CN113162825B

CN113162825B - Internet of vehicles communication quality evaluation method, device and system and storage medium

Info

Publication number: CN113162825B
Application number: CN202110407102.5A
Authority: CN
Inventors: 邹博松; 王卉捷; 金有俊; 宋娟; 郭盈
Original assignee: China Software Evaluation Center
Current assignee: China Software Evaluation Center
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2022-08-26
Anticipated expiration: 2041-04-15
Also published as: CN113162825A

Abstract

The application provides a vehicle networking communication quality evaluation method and related equipment based on LTE-V2X PC5, including: generating a test configuration request message according to the test configuration information, and broadcasting the test configuration request message; under the condition of receiving a configuration confirmation message sent by the tested device, generating a request starting time message and sending the request starting time message to the tested device; after receiving a confirmation starting time message sent by the tested device, determining a first test starting time based on time delay information in the confirmation starting time message, wherein the confirmation starting time message is generated based on the request starting time message; and sending a first test data message to test the tested device based on the first test data message under the condition that the first test starting time is reached.

Description

Internet of vehicles communication quality evaluation method, device and system and storage medium

Technical Field

The application relates to the technical field of testing, in particular to a vehicle networking communication quality evaluation method based on LTE-V2X PC5 and related equipment.

Background

Intellectualization and networking are important development trends of the internet of vehicles. As a key supporting technology of automobile networking, the V2X (Vehicle to influencing) technology can realize Vehicle-Vehicle cooperation, Vehicle-road cooperation and Vehicle-Vehicle cooperation, all participating individuals on a road can be constructed into an information network through the V2X technology, the information interaction among the individuals can be met by the network, intelligent control in a cluster can also be realized, and road traffic becomes safer and more controllable. In recent years, the commercialization and popularization of the V2X technology are being promoted at home and abroad. Early car networking attempted to communicate via the WAVE-based DSRC standard, but due to the problems of high communication delay, low reliability, short communication distance and the like of the DSRC standard, the LTE-V2X standard was mainly pushed at home and abroad at present. The LTE-V2X-based direct communication (PC5) has the advantages of low time delay, large communication capacity, high spectrum utilization rate and the like. According to the resource allocation method of the PC5 port and different relation classification of cellular communication base stations, the resource scheduling mode of the LTE-V2X PC5 can be divided into two working modes, namely a working mode 3 and a working mode 4. The working mode 3 requires the base station to participate in the resource scheduling of the UE, and the UE in the working mode 4 can work in the environment without the base station, so as to avoid the signaling overhead of the base station scheduling. Currently, most terminals in China use the working mode 4.

In the existing LTE-V2X PC5 communication quality testing method, a unified testing method and standard for an LTE-V2X PC5 communication mechanism are lacked, and the problems that the test results of two terminal devices in the same place are difficult to reproduce are also existed. At present, the network layer protocol and the application layer protocol of LTE-V2X do not have a unified protocol for communication quality testing, terminals of respective manufacturers use respective proprietary test data formats for communication testing, and if terminals of different manufacturers need to test communication quality, at least one of the terminals needs to be developed for the second time to adapt to the test protocol of the other terminal, so that the test efficiency of the existing test method is low.

Disclosure of Invention

In order to solve the problems, the application provides an LTE-V2X PC 5-based vehicle networking communication quality evaluation method and related equipment.

The application provides a vehicle networking communication quality evaluation method based on LTE-V2X PC5, which comprises the following steps:

generating a test configuration request message according to the test configuration information, and broadcasting the test configuration request message;

under the condition that a confirmation configuration message sent by the tested device is received, generating a request starting time message, and sending the request starting time message to the tested device, wherein the confirmation configuration message is generated by the tested device based on the request testing configuration message;

after receiving a confirmation start time message sent by the device under test, determining a first test start time based on time delay information in the confirmation start time message, wherein the time delay information is determined by the device under test based on a first time of sending the confirmation start time message and a second time of receiving the request start time message, and the confirmation start time message is generated based on the request start time message;

and sending a first test data message to test the tested device based on the first test data message under the condition that the first test starting time is reached.

In some embodiments, the generating a request start time message and sending the request start time message to the device under test when receiving a configuration confirmation message sent by the device under test includes:

under the condition of receiving a confirmation configuration message sent by the tested device, determining the address information of the tested device based on the confirmation configuration message;

and generating a request starting time message based on the address information and the second test starting time, and sending the request starting time message to the tested device.

In some embodiments, the method further comprises:

under the condition that a test ending condition is met, sending a request ending test message to the tested device;

and under the condition that an end confirmation message sent by the tested device is received, ending the test, wherein the end confirmation message is generated based on the request end test message.

