CN110677829B - LTE-V2X test system and test method for long term evolution vehicle to everything - Google Patents

LTE-V2X test system and test method for long term evolution vehicle to everything Download PDF

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CN110677829B
CN110677829B CN201811519783.9A CN201811519783A CN110677829B CN 110677829 B CN110677829 B CN 110677829B CN 201811519783 A CN201811519783 A CN 201811519783A CN 110677829 B CN110677829 B CN 110677829B
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terminal
lte
test
http
simulator
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CN110677829A (en
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王会丽
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Datang Linktester Technology Co ltd
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Datang Linktester Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/18—Protocol analysers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic

Abstract

The application discloses LTE-V2X test system and test method for long term evolution vehicle-to-everything, and the test system comprises: the test control terminal is used for constructing an LTE-V2X test case, sending various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator and constructing various V2X test scenes for testing a V3 interface or a V1 interface to perform data transmission; constructing an HTTP data packet and/or a PDCP data packet which need to be transmitted through a V3 interface or a V1 interface, and transmitting and receiving messages with a V2X terminal to be tested based on various V2X test scenes; and checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result. The test system and the test method provided by the application reduce the requirements on the test terminal, improve the protocol test on the test terminal and improve the test efficiency.

Description

LTE-V2X test system and test method for long term evolution vehicle-to-everything
Technical Field
The application relates to the technical field of vehicle networking, in particular to a long term evolution vehicle-to-everything LTE-V2X test system and a test method.
Background
The existing LTE-V2X Testing scheme specified by the third Generation Partnership project (3 rd Generation Partnership project,3 gpp) is a protocol conformance Testing scheme based on TTCN (Testing and Test Control Notation). It simulates The LTE Network part (corresponding to E-UTRA V2X PTC software module shown in fig. 1), the ssee (System Simulator User Equipment) part and The LTE-V2X terminal to perform PC5 (The reference point between User Equipment used for control and User plane, between User Equipment supporting near field Communication and between User Equipment-to-Network relay), another device for Direct Discovery of control plane and User plane, direct Communication, and GNSS reference point between User Equipment and Network relay process), corresponding to The SideLink PTC software module shown in fig. 1, and The Simulator.
As can be seen from fig. 1: the existing TTCN test model issues a V2X configuration through an LTE access network (mainly embodying the situation based on an LTE-Uu interface), simulates a location, i.e., a longitude and latitude change trajectory, when a terminal moves at different speeds through a GNSS Simulator, and forwards a Data Packet from a PDCP (Packet Data conversion Protocol) layer on a PC5 interface of a terminal to be tested through an ssee, so as to check the behavior of the terminal to be tested.
In the existing TTCN protocol conformance testing scheme, the testing terminal needs to enter the testing mode E for checking the data packet of the PC5 interface, and the PDCP layer data packet of the PC5 interface is checked by forwarding of the ssee, which may cause the technical problems of high requirements on the terminal and insufficient testing for the implementation of the test.
Disclosure of Invention
The application provides a long term evolution vehicle-to-everything LTE-V2X test system and a test method, which are used for solving the technical problems that in the prior art, a test terminal can only test when a PDCP layer is checked on a PC5 interface data packet and a test mode E is required to be entered by a test terminal in a TTCN protocol consistency test scheme.
In a first aspect, the present application provides a long term evolution vehicle-to-everything LTE-V2X test system, including a test control terminal, an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, wherein:
the test control terminal is used for constructing an LTE-V2X test case and sending various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator so that the LTE system simulator, the LTE-V2X agent and the GNSS simulator can construct various V2X test scenes for testing a V3 interface or a V1 interface to transmit data;
the test control terminal is also used for constructing a hypertext transfer protocol (HTTP) data packet and/or a packet data protocol (PDCP) data packet which needs to be transmitted through a V3 interface or a V1 interface, and performing message receiving and transmitting with the V2X terminal to be tested based on various V2X test scenes; and checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result.
The test system provided by the embodiment of the application is additionally provided with transmission and detection of the HTTP data packet on the basis of transmission and detection of the original PDCP data packet, so that the purpose of testing the V1 interface and the V3 interface can be realized on the basis of the original detection.
In one possible embodiment, the test system further comprises:
and the router is used for connecting the test control terminal, the LTE system simulator, the LTE-V2X agent and the GNSS simulator through a network port.
