CN116366157A

CN116366157A - Optical communication device and optical communication system

Info

Publication number: CN116366157A
Application number: CN202111617789.1A
Authority: CN
Inventors: 昌诗范; 李江; 高洪君
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-06-30
Also published as: WO2023125098A1

Abstract

The application discloses optical communication equipment and an optical communication system, and belongs to the technical field of optical transmission. The optical communication device comprises a plurality of circuit boards, a plurality of optical branching boards and a plurality of optical cross boards; each of the plurality of circuit boards is connected with each of the plurality of optical branching boards through the plurality of optical cross boards, and any two circuit boards are connected through the plurality of optical cross boards; the circuit board is used for being connected with another optical communication device, and the optical branching board is used for being connected with client equipment. By adopting the technical scheme, the use flexibility of the optical communication equipment can be enhanced, and the service transmission delay is reduced.

Description

Optical communication device and optical communication system

Technical Field

The present disclosure relates to the field of optical transmission technologies, and in particular, to an optical communication device and an optical communication system.

Background

Optical communication devices typically include a plurality of boards. Each board card is integrated with a line interface for connecting to another optical communication device and a tributary interface for connecting to a customer device. For example, the board card includes a line-side optical module serving as a line interface for connecting another optical communication device, and a customer-side optical module serving as a tributary interface for connecting a customer device. In this way, traffic signals may be transmitted between the line interface and the tributary interface of the board card. Although the service signal can be transmitted between the line interface and the branch interface of the same board card, the service signal cannot be transmitted between the line interface and the branch interface of different board cards, for example, the service signal cannot be transmitted between the line interface of one board card and the branch interface of another board card, which results in poor flexibility of use of the optical communication device.

Disclosure of Invention

The application provides an optical communication device and an optical communication system, which can solve the problem of poor flexibility of use of the optical communication device in the related technology.

In one aspect, an embodiment of the present application provides an optical communication device. The optical communication device includes a plurality of circuit boards, a plurality of optical branching boards, and a plurality of optical cross boards. Each of the plurality of circuit boards is connected to each of the plurality of optical branching boards through the plurality of optical cross boards. Any two circuit boards are connected through the plurality of optical cross boards. The circuit board is used for being connected with another optical communication device, and the optical branching board is used for being connected with client equipment.

In the optical communication device, any circuit board is connected with any optical branch board, so that service flows can be transmitted between any circuit board and any optical branch board, and the use flexibility of the optical communication device is enhanced. Moreover, the processing procedure of service signal scheduling through the optical cross board is simpler than the processing procedure of service signal scheduling through the electric cross board, so the delay time of the service signal of the optical communication equipment through the optical cross board is low.

In one possible implementation, each of the plurality of circuit boards is connected to each of the plurality of optical cross boards. Each of the plurality of optical cross plates is connected to each of the plurality of optical branching plates. Furthermore, connection of any circuit board and any optical branching board, connection between any two circuit boards, and connection between any two optical branching boards can be realized.

In one possible implementation manner, the circuit board comprises a first optical module, a line side processing unit, a second optical module and a line side optical switch which are sequentially connected. The optical branching plate includes an optical branching side light switch. The optical cross board comprises an optical cross side light switch. The first optical module is used for being connected with another optical communication device. The line side light switch is connected with the optical cross side light switch. The optical cross side light switch is connected with the optical branch side light switch.

In the solution shown in the present application, the line-side processing unit is a functional unit of a first processing module of the circuit board, and the first processing module may be, for example, a chip of the circuit board. The circuit side light switch is in butt joint with the optical cross side light switch, and further, the butt joint of the circuit board and the optical cross board is realized. The optical cross side light switch is in butt joint with the optical branch side light switch, and further, the butt joint of the optical cross plate and the optical branch plate is realized.

In one possible embodiment, the plurality of optical branching plates includes a first optical branching plate and a second optical branching plate. The second optical branching board further comprises a third optical module, a conversion unit and a fourth optical module. The optical branch side light switch, the third optical module, the conversion unit and the fourth optical module of the second optical branch plate are sequentially connected. The protocols of the second optical module and the third optical module are the same, and the protocols of the fourth optical module and the optical module connected with the client device are the same.

In the solution shown in the present application, the conversion unit is a functional unit of a second processing module of the optical branching board, which may be a chip, for example. The conversion unit is used for mutually converting the protocol of the third optical module and the protocol of the fourth optical module. For example, the protocol of the third optical module is converted into the protocol of the fourth optical module, so that the connection with the client device is successful.

In one possible embodiment, any two optical branching plates are connected by the plurality of optical cross plates.

According to the scheme, each of the plurality of optical branching plates is connected with each of the plurality of optical cross plates, so that any two optical branching plates can be connected with the same optical cross plate, and further, the two optical branching plates are connected. In this way traffic can be transmitted between any two optical branching plates.

In one possible embodiment, the optical communication device further comprises a plurality of electrical bypass boards and a plurality of electrical cross boards. Each of the plurality of circuit boards is connected to each of the plurality of electrical bypass boards through the plurality of electrical cross boards. The electrical bypass board is configured to connect with the client device.

According to the scheme, the optical communication equipment not only comprises the optical cross board, but also comprises the electric cross board, so that the optical communication equipment has the optical cross function and the electric cross function, and the optical communication equipment with photoelectric hybrid scheduling is formed.

In one possible embodiment, each of the plurality of circuit boards is connected to each of the plurality of electrical bypass boards through the plurality of electrical cross boards and the plurality of optical cross boards.

In the solution shown in the present application, each of the plurality of circuit boards is connected to each of the plurality of optical cross boards. Each of the plurality of optical cross plates is connected to each of the plurality of electrical cross plates. Each of the plurality of electrical cross plates is connected to each of the plurality of electrical bypass plates. Thus, any circuit board is connected with any electric branch board, and any two electric branch boards also have a connection relationship.

In one possible implementation manner, the circuit board includes a first optical module, a line-side processing unit, a first connection unit, a fifth optical module, and a line-side optical switch that are sequentially connected. The optical cross board comprises an optical cross side light switch. The electric cross board comprises an electric cross side light switch, a sixth optical module and an electric cross side processing unit which are connected in sequence. The electrical branching plate includes a second connection unit and a seventh optical module connected. The first optical module is used for being connected with the other optical communication equipment, and the line side optical switch is connected with the optical cross side optical switch. The optical cross side light switch is connected with the electric cross side light switch. The electrical crossover side processing unit is connected to the second connection unit. The seventh optical module is configured to connect with the client device.

In the solution shown in the present application, the first connection unit is a functional unit of the first processing module of the circuit board, and is used for connecting with the processing unit on the electrical cross side of the electrical cross board. The line side light switch is in butt joint with the optical cross side light switch, and then the circuit board is connected with the optical cross plate. The optical cross side light switch is in butt joint with the electric cross side light switch, and then the optical cross plate is connected with the electric cross plate. The second connection unit is a functional unit of the third processing module of the electric branch board, and is used for being connected with the electric cross side processing unit of the electric cross board, and further, the electric cross board is connected with the electric branch board.

In one possible embodiment, the circuit board further comprises a selection switch unit. The selection switch unit is respectively connected with the line side processing unit and the first connection unit, and is also connected with an optical module connected with the line side optical switch. The selection switch unit is used for selecting and connecting a path between the first connection unit and the line side processing unit.

The number of the optical modules connected with the line-side optical switch can be one or more. The plurality of optical modules are used for photoelectric conversion, for example, for converting an electrical signal received from the selection switch unit into an optical signal, and then transmitting to the line-side optical switch. For another example, the optical modules are used to convert optical signals received from the line-side optical switches into electrical signals and then transmit the electrical signals to the selector switch unit.

According to the scheme, when the business flows away from the optical cross board and does not flow away from the optical cross board, the selection switch unit can be selectively connected with the path of the line side processing unit and disconnected with the path of the first connection unit. When the traffic flows away from the electrical cross board without going away from the optical cross board, the selection switch unit may select a path to be connected to the first connection unit and a path to be disconnected from the line side processing unit. When a part of the traffic flows away from the optical cross board and another part of the traffic flows away from the electrical cross board, the selection switch unit may select to be connected to the path of the line side processing unit and also to the path of the first connection unit. Thus, the flexibility of service circulation can be improved, and the use flexibility of the optical communication equipment is further enhanced.

In one possible implementation, each of the plurality of circuit boards is directly electrically connected to each of the plurality of electrical cross boards. Each of the plurality of electrical cross plates is directly connected to each of the plurality of electrical bypass plates.

