KR20210006297A - Apparatus and method for remote program downloading - Google Patents

Abstract

The present invention relates to a remote program update method for an optical transceiver using an optical splitter coupler (600). The method includes: a step of inputting new program data to the EMS of a remote program downloading device; a step of transmitting a program upgrade signal from the EMS of the remote program downloading device to the optical transceiver; a step of reporting program download completion preparation at the optical transceiver that has received the program upgrade signal; a step of downloading an upgrade program; and a step of restarting the optical transceiver after the upgrade program is completely downloaded.

Description

Remote program downloading device and method using optical branch combiner {Apparatus and method for remote program downloading}

The present invention relates to a remote program downloading apparatus and method using an optical branch combiner.

An optical transceiver is an essential component of an optical communication network. Specifically, an optical transceiver is a compound word of a transmitter meaning an optical transmitter and a receiver meaning a receiver. An electrical signal is converted into a light signal between an optical cable connecting the optical communication network and a transmission equipment responsible for data transmission. Plays the role of converting into electric signals and exchanges data.

The demand for these optical transceivers is exploding due to the development of communication technology and the rapid increase in data traffic.

On the other hand, the optical transceiver is not equipped with a remote program download function, so program update took a lot of time and cost.

In addition, in the related art, when a program upgrade is required, the optical transceiver in operation has to be removed and mounted in a separate download device, and thereafter, the communication service is interrupted.

Accordingly, the present invention proposes an apparatus and method for upgrading a program of an optical transceiver using the optical branch combiner 600 without interruption of an operating communication service.

The present invention provides a method of upgrading a program of an optical transceiver using an optical branch combiner without interrupting an operating communication service.

The remote program downloading method using the optical branch combiner 600 according to an embodiment of the present invention includes the steps of inputting new program data to an EMS of a remote program downloading device, and a program from the EMS of the remote program downloading device to the optical transceiver. Including the steps of transmitting an upgrade signal, reporting a program download completion preparation from the optical transceiver receiving the program upgrade signal, downloading the upgrade program, and restarting the optical transceiver after completing the download of the upgrade program. Can be configured.

A remote program downloading apparatus according to an embodiment of the present invention is an optical transceiver management apparatus, and an apparatus for updating an operating program of at least one optical transceiver among optical transceivers connected by an optical transmission line for carrier communication and subcarrier communication, the A subcarrier transmission path is formed with the optical transceivers through an optical branch coupler coupled to an optical transmission line, and a program to be updated is transmitted to at least one of the optical transceivers through the optical branch combiner.

Further, the remote program downloading apparatus of the present invention includes a subcarrier transmitter, and the subcarrier transmitter modulates the program to be updated and transmits it to at least one of the optical transceivers on the optical transmission line via an optical branch combiner. do.

According to an embodiment of the present invention, a method of updating an operating program of at least one optical transceiver among optical transceivers connected through an optical transmission path and communicating with each other includes: inputting program data to be updated into a remote program downloading device; And transmitting, by a remote program downloading apparatus, the program to be updated to the optical transceiver through an optical branch combiner coupled to the optical transmission path. The method further includes the steps of, by the remote program downloading device, transmitting a program update signal to the optical transceiver; Further comprising: transmitting, by the optical transceiver receiving the program update signal, a program download preparation completion signal to the remote program downloading device, and transmitting the program to be updated to the optical transceiver, the remote program download The loading device may proceed after receiving a program download preparation completion signal from the optical transceiver.

In addition, the transmission of the program to be updated from the remote program downloading device to the optical transceiver can be transmitted using a subcarrier instead of a carrier used for data communication between optical transceivers, and used for additional information communication between optical transceivers. A method of updating a remote program of an optical transceiver, characterized in that the second subcarrier is used in a guard time interval between signals of the first subcarrier being used.

According to the present invention, an optical transceiver receiving an update program in which a program to be updated in a remote program downloading device is transmitted to an optical transmission line connected to an optical transceiver through an optical branch combiner is a program loaded with a currently loaded program. The update program is stored in a program bank other than the bank, and when the optical transceiver is reset, the stored update program is loaded into the memory.

According to the present invention, a program of an optical transceiver can be upgraded without interruption of an operating communication service.

In addition, according to the present invention, a program of the optical transceiver can be upgraded remotely without a person directly attaching or detaching the optical transceiver.

In addition, the present invention can quickly upgrade a program of a plurality of optical transceivers connected to the network.

