WO2024098737A1

WO2024098737A1 - Bandwidth adjustment method, system, medium and product

Info

Publication number: WO2024098737A1
Application number: PCT/CN2023/098607
Authority: WO
Inventors: 杨三威; 张源斌; 朱金银
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-11-07
Filing date: 2023-06-06
Publication date: 2024-05-16
Also published as: CN118041785A

Abstract

Provided in the embodiments of the present application are a bandwidth adjustment method, a system, a medium and a product. Setting a bandwidth adjustment overhead in an overhead region of a path layer container and placing in the path layer the overhead of the path layer carried by a link layer reduce the overhead of the link layer; and the setting of the bandwidth adjustment overhead in the path layer container and mode settings of each node terminating and regenerating the bandwidth adjustment overhead achieve transmission, termination and regeneration of the bandwidth adjustment overhead on a forwarding plane, and complete end-to-end interaction of lossless bandwidth adjustment, thus reducing cooperative operations on a management and control level, reducing the complexity of bandwidth adjustment, lowering the development difficulty, and improving the reliability of the use of lossless bandwidth adjustment.

Description

Bandwidth adjustment method, system, medium and product

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with application number 202211382932.8 and application date November 7, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference.

Technical Field

The embodiments of the present application relate to the field of communication technology, and in particular to a bandwidth adjustment method, a communication system, a storage medium, and a program product.

Background technique

The pipe capacity of OTN equipment is fixed. Regardless of the size of the service, it occupies a fixed container, which easily leads to resource waste. Therefore, OTN bandwidth adjustment technology is proposed. OTN bandwidth adjustment technology can flexibly configure the capacity of the container according to the actual size of the service.

In the related art, bandwidth adjustment technology includes the adjustment of the link layer and the path layer, and the adjustment process involves the adjustment overhead of the corresponding layer. Specifically, when the traffic volume increases, the number of path layer containers supported in the link layer container increases, and the link layer container needs to use more multiframes to transmit the overhead related to the path layer container, which leads to an increase in the link layer overhead. Therefore, in the process of bandwidth adjustment, how to reduce the link layer overhead is an issue that needs to be discussed and solved urgently.

Summary of the invention

The embodiments of the present application provide a bandwidth adjustment method, system, medium and product, aiming to reduce link layer overhead.

In a first aspect, an embodiment of the present application provides a bandwidth adjustment method, defining a bandwidth adjustment overhead in an overhead area of a path layer container; setting a mode for the bandwidth adjustment overhead in the overhead area of the path layer container; and adjusting the bandwidth according to the bandwidth adjustment overhead and the mode.

In a second aspect, an embodiment of the present application provides a communication system, comprising: at least one processor; at least one memory for storing at least one program; when at least one of the programs is executed by at least one of the processors, the bandwidth adjustment method as described in the first aspect is implemented.

In a third aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the bandwidth adjustment method as described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer program product, comprising a computer program or a computer instruction, characterized in that the computer program or the computer instruction is stored in a computer-readable storage medium, a processor of a computer device reads the computer program or the computer instruction from the computer-readable storage medium, and the processor executes the computer program or the computer instruction, so that the computer device performs the bandwidth adjustment method as described in the first aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG2 is a flow chart of a bandwidth adjustment configuration method provided by an embodiment of the present application;

FIG3 is a flow chart of a bandwidth adjustment configuration method provided in an embodiment of the present application;

FIG4 is a flow chart of a bandwidth adjustment method provided by another embodiment of the present application;

FIG5 is a flow chart of a bandwidth adjustment method provided by another embodiment of the present application;

FIG6 is a flow chart of bandwidth increase adjustment provided by an example of the present application;

FIG7 is a flowchart of bandwidth reduction adjustment provided by an example of the present application;

FIG8 is a flowchart of processing bandwidth adjustment overhead in a path layer container provided by an example of the present application;

FIG. 9 is a schematic diagram of a communication system provided in accordance with an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

In the description of the embodiments of the present application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the embodiments of the present application based on the specific content of the technical solution.

In the embodiments of the present application, the words "further", "exemplarily" or "optionally" are used to indicate examples, illustrations or descriptions, and should not be interpreted as being more preferred or more advantageous than other embodiments or designs. The use of the words "further", "exemplarily" or "optionally" is intended to present related concepts in a specific way.

In related technologies, lossless adjustment technology usually includes adjustments at the link layer and the path layer. The adjustment process uses adjustment overhead at the corresponding layer, which usually leads to the following two problems:

Problem 1: When the related technology performs lossless adjustment, the path layer information needs to be reflected in the link layer, and the nodes of the link layer can only use the link layer to transmit the bandwidth adjustment information of the path layer. Therefore, it is necessary to open an overhead interval in the link layer to transmit the relevant overhead of the path layer, that is, the link layer container will carry part of the path layer related overhead, such as the path layer occupied time slot information and the path layer container number. When the number of path layer containers supported in a link layer container increases, that is, when there are multiple services, the link layer container needs to use more multi-frames to transmit the path layer container related overhead. The link layer overhead will increase linearly with the increase of service access, resulting in a longer transmission period. For example, the above problem will occur in the lossless adjustment process of small particles.

Question 2: From the perspective of usage scenarios, lossless adjustment is an end-to-end application, while the overhead of the link layer container is terminated segment by segment, and the overhead cannot be transparently transmitted. At this time, the management and control layer needs to cooperate to transmit the relevant bandwidth adjustment overhead. This multi-component cooperation increases the complexity of lossless bandwidth adjustment applications and the difficulty of development, resulting in low reliability of lossless bandwidth applications. For example, G.HAO needs to configure the target time slot/bandwidth for adjustment on a network element by network element basis, and the user-side board to the line board in the network element needs to communicate between boards to transmit information; among them, G.HAO refers to the lossless adjustment of ODUflex (GFP) (G.HAO) defined in the ITU-T G.7044 standard, which is a resizing mechanism that allows the data rate of the ODUflex (GFP) client to be adjusted on demand without affecting the integrity of the existing communication based on the end-to-end connection in the G.709OTN transmission network.

To solve the above problems, the embodiments of the present application provide a bandwidth adjustment method, a bandwidth adjustment method, a system, a medium and a product, which set the bandwidth adjustment overhead in the path layer container overhead area, and place the path layer overhead carried by the link layer in the path layer, thereby reducing the link layer overhead; and also set the bandwidth adjustment overhead in the path layer container and the mode setting for each node to terminate and regenerate the bandwidth adjustment overhead, so as to realize the transmission, termination and regeneration of the bandwidth adjustment overhead on the forwarding plane, complete the end-to-end interaction of lossless bandwidth adjustment, reduce the collaborative operation at the management and control level, reduce the complexity of bandwidth adjustment, reduce the development difficulty, and improve the reliability of lossless bandwidth adjustment application.

