CN114268982A - Vehicle-mounted mobile communication terminal test system - Google Patents
Vehicle-mounted mobile communication terminal test system Download PDFInfo
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- CN114268982A CN114268982A CN202111448287.0A CN202111448287A CN114268982A CN 114268982 A CN114268982 A CN 114268982A CN 202111448287 A CN202111448287 A CN 202111448287A CN 114268982 A CN114268982 A CN 114268982A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a vehicle-mounted mobile communication terminal test system, which comprises: the core network unit is used for providing connection of the tested equipment, management of the tested equipment and bearing of the service, and is used as a bearing network to provide an interface to an external network; the base station unit is used for receiving the digital signals of the core network unit, converting the digital signals into radio frequency signals, transmitting the radio frequency signals to the external signal controller unit in a downlink mode, receiving the radio frequency signals of the external signal controller unit, converting the radio frequency signals into the digital signals, and transmitting the digital signals to the core network unit in an uplink mode; the external signal controller unit is used for receiving the base station unit signal, carrying out signal conversion and carrying out downlink transmission to the antenna unit so as to simulate multipath effect, Doppler effect and the like of the urban environment; and the network management unit is used for coordinating and/or adjusting the behavior of the base station unit in the network. The invention effectively improves the testing efficiency of the mobile communication network, shortens the testing time, has lower comprehensive testing cost and more comprehensive coverage on the testing result.
Description
Technical Field
The invention relates to the technical field of terminal testing, in particular to a vehicle-mounted mobile communication terminal testing system.
Background
In the existing internet automobile, the vehicle-mounted mobile communication terminal rarely or hardly carries out comprehensive communication performance evaluation. Generally, the evaluation method is to perform a road test simulating a user use scene after the vehicle-mounted mobile communication terminal parts are mounted on a vehicle. The method has two major disadvantages, one is that the test needs to consume excessive whole vehicle resources, human resources and test time, and the cost of project development is high; secondly, the coverage of the test network is not complete, for example, in a certain test area, a base station operated by a certain mobile communication operator is generally a certain specific frequency band, which results in that a large amount of manpower and material resources are spent for testing, and finally, all possible network environments are not covered.
For example, the invention patent with publication number CN100401824C discloses a mobile communication network testing system and method, comprising a base station controller and a base station, and further comprising a network coverage measuring server and a mobile station, wherein the network coverage measuring server is used for controlling the testing process through the base station controller and the base station, receiving the testing data reported by the base station controller and calculating the network coverage effect, and the mobile station is used for acquiring the testing data and reporting to the network coverage measuring server through the base station and the base station controller. The invention mainly researches a test method aiming at a mobile communication network, and cannot be used for carrying out comprehensive test evaluation on a mobile communication terminal.
For example, the invention patent with publication number CN110048908A discloses a network test platform, a network test method and a device, wherein the network platform includes: the client is used for acquiring configuration information from the page management module; the network server is connected with at least one client and used for being connected with the at least one client according to the configuration information and testing the at least one client by executing any one or more of the following operations; network parameter control, flow statistics and information capture; and the control server is connected with the network server and used for controlling at least one client of the network server to perform network test. The network test platform aims to solve the technical problem that the existing network test platform needs to be provided with peripheral software, so that the network test cost is high, and the terminal, particularly a vehicle-mounted mobile terminal, cannot be evaluated and tested.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a vehicle-mounted mobile communication terminal test system which has higher test efficiency of a mobile communication network, shorter time, lower comprehensive test cost and more comprehensive test result coverage.
