CPE(810) and the second CPE(820), thereby performing more reliable spectrum sensing. The sensor(804) performs spectrum sensing for the first frequency channel CH_1 during a QP of the first frequency channel CH_1, converts the first frequency channel CH_1 into the second frequency channel CH_2 before a QP of the second frequency channel CH_2, and performs spectrum sensing for the second frequency channel CH_2 during a QP of the second frequency channel CH_2.
    • 提供了一种用于在认知无线电系统中感测频谱并安排安静周期的方法,CPE(客户端设备),基站和使用其的超帧结构来提高检测的可靠性,以确定现任用户是否出现在他/ 她的频道。 使用感测频谱的方法和在认知无线电系统中安排安静时段的基站(800)包括收发机(802)和传感器(804)。 基站(800)利用第一CPE(810)和第二CPE(820)构建WRAN(无线区域网络)。 第一CPE(810)包括收发器(812)和传感器(814)。 第二CPE(820)包括收发器(822)和传感器(824)。 收发机802经由第一频道CH_1与第一CPE(810)进行通信,经由第二频道CH_2与第二CPE(820)进行通信,不经由第一或第二频道CH_1或 CH_2在基站(800)的QP期间。 收发器(802)可以将属于有效集合的第一和第二频道CH_1和CH_2的QP的分配信息发送到第一CPE(810)和第二CPE(820)。 收发器(802)可以从第一CPE(810)和第二CPE(820)接收对第一CPE(810)和第二CPE(820)执行频谱感测而获得的每个结果。 因此,基站(800)可以利用通过对第一CPE(810)和第二CPE(820)执行频谱感测而获得的结果和通过执行频谱感测获得的结果,由此执行更可靠的频谱感测。 传感器(804)在第一频道CH_1的QP期间对第一频道CH_1进行频谱感测,在第二频道CH_2的QP之前将第一频道CH_1转换为第二频道CH_2,并执行频谱感测 在第二频道CH_2的QP期间用于第二频道CH_2。