METHODS AND APPARATUS FOR RESOURCE ALLOCATION FOR D2D COMMUNICATIONS

• US 20160044665A1
• Filed: 08/04/2015
• Published: 02/11/2016
• Est. Priority Date: 08/08/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Novlan, Thomas David, Ng, Boon Loong
• Granted Patent: US 9,894,651 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A user equipment, apparatus, and method are provided for wireless communication in a hybrid communication network. A method includes transmitting, by a first user equipment (UE), a scheduling request to a first eNodeB (eNB). The scheduling request indicates that the UE is capable of device-to-device (D2D) communications. The method includes receiving, by the first UE, a first scheduling assignment (SA) from the first eNB. The first SA indicates resources to be used by the first UE for device-to-device (D2D) communications with the first eNB. The method includes communicating, by the first UE, with the first eNB according to the first SA.

Claims

1. A user equipment (UE) in a hybrid communication network, comprising:

a controller; and

a transceiver, wherein the controller is configured to cause the transceiver to;

transmit a scheduling request to a first eNodeB (eNB), wherein the scheduling request indicates that the UE is capable of device-to-device (D2D) communications;

receive a first scheduling assignment (SA) from the first eNB, wherein the first SA indicates resources to be used by the first UE for device-to-device (D2D) communications with the first eNB; and

communicate with the first eNB according to the first SA.

2. The UE of claim 1, wherein the SA indicates a first set of time domain resources for new D2D transport blocks or data, and also indicates a second set of time domain resources for retransmissions of D2D transport blocks or data.

3. The UE of claim 2, wherein the SA includes a bit field that indicates a periodicity of new D2D transport block transmissions.

4. The UE of claim 2, wherein the SA includes a retransmission time pattern index that is associated with a retransmission time pattern indicator.

5. The UE of claim 1, wherein the SA includes a bit field that indicates a first set of time domain resources for new D2D transport blocks or data, a second set of time domain resources for retransmissions of D2D transport blocks or data, and a number of retransmissions of each D2D transport block.

6. The UE of claim 1, wherein the SA indicates a periodicity of a D2D data transmission burst, including a period of transmission and retransmission of a D2D transport block, and a D2D transmission time domain pattern for the D2D transport block.

7. The UE of claim 1, wherein the SA indicates a first set of frequency domain resources for control or SA transmissions, and also indicates a second set of frequency domain resources for transmissions of D2D transport blocks or data.

8. The UE of claim 1, wherein the SA includes at least one bit field for allocating both time-domain resources and frequency-domain resources.

9. The UE of claim 1, wherein the SA includes at least one table indicating possible time resource patterns for transmission.

10. The UE of claim 1, wherein the SA implicitly indicates the resources to be used by the first UE for D2D based on a frequency location of the SA.

11. A method for a communications in a hybrid communication network, comprising:

transmitting, by a first user equipment (UE), a scheduling request to a first eNodeB (eNB), wherein the scheduling request indicates that the UE is capable of device-to-device (D2D) communications;

receiving, by the first UE, a first scheduling assignment (SA) from the first eNB, wherein the first SA indicates resources to be used by the first UE for device-to-device (D2D) communications with the first eNB; and

communicating, by the first UE, with the first eNB according to the first SA.

12. The method of claim 11, wherein the SA indicates a first set of time domain resources for new D2D transport blocks or data, and also indicates a second set of time domain resources for retransmissions of D2D transport blocks or data.

13. The method of claim 12, wherein the SA includes a bit field that indicates a periodicity of new D2D transport block transmissions.

14. The method of claim 12, wherein the SA includes a retransmission time pattern index that is associated with a retransmission time pattern indicator.

15. The method of claim 11, wherein the SA includes a bit field that indicates a first set of time domain resources for new D2D transport blocks or data, a second set of time domain resources for retransmissions of D2D transport blocks or data, and a number of retransmissions of each D2D transport block.

16. The method of claim 11, wherein the SA indicates a periodicity of a D2D data transmission burst, including a period of transmission and retransmission of a D2D transport block, and a D2D transmission time domain pattern for the D2D transport block.

17. The method of claim 11, wherein the SA indicates a first set of frequency domain resources for control or SA transmissions, and also indicates a second set of frequency domain resources for transmissions of D2D transport blocks or data.

18. The method of claim 11, wherein the SA includes at least one bit field for allocating both time-domain resources and frequency-domain resources.

19. The method of claim 11, wherein the SA includes at least one table indicating possible time resource patterns for transmission.

20. The method of claim 11, wherein the SA implicitly indicates the resources to be used by the first UE for D2D based on a frequency location of the SA.