Electronic device providing periodic positioning communication via wireless communication channel

Patent metadata

Field	Value
Publication number	US-11399372-B2
Application number	US-201916721276-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Mar 19, 2019
Publication date	Jul 26, 2022
Grant date	Jul 26, 2022

Abstract

An electronic device is provided. The electronic device includes an ultra-wideband (UWB) communication circuit, a processor operatively connected to the UWB communication circuit, and a memory operatively connected to the processor. The memory stores instructions, and when the instructions are executed, the instructions, when executed, further cause the processor to establish a wireless communication channel with an external electronic device using the UWB communication circuit, perform positioning communication with the external electronic device based on a predetermined period, via the wireless communication channel, recognize a distance between the electronic device and the external electronic device, and a changing trend of the distance, based at least on the positioning communication, and change the positioning communication period based on the recognized distance and the changing trend.

First claim

What is claimed is:

1. An electronic device, comprising:
a first wireless communication circuit;
a second wireless communication circuit which uses a communication scheme different from the first wireless communication circuit;
a processor operatively connected to the first wireless communication circuit and the second wireless communication circuit; and
a memory operatively connected to the processor,
wherein the memory stores instructions, and when the instructions are executed, the instructions cause the processor to:
establish a first wireless communication channel with an external electronic device using the first wireless communication circuit;
transmit session information to the external electronic device via the first wireless communication channel;
establish a second wireless communication channel with the external electronic device using the second wireless communication circuit, based on at least a part of the session information;
perform positioning communication with the external electronic device based on a predetermined first period via the second wireless communication channel;
recognize a distance between the electronic device and the external electronic device and a changing trend of the distance based at least on the positioning communication; and
change a positioning communication period based on the recognized distance and changing trend.

2. The electronic device of claim 1 , wherein the first wireless communication circuit is a Bluetooth Low Energy (BLE) communication circuit and the second wireless communication circuit is an ultra-wideband (UWB) communication circuit.

3. The electronic device of claim 2 , wherein the instructions, when executed, further cause the processor to:
determine a strength of a signal received from the external electronic device via the BLE communication circuit or a variation in the strength;
determine to activate positioning communication based on the determination result; and
establish a wireless communication channel for positioning communication using the UWB communication circuit, according to the determination.

4. The electronic device of claim 1 , wherein the instructions, when executed, further cause the processor to:
calculate a variation in the distance per unit time using a plurality of distance values obtained by performing periodic positioning communication;
if it is recognized that the distance between the electronic device and the external electronic device is not changed, or if the distance is not changed during a predetermined period of time, based on the calculated variation, set the positioning communication period to a second period, which is longer than the predetermined first period;
if it is recognized that the distance between the electronic device and the external electronic device tends to decrease based on the calculated variation, set the positioning communication period to a third period, which is shorter than the predetermined first period; and
if it is recognized that the distance between the electronic device and the external electronic device tends to increase based on the calculated variation, set the positioning communication period to a fourth period, which is longer than the predetermined first period.

5. The electronic device of claim 4 , further comprising:
an acceleration sensor operatively connected to the processor,
wherein the instructions, when executed, further cause the processor to:
determine a variation in an acceleration value based on information periodically received from the acceleration sensor;
set the third period to be shorter as the acceleration value is higher when the distance between the electronic device and the external electronic device decreases; and
set the fourth period to be longer as the acceleration value is higher and the distance between the electronic device and the external electronic device increases.

6. The electronic device of claim 1 , wherein the instructions, when executed, further cause the processor to:
position communication by transmitting a positioning start message including the predetermined first period to the external electronic device and receiving a response message in response to the positioning start message from the external electronic device; and
recognize the distance between the electronic device and the external electronic device using a point in time at which the positioning start message is transmitted, a point in time at which the response message is received, and time information included in the response message.

7. The electronic device of claim 6 , wherein information associated with the recognized distance is included in a positioning start message to be transmitted subsequently, and is transmitted to the external electronic device.

8. The electronic device of claim 6 , wherein information associated with the changed positioning communication period is included in a positioning start message to be transmitted subsequently, and is transmitted to the external electronic device.

9. The electronic device of claim 1 , wherein the instructions, when executed, further cause the processor to:
position communication by receiving a positioning start message from the external electronic device, transmitting a response message including the predetermined first period to the external electronic device, and receiving a final message including time information from the external electronic device as a response of the external electronic device that receives the response message; and
recognize the distance between the electronic device and the external electronic device using a point in time at which the response message is transmitted, a point in time at which the final message is received, and time information included in the final message.

10. The electronic device of claim 9 , wherein the information associated with the recognized distance is included in a response message to be transmitted subsequently and is transmitted to the external electronic device.

11. The electronic device of claim 9 , wherein the information associated with the changed period is included in a response start message to be transmitted subsequently, and is transmitted to the external electronic device.

12. The electronic device of claim 1 , wherein, when the recognized distance is within a threshold value, when a user input that the processor receives via an input device is a user input for controlling the external electronic device, or when an application running in the electronic device is a designated application, the instructions, when executed, further cause the processor to:
calculate a variation in the distance per unit time using a plurality of distance values obtained by performing periodic positioning communication, and recognizing that the distance between the electronic device and the external electronic device tends to decrease or recognizing that the distance between the electronic device and the external electronic device tends to increase, based on the calculated variation in the distance, so as to recognize the changing trend.

13. The electronic device of claim 12 , further comprising:
an acceleration sensor operatively connected to the processor,
wherein the instructions, when executed, further cause the processor to calculate an acceleration of the electronic device using a signal received from the acceleration sensor when the distance between the electronic device and the external electronic device decreases or increases, so as to recognize the changing trend.

14. The electronic device of claim 12 , wherein the running application comprises an application of which an ex

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jang Jonghoon
• Kang Doosuk
• Kim Hyunchul
• Yang Yi
• Yoon Sejong
• Kang Moonseok
• Kwon Eunji
• Nam Myeonghwan

Classifications

• H04W72/51 Primary

  based on terminal or device properties · CPC title

• G01S13/765

  with exchange of information between interrogator and responder · CPC title

• H04M1/72412

  using two-way short-range wireless interfaces · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04L67/52

  specially adapted for the location of the user terminal · CPC title