WO2017101208A1 - 用于车辆通信的数据传输方法及数据传输装置、路侧单元 - Google Patents

用于车辆通信的数据传输方法及数据传输装置、路侧单元 Download PDF

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Publication number
WO2017101208A1
WO2017101208A1 PCT/CN2016/072859 CN2016072859W WO2017101208A1 WO 2017101208 A1 WO2017101208 A1 WO 2017101208A1 CN 2016072859 W CN2016072859 W CN 2016072859W WO 2017101208 A1 WO2017101208 A1 WO 2017101208A1
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WO
WIPO (PCT)
Prior art keywords
terminal
vehicle communication
roadside unit
unit
data
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PCT/CN2016/072859
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English (en)
French (fr)
Inventor
郑倩
雷艺学
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017101208A1 publication Critical patent/WO2017101208A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method for vehicle communication, a data transmission device for vehicle communication, and a roadside unit.
  • V2X Vehicle to X, vehicle-to-target communication
  • V2X communication methods include: V2V (Vehicle to Vehicle), V2P (Vehicle to Individual Person), V2I (Vehicle to Infrastructure), and the like.
  • V2I communication includes: 1) RSU (Road Side Unit) only broadcasts for the local range it covers; 2) RSU has certain data storage and computing capabilities, which can detect quickly and accurately.
  • the traffic, traffic, traffic conditions, etc. are filtered, processed, sorted, predicted, and sent to the vehicle.
  • the RSU deployed along the road accesses the LTE network, thereby obtaining content such as traffic and entertainment services from the application server on the network side.
  • the data in the network side entity and the server cluster can be acquired by the roadside unit 104; when the vehicle 102' is in the coverage of the roadside unit 106 In the case of the area, the data in the network side entity and the server cluster can be acquired by the roadside unit 106.
  • the vehicle Since the vehicles accessing the LTE (Long Term Evolution) network through the RSU are all in a high-speed mobile state, the vehicle has limited travel time within a certain RSU coverage, and the vehicle cannot completely receive the content of interest. For example, some content is in bulk data and cannot be downloaded within one roadside unit coverage, if you enter a new RSU each time. The coverage area must re-establish the content download process, which will inevitably prolong the download time and affect the user experience.
  • LTE Long Term Evolution
  • the invention is based on at least one of the above technical problems, and proposes a new data transmission scheme for vehicle communication, which realizes the technical effect that multiple roadside units cooperate to transmit data for the terminal, and effectively shortens the vehicle communication data.
  • the transmission duration is beneficial to enhance the user experience.
  • a data transmission method for vehicle communication including: a first roadside unit receives a data download request sent by a terminal; and according to the data download request, from a network side Obtaining and buffering, in the server, the vehicle communication data requested by the terminal to download; transmitting the vehicle communication data to the terminal; predicting an area to be entered by the terminal, and determining that the coverage includes the second roadside unit of the area
  • the terminal is about to leave the coverage of the first roadside unit, if the terminal has not completely received the vehicle communication data requesting to download, the first roadside unit is to the second roadside
  • the unit transmits a notification message to continue transmission of the vehicle communication data to the terminal by the second roadside unit when the terminal enters the coverage of the second roadside unit.
  • the first roadside unit predicts an area to be entered by the terminal in the process of transmitting the vehicle communication data to the terminal, and determines that the coverage includes the second roadside unit of the area, and is to be driven at the terminal.
  • the coverage of the first roadside unit is out, if the terminal has not completely received the vehicle communication data requesting the download, the first roadside unit sends a notification message to the second roadside unit, so that the terminal enters the second roadside unit.
  • the second roadside unit can continue to transmit the vehicle communication data to the terminal, thereby avoiding the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered.
  • the technical effect that multiple roadside units cooperate to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication data, and is beneficial to improving the user experience.
  • the step of acquiring and buffering the vehicle communication data requested by the terminal from the network side server according to the data download request includes: Determining, according to the travel information included in the data download request, a travel duration of the terminal in a coverage area of the first roadside unit; acquiring from the network side server according to a data transmission rate and the travel duration And cache the corresponding size of vehicle communication data.
  • the vehicle communication data of the corresponding size is acquired and cached from the network side server according to the data transmission rate and the predicted travel time of the terminal in the coverage of the first roadside unit, so that all the cache terminals can be avoided.
  • the requested vehicle communication data increases the buffer pressure of the roadside unit.
  • the step of predicting an area to be entered by the terminal specifically includes: receiving travel information periodically reported by the terminal; and driving information and stored according to the terminal periodically reported by the terminal.
  • the historical location information of the terminal determines a motion trajectory of the terminal; and predicts an area to be entered by the terminal according to the motion trajectory of the terminal.
  • the driving information includes a combination of any one or more of the following: a vehicle identification, a real-time position, a traveling speed, a driving acceleration, and a traveling direction.
  • any one of the above technical solutions preferably, further comprising: detecting whether another terminal requests to download the vehicle communication data within a predetermined time; if no other terminal requests to download the vehicle communication data within the predetermined time, The cached vehicle communication data is deleted.
  • the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the buffer pressure of the side unit by deleting the cached vehicle communication data when no other terminal requests to download the downloaded vehicle communication data within a predetermined time, the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the notification message sent to the second roadside unit includes: receiving, by the terminal, the vehicle communication data, and the terminal entering the second road The time of the side unit and the position information of the terminal entering the second road side unit.
  • a data transmission method for vehicle communication comprising: a second roadside unit receiving a notification message sent by a first roadside unit, wherein the notification message is the terminal When the coverage of the first roadside unit is to be taken out, and the vehicle communication data requesting the download is not completely received, the first roadside unit transmits; and the terminal enters the second road When the coverage of the side unit, the second roadside unit continues to transmit the vehicle communication data to the terminal according to the notification message.
  • the second roadside unit receives the notification sent by the first roadside unit. And when the terminal enters the coverage of the second roadside unit, the second roadside unit continues to transmit the vehicle communication data to the terminal according to the received notification message, thereby avoiding entering the new road each time in the related art.
  • the coverage of the side unit is re-transmitted, the data reception time is too long, and the technical effect of multiple roadside units cooperating to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication data, and is beneficial to improving the user.
  • the coverage of the side unit is re-transmitted, the data reception time is too long, and the technical effect of multiple roadside units cooperating to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication data, and is beneficial to improving the user.
  • the coverage of the side unit is re-transmitted, the data reception time is too long, and the technical effect of multiple roadside units cooperating to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication
  • the method further includes: predicting an area where the terminal is to enter, and determining that the coverage includes other roadside units of the area; and the terminal is about to exit the second road side unit If the terminal still does not completely receive the vehicle communication data requesting the download, the notification message is sent to the other roadside unit to enter the coverage of the other roadside unit when the terminal enters the coverage of the other roadside unit.
  • the vehicle communication data is continuously transmitted to the terminal by the other roadside unit.
  • the second roadside unit may send the coverage to the other roadside unit including the area where the terminal is to enter.
  • the notification message is that when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal, ensuring that the data is transmitted to the terminal through cooperation of the plurality of roadside units, thereby effectively shortening the vehicle communication data.
  • the transmission time is long, which is beneficial to enhance the user experience.
  • the first roadside unit transmits the vehicle communication data to the terminal, when the terminal is about to exit the coverage of the first roadside unit, If the data transmission has not been completed, the first road side unit sends a notification message to the second road side unit to which the terminal is to be driven, so that when the terminal enters the coverage of the second road side unit, the second road is The side unit continues to transmit vehicle communication data to the terminal; when the terminal is about to exit the coverage of the second roadside unit, if the data transmission has not been completed, the second roadside unit will enter the third roadside unit to which the terminal is to enter The notification message is sent so that when the terminal enters the coverage of the third roadside unit, the third roadside unit continues to transmit the vehicle communication data to the terminal; ... until the download of the vehicle communication data requested by the terminal is completed.