In one possible embodiment, the test control terminal includes:
the main control module is used for loading the test case constructed and compiled by the TTCN language, starting and executing the test case, and sending various configuration parameters in the test case to the LTE system simulator, the GNSS simulator and the LTE-V2X agent to construct various V2X test scenes; checking based on PDCP data packets and/or HTTP data packets transmitted between the various V2X test scenes and the V2X terminal to be tested, and determining the behavior of the V2X terminal to be tested according to the checking result;
the V2X control module is used for generating a corresponding HTTP data packet, a PDCP data packet and an extensible markup language XML file according to the requirement of the TTCN test case, and can read and write the node content in the XML file;
and the intermediate module is used for establishing socket connection with the LTE system simulator, the LTE-V2X agent, the GNSS simulator, the V2X control module and the V2X terminal to be tested respectively to receive and send messages.
In one possible embodiment, the main control module is further configured to,
establishing control interfaces HTTP _ CTRL, HTTP _ Server ports and HTTP _ Client ports according to the various configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service in a specific scene; the HTTP _ Server port is used for transmitting HTTP messages serving as an HTTP Server on a network side; the HTTP _ Client port is used for transmitting HTTP messages which serve as HTTP clients on the network side.
In one possible embodiment, the intermediate module is also adapted to,
establishing a socket connection of a Transmission Control Protocol (TCP) with the GNSS simulator, converting the configuration message of the TTCN test case to the GNSS simulator into a character string type instruction, and enabling the GNSS simulator to execute corresponding actions;
establishing socket connection of a User Datagram Protocol (UDP) with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs PC5 interface data interaction with the V2X terminal to be tested;
establishing a TCP socket connection with the V2X control module, and processing the pre-configuration and configuration change messages of the V2X based on HTTP;
establishing two socket connections of a user datagram protocol UDP with the V2X terminal to be tested, connecting a simulation V3 interface by using one socket according to an HTTP message issued by an IP PTC of the TTCN test case, and transmitting a V2X pre-configuration and configuration change message; connecting an analog V1 interface by using another socket, and transmitting a V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
In a second aspect, a long term evolution vehicle-to-everything LTE-V2X test method is provided, and the method is applied to an LTE-V2X test system, where the LTE-V2X test system includes a test control terminal, an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, where:
the method comprises the steps that a test control terminal builds an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator, so that the LTE system simulator, the LTE-V2X agent and the GNSS simulator build various V2X test scenes for testing a V3 interface or a V1 interface to perform data transmission;
constructing a hypertext transfer protocol (HTTP) data packet and/or a Packet Data Convergence Protocol (PDCP) data packet which needs to be transmitted through a V3 interface or a V1 interface, and transmitting and receiving messages with the V2X terminal to be tested based on various V2X test scenes; and checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result.
In one possible implementation, the sending the various configuration parameters to the LTE system simulator, the LTE-V2X agent, and the GNSS simulator includes:
and sending the various configuration parameters to a test control terminal, an LTE system simulator and a GNSS simulator through an Ethernet port.
In a possible implementation manner, the test control terminal constructs an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, including:
loading the test case constructed and compiled by TTCN language, starting to execute the test case, and sending various configuration parameters in the test case to the LTE system simulator and the GNSS simulator to construct various V2X test scenes; checking the PDCP data packets and/or HTTP data packets transmitted between the various V2X test scenes and the V2X terminal to be tested, and determining the behavior of the V2X terminal to be tested according to the checking result;
generating corresponding HTTP data packets, PDCP data packets and extensible markup language XML files according to the requirements of the TTCN test case, and reading and writing the node contents in the XML files;
and performing message interaction based on the socket connection established among the test control terminal, the LTE system simulator, the V2X terminal to be tested, the GNSS simulator and the LTE system simulator.
In one possible implementation, before sending the various configuration parameters to the LTE system simulator, the LTE-V2X agent, and the GNSS simulator, the method further includes:
establishing control interfaces HTTP _ CTRL, HTTP _ Server ports and HTTP _ Client ports according to the various configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service in a specific scene; the HTTP _ Server port is used for transmitting HTTP messages serving as an HTTP Server on a network side; the HTTP _ Client port is used for transmitting HTTP messages which serve as HTTP clients on the network side.
