A communication transmission control method for a vehicle networking based on 5G

Abstract

The present invention discloses a communication transmission control method for a vehicle networking based on 5G, which specifically relates to the field of vehicle communication transmission and includes a vehicle terminal, an information processing terminal, a roadside unit, a 5G base station, a core network, and a control center. The vehicle terminal is equipped with a 5G communication module and a sensor group, and the roadside units are distributed along the road and connected to the 5G base station; Vehicle terminal: It is a basic component directly related to the vehicle in the vehicle networking, and the 5G communication module and the sensor group it is equipped with play a crucial role; 5G communication module: It is responsible for wireless communication with the outside world and realizes data transmission between the vehicle and the roadside unit and the 5G base station; The present invention makes full use of the characteristics of the 5G network, closely combines the vehicle acceleration and the real-time network environment, precisely adjusts the communication strategy for data with different priorities, greatly improves the data transmission efficiency and reliability, and builds a solid defense line for driving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle communication transmission, and more specifically, to a communication transmission control method for a vehicle networking based on 5G. Background Art

[0002] In the intelligent transportation system, vehicle networking, as a core technology, undertakes the important task of efficient information interaction between vehicles and the outside world, and is the key to improving traffic efficiency and ensuring driving safety. However, current vehicle networking communications face many severe challenges. In the scenario of high-speed vehicle driving, traditional communication networks have frequent signal switching and are extremely prone to interruption. At the same time, in areas with dense traffic flow, a large number of vehicles transmit data concurrently, and the existing network bandwidth is difficult to meet the demand, resulting in low data transmission rates and serious information delays. Existing communication transmission control methods have insufficient perception and response capabilities to vehicle dynamic changes and network real-time conditions, and it is difficult to flexibly and accurately adjust communication strategies, thus causing network congestion, greatly affecting the timeliness and stability of data transmission, and severely restricting the full play of vehicle networking functions. Summary of the Invention

[0003] In view of this, the present invention proposes a communication transmission control method for a vehicle networking based on 5G. By deeply exploring the excellent advantages of the 5G network and real-time monitoring the vehicle status and network environment in multiple aspects, the dynamic intelligent adjustment of communication strategies is realized, ensuring that vehicle networking communications always maintain efficient and stable operation, and effectively solving the problems mentioned in the background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A communication transmission control method for a vehicle networking based on 5G, including a vehicle terminal, an information processing terminal, a roadside unit, a 5G base station, a core network, and a control center. The vehicle terminal is equipped with a 5G communication module and a sensor group. The roadside units are distributed along the road and are connected to the 5G base station. The method specifically includes the following steps:

[0005] S1. Information collection step: During the driving process of the vehicle, the vehicle uses the in-vehicle sensor group to collect its own information in real time, and the vehicle terminal monitors the environmental information through the 5G communication module;

[0006] S2. Priority confirmation step: The information processing terminal determines the priority of data transmission according to the collected information and application requirements;

[0007] S3. Dynamic communication strategy adjustment step: According to the collected data, for data with different priorities, the information processing terminal dynamically adjusts the communication strategy, including the transmission rate and the retransmission mechanism;

[0008] S4. Resource Allocation Step: The vehicle terminal interacts with the roadside unit according to the adjusted strategy, and the roadside unit collects the data of surrounding vehicles and forwards it to the 5G base station, which then transmits the data to the core network for resource allocation;

[0009] S5. Communication Effect Evaluation Step: The control center collects the data information fed back by the vehicle terminal, roadside unit and 5G base station, and evaluates the communication effect through the information processing terminal;

[0010] S6. Feedback Optimization Step: The control center establishes corresponding data thresholds and performs optimization operations in combination with the evaluation results.

[0011] Preferably, the vehicle's own information includes the acceleration a, and the environmental information includes the network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B; among them, the acceleration is collected by an acceleration sensor; the network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B are obtained by parsing relevant signaling from the 5G network by the 5G communication module.