  • a data transmission apparatus for vehicle communication comprising: a first receiving unit, configured to receive a data download request sent by the terminal; and an acquiring unit, configured to receive according to the first The data download request received by the unit, from the network side service And acquiring, by the server, the vehicle communication data that the terminal requests to download; the data transmission unit is configured to transmit the vehicle communication data to the terminal; and the first prediction unit is configured to predict an area that the terminal is to enter, And determining that the coverage includes the second roadside unit of the area; and the processing unit, configured to: when the terminal is about to exit the coverage of the first roadside unit, if the terminal has not completely received the vehicle communication requesting to download Data, sending a notification message to the second roadside unit to continue transmitting the vehicle communication data to the terminal by the second roadside unit when the terminal enters the coverage of the second roadside unit .
  • the first roadside unit predicts an area to be entered by the terminal in the process of transmitting the vehicle communication data to the terminal, and determines that the coverage includes the second roadside unit of the area, and is to be driven at the terminal.
  • the coverage of the first roadside unit is out, if the terminal has not completely received the vehicle communication data requesting the download, the first roadside unit sends a notification message to the second roadside unit, so that the terminal enters the second roadside unit.
  • the second roadside unit can continue to transmit the vehicle communication data to the terminal, thereby avoiding the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered.
  • the technical effect that multiple roadside units cooperate to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication data, and is beneficial to improving the user experience.
  • the acquiring unit includes: a second prediction unit, configured to predict, according to the travel information included in the data download request, that the terminal is in a coverage area of the first roadside unit The driving time is long; the first executing unit is configured to acquire and cache the corresponding size of the vehicle communication data from the network side server according to the data transmission rate and the driving duration.
  • the vehicle communication data of the corresponding size is acquired and cached from the network side server according to the data transmission rate and the predicted travel time of the terminal in the coverage of the first roadside unit, so that all the cache terminals can be avoided.
  • the requested vehicle communication data increases the buffer pressure of the roadside unit.
  • the first prediction unit includes: a second receiving unit, configured to receive driving information periodically reported by the terminal; and a determining unit, configured to periodically report according to the terminal Driving information and stored historical position information of the terminal, determining a motion trajectory of the terminal; and second execution unit, configured to predict according to a motion trajectory of the terminal The area to which the terminal is to enter, and determining that the coverage includes the second roadside unit of the area.
  • the driving information includes a combination of any one or more of the following: a vehicle identification, a real-time position, a traveling speed, a driving acceleration, and a traveling direction.
  • the method further includes: a detecting unit, configured to detect whether another terminal requests to download the vehicle communication data within a predetermined time; and a deleting unit, configured to detect, at the detecting unit, The cached vehicle communication data is deleted when no other terminal requests to download the vehicle communication data within the predetermined time.
  • the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the buffer pressure of the side unit by deleting the cached vehicle communication data when no other terminal requests to download the downloaded vehicle communication data within a predetermined time, the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the notification message sent by the processing unit to the second roadside unit includes: receiving, by the terminal, the vehicle communication data, the terminal driving in The time of the second roadside unit and the position information of the terminal entering the second roadside unit.
  • a data transmission apparatus for vehicle communication comprising: a receiving unit, configured to receive a notification message sent by a first roadside unit, wherein the notification message is the terminal a data transmission unit for driving at the terminal when the coverage of the first roadside unit is to be taken out and the vehicle communication data requesting download is not completely received
  • the vehicle communication data is continuously transmitted to the terminal according to the notification message.
  • the second roadside unit receives the notification message sent by the first roadside unit, and when the terminal enters the coverage of the second roadside unit, the second roadside unit continues according to the received notification message. Transmitting the vehicle communication data to the terminal avoids the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered, and the multiple roadside unit cooperation is realized.
  • the technical effect of the terminal transmitting data effectively shortens the transmission time of the vehicle communication data, and is beneficial to improving the user experience.
  • the method further includes: a prediction unit, configured to predict an area that the terminal is to enter, and determine that the coverage includes other roadside units of the area; And, when the terminal is about to leave the coverage of the second roadside unit, if the terminal still does not completely receive the vehicle communication data requesting the download, send a notification message to the other roadside unit. And, when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal.
  • a prediction unit configured to predict an area that the terminal is to enter, and determine that the coverage includes other roadside units of the area. And, when the terminal is about to leave the coverage of the second roadside unit, if the terminal still does not completely receive the vehicle communication data requesting the download, send a notification message to the other roadside unit. And, when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal.
  • the second roadside unit may send the coverage to the other roadside unit including the area where the terminal is to enter.
  • the notification message is that when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal, ensuring that the data is transmitted to the terminal through cooperation of the plurality of roadside units, thereby effectively shortening the vehicle communication data.
  • the transmission time is long, which is beneficial to enhance the user experience.
  • the first roadside unit transmits the vehicle communication data to the terminal, when the terminal is about to exit the coverage of the first roadside unit, If the data transmission has not been completed, the first road side unit sends a notification message to the second road side unit to which the terminal is to be driven, so that when the terminal enters the coverage of the second road side unit, the second road is The side unit continues to transmit vehicle communication data to the terminal; when the terminal is about to exit the coverage of the second roadside unit, if the data transmission has not been completed, the second roadside unit will enter the third roadside unit to which the terminal is to enter The notification message is sent so that when the terminal enters the coverage of the third roadside unit, the third roadside unit continues to transmit the vehicle communication data to the terminal; ... until the download of the vehicle communication data requested by the terminal is completed.
  • a roadside unit comprising: a data transmission device for vehicle communication as set forth in the above third aspect; and/or
  • a data transmission apparatus for vehicle communication as proposed in the above fourth aspect.
  • the roadside unit may be in a base station form or a terminal form.
  • the roadside units exchange information through the X2 interface; when the roadside unit is in the terminal form, the plurality of roadside units are directly connected through the terminal. Information interaction.
  • FIG. 1 is a schematic diagram showing a vehicle receiving data between different roadside units in the related art
  • FIG. 2 is a schematic flow chart showing a data transmission method for vehicle communication according to a first embodiment of the present invention
  • Figure 3 shows a schematic block diagram of a data transmission device for vehicle communication in accordance with a first embodiment of the present invention
  • FIG. 4 is a schematic flow chart showing a data transmission method for vehicle communication according to a second embodiment of the present invention.
  • Figure 5 shows a schematic block diagram of a data transmission device for vehicle communication in accordance with a second embodiment of the present invention
  • FIG. 6 shows a schematic diagram of a vehicle receiving data between different roadside units in accordance with an embodiment of the present invention
  • Fig. 7 shows a schematic flow chart of a data transmission method for vehicle communication in accordance with a third embodiment of the present invention.
  • Fig. 2 shows a schematic flow chart of a data transmission method for vehicle communication according to a first embodiment of the present invention.
  • a data transmission method for vehicle communication includes:
  • Step 202 The first roadside unit receives a data download request sent by the terminal.
  • Step 204 Acquire and cache the vehicle communication data requested by the terminal from the network side server according to the data download request.
  • Step 206 transmitting the vehicle communication data to the terminal
  • Step 208 predicting an area that the terminal is to enter, and determining that the coverage includes a second roadside unit of the area;
  • Step 210 When the terminal is about to leave the coverage of the first roadside unit, if the terminal has not completely received the vehicle communication data for downloading, the first roadside unit is to the second The roadside unit transmits a notification message to continue transmission of the vehicle communication data to the terminal by the second roadside unit when the terminal enters the coverage of the second roadside unit.
  • the first roadside unit predicts an area to be entered by the terminal in the process of transmitting the vehicle communication data to the terminal, and determines that the coverage includes the second roadside unit of the area, and is to be driven at the terminal.
  • the coverage of the first roadside unit is out, if the terminal has not completely received the vehicle communication data requesting the download, the first roadside unit sends a notification message to the second roadside unit, so that the terminal enters the second roadside unit.
  • the second roadside unit can continue to transmit the vehicle communication data to the terminal, thereby avoiding the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered.
  • the technical effect that multiple roadside units cooperate to transmit data for the terminal is realized, which effectively shortens the transmission duration of the vehicle communication data, and is beneficial to improving the user experience.
  • the step of acquiring and caching the vehicle communication data requested by the terminal from the network side server according to the data download request specifically: according to the travel information included in the data download request Predicting a travel duration of the terminal in a coverage area of the first roadside unit; and acquiring and buffering vehicle communication data of a corresponding size from the network side server according to a data transmission rate and the travel duration.