In order to solve the technical problems, the invention adopts the following technical scheme:
a vehicle-mounted mobile communication terminal test system includes:
the core network unit is used for providing connection of the tested equipment, management of the tested equipment and bearing of the service, and is used as a bearing network to provide an interface to an external network;
the base station unit is used for receiving the digital signals of the core network unit, converting the digital signals into radio frequency signals, transmitting the radio frequency signals to the external signal controller unit in a downlink mode, receiving the radio frequency signals of the external signal controller unit, converting the radio frequency signals into the digital signals, and transmitting the digital signals to the core network unit in an uplink mode;
the external signal controller unit is used for receiving the base station unit signal, carrying out signal conversion and carrying out downlink transmission to the antenna unit so as to simulate multipath effect, Doppler effect and the like of the urban environment;
a network management unit for coordinating and/or adjusting the behavior of base station units in the network;
and the antenna unit is used for transmitting the downlink signal of the external signal controller unit to the space environment where the tested equipment is located, receiving the uplink signal of the tested equipment and transmitting the uplink signal to the external signal controller unit.
Further, the network management unit issues the coordination and/or adjustment command to the base station unit through the core network unit.
Further, one or more network management units are connected with the base station unit through a network cable or a bus so as to perform configuration management on the base station unit.
Further, the core network unit includes one or more of a 5G core network, a 4G core network, a 3G core network, and a 2G core network.
Further, the base station unit comprises one or more of a 5G base station, a 4G base station, a 3G base station and a 2G base station.
Further, the external signal controller unit is an attenuator or a channel simulator.
Furthermore, the device further comprises a shielding room which is used for isolating the tested device and the antenna unit from external wireless communication signals and preventing the test result from being influenced by random unknown signals.
The present invention also provides an electronic device comprising: the processor executes the program on the memory to carry out the information interaction control and the information storage of the terminal test system.
Compared with the prior art, the invention has the beneficial effects that:
the radio frequency signal of one base station unit is closed or attenuated by the external signal controller unit according to a certain mode and normally passes through or is amplified to pass through the radio frequency signal of the other base station unit, so that scene simulation of connection state interoperation, idle state interoperation and the like is realized. The external signal controller unit can also generate Doppler frequency shift, multipath and other effects by converting the radio frequency signal, and can realize scene simulation of urban canyon, valley signal fading, rapid movement and the like. And the downlink signal of the external signal controller unit is transmitted to the space environment where the tested equipment is located through the antenna unit. Therefore, the testing efficiency of the mobile communication network is effectively improved, the testing time is shortened, the comprehensive testing cost is lower, and the coverage on the testing result is more comprehensive.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the overall structure of a vehicle-mounted mobile communication terminal testing system according to the present invention;
fig. 2 is a schematic diagram of a core network element in the present invention;
FIG. 3 is a schematic diagram of a base station unit of the present invention;
FIG. 4 is a schematic diagram of an external signal controller unit according to the present invention;
fig. 5 is a schematic diagram of an antenna unit according to the present invention.
In the figure: the system comprises a core network unit 11, a base station unit 12, an external signal controller unit 13, an antenna unit 14, a tested device 15, a shielding room 16 and a network management unit 17.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a vehicle-mounted mobile communication terminal testing system in this embodiment includes:
the core network unit 11 is configured to provide connection of the device under test 15, management of the device under test, and bearer completion of the service, and provide an interface to an external network as a bearer network.
And the base station unit 12 is configured to receive the digital signal of the core network unit, perform processing such as modulation to form a radio frequency signal, and transmit the radio frequency signal to the external signal controller unit in a downlink manner. Correspondingly, for uplink signal transmission, the base station unit receives the radio frequency signal of the external signal controller unit, and forms a digital signal through processing such as demodulation and the like, and the digital signal is transmitted to the core network unit in an uplink mode.
And the external signal controller unit 13 is used for receiving the base station unit signal, performing signal conversion, and performing downlink transmission to the antenna unit so as to simulate multipath effect, Doppler effect and the like of the urban environment.
A network management unit 17 for coordinating and/or adjusting the behavior of the base station units in the network, which may be a physical entity or simply a virtual entity. The coordination and/or adjustment instruction of the network management unit to the base station unit needs to be issued through the core network unit.