[0012] Preferably, the specific method for determining the priority of data transmission is: dividing the vehicle networking data into safety data P s , traffic data P t , and entertainment data P e , and P s = 3 > P t = 2 > P e = 1, where the safety data includes the vehicle's emergency braking signal, forward vehicle collision warning, and road obstacle detection information. When the acceleration a is less than the emergency braking acceleration threshold of -5 m / s² during vehicle braking, the vehicle's emergency braking signal is triggered; when the relative speed V r and relative distance D r satisfy and V r > 0, the forward vehicle collision warning is triggered; the road obstacle detection information is uploaded by in-vehicle sensors; the traffic data includes real-time traffic congestion information and traffic signal status, both of which are obtained and transmitted by the roadside unit; the entertainment data includes online music and video playback.

[0013] Preferably, the adjustment of the transmission rate is as follows: comprehensively considering the network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B, when S >= 140 dBm and SINR >= 0 dB, first calculate the theoretical transmission rate and the absolute value of the acceleration |a| > 2 m / s² 2 , when the signal strength S <= -105 dBm, then adjust the transmission rate; adjust the transmission rate of safety data Adjust the transmission rate of traffic data Adjust the transmission rate of entertainment data

[0014] Preferably, the adjustment of the retransmission mechanism is as follows: Set the timeout period T for waiting for confirmation of data transmission def = 0.5 s. If no confirmation message is received within T def , it is determined that the transmission fails and retransmission is required;

[0015] (1) When the absolute value of acceleration |a| <= 2 m / s 2 , for safety-class data, retransmit immediately, and the maximum number of retransmissions is 3 times; for traffic-class data, the first retransmission time interval T r1 = T def， ×1.5. If it fails again, the retransmission time interval T r2 = T r1 ×2 and the maximum number of retransmissions is 2 times; for entertainment-class data, the first retransmission time interval T e1 = T def ×2. If it fails again, the retransmission time interval T e2 = T e1 ×2 and the maximum number of retransmissions is 2 times;

[0016] (2) When the absolute value of acceleration |a| > 2 m / s 2 , for safety-class data, retransmit immediately and the upper limit is 3 times. If the acceleration remains large and the network signal strength S < -105 dBm, increase the redundancy ratio of the retransmitted data For traffic-class data, the first retransmission time interval If it fails again, the retransmission time interval T r2 = T r1 ×2 and the maximum number of retransmissions is 2 times; for entertainment-class data, the first retransmission interval If it fails again, the retransmission time interval T e2 = T e1 ×2 and the maximum number of retransmissions is 2 times.

[0017] Preferably, the specific method of resource allocation is as follows: The information processing terminal first calculates the network load where B i is the bandwidth occupancy of the vehicle using the network resource currently, and B total is the total bandwidth of the 5G base station. The 5G base station then dynamically allocates resources according to the network load; when L < 0.8, give priority to ensuring the bandwidth of safety-class data and reduce the bandwidth allocation of entertainment-class data. The bandwidth adjustment ratio is: increase for safety-class data decrease for entertainment-class data When L ≥ 0.8, the bandwidth of traffic-class data is also appropriately reduced, and the reduction ratio is The reduced bandwidth is preferentially allocated to safety-class data.

[0018] Preferably, the evaluation of communication effect includes data transmission success rate Average transmission delay And packet loss rate Wherein, P i Represents the priority of the i-th type of data, N i-s Represents the amount of successfully transmitted data of the i-th type of data, N i-t Represents the total amount of transmitted data of the i-th type of data, m represents the number of categories and is 3; T j Represents the delay time of the j-th data transmission, a j Represents the acceleration of the vehicle during the j-th transmission, S j Represents the network signal strength during the j-th transmission, SINR j Represents the signal-to-interference-plus-noise ratio during the j-th transmission, S0 and SINR0 respectively represent the signal strength threshold and the signal-to-interference-plus-noise ratio threshold, n represents the total number of data transmissions; P k Represents the priority of the k-th type of data, N k-l Represents the amount of lost data of the k-th type of data, N k-t Represents the total amount of transmitted data of the k-th type of data, m represents the number of categories and is 3.

