Method and device, system and signaling receiver for detecting signaling time accuracy

Abstract

The invention discloses a method, a device and a system for testing accuracy of accuracy of signaling time, and a signaling receiver. The method comprises: receiving signaling, signaling time information, and clock counter information of a to-be-tested device via a drive test; receiving signaling and signaling time information output by an opposite terminal performing signaling interaction with the to-be-tested device; obtaining relative time, corresponding to the clock counter information of the same signaling, of the to-be-tested device, and absolute time, in the signaling time information of the output signaling of the to-be-tested device, of drive test treatment; ranking each signaling according to the first and last relative time of the to-be-tested device; searching the same signaling output by the opposite terminal according to the ranked signaling to form another ordering; taking one set signaling, in the ordering of the relative time of the to-be-tested device, as a standard, and calculating first time differences of the other signaling and the set signaling in the two kinds of ordering; determining a second time difference of each signaling according to the corresponding first time difference; and determining an accuracy index of the signaling time of the to-be-tested device according to the second time difference.

Description

technical field [0001] The invention relates to signaling time detection technology, in particular to a method, device, system and signaling receiver for detecting the accuracy of signaling time. Background technique [0002] The long-term evolution system (LTE, Long Term Evolution) has a flat network architecture, and the traditional Abis / Iub interface disappears. The signaling monitoring and optimization method based on the Abis / Iub interface cannot continue to be used in 4G. It is necessary to introduce signaling soft acquisition technology, namely The master device outputs all the original signaling passing through this device. In the process of verifying the signaling function of soft sampling, the time accuracy of signaling is an important inspection index. To ensure that the signaling output by the device is not lost or out of order, it is necessary to compare it with the timestamp of the original signaling one by one to see if there is a time error. Considering tha...

AI Technical Summary

Problems solved by technology

However, the time accuracy of the original signaling in the existing scheme is difficult to meet the requirements for two reasons:

[0004] 1. The recorded clock source of the drive test application is the local time of the PC on which the application is installed. Even if it is synchronized with the base station through an NTP server or GPS, it is limited by the response delay of the USB serial port where the PC receives the clock signal. The accuracy can only reach 50-100 milliseconds, and it is impossible to achieve millisecond-level accuracy;

[0005] 2. There is a processing delay caused by process queue waiting inside the drive test application, and it is impossible to stamp the current timestamp on the terminal interactive signaling in real time. There is a problem that the timestamps of several adjacent signaling are exactly the same, and the error is about 30-50ms

[0006] Based on the above reasons, it is difficult for the existing technical solutions to obtain the real occurrence time of the original signaling. It can only support time accuracy verification with tens of milliseconds or even hundreds of milliseconds precision, and it is difficult to detect the out-of-order signaling of the acquisition device and other time accuracy. sexual problems

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