  • the vehicle communication data of the corresponding size is acquired and cached from the network side server according to the data transmission rate and the predicted travel time of the terminal in the coverage of the first roadside unit, so that all the cache terminals can be avoided.
  • the requested vehicle communication data increases the buffer pressure of the roadside unit.
  • the step of predicting an area to be entered by the terminal specifically includes: receiving travel information periodically reported by the terminal; and driving information and stored according to the terminal periodically reported by the terminal Determining the operation of the terminal by historical location information of the terminal a trajectory; predicting an area in which the terminal is to enter according to a motion trajectory of the terminal.
  • the driving information includes a combination of any one or more of the following: a vehicle identification, a real-time position, a traveling speed, a driving acceleration, and a traveling direction.
  • any one of the above technical solutions preferably, further comprising: detecting whether another terminal requests to download the vehicle communication data within a predetermined time; if no other terminal requests to download the vehicle communication data within the predetermined time, The cached vehicle communication data is deleted.
  • the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the buffer pressure of the side unit by deleting the cached vehicle communication data when no other terminal requests to download the downloaded vehicle communication data within a predetermined time, the temporarily useless data cached in the roadside unit can be cleared in time to reduce the road.
  • the notification message sent to the second roadside unit includes: receiving, by the terminal, the vehicle communication data, and the terminal entering the second road The time of the side unit and the position information of the terminal entering the second road side unit.
  • Fig. 3 shows a schematic block diagram of a data transmission device for vehicle communication in accordance with a first embodiment of the present invention.
  • a data transmission apparatus 300 for vehicle communication includes: a first receiving unit 302, an obtaining unit 304, a data transmission unit 306, a first prediction unit 308, and processing.
  • Unit 310 a data transmission apparatus 300 for vehicle communication.
  • the first receiving unit 302 is configured to receive a data download request sent by the terminal, and the acquiring unit 304 is configured to acquire and cache the data from the network side server according to the data download request received by the first receiving unit 302.
  • the terminal requests the downloaded vehicle communication data;
  • the data transmission unit 306 is configured to transmit the vehicle communication data to the terminal;
  • the first prediction unit 308 is configured to predict an area that the terminal is to enter, and determine that the coverage includes a second roadside unit of the area;
  • the processing unit 310 is configured to: when the terminal is about to exit the coverage of the first roadside unit, if the terminal has not completely received the vehicle communication data for downloading,
  • the second roadside unit transmits a notification message to continue transmission of the vehicle communication data to the terminal by the second roadside unit when the terminal enters the coverage of the second roadside unit.
  • the first roadside unit predicts an area to be entered by the terminal in the process of transmitting the vehicle communication data to the terminal, and determines that the coverage includes the second roadside unit of the area, and is to be driven at the terminal.
  • the coverage of the first side unit is exceeded, if the terminal is not fully connected
  • the first roadside unit transmits a notification message to the second roadside unit, so that when the terminal enters the coverage of the second roadside unit, the second roadside unit can continue to transmit the vehicle to the terminal.
  • the communication data avoids the problem that the data reception time is too long when the data is retransmitted every time the new roadside unit coverage is entered, and the technical effect of the plurality of roadside units cooperating to transmit data for the terminal is realized. It effectively shortens the transmission time of vehicle communication data and helps to enhance the user experience.
  • the obtaining unit 304 includes: a second prediction unit 3042, configured to predict, according to the travel information included in the data download request, the coverage of the terminal in the first roadside unit The driving duration in the range; the first executing unit 3044 is configured to acquire and cache the corresponding size of the vehicle communication data from the network side server according to the data transmission rate and the driving duration.
  • the vehicle communication data of the corresponding size is acquired and cached from the network side server according to the data transmission rate and the predicted travel time of the terminal in the coverage of the first roadside unit, so that all the cache terminals can be avoided.
  • the requested vehicle communication data increases the buffer pressure of the roadside unit.
  • the first prediction unit 308 includes: a second receiving unit 3082, configured to receive driving information periodically reported by the terminal; and a determining unit 3084, configured to use, according to the terminal period, Determining the movement trajectory of the terminal and the stored historical position information of the terminal; the second execution unit 3086 is configured to predict an area to be entered by the terminal according to the motion trajectory of the terminal, And determining that the coverage includes the second roadside unit of the area.
  • the driving information includes a combination of any one or more of the following: a vehicle identification, a real-time position, a traveling speed, a driving acceleration, and a traveling direction.
  • the method further includes: a detecting unit 312, configured to detect whether another terminal requests to download the vehicle communication data within a predetermined time; and a deleting unit 314, configured to detect at the detecting unit 312 The cached vehicle communication data is deleted when no other terminal requests to download the vehicle communication data within the predetermined time.
  • the cached vehicle communication data is deleted, and the roadside list can be cleared in time. Temporarily useless data cached in the meta to reduce the buffer pressure of the roadside unit.
  • the notification message sent by the processing unit 310 to the second roadside unit includes: receiving, by the terminal, the vehicle communication data, and the terminal driving in a timing of the second roadside unit and position information of the terminal entering the second roadside unit.
  • Fig. 4 shows a schematic flow chart of a data transmission method for vehicle communication according to a second embodiment of the present invention.
  • a data transmission method for vehicle communication includes:
  • Step 402 The second roadside unit receives the notification message sent by the first roadside unit, where the notification message is that the terminal is about to leave the coverage of the first roadside unit, and has not completely received the request.
  • the downloaded vehicle communication data is sent by the first roadside unit;
  • Step 404 When the terminal enters the coverage of the second roadside unit, the second roadside unit continues to transmit the vehicle communication data to the terminal according to the notification message.
  • the second roadside unit receives the notification message sent by the first roadside unit, and when the terminal enters the coverage of the second roadside unit, the second roadside unit continues according to the received notification message. Transmitting the vehicle communication data to the terminal avoids the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered, and the multiple roadside unit cooperation is realized.
  • the technical effect of the terminal transmitting data effectively shortens the transmission time of the vehicle communication data, and is beneficial to improving the user experience.
  • the method further includes: predicting an area where the terminal is to enter, and determining that the coverage includes other roadside units of the area; and the terminal is about to exit the second road side unit If the terminal still does not completely receive the vehicle communication data requesting the download, the notification message is sent to the other roadside unit to enter the coverage of the other roadside unit when the terminal enters the coverage of the other roadside unit.
  • the vehicle communication data is continuously transmitted to the terminal by the other roadside unit.
  • the second roadside unit may send the coverage to the other roadside unit including the area where the terminal is to enter. Notification message to cover the access of other roadside units at the terminal In the range, the other roadside units continue to transmit vehicle communication data to the terminal, ensuring that data is transmitted to the terminal through cooperation of the plurality of roadside units, thereby effectively shortening the transmission duration of the vehicle communication data, and improving the user experience.
  • the first roadside unit transmits the vehicle communication data to the terminal, when the terminal is about to exit the coverage of the first roadside unit, If the data transmission has not been completed, the first road side unit sends a notification message to the second road side unit to which the terminal is to be driven, so that when the terminal enters the coverage of the second road side unit, the second road is The side unit continues to transmit vehicle communication data to the terminal; when the terminal is about to exit the coverage of the second roadside unit, if the data transmission has not been completed, the second roadside unit will enter the third roadside unit to which the terminal is to enter The notification message is sent so that when the terminal enters the coverage of the third roadside unit, the third roadside unit continues to transmit the vehicle communication data to the terminal; ... until the download of the vehicle communication data requested by the terminal is completed.
  • Figure 5 shows a schematic block diagram of a data transmission device for vehicle communication in accordance with a second embodiment of the present invention.
  • a data transmission apparatus 500 for vehicle communication includes a receiving unit 502 and a data transmission unit 504.
  • the receiving unit 502 is configured to receive a notification message sent by the first roadside unit, where the notification message is that the terminal is out of coverage of the first roadside unit, and the request has not been completely received.
  • the data transmission unit 504 is configured to continue to the notification according to the notification message when the terminal enters the coverage of the second roadside unit The terminal transmits the vehicle communication data.
