CN109510716B - Signal processing device and method - Google Patents
Signal processing device and method Download PDFInfo
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- CN109510716B CN109510716B CN201710829233.6A CN201710829233A CN109510716B CN 109510716 B CN109510716 B CN 109510716B CN 201710829233 A CN201710829233 A CN 201710829233A CN 109510716 B CN109510716 B CN 109510716B
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- 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
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- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
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Abstract
The invention provides a signal processing device and a signal processing method, wherein a VC service single board is added in a service single board in an optical transport OTN network in the related technology, an STM-N signal received by a client side access single board is processed by an ODU cross single board in the related technology, then the STM-N signal is sent to the VC cross single board for processing, finally the STM-N signal is processed by the ODU cross single board, and the ODU signal after the STM-N signal conversion is sent to the optical transport network. By adopting the technical scheme, the problem that the cost for bearing the STM-N service in the OTN network in the related technology is high and service interruption is possibly caused is solved, on the premise of ensuring stable operation of the service, the method can be realized by only adding the VC cross single board in the service flow for bearing the STM-N service in the OTN network in the related technology, the operation is simple, and the reconstruction cost for achieving the purpose that the OTN network supports the STM-N service is greatly reduced.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a signal processing apparatus and method.
Background
In the related art, with the continuous upgrade of the Transport Network, each telecommunications Network operator will fully deploy an OTN (Optical Transport Network) Network, including a backbone Network, a core layer Network, an aggregation layer Network, an access layer Network, and the like. A network carried by SDH (Synchronous Digital Hierarchy)/MSTP (Multi-Service Transfer Platform) will successively quit Service. In the process of comprehensively upgrading the network carried by the SDH/MSTP to the network carried by the OTN, some clients need to continue to use the original STM-N (Synchronous Transport Module level N) service, and how to smoothly upgrade the part of service to be carried by the OTN network, including implementing STM-N service channel layer cross scheduling, is a common problem faced by telecommunication network operators.
An existing OTN network carries an STM-N service is to redevelop a client side access board 22, a line side access board, and a cross board on an OTN device to support access of an STM-N service and cross scheduling of a channel layer, specifically as shown in fig. 1, fig. 1 is a schematic diagram of an OTN network carrying an STM-N service according to the related art, as shown in fig. 1, an STM-N service is to be carried on the OTN network and cross scheduling of a channel layer is supported, at least 3 boards are required to be added, including a client side STM-N service access board, a universal VC (Virtual Container) and/or an ODUa (Optical channel Data Unit a ) cross board, and a line side VC and/or an ODUa access board, which are the most expensive boards in the OTN network. For a very large-scale OTN (optical transport network) managed by a telecommunication network operator, the technology is adopted to carry STM-N (STM-N) services, and the telecommunication network operator pays a high purchase cost. More seriously, the replacement of the common VC and/or ODUa cross board in the existing network will cause the service interruption of the running OTN network, and will bring about a huge engineering upgrading workload and risk. This is clearly not an optimal solution for the satisfaction of the telecommunication network operators in the context of the declining network construction costs of the telecommunication network operators in recent years.
Aiming at the problem that the cost for bearing STM-N service in an OTN network in the related technology is high and service interruption is possibly caused, no effective scheme exists at present.
Disclosure of Invention
The embodiment of the invention provides a signal processing device and a signal processing method, which are used for at least solving the problems that the cost for bearing STM-N service in an OTN (optical transport network) is high and service interruption is possibly caused in the related technology.
According to an embodiment of the present invention, there is provided a signal processing apparatus including: a client side access single board, configured to access a first synchronous transmission module N-level STM-N signal, and transmit the first STM-N signal to a VC cross single board after being processed by an ODU cross single board; the VC cross board is configured to receive a first STM-N signal subjected to ODU cross processing, perform VC cross processing on a VC signal of a virtual container corresponding to the first STM-N signal, obtain a second STM-N signal according to the VC signal subjected to VC cross processing, and transmit a second ODU signal corresponding to the second STM-N signal to a line side access board through the ODU cross board; the line side is accessed to a single board, and is configured to transmit the second ODU signal to an optical transmission network.
