Optical branch board and transmission network

Abstract

Provided are an optical branch board and a transmission network, relating to the field of optical communications, the optical branch board having the ability to schedule optical signals to more optical line directions, thereby improving the pooling sharing degree of transmission resources of a transport capacity pool. The optical branch board is applied to a transmission network, and the transmission network comprises a plurality of client side devices on a client side and a plurality of line side devices on a line side. In the structure, the optical branch board comprises N line side ports, M equipment side ports and M wavelength selection switches, wherein the wavelength selection switch comprises one public port and N branch ports, the public port of the wavelength selection switch is used for connecting the equipment side port, and the N branch ports of the wavelength selection switch are used for connecting the N line side ports respectively; the equipment side port is used for connecting client side equipment, and the line side port is used for connecting line side equipment. The embodiment of the invention is applied to optical communication.

Description

Technical Field

[0001] The present application relates to the field of optical communications, and in particular to an optical branch board and a transmission network. Background Art

[0002] The wavelength-independent, direction-independent, capacity-independent and grid-independent (colorless directionless contentionless gridless, CDCG) networking architecture can realize multiple optical signals of the same wavelength up and down (i.e., transmission in the upstream and downstream directions) in the same local dimension (for example, it can be the same local device). At the same time, the ports of the up and down optical signals also have wavelength-independent and direction-independent functions, and the channel spacing can be dynamically adjusted. It has grid-independent functions and is the latest generation of optical layer networking architecture. It is very beneficial to plan, deploy, open and maintain the network based on this networking architecture. Among them, when the computing power network is deployed through this networking architecture, it will face the tidal demand characteristics between computing power and storage power.

[0003] For example, between a computing center and different data call units (data that requires the computing center), there are scenarios involving large data transfers and burst data transmission tasks. Specifically, at different times, transmission resources (such as transmission bandwidth and wavelength) need to be connected to different data call units to complete these burst data transfer tasks. After completion, the transmission resources can be released, preventing other transmission resources such as transmission bandwidth from being occupied for a long time. Similar burst data transfer tasks also occur in computing scenarios such as East-West Data Storage and East-West Data Computing. However, large data transfer and burst data transfer tasks are not continuous. If fixed transmission resources (such as large transmission bandwidth) are established for each transmission link, transmission resources will be wasted. This problem is often addressed through a capacity pool solution, which dynamically shares a portion of the transmission resources to reduce transmission resource waste. Specifically, when a large data transfer is required in a certain transmission direction, the shared transmission resources are temporarily and quickly allocated to the required link. After a transmission task is completed, the shared transmission resources are released and reallocated to other transmission links based on task-based transmission needs, completing tidal large data transfer.

[0004] Among them, the deployment of the capacity pool relies on two key technologies. First, it is necessary to deploy a line board with adjustable wavelength function (also called (line, N) board, N board). In addition, it is also necessary to deploy a functional unit with CDCG function, such as an optical branch board with CDCG function. However, in actual application scenarios, due to certain defects in the optical branch board with CDCG function, the N board in the capacity pool cannot be fully utilized, so there are still some transmission resources that cannot be dynamically shared, that is, the capacity pool cannot achieve complete (100%) pooled sharing of transmission resources. Summary of the Invention

[0005] The present application provides an optical tributary board and a transmission network, wherein the optical tributary board has the ability to dispatch optical signals to more optical line directions, thereby improving the pooled sharing degree of transmission resources in a capacity pool.

[0006] In a first aspect, an optical branch board is provided. The optical branch board is applied to a transmission network, the transmission network including multiple client-side devices and multiple line-side devices. Structurally, the optical branch board includes: N line-side ports, M device-side ports, and M wavelength selective switches. The wavelength selective switches include: one common port and N branch ports. The common port of the wavelength selective switch is used to connect to the device-side port, and the branch port of the wavelength selective switch is used to connect to the line-side port. The device-side port is used to connect to the client-side device, and the line-side port is used to connect to the line-side device.

[0007] Functionally, the optical branch board is used to receive a first optical signal sent by a first client-side device through a first device-side port and transmit the first optical signal to the common port of a first wavelength selective switch; the first device-side port is one of M device-side ports, the first client-side device is one of multiple client-side devices, and the first wavelength selective switch is one of the M wavelength selective switches; the first wavelength selective switch distributes the first optical signal to the first branch port of the first wavelength selective switch according to the wavelength of the received first optical signal, and outputs it to the first line-side port, which is one of the N line-side ports; the first line-side port outputs the first optical signal to the first line-side device, which is one of the multiple line-side devices; and the optical branch board is used to receive a second optical signal sent by the second line-side device through a second line-side port and transmit the second optical signal to the first branch port of the second wavelength selective switch; the second wavelength selective switch outputs the second optical signal to the second device-side port through the common port, and outputs it to the second client-side device through the second device-side port.

[0008] Structurally, the aforementioned optical branch board includes N line-side ports for connecting to line-side devices, M device-side ports for connecting to client-side devices, and multiple wavelength selective switches. Each wavelength selective switch includes one common port and N branch ports. Specifically, the common port of the wavelength selective switch is used to connect to the device-side port, while the branch ports of the wavelength selective switch are used to connect to the line-side ports. Thus, through the device-side ports of the optical branch board, the common ports of multiple wavelength selective switches can be connected to multiple client-side devices; and through the line-side ports of the optical branch board, the branch ports of the wavelength selective switches can be connected to multiple line-side devices.

[0009] Functionally, in the first direction, the optical branch board can receive an optical signal (e.g., a first optical signal) transmitted by any client-side device (e.g., the first client-side device) through any device-side port (e.g., the first device-side port) and transmit the received optical signal to the common port of any wavelength selective switch (e.g., the first wavelength selective switch). Furthermore, the first wavelength selective switch distributes the received first optical signal to any branch port (e.g., the first branch port) of the first wavelength selective switch based on the wavelength of the received first optical signal, and outputs the signal to any line-side port (e.g., the first line-side port). The first line-side port then outputs the signal to any line-side device (e.g., the first line-side device). In the second direction, the optical branch board can receive an optical signal (e.g., a second optical signal) transmitted by any line-side device (e.g., the second line-side device) through any line-side port (e.g., the second line-side port) and transmit the received optical signal to any branch port (e.g., the first branch port) of any wavelength selective switch (e.g., the second wavelength selective switch). Furthermore, the second wavelength selective switch outputs the second optical signal to any device-side port (e.g., the second device-side port) through the common port, and outputs the second optical signal to any client-side device (e.g., the second client-side device) through the second device-side port. It should be noted that the above-mentioned first direction and the second direction are two opposite and different directions. In this application, the first direction is described as the upstream direction and the second direction is described as the downstream direction, and this should not constitute a limitation on the optical branch board provided in this application. In addition, the above-mentioned first wavelength selective switch and the second wavelength selective switch can be the same wavelength selective switch or different wavelength selective switches, and this application does not limit this. In this way, the device-side port of the optical branch board can receive the optical signal sent by the client-side device and transmit it to the wavelength selective switch, and the wavelength selective switch distributes the optical signal to any branch port, and then the line-side port outputs the optical signal to the line-side device; and the line-side port of the optical branch board can receive the optical signal sent by the line-side device and transmit it to any branch port of the wavelength selective switch, and then the wavelength selective switch outputs the optical signal to the device-side port, and then the device-side port outputs the optical signal to the client-side device.

[0010] The line-side ports of the aforementioned optical tributary board can be connected to line-side equipment in the transmission network, and the equipment-side ports can be connected to client-side equipment. Specifically, through the wavelength selective switch, optical signals received from client-side equipment can be split according to the wavelength of the optical signal to any line-side port for output to the line-side equipment, and optical signals received from line-side equipment can be multiplexed according to the wavelength of the optical signal to any equipment-side port for transmission to the client-side equipment. In this way, the optical tributary board has the ability to dispatch optical signals to more optical line directions, thereby improving the pooled sharing of transmission resources in the capacity pool.

[0011] In one possible implementation, the optical branch board is further configured to receive a third optical signal sent by the first client-side device through the first device-side port, and transmit the third optical signal to the common port of the first wavelength selective switch; the first wavelength selective switch distributes the third optical signal to the second branch port of the first wavelength selective switch based on the wavelength of the received third optical signal, and outputs the third optical signal to a third line-side port, where the third line-side port is one of the N line-side ports, and the wavelength of the third optical signal is different from that of the first optical signal; and the third line-side port outputs the third optical signal to a third line-side device, where the third line-side device is one of the multiple line-side devices.