In some embodiments, the method further comprises:

receiving a second test data message sent by the device to be tested, wherein test packet information is recorded in an extended domain of the second test data message, and the second test data message is generated based on the test configuration information;

and testing the communication performance of the tested equipment based on the test packet information.

In some embodiments, each message is a dedicated short protocol, DSMP, message, the extended domain of which defines the test protocol.

The embodiment of the application further provides an evaluation method for the communication quality of the internet of vehicles based on LTE-V2X PC5, which is applied to a terminal to be tested and comprises the following steps:

under the condition of receiving a request test configuration message sent by test equipment, carrying out test configuration based on test configuration information in the request test configuration message, and sending a confirmation configuration message to the test equipment;

under the condition of receiving a request start time message sent by the test equipment, sending a determined start time message, wherein the request start time message comprises: a second test start time, the determination start time message including reception time delay information, the reception time delay information being determined based on a first time at which the determination start time message is transmitted and a second time at which the request start time message is received;

and under the condition that a second test starting time is reached, sending a second test data message based on the test configuration information so as to enable the test equipment to perform a test based on the second test data message.

In some embodiments, the method further comprises:

under the condition that a request end test message sent by the test equipment is received, stopping sending the second test data message;

and sending an end confirmation message to the test equipment to end the test.

The embodiment of the application provides a testing device, includes:

the first generating module is used for generating a test configuration request message according to the test configuration information and broadcasting the test configuration request message;

the second generating module is used for generating a request starting time message and sending the request starting time message to the tested device under the condition that a confirmation configuration message sent by the tested device is received, wherein the confirmation configuration message is generated by the tested device based on the request testing configuration message;

a first determining module, configured to determine a first test start time based on time delay information in a confirmation start time message after receiving the confirmation start time message sent by the device under test, where the time delay information is determined by the device under test based on a first time when the confirmation start time message is sent and a second time when the request start time message is received, and the confirmation start time message is generated based on the request start time message;

and the first testing module is used for sending a first testing data message under the condition that the first testing starting time is reached so as to test the tested equipment based on the first testing data message.

The embodiment of the application provides a vehicle networking communication quality evaluation system based on LTE-V2X PC5, which comprises a memory and a processor, wherein a computer program is stored on the memory, and when the computer program is executed by the processor, the vehicle networking communication quality evaluation system based on LTE-V2X PC5 is executed.

The embodiment of the application provides a storage medium, which stores a computer program, which can be executed by one or more processors, and can be used for implementing any one of the above methods for evaluating the communication quality of the internet of vehicles based on the LTE-V2X PC 5.

According to the LTE-V2X PC 5-based vehicle networking communication quality evaluation method and related equipment, the test equipment sends the request test configuration message to the tested equipment, the tested equipment sends the confirmation configuration message, the test equipment sends the request start time message to the tested equipment after receiving the confirmation configuration message, the tested equipment sends the confirmation start time message to the test equipment, and under the condition that the appointed time is reached, the test equipment and the tested equipment simultaneously send the test data message, so that the test equipment can automatically test the tested equipment, and the test efficiency is improved.

Drawings

The present application will be described in more detail below on the basis of embodiments and with reference to the accompanying drawings.

Fig. 1 is a schematic flow chart of an implementation of a vehicle networking communication quality evaluation method based on LTE-V2X PC5 according to an embodiment of the present application;

fig. 2 is a schematic flow chart illustrating an implementation process of the vehicle networking communication quality evaluation method based on LTE-V2X PC5 according to the embodiment of the present application;

fig. 3 is a schematic flowchart of a vehicle networking communication quality evaluation method based on LTE-V2X PC5 according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an LTE-V2X PC 5-based vehicle networking communication quality evaluation device provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a component of an LTE-V2X PC 5-based vehicle networking communication quality evaluation system according to an embodiment of the present application.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

The following description will be added if a similar description of "first \ second \ third" appears in the application file, and in the following description, the terms "first \ second \ third" merely distinguish similar objects and do not represent a specific ordering for the objects, and it should be understood that "first \ second \ third" may be interchanged under certain circumstances in a specific order or sequence, so that the embodiments of the application described herein can be implemented in an order other than that shown or described herein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.

Based on the problems in the related art, the embodiment of the application provides the vehicle networking communication quality evaluation method based on the LTE-V2X PC5, and the method is applied to test equipment which can be a computer, a mobile terminal, vehicle-mounted equipment and the like. The function realized by the vehicle networking communication quality evaluation method based on the LTE-V2X PC5 provided by the embodiment of the application can be realized by calling a program code by a processor of a test terminal, wherein the program code can be stored in a computer storage medium.

The embodiment of the application provides a vehicle networking communication quality evaluation method based on LTE-V2X PC5, and fig. 1 is a schematic flow chart of the implementation of the vehicle networking communication quality evaluation method based on LTE-V2X PC5, as shown in fig. 1, including:

step S101, generating a request test configuration message according to the test configuration information, and broadcasting the request test configuration message.

