Method for testing consistency of police digital cluster air interface

Abstract

The invention relates to a method for testing the consistency of a police digital cluster air interface. The method comprises the steps: S1, building a police digital cluster air interface consistencytesting system; S2, acquiring a control channel data burst from an air interface of a test system by using a radio frequency module of a PDT protocol analyzer; S3, demodulating the control channel data burst through an FPGA module; S4, carrying out channel decoding of the demodulated control channel data burst by using a DSP module, and obtaining the data type and the message of control signaling; S5, judging whether the control signaling needs to be compared or not by utilizing an ARM module according to the data type and the message of the control signaling: continuing to execute step S6 ifthe control signaling needs to be compared, or else returning to execute step S2; S6, comparing the control signaling required to be compared with related standards of a police digital cluster communication system, and storing a comparison result of the control signaling; S7, repeatedly executing the steps S2 to S6 until the control signaling is completely compared; S8, summarizing comparison results, and storing and outputting a final test result.

Description

technical field [0001] The invention belongs to the field of digital trunking communication, in particular to a method for testing the air interface consistency of police digital trunking (PDT). Background technique [0002] "GA / T 1367-2017 Police Digital Trunking (PDT) Communication System Functional Test Method" is a part of the PDT standard system, which specifies the test environment, test conditions and test conditions for the police digital trunking (PDT) communication system functional test The method aims to detect whether the function of the PDT device is complete and whether the air interface protocol is consistent. [0003] In the digital trunking communication system, the air interface consistency test of the equipment can standardize the functional technical indicators of the equipment, and solve the problems of equipment compatibility and protocol consistency of different manufacturers. At present, domestic PDT manufacturers have developed a packet capture too...

AI Technical Summary

Problems solved by technology

This packet capture tool can capture, analyze and record the air interface signaling of the PDT system, but it can only realize the air interface protocol consistency comparison function in the laboratory environment through manual or program scripts, so This method cannot adapt to the test environment of PDT system with multiple base stations and multiple carriers

If the air interface consistency test method of the public mobile communication system (such as GSM, TD-SCDMA, and LTE, etc.) is used, the huge difference between different communication protocols needs to be considered, and the original test method needs to be modified a lot

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