Method and system for detecting line quality problems of broadband access network

A broadband access network and line quality technology, applied to the detection of line quality problems in broadband access networks, and in the field of detection systems for line quality problems in broadband access networks

Inactive Publication Date: 2014-02-19
DEKSCOM TECH
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Problems solved by technology

From this example, we can see that there is no IP packet loss on the IP core network side, but two IP packets are lost due to the problem of the access network line, which causes TCP retransmission, so it can be detected at the core network detection point 2 TCP repeat packets

Method used

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  • Method and system for detecting line quality problems of broadband access network
  • Method and system for detecting line quality problems of broadband access network

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Embodiment 1

[0030] see figure 2 , the present invention discloses a detection method for a broadband access network line quality problem, the detection method comprising the following steps:

[0031] [Step S1] capture the Internet access data of broadband users in the core layer or aggregation layer link of the IP MAN by the collection device;

[0032] [Step S2] Track the TCP data flow of each broadband user, count the total number of TCP packets A and the number of TCP repeated packets B of each user, and calculate the TCP repeated packet rate Nr=B / A, and then record the IP address of each broadband user Correspondence between address and Nr.

[0033] The TCP duplicate packet statistics rule is: within a certain period of time, if two or more TCP packets with the same sequence number appear in the same TCP flow, the TCP packets that appear later will be counted as TCP duplicate packets.

[0034] [Step S3] check the TCP repeat packet rate Nr of each broadband user, if Nr>Tr, then recor...

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Abstract

The invention discloses a method and system for detecting line quality problems of a broadband access network. The detection method includes the following steps that on-line data packs of broadband users are captured on links of a kernel layer or a convergence layer of an IP metropolitan area network through collection equipment; TCP data streams of each broadband user are tracked, the TCP pack total number A and the TCP repeated pack number B of each user are calculated, the TCP repeated pack rate Nr which is equal to the result that A is divided by B is calculated, and then the corresponding relationship between IP addresses of the broadband users and the Nr is recorded; the TCP repeated pack rate Nr of each broadband user is checked, if Nr is larger than Tr, the IP address of the corresponding user is recorded in an abnormal line user database, and otherwise, the IP address of the corresponding user is recorded in a normal line user database; Tr is a set threshold of the TCP repeated pack rate; the IP addresses of all users of the abnormal line user database are output. According to the method and system, the TCP repeated pack rate of each broadband user is calculated, and accordingly the broadband user whose broadband access line has quality problems is found.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a method for detecting line quality, in particular to a method for detecting line quality problems of a broadband access network; meanwhile, the invention also discloses a detection system for line quality problems of a broadband access network. Background technique [0002] In recent years, with the rapid development of the Internet and its applications, the number of broadband users has shown a rapid growth trend, and various broadband access network technologies (such as xDSL, FTTx, LAN, Cable Modem, EoC) have emerged in an endless stream. Due to the large number of broadband user lines and the different characteristics of various broadband access technologies, this poses a great challenge to the network maintenance work of telecom operators. complaint. [0003] On the other hand, with the advancement of the integration of the three networks, the competition among...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L1/18H04L12/28
Inventor 吴雪波
Owner DEKSCOM TECH
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