Method and system for dynamically updating maximum signal-to-noise ratio margin

Abstract

The invention discloses a method and a system for updating a maximum signal to noise ratio allowance dynamically. According to the method for updating the maximum signal to noise ratio allowance dynamically, an average packet loss probability of each line in preset time range is calculated; for each line, when the average packet loss probability of the line is larger than a packet loss probability threshold value, the current maximum signal to noise ratio allowance of a corresponding port of the line and a first preset value are added and used as the current maximum signal to noise ratio allowance of the corresponding port of the line; otherwise, the current maximum signal to noise ratio allowance of the corresponding port of the line minus a second preset value is used as the current maximum signal to noise ratio allowance of the corresponding port of the line; the current maximum signal to noise ratio allowance of the corresponding port of each line is sent to the corresponding port of each line; and the maximum signal to noise ratio allowance received by the corresponding port of each line is utilized for updating the current maximum signal to noise ratio allowance. Thus, the maximum signal to noise ratio allowance of a port of a network access facility can be updated dynamically, and expense of the network access facility can be saved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a system for dynamically updating the maximum signal-to-noise ratio margin. Background technique [0002] When the port of the network access device transmits signals to a user terminal such as a modem (MODEM), the transmission power of the transmitted data is calculated by using the parameters negotiated with the user terminal and the parameters configured by the port itself when the service is opened. The transmission power includes two parts, one part is the power required to actually carry the service, and the other part is the power margin, which is used to combat transmission interference. Wherein, the size of the power margin part mainly depends on the size of the maximum signal-to-noise ratio margin (MAXSNRM) in the port configuration parameters. At present, the maximum signal-to-noise ratio margin parameters of network access device ports are configured at the max...

AI Technical Summary

Problems solved by technology

With the evolution of fiber-to-copper exit, that is, to combine fiber access (Fiber To Thex, referred to as: FTTx) technology with asymmetric digital subscriber line (abbreviated: ADSL) technology, to replace copper wires with optical fibers, to shorten the distance as much as possible. The distance between the ADSL central office access equipment and the copper line of the user terminal is to provide high-bandwidth access. The broadband access transmission line environment is getting better and better. Most lines do not need to reserve too much anti-interference power margin. Therefore, configuring the maximum signal-to-noise ratio margin of the port according to the default maximum value will increase the overhead of network access devices.

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