Optionally, the client side is connected to the board, and is further configured to encapsulate the first STM-N signal as a first ODU signal, and process the first ODU signal to the VC cross board through the ODU cross board.
Optionally, the VC cross board is further configured to obtain the first STM-N signal according to a received first ODU signal, perform VC cross processing on the VC signal mapped by the first STM-N signal, demap the VC signal subjected to VC cross processing to obtain a second STM-N signal, process, by the ODU cross board, a second ODU signal corresponding to the second STM-N signal, and send the second ODU signal to the line side access board.
Optionally, the VC cross board includes a client side VC port and a line side VC port; the client side access board is further configured to decapsulate the ODU signal sent to the client side VC port, reduce the first STM-N signal, and send the first STM-N signal to the client side VC port.
Optionally, the VC cross board includes: the client side VC port is used for receiving the first STM-N signal, mapping the first STM-N signal into a VC signal, and sending the VC signal subjected to VC cross processing to the line side VC port; the line side VC port is configured to demap the VC signal to obtain the second STM-N signal, encapsulate the second STM-N signal into the second ODU signal, and send the second ODU signal processed by the ODU cross matrix to the line side access board.
According to another embodiment of the present invention, there is also provided a signal processing apparatus including: a line side access single board, configured to receive an OTN signal transmitted in an optical transmission network, and transmit a second ODU signal, which is processed by an ODU cross single board, of the OTN signal to a VC cross single board; the VC cross board is configured to receive the second ODU signal, obtain a second STM-N signal according to the second ODU signal, perform VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, obtain a first STM-N signal according to the VC signal after the VC cross processing, and transmit the first STM-N signal to a client side access board after the ODU cross processing; and the client side is accessed to the single board and is used for transmitting the first STM-N signal subjected to the ODU cross processing to the client device.
Optionally, the VC cross board is further configured to decapsulate the second ODU signal to obtain the second STM-N signal.
Optionally, the VC cross board is further configured to perform VC cross processing on the VC signal mapped by the second STM-N signal, where the VC signal subjected to the VC cross processing is demapped to obtain the first STM-N signal, process, by the ODU cross board, the first ODU signal corresponding to the first STM-N signal, and transmit the first ODU signal subjected to the ODU cross processing to a client side access board.
Optionally, the VC cross board includes a client side VC port and a line side VC port; the line side VC port is configured to receive a second ODU signal subjected to ODU cross processing, decapsulate the second ODU signal to obtain a second STM-N signal, perform VC cross processing on a VC signal mapped by the second STM-N signal, and send the VC signal to a client side VC port; the client side VC port is configured to demap the VC signal to obtain the first STM-N signal, and transmit a first ODU signal corresponding to the first STM-N signal to a client side access board after ODU cross processing.
According to another embodiment of the present invention, there is also provided a signal processing method applied to the processing apparatus in the foregoing embodiment, the method including: accessing a first synchronous transmission module N-level STM-N signal, and performing ODU cross processing on the first STM-N signal; acquiring a VC signal of a virtual container according to the first STM-N signal subjected to ODU cross processing, performing VC cross processing on the VC signal, and acquiring a second STM-N signal according to the VC signal subjected to VC cross processing; and performing ODU cross processing on a second ODU signal corresponding to the second STM-N signal, and transmitting the second ODU signal to an optical transmission network.
According to another embodiment of the present invention, there is also provided a signal processing method applied to the processing apparatus in the foregoing embodiment, the method including: receiving an OTN signal transmitted by an optical transmission network, and obtaining a second ODU signal after the OTN signal is subjected to ODU cross processing; acquiring a second STM-N signal according to the second ODU signal, performing VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, and acquiring a first STM-N signal according to the VC signal after the VC cross processing; and transmitting the first STM-N signal to client equipment after the ODU cross processing.
According to another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program performs the method of any one of the above embodiments when executed.
According to another embodiment of the present invention, there is also provided a processor for executing a program, wherein the program executes to perform the method of any one of the above embodiments.
