Method for performing inter PLMN discovery by a user equipment (UE) in device to-device (D2D) communication

• US 9,706,387 B2
• Filed: 07/08/2015
• Issued: 07/11/2017
• Est. Priority Date: 07/08/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chang, Young-Bin, Agiwal, Anil
• Primary Examiner(s): MIZRAHI, DIANE D
• Application Number:
  US14/794,612
• Publication Number:
  US 20160014590A1
• Time in Patent Office: 734 Days
• Field of Search: None
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Embodiments herein provide a method for performing an inter Public Land Mobile Network (PLMN) discovery, by a User Equipment (UE), in Device to Device (D2D) communication. The method includes determining one or more PLMNs to monitor for receiving discovery information. Further, the method includes determining discovery resources configured in each of the one or more PLMNs. Furthermore, the method includes monitoring discovery resources configured in the one or more PLMNs to receive the discovery information.

Claims

1. A method for monitoring a discovery message, by a user equipment (UE), the method comprising:

receiving first information including a list of frequencies and public land mobile network (PLMN) identifiers (IDs) from a serving cell;

receiving second information through at least one frequency of the list of frequencies for monitoring a discovery message on the at least one frequency;

identifying discovery configuration in the second information; and

monitoring the discovery message based on the discovery configuration.

2. The method of claim 1, wherein the first information is received from a device to device (D2D) function in a home PLMN (HPLMN) in response to a discovery monitoring request.

3. The method of claim 1, further comprising:

receiving authorization information for monitoring the discovery message.

4. The method of claim 3, wherein the authorization information comprises a list of PLMNs in which the UE is authorized for monitoring the discovery message.

5. The method of claim 3, wherein the authorization information is received from a device to device (D2D) function in a home PLMN (HPLMN).

6. The method of claim 1, wherein the at least one frequency is discovery resources configured in each of at least one PLMN.

7. The method of claim 1, wherein the first information is signaled by the serving cell of the UE in dedicated signaling.

8. The method of claim 1, wherein the UE monitors the discovery message during a discontinuous reception (DRX) mode.

9. The method of claim 1, wherein the first information is broadcast in a system information block (SIB).

10. A user equipment (UE) for monitoring a discovery message, the UE comprising:

a receiver configured to;

receive first information including a list of frequencies and public land mobile network (PLMN) identifiers (IDs) from a serving cell; and

receive second information through at least one frequency of the list of frequencies for monitoring a discovery message on the at least one frequency; and

a controller configured to;

identify discovery configuration in the second information; and

monitor the discovery message based on the discovery configuration.

11. The UE of claim 10, wherein the first information is received from a device to device (D2D) function in a home PLMN (HPLMN) in response to a discovery message monitoring request.

12. The UE of claim 10, wherein the receiver is further configured to receive authorization information for monitoring the discovery message.

13. The UE of claim 12, wherein the authorization information comprises a list of PLMNs in which the UE is authorized for monitoring the discovery message.

14. The UE of claim 12, wherein the authorization information is received from a device to device (D2D) function in a home PLMN (HPLMN).

15. The UE of claim 10, wherein the at least one frequency is discovery resources configured in each of at least one PLMN.

16. The UE of claim 10, wherein the first information is signaled by the serving cell of the UE in dedicated signaling.

17. The UE of claim 10, wherein the controller is configured to monitor the discovery message during a discontinuous reception (DRX) mode.

18. The UE of claim 10, wherein the first information is broadcast in a system information block (SIB).