CN115426552B - Device and method for realizing optical channel protection through photoelectric linkage - Google Patents
Device and method for realizing optical channel protection through photoelectric linkage Download PDFInfo
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- CN115426552B CN115426552B CN202211045737.6A CN202211045737A CN115426552B CN 115426552 B CN115426552 B CN 115426552B CN 202211045737 A CN202211045737 A CN 202211045737A CN 115426552 B CN115426552 B CN 115426552B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004891 communication Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims description 7
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
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Abstract
The invention provides a device and a method for realizing optical channel protection through photoelectric linkage, which are characterized in that an alarm processing unit is arranged to obtain configuration information of an electric layer service disk and a protection service disk, a corresponding relation of the service disk is arranged through a main control, and communication configuration among the alarm processing unit, the electric layer service disk and the protection service disk is established; on the basis, the alarm processing unit receives the alarm information from the electric layer service disk and sends the alarm information to the protection service disk, and the protection service disk performs protection switching of the optical signals through the alarm information.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a device and a method for realizing optical channel protection through photoelectric linkage.
Background
To increase the robustness of the communication link, optical communication systems typically increase the protection of signals through redundant lines, conventionally with optical multiplexing segment protection and optical channel protection.
The protection mode of the Optical channel (OpticalChannel, OCH) of the conventional Optical transport network (Optical Transport Network, OTN) is to configure an Optical Protection (OP) board at the source end or the destination end of the service. At the service transmitting end (i.e., source end), the OCH transmitting end is connected to the receiving end of the transmitting end OP board, the transmitting end OP board copies the optical signal into two parts, the optical signal is respectively sent out from two ports, wherein the two ports respectively travel different optical multiplexing section (OpticalMultiplex Section, OMS) service layers, i.e., source end double transmission. At the destination of the service, the two paths of optical signals are respectively connected with two ports of the receiving end OP plate, and the receiving end OP plate judges the current two paths of optical signals and sends the optical signals with higher quality to the OCH service plate of the destination, namely the destination receives the optical signals with higher quality. This is the traditional 1+1 protection scheme for OCH.
The extension of optical channel protection to networks other than OTN is known as optical channel protection as long as it is protection for a single wavelength. The conventional optical channel 1+1 protection performs protection switching based on the quality of the optical signal, but sometimes even if the quality of the optical signal is satisfactory, the received optical signal has actually occurred an error code, and at this time, switching is also required. The board card realizing the line side wavelength output is called an electric layer service disc, the board card realizing the optical path protection is called a protection service disc, the two board cards are usually two separate board cards, the error code information is usually obtained on the electric layer service disc, the optical power information is obtained on the protection service disc, and the protection switching action is implemented on the protection service disc, so that the information of the electric layer service disc is sent to the protection service disc, and the protection service disc can be switched according to the error code information of the electric layer service disc. In addition, usually, protection of multiple optical signals is integrated on one protection service disc, which corresponds to multiple electrical layer service discs, and under the condition that the positions of the electrical layer service discs and the protection service discs are arbitrary, protection switching cannot be effectively performed according to error code information of the optical signals.
In view of this, overcoming the defects in the prior art is a problem to be solved in the art.
Disclosure of Invention
The invention aims to solve the technical problem that under the condition that the positions of an electric layer service disk and a protection service disk are arbitrary, protection switching cannot be effectively performed according to error code information of an optical signal.
The embodiment of the invention adopts the following technical scheme:
In a first aspect, an apparatus for implementing optical channel protection through optoelectronic linkage is provided, including: at least one electric layer service disk, at least one protection service disk, an alarm processing unit and a main control board, wherein:
Each electric layer service disc is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disc, and the main control board is connected with the alarm processing unit;
The alarm processing unit is used for respectively acquiring configuration information of all electric layer service discs and all protection service discs;
The main control board is used for setting the corresponding relation of the service disk and informing the alarm processing unit, the electric layer service disk and the protection service disk;
The alarm processing unit is used for receiving alarm information from the electric layer service disk and sending the alarm information to the corresponding protection service disk according to the corresponding relation between the configuration information and the service disk;
the protection service disk is used for carrying out protection switching on the optical signals according to the received alarm information.
