Wireless gateway protocol optimization method, electronic device and storage medium

Abstract

The present invention discloses a wireless gateway protocol optimization method, an electronic device and a storage medium. The method comprises: LTE-V2X point-to-point communication; LTE-V2X packet loss retransmission; LTE-V2X RSU relay forwarding without a designated receiver; determining a designated receiver, obtaining a transmission distance for communicating with the designated receiver according to the LTE-V2X RSU relay forwarding without a designated receiver, and performing LTE-V2X RSU relay forwarding of the designated receiver; LTE-V2X RSU forwarding and packet loss retransmission. The present invention can intuitively reflect the significant communication performance improvement brought by the retransmission protocol and the forwarding protocol through parameters. The design of the present invention can also improve the communication reliability of the LTE-V2X direct link in the absence of GNSS synchronization; supporting a point-to-point forwarding protocol, which can greatly reduce the communication loss caused by building shielding; combining the retransmission protocol and the transfer protocol method to improve the communication reliability and increase the communication distance.

Description

Technical Field

[0001] The present invention relates to the fields of traffic control technology and vehicle networking technology, and in particular to a wireless gateway protocol optimization method, electronic equipment and storage medium. Background Art

[0002] As a key area of ​​future transportation innovation and a core technology of intelligent transportation systems, C-V2X (Cellular-V2X) technology is a V2X wireless communication technology based on cellular mobile communication systems. It will achieve connections between vehicles, people, infrastructure, and wireless networks. It combines artificial intelligence, image recognition, Beidou precise positioning and other high-tech technologies to solve the current intelligent transportation system's needs in vehicle driving safety, efficiency improvement, and information services, and provide guarantees for its smooth transition to autonomous driving and unmanned driving systems. V2X technology is already relatively mature in the field of urban transportation, and has also been proven to be feasible in rail transportation.

[0003] The existing design of C-V2X gateway has the problems of single communication mode, supporting only broadcast communication mode, limited communication distance and low communication robustness in LTE-V2X (wireless communication technology for vehicle-to-vehicle networks based on the evolution of mobile communication technology) mode. Summary of the invention

[0004] The purpose of the present invention is to provide a wireless gateway protocol optimization method, an electronic device and a storage medium, aiming to solve the problems of the existing design of C-V2X gateway, such as a single communication mode, supporting only broadcast communication mode, limited communication distance in LTE-V2X mode and low communication robustness.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In one aspect, the present invention provides a wireless gateway protocol optimization method, comprising:

[0007] By adding message types, LTE-V2X point-to-point communication is realized;

[0008] According to the point-to-point communication, LTE-V2X packet loss retransmission is designed to resend data after packet loss is detected, and the data is repeatedly executed to ensure communication performance;

[0009] Perform relay forwarding of LTE-V2XRSU without a designated receiver;

[0010] Determine a designated receiver, obtain a transmission distance for communicating with the designated receiver according to the relay forwarding of the LTE-V2XRSU without a designated receiver, and perform relay forwarding of the LTE-V2XRSU designated receiver;

[0011] When there is obstacle obstruction or GNSS synchronization fails, LTE-V2X RSU forwarding and packet loss retransmission are performed.

[0012] Preferably, the step of LTE-V2X point-to-point communication includes:

[0013] The sending end sends a number of data packets to the receiving end at fixed intervals, and the receiving end counts the number of received packets and sends a feedback data packet after receiving each of the data packets;

[0014] The transmitting end counts the delay according to the packet sending time and the packet receiving time of the feedback data packet, and the receiving end counts the packet loss rate to avoid time synchronization problems between devices;

[0015] Statistics are collected on the data sent and received.

[0016] Preferably, the LTE-V2X packet loss retransmission step includes:

[0017] The sender marks data packets with different contents with different IDs and sends them to the receiver;

[0018] The receiving end depackets the data packet after receiving it, obtains the ID information of the data packet, sends the ID information of the data packet to a feedback data packet, and the feedback data packet sends feedback to the sending end;

[0019] The transmitting end parses the feedback data packet and determines whether the packet is lost or retransmitted.

