CN117439891A - Resource scheduling method and device and optical transport network OTN equipment - Google Patents
Resource scheduling method and device and optical transport network OTN equipment Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims description 10
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- 238000013507 mapping Methods 0.000 claims description 5
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
Abstract
The invention provides a resource scheduling method and device and Optical Transport Network (OTN) equipment, and relates to the technical field of communication. The method comprises the following steps: receiving a service request; determining target connection from the pre-established connection according to the service request, and adjusting the target connection from an initial bandwidth to a connection bandwidth of a service requirement; and when the service is finished, the target connection is adjusted to the initial bandwidth. The scheme of the invention can solve the problem that the current OTN can not realize dynamic scheduling based on service requirements and affects service response speed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for scheduling resources, and an OTN device of an optical transport network.
Background
Currently, optical transport networks (optical transport network, OTNs) typically carry backbone connections or end-to-end dedicated lines, OTN resources are typically pre-planned, and no dynamic scheduling is typically performed after connection establishment.
With the promotion of service diversity, the resource utilization rate of the traditional transmission network resource scheduling mechanism is lower for the service with stronger future dynamic property and larger quantity. In addition, under the traditional transport network scheduling mechanism, the end-to-end connection opening time is usually in the order of minutes, so that the dynamic scheduling based on the service requirements cannot be realized, and the service response speed is influenced.
Disclosure of Invention
The invention aims to provide a resource scheduling method and device and Optical Transport Network (OTN) equipment, which can solve the problem that the current OTN can not realize dynamic scheduling based on service requirements and influence service response speed.
To achieve the above object, an embodiment of the present invention provides a resource scheduling method, including:
receiving a service request;
determining target connection from the pre-established connection according to the service request, and adjusting the target connection from an initial bandwidth to a connection bandwidth of a service requirement;
and when the service is finished, the target connection is adjusted to the initial bandwidth.
Optionally, before determining the target connection from the pre-established connections, the method further includes:
establishing a trunk connection between trunk network edge nodes;
configuring a point-to-point connection between a customer premise equipment CPE and a metro edge node; wherein the metro edge nodes are not configured for cross-connection.
Optionally, the trunk connection and/or the point-to-point connection employs an initial bandwidth.
Optionally, the initial bandwidth is a minimum bandwidth of the employed connection technology.
Optionally, the resource scheduling method further includes:
updating a trunk connection state table according to the connection state of the trunk connection; wherein the trunk connection status table comprises: connection identity, source node identity, destination node identity and connection status.
Optionally, the service request carries an active port, a destination port, and a connection bandwidth of a service requirement.
Optionally, the determining the target connection from the pre-established connection according to the service request, and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement, includes:
from the pre-established connection, determining a target connection in an idle state according to the source port and the target port;
and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement according to the connection bandwidth of the service requirement.
Optionally, the determining the target connection in the idle state according to the source port and the destination port includes:
determining trunk connection in an idle state according to the source port and the destination port;
and configuring cross connection of the metropolitan area edge node and mapping of service and connection according to the trunk connection to form the target connection.
Optionally, the resource scheduling method further includes:
and updating the target connection to be in an occupied state.
Optionally, the resource scheduling method further includes:
and updating the target connection to an idle state when the service is finished.
To achieve the above object, an embodiment of the present invention provides a resource scheduling apparatus, including:
the receiving module is used for receiving the service request;
the first processing module is used for determining target connection from the pre-established connection according to the service request and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement;
and the second processing module is used for adjusting the target connection to the initial bandwidth when the service is finished.
To achieve the above object, an embodiment of the present invention provides an OTN device of an optical transport network, including: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the processor, when executing the program or instructions, implements the steps in the resource scheduling method as described above.
To achieve the above object, an embodiment of the present invention provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps in the resource scheduling method as described above.
The technical scheme of the invention has the following beneficial effects:
the embodiment of the invention configures the cross and adjusts the connection bandwidth to the bandwidth required by the service request when the service request arrives based on the connection established in advance and the connection bandwidth is the initial bandwidth, and adjusts the bandwidth back to the initial bandwidth when the service is finished, so that the response rate of the service can be improved and the service quality of the service can be improved by adopting the mode of adjusting the bandwidth according to the service as required.
