CN118316957A

CN118316957A - Safety determination method and device for vehicle communication, electronic equipment and storage medium

Info

Publication number: CN118316957A
Application number: CN202410375791.XA
Authority: CN
Inventors: 陈维熙; 曾成; 苏星溢; 李杨
Original assignee: Chongqing Selis Phoenix Intelligent Innovation Technology Co ltd
Current assignee: Chongqing Selis Phoenix Intelligent Innovation Technology Co ltd
Filing date: 2024-03-29
Publication date: 2024-07-09

Abstract

The application provides a safety determination method, a device, electronic equipment and a readable storage medium for vehicle communication, wherein the method comprises the following steps: when a current vehicle communicates with a vehicle to be communicated, acquiring environment information outside the vehicle; determining a communication link between the current vehicle and the vehicle to be communicated according to the environment information, and determining the main channel capacity and the eavesdropping channel capacity of the communication link; and determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity of the communication link, and determining that the communication link meets the safety communication condition when the safety channel capacity of the communication link is larger than a preset safety threshold. The technical scheme of the application can effectively solve the privacy and safety problems in vehicle communication, improve the safety and reliability of V2V communication, promote the development and application of the Internet of vehicles technology, and bring important technical progress and guarantee for the construction of intelligent cities and intelligent traffic systems.

Description

Safety determination method and device for vehicle communication, electronic equipment and storage medium

Technical Field

The present application relates to the field of vehicle communications technologies, and in particular, to a method and apparatus for determining safety of vehicle communications, an electronic device, and a storage medium.

Background

The internet of vehicles technology is used as an important driving force for intelligent cities and intelligent traffic systems in the future, and by promoting information communication among vehicles, the multiple aspects of road safety, time management efficiency, fuel economy, driving experience and the like are greatly improved. Wireless Radio Frequency (RF) technology plays a key role in Vehicle-to-Vehicle (V2V) communication authorization data transmission. Currently, dedicated short range communication (DEDICATED SHORT-Range Communication, DSRC) and Cellular Vehicle-to-EVERYTHING C-V2X (Cellular Vehicle-to-V2X) technologies are the dominant applications in the RF technology field. However, privacy and security issues become particularly pronounced due to the broadcast nature of the wireless channels of current inter-vehicle communications. Particularly in the case where the self-driving vehicle is provided with a plurality of sensors, it is difficult to simultaneously secure the security of V2V communication, which poses a challenge to the security of the entire system.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a method, an apparatus, an electronic device, and a readable storage medium for determining safety of vehicle communication, so as to solve the technical problem of low safety when a vehicle communicates with a vehicle in the prior art.

In a first aspect of an embodiment of the present application, there is provided a security determination method for vehicle communication, including: when a current vehicle communicates with a vehicle to be communicated, acquiring environment information outside the vehicle; determining a communication link between the current vehicle and the vehicle to be communicated according to the environment information, and determining the main channel capacity and the eavesdropping channel capacity of the communication link; and determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity of the communication link, and determining that the communication link meets the safety communication condition when the safety channel capacity of the communication link is larger than a preset safety threshold.

In a second aspect of the embodiment of the present application, a safety determination device for vehicle communication is provided, including an acquisition module, configured to acquire environmental information outside a vehicle when the current vehicle communicates with a vehicle to be communicated; the first determining module is used for determining a communication link between the current vehicle and the vehicle to be communicated according to the environment information and determining the main channel capacity and the eavesdropping channel capacity of the communication link; and the second determining module is used for determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity of the communication link, and determining that the communication link meets the safety communication condition when the safety channel capacity of the communication link is larger than a preset safety threshold value.

In a third aspect of the embodiments of the present application, there is provided an electronic device comprising a memory, a processor and a computer program stored in said memory and executable on said processor, the processor implementing the steps of the method as provided in the first aspect above when executing the computer program.

In a fourth aspect of the embodiments of the present application, there is provided a computer readable storage medium storing a computer program for controlling a window touch unit to implement the steps of the method as provided in the first aspect above when the computer program is executed by a processor.

Compared with the prior art, the embodiment of the application has the beneficial effects that: according to the embodiment of the application, the communication environment between the current vehicle and the vehicle to be communicated can be accurately estimated by acquiring the environment information outside the vehicle, wherein the communication environment comprises potential interference sources and potential safety hazards. And determining a communication link according to the environment information, wherein the communication link comprises the evaluation of the capacity of a main channel and the capacity of a eavesdropping channel, so that the selection of the communication link is effectively optimized, and the communication efficiency and the safety are improved. And determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity, thereby realizing effective assessment and control of the communication safety. When the safety channel capacity of the communication link exceeds a preset safety threshold, the communication link is confirmed to meet the safety communication condition, and the safety and privacy protection of data transmission are ensured. Therefore, through effectively evaluating the safety of the communication link, the eavesdropping and interference risks in the communication process can be reduced, the safety of V2V communication is improved, and guarantee is provided for the reliable operation of intelligent cities and intelligent traffic systems.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a method of security determination for vehicle communications in accordance with an embodiment of the present application;

FIG. 2 is a flow chart illustrating a communication process between a current vehicle and a vehicle to be communicated when the environmental information is daytime environmental information according to an embodiment of the present application;

FIG. 3 is a flow chart illustrating a communication process between a current vehicle and a vehicle to be communicated when the environmental information is nighttime environmental information in an embodiment of the present application;

FIG. 4 is a schematic diagram of an application scenario of a safety determination method for vehicle communication according to an embodiment of the present application;

FIG. 5 is a schematic diagram of another application scenario of a safety determination method for vehicle communication according to an embodiment of the present application

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

Fig. 1 is a flowchart of a method for determining safety of vehicle communication according to an embodiment of the present application, where the method provided by the embodiment of the present application may be performed by any electronic device having computer processing capability, such as a vehicle device of a vehicle.

