WO2010145601A1

WO2010145601A1 - Device, system and method for performing protection switch in wavelength division multiplexing passive optical network

Info

Publication number: WO2010145601A1
Application number: PCT/CN2010/074683
Authority: WO
Inventors: 俞杰
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-09-30
Filing date: 2010-06-29
Publication date: 2010-12-23
Also published as: CN101667865B; CN101667865A

Abstract

The present invention discloses a device, system and method for performing protection switch in a wavelength division multiplexing passive optical network (WDM PON). The device of the present invention relates to an optical line terminal (OLT) and optical network unit (ONU). The OLT/ONU comprises: a primary PON service access module, used for detecting optical signals of access service and notifying a protection switch control module when a failure occurs on the communication optical fiber between the OLT and ONU; the protection switch control module, used for sending protection switch notification message to a standby PON service access module to notify that the service is switched into the standby PON service access module from the primary PON service access module; and the standby PON service access module, used for sending the protection switch notification message to the ONU/OLT. The present invention can notify the side of the ONU/OLT in time to implement protection switch when detecting an optical fiber failure on the side of the OLT/ONU, therefore the protection of a full-service optical fiber between the OLT and ONU is achieved and the normal transmission of the service is guaranteed.

Description

Equipment, system and method of Zhongxiu

This relates to the field of optical communication wood, especially

The device, system and method in (W O ). Background

Look

The reduction, the communication is transparent, the carrying capacity, the non-growth of the new and the special needs, the important way to connect, gradually, to the station (TTP, be The ee, 仟 to the big (TTB , be TheB d ), 仟 to the office (TTO, be Th c ) and the 仟 to the home ( TT , be The o ), the connection must start.

In particular, (W O , Wavee gh V o pex g a veOp ca ewo ) is an important way to meet the needs of the new ones without the need for good, good, low cost and low cost.

W O 1 , including the terminal (O T, Op ca e Te a ), the end of the light sheep (O, Op ca ewo) and the demultiplexer, in the W mixed PO, can be connected in the wave device,

Then connect O.

WO wood research, but what OT to O are the same and each has yet to be studied. content

The solution of this solution is provided by Ben.

The device, system and method.

This is provided in the same (W O )

Optical terminal (O T), including

The main PO is connected to each other, and the W O and the respective lights are connected.

, O T sheep (O) The same communication 仟 Is there a barrier, the obstacle, the control

The first control, the failure received at the root,

The message is connected to the POs, and the main POs are connected and switched to the POs and connected.

The POs are connected to each other, and the received message at the root replaces the primary PO and connects to the primary PO and connects to each other.

And each, to the O message.

The first main/each PO is connected to each other, and includes a physical interface, a detector, a W/user, a plurality of receiving, and a wavelength detector, an interchanger, and a rest control (O A ) respectively connected to the receivers, wherein

The detector, whether there is an uplink optical physical interface, in the

Barrier message

The W/user, the detector is connected to each of the receivers that are connected to each of the different wavelengths of the light that is going up and down.

The wavelength detector receives light of a received phase wavelength, Light at the unphased wavelength to the first control wavelength barrier message

The special converter converts the phase wavelength light into a PO AC

5 said PO AC , in , package and solution

, the obstacle information on O, the control PO AC barrier message.

The control is close to, in the photo-blocking message of the photodetector in the main PO and the connected, the PO AC message to the O and the other, and all the main POs are connected. Switch to each PO and connect each

The POAC barrier message of the partial wavelength detector or the PO AC barrier message of the partial PO AC is received by the primary PO and each of the POs, and the PO AC communication message of each PO and each connection is connected to the primary PO. And each of the barriers that are connected to each other is switched to the PO and connected.

The first main/each PO is connected to each other, and includes the optical unit and the plurality of 0s, and the respective descending lights of the special converters are sent to the W/user.

The W/user, which is close to each light line

The large device sends the synthesized optical large physical interface to 5 O. Each of the POs is close to each other, and the POST message received by the PO AC is sequentially sent to the O, the W/user, and the optical amplifier.

This provides the O in W O , including the second PO and each connected to the connected W O and each light

, O T the same communication 仟 is a fault, in the barrier, the second control

The second control, the barrier received at the root, the message to the second PO and each connected, the second PO is connected and switched to the second PO and each connected

The second POs are connected to each other, and the second PO is replaced by the second PO and connected to each other.