[0012] Then, the optical branch board in the above solution can receive two optical signals (i.e., the first optical signal and the third optical signal) sent by any client-side device (i.e., the first client-side device) through any device-side port (i.e., the first device-side port), and transmit the received two optical signals to the common port of any wavelength selective switch (i.e., the first wavelength selective switch). The two optical signals (i.e., the first optical signal and the third optical signal) have different wavelengths. Specifically, the first wavelength selective switch distributes the first optical signal to a branch port (i.e., the first branch port) of the first wavelength selective switch based on the wavelength of the first optical signal, and then transmits it to any line-side port (i.e., the first line-side port); the first wavelength selective switch distributes the third optical signal to another branch port (i.e., the second branch port) of the first wavelength selective switch based on the wavelength of the third optical signal, and then transmits it to another line-side port (i.e., the third line-side port). Furthermore, the first line-side port outputs the first optical signal to any line-side device (i.e., the first line-side device), and the third line-side port outputs the third optical signal to another line-side device (i.e., the third line-side device). In this way, in the upstream direction, the optical tributary board can receive two optical signals with different wavelengths from the same client-side device through the same device-side port. The wavelength selective switch demultiplexes the two received optical signals to different line-side ports for output to the line-side device. Therefore, the wavelength selective switch in the optical tributary board can demultiplex the optical signals received at the device-side port according to their wavelengths in the upstream direction.

[0013] In one possible implementation, the optical branch board is further configured to receive a fourth optical signal sent by a third client-side device through a third device-side port, and transmit the fourth optical signal to a common port of a third wavelength selective switch; the third wavelength selective switch distributes the fourth optical signal to a first branch port of the third wavelength selective switch based on a wavelength of the received fourth optical signal, and outputs the fourth optical signal to a fourth line-side port, where the fourth line-side port is one of N line-side ports, and the wavelength of the fourth optical signal is the same as that of the first optical signal; and the fourth line-side port outputs the fourth optical signal to a fourth line-side device, where the fourth line-side device is one of the plurality of line-side devices.

[0014] Then, the different device-side ports (i.e., the first device-side port and the third device-side port) of the optical branch board in the above scheme can receive two optical signals (i.e., the first optical signal and the fourth optical signal) sent by different client-side devices (i.e., the first client-side device and the third client-side device), and transmit the received two optical signals to the common ports of different wavelength selection switches (i.e., the first wavelength selection switch and the third wavelength selection switch). The wavelengths of the two optical signals (i.e., the first optical signal and the fourth optical signal) are the same. Specifically, the first wavelength selection switch distributes the first optical signal to a branch port (i.e., the first branch port) of the first wavelength selection switch according to the wavelength of the first optical signal, and then transmits it to any line-side port (i.e., the first line-side port); the third wavelength selection switch distributes the fourth optical signal to a branch port (i.e., the first branch port) of the third wavelength selection switch according to the wavelength of the fourth optical signal, and then transmits it to any line-side port (i.e., the fourth line-side port). Furthermore, the first line-side port outputs the first optical signal to any line-side device (i.e., the first line-side device), and the fourth line-side port outputs the fourth optical signal to another line-side device (i.e., the fourth line-side device). Thus, in the upstream direction, the optical tributary board can receive two optical signals of the same wavelength sent by different client-side devices through different device-side ports, transmit the two received optical signals to different line-side ports through different wavelength selective switches, and then output them to different line-side devices. Thus, the above solution, through the different wavelength selective switches in the optical tributary board, can transmit optical signals of the same wavelength received by different device-side ports to different line-side devices in the upstream direction, thereby achieving transmission of optical signals of the same wavelength.

[0015] In one possible implementation, the optical branch board is further configured to receive a fifth optical signal sent by a fifth line-side device through a fifth line-side port; transmit the fifth optical signal to a second branch port of a second wavelength selective switch; and the second wavelength selective switch outputs the fifth optical signal to a second device-side port through a common port, and outputs the fifth optical signal to a second client-side device through the second device-side port.

[0016] The optical branch board in the above solution can receive two optical signals (i.e., the second optical signal and the fifth optical signal) transmitted from different line-side devices (i.e., the second line-side port and the fifth line-side port) through different line-side ports (i.e., the second line-side port and the fifth line-side port), and transmit the two received optical signals to different branch ports (i.e., the first branch port and the second branch port) of any wavelength selective switch (i.e., the second wavelength selective switch). Specifically, the second optical signal and the fifth optical signal can be transmitted together to the same device-side port (i.e., the second device-side port) through the common port of the second wavelength selective switch. Furthermore, the two optical signals are output together by the second device-side port to any client-side device (i.e., the second client-side device). In this way, in the downstream direction, the optical branch board can receive two optical signals transmitted from different line-side devices through different line-side ports, combine the two received optical signals to the same device-side port through the wavelength selective switch, and then output them to the same client-side device. Therefore, the above solution, through the wavelength selective switch in the optical branch board, can combine the optical signals received from different line-side ports in the downstream direction and transmit them to the same line-side device.

[0017] In one possible implementation, the device-side port of the optical branch board is also used to connect to the client-side device through a splitter; wherein the splitter includes a common port and K branch ports; the common port of the splitter is used to connect to the first device-side port of the optical branch board, and the branch port of the splitter is used to connect to the client-side device.

[0018] Then, structurally, the device-side port of the optical branch board in the above solution can be connected to the public port of the optical splitter, and then connected to multiple client-side devices through the multiple branch ports of the optical splitter. For example, functionally, the optical branch board can receive an optical signal (e.g., a first optical signal) sent by a client-side device (e.g., a first client-side device) through the branch port (e.g., a first branch port) of the optical splitter, and can output an optical signal (e.g., a second optical signal) received from the device-side port (e.g., the first device-side port) to a client-side device (e.g., a second client-side device) through the public port of the optical splitter. In this way, any device-side port of the optical branch board can receive multiple optical signals sent from different client-side devices through the multiple branch ports of the connected optical splitter, and output the optical signal received from the device-side port to the client device through the public port of the optical splitter. Then, the above scheme can receive optical signals sent by multiple client-side devices through the multiple branch ports of the splitter, and then combine the received multiple optical signals and transmit them to any client-side port of the optical branch board. It can also split the optical signal transmitted by any client-side port of the optical branch board and transmit it to any client-side device.

[0019] In a possible implementation, the number N of line-side ports of the optical tributary board is greater than 16.

[0020] Then, in the above solution, the optical branch board includes at least 16 line-side ports. Specifically, the optical branch board can receive multiple optical signals (at least 16 channels) sent by multiple line-side devices through at least 16 line-side ports, and then can combine the multiple optical signals through a wavelength selective switch, and finally transmit them to one or more client-side devices; and can also demultiplex the optical signals received from the client-side devices through a wavelength selective switch, and finally transmit them to one or more line-side devices. In one possible implementation, the optical branch board can combine more than 16 optical signals received and output them to one or more client-side devices. For another example, the optical branch board can demultiplex the optical signals received from the client-side devices and output them to one or more line-side devices. In this way, through the optical branch board in the above solution, the optical signals can be demultiplexed and output to more line-side devices, that is, the optical signals can be dispatched to more optical line directions, which is conducive to improving the pooled sharing degree of transmission resources in the capacity pool.

[0021] In one possible implementation, the optical branch board further includes a microelectromechanical system (MEMS), one side of the MEMS is used to connect to the line-side port of the optical branch board, and the other side of the MEMS is used to connect to any branch port of the wavelength selective switch; the MEMS is specifically used to receive a first optical signal output by the first branch port of the first wavelength selective switch, and output the first optical signal to the first line-side port; and receive a second optical signal sent by the second line-side device, and transmit the second optical signal to the first branch port of the second wavelength selective switch.

[0022] Then, in the above solution, the optical branch board structurally further includes a micro-electromechanical system (MEMS), wherein the MEMS is connected to any line-side port (e.g., the first line-side port) of the optical branch board. Functionally, the MEMS can adjust the transmission direction of the optical signal. Specifically, the MEMS can receive an optical signal (e.g., a first optical signal) output from any branch port (e.g., the first branch port) of a wavelength selective switch (e.g., the first wavelength selective switch) and output the first optical signal to any line-side port (e.g., the first line-side port); and the MEMS can also receive an optical signal (e.g., a second optical signal) sent from any line-side device (e.g., the second line-side device) and transmit the second optical signal to any branch port (e.g., the first branch port) of any wavelength selective switch (e.g., the second wavelength selective switch). The first wavelength selective switch and the second wavelength selective switch can be the same wavelength selective switch or different wavelength selective switches. In this way, the above solution can output the optical signal received from the branch port of the wavelength selective switch to any line-side port through the micro-electromechanical system MEMS, and transmit the optical signal received from the line-side device to the branch port of the wavelength selective switch, ensuring that the optical signal can be transmitted between the line-side port of the optical branch board and the branch port of the wavelength selective switch in the corresponding line-side direction.