By the invention, a VC service single board is added to a service single board in an optical transport OTN network in the related technology, an STM-N signal received by a client side access single board is processed by an ODU cross single board in the related technology, then is sent to the VC cross single board for processing, finally is processed by the ODU cross single board for an STM-N signal, and the ODU signal after the conversion of the STM-N signal is sent to the optical transport network. By adopting the technical scheme, the problem that the cost for bearing the STM-N service in the OTN network in the related technology is high and service interruption is possibly caused is solved, on the premise of ensuring stable operation of the service, the method can be realized by only adding the VC cross single board in the service flow for bearing the STM-N service in the OTN network in the related technology, the operation is simple, and the reconstruction cost for achieving the purpose that the OTN network supports the STM-N service is greatly reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of an OTN network carrying STM-N traffic according to the related art;
FIG. 2 is a schematic diagram of a signal processing apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for an OTN network to carry STM-N traffic in accordance with the preferred embodiments;
fig. 4 is a block diagram of a structure of an apparatus for carrying STM-N service in an OTN network according to the preferred embodiment;
FIG. 5 is a service scheduling flowchart of an apparatus and method for carrying STM-N service in an OTN network according to the preferred embodiment;
FIG. 6 is a block diagram of apparatus hardware for carrying STM-N traffic in an OTN network in accordance with the preferred embodiments;
fig. 7 is a diagram of a layered service model for carrying STM-N services in an OTN network according to the preferred embodiment.
Detailed Description
The scheme in the application document can be used in an optical transport OTN network.
Example one
Fig. 2 is a schematic diagram of a signal processing apparatus according to an embodiment of the present invention, as shown in fig. 2, the signal processing apparatus includes: a client side access board 22, a VC cross board 24, a line side access board 26, and an ODU cross board 28, specifically:
a client side access board 22, configured to access a first synchronous transmission module N-level STM-N signal, and transmit the first STM-N signal to a VC cross board 24 after being processed by an ODU cross board 28;
VC cross board 24 is configured to receive a first STM-N signal subjected to ODU cross processing, perform VC cross processing on a VC signal of a virtual container corresponding to the first STM-N signal, obtain a second STM-N signal according to the VC signal subjected to VC cross processing, and transmit a second ODU signal corresponding to the second STM-N signal to line side access board 26 through ODU cross board 28;
the line side is accessed to a single board 26, and is configured to transmit the second ODU signal to an optical transmission network.
It should be added that the VC signal processed by the VC cross board can increase the transmission rate or decrease the transmission rate. The data volume of the ODU signal processed by the ODU cross matrix may be increased or decreased.
By the present invention, a VC service board is added to a service board in an optical transport OTN network in the related art, an STM-N signal received by a client side access board 22 is processed by an ODU cross board 28 in the related art, then sent to the VC cross board for processing, and finally processed by the ODU cross board to send an ODU signal after STM-N signal conversion to the optical transport network. By adopting the technical scheme, the problem that the cost for bearing the STM-N service in the OTN network in the related technology is high and service interruption is possibly caused is solved, on the premise of ensuring stable operation of the service, the method can be realized by only adding the VC cross single board in the service flow for bearing the STM-N service in the OTN network in the related technology, the operation is simple, and the reconstruction cost for achieving the purpose that the OTN network supports the STM-N service is greatly reduced.
Optionally, the client side access board 22 is further configured to encapsulate the first STM-N signal into a first ODU signal, and process the first ODU signal to the VC cross board 24 through the ODU cross board.
Optionally, the VC cross board 24 is further configured to obtain the first STM-N signal according to the received first ODU signal, perform VC cross processing on the VC signal mapped by the first STM-N signal, demap the VC signal subjected to VC cross processing to obtain a second STM-N signal, process a second ODU signal corresponding to the second STM-N signal by the ODU cross board 28, and send the second ODU signal to the line side access board 26.
Optionally, the VC crossbar single board 24 includes a client-side VC port and a line-side VC port; the client side access board 22 is further configured to decapsulate the ODU signal sent to the client side VC port, reduce the first STM-N signal, and send the first STM-N signal to the client side VC port.