Preferably, the apparatus further comprises: a back plate, wherein:
the backboard is connected with the main control board and the alarm processing unit;
the back plate is connected with all the electric layer service discs and all the protection service discs in a communication way, and the main control board obtains configuration information of all the electric layer service discs and all the protection service discs through the back plate;
The main control board is used for sending the obtained configuration information of all the electric layer service disks and all the protection service disks to the alarm processing unit;
the main control is used for setting and setting the corresponding relation between the optical service channel of the electric layer service disc and the protection single-disc protection channel and informing the alarm processing unit, the electric layer service disc and the protection service disc;
and the alarm processing unit is used for establishing a communication relationship between the service disc of the same electric layer and the protection service disc according to the configuration information and the setting information of the main control.
Preferably, the configuration information specifically includes one or more of a service disc slot position, a service disc type and a service disc model.
Preferably, the electrical layer service disk specifically includes: optical service channel and electrical layer control unit, wherein:
At least 1 optical service channel is arranged in each electric layer service disk, the optical service channels are connected with the electric layer control unit through a third preset number of alarm pins, and each optical service channel contains at least 1 piece of alarm information;
the electric layer control unit is used for receiving and processing the alarm information from the optical service channel through the alarm pin.
Preferably, the service disc correspondence specifically includes: one or more of the corresponding relation between the electric layer service disk and the protection service disk, the corresponding relation between the electric layer service disk and the protection access in the protection service disk, and the corresponding relation between the optical service channel in the electric layer service disk and the protection access in the protection service disk.
Preferably, at least one protection channel is arranged in the protection service disk, and each protection channel corresponds to one of the electric layer service disks;
The alarm processing unit is used for determining the notch position of the electric layer service disk corresponding to the alarm information according to the configuration information;
and the optical service channels of the electric layer service disk corresponding to the alarm information are corresponding to the protection service disk and the protection access thereof according to the corresponding relation of the service disk, the alarm information is sent to the protection access, and the protection access is used for carrying out protection switching on the optical signals of the corresponding electric layer service disk according to the received alarm information.
Preferably, the electrical layer control unit is configured to receive, and process, alarm information from the optical service channel through the alarm pin, and specifically includes:
the alarm pin is connected with an interrupt pin in the electric layer control unit, and the alarm information is transmitted through the alarm pin and received by the interrupt pin;
and the electric layer control unit triggers interrupt processing after the interrupt pin receives the alarm information.
In a second aspect, a method for implementing optical channel protection by photoelectric linkage, where the method is applied to the device for implementing optical channel protection by photoelectric linkage, the method includes:
The alarm processing unit acquires configuration information of all electric layer service disks and all protection service disks, and the main control board sets a service disk corresponding relation and informs the alarm processing unit, the electric layer service disks and the protection service disks;
The alarm processing unit receives alarm information from an electric layer service disk and sends the alarm information to the corresponding protection service disk according to the corresponding relation between the configuration information and the service disk;
The protection service disc performs protection switching on the optical signal according to the received alarm information;
the configuration information specifically includes one or more of a service disc slot position, a service disc type, and a service disc model.
Preferably, the method further comprises:
The main control board is used for transmitting the service disc corresponding relation to the alarm processing unit and each service disc before the protection switching, so as to ensure that the protection service disc can perform the protection switching of the corresponding optical signals according to the subsequently received alarm information;
the service disc correspondence specifically includes: one or more of the corresponding relation between the electric layer service disk and the protection service disk, the corresponding relation between the electric layer service disk and the protection access in the protection service disk, and the corresponding relation between the optical service channel in the electric layer service disk and the protection access in the protection service disk.