[0020] Preferably, the step of the transmitting end parsing the feedback data packet and determining packet loss and retransmission includes:

[0021] If the sending end does not receive the feedback data packet within a limited time, it is determined that the receiving end has failed to receive the data packet, and a data packet with the same ID information and the same content is sent to the receiving end again;

[0022] If the sending end receives the feedback data packet within a limited time, the sending end receives and analyzes the feedback data packet,

[0023] Compare the ID information in the feedback data packet with the ID information of the sent data packet, and if the ID information is the same, send a data packet with new content and a new ID;

[0024] If the ID information is not the same, a data packet with the same ID information and the same content is sent to the receiving end again.

[0025] Preferably, the step of relaying and forwarding without a designated receiver of the LTE-V2XRSU comprises:

[0026] Any terminal within a specified range broadcasts its position and speed information in real time;

[0027] After receiving the position and speed information, the LTE-V2X RSU processes and broadcasts the position and speed information of all terminals within the defined range to provide the information to all terminals within the defined range.

[0028] Preferably, the defined range is: assuming that the maximum reliable communication distance of the LTE-V2X is R, an area is defined with any one of the LTE-V2XRSUs as the center and R as the radius.

[0029] Preferably, any terminal within a defined range broadcasts its position and speed information in real time, wherein the position and speed information broadcasted in real time by any terminal has a first specific identifier so as to be received only by the LTE-V2XRSU.

[0030] Preferably, after receiving the position and speed information, the LTE-V2XRSU processes and broadcasts the position and speed information of all terminals within the defined range, wherein the position and speed information of all terminals broadcast by the LTE-V2XRSU has a second specific identifier for reception by the terminals within the defined range.

[0031] Preferably, the step of relaying and forwarding of the designated receiver by the LTE-V2XRSU includes:

[0032] Specify a receiver, and obtain a transmission distance for communicating with the specified receiver according to the relay forwarding of the LTE-V2XRSU without the specified receiver;

[0033] According to the fixed operation route map of the vehicle, the blocked section or the existing curve between the transmitting and receiving ends of the relay forwarding of the designated receiver of the LTE-V2XRSU is determined.

[0034] Preferably, the step of relaying and forwarding the designated receiver by the LTE-V2XRSU further includes: determining whether transfer is required,

[0035] If the transmission distance of the communication is greater than the maximum receiving threshold of LTE-V2X, a message with a forwarding flag that requires other nodes to forward is directly sent; if the transmission distance of the communication is less than or equal to the maximum receiving threshold of LTE-V2X, it is determined whether the sending and receiving ends are straight line segments according to the operation route diagram.

[0036] If it is a straight line segment, the communication is short-distance and unobstructed, and a message with an identifier that does not require other nodes to forward is sent to the designated recipient.

[0037] If it is not a straight line segment, the transmission distance of the communication is short but there are obstructions, and a message with an identifier that needs to be forwarded by other nodes is sent.

[0038] Preferably, the other nodes are determined based on the fixed operating route map of the vehicle and the vehicle position.

[0039] Preferably, when it is determined that there is an obstacle, another LTE-V2XRSU is set at the location where the obstacle blocks communication, and the LTE-V2XRSU relays and forwards to avoid the obstacle blocking communication.

[0040] Preferably, the step of LTE-V2XRSU forwarding is the same as the step of LTE-V2XRSU relay forwarding.

[0041] Preferably, the LTE-V2XRSU packet loss retransmission step includes:

[0042] Different ID information is encapsulated according to the content of the data packet, and any data packet sent by the sender is sent to the receiver;

[0043] The receiving end depackets the data packet after receiving it, obtains the ID information of the data packet, sends the ID information of the data packet to a feedback data packet, and the feedback data packet sends feedback to the sending end;

[0044] The transmitting end parses the feedback data packet and determines whether the RSU packet is lost and retransmitted.

[0045] Preferably, the step of determining RSU packet loss retransmission includes:

[0046] Compare the ID information in the feedback data packet with the ID information of the sent data packet,

[0047] If the ID information is the same, a data packet with new content and new ID is sent;

[0048] If the ID information is not the same, a data packet with the same ID information and the same content is sent to the receiving end again.

[0049] On the other hand, the present invention further provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the wireless gateway protocol optimization method described above is implemented.