In the embodiment of the present application, the Request test configuration Message is a Dedicated Short Message Protocol (DSMP) Message, and the type of the DSM Message may be divided into a Trap Message and an Inform Request Message, where the Trap Message is used for a Message communicated during a test process, and a receiver does not need to reply after receiving the Message. The Inform Request message is used for service registration and cancellation before the test starts and after the test ends, and a receiver needs to reply. The Trap message is an unreliable protocol, the Inform Request message is a reliable protocol, the receipt is automatically retransmitted without receiving, and a communication test protocol is defined in the DSMP message and is positioned in an extended domain part of a header of the DSMP message. In the embodiment of the present application, the type of the Request test configuration message is an Inform Request message, table 1 is a schematic diagram of the structure of the DSMP message provided in the embodiment of the present application, as shown in table 1,

table 1 is a schematic diagram of a structure of a DSMP message provided in this embodiment

In the DSMP message, a first field has 3bits and is used for filling a DSMP version, a second field has 1bit and is used for filling a DSMP extended domain indication, a third field has 4bits and is used for reservation, a fourth field is an extended domain, a 5 field is filled with an application identifier, a sixth field is used for identifying the data length, and a seventh field is used for filling data. When the message requesting for testing configuration is generated, the DSMP version is automatically filled according to the specification, the indication of the DSMP extended domain is set to be 1, and the reserved parts are all filled with 0. In the embodiment of the present application, the format of the extended field portion is shown in table 2, as shown in table 2,

table 2 is a schematic structural table of an extended domain provided in this embodiment of the present application

The first field is used for specifying the number of the information elements, and the second field is used for specifying the information elements. In the embodiment of the present application, there may be one or more information elements. Each information element has a calculable length, and the structure of the information element frame is shown in table 3, as shown in table 3,

table 3 is a structural schematic table of a novel element frame provided in this embodiment of the present application

The first field in the information element frame is an element identifier, the second field is a length, and the third field is a content.

The test configuration information may be pre-stored on the test terminal. In some embodiments, the test configuration information may be test configuration information imported by a user when conducting a test.

The number and length of the information elements are variable length fields, the encoding method is shown in table 4, as shown in table 4, table 4 is a table of encoding methods for information elements provided in the embodiments of the present application

In the embodiment of the application, two information elements, namely Element IDs, are included, and the Element IDs are a communication performance test Trap message and a communication performance test Inform Request message respectively. The information element content of the Test data packet used for statistics in the communication process is defined to be in a DTMM format (Dsmp Test Running Message), and the information element content used for Control at the beginning and the end of the communication is defined to be in a DTCM format (Dsmp Test Control Mesasge).

The DTCM format is shown in table 5:

table 5 is a structural schematic table of DTCM format provided in this embodiment of the present application

In the embodiment of the application, when the test configuration is requested, the field one is filled, and when the test is requested to be finished, the field 2 is filled. And so on.

Where the configuration information is filled in when a test configuration of 1 is requested, see table 6,

table 6 is a schematic diagram of a configuration information structure provided in this embodiment of the present application

The configuration information includes: the method comprises the steps of testing a model, indicating a position field, testing a period index, testing the total number of test packets, testing the length of a DPU, testing aid and SPS configuration information. The location field indicates whether a location information record is included in the current test. The test period index indicates 12 common periods, i.e., 20ms, 50ms, 100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms, 900ms, 1000ms, from 0 to 11, respectively. The test PDU length indicates the data field length of the filling-in test DSMP packet. The test aid is the same as the aid filling rule of the DSMP header.

SPS configuration information format see table 7:

table 7 is a schematic table of SPS configuration information structure provided in this embodiment of the present application

The PPPP is a ProSe Priority Per Packet ranging from 1 to 8, and the reserved period index is the same as the test period index in the table above. The reserved bandwidth size and whether the bottom layer data packet is divided into packets.

The DTRM format is shown in table 8,

table 8 is a schematic structural table of a DTRM format provided in this embodiment of the present application

In the embodiment of the present application, the request test configuration may be filled in the field one in the DTCM format, and the configuration information is filled in the field seven, so as to generate a request test configuration message.

In the embodiment of the present application, after the test configuration request message is generated, the test device may broadcast the test configuration request message to send the test configuration request message to the device under test.

Step S102, under the condition that the configuration confirmation message sent by the tested device is received, a request starting time message is generated, and the request starting time message is sent to the tested device.