The embodiments of the present application are further described below in conjunction with the accompanying drawings.

FIG1 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in the figure, in the embodiment, exemplarily, the communication system includes a first device 110, a second device 120, and a third device 130. The first device 110 is connected to the second device 120 for communication, and the second device 120 is connected to the third device 130 for communication.

In one embodiment, the first device 110 is a source node, the second device 120 is an intermediate node, and the third device 130 is a sink node.

In one embodiment, the first device 110 and the third device 130 are communicatively connected, the first device 110 is a source node, and the third device 130 is a sink node.

It can be understood that when bandwidth adjustment is performed between two devices or nodes, the two devices or nodes are a source node and a sink node, respectively.

It is understandable that the number of devices and the communication relationship between devices in the communication system of this embodiment can be expanded and changed according to actual needs, and are not specifically limited here.

The technical solution of the embodiment of the present application can be applied to various communication technologies, such as microwave communication, optical wave communication, millimeter wave communication, etc. The embodiment of the present application does not limit the specific technology and specific device form used.

The first device 110, the second device 120, and the third device 130 of the embodiment of the present application are collectively referred to as communication devices for the convenience of description. The communication device can be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) device, an augmented reality (AR) device, a communication device in industrial control (Industrial Control), a communication device in self-driving, a communication device in remote medical surgery, a communication device in smart grid (Smart Grid), a communication device in transportation safety (Transportation Safety), a communication device in smart city (Smart City), a communication device in smart home (Smart Home), etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the device.

FIG2 is a flow chart of a bandwidth adjustment method provided in an embodiment of the present application. As shown in FIG2, the bandwidth adjustment method may be applied to, but not limited to, a communication system including at least two network elements, or a communication system as provided in the above embodiment. In the embodiment of FIG2, the bandwidth adjustment method may include, but is not limited to, steps S1100, S1200, and S1300.

Step S1100: define bandwidth adjustment overhead in the overhead area of the path layer container.

In one embodiment, the bandwidth adjustment overhead includes at least any one of the following: an adjustment command; a target bandwidth; and time slot configuration information.

In one embodiment, the adjustment command includes at least any one of the following: bandwidth increase; bandwidth decrease; rollback.

In one embodiment, the bandwidth adjustment overhead in the overhead area of the path layer container is mode-set according to the bandwidth adjustment message.

Step S1200: Setting a mode for the bandwidth adjustment overhead in the overhead area of the path layer container.

In one embodiment, the mode includes a first mode and a second mode.

In one embodiment, when the mode is the first mode, the bandwidth adjustment overhead of the path layer container is terminated and regenerated, and when the mode is the second mode, the bandwidth adjustment overhead of the path layer container is transparently transmitted.

In one embodiment, the termination process includes: setting the content in the bandwidth adjustment overhead area to zero.

In one embodiment, the regeneration process includes: generating bandwidth adjustment overhead content and inserting it into the bandwidth adjustment overhead area.

Step S1300: adjusting the bandwidth according to the bandwidth adjustment cost and mode.

It can be understood that the network element and the node in the specific embodiments of the present application refer to the same thing.

In one embodiment, the bandwidth adjustment method of the present application also includes: the management and control system configures the network element to the first mode; the management and control system sends a bandwidth adjustment message to the network element; the network element sets the bandwidth adjustment overhead according to the bandwidth adjustment message; the network element performs bandwidth adjustment according to the bandwidth adjustment overhead.

In another embodiment, the bandwidth adjustment method of the present application also includes: the management and control system sends a bandwidth adjustment message to the network element; the network element sets the bandwidth adjustment overhead and the bandwidth enabling overhead according to the bandwidth adjustment message, wherein the bandwidth enabling overhead is 4*(N-1), wherein N is the number of network element nodes; the network element configures the mode of the network element to the first mode according to the bandwidth enabling overhead; the network element performs bandwidth adjustment according to the bandwidth adjustment overhead.

In another embodiment, after the network element performs bandwidth adjustment, the network element prohibits overhead according to the bandwidth and configures the mode of the network element to the second mode.

In another embodiment, the bandwidth adjustment message includes at least any one of the following: an adjustment command; a target bandwidth; time slot configuration information; and the number of nodes N.

FIG3 is a flow chart of a bandwidth adjustment configuration method for applying the bandwidth adjustment method shown in FIG2 to a node to configure a node. As shown in FIG3, FIG3 is a flow chart of a bandwidth adjustment configuration method provided in an embodiment of the present application, and the bandwidth adjustment configuration method can be applied to, but not limited to, a communication device or node provided in the above embodiment. In the embodiment of FIG3, the bandwidth adjustment configuration method can include, but is not limited to, steps S110 and S120.

Step S110: setting bandwidth adjustment overhead in the overhead area of the path layer container of the node.

The bandwidth adjustment overhead includes at least one of the following: an adjustment command; a target bandwidth; time slot configuration information; and the number N of network element nodes.

In one embodiment, the bandwidth adjustment overhead includes an adjustment command, a target bandwidth, and time slot configuration information.

In one embodiment, the bandwidth adjustment overhead includes an adjustment command and a target bandwidth, or includes an adjustment command and time slot configuration information, or includes a target bandwidth and time slot configuration information.

In one embodiment, the adjustment command includes overhead associated with operations such as increasing bandwidth, decreasing bandwidth, and backing off.

Step S120: The node includes a first mode and a second mode, that is, the bandwidth adjustment overhead in the overhead area of the path layer container of the node is set to a mode, and the mode includes a first mode, such as a working mode, and a second mode, such as a transparent transmission mode.

In one embodiment, the first mode is configured to terminate and regenerate bandwidth adjustment overhead.

In one embodiment, the first mode is configured to extract, terminate, and regenerate bandwidth adjustment overhead.

In one embodiment, the second mode is configured to transparently process at least the bandwidth adjustment overhead.

The bandwidth adjustment process of the bandwidth adjustment method of the present application is further described below. FIG. 4 is a flow chart of a bandwidth adjustment method provided by another embodiment of the present application. As shown in FIG. 4 , the bandwidth adjustment method may be, but is not limited to, applied to a communication system including a source node 310 and a destination node 320, or a communication system as provided in the above embodiment; wherein the source node 310 includes a source node first end 311 and a source node second end 312, and the destination node 320 includes a destination node first end 321 and a destination node second end 322; it can be understood that the source node 310 and the destination node 320 are communication nodes configured according to the bandwidth configuration method of the present application. In the embodiment of FIG. 4 , the bandwidth adjustment method may include, but is not limited to, steps S210, S220, S230, S240, and S250.

