ROAD-VEHICLE COMMUNICATION SYSTEM
2 Assignments
0 Petitions
Accused Products
Abstract
A road-vehicle communication system enabling resumption of the transmission/reception from the rest of data between the vehicle and the road if the transmission/reception is interrupted. Specifically, the road-vehicle communication system includes a roadside apparatus for distributing a content and a vehicle-mounted device which can play a distributed content, the roadside apparatus is connected communicatively with the vehicle-mounted device, and a series of contents are distributed from the roadside apparatus to the vehicle-mounted device. The roadside apparatus includes a control unit for determining a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and distributing the other contents succeeding the determined transmission start content. Thus, if the transmission/reception of data between the road and vehicle is interrupted, the transmission/reception can be resumed.
20 Citations
20 Claims
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1-10. -10. (canceled)
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11. A road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, wherein
the roadside apparatus comprises: -
a control unit configured to decide a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content; and a transmission history storage unit configured to store transmission history information, which indicates the content transmitted last among the series of contents for each vehicle-mounted device, wherein the control unit identifies the vehicle-mounted device to be a communication party based on vehicle-mounted device information transmitted from the vehicle-mounted device upon starting the communication, and decides the content succeeding the content transmitted last to be the transmission start content. vehicle-mounted device upon starting the communication, and decides the content succeeding the content transmitted last to be the transmission start content. - View Dependent Claims (15, 16)
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12. A road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, wherein
the roadside apparatus comprises: -
a control unit configured to decide a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content; and the vehicle-mounted device comprises; a reception history storage unit configured to store reception history information, which indicates the content received last among the series of contents transmitted from the roadside apparatus; and a control unit configured to transmit the reception history information to the roadside apparatus upon starting the communication, wherein the control unit of the roadside apparatus decides the content succeeding the content received last to be the transmission start content based on the reception history information transmitted from the vehicle-mounted device. - View Dependent Claims (14)
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13. A road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, wherein
the roadside apparatus comprises: -
a control unit configured to decide a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content; and a transmission history storage unit configured to store transmission history information, which indicates the content transmitted last among the series of contents for each vehicle-mounted device, and the vehicle-mounted device comprises; a reception history storage unit configured to store reception history information, which indicates the content received last among the series of contents transmitted from the roadside apparatus; and a control unit configured to transmit the reception history information to the roadside apparatus upon starting the communication, and wherein the control unit of the roadside apparatus decides the content succeeding the content received last to be the transmission start content based on the reception history information, if the reception history information transmitted from the vehicle-mounted device does not agree with the transmission history information for the vehicle-mounted device.
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17. A computer readable program for implementing a method for enabling resumption of transmission/reception from the rest in a road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, if the content is stored in a storage medium of the roadside apparatus and the transmission/reception of the content between the roadside apparatus and the vehicle-mounted device is interrupted, wherein the program is executed on a processor of the roadside apparatus to cause the processor to perform the steps of:
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deciding a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content; and storing transmission history information, which indicates the content transmitted last among the series of contents for each vehicle-mounted device, wherein a control unit of the roadside apparatus identifies the vehicle-mounted device to be a communication party based on vehicle-mounted device information transmitted from the vehicle-mounted device upon starting the communication, and decides the content succeeding the content transmitted last to be the transmission start content based on the transmission history information for the identified vehicle-mounted device.
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18. A method for enabling resumption of transmission/reception from the rest in a road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, if the transmission/reception of the content between the roadside apparatus and the vehicle-mounted device is interrupted, the method comprising the steps of:
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deciding a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content; and storing transmission history information, which indicates the content transmitted last among the series of contents for each vehicle-mounted device, wherein a control unit of the roadside apparatus identifies the vehicle-mounted device to be a communication party based on vehicle-mounted device information transmitted from the vehicle-mounted device upon starting the communication, and decides the content succeeding the content transmitted last to be the transmission start content based on the transmission history information for the identified vehicle-mounted device.
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19. A method for enabling resumption of transmission/reception from the rest in a road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, if the transmission/reception of the content between the roadside apparatus and the vehicle-mounted device is interrupted, the method comprising the steps of:
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deciding a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content at a control unit of the roadside apparatus; and storing reception history information, which indicates the content received last among the series of contents transmitted from the roadside apparatus, into a reception history storage unit of the vehicle-mounted device, wherein a control unit of the vehicle-mounted device transmits the reception history information to the roadside apparatus upon starting the communication, and the control unit of the roadside apparatus decides the content succeeding the content received last to be the transmission start content based on the reception history information transmitted from the vehicle-mounted device.
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20. A method for enabling resumption of transmission/reception from the rest in a road-vehicle communication system comprising a roadside apparatus for transmitting contents and a vehicle-mounted device for reproducing the contents transmitted from the roadside apparatus which are communicatively connected to each other, wherein it is judged whether or not the vehicle-mounted device is a member, and if it has been judged to be a member, the roadside apparatus receives uplink information including communication history information from the vehicle-mounted device having entered into a communication area and a series of contents is transmitted from the roadside apparatus to the vehicle-mounted device, the series of contents consisting of a plurality of contents based on the uplink information, if the transmission/reception of the content between the roadside apparatus and the vehicle-mounted device is interrupted, the method comprising the steps of:
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deciding a content which the roadside apparatus starts transmitting to the vehicle-mounted device, which is a communication party, from among the series of contents and transmitting the other contents succeeding the decided transmission start content at a control unit of the roadside apparatus; storing transmission history information, which indicates the content transmitted last among the series of contents for each vehicle-mounted device, into a transmission history storage unit of the roadside apparatus, and storing reception history information, which indicates the content received last among the series of contents transmitted from the roadside apparatus, into a reception history storage unit of the vehicle-mounted device, wherein a control unit of the vehicle-mounted device transmits the reception history information to the roadside apparatus upon starting the communication, and the control unit of the roadside apparatus decides the content succeeding the content received last to be the transmission start content based on the reception history information, if the reception history information transmitted from the vehicle-mounted device does not agree with the transmission history information for the vehicle-mounted device.
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Specification