As shown in fig. 1, the safety determination method of vehicle communication includes steps S110 to S130.

In step S110, when the current vehicle communicates with the vehicle to be communicated, environmental information outside the vehicle is acquired.

In step S120, a communication link between the current vehicle and the vehicle to be communicated is determined according to the environment information, and a main channel capacity and a eavesdropping channel capacity of the communication link are determined.

In step S130, the secure channel capacity of the communication link is determined according to the main channel capacity and the eavesdropping channel capacity of the communication link, and when the secure channel capacity of the communication link is greater than the preset secure threshold, it is determined that the communication link satisfies the secure communication condition.

According to the method, the communication environment between the current vehicle and the vehicle to be communicated can be accurately estimated by acquiring the environment information outside the vehicle, wherein the communication environment comprises potential interference sources and potential safety hazards. And determining a communication link according to the environment information, wherein the communication link comprises the evaluation of the capacity of a main channel and the capacity of a eavesdropping channel, so that the selection of the communication link is effectively optimized, and the communication efficiency and the safety are improved. And determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity, thereby realizing effective assessment and control of the communication safety. When the safety channel capacity of the communication link exceeds a preset safety threshold, the communication link is confirmed to meet the safety communication condition, and the safety and privacy protection of data transmission are ensured. Therefore, through effectively evaluating the safety of the communication link, the eavesdropping and interference risks in the communication process can be reduced, the safety of V2V communication is improved, and guarantee is provided for the reliable operation of intelligent cities and intelligent traffic systems.

In some embodiments, the data transmission may be performed over the communication link when the distance between the current vehicle and the vehicle to be communicated reaches a preset distance. Such a communication link may be a millimeter wave link or a visible light link, selected according to the circumstances and conditions. When the environment in which the current vehicle and the vehicle to be communicated are located is a daytime environment, communication is selected by default through the millimeter wave link. The millimeter wave communication technology has better penetrability and anti-interference capability in daytime environment, and can effectively support the data transmission requirement between vehicles. This option ensures the stability and reliability of the communication link in a complex traffic environment during the day. When the current vehicle and the vehicle to be communicated are in a night environment, the communication is carried out through a visible light link by default. In a night environment, the visible light communication technology can provide high-speed and safe data transmission, and meanwhile interference to the surrounding environment is avoided. The selection can effectively cope with the conditions of higher night visibility and good illumination condition, and ensures the stability of a communication link and the reliability of data transmission.

The following describes a communication process of the current vehicle with the vehicle to be communicated when the environmental information is daytime environmental information and a communication process of the current vehicle with the vehicle to be communicated when the environmental information is nighttime environmental information, respectively, by means of two embodiments of fig. 2 and 3.

Fig. 2 is a flow chart of a communication process between a current vehicle and a vehicle to be communicated when the environmental information is daytime environmental information in the embodiment of the application.

As shown in fig. 2, in step S210, it is determined that the communication link between the present vehicle and the vehicle to be communicated is a millimeter wave communication link according to the daytime environmental information, and the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link are determined.

Specifically, the main channel capacity of the millimeter wave communication link is calculated by the following equation (1)

Wherein,Representing the primary channel capacity of the millimeter-wave communication link,Representing the magnitude of the spectral response of the millimeter wave main channel, P _t representing the transmit power, B representing the bandwidth,Representing the noise variance, H _M,l represents the spectral response of the inter-channel interference, and N represents the total number of paths.

Calculating the eavesdropping channel capacity of the millimeter wave communication link by the formula (2):

Representing the eavesdropping channel capacity of a millimeter-wave communication link, Representing the magnitude of the spectral response of the millimeter wave eavesdropping channel, P _t representing the transmit power, B representing the bandwidth,Representing the noise variance, H _M,l represents the spectral response of the inter-channel interference, and N represents the total number of paths.

Based on the foregoing embodiments, the spectral response amplitude of the millimeter wave primary channel and the spectral response amplitude of the millimeter wave eavesdropping channel need to be calculated before the primary channel capacity and the eavesdropping channel capacity of the millimeter wave communication link are calculated. In the present embodiment, the spectral response amplitude of the millimeter wave main channel and the spectral response amplitude of the millimeter wave eavesdropping channel can be calculated by the following formula (3), specifically as follows:

wherein h _m (t) represents the spectral response amplitude of the millimeter wave main channel, namely H _m (t) may also represent the spectral response amplitude of the millimeter wave eavesdropping channel, as described aboveN _a represents the total number of paths, i.e., N in formulas (1) and (2) above. A _i denotes the amplitude of the i-th path, ψ _i denotes the phase of the i-th go path, δ () denotes the dirac function, τ _i denotes the delay of the i-th path, t denotes the propagation delay, e denotes the natural logarithmic base, and j denotes the imaginary unit.