Preferably, the protection service disc performs protection switching on the optical signal according to the received alarm information, and specifically includes:
The alarm processing unit determines the notch position of the electric layer service disk corresponding to the alarm information according to the configuration information;
And according to the corresponding relation of the service discs, the electric layer service disc corresponding to the alarm information is corresponding to the protection service disc and the protection channel thereof, the alarm information is sent to the protection channel, and the protection channel performs protection switching on the optical signals of the corresponding electric layer service disc according to the received alarm information.
The invention provides a device and a method for realizing optical channel protection through photoelectric linkage, which acquire configuration information of an electric layer service disk and a protection service disk through setting an alarm processing unit, and thereby establish communication configuration between the alarm processing unit and the electric layer service disk and the protection service disk; on the basis, the alarm processing unit receives the alarm information from the electric layer service disk and sends the alarm information to the protection service disk, and the protection service disk performs protection switching of the optical signals through the alarm information.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of an apparatus for protecting an optical channel by photoelectric linkage according to an embodiment of the present invention;
Fig.2 is a schematic structural diagram of an electrical layer service disk in a device for implementing optical channel protection by photoelectric linkage according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an electrical service disk in another device for implementing optical channel protection by photoelectric linkage according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for protecting an optical channel by photoelectric linkage according to an embodiment of the present invention;
fig. 5 is a schematic diagram of optical signal transmission and reception of an apparatus for implementing optical channel protection through optical-electrical linkage according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1:
The embodiment 1 of the invention provides a device for realizing light channel protection through photoelectric linkage.
As shown in fig. 1, includes: at least one electric layer service disk, at least one protection service disk, an alarm processing unit and a main control board, wherein:
Each electric layer service disc is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disc, and the main control board is connected with the alarm processing unit;
the alarm processing unit is used for respectively acquiring configuration information of all electric layer service disks and all protection service disks, and the main control board is used for setting corresponding relation of the service disks and informing the alarm processing unit, the electric layer service disks and the protection service disks; according to the configuration information and the corresponding relation of the service disk, respectively establishing a communication relation between the alarm processing unit and the electric layer service disk and between the alarm processing unit and the protection service disk;
The alarm processing unit is used for receiving alarm information from the electric layer service disk and sending the alarm information to the corresponding protection service disk according to the corresponding relation between the configuration information and the service disk;
the protection service disk is used for carrying out protection switching on the optical signals according to the received alarm information.
The electric layer service disc is a board card for realizing line side wavelength; the protection service disc is a board card for realizing optical path protection and is used for carrying out protection switching on optical signals; the alarm information is error code information and other alarm information obtained from the electric layer service disk, the optical signal power can be obtained from the protection service disk, and the slot positions of the electric layer service disk and the protection service disk on the chassis are arbitrary.
As shown in fig. 1, all the electric layer service discs are connected with the alarm processing unit one by one, the electric layer service disc n represents the last electric layer service disc arranged according to the sequence number from small to large in the first preset number of electric layer service discs, and each electric layer service disc independently sends the alarm information of the electric layer service disc to the alarm processing unit; all the protection service disks are connected with the alarm processing units one by one, the protection service disk m represents the last protection service disk arranged according to the sequence number from small to large in the second preset number of protection service disks, and the alarm processing unit sends corresponding alarm information to each protection service disk.
The communication relationship refers to a connection relationship between the alarm processing unit and each service disk, and the alarm service disk can thus know the type and model of each service disk connected thereto and the slot position in the chassis.
The service disc corresponding relation is that a plurality of optical channels may exist in one electric layer service disc, a plurality of protection channels also exist in a protection single disc, and engineering personnel are required to issue the corresponding relation to an alarm processing unit and the protection single disc through a main control according to actual optical fiber connection conditions. The setting of the corresponding relation of the service discs is set by the person skilled in the art according to the actual situation requirement, and after the setting is finished, the main control board informs each service disc and the alarm processing unit. There may be a default correspondence, and if there is no change in engineering implementation, the master control is not required to set the correspondence between the optical service channel of the electrical layer service disk and the service protection channel of the protection service disk, according to a default rule. At this time, the alarm processing unit only needs to acquire the configuration information of each single disk.