And each, to the news.

The second/each PO is connected, including the light receiving, the filter, the detector, the changer, and the idle control PO AC .

Receiving, receiving the downlink of O T and sending each light to the filter

Filter, for received light filtering

Detector, filtered light, in the

, to the second control barrier message

The special converter, in which the filtered light is replaced by PO AC, the special package, the solution and the solution, in the O T guarantee information, to the second

PO AC barrier message. The second control is similar to the photo-blocking message of the photodetector in the second PO and the connected, or the PO AC blocking message of the PO-AC in the second PO and each connected to the second PO and each PO AC message in the connection, the second PO and all the connected ones are switched to the second PO and connected.

The second / each PO and each connected, including the light friend

PO AC, which will be connected to the next line and packaged, and will be sent to the special converter.

The converter is connected to send the special light to the T

The second POs are connected to each other, and are close to the protection message received by the PO AC, and the special converter and the light are sent to the T.

This book provides the system in W O, including O T and O , O T including

, O T O The same communication 仟 Is there a barrier, the obstacle, the control

First, the barrier received by the root passes to the POs and connects to each other. The primary POs are connected and switched to the POs and connected to each other.

The POs are connected to each other, and the communication message received at the root replaces the primary PO and connects to the primary PO and connects to each other.

And each, to O news

O includes The second PO is connected to each other, and the WO and the respective lights are connected, and the communication of the terminal OTO is blocked, and the second control is performed.

The second control, the failure received at the root,

The message is connected to the second POs, and the second POs are connected to each other and switched to the second POs.

And each, to the news.

The first master/each PO in the OT is connected to each other, and includes a physical interface, a detector, a W/user, a plurality of receiving, and a wavelength detector connected to each receiver, a special converter, and a meta-interval. Connected to control PO AC, where

The first detector, whether there is an uplink and each optical physical connection, in the

Barrier message

The W/user, the first detector is connected to each of the plurality of different wavelengths of the line, and each of the paths is separately received.

The wavelength detector receives the received phase wavelength light

, in the unphased wavelength of light , to the first control wavelength barrier message

The special converter converts the phase wavelength light into

Send to O AC

The O AC , the package, the solution , the obstacle information on O, to the first control PO AC barrier message.

The first/each PO in O is connected, and includes a second receiving, a filter, a second detector, a second converter, and a second PO AC.

Second receiving, receiving the downlink of O T and sending each light to the filter

Filter, for received light filtering

The second detector, in the filtered light, in the second, to the second control barrier message

The second special converter converts the filtered light into a second PO AC to block the information of the special, encapsulation and solution, O T , to the second control PO AC .

The method in W O is provided, including the PO of O T and the connected W O and the respective lights

, O T O The same communication 仟 Is there a barrier, in the barrier, the control of the O T

Control the received barrier, pass the message to each PO of the O T and connect it to each other, and connect the POs of the O T to each PO of the O T and connect them to each other.

Each PO of the O T is connected to each other, and the received PO, &, the PO of the replacement O T are connected to the PO of the O T and are connected.

And each, to O news.

Controlling the reception of the barrier, the message Controlling the photo-blocking message of the photodetector that receives the PO and connecting each PO-connected PO AC message to each PO, and switching all the POs to each PO and connecting them to each other and

Controlling the wavelength barrier of some POs in the received PO and the PO AC barrier message of some PO ACs, and PO AC to each PO

Through the message, the PO and the corresponding barriers are switched to each PO and connected.

This method provides the method in W O, including the PO of O and each connected W O and each light

, O T O The same communication 仟 Is there a barrier, in the barrier, the protection of the O?

The protection of the O is controlled, and the message is connected to each PO of the O, and the POs of the O are connected and switched to the POs of the O.

Each PO of the O is connected to the received message, and replaces the PO of the O and connects to the PO of each O and connects each other.

And each, to the news.

