Newracom, Inc.

Hyoungjin Kwon

Minho Cheong

Jongee Oh

Hyungu Park

Yongjin Kwon

Ilgu Lee

Jeehoon Kim

Heejung Yu

Jeongchul Shin

An operation method of a station in a wireless local area network (WLAN) is disclosed. An operation method of a first station comprises generating a high efficiency (HE) preamble including scheduling information of a plurality of reception stations; and generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including a legacy preamble, the HE preamble, and a payload having data units to be transmitted to the plurality of reception stations. Therefore, a performance of WLAN may be enhanced.

Operation method of station in wireless local area network

Disclosed are multi-user transmission methods in a wireless local access network (WLAN). An operation method performed in a first station may comprise generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including a legacy preamble, a high efficiency (HE) preamble, and a payload; and transmitting the PPDU. Also, the HE preamble may include a HE signal A (HE-SIG-A) field, a HE signal B (HE-SIG-B) field, a HE short training field (HE-STF), and a HE long training field (HE-LTF), and the HE-SIG-A field may include information indicating the number of symbols of the HE-SIG-B field. Accordingly, a performance of the WLAN may be enhanced.

Transmission method for multi user in wireless local area network

In a WLAN, a device sets a first NAV to a bandwidth used by a signal from a second device. The device selects a channel that does not correspond to the bandwidth from among a plurality of channels when a predetermined condition is satisfied. The predetermined condition includes a condition that the first NAV is set. The device transmits a first frame on the selected channel.

Transmission method

A method of transmitting a frame is provided by a first device in a WLAN. The first device transmits a first frame including bandwidth information of a first channel to a second device and performs a communication with the second device through the first channel. The first channel is selected from among a plurality of channels into which an entire channel width is divided. Discontinuous channels are capable of being selected as the first channel from among the plurality of channels.

Frame transmitting method and frame receiving method

In a WLAN, a device receives a frame where a symbol is attached to a previous version frame, the symbol including BSS information. The device determines whether the device belongs to a BSS of the frame based on the BSS information.

Method and apparatus for transmitting and receiving frame

An operation method of station in wireless local area network is provided. The operation method includes generating a legacy preamble, generating a high efficiency (HE) preamble including at least one HE-signal (HE-SIG) field, a HE-short training field (HE-STF), and at least one HE-long training field (HE-LTF), and generating a HE physical layer convergence procedure protocol data unit (HE-PPDU) including the legacy preamble and the HE preamble. Therefore, performance of WLAN can be enhanced.

Wireless local area network communications with varying subcarrier spacings

An interleaving method by a transmitting device is provided. The transmitting device divides a bandwidth into a plurality of bands, and divides an interleaver matrix into a plurality of matrices corresponding to the plurality of bands respectively in a predetermined direction. Next, the transmitting device arranges data of a user assigned to a corresponding band among the plurality of bands in each matrix of the plurality of matrices.

Growing community of inventors

Daejeon, South Korea

Hyoungjin Kwon