[0050] A readable storage medium stores a computer program, and when the computer program is executed by a processor, the wireless gateway protocol optimization method described above is implemented.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. The present invention realizes point-to-point communication by adding message types. On this basis, a forwarding protocol and a feedback-based retransmission protocol are further designed, and the packet loss rate and delay of the LTE-V2X direct link are calculated at the same time. The parameters can intuitively reflect the significant communication performance improvement brought by the retransmission protocol and the forwarding protocol;

[0053] 2. The feedback-based retransmission protocol designed by the present invention can improve the communication reliability of the LTE-V2X direct link even in the absence of GNSS synchronization;

[0054] 3. The present invention supports point-to-point forwarding protocol, which can significantly reduce the communication loss caused by building obstruction;

[0055] 4. The method of combining the retransmission protocol and the relay protocol of the present invention not only improves the reliability of communication, but also increases the communication distance;

[0056] 5. The resource scheduling method of the present invention is distributed scheduling, which can be completed without a base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are an embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0058] Figure 1 A schematic diagram of an LTE-V2X point-to-point communication mode provided by an embodiment of the present invention;

[0059] Figure 2 A flow chart of a LTE-V2X packet loss retransmission mode provided by an embodiment of the present invention;

[0060] Figure 3 A schematic diagram of LTE-V2XRSU transfer without a designated receiver provided in an embodiment of the present invention;

[0061] Figure 4 A flowchart of the LTE-V2XRSU designated receiver transfer determination provided by an embodiment of the present invention;

[0062] Figure 5 A schematic diagram of LTE-V2XRSU designated receiver transfer judgment provided by an embodiment of the present invention;

[0063] Figure 6 A schematic diagram of the LTE-V2X RSU forwarding and packet loss retransmission mode provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] The following is combined with Figure 1 and Figure 6 The wireless gateway protocol optimization method, electronic device and storage medium proposed in the present invention are further described in detail with specific implementation methods. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation methods of the present invention. In order to make the purposes, features and advantages of the present invention more obvious and easy to understand, please refer to the drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by the present invention and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0065] In view of the existing design of C-V2X gateway, there are problems such as single communication mode, only supporting broadcast communication mode, limited communication distance and low robustness of communication under LTE-V2X (wireless communication technology for Internet of Vehicles formed based on the evolution of mobile communication technology) mode, multiple optimization protocols have been developed based on the traditional LTE-V2X protocol:

[0066] On the one hand, this embodiment provides a wireless gateway protocol optimization method, including:

[0067] Step S1: By adding message types, point-to-point communication can be achieved.

[0068] The specific steps of LTE-V2X point-to-point communication include:

[0069] Step S1.1: Send data packet, as attached Figure 1 As shown, first, the sending terminal sends 200 data packets at an interval of 100ms, and the receiving end counts the number of received packets and sends a feedback packet each time it receives a packet.

[0070] Step S1.2: Feedback data packets. The sending end counts the delay according to the packet sending time and the feedback packet receiving time, and the receiving end counts the packet loss rate. By counting the delay at the sending end, time synchronization problems between devices can be avoided.

[0071] Step S1.3: Count the sending and receiving of statistical data packets. In this process, whether to resend the data is not determined based on the packet loss rate. Only a single sending, receiving and statistical operation is performed.

[0072] Step S2: Based on the point-to-point communication, LTE-V2X packet loss retransmission is designed to resend data after packet loss is detected, and the operation is repeated multiple times to ensure communication performance.

[0073] The specific steps of LTE-V2X packet loss retransmission include:

[0074] In the absence of GNSS synchronization, LTE-V2X communication is easily affected by environmental changes. Consider adding a detection mechanism for severe packet loss: Figure 2 As shown, it includes three parts: sending, feedback and judgment of retransmission.

[0075] Step S2.1: Sending data packets, the sending end marks data packets with different contents with different IDs and sends them to the receiving end;

[0076] Step S2.2: receiving and feedback. After receiving the data packet, the receiving end unpacks it and compares whether the ID of the newly received data packet is the same as the historical packet ID. If they are the same, this data packet is not counted and the received ID information is assigned to the feedback data packet to be sent and sent to the sending end.

[0077] Step S2.3: Determine retransmission. The sender receives and parses the feedback packet, compares the ID of the feedback packet with the data packet it has sent, and if they are the same, sends a data packet with new content and a new ID. If they are not the same or no feedback packet is received for more than 100ms, it is determined by default that the receiving end has failed to receive the packet, and the data packet with the same ID and content is sent again.

[0078] This judgment process takes 100ms as an interval. If a packet is lost, it will be retransmitted. Each data packet with the same content can be retransmitted 3 times. If all three retransmissions fail, a new data packet will be automatically sent until all messages are sent successfully.

