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A method for police digital trunking air interface consistency test

A police digital trunking and consistent technology, applied in the direction of digital transmission system, data exchange network, electrical components, etc., can solve the problem of not being able to adapt to the multi-base station and multi-carrier test environment of the PDT system

Active Publication Date: 2020-08-18
BEIJING JIAOTONG UNIV
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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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  • A method for police digital trunking air interface consistency test
  • A method for police digital trunking air interface consistency test
  • A method for police digital trunking air interface consistency test

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Embodiment Construction

[0044] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, whereby implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems and achieve technical effects, and according to the above-mentioned realization process, The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0045] figure 1 It is a block diagram of a PDT air interface conformance test system, and the test system includes: a PDT base station, a PDT terminal, a PDT dispatcher, and a PDT protocol analyzer. The PDT base station mainly provides functions such as access control and service management for th...

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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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04L12/26
CPCH04L43/18H04W24/08
Inventor 孙昕祖健文宋政育王俊
Owner BEIJING JIAOTONG UNIV
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