WO2022142632A1 - 一种车辆之间的消息通信方法及系统 - Google Patents

一种车辆之间的消息通信方法及系统 Download PDF

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Publication number
WO2022142632A1
WO2022142632A1 PCT/CN2021/126012 CN2021126012W WO2022142632A1 WO 2022142632 A1 WO2022142632 A1 WO 2022142632A1 CN 2021126012 W CN2021126012 W CN 2021126012W WO 2022142632 A1 WO2022142632 A1 WO 2022142632A1
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vehicle
credit score
event message
credibility
blockchain
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PCT/CN2021/126012
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English (en)
French (fr)
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寇美娟
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深圳壹账通智能科技有限公司
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Publication of WO2022142632A1 publication Critical patent/WO2022142632A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/54—Interprogram communication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/40—Business processes related to the transportation industry
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]

Definitions

  • the present application relates to the field of blockchain technology, and relates to a method and system for message communication between vehicles.
  • the Internet of Vehicles can greatly improve road safety and traffic efficiency, and has been widely supported by industry and academia in recent years.
  • each vehicle can use advanced wireless communication technology to communicate with surrounding vehicles and roadside units in a "vehicle-to-vehicle (V2V)" and “vehicle-to-roadside unit (Vehicle-to-Vehicle, V2V)" manner, respectively.
  • -RSU ,V2R) method to send and receive messages.
  • Collaborative safety application is an important branch of the Internet of Vehicles, and the dissemination of messages in V2V and V2R methods greatly improves road safety and traffic efficiency.
  • the purpose of the present application is to propose a method and system for message communication between vehicles in view of the above-mentioned shortcomings of the prior art, and the purpose is achieved through the following technical solutions.
  • a first aspect of the present application provides a method for communicating messages between vehicles, the method includes: a first vehicle sends an event message to a second vehicle around it; the second vehicle determines the credibility of the event message and upload the determined credibility and the identity of the first vehicle to a nearby roadside unit; the roadside unit generates a reputation score for the event message sent by the first vehicle according to the credibility , and update the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and obtain the updated total credit score from the blockchain and send it to the second vehicle.
  • the points include positive or negative values, and are positively correlated with credibility; the second vehicle decides whether to forward the event message according to the total credibility points of the first vehicle.
  • a second aspect of the present application provides a message communication system between vehicles, the system includes: a first vehicle for sending an event message to a second vehicle around it; a second vehicle for determining the event The credibility of the message, and upload the determined credibility and the identity of the first vehicle to a nearby roadside unit; the roadside unit is used to send events for the first vehicle according to the credibility
  • the message generates a credit score, and according to the credit score, the total credit score corresponding to the first vehicle stored on the blockchain is updated, and the updated total credit score is obtained from the blockchain and sent to the second vehicle.
  • the vehicle; the second vehicle further configured to decide whether to forward the event message according to the total credit score of the first vehicle.
  • a third aspect of the present application provides a vehicle, comprising: a memory and a processor, where the memory stores a computer program, the processor is configured to invoke the computer program to execute the above method for communicating messages between vehicles, the method It includes: receiving the event message sent by the first vehicle, determining the credibility of the event message, and uploading the determined credibility and the identification of the first vehicle to a nearby roadside unit, so that the roadside The unit generates a credit score for the event message sent by the first vehicle according to the credibility, and updates the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and retrieves the credit score from the area.
  • the updated total credit score obtained on the blockchain is sent to the second vehicle, the credit score includes positive or negative values, and is positively correlated with the credibility; according to the total credit score of the first vehicle, it is decided whether to forward the event message.
  • a fourth aspect of the present application provides a roadside unit, comprising: a memory and a processor, where the memory stores a computer program, the processor is configured to invoke the computer program to execute a method for communicating messages between vehicles, the The method includes: generating a credit score for an event message sent by a first vehicle according to the credibility of the event message; wherein the event message is sent by the first vehicle to the second vehicle, and the credibility is the Uploaded by the second vehicle, the identification of the first vehicle is uploaded by the second vehicle; update the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and retrieve the data from the blockchain Obtain the updated total credit score and send it to the second vehicle, so that the second vehicle decides whether to forward the event message according to the total credit score of the first vehicle; wherein the credit score includes a positive value or a negative value , and is positively correlated with reliability.
  • a fifth aspect of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned method for communicating messages between vehicles is implemented, and the method It includes: receiving the event message sent by the first vehicle, determining the credibility of the event message, and uploading the determined credibility and the identification of the first vehicle to a nearby roadside unit, so that the roadside The unit generates a credit score for the event message sent by the first vehicle according to the credibility, and updates the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and retrieves the credit score from the area.
  • the updated total credit score obtained on the blockchain is sent to the second vehicle, the credit score includes positive or negative values, and is positively correlated with the credibility; according to the total credit score of the first vehicle, it is decided whether to forward the event message.
  • a sixth aspect of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned method for communicating messages between vehicles is implemented, and the method Including: generating a credit score for the event message sent by the first vehicle according to the credibility of the event message; wherein, the event message is sent by the first vehicle to the second vehicle, and the credibility is the first vehicle.
  • the identification of the first vehicle is uploaded by the second vehicle; the total credit score corresponding to the first vehicle stored on the blockchain is updated according to the credit score, and obtained from the blockchain The updated total credit score is sent to the second vehicle, so that the second vehicle decides whether to forward the event message according to the total credit score of the first vehicle; wherein the credit score includes a positive value or a negative value, and is positively correlated with reliability.
  • the technical solution of the present application makes it possible to effectively restrain some untrustworthy vehicles from randomly disseminating information in the Internet of Vehicles, improve the reliability of the Internet of Vehicles, and ensure the communication efficiency of the Internet of Vehicles.
  • the blockchain technology to store the total credit score of the vehicle, it can be ensured that it is not maliciously tampered with, and has a certain degree of privacy and security, and each update action of the roadside unit on the total credit score of the vehicle will also be recorded. On the blockchain, make it traceable.
  • FIG. 1 is a flowchart of an embodiment of a method for communicating messages between vehicles according to an exemplary embodiment of the present application.
  • FIG. 2 is a schematic diagram of an application scenario according to an exemplary embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a message communication system between vehicles according to an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in this application to describe various information, such information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information without departing from the scope of the present application.
  • word "if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • This application may relate to the field of artificial intelligence technology, for example, relevant data may be acquired and processed based on artificial intelligence technology, such as obtaining credibility based on artificial intelligence.