In the existing optical channel protection, protection switching is mostly performed based on judging the quality of an optical signal, but in some cases, even if the quality of the optical signal meets the requirement, the received optical signal actually has an error code, and in such cases, protection switching is also required for the optical signal; and the alarm processing unit correspondingly sends the error code information to the protection service disc, and the protection service disc correspondingly performs protection switching of different optical signals according to the obtained error code information and a preset service disc corresponding relation.
The alarm processing unit is different for the processing of the electric layer service disk and the protection service disk, wherein the alarm processing unit needs to collect the error code on the electric layer service disk so as to obtain alarm information, and the alarm processing unit needs to collect the obtained alarm information for the protection service disk and send the collected alarm information to the protection service disk so as to provide conditions for the protection switching of the protection service disk, so that the alarm processing unit needs to obtain the position and the information of each service disk and distinguish the types of the positions and the information, thereby establishing the communication relationship between the alarm processing unit and each service disk.
It should be noted that, the determination of the optical signal power and the error code information in the present embodiment is performed only at the sink, and it is not necessary to transmit the fault information such as the optical signal power and the error code information from the source to the sink.
The apparatus further comprises: a back plate, wherein:
the backboard is connected with the main control board and the alarm processing unit;
the back plate is connected with all the electric layer service discs and all the protection service discs in a communication way, and the main control board obtains configuration information of all the electric layer service discs and all the protection service discs through the back plate;
the alarm processing unit is arranged on the main control board or the backboard, and the main control board informs the alarm processing unit of the acquired configuration information of all the electric layer service disks and all the protection service disks;
when the service is opened, the main control firstly configures the corresponding relation between the service channel of the electric layer service disk and the protection channel of the protection service disk.
And the alarm processing unit is used for establishing a communication relationship between the same-layer service disk and the protection service disk according to the configuration information and the main control setting information.
The slot positions of the electric layer service disk and the protection service disk can be set arbitrarily; the configuration information comprises one or more of a service disc slot position, a service disc type and a service disc model; the main control setting information comprises the corresponding relation between the service channel of the electric layer service disc and the protection channel of the protection service disc.
Because a plurality of optical service channels may exist on each electric layer single disk, a plurality of protection channels exist on each protection single disk, the two protection channels are connected through optical fibers, and the connection between the two protection channels can be arbitrary, so that when the service is opened, the master control performs manual configuration according to the connection condition between the two protection channels. Default configuration may also be made according to certain rules. When the configuration is carried out according to a default rule, the preset information of the master control is not needed any more, and when the device is powered on or plugged in or out of the service discs, the master control board can know the positions of the service discs and the types of the service discs on the positions; at the moment, the main control board actively informs the alarm processing unit to establish a communication relationship with each single disk according to the information of each slot position; the communication between the alarm processing unit and the main control board can be ensured, the slot position information of each service disk is acquired from the main control board, and then the communication relation between the alarm processing unit and each service disk is established according to the slot position information.
The electric layer service disk specifically comprises: optical service channel and electrical layer control unit, wherein:
At least 1 optical service channel is arranged in each electric layer service disk, the optical service channels are connected with the electric layer control unit through a third preset number of alarm pins, and each optical service channel contains at least 1 piece of alarm information;
the electric layer control unit is used for receiving and processing the alarm information from the optical service channel through the alarm pin.
The alarm pin is connected with an interrupt pin in the electric layer control unit, and the alarm information is transmitted through the alarm pin and received by the interrupt pin;
and the electric layer control unit triggers interrupt processing after the interrupt pin receives the alarm information.
As shown in fig. 2, wherein the optical service channel i represents the last optical service channel of the optical service channels arranged in sequence numbers from small to large when the number of optical service channels is greater than or equal to 1; the number of optical service channels in different electrical layer service discs can be different, and the number of optical service channels in each electrical layer service disc is set by a person skilled in the art according to actual situation requirements, and the number of all optical service channels meeting the conditions is set within the protection scope of the embodiment.