In the embodiment of the present application, the confirmation configuration message is a DSMP message, the type is an Inform Request message, and the confirmation configuration message is generated by the device under test based on the Request test configuration message. In the embodiment of the application, after receiving the test configuration request message, the device to be tested can analyze the test configuration request message to obtain the test configuration request and the test configuration information. And the tested device is configured based on the test configuration information. In this embodiment, the configuration information may include: test model, location field indication, test period index, total number of test packets, test DPU length, test aid, SPS configuration information, etc. The device under test may populate field three in the DTCM format to generate the confirm configuration message. After the tested device analyzes the request test configuration message, the registered service table can be checked, if the communication test application is registered, the network layer function of the tested device is configured according to the configuration information of the request test configuration message to the test case, and the confirmation configuration message is sent.

In the embodiment of the application, when the test equipment receives the confirmation configuration message, the confirmation configuration message is analyzed to obtain the information in the DTCM format field three, so as to determine whether the message is the confirmation configuration message, and determine the format of the request test configuration message.

In this embodiment of the present application, when the test device confirmation message is a confirmation configuration message, the test device can determine address information of the device under test, where the address information may be a mac address, fill in the request start time in field four in the DTCM format, fill in the test start time in field nine, and fill in the device under test address in field eight, thereby generating a request start time message. And sends a request start time message to the device under test.

In this embodiment, the request start time message includes a second test start time. The Request start time message is a DSMP message and the type is an Inform Request message.

Step S103, after receiving the confirmation start time message sent by the device under test, determining a first test start time based on the time delay information in the confirmation start time message.

The confirmation starting time message is generated after the tested device receives the Request starting time message, the confirmation starting time message is a DSMP message, the type of the DSM message is an Inform Request message, time delay information is filled in a field ten in a DTCM format, and the confirmation starting time is filled in a field five in the DTCM format, so that the confirmation starting time message is generated.

In the embodiment of the application, the test equipment can analyze the confirmation starting time message to obtain the time delay information, and perform delay offset based on the time delay information. In this embodiment of the application, the first start time may be obtained by subtracting the time delay information from the second start time. In the embodiment of the application, the test equipment and the tested equipment can be tested simultaneously by confirming the first test starting time.

And step S104, sending a first test data message under the condition that the first test starting time is reached, so as to test the tested device based on the first test data message.

In this embodiment of the present application, the first test data message is a DSMP message, and the type is a Trap message.

In the embodiment of the application, when the test equipment sends the first test data message to the tested equipment, the tested equipment also sends the second test data message to the test equipment, so that the tested equipment is tested.

According to the vehicle networking communication quality evaluation method based on the LTE-V2X PC5, the test equipment sends the request test configuration message to the tested equipment, the tested equipment sends the confirmation configuration message, the test equipment sends the request start time message to the tested equipment after receiving the confirmation configuration message, the tested equipment sends the confirmation start time message to the test equipment, and under the condition that the appointed time is reached, the test equipment and the tested equipment simultaneously send the test data message, so that the test equipment can automatically test the tested equipment, and the test efficiency is improved.

In some embodiments, the step S102 "generating a request start time message in case of receiving a configuration confirmation message sent by the device under test, and sending the request start time message to the device under test" may be implemented by:

step S1021, under the condition that the confirmation configuration message sent by the tested device is received, determining the address information of the tested device based on the confirmation configuration message.

In the embodiment of the application, after the configuration confirmation message is received, the test equipment can analyze the tested equipment to obtain the address information of the tested equipment, wherein the address information is a mac address.

Step S1022, based on the address information and the second test start time, generating a request start time message, and sending the request start time message to the device under test.

In the embodiment of the present application, the address information may be filled in field eight in the DTCM format, the second test start time may be filled in field nine, and then the request start time message may be generated. After the request start time message is generated, it may be sent to the device under test based on the address information.

According to the vehicle networking communication quality evaluation method based on the LTE-V2X PC5, the test equipment sends the request test configuration message to the tested equipment, the tested equipment sends the confirmation configuration message, the test equipment determines the address information of the tested equipment after receiving the confirmation configuration message, and the request start time message is generated based on the address information and the second test start time. And the request start time message is sent to the tested equipment, the tested equipment sends the confirmation start time message to the testing equipment, and the testing equipment and the tested equipment simultaneously send the testing data message under the condition of reaching the appointed time, so that the testing equipment automatically tests the tested equipment, and the testing efficiency is improved.

In some embodiments, after step S104 "in case the first test start time is reached, sending a first test data message to test the device under test based on the first test data message", the method further comprises:

and step S105, sending a request ending test message to the tested device under the condition that the test ending condition is reached.

In this embodiment of the application, the test end condition may be the number of data packets that have sent the first test data message, and the number may be preset. In the embodiment of the application, when the preset sending data packet data is reached, the test ending condition is reached, and the field two in the DTCM format is filled to generate the request ending test message.

The Request ending test message is a DSMP message, and the type is an Inform Request message.