  • this application can also relate to the field of digital medicine, for example, medical data can be stored in the blockchain.
  • the Internet of Vehicles mainly refers to the dynamic information transmission of the vehicle by the on-board unit on the vehicle through wireless communication, thereby providing different functional services for the vehicle, such as providing road information, weather information, traffic accident information, etc.
  • the process of vehicle automation has advanced considerably. Due to the distributed network architecture of the Internet of Vehicles and the high mobility and extensiveness of vehicles, the communication information of vehicles is more vulnerable to malicious attacks and errors, and the network security problems in the Internet of Vehicles are increasingly prominent. In order to improve the credibility of vehicle transmission information, the issues of trust management and data security in the Internet of Vehicles are particularly important.
  • the present application proposes an improved message communication method between vehicles.
  • the message receiving vehicle performs reliability detection on the message, and compares the detected reliability and The identification of the vehicle spreading the message is uploaded to the nearby roadside unit (RSU), and the RSU generates a reputation score (including positive or negative value) for the vehicle spreading the message according to the credibility, and the reputation score is positively correlated with the credibility ), and update the total credit score corresponding to the vehicle stored on the blockchain according to the generated credit score, obtain the updated total credit score from the blockchain and send it to the message receiving vehicle, so that the message receiving vehicle can disseminate the message according to the The vehicle's total reputation points determine whether or not to forward the messages it disseminates.
  • RSU roadside unit
  • FIG. 1 is a flowchart of an embodiment of a method for communicating messages between vehicles according to an exemplary embodiment of the present application.
  • the method for communicating messages between vehicles is applied to the Internet of Vehicles, where the Internet of Vehicles includes vehicles and roads.
  • a side unit RSU, Road Side Unit
  • OBU On board unit
  • both vehicle-to-vehicle transactions and vehicle-to-roadside unit transactions are performed on the blockchain.
  • the method for communicating messages between vehicles includes the following steps.
  • Step 101 The first vehicle sends an event message to a second vehicle around it.
  • the first vehicle and the second vehicle are both vehicles that have been connected to the Internet of Vehicles, the first vehicle sends the event message through the on-board unit installed by itself, and the second vehicle also sends the event message through the on-board unit installed by itself.
  • the unit receives event messages sent by onboard units of other vehicles.
  • the message transmission between vehicles can use DSRC (Dedicated Short Range Communication, dedicated short-range communication) technology implementation.
  • DSRC Dedicated Short Range Communication, dedicated short-range communication
  • the event message sent by the vehicle may include event messages such as road information, weather information, and traffic accidents. And the event message also includes the sender (ie, the identity of the first vehicle).
  • the first vehicle can store the sent event message, sender information and the time stamp of the sending time node on the blockchain to facilitate subsequent search.
  • the blockchain has the characteristics of anti-tampering of data, so the messages sent by vehicles stored on the blockchain will not be maliciously tampered with, which can ensure its privacy and security.
  • the sender information may include the identifier of the first vehicle, the geographic location information where the first vehicle is located, and the like.
  • the above-mentioned event message, sender information, and sending time node timestamp may be stored in a certain node of the blockchain.
  • Step 102 The second vehicle determines the credibility of the event message, and uploads the determined credibility and the identity of the first vehicle to a nearby roadside unit.
  • the onboard unit of the second vehicle may display the received event message and credibility options through the display screen, and receive the user's response to the event message The credibility selected in the credibility options.
  • the reliability option may include an optional range of 0% to 100%, and the display form may be a slider bar, a selection button, or the like, which is not limited in this application.
  • the user can judge the reliability of the event information, because in general, the reason why the second vehicle can receive the event information of the first vehicle indicates that the two vehicles are in The geographical location of the vehicle is very close, so some real-time events observed by the user on the first vehicle can usually be observed by the user of the second vehicle. Therefore, the user on the second vehicle can evaluate the reliability of the event information sent by the first vehicle. Evaluation is more accurate and effective.
  • the second vehicle can also evaluate the credibility of the event information by invoking the credibility analysis method in the smart contract deployed on the blockchain.
  • the reliability value of the event message in step 102 is in the range of 0% to 100%.
  • the roadside unit is usually set on the traffic lights on the roadside or in the base station on the roadside, which is used to provide functional services for passing vehicles, and the roadside unit has the functions of data calculation, storage, forwarding, and management of vehicles. information, etc. Due to the high-speed moving characteristics of the vehicle, only the nearby roadside units closest to the vehicle can receive the credibility uploaded by the second vehicle and the identity of the first vehicle. In addition, there is a data synchronization function between the roadside unit and the roadside unit, so the data stored on each roadside unit in the Internet of Vehicles and the functions provided are consistent.
  • Step 103 The roadside unit generates a credit score for the event message sent by the first vehicle according to the credibility, and updates the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and from The updated total credit points obtained on the blockchain are sent to the second vehicle.
  • the roadside unit may look up the rating level to which the reliability belongs in a preconfigured reputation evaluation table. , and obtain the credit score corresponding to the found rating level from the credit evaluation table.
  • the obtained reputation points can include positive or negative values, and there is a positive correlation between the reputation points and the credibility, that is, the higher the credibility of the event message, the higher the credibility points obtained, so that the The event message with high credibility will get corresponding reward points, and if the credibility of the event message is relatively low, then the credibility points obtained will be relatively low, even zero or negative, so that the vehicle will send the credibility points because of the credibility.
  • the corresponding penalty is obtained for lower event messages.
  • the pre-configured credit evaluation table includes four levels: rating level A, rating level B, rating level C, and rating level D.
  • the reliability range corresponding to rating level A is 75% ⁇ 100%
  • the reliability range corresponding to rating level B is 50% ⁇ 74%
  • the reliability range corresponding to rating level C is 25% ⁇ 49%.
  • the credibility range corresponding to rating level D is 0 ⁇ 24%;
  • the credit score corresponding to rating level A is 1 point
  • the credit score corresponding to rating level B is 0.5 points
  • the credit score corresponding to rating level C is 0 points, and the credit score corresponding to rating level C is 0 points.
  • the credit score corresponding to D is -0.5 points.
  • the corresponding relationship between the reliability and the reputation score may also be determined. Reputation points.
  • the second vehicle in this embodiment may have multiple vehicles, and each second vehicle will determine one for the received event message. and upload the credibility to the roadside unit, so the roadside unit needs to generate a credit score for the first vehicle according to the credibility uploaded by each second vehicle.
  • a final credit score is determined according to the plurality of credit scores generated for the first vehicle for sending the event message for the first vehicle.
