公开(公告)号：US20190174484A1

公开(公告)日：2019-06-06

申请号：US16253292

申请日：2019-01-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yun Joo KIM ,  Jee Yon CHOI ,  Sok-Kyu LEE

IPC: H04W72/04 ,  H04W74/00 ,  H04L1/18

Abstract: The present invention relates to a method for efficient transmission of a request frame such as an RTS/CTS frame and a response frame in response to the request frame in a multi-user based wireless communication system. The method of the present invention comprises: a process where wireless terminals transmit a response frame at their own response frame transmission time through a request frame that contains information about a plurality of wireless terminals and information about the response frame transmission time of the respective wireless terminals; a process where the respective wireless terminals transmit a response frame according to a token scheme such that the response frame is transmitted to a final access point; and a process where only a representative wireless terminal selected depending on a given wireless environment receives the response frame.

公开(公告)号：US20160043785A1

公开(公告)日：2016-02-11

申请号：US14886474

申请日：2015-10-19

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: H04B7/04 ,  H04L27/20 ,  H04L1/00

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.