[0023] In a second aspect, a transmission network is provided, comprising: a plurality of client-side devices, a plurality of line-side devices, and a first optical branching board; wherein the first optical branching board comprises the optical branching board as described in any one of the first aspects.

[0024] In one possible implementation, the above-mentioned transmission network also includes: a splitter, which includes a common port and K branch ports; wherein the common port of the splitter is used to connect to any one of the M device-side ports of the optical branch board, and the K branch ports of the splitter are used to connect to multiple client-side devices.

[0025] In a possible implementation, at least two line-side ports of the first optical tributary board are connected to the same line-side device.

[0026] In the above solution, at least two line-side ports of the optical tributary board are connected to the same line-side device. Specifically, the optical tributary board can transmit optical signals received from client-side devices to the same line-side device through at least two line-side ports, and can also receive optical signals sent by the same line-side device through at least two line-side ports. Thus, by connecting multiple line-side ports to the same line-side device, the above solution enables the line-side device to simultaneously receive multiple optical signals from different line-side ports, and allows optical signals sent by the same line-side device to be transmitted to multiple different line-side ports, thereby improving the transmission efficiency of the transmission network.

[0027] In one possible implementation, the transmission network further includes: a second optical branch board; wherein the second optical branch board includes the optical branch board as described in any one of the first aspects; at least one line-side port of the first optical branch board and at least one line-side port of the second optical branch board are connected to the same line-side device.

[0028] In the above solution, at least one line-side port on each of the two optical branch boards (i.e., the first optical branch board and the second optical branch board) is connected to the same line-side device. Specifically, the first optical branch board and the second optical branch board can both transmit optical signals received from client-side devices to the same line-side device via at least one line-side port, and receive optical signals sent by the same line-side device via at least one line-side port. This allows the line-side device to simultaneously receive multiple optical signals from different optical branch boards, and transmit optical signals sent by the same line-side device to multiple line-side ports belonging to different optical branch boards.

[0029] A third aspect provides a transmission network. Structurally, the transmission network includes multiple client-side devices, multiple line-side devices, at least one optical switch, and an optical tributary board. The optical switch includes M common ports and N branch ports. The common ports of the optical switch are used to connect to the device-side ports of the optical tributary board, while the branch ports of the optical switch are used to connect to line-side devices. The line-side ports of the optical tributary board are used to connect to client-side devices. The optical tributary board includes N line-side ports, M device-side ports, and M wavelength selective switches. The wavelength selective switches include one common port and N branch ports. The common port of the wavelength selective switch is used to connect to the device-side port, while the branch ports of the wavelength selective switch are used to connect to the line-side port.

[0030] Functionally, the transmission network receives a first optical signal sent by a first client-side device through a first line-side port of an optical branch board, and transmits the first optical signal to a first branch port of a first wavelength selective switch; the first line-side port is one of N line-side ports, the first client-side device is one of a plurality of client-side devices, and the first wavelength selective switch is one of M wavelength selective switches; the first wavelength selective switch outputs the first optical signal to a first device-side port through a common port, the first device-side port outputs the first optical signal to a first common port of the optical switch, and the first branch port of the optical switch outputs the first optical signal to the first line-side device; the first device-side port is one of M device-side ports, and the first branch port of the optical switch outputs the first optical signal to the first line-side device. The first common port is one of the M common ports of the optical switch, and the first line-side device is one of the multiple line-side devices; and a second optical signal sent by the second line-side device is received through the second branch port of the optical switch, and the second optical signal is transmitted to the second device-side port of the optical branch board through the second common port of the optical switch; the optical branch board receives the second optical signal through the second device-side port and transmits the second optical signal to the common port of the second wavelength selective switch; the second wavelength selective switch distributes the second optical signal to the first branch port of the second wavelength selective switch according to the wavelength of the received second optical signal, and outputs the second optical signal to the second line-side port; and the second line-side port outputs the second optical signal to the second client-side device.

[0031] Structurally, the device-side port of the optical branch board in the aforementioned transmission network can be connected to client-side equipment, and the line-side port of the optical branch board can be connected to the common port of the optical switch, and then connected to the line-side equipment through the branch port of the optical switch. Specifically, functionally, the line-side port of the optical branch board in the aforementioned transmission network can receive optical signals sent by client-side equipment and transmit them to the wavelength selective switch, transmit the optical signals to the device-side port through the common port of the wavelength selective switch, and then output the optical signals to the line-side equipment through the branch port of the optical switch. Simultaneously, the transmission network can also receive optical signals sent by line-side equipment through the branch port of the optical switch, transmit the optical signals to the device-side port of the optical branch board through the common port of the optical switch, receive the optical signals at the device-side port of the optical branch board, and transmit the optical signals to the common port of the wavelength selective switch. The wavelength selective switch distributes the received optical signals to the branch ports of the wavelength selective switch based on the wavelength of the received optical signals, and then outputs them to the line-side port. The optical signals are then output to the client-side equipment through the line-side port.

[0032] Then, through the above solution, the transmission network can receive the optical signal transmitted by the common port of the wavelength selective switch in the optical tributary board connected to the device-side port (sent by the line-side device) through the common port of the optical switch, and demultiplex the optical signal according to the wavelength of the optical signal to any line-side port, and then output it to the client-side device. In addition, the optical signal received from the client-side device by the line-side port of the optical tributary board is combined to any device-side port, and then transmitted to the line-side device. In this way, the transmission network can dispatch optical signals to more optical line directions, which can effectively improve the pooled sharing of transmission resources in the capacity pool.

[0033] Among them, the technical effects brought about by the above-mentioned second aspect, third aspect and any implementation method thereof can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a communication network provided in an embodiment of the present application;

[0035] Figure 2 An application scenario diagram of a computing power network provided in an embodiment of the present application;

[0036] Figure 3 An architectural diagram of a communication network provided in an embodiment of the present application;

[0037] Figure 4 An architecture diagram of a communication network provided in accordance with another embodiment of the present application;

[0038] Figure 5 An architecture diagram of a communication network provided in accordance with another embodiment of the present application;

[0039] Figure 6 A schematic diagram of an optical branching board provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of a transmission network provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of a transmission network provided in accordance with another embodiment of the present application;

[0042] Figure 9 A schematic diagram of a transmission network provided in accordance with another embodiment of the present application;

[0043] Figure 10 A schematic diagram of a transmission network provided in accordance with yet another embodiment of the present application;

[0044] Figure 11 A schematic diagram of a transmission network provided in accordance with another embodiment of the present application. DETAILED DESCRIPTION

[0045] This application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. In addition, a combination of these schemes may also be used. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0046] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0047] CDCG's networking architecture enables adding and dropping multiple identical wavelengths within the same local dimension, avoiding wavelength conflicts and achieving capacity independence. Its add / drop ports are also wavelength- and direction-independent. Furthermore, the channel spacing can be dynamically adjusted, enabling the scheduling of wavelengths at different intervals, achieving grid independence. This latest-generation optical layer networking architecture is highly advantageous for network planning, deployment, commissioning, and maintenance.

[0048] For example, refer to Figure 1 As shown, the embodiment of the present application provides a schematic diagram of a communication network, showing a possible CDCG networking architecture. Figure 1 As shown, the network architecture includes a client side and a line side, with communication between the client side and the line side being achieved via a local dimension. The line side can transmit different wavelengths in different directions and typically includes one or more optical communication devices. The client side can provide different access wavelengths (e.g., λ1 to λn) for the communication network.

[0049] Specifically, refer to Figure 1 As shown, the client side can provide different access wavelengths. For example, the access wavelength can include multiple different wavelengths, multiple identical wavelengths (for example, λ1 and λ3 are the same), etc. The communication network can realize multiple different wavelengths up and down, and multiple identical wavelengths up and down through a local dimension; it can also realize any optical line direction (for example Figure 1 The wavelength transmission from direction 1 to direction n) in the above is also able to schedule the wavelength interval. Figure 1 The networking architecture shown can implement CDCG networking.

[0050] In one possible implementation, the client side includes a client device. For example, the client device may be a client-side device in the following embodiments of the present application. Optionally, the client device may be a switch, or other corresponding device capable of implementing its functions. In other examples, the communication network also includes a cross-device. The embodiments of the present application do not limit the types and number of devices that may be included in the communication network, nor do they limit the types and number of devices of the client devices and cross-devices mentioned above. For ease of explanation, only the following examples are used here. Figure 1 The communication network shown is taken as an example, and the embodiments of the present application should not be limited thereto.