Drawings
FIG. 1 is a schematic diagram of a transport network architecture according to an embodiment of the present invention;
FIG. 2 is a flowchart of a resource calling method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating connection of a transport network architecture according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pre-established connection according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of connection at the time of service opening according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a connection at the end of a service according to an embodiment of the present invention;
FIG. 7 is a block diagram of a resource calling device according to an embodiment of the present invention;
fig. 8 is a block diagram of an optical transport network OTN device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
The following is presented with respect to the architecture of the transport network:
as shown in fig. 1, the transport network consists of a metropolitan area, a backbone network and customer-side equipment (Customer Premise Equipment, CPE) on the access side.
The CPE interfaces with a Customer equipment (e.g., customer Edge (CE)) to map the Customer-side signal into an OTN encapsulation format and to the metro Edge.
The metropolitan area, backbone network is a wireless Mesh network (Mesh).
The connection between the user equipments is dynamically generated and terminated.
The client side device is a mobile signal access device which receives a mobile signal and forwards the mobile signal by a wireless network communication technology (WIFI) signal, and is a device which converts a high-speed 4G or 5G signal into a WIFI signal, and the number of mobile terminals which can support simultaneous internet surfing is also large.
Mesh networks are "multi-hop" networks, developed from ad hoc networks, and are one of the key technologies to solve the "last kilometer" problem. In the evolution towards the next generation network, wireless is an indispensable technology. The wireless Mesh can cooperatively communicate with other networks, is a dynamic network architecture which can be continuously expanded, and any two devices can keep wireless interconnection.
As shown in fig. 2, a resource scheduling method in an embodiment of the present invention specifically includes the following steps:
step 21: a service request is received.
Optionally, the service request carries an active port (i.e., an a port), a destination port (i.e., a Z port), and a connection bandwidth of a service requirement.
Step 22: and determining a target connection from the pre-established connection according to the service request, and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement.
Alternatively, taking an optical transport network as an example, a plurality of end-to-end connections may be pre-established, as shown in fig. 3, where the end-to-end connections include: pre-established trunk connection B (i.e., connection between trunk network edge nodes) and pre-configured point-to-point connection a (i.e., connection between CPE and metro edge nodes).
Specifically, when the service arrives (i.e. a service request is received), a connection (i.e. a target connection) meeting the service request may be selected according to a plurality of connections established in advance, and the corresponding connection bandwidth may be adjusted to the connection bandwidth required by the service request.
Alternatively, the initial bandwidth of the pre-established connection may be the minimum bandwidth of the connection technology used, such as under an optical transport network, the initial bandwidth may be the minimum bandwidth supported by the optical transport network, such as the minimum bandwidth of an optical service unit (Optical Service Unit, OSU), such as the minimum bandwidth of an OSU of 2Mbps.
Step 23: and when the service is finished, the target connection is adjusted to the initial bandwidth.
For example: when the traffic leaves (i.e. when the traffic ends), the connection bandwidth of the target connection is readjusted back to the initial bandwidth, and if the initial bandwidth is set to the minimum bandwidth of the OSU, the connection bandwidth to the target connection is readjusted to the minimum bandwidth of the OSU when the traffic leaves.
In the scheme, the connection bandwidth is the initial bandwidth through the pre-established connection, the cross is configured and the connection bandwidth is adjusted to the bandwidth required by the service request when the service request arrives, and the bandwidth is adjusted back to the initial bandwidth when the service is finished, so that the response rate of the service can be improved and the service quality of the service can be improved by adopting the mode of adjusting the bandwidth according to the service as required. The scheme can realize dynamic scheduling of the transmission network resources according to the actual service conditions, and reduce the networking cost.
Optionally, before determining the target connection from the pre-established connections, the method further includes:
establishing a trunk connection between trunk network edge nodes; configuring a point-to-point connection between a customer premise equipment CPE and a metro edge node; wherein the metro edge nodes are not configured for cross-connection.
As shown in fig. 4, during the network initialization phase, operations of pre-establishing a trunk connection, pre-establishing a point-to-point connection may be performed. Wherein pre-establishing a trunk connection means that a plurality of trunk connections (such as trunk connection B formed between trunk network edge nodes in fig. 4) are established between trunk network edge nodes, for example, the trunk connection can employ an initial bandwidth, such as a minimum bandwidth rate (X Mbps); the operation of pre-establishing a point-to-point connection refers to configuring a connection between the CPE OTN and the connected metro edge device (e.g., point-to-point connection a in fig. 4, which is made up of the CPE OTN and the connected metro edge device), e.g., the point-to-point connection may employ an initial bandwidth, e.g., a minimum bandwidth rate (X Mbps). Wherein the edge metro device is not configured for cross-connection.
In this embodiment, based on the point-to-point connection from the CPE to the metro edge node and the Mesh connection between the backbone network edge nodes, the connection is established by segments and no cross connection is configured, so that when the service arrives, an end-to-end connection can be formed according to the connection established by the segments, so as to improve the service response speed.
