METHOD AND APPARATUS FOR EFFICIENT COMMUNICATION OF SAFETY MESSAGES FOR A GROUP OF USER EQUIPMENTS

• US 20140328241A1
• Filed: 05/02/2013
• Published: 11/06/2014
• Est. Priority Date: 05/02/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Subramanian, Sundar, Yang, Sichao, Wu, Xinzhou, Li, Junyi
• Granted Patent: US 9,210,689 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided in connection with communication of safety messages by a device on behalf of other devices in a group. In an example, a communications device is equipped to receive attribute information from one or more UEs in a group of UEs, generate group attribute information based on the received attribute information, and broadcast the group attribute information on behalf of the group of UEs. In such an aspect, the communications device is a member of the group of UEs, and the leader of the group of UEs. In another example, a communications device is equipped to transmit, by a UE, attribute information to a leader UE of a group of UEs, and prohibit broadcasting at least a portion of the attribute information. In such an aspect, the communications device is a member of the group of UEs.

Claims

1. A method of wireless communications, comprising:

receiving, by a user equipment (UE), attribute information from one or more UEs in a group of UEs, wherein the UE is a member of the group of UEs, and wherein the UE is a leader of the group of UEs;

generating group attribute information based on the received attribute information; and

broadcasting the group attribute information on behalf of the group of UEs.

2. The method of claim 1, further comprising:

receiving UE information from each of the UEs in the group of UEs; and

determining that the UE is the leader of the group of UEs based on the UE information.

3. The method of claim 2, wherein the UE information comprises a remaining battery life, and wherein the determining further comprises determining that the UE has a remaining battery life greater than any of the UEs in the group of UEs.

4. The method of claim 1, wherein the UE is selected as the leader of the group of UEs through a random process.

5. The method of claim 1, further comprising:

receiving a group admittance message from a new UE;

adding the new UE to the group of UEs;

wherein the UE also receives attribute information from the new UE.

6. The method of claim 1, wherein the attribute information is received from the one or more UEs with a low transmit power.

7. The method of claim 1, wherein the group attribute information comprises at last one of:

position information for the group of UEs;

speed information for the group of UEs;

size information for the group of UEs;

an indication of an intent to cross a road;

or

a condition associated with one or more UEs in the group of UEs.

8. The method of claim 1, further comprising:

receiving one or more messages from one or more other devices; and

transmitting a message to the group of UEs including the one or more basic safety messages in a message-digest form.

9. A method of wireless communications, comprising:

transmitting, by a user equipment (UE), attribute information to a leader UE of a group of UEs, wherein the UE is a member of the group of UEs; and

prohibiting broadcasting of at least a portion of the attribute information outside of the group of UEs.

10. The method of claim 9, wherein the attribute information is transmitted to the leader UE using a low transmit power.

11. The method of claim 9, further comprising:

obtaining the attribute information form one or more modules associated with the UE; and

reducing a duty cycle for the one or more modules upon transmission of the attribute information.

12. The method of claim 9, further comprising:

transmitting a group admittance message to one or more UEs of the group of UEs; and

receiving a confirmation message indicating admission into the group of UEs.

13. The method of claim 9, further comprising:

broadcasting UE information to the group of UEs;

receiving other UE information from one or more UEs of the group of UEs; and

determining that the UE is not a new leader of the group of UEs based on analysis of the UE information and the received other UE information.

14. The method of claim 13, wherein the UE information comprises at least one of:

a remaining battery power value;

or

a time of admission to the group of UEs.

15. The method of claim 9, further comprising:

receiving a message from the leader UE of the group of UEs including one or more basic safety messages from one or more other devices, wherein the message is in a message-digest form.

16. An apparatus for communication, comprising:

means for receiving, by a user equipment (UE), attribute information from one or more UEs in a group of UEs, wherein the UE is a member of the group of UEs, and wherein the UE is a leader of the group of UEs;

means for generating group attribute information based on the received attribute information; and

means for broadcasting the group attribute information on behalf of the group of UEs.

17. The apparatus of claim 16, wherein the means for receiving are further configured to receive UE information from each of the UEs in the group of UEs;

and

further comprising means for determining that the UE is the leader of the group of UEs based on the UE information.

