Data processing method of optical network element, corresponding optical network element and communication system

A technology for data processing and optical network units, applied in optical multiplexing systems, transmission systems, electrical components, etc., can solve complex implementation, power budget (length limitation, time-domain multiplexing, etc. issues, etc., to improve quality Effect

Active Publication Date: 2015-11-25
XIEON NETWORKS SARL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages relate to the queuing process and the dynamic bandwidth allocation in the upstream direction, which leads to a transmission delay of 20ms to 100ms in total and a complex implementation of the corresponding protocol
Another disadvantage is that the upstream transmitter of the ONU is switched on and off due to time domain multiplexing, resulting in high dynamic requirements at the upstream receiver
Since GPON and GEPON do not use heterodyne receivers, the power budget (length, splitting factor) is also limited

Method used

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  • Data processing method of optical network element, corresponding optical network element and communication system
  • Data processing method of optical network element, corresponding optical network element and communication system
  • Data processing method of optical network element, corresponding optical network element and communication system

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Embodiment Construction

[0050] The proposed solution specifically provides a single downlink wavelength for n users, and provides a dedicated uplink wavelength for each user. A single downlink wavelength can be utilized to broadcast information to the n users.

[0051] Each ONU can include a heterodyne receiver. However, in contrast to well-known NGOA receivers, each ONU connected to the PON can use a different intermediate frequency (IF). This allows each ONU to use the local oscillator frequency of its heterodyne receiver as the transmit frequency (or wavelength) in the upstream direction.

[0052] For example, the downstream bandwidth of the optical communication system may be set to 1 Gbit / s, and the 1 Gbit / s is used for all users or ONUs attached to the PON or part thereof. In addition, each user may be allocated an uplink bandwidth of reduced bandwidth, for example, a total of 100 Mbit / s. The intermediate frequencies of different ONUs 1 to 31 can be totaled: 1.5GHz, 1.7GHz, 1.9GHz,...,7.7GHz.

[0...

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Abstract

A method for data processing of an optical network element is provided, wherein a configuration information is received at the optical network element and a light signal is adjusted to a wavelength or wavelength range indicated by said configuration information; wherein an incoming optical signal is demodulated via the light signal and mixed as an electrical demodulated signal with a signal of an oscillator; wherein the signal of the oscillator is tuned to improve a reception of the incoming signal at the optical network element; and wherein the light signal is used for upstream modulation to provide a modulated optical upstream signal. Furthermore, an according device and a communication system are suggested including at least one such device.

Description

Technical field [0001] The invention relates to a method and a device for data processing of an optical network element. In addition, a communication system including at least one such device is proposed. Background technique [0002] Passive Optical Network (PON) is about fiber-to-the-home (FTTH, fiber-to-the-home), fiber-to-the-business (FTTB, fiber-to-the-business), and fiber-to-the-road (FTTC, fiber-to-the-home) A promising approach to the to-the-curb) situation, especially because passive optical networks (PON) overcome the economic limitations of traditional point-to-point solutions. [0003] Several PON types have been standardized and are currently being promoted and applied by network service providers worldwide. The conventional PON distributes the downstream traffic from the optical line terminal (OLT) to the optical network unit (ONU) in a broadcast manner, and the ONU sends the upstream data packets multiplexed in time to the OLT. Thus, the communication between ONU...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04B10/60H04B10/69H04J14/02H04Q11/00H04B10/516
CPCH04Q11/0067H04B10/60H04B10/6971H04J14/0227H04J14/0246H04J14/025H04J14/0252H04J14/0282H04B10/25H04B10/43H04J14/02
InventorT.特雷耶K.克洛佩H.罗德
OwnerXIEON NETWORKS SARL