In one possible implementation, sending the various configuration parameters to the LTE system simulator, the LTE-V2X agent, the GNSS simulator comprises:
establishing a socket connection of a Transmission Control Protocol (TCP) with the GNSS simulator, converting the configuration message of the TTCN test case to the GNSS simulator into a character string type instruction, and enabling the GNSS simulator to execute corresponding actions;
establishing a socket connection of a user datagram protocol UDP (user datagram protocol) with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP (packet data convergence protocol) data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs PC5 interface data interaction with the V2X terminal to be tested;
establishing two socket connections of a user datagram protocol UDP with the V2X terminal to be tested, connecting a simulation V3 interface by using one socket according to an HTTP message issued by an IP PTC of the TTCN test case, and transmitting a V2X pre-configuration and configuration change message; another socket is used for connecting the simulation V1 interface and transmitting the V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
In a third aspect, a test control terminal is applied to a long term evolution vehicle to a universal LTE-V2X test system, and the LTE-V2X test system includes a test control terminal, an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, and the test control terminal includes:
a memory for storing instructions executed by the processor;
a processor for executing instructions stored in the memory to perform the method of any of the second aspects.
In a fourth aspect, there is provided a computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of any of the second aspects.
Drawings
FIG. 1 is a schematic diagram of a test model software module structure of a 3GPP TTCN-3-based LTE-V2X protocol conformance case in the prior art;
fig. 2 is a schematic structural diagram of an LTE-V2X test system for long term evolution vehicle to everything provided in the embodiment of the present application;
FIG. 3 is a schematic diagram of an internal component module structure of a test control terminal according to an embodiment of the present application;
FIG. 4 is a diagram of a user plane protocol stack of a PC5 interface in the prior art;
fig. 5 is a schematic structural diagram of a newly added software module in a TTCN-3 new test model for implementing an LTE-V2X service test according to an embodiment of the present application;
fig. 6 is a schematic flowchart of a long term evolution vehicle-to-everything LTE-V2X test method provided in the embodiment of the present application.
Detailed Description
Aiming at the technical problems that in the prior art, according to a TTCN protocol consistency test scheme, a test terminal can be tested only by entering a test mode E for checking a PC5 interface data packet, and a PDCP data packet can only be checked in a V2X service plane test, so that the requirement on the terminal for realizing the test is high, and the V2X service plane test is insufficient.
The invention mainly provides a test system which can conveniently simulate various service scenes of LTE-V2X in a laboratory and test the information of a V2X service plane.
The method and apparatus provided by the embodiments of the present application are further described in detail below with reference to the accompanying drawings and specific application scenarios:
as shown in fig. 2, an embodiment of the present application provides a long term evolution vehicle-to-everything LTE-V2X test system, and the test specifically may include a test control terminal 201, an LTE system simulator 202, an LTE-V2X agent 203, and a GNSS simulator 204, where:
in the test system provided in this embodiment, in order to simulate all situations that may be encountered by the V2X terminal to be tested, the system includes an LTE system simulator 202, an LTE-V2X agent 203, and a GNSS simulator 204 for simulating various V2X test scenarios, and specifically, functions that may be realized by each component in the test system specifically include:
the LTE System simulator 202 is configured to simulate an LTE cell, send an SIB21 (System Information Block Type 21) message, perform mobility management on the V2X terminal to be tested, update the configuration of the V2X terminal to be tested through an RRC CONNECTION RECONFIGURATION message, and send the updated Information to the V2X terminal to be tested.
The LTE-V2X agent 203 is used for simulating an interactive terminal interacting with a V2X terminal to be tested through a PC5 interface, receiving first configuration information issued by the test control terminal, acquiring V2X resource information used for communicating with the PC5 interface of the V2X terminal to be tested based on the first configuration information, and reporting a PDCP data packet received through the PC5 interface to the test control terminal;
the V2X resource information may specifically be: and the PC5 communication frequency, bandwidth, the number of sub-channels, coverage area, timing information and the like are used for checking the TTCN test case.
The GNSS simulator 204 in the test system is used for simulating the position and speed change of the tested V2X terminal, and specifically, the GNSS simulator 204 in the global navigation satellite system is used for realizing the initial synchronization of the PC5 interface of the to-be-tested V2X terminal and the LTE-V2X agent 203, and generating position change information (for example, latitude and longitude information and speed of the to-be-tested V2X terminal) generated when the to-be-tested V2X terminal moves rapidly and power change information generated by the opening and closing of satellite signals; and transmits the location change information and/or the power change information to the test control terminal 201. The specific functions may include:
(1) Separate simulation of L1 satellite signals supporting GPS;
(2) The method comprises the steps that controlled data are acquired from a test control terminal through a network port and needed satellite signals are generated; the types of control can be divided into at least five types as follows:
starting a satellite signal;
turning off the satellite signals;
importing a specific GNSS Scenario;
simulating GNSS signal changes generated when a terminal to be tested moves from one zone to another zone in a certain GNSS Scenario and generating a corresponding motion trail diagram;
turn on the GNSS RF power and turn off the RF power but keep some simulation of the GNSS sconario.
