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Packet data transmission link time-delay measuring unit, system and method

A technology for transmitting link and packet data, applied in the field of communication, can solve the problems of low measurement accuracy and easy to be affected by clock jitter, so as to achieve the effect of improving accuracy, reducing measurement errors and reducing requirements

Inactive Publication Date: 2009-09-16
彭方方
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Problems solved by technology

[0004] In order to solve the problems of low measurement accuracy and being easily affected by clock jitter in the prior art, a packet data transmission link delay measurement unit, system, and method are proposed

Method used

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  • Packet data transmission link time-delay measuring unit, system and method
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  • Packet data transmission link time-delay measuring unit, system and method

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Embodiment Construction

[0026] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0027] The packet data transmission link delay measurement system proposed by the present invention is as attached figure 1 As shown, it includes: a data sending end 101 , a data receiving end 103 , and a measuring unit 104 , and the object of measurement is the loop delay of the transmission link 102 .

[0028] The data sending end 101 is connected to the data receiving end 103 through the transmission link 102 , and the measurement unit 104 is connected between the data sending end 101 and the transmission link 102 . The data receiving end 103 can receive the packet data sent via the transmission link 102. When performing measurement, the packet data received by the data receiving end 103 includes: the measurement frame injected by the measurement unit 104 through the data sending link and the data sending end 101 For the sent packet data, the data r...

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Abstract

The invention discloses packet data transmission link time-delay measuring unit, a system and a method; and the average loop time delay of a transmission link is calculated by making a loop for measuring frame vibration on the transmission link and measuring the flow of a measuring frame. As the invention converts measurement on time-delay quantity into measurement on the flow, and the measurement on the flow only needs a clock which is relatively stable for a long time, the requirement of the measurement on the clock is greatly reduced. In order to improve measurement precision, measurement error can be greatly reduced by only simply improving time interval for measuring the flow.

Description

technical field [0001] The present invention relates to communication technology, more specifically, a device and a processing method for calculating the time delay of a transmission loop based on a data frame transmission link. Background technique [0002] Latency is one of the inherent properties of communication networks and a basic indicator for evaluating network performance. Latency measurement has a wide range of applications in performance monitoring, behavior analysis, application design and other fields, and it is also the basis for measuring other performance indicators. The network is divided into loop delay and one-way delay. [0003] The current loop delay measurement method requires an accurate clock to measure the link delay by means of timers and time stamps. The traditional method is to send test data at the source end, start a timer, and set the loopback path of test data at the destination end. When the test data reaches the destination node and return...

Claims

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Application Information

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IPC IPC(8): H04L12/26
Inventor 宋臻宇
Owner 彭方方
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