[0019] 8. Preferably, the specific method of the optimization operation is as follows:

[0020] (1) When the data transmission success rate is lower than the threshold, the control center adjusts the retransmission mechanism according to the packet loss situation of different data types. When the packet loss rate of safety-class data is relatively high, shorten its retransmission interval and increase the data redundancy for each retransmission. The redundancy increase ratio is If the packet loss rate of traffic-class data is relatively high, while adjusting the retransmission interval, optimize its data scheduling priority to make it more advantageous in network resource allocation;

[0021] (2) When the average transmission delay is higher than the threshold, optimize the data transmission path according to the vehicle acceleration and network conditions. For vehicles with relatively large acceleration and weak network signals, preferentially allocate the opportunity to communicate with roadside units with stronger signals nearby, reduce the number of transmission hops, and reduce the delay;

[0022] (3) If the packet loss rate is higher than the threshold, the 5G base station dynamically adjusts the bandwidth allocation according to the network load. When the network load L is less than 0.8, appropriately reduce the bandwidth of entertainment-class data and increase the bandwidth of safety-class data and traffic-class data. The adjustment ratio is that the bandwidth of entertainment-class data is reduced The increased bandwidth of safety-class data and traffic-class data is allocated in a ratio of 3:2. When the network load L is greater than or equal to 0.8, in addition to reducing the bandwidth of entertainment-class data, restrict the transmission of newly accessed entertainment-class data, and give priority to ensuring the transmission of safety-class and traffic-class data.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention makes full use of the characteristics of the 5G network, closely combines vehicle acceleration and the real-time network environment, precisely adjusts the communication strategy for different priority data, and gives priority to ensuring the transmission of safety-related data in complex scenarios of sharp vehicle acceleration and deceleration, greatly improving the data transmission efficiency and reliability, and building a solid defense line for driving safety;

[0025] 2. The present invention optimizes the data transmission path and improves the network resource utilization rate through the cooperative communication between the vehicle and the roadside unit and the 5G base station as well as the intelligent allocation of resources. When the network load is high, the bandwidth is reasonably allocated according to the data priority, effectively reducing the data transmission delay and packet loss rate, and providing stable and efficient communication support for various applications of the vehicle network;

[0026] 3. The communication effect evaluation and feedback optimization mechanism established by the present invention enables the system to continuously optimize according to the actual communication situation of different types of data. This self-adaptability ensures that the vehicle network communication can achieve differentiated services in various traffic scenarios and network environments, improving the overall communication performance and user experience. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] A communication transmission control method for a 5G-based vehicle network includes a vehicle terminal, an information processing terminal, a roadside unit, a 5G base station, a core network, and a control center. The vehicle terminal is equipped with a 5G communication module and a sensor group, and the roadside units are distributed along the road and connected to the 5G base station.

[0030] Vehicle terminal: It is a basic component directly related to the vehicle in the vehicle network. The 5G communication module and sensor group it is equipped with play a crucial role.

[0031] 5G communication module: Responsible for wireless communication with the outside world, realizing data transmission between the vehicle and the roadside unit and the 5G base station, and providing a key basis for communication strategy adjustment. According to the instructions of the control center or its own judgment of the network environment, dynamically adjusts the data transmission rate to ensure the transmission effect of different priority data.

[0032] Sensor group: Used to collect various types of information of the vehicle itself, providing basic data support for vehicle-to-roadside unit communication, path planning, and traffic management.

[0033] Information processing terminal: Comprehensively analyzes and processes the data collected by the vehicle terminal and the data received from other devices.