[0051] However, when the computing power network is deployed through the CDCG networking architecture, its computing power and storage capacity have tidal demand characteristics, that is, for most of the time, the computing power network only needs to carry out daily business that occupies less computing power or storage capacity (the amount of data required to transmit the business is relatively small, and occupies less transmission resources), and within a certain period of time, it needs to carry out business that occupies a large amount of computing power or storage capacity.

[0052] based on Figure 1 The architecture shown is exemplary, with reference to Figure 2 As shown, the embodiment of the present application provides an application scenario diagram of a computing power network. Figure 2 As shown, the application scenario includes: computing power center, multiple data call units (i.e. Figure 2 The data call units 202-1 to 202-4 in the data call unit and the transmission network 203 are provided. The transmission network 203 can provide transmission resources, such as transmission bandwidth, for the services between the computing power center and the data call units. It is not difficult to understand that when the data call unit needs to call data, the computing power center in the transmission network 203 needs to provide it with the corresponding computing power or storage capacity.

[0053] Generally speaking, multiple data call units are deployed in different geographical locations. The computing power center can generate a large amount of data (such as sampling data, observation data, etc.) within a certain period of time. Different data call units will call part of the data generated by the computing power center, or all of the data. Among them, a certain data call unit needs to call data and needs to call the corresponding transmission resources to ensure that the data call unit can quickly obtain the data. After the data transmission of the call is completed, the transmission resources occupied by the data call are released and can be used by another data call unit. In this way, the transmission resources need to connect to different data call units at different times to complete the data transmission in different scenarios. After completion, the occupied transmission resources will be released and will not be occupied for a long time.

[0054] Typically, between the computing center and different scientific research units, there are scenarios of task-based big data transmission and burst-based data transmission tasks. For example, the computing center 201 is an astronomical observation center, and the data call units 202-1 to 202-4 are scientific research units in different locations. Figure 2 As shown, computing center 201 generates 5,000 terabytes (TB) of astronomical observation data daily. This data is then used by multiple research institutions in different locations. Therefore, each research institution accessing this data requires a corresponding level of transmission bandwidth, potentially reaching TBs. Once the data being accessed is transmitted, this bandwidth is released for use by other research institutions.

[0055] Similar task-based and bursty data transmission tasks also exist in computing network applications such as East-West Data Storage and East-West Data Computing. However, because these tasks, such as task-based and bursty data transmission, and other similar transmission tasks, exhibit tidal characteristics (not continuous), deploying fixed transmission resources for every transmission link in the transmission network would result in significant waste of transmission resources.

[0056] Based on the above, the above problems are usually solved through the capacity pool technical solution. Specifically, the basic feature of the capacity pool technical solution is to enable a part of the transmission resources to be dynamically shared. In this way, when a certain transmission direction (data calling unit) needs to call data, that is, when large data needs to be moved, the dynamically shared transmission resources can be temporarily and quickly allocated to the corresponding transmission link. In addition, the capacity pool technical solution can release the called dynamic shared transmission resources after completing a transmission task, and then reallocate the transmission resources to other transmission links according to the needs of the transmission task, so as to ensure that the transmission task (including task-based large data transmission, burst data transmission tasks, etc.) can proceed smoothly.

[0057] For example, refer to Figure 3 As shown, the embodiment of the present application provides an architecture diagram of a communication network, showing a network architecture that can implement the capacity pool technical solution. Figure 3 As shown, the communication network includes: multiple client-side devices deployed on the client side (i.e. Figure 3 Switches 301-1 to 301-N in the switch), multiple tributary (T) boards (ie Figure 3 T-board 302-1 to T-board 302-N), cross-board ( Figure 3 Cross board 303 in the middle), multiple (electrical layer) circuit boards (ie N boards) (ie Figure 3 N board 304-1 to N board 304-N in the optical branch board (ie Figure 3 The optical branch board 305-1 to the optical branch board 305-N in the optical branch board 305-1 to the optical branch board 305-N), the optical cross-connect board 306 and multiple optical circuit boards (ie Figure 3 The optical circuit board 307-1 to the optical circuit board 307-N).

[0058] Optionally, the optical branch boards 305-1 to 305-N can be implemented by CDG functional units. For example, the optical branch boards 305-1 to 305-N are all CDG boards. In one possible implementation, Figure 3 One or more switches in the cluster are fabric adapter (FA) switches. Figure 3 The network architecture shown in the figure is used as an example, and should not be used to limit the specific implementation of the capacity pool technical solution, the type of equipment in the communication network, the number of equipment, etc. In one possible implementation, the above communication network also includes multiple line-side devices ( Figure 3 not shown).

[0059] Specifically, taking the N board 304-N and the optical branch board 305-N as an example, refer to Figure 3 As shown, in the upstream direction, the transmission task (also known as a service) originates from client-side equipment, including switches 301-1 through 301-N. The switch transmits the data required for the service to the T-board (including T-boards 302-1 through 302-N). The cross-connect board 303 processes the data received from the T-board (e.g., data integration) before transmitting it to the N-board 304-N. The data is ultimately transmitted to the optical tributary board 305-N, which dispatches the service to the connected optical circuit board (including optical circuit board 307-1 through optical circuit board 307-N). Furthermore, any optical circuit board can be used to connect to line-side equipment, meaning that any optical circuit board can correspond to a long-distance transmission path for a service. Thus, any optical circuit board can transmit the service to the corresponding line-side equipment, enabling service transmission from the client side to the line side. The transmission process in the downstream direction can refer to the transmission process in the upstream direction described above and will not be further described here.

[0060] in, Figure 3 The transmission resources that can be used to achieve sharing are the N boards and optical tributary boards with bold lines, that is, the capacity pool comes from Figure 3 Of course, the realization of the capacity pool also comes from the upstream and downstream scheduling function units ( Figure 3 In addition, Figure 3The N boards 304-1 to 304-N-1 and the optical tributary boards 305-1 to 305-N-1 can be used for transmission of daily services of the communication network.

[0061] In this way, the capacity pool can allocate shared transmission resources to different optical line directions (i.e., line-side equipment corresponding to different optical circuit boards) based on service transmission needs. Furthermore, to avoid conflicts with wavelengths used for routine service transmission in the communication network, different wavelengths need to be allocated to line-side equipment corresponding to different optical line directions to ensure smooth service transmission on the line side. In light of the above, the N boards in the capacity pool must possess the following capabilities: first, they must be able to transmit any wavelength (optical signal) based on service transmission needs; second, they must be able to simultaneously transmit several groups (i.e., multiple) of the same wavelength (optical signals) based on service transmission needs. Furthermore, the optical tributary boards in the capacity pool must possess CDCG functionality, namely, the ability to receive optical signals of different wavelengths transmitted by different N boards (i.e., wavelength-independent), multiple optical signals of the same wavelength transmitted by different N boards (i.e., capacity-independent), optical signals transmitted by different N boards that need to be transmitted to any optical circuit board (i.e., direction-independent), and the ability to schedule (or adjust) the wavelength intervals of optical signals transmitted by different N boards (i.e., grid-independent).

[0062] Based on the above, the implementation of the capacity pool technology solution needs to rely on the following two aspects: On the one hand, it is necessary to deploy N-boards (i.e., electrical circuit boards) that can adjust the wavelength of optical signals. For example, the N-board can transmit optical signals of any wavelength according to the needs of business transmission. For another example, the N-board can simultaneously transmit multiple optical signals of the same wavelength according to the needs of business transmission. On the other hand, it is necessary to deploy optical branch boards with CDCG functions. However, due to the limitations of related technologies, optical branch boards with CDCG functions still have defects, which makes the implementation of the capacity pool technology solution still face difficulties.

[0063] Based on the above problems, the capacity pool technology solution can usually be implemented by deploying an optical branch board with CDCG function. Figure 3 The architecture shown is exemplary, with reference to Figure 4 As shown, the embodiment of the present application provides an architecture diagram of a communication network, showing a network architecture that can implement the capacity pool technical solution. Figure 4 As shown, the communication network includes: multiple N boards (N boards 304-1 to 304-N), multiple optical branch boards 305-1 to 305-N-1, an optical cross-connect board 306, multiple optical circuit boards 307-1 to 307-N, and an optical branch board 308.