According to the scheme, connection can be achieved between the circuit board and the electric branch circuit board only by means of the electric cross board. For example, the circuit board is electrically connected to all of the electrical cross boards, which in turn are connected to all of the electrical branch boards, which in turn are connected to the circuit board. The circuit board is connected to the electrical cross board, for example, the first connection unit of the circuit board is electrically connected to the electrical cross side processing unit of the electrical cross board. The electrical cross board is connected to the electrical bypass board, for example, the electrical cross side processing unit of the electrical cross board is electrically connected to the second connection unit of the electrical bypass board.

In one possible embodiment, the plurality of electrical cross boards includes at least one spare electrical cross board for initiating operation when the primary electrical cross board fails.

The solution shown in the present application, for example, is performed by an electric cross plate 1+1, 1: n, or, m: n, etc. Wherein, 1+1 is an electric cross board with one electric cross board as main component, which is responsible for normal operation, and another electric cross board is used as standby electric cross board, when the main component fails, the standby electric cross board starts up operation. 1: n is the electric cross board with n electric cross boards as main use, which is responsible for normal operation, and one electric cross board is used as standby electric cross board. m: n is the electric cross board with n electric cross boards as main use, and is responsible for normal operation, and m electric cross boards are used as standby electric cross boards.

In one possible embodiment, the plurality of optical cross boards includes at least one spare optical cross board for initiating operation when the primary optical cross board fails.

The solution shown in the present application, for example, the optical cross plate performs 1+1, 1: n, or, m: n, etc. Wherein 1+1 is a light cross board with one light cross board as main light cross board, which is responsible for normal operation, and the other light cross board is used as standby light cross board. 1: n is the light cross board with n light cross boards as main use, which is responsible for normal operation, and one light cross board is used as standby light cross board. m: n is the light cross board with n light cross boards as main use, and is responsible for normal operation, and m light cross boards are used as standby light cross boards.

In another aspect, an embodiment of the present application further provides an optical communication system, where the optical communication system includes a first client device, a second client device, and at least one optical communication device described above. The first client device is connected to a tributary board of one of the at least one optical communication device and the second client device is connected to a tributary board of one of the at least one optical communication device, the tributary board comprising at least an optical tributary board.

According to the scheme, one of the first client device and the second client device is a transmitting end, the other is a receiving end, and communication connection is established between the first client device and the second client device through at least one optical communication device so as to achieve interaction. The optical communication devices to which the first client device and the second client device are connected may be the same optical communication device or may be different optical communication devices.

In one possible implementation, the first client device and the second client device are connected to different tributary boards of the same optical communication device, respectively.

In the solution shown in the present application, the first client device and the second client device are relatively close together, such as in the same building or in the same cell. The first client device and the second client device interact through an optical communication device. For example, a first client device is connected to one tributary board of an optical communication device and a second client device is connected to another tributary board of the optical communication device.

In one possible implementation, the first client device and the second client device are connected to tributary boards of different optical communication devices, respectively. For example, the first client device is connected to one of the tributary boards of a first one of the at least one optical communication device and the second client device is connected to one of the tributary boards of a second one of the at least one optical communication device. The first optical communication device and the second optical communication device are different optical communication devices, and a circuit board of the first optical communication device is connected with a circuit board of the second optical communication device.

In the solution shown in the present application, the circuit board of the first optical communication device and the circuit board of the second optical communication device may be connected directly or indirectly. For example, if the first client device and the second client device establish a communication connection through two optical communication devices, one board of the first optical communication device and one board of the second optical communication device are directly connected. If the first client device and the second client device establish communication connection through more than two optical communication devices, then one circuit board of the first optical communication device and one circuit board of the second optical communication device are connected through at least one optical communication device, and the first optical communication device, the second optical communication device and the at least one optical communication device are connected through the circuit boards. For example, one wiring board of the first optical communication device is connected to one wiring board of a third optical communication device of the at least one optical communication device, and the other wiring board of the third optical communication device is connected to one wiring board of the second optical communication device.

Drawings

Fig. 1 is a schematic diagram of a framework of an optical communication device provided in the present application;

fig. 2 is a schematic diagram of an optical communication device including an optical cross-bar provided in an embodiment of the present application;

fig. 3 is a schematic diagram of an optical communication device in which a part of a circuit board is connected to a part of an optical cross board according to an embodiment of the present application;

fig. 4 is a schematic diagram of an optical communication device including at least one set of boards according to an embodiment of the present application;

fig. 5 is a schematic view of an optical communication apparatus including a first optical branching plate and a second optical branching plate provided in an embodiment of the present application;

fig. 6 is a schematic diagram of an optical communication device including an optical cross board and an electrical cross board, with the optical cross board and the electrical cross board having a connection relationship, provided in an embodiment of the present application;

fig. 7 is a schematic diagram of an optical communication device with a circuit board having a selection switch unit according to an embodiment of the present application;

fig. 8 is a schematic diagram of an optical communication device with one optical module connected to a line-side optical switch in a circuit board according to an embodiment of the present application;

fig. 9 is a schematic diagram of an optical communication device including an optical cross board and an electrical cross board, where the optical cross board and the electrical cross board do not have a connection relationship, provided in an embodiment of the present application;

Fig. 10 is a schematic diagram of an optical communication device including an optical amplifier according to an embodiment of the present application;

fig. 11 is a schematic diagram of a traffic flow transmitted in an optical communication device including an optical cross board according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a traffic flow in an optical communication device including an optical crossbar board and an electrical crossbar board, where the optical crossbar board and the electrical crossbar board have a connection relationship;

FIG. 13 is a schematic diagram of a traffic flow in an optical communication device including an optical crossbar board and an electrical crossbar board, where the optical crossbar board and the electrical crossbar board do not have a connection relationship;

fig. 14 is a schematic diagram of an optical communication system in which a first client device and a second client device are connected through an optical communication device according to an embodiment of the present application;

fig. 15 is a schematic diagram of an optical communication system in which a first client device and a second client device are connected through two optical communication devices according to an embodiment of the present application;

fig. 16 is a schematic diagram of an optical communication system in which a first client device and a second client device are connected through three optical communication devices according to an embodiment of the present application.

Legend description:

01. a cabinet; 02. a board card; 1. a circuit board; 11. a first optical module; 12. a line-side processing unit; 13. a second optical module; 14. a line side light switch; 15. a first connection unit; 16. a fifth optical module; 17. a selection switch unit; 18. a line-side amplifier; 2. an optical branching board; 2A, a first light branching plate; 2B, a second optical branching plate; 21. an optical branch side light switch; 22. a third optical module; 23. a conversion unit; 24. a fourth optical module; 25. an optical branch side amplifier; 3. an optical cross plate; 3A, a first optical cross plate; 3B, a second optical cross plate; 31. an optical cross side light switch; 4. an electrical bypass board; 41. a second connection unit; 42. a seventh optical module; 5. an electrical cross plate; 51. an electrical cross-point light switch; 52. a sixth optical module; 53. an electrical crossover side processing unit; 54. an electrical crossover side amplifier; 100. a first client device; 200. a second client device; 300. an optical communication device; 301. a first optical communication device; 302. a second optical communication device; 303. and a third optical communication device.

Detailed Description

While the description of the present application will be presented in conjunction with some embodiments, it is not intended that the features of this application be limited to only this embodiment. Rather, the purpose of the description presented in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the present application. The following description contains many specific details in order to provide a thorough understanding of the present application. The present application may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the focus of the application. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In the present embodiments, the terms "first," "second," "third," "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third" and a fourth "may explicitly or implicitly include one or more such feature.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that in the description of the embodiments of the present application, the term "connected" should be interpreted broadly unless explicitly stated or limited otherwise. For example, "connected" may be removably connected, or non-removably connected; may be directly connected or indirectly connected through an intermediate medium. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one example," "in another example," "in one embodiment," "in another embodiment," and the like in various places throughout this specification are not necessarily all referring to the same embodiment, but mean "one or more, but not all, embodiments" unless expressly specified otherwise.

The embodiment of the application provides optical communication equipment. The optical communication device may also be referred to as an optical transmission device. For example, it may be a wavelength division device or an optical transport network (optical transport network, OTN) device, etc. The main task of the optical communication device is to receive a service flow generated by one client device, and transmit the service flow to another client device through the optical communication device and a propagation medium (such as an optical fiber, a cable, an electromagnetic wave and the like) connected with the optical communication device. Since the two client devices are connected by at least one optical communication device, the optical communication device will include two interfaces, a user-network interface (user-network interface, UNI) for connecting to the client device and a network-network interface (network to network interface, NNI) for connecting to the other optical communication device. For example, one client device is connected to a user-network interface of one optical communication device, and the other client device is connected to a user-network interface of another optical communication device, the two optical communication devices being connected by a network-network interface. As for a specific connection relationship between two client devices and at least one optical communication device, reference may be made to the following description of an optical communication system. The client device is a device served by the optical communication device, for example, a router or a switch. In the field of optical transmission, a user-network interface is generally referred to as a tributary interface, and a network-network interface is generally referred to as a line interface.