Step S210: Setting the first mode. Setting each node to the first mode, wherein the first mode is configured to terminate and regenerate bandwidth adjustment overhead. That is, the management and control system configures each network element node to the first mode.

In one embodiment, step S210 also includes: receiving a bandwidth adjustment request message, wherein the bandwidth adjustment request message includes a bandwidth adjustment request and a number of nodes; the source network element receives the bandwidth adjustment request message, generates a bandwidth enabling overhead, and transmits it backward; each network element sets the working mode to the first mode according to the bandwidth enabling overhead.

In one embodiment, when the node includes an intermediate node, the first mode is further configured to extract, terminate and regenerate the bandwidth adjustment overhead.

In one embodiment, the termination process includes: setting the content in the bandwidth adjustment overhead area to zero. Specifically, the termination process includes setting the value of the bandwidth adjustment overhead in the bandwidth adjustment overhead area of the path layer container to 0. After the node extracts the bandwidth adjustment overhead from the path layer container, the bandwidth adjustment overhead of the path layer container of the node is terminated, that is, set to 0.

In one embodiment, the regeneration process includes: generating bandwidth adjustment overhead content and inserting it into the bandwidth adjustment overhead area. Specifically, the regeneration process includes generating new bandwidth adjustment overhead based on the extracted terminated bandwidth adjustment overhead and inserting it into the bandwidth adjustment overhead area of the path layer container. It can be understood that in a bandwidth adjustment, the bandwidth adjustment overhead for termination processing is the same as the content of the regenerated bandwidth adjustment overhead.

In another embodiment, the management and control system sends a bandwidth adjustment message to the source network element node, and the source network element node generates a bandwidth enabling overhead according to the number of network element nodes N in the bandwidth adjustment message, and transmits it backward, and each network element node is configured to the first mode according to the bandwidth enabling overhead. That is, step S210 includes: setting the bandwidth enabling overhead; setting the first mode according to the bandwidth enabling overhead. The first end of the source node (i.e., the source end of the path layer) receives the bandwidth adjustment request and the number of nodes, wherein the bandwidth adjustment request includes a bandwidth increase request message; the first end of the source node sets the path layer bandwidth enabling overhead; and determines that each node is in the first mode according to the bandwidth enabling overhead.

In one embodiment, illustratively, a communication system including a source node and a sink node is taken as an example.

a) Each node defaults to the second mode. The network management sends a bandwidth adjustment request and the number of nodes n (n=2) to the first end of the source node, that is, the source end of the path layer. Before the adjustment of the source end of the path layer begins, the bandwidth enabling overhead is first set to 4*(n-1)=4; the source end of the path layer sends the bandwidth enabling overhead to the destination end of the path layer, and the bandwidth enabling overhead is transmitted node by node.

b) In the forward link, after the second end of the source node (i.e., the source end of the link layer) and the first end of the destination node (i.e., the destination end of the link layer) receive the bandwidth enabling overhead, the mode of the bandwidth adjustment overhead of the local end is set to the first mode, and the bandwidth enabling overhead is reduced by 1.

c) After receiving the bandwidth enabling overhead, the second end of the sink node, that is, the sink end of the path layer, sends the overhead back to the source end of the path layer.

d) In the reverse link, after the second end of the source node and the first end of the destination node receive the bandwidth enabling overhead again, if the bandwidth adjustment overhead mode of the local end has been set to the first mode, the bandwidth enabling overhead is reduced by 1, otherwise the overhead continues to be transparently transmitted.

e) The first end of the source node receives the bandwidth enabling overhead. If the bandwidth enabling overhead is 0, it means that the intermediate ends have set the mode of bandwidth adjustment overhead to the first mode. At this time, the first end of the source node stops sending the bandwidth enabling overhead, and the system starts to execute the bandwidth adjustment related process from step S220 to step S250. If the bandwidth enabling overhead received by the first end of the source node is still not 0 within the preset time period, it stops sending the bandwidth enabling overhead and reports the adjustment failure.

In another embodiment, illustratively, a communication system including a source node, an intermediate node and a sink node is taken as an example.

a) Each node defaults to the second mode. The network management sends a bandwidth adjustment request and the number of nodes n (n=3) to the first end of the source node, that is, the source end of the path layer. Before the adjustment of the source end of the path layer begins, the bandwidth enabling overhead is first set to 4*(n-1)=8; the source end of the path layer sends the bandwidth enabling overhead to the destination end of the path layer, and the bandwidth enabling overhead is transmitted node by node.

b) In the forward link, after the second end of the source node (i.e., the source end of the link layer), the first end of the intermediate node, the second end of the intermediate node and the first end of the destination node (i.e., the destination end of the link layer) receive the bandwidth enabling overhead, they set the mode of the bandwidth adjustment overhead of their own end to the first mode and reduce the bandwidth enabling overhead by 1.

d) In the reverse link, after the second end of the source node, the first end of the intermediate node, the second end of the intermediate node and the first end of the destination node receive the bandwidth enabling overhead again, if the bandwidth adjustment overhead mode of the local end has been set to the first mode, the bandwidth enabling overhead is reduced by 1, otherwise the overhead continues to be transparently transmitted.

It is understandable that there may be multiple intermediate nodes. In the process of setting the first mode, the bandwidth enabling overhead passes through the first end and the second end of each intermediate node. The specific number of intermediate nodes is set according to actual needs and is not specifically limited here.

By setting the bandwidth enabling overhead, it is only necessary to set the bandwidth enabling overhead at the source node, and each end of the link triggers adjustment to the first mode according to the transmitted bandwidth enabling overhead, further reducing the control of the software at the management and control level and reducing the difficulty of development.

In another embodiment, step S210 includes: fixing each node to a first mode, wherein the first mode is configured to extract, terminate and regenerate bandwidth adjustment overhead; that is, the mode of bandwidth adjustment overhead at the first end and the second end of each node is fixed to the first mode.

By fixing the settings to the first mode, the control of the software at the management and control level is further reduced, reducing the difficulty of development.

Step S220: receiving bandwidth adjustment information. The source network element node receives bandwidth adjustment information sent by the management and control system.

Step S230: Setting bandwidth adjustment overhead: The source network element node sets bandwidth adjustment overhead according to the bandwidth adjustment information and transmits it to the sink network element node.

In one embodiment, the bandwidth adjustment overhead includes at least one of the following: an adjustment command, a target bandwidth, and time slot configuration information.

In one embodiment, the bandwidth adjustment overhead includes a bandwidth increase overhead, and the bandwidth increase overhead includes at least one of the following: a bandwidth increase command, a target bandwidth, and time slot configuration information.