  • the second roadside unit receives the notification message sent by the first roadside unit, and when the terminal enters the coverage of the second roadside unit, the second roadside unit continues according to the received notification message. Transmitting the vehicle communication data to the terminal avoids the problem that the data reception time is too long when the data is retransmitted each time the new roadside unit coverage is entered, and the multiple roadside unit cooperation is realized.
  • the technical effect of the terminal transmitting data effectively shortens the transmission time of the vehicle communication data, and is beneficial to improving the user experience.
  • the method further includes: a prediction unit 506, configured to predict an area where the terminal is to enter, and determine that the coverage includes other roadside units of the area;
  • the unit 508 is configured to send, when the terminal is about to leave the coverage of the second roadside unit, if the terminal still does not completely receive the vehicle communication data requesting the download, send the vehicle communication data to the other roadside unit.
  • a notification message wherein when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal.
  • the second roadside unit may send the coverage to the other roadside unit including the area where the terminal is to enter.
  • the notification message is that when the terminal enters the coverage of the other roadside unit, the other roadside unit continues to transmit the vehicle communication data to the terminal, ensuring that the data is transmitted to the terminal through cooperation of the plurality of roadside units, thereby effectively shortening the vehicle communication data.
  • the transmission time is long, which is beneficial to enhance the user experience.
  • the first roadside unit transmits the vehicle communication data to the terminal, when the terminal is about to exit the coverage of the first roadside unit, If the data transmission has not been completed, the first road side unit sends a notification message to the second road side unit to which the terminal is to be driven, so that when the terminal enters the coverage of the second road side unit, the second road is The side unit continues to transmit vehicle communication data to the terminal; when the terminal is about to exit the coverage of the second roadside unit, if the data transmission has not been completed, the second roadside unit will enter the third roadside unit to which the terminal is to enter The notification message is sent so that when the terminal enters the coverage of the third roadside unit, the third roadside unit continues to transmit the vehicle communication data to the terminal; ... until the download of the vehicle communication data requested by the terminal is completed.
  • the step of transmitting the vehicle communication data to the terminal by any of the roadside units may be the same as the first roadside unit, that is, first predicting the travel duration of the terminal in any one of the roadside units, and then according to the data transmission rate and the predicted travel duration, A corresponding size of vehicle communication data is acquired and cached in the network side server.
  • the present invention also proposes a roadside unit (not shown) comprising: a data transmission device 300 for vehicle communication as shown in FIG. 3; and/or
  • a data transmission device 500 for vehicle communication as shown in FIG. 1 A data transmission device 500 for vehicle communication as shown in FIG.
  • the roadside unit may be in the form of a base station or a terminal.
  • the roadside units exchange information through the X2 interface; when the roadside unit is in the terminal form, the plurality of roadside units are directly connected through the terminal. Information interaction.
  • the basic idea of the technical solution of the present invention is that the current RSU predicts the neighboring RSUs and the entry moments that may be entered based on the vehicle travel information and the historical location, notifies the neighboring RSUs of the necessary information, and causes the neighboring RSUs to cache the data downloads in advance.
  • the seamless connection of terminal data transmission to shorten the overall download time and improve the user experience.
  • the vehicle 602 sends a download request for the content of interest to the RSU 604 that is currently in coverage.
  • the request includes driving information (including vehicle identification, position, speed, acceleration, direction, and the like) of the vehicle at the current time, downloading content information, and the like.
  • driving information including vehicle identification, position, speed, acceleration, direction, and the like
  • the RSU 604 initializes the cached content in response to the download request of the vehicle 602.
  • the RSU 604 predicts the motion trajectory of the vehicle according to the request information of the vehicle 602 and its historical position information of the RSU 604, thereby determining the duration T1 of the vehicle 602 in the coverage of the RSU 604, and taking a certain size from the network side server according to T1.
  • the data is cached at RSU 604 while vehicle 602 downloads content from RSU 604.
  • the RSU 604 predicts the neighboring RSU 606 that the vehicle may enter and the time of entry, and notifies the neighboring RSU 606 of the necessary information by means of D2D (Device to Device).
  • the vehicle 602 periodically reports the travel information to the RSU 604.
  • the RSU 604 predicts the motion trajectory of the vehicle 602 based on the report information of the vehicle 602 and its historical position information of the RSU 604, and determines the neighboring RSU 606 that the vehicle 602 may enter.
  • the information necessary for the neighboring RSU 606 is notified by the D2D method, including the time, location, size of the remaining data, and time stamp of the vehicle 602.
  • the neighboring RSU 606 initializes the cached content and continues to transmit data to the vehicle 602.
  • the neighboring RSU 606 predicts the motion trajectory of the vehicle 602 based on the necessary information notified by the RSU 604 and the historical position information of the vehicle 602 at the RSU 606, thereby determining the duration T2 of the coverage of the vehicle 602 at the RSU 606, remaining according to T2.
  • the timestamp of the data is buffered from the starting location with a certain amount of data to the neighboring RSU 606, and the vehicle 602 downloads the content from the neighboring RSU 606 at the time of entry.
  • the neighboring RSU 606 becomes the RSU 604 and repeats execution. Step 3 above, until the vehicle 602 completes the download of the data.
  • the RSU clears or updates the local cached content after a certain period of time.
  • the vehicle 602 After the vehicle 602 exits any RSU, it checks every time T3. If the data requested by the vehicle 602 is not requested by another vehicle, it indicates that the content heat is reduced, and the cache can be cleared in the RSU local cache. ; otherwise, update the local cache content incrementally.
  • step 702 the vehicle sends a download request for the content of interest to the current RSU x .
  • Step 704 the current RSU x initializes the cached content in response to the download request of the vehicle.
  • Step 706 it is determined whether the content requested by the vehicle is downloaded, and if yes, step 714 is performed; otherwise, step 708 is performed.
  • Step 708 the current RSU x notifies the information necessary for the neighboring RSU y based on the trajectory prediction by the D2D mode, and performs steps 714 and 710.
  • step 710 the cached content is initialized adjacent to the RSU y in response to the download request of the vehicle.
  • step 712 the neighboring RSU y becomes the current RSUx and returns to step 706.
  • step 714 the current RSU x clears or incrementally updates the local cached content.
  • the RSU 604 is the RSU x shown in FIG. 7
  • the RSU 606 is the RSU y shown in FIG.
  • the technical solution of the above embodiment of the present invention solves the problem that the interesting content cannot be completely downloaded in one RSU area due to the high speed running of the vehicle, thereby effectively shortening the time spent in the entire downloading process and improving the user experience.
  • the present invention proposes a new data transmission scheme for vehicle communication, which realizes the technical effect of multiple roadside units cooperating to transmit data for the terminal, and avoids related technologies.
  • the data transmission time is too long, resulting in a problem that the data reception time is too long, which effectively shortens the transmission time of the vehicle communication data, and is beneficial to improving the user experience.