Fig. 1 is a schematic diagram of an optical communication apparatus. The optical communication device may be a card-plugging device, where the optical communication device includes a cabinet 01 and a plurality of boards 02, where the boards 02 may also be called line cards or service boards, the cabinet 01 includes a plurality of slots, the boards 02 are inserted into the slots, and the boards 02 can also be pulled out from the slots.

According to whether the line interface and the branch interface of the optical communication device are integrated on the same board, the optical communication device can be divided into an integrated optical communication device and a separated optical communication device. The integrated optical communication device is an optical communication device with a line interface and a branch interface integrated on the same board card, and the separated optical communication device is an optical communication device with a line interface and a branch interface integrated on different board cards.

For integrated optical communication devices, for example, a board card of an optical communication device includes both a line interface and a tributary interface. The optical communication equipment has the advantages of simple structure, low cost and low power consumption. However, the optical communication device does not have a cross-board scheduling function, and has poor flexibility in use. For example, a service flow is input from a tributary interface of one board card, can only be output from a line interface of the board card, and cannot be output from a line interface of another board card, so that the flexibility of use of the optical communication device is poor. In addition, if one board card fails or an optical fiber connected with the board card fails, the optical communication device will cause communication interruption of a communication link where the board card is located.

For a split optical communication device, for example, the line interface is integrated on one board and the tributary interface is integrated on another board. The board card of the integrated circuit interface may be referred to as a circuit side service board (circuit board for short), and the board card of the integrated tributary interface may be referred to as a tributary side service board (tributary board for short). In order to connect the circuit board and the tributary board, the optical communication device comprises an electrical cross board, which may also be called an electrical switching board, mainly responsible for the forwarding of signals between boards. Since the electric cross board performs electric cross dispatching, the circuit board and the electric cross board are electrically connected, and the circuit board needs to be provided with an electric connection functional unit for connecting with the electric cross board, and the circuit board also needs to be provided with an electric connection functional unit for connecting with the electric cross board. The branching plate may be referred to herein as an electrical branching plate, and is also referred to herein for the purpose of distinguishing from the optical branching plate below.

Above-mentioned disconnect-type optical communication equipment, every circuit board can be connected with all electric cross boards electricity, and every electric cross board can be connected with all branch road boards electricity, and then makes every circuit board be connected with all electric branch road boards electricity, and every electric branch road board is connected with all circuit boards electricity, also electrically connected between arbitrary two circuit boards to and also electrically connected between arbitrary two electric branch road boards.

Therefore, the separated optical communication equipment can input service flows from the branch interface of one board card and output the service flows from the line interface of the other board card, so that the cross-board service scheduling can be realized, and the use flexibility is improved. However, the scheduling between the circuit boards and the electric branch boards all need to pass through the electric cross boards, so that the processing pressure of the electric cross boards is high, and the chip capacity, the cost and the power consumption of the electric cross boards are correspondingly increased. Further, in the separate optical communication device, there are cases where delay time increases due to the number of electric cross boards, electric connection functional units, and the like, as compared with the integrated optical communication device. In addition, since the electrical connection is usually implemented by a trace on the back plane of the optical communication device, or by a connector, in either way, the difficulty in improving the transmission rate is great, for example, when upgrading the transmission rate of the optical communication device, the back plane needs to be replaced.

The optical communication equipment provided by the application can realize cross-board scheduling, can relieve the processing pressure of the electric cross board, and can also reduce delay and improve the transmission rate. The optical communication apparatus shown in the present application will be described in detail below.

As shown in fig. 2, the optical communication apparatus includes a plurality of wiring boards 1, a plurality of optical branching boards 2, and a plurality of optical cross boards 3. The number of the three is not necessarily equal, but may be equal, and the number of the three is not limited in this embodiment. The circuit board 1 is used for connecting with another optical communication device as described above, that is, a board card including a circuit interface, where the role of the first optical module 11 in the circuit board 1 in fig. 2 is the circuit interface. The optical branching board 2 is as described above, i.e. a board card comprising a branching interface for connection to a client device, and as shown in fig. 2, the role that the optical branching side light switch 21 plays in the optical branching board 2 is a branching interface. The optical cross board 3, which may also be referred to as an optical switch board, is used to implement cross-scheduling of optical links, where the cross-scheduling of optical links may be wavelength scheduling and/or port scheduling.

Regarding the connection manner among the wiring board 1, the optical branching board 2 and the optical cross board 3. As shown in fig. 2, each of the plurality of circuit boards 1 is connected to each of the plurality of optical cross boards 3, and each of the plurality of optical cross boards 3 is connected to each of the plurality of optical branching boards 2, so that connection of any circuit board 1 and any optical branching board 2 can be achieved, connection of any two circuit boards 1 can be achieved, and connection of any two optical branching boards 2 can be achieved.

Of course, a part of the wiring board 1 may be connected to each of the plurality of optical branching boards 2 through a part of the optical cross board 3, and another part of the wiring board 1 may be connected to each of the plurality of optical branching boards 2 through another part of the optical cross board 3. For example, two optical cross boards 3 are exemplified, which are respectively denoted as a first optical cross board 3A and a second optical cross board 3B, and as shown in fig. 3, each of a part of the wiring boards 1 is connected to each of the plurality of optical cross boards 2 through the first optical cross board 3A, and each of the other part of the wiring boards 1 is connected to each of the plurality of optical cross boards 2 through the second optical cross board 3B. In this embodiment, how each circuit board 1 is connected to each of the plurality of optical branching boards 2 through the plurality of optical cross boards 3 is not particularly limited, and it is sufficient that each of the plurality of circuit boards 1 has a connection relationship with all the optical branching boards 2.

It can be seen that the connection between the circuit board 1 and the optical branching board 2 can be achieved by a plurality of optical cross boards 3. The connection between the wiring board 1 and the wiring board 1 can be achieved by a plurality of optical cross boards 3. The connection between the optical branching plate 2 and the optical branching plate 2 may also be achieved by a plurality of optical cross plates 3. Furthermore, the service flow can be transmitted between the circuit board 1 and the optical branching board 2, and also can be transmitted between different circuit boards 1 and also can be transmitted between different optical branching boards 2, so that the service transmission paths are obviously increased compared with the integrated optical communication equipment, and the use flexibility of the optical communication equipment is further improved.

It should be noted that the connection between the wiring board 1 and the optical cross board 3, and the connection between the optical cross board 3 and the optical branching board 2 are butt joints for achieving optical signal communication.

It should be noted that the optical communication device includes at least one set of boards, each of the above-described plurality of circuit boards 1 is connected to each of the plurality of optical branching boards 2 via the plurality of optical cross boards 3, and refers to a connection relationship of the circuit boards 1, the optical branching boards 2, and the optical cross boards 3 within a certain set (which may be referred to as a target set) of the at least one set of boards of the optical communication device. For example, as shown in fig. 4, the target group includes a plurality of wiring boards 1, a plurality of optical branching boards 2, and a plurality of optical cross boards 3, in the target group, each of the plurality of wiring boards 1 is connected to each of the plurality of optical cross boards 3, each of the plurality of optical cross boards 3 is connected to each of the plurality of optical branching boards 2, and thus each of the plurality of wiring boards 1 and each of the plurality of optical branching boards 2 are realized, which are connected by the plurality of optical cross boards 3. The connection relationship among the circuit board 1, the optical cross board 3, and the optical branching board 2 in the other groups except the target group may be the same as or different from the target group, and the present embodiment is not limited thereto. The connection relationship between the circuit board 1 and the optical cross board 3, and between the optical cross board 3 and the optical branching board 2, which do not belong to the same group, may be provided, or may not be provided, and this embodiment is not limited thereto, and may be flexibly set according to circumstances. For ease of description, the following description may be presented in terms of boards in a target group in an optical communication device.

Each of the plurality of wiring boards 1, which will be described later, is connected to each of the plurality of electric branching boards 4 through the plurality of electric cross boards 5, and each of the plurality of wiring boards 1 is connected to each of the plurality of electric branching boards 4 through the plurality of optical cross boards 3 and the plurality of electric cross boards 5, and also refers to the connection relationship between the wiring boards 1, the electric cross boards 5, and the electric branching boards 4 in the target group, as well as the connection relationship between the boards in the different groups, and the connection relationship between the boards in the other groups other than the target group, which are not particularly limited in this embodiment.

As can be seen from the above, in the optical communication device, each circuit board 1 and each optical branching board 2 have a connection relationship therebetween, so that traffic can be transmitted between any circuit board 1 and any optical branching board 2, thereby enhancing the flexibility of use of the optical communication device. Moreover, the processing procedure of service signal scheduling through the optical cross board is simpler than the processing procedure of service signal scheduling through the electric cross board, so the optical communication equipment reduces the delay of service signal processing.

