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Communication network tester and test method for multi-communication standard signals

A communication network and communication standard technology, which is applied in the field of communication network tester and multi-communication standard signal testing, can solve the problems of cumbersome testing and decreased test efficiency, and achieve the effect of improving test efficiency and reducing test complexity

Active Publication Date: 2021-05-18
TRANSCOM INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional network optimization test equipment usually supports one or several types of existing communications. Switching between different communication systems requires disconnection and reloading. Not only is the test cumbersome, but the test efficiency is reduced. Therefore, a device that supports multiple communications is developed. Standard parallel measurement, especially network optimization test equipment that can support the current rapid development of NB-IoT and EMTC, is imperative

Method used

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  • Communication network tester and test method for multi-communication standard signals
  • Communication network tester and test method for multi-communication standard signals
  • Communication network tester and test method for multi-communication standard signals

Examples

Experimental program
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Effect test

Embodiment 1

[0054] figure 1 It is a schematic structural diagram of a communication network tester provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the communication network tester includes: a radio frequency amplifier circuit 110, a switch filter matrix 120, an intermediate frequency signal generation circuit 130, an intermediate frequency filter 140, a digital demodulation signal generation circuit 150, a processor circuit 160 and a local oscillator signal generation circuit 170, of which:

[0055] The radio frequency amplification circuit 110 is configured to receive and amplify signals of at least two communication systems in the surrounding environment, and transmit the amplified mixed received signal to the switch filter matrix 120 .

[0056] In this embodiment, the radio frequency amplifying circuit 110 includes a radio frequency antenna, which is used to simultaneously receive signals of different communication formats sent by different communication...

Embodiment 2

[0086] This embodiment is optimized on the basis of the above embodiments. In this embodiment, the mixed received signal is specifically composed of signals of NB-IoT standard, EMTC standard, LTE standard and GSM standard. Mixed received signals, and correspondingly designed a communication network tester suitable for synchronous testing of the above four communication standard signals, wherein, in figure 2 A schematic diagram of the circuit structure of a specific communication network tester in Embodiment 2 is shown in .

[0087] Such as figure 2 As shown, in the communication network tester of this embodiment, the radio frequency amplifying circuit includes: a radio frequency antenna, that is, an RF (Radio Frequency) antenna 210, and a third low noise amplifier connected to the radio frequency antenna, also That is, LNA (Low Noise Amplifier) ​​220, the output end of the third low noise amplifier is connected to the input end of the switch filter matrix 230;

[0088] The...

Embodiment 3

[0110] Figure 4It is a flow chart of a multi-communication standard signal testing method provided by Embodiment 3 of the present invention. This embodiment is applicable to the situation of testing multi-communication standard signals existing in the environment. This method can be implemented by a communication network tester Incoming first processor (typically, FPGA chip) executes. The method of this embodiment specifically includes the following steps:

[0111] S310. According to the number of communication systems selected for measurement, divide the setting execution cycle into test sub-cycles matching the number of communication systems.

[0112] In this embodiment, an execution cycle may be determined according to the execution speed of the first processor, for example: 1s or 2s. Then, according to the number of communication systems selected by the user, for example, 4, the above execution cycle can be divided into 4 test sub-cycles, for example, for the case where...

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Abstract

The embodiment of the invention discloses a communication network tester and a test method for multi-communication standard signals. The communication network tester includes: a radio frequency amplifier circuit, which is used to receive and amplify signals of different communication systems; a switch filter matrix, which is used to gate the corresponding signal path according to the gate signal corresponding to the current gate communication system; the intermediate frequency signal The generation circuit is used to mix the purely received signal to generate an intermediate frequency signal according to the first local oscillator; the intermediate frequency filter is used to perform intermediate frequency filtering on the intermediate frequency signal according to the filter parameters matching the current gating communication system; the digital demodulation signal The generation circuit is used to demodulate the intermediate frequency signal to generate a digital demodulation signal according to the second local oscillator; the processor circuit is used to analyze the digital demodulation signal to obtain a corresponding network test result. The communication network tester provided in this embodiment optimizes the existing multi-communication standard signal testing technology, reduces testing complexity and improves testing efficiency.

Description

technical field [0001] The embodiment of the present invention relates to circuit technology, in particular to a communication network tester and a test method for multi-communication standard signals. Background technique [0002] With the continuous development of communication technology, NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things), eMTC (enhanced Machine Type Communicatio, enhanced machine type communication system) continues to expand in scale, and network test instruments are increasingly popular in the industry. Especially operators are highly concerned. At present, in the case of the coexistence of multiple networks such as NB-IoT, EMTC, LTE (Long Term Evolution, and GSM (Global System for Mobile Communication, Global System for Mobile Communication), how to ensure the coexistence of various modes of networks, And it can achieve perfect network coverage, which puts forward higher requirements for operators. [0003] As an important part o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W24/02H04B17/30H04W16/18
Inventor 陈向民
Owner TRANSCOM INSTR