The benefits of this include

The WO's replacement device, system and method provided by this friend, OT East said, OT PO and each connected WO and each light, OT sheep O with the same communication barrier, in the barrier, through OT protection Control, OT protection The control message is sent to each PO and connected to each other. Each PO is connected to each other and switched to each PO and connected to each other. Each PO is close to the O that sends the message to the end, and the east is also the main PO barrier. , to the security control of the barriers, and the POs of each O are switched to each PO and connected to each other, and the Tongyou is sent to the end, using the WO replacement device, system and method provided by the present, in OT to仟 (including 仟 and branch 仟) barriers, not completed by OT, and near-end O, so that O is not in trouble, but also get access, guarantee, guarantee OT and O with each other, and In the case of O to the obstacle, it is also the same as the OT and the line of protection, OT and O, and the OT and O are the same. Description

1 Schematic of the existing W O

2 The indication of O T provided by Liben

The indication of O provided by Liben

4 The power of the provided W O

5 method of O T provided by Liben

6 method of providing O's method. Hugh way

Combined below, the appliance is provided by

Description of the WO replacement device, system and method. First of all, the introduction of OT and features in WO.

As shown in Fig. 2, the O T's Hugh includes the main PO and each of the 201, the control 202 and the PO and each of the 203

The main PO is connected to each other 201, and the connected W O and each light

, O T O The same communication 仟 Is there a barrier, in the barrier control 202

Control 202, the barrier received at the root, the message to each PO and each connected to 203, the PO is connected to each of 201 and each is switched to each PO and connected to each other 203

Each PO is connected to 203, and the security message received at the root replaces the PO and connects 201 POs and connects each of 201 to each other to send a message to O.

The O T includes and each 204, PO and 201 and each PO are connected to each other 203, and each 204 is mainly responsible for the PO and each of them, and is similar to the Ethernet exchange function, and each

The 204 connection sees a number of POs and connects them, and each provides an interface. No longer here.

In different security modes, POs can be connected to each PO and each PO can be connected to each PO and each PO can be connected and protected.

Multiple POs and each way to protect. In this book, we will explain each PO and connect it to each other and connect it to each other.

2, the OT PO is connected to each PO and each PO The same is true, with 2 POs and 201 connected to each other, OT PO and each connected 201, including physical interface 2011, 2012, Detector 2013 W / User 2014, several receiving 2015, 2016, each Receive the 2015 multi-wavelength detector 2017 connected to each, the 2016 and the wavelength converter 2017 connected to the optical converter 2018 and the rest control (O AC, a veOp ca ewo edaAcce Co o ) 2019

Among them, on the upside and each east said, mainly through physical interface 2011, detector 2013 W / consumer 2014, receiving 2015, wavelength detector 2017, converter 2018 and PO AC 2019, among them

Physical interface 2011 is connected externally.

The role of the tester 2013 is whether or not there is a physical interface, and if there is no light, then O T and O have the same obstacle. The tester 2013 did not arrive at any light, and the control 202 was blocked.

In this paper, the same optical force of the wave in the W PO is branched, and the optical force of the wave and O is branched.

The role of W / User 2014 in the uplink is to connect each light

Long solution, that is, light that will carry different wavelengths d, d d d4

A number of different wavelengths of light are received separately from each other. Receive the light of the phase wavelength of the 2015 Receive W / User 2014.

The W/user's different wavelengths of light are equal, in other words depending on the W/user's combination/capability. The wavelength detector 2017, which receives the 2015 connection, receives the light analysis received in 2015 and the light receiving barrier of the phase wavelength, and the light of the phase wavelength is not controlled to the control 202 wavelength barrier message.

The translator 2018 will receive 5 bits of the received phase wavelength (eg, d wavelength). Receiving a special changer.

PO AC 2019, specializer 2018 special, packaged and solved, PO AC 2019 O on the protection information (barrier information), to control 202 PO AC barrier message.

O AC can be Ethernet ( PO A , he e Pa veOp ca ewo edaAce Co o ), thousand b

Rest control (GPO AC, Ggab Cappabe O edaAce Co o ) or other US PO AC.

However, each PO and each PO can have several PO ACs, and 5 O ACs are equal, that is, PO AC

It also depends on the combined/capability of the W/user.

On the downside and each east said, the main PO AC 2019, the special converter 2018 2016 / the consumer 2014, the big 2012 and the physical interface 2011

O AC 2019, which will be downlinked, packaged, and packaged.

a special transformer 2018, which is to illuminate a specific wavelength of light,

2016 will be special light W / Utilities 20145 W / Utilities 2014 will be each of the different wavelengths of 2016 The light (in the case of the sum of 1, 2, 4) is synthesized to use the same root.