And the antenna unit 14 is configured to transmit the downlink signal of the external signal controller unit to a space environment where the device under test is located, receive the uplink signal of the device under test, and transmit the uplink signal to the external signal controller unit.
In the invention, the network management unit 17 sends related data and other information to the core network unit 11, the core network unit transmits the network management unit data and other information to the uniquely corresponding base station unit 12 according to the registered network information of the tested equipment, the base station unit receives the data and other information of the core network unit, the radio frequency signal is formed through modulation and other processing, and the radio frequency signal is transmitted to the external signal controller unit 13 in a downlink manner. The external signal controller unit is connected to a plurality of base station units in an upper direction and a plurality of antenna units in a lower direction, and the antenna unit 14 efficiently transmits a downlink signal of the external signal controller unit to a spatial environment in which the device under test 15 is located. The external signal controller unit can close or attenuate the radio frequency signal of one base station unit according to a certain mode and normally pass or amplify the radio frequency signal passing through another base station unit, so as to realize scene simulation of connection state interoperation, idle state interoperation and the like. The external signal controller unit can also generate Doppler frequency shift, multipath and other effects by converting the radio frequency signal, and can realize scene simulation of urban canyon, valley signal fading, rapid movement and the like. Conversely, the received rf signal of the antenna unit is processed in a similar reverse direction by the external signal controller unit and then transmitted back to the base station unit. The base station unit receives the radio frequency signal of the external signal controller unit, forms a digital signal through demodulation and other processing, and transmits uplink transmission to the network management unit through the core network unit. Therefore, the testing efficiency of the mobile communication network is effectively improved, the testing time is shortened, the comprehensive testing cost is lower, and the coverage on the testing result is more comprehensive.
Specifically, according to the information transmission rate requirement, the network management unit 17 is connected with the core network unit 11 through ethernet, USB, optical fiber, etc., the core network unit 11 is connected with the base station unit 12 through ethernet, USB, optical fiber, etc., and the base station unit 12 is connected with the external signal controller unit 13 through a radio frequency line; the external signal controller unit 13 is connected to the antenna unit 14 through a radio frequency line.
Specifically, the number of the network management units 17 may be one or more, and the network management units are connected to the core network unit through network cables or buses, and configured and managed by issuing instructions to the base station unit through the core network unit; the network management unit can also be used as a local server to realize the storage of data information and the running of test application.
Specifically, the core network unit 11 includes one or more of a 5G core network, a 4G core network, a 3G core network, and a 2G core network.
Specifically, the base station unit 12 includes one or more of a 5G base station, a 4G base station, a 3G base station, and a 2G base station. The 5G base station comprises one or more frequency bands in 5G frequency bands such as N78, N79, N41 and the like; the 4G base station comprises one or more of 4G frequency BANDs such as LTE BAND1, LTE BAND3, LTE BAND8, LTE BAND38 and LTE BAND 39; the 3G base station comprises one or more frequency BANDs in 3G frequency BANDs such as WCDMA BAND1, WCDMA BAND3 and the like; the 2G base station comprises one or more frequency bands in 2G frequency bands such as EGSM, DCS, PCS and the like.
Referring to fig. 2, the test system may be configured to implement information transmission of a single core network, implement information transmission between different core networks through an ethernet or an optical fiber, and implement information transmission between a device under test and an external public network through an ethernet or an optical fiber interface.
Referring to fig. 2 and fig. 3, the topology relationship between the core network unit and the base station unit is: each core network in the core network unit is connected with one or more base stations in the base station unit through an Ethernet or an optical fiber, and each base station in the base station unit is connected with only one core network in the core network unit.
Referring to fig. 3 and 4, the topological relationship between the base station unit and the external signal controller unit is as follows: according to practical application, one external signal controller in the external signal controller unit can be connected with one base station radio frequency output port through one radio frequency line, generally, the external signal controller has a plurality of channels, each channel can be connected with each base station channel, for 4G or 5G base stations, a plurality of receiving and transmitting channels also exist, and the receiving and transmitting channels are respectively and correspondingly connected with the external controller according to requirements.
