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

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
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Example Embodiment

[0042] Example one

[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 transmitting 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 modulating signal is based on digital modulation technology, which transforms different types of signals through waveform transformation and modulates them to a suitable carrier to form a mixed signal. The test signal can be modulated with the service signal in the optical top signal, and sent from the sender to the receiver. It is worth pointing out that the test signal can be an uplink test signal or a downlink test signal. Take the OLT equipment (Optical Line Terminal) and ONU equipment (Optical Network Unit) in the PON system as examples. Among them, the transmission link from the OLT equipme...

Example Embodiment

[0052] Example two

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

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

[0055] According to the current reference modulation coefficient of the optical modulation signal to be transmitted, modulate the pseudo random sequence; send the modulated pseudo random sequence to the receiving end.

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

Example Embodiment

[0065] Example three

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

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

[0068] According to the reference modulation coefficient, modulate the AMCC signal; send the modulated AMCC signal and the reference modulation coefficient to the receiving end.

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

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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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