In 2012, the light that was synthesized by W/Usage 2014 was large. It can be used as a large piece of wood (b dopedOp ca be A p e ) or other large wood.

The control 202 receives the PO and connects each of the 201 photodetector messages of the detector 2013, that is, the control

It is the same as the O T and the O, and the PO AC message is sent to each PO and the PO is connected.

All of them are switched to each PO and connected.

The control 202 receives the PO and connects each of the 20 wavelength detectors (ie, not all of the wavelength detectors) of the optical barrier message or a partial PO AC (ie, not all of its PO AC ) PO AC barrier messages, Some wavelengths of light are not received, or some parts of O have fault information (not all O's have access to the fault information), then

The control 202 is the same branch of the OT and the O. In the case of the god, the control 202 sends a PO AC message to each PO and connects each of the 203, and the faulty phase can be connected to each other by the main PO. Each PO is connected to 203, or each of the POs is connected to 20 and each is switched to each PO and connected to 203.

Each PO is connected to 203, which is close to the protection message received by the PO AC, and then the special converter 2018, the 2016 W / the user 2014 and the optical amplifier 2012 are sent to the O.

However, each PO in the OT can also be protected by other methods. The introduction of the function and function of the light sheep O in the following WO.

As shown in Fig. 3, the sheep O is included in the main PO and is connected to the 301 control 302 and each PO and connected to each other.

The main PO is connected to each other 301, and the connected W O and each light

, O T O The same communication 仟 Is there a barrier, in the barrier, the control 302

Control 302, the fault received at the root, the message to each PO and each 303, the PO and the 301 are switched to each PO and connected to each other 303

Each PO is connected to 303, in the root message, replaces the PO and connects each 301 PO and connects each of the 301

, to the O T message.

O consists of nearly 304, PO and each connected 301 and each PO and each connected to 303, and each of the 304 is mainly responsible for PO and each connected, and is similar to the ether exchange and other functions, and each

Connect to see a number of POs and connect them, and provide interfaces. I will not repeat them here.

O T is similar, O can be used to introduce POs and each of them can be connected to each other and can be connected to each other.

3, O PO is connected to each other 301 and each PO and each of the 303 is completely connected with 3 PO and each is connected to 301. East explanation.

The POs are connected to each other 301, including light receiving 3011, filter 3012, detectors 3013, 3014, changer 3015, and PO AC 3016.

In the downlink and each east, the sequentially connected light receiving 3011, the filter 3012, the detector 3013, the changer 3015, and the PO AC 3016

among them

The light receiving 3011 receives the downlink of the O T and the respective lights are sent to the filter 3012.

Filter 3012, the wavelength of the received optical filter,

The detector 3013, in the filtered light, does not, the control 302 is blocked, and the barrier message may be a lost (OS, o O Sg a ) message, a bad message, or a message that is not received.

a changer 3015 for replacing the filtered light into

PO AC 3016, in the special, encapsulation and solution, O T security information, to control 302 PO AC barrier message.

On the upside and each east said, PO AC 3016, special 3015, 3014 are connected in turn.

PO AC 3016, for the uplink and each line, packaged, and sent to the changer 3015

The special changer 3015, in which the received special and special light are replaced by the phase

3014, the special changer 3015 is connected, and the special changer 3015 Light sent to T

The security control 302 in the middle is close to the PO in the O and the optical barrier message of the detector 3013 in the 301, or the PO AC barrier message of the PO AC 3016, to each PO of the O and in each of the 303 PO AC message, all the POs of the O and each of the POs are switched to the POs of the O and connected to each other.

Each PO of O is connected to 303, which is close to the protection message received by the PO AC, and the converter and the light are sequentially sent to the T.

However, each PO in O can be connected to other POs in other ways.

This is provided in W O

System, shown in 4, includes O T401 and O 402, of which

O T401 Hugh includes

The main and each connected 4011, the connected W O and each light

, O T sheep O The same communication 仟 Is there a barrier, in the barrier, the general control 4012

In the 4012, the fault is received by the root, and the message is sent to the PO and connected to the 4011. The first PO is connected to each other and the 40 is switched to the PO and each is connected.