[0034] Roadside unit: An important bridge connecting vehicles and 5G base stations in the vehicle-to-everything (V2X) network. Distributed along the road, it can communicate with vehicle terminals within a certain range, collect the data uploaded by vehicles, summarize and preliminarily process the collected vehicle data, and then forward it to the connected 5G base station to achieve the transmission of vehicle data to the core part of the network. At the same time, it receives traffic information, control instructions, etc. sent by the 5G base station and transmits them to nearby vehicle terminals, enabling vehicles to obtain external information in a timely manner and make corresponding adjustments.

[0035] 5G base station: Receives the vehicle data uploaded by the roadside unit and, through its connection with the core network, transmits the data to the core network for further processing and distribution. Manages the signals of vehicle terminals and roadside units within its coverage area.

[0036] Core network: The core hub of vehicle-to-everything (V2X) communication, responsible for centralized processing, storage, and distribution of data. Receives a large amount of vehicle data uploaded by 5G base stations, deeply analyzes and processes this data, and extracts valuable information.

[0037] Control center: The brain of vehicle-to-everything (V2X) communication transmission control, responsible for monitoring, managing, and optimizing the entire system.

[0038] As shown in the Figure 1 communication transmission control method of a 5G-based vehicle-to-everything (V2X) network shown below, the specific steps are as follows:

[0039] S1. Information collection step: During the driving process of the vehicle, the on-vehicle sensor group is used to collect the vehicle's own information in real time, and the vehicle terminal monitors the environmental information through the 5G communication module.

[0040] In this embodiment, specifically, it should be noted that: the vehicle's own information includes acceleration a, and the environmental information includes network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B; among them, the acceleration is collected by the acceleration sensor; the network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B are obtained by parsing relevant signaling from the 5G network through the 5G communication module.

[0041] S2. Priority confirmation step: The information processing terminal determines the priority of data transmission according to the collected information and application requirements.

[0042] In this embodiment, it should be specifically noted that the specific method for determining the priority of data transmission is as follows: The vehicle networking data is subdivided into safety - class data P s , traffic - class data P t , and entertainment - class data P e , and P s = 3 > P t = 2 > P e = 1. Among them, the safety - class data includes vehicle emergency braking signals, early warning of collision with the vehicle ahead, and road obstacle detection information. When the acceleration a of the vehicle is less than the emergency braking acceleration threshold of - 5m / s during braking, the vehicle emergency braking signal is triggered; when the relative speed V r and relative distance D r satisfy and V r > 0, the early warning of collision with the vehicle ahead is triggered; the road obstacle detection information is uploaded by on - vehicle sensors; the traffic - class data includes real - time traffic congestion information and traffic signal light status, both of which are obtained and transmitted by roadside units; the entertainment - class data includes online music and video playback.

[0043] S3. Dynamic communication strategy adjustment step: According to the collected data, for data with different priorities, the communication strategy is dynamically adjusted through an information processing terminal, including the transmission rate and the re - transmission mechanism.

[0044] In this embodiment, it should be specifically noted that the adjustment of the transmission rate is as follows: Considering the network signal strength S, signal - to - interference - plus - noise ratio SINR, and available bandwidth B comprehensively, when S >= 140dBm and SINR >= 0dB, first calculate the theoretical transmission rate and the absolute value of the acceleration |a| > 2m / s 2 , when the signal strength S <= - 105dBm, then adjust the transmission rate; adjust the transmission rate of safety - class data Adjust the transmission rate of traffic - class data Adjust the transmission rate of entertainment - class data The adjustment of the re - transmission mechanism is as follows: Set the timeout time T def = 0.5s for waiting for confirmation of data transmission. If no confirmation message is received within T def , it is determined that the transmission fails and needs to be re - transmitted;

[0045] (1) When the absolute value of the acceleration |a| <= 2m / s 2 , for safety - class data, re - transmit immediately, and the maximum number of re - transmission times is 3 times; for traffic - class data, the first re - transmission time interval T r1 = T def， ×1.5. If it fails again, the re - transmission time interval T r2 = T r1×2 and the maximum number of retransmissions is 2 times; for entertainment data, the first retransmission time interval T e1 = T def ×2, if it fails again, the retransmission time interval T e2 = T e1 ×2 and the maximum number of retransmissions is 2 times;