In order to achieve the connection between the wiring board 1 and the optical cross board 3 and the connection between the optical cross board 3 and the optical branching board 2, accordingly, as shown in fig. 2, the wiring board 1 includes a first optical module 11, a wiring-side processing unit 12, a second optical module 13, and a wiring-side optical switch 14, which are sequentially connected. The optical branching plate 2 includes an optical branching side light switch 21, and the optical cross plate 3 includes an optical cross side light switch 31. The first optical module 11 is used for being connected with another optical communication device, the line side optical switch 14 is connected with the optical cross side optical switch 31, and the optical cross side optical switch 31 and the optical branch side optical switch 21 are connected.

In one example, the first optical module 11 is a transceiver optical module, and is configured to connect with another optical communication device, so as to send a service signal to the other optical communication device, or receive a service signal sent by the other optical communication device. For example, the first optical module 11 may convert an optical signal received from another optical communication apparatus into an electrical signal and transmit to the line-side processing unit 12. As another example, the first optical module 11 may convert an electrical signal received from the line-side processing unit 12 into an optical signal and transmit to another optical communication device.

In one example, fig. 2 is a logic diagram of an optical communication device. The line-side processing unit 12 is a functional unit of a first processing module of the line board 1, which may be, for example, a chip of the line board 1. The functions of the line side processing unit 12 may include at least the complex de/Jie Fujie, mapping/demapping of the OTN/synchronous digital hierarchy (synchronous digital hierarchy, SDH), and packet processing (e.g., message parsing, table lookup forwarding, and traffic management). The specific function of the line side processing unit 12 is not limited in this embodiment, and the function thereof may be set according to actual situations.

In one example, since the signal output by the circuit board 1 to the optical cross board 3 is an optical signal, as shown in fig. 2, the circuit board 1 further includes a second optical module 13, and the second optical module 13 is also a transceiver optical module for performing conversion between the optical signal and the electrical signal. For example, the second optical module 13 may convert the electric signal output from the line-side processing unit 12 into an optical signal, and transmit the optical signal to the optical cross-side optical switch 31 of the optical cross board 3 through the line-side optical switch 14. For another example, the second optical module 13 may convert an optical signal received from the line-side optical switch 14 into an electrical signal and transmit the electrical signal to the line-side processing unit 12. As shown in fig. 2, the optical cross-point light switch 31 of the optical cross plate 3 and the optical branch-point light switch 21 of the optical branch plate 2 are connected. Thus, as shown in fig. 2, between the circuit board 1 and the optical branching board 2, a service signal may be transmitted by means of the optical cross board 3, for example, the circuit board 1 transmits a service signal to the optical branching board 2, or the optical branching board 2 transmits a service signal to the circuit board 1. Between different circuit boards 1, the service signals can also be transmitted by means of the optical cross board 3. Between the different optical branching plates 2, traffic signals can also be transmitted by means of the optical cross plate 3.

In one example, in order to adapt an optical module to which the client device is connected, accordingly, as shown in fig. 5, a first optical branching board 2A and a second optical branching board 2B may be included in the plurality of optical branching boards 2. The first optical branching plate 2A includes the optical branching side light switch 21 described above. The second optical branching plate 2B includes not only the optical branching side light switch 21 described above, but also a third optical module 22, a conversion unit 23, and a fourth optical module 24, and the optical branching side light switch 21, the third optical module 22, the conversion unit 23, and the fourth optical module 24 of the second optical branching plate 2B are sequentially connected.

The protocols of the second optical module 13 and the third optical module 22 are the same, and the protocols of the fourth optical module 24 and the optical module to which the client device is connected are the same.

In one example, the protocol of the optical module, and the protocol of the optical module mentioned in this scenario, may be, for example, a standard protocol to which the type of optical interface of the optical module belongs. The protocols are identical, and for example, the transmission rate, the number of fiber channels, the optical power, the spectrum supported, and the like may be identical, respectively. The specific protocol of the optical module may refer to a standard protocol corresponding to various services, for example, the ethernet service may refer to an IEEE802.3 standard protocol, and the OTN service may refer to a g.709 standard protocol.

In one example, the fourth optical module 24 may be a pluggable optical module to facilitate adapting optical modules to which various types of client devices are connected. The conversion unit 23 is a functional unit of a second processing module of the optical branching plate 2, which may be a chip, for example. The conversion unit 23 is connected between the third optical module 22 and the fourth optical module 24, and is configured to implement protocol conversion between the third optical module 22 and the fourth optical module 24, for example, the protocol of the third optical module 22 may be converted into the protocol of the fourth optical module 24, or the protocol of the fourth optical module 24 may be converted into the protocol of the third optical module 22. For example, if the transmission rate of the optical module connected to the client device is 4 25G channels, and the transmission rates of the second optical module 13 and the third optical module 22 are 1 100G channels, the conversion unit 23 may convert the 1 100G channels into 4 25G channels, and output the 4G channels to the fourth optical module 24, where the transmission rate of the fourth optical module 24 is the same as the transmission rate of the optical module connected to the client device, so that the optical module can interface with the client device to complete the transmission of the optical signal.

Thus, in application, if the protocol of the second optical module 13 and the protocol of the optical module to which the client device is connected are the same, for example, the transmission rates of both are the same, then the traffic signal may be transmitted in the first optical branching board 2A. If the protocol of the second optical module 13 is different from the protocol of the optical module to which the client device is connected, the service signal may be transmitted in the second optical branching board 2B, thereby improving the flexibility of use of the optical communication device.

Based on the above, the procedure of performing the service scheduling by the optical communication device performing the service scheduling by the optical cross board 3 can be seen from fig. 2, and the procedure can be as follows for the service flow transmitted from another optical communication device to the client device. The other optical communication device transmits an optical signal to the first optical module 1 of the wiring board 1. After the first optical module 1 of the circuit board 1 receives the optical signal, the optical signal may be converted into an electrical signal and transmitted to the first processing module of the circuit board 1. The line side processing unit 12 of the first processing module processes the received electrical signal and sends the processed electrical signal to the second optical module 13 of the circuit board 1. The second optical module 13 converts the electrical signal into an optical signal and sends it to the optical branching board 2 via the line side optical switch 14. Wherein if the protocol of the optical module to which the client device is connected is the same as the protocol of the second optical module 13, the optical cross board 3 transmits an optical signal to the first optical branching board 2A, via the optical branching side light switch 21 of the first optical branching board 2A to the client device. Whereas if the protocol of the optical module to which the client device is connected is different from the protocol of the second optical module 13, the optical cross board 3 transmits the optical signal to the second optical branching board 2B via the fourth optical module 24 of the second optical branching board 2B to the client device. For the procedure of the traffic flow transmitted by the client device to another optical communication device, the reverse procedure of the above procedure may be referred to the above description, and will not be repeated here.

Scheduling procedures for traffic flows transmitted by one optical communication device (e.g., a first optical communication device) to another optical communication device (e.g., a second optical communication device). The first optical communication device transmits an optical signal to the first optical module 1 of the wiring board 1 connected to the first optical communication device. After the first optical module 1 of the circuit board 1 receives the optical signal, the optical signal may be converted into an electrical signal and transmitted to the first processing module of the circuit board 1. The line side processing unit 12 of the first processing module processes the received electrical signal and sends the processed electrical signal to the second optical module 13 of the circuit board 1. The second optical module 13 converts the electrical signal into an optical signal and transmits the optical signal to the wiring board 1 connected to the second optical communication apparatus via the line side optical switch 14. The second optical module 12 of the circuit board 1 receives the optical signal, converts the optical signal into an electrical signal, and sends the electrical signal to the circuit-side processing unit 12. And then, after the processing is completed via the line-side processing unit 12, transmitted to the first optical module 11, and transmitted to the second optical communication apparatus via the first optical module 11.

The above is a scheme that the optical communication device performs service scheduling via the optical cross board 3, and the optical communication device may perform service scheduling via the electrical cross board.

As shown in fig. 6, the optical communication apparatus includes not only a plurality of wiring boards 1, a plurality of optical branching boards 2, and a plurality of optical cross boards 3, but also a plurality of electrical branching boards 4 and a plurality of electrical cross boards 5. Wherein both the optical branching board 2 and the electrical branching board 4 are used for connection with a client device. Each wiring board 1 is connected to each of the plurality of electric branching boards 4 through a plurality of electric cross boards 5.