The electric layer control unit adopts interrupt processing, so that when the electric layer control unit receives alarm information, the electric layer control unit can ensure that the electric layer control unit processes the alarm information immediately, and the reaction speed is higher; in the running process of the equipment, the alarm information is generated as an accidental event, most of the electric layer control units do not receive the alarm information and do not need to process the alarm information, and the interrupt processing ensures that all resources of the electric layer control units are used for processing other tasks of the electric layer, and the resources are only separated for processing when the alarm information is received, so that the slowing down of the processing speed of the electric layer control units due to the processing of the alarm information is avoided.
As shown in fig. 3, the alarm pin j represents the last alarm pin in the third preset number of alarm pins, which is arranged according to the sequence number from small to large, and the third preset number is determined by the number of alarm information that may be included in the optical service channel, and the third preset number is set by a person skilled in the art according to the actual situation, and all the setting of the third preset number that meets the condition is within the protection scope of the present embodiment.
In most cases, one protection service disc usually corresponds to a plurality of electrical layer service discs, and the one protection service disc processes optical signals of all electrical layer service discs connected with the one protection service disc and performs protection switching on the optical signals, while for different electrical layer service discs, protection service discs are required to provide different protection channels for processing, so that each protection channel needs to be corresponding to an electrical layer service disc according to configuration information of each service disc.
It should be noted that, the present embodiment does not limit the transmitted service to OTN signals, and does not involve network topology calculation, and OCH configuration from the source node to the working sink node and the protection sink node.
At least one protection passage is arranged in the protection service disk, and each protection passage corresponds to one of the electric layer service disks;
According to the configuration information, the alarm processing unit finds the notch position of the electric layer service disk corresponding to the received alarm information;
And according to the corresponding relation of the service discs, the found electric layer service disc corresponds to a protection service disc and a protection channel thereof, the alarm information is sent to the protection channel, and the protection channel performs protection switching on optical signals of the corresponding electric layer service disc according to the received alarm information.
Each protection channel in the protection service disk corresponds to only one electrical layer service disk, and one electrical layer service disk can correspond to one or more protection channels, and the protection channels perform protection switching on optical signals.
The number of the protection channels in each protection service disk is determined according to the number of the corresponding electric layer service disks, and when the number of the electric layer service disks corresponding to the protection service disks is larger, the protection channels are generally larger.
And when the alarm processing unit receives the alarm information, judging the electric layer service disk from which the alarm information is sent according to the connection relation between the alarm processing unit and all the electric layer service disks, and then directly sending the alarm information to a protection passage in the corresponding protection service disk according to the corresponding relation between the electric layer service disk and the protection passage, wherein the protection passage carries out protection switching on optical signals of the corresponding electric layer service disk according to the alarm information.
The protection service disk can perform optical signal protection switching according to the optical power information of the protection service disk besides performing optical signal protection switching on error code information of the electric layer service disk.
The protection service disc performs protection switching on the optical signal according to the received alarm information, and the protection service disc further comprises:
The protection service disk performs protection switching on the optical signal according to the optical power information received by the dual-transmission link of the protection service disk, in addition to performing protection switching on the optical signal according to the alarm information received by the electrical layer service disk.
The protection service disc receives or transmits optical signals to the opposite end through a double-transmission link, wherein the double-transmission link comprises a main link and a standby link and is used for respectively transmitting the optical signals to the receiving end through the main link and the standby link after copying the optical signals, and meanwhile, after receiving two paths of transmitted optical signals, the protection service disc of the receiving end screens the two paths of optical signals according to the power of the received optical signals, and receives the optical signals with higher quality, namely, the protection switching process according to the power of the optical signals.
Example 2:
embodiment 2 of the present invention provides a method for implementing optical channel protection by photoelectric linkage, which is based on the apparatus for implementing optical channel protection by photoelectric linkage in embodiment 1 above, and shows a method for implementing optical channel protection by photoelectric linkage in a more specific scenario.