Based on the above components in the test system, in order to implement the test on the V3 interface or the V1 interface, the test control terminal 201 in the embodiment of the present application may specifically be configured to:
the test control terminal 201 is configured to construct an LTE-V2X test case, and send various configuration parameters to an LTE system simulator 202, an LTE-V2X agent 203, and a GNSS simulator 204, so that the LTE system simulator 202, the LTE-V2X agent 203, and the GNSS simulator 203 construct various V2X test scenes for testing a V3 interface or a V1 interface to perform data transmission;
the test control terminal 201 is further configured to construct a hypertext transfer protocol HTTP data packet and/or a PDCP data packet that needs to be transmitted through a V3 interface or a V1 interface, and perform messaging with the V2X terminal to be tested based on the various V2X test scenarios; and checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result.
The test system provided by the embodiment of the application is additionally provided with the transmission and detection of the HTTP data packet on the basis of the transmission and detection of the original PDCP data packet, so that the purpose of testing the V1 interface and the V3 interface can be realized on the basis of the original detection.
In order to achieve the purpose of testing the V1 interface and the V3 interface by exchanging information between the test control terminal 201 and the LTE system simulator 202, the LTE-V2X agent 203, and the GNSS simulator 204, the test control terminal 201 needs to be provided with a physical interface; the physical interface is connected with the LTE system simulator 202, the LTE-V2X agent 203 and the GNSS simulator 204. The specific test system may further include:
and the router 205 is used for connecting the test control terminal 201, the LTE system simulator 202, the LTE-V2X agent 203, the GNSS simulator 204 and the V2X terminal to be tested through a network port.
Optionally, based on the main function composition and the connection relationship of the above modules, in order to implement a specific test, the test control terminal 201 may specifically include (as shown in fig. 3):
the V2X control module 301 is configured to generate a corresponding HTTP data packet, a PDCP data packet, and an XML file according to the requirement of the TTCN test case, and can read and write node content in the XML file;
the V2X control module 301 may be a program module running on the test control terminal 202, and specifically may be generated by secondary development based on an open-source apache-tomcat server, and the program module adds support to an XML data structure related to the V2X service.
The main control module 302 is configured to load the test case created and compiled by the TTCN language, start execution of the test case, and send various configuration parameters in the test case to the LTE system simulator and the GNSS simulator to create various V2X test scenes; checking the PDCP data packets and/or HTTP data packets transmitted between the various V2X test scenes and the V2X terminal to be tested, and determining the behavior of the V2X terminal to be tested according to the checking result;
in this embodiment, in order to facilitate the user to input configuration information, the main control module 302 may further display a pre-designed human-machine interface, and the user may input configuration parameters for testing through the human-machine interface. So that the test provides a corresponding configuration and test based on the parameters.
In addition, in the TTCN protocol conformance testing scheme in the prior art, in the PC5 interface user plane protocol stack (specifically shown in fig. 4), the V2X message is directly communicated through the user plane of the PC5 interface, but there is a layer between the PDCP layer and the V2X application, so that the behavior of the V2X terminal is checked only from the perspective of the PDCP layer, which may make the service plane test of the V2X terminal insufficient. Based on the problem, when sending various configuration parameters in the test case to the LTE system simulator, the GNSS simulator, and the LTE-V2X agent to construct various V2X test scenarios, the main control module 302 further instructs the LTE system simulator 202 to correspondingly provide an interface capable of testing the protocol layers of the spaced PDCP layer and the V2X application based on the problem, and the specific implementation may be:
the LTE system simulator 302 transmits data packets through a V3 interface for communication between the V2X control function node and the terminal, and a V1 interface between the V2X application program on the terminal side and the V2X service server.
