Vehicle communication method and communication device
First Claim
1. A vehicle communication method in which communication between a plurality of communication devices is performed, wherein the plurality of communication devices include a first communication device and a second communication device, comprising:
- determining beforehand the total sum of the amounts of communication data per unit time sent from all the communication devices that does not exceed a predetermined value of communication data,executing a process by each of the communication devices at predetermined time intervals, in which if an amount of communication data per unit time sent from the first communication device is increased, an amount of communication data per unit time sent from the second communication device is decreased so that a total sum of the amounts of communication data per unit time sent from all the communication devices does not exceed a predetermined value,receiving, via a reception device, data output patterns ordered by a higher-level device, the data output patterns being notified by the second communication device, anddetecting, via an equality detection device, whether the data output patterns notified by the second communication device are substantially equal, wherein when the equality detection device detects that the data output patterns are substantially equal, a data output pattern switching device changes the amount of communication data.
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Abstract
In a vehicle communication method in which communication between a plurality of communication devices is performed and an amount of communication data sent from each communication device is changed, features are as follows. That is, if the amount of communication data sent from the first communication device is to be increased, the amount of communication data sent from the second communication device is decreased so that a total sum of the amounts of communication data sent from all the communication devices does not exceed a predetermined value.
5 Citations
14 Claims
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1. A vehicle communication method in which communication between a plurality of communication devices is performed, wherein the plurality of communication devices include a first communication device and a second communication device, comprising:
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determining beforehand the total sum of the amounts of communication data per unit time sent from all the communication devices that does not exceed a predetermined value of communication data, executing a process by each of the communication devices at predetermined time intervals, in which if an amount of communication data per unit time sent from the first communication device is increased, an amount of communication data per unit time sent from the second communication device is decreased so that a total sum of the amounts of communication data per unit time sent from all the communication devices does not exceed a predetermined value, receiving, via a reception device, data output patterns ordered by a higher-level device, the data output patterns being notified by the second communication device, and detecting, via an equality detection device, whether the data output patterns notified by the second communication device are substantially equal, wherein when the equality detection device detects that the data output patterns are substantially equal, a data output pattern switching device changes the amount of communication data. - View Dependent Claims (2, 3)
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4. A vehicle communication system in which communication between a plurality of communication devices is performed, comprising:
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a first communication device and second communication devices, and a higher level device, wherein; the first communication device comprises; a reception device that receives data output patterns ordered by the higher-level device, the data output patterns being notified by the second communication devices, and an equality detection device that detects that data output patterns notified by the second communication devices are substantially equal, the total sum of the amounts of communication data per unit time sent from all the communication devices does not exceed a predetermined value of communication data, the first communication device comprises a data output pattern switching device that changes the amount of communication data sent, by switching a data output pattern of the first communication device to the data output patterns ordered by the higher-level device, the amount of communication data sent from the respective communication device is determined beforehand in accordance with the data output patterns at predetermined time intervals so that a total sum of the amounts of communication data sent from all the communication devices of the vehicle communication system does not exceed the predetermined value of communication data, and when it is detected by the equality detection device that the data output patterns are substantially equal, the data output pattern switching device changes the amount of communication data. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A vehicle communication system comprising:
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a data output pattern switching device that changes an amount of communication data to be sent, by switching the data output pattern of said device to the data output pattern ordered by a higher-level device, a first communication device and second communication devices, and a higher level device, wherein; the first communication device comprises; a reception device that receives data output patterns ordered by the higher-level device, the data output patterns being notified by the second communication devices, and an equality detection device that detects that data output patterns notified by the second communication devices are substantially equal, the total sum of the amounts of communication data per unit time sent from all the communication devices does not exceed a predetermined value of communication data, the first communication device comprises a data output pattern switching device that changes the amount of communication data sent, by switching a data output pattern of the first communication device to the data output patterns ordered by the higher-level device, the amount of communication data sent from the respective communication device is determined beforehand in accordance with the data output patterns at predetermined time intervals so that a total sum of the amounts of communication data sent from all the communication devices of the vehicle communication system does not exceed the predetermined value of communication data, when it is detected by the equality detection device that the data output patterns are substantially equal, the data output pattern switching device changes the amount of communication data, and the amount of communication data to be sent from the communication device is determined beforehand in accordance with the data output pattern at predetermined time intervals so that a total sum of the amounts of communication data sent from all the communication devices of the vehicle communication system does not exceed a predetermined value of communication data. - View Dependent Claims (13, 14)
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Specification