As shown in fig. 4, the method includes:
In step 401, the alarm processing unit obtains configuration information of all electric layer service discs and all protection service discs.
The electric layer service disc is a board card for realizing line side wavelength; the protection service disc is a board card for realizing optical path protection and is used for carrying out protection switching on optical signals.
In step 402, a communication relationship between the alarm processing unit and the electrical layer service disk and the protection service disk is established.
The communication relationship refers to a connection relationship between the alarm processing unit and each service disk, and the alarm service disk can thus know the type and model of each service disk connected thereto and the slot position in the chassis.
In step 403, the main control board sets a service disc correspondence, and informs the alarm processing unit, the electric layer service disc and the protection service disc.
The service disc corresponding relation should be set manually before the electric layer service disc sends the alarm information, the setting of the service disc corresponding relation should be set by the person skilled in the art according to the actual situation demand, and after the setting is finished, the main control board informs each service disc and the alarm processing unit.
In step 404, the alarm processing unit receives alarm information from the electrical layer service disk, and sends the alarm information to the corresponding protection service disk according to the corresponding relationship between the configuration information and the service disk.
The alarm information is the error code information obtained from the electric layer service disk.
In step 405, the protection service disc performs protection switching on the optical signal according to the received alarm information.
And acquiring error code information from the electric layer service disk, sending the error code information as alarm information to an alarm processing unit for aggregation, and acquiring the electric layer service disk corresponding to the received alarm information by the alarm processing unit according to the connection relation, and correspondingly sending the error code information to the protection service disk corresponding to the electric layer service disk, wherein the protection service disk correspondingly performs protection switching of different optical signals according to the error code information in the alarm information.
The main control board obtains configuration information of all electric layer service discs and all protection service discs through the backboard; the main control board informs the alarm processing unit of the acquired configuration information of all the electric layer service disks and all the protection service disks, and the alarm processing unit establishes a communication relationship between the electric layer service disks and the protection service disks according to the configuration information;
The main control board is used for transmitting the service disc corresponding relation to the alarm processing unit and each service disc before the protection switching, so as to ensure that the protection service disc can perform the protection switching of the corresponding optical signals according to the subsequently received alarm information;
the service disc correspondence specifically includes: and one or more of the corresponding relations between the electric layer service disk and the protection service disk and the corresponding relations between the electric layer service disk and the protection access of the protection service disk.
The slot positions of the electric layer service disk and the protection service disk can be set arbitrarily; the configuration information includes one or more of a service disc slot location, a service disc type, and a service disc model.
When the device is powered on or plugged with service discs, the main control board can know the positions of the service discs and the types of the service discs on the positions; at the moment, the main control board actively informs the alarm processing unit to establish a communication relationship with each single disk according to the information of each slot position; the communication between the alarm processing unit and the main control board can be ensured, the slot position information of each service disk is acquired from the main control board, and then the communication relation between the alarm processing unit and each service disk is established according to the slot position information.
The protection service disc performs protection switching on the optical signal according to the received alarm information, and specifically includes:
According to the configuration information, the alarm processing unit finds the notch position of the electric layer service disk corresponding to the received alarm information;
And according to the corresponding relation of the service discs, the found electric layer service disc corresponds to a protection service disc and a protection channel thereof, the alarm information is sent to the protection channel, and the protection channel performs protection switching on optical signals of the corresponding electric layer service disc according to the received alarm information.
The number of the protection channels in each protection service disk is determined according to the number of the corresponding electric layer service disks, and when the number of the electric layer service disks corresponding to the protection service disks is larger, the protection channels are generally larger.
And when the alarm processing unit receives the alarm information, judging the electric layer service disk from which the alarm information is sent according to the connection relation between the alarm processing unit and all the electric layer service disks, and then directly sending the alarm information to a protection passage in the corresponding protection service disk according to the corresponding relation between the electric layer service disk and the protection passage, wherein the protection passage carries out protection switching on optical signals of the corresponding electric layer service disk according to the alarm information.