In one embodiment, the bandwidth adjustment overhead includes a bandwidth reduction overhead, and the bandwidth reduction overhead includes at least one of the following: a bandwidth reduction command, a target bandwidth, and time slot configuration information.

Step S240: adjusting the bandwidth according to the bandwidth adjustment overhead. Each network element node performs a bandwidth adjustment operation according to the received bandwidth adjustment overhead.

In one embodiment, when the bandwidth adjustment overhead includes a bandwidth increase overhead, step S240 includes: performing bandwidth adjustment preprocessing according to the bandwidth increase overhead; setting a bandwidth confirmation overhead; and adjusting the bandwidth according to the bandwidth confirmation overhead.

In one embodiment, the bandwidth adjustment preprocessing includes: bandwidth resource verification. When adjusting the bandwidth increase, it is necessary to first confirm whether the bandwidth resources are sufficient to increase the bandwidth.

In one embodiment, the communication system includes a source node and a sink node. It can be understood that the source node and the sink node are communication nodes configured according to the bandwidth configuration method of the present application. The bandwidth adjustment process is described below by taking a bandwidth increase adjustment as an example.

The first end of the source node (the path layer source end) receives the bandwidth increase request message; the first end of the source node sets the bandwidth increase overhead in the path layer container overhead area according to the bandwidth increase request message.

The second end of the source node (the link layer source end) extracts the bandwidth increase overhead from the path layer container overhead area and performs termination processing on the bandwidth increase overhead.

The second end of the source node performs bandwidth adjustment preprocessing according to the extracted bandwidth increase overhead, and regenerates the bandwidth increase overhead in the path layer container overhead area; it can be understood that the regenerated bandwidth increase overhead is the same as the bandwidth increase overhead terminated after extraction.

The sink node first end (link layer sink end) receives the regeneration bandwidth increase overhead and stores the regeneration bandwidth increase overhead in the path layer container overhead area.

The second end of the sink node (path layer sink end) extracts the regenerated bandwidth increase overhead from the path layer container overhead area, increases the interface bandwidth, sets the bandwidth confirmation overhead and sends it back, wherein the bandwidth confirmation overhead is located in the path layer container overhead area.

The first end of the sink node performs bandwidth adjustment preprocessing according to the bandwidth confirmation overhead.

The source node second end receives the bandwidth confirmation overhead.

The second end of the source node extracts the bandwidth confirmation overhead, performs termination processing on the bandwidth confirmation overhead in the path layer container overhead area, increases the link bandwidth, and regenerates the bandwidth confirmation overhead in the path layer container overhead area.

The first end of the source node extracts the regenerated bandwidth confirmation overhead, increases the path layer container bandwidth, increases the interface bandwidth, and completes the bandwidth increase adjustment.

Specifically, the bandwidth confirmation overhead may include the same information as the bandwidth adjustment overhead in the same bandwidth adjustment.

Specifically, the interface bandwidth is the user-side interface bandwidth.

The node extracts and terminates the bandwidth increase overhead, performs bandwidth adjustment preprocessing to confirm that the bandwidth resources meet the adjustment requirements, and then regenerates the bandwidth increase overhead and continues to pass it on; this can avoid the problem that the current node cannot support bandwidth adjustment, but the bandwidth increase overhead has been passed to the next node, resulting in bandwidth adjustment failure of some nodes, and bandwidth adjustment failure of some nodes due to successful bandwidth adjustment and no timely feedback.

In another embodiment, the communication system includes a source node, at least one intermediate node and a destination node. FIG5 is a flow chart of a bandwidth adjustment method provided by another embodiment of the present application. As shown in FIG5, the communication system includes a source node 410, an intermediate node 420, and a destination node 430, wherein the source node 410 includes a source node first end 411 and a source node second end 412, the intermediate node 420 includes an intermediate node first end 421 and an intermediate node second end 422, and the destination node 430 includes a destination node first end 431 and a destination node second end 432. It can be understood that the source node 410, the intermediate node 420, and the destination node 430 are all communication nodes configured according to the bandwidth configuration method of the present application. The bandwidth adjustment process of three nodes is described below by taking a bandwidth increase adjustment as an example.

The first end of the intermediate node receives the regenerated bandwidth increase overhead and stores it in the path layer container overhead area.

The second end of the intermediate node extracts the bandwidth increase overhead from the path layer container overhead area and performs termination processing on the bandwidth increase overhead; it can be understood that the first end and the second end of the intermediate node are both link layer intermediate ends.

The second end of the intermediate node performs bandwidth adjustment preprocessing according to the extracted bandwidth increase overhead, and regenerates the bandwidth increase overhead in the path layer container overhead area.

The first end of the sink node performs bandwidth adjustment preprocessing according to the bandwidth confirmation overhead, and continues to send back the bandwidth confirmation overhead.

The second end of the intermediate node receives the bandwidth confirmation overhead and stores it in the path layer container overhead area.

The second end of the intermediate node extracts the bandwidth confirmation overhead, performs termination processing on the bandwidth confirmation overhead in the path layer container overhead area, increases the link bandwidth, and regenerates the bandwidth confirmation overhead in the path layer container overhead area;

The first end of the intermediate node performs bandwidth adjustment preprocessing according to the bandwidth confirmation overhead, and continues to send back the bandwidth confirmation overhead.

The source node second end receives the bandwidth confirmation overhead.

The source node first end extracts the regenerated bandwidth confirmation overhead, increases the path layer container bandwidth, and increases the interface bandwidth.

It can be understood that, in a bandwidth adjustment process, the bandwidth increase overhead is the same as the regeneration bandwidth increase overhead.

It is understandable that when the communication system includes an intermediate node, the bandwidth increase overhead is transmitted from the source node to the intermediate node, and then from the intermediate node to the destination node, wherein the bandwidth increase overhead is extracted, terminated and regenerated in each node and then transmitted to the next node; the destination node sends back the bandwidth confirmation overhead to the intermediate node, and then transmits it from the intermediate node to the source node, wherein the bandwidth adjustment confirmation starts to be extracted, terminated and regenerated in each node and then transmitted to the next node, and the corresponding bandwidth adjustment operation is performed. The communication system in the embodiment of the present application may include but is not limited to the source node, at least one intermediate node, and the destination node. The intermediate node can be increased or decreased according to the actual application, and is not specifically limited in the present application.

In one embodiment, after the first end of the source node extracts the regenerated bandwidth confirmation overhead, it increases the path layer container bandwidth and the user side interface bandwidth according to the bandwidth confirmation overhead; when the first end of the source node fails to adjust the bandwidth, it reports the failure to the network management; after the first end of the source node successfully adjusts the bandwidth, it reports a bandwidth increase adjustment success message to the network management, and the first end of the source node stops sending the bandwidth increase overhead.