Step S106, under the condition that an end confirmation message sent by the tested device is received, ending the test, wherein the end confirmation message is generated based on the request end test message.

In the embodiment of the application, under the condition that the tested device receives the message requesting to finish the test, the tested device stops sending the second test data message; and sending an end confirmation message to the test equipment, and ending the test under the condition that the test equipment receives the end confirmation message sent by the tested equipment.

According to the method for evaluating the communication quality of the Internet of vehicles based on the LTE-V2X PC5, the test is automatically finished under the condition that the test finishing condition is met, and the test efficiency is improved.

step S107, receiving a second test data message sent by the device under test, where test packet information is recorded in an extended domain of the second test data message, and the second test data message is generated based on the test configuration information.

In this embodiment of the application, the second test data message is a DSMP message, and the type is a Trap message. The format of the information element in the second test data message is a DTRM format, and the test packet information includes: test packet sequence number, test packet timestamp, sequence number of each packet received from the opposite end, timestamp of each packet received from the opposite end, total number of packets received from the opposite end, and the like.

In the embodiment of the application, the tested device can count the information in the first test data message while receiving the first test data message to obtain the test packet sequence number, the test packet timestamp, the sequence number of the received opposite-end last packet, the timestamp of the received opposite-end last packet, the total number of the received opposite-end packets and the like.

In the embodiment of the application, the tested device writes the test packet information into the second test data message and sends the second test data message to the test device.

And S108, carrying out communication performance test on the tested equipment based on the test packet information.

In this embodiment of the present application, the testing device may perform a communication performance test on the device under test based on the test packet information, and may perform a test on the sending performance and the receiving performance of the device under test, where the communication performance test may include: packet loss rate, time delay, throughput, communication distance, and the like.

In the embodiment of the application, if the tested device does not lose the packet, the total number of the test device packets in the tested device data packets received by the test device each time is at most the number of the packets sent by the current test device.

And if the tested equipment loses packets during receiving, starting from the time of packet loss, wherein the total number of the test equipment data packets in the tested equipment data packets received by the test equipment is less than or equal to-1 of the number of the current test equipment sending packets.

If the tested device loses packets during sending, the sending packet loss rate of the tested device and the receiving packet loss rate of the tested device can be counted as long as the tested device receives the data packets of the tested device at least once.

The embodiment of the application further provides an LTE-V2X PC 5-based vehicle networking communication quality evaluation method, which is applied to the tested equipment, wherein the tested equipment can be a computer, a mobile terminal, vehicle-mounted equipment and the like. The function realized by the vehicle networking communication quality evaluation method based on the LTE-V2X PC5 provided by the embodiment of the application can be realized by calling a program code through a processor of a test terminal, wherein the program code can be stored in a computer storage medium.

The embodiment of the application provides a vehicle networking communication quality evaluation method based on LTE-V2X PC5, and fig. 2 is a schematic flow chart of implementation of the vehicle networking communication quality evaluation method based on LTE-V2X PC5, as shown in fig. 2, the method comprises the following steps:

step S201, when receiving a test configuration request message sent by a test device, performing test configuration based on test configuration information in the test configuration request message, and sending a configuration determining message to the test device.

In the embodiment of the application, the message requesting the test configuration is a DSMP message, the type Inform Request message of the DSMP message, and the message requesting the test configuration is analyzed to acquire the test configuration information in a DTCM format under the condition that the tested equipment receives the message requesting the test configuration. After the test configuration information is analyzed, the tested device performs configuration based on the test configuration information, before configuration, a registry service table can be checked, if the communication test application is registered, the test case is configured according to the test configuration information, the network layer function of the tested device is configured, the configuration confirmation message is sent, and if the communication test application is not registered, registration is needed first.

In this embodiment of the present application, the acknowledgment configuration message is a DSMP message, and a type Inform Request message of a DSM message. The device under test may populate field three in the DTCM format to generate the confirm configuration message.

Step S202, under the condition that the request start time message sent by the test equipment is received, sending a determined start time message.

In the embodiment of the present application, after receiving a configuration confirmation message sent by a device under test, a test device generates a request start time message, where the request start time message includes: a second test start time, the determination start time message including reception time delay information, the reception time delay information being determined based on a first time at which the determination start time message is transmitted and a second time at which the request start time message is received.

In the embodiment of the application, the Request start time message is a DSMP message, and the type is an Inform Request message.

In the embodiment of the application, after receiving a Request start time message, the tested device generates an acknowledgement start time message, wherein the acknowledgement start time message is a DSMP message, the type of the DSM message is an Inform Request message, time delay information is filled in a field ten in a DTCM format, and acknowledgement start time is filled in a field five in the DTCM format, so that the acknowledgement start time message is generated.

Step S203, sending a second test data message based on the test configuration information when a second test start time is reached, so that the test equipment performs a test based on the second test data message.

