# US 2020/0288268 A1 · Electronic device and method for scanning channel to perform location based service

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- Number: US 2020/0288268 A1
- Document ID: US20200288268A1
- Status: Published application
- Kind: A1
- Application number: 16/798,034
- Filed: 2020-02-21
- Published: 2020-09-10
- Earliest claimed: 2019-03-06
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Seungmin YOO; Daeho KANG; Yeunwoong KYUNG; Seonik SEONG; Chaeman LIM; Sungrae CHO
- Web page: https://patentgrep.com/patent/US20200288268A1

## CPC

- H04W 4/021: Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
- G01S 5/02: using radio waves (using satellite radio beacon systems for determining position G01S19/00)
- G01S 5/02521: {using a radio-map}
- G01S 5/0295: {Proximity-based methods, e.g. position inferred from reception of particular signals}
- H04W 52/0261: {managing power supply demand, e.g. depending on battery level}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 84/12: WLAN [Wireless Local Area 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)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- 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

In various embodiments, an electronic device may include a wireless communication module performing WLAN communication, a processor operatively connected to the wireless communication module, and a memory operatively connected to the processor. The processor may receive geofence-related information from a server in response to execution of an application associated with a geofencing service, identify status information of the electronic device, determine at least one channel based on the received geofence-related information and/or the identified status information of the electronic device, and perform a scan function based on the determined at least one channel. Other embodiments are possible.

## Claims

### Claim 1

An electronic device comprising:
a wireless communication module performing wireless local area network (WLAN) communication;
a processor operatively connected to the wireless communication module; and
a memory operatively connected to the wireless communication module and the processor,
wherein the memory stores instructions causing, when executed by the processor, the processor to:
receive geofence-related information from a server in response to execution of an application associated with a geofencing service,
identify status information of the electronic device,
determine at least one channel based on the received geofence-related information or the identified status information of the electronic device, and
perform a scan function based on the determined at least one channel.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the instructions cause the processor to:
detect a geofencing event by performing the scan function corresponding to the at least one channel; and
perform the geofencing service corresponding to the detected geofencing event.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the geofencing event includes an entry event indicating that the electronic device enters a geofencing area, or an exit event indicating that the electronic device exits the geofencing area.

### Claim 4 (depends on 1)

The electronic device of claim 1, wherein the instructions cause the processor to:
determine a minimum scan cycle based on the received geofence-related information;
identify power consumption required for performing the scan function, based on a residual battery level contained in the status information of the electronic device or the determined minimum scan cycle; and
determine the at least one channel based on the identified power consumption.

### Claim 5 (depends on 4)

The electronic device of claim 4, wherein the instructions cause the processor to:
identify a scan power allowance consumed per hour when performing the scan function; and
determine the at least one channel within a range satisfying the scan power allowance.

### Claim 6 (depends on 4)

The electronic device of claim 4, wherein the instructions cause the processor to:
when the received geofence-related information is a plurality of pieces of geofence-related information, determine, as the minimum scan cycle, a smallest scan cycle among scan cycles contained in the plurality of pieces of geofence-related information.

### Claim 7 (depends on 4)

The electronic device of claim 4, wherein the instructions cause the processor to:
when the received geofence-related information is a plurality of pieces of geofence-related information, determine the at least one channel based on a common channel contained in the plurality of pieces of geofence-related information.

### Claim 8 (depends on 1)

The electronic device of claim 1, wherein the instructions cause the processor to:
determine the at least one channel based on a frequency band corresponding to the WLAN communication or characteristics of the frequency band.

### Claim 9 (depends on 8)

The electronic device of claim 8, wherein the frequency band corresponding to the WLAN communication includes a 2.4 GHz band and a 5 GHz band, and
wherein the instructions cause the processor to:
determine the at least one channel based on the 2.4 GHz band,
determine the at least one channel by combining the 2.4 GHz band and the 5 GHz band, or
determine the at least one channel except for a dynamic frequency selection (DFS) channel corresponding to the 5 GHz band.

### Claim 10 (depends on 9)

The electronic device of claim 9, wherein the instructions cause the processor to:
determine the at least one channel by preferentially selecting a channel corresponding to the 2.4 GHz band between the 2.4 GHz band and the 5 GHz band.

### Claim 11 (depends on 1)

The electronic device of claim 1, wherein the geofence-related information includes location information of a geofencing area, basic service set ID (BSSID) information of an access point (AP) located around the geofencing area, reference received signal strength indication (RSSI) information of the AP, channel information of the AP, range information about the geofencing area, type information about a geofencing event, or information about geofencing service allowance latency.

### Claim 12

An electronic device comprising:
a wireless communication module performing wireless local area network (WLAN) communication;
a processor operatively connected to the wireless communication module; and
a memory operatively connected to the processor,
wherein the memory stores instructions causing, when executed, the processor to:
detect a scan function performed for at least one channel,
in response to detecting, identify whether the scan function is related to a geofencing service,
determine at least one channel when the scan function is related to the geofencing service, and
perform the scan function through the wireless communication module, at least in part, based on the determined at least one channel.

### Claim 13 (depends on 12)

The electronic device of claim 12, wherein the instructions cause the processor to:
determine the at least one channel, based on a time required for performing the scan function.

### Claim 14

A method for operating an electronic device, the method comprising:
receiving geofence-related information from a server in response to execution of an application associated with a geofencing service;
identifying status information of the electronic device;
determining at least one channel based on the received geofence-related information or the identified status information of the electronic device; and
performing a scan function based on the determined at least one channel.

### Claim 15 (depends on 14)

The method of claim 14, further comprising:
detecting a geofencing event by performing the scan function corresponding to the at least one channel; and
performing the geofencing service corresponding to the detected geofencing event,
wherein the geofencing event includes an entry event indicating that the electronic device enters a geofencing area, or an exit event indicating that the electronic device exits the geofencing area.

### Claim 16 (depends on 14)

The method of claim 14, wherein the determining at least one channel includes:
determining a minimum scan cycle based on the received geofence-related information;
identifying power consumption required for performing the scan function, based on a residual battery level contained in the status information of the electronic device or the determined minimum scan cycle; and
determining the at least one channel based on the identified power consumption.

### Claim 17 (depends on 16)

The method of claim 16, wherein the determining at least one channel includes:
identifying a scan power allowance consumed per hour when performing the scan function; and
determining the at least one channel within a range satisfying the scan power allowance.

### Claim 18 (depends on 16)

The method of claim 16, wherein the determining a minimum scan cycle includes:
when the received geofence-related information is a plurality of pieces of geofence-related information, determining, as the minimum scan cycle, a smallest scan cycle among scan cycles contained in the plurality of pieces of geofence-related information.

### Claim 19 (depends on 16)

The method of claim 16, wherein the determining at least one channel includes:
when the received geofence-related information is a plurality of pieces of geofence-related information, determining the at least one channel based on a common channel contained in the plurality of pieces of geofence-related information.

### Claim 20 (depends on 14)

The method of claim 14, wherein the scan function includes a scan function performed based on a 2.4 GHz band or a 5 GHz band corresponding to wireless local area network (WLAN) communication, and
wherein the determining at least one channel includes:
determining the at least one channel based on the 2.4 GHz band, or determining the at least one channel by combining the 2.4 GHz band and the 5 GHz band.