In one embodiment, after the second end of the sink node fails to detect the bandwidth increase overhead, the second end of the sink node stops sending the bandwidth confirmation overhead.

In one embodiment, after the bandwidth increase adjustment is completed, each node actively reports the path bandwidth and link resource changes to the network manager. After the network manager receives the bandwidth increase adjustment success message reported by the source node, the path layer container bandwidth adjustment overhead of all nodes is switched to the second mode.

In one embodiment, when the bandwidth adjustment overhead includes bandwidth reduction overhead, step S240 includes: adjusting the bandwidth according to the bandwidth reduction overhead. Further, after adjusting the bandwidth according to the bandwidth reduction overhead, setting the bandwidth confirmation overhead.

In one embodiment, the communication system includes a source node and a sink node. It can be understood that the source node and the sink node are communication nodes configured according to the bandwidth configuration method of the present application. The bandwidth adjustment process is described below by taking a bandwidth reduction adjustment as an example.

The first end of the source node (path layer source end) receives the bandwidth reduction request message.

The first end of the source node reduces the interface bandwidth and the path layer container bandwidth according to the request message, and sets the bandwidth in the path layer container overhead area to reduce the overhead.

The second end of the source node (the link layer source end) extracts the bandwidth reduction overhead from the path layer container overhead area, and performs termination processing on the bandwidth reduction overhead in the path layer container overhead area.

The second end of the source node reduces the link bandwidth according to the extracted bandwidth reduction overhead, and regenerates the bandwidth reduction overhead in the path layer container overhead area.

The first end of the sink node (link layer sink end) receives the regenerated bandwidth reduction overhead and stores it in the path layer container overhead area.

The second end of the sink node (path layer sink end) extracts the regenerated bandwidth reduction overhead from the path layer container overhead area, reduces the interface bandwidth, sets the bandwidth confirmation overhead and sends it back, wherein the bandwidth confirmation overhead is located in the path layer container overhead area.

The sink node first receives the bandwidth confirmation overhead.

The source node second end receives the bandwidth confirmation overhead.

The source node first receives the bandwidth confirmation overhead.

The interface bandwidth is the user-side interface bandwidth.

In another embodiment, the communication system includes a source node, at least one intermediate node and a destination node. It can be understood that the intermediate node is a communication node configured according to the bandwidth configuration method of the present application. The bandwidth adjustment process of three nodes is described below by taking a bandwidth reduction adjustment as an example.

The intermediate node first end receives the bandwidth reduction overhead of the path layer and continues to send the overhead downstream.

The second end of the intermediate node extracts bandwidth reduction overhead from the path layer container overhead area, and terminates the bandwidth adjustment overhead of the path layer container overhead area; it can be understood that the first end and the second end of the intermediate node are both link layer intermediate ends.

The intermediate node second end reduces the link bandwidth according to the extracted bandwidth reduction overhead, and regenerates the bandwidth reduction overhead in the path layer container overhead area.

The sink node first receives the bandwidth confirmation overhead.

The intermediate node second end receives the bandwidth confirmation overhead.

The intermediate node first receives the bandwidth confirmation overhead.

The source node second end receives the bandwidth confirmation overhead.

The source node first receives the bandwidth confirmation overhead.

The interface bandwidth is the user-side interface bandwidth.

It can be understood that in a bandwidth adjustment process, the bandwidth reduction overhead is the same as the regeneration bandwidth reduction overhead.

It is understandable that when the communication system includes an intermediate node, the bandwidth reduction overhead is transmitted from the source node to the intermediate node, and then from the intermediate node to the destination node, wherein the bandwidth reduction overhead is extracted, terminated and regenerated in each node and then transmitted to the next node; the destination node sends back the bandwidth confirmation overhead to the intermediate node, and then from the intermediate node to the source node. The communication system in the embodiment of the present application may include but is not limited to a source node, at least one intermediate node, and a destination node. The intermediate nodes can be increased or decreased according to actual applications, and are not specifically limited in the present application.

In one embodiment, after extracting the bandwidth confirmation overhead from the bandwidth adjustment overhead area, the source node first end confirms that the bandwidth reduction adjustment is successful, stops sending the bandwidth reduction overhead, and reports a bandwidth reduction adjustment success message to the network management.

In one embodiment, when the second end of the source node fails to adjust the link bandwidth, the failure is reported to the network management.

In one embodiment, when the second end of the sink node fails to reduce the interface bandwidth, the second end reports the failure to the network management.

In one embodiment, after the second end of the sink node detects that the bandwidth reduction overhead cannot be sent, the second end of the sink node stops sending the bandwidth confirmation overhead.

In one embodiment, after the bandwidth reduction adjustment is completed, each node actively reports the path bandwidth and link resource changes to the network management. After receiving the bandwidth reduction adjustment success message reported by the source node, the network management switches the path layer container bandwidth adjustment overhead of all nodes to the second mode.

By setting the bandwidth adjustment overhead in the path layer container overhead area, the link layer overhead occupancy is reduced and link layer resources are saved; through the setting of the first mode, the transmission, termination and regeneration of the bandwidth adjustment overhead are realized, the collaborative operations at the management and control level are reduced, and the complexity of bandwidth adjustment is reduced.

Step S250: Setting the second mode.

In one embodiment, the second mode is configured to transparently transmit at least the bandwidth adjustment overhead.

In one embodiment, after the bandwidth adjustment is completed, the path layer container bandwidth adjustment overhead of the source node and the sink node switches to the second mode, wherein the second mode is configured to transparently transmit the bandwidth adjustment overhead. Further, when the communication system includes an intermediate node, after the bandwidth adjustment is completed, the path layer container bandwidth adjustment overhead of the intermediate node also switches to the second mode.

In one embodiment, the network element node adjusts the overhead according to the bandwidth, and after performing the bandwidth adjustment, the management and control system configures each network element node to the second mode.