[0064] Optionally, the above-mentioned optical branch boards 305-1 to 305-N-1 can be implemented by CDG functional units. For example, the optical branch boards 305-1 to 305-N-1 are all CDG boards. In one possible implementation, the above-mentioned optical branch board 308 can be implemented by a CDCG functional unit. Among them, the CDCG functional unit can be a board with CDCG function (also called a CDCG board). Specifically, the CDCG board can be connected to multiple N boards, so as to perform up and down optical signals with the connected N boards; at the same time, the CDCG board can also combine / demultiplex the received optical signals and transmit the received optical signals to different optical circuit boards. It is not difficult to understand that for the sake of convenience of explanation, only the optical board 308 is used here. Figure 4 Taking the network architecture shown as an example, it should not be used to limit the specific implementation method of the capacity pool technical solution, the type of equipment in the communication network, the number of equipment, etc.

[0065] Specifically, taking the N board 304-N and the optical branch board 308 as an example, refer to Figure 4 As shown, in the uplink direction, N board 304-N can receive service data and transmit it to optical tributary board 308, which dispatches the service to the connected optical circuit board (including optical circuit board 307-1 through optical circuit board 307-N). Furthermore, any optical circuit board can transmit the service to the corresponding line-side equipment. The transmission process in the downlink direction can refer to the transmission process in the uplink direction described above and will not be repeated here.

[0066] Then, the deployment of the capacity pool technical solution can be realized through the above-mentioned CDCG functional unit (ie, optical tributary board 308) and N board (ie, N board 304-N).

[0067] Typically, the specifications of commercial CDCG functional units (i.e., the number of ports, for example, the number of ports connected to the N board * the number of ports connected to the optical circuit board) include: 8*16, 8*24, and 16*15. In this way, the CDCG functional unit can usually only transmit services to 8 optical circuit boards or 16 optical circuit boards, that is, the line-side scheduling capability of the CDCG functional unit is 8-dimensional or 16-dimensional (not exceeding 16-dimensional). In addition, the CDCG functional unit can only realize the up and down of optical signals through 16 ports, 24 ports, 15 ports, etc. However, actual application scenarios often require a line-side scheduling capability greater than 16 dimensions, that is, the CDCG functional unit needs to transmit services to more than 16 optical circuit boards. Therefore, when the number of optical circuit boards exceeds 16, that is, the line-side scheduling capability of the CDCG functional unit needs to exceed 16 dimensions, the above-mentioned solution will find it difficult to implement the capacity pool technical solution by deploying only one CDCG functional unit.

[0068] On the other hand, since the CDCG functional unit in the above solution can only transmit services to the connected optical line board (corresponding to different line-side directions), the N board it is connected to can only realize the sharing of transmission resources in the optical line direction covered by the CDCG functional unit, and cannot achieve 100% pooled sharing of transmission resources in the capacity pool. Therefore, the above solution does not have the ability to transmit services to all line-side directions through the same set of N boards.

[0069] Therefore, if the above solution is adopted, the communication network needs to deploy multiple CDCG functional units to ensure that the service is transmitted to more than 16 optical circuit boards, so that the line-side scheduling capability is greater than 16 dimensions to achieve coverage of more line-side directions.

[0070] Based on the above problems, the capacity pool technology solution can usually be implemented by deploying multiple optical branch boards with CDG functions. Figure 3 The architecture shown is exemplary, with reference to Figure 5 As shown, the embodiment of the present application provides an architecture diagram of a communication network, showing a network architecture that can implement the capacity pool technical solution. Figure 5 As shown, the communication network includes: multiple N boards (N boards 304-1 to 304-N), an optical branch board 305-1, an optical cross-board 306, multiple optical circuit boards 307-1 to optical circuit boards 307-N and optical branch boards 308-1 to optical branch boards 308-M.

[0071] Optionally, the optical tributary board 305-1 can be implemented using a CDG functional unit. For example, the optical tributary board 305-1 is a CDG board. In one possible implementation, the optical tributary boards 308-1 through 308-M can all be implemented using a CDG functional unit. The CDG functional unit can be a board with CDG functionality (also referred to as a CDG board).

[0072] Specifically, take N board 304-2 to N board 304-N and optical branch board 308-1 to optical branch board 308-M as an example, refer to Figure 5 As shown, in the uplink direction, N boards 304-2 through 304-N can all receive service data and then transmit the received service data to optical tributary boards 308-1 through 308-M, respectively. Optical tributary boards 308-1 through 308-M then dispatch the service data to their connected optical circuit boards 307-1 through 307-N, respectively. Furthermore, any optical circuit board can transmit the service data to the corresponding line-side equipment. The downlink transmission process can be referenced to the uplink transmission process described above and will not be further described here.

[0073] Then, the deployment of the capacity pool technical solution can be jointly realized through the above-mentioned multiple CDG functional units (i.e., optical branch board 308-1 to optical branch board 308-M) and multiple N boards (i.e., N board 304-2 to N board 304-N). Usually, the number of CDG boards deployed in the above-mentioned solution is the same as the number of optical circuit boards. Of course, the number of deployed CDG boards can also be adjusted according to the needs of the actual application scenario, and the embodiments of the present application do not limit this. Specifically, one side of any CDG board is connected to the optical circuit board that the business needs to be scheduled, so as to ensure that the business can be scheduled to the connected optical circuit board; at the same time, the other side of any CDG board can be connected to multiple N boards, so as to realize the uplink and downlink of optical signals with the connected N board (i.e., transmission in the uplink and downlink directions), combine / demultiplex the received optical signals, and transmit the received optical signals to different optical circuit boards.

[0074] However, a CDG board cannot receive multiple optical signals of the same wavelength transmitted by different N boards. A single CDG board cannot simultaneously access multiple optical signals of the same wavelength. This means that a CDG board lacks capacity-independent functionality. Consequently, implementing a capacity pool solution requires deploying multiple CDG boards to add, drop, and schedule multiple optical signals of the same wavelength. This approach, however, will result in underutilization of the N boards in the capacity pool, resulting in a low level of pooled sharing of transmission resources and making it difficult to achieve full pooled sharing.

[0075] Furthermore, based on the above solution, if the line-side scheduling capabilities of optical tributary boards (e.g., CDCG functional units) are enhanced through this solution, ensuring that services can be transmitted to a greater number of optical circuit boards, the number of wavelength selective switches within the optical tributary boards needs to be increased. However, due to limitations such as the hardware size of the optical tributary boards, increasing the number of wavelength selective switches will result in larger hardware sizes for the optical tributary boards, occupying more space during deployment, which may lead to higher deployment costs for the transmission network.

[0076] Based on the above problems, for example, refer to Figure 6 As shown, an embodiment of the present application provides a schematic diagram of an optical branch board. For ease of description, the optical branch board is identified as an optical branch board 10. The optical branch board is applied to a transmission network, which includes multiple client-side devices ( Figure 6 The customer side equipment 601-1 to the customer side equipment 601-N) and multiple line side equipment ( Figure 6 Line side equipment 602-1 to line side equipment 602-M in combination Figure 6 As shown, the optical branch board includes: multiple line side ports ( Figure 6 Line side ports 603-1 to line side ports 603-N in the device side), multiple device side ports ( Figure 6The device side port 604-1 to the device side port 604-M) and M wavelength selective switches (wavelength selective switching, WSS) ( Figure 6 WSS 605-1 to WSS 605-M); wherein each wavelength selective switch includes: 1 common port and N branch ports.

[0077] In a possible implementation, the number N of line-side ports of the optical tributary board is greater than 16. It is easy to understand that for ease of description, only 16 ports are used here. Figure 6 The network architecture shown in the figure is used as an example, and should not be used to limit the specific implementation of the capacity pool technical solution, the type of equipment in the communication network, the number of equipment, etc. Figure 6 One or more client side devices may be FA switches. For example, the optical tributary board and the client side device may further include one or more N boards ( Figure 6 not shown).

[0078] Reference Figure 6 As shown, the optical branch board has a common port ( Figure 3 The common ports 1 to 604-M in the figure are used to connect to the equipment side ports of the optical branch board (i.e., the equipment side ports 604-1 to 604-M). The N branch ports of the wavelength selective switch ( Figure 3 The branch port 11 to the branch port NM in the optical tributary board are used to connect to the line-side ports of the optical tributary board (i.e., line-side port 603-1 to line-side port 603-N), respectively; the device-side port of the optical tributary board is used to connect to the customer-side equipment (i.e., customer-side equipment 601-1 to customer-side equipment 601-N), and the line-side port of the optical tributary board is used to connect to the line-side equipment (i.e., line-side equipment 602-1 to line-side equipment 602-M).

