METHOD OF RESOURCE ALLOCATION FOR DEVICE TO DEVICE COMMUNICATION, USER EQUIPMENT USING THE SAME AND BASE STATION USING THE SAME

• US 20150078297A1
• Filed: 09/15/2014
• Published: 03/19/2015
• Est. Priority Date: 09/17/2013
• Status: Abandoned Application

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Zheng, Yan-Xiu
• Application Number:
  US14/485,813
• Publication Number:
  US 20150078297A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

The present disclosure is directed to a method of resource allocation for device to device (D2D) communication, a user equipment using the same method, and a base station using the same method. In one of the exemplary embodiments, the disclosure would include a UE receiving a group of wireless signals, the UE determining from the group of wireless signals a first signal that has the highest power, the UE transmitting a second signal comprising the first signal that has the highest power to a base station, and the UE receiving a D2D resource allocation from the base station based on the second signal in response to transmitting the second signal. The first signal detected with the highest power may belong to a synchronous head.

Claims

1. A method of resource allocation for device to device (D2D) communication applicable to a user equipment, and the method comprising:

receiving a group of wireless signals;

receiving from the group of wireless signals a first signal that has a highest power, wherein the first signal detected with the highest power belongs to a synchronous head;

transmitting a second signal comprising the first signal that has the highest power;

and

receiving a D2D resource allocation based on the second signal in response to transmitting the second signal.

2. The method of claim 1, wherein receiving the D2D resource allocation comprises:

receiving an assignment to be served under the synchronous head; and

receiving a time slot as the D2D resource allocation according to the synchronous head.

3. The method of claim 2 further comprising:

receiving an unique frequency domain resource according to the synchronous head as the D2D resource allocation.

4. The method of claim 3 further comprising:

transmitting a discovery signal by using the unique frequency domain resource.

5. The method of claim 1, wherein the group of wireless signals comprises a group of discovery signals, wherein each of the group of discovery signals is from a different synchronous head.

6. The method of claim 5, wherein each of the group of wireless signals is detected on different carrier frequencies.

7. The method of claim 5, wherein each of the group of wireless signals is detected on different time slots.

8. The method of claim 1 further comprising:

receiving an assignment as the synchronous head.

9. The method of claim 4 further comprising:

synchronizing with an external device; and

transmitting synchronization information in response to synchronizing with the external device.

10. The method of claim 4 further comprising:

relaying user data between difference external devices.

11. A user equipment (UE) comprising

a transmitter for transmitting wireless signal;

a receiver for receiving wireless signal; and

a processor coupled to the transmitter and the receiver and is configured for;

receiving via the receiver a group of wireless signals;

receiving from the group of wireless signals a first signal that has a highest power, wherein the first signal detected with the highest power belongs to a synchronous head;

transmitting via the transmitter a second signal comprising the first signal that has the highest power; and

receiving via the receiver a device to device (D2D) resource allocation in response to transmitting the second signal.

12. The UE of claim 11, wherein the processor is configured for receiving the D2D resource allocation comprises:

receiving via the receiver an assignment to be served under the synchronous head; and

receiving via the receiver a time slot as the D2D resource allocation according to the synchronous head.

13. The UE of claim 12, wherein the processor is further configured for:

receiving via the receiver an unique frequency domain resource according to the synchronous head as the D2D resource allocation.

14. The UE of claim 13, wherein the processor is further configured for:

transmitting via the transmitter a discovery signal by using the unique frequency domain resource.

15. The UE of claim 11, wherein the group of wireless signals comprises a group of discovery signals, wherein each of the group of discovery signals is from a different synchronous head.

16. The UE of claim 15, wherein each of the group of wireless signals is detected on different carrier frequencies.

17. The UE of claim 15, wherein each of the group of wireless signals is detected on different time slots.

18. The UE of claim 11, wherein the processor is further configured for:

receiving via the receiver an assignment as the synchronous head.

19. The UE of claim 14, wherein the processor is further configured for:

synchronizing with an external device; and

transmitting via the transmitter synchronization information in response to synchronizing with the external device.

20. The UE of claim 14, wherein the processor further configured for:

relaying user data between difference external devices through the transmitter and the receiver.

21. A method of resource allocation for device to device (D2D) communication applicable to a base station, and the method comprising:

receiving a group of wireless signals, wherein each of the group of wireless signals comprises a report, wherein the report comprises a set of signals which have been received;

receiving from the group of wireless signals a first signal that has a highest power, wherein the first signal detected with the highest power belongs to a synchronous head; and

transmitting a second signal comprising a D2D resource allocation based on the first signal in response to receiving the group of wireless signals.

22. The method of claim 21, wherein transmitting the D2D resource allocation comprises:

transmitting an assignment to be served under the synchronous head; and

transmitting the D2D resource allocation comprising a time slot according to the synchronous head.

23. The method of claim 22 further comprising:

transmitting the D2D resource allocation comprising an unique frequency domain resource according to the synchronous head.

24. The method of claim 21 further comprising:

transmitting an assignment as the synchronous head.

25. The method of claim 24 further comprising:

synchronizing with an external device; and

transmitting synchronization information in response to synchronizing with the external device.

26. A base station comprising:

a transmitter for transmitting wireless signal;

a receiver for receiving wireless signal; and

a processor coupled to the transmitter and the receiver and is configured for;

receiving via the receiver a group of wireless signals, wherein each of the group of wireless signals comprises a report, wherein the report comprises a set of signals which have been received;

receiving from the group of wireless signals a first signal that has the highest power wherein the first signal detected with the highest power belongs to a synchronous head; and

transmitting via the transmitter a second signal comprising a D2D resource allocation based on the first signal in response to receiving the group of wireless signals.

27. The base station of claim 26, wherein the processor is configured for transmitting the D2D resource allocation comprises:

transmitting via the transmitter an assignment to be served under the synchronous head; and

transmitting via the transmitter the D2D resource allocation comprising a time slot according to the synchronous head.

28. The base station of claim 27, wherein the processor is further configured for:

transmitting via the transmitter the D2D resource allocation comprising an unique frequency domain resource according to the synchronous head.

29. The base station of claim 26, wherein the processor is further configured for:

transmitting via the transmitter an assignment as a synchronous head.

30. The base station of claim 29, wherein the processor is further configured for:

synchronizing with an external device via the transmitter and receiver; and

transmitting via the transmitter synchronization information in response to synchronizing with the external device.