In one example, the connection of the wiring board 1 and the electrical branching board 4 may be achieved by means of an electrical cross board 5 and an optical branching board 3. As shown in fig. 6, each wiring board 1 is connected to each of the plurality of optical cross boards 3, each optical cross board 3 is connected to each of the plurality of electrical cross boards 5, and each electrical cross board 5 is connected to each of the plurality of electrical branch boards 4. In this way, it is achieved that each circuit board 1 is connected to all the electric branch boards 2, and that each electric branch board 2 is connected to all the circuit boards 1.

In order to achieve the above connection, accordingly, as shown in fig. 6, the wiring board 1 includes not only the first optical module 11, the line-side processing unit 12, and the line-side optical switch 14, but also the first connection unit 15 and the fifth optical module 16. The first connection unit 15 is a functional unit of a first processing module of the circuit board 1, for example, the first processing module may be a chip of the circuit board 1, the first connection unit 15 is used for being connected with the electrical cross-side processing unit 53 of the electrical cross board 5, and the specific function of the first connection unit 15 depends on the functions of the circuit side processing unit 12 and the electrical cross-side processing unit 53, and is described below after the electrical cross-side processing unit 53 is led out.

As shown in fig. 6, the first optical module 11, the line-side processing unit 12, the second optical module 13, and the line-side optical switch 14 are connected in this order, and the first optical module 11, the line-side processing unit 12, the first connection unit 15, the fifth optical module 16, and the line-side optical switch 14 are also connected in this order. Then, the circuit board 1 includes two branches, one branch is a path where the line side processing unit 12 and the second optical module 13 are located, and may be denoted as a first path, and the other branch is a path where the line side processing unit 12 and the first connection unit 15 are located, and may be denoted as a second path, and may be denoted as a first path in fig. 6, and may be denoted as a (1) symbol in fig. 6. Wherein the first path (1) is for connection with the optical branching plate 2 through the optical cross plate 3 and the second path (2) is for connection with the electrical branching plate 4 through the optical cross plate 3 and the electrical cross plate 5.

As shown in fig. 6, the optical cross plate 3 still includes an optical cross-side light switch 31. As for the optical branching board 2, as still described above, a first optical branching board 2A and a second optical branching board 2B may be included, and modules included in the first optical branching board 2A and the second optical branching board 2B are the same as those described above, and will not be described again.

For the newly added electric cross board 5, as shown in fig. 6, since it is necessary to interface with the optical cross side optical switch 31 of the optical cross board 3, the electric cross board 5 needs to include an optical switch, denoted as an electric cross side optical switch 51, and since it is necessary to perform electric cross scheduling, it is necessary to include an electric cross side processing unit 53. The electrical cross-side processing unit 53 is a functional unit of a fourth processing module of the electrical cross-board 5, which may be, for example, a chip of the electrical cross-board 5. Since the electric cross side processing unit 53 processes electric signals, and the electric cross side optical switch 51 is responsible for receiving and transmitting optical signals, the electric cross board 5 further includes a sixth optical module 52. It can be seen that, for the electric cross board 5, the electric cross side light switch 51, the sixth light module 52 and the electric cross side processing unit 53 are sequentially connected, and the electric cross side light switch 51 is responsible for interfacing with the light branch side light switch 31 of the light branch board 3.

It is to be noted that, as shown in fig. 6, the electric cross-side light switch 51, the sixth light module 52, and the electric cross-side processing unit 53 are integrated on one board, which is the electric cross board 5. In another example, the electric cross-side light switch 51, the sixth light module 52 and the electric cross-side processing unit 53 may also be integrated on different boards, for example, the three are respectively on one board, the electric cross-side light switch 51 occupies one board separately, the sixth light module 52 occupies one board separately, and the electric cross-side processing unit 53 also occupies one board separately. For another example, two of them are integrated on one board and the other occupies one board alone, as to which two are integrated on one board. In this embodiment of the present application, the electric cross side light switch 51, the sixth optical module 52 and the electric cross side processing unit 53 are integrated on one board, or integrated on different boards, which is not limited, and may be flexibly selected according to practical situations, and the drawings in this application example may be integrated on one board by three.

For the newly added electric branching plate 4, as shown in fig. 6, in order to connect with the electric cross side processing unit 53 of the electric cross plate 5, it is necessary to include the second connection unit 41, the second connection unit 41 being one functional unit of the third processing module of the electric branching plate 4, which may be, for example, a chip of the electric branching plate 4. Whereas the second connection unit 41 is responsible for receiving and transmitting electrical signals, the electrical branch board 4 and the client device transmit optical signals, so that the electrical branch board 4 further comprises a seventh optical module 42. It can be seen that the electrical branching board 4 comprises a connected second connection unit 41 and a seventh optical module 42, wherein the second connection unit 41 is responsible for electrical connection with the electrical cross-side processing unit 53 of the electrical cross board 5 and the seventh optical module 42 is responsible for interfacing with the client device.

The above is an explanation of the respective modules included in the wiring board 1, the optical branching board 2, the optical cross board 3, the electrical branching board 4, and the electrical cross board 5, and the connection relation, and the functions of the wiring-side processing unit 12, the first connection unit 15, the electrical cross-side processing unit 53, and the electrical branching board 4 will be explained below.

For the line side processing unit 12, it is first necessary to have a framing function for data transmission with the optical branching board 2. Next, the line side processing unit 12 may have a mapping function. The mapping function may also be integrated in the electrical bypass board 4. Finally, the line side processing unit 12 may also have service processing functions, such as OTN/SDH multiplexing/Jie Fujie, mapping/demapping, and packet processing (e.g. message parsing, table lookup forwarding, and traffic management). The service processing functions of the line side processing unit 12 may be integrated in the electrical cross-side processing unit 53 of the electrical cross-board 5.

For the electric cross-side processing unit 53, it is first necessary to have an electric cross-dispatching function in order to perform electric cross-dispatching. Next, the above-described service processing function may be provided.

For the electric branch board 4, a mapping function may be provided, and if the electric branch board 4 is provided with the mapping function, the third processing module of the electric branch board 4 further includes an electric branch side processing unit to perform the mapping function. Whereas if the mapping function of the electrical bypass board 4 is integrated on the line side processing unit 12, the third processing module may not comprise an electrical bypass side processing unit.

It can be seen that the above-mentioned service processing functions may be integrated on the line side processing unit 12 of the line board 1 or on the electrical cross side processing unit 53 of the electrical cross board 5. The mapping function described above may be integrated in the line-side processing unit 12 or in the electrical bypass-side processing unit of the electrical bypass board 4.

As for the first connection unit 15, if the line side processing unit 12 has only the framing function, or has the framing and mapping functions, the first connection unit 15 functions as an adapted connection with the electrical cross side processing unit 53. If the line side processing unit 12 has the framing function and the service processing function described above, or has the framing and mapping functions and the service processing function described above, the first connection unit 15 is configured to perform data format conversion between the line side processing unit 12 of the line board 1 and the electrical cross side processing unit 53 of the electrical cross board 5, so that the data processed by the line side processing unit 12 can be identified by the electrical cross side processing unit 53 and the data processed by the electrical cross side processing unit 53 can be identified by the line side processing unit 12.

The function of the second connection unit 41 is similar to that of the first connection unit 15. For example, if the mapping function of the electrical bypass board 4 is integrated in the line side processing unit 12 of the line board 1 or in the electrical cross side processing unit 53 of the electrical cross board 5, the second connection unit 41 functions as a fitting connection with the electrical cross side processing unit 53. Whereas if the electrical bypass board 4 is provided with a mapping function, for example, the third processing module comprises an electrical bypass side processing unit for performing the mapping function, the second connection unit 41 is used for performing data format conversion between the electrical bypass side processing unit of the circuit board 1 and the electrical cross side processing unit 53 of the electrical cross board 5, so that the data processed by the electrical bypass side processing unit can be recognized by the electrical cross side processing unit 53 and the data processed by the electrical cross side processing unit 53 can be recognized by the electrical bypass side processing unit.

The specific functions of the line side processing unit 12, the specific functions of the first connection unit 15, the specific functions of the electrical crossover side processing unit 53, the specific functions of the electrical branching board 4, and the specific functions of the second connection unit 41 are not particularly limited, and can be flexibly configured.