Optionally, the VC crossbar board 24 includes: the client side VC port is used for receiving the first STM-N signal, mapping the first STM-N signal into a VC signal and sending the VC signal subjected to VC cross processing to the line side VC port; the line-side VC port is configured to demap the VC signal to obtain the second STM-N signal, encapsulate the second STM-N signal into the second ODU signal, and send the second ODU signal processed by the ODU cross matrix to the line-side access single board 26.
According to another embodiment of the present invention, there is also provided a signal processing apparatus, which has the same hardware structure as the previous processing apparatus, and is used for executing the opposite direction service, specifically:
a line side access single board 26, configured to receive an OTN signal transmitted in an optical transmission network, and transmit a second ODU signal, which is processed by an ODU cross single board 28, of the OTN signal to a VC cross single board 24;
the VC cross board 24 is configured to receive the second ODU signal, acquire a second STM-N signal according to the second ODU signal, perform VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, acquire a first STM-N signal according to the VC signal after the VC cross processing, and transmit the first STM-N signal to the client side access board 22 after the ODU cross processing;
the client side is accessed to a board 22, and is configured to transmit the first STM-N signal subjected to the ODU cross processing to the client device.
Optionally, the VC cross board is further configured to decapsulate the second ODU signal to obtain the second STM-N signal.
Optionally, the VC cross board is further configured to perform VC cross processing on the VC signal mapped by the second STM-N signal, where the VC signal subjected to the demapping VC cross processing obtains the first STM-N signal, processes a first ODU signal corresponding to the first STM-N signal by using the ODU cross board 28, and transmits the first ODU signal subjected to the ODU cross processing to the client-side access board.
Optionally, the VC cross board includes a client side VC port and a line side VC port; the line side VC port is configured to receive a second ODU signal subjected to ODU cross processing, decapsulate the second ODU signal to obtain a second STM-N signal, perform VC cross processing on a VC signal mapped by the second STM-N signal, and send the VC signal to a client side VC port; the client side VC port is configured to demap the VC signal to obtain the first STM-N signal, and transmit a first ODU signal corresponding to the first STM-N signal to a client side access board after performing ODU cross processing.
The following detailed description is given with reference to preferred embodiments of the present invention.
The technical problem to be solved by the preferred embodiment is that the technology of supporting a channel layer cross scheduling mode to bear the STM-N service by the OTN network in the related technology has the problems of high cost and difficult engineering reconstruction and upgrade, and the preferred embodiment provides a method and a device for bearing the STM-N service by the OTN network, wherein the method and the device are simpler in upgrade operation and lower in cost.
In order to achieve the above purpose, the preferred embodiment adopts the following technical solutions:
it should be added that both the ODUa and the ODUk in this document are ODU signals, and the ODUk signal may be OUD signal with a larger data volume.
Fig. 3 is a flowchart of a method for carrying STM-N traffic by an OTN network according to the preferred embodiment, and as shown in fig. 3, the method includes the following flows:
for easier understanding, the VC intersection processing internal port is divided into two parts, one part of the port is used for establishing ODUa intersection with the client side service access processing, and is referred to as a client side VC port, and the other part of the port is used for establishing ODUa intersection with the line side service access processing, and is referred to as a line side VC port.
Step S301, when a client side service in the OTN network is accessed, encapsulating the accessed STM-N service into an ODUa signal, entering an ODUa cross matrix for cross transmission, decapsulating the ODUa signal transmitted to the client side VC port of the VC cross processing section, and restoring the STM-N signal. Specifically, the following steps can be performed: processing and accessing STM-N service at a client side in an OTN (optical transport network) and encapsulating the STM-N service into an ODUa signal; after the service access of a client side and before VC crossing, ODUa crossing is established, and ODUa signals are firstly subjected to ODUa crossing establishment and then are transmitted to VC crossing processing; and de-encapsulating the ODUa signal received by the VC port at the client side before VC cross processing to restore the ODUa signal into an STM-N signal.
