METHOD AND DEVICE FOR PROCESSING PROXIMITY-BASED SERVICE IN WIRELESS COMMUNICATION SYSTEM

• US 20160037569A1
• Filed: 04/08/2014
• Published: 02/04/2016
• Est. Priority Date: 04/08/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Hakseong, KIM, Byounghoon
• Granted Patent: US 9,769,860 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/08 User group management
• 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 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

One embodiment of the present invention provides a method and device for performing a device-to-device (D2D) service in a wireless communication system and, more particularly, provides a method performed by a group leader device supporting the D2D service in a wireless communication system comprising a seller device and a customer device which support the D2D service. The group leader device forms a D2D terminal group including a plurality of customer devices. Information on the D2D terminal group is provided to the seller device so as to enable a reasonable transaction between the seller and a customer to be carried out.

Claims

1. A method performed by a group leader device supporting a device-to-device (D2D) service in a wireless communication system including a seller device and a customer device which support the D2D service, the method comprising:

creating, by the group leader device, a D2D user equipment (UE) group in which the customer device is included as a member;

receiving a discovery signal from the seller device in the group leader device which is in a radio resource control (RRC) idle mode;

establishing an RRC connection between a base station and the group leader device in response to the discovery signal;

after the RRC connection is established between the base station and the group leader device, transmitting to the base station a D2D link setup request message for setting up a D2D link between the seller device and the group leader device on the basis of identification information of the seller device;

setting up a D2D link between the seller device and the group leader device by using a resource scheduled by the base station;

transmitting group information related to the D2D UE group and negotiation information of the group leader device to the seller device through the D2D link between the seller device and the group leader device; and

receiving response information regarding the group information and the negotiation information from the seller device through the D2D link between the seller device and the group leader device,

wherein the creating of the D2D UE group comprises;

receiving a discovery signal from a candidate device supporting the D2D service in the group leader device which is in the RRC idle mode;

establishing an RRC connection between the group leader device and the base station in response to the discovery signal from the candidate device;

after the RRC connection is established between the group leader device and the base station, requesting resource allocation for the D2D link between the candidate device and the group leader device, on the basis of identification information for the candidate device;

receiving temporal negotiation information of the candidate device through the D2D link between the candidate device and the group leader device; and

if the temporal negotiation information corresponds to negotiation information of the group leader device, allowing the candidate device to be included in the D2D UE group.

2. The method of claim 1, further comprising allowing the candidate device to be included in the D2D UE group, wherein the candidate device is allowed to be included in the D2D UE group only when price information included in the temporal negotiation information and price information included in the negotiation information of the group leader device are in a predetermined range.

3. The method of claim 1,

wherein the temporal negotiation information of the candidate device is price information which is input by a user of the candidate device, and

wherein the negotiation information of the group leader device is price information which is input by a user of the group leader device.

4. The method of claim 1, wherein the group information related to the D2D UE group is information regarding a total aggregation of devices included in the D2D UE group, and the negotiation information of the group leader device is price information which is input by a user of the group leader device.

5. A communication device for a group leader device supporting a device-to-device (D2D) service in a wireless communication system including a seller device and a customer device which support the D2D service, comprising:

a radio signal processing unit for processing a radio signal; and

a control unit for controlling the radio signal processing unit,

wherein the control unit performs the steps of;

creating a D2D UE group in which the customer device is included as a member;

receiving a discovery signal from the seller device in the group leader device which is in a radio resource control (RRC) idle mode;

establishing an RRC connection between a base station and the group leader device in response to the discovery signal;

after the RRC connection is established between the base station and the group leader device, transmitting to the base station a D2D link setup request message for setting up a D2D link between the seller device and the group leader device on the basis of identification information of the seller device;

setting up a D2D link between the seller device and the group leader device by using a resource scheduled by the base station;

transmitting group information related to the D2D UE group and negotiation information of the group leader device to the seller device through the D2D link between the seller device and the group leader device; and

receiving response information regarding the group information and the negotiation information from the seller device through the D2D link between the seller device and the group leader device, and

wherein the step of creating the D2D UE group in the control unit comprises the steps of;

receiving a discovery signal from a candidate device supporting the D2D service in the group leader device which is in the RRC idle mode;

establishing an RRC connection between the group leader device and the base station in response to the discovery signal from the candidate device;

after the RRC connection is established between the group leader device and the base station, requesting resource allocation for the D2D link between the candidate device and the group leader device, on the basis of identification information for the candidate device;

receiving temporal negotiation information of the candidate device through the D2D link between the candidate device and the group leader device; and

if the temporal negotiation information corresponds to negotiation information of the group leader device, allowing the candidate device to be included in the D2D UE group.