Methods and systems for managing network communications to and from a vehicle network

• US 10,178,176 B2
• Filed: 07/10/2015
• Issued: 01/08/2019
• Est. Priority Date: 07/10/2015
• Status: Active Grant

• Current Assignee: Carnegie Mellon University, GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: Carnegie Mellon University, GM Global Technology Operations LLC (General Motors Company)
• Inventors: Tonguz, Ozan, Hu, Hsu-Chieh, Bai, Fan
• Primary Examiner(s): Nooristany, Sulaiman
• Application Number:
  US14/796,566
• Publication Number:
  US 20170012883A1
• Time in Patent Office: 1,278 Days
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 4/44 for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16

Abstract

Methods and systems for communicating data between a network and devices of a vehicle are provided. A method includes: determining, by a processor, a value associated with a round trip time based on vehicle information; adjusting, by the processor, a size of a window used in communication with the network based on the value; and communicating data at least one of to and from the network based on the size of the window.

Claims

1. A method for communicating data between a network and devices of a vehicle, comprising:

selecting, by a processor, a first timeframe from a plurality of timeframes when vehicle speed is below a speed threshold;

selecting, by the processor, a second timeframe from the plurality of time frames when the vehicle speed is above the speed threshold, wherein the second timeframe is smaller than the first timeframe;

sampling, by the processor, within the selected timeframe a plurality of round trip times associated with the network,

determining, by the processor, a minimum round trip time from the plurality of round trip times;

determining, by the processor, a ratio by dividing the minimum round trip time by a current round trip time;

adjusting, by the processor, a size of a window used in communication with the network based on the ratio; and

communicating data between the network and the devices of the vehicle based on the size of the window.

2. The method of claim 1, wherein the vehicle speed is determined from wireless channel conditions under which the vehicle is driving.

3. The method of claim 1, wherein the window is a receive window used in a transport-layer protocol.

4. The method of claim 1, wherein the window is a congestion window used in a transmission control protocol.

5. The method of claim 1, wherein the adjusting the size comprises decreasing the size of the window by the ratio when the ratio is less than a determined value.

6. The method of claim 5, wherein the adjusting the size comprises increasing the size of the window by a modifier when the ratio is approximately equal to the determined value.

7. The method of claim 6, wherein the increasing the size is based on vehicle information.

8. The method of claim 7, wherein the vehicle information includes vehicle speed.

9. The method of claim 7, wherein the vehicle information includes wireless channel condition information under which the vehicle is driving.

10. The method of claim 1, further comprising determining whether there is a packet loss, and wherein the adjusting the size is based on whether there is a packet loss.

11. A system for communicating data between a network and devices of a vehicle, comprising:

a non-transitory computer readable medium, comprising;

a first module that selects, by a processor, a first timeframe from a plurality of timeframes when vehicle speed is below a speed threshold, that selects, by the processor, a second timeframe from the plurality of time frames when the vehicle speed is above the speed threshold, wherein the second timeframe is smaller than the first timeframe, that samples, by the processor, within the selected timeframe a plurality of round trip times associated with the network, that determines, by the processor, a minimum round trip time from the plurality of round trip times, and that determines, by the processor, a ratio by dividing the minimum round trip time by a current round trip time;

a second module that adjusts, by the processor, a size of a window used in communication with the network based on the ratio; and

a third module that, by the processor, communicates data between devices of the vehicle and the network based on the size of the window.

12. The system of claim 11, wherein the vehicle speed is determined from wireless channel condition under which the vehicle is driving.

13. The system of claim 11, wherein the second module decreases the size of the window based on the ratio and increases the size of the window based on the vehicle information.

14. The system of claim 11, wherein the network is a broadband network.