In some embodiments, the primary channel capacity refers to the maximum amount of data that can be transmitted by a millimeter wave communication link, typically in bits per second (bps). Which reflects the transmission capacity and bandwidth of the communication link. Eavesdropping channel capacity refers to the amount of information a potential eavesdropper can obtain over a millimeter-wave communication link, typically in bits per second (bps). The size of the eavesdropping channel capacity depends on the security and encryption level of the communication link. In a vehicle communication system, the main channel capacity and the eavesdropping channel capacity of a millimeter wave communication link are determined in order to ensure the security and privacy protection of the communication link. Through the evaluation and comparison of the two capacities, the capacity of the safety channel of the communication link can be determined, so that the safety risk in the communication process is effectively controlled, and the safety and reliability of data transmission are ensured. The assessment and control means are helpful for improving the safety level of communication between vehicles and promoting the development and application of intelligent traffic systems.

In step S220, the secure channel capacity of the millimeter wave communication link is determined according to the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link, and when the secure channel capacity of the millimeter wave communication link is greater than a preset secure threshold, it is determined that the millimeter wave communication link satisfies the secure communication condition.

Specifically, the secure channel capacity of the millimeter wave communication link is calculated by the following equation (4):

where C _H represents the secure channel capacity of the millimeter-wave communication link, Representing the primary channel capacity of the millimeter-wave communication link,Representing the eavesdropping channel capacity of the millimeter wave communication link. 0 represents a preset safety threshold. In the present embodiment, whenGreater than 0, i.e. C _H isI.e., the millimeter wave communication link satisfies the secure communication condition. In contrast, whenAnd 0 or less, i.e., C _H is 0, i.e., the millimeter wave communication link does not satisfy the secure communication condition.

Based on the foregoing embodiments, in the vehicle communication system, the determination of the secure channel capacity of the millimeter wave communication link based on the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link is to evaluate the security of the communication link and to ensure the privacy and security of data transmission. Secure channel capacity refers to the maximum amount of data that can be securely transmitted over a millimeter wave communication link, typically in bits per second (bps). The security of the communication link can be effectively assessed by determining the secure channel capacity by considering the primary channel capacity and the eavesdropping channel capacity in combination. The secure channel capacity is typically determined by comparing the primary channel capacity to the eavesdropping channel capacity. If the value of the main channel capacity minus the eavesdropping channel capacity is greater than zero, i.e. the secure channel capacity is greater than zero, it indicates that the communication link has a certain security guarantee. When the secure channel capacity of the millimeter wave communication link is greater than a preset secure threshold, that is, the secure channel capacity exceeds a secure threshold set by the system, it may be determined that the millimeter wave communication link satisfies the secure communication condition. In this embodiment, by setting a preset security threshold, the security of the communication link can be ensured to reach a certain standard, and the privacy and security in the data transmission process are ensured. The security assessment and control mechanism is beneficial to improving the security level of a vehicle communication system, preventing potential attack and eavesdropping risks and guaranteeing the privacy and the integrity of data transmission among vehicles. The innovative technical scheme can promote the development of the internet of vehicles technology and provide more reliable communication support for intelligent cities and intelligent traffic systems.

In some embodiments, the above method further comprises: when the secure channel capacity of the millimeter wave communication link is smaller than or equal to a preset secure threshold value, determining that the millimeter wave communication link does not meet the secure communication condition; when the millimeter wave communication link does not meet the safety communication condition, switching the millimeter wave communication link to a visible light communication link, and determining the main channel capacity and the eavesdropping channel capacity of the visible light communication link; and determining the safety channel capacity of the visible light communication link according to the main channel capacity and the interception channel capacity of the visible light communication link, and determining that the visible light communication link meets the safety communication condition when the safety channel capacity of the visible light communication link is larger than a preset safety threshold.

Based on the foregoing embodiments, in the vehicle communication system, when the secure channel capacity of the millimeter wave communication link is equal to or smaller than the preset secure threshold value, that is, the secure channel capacity does not reach the security standard set by the system, measures are taken to ensure the security of the communication at this time. For example, the millimeter wave communication link may be switched to the visible light communication link, and the security of the communication may be evaluated based on the characteristics of the visible light communication link. The safety of data transmission is ensured by utilizing the characteristics of visible light communication. The main channel capacity and the eavesdropping channel capacity of the visible light communication link are determined, and the reliability and the safety of communication are ensured by evaluating the transmission capacity and the safety of the visible light communication link. And calculating the safety channel capacity according to the main channel capacity and the eavesdropping channel capacity of the visible light communication link, and ensuring the safety of the communication link in the visible light communication environment. When the safety channel capacity of the visible light communication link is larger than a preset safety threshold, namely the safety channel capacity exceeds the safety standard set by the system, the visible light communication link can be determined to meet the safety communication condition, and data transmission can be continued. By the method, when the millimeter wave communication link does not meet the safety communication condition, the communication can be switched to the visible light communication link, and the safety of the communication is evaluated according to the characteristics of the visible light communication link, so that the safety level of the vehicle communication system can be effectively improved. The switching and evaluation mechanism is helpful to deal with challenges in terms of communication security, ensures privacy and integrity of data transmission among vehicles, and provides more reliable communication support for development of intelligent cities and intelligent traffic systems. In this embodiment, the main channel capacity and the eavesdropping channel capacity of the visible light communication link are determined; and determining the secure channel capacity of the visible light communication link based on the primary channel capacity and the eavesdropping channel capacity of the visible light communication link, reference may be made to the formulas set forth in the embodiment of fig. 3.

