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US 12,604,222 B2Granted
Communication abnormality determination device, method, storage medium, and vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMasataka Okuda, Kaoru Yoshida, Kanade Kuriyama, Masatoshi Kakutani, Toshiki Shinohara
Life of this patent
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Abstract
A communication abnormality determination device mounted on a vehicle that communicates with a server includes a detection unit that detects that a communication disruption occurs between the vehicle and the server, and a determination unit that determines a cause of occurrence of the communication disruption based on a communication strength at a first position at which the communication disruption occurs.
Claims9
A communication abnormality determination device mounted on a vehicle that communicates with a server, comprising:
- a detection unit that detects that a communication disruption occurs between the vehicle and the server;
- a determination unit that determines a cause of occurrence of the communication disruption based on a communication strength at a first position at which the communication disruption occurs;
- and
- an acquisition unit that acquires from the server information on the communication strength in a communication area where communication with the server is possible, wherein the determination unit determines that a communication device of a relay base station that relays the communication between the vehicle and the server is abnormal when the communication strength at the first position acquired in advance by the acquisition unit from the server is equal to or greater than a predetermined threshold value;
- wherein:
- after the communication device is determined to be abnormal, the determination unit specifies the communication device determined to be abnormal based on a state of communication while the vehicle moves from the first position at which the communication disruption occurs to a second position that is distant away from the first position by a predetermined distance;
- when communication between the vehicle and the server is performed while the vehicle is moving to the second position, the determination unit specifies the communication device determined to be abnormal based on a state of communication between another vehicle and the server from the first position to the second position;
- and
- the determination unit determines that the communication device that relays the communication between the vehicle and the server at the first position is abnormal when the communication disruption occurs between the other vehicle and the server at the first position and the communication disruption does not occur between the other vehicle and the server while the vehicle moves to the second position.
6 more elements
A method executed by a communication abnormality determination device mounted on a vehicle that communicates with a server, the method comprising:
- a step of detecting that a communication disruption occurs between the vehicle and the server;
- a step of acquiring from the server information on a communication strength in a communication area where communication with the server is possible;
- and
- a step of determining that a communication device is abnormal when the communication strength at a first position at which the communication disruption occurs, the communication strength acquired in advance from the server, is equal to or greater than a predetermined threshold value;
- and
- a step of acquiring from the server information on the communication strength in a communication area where communication with the server is possible, wherein it is determined that a communication device of a relay base station that relays the communication between the vehicle and the server is abnormal when the communication strength at the first position acquired in advance from the server is equal to or greater than a predetermined threshold value;
- wherein:
- after the communication device is determined to be abnormal, the communication device is determined to be abnormal based on a state of communication while the vehicle moves from the first position at which the communication disruption occurs to a second position that is distant away from the first position by a predetermined distance;
- when communication between the vehicle and the server is performed while the vehicle is moving to the second position, the communication device is determined to be abnormal based on a state of communication between another vehicle and the server from the first position to the second position;
- and
- it is determined that the communication device that relays the communication between the vehicle and the server at the first position is abnormal when the communication disruption occurs between the other vehicle and the server at the first position and the communication disruption does not occur between the other vehicle and the server while the vehicle moves to the second position.
8 more elements
A non-transitory storage medium storing a program executed by a computer of a communication abnormality determination device mounted on a vehicle that communicates with a server, the program comprising:
- a step of detecting that a communication disruption occurs between the vehicle and the server;
- a step of acquiring from the server information on a communication strength in a communication area where communication with the server is possible;
- and
- a step of determining that a communication device is abnormal when the communication strength at a first position at which the communication disruption occurs, the communication strength acquired in advance from the server, is equal to or greater than a predetermined threshold value;
- and
- a step of acquiring from the server information on the communication strength in a communication area where communication with the server is possible, wherein it is determined that a communication device of a relay base station that relays the communication between the vehicle and the server is abnormal when the communication strength at the first position acquired in advance from the server is equal to or greater than a predetermined threshold value;
- wherein:
- after the communication device is determined to be abnormal, the communication device is determined to be abnormal based on a state of communication while the vehicle moves from the first position at which the communication disruption occurs to a second position that is distant away from the first position by a predetermined distance;
- when communication between the vehicle and the server is performed while the vehicle is moving to the second position, the communication device is determined to be abnormal based on a state of communication between another vehicle and the server from the first position to the second position;
- and
- it is determined that the communication device that relays the communication between the vehicle and the server at the first position is abnormal when the communication disruption occurs between the other vehicle and the server at the first position and the communication disruption does not occur between the other vehicle and the server while the vehicle moves to the second position.
8 more elements
Dependencies are inferred from the claim text.