Road-vehicle communication system

• US 8,471,729 B2
• Filed: 02/20/2009
• Issued: 06/25/2013
• Est. Priority Date: 02/21/2008
• Status: Expired due to Fees

• Current Assignee: JVC Kenwood Corporation
• Original Assignee: Kabushiki Kaisha Kenwood
• Inventors: Kuga, Kouji, Nagatomo, Hideyuki
• Primary Examiner(s): Nguyen, Tai T
• Application Number:
  US12/918,081
• Publication Number:
  US 20100321206A1
• Time in Patent Office: 1,586 Days
• Field of Search: 340/905, 340/928, 340/933, 340/937, 340/5.8, 701/400, 701/414, 701/415, 701/419, 701/420, 701/431
• US Class Current: 340/905
• CPC Class Codes: G01C 21/3679 Retrieval, searching and output of POI information, e.g. hotels, restaurants, shops, filling stations, parking facilities G01C21/3611 takes precedence
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096758 where no selection takes place on the transmitted or the received information
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/142 Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

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.

Claims

1. 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.

2. The road-vehicle communication system according to claim 1, wherein

the transmission history storage unit stores the date of transmission together with the transmission history information and

the control unit of the roadside apparatus decides the first content of the series of contents to be the transmission start content, if the series of contents to be transmitted differ from the series of contents transmitted on the date of transmission.

3. The road-vehicle communication system according to claim 1, wherein

the vehicle-mounted device comprises

a current location storing unit configured to store the current location, and

the control unit of the roadside apparatus decides the first content of the series of contents to be the transmission start content, if a first current location stored in the current location storing unit when the communication was interrupted is not within a predetermined range from a second current location that has just been stored in the current location storing unit.

4. 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.

5. The road-vehicle communication system according to claim 4, wherein

the content includes a plurality of elements classified according to their details;

the reception history information includes the last received element information; and

the control unit of the roadside apparatus decides the last received content to be the transmission start content based on the reception history information transmitted from the vehicle-mounted device, and transmits the content from the element succeeding the element identified by the element information.

6. 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.

7. A non-transitory computer readable program for implementing a method for enabling resumption of transmission/reception 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, in the method, the transmission/reception subsequent to the interrupted transmission/reception is resumed, and wherein the program is executed on a processor of the roadside apparatus to cause the processor to perform the steps of:

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.

8. A method for enabling resumption of transmission/reception 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, wherein the transmission/reception subsequent to the interrupted transmission/reception is resumed, the method comprising the steps of:

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.

9. A method for enabling resumption of transmission/reception 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, wherein the transmission/reception subsequent to the interrupted transmission/reception is resumed, the method comprising the steps of:

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.

10. A method for enabling resumption of transmission/reception 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, wherein the transmission/reception subsequent to the interrupted transmission/reception is resumed, the method comprising the steps of:

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.