Step S302, mapping the STM-N service received by VC cross processing into VC signals, entering a VC cross matrix for cross transmission, and de-mapping the VC signals transmitted to a VC port at the line side of a VC cross module to restore the VC signals into STM-N signals. Specifically, the following steps can be performed: mapping STM-N service received by VC cross processing to VC signals; VC cross is established between a client side VC port and a line side VC port, VC signals of the client side VC port are transmitted to the line side VC port through a VC cross matrix, and the cross of granularity of VC11, VC12, VC2, VC3, VC4 and the like is supported, so that core scheduling functions of uplink and downlink selection, service convergence and the like of an STM-N service channel layer are realized; and then the VC signal received by the VC port is encapsulated to generate an STM-N signal.
Step S303 encapsulates the STM-N service received at the VC port into an ODUa signal, enters an ODUa cross matrix for cross transmission, encapsulates the ODUa signal transmitted to the line side service access process into an OTN signal, and transmits the OTN signal in the OTN network.
Specifically, the following steps can be performed:
firstly, encapsulating STM-N service received by a VC port into an ODUa signal.
And an ODUa cross is established between the VC port and the line side service access module, and the ODUa signals of the VC port are transmitted to a line side service access processing part through an ODUa cross matrix.
And then, encapsulating the ODUa signal received by the line side service access processing part into an OTN signal, and transmitting the OTN signal in the OTN network.
Fig. 4 is a block diagram of a structure of an apparatus for carrying STM-N service in an OTN network according to the preferred embodiment, as shown in fig. 4, including the following 6 modules:
1. client side service access module (which may comprise a client side access veneer)
2. Line side service access module (may comprise line side access single board)
3. VC cross dispatching module (can include VC cross single board)
4. ODUa cross module (may include ODU cross single board)
5. Service scheduling management module
6. Database module
A client side service access module: the method has the main functions of accessing STM-N signals at a client side, mapping the STM-N signals into ODUa signals and establishing ODUa intersection between a client side service access single board and a VC port at the client side of a VC intersection scheduling module.
Line side service access module: the main function is to access a line side OTN signal, map the OTN signal to an ODUa signal, and establish ODUa intersection between a line side service access board and a VC cross-scheduling module line side VC port.
VC cross module: the method has the main functions that STM-N signals are mapped into ODUa signals and used for respectively establishing ODUa intersection with a client side service access module and a line side service access module; the STM-N signal is de-mapped into a VC signal which is used for establishing VC cross between a client side VC port and a line side VC port of a VC cross module, and core cross matrix functions such as add-drop selection, service convergence and the like of an STM-N service channel layer are realized; the VC cross module supports crossing of granularity of VC11, VC12, VC2, VC3, VC4 and the like. The module is in butt joint with an ODUa cross module, and both input and output of the module are ODUa signals.
ODUa cross module: the main function is responsible for ODUa signal crossing, including ODUa signal crossing between a client side service access module and a VC port of a VC crossing module, and ODUa signal crossing between a VC port at a line side of the VC crossing module and a line side service access module; the method supports the granularity crossing of ODU0, ODU1, ODU2, ODU3, ODU4, ODUFlex and the like, and realizes the ODUa crossing matrix function. The module receives an ODUa signal from a client side access module, and sends the ODUa signal to a line side transport module. Meanwhile, the module is also in butt joint with a VC cross module, sends the ODUa signals to the VC cross module for VC cross, and receives the ODUa signals restored by the VC cross module.
A service scheduling management module: the main functions are service scheduling management, communication, configuration and scheduling among modules.
A database module: the main function is to store the relevant configuration information, including and limited to the storage of the relevant configuration information such as ports, traffic types, mapping modes, intersections, paths, and the like.
In a specific implementation process, the client side access module, the line side access module, the ODUa cross module, the service scheduling management module, and the database module described in the technical solution of the preferred embodiment may all be used for convenience (using facilities in the related art), and only an independent VC cross module needs to be added, and software upgrade is performed, so that an STM-N service can be supported in an OTN network, and core scheduling functions such as add-drop selection and service convergence on an STM-N service channel layer are supported. Compared with the prior art, the method and the device for bearing the STM-N service in the OTN reduce the hardware cost, engineering transformation risk and workload for bearing the STM-N service in the OTN and improve the upgrading benefit of the OTN of an operator.
The following are specific examples
In a specific embodiment, an apparatus and a method for carrying STM-N services in an OTN network are described with reference to the accompanying drawings.