  • the average value of a plurality of reputation points may be used as the reputation points obtained by the first vehicle sending the event message.
  • the reputation points can be directly accumulated to the first vehicle corresponding to the first vehicle stored on the blockchain. on the total credit score.
  • the total credit score of the vehicle is stored on the blockchain, it can be guaranteed not to be maliciously tampered with, and it is safe, and every update action of the roadside unit on the total credit score of the vehicle will also be recorded on the blockchain. , making it traceable.
  • the above-mentioned total credit score of the first vehicle may also be stored in a certain node of the blockchain.
  • the total credit score corresponding to the first vehicle will increase, and if the credit score is negative, the total credit score corresponding to the first vehicle will decrease.
  • the total reputation score of the first vehicle stored on the blockchain will become lower and lower, and the event messages sent by it will become lower and lower. , other vehicles will no longer believe it.
  • the first vehicle can also query its own total reputation points from the blockchain to know its own reputation, and can also use the reputation points to exchange gifts.
  • Step 104 The second vehicle decides whether to forward the event message according to the total credit score of the first vehicle.
  • the second vehicle may determine whether the total credit score of the first vehicle is greater than a preset threshold, and if the total credit score is greater than the preset threshold, forward the event message to other vehicles around it; if If the total reputation score is less than a preset threshold, the event message is not forwarded.
  • the second vehicle may set a judgment threshold for automatically forwarding event messages of other vehicles according to its actual needs, and the thresholds set on each vehicle may be the same or different, which is not limited in this application.
  • the second vehicle can also output the total credit score of the first vehicle, and the user decides whether to forward the first vehicle or not. Event messages sent by the vehicle.
  • vehicle 1 sends event messages to vehicles 2 and 3 around it, and both vehicles 2 and 3 will determine the reliability of the event message of vehicle 1 and upload them to nearby roadside units , the roadside unit generates a credit score for the event message sent by vehicle 1 according to the credibility uploaded by vehicle 2 and vehicle 3, updates the total credit score of vehicle 1 stored on the blockchain, and sends the total credit score of vehicle 1 For vehicle 2 and vehicle 3, if the total credit score of vehicle 1 is higher than the preset threshold on vehicle 2 and vehicle 3, then both vehicle 2 and vehicle 3 forward the event message, so that vehicle 4 will receive the forwarding from vehicle 2.
  • vehicle 4 can directly obtain the total credit score of vehicle 1 from the blockchain, and transfer vehicle 1 The total credit score of vehicle 1 is sent to vehicle 4. If the total credit score of vehicle 1 is higher than the preset threshold on vehicle 4, then vehicle 4 will forward the event message, and vehicle 5 will receive the event message forwarded by vehicle 4, and so on. .
  • the vehicle will no longer forward the event message to it.
  • the blockchain referred to in this application is a new application mode of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.
  • Blockchain essentially a decentralized database, is a series of data blocks associated with cryptographic methods. Each data block contains a batch of network transaction information to verify its Validity of information (anti-counterfeiting) and generation of the next block.
  • the blockchain can include the underlying platform of the blockchain, the platform product service layer, and the application service layer.
  • the present application also provides an embodiment of a message communication system between vehicles.
  • FIG. 3 is a schematic structural diagram of an inter-vehicle message communication system according to an exemplary embodiment of the present application. As shown in FIG. 3 , the inter-vehicle message communication system includes a first vehicle 310 and a second vehicle 320 and roadside unit 330.
  • the first vehicle 310 is used to send an event message to the second vehicle 320 around it.
  • the second vehicle 320 is configured to determine the credibility of the event message, and upload the determined credibility and the identification of the first vehicle 310 to the nearby roadside unit 330 .
  • the roadside unit 330 is configured to generate a reputation score for the event message sent by the first vehicle 310 according to the credibility, and update the total corresponding to the first vehicle 310 stored on the blockchain according to the reputation score. Reputation points, and the updated total reputation points are obtained from the blockchain and sent to the second vehicle 320 .
  • the second vehicle 320 is further configured to decide whether to forward the event message according to the total credit score of the first vehicle 310 .
  • the first vehicle and the second vehicle are both vehicles that have been connected to the Internet of Vehicles, the first vehicle sends the event message through its own installed on-board unit, and the second vehicle also sends the event message through its own installed
  • the on-board unit receives event messages sent by on-board units of other vehicles.
  • vehicle-to-vehicle message transmission may be implemented using DSRC technology.
  • the event message sent by the vehicle may include event messages such as road information, weather information, and traffic accidents. And the event message also includes the sender (ie, the identity of the first vehicle).
  • the second vehicle 320 is specifically configured to output and display the event message and reliability options during the process of determining the reliability of the event message; The selected credibility of the message in the credibility options.
  • the reliability option may include an optional range of 0% to 100%, and the display form may be a slider bar, a selection button, or the like, which is not limited in this application.
  • the user can judge the reliability of the event information, because in general, the reason why the second vehicle can receive the event information of the first vehicle indicates that the two vehicles are in The geographical location of the vehicle is very close, so some real-time events observed by the user on the first vehicle can usually be observed by the user of the second vehicle. Therefore, the user on the second vehicle can evaluate the reliability of the event information sent by the first vehicle. Evaluation is more accurate and effective.
  • the second vehicle 320 is specifically configured to invoke the credibility of the smart contract deployed on the blockchain during the process of determining the credibility of the event message
  • the analysis method determines the credibility of the event information.
  • the roadside unit 330 is specifically configured to, in the process of generating a reputation score for the event message sent by the first vehicle 310 according to the reliability, record the information in the preconfigured reputation evaluation table. , look up the rating level to which the credibility belongs; and obtain the credit score corresponding to the found rating level from the credit evaluation table.
  • the obtained reputation points can include positive or negative values, and there is a positive correlation between the reputation points and the credibility, that is, the higher the credibility of the event message, the higher the credibility points obtained, so that the The event message with high credibility will get corresponding reward points, and if the credibility of the event message is relatively low, then the credibility points obtained will be relatively low, even zero or negative, so that the vehicle will send the credibility points because of the credibility.
  • the corresponding penalty is obtained for lower event messages.
  • the second vehicle in this embodiment may have multiple vehicles, and each second vehicle will determine one for the received event message. and upload the credibility to the roadside unit, so the roadside unit needs to generate a credit score for the first vehicle according to the credibility uploaded by each second vehicle.
