Method for measuring downlink packet loss rate of access link of broadband network user

Abstract

The invention discloses a method for measuring the downlink packet loss rate of an access link of a broadband network user. The method comprises the following steps: A. selecting any intermediate node between a server side and a client side as a measuring point; B. analyzing a TCP (transmission control protocol) message which is received by the measuring point and sent to the client side by the server side, carrying out statistics on heading information of the TCP message and predicating the serial number of the next TCP message to be received by the measuring point according to the serial number and effective load length information carried by the TCP message; and C. when the next TCP message is coming, comparing the serial number of the coming TCP message with the predicted serial number of the TCP message to judge whether packet loss happens and whether the link of the packet loss happens on the server side or client side access link, and finally obtaining the downlink packet loss rate index of the user. The method can acquire communication flow between the user and the Internet on any intermediate node of the local side, compute the downlink packet loss rate index of the access link of the user by analyzing the flow, and provide support means for operation, quality guarantee and fault diagnosis of the broadband network.

Description

[0001] technical field [0002] The invention relates to the technical field of a method for measuring packet loss rate in network communication, in particular to a method for measuring the downlink packet loss rate of a broadband network user access link based on flow analysis at any intermediate point. Background technique [0003] Telecom and other ISP operators provide Internet access services to the majority of users. The access methods include ADSL, fiber-to-campus (FTTB), fiber-to-the-home (FTTH), etc. Due to the high access bandwidth (generally 2-30Mbps), these The access network is generally called a broadband network, which means that users can enjoy better network service quality. However, in recent years, broadband network users have experienced poor Internet access quality, and complaints about performance and failures have increased. Due to the lack of testing and verification methods, a large number of users have doubts about "fake broadband", and ISP operat...

AI Technical Summary

Problems solved by technology

[0011] Both of the above two methods require the cooperation of user-side equipment or software, making measurement and deployment difficult

Moreover, only one user's measurement data can be obtained at a time, and it is difficult to concurrently measure the downlink packet loss rate of multiple users

More importantly, device-based statistics are often inaccurate and cannot truly reflect downlink quality

Images