DEVICE AND METHOD FOR PERFORMING MACHINE-TO-MACHINE COMMUNICATION

• US 20150215861A1
• Filed: 09/27/2013
• Published: 07/30/2015
• Est. Priority Date: 09/27/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jungwoo
• Granted Patent: US 9,961,627 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1044 Group management mechanisms management of multicast group membership H04L12/185; reconfiguring of node membership in a computing system to eliminate errors G06F11/1425
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04M 1/6091 including a wireless interface
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 48/14 using user query or user detection
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Disclosed are a method and a device for performing machine-to-machine communication. The method for performing communication according to the present invention comprises: a step of searching a second device for supporting machine-to-machine communication; a step of receiving an access network query protocol (ANQP) message from the found second device; a step of determining whether a mirroring service is supported based on the ANQP message received from the second device; a step of acquiring information on the service of the second device from the ANQP message if it is determined that the second device supports the mirroring service; and a step of determining either a first device or the second device as a group owner based on the acquired information on the service of the second device and the information on the service of the first device.

Claims

1. In performing a D2D (device-to-device) communication of a 1^st device, a method of performing a communication, comprising the steps of:

discovering a 2^nd device supportive of the D2D communication;

receiving an ANQP (access network query protocol) message from the discovered 2^nd device;

determining whether a mirroring service is supported based on the received ANQP message of the 2^nd device;

if the 2^nd device supports the mirroring service as a result of the determining step, obtaining a service information of the 2^nd device from the ANQP message; and

determining either the 1^st device or the 2^nd device as a group owner based on the obtained service information of the 2^nd device and a service information of the 1^st device.

2. The method of claim 1, further comprising the steps of:

receiving a group owner intent value of the 2^nd device from the 2^nd device;

setting a group owner intent value of the 2^nd device by comparing the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other in order for the group owner intent value of a device determined as the group owner to have a greater value; and

transmitting the set group owner intent value of the 1^st device to the 2^nd device.

3. The method of claim 2, if the 1^st device is determined as the group owner, the step of setting the group owner intent value of the 1^st device, comprising the steps of:

comparing the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other; and

if the group owner intent value of the 1^st group is smaller than the group owner intent value of the 2^nd device as a result of the comparison, setting the group owner intent value of the 1^st device to be greater than the group owner intent value of the 2^nd device.

4. The method of claim 2, if the 1^st device is determined as a client of the group, the step of setting the group owner intent value of the 1^st device, comprising the steps of:

comparing the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other; and

if the group owner intent value of the 1^st group is greater than the group owner intent value of the 2^nd device as a result of the comparison, setting the group owner intent value of the 1^st device to be smaller than the group owner intent value of the 2^nd device.

5. The method of claim 1, wherein the service information comprises at least one selected from the group consisting of a type information indicating a server device or a client device, a network support information, a network required information and a network setup information.

6. The method of claim 1, wherein the service information is obtained from a query data field of the ANQP message.

7. The method of claim 1, wherein the ANQP message is extracted from a query request field of a GAS (generic advertisement service) protocol message of a Wi-Fi service discovery procedure.

8. In performing a D2D (device-to-device) communication, a 1^st device comprising:

a receiver configured to discover a 2^nd device supportive of the D2D communication, the receiver configured to receive an ANQP (access network query protocol) message from the discovered 2^nd device; and

a processor determining whether a mirroring service is supported based on the received ANQP message of the 2^nd device, the processor, if the 2^nd device supports the mirroring service as a result of the determination, obtaining a service information of the 2^nd device from the ANQP message, the processor determining either the 1^st device or the 2^nd device as a group owner based on the obtained service information of the 2^nd device and a service information of the 1^st device.

9. The 1^st device of claim 8, wherein the receiver receives a group owner intent value of the 2^nd device from the 2^nd device and wherein the processor sets a group owner intent value of the 2^nd device by comparing the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other in order for the group owner intent value of a device determined as the group owner to have a greater value.

10. The 1^St device of claim 9, wherein if the 1^St device is determined as the group owner, the processor compares the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other and wherein if the group owner intent value of the 1^st group is smaller than the group owner intent value of the 2^nd device as a result of the comparison, the processor sets the group owner intent value of the 1^st device to be greater than the group owner intent value of the 2^nd device.

11. The 1^st device of claim 9, wherein if the 1^st device is determined as a client of the group, the processor compares the group owner intent value of the 1^st device and the group owner intent value of the 2^nd device to each other and wherein if the group owner intent value of the 1^st group is greater than the group owner intent value of the 2^nd device as a result of the comparison, the processor sets the group owner intent value of the 1^st device to be smaller than the group owner intent value of the 2^nd device.

12. The 1^st device of claim 8, wherein the service information comprises at least one selected from the group consisting of a type information indicating a server device or a client device, a network support information, a network required information and a network setup information.

13. The 1^st device of claim 8, wherein the service information is obtained from a query data field of the ANQP message.

14. The 1^st device of claim 8, wherein the ANQP message is extracted from a query request field of a GAS (generic advertisement service) protocol message of a Wi-Fi service discovery procedure.

15. The 1^st device of claim 9, further comprising a transmitter configured to transmit the set group owner intent value of the 1^st device to the 2^nd device.