  • a final credit score is determined according to the plurality of credit scores generated for the first vehicle for sending the event message for the first vehicle.
  • the average value of a plurality of reputation points may be used as the reputation points obtained by the first vehicle sending the event message.
  • the second vehicle 320 is specifically configured to determine whether the total credit score of the first vehicle 310 is in the process of determining whether to forward the event message according to the total credit score of the first vehicle 310 . is greater than a preset threshold; if the total reputation score is greater than the preset threshold, the event message is forwarded to other vehicles around it; if the total reputation score is less than the preset threshold, the event message is not forwarded.
  • the second vehicle may set a judgment threshold for automatically forwarding event messages of other vehicles according to its actual needs, and the thresholds set on each vehicle may be the same or different, which is not limited in this application.
  • the first vehicle 310 is further configured to, after sending the event message to the second vehicle 320 around it, store the event message, the sender information and the sending time node timestamp in the Since the blockchain has the characteristics of preventing data tampering, the message sent by the vehicle stored on the blockchain will not be maliciously tampered with, which can ensure its privacy and security.
  • the sender information may include the identifier of the first vehicle, information on the geographic location where the first vehicle is located, and the like.
  • the roadside unit 330 is specifically configured to accumulate the reputation points in the process of updating the total reputation points corresponding to the first vehicle 310 stored on the blockchain according to the reputation points. to the total credit points corresponding to the first vehicle 310 stored on the blockchain.
  • Embodiments of the present application further provide a message communication device between vehicles, including units or modules that perform part or all of the steps of the above method, which will not be repeated here.
  • An embodiment of the present application further provides a vehicle, including: a memory and a processor, where the memory stores a computer program, and the processor is configured to invoke the computer program to execute the above method for communicating messages between vehicles.
  • the vehicle may be the first vehicle and/or the second vehicle, for example, the processor may invoke a computer program to execute the steps performed by the first vehicle and/or the second vehicle.
  • the processor may perform the following steps: receiving an event message sent by a first vehicle, determining the credibility of the event message, and uploading the determined credibility and the identity of the first vehicle to a nearby roadside unit , so that the roadside unit generates a credit score for the event message sent by the first vehicle according to the credibility, and updates the total credit corresponding to the first vehicle stored on the blockchain according to the credit score and obtain the updated total credit score from the blockchain and send it to the second vehicle.
  • the credit score includes positive or negative values and is positively correlated with the credibility; according to the total credit score of the first vehicle Reputation points determine whether to forward the event message.
  • the processor may also perform the step of sending an event message to a second vehicle around it.
  • the processor may also perform the remaining steps of the foregoing method embodiments, which will not be repeated here.
