Method for performing communication in wireless lan system and wireless terminal using same

Patent metadata

Field	Value
Publication number	US-2020344690-A1
Application number	US-201916962115-A
Country	US
Kind code	A1
Filing date	Jan 14, 2019
Priority date	Jan 14, 2018
Publication date	Oct 29, 2020
Grant date	—

Abstract

A method for communication in a wireless LAN system according to an embodiment includes: receiving, by a first wireless terminal including a main radio module and a WUR module for receiving a wake-up packet modulated based on OOK scheme, the wake-up packet from a second wireless terminal based on the WUR module, wherein the wake-up packet includes first information indicating that a broadcast scheme is applied to the wake-up packet and second information for indicating the presence of a group addressed frame buffered by the second wireless terminal; and controlling, by the first wireless terminal, the main radio module such that the main radio module remains in a doze state until a predetermined wake-up time after reception of the wake-up packet.

First claim

1 . A method of communication in a wireless LAN system, comprising:
receiving, by a first wireless terminal including a main radio module and a wake-up radio (WUR) module for receiving a wake-up packet modulated based on on-off keying (OOK) scheme, the wake-up packet from a second wireless terminal based on the WUR module, wherein the wake-up packet includes first information indicating that a broadcast scheme is applied to the wake-up packet and second information for indicating presence of a group addressed frame buffered by the second wireless terminal; and controlling, by the first wireless terminal, the main radio module such that the main radio module remains in a doze state until a predetermined wake-up time after reception of the wake-up packet.

2 . The method of claim 1 , wherein the wake-up time is predetermined by the first wireless terminal and the second wireless terminal.

3 . The method of claim 1 , wherein the wake-up time relates to a target beacon transmission time (TBTT) including delivery traffic indication map (DTIM) information.

4 . The method of claim 3 , further comprising:
controlling, by the first wireless terminal, transition of the main radio module from the doze state to an awake state at the wake-up time; and receiving, by the first wireless terminal, a beacon frame from the second wireless terminal based on the main radio module in the awake state.

5 . The method of claim 4 , further comprising:
receiving, by the first wireless terminal, the group addressed frame from the second wireless terminal after reception of the beacon frame.

6 . A first wireless device performing a method for communication in a wireless LAN system, the first wireless device comprising:
a transceiver for transmitting/receiving a radio frequency (RF) signal; and a processor connected to the transceiver, wherein the transceiver includes a main radio module and a wake-up radio (WUR) module for receiving a wake-up packet modulated based on on-off keying (OOK) scheme, and wherein the processor is configured to receive the wake-up packet from a second wireless terminal based on the WUR module and to control the main radio module such that the main radio module remains in a doze state until a predetermined wake-up time after reception of the wake-up packet, the wake-up packet including first information indicating that a broadcast scheme is applied to the wake-up packet and second information for indicating presence of a group addressed frame buffered by the second wireless terminal; and

7 . The wireless terminal of claim 6 , wherein the wake-up time is predetermined by the first wireless terminal and the second wireless terminal.

8 . The wireless terminal of claim 6 , wherein the wake-up time relates to a target beacon transmission time (TBTT) including delivery traffic indication map (DTIM) information.

9 . The wireless terminal of claim 8 , wherein the processor is configured to control transition of the main radio module from the doze state to an awake state at the wake-up time and to receive a beacon frame from the second wireless terminal based on the main radio module in the awake state.

10 . The wireless terminal of claim 9 , wherein the processor is configured to receive the group addressed frame from the second wireless terminal after reception of the beacon frame.

Assignees

• Lg Electronics Inc

Inventors

• Kim Jeongki
• Ryu Kiseon
• Choi Jinsoo

Classifications

• H04L27/02

  Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L27/32 takes precedence) · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title