The protection service disk can perform optical signal protection switching according to the optical power information of the protection service disk besides performing optical signal protection switching on error code information of the electric layer service disk.
Example 3:
The embodiment 3 of the invention provides a device for realizing optical channel protection through photoelectric linkage, which further reveals the processes of transmitting and receiving optical signals by an electric layer service disk and protecting the service disk to perform protection switching of the optical signals according to optical power information on the basis of the embodiment 1 and the embodiment 2.
As shown in fig. 5, when the first station and the second station receive and transmit optical signals, the optical service channels in the electrical layer service disk are connected to the protection service disk through optical fibers, and then the optical signals are transmitted to the receiving end through the dual-transmission link of the protection service disk, where the dual-transmission link includes a main link and a standby link, and is used to copy the optical signals and then transmit the optical signals to the receiving end through the main link and the standby link, and meanwhile, after receiving two paths of transmitted optical signals, the protection service disk at the receiving end screens the two paths of optical signals according to the power of the received optical signals, receives optical signals with higher quality, and completes optical signal protection switching based on optical power information.
The main link and the standby link of the transmitting end also comprise one or more of a wave combining device and an optical amplifying device; and the main link and the standby link of the receiving end also comprise one or more of optical amplifying equipment and wave dividing equipment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A device for realizing optical channel protection through photoelectric linkage, comprising: at least one electric layer service disk, at least one protection service disk, an alarm processing unit, a main control board and a backboard, wherein:
Each electric layer service disc is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disc, and the main control board is connected with the alarm processing unit;
The alarm processing unit is used for respectively acquiring configuration information of all electric layer service discs and all protection service discs;
the main control board is used for setting the relation between the electric layer service disk and the protection service disk and informing the alarm processing unit, the electric layer service disk and the protection service disk;
the alarm processing unit is used for receiving alarm information from the electric layer service disk, wherein the alarm information comprises error code information of the electric layer service disk, and the alarm information is sent to the corresponding protection service disk according to the corresponding relation between the configuration information and the service disk;
the protection service disk is used for carrying out protection switching on the optical signals according to the received alarm information;
the backboard is connected with the main control board and the alarm processing unit;
the back plate is connected with all the electric layer service discs and all the protection service discs in a communication way, and the main control board obtains configuration information of all the electric layer service discs and all the protection service discs through the back plate;
The main control board is used for sending the obtained configuration information of all the electric layer service disks and all the protection service disks to the alarm processing unit;
The main control is used for setting and setting the corresponding relation between the optical service channel of the electric layer service disk and the protection channel of the protection service disk and informing the alarm processing unit, the electric layer service disk and the protection service disk;
The alarm processing unit is used for establishing a communication relationship between the service disc of the same electric layer and the protection service disc according to the configuration information and the setting information of the main control;
The configuration information specifically comprises one or more of a service disc slot position, a service disc type and a service disc model;
the electric layer service disk specifically comprises: optical service channel and electrical layer control unit, wherein:
At least 1 optical service channel is arranged in each electric layer service disk, the optical service channels are connected with the electric layer control unit through a third preset number of alarm pins, and each optical service channel contains at least 1 piece of alarm information;
the electric layer control unit is used for receiving and processing the alarm information from the optical service channel through the alarm pin.
2. The device for realizing optical channel protection by photoelectric linkage according to claim 1, wherein the service disc correspondence specifically comprises: one or more of the corresponding relation between the electric layer service disk and the protection service disk, the corresponding relation between the electric layer service disk and the protection access in the protection service disk, and the corresponding relation between the optical service channel in the electric layer service disk and the protection access in the protection service disk.