Based on the foregoing embodiment, when the environmental information is daytime environmental information, and the secure communication capacity of the visible light communication link after switching the link is also less than or equal to the preset secure threshold, the method may further include: when the safety channel capacity of the visible light communication link is smaller than or equal to a preset safety threshold, determining that the visible light communication link does not meet the safety communication condition, and switching the visible light communication link to the relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link. For example, when the secure channel capacity of the visible light communication link is less than or equal to a preset secure threshold, that is, the secure channel capacity does not reach the security standard set by the system, it may be determined that the visible light communication link does not meet the secure communication condition. In order to ensure the safety and reliability of communication, it is necessary to switch the communication link from the visible light communication to the relay forwarding link, through which data transmission between vehicles is realized. The relay forwarding link serves as an intermediate node for data transmission, receives data from the current vehicle and forwards the data to the vehicle to be communicated, so that communication connection among the vehicles is realized. By switching the visible light communication link to the relay forwarding link, the situation that the safety of the visible light communication link is insufficient can be dealt with, and the safety and reliability of data transmission among vehicles can be ensured. The introduction of the relay forwarding link provides a backup way of communication to ensure that the communication connection between vehicles is not interrupted by security problems. This mechanism of switching to the relay forwarding link helps to improve the robustness and security of the vehicle communication system.

In some embodiments, when the environmental information is daytime environmental information, a millimeter wave link is employed by default for communication between the current vehicle and the vehicle to be communicated. When determining that the millimeter wave link is adopted for communication between the current vehicle and the vehicle to be communicated, the method further comprises determining whether a spectrum of the millimeter wave link is crowded when the communication link is the millimeter wave link. For example, in a daytime environment, millimeter wave links are generally selected by default for inter-vehicle communication due to their high transmission rate and low latency, to meet the demand for high-speed data transmission. When determining to use a millimeter wave link for communication, the use condition of the current spectrum needs to be evaluated to avoid the problem that the communication quality is reduced or the communication is interrupted due to spectrum congestion. Through spectrum scanning and spectrum analysis technology, the use condition of the current millimeter wave frequency band can be detected and identified, including the occupied spectrum and the available spectrum. If the current millimeter wave communication link has a crowded condition of the frequency spectrum, the link can be switched to the visible light link so as to complete the communication between the current vehicle and the vehicle to be communicated through the visible light link, and thus the stability and the reliability of the communication can be ensured. By considering the spectrum service condition of the millimeter wave link, the communication problem caused by spectrum congestion can be avoided, and smooth communication among vehicles is ensured. The effective implementation of spectrum management helps to optimize the performance of the communication system and improve the communication efficiency.

Fig. 3 is a flow chart illustrating a communication process between a current vehicle and a vehicle to be communicated when the environmental information is nighttime environmental information in the embodiment of the application.

As shown in fig. 3, in step S310, it is determined that the communication link between the current vehicle and the vehicle to be communicated is a visible light communication link according to the night environment information, and the main channel capacity and the eavesdropping channel capacity of the visible light communication link are determined.

Specifically, the main channel capacity of the visible light communication link is calculated by the following equation (5)

Wherein,Represents the main channel capacity of the visible light communication link, B represents the bandwidth, P _t represents the transmit power, eta is the electro-optic conversion,Indicating the receiver responsiveness, indicating the minimum signal power that the receiver can detect,Representing the channel gain of the main channel of the visible light communication,Representing the noise variance, N represents the number of rays emitted from the vehicle's light emitters and received by the receiver, and H _K,l represents the channel gain of the inter-channel interfering link.

Calculating the eavesdropping channel capacity of the visible light communication link by the following equation (6)

Wherein,Represents the capacity of the eavesdropping channel of the visible light communication link, B represents the bandwidth, P _t represents the transmit power, eta is the electro-optic conversion,Indicating the receiver responsiveness, indicating the minimum signal power that the receiver can detect,Indicating the channel gain of a visible light communication eavesdropping channel,Representing the noise variance, N represents the number of rays emitted from the vehicle's light emitters and received by the receiver, and H _K,l represents the channel gain of the inter-channel interfering link.