In one embodiment, step S250 includes: after the network element node adjusts the overhead according to the bandwidth and performs bandwidth adjustment, the network element node sets the bandwidth prohibition overhead and transmits it backward; each network element node is set to the second mode according to the bandwidth prohibition overhead.

a) After the bandwidth is adjusted, the first end of the source node (the source end of the path layer) sets the bandwidth prohibition overhead to 2*(n-1) and transmits it downstream; where n is the number of nodes, and in this embodiment n=2.

b) In the forward link, after the second end of the source node (the source end of the link layer) and the first end of the destination node (the destination end of the link layer) receive the bandwidth prohibition overhead, they set the mode of the bandwidth adjustment overhead of their own end to the second mode, and reduce the bandwidth prohibition overhead by 1, and continue to pass the overhead downstream.

c) After receiving the bandwidth prohibition overhead, the second end of the sink node (the sink end of the path layer) returns the overhead to the source end of the path layer.

d) In the reverse link, the second end of the source node and the first end of the destination node do not perform any processing and continue to send back the overhead.

e) If the bandwidth prohibition overhead received by the first end of the source node is 0, it means that each node has adjusted the bandwidth adjustment overhead mode to the second mode and stopped sending bandwidth prohibition overhead; if the bandwidth prohibition overhead received by the first end of the source node is 0 within the preset time period, it means that each node has adjusted the bandwidth adjustment overhead mode to the second mode and stopped sending bandwidth prohibition overhead. If the stop overhead is not 0, the bandwidth prohibition overhead is stopped from being sent and the adjustment failure is reported.

a) After the bandwidth is adjusted, the first end of the source node (the source end of the path layer) sets the bandwidth prohibition overhead to 2*(n-1) and transmits it downstream; where n is the number of nodes, and in this embodiment n=3.

b) In the forward link, after the second end of the source node (the source end of the link layer), the first end of the intermediate node (the middle end of the link layer), the second end of the intermediate node (the middle end of the link layer) and the first end of the destination node (the destination end of the link layer) receive the bandwidth prohibition overhead, they set the bandwidth adjustment overhead mode of their own end to the second mode, reduce the bandwidth prohibition overhead by 1, and continue to pass the overhead downstream.

d) In the reverse link, after receiving the bandwidth prohibition overhead again, the second end of the source node, the first end of the intermediate node, the second end of the intermediate node and the first end of the destination node do not perform any processing and continue to send back the overhead.

e) The first end of the source node receives the bandwidth prohibition overhead. If the bandwidth prohibition overhead is 0, it means that the intermediate ends have set the mode of the bandwidth adjustment overhead to the second mode. At this time, the first end of the source node stops sending the bandwidth prohibition overhead. If the bandwidth prohibition overhead received by the first end of the source node is still not 0 within the preset time period, it stops sending the bandwidth prohibition overhead and reports the adjustment failure.

It is understandable that, in the process of configuring each network element node to the second mode according to the bandwidth prohibition overhead, the bandwidth prohibition overhead only needs to be transmitted unidirectionally once to ensure that each network element node can receive the bandwidth prohibition overhead once, without the need for backhaul confirmation.

It is understandable that there may be multiple intermediate nodes, and in the process of setting the second mode, the bandwidth prohibition overhead passes through the first end and the second end of each intermediate node; the specific number of intermediate nodes is set according to actual needs and is not specifically limited here.

By setting the bandwidth prohibition overhead, it is only necessary to set the bandwidth prohibition overhead at the source node, and each end of the link is adjusted to the second mode according to the transmitted bandwidth prohibition overhead trigger, further reducing the control of the management and control layer software and reducing the difficulty of development.

In one embodiment, after receiving the bandwidth adjustment instruction, the source network element generates a bandwidth enabling overhead according to the adjustment request and the number of nodes, wherein the bandwidth enabling overhead is 4*(N-1), wherein N is the number of network element nodes. The source network element transmits the bandwidth enabling overhead to the sink network element, and the sink network element transmits it back to the source network element after receiving the bandwidth enabling overhead, and each network element node is configured to the first mode according to the bandwidth enabling overhead. Each network element in the first mode performs a bandwidth adjustment process, and after completing the bandwidth adjustment, the source network element generates a bandwidth prohibition overhead, wherein the bandwidth prohibition overhead is set to 2*(n-1), and n is the number of nodes. The source network element transmits the bandwidth prohibition overhead to the sink network element, and each intermediate network element and the sink network element configure themselves to the second mode after receiving the bandwidth prohibition overhead, and the sink network element does not transmit the overhead back after receiving the bandwidth prohibition overhead. It can be understood that the specific processes corresponding to the bandwidth enabling overhead and the bandwidth prohibition overhead refer to the above examples or embodiments, and will not be repeated here.

In order to further illustrate the bandwidth adjustment method provided in the embodiment of the present application, the following example is used for detailed description.

Example 1:

Fig. 6 is a flow chart of bandwidth increase adjustment provided by the example of the present application. As shown in Fig. 6, the communication system in this example includes a source node 510, an intermediate node 520, and a sink node 530.

One-way bandwidth lossless increase adjustment process:

1) After the user starts the lossless bandwidth increase command, the network management configures the path layer container lossless bandwidth adjustment overhead of the intermediate link to be adjusted from the second mode to the first mode.

2) The network management sends a bandwidth increase adjustment request message to the source node 510. The path layer source end, namely the A0 end of the source node 510, sets the path layer container bandwidth increase adjustment overhead according to the bandwidth increase adjustment request message and sends it downstream.

3) The source end of the forward link, i.e., the A1 end of the source node 510 and the B2 end of the intermediate node 520, extracts the bandwidth increase adjustment overhead from the bandwidth adjustment overhead area of the path layer container, and performs termination processing on the bandwidth increase adjustment overhead of the path layer container, i.e., sets the value of the bandwidth increase adjustment overhead of the path layer container to 0. When the bandwidth increase adjustment overhead extracted by the source end of the forward link is 0, no bandwidth adjustment related processing is performed; when the bandwidth increase adjustment overhead extracted by the source end of the forward link is non-0, preparations such as bandwidth resource verification are performed according to the information carried by the bandwidth increase adjustment overhead. If the resources are insufficient, the adjustment failure is reported. After the source end of the forward link completes the bandwidth adjustment preparation work, the bandwidth increase adjustment overhead of the path layer container is regenerated, and the bandwidth increase adjustment overhead is continuously transmitted to the downstream. The destination end of the forward link, i.e., the B1 end of the intermediate node 520 and the C1 end of the destination node 530, after receiving the bandwidth increase adjustment overhead, continues to send the overhead to the downstream without performing bandwidth adjustment related processing. It can be understood that the order of transmitting the overhead of the forward link is, in turn, the A1 end of the source node 510 , the B1 end of the intermediate node 520 , the B2 end of the intermediate node 520 , and the C1 end of the destination node 530 .

4) The destination end of the path layer, i.e., the C0 end of the destination node 530, extracts the bandwidth increase adjustment overhead from the bandwidth adjustment overhead area of the path layer container, first adjusts the client-side interface bandwidth, and after success, sets the bandwidth increase confirmation adjustment overhead in the path layer container and sends it back to the source node; if the adjustment fails, the failure is reported to the network management.