[0046] (2) When the absolute value of acceleration |a| > 2 m / s 2 , for safety - related data, retransmit immediately with an upper limit of 3 times. If the acceleration remains large and the network signal strength S < - 105 dBm, then increase the redundancy ratio of the retransmitted data For traffic - related data, the first retransmission time interval If it fails again, the retransmission time interval T r2 = T r1 ×2 and the maximum number of retransmissions is 2 times; for entertainment data, the first retransmission interval If it fails again, the retransmission time interval T e2 = T e1 ×2 and the maximum number of retransmissions is 2 times.

[0047] S4. Resource allocation step: The vehicle terminal interacts data with the roadside unit according to the adjusted policy, and the roadside unit collects data of surrounding vehicles and forwards it to the 5G base station, and the 5G base station then transmits the data to the core network for resource allocation.

[0048] In this embodiment, specifically, it should be noted that: The specific method of resource allocation is as follows: The information processing terminal first calculates the network load where B i is the bandwidth occupancy of the vehicles using network resources currently, B total is the total bandwidth of the 5G base station. The 5G base station then dynamically allocates resources according to the network load; when L < 0.8, give priority to ensuring the bandwidth of safety - related data and reduce the bandwidth allocation of entertainment data. The bandwidth adjustment ratio is: safety - related data increases Entertainment data decreases When L ≥ 0.8, the bandwidth of traffic - related data is also appropriately reduced, and the reduction ratio is The reduced bandwidth is preferentially allocated to safety - related data.

[0049] S5. Communication effect evaluation step: The control center collects the data information fed back by the vehicle terminal, the roadside unit and the 5G base station, and evaluates the communication effect through the information processing terminal.

[0050] In this embodiment, specifically, it should be noted that: The evaluation of the communication effect includes the data transmission success rate Average transmission delay And packet loss rate where P iRepresents the priority of the i-th type of data, N i-s Represents the amount of successfully transmitted data of the i-th type of data, N i-t Represents the total transmission volume of the i-th type of data, m represents the number of categories and is 3; T j Represents the latency of the j-th data transmission, a j Represents the acceleration of the vehicle during the j-th transmission, S j Represents the network signal strength during the j-th transmission, SINR j Represents the signal-to-interference-plus-noise ratio during the j-th transmission, S0 and SINR0 respectively represent the signal strength threshold and the signal-to-interference-plus-noise ratio threshold, n represents the total number of data transmissions; P k Represents the priority of the k-th type of data, N k-l Represents the amount of lost data of the k-th type of data, N k-t Represents the total transmission volume of the k-th type of data, m represents the number of categories and is 3.

[0051] S6. Feedback optimization step: The control center establishes corresponding data thresholds and performs optimization operations in combination with the evaluation results.

[0052] 9. In this embodiment, specifically, it should be noted that: The specific manner of the optimization operation is:

[0053] (1) When the data transmission success rate is lower than the threshold, the control center adjusts the retransmission mechanism according to the packet loss situation of different data types. When the packet loss rate of safety-class data is relatively high, shorten its retransmission interval and increase the data redundancy for each retransmission. The redundancy increase ratio is If the packet loss rate of traffic-class data is relatively high, while adjusting the retransmission interval, optimize its data scheduling priority to make it more advantageous in network resource allocation;

[0054] (2) When the average transmission latency is higher than the threshold, optimize the data transmission path according to the vehicle acceleration and network conditions. For vehicles with relatively large acceleration and weak network signals, preferentially allocate the opportunity to communicate with nearby roadside units with stronger signals to reduce the number of transmission hops and lower the latency;

[0055] (3) If the packet loss rate is higher than the threshold, the 5G base station dynamically adjusts the bandwidth allocation according to the network load. When the network load L is less than 0.8, appropriately reduce the bandwidth of entertainment-class data and increase the bandwidth of safety-class data and traffic-class data. The adjustment ratio is that the bandwidth of entertainment-class data is reduced The increased bandwidth of safety-class data and traffic-class data is allocated in a ratio of 3:2. When the network load L is greater than or equal to 0.8, in addition to reducing the bandwidth of entertainment-class data, restrict the transmission of newly accessed entertainment-class data and preferentially ensure the transmission of safety-class and traffic-class data.