As described above, the circuit board 1 includes two branches, which are the first path (1) and the second path (2), respectively, as shown in fig. 6. In order to select whether the traffic is transmitted in the first path (1) or in the second path (2), accordingly, as shown in fig. 7, the circuit board 1 may further include a selection switch unit 17, and the selection switch unit 17 is connected to the line-side processing unit 12 and the first connection unit 15, respectively, and is also connected to the optical module to which the line-side optical switch 14 is connected, as shown in fig. 7. Thus, when the selection switch unit 17 is selected to be on with the line-side processing unit 12 and is selected to be off with the first connection unit 15, that is, when the first path (1) is selected to be on and the second path (2) is off, traffic flow transmission between the line board 1 and the optical branching board 2 is enabled, and traffic transmission between the line board 1 and the electrical branching board 4 is disabled. For example, traffic entering from the circuit board 1 flows only to the optical branching board 2 and not to the electrical branching board 4, and for example, the optical branching board 2 can flow into traffic and the electrical branching board 4 cannot flow into traffic. When the selection switch unit 17 selects the connection between the line side processing unit 12 and the first connection unit 15, that is, when the first path (1) is selected to be off and the second path (2) is selected to be on, the transmission of traffic between the line board 1 and the electrical branching board 4 is enabled, and the transmission of traffic between the line board 1 and the optical branching board 2 is disabled. For example, traffic entering from the circuit board 1 can flow only to the electrical bypass board 4 and not to the optical bypass board 2, and for example, the electrical bypass board 4 can flow into traffic and the optical bypass board 2 cannot flow into traffic. Of course, the selection switch unit 17 may alternatively be connected to both the line-side processing unit 12 and the first connection unit 15, i.e. to both the first path (1) and the second path (2), so that traffic flows can be carried out between the line board 1 and the optical branching board 2, and between the line board 1 and the electrical branching board 4. For example, the traffic flowing in from the circuit board 1 may flow out from the optical branching board 2 or may flow out from the electrical branching board 4, or both the optical branching board 2 and the electrical branching board 4 may flow in the traffic.

Wherein the number of optical modules connected to the line-side optical switch 14 is one or more. For example, as shown in fig. 7, the number of optical modules connected to the line-side optical switch 14 is plural. As another example, as shown in fig. 8, the number of optical modules connected to the line-side optical switch 14 is one.

In an example, in a scheme in which the line board 1 includes the selection switch unit 17, the number of optical modules to which the line-side optical switch 14 is connected may be plural, and the plural optical modules may be shared. For example, referring to fig. 7, the optical module to which the line-side optical switch 14 is connected includes a second optical module 13 and a fifth optical module 16, and the second optical module 13 and the fifth optical module 16 may be shared. For example, the traffic flow transmitted on the first path (1) may travel through the second optical module 13 or through the fifth optical module 16, and the traffic flow transmitted on the second path (2) may travel through the second optical module 13 or through the fifth optical module 16. In the scheme that the optical modules connected with the line side optical switch 14 are multiple, the bandwidth of the optical modules can be smaller, the sum of the bandwidths of the optical modules is still larger, so that the service flow with large bandwidth can be still transmitted.

Since the optical modules connected to the line-side optical switch 14 can be shared, the traffic flow between the selector switch unit 17 and the line-side optical switch 14 can be entirely routed to one of the optical modules, and the optical module connected to the line-side optical switch 14 can be one. For example, one of the second optical module 13 and the fifth optical module 16 may be reserved, that is, only one optical module is connected between the selection switch unit 17 and the line-side optical switch 14, and as shown in fig. 8, only the second optical module 13 may be connected. In the scheme that the optical modules connected with the line side optical switch 14 are one, the bandwidth of the second optical module 13 needs to be relatively large, so that a service flow with a large bandwidth can be transmitted.

Of course, not only one or two but also a larger number of optical modules may be connected to the selection switch unit 17, and these optical modules connected to the selection switch unit 17 may be shared and together carry out transmission of the traffic.

The connection between the circuit board 1 and the electrical bypass board 4 is described above by means of the optical cross board 3 and the electrical cross board 5. Of course, the connection of the circuit board 1 and the electrical bypass board 4 can also be achieved solely by means of the electrical cross board 5, as described in detail below.

The connection to the electrical bypass board 4 is achieved only by means of the electrical cross board 5 for the circuit board 1. As shown in fig. 9, each of the wiring boards 1 is directly connected to each of the plurality of electric cross boards 5, and each of the electric cross boards 5 is directly connected to each of the plurality of electric branch boards 4. For example, the circuit board 1 and the electric branching board 4 are connected to the same electric cross board 5, and the circuit board 1 and the electric branching board 4 can be connected. Specifically, each circuit board 1 is connected to each of the plurality of electric cross boards 5, and each electric cross board 5 is connected to each of the plurality of electric branch boards 4, so that each circuit board 1 is connected to all electric branch boards 4, each electric branch board 4 is connected to all circuit boards 1, and any two electric branch boards 4 are connected.

In the scheme shown in fig. 9, the modules specifically included in the wiring board 1, the optical branching board 2, the optical cross board 3, the electrical branching board 4, and the electrical cross board 5 may be as follows.

With the wiring board 1, since the first connection unit 15 of the wiring board 1 and the electrical cross-side processing unit 53 of the electrical cross board 5 are directly connected and electrically connected, and the electrical cross-side processing unit 12 receives and transmits an electrical signal, no photoelectric conversion is required, so that the fifth optical module 16 is not required to be included, and then the first path (1) of the wiring board 1 is unchanged, and the second path (2) of the wiring board 1 becomes the first optical module 11, the line-side processing unit 12, and the first connection unit 15, which are sequentially connected, and the first connection unit 15 is responsible for being directly electrically connected with the electrical cross-side processing unit 53 of the electrical cross board 5.

Since the first connection unit 15 is directly connected to the electric cross board 5 in the form of an electrical signal, that is, the first connection unit 5 is not connected to the electric cross board 5 through an optical signal, the optical channel and the electric channel are independent from each other, and thus the selection of a path using the selection switch unit 17 is not required.

The modules included in the optical cross plate 3, the optical branching plate 2 and the electrical branching plate 4 are unchanged.

For the electrical cross board 5, since it no longer interfaces with the optical cross board 3, the electrical cross board 5 need not include an optical switch and an optical module, and as shown in fig. 9, the electrical cross board 5 need only include the electrical cross side processing unit 53.

The above describes, respectively, the respective modules included in the circuit board 1, the optical branching board 2, the optical cross board 3, the electrical branching board 4 and the electrical cross board 5 in the scheme in which the optical branching board 3 and the electrical branching board 5 are in communication with each other and in the scheme in which the optical branching board 3 and the electrical branching board 5 are not in communication with each other. The solution of the intercommunication of the optical branching plate 3 and the electrical branching plate 5, i.e. the connection of the circuit board 1 and the electrical branching plate 4, is realized by means of the optical branching plate 3 and the electrical branching plate 5. The solution in which the optical branching plate 3 and the electrical branching plate 5 do not communicate, i.e. the connection of the circuit board 1 and the electrical branching plate 4 is realized solely by means of the electrical branching plate 5 and not by means of the optical branching plate 3.

It should be noted that, the above-described optical modules, such as the first optical module 11, the second optical module 13, the third optical module 22, the fourth optical module 24, the fifth optical module 16, the sixth optical module 52, and the seventh optical module 42, may be pluggable optical modules, which can be plugged into a board, can be pulled out from a board, can be fixed to a board, cannot be pulled out from a board, and can be functional units integrated on a board, such as a chip integrated on a board. The specific form of each optical module is not limited in this embodiment, and may be flexibly selected according to actual situations.

In application, in order to enhance the strength of the service signal, as shown in fig. 10, the circuit board 1 may include a line-side amplifier 18, where the line-side amplifier 18 is an optical amplifier, and may be connected between the second optical module 13 and the line-side optical switch 14, where the number of line-side amplifiers 18 is the same as the number of optical modules connected to the selection switch unit 17, for example, the selection switch unit 17 connects two optical modules, that is, the second optical module 13 and the fifth optical module 16, and then the number of line-side amplifiers 18 is two, and the protocols, such as transmission rates, of the second optical module 13 and the fifth optical module 16 are the same.

Also, as shown in fig. 10, the optical branching plate 2 may include an optical amplifier, denoted as an optical branching side amplifier 25, and the optical branching side amplifier 25 and the optical branching side light switch 21 are connected. As shown in fig. 10, the electric cross board 5 may also include an optical amplifier, denoted as an electric cross-side amplifier 54, connected between the electric cross-side optical switch 51 and the sixth optical module 52.

It should be noted that the various optical amplifiers described above are applicable to the scheme in which the optical branching plate 3 and the electrical branching plate 5 are in communication, and also to the scheme in which the optical branching plate 3 and the electrical branching plate 5 are not in communication, and fig. 10 is an illustration of the former case.

It should be noted that the optical communication apparatus includes not only the above-described various modules but also components for promoting the normal operation of the optical communication apparatus, such as a power supply, a control, a clock, and a fan, which are not described in the present application, because they are irrelevant to the inventive point of the present application.

