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    Apparatus and method for allocating channel in communication system
    21.
    发明授权
    Apparatus and method for allocating channel in communication system 有权
    通信系统中信道分配的装置和方法

    公开(公告)号：US09167590B2

    公开(公告)日：2015-10-20

    申请号：US13717622

    申请日：2012-12-17

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Min-Ho Cheong ,  Sok-Kyu Lee

    IPC: H04L12/26 ,  H04J3/14 ,  H04W72/08 ,  H04W16/14 ,  H04W72/04

    CPC classification number: H04W72/085 ,  H04W16/14 ,  H04W72/04

    Abstract: A channel allocation apparatus in a communication system includes: a measuring unit configured to measure clear channel assessments (CCA) of a plurality of stations (STAs) included in the communication system; a checking unit configured to compare the measured CCAs to preset reference CCA, and check fairness and unfairness in the STAs; and an allocating unit configured to change and allocate channels allocated to STAs corresponding to unfairness, according to the measured CCA and the reference CCA.

    Abstract translation: 通信系统中的信道分配装置包括：测量单元，被配置为测量包括在通信系统中的多个站（STA）的清除信道评估（CCA）; 检查单元，被配置为将所测量的CCA与预设的参考CCA进行比较，并且检查STA中的公平性和不公平性; 以及分配单元，被配置为根据所测量的CCA和参考CCA来改变和分配分配给不对称的STA的信道。

    Apparatus and method for transmitting/receiving data in communication system
    22.
    发明授权
    Apparatus and method for transmitting/receiving data in communication system 有权
    在通信系统中发送/接收数据的装置和方法

    公开(公告)号：US09113313B2

    公开(公告)日：2015-08-18

    申请号：US13712895

    申请日：2012-12-12

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Minho Cheong ,  Sok-Kyu Lee

    IPC: H04W4/00 ,  H04W4/08 ,  H04B7/02 ,  H04W74/04

    CPC classification number: H04W4/08 ,  H04B7/024 ,  H04B7/026 ,  H04W74/04

    Abstract: Disclosed is a method for allowing a terminal to transmit/receive data using a multi user-multi input multi output (MU-MIMO) scheme in a communication system, the method including: receiving group information of terminals capable of transmitting/receiving data using the MU-MIMO scheme from an access point (AP); transmitting the group information of the terminals and group information of candidate terminals capable of transmitting/receiving data using the MU-MIMO based on the group information of the terminals to the candidate terminals, respectively; and transmitting/receiving data to/from the candidate terminals using the MU-MIMO scheme in response to the group information of the candidate terminals.

    Abstract translation: 公开了一种允许终端在通信系统中使用多用户多输入多输出（MU-MIMO）方案来发送/接收数据的方法，所述方法包括：使用所述终端能够发送/接收数据的终端的组信息 来自接入点（AP）的MU-MIMO方案; 基于终端的组信息，分别向候选终端发送能够使用MU-MIMO发送/接收数据的候选终端的组信息和组信息; 以及响应于候选终端的组信息，使用MU-MIMO方案向候选终端发送/接收数据。

    Apparatus and method for transmitting/receiving data in communication system
    23.
    发明授权
    Apparatus and method for transmitting/receiving data in communication system 有权
    在通信系统中发送/接收数据的装置和方法

    公开(公告)号：US09036598B2

    公开(公告)日：2015-05-19

    申请号：US13662316

    申请日：2012-10-26

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Hee-Jung Yu ,  Min-Ho Cheong ,  Sok-Kyu Lee

    IPC: H04W4/00 ,  H04W72/08 ,  H04W74/02

    CPC classification number: H04W72/0446 ,  H04W72/0406 ,  H04W72/08 ,  H04W74/02

    Abstract: A data transmission apparatus in a communication system includes a reception unit configured to receive terminal information from a plurality of terminals through a new frequency band for transmission and reception of data between the plurality of terminals and an AP (access point); a determination unit configured to determine access timing of the terminals to the AP by using the terminal information, and generate terminal access information including information on the access timing; and a transmission unit configured to transmit the terminal access information and beacon frames to the terminals, wherein the terminals access the AP and transmit data frames to the AP, at the access timing based on the beacon frames.

    Abstract translation: 通信系统中的数据发送装置包括：接收单元，被配置为通过新的频带从多个终端接收终端信息，用于在所述多个终端与AP（接入点）之间发送和接收数据; 确定单元，被配置为通过使用终端信息来确定终端到AP的接入定时，并且生成包括关于接入定时的信息的终端接入信息; 以及发送单元，被配置为向终端发送终端接入信息和信标帧，其中终端基于信标帧在接入定时接入AP并向AP发送数据帧。

    Apparatus and method for transmitting/receiving data in communication system
    24.
    发明授权
    Apparatus and method for transmitting/receiving data in communication system 有权
    在通信系统中发送/接收数据的装置和方法

    公开(公告)号：US09002981B2

    公开(公告)日：2015-04-07

    申请号：US13654362

    申请日：2012-10-17

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Hee-Jung Yu ,  Min-Ho Cheong ,  Sok-Kyu Lee

    IPC: H04L29/08 ,  H04W48/08 ,  H04W48/10 ,  H04W72/04

    CPC classification number: H04L67/10 ,  H04W48/08 ,  H04W48/10 ,  H04W72/042

    Abstract: A data transmission apparatus in a communication system includes a reception unit configured to receive terminal information from a plurality of terminals through a new frequency band for transmitting and receiving data between the plurality of terminals and one AP (access point); a verification unit configured to verify the terminal information, group the terminals into terminal groups by using the terminal information, and verify virtual APs which respectively correspond to the terminal groups, in the AP; and a transmission unit configured to transmit beacon frames in the virtual APs, to the terminals included in the terminal groups, wherein the beacon frames include beacon interval information, beacon duration information, beacon offset information, and terminal group information.

    Abstract translation: 通信系统中的数据发送装置包括：接收单元，被配置为通过用于在所述多个终端与一个AP（接入点）之间发送和接收数据的新频带从多个终端接收终端信息; 被配置为验证终端信息的验证单元，通过使用终端信息将终端分组成终端组，并且在AP中验证分别对应于终端组的虚拟AP; 以及传输单元，被配置为将虚拟AP中的信标帧发送到包括在终端组中的终端，其中信标帧包括信标间隔信息，信标持续时间信息，信标偏移信息和终端组信息。

    METHOD FOR TRANSMITTING CONTROL AND TRAINING SYMBOLS IN MULTI-USER WIRELESS COMMUNICATION SYSTEM
    27.
    发明申请
    METHOD FOR TRANSMITTING CONTROL AND TRAINING SYMBOLS IN MULTI-USER WIRELESS COMMUNICATION SYSTEM 有权

    公开(公告)号：US20210266888A1

    公开(公告)日：2021-08-26

    申请号：US17314067

    申请日：2021-05-07

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Yu-Ro Lee ,  Jung-Bo Son ,  Sok-Kyu Lee

    IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04W48/08 ,  H04B7/0452 ,  H04L1/06

    Abstract: The present invention relates to a method and an apparatus for transmitting control and training symbols to improve transmission efficiency in a multi-user wireless communication system. The method for transmitting the control and training symbols in the multi-user wireless communication system according to one embodiment of the present invention comprises the steps of: determining whether a required transmission rate of each data can be satisfied through channel estimation in each of terminals when different data are simultaneously transmitted to each of the terminals; and transmitting a data frame to each of the terminals, the data frame being composed to discriminate the control and training symbols in each of the terminals using a combination of time, frequency, and code area when the required transmission rate of each data is not satisfied according to the determined result.

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