公开(公告)号：US20160043787A1

公开(公告)日：2016-02-11

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: H04B7/04 ,  H04W72/04 ,  H04W16/28

CPC classification number: H04W16/28 ,  H04B7/0617 ,  H04B7/0626 ,  H04W72/0453 ,  H04W72/085

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.

Abstract translation: 公开了使用选择波束成形的帧发送方法和通信装置来执行帧发送方法。 通信装置可以基于将用于通信的多个子载波分类为多个频率单位的分类信息来确定波束形成矩阵，可以将长训练场（LTF）序列映射到波束成形矩阵，并且发送波束成形训练 包括映射的LTF序列的多个（BF-T）帧可以从接收到BF-T帧的多个站接收基于BF-T帧的接收强度生成的反馈信息，并且可以 基于所述反馈信息，将频率单位分配给要发送到所述多个站的数据帧，并且使用所分配的频率单位来发送所述数据帧。 BF-T帧的接收强度可以针对每个频率单元在每个站点确定。

公开(公告)号：US20150358961A1

公开(公告)日：2015-12-10

申请号：US14734733

申请日：2015-06-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jee Yon CHOI ,  Jae Woo PARK ,  Yu Ro LEE ,  Jae Seung LEE ,  IL Gyu KIM ,  Seung Chan BANG

IPC: H04W72/04

CPC classification number: H04W72/12 ,  H04W84/12

Abstract: Provided is a data frame transmission method of a communication apparatus, the method including determining whether a transmission allowance condition of a data frame of the communication apparatus is satisfied when another communication apparatus occupies a channel, verifying an end time of another data frame transmitted by the other communication apparatus based on a result of the determining, and transmitting the data frame based on the verified end time.

Abstract translation: 提供一种通信装置的数据帧发送方法，所述方法包括：当另一通信装置占用信道时，确定通信装置的数据帧的传输容许条件是否满足，验证由所述通信装置发送的另一数据帧的结束时间 基于确定结果的其他通信装置，并且基于经验证的结束时间发送数据帧。

公开(公告)号：US20150189497A1

公开(公告)日：2015-07-02

申请号：US14479134

申请日：2014-09-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yu Ro LEE ,  Chang Wahn YU ,  Hee Soo LEE ,  Sok Kyu LEE

IPC: H04W8/18 ,  H04W64/00

CPC classification number: H04W8/186 ,  H04W64/00 ,  H04W64/003

Abstract: Provided is a user identification method and apparatus in a multi-user wireless communication system, the method including generating first identification information by reflecting masking identification (ID) information to group ID information associated with a received signal, generating second identification information based on a correspondence relationship between the generated first identification information and possible group ID (PGU) information transferred from an available access point (AP), and determining a user position based on the generated second identification information.

Abstract translation: 提供了一种多用户无线通信系统中的用户识别方法和装置，所述方法包括：通过将屏蔽识别（ID）信息反映到与接收信号相关联的组ID信息来产生第一识别信息，基于对应关系产生第二识别信息 所生成的第一识别信息与从可用接入点（AP）传送的可能组ID（PGU）信息之间的关系，以及基于所生成的第二标识信息来确定用户位置。