[0079] Step S3: LTE-V2X RSU relays without a designated receiver.

[0080] As attached Figure 3 As shown, assuming that the current maximum reliable communication distance of LTE-V2X is R, a cell is defined: with any of the LTE-V2X RSUs as the center and R as the radius.

[0081] Step S3.1: The terminal broadcasts driving information. All terminals within this cell range need to broadcast their own location, speed and other information in real time. Such messages carry a first specific identifier V (vehicle) and are only received by the LTE-V2X RSU.

[0082] Step S3.2: LTE-V2X RSU forwards information. After receiving the position and speed information sent by each vehicle in this cell, the LTE-V2X RSU needs to process and broadcast it immediately. This type of message carries a second specific identifier R (RSU) and is only received by vehicles in this cell.

[0083] The forwarding service ensures that all vehicles in the cell can obtain the position and speed information of other vehicles in real time.

[0084] Step S4: Determine a designated receiver, obtain the transmission distance for communicating with the designated receiver according to the relay forwarding of the LTE-V2XRSU without a designated receiver, and perform relay forwarding of the LTE-V2XRSU designated receiver.

[0085] After the terminal is equipped on the vehicle, it is necessary to obtain the position and speed of the front and rear vehicles in real time. In general, it only needs to communicate directly with the front and rear vehicles. In this scenario, the recipient of the message is first determined, and then the transmission distance of this communication can be obtained based on the forwarding protocol without a designated recipient. Then, based on the fixed train route map, it can be determined whether the section between the sending and receiving ends is a straight line without obstructions or there are curves. According to the characteristics of urban rail transit lines, if the section between the sending and receiving ends is a non-straight section, there is a high probability that there will be obstructions that will cause a certain degree of attenuation to this communication.

[0086] Step S4.1: Determine whether transfer is required, such as Figure 4 As shown, the transmission distance of this communication is determined according to the positions of the receiving parties. If the communication transmission distance is greater than the maximum receiving threshold of LTE-V2X, a message with an identifier that requires forwarding by other nodes is directly sent, and the specific forwarding node needs to be determined in combination with the operation route map and the train position; if the transmission distance is less than or equal to the maximum receiving threshold, the operation route map is used to determine whether the sending and receiving ends are straight sections. If it is a straight section, it means that this communication is short-distance and unobstructed, and a message with an identifier that does not require forwarding by other nodes is directly sent. Otherwise, it means that although the transmission distance is short, there is a large turn (there are obstructions), and a message with an identifier that requires forwarding by other nodes is sent. The specific forwarding node also needs to be determined in combination with the operation route map and the train position.

[0087] Step S4.2: LTE-V2XRSU transfer equipment conditions: In order to reduce the communication loss caused by building occlusion, add a forwarding unit LTE-V2XRSU for forwarding at the corner where the communication is blocked. Figure 5 As shown, this embodiment involves three terminals ABC, among which A is a sending terminal, B is an RSU transit, and C is a receiving terminal. The communication environment between B and the sending terminal A and the receiving terminal C is unobstructed, and obstacles that block communication can be avoided to ensure smooth communication.

[0088] Sending data packets: A broadcasts data packets of type 1. Only terminal B can receive data packets of type 1.

[0089] Forwarding the initial data packet: After receiving A's type 1 data packet, B parses the content and encapsulates it into a type 2 data packet and broadcasts it. Type 2 is only received by terminal C.

[0090] Receive data packet: After receiving the data packet, terminal C unpacks the content.

[0091] Since LTE-V2X is a broadcast communication, A, B, and C can all receive all types of messages within the communication range, but only B chooses to receive the content of type 1 data packet, and forwards type 1 through B. Only C chooses to receive the content of type 2 message, realizing the relay forwarding function.

[0092] Step 5: LTE-V2X RSU forwarding and packet loss retransmission:

[0093] In case of obstacle blocking and GNSS synchronization failure, LTE-V2XRSU performs packet loss monitoring and retransmission while forwarding, thus ensuring the communication quality of LTE-V2X to the greatest extent. Figure 6 As shown, this process of this embodiment involves three terminals ABC, where A is a sending terminal, B is an RSU transfer, and C is a receiving terminal. The communication environment between B and the sending terminal A and the receiving terminal C is unobstructed, and obstacles blocking the communication can be avoided to ensure smooth communication:

[0094] The steps of LTE-V2XRSU forwarding are the same as the steps of LTE-V2XRSU relay forwarding in step S4, and message forwarding is also successfully performed with the help of the message type.

