EFFICIENT MEANS OF BROADCAST AND RELAYING INFORMATION BETWEEN WIRELESS TERMINALS

• US 20140162544A1
• Filed: 12/05/2013
• Published: 06/12/2014
• Est. Priority Date: 12/10/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: EDGE, Stephen William
• Granted Patent: US 9,276,684 B2
• Time in Patent Office: Days
• US Class Current: 455/3.01
• CPC Class Codes: G01S 5/10 Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements , e.g. omega or decca systemsG01S5/12 takes precedence ; beacons and receivers cooperating therewith G01S1/306, G01S1/308
• CPC Class Codes: G01S 5/14 Determining absolute distances from a plurality of spaced points of known location
• CPC Class Codes: H04H 20/08 among terminal devices
• CPC Class Codes: H04L 12/1845 broadcast or multicast in a specific location, e.g. geocast protocols for adapting network applications to user terminal location H04L67/52; services specially adapted for wireless communication networks making use of the location of users or terminals H04W4/02
• CPC Class Codes: H04L 12/1868 Measures taken after transmission, e.g. acknowledgments
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/10 Small scale networks; Flat hierarchical networks
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may receive broadcast information related to a second UE from a third UE, relay the broadcast information and identifier information to a set of UEs, determine whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs, and refrain from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information. In another aspect, the apparatus may receive broadcast information related to a second UE and a tag associated with the broadcast information from a third UE, relay the tag without the broadcast information to a set of UEs, receive a request for broadcast information from a third UE in the set of UEs, and relay the broadcast information to the third UE. In an aspect, the first, second and third UEs may be the same UE. In another aspect, the second and third UEs but not the first UE may be the same UE.

Claims

1. A method of wireless communication of a first user equipment (UE), comprising:

receiving broadcast information related to a second UE from a third UE;

relaying the broadcast information and identifier information to a set of UEs;

determining whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs; and

refraining from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information.

2. The method of claim 1, wherein the first, second and third UEs are the same UE and wherein the receiving occurs internally within the first UE.

3. The method of claim 1, wherein the second and third UEs are the same UE and are different to the first UE.

4. The method of claim 1, further comprising receiving the broadcast information and the identifier information from UEs in the set of UEs, wherein the first UE determines that each UE in the set of UEs has received the broadcast information when the first UE receives the broadcast information and the identifier information from each UE in the set of UEs.

5. The method of claim 1, wherein the identifier information comprises an identity for the second UE and at least one of a version and a timestamp for the broadcast information generated by the second UE.

6. The method of claim 5, wherein the identifier information is received from the third UE together with the broadcast information.

7. The method of claim 6, wherein the first and second UEs are different UEs and further comprising:

receiving second broadcast information related to the second UE and at least one of a version or a timestamp associated with the second broadcast information from a fourth UE;

determining whether the broadcast information or the second broadcast information is more recent based on the at least one of the version or the timestamp associated with the second broadcast information and the at least one of the time stamp or the version associated with the broadcast information; and

relaying one of the broadcast information or the second broadcast information that is determined to be more recent.

8. The method of claim 1, further comprising generating a tag unique to the first UE, wherein the identifier information comprises the generated tag.

9. The method of claim 8, wherein the generated tag comprises the identity of the first UE and at least one of a sequence number, version or timestamp.

10. The method of claim 1, further comprising:

receiving updated broadcast information related to the second UE from the third UE; and

relaying the updated broadcast information and updated identifier information.

11. A first user equipment (UE) for wireless communication, comprising:

means for receiving broadcast information related to a second UE from a third UE;

means for relaying the broadcast information and identifier information to a set of UEs;

means for determining whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs; and

means for refraining from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information.

12. The first UE of claim 11, wherein the first, second and third UEs are the same UE and wherein the receiving occurs internally within the first UE.

13. The first UE of claim 11, wherein the second and third UEs are the same UE and are different to the first UE.

14. The first UE of claim 11, further comprising means for receiving the broadcast information and the identifier information from UEs in the set of UEs, wherein the first UE determines that each UE in the set of UEs has received the broadcast information when the first UE receives the broadcast information and the identifier information from each UE in the set of UEs.

15. The first UE of claim 11, wherein the identifier information comprises an identity for the second UE and at least one of a version and a timestamp for the broadcast information generated by the second UE.

16. The first UE of claim 15, wherein the identifier information is received from the third UE together with the broadcast information.

17. The first UE of claim 16, wherein the first and second UEs are different UEs and further comprising:

means for receiving second broadcast information related to the second UE and at least one of a version or a timestamp associated with the second broadcast information from a fourth UE;

means for determining whether the broadcast information or the second broadcast information is more recent based on the at least one of the version or the timestamp associated with the second broadcast information and the at least one of the time stamp or the version associated with the broadcast information; and

means for relaying one of the broadcast information or the second broadcast information that is determined to be more recent.

18. The first UE of claim 11, further comprising means for generating a tag unique to the first UE, wherein the identifier information comprises the generated tag.

19. The first UE of claim 18, wherein the generated tag comprises the identity of the first UE and at least one of a sequence number, version or timestamp.

20. The first UE of claim 11, further comprising:

means for receiving updated broadcast information related to the second UE from the third UE; and

means for relaying the updated broadcast information and updated identifier information.

21. A first user equipment (UE) for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory and configured to;

receive broadcast information related to a second UE from a third UE;

relay the broadcast information and identifier information to a set of UEs;

determine whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs; and

refrain from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information.

22. The first UE of claim 21, wherein the first, second and third UEs are the same UE and wherein the receiving occurs internally within the first UE.

23. The first UE of claim 21, wherein the second and third UEs are the same UE and are different to the first UE.

24. The first UE of claim 21, the at least one processor further configured to receive the broadcast information and the identifier information from UEs in the set of UEs, wherein the at least one processor determines that each UE in the set of UEs has received the broadcast information when the at least one processor receives the broadcast information and the identifier information from each UE in the set of UEs.

25. The first UE of claim 21, wherein the identifier information comprises an identity for the second UE and at least one of a version and a timestamp for the broadcast information generated by the second UE.

26. The first UE of claim 25, wherein the identifier information is received from the third UE together with the broadcast information.

27. The first UE of claim 26, wherein the first and second UEs are different UEs, the at least one processor further configured to:

receive second broadcast information related to the second UE and at least one of a version or a timestamp associated with the second broadcast information from a fourth UE;

determine whether the broadcast information or the second broadcast information is more recent based on the at least one of the version or the timestamp associated with the second broadcast information and the at least one of the time stamp or the version associated with the broadcast information; and

relay one of the broadcast information or the second broadcast information that is determined to be more recent.

28. The first UE of claim 21, the at least one processor further configured to generate a tag unique to the first UE, wherein the identifier information comprises the generated tag.

29. The first UE of claim 21, the at least one processor further configured to:

receive updated broadcast information related to the second UE from the third UE; and

relay the updated broadcast information and updated identifier information.

30. A computer program product of a first UE, comprising:

a computer-readable medium comprising code for;

receiving broadcast information related to a second UE from a third UE;

relaying the broadcast information and identifier information to a set of UEs;

determining whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs; and

refraining from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information.