1 is a diagram showing a communication network including an optical transceiver management apparatus using an optical branch combiner according to an embodiment of the present invention.
2 is a diagram illustrating a time for transmitting a subcarrier in an optical transceiver management apparatus.
3 is a diagram illustrating a process of preparing a program memory area in an optical transceiver.
4 is a diagram showing a step of downloading an upgrade program.
5 is a diagram illustrating downloading of a remote program to a plurality of lines according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Throughout the specification, when a part is said to be “connected” to another part, this includes not only the case that it is “directly connected”, but also the case that it is “electrically connected” with another element in between. . In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. As used throughout the specification of the present application, the term "step (to)" or "step of" does not mean "step for".

The terms used in the present invention have been selected from general terms that are currently widely used while considering functions in the present invention, but this may vary depending on the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

1. Optical transceiver management apparatus 400 and optical transceiver management method according to an embodiment of the present invention

1 is a diagram showing a communication network including an optical transceiver management apparatus 400 using an optical branch combiner 600 according to an embodiment of the present invention.

Hereinafter, an optical transceiver management apparatus 400 according to an embodiment of the present invention and a program downloading method using optical transceiver management will be described with reference to FIG. 1.

The optical transceivers 200 and 300 of the present invention are interconnected by an optical transmission line 500, transmit and receive carrier-modulated data, and transmit a series of control data and optical transceiver-related information to a subcarrier using a frequency different from that of the carrier. Use to send and receive.

The optical transceiver-related information includes inventory information, DDM information, and status information, and the inventory information includes a transceiver vendor, a part number, and a serial number transceiver type, and the DDM information includes various performance values in the transceiver, and the status The information may include information such as an alarm generated in the transceiver.

The optical transceiver management apparatus 400 of the present invention may branch and receive subcarriers transmitted and received by the optical transceivers, including a subcarrier transmitter/receiver, to the optical branch combiner 600, and includes a series of control commands and data. The subcarrier may be transmitted to the optical transceivers 200 and 300 by transmitting the subcarrier to the optical transmission line 500 through the optical branch combiner 600.

The communication network including the optical transceiver management device 400 using the optical branch combiner 600 according to an embodiment of the present invention includes a first optical transceiver 200, a first host 100, a second optical transceiver 300, and a second optical transceiver. 2 It may be configured to include a host 700, an optical branch combiner 600, and an optical transceiver management device 400.

FIG. 1(a) is a case where an optical transmission line is provided with an up/down line separately, and FIG. 1(b) is a case where a transmission line is formed with a single line. 1(c) is an enlarged view of the COT side host and the optical transceiver 200 on the left side of A-A' in FIG. 1(a), and FIG. 1(d) is an enlarged view of the right side B-B' in FIG. 1(a). It is an enlarged view of the RT-side host and the optical transceiver 300. The COT side and the RT side of FIG. 1(b) are also the same as those of FIGS. 1(c) and 1(d).

The first optical transceiver 200 may be a COT-side optical transceiver, and the second optical transceiver 300 may be an RT-side optical transceiver.

Meanwhile, the first and second optical transceivers may be the same optical transceiver. Specifically, each of the first and second optical transceivers may include a host interface, a CPU (TRx) subcarrier transmission unit, a subcarrier reception unit, an optical transmitter, an optical receiver, and an amplification unit.

On the other hand, the optical transceiver management apparatus 400 may be configured to include a subcarrier transmitter/receiver, CPU, and EMS, and the subcarrier transmitter/receiver may be configured to include an optical transmitter, an optical receiver, a subcarrier transmitter, and a subcarrier receiver. I can. 1(e) is a detailed diagram of an optical transceiver management apparatus 400 showing this.

The optical transceiver management apparatus 400 is a COT subcarrier transmitter/receiver that transmits a subcarrier signal to the first optical transceiver 200 and receives a subcarrier transmitted from the second optical transceiver 300 to the first optical transceiver 200. 410, an RT subcarrier transmitter/receiver 420 that transmits a subcarrier signal to the second optical transceiver 300 and receives a subcarrier transmitted from the first optical transceiver 200 to the second optical transceiver 300, a control unit It may be configured to include 430, the control unit may be configured to include a CPU and an EMS (Equipment Management System). The optical transceiver management apparatus 400 of the present invention may be connected to another network through EMS to transmit and receive control signals, and may be controlled through an external network through EMS.

