Newracom, Inc.

Jongee Oh

Hyungu Park

Ilgu Lee

Yongjin Kwon

Hyoungjin Kwon

Minho Cheong

Jeongchul Shin

Inkyeong Choi

Kyeongpyo Kim

Dae Kyun Lee

Jeehoon Kim

Changwahn Yu

Youngha Lee

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

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

A frame transmitting method by a device in a wireless communication network is provided. The device generates a symbol using a part of a plurality of resource units having a different number of tones and transmits a frame including the symbol. A length of symbol duration excluding a guard interval in the symbol is 12.8 &#x3bc;s. The plurality of resource units includes a first resource unit having 26 tones and a second resource unit having 52 tones. Two tones in the 26 tones of the first resource unit are used as pilot tones, and four tones in the 52 tones of the second resource unit are used as pilot tones.

Frame transmitting method and frame receiving method

A sounding method by a receiving device is provided. The receiving device receives an NDPA frame from a transmitting device, and then receives an NDP frame from the transmitting device. After receiving the NDP frame, the receiving device transmits to the transmitting device a feedback frame including subchannel information measured on a subchannel that is allocated to the first receiving device among a plurality of subchannels into which a predetermined band is divided.

Sounding method

In a WLAN, a device generates a short training field and a long training field following the short training field. The device generates a first signal field following the long training field, and the first signal field includes a mode field for indicating a transmission mode of a frame to be transmitted and a check bit for protecting at least the mode field. The device transmits the frame including the short training field, the long training field, and the first signal field.

Method for transmitting frame and method for detecting transmission mode

A signaling method is provided by a device in a WLAN. The device includes signaling information in an address field, generates a MAC frame including the address field, and transmits a PHY frame including a data field into which the MAC frame is inserted.

Signaling method

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.

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Irvine, CA, United States of America

Jongee Oh