METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION IN PARTIAL NETWORK ENVIRONMENT

• US 20160262124A1
• Filed: 11/10/2014
• Published: 09/08/2016
• Est. Priority Date: 11/15/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LIM, Chiwoo, RYU, Hyunseok, PARK, Seunghoon
• Granted Patent: US 10,764,852 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 56/0025 synchronizing potentially movable access points
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

According to an embodiment of this disclosure, a method for transmitting and receiving a signal in a device of a mobile communication system includes steps of receiving, from a base station, a first message containing one or more of synchronization information and resource allocation information; transmitting, to other device, a second message containing the received synchronization information and resource allocation information; and receiving, from the other device, a third message for a random access based on the synchronization information and the resource allocation information. According to an embodiment of the present disclosure, even a device failing to obtain synchronization can obtain synchronization from a base station through other device, receive authentication and security related information, and thereby perform reliable D2D communication. Also, a communication efficiency can be improved by transmitting and receiving D2D related information between devices through limited resources.

Claims

1. A method for transmitting and receiving a signal in a device of a mobile communication system, the method comprising steps of:

receiving, from a base station, a first message containing one or more of synchronization information and resource allocation information;

transmitting, to other device, a second message containing the received synchronization information and resource allocation information; and

receiving, from the other device, a third message for a random access based on the synchronization information and the resource allocation information.

2. The method of claim 1, further comprising step of:

transmitting, to the other device, a fourth message containing timing advance (TA) information of the other device determined based on the third message.

3. The method of claim 2, further comprising step of:

receiving, from the other device, a fifth message containing authentication related information created based on the fourth message.

4. The method of claim 1, further comprising steps of:

receiving, from the base station, resource allocation information for device-to-device signal transmission and reception; and

transmitting, to the other device, the received resource allocation information for device-to-device signal transmission and reception.

5. A device for transmitting and receiving a signal in a mobile communication system, the device comprising:

a transceiver configured to transmit and receive a signal; and

a control unit configured to receive, from a base station, a first message containing one or more of synchronization information and resource allocation information, to transmit, to other device, a second message containing the received synchronization information and resource allocation information, and to receive, from the other device, a third message for a random access based on the synchronization information and the resource allocation information.

6. The device of claim 5, wherein the control unit is further configured to transmit, to the other device, a fourth message containing timing advance (TA) information of the other device determined based on the third message.

7. The device of claim 6, wherein the control unit is further configured to receive, from the other device, a fifth message containing authentication related information created based on the fourth message.

8. The device of claim 5, wherein the control unit is further configured to receive, from the base station, resource allocation information for device-to-device signal transmission and reception, and to transmit, to the other device, the received resource allocation information for device-to-device signal transmission and reception.

9. A base station for transmitting and receiving a signal in a mobile communication system, the device comprising:

a transceiver configured to transmit and receive a signal; and

a control unit configured to create a first message containing one or more of synchronization information and resource allocation information for a random access of a device, and to transmit the created message to a first device,

wherein a second message created based on information contained in the first message is transmitted to a second device by the first device, and wherein a third message for a random access based on the synchronization information and the resource allocation information is transmitted to the first device from the second device.

10. The base station of claim 9, wherein a fourth message containing timing advance (TA) information of the second device determined based on the third message is transmitted to the second device from the first device.

11. The base station of claim 10, wherein a fifth message containing authentication related information created based on the fourth message is transmitted to the first device from the second device.

12. The base station of claim 9, wherein the control unit is further configured to transmit, to the first device, resource allocation information for device-to-device signal transmission and reception, and

wherein the resource allocation information for device-to-device signal transmission and reception is transmitted to the second device from the first device.

13. A device for transmitting and receiving a signal in a mobile communication system, the device comprising:

a transceiver configured to transmit and receive a signal; and

a control unit configured to receive, from other device, a first message containing synchronization information and resource allocation information for a random access, and to transmit, to the other device, a second message for a random access based on the synchronization information and the resource allocation information.

14. The device of claim 13, wherein the control unit is further configured to receive, from the other device, a third message containing timing advance (TA) information of the device determined based on the second message.

15. The device of claim 14, wherein the control unit is further configured to transmit, to the other device, a fourth message containing authentication related information created based on the third message.

16. The device of claim 13, wherein the control unit is further configured to receive, from the other device, resource allocation information for device-to-device signal transmission and reception.