Method and apparatus for transmitting and receiving discovery information in wireless communication system, and protocol stack architecture for the same

• US 10,154,402 B2
• Filed: 07/10/2014
• Issued: 12/11/2018
• Est. Priority Date: 07/10/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Agiwal, Anil, Chang, Young-Bin
• Primary Examiner(s): Roberts, Brian S
• Application Number:
  US14/904,273
• Publication Number:
  US 20160157080A1
• Time in Patent Office: 1,615 Days
• Field of Search: None
• 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 8/005 Discovery of network devices, e.g. terminals

Abstract

The present disclosure relates to a pre-5^th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4^th-generation (4G) communication system such as long term evolution (LTE). A method and user equipment (UE) for transmitting and receiving discovery information in a wireless communication system supporting a proximity service are provided. The method for transmitting discovery information includes receiving, in a medium access control (MAC) layer, discovery information for discovery associated with the proximity service from a higher layer, generating, in the MAC layer, a MAC protocol data unit (PDU) including the received discovery information, and transmitting, in a physical (PHY) layer, a discovery signal including the generated MAC PDU.

Claims

1. A method for transmitting discovery information by a user equipment (UE) in a wireless communication system supporting a proximity service, the method comprising:

receiving directly from a proximity service (ProSe) protocol layer of the UE, in a medium access control (MAC) layer of the UE, discovery information for discovery associated with the proximity service;

generating, in the MAC layer, a MAC protocol data unit (PDU) including the received discovery information;

transmitting, in a physical (PHY) layer, a discovery signal including the generated MAC PDU, and

transmitting or receiving between the UE and a base station,

wherein transmission or reception between the UE and the base station is higher in priority than transmission of the discovery signal.

2. The method of claim 1, further comprising determining a resource to be used for transmission of the discovery information in the MAC layer.

3. The method of claim 1, wherein a protocol stack, included in the UE, for the discovery includes the MAC layer and the PHY layer.

4. The method of claim 1, wherein an internet protocol layer is not used for transmission of the discovery information.

5. The method of claim 1, wherein no MAC header is added to the MAC PDU.

6. The method of claim 1, wherein the discovery signal is transmitted using a specific subframe.

7. A user equipment (UE) for transmitting discovery information in a wireless communication system supporting a proximity service, the UE comprising:

a transmitter configured to transmit a signal; and

a controller configured to control to;

receive directly from a proximity service (ProSe) protocol layer of the UE, in a medium access control (MAC) layer of the UE, discovery information for discovery associated with the proximity service,

generate, in the MAC layer, a MAC protocol data unit (PDU) including the received discovery information,

transmit, in a physical (PHY) layer, a discovery signal including the generated MAC PDU, and

transmit or receive between the UE and a base station,

wherein transmission or reception between the UE and the base station is higher in priority than transmission of the discovery signal.

8. The UE of claim 7, wherein the controller is further configured to determine a resource to be used for transmission of the discovery information in the MAC layer.

9. The UE of claim 7, wherein the protocol stack for the discovery includes the MAC layer and the PHY layer.

10. The UE of claim 7, wherein the controller is further configured not to use an internet protocol layer for transmission of the discovery information.

11. The UE of claim 7, wherein no MAC header is added to the MAC PDU.

12. The UE of claim 7, wherein the controller is further configured to control to transmit the discovery signal using a specific subframe.

13. A method for receiving discovery information by a user equipment (UE) in a wireless communication system supporting a proximity service, the method comprising:

receiving, in a physical (PHY) layer, a discovery signal including a medium access control protocol data unit (MAC PDU), the discovery signal including discovery information for discovery associated with the proximity service;

extracting, from a MAC layer, the discovery information included in the received MAC PDU;

forwarding directly to a proximity service (ProSe) protocol layer of the UE, in the MAC layer of the UE, the extracted discovery information; and

transmitting or receiving between the UE and a base station,

wherein transmission or reception between the UE and the base station is higher in priority than transmission of the discovery signal.

14. The method of claim 13, further comprising determining a resource to be used for reception of the discovery information in the MAC layer.

15. The method of claim 13, wherein a protocol stack, included in the UE, for the discovery includes the MAC layer and the PHY layer.

16. A user equipment (UE) for receiving discovery information in a wireless communication system supporting a proximity service, the UE comprising:

a receiver configured to receive a signal; and

a controller configured to control to;

receive, in a physical (PHY) layer, a discovery signal including a medium access control protocol data unit (MAC PDU), the discovery signal including discovery information for discovery associated with the proximity service,

extract, from a MAC layer, the discovery information included the received MAC PDU,

forward directly to a proximity service (ProSe) protocol layer of the UE, in the MAC layer of the UE, the extracted discovery information, and

transmit or receive between the UE and a base station,

wherein transmission or reception between the UE and the base station is higher in priority than transmission of the discovery signal.

17. The UE of claim 16, wherein the controller is further configured to determine a resource to be used for reception of the discovery information in the MAC layer.

18. The UE of claim 16, wherein a protocol stack, included in the UE, for the discovery includes the MAC layer and the PHY layer.