A kind of onu positioning system and positioning method based on orthogonal coding

An orthogonal encoding and encoding technology, applied in the field of passive optical fiber network, can solve the problems of prolonging the fault repair time and increasing the cost of passive network fault location, etc., and achieve the effect of reducing fault repair time, reducing cost and wide application range

Inactive Publication Date: 2020-10-13
STATE GRID HUBEI ELECTRIC POWER CO LTD MAINTENANCE CO
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Problems solved by technology

[0009] The above methods cannot locate ONU units that are equal to the distance from the OLT, and manual participation is required to enhance the reflection at the ONU end, which increases the cost of passive network fault location and prolongs the fault repair time

Method used

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  • A kind of onu positioning system and positioning method based on orthogonal coding
  • A kind of onu positioning system and positioning method based on orthogonal coding

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] see figure 2, the embodiment of the present invention includes a passive optical network PON composed of an optical line terminal OLT, an optical distribution network ODN, and an optical network unit ONU in series.

[0040] The optical line terminal OLT is used to connect the optical fiber trunk line and complete the access service of data aggregation and distribution, including the OLT transmitter, the optical time domain reflectometer OTDR, the 8B / 10B encoding unit, the orthogonal encoding unit, the first photoelectric converter, the first A circuit processing unit, a first circulator, a multiplexer / demultiplexer, an OLT receiving end, and a network management unit; the OLT transmitting end is used to send downlink signals, and the 8B / 10B encoding unit is used to perform 8B / 10B encoding on the downlink signals; the optical ...

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Abstract

The invention provides an ONU (Optical Network Unit) positioning system and method based on orthogonal coding. The ONU positioning system comprises a passive optical network PON (Passive Optical Network) formed by sequentially connecting an OLT (Optical Line Terminal) for connecting an optical fiber trunk line, an ODN (Optical Distribution Network) for passive distribution and an ONU for providinga user side interface in series, by allocating a unique feature code to each ONU. The positioning function of the faulty ONU in the TDM-PON network is realized under the condition of not increasing additional conditions.

Description

technical field [0001] The invention belongs to the technical field of passive optical fiber networks, and in particular relates to an ONU positioning system and a positioning method based on orthogonal coding. Background technique [0002] Passive Optical Network PON (Passive Optical Network) is composed of optical line terminal OLT (optical line terminal), optical distribution network ODN (Optical Distribution Network) and optical network unit ONU (Optical Network Unit), mainly using TDM time division multiplexing technology, also known as TDM -PON network; OLT and ONU transmit signals through the optical fiber link included in the ODN, OLT to ONU is a downlink signal, and ONU to OLT is an uplink signal. Multiple ONUs at the ONU end transmit different time slot packets to the OLT through time division technology, and the OLT end judges whether the ONU is in place by analyzing the packet content to identify the service information of the ONU's upstream signal. [0003] Pat...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/071H04B10/077
CPCH04B10/071H04B10/077H04B10/0771
Inventor 张佐星施冬钢胡龙舟张峰郭莎莎
Owner STATE GRID HUBEI ELECTRIC POWER CO LTD MAINTENANCE CO
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