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Self-adapted method for detecting the clock resetting based on the mode recognition

An adaptive detection and pattern recognition technology, applied in the direction of error detection/prevention using signal quality detectors, digital transmission systems, electrical components, etc., can solve application limitations and cannot adaptively detect multiple clock reset points or clocks Problems such as reset interval, inability to adaptively identify clock reset, etc.

Inactive Publication Date: 2009-01-07
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

From the foregoing analysis, it can be known that none of the existing clock reset detection techniques can adaptively identify two different clock resets, and some of them cannot adaptively detect multiple clock reset points or clock resets. range, so that the application of these methods in the measurement system of the communication network is greatly limited

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  • Self-adapted method for detecting the clock resetting based on the mode recognition
  • Self-adapted method for detecting the clock resetting based on the mode recognition
  • Self-adapted method for detecting the clock resetting based on the mode recognition

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] see image 3 , introducing the operation steps of the method for adaptively detecting clock reset based on pattern recognition of the present invention:

[0064] (1) Improve the maximum and minimum distance clustering algorithm in pattern recognition;

[0065] (2) Perform one-way time delay detection and obtain the measurement data set Ω={v i =(t i , d i )|i=1, 2, 3,..., N}, wherein, the natural number i is the measurement serial number, t i is the time stamp of the sending time of the source measurement host on the i-th measurement packet, d i To measure the original one-way delay measured by the host at the destination;

[0066] (3) Assuming that only one end of the host may reset the clock during the measurement process, adopt the improved maximum ...

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Abstract

A clock reset detection method based on Adaptive Pattern Recognition, the use of pattern recognition in the improvement of the largest minimum distance clustering algorithm on a one-way delay the processing of data clustering, respectively test for the adaptive re-adjustment methods and the clock rate adjustment means instantaneous value of two different types of time bell replacement, but also to determine the frequency of the clock reset. The main features of the present invention is smaller limitations: the only path forward for a one-way delay measurements to obtain the positive path of one-way delay the measurement data set, we can also use this method to complete adaptive detection and judgment of the two clock reset the type and frequency.

Description

technical field [0001] The invention relates to a method for detecting clock reset in network measurement, more precisely, relates to a method for self-adaptive detection of clock reset based on pattern recognition, and belongs to the technical field of delay measurement of communication networks. Background technique [0002] With the rapid expansion of the scale of the Internet and the increasingly complex network structure, network measurement has become an important means to study the characteristics of the Internet, evaluate and monitor the network. [0003] One-way delay is an important index in active network measurement to reflect the characteristics of network paths, influence and evaluate the end-to-end performance of the network, and it is also the basis for measuring other network performance indicators such as delay jitter and bandwidth. End-to-end one-way delay measurement is widely used in network performance monitoring, behavior analysis and application desig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/24H04L1/20
Inventor 杨谈崔毅东金跃辉王洪波程时端焦利王文东阙喜戎龚向阳
Owner BEIJING UNIV OF POSTS & TELECOMM
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