18. The apparatus of claim 17, wherein the UE information comprises a remaining battery life, and wherein the means for determining are further configured to determine that the UE has a remaining battery life greater than any of the UEs in the group of UEs.

19. The apparatus of claim 16, wherein the UE is selected as the leader of the group of UEs through a random process.

20. The apparatus of claim 16, wherein the means for receiving are further configured to receive a group admittance message from a new UE;

further comprising means for adding the new UE to the group of UEs;

wherein the means for receiving are further configured to receive attribute information from the new UE.

21. The apparatus of claim 16, wherein the attribute information is received from the one or more UEs with a low transmit power.

22. The apparatus of claim 16, wherein the group attribute information comprises at last one of:

position information for the group of UEs;

speed information for the group of UEs;

size information for the group of UEs;

an indication of an intent to cross a road;

or

a condition associated with one or more UEs in the group of UEs.

23. The apparatus of claim 16, wherein the means for receiving are further configured to receive one or more messages from one or more other devices;

and

wherein the means for broadcasting are further configured to transmit a message to the group of UEs including the one or more basic safety messages in a message-digest form.

24. An apparatus for wireless communications, comprising:

means for transmitting, by a user equipment (UE), attribute information to a leader UE of a group of UEs, wherein the UE is a member of the group of UEs; and

means for prohibiting broadcasting of at least a portion of the attribute information outside of the group of UEs.

25. The apparatus of claim 24, wherein the attribute information is transmitted to the leader UE using a low transmit power.

26. The apparatus of claim 24, further comprising:

means for obtaining the attribute information form one or more modules associated with the UE; and

means for reducing a duty cycle for the one or more modules upon transmission of the attribute information.

27. The apparatus of claim 24, wherein the means for transmitting are further configured to transmit a group admittance message to one or more UEs of the group of UEs;

and

further comprising means for receiving a confirmation message indicating admission into the group of UEs.

28. The apparatus of claim 24, wherein the means for transmitting are further configured to broadcast UE information to the group of UEs, and further comprising:

means for receiving other UE information from one or more UEs of the group of UEs; and

means for determining that the UE is not a new leader of the group of UEs based on analysis of the UE information and the received other UE information.

29. The apparatus of claim 28, wherein the UE information comprises at least one of:

a remaining battery power value;

or

a time of admission to the group of UEs.

30. The apparatus of claim 24, further comprising:

means for receiving a message from the leader UE of the group of UEs including one or more basic safety messages from one or more other devices, wherein the message is in a message-digest form.

31. An apparatus for communication, comprising:

a processing system configured to;

receive, by a user equipment (UE), attribute information from one or more UEs in a group of UEs, wherein the UE is a member of the group of UEs, and wherein the UE is a leader of the group of UEs;

generate group attribute information based on the received attribute information; and

broadcast the group attribute information on behalf of the group of UEs.

32. The apparatus of claim 31, wherein the processing system is further configured to:

receive UE information from each of the UEs in the group of UEs; and

determine that the UE is the leader of the group of UEs based on the UE information.

33. The apparatus of claim 32, wherein the UE information comprises a remaining battery life, and wherein the processing system is further configured to determine that the UE has a remaining battery life greater than any of the UEs in the group of UEs.

34. The apparatus of claim 31, wherein the UE is selected as the leader of the group of UEs through a random process.

35. The apparatus of claim 31, wherein the processing system is further configured to:

receive a group admittance message from a new UE;

add the new UE to the group of UEs; and

receive attribute information from the new UE.

36. The apparatus of claim 31, wherein the attribute information is received from the one or more UEs with a low transmit power.

37. The apparatus of claim 31, wherein the group attribute information comprises at last one of:

position information for the group of UEs;

speed information for the group of UEs;

size information for the group of UEs;

an indication of an intent to cross a road;

or

a condition associated with one or more UEs in the group of UEs.

38. The apparatus of claim 31, wherein the processing system is further configured to:

receive one or more messages from one or more other devices; and

transmit a message to the group of UEs including the one or more basic safety messages in a message-digest form.