  • An embodiment of the present application further provides a roadside unit, including: a memory and a processor, where the memory stores a computer program, and the processor is configured to invoke the computer program to execute the above-mentioned method for communicating messages between vehicles, such as Perform the steps performed by the roadside unit.
  • the processor may perform the following steps: generating a credit score for the event message sent by the first vehicle according to the reliability of the event message; wherein the event message is sent by the first vehicle to the second vehicle, and the The credibility is uploaded by the second vehicle, and the identity of the first vehicle is uploaded by the second vehicle; update the total credit score corresponding to the first vehicle stored on the blockchain according to the credit score, and from the The updated total credit score obtained on the blockchain is sent to the second vehicle, so that the second vehicle decides whether to forward the event message according to the total credit score of the first vehicle; wherein the credit score Positive or negative values are included and are positively correlated with confidence.
  • the processor may also perform the remaining steps of the foregoing method embodiments, which will not be repeated here.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the foregoing method for communicating messages between vehicles can be implemented. For example, the steps performed by the first vehicle, the second vehicle and/or the roadside unit are performed, which will not be repeated here.
  • the storage medium involved in this application such as a computer-readable storage medium, may be non-volatile or volatile.

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Abstract

本申请涉及区块链技术领域，本申请公开了一种车辆之间的消息通信方法及系统，具体应用于车联网中，包括：第一车辆向周围的第二车辆发送事件消息；第二车辆确定事件消息的可信度，将可信度和第一车辆的标识上传至路侧单元；路侧单元根据可信度为第一车辆发送的事件消息生成信誉积分，根据信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，从区块链上获取更新后的总信誉积分发送至第二车辆，第二车辆根据第一车辆的总信誉积分决定是否转发事件消息。由于车辆每散播一条消息，均会触发其信誉积分的更新，如果车辆频繁散播一些无用消息，其信誉积分越来越低，其他车辆不会再为其转发消息，从而可约束车辆胡乱散播消息，提升车联网的可靠性。

Description

一种车辆之间的消息通信方法及系统
本申请要求于2020年12月28日提交中国专利局、申请号为202011583168.1，发明名称为“一种车辆之间的消息通信方法及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及区块链技术领域，涉及了一种车辆之间的消息通信方法及系统。
 背景技术
车联网能够大幅提高道路安全和交通效率，近年来受到工业界和学术界的广泛支持。在车联网中，每辆车能够利用先进的无线通信技术分别与周围的车辆和路侧单元以“车辆-车辆(Vehicle-to-Vehicle ,V2V)”和“车辆-路侧单元(Vehicle-to-RSU ,V2R)”的方式进行消息收发。协作安全应用是车联网的一个重要分支，V2V和V2R方式的消息散播使得道路安全和交通效率都大幅提高。
然而，发明人意识到，由于其独特特性，当车联网中存在不诚实和恶意的车辆节点时，这些车辆为了最大化自身利益，而拒绝转发消息或者发送恶意消息，这就导致整个车联网网络通信效率很低，并严重损害了车联网的可靠性，严重阻碍了车联网的实际应用。
 技术问题
本申请的目的是针对上述现有技术的不足提出的一种车辆之间的消息通信方法及系统，该目的是通过以下技术方案实现的。
 技术解决方案
本申请的第一方面提出了一种车辆之间的消息通信方法，所述方法包括：第一车辆向其周围的第二车辆发送事件消息；所述第二车辆确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元；所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息。
本申请的第二方面提出了一种车辆之间的消息通信系统，所述系统包括：第一车辆，用于向其周围的第二车辆发送事件消息；第二车辆，用于确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元；路侧单元，用于根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆；第二车辆，还用于根据第一车辆的总信誉积分决定是否转发所述事件消息。
本申请的第三方面提出了一种车辆，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行上述车辆之间的消息通信方法，所述方法包括：接收第一车辆发送的事件消息，确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元，以使所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；根据第一车辆的总信誉积分决定是否转发所述事件消息。
本申请的第四方面提出了一种路侧单元，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行车辆之间的消息通信方法，所述方法包括：根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分；其中，所述事件消息是所述第一车辆发送给第二车辆的，所述可信度是所述第二车辆上传的，所述第一车辆的标识是第二车辆上传的；根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，以使所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息；其中，所述信誉积分包括正值或负值，且与可信度呈正相关。
本申请的第五方面提出了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述车辆之间的消息通信方法，所述方法包括：接收第一车辆发送的事件消息，确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元，以使所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；根据第一车辆的总信誉积分决定是否转发所述事件消息。
本申请的第六方面提出了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述车辆之间的消息通信方法，所述方法包括：根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分；其中，所述事件消息是所述第一车辆发送给第二车辆的，所述可信度是所述第二车辆上传的，所述第一车辆的标识是第二车辆上传的；根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，以使所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息；其中，所述信誉积分包括正值或负值，且与可信度呈正相关。