[0095] The LTE-V2XRSU packet loss retransmission step includes:

[0096] Step S5.1: packet loss detection. Each data packet sent by terminal A is encapsulated with a different ID according to the packet content. During the forwarding process, the content and ID of the data packet forwarded by B remain unchanged.

[0097] Step S5.2: Packet receiving feedback: after receiving the data packet with ID 1, terminal C encapsulates the ID into a new data packet and broadcasts it. The type is 3, and only terminal B can receive it.

[0098] Step S5.3: forwarding feedback packet. After receiving the data packet of type 3, B parses the packet ID, encapsulates it into a data packet of type 4 and broadcasts it. The data packet of type 4 is only received by A.

[0099] Step S5.4: Determine retransmission. A receives a feedback packet of type 4 and makes a judgment. If the ID is the same as the data packet it has sent, it sends a data packet with new content. If no feedback packet is received for more than 200ms, it automatically determines that it has failed and resends a data packet with the same content and ID.

[0100] On the other hand, this embodiment further provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the wireless gateway protocol optimization method described above is implemented.

[0101] A readable storage medium stores a computer program, and when the computer program is executed by a processor, the wireless gateway protocol optimization method described above is implemented.

[0102] In summary, this embodiment breaks through the limitations of current LTE-V2X product communication, adds a variety of V2X optimization protocols, and greatly improves the communication distance, reliability, and robustness in the LTE-V2X communication mode. This embodiment can achieve point-to-point communication by adding message types. On this basis, a forwarding protocol and a feedback-based retransmission protocol can be further designed. At the same time, the packet loss rate and delay of the LTE-V2X direct link can be calculated, and the parameters can intuitively reflect the significant communication performance improvement brought by the retransmission protocol and the forwarding protocol. Due to the high requirements of LTE-V2X on the synchronization source, the short-distance communication packet loss rate can only reach 0% when GNSS synchronization is used. However, in fact, the reception of GNSS synchronization signals has extremely high requirements for the environment and weather. The feedback-based retransmission protocol designed in this embodiment can improve the communication reliability of the LTE-V2X direct link even in the absence of GNSS synchronization. This embodiment supports a point-to-point forwarding protocol, which can greatly reduce the communication loss caused by building occlusion. The method of combining the retransmission protocol and the relay protocol can not only improve the reliability of communication, but also increase the communication distance. The resource scheduling method is distributed scheduling, which can be completed without a base station.

[0103] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0104] It should be noted that the devices and methods disclosed in the embodiments of this article can also be implemented in other ways. The device implementation described above is only schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of this article. In this regard, each box in the flowchart or block diagram can represent a part of a module, program or code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical function, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented by a dedicated hardware-based system for performing a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0105] In addition, the functional modules in the various embodiments of this document may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0106] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A wireless gateway protocol optimization method, characterized in that: include: By adding a message type, LTE-V2X point-to-point communication is realized. The steps of the LTE-V2X point-to-point communication include: the transmitting end sends a number of data packets to the receiving end at a fixed interval, and the receiving end counts the number of received packets for each data packet received and sends a feedback data packet; the transmitting end counts the delay according to the packet sending time and the packet receiving time of the feedback data packet, and the receiving end counts the packet loss rate; and counts the data of the packet sending and receiving; According to the point-to-point communication, LTE-V2X packet loss retransmission is designed to resend data after packet loss is detected. The steps of LTE-V2X packet loss retransmission include: the transmitting end marks data packets with different contents as different IDs and sends them to the receiving end; the receiving end unpacks the data packets after receiving them, obtains the ID information of the data packets, sends the ID information of the data packets to the feedback data packets, and the feedback data packets send feedback to the transmitting end; the transmitting end parses the feedback data packets and determines the packet loss retransmission; Relay forwarding of LTE-V2X RSU without a designated receiver is performed, and the steps of relay forwarding of LTE-V2X RSU without a designated receiver include: any terminal within a defined range broadcasts its position and speed information in real time; after receiving the position and speed information, the LTE-V2X RSU processes and broadcasts the position and speed information of all terminals within the defined range to provide it to all terminals within the defined range; Determine a designated receiver, and obtain a transmission distance for communicating with the designated receiver according to the relay forwarding of the LTE-V2X RSU without the designated receiver; determine the obstruction section or the existing curve between the transmitting and receiving ends of the relay forwarding of the designated receiver of the LTE-V2X RSU according to the fixed operation route map of the vehicle; and perform the relay forwarding of the designated receiver of the LTE-V2X RSU; When there is obstacle obstruction or GNSS synchronization fails, LTE-V2X RSU forwarding and packet loss retransmission are performed.