Each PO is connected to 4013, and the security message received at the root replaces the primary PO and connects to the primary PO and connects each of the 4011 to the O-message message.

O 402 Hugh includes

The second PO is connected to each other 4021, and the WO is connected to each other. , OTO with the communication 仟 is a fault, in the fault pass second control 4022

The second control 4022, the barrier received at the root,

The message is sent to the second POs and connected to each other 4023. The second POs are connected to each other 4021 and are switched to the second POs and connected to each other 4023.

The second POs are connected to each other 4023. In the root message, the second PO is replaced and each of the second POs is connected to each other and the 4021 is connected to each other.

The first/each PO of the OT is connected, and the physical interface, the optical sensor, the W/user, the plurality of receiving, and the detectors connected to the respective receivers, the first converter, and the PO AC are included. among them

The first detector, whether there is an uplink optical physical interface, in the no control error message

The W/user, the first detector is connected to each of the different wavelengths of the upstream and each light, and each of the respective channels is received.

The undetector receives the received phase wavelength of light at the first, and the light of the unphased wavelength is blocked to the first control wavelength.

The special converter converts the phase wavelength light into O AC

PO, AC, encapsulation and solution, obstacle information on O, to control PO AC barrier message.

The first main/each PO is connected, and includes a second receiving, a filter, a second detector, a second converter, and a second PO AC.

Filter, for received light filtering

The second detector, the filtered light, in the

, to the second control barrier message

a second special changer for replacing the filtered light into

The second PO AC, in the special, encapsulation and solution, O T security information, to the second control PO AC barrier message.

In the same way, this method provides the method in W O, because the principle of the method is solved in W O

The device is similar, so the method can be installed, not.

O T Dong said that the method in W O provided by this article, shown in 5, takes a step

Step 501 O T PO and each connected W O and each light, O T sheep O the same communication 仟 whether there is a barrier, in the barrier, through O T security control.

Step 502: Control the received barrier, and send the message to each PO of the OT and connect each other. The POs of the OT are connected and switched to the POs of the OT and connected to each other. Step 503: Each PO of the OT is connected to each other, and the received security message is replaced by the OT PO and each OT PO is connected and connected.

And each, to O news.

In step 502, the security control receives the barrier,

News, Hugh includes

The charge control message of the photodetector that received the PO and connected to each PO, and the PO AC connected to each PO

Through the message, all the POs and all the switches are switched to the POs and connected.

Controlling the PO-blocking message of the PO and receiving some of the wavelength detectors or the PO AC barrier message of some PO ACs, and PO AC to each PO

O Dong said that the method in the provided W O, 6 shows, the rest includes the following steps

Step 601 O PO and each connected W O and each light, O T O the same communication 仟 whether there is a barrier, in the barrier, through the O control.

Step 602 O guarantees the reception of the barrier,

The POs of the messages are connected to each other, and the POs of the Os are connected to each other and switched to the POs of the Os.

Each PO of step 603 O is connected to the received security message, and replaces the PO of O and connects to the PO of each O and connects each other.

And each, to OT news. The WO replacement device, system and method provided by the present, OT East said, OT PO and each connected WO and each light, OT sheep O the same communication 仟 is a barrier, in the barrier OT protection control , OT's security control message to each PO and each connected, each

The POs are connected to each other and switched to each PO and connected to each other. Each PO is close to the O that sends the message to the end, and O Dong said that it is also controlled by the main PO barrier, to the protection of the barrier O, and each O The POs are switched to each PO and connected to each other, and the OTs sent to the end by the Tongyou are used. The OT to 仟 (including 仟 and branch 仟) faults are not used in the OT with the WO replacement device, system and method provided by the present. Complete each, and near the end of the O, so that O is not in trouble, but also get access, guarantee, guarantee OT and O with each other and often, in the O to the barrier, also with the end of the OT And the line of insurance, OT and O are all in the same place, to ensure that OT and O are the same.

Of course, the wood in this field can be different from the spirit of the line. If the repair of this book is in this

The requirements and their equivalents are also included in

Claims

Claim

1. Optical terminal (O T) in (W O ), which is characterized in that O T includes

, O T sheep (O) the same communication 仟 whether it is obstacle, in the obstacle, the control

The first control, the failure received at the root, the message to the PO and each connected, the main PO is connected and switched to the PO and each connected

And each, to the O message.

