METHOD OF COMMUNICATING WITH A VEHICLE HAVING A TELEMATICS UNIT
First Claim
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1. A method of communicating between a vehicle having a vehicle telematics unit and a central facility, comprising the steps of:
- (a) establishing a virtual private network (VPN) connection between a vehicle and a central facility;
(b) constructing a data message for communication between the vehicle and the central facility using the VPN;
(c) transmitting the data message via the VPN using an unreliable transmission protocol; and
(d) determining if the transmitted data message arrived at its destination.
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Abstract
A system and method for communicating between a vehicle having a vehicle telematics unit and a central facility includes establishing a virtual private network (VPN) connection between a vehicle and a central facility; constructing a data message for communication between the vehicle and the central facility using the VPN; transmitting the data message via the VPN using an unreliable transmission protocol; and determining if the transmitted data message arrived at its destination.
20 Citations
20 Claims
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1. A method of communicating between a vehicle having a vehicle telematics unit and a central facility, comprising the steps of:
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(a) establishing a virtual private network (VPN) connection between a vehicle and a central facility; (b) constructing a data message for communication between the vehicle and the central facility using the VPN; (c) transmitting the data message via the VPN using an unreliable transmission protocol; and (d) determining if the transmitted data message arrived at its destination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of communicating between a vehicle having a vehicle telematics unit and a central facility, comprising the steps of:
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(a) constructing a message at a central facility that includes a computer-readable instruction for a vehicle telematics unit; (b) establishing a virtual private network (VPN) connection between the central facility and the vehicle telematics unit for transmitting the message, wherein the VPN is at least partially established by a wireless carrier system; (c) transmitting the message via the established VPN from the central facility to the vehicle telematics unit using a user datagram protocol (UDP). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of communicating between a vehicle having a vehicle telematics unit and a central facility, comprising the steps of:
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(a) instructing a vehicle to; (a1) contact a central facility only if the vehicle receives data messages sent using a user datagram protocol (UDP); and (a2) ignore data messages received in formats other than UDP; (b) constructing a data message at the central facility that instructs a vehicle telematics unit of the vehicle to contact the central facility; (c) transmitting the data message using a virtual private network (VPN) connection between the central facility and a vehicle; and (d) determining if the data message arrived at its destination by comparing an amount of time between the message transmission in step (c) and receiving a communication from the vehicle with a predetermined threshold.
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Specification