KR101400128B1 - Optical splitter ethernet - Google Patents

Abstract

The present invention relates to an optical line splitter. Provided is the optical line splitter comprising: an optical transmission and reception unit for transmitting an optical signal to the an optical line terminal device and for receiving the optical signal from the optical line terminal device; a splitter unit for splitting the lines by receiving the optical signal from the optical transmission and reception unit; an optical Ethernet control unit including the control units for monitoring the state of the split optical signal, for transmitting an electrical Ethernet signal received from individual subscribers to the optical line terminal device by converting the electrical Ethernet signal into the optical signal, and for transmitting the optical signal split from the splitter to the individual subscribers by converting the optical signal into the electric Ethernet signal; an Ethernet transmission and reception unit including the Ethernet ports for transmitting the electric Ethernet signal converted in the optical Ethernet control unit to the individual subscribers and for transmitting the electric Ethernet signal received from the individual subscribers to the optical Ethernet control unit; and a power source unit for supplying power to the control units in an optical line splitter for splitting the optical signals transmitted from an optical line terminal (OLT) through an optical cable to individual subscribers. According to the present invention, one optical line splitter can execute the existing splitter function and the ONT functions by combining an optical line splitter function and the ONT functions. In addition, the installation of the device, follow-up management, and cost cutting are effectively executed by remarkably reducing the number of the devices inserted into a premises terminal case.

Description

Optical line splitter (OSE) {OPTICAL SPLITTER ETHERNET}

The present invention relates to an optical line distributor, and more particularly, to an optical line splitter that receives a 1 Gbps TPS (Triple Play Service), that is, a voice, image, and data service, from an optical line terminal (OLT) And more particularly to an optical line splitter that can be used.

Fiber To the Home (FTTH) refers to a technology that can provide high-quality broadband communication services by pulling optical communication lines to the general subscriber's premises. FTTH is attracting attention as a broadband integrated network (BcN) capable of supporting convergence of wired / wireless, broadcasting, and communication because of its advantage of providing voice, data and multimedia information at high speed through IP communication network.

FTTH has a speed of up to 1Gbps at 100Mbps, can send almost infinite information without transmission loss, and has little interference from electromagnetic waves. Especially, TPS (Triple Play Service) which provides phone, internet,

The FTTH technology can be divided into three types: PTP (Point to Point), AON (Active Optical Network), and PON (Passive Optical Network). PON is one of the optical subscriber building schemes that provide optical fiber-based high-speed services to enterprises, SOHOs, and households. An optical line terminal (OLT) can be connected to various optical network terminals (ONTs) by using a splitter on an optical cable. PON has a merit of relatively low cost of establishing communication network because it can distribute a plurality of lines around a connection point (ONT) by laying one optical line to a certain distance compared with a one-to-one connection from a center to a subscriber . PON technology can be classified into two types: TDM-PON using time division multiplexing and WDM-PON using wavelength division multiplexing. There are ATM-based ATM-PON, Ethernet-based E-PON, G-PON using general frame protocol, and WDM-PON for wavelength division multiplexing.

In the following, we focus on E-PON which is widely used in IP-centric internet environment among various methods. E-PON is a low-cost, easy-to-operate, shared optical subscriber network by minimizing the number of optical cables to be installed and reducing the number of optical ports in the central office by eliminating the active devices such as the regenerators and amplifiers of outdoor devices. Network devices such as OLTs and multiple ONTs are located at both ends of the PON. The optical signal transmitted through the PON is split by an optical splitter according to whether the direction of the light is upward or downward, and the optical signal is transmitted to a plurality of optical fibers or coupled to one optical fiber.

1 is an exemplary diagram showing a configuration of a conventional E-PON. 1, the OLT 1 is connected to an RN (splitter) 2 via an optical line, and one optical line is connected to an RN 2 Four circuits distributed to four ON lines and connected to each ONT 3 or four lines distributed from the RN 2 are directly connected to ONTs 3 in the subscriber house. The ONT 3 is connected to the subscriber's computer through a UTP cable (Ethernet cable).

According to the conventional E-PON network configuration, the ONT 3 allocated to each subscriber in the terminal box or the subscriber's house is required. In this configuration, the number of ONTs 3 increases as the number of subscribers increases. As the number of ONTs 3 increases, a problem arises that the space of the terminal box is shortened. It becomes quite tricky to repair. In addition, there arises a problem of an increase in the installation cost due to the increase of the ONT 3 and a problem of consuming a large amount of electric power.