[0056] Secondly: In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0057] Finally: The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A communication transmission control method for a vehicle networking based on 5G, characterized in that, It includes a vehicle terminal, an information processing terminal, a roadside unit, a 5G base station, a core network, and a control center. The vehicle terminal is equipped with a 5G communication module and a sensor group. The roadside units are distributed along the road and connected to the 5G base station. The specific steps are as follows: S1. Information collection step: During the driving process of the vehicle, the on-vehicle sensor group is used to collect the vehicle's own information in real time, and the vehicle terminal monitors the environmental information through the 5G communication module; The vehicle's own information includes acceleration a, and the environmental information includes network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B. Among them, the acceleration is collected by an acceleration sensor; the network signal strength S, signal-to-interference-plus-noise ratio SINR, and available bandwidth B are obtained by parsing relevant signaling from the 5G network by the 5G communication module; S2. Priority confirmation step: The information processing terminal determines the priority of data transmission according to the collected information and application requirements; The specific method for determining the priority of data transmission is as follows: The vehicle network data is subdivided into safety data P s , traffic data P t , and entertainment data P e , and P s = 3 > P t = 2 > P e = 1. Among them, the safety data includes the vehicle's emergency braking signal, the collision warning of the vehicle ahead, and the road obstacle detection information. When the acceleration a of the vehicle during braking is less than the emergency braking acceleration threshold of -5 m / s², the vehicle's emergency braking signal is triggered; when the relative speed V r and the relative distance D r satisfy and V r > 0, the collision warning of the vehicle ahead is triggered; the road obstacle detection information is uploaded by in-vehicle sensors; the traffic data includes real-time traffic congestion information and traffic signal status, both of which are obtained by roadside units; the entertainment data includes online music and video playback; S3. Dynamic communication strategy adjustment step: According to the collected data, for different priority data, the information processing terminal dynamically adjusts the communication strategy, including transmission rate and retransmission mechanism; The adjustment of the transmission rate is as follows: comprehensively considering the network signal strength S, the signal-to-interference-plus-noise ratio SINR, and the available bandwidth B, when S >= 140 dBm and SINR >= 0 dB, first calculate the theoretical transmission rate and the absolute value of the acceleration |a| > 2 m / s 2 , when the signal strength S <= -105 dBm, then adjust the transmission rate; adjust the transmission rate of safety-related data Adjust the transmission rate of traffic-related data Adjust the transmission rate of entertainment-related data The adjustment of the retransmission mechanism is as follows: Set the timeout period T for waiting for confirmation of data transmission def = 0.5 s. If no confirmation message is received within T def , it is determined that the transmission fails and retransmission is required; (1) When the absolute value of acceleration |a| ≤ 2 m / s² 2 , immediately re - transmit the safety - related data, and the maximum number of re - transmissions is 3 times; for traffic - related data, the first re - transmission time interval T r1 = T def， ×1.

