# US 2020/0288398 A1 · Communication apparatus, control method of communication apparatus, and non-transitory computer-readable storage medium

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- Number: US 2020/0288398 A1
- Document ID: US20200288398A1
- Status: Published application
- Kind: A1
- Application number: 16/800,212
- Filed: 2020-02-25
- Published: 2020-09-10
- Earliest claimed: 2019-03-08
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Masatomo Ouchi
- Web page: https://patentgrep.com/patent/US20200288398A1

## CPC

- H04W 52/0229: {where the received signal is a wanted signal}
- H04W 8/005: {Discovery of network devices, e.g. terminals}
- H04W 40/005: {Routing actions in the presence of nodes in sleep or doze mode}
- H04W 40/244: {using a network of reference devices, e.g. beaconing}
- H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal}
- H04W 52/0235: {where the received signal is a power saving command}
- H04W 76/11: Allocation or use of connection identifiers
- 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)
- 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 communication apparatus receives a radio frame complying with an IEEE802.11 series standard, acquires information of a WUR (Wake-up Radio) Discovery element included in the received frame, and decides, based on the information of the WUR Discovery element, a WUR channel used to wait for a WUR Discovery frame.

## Claims

### Claim 1

A communication apparatus comprising:
a reception unit configured to receive a radio frame complying with an IEEE802.11 series standard;
an acquisition unit configured to acquire information of a WUR (Wake-up Radio) Discovery element included in the frame received by the reception unit; and
a decision unit configured to decide, based on the information of the WUR Discovery element, a WUR channel used to wait for a WUR Discovery frame.

### Claim 2 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel for which an interval to transmit the WUR Discovery frame is minimum.

### Claim 3 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel for which an average value of an interval to transmit the WUR Discovery frame is minimum.

### Claim 4 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel for which a maximum value of an interval to transmit the WUR Discovery frame is minimum.

### Claim 5 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel to be used by the largest number of other communication apparatuses.

### Claim 6 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel used by another communication apparatus having the same short-SSID (Service Set Identifier) as a short-SSID of the communication apparatus.

### Claim 7 (depends on 1)

The apparatus according to claim 1, wherein the decision unit decides, as the WUR channel, a channel used by another communication apparatus having a BSSID (Basic Service Set Identifier).

### Claim 8 (depends on 1)

The apparatus according to claim 1, further comprising a determination unit configured to determine, based on information included in the WUR Discovery frame received in the WUR channel, whether reception of the WUR Discovery frame is valid.

### Claim 9 (depends on 8)

The apparatus according to claim 8, wherein if the information included in the WUR Discovery frame received in the WUR channel represents an operating channel of PCR of 5 GHz, and the communication apparatus supports a 5-GHz band, the determination unit determines that the reception of the WUR Discovery frame is valid.

### Claim 10 (depends on 8)

The apparatus according to claim 8, wherein if the information included in the WUR Discovery frame received in the WUR channel represents a Compressed SSID, and the Compressed SSID matches an SSID of the communication apparatus, the determination unit determines that the reception of the WUR Discovery frame is valid.

### Claim 11

A control method of a communication apparatus, comprising:
receiving a radio frame complying with an IEEE802.11 series standard;
acquiring information of a WUR (Wake-up Radio) Discovery element included in the frame received in the receiving; and
deciding, based on the information of the WUR Discovery element, a WUR channel used to wait for a WUR Discovery frame.

### Claim 12

A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute a control method of a communication apparatus, the method comprising:
receiving a radio frame complying with an IEEE802.11 series standard;
acquiring information of a WUR (Wake-up Radio) Discovery element included in the frame received in the receiving; and
deciding, based on the information of the WUR Discovery element, a WUR channel used to wait for a WUR Discovery frame.