Optionally, the resource scheduling method further includes:
updating a trunk connection state table according to the connection state of the trunk connection; wherein the trunk connection status table comprises: connection identity, source node identity, destination node identity and connection status.
Specifically, in order to ensure the reliability of resource scheduling, the connection state (such as whether the connection is occupied or idle) of each service established in advance can be maintained, so that the connection in the idle state can be preferentially selected when the service is reached, thereby ensuring the service response speed and improving the service quality.
Alternatively, the trunk connection status table is maintained by a controller (e.g., an OTN controller), as shown in table 1 below.
TABLE 1
| Fields | Description of the invention |
| Connection label (ID) | |
| Source node Identification (ID) | |
| Destination node ID | |
| Status of | Occupied or idle |
Optionally, the determining the target connection from the pre-established connection according to the service request, and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement, includes:
from the pre-established connection, determining a target connection in an idle state according to the source port and the target port;
and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement according to the connection bandwidth of the service requirement.
Specifically, the determining, according to the source port and the destination port, the target connection in the idle state includes: determining trunk connection in an idle state according to the source port and the destination port; and configuring cross connection of the metropolitan area edge node and mapping of service and connection according to the trunk connection to form the target connection.
For example: according to A, Z end requirements (namely a source port and a destination port) in the service request, selecting a trunk connection which meets the source port and the destination port requirements and has an idle connection state based on the connection state table. As shown in fig. 5, according to the selected trunk connection whose connection state is "idle" (shown by the solid line in fig. 5), the two-sided metro edge device cross-connect is configured, and the mapping of traffic to connections (shown by the dashed line in fig. 5), the end-to-end connection C is formed (shown by the dashed line and the solid line in fig. 5), and the connection bandwidth of the formed connection is adjusted to the connection bandwidth of the traffic demand in the traffic request according to the connection bandwidth of the traffic demand.
Optionally, the resource scheduling method further includes: and updating the target connection to be in an occupied state. In this way, when the service arrives, the target connection is selected from the pre-established connections based on the service request, the connection bandwidth is adjusted, and the connection state is set to be in an occupied state, so that when other services arrive, other idle connections can be selected, and the resource scheduling reliability is improved.
Optionally, the resource scheduling method further includes: and updating the target connection to an idle state when the service is finished.
In this embodiment, when the service ends, the connection state of the corresponding connection is set to "idle" state (as shown by the solid line in fig. 6, which is set to idle state) so as to release the corresponding resource (as shown by the broken line in fig. 6), so that the connection is guaranteed to be available for other services, so as to reduce the occupation of the resource, and thus, the resource utilization rate can be improved.
According to the scheme, based on the pre-established connection, the service response rate can be greatly improved and the service quality can be improved according to the mode of adjusting the bandwidth of the service as required. Meanwhile, the dynamic scheduling of the transmission network resources can be realized according to the actual service conditions, and the networking cost is reduced.
The above embodiments are described with respect to the resource scheduling method of the present invention, and the corresponding devices and apparatuses thereof are described below with reference to the accompanying drawings.
As shown in fig. 7, an embodiment of the present invention provides a resource scheduling apparatus 700, including:
a receiving module 710, configured to receive a service request;
a first processing module 720, configured to determine a target connection from the pre-established connections according to the service request, and adjust the target connection from an initial bandwidth to a connection bandwidth of a service requirement;
and a second processing module 730, configured to adjust the target connection to the initial bandwidth when the service ends.
Optionally, the resource scheduling apparatus 700 further includes:
the establishing module is used for establishing trunk connection between the trunk network edge nodes;
a configuration module for configuring a point-to-point connection between customer premise equipment CPE and a metro edge node; wherein the metro edge nodes are not configured for cross-connection.
Optionally, the trunk connection and/or the point-to-point connection employs an initial bandwidth.
Optionally, the initial bandwidth is a minimum bandwidth of the employed connection technology.
Optionally, the resource scheduling apparatus 700 further includes:
a first updating module, configured to update a trunk connection state table according to a connection state of the trunk connection; wherein the trunk connection status table comprises: connection identity, source node identity, destination node identity and connection status.
Optionally, the service request carries an active port, a destination port, and a connection bandwidth of a service requirement.
Optionally, the first processing module 720 includes:
a processing unit, configured to determine, from among pre-established connections, a target connection in an idle state according to the source port and the destination port;
and the adjusting unit is used for adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement according to the connection bandwidth of the service requirement.
