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    • 1. 发明授权
    • Packet transmission/reception method and apparatus in wireless communication system
    • 无线通信系统中的分组发送/接收方法和装置
    • US08873461B2
    • 2014-10-28
    • US13025950
    • 2011-02-11
    • Yun-Joo KimJong-Ee OhSok-Kyu Lee
    • Yun-Joo KimJong-Ee OhSok-Kyu Lee
    • H04W80/04H04W88/06H04W88/08H04W28/06
    • H04W28/065
    • A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets which are to be transmitted to the respective users; and simultaneously transmitting the generated packets to the respective users. Each of the packets contains information on the position of a symbol to which a tail field of the packet belongs, and the information on the position of the symbol to which the tail field belongs includes at least one of the maximum symbol number of the packet, the symbol number of transmission data of the packet, positional information of a last aggregated MAC protocol data unit (A-MPDU) subframe, and positional information of a null delimiter.
    • 一种用于在无线通信系统中同时向两个或多个用户发送具有不同长度的分组的方法包括:生成要发送给各个用户的分组; 同时将生成的分组发送给各个用户。 每个分组包含关于分组的尾部字段所属的符号的位置的信息,并且关于尾部字段所属的符号的位置的信息包括分组的最大符号号中的至少一个, 分组的发送数据的符号数,最后聚合的MAC协议数据单元(A-MPDU)子帧的位置信息和空分隔符的位置信息。
    • 5. 发明授权
    • MIMO antenna receiving apparatus and receiving method
    • MIMO天线接收装置和接收方法
    • US08331473B2
    • 2012-12-11
    • US12238082
    • 2008-09-25
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • H04B7/02
    • H04B7/0417H04L1/0631
    • Provided is a reception apparatus and method of a Multiple Input Multiple Output (MIMO) system that receives a plurality of different data streams in a multiple cell environment. The reception apparatus for receiving a plurality of different data streams in a multiple input multiple output (MIMO) antenna system includes a data stream detector for detecting each data stream by removing interference between the different data streams while maintaining channel information; and a cochannel interference (CCI) remover for removing cochannel interference from each data stream detected in the data stream detector. The present invention can remove cochannel interference and increase channel capacity to thereby acquire both diversity gain and multiplexing gain.
    • 提供了一种在多小区环境中接收多个不同数据流的多输入多输出(MIMO)系统的接收装置和方法。 用于在多输入多输出(MIMO)天线系统中接收多个不同数据流的接收装置包括:数据流检测器,用于通过在保持信道信息的同时消除不同数据流之间的干扰来检测每个数据流; 以及用于从数据流检测器中检测到的每个数据流去除同信道干扰的同信道干扰(CCI)去除器。 本发明可以消除同信道干扰并增加信道容量,从而获得分集增益和复用增益。
    • 6. 发明申请
    • APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN COMMUNICATION SYSTEM
    • 用于在通信系统中发送/接收数据的装置和方法
    • US20120263126A1
    • 2012-10-18
    • US13446448
    • 2012-04-13
    • Jee-Yon CHOIJae-Seung LeeJong-Ee OhSok-Kyu Lee
    • Jee-Yon CHOIJae-Seung LeeJong-Ee OhSok-Kyu Lee
    • H04W72/04
    • H04B7/0617H04B7/0417H04B7/0639H04B7/0643H04W48/16H04W84/12
    • Disclosed are an apparatus and a method for transmitting/receiving data by acquiring channel information of a terminal receiving data in a communication system providing services to users through beamforming according to a multi-input multi-output (MIMO) scheme, wherein so as to acquire channel information of the terminal for transmitting/receiving data through the beamforming according to the MIMO scheme, a null data packet announcement (NDPA) frame and a null data packet (NDP) frame are transmitted to the terminal, the beamforming frame is received from the terminal as a response of the null data packet announcement frame and the null data packet frame, and the channel information of the terminal included in the beamforming frame and the indication information on which the null data packet frame included in a control information field of the beamforming frame is normally received are checked.
    • 公开了一种通过获取通过根据多输入多输出(MIMO)方案通过波束形成向用户提供服务的通信系统中的接收数据的终端的信道信息来发送/接收数据的装置和方法,其中, 通过根据MIMO方案的波束形成发送/接收数据的终端的信道信息,空值数据分组通知(NDPA)帧和空数据分组(NDP)帧被发送到终端,波束形成帧从 终端作为空数据分组公告帧和空数据分组帧的响应,以及包括在波束成形帧中的终端的信道信息和包括在波束形成的控制信息字段中的空数据分组帧的指示信息 正常接收的帧被检查。
    • 10. 发明申请
    • METHOD OF TRANSMITTING DATA FRAME TO MULTI-USER IN WIRELESS COMMUNICATION SYSTEMS
    • 在无线通信系统中传输数据帧到多用户的方法
    • US20110222478A1
    • 2011-09-15
    • US13046423
    • 2011-03-11
    • Yu-Ro LEEYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • Yu-Ro LEEYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • H04W4/00
    • H04W72/005H04W4/08
    • Provided a method for simultaneously transmitting data frames to a plurality of STAs in a multi-user based wireless communication system. The method includes: requesting sounding or feedback for the plurality of STAs by using a first control information frame containing first group information; receiving responses to the sounding or feedback request; reconfiguring the plurality of STAs composing the first group into a plurality of second groups on the basis of the responses such that the sum of maximum transport streams of the respective STAs composing one group becomes equal to or less than the maximum number of streams transmitted by an AP; transmitting a second control information frame containing second group information on the respective second groups to the plurality of STAs composing the first group; and transmitting data frames by using the second group information.
    • 提供了一种用于在基于多用户的无线通信系统中同时向多个STA发送数据帧的方法。 该方法包括:通过使用包含第一组信息的第一控制信息帧来请求对多个STA的探测或反馈; 接收响应声音或反馈请求; 基于所述响应,将构成第一组的多个STA重新配置成多个第二组,使得构成一组的各个STA的最大传输流之和变得等于或小于由一 AP; 将包含关于各个第二组的第二组信息的第二控制信息帧发送到构成第一组的多个STA; 以及通过使用第二组信息发送数据帧。