5. If it fails again, the re - transmission time interval T r2 = T r1 ×2 and the maximum number of re - transmissions is 2 times; for entertainment - related data, the first re - transmission time interval T e1 = T def ×2. If it fails again, the re - transmission time interval T e2 = T e1 ×2 and the maximum number of re - transmissions is 2 times; (2) When the absolute value of acceleration |a| > 2 m / s 2 For safety - related data, re - transmit immediately and the upper limit is 3 times. If the acceleration remains large and the network signal strength S < - 105 dBm, increase the redundancy ratio of the re - transmitted data For traffic - related data, the first re - transmission time interval If it fails again, the re - transmission time interval T r2 = T r1 × 2 and the maximum number of re - transmissions is 2 times; for entertainment - related data, the first re - transmission interval If it fails again, the re - transmission time interval T e2 = T e1 × 2 and the maximum number of re - transmissions is 2 times; S4. Resource allocation step: The vehicle terminal exchanges data with the roadside unit according to the adjusted strategy, and the roadside unit collects the data of surrounding vehicles and forwards it to the 5G base station, and the 5G base station then transmits the data to the core network for resource allocation; The specific method of resource allocation is as follows: The information processing terminal first calculates the network load where B i is the bandwidth occupancy of the vehicles using network resources currently, and B total is the total bandwidth of the 5G base station. The 5G base station then dynamically allocates resources according to the network load; when L < 0.8, the bandwidth for safety-related data is preferentially guaranteed, and the bandwidth allocation for entertainment-related data is reduced. The bandwidth adjustment ratio is: the safety-related data increases and the entertainment-related data decreases When L ≥ 0.8, the bandwidth for traffic-related data is also appropriately reduced, and the reduction ratio is The reduced bandwidth is preferentially allocated to safety-related data; S5. Communication effect evaluation step: The control center collects the data information fed back by the vehicle terminal, roadside unit, and 5G base station, and evaluates the communication effect through the information processing terminal; S6. Feedback optimization step: The control center establishes corresponding data thresholds and performs optimization operations in combination with the evaluation results.

2. The communication transmission control method of a vehicle networking based on 5G according to claim 1, wherein: The described communication effect evaluation includes the data transmission success rate average transmission delay and packet loss rate Among them, P i represents the priority of the i-th type of data, N i-s represents the amount of successfully transmitted data of the i-th type of data, N i-t represents the total amount of transmitted data of the i-th type of data, m represents the number of categories and is 3; T j represents the delay time of the j-th data transmission, a j represents the acceleration of the vehicle during the j-th transmission, S j represents the network signal strength during the j-th transmission, SINR j represents the signal-to-interference-plus-noise ratio during the j-th transmission, S0 and SINR0 respectively represent the signal strength threshold and the signal-to-interference-plus-noise ratio threshold, n represents the total number of data transmissions; P k represents the priority of the k-th type of data, N k-l represents the amount of lost data of the k-th type of data, N k-t represents the total amount of transmitted data of the k-th type of data, m represents the number of categories and is 3.

3. A communication transmission control method for a vehicle networking based on 5G according to claim 1, wherein: The specific method of the optimization operation is as follows: (1) When the data transmission success rate is lower than the threshold, the control center adjusts the retransmission mechanism according to the packet loss situation of different data types. When the packet loss rate of security - related data is high, shorten its retransmission interval and increase the data redundancy for each retransmission. The proportion of the increased redundancy is If the packet loss rate of traffic - related data is high, while adjusting the retransmission interval, optimize its data scheduling priority to make it more advantageous in network resource allocation; (2) When the average transmission delay is higher than the threshold, optimize the data transmission path according to the vehicle acceleration and network conditions. For vehicles with large acceleration and weak network signals, give priority to allocating the opportunity to communicate with nearby roadside units with stronger signals, reduce the number of transmission hops, and reduce the delay; (3) If the packet loss rate is higher than the threshold, the 5G base station dynamically adjusts the bandwidth allocation according to the network load. When the network load L is less than 0.8, the bandwidth for entertainment data is appropriately reduced, and the bandwidth for security data and traffic data is increased. The adjustment ratio is that the bandwidth for entertainment data is reduced The increased bandwidth for security data and traffic data is allocated in a ratio of 3:

2. When the network load L is greater than or equal to 0.8, in addition to reducing the bandwidth for entertainment data, the transmission of newly accessed entertainment data is also restricted to give priority to ensuring the transmission of security data and traffic data.

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