SELECTIVE STORAGE AND DELETION IN MOBILE CONTENT DELIVERY NETWORKS

• US 20160080279A1
• Filed: 09/12/2014
• Published: 03/17/2016
• Est. Priority Date: 09/12/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tan, Bo, Jose, Jubin, Wu, Xinzhou, Li, Junyi, Shakkottai, Sanjay
• Granted Patent: US 10,205,670 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/161 Decentralised systems, e.g. inter-vehicle communication
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 40/023 Limited or focused flooding to selected areas of a network
• CPC Class Codes: H04W 40/20 based on geographic position or location
• CPC Class Codes: H04W 84/005 Moving wireless networks
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Methods, systems, and devices are described for storing and deleting received data packets over combined vehicular and wireless communications networks. In one example, an apparatus in a vehicular communication network may receive a data packet and may determine whether to store or delete the received data packet based on a ratio of distances between the data packet and its destination address as well as the data packet'"'"'s source address and its destination address.

Claims

1. A method of wireless communication, comprising:

receiving a first data packet at a vehicle in a vehicular network;

determining a first distance between the vehicle and a destination of the first data packet;

determining a second distance between a source of the first data packet and the destination of the first data packet;

determining a first ratio between the first distance and the second distance; and

deleting the first data packet if the first ratio exceeds a threshold ratio value.

2. The method of claim 1, wherein determining the first distance comprises:

determining a current route between the vehicle and the destination of the first data packet; and

wherein determining the second distance comprises;

determining an original route between the source of the first data packet and the destination of the first data packet.

3. The method of claim 2, wherein the current route and the original route are associated with a distance.

4. The method of claim 2, wherein the current route and the original route are associated with a time period.

5. The method of claim 1, further comprising:

deleting the first data packet if a duplicate of the first data packet was previously received by the vehicle.

6. The method of claim 1, further comprising:

deleting the first data packet if the first data packet is older than an expiration time indicated by the first data packet.

7. The method of claim 1, further comprising:

determining a second ratio for a previously received data packet when an available storage space of the vehicle is below a threshold storage value, the second ratio being a ratio of a third distance between the vehicle and a previously received data packet destination and a fourth distance between a previously received data packet source and the previously received data packet destination; and

deleting one of the first data packet or the previously received data packet based at least in part on a comparison of the first ratio and the second ratio.

8. The method of claim 7, wherein deleting one of the first data packet or the previously received data packet comprises:

determining which of the first ratio and the second ratio is higher; and

deleting either the first data packet or the previously received data packet that corresponds to the higher of the first ratio and the second ratio.

9. The method of claim 1, further comprising:

deleting one of the first data packet or a second received data packet based on a comparison of data packet storage time in a storage space for the vehicle.

10. The method of claim 1, further comprising:

determining the first ratio at a time that the first data packet is received.

11. The method of claim 1, further comprising:

determining the first ratio periodically after the first data packet is received.

12. The method of claim 1, wherein the first data packet may be stored, deleted or forwarded.

13. The method of claim 1, wherein the threshold ratio value is larger than one.

14. An apparatus for wireless communication, comprising:

means for receiving a first data packet at a vehicle in a vehicular network;

means for determining a first distance between the vehicle and a destination of the first data packet;

means for determining a second distance between a source of the first data packet and the destination of the first data packet;

means for determining a first ratio between the first distance and the second distance; and

means for deleting the first data packet if the first ratio exceeds a threshold ratio value.

15. The apparatus of claim 14, wherein the means for determining the first distance comprises:

means for determining a current route between the vehicle and the destination of the first data packet; and

wherein the means for determining the second distance comprises;

means for determining an original route between the source of the first data packet and the destination of the first data packet.

16. The apparatus of claim 14, further comprising:

means for deleting the first data packet if a duplicate of the first data packet was previously received by the vehicle.

17. The apparatus of claim 14, further comprising:

means for deleting the first data packet if the first data packet is older than an expiration time indicated by the first data packet.

18. The apparatus of claim 14, further comprising:

means for determining a second ratio for a previously received data packet when an available storage space of the vehicle is below a threshold storage value, the second ratio being a ratio of a third distance between the vehicle and a previously received data packet destination and a fourth distance between a previously received data packet source and the previously received data packet destination; and

means for deleting one of the first data packet or the previously received data packet based at least in part on a comparison of the first ratio and the second ratio.

19. The apparatus of claim 18, wherein the means for deleting one of the first data packet or the previously received data packet comprises:

means for determining which of the first ratio and the second ratio is higher; and

means for deleting either the first data packet or the previously received data packet that corresponds to the higher of the first ratio and the second ratio.

20. The apparatus of claim 14, further comprising:

means for deleting one of the first data packet or a second received data packet based on a comparison of data packet storage time in a storage space for the vehicle.

21. The apparatus of claim 14, further comprising:

means for determining the first ratio at a time that the first data packet is received.

22. The apparatus of claim 14, further comprising:

means for determining the first ratio periodically after the first data packet is received.

23. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to;

receive a first data packet at a vehicle in a vehicular network;

determine a first distance between the vehicle and a destination of the first data packet;

determine a second distance between a source of the first data packet and the destination of the first data packet;

determine a first ratio between the first distance and the second distance; and

delete the first data packet if the first ratio exceeds a threshold ratio value.

24. The apparatus of claim 23, wherein the instructions for determining the first distance comprise instructions to:

determine a current route between the vehicle and the destination of the first data packet; and

wherein the instructions for determining the second distance comprise instructions to;

determine an original route between the source of the first data packet and the destination of the first data packet.

25. The apparatus of claim 23, the instructions further comprising instructions to:

delete the first data packet if a duplicate of the first data packet was previously received by the vehicle.

26. The apparatus of claim 23, the instructions further comprising instructions to:

delete the first data packet if the first data packet is older than an expiration time indicated by the first data packet.

27. A non-transitory computer-readable medium storing computer-executable code for wireless communication, the code executable by a processor to:

receive a first data packet at a vehicle in a vehicular network;

determine a first distance between the vehicle and a destination of the first data packet;

determine a second distance between a source of the first data packet and the destination of the first data packet;

determine a first ratio between the first distance and the second distance; and

delete the first data packet if the first ratio exceeds a threshold ratio value.

28. The non-transitory computer-readable medium of claim 27, wherein the code for determining the first distance comprises code executable by a processor to:

determine a current route between the vehicle and the destination of the first data packet; and

wherein the code for determining the second distance comprises code executable by a processor to;

determine an original route between the source of the first data packet and the destination of the first data packet.

29. The non-transitory computer-readable medium of claim 27, the code further comprising code executable by a processor to:

delete the first data packet if a duplicate of the first data packet was previously received by the vehicle.

30. The non-transitory computer-readable medium of claim 27, the code further comprising code executable by a processor to:

delete the first data packet if the first data packet is older than an expiration time indicated by the first data packet.