As a result, according to the configuration of the conventional E-PON network, there are many problems in installation and follow-up of the equipment, and the problem is inefficient in terms of cost.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a splitter for splitting an optical line and integrating the functions of an ONT into one optical splitter, The present invention is to provide an optical line splitter capable of managing the state of each optical line distributed by a splitter.

In order to achieve the above object, an optical line splitter for distributing an optical signal transmitted through an optical cable from an optical line terminal (OLT) to an individual subscriber, the optical line splitter comprising: An optical transmission / reception unit which receives an optical signal from the device and transmits the optical signal to the optical line terminal; A splitter for receiving the optical signal from the optical transceiver and distributing the optical signal to a plurality of circuits; Converts an optical signal distributed from the splitter unit into an electrical Ethernet signal, transmits the optical signal to an individual subscriber, converts an electrical Ethernet signal received from an individual subscriber into an optical signal, and transmits the optical signal to the optical line terminal, An optical Ethernet controller including a plurality of control units for monitoring a plurality of control units; An Ethernet transceiver including a plurality of Ethernet ports for transmitting an electrical Ethernet signal converted by the optical Ethernet controller to an individual subscriber and transmitting an electrical Ethernet signal received from an individual subscriber to the optical Ethernet controller; And a power unit for supplying power to the plurality of control units.

The Ethernet transceiver includes an Ethernet port 1, an Ethernet port 2, an Ethernet port 3, and an Ethernet port 4. The Ethernet transceiver includes an Ethernet port 1, an Ethernet port 2, an Ethernet port 3, and an Ethernet port 4, The splitter unit divides the optical signal into four lines and transmits the signals to the control unit 1, the control unit 2, the control unit 3, and the control unit 4. The four control units convert the optical signals into electrical Ethernet signals and transmit the optical signals to the subscribers through four Ethernet ports .

The control unit may include an Ethernet transceiver that converts an optical signal into an electrical Ethernet signal and converts an electrical Ethernet signal into an optical signal; And a reset unit for monitoring the operation of the Ethernet transceiver and resetting the Ethernet transceiver if the Ethernet transceiver is not operated.

A power cutoff unit for monitoring the operation of the Ethernet transceiver for a predetermined period of time after resetting the reset unit and shutting off the power supplied from the power supply unit to the Ethernet transceiver when the operation is not performed; And a failure message transmission unit for transmitting a failure occurrence message to the optical line terminal through the optical transceiver unit when the supply of power is cut off by the power cutoff unit.

The controller may further include: an error detector for detecting an error of the optical signal received from the splitter; And an error message transmitter for transmitting an error occurrence message to the optical line terminal through the optical transmitter / receiver when the error is detected by the error detector and for transmitting an error release message to the optical line terminal, And an LED display unit for indicating the state of the optical signal corresponding to the type of the message transmitted by the error message transmitting unit.

According to the optical line splitter of the present invention, by integrating the function of the optical line splitter (splitter) and the functions of the plurality of ONTs, one optical splitter can perform the functions of the conventional splitter and the functions of the plurality of ONTs .

In addition, by greatly reducing the number of equipment in the terminal box, it is easy to install and manage the equipment, and the cost is significantly reduced.

In addition, when a problem occurs in an Ethernet transceiver that converts an optical signal into an electrical Ethernet signal, if the power is not operated normally after a reset and reset, the power supplied to the Ethernet transceiver is cut off and the problem is reported to the OLT. It is possible to control the individual power sources for the lines distributed by the power line.

Further, it is possible to individually manage the state of the distributed optical line by detecting an error of the optical signal of each line distributed from the splitter and reporting the message to the OLT.

1 is an exemplary diagram showing a configuration of a conventional E-PON.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an E-PON.
3 is a block diagram of an optical line splitter according to the present invention;
4 is a block diagram of an optical line splitter in accordance with an embodiment of the present invention.
5 is a block diagram of a control unit included in an optical line splitter according to the present invention;

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a configuration of an E-PON to which an optical line splitter according to the present invention is applied, and FIG. 3 is a block diagram of an optical line splitter according to the present invention.

Referring to FIG. 2, the optical line distributor 4 is installed in a terminal box located in a connection network between a home office and a subscriber's premises. The optical line distributor 4 receives the voice, image and data services from the optical line terminal 1. The optical line connected to the optical line terminal 1 is connected to the optical line terminal 1 through the splitter 2, And the divided optical lines are connected to the optical line distributor 4, respectively. In addition, 1Gbps class optical line is used for providing high-speed service.

