Apparatus and program for vehicular wireless communication
First Claim
1. A communication apparatus for use in a vehicle, wherein a data communication is established wirelessly between the communication apparatus and a communication unit that is installed in a station, the communication apparatus comprising:
- a transmission repeater unit transmitting transmission data to the communication unit repeatedly until receiving an acknowledgement of a reception completion of the transmission data from the communication unit;
a transmission termination unit terminating repeated transmissions of the transmission data by the transmission repeater unit when a number of repeated transmissions of the transmission data reaches a standard value; and
a re-number unit changing the standard value of the repeated transmissions of the transmission data based on content of the transmission data from the communication unit;
whereinthe communication unit transmits a Beacon Service Table (BST) signal that includes an Application Entity ID (AID) data value for specifying an application type, and further wherein the re-number unit changes the standard value of the repeated transmissions of the transmission data based on the AID data value; and
the re-number unit decreases the standard value of the repeated transmissions in a case that the AID data value indicates that the application type provided by the communication unit is not the electronic toll collection application, in comparison to a case that the AID data value indicates that the application type provided by the communication unit is an electronic toll collection application.
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Accused Products
Abstract
A communication apparatus for use in a vehicle includes a transmission repeater, a transmission terminator and a re-number unit. In a wireless communication between the communication apparatus and a communication unit in a facility such as a toll collection booth or the like, the transmission repeater transmits transmission data to the communication unit repeatedly until receiving an acknowledgement of reception completion of the transmission data from the communication unit, and the transmission terminator terminates repeated transmissions of the transmission data by the transmission repeater when a number of the repeated transmissions of the transmission data reaches a standard value. Further, the re-number unit changes the number of the repeated transmissions of the transmission data based on a content of the transmission data from the communication unit.
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Citations
10 Claims
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1. A communication apparatus for use in a vehicle, wherein a data communication is established wirelessly between the communication apparatus and a communication unit that is installed in a station, the communication apparatus comprising:
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a transmission repeater unit transmitting transmission data to the communication unit repeatedly until receiving an acknowledgement of a reception completion of the transmission data from the communication unit; a transmission termination unit terminating repeated transmissions of the transmission data by the transmission repeater unit when a number of repeated transmissions of the transmission data reaches a standard value; and a re-number unit changing the standard value of the repeated transmissions of the transmission data based on content of the transmission data from the communication unit;
whereinthe communication unit transmits a Beacon Service Table (BST) signal that includes an Application Entity ID (AID) data value for specifying an application type, and further wherein the re-number unit changes the standard value of the repeated transmissions of the transmission data based on the AID data value; and the re-number unit decreases the standard value of the repeated transmissions in a case that the AID data value indicates that the application type provided by the communication unit is not the electronic toll collection application, in comparison to a case that the AID data value indicates that the application type provided by the communication unit is an electronic toll collection application. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling a computer to be serving as a communication apparatus for use in a vehicle to establish a wireless communication with a communication unit that is installed in a station, the method comprising:
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transmitting transmission data to the communication unit repeatedly until receiving an acknowledgement of reception completion of the transmission data from the communication unit; terminating repeated transmissions of the transmission data when a number of the repeated transmissions of the transmission data reaches a standard value; changing the standard value of repeated transmissions of the transmission data based on content of the transmission data from the communication unit. “
,transmitting a beacon Service Table (BST) signal that includes an Application Entity ID (AID) data value for specifying an application type; and
changing the standard value on the repeated transmission of the transmission data based on the AID value includes decreasing the standard value of the repeated transmissions in a case that the AID value indicates that the application type provided by the communication unit is not an electronic toll collection application in comparison to a case that the AID value indicates that the application type provided by the communication unit is the electronic toll collection application ”
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8. A communication system comprising:
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a first communication unit installed in a station; a second communication unit in a vehicle that wirelessly communicates with the first communication unit, the second communication unit including a transmission repeater unit, a transmission termination unit, and a re-number unit;
whereinthe transmission repeater unit transmits transmission data to the first communication unit repeatedly until an acknowledgement of a reception completion of the transmission data from the first communication unit is received; the transmission termination unit terminates repeated transmissions of the transmission data by the transmission repeater unit when a number of repeated transmissions of the transmission data reaches a standard value; the re-number unit changes the standard value of repeated transmissions of the transmission data based on content of the transmission data from the first communication unit; the first communication unit transmits a Beacon Service Table (BST) signal that includes an Application Entity ID (AID) data value for specifying an application type, and further wherein the re-number unit changes the standard value of the repeated transmissions of the transmission data based on the AID data value; and the re-number unit decreases the standard value of the repeated transmissions in a case that the AID data value indicates that the application type provided by the communication unit is not the electronic toll collection application, in comparison to a case that the AID data value indicates that the application type provided by the communication unit is an electronic toll collection application. - View Dependent Claims (9, 10)
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Specification