 有益效果
本申请技术方案使得可以有效约束一些不守诚信的车辆在车联网中胡乱散播消息，提升车联网的可靠性，保证车联网网络通信效率。另外，通过使用区块链技术存储车辆的总信誉积分，可以保证其不被恶意篡改，具有一定的私密性和安全性，并且路侧单元每次对车辆总信誉积分的更新动作也会被记录在区块链上，使其有迹可循。
 附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。图1为本申请根据一示例性实施例示出的一种车辆之间的消息通信方法的实施例流程图。
图2为本申请根据一示例性实施例示出的一种应用场景示意图。
图3为本申请根据一示例性实施例示出的一种车辆之间的消息通信系统的结构示意图。
 本发明的实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
本申请可涉及人工智能技术领域，如可以基于人工智能技术对相关的数据进行获取和处理，比如基于人工智能获取可信度。可选的，本申请还可涉及数字医疗领域，如区块链中可存储医疗数据。
车联网主要指车辆上的车载单元通过无线通信方式进行车辆的动态信息传送，从而为车辆提供不同的功能服务，例如提供道路信息、天气信息、交通事故信息等。随着汽车数量和质量的稳定增长和计算机的快速发展，车辆自动化过程大幅推进。由于车联网的分布式网络架构、车辆的高移动性与广泛性，车辆的通信信息更易遭受恶意攻击而产生错误，车联网中的网络安全问题日益凸显。为提升车辆传输信息的可信度，车联网中的信任管理与数据安全问题显得尤为重要。
现有方法大多没有考虑到例如篡改数据等针对车辆和路侧单元的恶意攻击，未涉及车联网安全问题。或者忽视了车辆遭受攻击而产生的发送信息不准确与车辆间信息传输的数据安全性问题。由于缺乏信息可信度的判断，车联网中的网络通信效率比较低。
为了提升车联网的可靠性，本申请提出一种改进的车辆之间的消息通信方法，对于车辆散播的消息，通过消息接收车辆对消息进行可信度检测，并将检测到的可信度和散播消息的车辆的标识上传到附近的路侧单元（RSU），由路侧单元根据可信度为散播消息的车辆生成一个信誉积分（包括正值或负值，信誉积分与可信度呈正相关），并根据生成的信誉积分更新区块链上存储的该车辆所对应的总信誉积分，从区块链上获取更新后的总信誉积分后发送给消息接收车辆，从而消息接收车辆根据散播消息车辆的总信誉积分决定是否转发其散播的消息。
由此可见，车辆每散播出一条消息，均会触发该车辆的总信誉积分的更新，如果车辆频繁散播一些无用消息，其总信誉积分会越来越低，其他车辆不会再为其转发散播的消息，从而可以有效约束一些不守诚信的车辆在车联网中胡乱散播消息，提升车联网的可靠性，保证车联网网络通信效率。
下面以具体实施例对本申请提出的账单分期方法进行详细阐述。
图1为本申请根据一示例性实施例示出的一种车辆之间的消息通信方法的实施例流程图，该车辆之间的消息通信方法应用于车联网中，所述车联网包括车辆和路侧单元（RSU, Road Side Unit），且车辆上均安装有车载单元（OBU，On board unit），用于与路侧单元或其他车辆进行无线通信。在本实施例中，车辆与车辆之间的交易以及车辆与路侧单元之间的交易均在区块链上进行。
如图1所示，该车辆之间的消息通信方法包括如下步骤。
步骤101：第一车辆向其周围的第二车辆发送事件消息。
在步骤101中，第一车辆和第二车辆均为已接入车联网中的车辆，第一车辆在发送事件消息时通过自身安装的车载单元进行发送，并且第二车辆也通过自身安装的车载单元接收其他车辆的车载单元发送的事件消息。
示例性的，车辆与车辆之间的消息传送可以采用DSRC（Dedicated Short Range Communication，专用短程通信）技术实现。
进一步地，车辆发送的事件消息可以包括道路信息、天气信息、交通事故等事件消息。并且事件消息还包括发送者（即第一车辆的标识）。
由于车辆与车辆之间的交易在区块链上进行，因此第一车辆可以将发送的事件消息、发送者信息以及发送时间节点时间戳均存储到区块链上，以便于后续查找，由于区块链具有防数据篡改的特点，因此区块链上存储的车辆发送消息不会被恶意篡改，可以保证其私密性和安全性。其中，发送者信息可以包括第一车辆的标识、第一车辆所处的地理位置信息等。
在一示例中，上述所述的事件消息、发送者信息以及发送时间节点时间戳可以存储于区块链的某一节点中。
步骤102：第二车辆确定事件消息的可信度，并将确定的可信度和第一车辆的标识上传至附近的路侧单元。
在一些实施例中，针对第二车辆确定事件消息的可信度的过程，第二车辆的车载单元可以通过显示屏显示接收到的事件消息和可信度选项，并接收用户针对所述事件消息在可信度选项中所选择的可信度。
其中，可信度选项可以包括0%~100%的可选范围，其显示形式可以是滑动条、选择按键等，本申请对此不进行限定。
也就是说，通过将接收到的事件信息显示给用户，由用户判断事件信息的可信度，因为一般情况下第二车辆之所以能够接收到第一车辆的事件信息，表示两辆车所处的地理位置很近，因此第一车辆上的用户观察到的一些实时事件，通常第二车辆用户也能够观察到，因此由第二车辆上的用户对第一车辆发送的事件信息进行可信度评价更为准确有效。
在另一些实施例中，针对第二车辆确定事件消息的可信度的过程，由于车辆与车辆之间的交易以及车辆与路侧单元之间的交易均在区块链上进行，因此第二车辆也可以通过调用部署在区块链上的智能合约中的可信度分析方法来评价所述事件信息的可信度。
需要说明的是，步骤102中事件消息的可信度取值位于0%~100%范围之间。
进一步地，在车联网中，路侧单元通常设置于路边的红绿灯上或者路边的基站中，其用于为经过的车辆提供功能服务，路侧单元具有数据计算、存储、转发、管理车辆信息等功能。由于车辆的高速移动特点，只有距离车辆最近的附近路侧单元能够接收到第二车辆上传的可信度和第一车辆的标识。另外，路侧单元与路侧单元之间具有数据同步功能，因此车联网中的每个路侧单元上存储的数据和提供的功能均一致。
步骤103：路侧单元根据所述可信度为第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从区块链上获取更新后的总信誉积分发送至第二车辆。
在一些实施例中，针对路侧单元根据所述可信度为第一车辆生成一个信誉积分的过程，路侧单元可以在预先配置的信誉评价表中，查找所述可信度所属的评级等级，并从所述信誉评价表中，获取查找到的评级等级对应的信誉积分。
其中，获取的信誉积分可以包括正值或负值，且信誉积分与可信度之间呈正相关关系，即事件消息的可信度越高，其获得的信誉积分会越高，从而车辆因发送可信度比较高的事件消息而获得相应的积分奖励，而如果事件消息的可信度比较低，那么其获得的信誉积分会比较低，甚至为零或负值，从而车辆因发送可信度比较低的事件消息而获得相应的惩罚。
举例来说，参见下述表1所示，预先配置的信誉评价表中包括评级等级A、评级等级B、评级等级C、评级等级D四个等级。其中，评级等级A对应的可信度范围为75%~100%，评级等级B对应的可信度范围为50%~74%，评级等级C对应的可信度范围为25%~49%，评级等级D对应的可信度范围为0~24%；评级等级A对应的信誉积分为1分，评级等级B对应的信誉积分为0.5分，评级等级C对应的信誉积分为0分，评级等级D对应的信誉积分为-0.5分。
Figure dest_path_image001
表1。
在另一些实施例中，针对路侧单元根据所述可信度为第一车辆生成一个信誉积分的过程，也可以根据可信度与信誉积分之间的对应关系式，确定可信度对应的信誉积分。
需要说明的是，由于位于第一车辆周围的车辆可能不止一辆，因此本实施例中的第二车辆可能有多辆车，并且每个第二车辆均会为接收到的事件消息确定出一个可信度，并将可信度上传至路侧单元，从而路侧单元需要根据每个第二车辆上传的可信度，为第一车辆生成一个信誉积分，为了确保信誉积分的准确度，可以根据为第一车辆生成的多个信誉积分为第一车辆发送该条事件消息确定出一个最终的信誉积分。
在一示例中，可以通过将多个信誉积分的平均值作为第一车辆发送该条事件消息得到的信誉积分。
在一些实施例中，针对根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分的过程，可以通过将该信誉积分直接累加到区块链上存储的第一车辆对应的总信誉积分上。
由于车辆的总信誉积分在区块链上进行存储，因此可以保证其不被恶意篡改，具有安全性，并且路侧单元每次对车辆总信誉积分的更新动作也会被记录在区块链上，使其有迹可循。
在一示例中，上述所述的第一车辆的总信誉积分也可以存储于区块链的某一节点中。
基于上述描述可知，如果信誉积分不为零且为正值，那么第一车辆对应的总信誉积分会增加，如果信誉积分为负值，那么第一车辆对应的总信誉积分会减少。
也就是说，如果第一车辆频繁的发送一些可信度比较低的事件消息，那么在区块链上存储的第一车辆的总信誉积分会变得越来越低，那么其发送的事件消息，其他车辆就不会再相信。
需要说明的是，第一车辆也可以从区块链上查询自身的总信誉积分，以了解自身的信誉高低，并且也可以利用信誉积分兑换礼品。