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Abstract

本发明提供了一种用于车辆通信的数据传输方法及数据传输装置和路侧单元，数据传输方法包括：第一路侧单元接收终端发送的数据下载请求；根据数据下载请求，从网络侧服务器中获取并缓存终端请求下载的车辆通信数据；向终端传输车辆通信数据；预测终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；在终端将要驶出第一路侧单元的覆盖范围时，若终端尚未完全接收到车辆通信数据，则第一路侧单元向第二路侧单元发送通知消息，以在终端进入第二路侧单元的覆盖范围时，由第二路侧单元继续向终端传输车辆通信数据。本发明实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。

Description

用于车辆通信的数据传输方法及数据传输装置、路侧单元 技术领域
本发明涉及通信技术领域，具体而言，涉及一种用于车辆通信的数据传输方法、一种用于车辆通信的数据传输装置和一种路侧单元。
背景技术
V2X(Vehicle to X，车到特定目标的通信)是3GPP RAN#68批准设立的项目，主要研究基于3GPP通信协议的车辆数据传输方案。近年来，V2X通信在提供交通安全服务、车辆交通管理、信息娱乐服务等方面发挥着越来越重要的作用。V2X的通信方式包括：V2V(Vehicle to Vehicle，车到车通信)、V2P(Vehicle to Individual Person，车到人通信)、V2I(Vehicle to Infrastructure，车到路通信)等。
其中，V2I通信的主要特点包括：1)RSU(Road Side Unit，路侧单元)只针对其所覆盖的局部范围进行广播；2)RSU具备一定的数据存储和运算能力，能够快速、准确地探测到路况、行车和交通状况等并对这些信息进行过滤、处理、排序、预测之后再发送给车辆。
上述两个方面提高了V2I通信时消息传输的可靠性和实时性。车辆在沿道路行驶的过程中，通过道路沿线部署的RSU接入LTE网络，从而从网络侧的应用服务器获取交通和娱乐服务等内容。具体如图1所示，当车辆102处在路侧单元104的覆盖区域时，可以通过路侧单元104获取网络侧实体和服务器簇中的数据；当车辆102’处在路侧单元106的覆盖区域时，可以通过路侧单元106获取网络侧实体和服务器簇中的数据。
由于通过RSU接入LTE(Long Term Evolution，长期演进)网络的车辆都处于高速移动状态，因此车辆在某个特定RSU覆盖范围内行驶时间有限，车辆不能完整地接收感兴趣的内容。例如某些内容属于大批量数据，无法在一个路侧单元覆盖范围内完成下载，如果每次进入新的RSU 覆盖区都要重新建立内容下载过程，势必会延长下载时间，影响用户的体验。
因此，如何能够缩短车辆通信数据的下载时间，提升用户的体验成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的用于车辆通信的数据传输方案，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
有鉴于此，根据本发明的第一方面，提出了一种用于车辆通信的数据传输方法，包括：第一路侧单元接收终端发送的数据下载请求；根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据；向所述终端传输所述车辆通信数据；预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；在所述终端将要驶出所述第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则所述第一路侧单元向所述第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，第一路侧单元通过在向终端传输车辆通信数据的过程中，预测终端将要驶入的区域，并确定覆盖范围包括该区域的第二路侧单元，并在终端将要驶出第一路侧单元的覆盖范围时，若终端尚未完全接收到请求下载的车辆通信数据，则第一路侧单元向第二路侧单元发送通知消息，使得在终端进入第二路侧单元的覆盖范围时，第二路侧单元能够继续向终端传输车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据的步骤，具体包括：根 据所述数据下载请求中包含的行驶信息，预测所述终端在所述第一路侧单元的覆盖范围中的行驶时长；根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
在该技术方案中，通过根据数据传输速率和预测的终端在第一路侧单元的覆盖范围中的行驶时长，从网络侧服务器中获取并缓存相应大小的车辆通信数据，使得能够避免全部缓存终端请求的车辆通信数据而增加路侧单元的缓存压力。
在上述任一技术方案中，优选地，预测所述终端将要驶入的区域的步骤，具体包括：接收所述终端周期性上报的行驶信息；根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运动轨迹；根据所述终端的运动轨迹，预测所述终端将要驶入的区域。
在上述任一技术方案中，优选地，所述行驶信息包括以下任一或多个的组合：车辆标识、实时位置、行驶速度、行驶加速度、行驶方向。
在上述任一技术方案中，优选地，还包括：检测在预定时间内是否有其它终端请求下载所述车辆通信数据；若在所述预定时间内没有其它终端请求下载所述车辆通信数据，则删除缓存的所述车辆通信数据。
在该技术方案中，通过在预定时间内没有其它终端请求下载某终端已下载的车辆通信数据时，删除缓存的车辆通信数据，可以及时清除路侧单元中缓存的暂时无用的数据，以降低路侧单元的缓存压力。
在上述任一技术方案中，优选地，向所述第二路侧单元发送的所述通知消息包括：所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
根据本发明的第二方面，还提出了一种用于车辆通信的数据传输方法，包括：第二路侧单元接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；在所述终端驶入所述第二路侧单元的覆盖范围时，所述第二路侧单元根据所述通知消息继续向所述终端传输所述车辆通信数据。
在该技术方案中，第二路侧单元通过接收第一路侧单元发送的通知消 息，并在终端驶入第二路侧单元的覆盖范围时，由第二路侧单元根据接收到通知消息继续向终端传输所述车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，还包括：预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，若终端请求下载的车辆通信数据在第二路侧单元中仍然无法完成下载，则可以由第二路侧单元向覆盖范围包括终端将要驶入的区域的其它路侧单元发送通知消息，以在终端进入其它路侧单元的覆盖范围时，由其它路侧单元继续向终端传输车辆通信数据，确保通过多个路侧单元的协同来向终端传输数据，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
具体来说，当终端在第一路侧单元的覆盖范围内请求下载车辆通信数据时，第一路侧单元向终端传输车辆通信数据，在终端将要驶出第一路侧单元的覆盖范围时，若还没有完成数据的传输，则第一路侧单元向终端将要驶入的第二路侧单元发送通知消息，以使终端在驶入第二路侧单元的覆盖范围内时，由第二路侧单元继续向终端传输车辆通信数据；在终端将要驶出第二路侧单元的覆盖范围时，若还没有完成数据的传输，则第二路侧单元向终端将要驶入的第三路侧单元发送通知消息，以使终端在驶入第三路侧单元的覆盖范围内时，由第三路侧单元继续向终端传输车辆通信数据；……直到终端请求下载的车辆通信数据下载完成。
根据本发明的第三方面，还提出了一种用于车辆通信的数据传输装置，包括：第一接收单元，用于接收终端发送的数据下载请求；获取单元，用于根据所述第一接收单元接收到的所述数据下载请求，从网络侧服 务器中获取并缓存所述终端请求下载的车辆通信数据；数据传输单元，用于向所述终端传输所述车辆通信数据；第一预测单元，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；处理单元，用于在所述终端将要驶出第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则向第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，第一路侧单元通过在向终端传输车辆通信数据的过程中，预测终端将要驶入的区域，并确定覆盖范围包括该区域的第二路侧单元，并在终端将要驶出第一路侧单元的覆盖范围时，若终端尚未完全接收到请求下载的车辆通信数据，则第一路侧单元向第二路侧单元发送通知消息，使得在终端进入第二路侧单元的覆盖范围时，第二路侧单元能够继续向终端传输车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，所述获取单元包括：第二预测单元，用于根据所述数据下载请求中包含的行驶信息，预测所述终端在所述第一路侧单元的覆盖范围中的行驶时长；第一执行单元，用于根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
在该技术方案中，通过根据数据传输速率和预测的终端在第一路侧单元的覆盖范围中的行驶时长，从网络侧服务器中获取并缓存相应大小的车辆通信数据，使得能够避免全部缓存终端请求的车辆通信数据而增加路侧单元的缓存压力。
在上述任一技术方案中，优选地，所述第一预测单元包括：第二接收单元，用于接收所述终端周期性上报的行驶信息；判断单元，用于根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运动轨迹；第二执行单元，用于根据所述终端的运动轨迹，预测 所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元。
在上述任一技术方案中，优选地，所述行驶信息包括以下任一或多个的组合：车辆标识、实时位置、行驶速度、行驶加速度、行驶方向。