2. The wireless gateway protocol optimization method according to claim 1, characterized in that: The step of the transmitting end parsing the feedback data packet and determining packet loss and retransmission includes: If the sending end does not receive the feedback data packet within a limited time, it is determined that the receiving end has failed to receive the data packet, and a data packet with the same ID information and the same content is sent to the receiving end again; If the sending end receives the feedback data packet within a limited time, the sending end receives and analyzes the feedback data packet, Compare the ID information in the feedback data packet with the ID information of the sent data packet, and if the ID information is the same, send a data packet with new content and a new ID; If the ID information is not the same, a data packet with the same ID information and the same content is sent to the receiving end again.

3. The wireless gateway protocol optimization method according to claim 2, characterized in that: The defined range is: assuming that the maximum reliable communication distance of the LTE-V2X is R, an area is defined with any of the LTE-V2X RSUs as the center and R as the radius.

4. The wireless gateway protocol optimization method according to claim 3, characterized in that: Any terminal within a defined range broadcasts its position and speed information in real time, wherein the position and speed information broadcasted in real time by any terminal has a first specific identifier so as to be received only by the LTE-V2X RSU.

5. The wireless gateway protocol optimization method according to claim 4, characterized in that: After receiving the position and speed information, the LTE-V2X RSU processes and broadcasts the position and speed information of all terminals within the defined range, wherein the position and speed information of all terminals broadcast by the LTE-V2X RSU has a second specific identifier for reception by the terminals within the defined range.

6. The wireless gateway protocol optimization method according to claim 1, characterized in that: The step of relaying and forwarding the designated receiver by the LTE-V2X RSU further includes: determining whether relaying is required, If the transmission distance of the communication is greater than the maximum receiving threshold of the LTE-V2X, a message with a forwarding flag that requires other nodes to forward is directly sent; if the transmission distance of the communication is less than or equal to the maximum receiving threshold of the LTE-V2X, it is determined whether the sending and receiving ends are straight line segments according to the operation route diagram. If it is a straight line segment, the communication is short-distance and unobstructed, and a message with an identifier that does not require other nodes to forward is sent to the designated recipient. If it is not a straight line segment, the transmission distance of the communication is short but there are obstructions, and a message with an identifier requiring other nodes to forward is sent.

7. The wireless gateway protocol optimization method according to claim 6, characterized in that: The other nodes are determined according to the fixed operation route map of the vehicle and the vehicle position.

8. The wireless gateway protocol optimization method according to claim 7, characterized in that: When it is determined that there is an obstacle, another LTE-V2X RSU is set at the location where the obstacle blocks communication, and the LTE-V2X RSU relays and forwards to avoid the obstacle blocking communication.

9. The wireless gateway protocol optimization method according to claim 8, characterized in that: The steps of the LTE-V2X RSU forwarding are the same as the steps of the LTE-V2X RSU relay forwarding.

10. The wireless gateway protocol optimization method according to claim 9, characterized in that: The LTE-V2X RSU packet loss retransmission step includes: Different ID information is encapsulated according to the content of the data packet, and any data packet sent by the sender is sent to the receiver; The receiving end depackets the data packet after receiving it, obtains the ID information of the data packet, sends the ID information of the data packet to a feedback data packet, and the feedback data packet sends feedback to the sending end; The transmitting end parses the feedback data packet and determines the LTE-V2X RSU packet loss and retransmission.

11. The wireless gateway protocol optimization method according to claim 10, characterized in that: The step of determining LTE-V2X RSU packet loss retransmission includes: Compare the ID information in the feedback data packet with the ID information of the sent data packet, If the ID information is the same, a data packet with new content and new ID is sent; If the ID information is not the same, a data packet with the same ID information and the same content is sent to the receiving end again.

12. An electronic device, characterized in that: The method comprises a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the method according to any one of claims 1 to 11 is implemented.

13. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

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