Nova Patents
EP4297356A2

Method and device for transmitting data

Abstract

A method and a device for receiving transmitting data in in a wireless local area network are provided. The device receives a physical layer protocol data unit (PPDU) from a station over a transmission bandwidth and determines whether the station is a member of a basic service set (BSS) managed by the device based on the PPDU. When the PPDU is a multi-user (MU)-PPDU, the AP determines that the station is not a member of the BSS managed by the AP. Such MU-PPDU includes a first signal field and a second signal field, the first signal field having bandwidth information indicating the transmission bandwidth, the second signal field having user-specific information with allocation for orthogonal frequency division multiple access (OFDMA) transmission.

EP4297356A2, drawing sheet 1
Sheet 1 of 50

Term

8.8 yearsto projected expiry

Projected expiry 26 June 2035, counted from filing; an application has no term until it is granted.

  1. Priority
  2. Filed
  3. Published
  4. Today
  5. Projected expiry

13 claims: 2 independent, 11 dependent

  1. 1
    A wireless device associated with a wireless network, the wireless device comprising:one or more memories;and one or more processors coupled to the one or more memories, the one or more processors configured to cause: generating a plurality of legacy fields and a plurality of non-legacy fields to form a frame, wherein the non-legacy fields comprise a first signal field, a second signal field and a data field, the first signal field comprising a bandwidth subfield to indicate an operating bandwidth of the frame and the operating bandwidth being divided into two or more 20MHz subchannels, the second signal field comprising user-specific information required to receive the frame, applying a first phase rotation value to each 20MHz subchannel of the first signal field, wherein the first phase rotation value is same for all subcarriers within a respective 20 MHz subchannel of the first signal field, applying a second phase rotation value to each 20MHz subchannel of the second signal field, wherein the second phase rotation value varies based on a group of subcarriers within a respective 20 MHz subchannel of the second signal field, and transmitting the frame to one or more stations via the wireless network.
  2. 8
    A method performed by a wireless device associated with a wireless network, the method comprising:receiving, through the wireless network, a frame comprising a plurality of legacy fields and a plurality of non-legacy fields, wherein the non-legacy fields comprise a first signal field, a second signal field and a data field, decoding the first signal field to obtain an operating bandwidth of the frame, the operating bandwidth being divided into two or more 20MHz subchannels, wherein each 20MHz subchannel of the first signal field is phase-rated by a first phase rotation value, the first phase rotation value being same for all subcarriers within a respective 20 MHz subchannel of the first signal field, decoding the second signal field to obtain user-specific information required to the wireless device to decode the frame, wherein each 20MHz subchannel of the second signal field is phase-rotated by a second phase rotation value, the second phase rotation value varying based on a group of subcarriers within a respective 20 MHz subchannel of the second signal field, and decoding the data field using the first signal field and the second signal field.
Independent claims2