步骤104：第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息。
在一些实施例中，第二车辆可以判断第一车辆的总信誉积分是否大于预设阈值，如果所述总信誉积分大于预设阈值，则将所述事件消息转发至其周围的其他车辆；如果所述总信誉积分小于预设阈值，则不转发所述事件消息。
其中，第二车辆可以根据自身实际需求设置自动转发其他车辆的事件消息的判断阈值，每辆车上设置的阈值可以相同，也可以不相同，本申请对此不进行限定。
在另一些实施例中，第二车辆针对接收的事件消息，在获取到发送者第一车辆的总信誉积分后，也可以通过输出显示第一车辆的总信誉积分，由用户决定是否转发第一车辆发送的事件消息。
参见图2所示的应用场景示意图，车辆1向其周围的车辆2、车辆3发送事件消息，车辆2、车辆3均会为车辆1的事件消息确定可信度并上传至附近的路侧单元，路侧单元根据车辆2、车辆3上传的可信度为车辆1发送的事件消息生成信誉积分，并更新区块链上存储的车辆1的总信誉积分，并将车辆1的总信誉积分发送给车辆2、车辆3，如果车辆1的总信誉积分均高于车辆2和车辆3上的预设阈值，那么车辆2和车辆3均将事件消息转发出去，从而车辆4会接收到车辆2转发的事件消息，由于车辆4接收到的事件消息为车辆2转发的，事件消息的原始发送者为车辆1，因此车辆4可以直接从区块链上获取车辆1的总信誉积分，并将车辆1的总信誉积分发送给车辆4，如果车辆1的总信誉积分高于车辆4上的预设阈值，那么车辆4将事件消息转发出去，车辆5会接收到车辆4转发的事件消息，以此类推。
而如果出现车辆1的总信誉积分低于某车辆的预设阈值，那么该车辆不再为其转发事件消息。
本申请所指区块链是分布式数据存储、点对点传输、共识机制、加密算法等计算机技术的新型应用模式。区块链(Blockchain)，本质上是一个去中心化的数据库，是一串使用密码学方法相关联产生的数据块，每一个数据块中包含了一批次网络交易的信息，用于验证其信息的有效性(防伪)和生成下一个区块。区块链可以包括区块链底层平台、平台产品服务层以及应用服务层等。
至此，完成上述图1所示的处理流程，通过上述图1流程使得接入车联网的车辆每发送一条消息出去，接收到消息的其他车辆会为该条消息生成一个信誉积分（包括正值或负值，信誉积分与可信度呈正相关），并将生成的信誉积分更新到车辆的总信誉积分中，如果车辆频繁发送一些无用消息，其总信誉积分会越来越低，其他车辆不会再为其转发散播的消息，从而可以有效约束一些不守诚信的车辆在车联网中胡乱散播消息，提升车联网的可靠性，保证车联网网络通信效率。另外，通过使用区块链技术存储车辆的总信誉积分，可以保证其不被恶意篡改，并且路侧单元每次对车辆总信誉积分的更新动作也会被记录在区块链上，使其有迹可循。
与前述车辆之间的消息通信方法的实施例相对应，本申请还提供了车辆之间的消息通信系统的实施例。
图3为本申请根据一示例性实施例示出的一种车辆之间的消息通信系统的结构示意图，如图3所示，该车辆之间的消息通信系统中包括第一车辆310、第二车辆320以及路侧单元330。
第一车辆310，用于向其周围的第二车辆320发送事件消息。
第二车辆320，用于确定所述事件消息的可信度，并将确定的可信度和所述第一车辆310的标识上传至附近的路侧单元330。
路侧单元330，用于根据所述可信度为所述第一车辆310发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆310所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆320。
第二车辆320，还用于根据第一车辆310的总信誉积分决定是否转发所述事件消息。
在本实施例中，第一车辆和第二车辆均为已接入车联网中的车辆，第一车辆在发送事件消息时通过自身安装的车载单元进行发送，并且第二车辆也通过自身安装的车载单元接收其他车辆的车载单元发送的事件消息。
示例性的，车辆与车辆之间的消息传送可以采用DSRC技术实现。
进一步地，车辆发送的事件消息可以包括道路信息、天气信息、交通事故等事件消息。并且事件消息还包括发送者（即第一车辆的标识）。
在一可选实现方式中，所述第二车辆320，具体用于在确定所述事件消息的可信度的过程中，输出显示所述事件消息和可信度选项；接收用户针对所述事件消息在所述可信度选项中所选择的可信度。
其中，可信度选项可以包括0%~100%的可选范围，其显示形式可以是滑动条、选择按键等，本申请对此不进行限定。
也就是说，通过将接收到的事件信息显示给用户，由用户判断事件信息的可信度，因为一般情况下第二车辆之所以能够接收到第一车辆的事件信息，表示两辆车所处的地理位置很近，因此第一车辆上的用户观察到的一些实时事件，通常第二车辆用户也能够观察到，因此由第二车辆上的用户对第一车辆发送的事件信息进行可信度评价更为准确有效。
在另一可选实现方式中，所述第二车辆320，具体用于在确定所述事件消息的可信度的过程中，调用部署在所述区块链上的智能合约中的可信度分析方法确定所述事件信息的可信度。
在一可选实现方式中，所述路侧单元330，具体用于在根据所述可信度为所述第一车辆310发送的事件消息生成一个信誉积分过程中，在预先配置的信誉评价表中，查找所述可信度所属的评级等级；从所述信誉评价表中，获取查找到的评级等级对应的信誉积分。
其中，获取的信誉积分可以包括正值或负值，且信誉积分与可信度之间呈正相关关系，即事件消息的可信度越高，其获得的信誉积分会越高，从而车辆因发送可信度比较高的事件消息而获得相应的积分奖励，而如果事件消息的可信度比较低，那么其获得的信誉积分会比较低，甚至为零或负值，从而车辆因发送可信度比较低的事件消息而获得相应的惩罚。
需要说明的是，由于位于第一车辆周围的车辆可能不止一辆，因此本实施例中的第二车辆可能有多辆车，并且每个第二车辆均会为接收到的事件消息确定出一个可信度，并将可信度上传至路侧单元，从而路侧单元需要根据每个第二车辆上传的可信度，为第一车辆生成一个信誉积分，为了确保信誉积分的准确度，可以根据为第一车辆生成的多个信誉积分为第一车辆发送该条事件消息确定出一个最终的信誉积分。
在一示例中，可以通过将多个信誉积分的平均值作为第一车辆发送该条事件消息得到的信誉积分。
在一可选实现方式中，所述第二车辆320，具体用于在根据第一车辆310的总信誉积分决定是否转发所述事件消息过程中，判断所述第一车辆310的总信誉积分是否大于预设阈值；如果所述总信誉积分大于预设阈值，则将所述事件消息转发至其周围的其他车辆；如果所述总信誉积分小于预设阈值，则不转发所述事件消息。
其中，第二车辆可以根据自身实际需求设置自动转发其他车辆的事件消息的判断阈值，每辆车上设置的阈值可以相同，也可以不相同，本申请对此不进行限定。
在一可选实现方式中，所述第一车辆310，还用于在向其周围的第二车辆320发送事件消息之后，将所述事件消息、发送者信息以及发送时间节点时间戳均存储到所述区块链上，以便于后续查找，由于区块链具有防数据篡改的特点，因此区块链上存储的车辆发送消息不会被恶意篡改，可以保证其私密性和安全性。其中，发送者信息可以包括第一车辆的标识、第一车辆所处的地理位置信息等。
在一可选实现方式中，所述路侧单元330，具体用于在根据所述信誉积分更新区块链上存储的第一车辆310所对应的总信誉积分过程中，将所述信誉积分累加到所述区块链上存储的第一车辆310对应的总信誉积分上。
本申请实施例还提供了一种车辆之间的消息通信装置，包括执行上述方法的部分或全部步骤的单元或模块，此处不赘述。
本申请实施例还提供了一种车辆，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行上述车辆之间的消息通信方法。该车辆可以为第一车辆和/或第二车辆，比如处理器可以调用计算机程序执行上述第一车辆和/或第二车辆执行的步骤。例如，处理器可执行以下步骤：接收第一车辆发送的事件消息，确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元，以使所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；根据第一车辆的总信誉积分决定是否转发所述事件消息。
或者，处理器还可执行以下步骤：向其周围的第二车辆发送事件消息。
可选的，处理器还可以执行上述方法实施例的其余步骤，此处不赘述。
本申请实施例还提供了一种路侧单元，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行上述的车辆之间的消息通信方法，比如执行路侧单元执行的步骤。例如，处理器可以执行以下步骤：根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分；其中，所述事件消息是所述第一车辆发送给第二车辆的，所述可信度是所述第二车辆上传的，所述第一车辆的标识是第二车辆上传的；根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，以使所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息；其中，所述信誉积分包括正值或负值，且与可信度呈正相关。
