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21.
公开(公告)号:KR1020070094442A
公开(公告)日:2007-09-20
申请号:KR1020060103696
申请日:2006-10-24
Applicant: 삼성전자주식회사
CPC classification number: H04B7/0417 , H04B7/063 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04B7/0645 , H04B7/0647 , H04B7/0663 , H04L1/0026 , H04L1/003 , H04L5/0023 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802 , H04B7/0452 , H04B7/0617
Abstract: A method for transmitting/receiving feedback information in a multi-antenna system supporting multiple users and a feedback system supporting the same are provided to improve performance of a closed-loop multi-antenna system by effectively allocating resources according to minimum feedback information. Receiving devices(120-1-120-N) determine a feedback protocol scenario defined according to a communication environment desired to be used among multiple feedback protocol scenarios, obtain feedback information requested by the desired communication environment, and transmit the obtained feedback information according to the determined feedback protocol scenario. A transmission device(110) determines a feedback protocol scenario defined according to the communication environment desired to be used among the multiple feedback protocol scenarios, and receives feedback information according to the determined feedback protocol scenario.
Abstract translation: 提供一种用于在支持多个用户的多天线系统中发送/接收反馈信息的方法以及支持多个用户的反馈系统,以通过根据最小反馈信息有效地分配资源来提高闭环多天线系统的性能。 接收设备(120-1-120-N)确定根据多个反馈协议场景中期望使用的通信环境定义的反馈协议场景,获得所需通信环境请求的反馈信息,并根据 确定的反馈协议场景。 传输设备(110)根据所述多个反馈协议场景中期望使用的通信环境确定反馈协议场景,并根据所确定的反馈协议场景接收反馈信息。
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公开(公告)号:KR1020070046755A
公开(公告)日:2007-05-03
申请号:KR1020060106047
申请日:2006-10-31
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
CPC classification number: H04B7/0452 , H04B7/0417 , H04B7/0632 , H04B7/0643 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/06 , H04L25/03343 , H04L2025/03426
Abstract: 본 발명은 다중입력 다중출력(MIMO: Multiple-Input Multiple-Out) 방식의 통신 시스템에서 데이터 전송 방법 및 시스템에 관한 것이다. 이를 위해 본 발명은, 통신 시스템에서 데이터를 전송하는 방법에 있어서, 수신기가 송신기와 형성된 채널의 모든 프리 코딩 매트릭스에 대해 프리 코딩 매트릭스의 각 열(colum)에 해당하는 서브스트림들의 개수를 결정하고, 상기 결정된 서브스트림들의 개수에 상응한 서브스트림 조합에 대해 채널 상태를 측정하는 과정과, 상기 모든 프리 코딩 매트릭스들에서 데이터 전송시 사용된 서브스트림을 나타내는 안테나 조합과 상기 서브스트림 조합에 대해 채널 상태를 측정한 후 상기 측정한 채널 상태에 상응한 데이터를 상기 송신기로 전송하는 과정을 포함한다.
다중입력 다중출력, 송신 다이버시티, 빔포밍, 프리 코딩 매트릭스, 서브스트림-
公开(公告)号:KR1020060135162A
公开(公告)日:2006-12-29
申请号:KR1020050054878
申请日:2005-06-24
IPC: H04B7/04
CPC classification number: H04B7/0632 , H04B7/0452 , H04B7/0617
Abstract: A method for selecting an active user in zero forcing beamforming algorithm is provided to select a terminal, which has the largest channel capacity, as a transmission object terminal by receiving channel capacity information of remaining terminals except transmission object terminals previously selected until the number of terminals currently selected(i) becomes equal to a predetermined number(N) if (i) is different from (N), thereby reducing process complexity without degradation and ensuring service quality for a user by being embodied with proportional fair scheduling algorithm. A method for selecting a transmission object terminal comprises the following steps of: receiving channel capacity information of each terminal from total terminals(K)(S202); selecting a terminal, which has the largest channel capacity, as an initial transmission object terminal(S203); determining whether the number of terminals currently selected(i) is the same as a predetermined number(N)(S204); and receiving channel capacity information of remaining terminals except transmission object terminals previously selected until (i) becomes equal to (N) if (i) is different from (N) and selecting a terminal, which has the largest channel capacity, as a transmission object terminal(S207).
Abstract translation: 提供了一种用于选择零强制波束形成算法中的活动用户的方法,以通过接收除了先前选择的传输对象终端之外的剩余终端的信道容量信息来选择具有最大信道容量的终端作为传输对象终端,直到终端数 如果(i)不同于(N),则当前选择(i)变得等于预定数量(N),从而通过以比例公平调度算法实现来降低处理复杂度而不降级并确保用户的服务质量。 一种用于选择传输对象终端的方法包括以下步骤:从总终端(K)接收每个终端的信道容量信息(S202); 选择具有最大信道容量的终端作为初始传输对象终端(S203); 确定当前选择的终端的数量(i)是否与预定数量(N)相同(S204); 以及接收除了先前选择的传输对象终端之外的剩余终端的信道容量信息,直到(i)等于(N)如果(i)不同于(N)并且选择具有最大信道容量的终端作为传输对象 终端(S207)。
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