Method and apparatus for establishing device-to-device connection in wireless communication system

• US 9,655,155 B2
• Filed: 02/06/2013
• Issued: 05/16/2017
• Est. Priority Date: 04/27/2012
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cho, Heejeong, Lee, Eunjong, Chung, Jaehoon
• Primary Examiner(s): Faroul, Farah
• Application Number:
  US14/395,778
• Publication Number:
  US 20150117293A1
• Time in Patent Office: 1,560 Days
• Field of Search: 370252, 370329
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 92/18 between terminal devices

Abstract

A method and apparatus for establishing a device-to-device (D2D) connection in a wireless communication system is provided. A network transmits a connection establishment request message to request of the D2D connection establishment to a first device and a second device, receives a connection establishment response message indicating whether to accept the request of the D2D connection establishment from the first device and the second device, and transmits a connection establishment confirm message to confirm the D2D connection establishment to a first device and a second device. The connection establishment request message includes at least one of a connection establishment type, a quality of (QoS) parameter for the D2D connection, and security information.

Claims

1. A method for establishing a device-to-device (D2D) connection in a wireless communication system, the method comprising:

determining, by a network, whether to establish the D2D connection between a first device and a second device based on a proximity between the first device and the second device, a presence of data to be transmitted by the first device and the second device, and a preference for the D2D connection;

transmitting, by a network, a connection establishment request message to request the D2D connection establishment to the first device and the second device, wherein the connection establishment request message includes a connection establishment type, a quality of service (QoS) parameter for the D2D connection, and security information;

receiving, by a network, a connection establishment response message indicating whether to accept a request of the D2D connection establishment from the first device and the second device; and

transmitting, by a network, a connection establishment confirm message to confirm the D2D connection establishment to the first device and the second device.

2. The method of claim 1, wherein the connection establishment request message further includes information on the first device and the second device, and a D2D identifier.

3. The method of claim 2, wherein the information on the first device and the second device includes identifiers of the first device and the second device.

4. The method of claim 2, wherein the D2D identifier is a link level D2D identifier allocated to a physical link between the first device and the second device.

5. The method of claim 2, wherein the D2D identifier is a connection/flow level D2D identifier allocated to a logical link between the first device and the second device.

6. The method of claim 1, wherein the connection establishment type indicates a 3-step D2D connection establishment procedure, wherein the 3-step D2D connection establishment procedure includes the step of transmitting the connection establishment request message to request the D2D connection establishment to the first device and the second device, the step of receiving the connection establishment response message indicating whether to accept the request of the D2D connection establishment from the first device and the second device, and the step of transmitting the connection establishment confirm message to confirm the D2D connection establishment to the first device and the second device.

7. The method of claim 1, wherein the connection establishment confirm message is transmitted to the first device and the second device in a unicast manner.

8. The method of claim 1, wherein the connection establishment confirm message is transmitted to the first device and the second device in a multicast manner using a D2D identifier.

9. The method of claim 1, further comprising transmitting a D2D broadcast configuration message not only to the first device and the second device but also to all neighbor devices, wherein the D2D broadcast configuration message includes information on the first device and the second device, and a D2D identifier.

10. The method of claim 9, wherein the D2D broadcast configuration message is transmitted in a broadcast manner.

11. A method for establishing a device-to-device (D2D ) connection in a wireless communication system, the method comprising:

determining, by a network, whether to establish the D2D connection between a plurality of source devices and a target device based on a proximity between the plurality of source devices and the target device, a presence of data to be transmitted by the plurality of source devices and the target device, and a preference for the D2D connection;

transmitting, by a network, a D2D broadcast configuration message to request the D2D connection establishment to the plurality of source devices, wherein the D2D broadcast configuration message includes information on the plurality of source devices and the target device, D2D connection information pre-established for the target device, a quality of service (QoS) parameter for the D2D connection, security information, and a D2D identifier; and

receiving, by a network, a connection establishment setup report message including information on the plurality of source devices and the target device from the plurality of source devices.

12. The method of claim 11, wherein the D2D broadcast configuration message is transmitted in a broadcast manner.

13. The method of claim 11, wherein the information on the plurality of source devices and the target device includes identifiers of the plurality of source devices and the target device.