In an embodiment of the present application, the second test data message is a DSMP message, and the type of the second test data message is a Trap message. The testing may be performed based on information in the DTRM format in the second test message, and the testing device may perform a communication performance test on the device under test based on the test packet information, where the communication performance test may include: packet loss rate, time delay, throughput, communication distance, and the like.

In some embodiments, after step S203 "in case that the second test start time is reached, sending a second test data message based on the test configuration information to make the test equipment perform a test based on the second test data message", the method further includes:

step S204, under the condition that a request end test message sent by the test equipment is received, stopping sending the second test data message;

step S205, sending an end confirmation message to the testing device to end the test.

In this embodiment of the application, the end confirmation message is a request end test message and is a DSMP message, and the type is a rap message.

Based on the foregoing embodiments, the embodiments of the present application provide a method for evaluating communication quality of internet of vehicles based on LTE-V2X PC5, where the method is applied to a test system, and the test system includes: fig. 3 is a schematic flow chart of a method for evaluating communication quality of a vehicle networking system based on LTE-V2X PC5 according to an embodiment of the present application, and as shown in fig. 3, the method includes:

step S301, the test equipment generates a request test configuration message according to the test configuration information and broadcasts the request test configuration message.

Step S302, under the condition that the tested device receives the request test configuration message sent by the testing device, the tested device carries out test configuration based on the test configuration information in the request test configuration message, and sends a confirmation configuration message to the testing device.

Step S303, the test device generates a request start time message when receiving the configuration confirmation message sent by the device under test, and sends the request start time message to the device under test.

Wherein the confirmation configuration message is generated by the device under test based on the request test configuration message.

Step S304, the tested device sends a start time determining message under the condition of receiving the start time requesting message sent by the testing device.

Wherein the request start time message includes: a second test start time, the determination start time message including reception time delay information, the reception time delay information being determined based on a first time at which the determination start time message is transmitted and a second time at which the request start time message is received.

Step S305, after receiving the confirmation start time message sent by the device under test, the test device determines a first test start time based on the time delay information in the confirmation start time message.

Wherein the time delay information is determined by the device under test based on a first time at which the determination start time message is sent and a second time at which the request start time message is received, the acknowledgement start time message being generated based on the request start time message;

step S306, the test device sends a first test data message when the first test start time is reached, so as to test the device under test based on the first test data message.

Step S307, when the tested device reaches the second test start time, sending a second test data message based on the test configuration information, so that the test device performs a test based on the second test data message.

Step S308, under the condition that the test ending condition is met, the test equipment sends a request ending test message to the tested equipment.

Step S309, when receiving the request end test message sent by the test device, the device under test stops sending the second test data message, and sends an end confirmation message to the test device.

Step S310, the test device ends the test when receiving the end confirmation message sent by the device under test.

Wherein the end confirmation message is generated based on the request end test message.

Based on the foregoing embodiments, the embodiment of the present application further provides a method for evaluating communication quality of internet of vehicles based on LTE-V2X PC5, where the method includes:

step S401, the testing device and the device under test register the communication test application aid in the network layer, and the network layer can analyze and execute corresponding operations on the communication test protocol after registration.

Step S402, the test equipment broadcasts a Request test configuration DTCM in an Inform Request message format at a fixed frequency according to the test case configuration information, after the tested equipment receives the Request test configuration DTCM, a registration service table is checked, if communication test application is registered, the network layer function of the tested equipment is configured according to the configuration information of the test case in the DTCM, and then the confirmation configuration DTCM in the Inform Request format of the test equipment is replied. And after receiving the configuration confirmation DTCM, the test equipment sends a Request start time DTCM in the form of an Inform Request, and after receiving the configuration confirmation DTCM, the tested equipment replies a confirmation start time DTCM in the form of a Trap message.

In step S403, the test device and the device under test simultaneously start sending a Trap message format DTRM at the appointed start test time. In the testing process, as long as the packet loss between the testing device and the tested device is not permanent, after the testing device receives the DTMM of the tested device, on one hand, the information of the tested device such as the transmission packet loss rate, the time delay, the throughput, the communication distance and the like can be counted, and on the other hand, the information of the tested device such as the reception packet loss rate, the time delay, the throughput, the communication distance and the like can be counted through the receiving condition recorded by the DTMM of the tested device.

Step S404, the test equipment sends a Request of an Inform Request format to finish the test DTCM when the test equipment reaches the test finishing condition, the tested equipment receives and stops the communication test service, then feeds back a finish confirmation DTCM of a Trap format of the test equipment, and the test is finished.