在上述任一技术方案中，优选地，还包括：检测单元，用于检测在预定时间内是否有其它终端请求下载所述车辆通信数据；删除单元，用于在所述检测单元检测到在所述预定时间内没有其它终端请求下载所述车辆通信数据时，删除缓存的所述车辆通信数据。
在该技术方案中，通过在预定时间内没有其它终端请求下载某终端已下载的车辆通信数据时，删除缓存的车辆通信数据，可以及时清除路侧单元中缓存的暂时无用的数据，以降低路侧单元的缓存压力。
在上述任一技术方案中，优选地，所述处理单元向所述第二路侧单元发送的所述通知消息包括：所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
根据本发明的第四方面，还提出了一种用于车辆通信的数据传输装置，包括：接收单元，用于接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；数据传输单元，用于在所述终端驶入第二路侧单元的覆盖范围时，根据所述通知消息继续向所述终端传输所述车辆通信数据。
在该技术方案中，第二路侧单元通过接收第一路侧单元发送的通知消息，并在终端驶入第二路侧单元的覆盖范围时，由第二路侧单元根据接收到通知消息继续向终端传输所述车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，还包括：预测单元，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；处理单 元，用于在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，若终端请求下载的车辆通信数据在第二路侧单元中仍然无法完成下载，则可以由第二路侧单元向覆盖范围包括终端将要驶入的区域的其它路侧单元发送通知消息，以在终端进入其它路侧单元的覆盖范围时，由其它路侧单元继续向终端传输车辆通信数据，确保通过多个路侧单元的协同来向终端传输数据，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
具体来说，当终端在第一路侧单元的覆盖范围内请求下载车辆通信数据时，第一路侧单元向终端传输车辆通信数据，在终端将要驶出第一路侧单元的覆盖范围时，若还没有完成数据的传输，则第一路侧单元向终端将要驶入的第二路侧单元发送通知消息，以使终端在驶入第二路侧单元的覆盖范围内时，由第二路侧单元继续向终端传输车辆通信数据；在终端将要驶出第二路侧单元的覆盖范围时，若还没有完成数据的传输，则第二路侧单元向终端将要驶入的第三路侧单元发送通知消息，以使终端在驶入第三路侧单元的覆盖范围内时，由第三路侧单元继续向终端传输车辆通信数据；……直到终端请求下载的车辆通信数据下载完成。
根据本发明的第五方面，还提出了一种路侧单元，包括：如上述第三方面中提出的用于车辆通信的数据传输装置；和/或
如上述第四方面中提出的用于车辆通信的数据传输装置。
其中，所述路侧单元可以为基站形态或终端形态。当所述路侧单元为基站形态时，所述路侧单元之间通过X2接口实现信息的交互；当所述路侧单元为终端形态时，多个路侧单元之间通过终端直连通信实现信息的交互。
通过以上技术方案，实现了多个路侧单元协同为终端传输数据的技术效果，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
附图说明
图1示出了相关技术中车辆在不同路侧单元之间接收数据的示意图；
图2示出了根据本发明的第一个实施例的用于车辆通信的数据传输方法的示意流程图；
图3示出了根据本发明的第一个实施例的用于车辆通信的数据传输装置的示意框图；
图4示出了根据本发明的第二个实施例的用于车辆通信的数据传输方法的示意流程图；
图5示出了根据本发明的第二个实施例的用于车辆通信的数据传输装置的示意框图；
图6示出了根据本发明的实施例的车辆在不同路侧单元之间接收数据的示意图；
图7示出了根据本发明的第三个实施例的用于车辆通信的数据传输方法的示意流程图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图2示出了根据本发明的第一个实施例的用于车辆通信的数据传输方法的示意流程图。
如图2所示，根据本发明的第一个实施例的用于车辆通信的数据传输方法，包括：
步骤202，第一路侧单元接收终端发送的数据下载请求；
步骤204，根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据；
步骤206，向所述终端传输所述车辆通信数据；
步骤208，预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；
步骤210，在所述终端将要驶出所述第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则所述第一路侧单元向所述第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，第一路侧单元通过在向终端传输车辆通信数据的过程中，预测终端将要驶入的区域，并确定覆盖范围包括该区域的第二路侧单元，并在终端将要驶出第一路侧单元的覆盖范围时，若终端尚未完全接收到请求下载的车辆通信数据，则第一路侧单元向第二路侧单元发送通知消息，使得在终端进入第二路侧单元的覆盖范围时，第二路侧单元能够继续向终端传输车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据的步骤，具体包括：根据所述数据下载请求中包含的行驶信息，预测所述终端在所述第一路侧单元的覆盖范围中的行驶时长；根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
在该技术方案中，通过根据数据传输速率和预测的终端在第一路侧单元的覆盖范围中的行驶时长，从网络侧服务器中获取并缓存相应大小的车辆通信数据，使得能够避免全部缓存终端请求的车辆通信数据而增加路侧单元的缓存压力。
在上述任一技术方案中，优选地，预测所述终端将要驶入的区域的步骤，具体包括：接收所述终端周期性上报的行驶信息；根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运 动轨迹；根据所述终端的运动轨迹，预测所述终端将要驶入的区域。
在上述任一技术方案中，优选地，所述行驶信息包括以下任一或多个的组合：车辆标识、实时位置、行驶速度、行驶加速度、行驶方向。
在上述任一技术方案中，优选地，还包括：检测在预定时间内是否有其它终端请求下载所述车辆通信数据；若在所述预定时间内没有其它终端请求下载所述车辆通信数据，则删除缓存的所述车辆通信数据。
在该技术方案中，通过在预定时间内没有其它终端请求下载某终端已下载的车辆通信数据时，删除缓存的车辆通信数据，可以及时清除路侧单元中缓存的暂时无用的数据，以降低路侧单元的缓存压力。
在上述任一技术方案中，优选地，向所述第二路侧单元发送的所述通知消息包括：所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
图3示出了根据本发明的第一个实施例的用于车辆通信的数据传输装置的示意框图。
如图3所示，根据本发明的第一个实施例的用于车辆通信的数据传输装置300，包括：第一接收单元302、获取单元304、数据传输单元306、第一预测单元308、处理单元310。
其中，第一接收单元302，用于接收终端发送的数据下载请求；获取单元304，用于根据所述第一接收单元302接收到的所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据；数据传输单元306，用于向所述终端传输所述车辆通信数据；第一预测单元308，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；处理单元310，用于在所述终端将要驶出第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则向第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，第一路侧单元通过在向终端传输车辆通信数据的过程中，预测终端将要驶入的区域，并确定覆盖范围包括该区域的第二路侧单元，并在终端将要驶出第一路侧单元的覆盖范围时，若终端尚未完全接 收到请求下载的车辆通信数据，则第一路侧单元向第二路侧单元发送通知消息，使得在终端进入第二路侧单元的覆盖范围时，第二路侧单元能够继续向终端传输车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，所述获取单元304包括：第二预测单元3042，用于根据所述数据下载请求中包含的行驶信息，预测所述终端在所述第一路侧单元的覆盖范围中的行驶时长；第一执行单元3044，用于根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
在该技术方案中，通过根据数据传输速率和预测的终端在第一路侧单元的覆盖范围中的行驶时长，从网络侧服务器中获取并缓存相应大小的车辆通信数据，使得能够避免全部缓存终端请求的车辆通信数据而增加路侧单元的缓存压力。
在上述任一技术方案中，优选地，所述第一预测单元308包括：第二接收单元3082，用于接收所述终端周期性上报的行驶信息；判断单元3084，用于根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运动轨迹；第二执行单元3086，用于根据所述终端的运动轨迹，预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元。
在上述任一技术方案中，优选地，所述行驶信息包括以下任一或多个的组合：车辆标识、实时位置、行驶速度、行驶加速度、行驶方向。
在上述任一技术方案中，优选地，还包括：检测单元312，用于检测在预定时间内是否有其它终端请求下载所述车辆通信数据；删除单元314，用于在所述检测单元312检测到在所述预定时间内没有其它终端请求下载所述车辆通信数据时，删除缓存的所述车辆通信数据。
在该技术方案中，通过在预定时间内没有其它终端请求下载某终端已下载的车辆通信数据时，删除缓存的车辆通信数据，可以及时清除路侧单 元中缓存的暂时无用的数据，以降低路侧单元的缓存压力。