The optical line distributor 4 is connected to the computer of the subscriber's home through a UTP cable (Ethernet cable). In other words, the optical line distributor 4 divides the optical signal received from the optical line terminal 1 into a plurality of circuits, converts the optical signals distributed to each subscriber into electrical Ethernet signals, To the subscriber. In the embodiment of FIG. 2, four optical subscribers are connected to one optical line distributor 4, but the present invention is not limited thereto.

3, the optical line distributor 4 includes an optical transceiver 100, a splitter 200, an optical Ethernet controller 300, an Ethernet transceiver 400, and a power source 500, (Not shown).

The optical transmitting / receiving unit 100 receives an optical signal from the optical line terminal 1 and transmits the optical signal to the optical line terminal 1. The optical transceiver unit 100 receives a TPS (voice, image, data) service of 1 Gbps class from the optical line terminal 1.

The splitter unit 200 receives an optical signal from the optical transmitting / receiving unit 100 and distributes the optical signal to a plurality of circuits.

The optical Ethernet controller 300 includes a plurality of controllers. Each controller converts an optical signal distributed from the splitter unit 200 into an electrical Ethernet signal, transmits the optical signal to an individual subscriber through the Ethernet transceiver 400, Converts the electrical Ethernet signal received from the optical line terminal 1 into an optical signal, transmits the optical signal to the optical line terminal 1 through the optical transmitting / receiving unit 100, and monitors the status of the optical signal.

The Ethernet transceiver unit 400 includes a plurality of Ethernet ports. Each Ethernet port transmits an electrical Ethernet signal converted by the optical Ethernet controller 300 to an individual subscriber, and transmits an electrical Ethernet signal received from an individual subscriber to an optical Ethernet controller (300).

The power supply unit 500 supplies power to a plurality of control units included in the optical Ethernet control unit 300.

FIG. 4 is a block diagram of an optical line splitter according to an embodiment of the present invention, and FIG. 5 is a block diagram of a controller included in an optical line splitter according to the present invention.

4, the optical Ethernet controller 300 includes four controllers such as a controller 1 311, a controller 2 312, a controller 3 313, and a controller 4 314, and the Ethernet transceiver 400, Includes an Ethernet port 1 411, an Ethernet port 2 412, an Ethernet port 3 413 and an Ethernet port 4 414. The splitter section 200 divides the optical signal into four lines, 311), the controller 2 (312), the controller 3 (313), and the controller 4 (314), and the four controllers convert the optical signals into electrical Ethernet signals and transmit them to the subscriber through four Ethernet ports, respectively. The four Ethernet ports consist of a Gigabit Ethernet RJ45 port.

The configuration of the control unit and the Ethernet port is one embodiment of the present invention, and the configuration of the control unit and the Ethernet port can be expanded or reduced to four or more.

5, the four control units 311 to 314 include an Ethernet transceiver 10, a reset unit 20, a power cutoff unit 30, a failure message transmission unit 40, an error detection unit 50, (60).

The Ethernet transceiver 10 converts an optical signal received from the splitter unit 200 into an electrical Ethernet signal, and transmits the electrical signal to the subscriber through the Ethernet transceiver 400. The Ethernet transceiver 10 electrically converts the optical signal received through the Ethernet transceiver 400 Converts an Ethernet signal into an optical signal.

The reset unit 20 monitors whether the Ethernet transceiver 10 is operating and can reset the Ethernet transceiver 10 if it does not operate. Specifically, the reset unit 20 periodically checks a specific address to check whether the Ethernet transceiver 10 is operating normally, which is implemented in a chip form. If the Ethernet transceiver 10 does not operate normally, The transceiver 10 can be reset in hardware.

The power shutdown unit 30 monitors the operation of the Ethernet transceiver 10 for a certain period of time after the reset unit 20 resets the Ethernet transceiver 10 and then operates the Ethernet transceiver 10 10). Each of the control units 311 to 314 has one Ethernet transceiver 10 and disconnects only the power supplied to the Ethernet transceiver 10 in which the problem occurs so that the power supplied from the power supply unit 500 to the Ethernet transceiver 10 can be individually .

The fault message transmission unit 40 transmits a fault occurrence message to the optical line terminal 1 through the optical transmission / reception unit 100 when the power supply unit 30 is powered off. The fault occurrence message includes an identifier so as to identify which line among the lines distributed by the splitter unit 200 is transmitted. By doing so, the operator of the E-PON network can remotely identify the fault occurrence.

The error detection unit 50 detects an error of the optical signal received from the splitter unit 200. The error of the optical signal may be a loss of signal, a signal detection, or the like.

