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Wavelength allocation method, system and equipment of wavelength division multiplexing passive optical network

A passive optical network and wavelength distribution technology, applied in the field of communication, can solve problems such as unfavorable network maintenance, and achieve the effect of convenient maintenance

Inactive Publication Date: 2010-09-01
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to re-set the wavelength when the ONU needs to be replaced or the location is changed, so it is not conducive to network maintenance

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  • Wavelength allocation method, system and equipment of wavelength division multiplexing passive optical network
  • Wavelength allocation method, system and equipment of wavelength division multiplexing passive optical network
  • Wavelength allocation method, system and equipment of wavelength division multiplexing passive optical network

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Embodiment Construction

[0018] The method, system and device provided by the embodiments of the present invention will be described in detail below with reference to the drawings and embodiments.

[0019] The embodiment of the present invention adopts a method in which the OLT allocates wavelengths to the ONUs through downlink Ethernet messages, so as to realize the automatic adaptation of the wavelengths of the ONUs. see figure 1 , the wavelength allocation method provided by the embodiment of the present invention can be applied to optical access networks, such as WDM PON, etc., wherein, according to the available wavelengths in the network, the OLT obtains the wavelength information corresponding to the available wavelengths in the network, and assigns the wavelength The information is carried to the VLAN domain of the downlink Ethernet message; and, the OLT further sends the wavelength information to the ONU through the downlink Ethernet message, so that the ONU adopts the wavelength correspondin...

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Abstract

The embodiment of the invention discloses a wavelength allocation method of a wavelength division multiplexing passive optical network, comprising the following steps of: acquiring wavelength information which corresponds to an available wavelength in the network, and carrying the wavelength information to a VLAN (Virtual Local Area Network) domain of a downlink Ethernet message; and sending the downlink Ethernet message to an optical network unit so that the optical network unit sends uplink data by adopting a wavelength which corresponds to the wavelength information. The wavelength allocation method provided by the embodiment of the invention is used for sending the wavelength information to the optical network unit by utilizing the downlink Ethernet message, thereby realizing the automatic adaptation of the wavelength of the passive optical network and being convenient to maintain. The embodiment of the invention also further discloses wavelength division multiplexing passive optical network system and equipment.

Description

technical field [0001] The present invention mainly relates to the technical field of communication, in particular, to a wavelength allocation method and system for a wavelength division multiplexing passive optical network (WDM PON), and an optical line terminal for a WDM PON system (Optical Line Terminal, OLT) and Optical Network Unit (Optical Network Unit, ONU). Background technique [0002] As "optical access network (OAN)" has gradually become the mainstream access method of network technology, the application of optical access network (OAN), especially PON technology, has been flourishing. [0003] Generally, a WDM PON system is composed of central office equipment OLT, remote equipment ONU, and optical distribution network (Optical Distributing Network, ODN) and other units. Each ONU communicates with the OLT through specific uplink / downlink wavelengths. The uplink / downlink wavelengths between the ONUs are different, and the OLT and ODN transceivers (Transceivers) r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 曾小飞蒋作谦
Owner HUAWEI TECH CO LTD
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