[0079] Functionally, in the upstream direction: the optical tributary board is configured to receive an optical signal (e.g., a first optical signal) transmitted by a first client-side device through a first device-side port, and transmit the first optical signal to a common port (e.g., common port 1) of a first wavelength selective switch. The first device-side port is one of the M device-side ports (i.e., device-side port 604-1 to device-side port 604-M) of the optical tributary board, such as device-side port 604-1; the first client-side device is one of a plurality of client-side devices (i.e., client-side device 601-1 to client-side device 601-N), such as client-side device 601-1; and the first wavelength selective switch is one of the M wavelength selective switches (i.e., WSS 605-1 to WSS 605-M), such as WSS 605-1.

[0080] WSS 605-1 distributes the received first optical signal to its first branch port (e.g., branch port 11) based on the wavelength of the signal, and outputs the signal to the first line-side port. The first line-side port is one of the N line-side ports (i.e., line-side ports 603-1 through 603-N) on the optical tributary board, for example, line-side port 603-1. Line-side port 603-1 then outputs the first optical signal to the first line-side device. The first line-side device is one of the multiple line-side devices (i.e., line-side devices 602-1 through 602-M), for example, line-side device 602-1.

[0081] And, in the downstream direction: the optical branch board is also used to receive a second optical signal sent by a second line-side device (e.g., line-side device 602-2) through a second line-side port (e.g., line-side port 603-2), and transmit the second optical signal to a first branch port (e.g., branch port 22) of a second wavelength selective switch (e.g., WSS 605-2); WSS 605-2 outputs the second optical signal to a second device-side port (device-side port 604-2) through a common port (e.g., common port 2), and outputs it to a second customer-side device (customer-side device 601-2) through the device-side port 604-2.

[0082] Optionally, the first device-side port and the second device-side port can be the same device-side port or different device-side ports. Similarly, the first wavelength selective switch and the second wavelength selective switch can be the same or different; the first line-side device and the second line-side device can be the same or different; the first client-side device and the second client-side device can be the same or different; and the first optical signal and the second optical signal can be the same or different. It is not difficult to understand that the first and second mentioned above are only used to illustrate the transmission process of the optical signal and should not be used to limit the embodiments of the present application.

[0083] Based on the above, the device-side port of the optical branch board can receive the optical signal sent by the client-side device and transmit it to the wavelength selective switch, and the wavelength selective switch distributes the optical signal to any branch port, and then the line-side port outputs the optical signal to the line-side device; and the line-side port of the optical branch board can receive the optical signal sent by the line-side device and transmit it to any branch port of the wavelength selective switch, and then the wavelength selective switch outputs the optical signal to the device-side port, and then the device-side port outputs the optical signal to the client-side device.

[0084] Then, the above-mentioned optical branch board can demultiplex the optical signal received from the client-side device to any line-side port according to the wavelength of the optical signal through the wavelength selective switch, and then output it to the line-side device, and combine the optical signal received from the line-side device to any device-side port according to the wavelength of the optical signal, and then transmit it to the client-side device.

[0085] Furthermore, this optical branch board eliminates the need to increase the number of wavelength selective switches to improve line-side scheduling capabilities. In one possible implementation, this optical branch board can effectively improve its line-side scheduling capabilities simply by increasing the number of branch ports on the WSS. Thus, compared to increasing the number of wavelength selective switches, the above-described embodiments of the present application not only ensure that services can be transmitted to more line-side directions, effectively improving the line-side scheduling capabilities of the optical branch board, but also have a minimal impact on the space occupied by the optical branch board, thereby reducing the deployment costs of the transmission network.

[0086] Optionally, the optical branch board also includes a micro-electromechanical system MEMS ( Figure 6 (not shown). Specifically, one side of the MEMS is used to connect to the line-side port of the optical branch board, and the other side of the MEMS is used to connect to any branch port of the wavelength selective switch. Exemplarily, the MEMS is functionally configured to receive optical signals output from the branch port of the wavelength selective switch and output the optical signals to the line-side port; and to receive optical signals sent from the line-side device and transmit the optical signals to the branch port of the wavelength selective switch.

[0087] The aforementioned optical tributary board can be implemented using a CDCG functional unit. In one possible implementation, the optical tributary board is a single CDCG board. Specifically, all N boards in the capacity pool are connected to the same CDCG functional unit, which can dispatch optical signals to more than 20 different line-side directions. This capacity pool, formed by the CDCG functional unit and all N boards, enables 100% pooled sharing of transmission resources.

[0088] In this way, the optical tributary board can dispatch optical signals to more dimensional line-side directions, even transmitting services to more than 20 optical line boards, thereby effectively improving the line-side dispatching capability of the optical tributary board (over 20 dimensions). Therefore, the optical tributary board provided by the above solution has the ability to dispatch optical signals to more optical line directions, breaking the limitation of line-side dispatching capability of no more than 16 dimensions, thereby improving the pooled sharing of transmission resources in the capacity pool.

[0089] Specifically, in the upstream direction:

[0090] In one possible implementation, the optical branch board is further configured to receive a third optical signal transmitted by the first client-side device through the first device-side port and transmit the third optical signal to the common port of the first wavelength selective switch; wherein the wavelength of the third optical signal is different from the wavelength of the first optical signal; the first wavelength selective switch distributes the third optical signal to the second branch port of the first wavelength selective switch based on the wavelength of the received third optical signal, and outputs the third optical signal to a third line-side port, which is one of the N line-side ports; and the third line-side port outputs the third optical signal to a third line-side device, which is one of the multiple line-side devices, through the third line-side port. In this way, the optical branch board can receive two optical signals (i.e., the first optical signal and the third optical signal) with different wavelengths transmitted by the same client-side device (i.e., the first client-side device) through the same device-side port (i.e., the first device-side port), demultiplex the two received optical signals to different line-side ports (i.e., the first line-side port and the third line-side port) through the wavelength selective switch (i.e., the first wavelength selective switch), and then output the two optical signals to the line-side devices (i.e., the first line-side device and the third line-side device).

[0091] Then, the above solution can demultiplex the optical signal received by the device-side port according to the wavelength of the optical signal through the wavelength selective switch in the optical tributary board.

[0092] It should be noted that the first line-side port and the third line-side port described above can be the same device-side port or different device-side ports. Similarly, the first line-side device and the third line-side device described above can be the same or different; the first line-side device and the third line-side device can be the same or different. It is understood that the first, second, etc. described above are used to illustrate the optical signal transmission process and should not be used to limit the embodiments of this application.

[0093] In one possible implementation, the optical branch board is further configured to receive a fourth optical signal sent by a third client-side device through a third device-side port, and transmit the fourth optical signal to a common port of a third wavelength selective switch; the third wavelength selective switch distributes the fourth optical signal to a first branch port of the third wavelength selective switch based on a wavelength of the received fourth optical signal, and outputs the fourth optical signal to a fourth line-side port, which is one of the N line-side ports; wherein the wavelength of the fourth optical signal is the same as that of the first optical signal; and the fourth line-side port outputs the fourth optical signal to a fourth line-side device, which is one of the multiple line-side devices, through the fourth line-side port. In this way, the above-mentioned optical tributary board can receive two optical signals (i.e., the first optical signal and the fourth optical signal) with the same wavelength sent by different client-side devices (i.e., the first client-side device and the third client-side device) through different device-side ports (i.e., the first device-side port and the third device-side port), transmit the received two optical signals to different line-side ports (i.e., the first line-side port and the fourth line-side port) through different wavelength selective switches (i.e., the first wavelength selective switch and the third wavelength selective switch), and then output them to different line-side devices (i.e., the first line-side device and the fourth line-side device).

[0094] Then, the above solution can transmit optical signals with the same wavelength received by different device-side ports to different line-side devices through different wavelength selective switches in the optical tributary board, thereby realizing the transmission of optical signals with the same wavelength.

[0095] It should be noted that the first device-side port and the third device-side port can be the same device-side port or different device-side ports. Similarly, the first client-side device and the third client-side device can be the same or different; the first wavelength selective switch and the third wavelength selective switch can be the same or different; and the first line-side device and the fourth line-side device can be the same or different. It is readily understood that the first, second, etc., mentioned above are used to illustrate the optical signal transmission process and should not be construed as limiting the embodiments of this application.

