Authentication method and system of optical network unit

Abstract

The invention discloses an authentication method and system of an optical network unit. The method comprises the following steps: a telecommunications service operation support system initially authenticates the optical network unit according to initial authentication information; after the optical network unit passes the initial authentication, an optical line terminal matches the optical network unit; the optical line terminal detects the distance between the optical network unit and a corresponding optical line terminal PON (Passive Optical Network) interface so as to obtain a reference distance; and the practical distance between the optical network unit and the corresponding optical line terminal PON interface is measured, and the practical distance is compared with the reference distance so as to authenticate the legality of the optical network unit. Matching judgment and accurate distance measurement are performed on the received initial authentication information by the telecommunications service operation support system, so that the requirement on automatic registration is met once the optical network unit is pulled in, installation efficiency is improved, network access security is enhanced, and quick and reliable authentication of the optical network unit is realized.

Description

technical field [0001] The invention relates to the technical field of passive optical communication, in particular to an authentication method and system for an optical network unit (ONU, Optical Network Unit). Background technique [0002] With the rapid development of communication technology, the competition of telecommunication services is becoming increasingly fierce; the existing broadband access construction mode based on Asymmetric Digital Subscriber Line (ADSL, Asymmetric Digital Subscriber Line) technology and copper cable as the transmission medium will not be able to adapt Future demands for high-speed bandwidth services such as high-definition video and security monitoring. As an effective measure to implement network transformation and fixed-line broadband, "fiber-in and copper-out" will play an important role in increasing access bandwidth, improving network support for services, and enhancing operators' core competitiveness. As a new technology of access ne...

AI Technical Summary

Problems solved by technology

In this authentication method, the authentication of the ONU mainly depends on the distance from the ONU to the OLT; if the distances from the two ONUs to the OLT are approximately equal, the authentication method will fail, especially in "1:32", "1:64" , even in the case of a large branch ratio such as "1:128", it is very difficult for operators to plan, construct, and operate to ensure that the distance difference between each ONU and OLT in a PON system is greater than the specified threshold; In addition, if illegal users increase or decrease the length of a section of optical cable, they can easily steal the rights of other users and access the Internet illegally. Therefore, the security and practicability of this authentication method are also poor.

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