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Method and device for transmission of light pilot tone signals

A transmission method and signal technology, which is applied in the field of optical communication, can solve the problems such as the inability to dynamically adjust the adjustment coefficient of the optical modulation signal of the PON system, and achieve the effect of ensuring reliability and improving sensitivity

Inactive Publication Date: 2017-11-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a transmission method and device for an optical ceiling adjustment signal, which solves the problem in the prior art that the debugging coefficient of optical ceiling adjustment signal transmission in a PON system cannot be dynamically adjusted

Method used

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  • Method and device for transmission of light pilot tone signals
  • Method and device for transmission of light pilot tone signals
  • Method and device for transmission of light pilot tone signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the embodiment of the present invention provides a method for transmitting an optical top signal, which is applied to the sending end, and specifically includes the following steps:

[0044] Step S101: Send the test signal of the optical top adjustment signal to be transmitted to the receiving end.

[0045] Among them, the optical modulation signal is based on digital modulation technology, which is a mixed signal formed after different types of signals are modulated to a suitable carrier through waveform conversion. The test signal can be modulated with the service signal in the optical top signal, and sent from the sending end to the receiving end. It is worth pointing out that the test signal may be an uplink test signal or a downlink test signal. Take the OLT equipment (Optical Line Terminal, Optical Line Terminal) and ONU equipment (Optical Network Unit, Optical Network Unit) in the PON system as an example, wherein, the transmission link...

Embodiment 2

[0053] Based on the first embodiment above, this embodiment will further describe the transmission method of the optical ceiling adjustment signal in combination with specific application scenarios.

[0054] Wherein, the above-mentioned test signal can be a pseudo-random sequence, and step S101 specifically includes:

[0055] The pseudo-random sequence is modulated according to the current reference modulation coefficient of the optical modulation signal to be transmitted; and the modulated pseudo-random sequence is sent to the receiving end.

[0056] Wherein, the pseudo-random sequence can be sent together with the service signal, that is, the pseudo-random sequence is modulated by the modulated carrier, modulated with the service signal according to the current reference modulation coefficient, and sent from the transmitting end to the receiving end. Wherein, the carrier frequency of the modulated carrier is greater than N times the transmission rate of the pseudo-random seq...

Embodiment 3

[0066] Based on the first embodiment above, this embodiment will further describe the transmission method of the optical ceiling adjustment signal in conjunction with another specific application scenario.

[0067] Wherein, the above-mentioned test signal may be an auxiliary management and control channel AMCC signal, and the current reference modulation coefficient of the optical modulation signal to be transmitted. Step S101 specifically includes:

[0068] Modulate the AMCC signal according to the reference modulation coefficient; send the modulated AMCC signal and the reference modulation coefficient to the receiving end.

[0069] Wherein, the AMCC signal and the current reference modulation factor are sent together with the service signal, that is, after the AMCC is modulated by the modulated carrier, it is modulated with the service signal according to the current reference modulation factor, and sent from the transmitting end to the receiving end. Wherein, the carrier fr...

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PUM

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Abstract

The present invention discloses a method and device for transmission of light pilot tone signals. The method comprises: sending test signals of light pilot tone signals to be transmitted to a receiving terminal; receiving feedback channel quality parameters after the receiving terminal processes the test signals, wherein the channel quality parameters are quality parameters of a transmission link from a sending terminal to the receiving terminal; according to the channel quality parameters fed back by the receiving terminal, regulating the modulation coefficient of the light pilot tone signals; and sending the light pilot tone signals modulated through the modulated modulation coefficient. The method and device for transmission of light pilot tone signals have a channel quality parameter detection feedback mechanism, the sending terminal regulates the modulation coefficient of the light pilot tone signals to be transmitted according to the channel quality parameters fed back through the receiving terminal to select optimal modulation coefficient so as to ensure the reliability of each signal in the light pilot tone signals and improve the sensitivity of the light pilot tone signals.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a method and device for transmitting an optical ceiling signal. Background technique [0002] With the development of Wavelength Division Multiplexing (WDM, Wavelength Division Multiplex) technology in Passive Optical Network (PON, Passive Optical Network), the current optical communication network can simultaneously transmit optical signals of multiple wavelengths in the same optical fiber. In order to facilitate the communication between the management station and the terminal, it is necessary to transmit the wavelength allocation information of each wavelength and the operation and maintenance information in the information pipeline on the optical transmission path. This method is called Auxiliary Management and Control Channel (AMCC, Auxiliary Management and Control Channel) Control Channel) transmission technology. How to transmit AMCC information between stations, ther...

Claims

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Application Information

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IPC IPC(8): H04B10/294H04B10/079
CPCH04B10/07953H04B10/2941H04B10/079H04B10/294
Inventor 陈雷
Owner ZTE CORP
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