Further, in order to construct various types of V2X test scenarios, in this embodiment, for the main control module 302, various ports (as shown in fig. 5) may also be constructed based on configuration parameters of a test case, so as to generate various test environments, which specifically may be:
the main control module 302 is further configured to establish a control interface HTTP _ CTRL, an HTTP _ Server port, and an HTTP _ Client port based on the configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service under a specific scene; the HTTP _ Server port is used for transmitting HTTP messages serving as an HTTP Server on a network side; the HTTP _ Client port is used for transmitting HTTP information which serves as an HTTP Client side on the network side.
And the intermediate module 303 is used for establishing socket connection with the LTE system simulator, the LTE-V2X agent, the GNSS simulator, the V2X control module, and the V2X terminal to be tested, respectively, to receive and transmit messages. The intermediate module 303 is specifically configured to:
establishing a socket connection of a Transmission Control Protocol (TCP) with the GNSS simulator, converting the configuration message of the TTCN test case to the GNSS simulator into a character string type instruction, and enabling the GNSS simulator to execute corresponding actions;
establishing a socket connection of a user datagram protocol UDP (user datagram protocol) with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP (packet data convergence protocol) data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs setting interaction with the V2X terminal to be tested;
establishing a TCP socket connection with the V2X control module, and processing the pre-configuration and configuration change messages of the V2X based on HTTP;
establishing two socket connections of a user datagram protocol UDP with the V2X terminal to be tested, connecting a simulation V3 interface by using one socket according to an HTTP message issued by an IP PTC of the TTCN test case, and transmitting a V2X pre-configuration and configuration change message; connecting an analog V1 interface by using another socket, and transmitting a V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
As shown in fig. 6, based on the test system, an embodiment of the present application further provides a long term evolution vehicle-to-everything LTE-V2X test method, where the method is applied to an LTE-V2X test system, where the LTE-V2X test system includes a test control terminal, an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, and the method specifically includes:
601, a test control terminal constructs an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator, so that the LTE system simulator, the LTE-V2X agent and the GNSS simulator construct various V2X test scenes for testing a V3 interface or a V1 interface to perform data transmission;
in order to realize the connection between the test control terminal and other structures in the test system, the test system can also comprise a router, and the test control terminal sends various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator based on the router; the specific implementation can be as follows:
and sending the various configuration parameters to a test control terminal, an LTE system simulator and a GNSS simulator through an Ethernet port.
Step 602, constructing a hypertext transfer protocol (HTTP) data packet and/or a PDCP data packet which need to be transmitted through a V3 interface or a V1 interface, and performing message transceiving with the V2X terminal to be tested based on various V2X test scenes;
step 603, the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be tested are/is checked, and the behavior of the V2X terminal to be tested is determined according to the result of the check.
In order to implement the transmission of various configuration parameters to the LTE system simulator, the LTE-V2X agent, and the GNSS simulator, it is necessary to establish various connections and ports for implementing transmission between the test control terminal and the LTE system simulator, the LTE-V2X agent, and the GNSS simulator, and the method specifically includes:
the socket connection to be established may specifically include:
(1) Establishing socket connection of a Transmission Control Protocol (TCP) between the GNSS simulators, and converting configuration information of the TTCN test case on the GNSS simulators into a character string type instruction to enable the GNSS simulators to execute corresponding actions;
(2) Establishing socket connection of a User Datagram Protocol (UDP) with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs PC5 interface data interaction with the V2X terminal to be tested;
(3) Establishing two socket connections of a user datagram protocol UDP with the V2X terminal to be tested, connecting a simulation V3 interface by using one socket according to an HTTP message issued by an IP PTC of the TTCN test case, and transmitting a V2X pre-configuration and configuration change message; another socket is used for connecting the simulation V1 interface and transmitting the V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
TTCN port: establishing control interfaces HTTP _ CTRL, HTTP _ Server ports and HTTP _ Client ports according to the various configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service under a specific scene; the HTTP _ Server port is used for transmitting HTTP messages of which the network side is used as an HTTP Server; the HTTP _ Client port is used for transmitting HTTP messages which serve as HTTP clients on the network side.
Based on the set connection and port, the test control terminal constructs an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent, and a GNSS simulator, and the specific implementation may be:
loading the test case constructed and compiled by the TTCN language, starting and executing the test case, and sending various configuration parameters in the test case to the LTE system simulator, the LTE-V2X agent and the GNSS simulator to construct various V2X test scenes; checking the PDCP data packets and/or HTTP data packets transmitted between the various V2X test scenes and the V2X terminal to be tested, and determining the behavior of the V2X terminal to be tested according to the checking result;
generating a corresponding HTTP data packet, a PDCP data packet and an extensible markup language XML file according to the requirement of the TTCN test case, and reading and writing the node content in the XML file;
and performing message interaction based on the socket connection established among the test control terminal, the LTE system simulator, the V2X terminal to be tested, the GNSS simulator and the LTE system simulator.