Specifically, the external signal controller unit 13 can be simplified to an attenuator requiring manual control, or can be an automated instrument. For example: a channel simulator.
Referring to fig. 4 and 5, the topological relationship between the external signal control unit and the antenna unit is as follows: the output channel of each external signal controller in the external signal control unit is connected with one antenna in the antenna unit through a radio frequency line. In order to avoid excessive signal loss, the connection relationship between the external signal controller unit and the base station unit and the connection relationship between the antenna unit and the external signal controller unit need to satisfy specific conditions, that is, the working frequency band of the base station is adapted to the working frequency range of the antenna.
As a preferred scheme, the terminal testing system further includes a shielding room 16/shielding box, where the antenna unit and the device under test are placed in the shielding room/shielding box, and are used to isolate the device under test and the antenna unit from external wireless communication signals, and eliminate external random and uncontrollable wireless communication signal interference, so that the testing data of the terminal testing system is more stable and controllable, and the validity of the testing data is ensured.
The present invention also provides an electronic device comprising: the terminal testing system comprises a processor, a display and a memory storing computer programs, wherein the processor executes the information interaction control, the information storage and the like of the terminal testing system by the programs on the memory. The processor and the memory are connected through a bus or an interface. The electronic device may be the network management unit.
Finally, it is noted that the above embodiments are merely intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein. All obvious changes which are introduced by the technical solution of the invention are still within the protective scope of the invention.
Claims (8)
1. A vehicle-mounted mobile communication terminal test system is characterized by comprising:
the core network unit is used for providing connection of the tested equipment, management of the tested equipment and bearing of the service, and is used as a bearing network to provide an interface to an external network;
the base station unit is used for receiving the digital signals of the core network unit, converting the digital signals into radio frequency signals, transmitting the radio frequency signals to the external signal controller unit in a downlink mode, receiving the radio frequency signals of the external signal controller unit, converting the radio frequency signals into the digital signals, and transmitting the digital signals to the core network unit in an uplink mode;
the external signal controller unit is used for receiving the base station unit signal, carrying out signal conversion and carrying out downlink transmission to the antenna unit so as to simulate the multipath effect and the Doppler effect of the urban environment;
a network management unit for coordinating and/or adjusting the behavior of base station units in the network;
and the antenna unit is used for transmitting the downlink signal of the external signal controller unit to the space environment where the tested equipment is located, receiving the uplink signal of the tested equipment and transmitting the uplink signal to the external signal controller unit.
2. The system of claim 1, wherein the network management unit issues the coordination and/or adjustment command to the base station unit via the core network unit.
3. The system of claim 2, wherein one or more network management units are connected to the base station unit via a network cable or a bus to perform configuration management on the base station unit.
4. The system of claim 1, wherein the core network unit comprises one or more of a 5G core network, a 4G core network, a 3G core network, and a 2G core network.
5. The system of claim 1, wherein the base station unit comprises one or more of a 5G base station, a 4G base station, a 3G base station, and a 2G base station.
6. The vehicle-mounted mobile communication terminal test system according to claim 1, wherein the external signal controller unit is an attenuator or a channel simulator.
7. The vehicle-mounted mobile communication terminal test system according to claim 1, further comprising a shielding room for isolating the tested device and the antenna unit from external wireless communication signals and preventing the test result from being affected by random unknown signals.
8. An electronic device, comprising: a processor, a display and a memory storing computer programs, wherein the processor executes the information interaction control and information storage of the terminal test system of claim 1 by the programs on the memory.
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| CN114866449A (en) * | 2022-04-29 | 2022-08-05 | 重庆长安汽车股份有限公司 | Finished automobile wireless communication test system and test method thereof |
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