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    Method for transmitting frame using selective beamforming and apparatus for performing the method
    25.
    发明授权
    Method for transmitting frame using selective beamforming and apparatus for performing the method 有权

    公开(公告)号：US10237753B2

    公开(公告)日：2019-03-19

    申请号：US14817259

    申请日：2015-08-04

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Yu Ro Lee ,  Jae Woo Park ,  Jae Seung Lee ,  Jee Yon Choi ,  Il Gyu Kim ,  Seung Chan Bang

    IPC: H04W16/28 ,  H04B7/06 ,  H04W72/04 ,  H04W72/08

    Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.

    Data transmission method and apparatus
    27.
    发明授权
    Data transmission method and apparatus 有权
    数据传输方法及装置

    公开(公告)号：US09584433B2

    公开(公告)日：2017-02-28

    申请号：US14521280

    申请日：2014-10-22

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Jae Woo Park ,  Jee Yon Choi ,  Sok Kyu Lee

    IPC: H04L12/863 ,  H04W28/02 ,  H04W72/00 ,  H04W72/12 ,  H04W74/00 ,  H04W84/12

    CPC classification number: H04L47/628 ,  H04W28/0263 ,  H04W72/00 ,  H04W72/12 ,  H04W74/00 ,  H04W84/12

    Abstract: Provided is a data transmission apparatus including a queue management unit to manage at least one queue in which information associated with at least one buffer descriptor (BD) is stored, a scheduler to estimate information to be transmitted among information associated with at least one media access control (MAC) protocol data unit (MPDU) using at least one transmission bitmap (Tx bitmap), a data transmitter to read the estimated information from information associated with a BD indicated in the at least one Tx bitmap, and transmit the read information to a physical layer, and a physical layer management unit to generate information associated with a presentation protocol data unit (PPDU) based on the transmitted information, and transmit the generated information over the air, wherein the at least one BD includes information associated with the at least one MPDU.

    Abstract translation: 提供了一种包括队列管理单元的数据传输装置，用于管理至少一个队列，其中存储与至少一个缓冲器描述符（BD）相关联的信息，调度器，用于估计与至少一个媒体访问相关联的信息之间要发送的信息 控制（MAC）协议数据单元（MPDU），使用至少一个传输位图（Tx位图），数据发送器从与至少一个Tx位图中指示的BD相关联的信息读取估计信息，并将读取的信息发送到 物理层和物理层管理单元，用于基于所发送的信息生成与呈现协议数据单元（PPDU）相关联的信息，并且通过空中传送所生成的信息，其中，所述至少一个BD包括与所述信息相关联的信息 至少一个MPDU。

    Method and apparatus for transceiving data in a MIMO system
    28.
    发明授权
    Method and apparatus for transceiving data in a MIMO system 有权
    用于在MIMO系统中收发数据的方法和装置

    公开(公告)号：US09172447B2

    公开(公告)日：2015-10-27

    申请号：US14687711

    申请日：2015-04-15

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Jae Woo Park ,  Jong Ee Oh ,  Il-Gu Lee ,  Sok-kyu Lee ,  Min Ho Cheong ,  Jee Yon Choi ,  Jae Seung Lee ,  Yun Joo Kim

    IPC: H04L27/20 ,  H04B7/04 ,  H04W84/12

    CPC classification number: H04B7/0452 ,  H04B7/0413 ,  H04L1/0003 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/0075 ,  H04L1/0083 ,  H04L1/08 ,  H04L27/18 ,  H04L27/20 ,  H04L69/22 ,  H04L69/323 ,  H04Q2213/13215 ,  H04W84/12

    Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.

    Abstract translation: 本发明涉及用于收发数据的方法和装置。 根据本发明的一个实施例的发送终端向MIMO系统中的接收终端发送数据的方法包括以下步骤：产生包含数据的数据字段; 生成包含关于数据字段的信息的信号字段; 生成包含数据字段和信号字段的数据帧; 并将数据帧发送到接收终端。 根据本发明，在使用MIMO发送帧的通信系统中，正在发送的帧的结束被准确地通知给接收终端，从而在接收终端以更有效的方式对帧进行解码。

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