Based on the test system and the implementation method, the logic for implementing the test of the V2X service may include the following specific implementation steps:
after the V2X terminal to be tested is started, initial synchronization is firstly carried out with the GNSS Simulator.
In order to execute the V2X service, the V2X terminal to be tested searches for the V2X control function node, and sends a GET message of HTTP to the address of the V2X control node server through the V3 interface. The GET message is forwarded to the TTCN test case through the intermediate module.
The HTTP _ PTC module sends a 200OK message to the XCAP Server through the XCAP _ CTRL interface, the 200OK message comprises XML BODY content (3 GPP TS24.385) of a V2X Communication Provisioning node, and the XCAP Server forms an HTTP data packet format and transmits the HTTP data packet format back to the intermediate module.
And the intermediate module forwards the information to the terminal to be tested to complete the pre-configuration process of the V2X terminal to be tested.
Further, if the network side needs to change the configuration of the V2X terminal to be tested, the network side sends a REPLACE message through the HTTP PTC group, the XML BODY includes a V2X Communication Provisioning node, the reply message is sent to the V2X terminal to be tested through the XCAP Server group HTTP packet and then the V2X terminal to be tested responds to the 200OK and returns the 200OK to the TTCN test case.
Further, an uplink data packet of the V2X terminal to be tested as a V2X service is forwarded to the TTCN test case by the intermediate module, sent to the HTTP PTC for processing and grouping the content of the response message, and then forwarded to the XCAP Server group HTTP data packet by the intermediate module, and the response message of the XCAP Server is forwarded to the V2X terminal to be tested by the intermediate module.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (8)

1. The long term evolution vehicle-to-everything LTE-V2X test system is characterized by comprising a test control terminal, an LTE system simulator, an LTE-V2X agent and a GNSS simulator, wherein:
the test control terminal is used for constructing an LTE-V2X test case and sending various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator so that the LTE system simulator, the LTE-V2X agent and the GNSS simulator can construct various V2X test scenes for testing a V3 interface or a V1 interface to transmit data; the LTE-V2X agent is used for simulating an interactive terminal which interacts with a V2X terminal to be tested through a PC5 interface;
the test control terminal is also used for constructing a hypertext transfer protocol (HTTP) data packet and/or a packet data protocol (PDCP) data packet which needs to be transmitted through a V3 interface or a V1 interface, and performing message receiving and transmitting with the V2X terminal to be tested based on various V2X test scenes; checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result;
wherein, the test control terminal includes:
the main control module is used for loading the test case constructed and compiled by the TTCN language, starting and executing the test case, and sending various configuration parameters in the test case to the LTE system simulator, the GNSS simulator and the LTE-V2X agent to construct various V2X test scenes; checking the PDCP data packets and/or HTTP data packets transmitted between the various V2X test scenes and the V2X terminal to be tested, and determining the behavior of the V2X terminal to be tested according to the checking result;
the V2X control module is used for generating a corresponding HTTP data packet, a PDCP data packet or an extensible markup language XML file according to the requirement of the TTCN test case, and can read and write the node content in the XML file;
and the intermediate module is used for establishing socket connection with the LTE system simulator, the LTE-V2X agent, the GNSS simulator, the V2X control module and the V2X terminal to be tested respectively to receive and send messages.
2. The test system of claim 1, further comprising:
and the router is used for connecting the test control terminal, the LTE system simulator, the LTE-V2X agent and the GNSS simulator through a network port.
3. The test system of claim 1, wherein the master module is further to,
establishing control interfaces HTTP _ CTRL, HTTP _ Server ports and HTTP _ Client ports according to the various configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service in a specific scene; the HTTP _ Server port is used for transmitting HTTP messages of which the network side is used as an HTTP Server; the HTTP _ Client port is used for transmitting HTTP messages of the HTTP Client at the network side.