Specifically, the subcarrier receiving unit receives a subcarrier signal transmitted between the first and second optical transceivers through an optical receiver, and the subcarrier transmitting unit controls the optical transceivers 200 and 300 in the optical transceiver management device 400. The signal may be transmitted to the first and second transceivers through an optical transmitter.

2. Remote optical transceiver program management method using an optical branch combiner according to an embodiment of the present invention

The remote optical transceiver program management method using the optical branch combiner 600 according to an embodiment of the present invention, by using the optical transceiver management device 400 according to the present invention, the optical transceiver 200 on the optical transmission line 500, This is a method of transmitting and mounting an optical transceiver program that is mounted on 300) and operates the optical transceiver.

Hereinafter, in the present invention, the optical transceiver management device 400 is used as a remote program downloading device. Hereinafter, the remote program downloading device 400 refers to an optical transceiver optical receiver 400.

The optical transceiver program update method according to the present invention includes inputting new program data to the EMS of the remote program downloading device 400, and sending a program upgrade signal from the EMS of the remote program downloading device to the optical transceivers 200 and 300. Transmitting, reporting completion of program download preparation from the optical transceivers 200 and 300 that have received the program upgrade signal to the remote program downloading device 400, downloading an upgrade program, and downloading an upgrade program After that, it may be configured to include restarting the optical transceivers 200 and 300.

Specifically, in the step of transmitting a program upgrade signal from the EMS of the remote program downloading device to the optical transceiver, the subcarrier containing the new program is the optical transceiver management device 400 (remote program downloading device) -> subcarrier transmitter 410 -> optical branch combiner 600-optical transmission line 500 -> subcarrier receiving unit of optical transceivers 200 and 300 -> CPU of optical transceivers 200 and 300 may be transmitted in this order.

In this case, the new program may be transmitted to each or both of the first optical transceiver 200 and the second optical transceiver 300. It may be transmitted to any optical transceiver requiring program update.

At this time, in order to transmit a program upgrade signal without interfering with communication between the COT optical transceiver and the RT optical transceiver, a guard time on a time axis as shown in FIG. 2 may be used. Transmission of the subcarrier between the COT and RT may be performed at a predetermined guard time to prevent noise, and the control signal or control command from the optical transceiver management device 400 to the optical transceivers 200 and 300 is By transmitting/receiving during this guard time period, information transmission/reception of the subcarrier is not disturbed.

Meanwhile, after receiving the program upgrade signal, the optical transceiver may prepare a program memory area as shown in FIG. 3.

The optical transceiver management device 400 can transmit a program upgrade or update signal to the optical transceiver, which can transmit an update signal from an external network through the EMS 430, and upgrade/update from an external network through the EMS 430. The update program is also received and transmitted to the optical transceivers 200 and 300.

The update/upgrade procedure of the optical transceiver program may be performed through the same procedure as in FIG. 4. The program data and control data between the optical transceiver management device 400 and the optical transceivers 200 and 300 in FIG. 4 are provided by the optical branch combiner 600 through the optical transmission path 500 and the optical transceiver management device 400 and the optical transceiver. It is transmitted by setting a subcarrier transmission/reception path between the transceivers 200 and 300.

First, the optical transceiver management apparatus 400 transmits a program upgrade command to the optical transceivers 200 and 300.

Upon receiving the program upgrade signal, the optical transceivers 200 and 300 designate a program bank to download a new program and report the program download completion preparation as described below. The optical transceiver management device 400, which has received a report of the program download completion preparation, checks whether an error occurs when transmitting each data packet, and performs a procedure such as data retransmission accordingly, as shown in FIG. 4, while the optical branch combiner 600 ), a program data packet is transmitted using a subcarrier through the optical transmission line 500. The present invention is not limited thereto, and a program may be downloaded by performing various known download procedures.

The optical transceiver management apparatus 400 downloads a program to be updated through a network (EMS) and transmits the optical transceiver program to the CPU of the optical transceiver to be updated. As described above, the transmission of the program is converted into subcarriers in the subcarrier transmission/reception units 410 and 420 of the optical transceiver management device 400, and then the CPU of the optical transceivers 200 and 300 to update through the optical branch combiner 600. Transfer to.

As shown in FIG. 3, the control unit including the CPU of the optical transceiver may include a ROM, a RAM, a boot loader, and a bank selector, and the received program is the first program bank of the ROM. Is optionally stored in.