在上述任一技术方案中，优选地，所述处理单元310向所述第二路侧单元发送的所述通知消息包括：所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
图4示出了根据本发明的第二个实施例的用于车辆通信的数据传输方法的示意流程图。
如图4所示，根据本发明的第二个实施例的用于车辆通信的数据传输方法，包括：
步骤402，第二路侧单元接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；
步骤404，在所述终端驶入所述第二路侧单元的覆盖范围时，所述第二路侧单元根据所述通知消息继续向所述终端传输所述车辆通信数据。
在该技术方案中，第二路侧单元通过接收第一路侧单元发送的通知消息，并在终端驶入第二路侧单元的覆盖范围时，由第二路侧单元根据接收到通知消息继续向终端传输所述车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，还包括：预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，若终端请求下载的车辆通信数据在第二路侧单元中仍然无法完成下载，则可以由第二路侧单元向覆盖范围包括终端将要驶入的区域的其它路侧单元发送通知消息，以在终端进入其它路侧单元的覆盖 范围时，由其它路侧单元继续向终端传输车辆通信数据，确保通过多个路侧单元的协同来向终端传输数据，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
具体来说，当终端在第一路侧单元的覆盖范围内请求下载车辆通信数据时，第一路侧单元向终端传输车辆通信数据，在终端将要驶出第一路侧单元的覆盖范围时，若还没有完成数据的传输，则第一路侧单元向终端将要驶入的第二路侧单元发送通知消息，以使终端在驶入第二路侧单元的覆盖范围内时，由第二路侧单元继续向终端传输车辆通信数据；在终端将要驶出第二路侧单元的覆盖范围时，若还没有完成数据的传输，则第二路侧单元向终端将要驶入的第三路侧单元发送通知消息，以使终端在驶入第三路侧单元的覆盖范围内时，由第三路侧单元继续向终端传输车辆通信数据；……直到终端请求下载的车辆通信数据下载完成。
图5示出了根据本发明的第二个实施例的用于车辆通信的数据传输装置的示意框图。
如图5所示，根据本发明的第二个实施例的用于车辆通信的数据传输装置500，包括：接收单元502和数据传输单元504。
其中，接收单元502，用于接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；数据传输单元504，用于在所述终端驶入第二路侧单元的覆盖范围时，根据所述通知消息继续向所述终端传输所述车辆通信数据。
在该技术方案中，第二路侧单元通过接收第一路侧单元发送的通知消息，并在终端驶入第二路侧单元的覆盖范围时，由第二路侧单元根据接收到通知消息继续向终端传输所述车辆通信数据，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，实现了多个路侧单元协同为终端传输数据的技术效果，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
在上述技术方案中，优选地，还包括：预测单元506，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；处 理单元508，用于在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
在该技术方案中，若终端请求下载的车辆通信数据在第二路侧单元中仍然无法完成下载，则可以由第二路侧单元向覆盖范围包括终端将要驶入的区域的其它路侧单元发送通知消息，以在终端进入其它路侧单元的覆盖范围时，由其它路侧单元继续向终端传输车辆通信数据，确保通过多个路侧单元的协同来向终端传输数据，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
具体来说，当终端在第一路侧单元的覆盖范围内请求下载车辆通信数据时，第一路侧单元向终端传输车辆通信数据，在终端将要驶出第一路侧单元的覆盖范围时，若还没有完成数据的传输，则第一路侧单元向终端将要驶入的第二路侧单元发送通知消息，以使终端在驶入第二路侧单元的覆盖范围内时，由第二路侧单元继续向终端传输车辆通信数据；在终端将要驶出第二路侧单元的覆盖范围时，若还没有完成数据的传输，则第二路侧单元向终端将要驶入的第三路侧单元发送通知消息，以使终端在驶入第三路侧单元的覆盖范围内时，由第三路侧单元继续向终端传输车辆通信数据；……直到终端请求下载的车辆通信数据下载完成。
此外，任一个路侧单元向终端传输车辆通信数据的步骤可以与第一路侧单元相同，即首先预测终端在任一个路侧单元中的行驶时长，然后根据数据传输速率和预测的行驶时长，从网络侧服务器中获取并缓存相应大小的车辆通信数据。
本发明还提出了一种路侧单元(图中未示出)，包括：如图3中所示的用于车辆通信的数据传输装置300；和/或
如图5中所示的用于车辆通信的数据传输装置500。
其中，路侧单元可以为基站形态或终端形态。当所述路侧单元为基站形态时，所述路侧单元之间通过X2接口实现信息的交互；当所述路侧单元为终端形态时，多个路侧单元之间通过终端直连通信实现信息的交互。
以下结合图6和图7详细说明本发明的技术方案。
本发明的技术方案的基本思想是当前RSU基于车辆行驶信息和历史位置预测可能驶入的邻近RSU和驶入时刻，通知必要的信息给邻近RSU，使邻近的RSU为数据下载提前进行缓存，实现终端数据传输的无缝衔接，以缩短整体的下载时间，提高用户的体验。
具体如图6所示：
1、车辆602向当前所处覆盖范围的RSU 604发送感兴趣内容的下载请求。
具体地，请求中包含当前时刻车辆的行驶信息(包括车辆标识、位置、速度、加速度、方向等)和下载内容信息等。
2、RSU 604初始化缓存内容，响应车辆602的下载请求。
具体地，RSU 604根据车辆602的请求信息和其在该RSU 604的历史位置信息预测车辆的运动轨迹，从而判断车辆602在RSU 604覆盖范围待的时长T1，根据T1从网络侧服务器取一定大小的数据缓存到RSU 604处，同时车辆602从RSU 604处下载内容。
3、RSU 604预测车辆可能驶入的邻近RSU 606和驶入时刻，通过D2D(Device to Device，终端直连通信)的方式通知邻近RSU 606必要的信息。
具体地，车辆602周期性上报行驶信息给RSU 604，RSU 604基于车辆602的上报信息和其在该RSU 604的历史位置信息预测车辆602的运动轨迹，判断车辆602可能驶入的邻近RSU 606和驶入时刻；在驶入时刻前，若该车辆602仍未完成下载，则通过D2D方式通知邻近RSU 606必要的信息，包括该车辆602驶入时刻、位置、剩余数据的大小和时间戳。
4、邻近RSU 606初始化缓存内容，继续向车辆602传输数据。
具体地，邻近RSU 606根据RSU 604通知的必要信息和该车辆602在RSU 606的历史位置信息预测车辆602的运动轨迹，从而判断车辆602在RSU 606的覆盖范围待的时长T2，根据T2以剩余数据的时间戳为起始位置取一定大小的数据缓存到邻近RSU 606处，车辆602在驶入时刻从邻近RSU 606处下载内容。此时，邻近RSU 606成为RSU 604，重复执行 上述步骤3，直到车辆602完成数据的下载。
5、RSU在一定时间后清除或更新本地的缓存内容。
车辆602在驶出任一RSU后，每隔时间T3进行检查，若该车辆602请求下载的数据没有再被其他车辆请求过，则表明内容热度有所降低，可将其在RSU本地的缓存清除；否则，以增量的方式更新本地的缓存内容。
上述处理流程如图7所示，包括：
步骤702，车辆向当前RSUx发送感兴趣内容的下载请求。
步骤704，当前RSUx初始化缓存的内容，响应车辆的下载请求。
步骤706，判断车辆请求的内容是否下载完成，若是，则执行步骤714；否则，执行步骤708。
步骤708，当前RSUx通过D2D方式通知基于轨迹预测的邻近RSUy必要的信息，并执行步骤714和步骤710。
步骤710，邻近RSUy初始化缓存的内容，响应车辆的下载请求。
步骤712，邻近RSUy成为当前RSUx，并返回步骤706。
步骤714，当前RSUx清除或增量更新本地的缓存内容。
其中，在图6所示的示意图中，RSU 604即图7中所示的RSUx，RSU 606即图7中所示的RSUy。
本发明上述实施例的技术方案解决了由于车辆高速行驶不能在一个RSU区域完整下载感兴趣内容的问题，有效缩短了整个下载过程花费的时间，提升了用户的使用体验。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的用于车辆通信的数据传输方案，实现了多个路侧单元协同为终端传输数据的技术效果，避免了相关技术中在每次进入新的路侧单元覆盖范围时都要重新传输数据而导致数据接收时间过长的问题，有效缩短了车辆通信数据的传输时长，有利于提升用户的体验。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (15)

  1. 一种用于车辆通信的数据传输方法，其特征在于，包括：
    第一路侧单元接收终端发送的数据下载请求；
    根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据；
    向所述终端传输所述车辆通信数据；
    预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；
    在所述终端将要驶出所述第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则所述第一路侧单元向所述第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
  2. 根据权利要求1所述的用于车辆通信的数据传输方法，其特征在于，根据所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据的步骤，具体包括：
    根据所述数据下载请求中包含的行驶信息，预测所述终端在所述第一路侧单元的覆盖范围中的行驶时长；