4. The test system of claim 1 or 3, wherein the intermediate module is further configured to,
establishing a socket connection of a Transmission Control Protocol (TCP) with the GNSS simulator, converting the configuration message of the TTCN test case to the GNSS simulator into a character string type instruction, and enabling the GNSS simulator to execute corresponding actions;
establishing socket connection of a User Datagram Protocol (UDP) with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs PC5 interface data interaction with the V2X terminal to be tested;
establishing a TCP socket connection with the V2X control module, and processing the pre-configuration and configuration change message of the V2X based on HTTP;
establishing two UDP socket connections with the V2X terminal to be tested, and sending HTTP messages according to the IP PTC of the TTCN test case; one socket is used for connecting an analog V3 interface, and V2X pre-configuration and configuration change messages are transmitted; connecting an analog V1 interface by using another socket, and transmitting a V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
5. The LTE-V2X test method is applied to an LTE-V2X test system, the LTE-V2X test system comprises a test control terminal, an LTE system simulator, an LTE-V2X agent and a GNSS simulator, wherein:
the method comprises the steps that a test control terminal builds an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator, so that the LTE system simulator, the LTE-V2X agent and the GNSS simulator build various V2X test scenes for testing a V3 interface or a V1 interface to carry out data transmission; the LTE-V2X agent is used for simulating an interactive terminal interacting with a V2X terminal to be tested through a PC5 interface;
constructing a hypertext transfer protocol (HTTP) data packet and/or a Packet Data Convergence Protocol (PDCP) data packet which needs to be transmitted through a V3 interface or a V1 interface, and transmitting and receiving messages with the V2X terminal to be tested based on various V2X test scenes; checking the HTTP data packet and/or the PDCP data packet fed back by the V2X terminal to be detected, and determining the behavior of the V2X terminal to be detected according to the checking result;
the test control terminal constructs an LTE-V2X test case, and sends various configuration parameters to an LTE system simulator, an LTE-V2X agent and a GNSS simulator, wherein the test control terminal comprises:
loading the test case constructed and compiled by the TTCN language, starting and executing the test case, and sending various configuration parameters in the test case to the LTE system simulator, the GNSS simulator and the LTE-V2X agent to construct various V2X test scenes; inspecting PDCP data packets and/or HTTP data packets transmitted between the V2X terminals to be tested based on the various V2X test scenes, and determining the behavior of the V2X terminals to be tested according to the inspection result;
generating a corresponding HTTP data packet, a PDCP data packet or an extensible markup language XML file according to the requirement of the TTCN test case, and reading and writing the node content in the XML file;
and performing message interaction based on the socket connection established between the test control terminal and the LTE system simulator, the V2X terminal to be tested, the GNSS simulator and the V2X terminal to be tested.
6. The method of claim 5, wherein the sending the various configuration parameters to an LTE system simulator, an LTE-V2X agent, a GNSS simulator comprises:
and sending the various configuration parameters to a test control terminal, an LTE system simulator and a GNSS simulator through an Ethernet port.
7. The method of claim 5, wherein sending various configuration parameters to the LTE system simulator, the LTE-V2X proxy, the GNSS simulator, and further comprising:
establishing control interfaces HTTP _ CTRL, HTTP _ Server ports and HTTP _ Client ports according to the various configuration parameters; the control interface HTTP _ CTRL is used for requesting the IP PTC to establish, modify or delete a corresponding routing table for the V2X service under a specific scene; the HTTP _ Server port is used for transmitting HTTP messages of which the network side is used as an HTTP Server; the HTTP _ Client port is used for transmitting HTTP information which serves as an HTTP Client side on the network side.
8. The method of claim 5 or 7, wherein sending various configuration parameters to an LTE system simulator, an LTE-V2X agent, a GNSS simulator comprises:
establishing a TCP socket connection with the GNSS simulator, converting the configuration message of the TTCN test case on the GNSS simulator into a character string type instruction, and enabling the GNSS simulator to execute corresponding actions;
establishing UDP socket connection with the LTE-V2X agent, issuing configuration information for setting an interactive terminal by a test case, and forwarding a configuration response message of the interactive terminal and a PDCP data packet of a PC5 interface of the V2X terminal to be tested; the interactive terminal is a terminal which is simulated by the LTE-V2X agent and performs PC5 interface data interaction with the V2X terminal to be tested;
establishing two UDP socket connections with the V2X terminal to be tested, connecting one socket with a simulation V3 interface according to an HTTP message issued by an IP PTC of the TTCN test case, and transmitting V2X pre-configuration and configuration change messages; connecting an analog V1 interface by using another socket, and transmitting a V2X service message; and sending and receiving HTTP data with the V2X terminal to be tested.
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