Among the program banks 1 and 2, a new program may be stored in a bank in which an old program is mounted. When a previously operated program is stored in program bank 1, a newly received program may be stored in program bank 2.

At this time, the optical transceiver may receive a new program in a packet unit and store it in the program bank, and transmit a final packet acknowledgment signal of program data to the optical transceiver management apparatus. Upon receiving this, the optical transceiver management apparatus transmits a program restart command to the optical transceiver, and the optical transceiver receives the command to perform a program restart, that is, reset.

When the CPUs of the optical transceivers 200 and 300 are reset for program update, upon rebooting, the bank selector selects program bank 2 and the boot loader loads a new program stored in program bank 2 to update the operating program with a new program. .

When the program is updated or upgraded again, the optical transceiver management device 400 functioning as a remote program downloading device transmits the downloaded program to the optical transceiver through the optical branch combiner 600, and the optical transceivers 200 and 300 ) Stores a new program in program bank 1, and upon reset, the bank selector selects program bank 1 and updates it with the new program. In this way, program banks 1 and 2 can be used alternately to update/upgrade programs.

Meanwhile, as another embodiment of the present invention, a remote program download function may be performed on a plurality of lines by using a remote program downloading apparatus capable of managing multiple networks as shown in FIG. 5. The optical transceiver management device 400 may additionally include an optical switch 440 having N terminals, and N (N = 1, 2, 3, ... n) terminals of the optical switch have different optical transmission paths. By being connected to the optical branch combiner provided in the present invention, the optical transceiver management apparatus of the present invention can manage and control optical transceivers on N optical transmission paths.

On the other hand, although the technical idea of the present invention has been described in detail according to the above embodiment, it should be noted that the above embodiment is for the purpose of explanation and not for the limitation thereof. In addition, those skilled in the art in the technical field of the present invention will be able to understand that various embodiments are possible within the scope of the spirit of the present invention.

100: first host
200, 300: optical transceiver
400: optical transceiver management device
500: optical transmission line
600: optical branch combiner

Claims (8)

A method of updating an operating program of at least one or more optical transceivers among optical transceivers connected through an optical transmission path and communicating with each other,
Inputting program data to be updated into a remote program downloading device;
Transmitting, by a remote program downloading device, the program to be updated to the optical transceiver through an optical branch combiner coupled to the optical transmission path;
Remote program update method of the optical transceiver, characterized in that configured to include. The method according to claim 1,
Transmitting, by the remote program downloading device, a program update signal to the optical transceiver;
Transmitting, by the optical transceiver receiving a program update signal, a program download preparation completion signal to the remote program downloading device;
It further includes,
And transmitting the program to be updated to the optical transceiver is performed after the remote program downloading device receives a program download preparation completion signal from the optical transceiver. The method according to claim 1 or 2,
The transmission of a program to be updated from the remote program downloading device to the optical transceiver uses a subcarrier rather than a carrier used for data communication between optical transceivers. The method of claim 3,
The transmission of the program to be updated comprises using a subcarrier in a guard time interval between signals of a subcarrier used for communication of additional information between optical transceivers. The method according to claim 2,
The optical transceiver receiving the update program transmitting the program to be updated from the remote program downloading device to an optical transmission line connected to the optical transceiver through an optical branch combiner,
Saves the update program to a program bank other than the program bank in which the currently loaded program is loaded,
Loading the stored update program into a memory;
Remote program update method of the optical transceiver, characterized in that. A remote program downloading device for updating at least one optical transceiver operating program among optical transceivers connected by an optical transmission line for carrier communication and subcarrier communication,
The optical transceivers and the subcarrier transmission path are formed through an optical branch coupler coupled to the optical transmission line,
Transmitting a program to be updated to at least one of the optical transceivers through the optical branch combiner;
Remote program downloading device, characterized in that. The method of claim 6,
The remote program downloading device,
It is configured to include a subcarrier transmitter,
The subcarrier transmitter modulates the program to be updated by subcarrier and transmits it to at least one of the optical transceivers;
Remote program downloading device, characterized in that. The method of claim 6,
The remote program downloading device,
An optical switch having N terminals is additionally provided,
The N (N = 1, 2, 3,… n) terminals of the optical switch are connected to optical branch combiners provided in different optical transmission paths, so that the remote program downloading device is connected to the N optical transmission paths. Allowing the program to be updated;
Remote program downloading device, characterized in that.

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