5) After receiving the bandwidth increase confirmation adjustment overhead, the source end of the reverse link, i.e., the C1 end of the destination node 530 and the B1 end of the intermediate node 520, prepares for the bandwidth increase and continues to send the overhead back upstream. If the bandwidth increase preparation fails, such as insufficient bandwidth resources, the bandwidth increase confirmation adjustment overhead is terminated and the overhead is set to 0.

The destination end of the reverse link, i.e., the B2 end of the intermediate node 520 and the A1 end of the source node 510, extracts the bandwidth increase confirmation adjustment overhead from the bandwidth adjustment overhead area of the path layer container, and performs termination processing on the bandwidth increase confirmation adjustment overhead of the path layer container, i.e., sets the value of the bandwidth increase confirmation adjustment overhead of the path layer container to 0. Then, the bandwidth increase processing of the forward link is performed. If successful, the bandwidth increase confirmation adjustment overhead is regenerated in the overhead area of the corresponding path layer container and continues to be sent toward the source end; if the adjustment fails, the failure is reported to the network management. It can be understood that the order of transmission of the reverse link overhead is, in turn, the C1 end of the destination node 530, the B2 end of the intermediate node 520, the B1 end of the intermediate node 520, and the A1 end of the source node 510.

6) The source end of the path layer extracts the bandwidth increase confirmation adjustment overhead from the bandwidth adjustment overhead area of the path layer container, first adjusts the bandwidth of the path layer container, and then adjusts the client-side interface bandwidth; if the adjustment fails, the failure is reported to the network management; after the adjustment is successful, a bandwidth increase adjustment success message is reported to the network management, and the bandwidth increase adjustment overhead is stopped from being sent to the destination end of the path layer.

7) After the destination end of the path layer cannot detect the adjustment overhead of the bandwidth increase, it stops sending the bandwidth increase confirmation adjustment overhead.

8) After the adjustment is completed, each node actively reports the changes in path bandwidth and link resources to the network management. After receiving the bandwidth increase adjustment success message reported by the source node, the network management adjusts the path layer container lossless bandwidth adjustment overhead of all nodes from the first mode to the second mode.

Example 2:

Fig. 7 is a flow chart of bandwidth reduction adjustment provided by the example of the present application. As shown in Fig. 7, the communication system in this example includes a source node 610, an intermediate node 620, and a sink node 630.

One-way bandwidth lossless reduction adjustment process:

1) After the user starts the lossless bandwidth reduction command, the network management configures the path layer container lossless bandwidth adjustment overhead of the intermediate link to be adjusted from the second mode to the first mode.

2) The network management sends a bandwidth reduction adjustment request message to the source node 610. The path layer source end, that is, the A0 end of the source node 610, adjusts the client side interface bandwidth to the target bandwidth. After completing the client interface bandwidth reduction, the path layer container is adjusted to the target bandwidth. After completion, the bandwidth reduction adjustment overhead is set in the path layer container according to the bandwidth reduction request message and sent downstream.

3) The source end of the forward link, i.e., the A1 end of the source node 610 and the B2 end of the intermediate node 620, extracts the bandwidth reduction adjustment overhead from the bandwidth adjustment overhead area of the path layer container, and performs termination processing on the bandwidth reduction adjustment overhead of the path layer container, i.e., sets the value of the bandwidth reduction adjustment overhead of the path layer container to 0. When the bandwidth reduction adjustment overhead extracted by the source end of the forward link is 0, no bandwidth adjustment related processing is performed; when the bandwidth adjustment overhead extracted by the source end of the forward link is non-zero, the forward link bandwidth is reduced to the target bandwidth according to the information carried by the bandwidth reduction adjustment overhead. If the adjustment fails, the failure is reported to the network management; when the source end of the forward link completes the link bandwidth reduction work, the bandwidth reduction adjustment overhead of the path layer container is regenerated and continues to be sent to the downstream node. The destination end of the forward link, i.e., the B1 end of the intermediate node 620 and the C1 end of the destination node 630, continues to send the overhead downstream after receiving the bandwidth reduction adjustment overhead. It can be understood that the order of transmitting the overhead of the forward link is, in turn, the A1 end of the source node 610 , the B1 end of the intermediate node 620 , the B2 end of the intermediate node 620 , and the C1 end of the destination node 630 .

4) The destination end of the path layer, i.e., the C0 end of the destination node 630, extracts the bandwidth reduction adjustment overhead from the bandwidth adjustment overhead area of the path layer container, adjusts the client-side interface bandwidth, and upon success, sends back the bandwidth reduction confirmation adjustment overhead of the path layer container to the source end of the path layer; if the adjustment fails, the network management reports the failure.

5) After receiving the bandwidth reduction confirmation and adjusting the overhead, each end of the reverse link continues to send the overhead back upstream. It can be understood that the order of overhead transmission of the reverse link is, C1 end of the sink node 630, B2 end of the intermediate node 620, B1 end of the intermediate node 620, and A1 end of the source node 610.

6) After the source end of the path layer extracts the bandwidth reduction confirmation adjustment overhead from the bandwidth adjustment overhead area, it stops sending the bandwidth reduction adjustment overhead and reports a bandwidth reduction adjustment success message to the network management.

7) After the sink end of the path layer cannot detect the adjustment overhead of bandwidth reduction, it stops sending the adjustment overhead of bandwidth reduction confirmation.

8) After the adjustment is completed, each node actively reports the changes in path bandwidth and link resources to the network management. After the network management receives the bandwidth reduction adjustment success message reported by the source end of the path layer, it adjusts the path layer container lossless bandwidth adjustment overhead of all nodes from the first mode to the second mode.

It can be understood that the A0 end of the source node in Example 1 and Example 2 is the first end of the source node, the A1 end of the source node is the second end of the source node, the B1 end of the intermediate node is the first end of the intermediate node, the B2 end of the intermediate node is the second end of the intermediate node, the C1 end of the destination node is the first end of the destination node, and the C2 end of the destination node is the second end of the destination node.

Example 3:

FIG8 is a flowchart of processing bandwidth adjustment overhead in a path layer container provided by an example of this application.

During bandwidth adjustment, the processing flow of bandwidth adjustment overhead in the path layer container is as follows:

Sets bandwidth adjustment overhead in the path layer container.

Extract bandwidth adjustment overhead from path layer container.

According to the mode adjustment information, the bandwidth adjustment overhead of the path layer container is adjusted in mode.

If the bandwidth adjustment overhead of the path layer container is in the second mode, the bandwidth adjustment overhead is directly transparently transmitted.

