Electronics and Telecommunications Research Institute

Other

Intellectual Discovery Co., Ltd.

Sok-Kyu Lee

Il-Gu Lee

Eun-Young Choi

Jong-Ee Oh

Yun-Joo Kim

Minho Cheong

Hee-Jung Yu

Yu-Ro Lee

Jeeyon Choi

Deuk-Su Lyu

Taehyun Jeon

Jung-Bo Son

Myung-Soon Kim

Min-Ho Cheong

Jae-Seung Lee

Yun Joo Kim

Jae Seung Lee

Jae Woo Park

Jee Yon Choi

Hun-Sik Kang

Hyun-Kyu Chung

Min Ho Cheong

Chanho Yoon

Jong Ee Oh

Seung-Chan Bang

Chan-Ho Yoon

Woo-Yong Lee

Yoo-Seung Song

Jee-Yon Choi

Jaewoo Park

Dae-Sik Kim

Heejung Yu

Seung-Ku Hwang

Je-Hun Lee

Hyun-Gu Park

Tae-hyun Jeon

Seung-Wook Min

In-Kyeong Choi

Kwhang-Hyun Ryu

Hyun Kyu Chung

Kyung-Hi Chang

Kwang-Soon Kim

Hun Sik Kang

Hyungu Park

Hee-Soo Lee

Seungkwon Cho

Se-hyun Park

Woo-Yong Choi

Chan Ho Yoon

Jung Bo Son

Seok Hyun Yoon

Jae-Woo Park

Seung-Kwon Cho

Yunjoo Kim

Kyoung-Ju Noh

Byung-Chan Kim

Doo-Hyun Bae

Gwan-Yeon Kim

II-Gu Lee

Kwang-soon Kim

Ilgu Lee

Kyoung-Hee Song

Yuro Lee

Kyounghee Song

Jong-Eo Oh

Jeevon Choi

Hae-Young Na

Young-Gyun Kim

Cheol-Hui Ryu

Cheol-Jung Kim

Tae-Hyun Jeon

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.

Method and apparatus for transceiving data

A method and apparatus for configuring mesh peer link and a method and apparatus for switching channel in wireless mesh network are provided. A method of configuring a mesh peer link in a wireless mesh network includes a first mesh station transmitting a mesh peering open frame to a second mesh station, and the first mesh station receiving a mesh peering confirm frame from the second mesh station in response to the mesh peering open frame, wherein the first mesh station and the second mesh station support a very high throughput (VHT), and wherein the mesh peering open frame and the mesh peering confirm frame comprise a VHT capability information element.

Method and apparatus of peer link setting, and method and apparatus of channel switching, in wireless mesh network

A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP.

Method and apparatus for controlling transmission power in WLAN system

The present invention relates to a method and apparatus for transmitting and receiving data. A data transmission method from a sender terminal to a receiver terminal in a MIMO system using a variable frequency band according to one embodiment of the present invention comprises: repeatedly generating a signal field depending on a frequency band that is applied to the transmission of a data frame; generating a data field including the data; generating a data frame including the signal field and the data field; and transmitting the data frame to the receiver terminal. The present invention is advantageous in that a signal field which is transmitted together with the data being transmitted from the sender terminal to the receiver terminal in the MIMO system can be sent more efficiently.

Method and apparatus for transmitting and receiving data in a MIMO system

A method and apparatus of accessing a channel in a wireless local area network is provided. A destination station receives a request to send (RTS) frame to allocate a network allocation vector from a source station over a first bandwidth and transmits a clear to send (CTS) frame over a second bandwidth to the source station in response to the RTS frame. The second bandwidth is dynamically determined when a first parameter has a predetermined value.

Communication method, wireless station and communication device for receving frame using certain bandwidth and spatial stream

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.

Method for transmitting control and training symbols in multi-user wireless communication system

A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member.

Method for recovering a frame that failed to be transmitted in a MU-MIMO based wireless communication system

A method for automatically detecting a packet mode in a wireless communication system supporting a multiple transmission mode includes: acquiring at least one of data rate information, packet length information and channel bandwidth information from a transmitted frame; and determining the packet mode on the basis of the phase rotation check result of a symbol transmitted after a signal field signal and at least one of the data rate information, the packet length information and the channel bandwidth information acquired from the transmitted frame.

Packet mode auto-detection in multi-mode wireless communication system, signal field transmission for the packet mode auto-detection, and gain control based on the packet mode

The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n&#x2212;1)th terminal designate the duration period of the CTS frame as '0' and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection.

Method for protecting data in a mu-mimo based wireless communication system

Growing community of inventors

Daejeon, South Korea

Sok-Kyu Lee