Optionally, the processing unit is further configured to:
determining trunk connection in an idle state according to the source port and the destination port;
and configuring cross connection of the metropolitan area edge node and mapping of service and connection according to the trunk connection to form the target connection.
Optionally, the resource scheduling apparatus 700 further includes:
and the second updating module is used for updating the target connection into an occupied state.
Optionally, the resource scheduling apparatus 700 further includes:
and the third updating module is used for updating the target connection into an idle state when the service is finished.
The resource scheduling device in the embodiment of the invention can realize each process in the resource scheduling method and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
As shown in fig. 8, an embodiment of the present invention further provides an OTN device of an optical transport network, including a transceiver 810, a processor 800, a memory 820, and a program or instructions stored on the memory 820 and executable on the processor 800; the steps in the above-mentioned resource scheduling method are implemented when the processor 800 executes the program or the instruction, and the same technical effects can be achieved, so that repetition is avoided and detailed description is omitted herein.
The transceiver 810 is configured to receive and transmit data under the control of the processor 800.
Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 800 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
The readable storage medium of the embodiment of the present invention stores a program or an instruction, where the program or the instruction implements the steps in the resource scheduling method described above when being executed by a processor, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.
Wherein the processor is as described in the above embodiments. . Is provided. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.
It is further noted that the terminals described in this specification include, but are not limited to, smartphones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.
In an embodiment of the invention, the modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices.
Where a module may be implemented in software, taking into account the level of existing hardware technology, a module may be implemented in software, and one skilled in the art may, without regard to cost, build corresponding hardware circuitry, including conventional Very Large Scale Integration (VLSI) circuits or gate arrays, and existing semiconductors such as logic chips, transistors, or other discrete components, to achieve the corresponding functions. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
The exemplary embodiments described above are described with reference to the drawings, many different forms and embodiments are possible without departing from the spirit and teachings of the present invention, and therefore, the present invention should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the invention to those skilled in the art. In the drawings, the size of the elements and relative sizes may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (13)
1. A method for scheduling resources, comprising:
receiving a service request;
determining target connection from the pre-established connection according to the service request, and adjusting the target connection from an initial bandwidth to a connection bandwidth of a service requirement;
and when the service is finished, the target connection is adjusted to the initial bandwidth.
2. The resource scheduling method of claim 1, wherein prior to determining the target connection from the pre-established connections, further comprising:
establishing a trunk connection between trunk network edge nodes;
configuring a point-to-point connection between a customer premise equipment CPE and a metro edge node; wherein the metro edge nodes are not configured for cross-connection.
3. A resource scheduling method according to claim 2, wherein the trunk connection and/or the point-to-point connection adopts an initial bandwidth.
4. A method of scheduling resources according to claim 1 or 3, characterized in that the initial bandwidth is the minimum bandwidth of the connection technology employed.
5. The resource scheduling method of claim 2, further comprising:
updating a trunk connection state table according to the connection state of the trunk connection;
wherein the trunk connection status table comprises: connection identity, source node identity, destination node identity and connection status.
6. The resource scheduling method of claim 1, wherein the service request carries an active port, a destination port, and a connection bandwidth of a service requirement.
7. The resource scheduling method according to claim 6, wherein the determining a target connection from the pre-established connections according to the service request and adjusting the target connection from an initial bandwidth to a connection bandwidth of a service requirement comprises:
from the pre-established connection, determining a target connection in an idle state according to the source port and the target port;
and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement according to the connection bandwidth of the service requirement.
8. The method of claim 7, wherein determining a target connection for an idle state based on the source port and the destination port comprises:
determining trunk connection in an idle state according to the source port and the destination port;
and configuring cross connection of the metropolitan area edge node and mapping of service and connection according to the trunk connection to form the target connection.
9. The resource scheduling method of claim 7, further comprising:
and updating the target connection to be in an occupied state.
10. The resource scheduling method of claim 1, further comprising:
and updating the target connection to an idle state when the service is finished.
11. A resource scheduling apparatus, comprising:
the receiving module is used for receiving the service request;
the first processing module is used for determining target connection from the pre-established connection according to the service request and adjusting the target connection from the initial bandwidth to the connection bandwidth of the service requirement;
and the second processing module is used for adjusting the target connection to the initial bandwidth when the service is finished.
12. An optical transport network, OTN, device comprising: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the method according to any one of claims 1 to 11, characterized in that the steps in the resource scheduling method are implemented when the program or instructions are executed by the processor.
13. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, implements the steps of the resource scheduling method of any one of claims 1 to 10.
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