If the bandwidth adjustment overhead of the path layer container is in the first mode, the bandwidth adjustment overhead of the path layer container is terminated.

After the bandwidth adjustment overhead of the path layer container is terminated, bandwidth resource verification is performed according to the bandwidth adjustment related information carried by the extracted bandwidth adjustment overhead.

If the bandwidth resource meets the bandwidth adjustment requirement, the bandwidth adjustment overhead is regenerated in the path layer container according to the extracted bandwidth adjustment overhead.

If the bandwidth resource does not meet the bandwidth adjustment requirement, it indicates that the bandwidth adjustment has failed. At this time, the corresponding node reports the bandwidth adjustment failure to the network management.

The bandwidth adjustment method of the present application defines a lossless bandwidth adjustment overhead in the overhead area of the path layer container, and sets the mode of the bandwidth adjustment overhead of the path layer container. In the case of the first mode, the bandwidth adjustment overhead of the path layer container is terminated and regenerated, and in the case of the second mode, the bandwidth adjustment overhead of the path layer container is transparently transmitted. By default, the bandwidth adjustment overhead of the path layer container is in the second mode. When a bandwidth adjustment request is received, the bandwidth adjustment overhead of the path layer container is adjusted from the second mode to the first mode. When the bandwidth adjustment is successful, the bandwidth adjustment overhead of the path layer container is adjusted from the first mode to the second mode. By defining the bandwidth adjustment overhead and setting the mode of the bandwidth adjustment overhead in the path layer container overhead, it is possible to achieve transparent transmission, termination/regeneration of lossless bandwidth adjustment overhead on the forwarding plane, thereby completing the end-to-end interaction of the bandwidth adjustment protocol, reducing the operation of management and control coordination, and solving the problem of long transmission cycle of bandwidth adjustment overhead carried by link layer containers.

FIG9 is a schematic diagram of the structure of a communication system provided by an embodiment of the present application. As shown in FIG9, the communication system 2000 includes a memory 2100 and a processor 2200. The number of memories 2100 and processors 2200 can be one or more, and FIG9 takes one memory 2101 and one processor 2201 as an example; the memory 2101 and the processor 2201 in the network device can be connected via a bus or other means, and FIG9 takes the connection via a bus as an example.

The memory 2101 is a computer-readable storage medium that can be used to store software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method provided in any embodiment of the present application. The processor 2201 implements the method provided in any of the above embodiments by running the software programs, instructions, and modules stored in the memory 2101.

The memory 2101 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function. In addition, the memory 2101 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device or other non-volatile solid-state storage device. In some instances, the memory 2101 further includes a memory remotely arranged relative to the processor 2201, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

An embodiment of the present application further provides a communication device, which includes a memory and a processor. The number of the memory and the processor can be one or more, taking one memory and one processor as an example; the memory and the processor in the network device can be connected through a bus or other means, taking the connection through a bus as an example.

The memory is a computer-readable storage medium that can be used to store software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method provided in any embodiment of the present application. The processor runs the program instructions stored in the memory. The software program, instructions and modules implement the method provided in any of the above embodiments.

The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device or other non-volatile solid-state storage device. In some instances, the memory further includes a memory remotely arranged relative to the processor, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

An embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the bandwidth adjustment method or bandwidth adjustment method provided in any embodiment of the present application.

An embodiment of the present application also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the bandwidth adjustment method or bandwidth adjustment method provided in any embodiment of the present application.

The system architecture and application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules/units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

In hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components may reside in a process or an execution thread, and a component may be located on a computer or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may communicate, for example, through a local or remote process based on a signal having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems through signals).

The above describes some embodiments of the present application with reference to the accompanying drawings, but does not limit the scope of the present application. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present application shall be within the scope of the present application.

Claims

A bandwidth adjustment method, applied to a communication system, comprising:

The bandwidth adjustment overhead is defined in the overhead area of the path layer container;

Setting a mode for bandwidth adjustment overhead in an overhead area of the path layer container;

Bandwidth adjustment is performed based on bandwidth adjustment cost and mode.
The method according to claim 1, wherein:

The modes include a first mode and a second mode.
The method according to claim 2, wherein:

When the mode is the first mode, the bandwidth adjustment overhead of the path layer container is terminated and regenerated. When the mode is the second mode, the bandwidth adjustment overhead of the path layer container is transparently transmitted.
The method according to claim 3, wherein the termination process comprises:

The content in the bandwidth adjustment overhead area is set to zero.
The method according to claim 3, wherein the regeneration process comprises:

Generate bandwidth adjustment overhead content and insert it into the bandwidth adjustment overhead area.
The method according to claim 1, wherein the communication system comprises at least two network elements, and the method further comprises:

The management and control system configures the network element to a first mode;

The management and control system sends a bandwidth adjustment message to the network element;

The network element sets bandwidth adjustment overhead according to the bandwidth adjustment message;

The network element performs bandwidth adjustment according to the bandwidth adjustment overhead.
The method according to claim 1, wherein the communication system comprises at least two network elements, and the method further comprises:

The management and control system sends a bandwidth adjustment message to the network element;

The network element sets a bandwidth adjustment overhead and a bandwidth enabling overhead according to the bandwidth adjustment message, wherein the bandwidth enabling overhead is 4*(N-1), wherein N is the number of network element nodes;

The network element configures a mode of the network element as a first mode according to the bandwidth enabling overhead;

The network element performs bandwidth adjustment according to the bandwidth adjustment overhead.
The method according to claim 6, wherein, after the network element performs bandwidth adjustment according to the bandwidth adjustment overhead, the method further comprises: the management and control system configuring the network element to a second mode.
According to the method of claim 7, after the network element adjusts the overhead according to the bandwidth and performs bandwidth adjustment, the method further comprises: the network element configures the mode of the network element to the second mode according to prohibiting the overhead.
The method according to claim 6 or 7, wherein the bandwidth adjustment message includes at least any one of the following: an adjustment command; a target bandwidth; time slot configuration information; and a number N of network element nodes.
A communication system, comprising:

at least one processor;

At least one memory, used to store at least one program; wherein,

When at least one of the programs is executed by at least one of the processors, the bandwidth adjustment method according to any one of claims 1 to 10 is implemented.
A computer-readable storage medium stores computer-executable instructions, wherein the computer-executable instructions are used to execute the bandwidth adjustment method according to any one of claims 1 to 10.
A computer program product, comprising a computer program or a computer instruction, wherein the computer program or the computer instruction is stored in a computer-readable storage medium, a processor of a computer device reads the computer program or the computer instruction from the computer-readable storage medium, and the processor executes the computer program or the computer instruction, so that the computer device executes the bandwidth adjustment method according to any one of claims 1 to 10.