In the application of the optical communication device, in order to avoid the situation that communication is interrupted due to the failure of a certain optical cross board 3, the optical cross board 3 may be redundantly protected. For example, at least one spare light-intersecting plate 3 may be included in the plurality of light-intersecting plates 3. For example, 1+1, 1: n, or, m: n, etc. Wherein 1+1 is a main optical cross board of one optical cross board 3, which is responsible for normal operation, and the other optical cross board 3 is a standby optical cross board, which is responsible for starting operation when the main optical cross board fails. 1: n is the light cross board with n light cross boards 3 as main, which is responsible for normal operation, and one light cross board 3 is the standby light cross board. m: n is the light cross board with n light cross boards 3 as main, and is responsible for normal operation, and m light cross boards 3 are standby light cross boards.

Also, in order to avoid a situation where communication is interrupted due to a failure of a certain electric cross board 5, the electric cross board 5 may be redundantly protected. For example, the plurality of electric cross boards 5 may include at least one standby electric cross board 5, and the standby electric cross board 5 is started to operate when the main electric cross board fails. For example, 1+1, 1: n, or, m: n, etc.

It should be noted that the redundancy protection of the optical crossbar board 3 and the electrical crossbar board 5 is applicable to a scheme in which the optical crossbar board 3 and the electrical crossbar board 5 are in communication, and is also applicable to a scheme in which the optical crossbar board 3 and the electrical crossbar board 5 are not in communication.

As described above, the optical communication device may include a scheme not including the electrical branching board 4 and the electrical crossing board 5, a scheme in which the optical crossing board 3 and the electrical crossing board 5 communicate with each other, and a scheme in which the optical crossing board 3 and the electrical crossing board 5 do not communicate with each other. Application scenarios of these three schemes will be described below.

In fig. 11 to 13, the numbers of the optical cross plate 3, the electrical cross plate 5, the first optical branching plate 2A, the second optical branching plate 2B, and the electrical branching plate 4 are each schematically one for convenience of drawing the transmission path. In fig. 11 to 13, each transmission path is a double-headed arrow, and the transmission path uses the double-headed arrow because the transmission direction of the traffic flow may be from another optical communication apparatus to the client apparatus or from the client apparatus to another optical communication apparatus, that is, fig. 11 to 13 are applicable to the uplink transmission and the downlink transmission of the traffic flow.

For a solution that does not include the electrical bypass boards 4 and the electrical cross boards 5, the scenario may be as follows. As shown in fig. 11, the transmission of the traffic between the other optical communication device and the client device may include two transmission paths, a transmission path a and b, respectively. The transmission path a is a circuit board 1, an optical cross board 3 and a first optical branching board 2A. The transmission path B is the wiring board 1-the optical cross board 3-the second optical branching board 2B. If the encapsulation protocol of the second optical module 13 of the circuit board 1 is the same as the encapsulation protocol of the optical module connected to the client device, the traffic is transmitted according to the transmission path a, and otherwise, the traffic is transmitted according to the transmission path b. The transmission of traffic flows between different circuit boards 1 follows a transmission path c, which is a circuit board 1-optical cross board 3-circuit board 1. In this scheme, since the traffic flows, whether large-grain traffic or small-grain traffic, are optical cross-scheduling and the rate of optical transmission is high, the delay is low, where the large-grain traffic is, for example, traffic flow with large data volume, and the small-grain traffic is, for example, traffic flow with small data volume.

And (II) for the scheme of the intercommunication of the optical cross board 3 and the electric cross board 5, the application scenario can be as follows. As shown in fig. 12, the transmission of the traffic between another optical communication device and the client device may include three transmission paths, namely, a transmission path a, b and d. The transmission path a is a circuit board 1, an optical cross board 3 and a first optical branching board 2A. The transmission path B is the wiring board 1-the optical cross board 3-the second optical branching board 2B. The transmission path d is a circuit board 1, an optical cross board 3, an electric cross board 5 and an electric branch board 4. The transmission path a and the transmission path b can be suitable for large-particle service or service requiring low delay, and the transmission path a and the transmission path b are adopted, so that the speed is high and the delay is low. The transmission path d can be used for transmitting small-particle service, or the small-particle service is converged by the electric cross board 5 and then transmitted to the circuit board 1 together, so that transmission energy can be saved.

With continued reference to fig. 12, the traffic flow may be transmitted between different circuit boards 1 according to transmission path c and transmission path e. The transmission path c is a circuit board 1-an optical cross board 3-a circuit board 1, and can be suitable for a punching scene of large-particle service or data with low delay requirement. The transmission path e is a circuit board 1-optical cross board 3-electric cross board 5-optical cross board 3-circuit board 1, and can be suitable for a punching scene of small particle business.

And (III) for the scheme of non-intercommunication of the optical cross board 3 and the electric cross board 5, the application scenario can be as follows. As shown in fig. 13, the transmission of the traffic between another optical communication device and the client device may include three transmission paths, namely transmission paths a, b and f. The transmission path a is a circuit board 1, an optical cross board 3 and a first optical branching board 2A. The transmission path B is the wiring board 1-the optical cross board 3-the second optical branching board 2B. The transmission path f is a circuit board 1-an electric cross board 5-an electric branch board 4. The transmission path a and the transmission path b can be suitable for large-particle service or service requiring low delay, and the transmission path a and the transmission path b are adopted, so that the speed is high and the delay is low. The transmission path f can be used for transmitting small-particle service, or the small-particle service is converged by the electric cross board 5 and then transmitted to the circuit board 1 together, so that transmission energy can be saved.

With continued reference to fig. 13, the traffic flow may be transmitted between different circuit boards 1 according to a transmission path c and a transmission path g. The transmission path c is a circuit board 1-an optical cross board 3-a circuit board 1, and can be suitable for a punching scene of large-particle service or data with low delay requirement. The transmission path g is a circuit board 1-an electric cross board 5-a circuit board 1, and can be suitable for a punching scene of small particle business.

It should be noted that, the above transmission paths can be used for transmitting large-particle service and small-particle service, and in application, the transmission paths can be flexibly selected according to actual requirements, for example, large-particle service, service with low delay requirement, routing cross-dispatching without routing cross-dispatching, small-particle service, service with low delay requirement, routing cross-dispatching without routing cross-dispatching, so that the service is balanced through the optical communication device, and the utilization rate of the optical communication device is improved.

The optical communication device comprising the optical cross board 3 and the electrical cross board 5 has at least the following advantages:

first, the service flow transmission can be performed between any one circuit board 1 and any one optical branching board 2, and between any one circuit board 1 and any one electrical branching board 4, so that the flexibility of service scheduling is improved. Second, the optical cross board is irrelevant to the link rate, so that the link transmission rate is easier to be improved compared with the electrical connection, and the optical communication equipment has good expansibility. Thirdly, in the scheme of interconnecting the optical cross boards 3 and the electrical cross boards 5, since the service transmission can be performed between all the circuit boards 1 and the electrical cross boards 5, and the service transmission can also be performed between all the optical cross boards 3 and the electrical cross boards 5, the electrical cross boards 5 can be resources which can be shared and shared by all the circuit boards 1 and all the optical cross boards 3. In this way, the optical cross board 3 can share the cross-dispatching traffic of the electrical cross board 5, and reduce the processing for the electrical cross board 5, so that the chip capacity and power consumption of the electrical cross board 5 can be reduced. Fourth, the optical communication apparatus including the selection switch unit 17 can flexibly allocate the traffic flow optical branching board 2 or the electrical branching board 4, and the ratio of the optical branching board 2 and the electrical branching board 4, and can reduce the number of the second optical modules 13 and the number of the line-side amplifiers 18, thereby saving costs.

In the embodiment of the application, each of the plurality of circuit boards is connected with all the optical tributary boards, so that service flows can be transmitted between any circuit board and any optical tributary board, and the use flexibility of the optical communication equipment is enhanced. Moreover, since the rate of traffic signal scheduling by the optical cross board is higher than the rate of traffic signal scheduling by the electrical cross board, the delay of traffic signals by the optical cross board is low.

The present embodiments also provide an optical communication system, as shown in fig. 14, where the optical communication device includes a first client device 100, a second client device 200, and at least one optical communication device 300 of the foregoing embodiments. Wherein the first client device 100 and the second client device 200, one as a transmitting client device and the other as a receiving client device, establish a communication connection through at least one optical communication device 300. For example, the first client device 100 is connected to a tributary board of one of the at least one optical communication device, and the second client device 200 is connected to a tributary board of one of the at least one optical communication device.

Wherein the tributary board comprises at least the optical tributary board 2 described above, for example, the tributary board may be the optical tributary board 2 if the optical communication device 300 is an optical communication device comprising the optical tributary board 2 as shown in fig. 2, but not comprising the electrical tributary board 4. Whereas if the optical communication device 300 is an optical communication device comprising an optical branching plate 2 and an electrical branching plate 4 as shown in fig. 6, the branching plate may be the optical branching plate 2 or the electrical branching plate 4. In fig. 14 to 16, the optical branching plate 2 is exemplified as a branching plate, but the branching plate is not limited to the optical branching plate 2, and may be the electrical branching plate 4.