Based on the foregoing embodiments, it is necessary to calculate the channel gain of the visible light communication main channel and the channel gain of the visible light communication eavesdropping channel before calculating the main channel capacity and the eavesdropping channel capacity of the visible light communication link. In this embodiment, the channel gain of the main channel of the visible light communication and the channel gain of the interception channel of the visible light communication can be calculated by the following formula (7), specifically as follows:

wherein h _v (t) represents the channel gain of the main channel of visible light communication, i.e. the above H _v (t) may also represent the channel gain of the visible light communication eavesdropping channel, i.e. as described aboveN _v represents the number of rays emitted from the vehicle light emitter and received by the receiver, i.e., N in formulas (5) and (6) above. P _k denotes the transmit power of the kth ray. Delta () represents the dirac function, τ _k represents the delay of the kth ray, and t represents the propagation delay.

In step S320, the secure channel capacity of the visible light communication link is determined according to the main channel capacity and the eavesdropping channel capacity of the visible light communication link, and when the secure channel capacity of the visible light communication link is greater than the preset secure threshold, it is determined that the visible light communication link satisfies the secure communication condition.

Specifically, the secure channel capacity of the millimeter wave communication link is calculated by the following equation (8):

Wherein C _K denotes the secure channel capacity of the visible light communication link, Representing the primary channel capacity of the visible light communication link,Representing the capacity of the eavesdropping channel of the visible light communication link. 0 represents a preset safety threshold. In the present embodiment, whenGreater than 0, i.e. C _K isI.e. the visible light communication link fulfils the safety communication conditions. In contrast, whenAnd if the value is less than or equal to 0, namely C _K is 0, the visible light communication link does not meet the safety communication condition.

Based on the foregoing embodiments, in the nighttime environment, since the visible light communication has better stability and reliability in the nighttime environment, the visible light communication link is generally selected as the communication mode according to the signal characteristics of the nighttime environment. The capacity of the visible light main channel refers to the maximum amount of information that the visible light communication link can transmit without interference, and depends on factors such as the bandwidth and signal-to-noise ratio of the communication link. The capacity of a visible light eavesdropping channel represents the amount of communication link information that a potential eavesdropper can obtain, and security and privacy protection of the communication link need to be considered. By comparing the capacity of the visible light primary channel with the capacity of the visible light eavesdropping channel, the capacity of the security channel of the visible light communication link, i.e., the amount of security information that the communication link can transmit without being hacked by an eavesdropper, can be determined. In this embodiment, a preset security threshold is set to determine the security of the communication link. When the safety channel capacity of the visible light communication link is larger than a preset safety threshold, the visible light communication link is indicated to have enough safety, and the visible light communication link can be determined to meet the safety communication condition. Through the execution of the steps, the type of the communication link can be determined according to the characteristics of the night environment signals, the safety of the visible light communication link can be evaluated, and the information safety and privacy protection in the communication process are ensured. The method based on the capacity and the safety threshold is beneficial to optimizing the performance of the communication system, improving the safety of the communication link and providing more reliable communication support for intelligent cities and intelligent traffic systems.

In some embodiments, for the environmental information to be night-time environmental information, the method further comprises: when the capacity of the safety channel of the visible light communication link is smaller than or equal to a preset safety threshold value, determining that the visible light communication link does not meet the safety communication condition; when the visible light communication link does not meet the safety communication condition, switching the visible light communication link to the millimeter wave communication link, and determining the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link; and determining the safety channel capacity of the millimeter wave communication link according to the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link, and determining that the millimeter wave communication link meets the safety communication condition when the safety channel capacity of the millimeter wave communication link is larger than a preset safety threshold value.

Based on the foregoing embodiments, the method of communication link selection and security assessment between vehicles in a night environment may be described in detail as follows: the initial communication link is selected as the visible light communication link, and the secure channel capacity of the current visible light communication link is first estimated based on the night time environment information. And if the evaluation result shows that the capacity of the safety channel of the visible light communication link is smaller than or equal to a preset safety threshold value, judging that the link does not meet the safety communication condition. When the visible light communication link does not satisfy the secure communication condition, the communication link is switched from the visible light to the millimeter wave communication link. After the handoff, the primary channel capacity and the eavesdropping channel capacity of the millimeter wave communication link are evaluated. The secure channel capacity is calculated based on the primary channel capacity and the eavesdropping channel capacity of the millimeter wave communication link. And if the secure channel capacity of the millimeter wave communication link is larger than a preset secure threshold, determining that the millimeter wave communication link meets the secure communication condition. The method ensures the safety of the communication between vehicles in the night environment by dynamically evaluating and switching the communication links. The visible light communication link can be diverted to the millimeter wave communication link in time when the visible light communication link is no longer safe or reliable, so that the stability and the safety of communication are maintained. The flexible communication link management strategy is an important component of the safety communication of the Internet of vehicles, and is beneficial to improving the overall performance of the intelligent traffic system.

In some embodiments, when the environment information is night environment information and the secure communication capacity of the millimeter wave communication link is also less than or equal to a preset secure threshold after the link is switched, the method further includes determining that the millimeter wave communication link does not satisfy the secure communication condition when the secure channel capacity of the millimeter wave communication link is less than or equal to the preset secure threshold, and switching the millimeter wave communication link to the relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link.

