Optical line terminal/optical network unit wavelength adjustment method and device

A technology of optical line terminal and wavelength adjustment, which is applied in the field of communication to achieve the effect of maintaining business continuity

Active Publication Date: 2015-08-12
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the existing TWDM PON standards and technology research, there is no effe

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  • Optical line terminal/optical network unit wavelength adjustment method and device
  • Optical line terminal/optical network unit wavelength adjustment method and device
  • Optical line terminal/optical network unit wavelength adjustment method and device

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[0039] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.

[0040] The first embodiment of the present invention provides a method for adjusting the wavelength of an optical line terminal, which can be applied to a source optical line terminal (OLT). figure 2 It is a flowchart of a method for adjusting wavelength of an optical line terminal according to the first embodiment of the present invention, such as figure 2 As shown, the method mainly includes the following steps (step S202-step S204):

[0041] Step S202, the source optical line terminal (OLT) sends an adjustment notification message to the target optical line terminal (OLT), where the adjustment notification message is used to instruct the optical network unit (ONU) to be adjusted to the t...

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Abstract

Provided are a wavelength adjustment method and device for an optical line terminal/optical network unit. The wavelength adjustment method for an optical line terminal comprises: sending, by a source optical line terminal (OLT), an adjustment notification message to a target optical line terminal (OLT), wherein the adjustment notification message is used for indicating that an optical network unit (ONU) will be adjusted into a time wavelength division multiplexing channel (TWDM CH) of the target OLT; and receiving, by the source OLT, an adjustment acknowledgement message provided by the target OLT, wherein the adjustment acknowledgement message is used for indicating that the adjustment process of the ONU has been completed. By means of the technical solution provided in the present invention, an ONU of a source OLT can still operate normally after being switched to a channel of a target OLT, thereby achieving the effect that the continuity of the service between the OLT and the ONU can be maintained.

Description

technical field [0001] The present invention relates to the field of communications, in particular to an optical line terminal / optical network unit wavelength adjustment method and device. Background technique [0002] In the NG-PON2 system, there are multiple TWDM (Time-Wavelength Division Multiplexing) channels (TWDM CH), and each TWDM CH has at least one uplink wavelength channel (US CH) and downlink wavelength channel (DS CH); each TWDM CH has at least one transceiver device (including receiver and transmitter, and corresponding MAC processing logic, etc., similar to the OLT in the traditional TDM PON era) for processing, different TWDM CH transceivers, can It is integrated in a PON line card, and can also be distributed in different PON line cards. [0003] In a multi-wavelength TWDM PON system, it is necessary to support ONUs to switch between different TWDM CHs, and the requirements are various. For example, the energy saving of the OLT port (when there are few users...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/24
CPCH04Q2213/1301H04Q2011/0086H04Q2011/0088H04Q11/0067H04J14/0223H04J14/0238
Inventor 张德智袁立权张伟良耿丹
Owner ZTE CORP
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