In one example, the first client device 100 and the second client device 100 may establish a communication connection through the same optical communication device 300. As shown in fig. 14, the first client device 100 and the second client device 200 are connected to different tributary boards of the same optical communication device 300, respectively. This approach may be suitable for a scenario where two client devices are relatively close together, such as where the first client device 100 and the second client device 200 are located in a building or in the same cell.

In another example, the first client device 100 and the second client device 100 may also establish a communication connection through a plurality of optical communication devices 300. For example, as shown in fig. 15, the first client device 100 is connected to a tributary board of a first optical communication device 301 of the at least one optical communication device 300, and the second client device 200 is connected to a tributary board of a second optical communication device 302 of the at least one optical communication device 300. Wherein the first optical communication device 301 and the second optical communication device 302 are different optical communication devices, and the circuit board 1 of the first optical communication device 301 and the circuit board 1 of the second optical communication device 302 are connected. The approach may be applicable to scenarios where the first client device 100 and the second client device 200 are remote, such as where the first client device 100 and the second client device 200 are located in different cities.

Wherein the connection between the circuit board 1 of the first optical communication device 301 and the circuit board 1 of the second optical communication device 302 includes both direct connection and indirect connection, as described below.

The first client device 100 and the second client device 200 may establish a communication connection through two or more optical communication devices 300. As shown in fig. 15, one wiring board 1 of the first optical communication apparatus 301 and one wiring board 1 of the second optical communication apparatus 302 are directly connected. As further shown in fig. 16, the first optical communication device 301 and the second optical communication device 302 are connected by at least one optical communication device 300, and the first optical communication device 301, the second optical communication device 302 and the at least one optical communication device 300 are connected by the circuit board 1, respectively, and the two connected optical communication devices 300 are connected by the circuit board 1. As shown in fig. 16, one wiring board 1 of the first optical communication device 301 is connected to one wiring board 1 of the third optical communication device 303 of the at least one optical communication device, and the other wiring board 1 of the third optical communication device 303 is connected to one wiring board 1 of the second optical communication device 302. In which fig. 16 is only an example, i.e., connected by one optical communication apparatus 300 (i.e., a third optical communication apparatus 303). In practical applications, the first optical communication device 301 and the second optical communication device 302 may also be connected by a greater number of optical communication devices 300.

In the embodiment of the application, as described above, each of the plurality of circuit boards is connected to each of the plurality of optical tributary boards, so that a service flow can be transmitted between any circuit board and any optical tributary board, thereby enhancing the flexibility of use of the optical communication device. Moreover, since the rate of traffic signal scheduling by the optical cross board is higher than the rate of traffic signal scheduling by the electrical cross board, the delay of traffic signals by the optical cross board is low.

The foregoing description is provided for the purpose of illustrating an exemplary embodiment of the present application and is not intended to limit the scope of the present application, but is intended to cover any adaptations, alternatives, modifications, and variations that may include within the scope of the present application.

Claims

1. An optical communication apparatus, characterized in that the optical communication apparatus comprises a plurality of circuit boards (1), a plurality of optical branching boards (2) and a plurality of optical cross boards (3);

each of the plurality of circuit boards (1) is connected with each of the plurality of optical branching boards (2) through the plurality of optical cross boards (3), and any two circuit boards (1) are connected through the plurality of optical cross boards (3);

The circuit board (1) is used for being connected with another optical communication device, and the optical branching board (2) is used for being connected with a client device.

2. The optical communication apparatus according to claim 1, wherein the wiring board (1) includes a first optical module (11), a line-side processing unit (12), a second optical module (13), and a line-side optical switch (14) connected in this order;

the optical branching board (2) comprises an optical branching side light switch (21), and the optical cross board (3) comprises an optical cross side light switch (31);

the first optical module (11) is used for being connected with another optical communication device, the line side optical switch (14) is connected with the optical cross side optical switch (31), and the optical cross side optical switch (31) is connected with the optical branch side optical switch (21).

3. The optical communication device according to claim 2, characterized in that the plurality of optical branching plates (2) comprises a first optical branching plate (2A) and a second optical branching plate (2B);

the second optical branching board (2B) further comprises a third optical module (22), a conversion unit (23) and a fourth optical module (24), the optical branching side optical switch (21), the third optical module (22), the conversion unit (23) and the fourth optical module (24) of the second optical branching board (2B) are sequentially connected, wherein the protocols of the second optical module (13) and the third optical module (22) are the same, and the protocols of the fourth optical module (24) and the optical module connected with the client device are the same.

4. An optical communication apparatus according to any one of claims 1 to 3, wherein each of the plurality of wiring boards (1) is connected to each of the plurality of optical cross boards (3), and each of the plurality of optical cross boards (3) is connected to each of the plurality of optical branching boards (2).

5. An optical communication device according to any one of claims 1 to 4, characterized in that any two optical branching plates (2) are connected by means of said plurality of optical cross plates (3).

6. The optical communication device according to any one of claims 1 to 5, further comprising a plurality of electrical branching plates (4) and a plurality of electrical crossing plates (5);

each of the plurality of circuit boards (1) is connected to each of the plurality of electrical branching boards (4) through the plurality of electrical cross boards (5), the electrical branching boards (4) being for connection to the client device.

7. The optical communication device according to claim 6, wherein each of the plurality of wiring boards (1) is connected to each of the plurality of electrical branching boards (4) through the plurality of electrical cross boards (5) and the plurality of optical cross boards (3).

8. The optical communication device according to claim 7, wherein each of the plurality of wiring boards (1) is connected to each of the plurality of optical cross boards (3), each of the plurality of optical cross boards (3) is connected to each of the plurality of electrical cross boards (5), and each of the plurality of electrical cross boards (5) is connected to each of the plurality of electrical branch boards (4).

9. The optical communication apparatus according to claim 8, wherein the wiring board (1) includes a first optical module (11), a line-side processing unit (12), a first connection unit (15), a fifth optical module (16), and a line-side optical switch (14) connected in this order;

the optical cross board (3) comprises an optical cross side light switch (31), the electric cross board (5) comprises an electric cross side light switch (51), a sixth optical module (52) and an electric cross side processing unit (53) which are connected in sequence, and the electric branch board (4) comprises a second connecting unit (41) and a seventh optical module (42) which are connected;

the first optical module (11) is used for being connected with another optical communication device, the line side optical switch (14) is connected with the optical cross side optical switch (31), the optical cross side optical switch (31) is connected with the electric cross side optical switch (51), the electric cross side processing unit (53) is connected with the second connecting unit (41), and the seventh optical module (42) is used for being connected with the client device.

10. The optical communication device according to claim 9, characterized in that the wiring board (1) further comprises a selection switch unit (17), the selection switch unit (17) being connected to the line-side processing unit (12) and the first connection unit (15), respectively, and also to an optical module to which the line-side optical switch (14) is connected;

The selection switch unit (17) is used for selecting a path connection with the line side processing unit (12) and/or a path connection with the first connection unit (15).

11. The optical communication device according to claim 6, wherein each of the plurality of wiring boards (1) is directly connected to each of the plurality of electrical cross boards (5), each of the plurality of electrical cross boards (5) being directly connected to each of the plurality of electrical branch boards (4).

12. Optical communication device according to any of claims 6 to 11, characterized in that at least one spare electrical cross board is included in the plurality of electrical cross boards (5), said spare electrical cross board being adapted to initiate operation when the main electrical cross board fails.

13. An optical communication device according to any of claims 1 to 12, characterized in that the plurality of optical cross boards (3) comprises at least one spare optical cross board for initiating operation when the main optical cross board fails.

14. An optical communication system, characterized in that the optical communication system comprises a first client device (100), a second client device (200) and at least one optical communication device (300) according to any of claims 1 to 13;

-a tributary board connection of said first client device (100) and one of said at least one optical communication device (300), -a tributary board connection of said second client device (200) and one of said at least one optical communication device (300), said tributary board comprising at least an optical tributary board (2).

15. The optical communication system according to claim 14, wherein the first client device (100) and the second client device (200) are connected to different tributary boards of the same optical communication device (300), respectively.

16. The optical communication system according to claim 14, wherein the first client device (100) is connected to a tributary board of a first optical communication device (301) of the at least one optical communication device (300), the second client device (200) is connected to a tributary board of a second optical communication device (302) of the at least one optical communication device (300), the first optical communication device (301) and the second optical communication device (302) are different optical communication devices, and the board (1) of the first optical communication device (301) and the board (1) of the second optical communication device (302) are connected.