Method of distributing wavelength channels in passive optical network, optical line terminal and system

Abstract

The invention discloses a method of distributing wavelength channels in a passive optical network. The method comprises steps that an optical line terminal obtains preset wavelength channel priority information and optical network unit priority information; and the wavelength channel priority information and the optical network unit priority information are sent to each optical network unit, so that each optical network unit can select to access a corresponding wavelength channel according to preset rules in dependent on the wavelength channel priority information and the optical network unit priority information. The invention also discloses an optical line terminal and a system of distributing wavelength channels in a passive optical network. Each optical network unit can selectively access a corresponding wavelength channel according to own priority information and wavelength channel priority information.

Description

technical field [0001] The invention relates to the technical field of passive optical fiber networks, in particular to a method for allocating wavelength channels in a passive optical fiber network, an optical line terminal and a system. Background technique [0002] In the field of Passive Optical Network (PON) technology, multiple wavelength channels can be aggregated by each PON port through wavelength division multiplexing, and the optical network unit (ONU) can select the wavelength channel for registration. Thus, greater bandwidth is provided to users, such as NG-PON2 equipment and the like. When the optical network unit (ONU) registers and goes online, it needs to choose between multiple wavelength channels aggregated by the PON port. [0003] The allocation of wavelength channels in the existing passive optical fiber network is random, that is, there is no distinction between the optical line terminal (OLT) and the optical network unit (ONU) when selecting waveleng...

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Problems solved by technology

[0003] The allocation of wavelength channels in the existing passive optical fiber network is random, that is, there is no distinction between the optical line terminal (OLT) and the optical network unit (ONU) when selecting wavelength channels, and the selection of wavelength channels is random. In this way, for Some users with special needs, such as requiring the optical line terminal (OLT) to provide special service configurations for the optical network unit on a special wavelength channel, cannot use the wavelength channel selected by the optical network unit (ONU) because they cannot distinguish the wavelength channel If the optical network unit (ONU) selects a wavelength channel configured with a special service, it can only configure the corresponding service on all wavelength channels, resulting in a waste of resources

In the prior art, the optical network unit (ONU) cannot selectively access the corresponding wavelength channel

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