[0096] Specifically, in the downlink direction:

[0097] In one possible implementation, the optical branch board is further configured to receive a fifth optical signal transmitted by a fifth line-side device via a fifth line-side port; transmit the fifth optical signal to a second branch port of a second wavelength selective switch; and the second wavelength selective switch outputs the fifth optical signal to a second device-side port via a common port, and then outputs the fifth optical signal to a second client-side device via the second device-side port. In this way, the optical branch board can receive two optical signals (the second optical signal and the fifth optical signal) transmitted by different line-side devices (i.e., the second line-side port and the fifth line-side port) via different line-side ports (i.e., the second line-side port and the fifth line-side port), multiplex the two received optical signals to the same device-side port (i.e., the second device-side port) via the wavelength selective switch (i.e., the second wavelength selective switch), and then output the signals to the same client-side device (i.e., the second client-side device).

[0098] Then, the above solution can combine the optical signals received by different line-side ports through the wavelength selective switch in the optical tributary board and transmit them to the same line-side device.

[0099] It should be noted that the wavelengths of the second optical signal and the fifth optical signal may be the same or different, and the embodiments of the present application do not limit this.

[0100] In some examples, structurally, the device-side port of the aforementioned optical tributary board is further configured to connect to a client-side device via an optical splitter, wherein the optical splitter includes a common port and K branch ports; the common port of the optical splitter is configured to connect to the first device-side port of the optical tributary board, and the branch ports of the optical splitter are configured to connect to the client-side device. For example, functionally, the optical tributary board receives a first optical signal transmitted by a first client-side device via the first branch port of the optical splitter, and outputs a second optical signal received from a second device-side port to a second client-side device via the common port of the optical splitter.

[0101] Furthermore, if the optical branch board is applied to computing network scenarios, it can effectively solve resource sharing during tidal capacity demand, reduce the networking cost of the transmission network, and improve resource utilization.

[0102] based on Figure 6 The architecture shown is exemplary, with reference to Figure 7 As shown, an embodiment of the present application provides a schematic diagram of a transmission network, illustrating a possible deployment scenario of the optical branch board provided in the embodiment of the present application. Figure 7 As shown, the transmission network includes: multiple client side devices ( Figure 7 The customer side equipment 601-1 to the customer side equipment 601-M), multiple line side equipment ( Figure 7The line side equipment 602-1 to the line side equipment 602-M) and the optical branch board 1. The optical branch board 1 includes the optical branch board 10 provided in the embodiment of the present application (refer to Figure 6 ), so in Figure 7 The optical branching board 1 is identified as an optical branching board 10 .

[0103] It is easy to understand that for the sake of convenience, only Figure 7 The transmission network shown in FIG. 1 is taken as an example, and this should not be used to limit the embodiments of the present application. In other examples, the transmission network may also include other possible devices or apparatuses. In one possible implementation, the transmission network may also include one or more conversion units ( Figure 7 OUT608-1 to OUT 608-N in the figure), wherein one side of any conversion unit is used to connect to the optical tributary board, and the other side is used to connect to the client-side device. Optionally, the conversion unit can be an optical transform unit (OUT), which is responsible for access processing of optical signals.

[0104] Optionally, the transmission network further includes one or more optical branch boards (e.g., optical branch boards 606-1 to 606-P), which can be used for the transmission of daily services (the amount of data required to be transmitted by the services is relatively small) of the transmission network. In one possible implementation, the transmission network further includes one or more optical circuit boards ( Figure 7 The optical circuit board 607-1 to the optical circuit board 602-M) in the optical circuit board are used to realize the transmission of optical signals. Optionally, the transmission network also includes an optical cross-connect board.

[0105] The transmission process of the optical signal through the optical tributary board 10 in the above-mentioned transmission network can refer to the above-mentioned embodiments of the present application, and will not be repeated here.

[0106] In one possible implementation, based on Figure 7 The architecture shown is exemplary, with reference to Figure 8 As shown, an embodiment of the present application provides a schematic diagram of a transmission network, illustrating a possible deployment scenario of the optical branch board provided in the embodiment of the present application. Figure 8 As shown, the transmission network further includes: an optical splitter, which includes a common port and K branch ports.

[0107] It is easy to understand that for the sake of convenience, only Figure 8 The transmission network shown is taken as an example, and the embodiments of the present application should not be limited thereto. In other examples, the transmission network may also include other possible devices or apparatuses.

[0108] Specifically, the common port of the optical splitter is used to connect to any device-side port of the optical tributary board 10, while the K branch ports of the optical splitter are used to connect to multiple client-side devices. Thus, in this transmission network, the device-side port of the optical tributary board can be connected to the common port of the optical splitter, and then connected to multiple client-side devices through the multiple branch ports of the optical splitter.

[0109] Functionally, in this transmission network, the optical tributary board receives optical signals sent by client-side devices through the branch ports of the optical splitter, and outputs the optical signals received from the device-side ports to the client-side devices through the common port of the optical splitter. Thus, any device-side port of the optical tributary board can receive multiple optical signals from different client-side devices through the multiple branch ports of the connected optical splitter, and output the optical signals received from the device-side port to the client device through the common port of the optical splitter.

[0110] Then, the above scheme can receive optical signals sent by multiple client-side devices through the multiple branch ports of the splitter, and then combine the received multiple optical signals and transmit them to any client-side port of the optical branch board. It can also split the optical signal transmitted by any client-side port of the optical branch board and transmit it to any client-side device.

[0111] In one possible implementation, for example, referring to Figure 9 As shown, at least two line-side ports of the optical tributary board 10 are connected to the same line-side device (e.g., line-side device 602-1). Thus, the optical tributary board 10 can transmit optical signals received from client-side devices to the same line-side device through the at least two line-side ports, and receive optical signals sent by the same line-side device through the at least two line-side ports.

[0112] Then, the above solution improves the transmission efficiency of the transmission network by connecting multiple line-side ports to the same line-side device, so that the line-side device can simultaneously receive multiple optical signals from different line-side ports, and enables the optical signal sent by the same line-side device to be transmitted to multiple different line-side ports.

[0113] based on Figure 7 and Figure 8 The architecture shown is exemplary, with reference to Figure 10 As shown, an embodiment of the present application provides a schematic diagram of a transmission network, illustrating a possible deployment scenario of the optical branch board provided in the embodiment of the present application. Figure 10 As shown, the transmission network further includes: an optical branch board 2; wherein the optical branch board 2 includes the optical branch board 10 provided in the embodiment of the present application (refer to Figure 6 ), so in Figure 10 The optical branch board 2 is identified as an optical branch board 11 .

[0114] Specifically, structurally, at least one line-side port on optical branch board 10 and at least one line-side port on optical branch board 11 are connected to the same line-side device (e.g., line-side device 602-1). Therefore, in the above solution, at least one line-side port on both optical branch boards (i.e., optical branch board 10 and optical branch board 11) is connected to the same line-side device.

[0115] Functionally, both the optical tributary board 10 and the optical tributary board 11 can transmit optical signals received from client-side equipment to the same line-side equipment through at least one line-side port, and receive optical signals sent by the same line-side equipment through at least one line-side port.

[0116] In this way, the above solution enables the line-side device to simultaneously receive multiple optical signals from different optical tributary boards, and enables the optical signal sent by the same line-side device to be transmitted to multiple line-side ports belonging to different optical tributary boards.

[0117] For example, refer to Figure 11 As shown, an embodiment of the present application provides a schematic diagram of a transmission network, illustrating a deployment scenario of an optical branch board provided in an embodiment of the present application. Figure 11 As shown, the transmission network includes: multiple client side devices ( Figure 11 The customer side equipment 701-1 to the customer side equipment 701-N in the embodiment of the present invention), multiple line side equipment ( Figure 11 Line side equipment 702-1 to line side equipment 702-N in the optical fiber), at least one optical switch and an optical tributary board ( Figure 11 Specifically, the optical switch includes: M common ports ( Figure 11 Common port 1 to common port N) and N branch ports ( Figure 11 Branch port 1 to branch port N in the optical branch board); the optical branch board includes: M device side ports ( Figure 11 Device side ports 703-1 to 703-M in the device side), N line side ports ( Figure 11 Line side ports 704-1 to line side ports 704-N) and a plurality of wavelength selective switches ( Figure 11 WSS 705-1 to WSS 705-M), wherein the wavelength selective switch includes: 1 common port and N branch ports.

[0118] Specifically, refer to Figure 11As shown, the common port of the optical switch is used to connect to the device-side port of the optical tributary board, the branch port of the optical switch is used to connect to the line-side equipment, and the line-side port of the optical tributary board is used to connect to the client-side equipment. The common port of the wavelength selective switch is used to connect to the device-side port, and the branch port of the wavelength selective switch is used to connect to the line-side port. Thus, structurally: the multiple branch ports of the optical switch are respectively connected to multiple line-side equipment, the multiple common ports of the optical switch are respectively connected to multiple line-side ports of the optical tributary board, and the multiple line-side ports of the optical tributary board are respectively connected to multiple client-side equipment.