Fig. 5 is a service scheduling flowchart of an apparatus and method for carrying STM-N services in an OTN network according to the preferred embodiment, and as shown in fig. 5, the flow includes the following steps:
step one, according to the STM-N service type of a user, an STM-N service type is configured on a service access module access port of a client side, and STM-N signals are mapped to ODUk signals.
Step two, configuring an OTN service type on the line side service access module access port according to the network path planning data, and mapping the OTN signal to a specific ODUk signal, which may be an ODU0, an ODU1, an ODU2, or an ODUFlex.
And step three, dividing an internal port of the VC cross module into a client side VC port and a line side VC port according to the STM-N service type of the user and network path planning data, respectively configuring specific STM-N service types on the client side VC port and the line side VC port of the VC cross module, and directly mapping STM-N signals to specific ODUk signals.
And step four, establishing ODUk cross between the client side service access module access port and the VC cross module client side VC port.
And step five, establishing ODUk cross between the access port of the line side service access module and the VC port of the line side of the VC cross module.
And sixthly, establishing VC cross between a VC port at a client side of the VC cross module and a VC port at a line side of the VC cross module, wherein the specific VC cross granularity is determined by the service mapping of the VC port at the client side, and the specific VC cross granularity may be VC11, VC12, VC2, VC3 or VC 4.
In this way, the configuration of an STM-N service carried in the OTN network is completed.
As shown in fig. 5, the technical solution of the preferred embodiment makes full use of the existing service module resources in the OTN network, and avoids re-developing the client side access module and the line side access module based on VC cross scheduling. For a client side, the existing client side service access module in the OTN is fully utilized to access STM-1, STM-4, STM-16 or STM-64 services; for the line side, the existing line side service access module in the OTN network is fully utilized to transmit the OTN service carrying STM-1, STM-4, STM-16 or STM-64. All the cross scheduling functions related to STM-N service termination, regeneration processing, add/drop selection, service convergence and the like are realized in a newly developed VC cross module.
The VC cross module can be used as a new service single board, can be installed in a service slot position of OTN equipment, and can be provided with a plurality of VC cross single boards, so that the VC cross capacity can be dynamically expanded.
Fig. 6 is a hardware block diagram of an apparatus for carrying STM-N traffic in an OTN network according to the preferred embodiment, as shown in fig. 6, the apparatus includes the following parts:
a client side access module: the client side access module is composed of client side service access modules supporting STM-1, STM-4, STM-16 and STM-64 services.
A cross module: the cross module consists of an ODUa cross submodule and a VC cross submodule and respectively completes the functions of an ODUa cross matrix and a VC cross matrix.
Line side access module: the line side access module is composed of a line side service access module supporting OTU (Optical channel Transport Unit) service.
Except that the VC cross sub-module needs to be newly added, other modules can utilize the existing modules of the old OTN network.
By adopting the technical scheme of the preferred embodiment, in the implementation of the engineering for bearing the STM-N service in the specific OTN network, only the VC cross board needs to be newly added, and the STM-N service access board at the client side, the ODUa cross board, and the OTN service access board at the line side can be used for convenience. Compared with the scheme of the prior art (shown in figure 1), the technical scheme of the preferred embodiment only needs to add a VC cross single board from the aspect of purchase cost, and other single boards can be used for service, so that the method has great cost advantage; from the aspect of engineering implementation, the technical scheme of the preferred embodiment has the characteristics of simple operation, small risk, short period and the like, and can effectively reduce the risk and workload of engineering modification and upgrading.
Fig. 7 is a diagram of a layered service model for carrying STM-N services in an OTN network according to the preferred embodiment, as shown in fig. 7, the layered service model includes:
VC path: a service layer path of the end-to-end STM-N service is used for bearing the STM-N service of a client layer and is called a VC path.
MS (Multiplex Section) path: a service layer path of an end-to-end VC service, which is used to carry VC layer services, is called a multiplex section path.
RS (Regenerator Section) path: a service layer path of end-to-end MS traffic, used to carry MS layer traffic, is called a hop path.
ODUk path: a service layer path of the end-to-end RS service is used for carrying the RS layer service, and is called a low-order ODU path.
