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Method for evaluating the bandwith of a digital link

A bandwidth, digital data packet technology, applied in the field of communication, can solve the problem of high cost

Inactive Publication Date: 2006-04-12
ACTERNA IPMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, this method is more accurate, but it is expensive due to the need to use a high-precision time measurement system at each end of the network, for example, a GPS (Global Positioning System) type transmission system

Method used

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  • Method for evaluating the bandwith of a digital link
  • Method for evaluating the bandwith of a digital link
  • Method for evaluating the bandwith of a digital link

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0039] The present invention implemented in the Internet will be described below.

[0040] figure 1 It is respectively connected between the first terminal A and the second terminal B of the first local network 2 and the second local network 4, and according to the TCP (Transmission Control Protocol) mode or according to UDP (User Datagram Protocol) through the first sub A schematic diagram of a bi-directional digital link 1 for exchanging digital data packets through a network 6 and a second sub-network 8. First and second modules (10, 12) for marking packets sent by terminal A (B, respectively) and modules (14, 16) for analyzing packets received by terminal A (B, respectively) data packets, these modules are at each end of the digital link 1 between terminals A and B respectively.

[0041] figure 2 Shown is a block diagram of analysis modules according to a preferred embodiment, including adaptation interface 20, module 24, module 26, module 28, memory 30, module 32, sel...

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PUM

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Abstract

The invention relates to a method for evaluating bandwidth between a first point and a second point exchanging packets of digital data in a telecommunication network comprising a plurality of sub-networks. The inventive method comprises the following steps for each direction of transmission via one of said sub-networks: association of a same identifier to packets emitted in a quasi-simultaneous manner; time dating and recording of the packets received; identification and sorting of packets received with the same identifier; selection of a whole number m of groups of packets having the same identifier; measurement of the time intervals separating the moments of reception of emitted packets by the second point; calculation of bandwith according to the number of packets of groups selected and the total duration of transmission of said packets.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for evaluating the bandwidth between a first point and a second point for exchanging data packets via a digital link in a communication network comprising a plurality of sub-networks. [0002] The invention also relates to a device for applying the method. [0003] The present invention can be applied in communication networks such as the Internet. Background technique [0004] A known method for evaluating bandwidth in a communication network consists in sending a file including a time stamp via FTP (File Transfer Protocol) from a first point in the network and using a second point of said network to measure the reception of this file s speed. Sending large-capacity files via FTP over the link causes network overload. Furthermore, since the load generated by users in the network is unknown at the moment of measurement, transferring small files via FTP does not guarantee ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/0896H04L43/0882H04L12/24H04L43/0852H04L41/00H04L47/70
Inventor 让·施密特多米尼克·勒福尔波格丹·吉塔
Owner ACTERNA IPMS