Based on the foregoing embodiments, under nighttime environmental information, after switching to a millimeter wave communication link, the secure channel capacity of the link is evaluated. And if the capacity of the security channel of the millimeter wave communication link does not meet the preset security threshold value at the moment, judging that the link also does not meet the security communication condition. At this time, the millimeter wave communication link is switched to the relay forwarding link. The relay forwarding link refers to forwarding a communication signal between two vehicles through a third party device (e.g., a third vehicle satisfying a preset distance from the current vehicle and the vehicle to be communicated). The current vehicle and the vehicle to be communicated can communicate through the relay forwarding link. The key to this approach is the ability to dynamically switch the communication link based on real-time environmental information and the security capabilities of the communication link. Under the night environment, as visible light communication may be limited and millimeter wave communication links may not meet the safety requirements, the system adopts a relay forwarding link as an alternative scheme to ensure that communication between vehicles is not limited by the environment and reaches preset safety standards. The multi-layer link switching mechanism greatly improves the adaptability of the Internet of vehicles in a complex environment and the safety of communication.

In some embodiments, when the environmental information is night-time environmental information, a visible light link is used by default for communication between the current vehicle and the vehicle to be communicated. When determining that the communication between the current vehicle and the vehicle to be communicated is performed by adopting the visible light link, the method further comprises determining whether a congestion condition exists in the frequency spectrum of the visible light link when the communication link is the visible light link. For example, in intelligent transportation systems, especially in the context of internet of vehicles (V2V) applications, environmental information is critical to the selection of communication links. In the night environment, the communication between vehicles is performed by adopting a visible light communication link by default, because the visible light communication has the advantages of high bandwidth, low interference, privacy protection and the like, and is particularly suitable for being used in the environment with weaker illumination. Specifically, when it is detected that the environmental information is nighttime, communication between vehicles using a visible light link is first considered. Even at night, since the light of the vehicle can be used as a communication medium, the visible light communication can be effectively utilized. After determining to use the visible light link, the spectrum usage of the link is further evaluated to check if spectrum congestion exists. Spectrum congestion refers to the very dense communication activity in a particular frequency range, which may lead to signal interference and reduced transmission efficiency. If the spectrum of the visible link does have congestion, this may affect the quality and stability of the communication and may even reduce the security of the communication. If spectrum congestion is detected, the system may need to take action, such as switching to another communication link (e.g., a millimeter wave communication link) to avoid congestion problems. These adjustments can reduce interference and improve reliability and security of communications. In this way, the internet of vehicles system can intelligently adapt to different environmental conditions and real-time states of communication links, and ensure that the communication between vehicles can be kept efficient and safe under various conditions. The method is important to realizing a highly-automatic intelligent traffic system, can improve road safety, reduce traffic jam and improve traffic efficiency.

The implementation of the above method in different scenarios is described below by means of the two scenarios of fig. 4 and 5.

As shown in fig. 4, in the V2V communication scenario with three lanes, the current vehicle is B, and a wireless channel is established to share data to the receiving vehicle a (i.e., the vehicle to be communicated), where a and B are in the same lane and are traveling centrally. The invading vehicle C is in a third lane and is illegally intercepting and acquiring the transmitted data. For this scenario, if the environment is a daytime environment, defaults a and B use millimeter wave links to communicate, and calculate the secure communication capacity of the millimeter wave communication links according to the formula described in the embodiment of fig. 2, and determine whether the current millimeter wave communication link satisfies the secure communication condition according to the secure communication capacity, that is, whether the secure communication capacity is greater than a preset secure threshold. If the current millimeter wave communication link does not meet the safety communication condition, switching the communication links of A and B to the visible light communication link, calculating the safety communication capacity of the visible light communication link through a formula described in the embodiment of fig. 3, and when the safety communication capacity of the visible light communication link is larger than a preset safety threshold value, the A and B can normally transmit data. For this scenario, if the environment is a night-time environment, it can be determined with reference to the technical scheme described in fig. 3 whether a and B can communicate securely.

As shown in fig. 5, the same is a three-lane scene, the invasive vehicle C is in the same lane as a and B, the invasive vehicle C is in a third lane, and the transmitted data is being illegally intercepted and acquired. For this scenario, if the environment is a daytime environment, defaults a and B use millimeter wave links to communicate, and calculate the secure communication capacity of the millimeter wave communication links according to the formula described in the embodiment of fig. 2, and determine whether the current millimeter wave communication link satisfies the secure communication condition according to the secure communication capacity, that is, whether the secure communication capacity is greater than a preset secure threshold. If the current millimeter wave communication link does not meet the safety communication condition, switching the communication links of A and B to the visible light communication link, calculating the safety communication capacity of the visible light communication link through a formula described in the embodiment of fig. 3, and determining that the visible light communication link does not meet the safety communication condition when the safety communication capacity of the visible light communication link is smaller than or equal to a preset safety threshold value. In this scenario, the communication link may be switched to the relay link. For example, vehicle D or vehicle E may be used as a backup link over which B's data may be transmitted to a. For this scenario, if the environment is a night-time environment, it can be determined with reference to the technical scheme described in fig. 3 whether a and B can communicate securely.