    根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
  3. 根据权利要求1所述的用于车辆通信的数据传输方法，其特征在于，预测所述终端将要驶入的区域的步骤，具体包括：
    接收所述终端周期性上报的行驶信息；
    根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运动轨迹；
    根据所述终端的运动轨迹，预测所述终端将要驶入的区域。
  4. 根据权利要求1至3中任一项所述的用于车辆通信的数据传输方法，其特征在于，向所述第二路侧单元发送的所述通知消息包括：
    所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路 侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
  5. 一种用于车辆通信的数据传输方法，其特征在于，包括：
    第二路侧单元接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；
    在所述终端驶入所述第二路侧单元的覆盖范围时，所述第二路侧单元根据所述通知消息继续向所述终端传输所述车辆通信数据。
  6. 根据权利要求5所述的用于车辆通信的数据传输方法，其特征在于，还包括：
    预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；
    在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
  7. 一种用于车辆通信的数据传输装置，其特征在于，包括：
    第一接收单元，用于接收终端发送的数据下载请求；
    获取单元，用于根据所述第一接收单元接收到的所述数据下载请求，从网络侧服务器中获取并缓存所述终端请求下载的车辆通信数据；
    数据传输单元，用于向所述终端传输所述车辆通信数据；
    第一预测单元，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元；
    处理单元，用于在所述终端将要驶出第一路侧单元的覆盖范围时，若所述终端尚未完全接收到请求下载的车辆通信数据，则向第二路侧单元发送通知消息，以在所述终端进入所述第二路侧单元的覆盖范围时，由所述第二路侧单元继续向所述终端传输所述车辆通信数据。
  8. 根据权利要求7所述的用于车辆通信的数据传输装置，其特征在于，所述获取单元包括：
    第二预测单元，用于根据所述数据下载请求中包含的行驶信息，预测 所述终端在所述第一路侧单元的覆盖范围中的行驶时长；
    第一执行单元，用于根据数据传输速率和所述行驶时长，从所述网络侧服务器中获取并缓存相应大小的车辆通信数据。
  9. 根据权利要求7所述的用于车辆通信的数据传输装置，其特征在于，所述第一预测单元包括：
    第二接收单元，用于接收所述终端周期性上报的行驶信息；
    判断单元，用于根据所述终端周期性上报的行驶信息和存储的所述终端的历史位置信息，判断所述终端的运动轨迹；
    第二执行单元，用于根据所述终端的运动轨迹，预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的第二路侧单元。
  10. 根据权利要求8或9所述的用于车辆通信的数据传输装置，其特征在于，所述行驶信息包括：
    车辆标识、实时位置、行驶速度、行驶加速度和行驶方向中的任一项或多项。
  11. 根据权利要求7至9中任一项所述的用于车辆通信的数据传输装置，其特征在于，所述处理单元向所述第二路侧单元发送的所述通知消息包括：
    所述终端对所述车辆通信数据的接收情况、所述终端驶入所述第二路侧单元的时刻和所述终端驶入所述第二路侧单元的位置信息。
  12. 一种用于车辆通信的数据传输装置，其特征在于，包括：
    接收单元，用于接收第一路侧单元发送的通知消息，其中，所述通知消息是所述终端在将要驶出所述第一路侧单元的覆盖范围，且尚未完全接收到请求下载的车辆通信数据时，由所述第一路侧单元发送的；
    数据传输单元，用于在所述终端驶入第二路侧单元的覆盖范围时，根据所述通知消息继续向所述终端传输所述车辆通信数据。
  13. 根据权利要求12所述的用于车辆通信的数据传输装置，其特征在于，还包括：
    预测单元，用于预测所述终端将要驶入的区域，并确定覆盖范围包括所述区域的其它路侧单元；
    处理单元，用于在所述终端将要驶出所述第二路侧单元的覆盖范围时，若所述终端仍未完全接收到请求下载的车辆通信数据，则向所述其它路侧单元发送通知消息，以在所述终端进入所述其它路侧单元的覆盖范围时，由所述其它路侧单元继续向所述终端传输所述车辆通信数据。
  14. 一种路侧单元，其特征在于，包括：如权利要求7至11中任一项所述的用于车辆通信的数据传输装置；和/或
    如权利要求12或13所述的用于车辆通信的数据传输装置。
  15. 根据权利要求14所述的路侧单元，其特征在于：
    所述路侧单元为基站形态，多个所述路侧单元之间通过X2接口实现信息的交互；或
    所述路侧单元为终端形态，多个所述路侧单元之间通过终端直连通信实现信息的交互。
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CN110972085B (zh) * 2019-11-27 2022-05-10 北京梧桐车联科技有限责任公司 信息交互方法、装置、存储介质、设备及系统
CN111891067A (zh) * 2020-07-31 2020-11-06 江西科技学院 一种基于5g车联网可穿戴终端的远程控制实现方法
CN116209023A (zh) * 2021-12-01 2023-06-02 华为技术有限公司 一种通信方法及装置
CN114845239A (zh) * 2022-04-29 2022-08-02 北京主线科技有限公司 隧道编队通信方法、装置及电子设备
CN115426260A (zh) * 2022-08-04 2022-12-02 浙江大华技术股份有限公司 一种软件升级系统及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030001157A (ko) * 2001-06-28 2003-01-06 엘지전자 주식회사 지능형 교통망 시스템의 대용량 데이터 전송방법
CN1403988A (zh) * 2001-08-29 2003-03-19 Lg电子株式会社 提供路边单元的信道信息的系统和方法
CN101932059A (zh) * 2010-08-02 2010-12-29 清华大学深圳研究生院 V2i通信中基于网络的导航辅助快速三层切换方法
CN103001717A (zh) * 2012-12-12 2013-03-27 中国联合网络通信集团有限公司 基于车载终端的节目下载方法、设备和系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102096951B (zh) * 2009-12-11 2014-03-12 中兴通讯股份有限公司 Etc业务信号发送、接收方法以及路侧单元、车载单元
CN103079287B (zh) * 2012-12-28 2016-01-06 东南大学 基于无线多跳自组网的高速公路智能车辆感知与路灯控制方法
CN103200642B (zh) * 2013-04-12 2015-08-19 电子科技大学 一种无线移动网络路由选择的优化方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030001157A (ko) * 2001-06-28 2003-01-06 엘지전자 주식회사 지능형 교통망 시스템의 대용량 데이터 전송방법
CN1403988A (zh) * 2001-08-29 2003-03-19 Lg电子株式会社 提供路边单元的信道信息的系统和方法
CN101932059A (zh) * 2010-08-02 2010-12-29 清华大学深圳研究生院 V2i通信中基于网络的导航辅助快速三层切换方法
CN103001717A (zh) * 2012-12-12 2013-03-27 中国联合网络通信集团有限公司 基于车载终端的节目下载方法、设备和系统

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111356073A (zh) * 2018-12-21 2020-06-30 华为技术有限公司 任务处理方法、装置及设备
CN111627248A (zh) * 2019-02-28 2020-09-04 株式会社日立制作所 服务器、车辆管制系统
CN111627248B (zh) * 2019-02-28 2022-04-29 株式会社日立制作所 服务器、车辆管制系统
CN111624624A (zh) * 2020-04-21 2020-09-04 腾讯科技（深圳）有限公司 差分数据的处理方法及装置
CN113300922A (zh) * 2020-12-02 2021-08-24 阿里巴巴集团控股有限公司 信息提醒方法、设备及存储介质
CN113132483A (zh) * 2021-04-20 2021-07-16 昆明理工大学 一种基于v2x的车联网事故视频消息分发方法
CN113132483B (zh) * 2021-04-20 2022-03-29 昆明理工大学 一种基于v2x的车联网事故视频消息分发方法
CN115273473A (zh) * 2022-07-29 2022-11-01 阿波罗智联(北京)科技有限公司 路侧设备感知信息的处理方法、装置及自动驾驶车辆
CN116761152A (zh) * 2023-08-14 2023-09-15 合肥工业大学 路侧单元边缘缓存放置及内容交付方法
CN116761152B (zh) * 2023-08-14 2023-11-03 合肥工业大学 路侧单元边缘缓存放置及内容交付方法

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