# US 2019/0246356 A1 · Method for transmitting and receiving wake-up packet in wireless lan system, and apparatus therefor

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- Number: US 2019/0246356 A1
- Document ID: US20190246356A1
- Status: Published application
- Kind: A1
- Application number: 16/341,863
- Filed: 2017-10-13
- Published: 2019-08-08
- Earliest claimed: 2016-10-14
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Jeongki KIM; Kiseon RYU; Suhwook KIM; Hyunhee PARK; Hangyu CHO; Jinsoo CHOI
- Web page: https://patentgrep.com/patent/US20190246356A1

## CPC

- H04W 52/0235: {where the received signal is a power saving command}
- H04L 27/02: Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L27/32 takes precedence)
- H04W 52/02: Power saving arrangements
- H04W 68/025: {Indirect paging}
- H04W 76/11: Allocation or use of connection identifiers
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 80/02: Data link layer protocols
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A method for a station (STA) receiving a wake-up radio (WUR) packet in a wireless LAN (WLAN) system according to an embodiment of the present invention comprises the steps of: entering a WUR mode; receiving a WUR packet in the WUR mode using a WUR receiver of the STA; and determining whether to terminate the WUR mode depending on whether a receiver's address included in the WUR packet corresponds to a WUR ID of the STA, wherein the WUR ID of the STA may be one that is allocated by an access point (AP) via a primary connectivity radio before the STA enters the WUR mode.

## Claims

### Claim at position 1

1-15. (canceled)

### Claim 16

A method for a wireless Local Area Network (WLAN), the method comprising:
transmitting, by a Wake-Up Radio (WUR) station (STA) including a Primary Connectivity Radio (PCR) receiver receiving a WLAN packet and a WUR receiver receiving a WUR packet, an association request including WUR capability information of the WUR STA to an access point (AP), wherein the WUR packet is modulated based on On-Off Keying (OOK) scheme;
in response to the association request, receiving, by the WUR STA, an association response including an association identifier (AID) from the AP;
transmitting, by the WUR STA to the AP, a mode request to enter a WUR mode including a time duration in which the WUR STA receives the WUR packet; and
in response to the mode request, receiving, by the WUR STA to the AP, a mode response to enter the WUR mode, wherein the mode response includes a WUR ID which identifies an intended receiver of the WUR packet.

### Claim 17 (depends on 16)

The method of claim 16, further comprising:
receiving a wake-up packet including an ID field from the AP; and
determining a power state of the PCR based on whether the ID field contains the WUR ID.

### Claim 18 (depends on 17)

The method of claim 17, wherein the power state of the PCR includes a PCR on state and a PCT off state.

### Claim 19 (depends on 17)

The method of claim 17, wherein the WUR STA operates based on a PCR on state when the ID field contains the WUR ID.

### Claim 20 (depends on 16)

The method of claim 16, wherein the mode response is a Medium Access Control (MAC) frame decodable by the PCR receiver.

### Claim 21

A Wake-Up Radio (WUR) station (STA) in a wireless Local Area Network (WLAN), the WUR STA comprising:
a Primary Connectivity Radio (PCR) receiver receiving a WLAN packet;
a WUR receiver receiving a WUR packet; and
a processor coupled to the PCR receiver and the WUR receiver and configured to:
transmit an association request including WUR capability information of the WUR STA to an access point (AP), wherein the WUR packet is modulated based on On-Off Keying (OOK) scheme;
in response to the association request, receive an association response including an association identifier (AID) from the AP;
transmit a mode request to enter a WUR mode including a time duration in which the WUR STA receives the WUR packet; and
in response to the mode request, receive a mode response to enter the WUR mode, wherein the mode response includes a WUR ID which identifies an intended receiver of the WUR packet.

### Claim 22 (depends on 21)

The WUR STA of claim 21, wherein the processor is further configured to:
receive a wake-up packet including an ID field from the AP; and
determine a power state of the PCR based on whether the ID field contains the WUR ID.

### Claim 23 (depends on 22)

The WUR STA of claim 22, wherein the power state of the PCR includes a PCR on state and a PCT off state.

### Claim 24 (depends on 22)

The WUR STA of claim 22, wherein the WUR STA operates based on a PCR on state when the ID field contains the WUR ID.

### Claim 25 (depends on 21)

The WUR STA of claim 21, wherein the mode response is a Medium Access Control (MAC) frame decodable by the PCR receiver.