ODU4 path: a service layer path of the end-to-end ODUk service is used to carry the ODUk layer service, and is called a higher-order ODU path.
OCH (Optical Channel) path: a service layer path of the end-to-end ODU4 service is used to carry ODU4 layer service, and is called an optical channel layer path.
From the client side service, there are also an OMS (Optical Multiplexing Section), an OTS (Optical Transmission Section) and the like under the OCH path in sequence, which belong to the OTN service hierarchy defined by the TMF (telecommunications Management Forum) standard and are not described herein again.
It should be understood that the above specific embodiments are provided only for the description of the preferred embodiment, and should not be construed as limiting the preferred embodiment, and the system and method described in the preferred embodiment are not only effective for the apparatus and method for carrying STM-N services in an OTN network, but also have equivalent functions for the apparatus and method for carrying STM-N services in other networks. It will be appreciated by those skilled in the art that changes and modifications may be made to the embodiments described above, and it is intended to cover in the appended claims all such changes and modifications as fall within the true spirit and scope of the invention.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
EXAMPLE III
According to another embodiment of the present invention, there is also provided a signal processing method applied to the processing apparatus described in the above embodiment, the method including:
accessing a first synchronous transmission module N-level STM-N signal, and performing ODU cross processing on the first STM-N signal;
step two, acquiring a VC signal of a virtual container according to the first STM-N signal subjected to ODU cross processing, performing VC cross processing on the VC signal, and acquiring a second STM-N signal according to the VC signal subjected to VC cross processing;
and step three, performing ODU cross processing on a second ODU signal corresponding to the second STM-N signal, and transmitting the second ODU signal to an optical transmission network.
According to another embodiment of the present invention, there is also provided a signal processing method applied to the processing apparatus described in the above embodiment, the method including:
receiving an OTN signal transmitted by an optical transmission network, and performing ODU cross processing on the OTN signal to obtain a second ODU signal;
acquiring a second STM-N signal according to the second ODU signal, performing VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, and acquiring a first STM-N signal according to the VC signal after the VC cross processing;
and step three, the first STM-N signal is transmitted to the client device after being subjected to ODU cross processing.
Example four
According to another embodiment of the present invention, there is also provided a processor for executing a program, wherein the program executes to perform the method of any one of the above embodiments.
EXAMPLE five
According to another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program performs the method described in any one of the above embodiments when executed.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An apparatus for processing a signal, comprising:
a client side access single board, configured to access a first synchronous transmission module N-level STM-N signal, and transmit the first STM-N signal to a VC cross single board after being processed by an ODU cross single board;
the VC cross board is configured to receive a first STM-N signal subjected to ODU cross processing, perform VC cross processing on a VC signal of a virtual container corresponding to the first STM-N signal, obtain a second STM-N signal according to the VC signal subjected to VC cross processing, and transmit a second ODU signal corresponding to the second STM-N signal to a line side access board through the ODU cross board;
the line side access single board is configured to transmit the second ODU signal to an optical transmission network;
the client side is connected to the single board, and is further configured to encapsulate a first STM-N signal into a first ODU signal, and process the first ODU signal to the VC cross single board through the ODU cross single board;
the VC cross board is further configured to obtain the first STM-N signal according to the received first ODU signal, perform VC cross processing on the VC signal mapped by the first STM-N signal, demap the VC signal subjected to VC cross processing to obtain a second STM-N signal, process, by the ODU cross board, a second ODU signal corresponding to the second STM-N signal, and send the second ODU signal to the line side access board.
2. The apparatus of claim 1, wherein the VC crossbar board comprises a client-side VC port and a line-side VC port;
the client side VC port is used for receiving the first STM-N signal, mapping the first STM-N signal into a VC signal, and sending the VC signal subjected to VC cross processing to the line side VC port;
the line side VC port is configured to demap the VC signal to obtain the second STM-N signal, encapsulate the second STM-N signal into the second ODU signal, and send the second ODU signal processed by the ODU cross matrix to the line side access board.
