RESOURCE MANAGEMENT METHOD AND APPARATUSES FOR DEVICE TO DEVICE COMMUNICATIONS

• US 20130286963A1
• Filed: 04/16/2013
• Published: 10/31/2013
• Est. Priority Date: 04/26/2012
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Zheng, Yan-Xiu, Wang, Jui-Tang
• Granted Patent: US 9,826,525 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

The present disclosure proposes a method for device to device communication and apparatuses using the same. More particularly, the present disclosure proposes a method and apparatuses to manage device to device (D2D) network resources based on maintain a user equipment (UE) network topology. The proposal includes a equipment (UE) requesting an authorization from the network for D2D communication in a licensed frequency spectrum, the UE would then receive through a control node or through another non-mobile UE the authorization which includes an identification (ID) information which allows the UE to engage in D2D communication in the license spectrum even when the UE is outside the range of the serving base station.

Claims

1. A network topology management method for device to device (D2D) communication in a network, adapted for a user equipment (UE), and the method comprising:

requesting from the network an authorization for D2D communication in a frequency spectrum;

receiving the authorization for D2D communication in the frequency spectrum;

engaging in the D2D communication in the frequency spectrum;

detecting a neighboring user equipment in proximity; and

reporting the neighboring user equipment to a control node.

2. The method of claim 1, wherein the step of detecting the neighboring user equipment in proximity further comprising:

receiving broadcasted information of the user equipment in proximity; and

reporting the broadcasted information of the user equipment in proximity to the control node in response to receiving broadcasted information of the user equipment in proximity.

3. The method of claim 1, wherein the authorization comprises an identification (ID) information.

4. The method of claim 3, wherein the ID information comprises a static ID assigned by the network if the UE is a non-mobile.

5. The method of claim 3, wherein the ID information comprises a temporary ID assigned by the network if the UE is mobile.

6. The method of claim 4, wherein the non-mobile UE further assigns another static ID to a non-mobile UE or another temporary ID to a mobile UE.

7. The method of claim 1, wherein the requesting from the network the authorization for D2D communication in the frequency spectrum is through a control node if the UE is within a radio range of the control node.

8. The method of claim 7, wherein the control node is one of an evolved node B (eNB), a base station, a relay station or a UE.

9. The method of claim 4, wherein the requesting from the network the authorization for D2D communication in the frequency spectrum is through a non-mobile UE if the UE is not within the radio range of the control node.

10. The method of claim 1 further comprising broadcasting the ID information.

11. The method of claim 1 further comprising

detecting other UEs within the radio range of the UE periodically to update a neighbors list;

and

transmitting to the network a report comprising the neighbors list.

12. The method of claim 11, wherein transmitting to the network the report is relayed through a non-mobile UE within the radio range of the UE.

13. The method of claim 11, wherein the report comprises an absolute location of at least one UE in the neighbors list.

14. The method of claim 11, wherein the report comprises a relative information of at least one UE in the neighbors list.

15. The method of claim 11, wherein the UE relays the report of a UE to the network if the UE is non-mobile.

16. The method of claim 14, wherein the relative information comprises a relative location of the at least one UE in the neighbors list.

17. The method of claim 16, wherein the relative location comprises relative distance, relative time, or relative angle.

18. The method of claim 17, wherein the UE calculates the relative location of the at least one UE in the neighbors list in relationship to a reference UE.

19. The method of claim 14, wherein the relative information is compressed from absolute information in relationship to a reference UE.

20. The method of claim 1, wherein the step of engaging in the D2D communication in the frequency spectrum further comprising:

engaging in the D2D communication in the frequency spectrum and outside the radio range of the control node.

21. The method of claim 1, wherein the control node comprises a transceiver for transmitting and receiving wireless data and a processing circuit coupled to the transceiver for performing the steps of claim 1.

22. A network topology management method for device to device (D2D) communication in a network, adapted for a control node, and the method comprising:

receiving a request for an authorization for D2D communication in a frequency spectrum;

delivering the request for the authorization for the D2D communication to the network;

receiving the authorization for the D2D communication in the frequency spectrum from the network;

transmitting a first message comprising the authorization for D2D communication in the frequency spectrum; and

receiving a report comprising a network topology information in response to transmitting the first message.

23. The method of claim 22 further comprising receiving the request for the authorization for the D2D communication in the frequency spectrum from a first user equipment (UE).

24. The method of claim 22, wherein the authorization comprises an identification (ID) information.

25. The method of claim 22, wherein the control node is one of an evolved node B (eNB), a base station, or a relay station.

26. The method of claim 24 further comprising transmitting the first message to a first UE wherein the ID information comprises a static ID assigned by the network if the first UE is non-mobile.

27. The method of claim 24 further comprising transmitting the first message to the first UE wherein the ID information comprises a mobile ID assigned by the network if the first UE is mobile.

28. The method of claim 23 further comprising the control node transmitting the first message directly to the first UE if the first UE is within a radio range of the control node.

29. The method of claim 23 further comprising the control node transmitting the first message to the first UE indirectly through a second UE if the first UE is not within the radio range of the control node.

30. The method of claim 29, wherein the second UE is non-mobile and is authorized with a static ID.

31. The method of claim 22, wherein the step of receiving the report comprising user equipment proximity information comprising:

receiving from a first UE the report comprising a neighbors list of the first UE; and

updating a network topology based on the neighbors list.

32. The method of claim 22 further comprising:

transmitting the network topology to the network to be recorded by the network.

33. The method of claim 22, wherein the network topology comprises one or more UEs and one or more relationships among the one or more UEs which access D2D resources of the network through the control node.

34. The method of claim 33, wherein a relationship of the one or more relationships among the one or more UEs is released if the relationship of the one or more relationships among the one or more UEs is absent from the network topology after a first predetermined period.

35. The method of claim 32, wherein the neighbors list comprises an absolute location of at least one UE in the neighbors list of the first UE.

36. The method of claim 32, wherein the neighbors list comprises a relative information of at least one UE in the neighbors list of the first UE.

37. The method of claim 32, wherein a second UE relays the neighbors list of the first UE to the network.

38. The method of claim 36, wherein the relative information comprises a relative location of the at least one UE in the neighbors list.

39. The method of claim 36, wherein the relative location comprises relative distance, relative time, or relative angle.

40. The method of claim 36, wherein the UE calculates the relative location of the at least one UE in the neighbors list in relationship to a reference UE.

41. The method of claim 36, wherein the relative information is compressed from absolute information in relationship to a reference UE.

42. The method of claim 22, wherein the control node comprises a transceiver for transmitting and receiving wireless data and a processing circuit coupled to the transceiver for performing the steps of claim 22.