[0119] Functionally, the line-side port of the optical branch board in the transmission network can receive the optical signal sent by the client-side device and transmit it to the wavelength selective switch, transmit the optical signal to the device-side port through the common port of the wavelength selective switch, and then output the optical signal to the line-side device through the branch port of the optical switch; at the same time, the transmission network can also receive the optical signal sent by the line-side device through the branch port of the optical switch, transmit the optical signal to the device-side port of the optical branch board through the common port of the optical switch, the device-side port of the optical branch board receives the optical signal and transmits the optical signal to the common port of the wavelength selective switch; the wavelength selective switch distributes the optical signal to the branch port of the wavelength selective switch according to the wavelength of the received optical signal, and outputs it to the line-side port; and then outputs the optical signal to the client-side device through the line-side port.

[0120] Through the above scheme, the transmission network can receive the optical signal transmitted by the common port of the optical switch (sent by the line-side device) through the common port of the wavelength selective switch in the optical branch board connected to the device-side port, and demultiplex the optical signal according to the wavelength of the optical signal to any line-side port, and then output it to the customer-side device. In addition, the optical signal received from the customer-side device by the line-side port of the optical branch board is multiplexed to any device-side port, and then transmitted to the line-side device.

[0121] Then, the above-mentioned transmission network can realize the scheduling of optical signals to more optical line directions, which can effectively improve the pooled sharing level of transmission resources in the capacity pool.

[0122] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)). In an embodiment of the present application, the computer may include the device described above.

[0123] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0124] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. An optical branch board, characterized in that: Applied to a transmission network, the transmission network including a plurality of client-side devices on the client side and a plurality of line-side devices on the line side; The optical tributary board includes: N line-side ports, M device-side ports and M wavelength selective switches; The wavelength selective switch includes: 1 common port and N branch ports, the common port of the wavelength selective switch is used to connect to the device-side port, and the branch port of the wavelength selective switch is used to connect to the line-side port; the device-side port is used to connect to the client-side device, and the line-side port is used to connect to the line-side device; The optical tributary board is configured to receive a first optical signal sent by a first client-side device through a first device-side port, and transmit the first optical signal to a common port of the first wavelength selective switch; the first device-side port is one of the M device-side ports, the first client-side device is one of the multiple client-side devices, and the first wavelength selective switch is one of the M wavelength selective switches; The first wavelength selective switch distributes the received first optical signal to a first branch port of the first wavelength selective switch according to the wavelength of the first optical signal, and outputs the first optical signal to a first line-side port, where the first line-side port is one of the N line-side ports; Outputting the first optical signal to a first line-side device through the first line-side port, where the first line-side device is one of the multiple line-side devices; as well as, The optical branch board is configured to receive a second optical signal sent by a second line-side device through a second line-side port, and transmit the second optical signal to the first branch port of the second wavelength selective switch; The second wavelength selective switch outputs the second optical signal to a second device-side port through a common port, and then outputs the second optical signal to a second client-side device through the second device-side port.

2. The optical branch board according to claim 1, characterized in that: The optical tributary board is further configured to receive a third optical signal sent by the first client-side device through the first device-side port, and transmit the third optical signal to the common port of the first wavelength selective switch; The first wavelength selective switch distributes the received third optical signal to the second branch port of the first wavelength selective switch according to the wavelength of the received third optical signal, and outputs the third optical signal to a third line-side port, where the third line-side port is one of the N line-side ports, and the wavelength of the third optical signal is different from that of the first optical signal; The third optical signal is outputted to a third line-side device through the third line-side port, where the third line-side device is one of the plurality of line-side devices.

3. The optical branch board according to claim 1, characterized in that: The optical tributary board is further configured to receive a fourth optical signal sent by a third client-side device through a third device-side port, and transmit the fourth optical signal to the common port of the third wavelength selective switch; The third wavelength selective switch distributes the fourth optical signal to the first branch port of the third wavelength selective switch according to the wavelength of the received fourth optical signal, and outputs the fourth optical signal to a fourth line-side port, where the fourth line-side port is one of the N line-side ports, and the wavelength of the fourth optical signal is the same as that of the first optical signal; The fourth optical signal is outputted to a fourth line-side device through the fourth line-side port, where the fourth line-side device is one of the plurality of line-side devices.

4. The optical branching board according to claim 1, characterized in that: The optical tributary board is further configured to receive a fifth optical signal sent by the fifth line-side device through a fifth line-side port; The fifth optical signal is transmitted to the second branch port of the second wavelength selective switch; the second wavelength selective switch outputs the fifth optical signal to the second device-side port through the common port, and outputs it to the second client-side device through the second device-side port.

5. The optical branching board according to any one of claims 1 to 4, characterized in that: The device-side port of the optical tributary board is further used to connect to the client-side device through an optical splitter; The optical splitter includes a common port and K branch ports; the common port of the optical splitter is used to connect to the first device-side port of the optical branch board, and the branch port of the optical splitter is used to connect to the client-side device.

6. The optical branching board according to any one of claims 1 to 5, characterized in that: The number N of line-side ports of the optical tributary board is greater than 16.

7. The optical branching board according to any one of claims 1 to 6, characterized in that: The optical branching board further includes a micro-electromechanical system, one side of the micro-electromechanical system is used to connect to the line-side port of the optical branching board, and the other side of the micro-electromechanical system is used to connect to any branch port of the wavelength selective switch; The micro-electromechanical system is specifically configured to receive the first optical signal outputted by the first branch port of the first wavelength selective switch, and output the first optical signal to the first line-side port; as well as, The second optical signal sent by the second line-side device is received, and the second optical signal is transmitted to the first branch port of the second wavelength selective switch.

8. A transmission network, characterized in that: The transmission network includes a plurality of client-side devices, a plurality of line-side devices, and a first optical tributary board; wherein the first optical tributary board includes the optical tributary board according to any one of claims 1 to 7.

9. The transmission network according to claim 8, characterized in that The transmission network further includes an optical splitter, wherein the optical splitter includes a common port and K branch ports; The common port of the optical splitter is used to connect to any one of the M device-side ports of the optical branch board, and the K branch ports of the optical splitter are used to connect to the multiple client-side devices.

10. The transmission network according to claim 8 or 9, characterized in that At least two line-side ports of the first optical tributary board are connected to the same line-side device.

11. The transmission network according to claim 8 or 9, characterized in that: The transmission network further includes a second optical branching board; wherein the second optical branching board includes the optical branching board according to any one of claims 1 to 7; At least one line-side port of the first optical tributary board and at least one line-side port of the second optical tributary board are connected to the same line-side device.

12. A transmission network, characterized in that: The transmission network includes a plurality of client-side devices, a plurality of line-side devices, at least one optical switch and an optical tributary board; The optical switch includes: M common ports and N branch ports; the common port of the optical switch is used to connect to the device-side port of the optical tributary board, the branch port of the optical switch is used to connect to the line-side device, and the line-side port of the optical tributary board is used to connect to the customer-side device; The optical branch board includes: N line-side ports, M device-side ports, and M wavelength selective switches; wherein the wavelength selective switch includes: 1 common port and N branch ports, the common port of the wavelength selective switch is used to connect to the device-side port, and the branch port of the wavelength selective switch is used to connect to the line-side port; The transmission network receives a first optical signal sent by a first client-side device through a first line-side port of an optical tributary board, and transmits the first optical signal to a first branch port of a first wavelength selective switch; the first line-side port is one of the N line-side ports, the first client-side device is one of the multiple client-side devices, and the first wavelength selective switch is one of the M wavelength selective switches; The first wavelength selective switch outputs the first optical signal to a first device-side port through a common port, the first device-side port outputs the first optical signal to a first common port of the optical switch, and the first branch port of the optical switch outputs the first optical signal to a first line-side device; the first device-side port is one of the M device-side ports, the first common port is one of the M common ports of the optical switch, and the first line-side device is one of the multiple line-side devices; as well as, The transmission network receives a second optical signal sent by a second line-side device through the second branch port of the optical switch, and transmits the second optical signal to the second device-side port of the optical tributary board through the second common port of the optical switch; The optical branch board receives the second optical signal through the second device-side port and transmits the second optical signal to the common port of the second wavelength selective switch; the second wavelength selective switch distributes the second optical signal to the first branch port of the second wavelength selective switch according to the wavelength of the received second optical signal, and outputs the second optical signal to the second line-side port; and the second line-side port outputs the second optical signal to the second client-side device.

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