39. An apparatus for communication, comprising:

a processing system configured to;

transmit, by a user equipment (UE), attribute information to a leader UE of a group of UEs, wherein the UE is a member of the group of UEs; and

prohibit broadcasting of at least a portion of the attribute information outside of the group of UEs.

40. The apparatus of claim 39, wherein the attribute information is transmitted to the leader UE using a low transmit power.

41. The apparatus of claim 39, wherein the processing system is further configure to:

obtain the attribute information form one or more modules associated with the UE; and

reduce a duty cycle for the one or more modules upon transmission of the attribute information.

42. The apparatus of claim 39, wherein the processing system is further configure to:

transmit a group admittance message to one or more UEs of the group of UEs; and

receive a confirmation message indicating admission into the group of UEs.

43. The apparatus of claim 39, wherein the processing system is further configure to:

broadcast UE information to the group of UEs;

receive other UE information from one or more UEs of the group of UEs; and

determine that the UE is not a new leader of the group of UEs based on analysis of the UE information and the received other UE information.

44. The apparatus of claim 43, wherein the UE information comprises at least one of:

a remaining battery power value;

or

a time of admission to the group of UEs.

45. The apparatus of claim 39, wherein the processing system is further configure to:

receive a message from the leader UE of the group of UEs including one or more basic safety messages from one or more other devices, wherein the message is in a message-digest form.

46. A computer program product, comprising:

a computer-readable medium comprising code for;

receiving, by a user equipment (UE), attribute information from one or more UEs in a group of UEs, wherein the UE is a member of the group of UEs, and wherein the UE is a leader of the group of UEs;

generating group attribute information based on the received attribute information; and

broadcasting the group attribute information on behalf of the group of UEs.

47. The computer program product of claim 46, further comprising code for:

receiving UE information from each of the UEs in the group of UEs; and

determining that the UE is the leader of the group of UEs based on the UE information.

48. The computer program product of claim 47, wherein the UE information comprises a remaining battery life, and further code for determining that the UE has a remaining battery life greater than any of the UEs in the group of UEs.

49. The computer program product of claim 46, wherein the UE is selected as the leader of the group of UEs through a random process.

50. The computer program product of claim 46, further comprising code for:

receiving a group admittance message from a new UE;

adding the new UE to the group of UEs;

receiving attribute information from the new UE.

51. The computer program product of claim 46, wherein the attribute information is received from the one or more UEs with a low transmit power.

52. The computer program product of claim 46, wherein the group attribute information comprises at last one of:

position information for the group of UEs;

speed information for the group of UEs;

size information for the group of UEs;

an indication of an intent to cross a road;

or

a condition associated with one or more UEs in the group of UEs.

53. The computer program product of claim 46, further comprising code for:

receiving one or more messages from one or more other devices; and

transmitting a message to the group of UEs including the one or more basic safety messages in a message-digest form.

54. A computer program product, comprising:

a computer-readable medium comprising code for;

transmitting, by a user equipment (UE), attribute information to a leader UE of a group of UEs, wherein the UE is a member of the group of UEs; and

prohibiting broadcasting of at least a portion of the attribute information outside of the group of UEs.

55. The computer program product of claim 54, wherein the attribute information is transmitted to the leader UE using a low transmit power.

56. The computer program product of claim 54, further comprising code for:

obtaining the attribute information form one or more modules associated with the UE; and

reducing a duty cycle for the one or more modules upon transmission of the attribute information.

57. The computer program product of claim 54, further comprising code for:

transmitting a group admittance message to one or more UEs of the group of UEs; and

receiving a confirmation message indicating admission into the group of UEs.

58. The computer program product of claim 54, further comprising code for:

broadcasting UE information to the group of UEs;

receiving other UE information from one or more UEs of the group of UEs; and

determining that the UE is not a new leader of the group of UEs based on analysis of the UE information and the received other UE information.

59. The computer program product of claim 58, wherein the UE information comprises at least one of:

a remaining battery power value;

or

a time of admission to the group of UEs.

60. The computer program product of claim 54, further comprising code for:

receiving a message from the leader UE of the group of UEs including one or more basic safety messages from one or more other devices, wherein the message is in a message-digest form.