公开(公告)号：KR1020080086033A

公开(公告)日：2008-09-25

申请号：KR1020070027603

申请日：2007-03-21

Applicant: 삼성전자주식회사

Inventor： 엘리자베스디카르발호 ,  페타르포포브스키 ,  지핑 ,  마자레세 ,  이학주 ,  조영권

IPC: H04L1/18 ,  H04B7/04 ,  H04L1/16

CPC classification number: H04L1/1812 ,  H04B7/061 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/1854 ,  H04L1/189

Abstract: An automatic repeat request apparatus in a multi input multi output system, and a method thereof are provided to improve a performance by selecting an optimum antenna and performing a re-transmission based on the channel state information. An automatic repeat request apparatus in a multi input multi output system includes a communication module(410), a control unit(420), and a storage unit(430). The communication module has a plurality of antennas for communicating with a different node. The control unit receives packets transmitted from a transmitter through the communication module. If an error occurs in one packet of the packets, and the control unit receives the error packet from a weakest antenna under a partial multiplexing mode, the control unit calculates the number of first re-transmissions of a minimum number for calculating a signal to noise ratio within an AMC(Adaptive Modulation and Coding) level range. If the number of first re-transmissions is larger than a threshold value, the control unit requests the re-transmission to the transmitter through the strongest antenna under the partial multiplexing mode. If the number of first re-transmissions is smaller than the threshold value, the control unit performs the re-transmission through the weakest antenna under the partial multiplexing mode. The storage unit provides a necessary space and a storage space for an operation of the control unit.

Abstract translation: 提供了一种多输入多输出系统中的自动重复请求装置及其方法，其通过选择最佳天线并基于信道状态信息执行重传来提高性能。 多输入多输出系统中的自动重复请求装置包括通信模块（410），控制单元（420）和存储单元（430）。 通信模块具有用于与不同节点进行通信的多个天线。 控制单元通过通信模块接收从发射机发送的分组。 如果分组的一个分组中出现错误，并且控制单元在部分复用模式下从最弱天线接收到错误分组，则控制单元计算用于计算信噪比的最小数量的第一重传数 AMC（自适应调制和编码）级别范围内的比例。 如果第一重新传输的数量大于阈值，则控制单元在部分多路复用模式下通过最强的天线请求发送到发射机。 如果第一重新传输的数量小于阈值，则控制单元在部分多路复用模式下通过最弱的天线执行重传。 存储单元为控制单元的操作提供必要的空间和存储空间。