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Method and system for testing physical layer protocol conformance

A physical layer protocol and testing system technology, which is applied in the field of physical layer protocol conformance testing methods and systems, and can solve the problem that all physical layer scenarios cannot be automatically traversed, physical layer parameter definitions are difficult to reach consensus, and control modules are difficult to reach consensus requirements, etc. problems, to facilitate independent development and testing, facilitate quality and progress control, and avoid physical layer parameter coordination problems

Active Publication Date: 2017-05-17
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this test scheme is that it cannot automatically traverse all physical layer scenarios, and it is difficult for manufacturers to agree on the definition of physical layer parameters. Therefore, this method can only be used for internal self-testing of the company, and cannot be used as an industry physical layer consistency Test program
[0009] The second method: In order to flexibly test the physical layer and realize the flexible configuration test of various physical layer scenarios, a temporary control module is added on the basis of the physical layer, but this solution has a relatively large workload and involves various The physical layer implementation scheme, so it is difficult to reach a consensus on the control module among various manufacturers

Method used

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  • Method and system for testing physical layer protocol conformance
  • Method and system for testing physical layer protocol conformance
  • Method and system for testing physical layer protocol conformance

Examples

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Embodiment 1

[0091] In order to illustrate the application method of the invention in the conformance test in a specific system, a broadband power line carrier communication system (abbreviation: PLC) will be used for illustration. The PLC system is mainly composed of two types of equipment, that is, the central controller (referred to as: CCO) and the station (referred to as: STA). Since the PLC system network adopts a tree-shaped networking method, in addition to completing the functions of the station, some stations also It is necessary to have message forwarding and route maintenance functions, and this kind of site is called a proxy site (abbreviation: PCO). The physical layer design of the PCO and STA sites is exactly the same, and their differences are mainly in the data link layer and application layer, so in this embodiment, the physical layer test between the CCO and STA will be used for illustration. The following will focus on the physical layer consistency test method of the P...

Embodiment 2

[0117] The device under test is a common site scenario to illustrate that the consistency test is performed by the method of the present invention, and the process is as follows Figure 10 shown.

[0118] Step 1: The test equipment is set to the central controller mode, so the test equipment needs to plan the central beacon time slot, CSMA time slot and TDMA time slot transmission resources, and the test equipment periodically broadcasts on the central beacon time slot according to the central controller function Central beacon content. Such as Figure 10 step 1.

[0119]Step 2: The station equipment searches the content of the central beacon, and parses out the time slot allocation method of the frequency band, CSMA, and TDMA in the central beacon. Such as Figure 10 step 2.

[0120] Step 3: The test equipment selects a set of physical layer parameter groups, and generates preamble symbol data, SOF frame control frame symbol data, and SOF frame load symbol data, and sele...

Embodiment 3

[0131] The present invention is used for the method for carrying out PLC physical layer performance test, and concrete framework is as Figure 11 shown.

[0132] In the PLC physical layer performance test, a PLC channel simulator is added between the test equipment and the device under test. By controlling the PLC channel simulator, the channel environment of the PLC line can be changed, such as increasing Gaussian white noise, increasing signal attenuation, or It is to change the impedance of the PLC line, etc., to detect the physical layer performance index of the device under test.

[0133] In this embodiment, an example will be given to illustrate how to use the method of the present invention to test the minimum receiving sensitivity of the device under test. The specific test process is as Figure 12 shown.

[0134] The first step: the test begins to prepare the test equipment and the equipment under test, as well as the channel simulator that needs adjustable fading....

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Abstract

The invention relates to a method and system for testing physical layer protocol conformance and belongs to the technical field of communication. The method includes: testing equipment transmits a control data block and a load data block on a transmission resource, the control data block is transmitted through a fixed physical layer, the load data block is transmitted through specified load physical layer channel parameters in the control data block; after to-be-tested equipment receives the data, the control data block is analyzed first, the load physical layer channel parameters in the control data block are used to analyze out load data, and the received load data is returned to the testing equipment; the testing equipment checks whether transmitted load data is identical with the received load data or not, and whether the testing equipment meets the physical layer protocol requirements or not is judged. The method has the advantages that during testing, testing data loopback is only performed in the physical layer, the testing flow is simplified, and different physical layer functions can be traversed easily.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a physical layer protocol consistency testing method and system. Background technique [0002] In a communication system, it is generally composed of a sending end, a receiving end, and a transmission environment, and information is transmitted in the transmission environment, that is, a transmission channel. The specific system schematic diagram is as follows figure 1 shown. [0003] In the field of mobile communication, various interoperability tests are generally required before communication equipment is put into use, the most common of which is conformance testing, which is specifically divided into protocol conformance testing, radio frequency conformance testing and radio resource management (RRM for short). ) conformance test. These tests are the most basic requirements to ensure that communication equipment provided by different manufacturers can be interconnec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L1/24
Inventor 段红光夏军郑建宏李玲欣
Owner CHONGQING UNIV OF POSTS & TELECOMM
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