3. An apparatus for processing a signal, comprising:
a line side access single board, configured to receive an OTN signal transmitted in an optical transmission network, and transmit a second ODU signal, which is processed by an ODU cross single board, of the OTN signal to a VC cross single board;
the VC cross board is configured to receive the second ODU signal, obtain a second STM-N signal according to the second ODU signal, perform VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, obtain a first STM-N signal according to the VC signal after the VC cross processing, and transmit the first STM-N signal to a client side access board after the ODU cross processing;
the client side is accessed to the single board and used for transmitting the first STM-N signal subjected to the ODU cross processing to the client device;
the VC cross board is further configured to decapsulate the second ODU signal to obtain the second STM-N signal; the VC cross board is further configured to perform VC cross processing on the VC signal mapped by the second STM-N signal, obtain the first STM-N signal from the VC signal subjected to demapping the VC cross processing, process the first ODU signal corresponding to the first STM-N signal by the ODU cross board, and transmit the first ODU signal subjected to ODU cross processing to a client side access board.
4. The apparatus of claim 3, wherein the VC cross-board comprises a client-side VC port and a line-side VC port;
the line side VC port is configured to receive a second ODU signal subjected to ODU cross processing, decapsulate the second ODU signal to obtain a second STM-N signal, perform VC cross processing on a VC signal mapped by the second STM-N signal, and send the VC signal to a client side VC port;
the client side VC port is configured to demap the VC signal to obtain the first STM-N signal, and transmit a first ODU signal corresponding to the first STM-N signal to a client side access board after ODU cross processing.
5. A signal processing method applied to the processing apparatus according to any one of claims 1 to 2, the method comprising:
accessing a first synchronous transmission module N-level STM-N signal, and performing ODU cross processing on the first STM-N signal;
acquiring a VC signal of a virtual container according to the first STM-N signal subjected to ODU cross processing, performing VC cross processing on the VC signal, and acquiring a second STM-N signal according to the VC signal subjected to VC cross processing;
and performing ODU cross processing on a second ODU signal corresponding to the second STM-N signal, and transmitting the second ODU signal to an optical transmission network.
6. A signal processing method applied to the processing device of any one of claims 3 to 4, the method comprising:
receiving an OTN signal transmitted by an optical transmission network, and obtaining a second ODU signal after the OTN signal is subjected to ODU cross processing;
acquiring a second STM-N signal according to the second ODU signal, performing VC cross processing on a VC signal of a virtual container corresponding to the second STM-N signal, and acquiring a first STM-N signal according to the VC signal after the VC cross processing;
and transmitting the first STM-N signal to client equipment after the ODU cross processing.
7. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program when executed performs the method of any of the preceding claims 5 to 6.
8. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to perform the method of any of the preceding claims 5 to 6 when running.
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| CN111162864B (en) * | 2019-12-26 | 2022-08-23 | 上海欣诺通信技术股份有限公司 | Transmission method, device and equipment of low-rate signal and storage medium |
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| CN1791278A (en) * | 2004-12-14 | 2006-06-21 | 华为技术有限公司 | Synchronous optical network and optical transmission network uniform dispatching system and its method |
| CN1852616A (en) * | 2005-12-07 | 2006-10-25 | 华为技术有限公司 | Optical transmission network nod structure, apparatus and business scheduling method |
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| CN100531191C (en) * | 2004-09-06 | 2009-08-19 | 华为技术有限公司 | Method and system for realizing service in transfer layer of NGN network |
| CN101137247B (en) * | 2007-10-16 | 2011-05-11 | 中兴通讯股份有限公司 | Access system and method for PDH branch service |
| CN108736975A (en) * | 2017-04-17 | 2018-11-02 | 中兴通讯股份有限公司 | A kind of optical transmission system |
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| CN1791278A (en) * | 2004-12-14 | 2006-06-21 | 华为技术有限公司 | Synchronous optical network and optical transmission network uniform dispatching system and its method |
| CN1852616A (en) * | 2005-12-07 | 2006-10-25 | 华为技术有限公司 | Optical transmission network nod structure, apparatus and business scheduling method |
| CN106992838A (en) * | 2016-01-21 | 2017-07-28 | 华为技术有限公司 | A kind of method and apparatus for transmitting common wireless interface signal |
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