When an error is detected by the error detector 50, the error message transmitter 60 transmits an error occurrence message to the optical line terminal 1 through the optical transceiver 100. When the error is released, To the optical line terminal device (1). The error occurrence message and the error release message may include a field indicating which error occurred and released.

The optical line distributor 4 may further include an LED display unit (not shown) on the exterior of the product, and the LED display unit (not shown) may display the state of the optical signal corresponding to the type of the message transmitted by the error message transmitting unit 60 . For example, when the error occurrence message is transmitted, the LED display unit displays red, and when the error release message is transmitted, the LED display unit displays yellow. Of course, the LED display unit may be provided as many as the number of divided lines so as to indicate the state of each divided line.

According to the present invention, by integrating the functions of the optical line splitter (splitter) and the functions of the plurality of ONTs, one optical splitter can perform the functions of the conventional splitter and the plurality of ONTs.

In addition, by greatly reducing the number of equipment in the terminal box, it is easy to install and manage the equipment, and the cost is significantly reduced.

In addition, when a problem occurs in an Ethernet transceiver that converts an optical signal into an electrical Ethernet signal, if the power is not operated normally after a reset and reset, the power supplied to the Ethernet transceiver is cut off and the problem is reported to the OLT. It is possible to control the individual power sources for the lines distributed by the power line.

Further, it is possible to individually manage the state of the distributed optical line by detecting an error of the optical signal of each line distributed from the splitter and reporting the message to the OLT.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Obviously, such modifications are intended to be within the scope of the claims.

1: OLT, optical line terminal 2: RN, splitter
3: ONT, optical network terminator 4: optical line splitter
10: Ethernet transceiver 20:
30: Power cutoff unit 40: Fault message transmitter
50: error detection unit 60: error message transmission unit
100: optical transmission / reception unit 200: splitter unit
300: optical Ethernet controller 311: controller 1
312: control unit 2 313: control unit 3
314: Control section 4 400: Ethernet transmission /
411: Ethernet port 1 412: Ethernet port 2
413: Ethernet port 3 414: Ethernet port 4
500:

Claims (5)

An optical line splitter for distributing an optical signal transmitted from an optical line terminal (OLT) through an optical cable to an individual subscriber,
An optical transceiver for receiving an optical signal from the optical line terminal and for transmitting an optical signal to the optical line terminal;
A splitter for receiving the optical signal from the optical transceiver and distributing the optical signal to a plurality of circuits;
Converts an optical signal distributed from the splitter unit into an electrical Ethernet signal, transmits the optical signal to an individual subscriber, converts an electrical Ethernet signal received from an individual subscriber into an optical signal, and transmits the optical signal to the optical line terminal, An optical Ethernet controller including a plurality of control units for monitoring a plurality of control units;
An Ethernet transceiver including a plurality of Ethernet ports for transmitting an electrical Ethernet signal converted by the optical Ethernet controller to an individual subscriber and transmitting an electrical Ethernet signal received from an individual subscriber to the optical Ethernet controller; And
And a power supply unit for supplying power to the plurality of control units,
The Ethernet transceiver includes an Ethernet port 1, an Ethernet port 2, an Ethernet port 3, and an Ethernet port 4, and the Ethernet transceiver includes a controller 4, a controller 2,
The splitter unit divides the optical signal into four lines and transmits the signals to the control unit 1, the control unit 2, the control unit 3, and the control unit 4. The four control units convert the optical signals into electrical Ethernet signals, To the optical line splitter.
delete The method according to claim 1,
The control unit may include an Ethernet transceiver for converting an optical signal into an electrical Ethernet signal and converting an electrical Ethernet signal into an optical signal; And
And a reset unit for resetting the Ethernet transceiver when the Ethernet transceiver is not operated by monitoring the operation of the Ethernet transceiver. The method of claim 3,
A power cutoff unit for monitoring the operation of the Ethernet transceiver for a predetermined period of time after resetting the reset unit and shutting off the power supplied from the power supply unit to the Ethernet transceiver when the operation is not performed; And
Further comprising a failure message transmitter for transmitting a failure occurrence message to the optical line terminal through the optical transmitter / receiver when the power supply is cut off by the power cutoff unit. The method according to claim 1,
Wherein the control unit comprises: an error detector for detecting an error of an optical signal received from the splitter; And
An error message transmitter for transmitting an error occurrence message to the optical line terminal through the optical transceiver when the error is detected by the error detector and for transmitting an error release message to the optical line terminal when the error is released Including,
Further comprising an LED display unit for indicating a state of an optical signal corresponding to a type of a message transmitted by the error message transmitting unit.

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