METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FOR DEVICE-TO-DEVICE COMMUNICATION

• US 20160278120A1
• Filed: 11/10/2014
• Published: 09/22/2016
• Est. Priority Date: 11/08/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: RO, Sangmin, KWAK, Yongjun, JEONG, Kyeongin, JI, Hyoungju, OH, Jinyoung
• Granted Patent: US 10,334,625 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

The present invention relates to a method and an apparatus for transmitting control information for device-to-device (D2D) communication. A method for communicating between terminals of a transmission terminal according to an embodiment of the present invention comprises the steps of: determining whether transmission data corresponds to final transmission data; generating a first channel sensing signal including information indicating that the transmission data corresponds to final transmission when the transmission data is final transmission data; and transmitting the transmission data and the first channel sensing signal. According to an embodiment of the present invention, a channel sensing signal, which is necessarily required for a D2D operation of a distributed resource allocation scheme, is used to transmit the control information so that control information can be exchanged between terminals without introducing an additional control channel and signal.

Claims

1. A device-to-device (D2D) communication method of a transmitting terminal comprising:

creating a first channel sensing signal containing a condition as to whether transmission data is the last transmission data, and

transmitting the transmission data and the first channel sensing signal.

2. The method of claim 1, further comprising:

creating a second channel sensing signal containing a condition as to whether transmission data is for a voice service; and

transmitting the transmission data and the second channel sensing signal.

3. The method of claim 1, further comprising:

creating a third channel sensing signal containing decoding-related information regarding the transmission data and a condition as to whether the transmission data is the initial transmission data; and

transmitting the transmission data and the third channel sensing signal.

4. The method of claim 1, wherein:

the first channel sensing signal contains resource allocation information; and

the transmission of the transmission data and the first channel sensing signal comprises transmitting the transmission data and the first channel sensing signal via a transmission resource of a size corresponding to the resource allocation information.

5. A device-to-device (D2D) communication method of a receiving terminal comprising:

detecting a channel sensing signal containing a condition as to whether data received from a transmitting terminal corresponds to the last transmission data of the transmitting terminal;

determining whether a next communication resource is available, using the channel sensing signal; and

when a next communication resource is available, performing transmission of the data and the channel sensing signal.

6. The method of claim 5, wherein the transmission of the data and the channel sensing signal comprises:

when a next communication resource is available, setting a random back-off time;

performing a channel sensing during the back-off time; and

performing transmission of the data and the channel sensing signal when a next communication resource is available after the channel sensing.

7. The method of claim 5, wherein the channel sensing signal contains a condition as to whether transmission data is for a voice service.

8. The method of claim 5, wherein:

the channel sensing signal contains decoding-related information regarding the transmission data and a condition as to whether the received data is the initial transmission data; and

the method comprises;

decoding the received data, using decoding-related information regarding the received data.

9. A transmitting terminal for supporting device-to-device (D2D) communication comprising:

a communication unit for communicating with other terminals; and

a controller for;

creating a first channel sensing signal containing a condition as to whether transmission data is the last transmission data; and

transmitting the transmission data and the first channel sensing signal.

10. The transmitting terminal of claim 9, wherein the controller:

creates a second channel sensing signal containing a condition as to whether transmission data is for a voice service; and

transmits the transmission data and the second channel sensing signal.

11. The transmitting terminal of claim 9, wherein the controller:

creates a third channel sensing signal containing decoding-related information regarding the transmission data and a condition as to whether the transmission data is the initial transmission data and transmits the transmission data and the third channel sensing signal.

12. The transmitting terminal of claim 9, wherein:

the first channel sensing signal contains resource allocation information; and

the controller controls the transmission of the transmission data and the first channel sensing signal, via a transmission resource of a size corresponding to the resource allocation information.

13. A receiving terminal for supporting device-to-device (D2D) communication comprising:

a communication unit for communicating with other terminals; and

a controller for;

detecting a channel sensing signal containing a condition as to whether data received from a transmitting terminal corresponds to the last transmission data of the transmitting terminal;

determining whether a next communication resource is available, using the channel sensing signal; and

performing transmission of the data and the channel sensing signal when a next communication resource is available.

14. The receiving terminal of claim 13, wherein the controller:

setting a random back-off time when a next communication resource is available;

performing a channel sensing during the back-off time; and

performing transmission of the data and the channel sensing signal when a next communication resource is available after the channel sensing.

15. The receiving terminal of claim 13, wherein the channel sensing signal contains a condition as to whether transmission data is for a voice service.

16. The receiving terminal of claim 13, wherein:

the channel sensing signal contains decoding-related information regarding the transmission data and a condition as to whether the received data is the initial transmission data; and

the controller controls the decoding of the received data, using decoding-related information regarding the received data.

17. A device-to-device (D2D) communication method of a transmitting terminal comprising:

creating a scheduling assignment (SA) signal containing a condition as to whether to continue to occupy a transmittable/receivable resource of an SA signal next to a resource to be used for transmission/reception of an SA signal; and

transmitting the SA signal.

18. A device-to-device (D2D) communication method of a receiving terminal comprising:

receiving, from a transmitting terminal, a scheduling assignment (SA) signal by performing an energy sensing of a transmittable/receivable resource of an SA signal;

detecting, from the SA signal, a condition as to whether the transmitting terminal continues to occupy a transmittable/receivable resource of an SA signal next to a transmittable/receivable resource of the SA signal; and

determining whether the transmittable/receivable resource of the next SA signal is available, using the detected resource.

19. The method of claim 18, wherein receiving an SA signal comprises:

receiving an SA signal via an SA monitoring.

20. A transmitting terminal for supporting device-to-device (D2D) communication comprising:

a communication unit for communicating with other terminals; and

a controller for;

creating a scheduling assignment (SA) signal containing a condition as to whether to continue to occupy a transmittable/receivable resource of an SA signal next to a resource to be used for transmission/reception of an SA signal, and controlling the transmission of the SA signal.

21. A receiving terminal for supporting device-to-device (D2D) communication comprising:

a communication unit for communicating with other terminals; and

a controller for;

receiving, from a transmitting terminal, a scheduling assignment (SA) signal by performing an energy sensing of a transmittable/receivable resource of an SA signal;

detecting, from the SA signal, a condition as to whether the transmitting terminal continues to occupy a transmittable/receivable resource of an SA signal next to a transmittable/receivable resource of the SA signal; and

determining whether the transmittable/receivable resource of the next SA signal is available, using the detected resource.

22. The receiving terminal of claim 21, wherein the controller controls the reception of the SA signal via an SA monitoring.