Primary/Standby Judgment Method for Passive Optical Networks

Abstract

The invention provides an active / standby judging method for a passive optical network, and is used for judging an active optical interface and a standby optical interface in optical link protection of the passive optical network. The method comprises the following steps: receiving an optical link protection instruction by using an optical circuit terminal, determining a protection group and detecting a scene state; acquiring corresponding parameter information of an optical link in the protection group according to the detected scene state; calculating the active preferred value of each optical interface according to corresponding obtained parameter information, and selecting the active optical interface and the standby optical interface according to a calculated result; updating the active preferred value of each optical interface in the protection group in real time according to the state change of the optical link, and selecting the active optical interface and the standby optical interface according to the practical state of the link. In the method, during selection of the active optical interface and the standby optical interface, the active preferred value is calculated according to corresponding parameter change of the practical state of the link to select a most appropriate and stable active optical link, so that optical link switching times are reduced to the maximum extent, and safe and reliable optical link communication is provided.

Description

technical field [0001] The invention relates to passive optical network technology, in particular to a primary and standby judgment method of a passive optical network. Background technique [0002] At present, Passive Optical Network (PON) technology is a broadband optical access technology based on optical fiber. The optical network system consists of Optical Line Terminal (OLT), Optical Distribution Network (ODN) and Optical Network Unit (OpticalNetworkUnit, ONU). ), because the PON system has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces, most operators use this technology to achieve broadband and comprehensive transformation of access network services. It has been widely deployed and obtained a large number of user experience. When optical link protection is used to provide optical link reliability in a passive optical network system, the selection of the active optical link is very important. [0003] However, syste...

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Problems solved by technology

[0003] However, systems that generally support optical link protection only implement this function. When the optical link protection function is enabled, user services are interrupted, and during use, insufficient consideration is given to the selection conditions of the main and backup optical interfaces. The repeated switching of the main and backup optical interfaces of the system makes the system support the business intermittently, resulting in the user's data security not being effectively guaranteed

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