2, requirements 1 terminal, its special, the main / each PO and each connected, including physical interface, detector, W /

, a plurality of receivers, and a wavelength detector, an interchanger, and a rest control (O A ) respectively connected to the receivers, wherein

The detector, whether there is an uplink optical physical interface, in the

Barrier message

The wavelength detector is configured to receive light of a received phase wavelength, and to control light at an unphased wavelength

Barrier message a special converter that converts the phase wavelength of light into a PO AC

PO AC, the encapsulation and solution, the barrier information on O, and the PO AC barrier message to the control.

3. Require 2 terminals, which are characterized in that the first control is close to, and the photo-blocking message of the photodetector in the main PO is received, and the PO AC message in each PO and each connection is passed. The main PO will be connected

All of them are switched to the POs and connected

After receiving the wavelength barrier message of part of the wavelength detector of the primary PO and each connection or the PO AC barrier message of part of the PO AC, the PO AC message to each PO and each connection is connected to the primary PO and Each of the connected barriers is switched to the respective POs and connected.

4. The terminal 3 of claim 3 is characterized in that the main/each PO is connected to each other, including the optical unit and several

, to send each of the special converter's downstream and each light to the W / device

W / device, which is close to each light line

The unit sends the synthesized optical interface to O.

5. The terminal 4 of claim 4, wherein the POs are close to each other, and the PO communication received by the PO AC is The converter, W/user, and illuminator are sent to O.

6. O in W O , the special feature is that O includes

The second PO is connected to each other, and the connected W O and each light, the O T O the same communication, whether it is a barrier, the second control

The second control, the failure received at the root, the message to the second PO and each connected, the second PO is connected and switched to the second PO and each connected

The second POs are connected to each other, and the second PO is taken over and the second PO is connected to each other.

And each, to the news.

7. Require 6 sheep, the special feature is that the second/each O is connected, including the light receiving, the filter, the detector, the converter and the PO AC.

Receiving, receiving the downlink of the O T and transmitting the respective light to the filter

The filter for receiving light filtering

The detector, the filtered light, in the

, to the second control failure message

The special converter, for converting the filtered light into

The PO AC, in the special, encapsulation and solution, in the O T security information, to the second

PO AC barrier message

" .

8. Require 7 sheep, which is characterized in that the second control is close to the optical barrier message of the photodetector in the second PO and the connected, or the PO AC of the PO in the second PO and each The barrier message is sent to the second PO and each of the PO AC messages, and the second PO and all the switches are switched to the second POs and connected.

9. Requirement 8 The sheep, which is characterized by the second/each PO and each connected, including the Guangyou

The converter is connected to send the special light to the T

10. Require 9 sheep, the special feature is that the second POs are connected to each other, which is close to the protection message received by the PO AC, and the special converter and light are sent to the T

11. The system in W O, including O T and O, in particular, O T includes

, O T O, the same communication, whether it is a barrier, in the control

First, the barrier received by the root, the message to the PO and the connection, the main PO and each connected to each PO and each connected

The first POs are connected to each other, and the communication message received at the root replaces the primary PO and connects to the primary PO and connects each other. And each, the news

Including

The second PO is connected to each other, and the W O and the respective lights are connected.

, O T O, the same communication, whether it is a barrier, in the second control

And each, to the news.

12. The method in W O, in particular, the method includes

O T PO and each connected W O and each light

, O T O, the same communication, whether it is a barrier, in the barrier, the control of the O T

Each PO of the O T receives each received message, replaces the PO of the O T and connects each PO to each other.

And each, to O news.

13. The method of claim 12, wherein the method of controlling the receiving of the barrier, the message

Control the light that receives the PO and connects it The optical barrier message is sent to each PO and the PO AC message is connected to each other, and all the POs are connected to each PO and connected to each other.

14. The method in W O, the special method is that the PO of the method O is connected to the W O and each light

, O T O, the same communication, whether it is a barrier, the protection of the barrier

The protection of the O is controlled to be blocked,

The message is connected to each PO of O, and each PO of O is connected and switched to each PO of O.

And each, to the message.