可选的，处理器还可以执行上述方法实施例的其余步骤，此处不赘述。
本申请实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时可实现上述的车辆之间的消息通信方法。比如执行第一车辆、第二车辆和/或路侧单元执行的步骤，此处不赘述。
可选的，本申请涉及的存储介质如计算机可读存储介质可以是非易失性的，也可以是易失性的。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由下面的权利要求指出。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (20)

  1. 一种车辆之间的消息通信方法，其中，所述方法包括：
    第一车辆向其周围的第二车辆发送事件消息；
    所述第二车辆确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元；
    所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；
    所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息。
  2. 根据权利要求1所述的方法，其中，所述第二车辆确定所述事件消息的可信度，包括：
    所述第二车辆输出显示所述事件消息和可信度选项；
    所述第二车辆接收用户针对所述事件消息在所述可信度选项中所选择的可信度。
  3. 根据权利要求1所述的方法，其中，所述第二车辆确定所述事件消息的可信度，包括：
    所述第二车辆调用部署在所述区块链上的智能合约中的可信度分析方法确定所述事件信息的可信度。
  4. 根据权利要求1所述的方法，其中，所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，包括：
    所述路侧单元在预先配置的信誉评价表中，查找所述可信度所属的评级等级；
    从所述信誉评价表中，获取查找到的评级等级对应的信誉积分。
  5. 根据权利要求1所述的方法，其中，所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息，包括：
    所述第二车辆判断所述第一车辆的总信誉积分是否大于预设阈值；
    如果所述总信誉积分大于预设阈值，则将所述事件消息转发至其周围的其他车辆；
    如果所述总信誉积分小于预设阈值，则不转发所述事件消息。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述第一车辆向其周围的第二车辆发送事件消息之后，将所述事件消息、发送者信息以及发送时间节点时间戳均存储到所述区块链上。
  7. 根据权利要求1所述的方法，其中，所述路侧单元根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，包括：
    所述路侧单元将所述信誉积分累加到所述区块链上存储的第一车辆对应的总信誉积分上。
  8. 一种车辆之间的消息通信系统，其中，所述系统包括：
    第一车辆，用于向其周围的第二车辆发送事件消息；
    第二车辆，用于确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元；
    路侧单元，用于根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆；
    第二车辆，还用于根据第一车辆的总信誉积分决定是否转发所述事件消息。
  9. 一种车辆，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行车辆之间的消息通信方法，所述方法包括：
    接收第一车辆发送的事件消息，确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元，以使所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；
    根据第一车辆的总信誉积分决定是否转发所述事件消息。
  10. 根据权利要求9所述的车辆，其中，执行所述确定所述事件消息的可信度，包括：
    输出显示所述事件消息和可信度选项；接收用户针对所述事件消息在所述可信度选项中所选择的可信度；或者，
    调用部署在所述区块链上的智能合约中的可信度分析方法确定所述事件信息的可信度。
  11. 根据权利要求9所述的车辆，其中，执行所述根据第一车辆的总信誉积分决定是否转发所述事件消息，包括：
    判断所述第一车辆的总信誉积分是否大于预设阈值；
    如果所述总信誉积分大于预设阈值，则将所述事件消息转发至其周围的其他车辆；
    如果所述总信誉积分小于预设阈值，则不转发所述事件消息。
  12. 一种路侧单元，包括：存储器和处理器，所述存储器存储有计算机程序，所述处理器用于调用所述计算机程序执行车辆之间的消息通信方法，所述方法包括：
    根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分；其中，所述事件消息是所述第一车辆发送给第二车辆的，所述可信度是所述第二车辆上传的，所述第一车辆的标识是第二车辆上传的；
    根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，以使所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息；其中，所述信誉积分包括正值或负值，且与可信度呈正相关。
  13. 根据权利要求12所述的路侧单元，其中，执行所述根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分，包括：
    所述路侧单元在预先配置的信誉评价表中，查找所述可信度所属的评级等级；
    从所述信誉评价表中，获取查找到的评级等级对应的信誉积分。
  14. 根据权利要求12所述的路侧单元，其中，执行所述根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，包括：
    将所述信誉积分累加到所述区块链上存储的第一车辆对应的总信誉积分上。
  15. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现车辆之间的消息通信方法，所述方法包括：
    接收第一车辆发送的事件消息，确定所述事件消息的可信度，并将确定的可信度和所述第一车辆的标识上传至附近的路侧单元，以使所述路侧单元根据所述可信度为所述第一车辆发送的事件消息生成一个信誉积分，并根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，所述信誉积分包括正值或负值，且与可信度呈正相关；
    根据第一车辆的总信誉积分决定是否转发所述事件消息。
  16. 根据权利要求15所述的计算机可读存储介质，其中，执行所述确定所述事件消息的可信度，包括：
    输出显示所述事件消息和可信度选项；接收用户针对所述事件消息在所述可信度选项中所选择的可信度；或者，
    调用部署在所述区块链上的智能合约中的可信度分析方法确定所述事件信息的可信度。
  17. 根据权利要求15所述的计算机可读存储介质，其中，执行所述根据第一车辆的总信誉积分决定是否转发所述事件消息，包括：
    判断所述第一车辆的总信誉积分是否大于预设阈值；
    如果所述总信誉积分大于预设阈值，则将所述事件消息转发至其周围的其他车辆；
    如果所述总信誉积分小于预设阈值，则不转发所述事件消息。
  18. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现车辆之间的消息通信方法，所述方法包括：
    根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分；其中，所述事件消息是所述第一车辆发送给第二车辆的，所述可信度是所述第二车辆上传的，所述第一车辆的标识是第二车辆上传的；
    根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，并从所述区块链上获取更新后的总信誉积分发送至所述第二车辆，以使所述第二车辆根据第一车辆的总信誉积分决定是否转发所述事件消息；其中，所述信誉积分包括正值或负值，且与可信度呈正相关。
  19. 根据权利要求18所述的计算机可读存储介质，其中，执行所述根据事件消息的可信度为第一车辆发送的事件消息生成一个信誉积分，包括：
    所述路侧单元在预先配置的信誉评价表中，查找所述可信度所属的评级等级；
    从所述信誉评价表中，获取查找到的评级等级对应的信誉积分。
  20. 根据权利要求18所述的计算机可读存储介质，其中，执行所述根据所述信誉积分更新区块链上存储的第一车辆所对应的总信誉积分，包括：
    将所述信誉积分累加到所述区块链上存储的第一车辆对应的总信誉积分上。
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