3. The device for realizing optical channel protection through photoelectric linkage according to claim 2, wherein at least one protection channel is arranged in the protection service disk, and each protection channel corresponds to one of the electric layer service disks;
The alarm processing unit is used for determining the notch position of the electric layer service disk corresponding to the alarm information according to the configuration information;
and the optical service channels of the electric layer service disk corresponding to the alarm information are corresponding to the protection service disk and the protection access thereof according to the corresponding relation of the service disk, the alarm information is sent to the protection access, and the protection access is used for carrying out protection switching on the optical signals of the corresponding electric layer service disk according to the received alarm information.
4. The device for implementing optical channel protection by optical-electrical linkage according to claim 3, wherein the electrical layer control unit is configured to receive and process the alarm information from the optical service channel through the alarm pin, and specifically includes:
the alarm pin is connected with an interrupt pin in the electric layer control unit, and the alarm information is transmitted through the alarm pin and received by the interrupt pin;
and the electric layer control unit triggers interrupt processing after the interrupt pin receives the alarm information.
5. A method for realizing optical channel protection through photoelectric linkage, wherein the method is applied to the device for realizing optical channel protection through photoelectric linkage according to any one of claims 1 to 4, and the method comprises the following steps:
The alarm processing unit acquires configuration information of all electric layer service disks and all protection service disks, and the main control board sets a service disk corresponding relation and informs the alarm processing unit, the electric layer service disks and the protection service disks;
The alarm processing unit receives alarm information from an electric layer service disk and sends the alarm information to the corresponding protection service disk according to the corresponding relation between the configuration information and the service disk;
The protection service disc performs protection switching on the optical signal according to the received alarm information;
the configuration information specifically includes one or more of a service disc slot position, a service disc type, and a service disc model.
6. The method for achieving optical channel protection through optoelectronic linkage according to claim 5, further comprising:
The main control board is used for transmitting the service disc corresponding relation to the alarm processing unit and each service disc before the protection switching, so as to ensure that the protection service disc can perform the protection switching of the corresponding optical signals according to the subsequently received alarm information;
the service disc correspondence specifically includes: one or more of the corresponding relation between the electric layer service disk and the protection service disk, the corresponding relation between the electric layer service disk and the protection access in the protection service disk, and the corresponding relation between the optical service channel in the electric layer service disk and the protection access in the protection service disk.
7. The method for implementing optical channel protection by optical-electrical linkage according to claim 6, wherein the protection service disc performs protection switching on the optical signal according to the received alarm information, specifically comprising:
The alarm processing unit determines the notch position of the electric layer service disk corresponding to the alarm information according to the configuration information;
And according to the corresponding relation of the service discs, the electric layer service disc corresponding to the alarm information is corresponding to the protection service disc and the protection channel thereof, the alarm information is sent to the protection channel, and the protection channel performs protection switching on the optical signals of the corresponding electric layer service disc according to the received alarm information.
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| CN102611499A (en) * | 2012-04-05 | 2012-07-25 | 烽火通信科技股份有限公司 | Method for realizing ODUK (Optical Channel Data Unit) protection switching by crossed disc of OTN (Optical Transport Network) equipment |
| CN107734404A (en) * | 2017-09-21 | 2018-02-23 | 烽火通信科技股份有限公司 | Wave-division device protection of electrical lay-er based on FPGA realizes system and method |
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| CN107294758A (en) * | 2016-04-13 | 2017-10-24 | 中兴通讯股份有限公司 | A kind of method of Board Protection Switching, apparatus and system |
| CN108462549B (en) * | 2017-11-22 | 2019-07-09 | 上海欣诺通信技术股份有限公司 | Protection group is superimposed reverse method, control device and optical communication equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611499A (en) * | 2012-04-05 | 2012-07-25 | 烽火通信科技股份有限公司 | Method for realizing ODUK (Optical Channel Data Unit) protection switching by crossed disc of OTN (Optical Transport Network) equipment |
| CN107734404A (en) * | 2017-09-21 | 2018-02-23 | 烽火通信科技股份有限公司 | Wave-division device protection of electrical lay-er based on FPGA realizes system and method |
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