On-board vehicle communication system and method
First Claim
1. An on-board vehicle communication system comprising:
- a memory configured to store a plurality of security certificates;
a communication processor configured to receive external information that is external to a host vehicle equipped with the on-board vehicle communication system, the external information representing a driving environment in which the host vehicle is travelling the communication device being further configured to communicate with a remote device that is external to the host vehicle; and
a controller configured to evaluate whether an amount of security certificates stored in the storage device has decreased below a first prescribed threshold and, upon determining that the amount of security certificates has decreased below the first prescribed threshold, perform a security certificate replenishment process while permitting the communication device to use a backup security certificate, which is different from any other of the security certificates, to communicate with the remote device, such that during the security certificate replenishment process the controller evaluates the external information representing the driving environment to assess a risk factor pertaining to the travelling of the host vehicle in the driving environment, compares the risk factor to a risk threshold, controls the communication device to attempt to receive additional security certificates from at least one source that is external of the host vehicle upon determining that the risk factor is below the risk threshold, and controls the communication device to refrain from attempting to receive the additional security certificates from the at least one source upon determining that the risk factor is at least equal to the risk threshold.
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Accused Products
Abstract
An on-board vehicle communication system and method employ a storage device, a communication device and a controller. The storage device is configured to store a plurality of security certificates. The communication device is configured to receive external information that is external to a host vehicle equipped with the on-board vehicle communication system. The controller is configured to determine whether to begin a security certificate replenishment process to attempt to receive additional security certificates from at least one source that is external of the host vehicle based on the received external information, upon an amount of security certificates stored in the storage device decreasing below a first prescribed threshold.
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Citations
20 Claims
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1. An on-board vehicle communication system comprising:
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a memory configured to store a plurality of security certificates; a communication processor configured to receive external information that is external to a host vehicle equipped with the on-board vehicle communication system, the external information representing a driving environment in which the host vehicle is travelling the communication device being further configured to communicate with a remote device that is external to the host vehicle; and a controller configured to evaluate whether an amount of security certificates stored in the storage device has decreased below a first prescribed threshold and, upon determining that the amount of security certificates has decreased below the first prescribed threshold, perform a security certificate replenishment process while permitting the communication device to use a backup security certificate, which is different from any other of the security certificates, to communicate with the remote device, such that during the security certificate replenishment process the controller evaluates the external information representing the driving environment to assess a risk factor pertaining to the travelling of the host vehicle in the driving environment, compares the risk factor to a risk threshold, controls the communication device to attempt to receive additional security certificates from at least one source that is external of the host vehicle upon determining that the risk factor is below the risk threshold, and controls the communication device to refrain from attempting to receive the additional security certificates from the at least one source upon determining that the risk factor is at least equal to the risk threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18)
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17. An on-board vehicle communication method comprising:
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storing a plurality of security certificates in an on-board storage device of a host vehicle; receiving at the host vehicle external information that is external of the host vehicle, the external information representing a driving environment in which the host vehicle is travelling; and evaluating, by an on-board controller on the host vehicle, whether an amount of security certificates stored in the storage device has decreased below a first prescribed threshold; performing, by the on-board controller, a security certificate replenishment process upon the on-board controller determining that the amount of security certificates has decreased below the first prescribed threshold, the on-board controller performing the security certificate replenishment process while permitting a communication device to use a backup security certificate, which is different from any other of the security certificates, to communicate with a remote device that is external to the host vehicle, the security certificate replenishment process including evaluating, by the on-board controller, the information representing the driving environment to assess a risk factor pertaining to the travelling of the host vehicle in the driving environment, comparing, by the on-board controller, the risk factor to a risk threshold, controlling the communication device to attempt to receive additional security certificates from at least one source that is external of the host vehicle upon the on-board controller determining that the risk factor is below the risk threshold, and controlling the communication device to refrain from attempting to receive the additional security certificates from the at least one source upon the on-board controller determining that the risk factor is at least equal to the risk threshold. - View Dependent Claims (19, 20)
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Specification