Based on the vehicle networking communication quality evaluation method based on the LTE-V2X PC5, the embodiment of the application further provides a test system which provides support for realizing the automatic execution of the communication performance test and automatically analyzing the test result. The test system has the function of importing and configuring test cases, and can realize repeated multiplexing of one-time case configuration. The test system also has the functions of automatic analysis of test results and automatic execution of test cases, if the test cases are configured, all the cases are automatically executed, no additional operation is required by test personnel in the test process, the test system automatically collects and statistically analyzes test process data, and finally a test result report is obtained.

The test system should include three interfaces to communicate with the test equipment or devices under test. The first interface is required to transmit the test case configuration to the test equipment and control the test equipment to start sending a request configuration DTCM message. And the second interface is required to realize that the receiving test equipment returns the received data packet of the tested equipment in the test process. And the third interface is used for receiving external influence factors sensed by the test equipment in the test process, wherein the external influence factors comprise position change, antenna signal strength change, possible abnormal information and the like in the test process.

The communication test system should provide a secondary development interface and corresponding scheduling strategy. The secondary development interface protocol comprises test case configuration information, and receives data packet format information and external factor information. The secondary development interface is realized in a local area network communication mode and is not limited by the development environments of different devices. The test system may terminate the test early and count the data in connection with the end of the test.

Based on the foregoing embodiments, the present application provides an LTE-V2X PC 5-based vehicle networking communication quality assessment apparatus, where the apparatus includes modules and units included in the modules, and the modules may be implemented by a processor in a computer device; of course, the implementation can also be realized through a specific logic circuit; in the implementation process, the processor may be a Central Processing Unit (CPU), a Microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

The embodiment of the present application provides a testing device, fig. 4 is a schematic structural diagram of an internet of vehicles communication quality evaluation device based on LTE-V2X PC5 provided by the embodiment of the present application, and as shown in fig. 4, an internet of vehicles communication quality evaluation device 400 based on LTE-V2X PC5 includes:

a first generating module 401, configured to generate a test configuration request message according to the test configuration information, and broadcast the test configuration request message;

a second generating module 402, configured to generate a request start time message when receiving a configuration confirmation message sent by the device under test, and send the request start time message to the device under test, where the configuration confirmation message is generated by the device under test based on the request test configuration message;

a first determining module 403, configured to determine, after receiving a confirmation start time message sent by the device under test, a first test start time based on time delay information in the confirmation start time message, where the time delay information is determined by the device under test based on a first time when the confirmation start time message is sent and a second time when the request start time message is received, and the confirmation start time message is generated based on the request start time message;

a first testing module 404, configured to send a first test data message when the first test start time is reached, so as to test the device under test based on the first test data message.

In some embodiments, the second generating module 402 comprises:

the device comprises a determining unit, a judging unit and a judging unit, wherein the determining unit is used for determining the address information of the tested device based on a confirmation configuration message when receiving the confirmation configuration message sent by the tested device;

and the generating unit is used for generating a request starting time message based on the address information and the second test starting time and sending the request starting time message to the tested device.

In some embodiments, the vehicle networking communication quality assessment apparatus 400 based on LTE-V2X PC5 further comprises: the first sending module is used for sending a test ending request message to the tested device under the condition that a test ending condition is met;

the first receiving module is configured to end the test when receiving an end confirmation message sent by the device under test, where the end confirmation message is generated based on the request end test message.

In some embodiments, the vehicle networking communication quality assessment apparatus 400 based on LTE-V2X PC5 further comprises:

a second receiving module, configured to receive a second test data message sent by the device under test, where test packet information is recorded in an extended domain of the second test data message, and the second test data message is generated based on the test configuration information;

and the second testing module is used for testing the communication performance of the tested equipment based on the testing packet information.

The embodiment of the application further provides a testing arrangement, vehicle networking communication quality evaluation device based on LTE-V2X PC5 includes:

the test device comprises a configuration module, a test device and a test device, wherein the configuration module is used for carrying out test configuration based on test configuration information in a request test configuration message and sending a confirmation configuration message to the test device under the condition of receiving the request test configuration message sent by the test device;

a second sending module, configured to send a start time determining message when receiving a start time request message sent by the test device, where the start time request message includes: a second test start time, the determination start time message including reception time delay information, the reception time delay information being determined based on a first time at which the determination start time message is transmitted and a second time at which the request start time message is received;

and the third testing module is used for sending a second testing data message based on the testing configuration information under the condition that a second testing starting time is reached, so that the testing equipment performs testing based on the second testing data message.

In some embodiments, the vehicle networking communication quality evaluation device based on LTE-V2X PC5 further comprises:

the stopping module is used for stopping sending the second test data message under the condition of receiving a request ending test message sent by the test equipment;

and the third sending module is used for sending a finishing confirmation message to the test equipment so as to finish the test.

