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Wavelength division multiplexed passive optical network apparatus and method of configuration

A passive optical network and wavelength division multiplexing technology, which is applied in wavelength division multiplexing systems, selection devices for multiplexing systems, and multiplexing communications to achieve the effect of reducing time and handshake signal conflicts.

Inactive Publication Date: 2012-12-26
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process must be in order, and thus can be slow, and has the further disadvantage of requiring the identification of each ONT intended to be assigned to the OLT

Method used

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  • Wavelength division multiplexed passive optical network apparatus and method of configuration
  • Wavelength division multiplexed passive optical network apparatus and method of configuration
  • Wavelength division multiplexed passive optical network apparatus and method of configuration

Examples

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Embodiment Construction

[0099] A first embodiment of the present invention provides a figure 1 Steps are shown in the method 10 for configuring a wavelength division multiplexing WDM passive optical network PON. The WDM PON includes an optical line terminal OLT and a plurality of optical network terminals ONT, and each optical network terminal includes a tunable optical filter. Method 10 includes:

[0100] a. identifying a plurality of ports of the OLT, each of which is not assigned to its optical network terminal 12, selecting one of these ports 12, and generating and transmitting from the selected port a signal indicating the corresponding operating wavelength for each identified port wavelength availability signal 14;

[0101] b. On each ONT of multiple unassigned ONTs:

[0102] i. Receive the wavelength availability signal and tune the transmission wavelength of the corresponding tunable optical filter until the filter transmits the wavelength availability signal 16;

[0103] ii. generating a...

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PUM

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Abstract

A method (10) of configuring a WDM PON comprising an OLT and a plurality of ONTs, comprising: a. identifying a plurality of OLT ports which do not have an assigned ONT assigned (12), selecting one port (12), and generating and transmitting a wavelength availability signal from the port indicative of an operating wavelength of each port (14); b. at each of a plurality of unassigned ONTs: i. receiving said availability signal and tuning a transmission wavelength of the ONT tunable filter until it transmits said signal (16); ii. generating a wavelength sequence of the operating wavelengths of the ports; iii. sequentially setting the transmission wavelength of the tunable filter at the wavelengths of the wavelength sequence (20,28) and generating and transmitting a handshake signal at each wavelength (22) until the availability signal is no longer received (30); c. at the selected port, determining a number of handshake signals received at its operating wavelength (24). If more than one has been received, continuing transmission of the availability signal (26). If only one has been received, ceasing transmission of the availability signal and assigning the originating ONT to said port (30).

Description

technical field [0001] The invention relates to a method of configuring a wavelength division multiplexing passive optical network. The invention also relates to a method of configuring an optical network terminal of a wavelength division multiplexing passive optical network. The invention also relates to a method of configuring an optical line terminal of a wavelength division multiplexed passive optical network. The invention also relates to an optical line terminal for a wavelength division multiplexed passive optical network. The method also relates to an optical network terminal for a wavelength division multiplexed passive optical network. The invention also relates to wavelength division multiplexed passive optical networks. Background technique [0002] Wavelength division multiplexing WDM passive optical network PON is increasingly developing towards the use of "colorless" optical network terminals / optical network units ONT / ONU, ONT / ONU can tune their operating w...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04Q11/00H04B10/12
CPCH04J14/0246H04J14/0282H04J14/0227H04J14/025H04J14/0257H04J14/0258H04J14/026H04J14/0267
Inventor R.格罗索
Owner TELEFON AB LM ERICSSON (PUBL)