Fig. 6 is a block diagram of a safety determination apparatus for vehicle communication according to an embodiment of the present application, and as shown in fig. 6, a block diagram 600 of the safety determination apparatus for vehicle communication includes an acquisition module 610, a first determination module 620, and a second determination module 630.

Specifically, the acquiring module 610 is configured to acquire environmental information outside the vehicle when the current vehicle communicates with the vehicle to be communicated.

The first determining module 620 is configured to determine a communication link between the current vehicle and the vehicle to be communicated according to the environmental information, and determine a main channel capacity and a eavesdropping channel capacity of the communication link.

The second determining module 630 is configured to determine a secure channel capacity of the communication link according to the primary channel capacity and the eavesdropping channel capacity of the communication link, and determine that the communication link meets a secure communication condition when the secure channel capacity of the communication link is greater than a preset secure threshold.

The block diagram 600 of the safety determination apparatus for vehicle communication can more accurately evaluate the communication environment between the current vehicle and the vehicle to be communicated, including potential interference sources and potential safety hazards, by acquiring environment information outside the vehicle. And determining a communication link according to the environment information, wherein the communication link comprises the evaluation of the capacity of a main channel and the capacity of a eavesdropping channel, so that the selection of the communication link is effectively optimized, and the communication efficiency and the safety are improved. And determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity, thereby realizing effective assessment and control of the communication safety. When the safety channel capacity of the communication link exceeds a preset safety threshold, the communication link is confirmed to meet the safety communication condition, and the safety and privacy protection of data transmission are ensured. Therefore, through effectively evaluating the safety of the communication link, the eavesdropping and interference risks in the communication process can be reduced, the safety of V2V communication is improved, and guarantee is provided for the reliable operation of intelligent cities and intelligent traffic systems.

In some embodiments, the environmental information is daytime environmental information, and the first determination module 620 is configured to: determining a communication link between a current vehicle and a vehicle to be communicated as a millimeter wave communication link according to daytime environmental information, and determining the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link; the second determination module 630 is configured to: and determining the safety channel capacity of the millimeter wave communication link according to the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link, and determining that the millimeter wave communication link meets the safety communication condition when the safety channel capacity of the millimeter wave communication link is larger than a preset safety threshold value.

In some embodiments, the block diagram 600 of the safety determination device for vehicle communication is further configured to: when the secure channel capacity of the millimeter wave communication link is smaller than or equal to a preset secure threshold value, determining that the millimeter wave communication link does not meet the secure communication condition; when the millimeter wave communication link does not meet the safety communication condition, switching the millimeter wave communication link to a visible light communication link, and determining the main channel capacity and the eavesdropping channel capacity of the visible light communication link; and determining the safety channel capacity of the visible light communication link according to the main channel capacity and the interception channel capacity of the visible light communication link, and determining that the visible light communication link meets the safety communication condition when the safety channel capacity of the visible light communication link is larger than a preset safety threshold.

In some embodiments, the environmental information is night-time environmental information, and the first determination module 620 is configured to: determining a communication link between a current vehicle and a vehicle to be communicated as a visible light communication link according to night environment information, and determining the main channel capacity and the eavesdropping channel capacity of the visible light communication link; the second determination module 630 is configured to: and determining the safety channel capacity of the visible light communication link according to the main channel capacity and the interception channel capacity of the visible light communication link, and determining that the visible light communication link meets the safety communication condition when the safety channel capacity of the visible light communication link is larger than a preset safety threshold.

In some embodiments, the block diagram 600 of the safety determination device for vehicle communication is further configured to: when the capacity of the safety channel of the visible light communication link is smaller than or equal to a preset safety threshold value, determining that the visible light communication link does not meet the safety communication condition; when the visible light communication link does not meet the safety communication condition, switching the visible light communication link to the millimeter wave communication link, and determining the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link; and determining the safety channel capacity of the millimeter wave communication link according to the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link, and determining that the millimeter wave communication link meets the safety communication condition when the safety channel capacity of the millimeter wave communication link is larger than a preset safety threshold value.

In some embodiments, the block diagram 600 of the safety determination device for vehicle communication is further configured to: when the safety channel capacity of the visible light communication link is smaller than or equal to a preset safety threshold, determining that the visible light communication link does not meet the safety communication condition, and switching the visible light communication link to the relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link; when the secure channel capacity of the millimeter wave communication link is smaller than or equal to a preset secure threshold, determining that the millimeter wave communication link does not meet the secure communication condition, and switching the millimeter wave communication link to the relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link.

In some embodiments, the block diagram 600 of the security determination device for vehicle communications is further configured to, prior to determining the primary channel capacity and the eavesdropping channel capacity of the communication link: when the communication link is a millimeter wave link, determining whether the spectrum of the millimeter wave link is crowded; when the communication link is a visible light link, it is determined whether a congestion condition exists in the spectrum of the visible light link.

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 6, an electronic device 600 according to the embodiment includes: a processor 610, a memory 620, and a computer program 630 stored in the memory 620 and executable on the processor 610. The steps of the various method embodiments described above are implemented by processor 610 when executing computer program 630. Or the processor 610, when executing the computer program 630, performs the functions of the modules in the apparatus embodiments described above.