It should be noted that, in the embodiment of the present application, if the above-mentioned vehicle networking communication quality evaluation method based on LTE-V2X PC5 is implemented in the form of a software functional module and is sold or used as a standalone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Accordingly, the present application provides a storage medium having a computer program stored thereon, wherein the computer program is used for implementing the steps of the method for evaluating the communication quality of the internet of vehicles based on LTE-V2X PC5 provided in the above embodiments when being executed by a processor.

The embodiment of the application provides an Internet of vehicles communication quality evaluation system based on LTE-V2X PC 5; fig. 5 is a schematic structural diagram of a communication quality evaluation system of an internet of vehicles based on LTE-V2X PC5 according to an embodiment of the present application, and as shown in fig. 5, the communication quality evaluation system 500 of an internet of vehicles based on LTE-V2X PC5 includes: a processor 501, at least one communication bus 502, a user interface 503, at least one external communication interface 504, and a memory 505. Wherein the communication bus 502 is configured to enable connective communication between these components. The user interface 503 may include a display screen, and the external communication interface 504 may include a standard wired interface and a wireless interface, among others. The processor 501 is configured to execute a program of the vehicle networking communication quality evaluation method based on the LTE-V2X PC5 stored in the memory, so as to implement the steps in the vehicle networking communication quality evaluation method based on the LTE-V2X PC5 provided in the above embodiment.

The above description of the display device and storage medium embodiments is similar to the description of the method embodiments above, with similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the computer device and the storage medium of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It is to be noted here that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the advantages and disadvantages of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.

Alternatively, the integrated unit described above may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a controller to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An LTE-V2X PC 5-based vehicle networking communication quality evaluation method is applied to test equipment and comprises the following steps:

under the condition of receiving a confirmation configuration message sent by the tested device, determining the address information of the tested device based on the confirmation configuration message; generating a request start time message based on the address information and a second test start time, and sending the request start time message to the tested device, wherein the confirmation configuration message is generated by the tested device based on the request test configuration message; the request starting time message comprises a second test starting time, and the tested device sends a second test data message based on the test configuration information under the condition that the second test starting time is reached;

under the condition that the first test starting time is reached, sending a first test data message to test the tested device based on the first test data message; each message is a dedicated short protocol DSMP message, and a test protocol is defined in an extension domain of the DSMP message.

2. The method of claim 1, further comprising:

3. The method of claim 1, further comprising:

and carrying out communication performance test on the tested equipment based on the test packet information.

4. An LTE-V2X PC 5-based vehicle networking communication quality evaluation method is applied to a device to be tested and is characterized by comprising the following steps:

under the condition of receiving a request start time message sent by the test equipment, sending a confirmation start time message, wherein the request start time message comprises: a second test start time, the acknowledgment start time message including time delay information, the time delay information determined based on a first time the acknowledgment start time message was sent and a second time the request start time message was received;

after receiving the message of the confirmation starting time, the test equipment determines a first test starting time based on the time delay information in the message of the confirmation starting time, and sends a first test data message under the condition of reaching the first test starting time;

under the condition that a second test starting time is reached, sending a second test data message based on the test configuration information so that the test equipment performs a test based on the second test data message;

each message is a dedicated short protocol DSMP message, and a test protocol is defined in an extension domain of the DSMP message.

5. The method of claim 4, further comprising:

and sending an end confirmation message to the test equipment to end the test.

6. An LTE-V2X PC 5-based vehicle networking communication quality evaluation device, comprising:

the second generation module is used for determining the address information of the tested device based on the confirmation configuration message under the condition that the confirmation configuration message sent by the tested device is received; generating a request start time message based on the address information and a second test start time, and sending the request start time message to the tested device, wherein the confirmation configuration message is generated by the tested device based on the request test configuration message; the request starting time message comprises a second test starting time, and the tested device sends a second test data message based on the test configuration information under the condition that the second test starting time is reached;

a first determining module, configured to determine a first test starting time based on time delay information in a confirmation starting time message after receiving the confirmation starting time message sent by the device under test, where the time delay information is determined by the device under test based on a first time when the confirmation starting time message is sent and a second time when the request starting time message is received, and the confirmation starting time message is generated based on the request starting time message;

the first testing module is used for sending a first testing data message under the condition that the first testing starting time is reached so as to test the tested equipment based on the first testing data message; each message is a dedicated short protocol DSMP message, and a test protocol is defined in an extension domain of the DSMP message.

7. An LTE-V2X PC 5-based vehicle networking communication quality evaluation system, characterized by comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to execute the LTE-V2X PC 5-based vehicle networking communication quality evaluation method according to any one of claims 1 to 3 or 4 to 5.

8. A storage medium storing a computer program executable by one or more processors and operable to implement a method for assessing communication quality of internet of vehicles based on LTE-V2X PC5 as claimed in any one of claims 1 to 3 or 4 to 5.