公开(公告)号：EP2506450A4

公开(公告)日：2012-11-07

申请号：EP10833555

申请日：2010-11-24

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM YUN-JOO ,  LEE JAE-SEUNG ,  LEE SOK-KYU

IPC: H04B7/04 ,  H04W4/08 ,  H04W8/18

CPC classification number: H04B7/0452 ,  H04W4/08 ,  H04W8/186 ,  H04W84/12

Abstract: The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multiuser based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer.

公开(公告)号：EP2547001A4

公开(公告)日：2013-03-06

申请号：EP11753656

申请日：2011-03-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK JAEWOO ,  OH JONG-EE ,  LEE IL-GU ,  LEE SOK-KYU ,  CHEONG MINHO ,  CHOI JEEYON ,  LEE JAE-SEUNG ,  KIM YUN-JOO

IPC: H04B7/04 ,  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.

Abstract translation: 本发明涉及一种收发数据的方法和装置。 根据本发明的一个实施例，发送终端在MIMO系统中向接收终端发送数据的方法包括以下步骤：生成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，正在发送的帧的末尾被准确地通知给接收终端，由此在接收终端处以更高效的方式解码帧。

公开(公告)号：EP2506451A4

公开(公告)日：2013-06-05

申请号：EP10833558

申请日：2010-11-24

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM YUN-JOO ,  LEE JAE-SEUNG ,  LEE SOK-KYU

IPC: H04B7/04 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18

CPC classification number: H04B7/0452 ,  H04L1/06 ,  H04L1/1685 ,  H04L1/1848

Abstract: The present invention relates to a method for recovering a frame that failed to be transmitted to a plurality of wireless terminals by using a group number in a MU-MIMO (Multi-User Multiple Input Multiple Output) based wireless communication system. Following the transmission of a frame that requests for a response including group control information to the plurality of wireless terminals, if a response frame is not normally received from a particular wireless terminal, a request frame is transmitted to the wireless terminal that has failed to receive the response frame as a destination, after a period of time for receiving the response frame from each of the plurality of wireless terminals that consists of a group. In another embodiment of the present invention, if the response frame is not normally received from a particular wireless terminal, a request frame is transmitted to wireless terminals starting from the wireless terminal that has failed to receive the response frame down to the last wireless terminal, in accordance with the transmission order of the response frame.