The electronic device 600 may be an electronic device mounted on a vehicle. The electronic device 600 may include, but is not limited to, a processor 610 and a memory 620. It will be appreciated by those skilled in the art that fig. 6 is merely an example of an electronic device 600 and is not limiting of the electronic device 600 and may include more or fewer components than shown, or different components.

The Processor 610 may be a central processing unit (Central Processing Unit, CPU) or other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.

The memory 620 may be an internal storage unit of the electronic device 600, for example, a hard disk or a memory of the electronic device 600. The memory 620 may also be an external storage device of the electronic device 600, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), etc. that are provided on the electronic device 600. Memory 620 may also include both internal storage units and external storage devices of electronic device 600. The memory 620 is used to store computer programs and other programs and data required by the electronic device.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit.

The integrated module, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium (e.g., a computer readable storage medium). Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A method of determining safety of vehicle communications, the method comprising:

when a current vehicle communicates with a vehicle to be communicated, acquiring environment information outside the vehicle;

determining a communication link between the current vehicle and the vehicle to be communicated according to the environment information, and determining a main channel capacity and an eavesdropping channel capacity of the communication link;

and determining the safety channel capacity of the communication link according to the main channel capacity and the interception channel capacity of the communication link, and determining that the communication link meets the safety communication condition when the safety channel capacity of the communication link is larger than a preset safety threshold.

2. The method of claim 1, wherein the environmental information is daytime environmental information, wherein determining a communication link between the current vehicle and the vehicle to be communicated based on the environmental information, and wherein determining a primary channel capacity and a eavesdropping channel capacity of the communication link comprises:

Determining a communication link between the current vehicle and the vehicle to be communicated as a millimeter wave communication link according to the daytime environmental information, and determining the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link;

Determining the secure channel capacity of the communication link according to the primary channel capacity and the eavesdropping channel capacity of the communication link, and when the secure channel capacity of the communication link is greater than a preset secure threshold, determining that the communication link meets secure communication conditions includes:

And determining the safety channel capacity of the millimeter wave communication link according to the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link, and determining that the millimeter wave communication link meets the safety communication condition when the safety channel capacity of the millimeter wave communication link is larger than the preset safety threshold.

3. The method according to claim 2, wherein the method further comprises:

when the secure channel capacity of the millimeter wave communication link is smaller than or equal to the preset secure threshold, determining that the millimeter wave communication link does not meet the secure communication condition;

When the millimeter wave communication link does not meet the safety communication condition, switching the millimeter wave communication link to a visible light communication link, and determining the main channel capacity and the eavesdropping channel capacity of the visible light communication link;

And determining the safety channel capacity of the visible light communication link according to the main channel capacity and the eavesdropping channel capacity of the visible light communication link, and determining that the visible light communication link meets the safety communication condition when the safety channel capacity of the visible light communication link is larger than the preset safety threshold.

4. The method of claim 1, wherein the environmental information is night-time environmental information, wherein determining a communication link between the current vehicle and the vehicle to be communicated based on the environmental information, and wherein determining a primary channel capacity and a eavesdropping channel capacity of the communication link comprises:

Determining that a communication link between the current vehicle and the vehicle to be communicated is a visible light communication link according to the night environment information, and determining the main channel capacity and the eavesdropping channel capacity of the visible light communication link;

5. The method according to claim 4, wherein the method further comprises:

When the safety channel capacity of the visible light communication link is smaller than or equal to the preset safety threshold value, determining that the visible light communication link does not meet the safety communication condition;

When the visible light communication link does not meet the safety communication condition, switching the visible light communication link to a millimeter wave communication link, and determining the main channel capacity and the eavesdropping channel capacity of the millimeter wave communication link;

6. The method according to claim 3 or 5, characterized in that the method further comprises:

When the safety channel capacity of the visible light communication link is smaller than or equal to the preset safety threshold, determining that the visible light communication link does not meet the safety communication condition, and switching the visible light communication link to a relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link;

When the secure channel capacity of the millimeter wave communication link is smaller than or equal to the preset secure threshold, determining that the millimeter wave communication link does not meet the secure communication condition, and switching the millimeter wave communication link to a relay forwarding link so that the current vehicle and the vehicle to be communicated communicate through the relay forwarding link.

7. The method of claim 1, wherein prior to determining the primary channel capacity and the eavesdropping channel capacity of the communication link, the method further comprises:

when the communication link is a millimeter wave link, determining whether a spectrum of the millimeter wave link is crowded;

When the communication link is a visible light link, determining whether a congestion condition exists in the frequency spectrum of the visible light link.

8. A security determination apparatus for vehicle communication, the apparatus comprising:

the acquisition module is used for acquiring environment information outside the vehicle when the current vehicle communicates with the vehicle to be communicated;

The first determining module is used for determining a communication link between the current vehicle and the vehicle to be communicated according to the environment information, and determining the main channel capacity and the eavesdropping channel capacity of the communication link;

And the second determining module is used for determining the safety channel capacity of the communication link according to the main channel capacity and the eavesdropping channel capacity of the communication link, and determining that the communication link meets the safety communication condition when the safety channel capacity of the communication link is larger than a preset safety threshold value.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 7 when the computer program is executed.

10. A readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 7.