CN115426552A - 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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- CN115426552A CN115426552A CN202211045737.6A CN202211045737A CN115426552A CN 115426552 A CN115426552 A CN 115426552A CN 202211045737 A CN202211045737 A CN 202211045737A CN 115426552 A CN115426552 A CN 115426552A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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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 a power layer service disk and a protection service disk, the corresponding relation of the service disk is set through a main control unit, and communication configuration between the alarm processing unit and the power layer service disk and the protection service disk is established; on the basis, the alarm processing unit receives alarm information from the electrical layer service disk and sends the alarm information to the protection service disk, and the protection service disk performs protection switching of 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
In order to increase the robustness of the communication link, the optical communication system usually adds signal protection through redundant lines, and optical multiplex section protection and optical channel protection conventionally exist.
In a conventional Optical Channel (OCH) protection method of an Optical Transport Network (OTN), an Optical Protection (OP) board is configured at each source end or destination end of a service. At a transmitting end (i.e., a source end) of a service, a transmitting end of an OCH is connected to a receiving port of a transmitting end OP board, the transmitting end OP board duplicates optical signals into two parts, the optical signals are respectively transmitted from two ports, wherein the two ports respectively transmit different Optical Multiplex Section (OMS) service layers, i.e., the source end is double-transmitting. At the service destination, the two optical signals are respectively connected to two ports of the receiving end OP board, the receiving end OP board judges the current two optical signals, and sends the optical signals with higher quality to the OCH service board at the destination, that is, the destination receives preferentially. This is the traditional 1+1 protection of OCH.
Extending optical channel protection to networks other than OTNs is referred to as optical channel protection as long as protection is directed to a single wavelength. The protection of the conventional optical channel 1+1 is implemented by performing protection switching based on the quality of an optical signal, but sometimes even if the quality of the optical signal meets the requirement, the optical signal actually received has an error code, and at this time, switching is also required. The board cards for realizing the line side wavelength output are called electrical layer service discs, the board cards for realizing the optical path protection are called protection service discs, the two board cards are usually two separate board cards, error code information is usually obtained on the electrical layer service discs, optical power information is obtained on the protection service discs, the protection switching action is implemented on the protection service discs, therefore, the information of the electrical layer service discs is sent to the protection service discs, and the protection service discs can be switched according to the error code information of the electrical layer service discs. In addition, protection of multiple paths of optical signals is usually integrated on one protection service disk, which corresponds to multiple electrical-layer service disks, and protection switching cannot be performed effectively according to error code information of optical signals under the condition that the positions of the electrical-layer service disks and the protection service disks are arbitrary.
In view of the above, it is an urgent problem in the art to overcome the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is that under the condition that the positions of the electrical layer service disk and the protection service disk are arbitrary, the protection switching can not be effectively carried out according to the error code information of the optical signal.
The embodiment of the invention adopts the following technical scheme:
in a first aspect, a device for protecting an optical channel through photoelectric 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 disk is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disk, 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 electrical layer service disks and all protection service disks;
the main control board is used for setting the corresponding relation of the service disks and informing the alarm processing unit, the electrical layer service disk and the protection service disk;
the alarm processing unit is used for receiving alarm information from the electrical 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;
and 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 back board is connected with the main control board and the alarm processing unit;
the back plate is in communication connection with all the electric layer service disks and all the protection service disks, and the main control board acquires configuration information of all the electric layer service disks and all the protection service disks through the back plate;
the main control board is used for sending the acquired 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 the corresponding relation between the optical service channel of the electrical layer service disk and the protection channel of the single protection disk and informing the alarm processing unit, the electrical layer service disk and the protection service disk;
and the alarm processing unit is used for establishing a communication relation between the service disk of the same electric layer and the protection service disk according to the configuration information and the setting information of the master control.
Preferably, the configuration information specifically includes one or more of a service disk slot position, a service disk type, and a service disk model.
Preferably, the electrical layer service disk specifically comprises: an optical traffic channel and electrical layer control unit, wherein:
each electrical layer service disk is provided with at least 1 optical service channel, the optical service channels are connected with the electrical layer control unit through a third preset number of alarm pins, and each optical service channel comprises at least 1 piece of alarm information;
and the electrical layer control unit is used for receiving the alarm information from the optical service channel through the alarm pin and processing the alarm information.
Preferably, the service disk correspondence specifically includes: one or more of the corresponding relationship between the electrical layer service disk and the protection service disk, the corresponding relationship between the electrical layer service disk and the protection access in the protection service disk, and the corresponding relationship between the optical service channel in the electrical layer service disk and the protection access in the protection service disk.
Preferably, at least one protection path is arranged in the protection service disk, and each protection path corresponds to one of the electrical layer service disks;
the alarm processing unit is used for determining the notch position of the electrical layer service disk corresponding to the alarm information according to the configuration information;
and the optical service channel of the electrical layer service disk corresponding to the alarm information corresponds to a protection service disk and a protection path thereof according to the corresponding relationship of the service disk, and the alarm information is sent to the protection path, wherein the protection path is used for carrying out protection switching on the optical signal of the corresponding electrical layer service disk according to the received alarm information.
Preferably, 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 electrical 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 through optical-electrical linkage is applied to the apparatus for implementing optical channel protection through optical-electrical linkage, and the method includes:
the alarm processing unit acquires configuration information of all electrical layer service disks and all protection service disks, the main control board sets a service disk corresponding relation, and informs the alarm processing unit, the electrical layer service disks and the protection service disks;
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 protection service disk performs protection switching on the optical signals according to the received alarm information;
the configuration information specifically includes one or more of a service disk slot position, a service disk type, and a service disk model.
Preferably, the method further comprises:
the main control board is preset with a service disk corresponding relation, before the protection switching is carried out, the main control board sends the service disk corresponding relation to the alarm processing unit and each service disk, and the service disks are used for ensuring that the protection service disks can carry out protection switching of corresponding optical signals according to subsequently received alarm information;
the service disk correspondence specifically includes: one or more of the corresponding relationship between the electrical layer service disk and the protection service disk, the corresponding relationship between the electrical layer service disk and the protection access in the protection service disk, and the corresponding relationship between the optical service channel in the electrical layer service disk and the protection access in the protection service disk.
Preferably, the protection service disk 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 electrical layer service disk corresponding to the alarm information according to the configuration information;
and according to the corresponding relation of the service disks, the electrical layer service disk corresponding to the alarm information corresponds to a protection service disk and a protection access thereof, the alarm information is sent to the protection access, and the protection access carries out protection switching on the optical signals of the corresponding electrical layer service disk according to the received alarm information.
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 a power layer service disk and a protection service disk, and communication configuration between the alarm processing unit and the power layer service disk and the protection service disk is established; on the basis, the alarm processing unit receives alarm information from the electrical layer service disk and sends the alarm information to the protection service disk, and the protection service disk performs protection switching of optical signals through the alarm information.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an apparatus for implementing optical channel protection through an optical-electrical linkage according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electrical layer service disk in an apparatus for implementing optical channel protection through optical-electrical linkage according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an electrical layer service disk in another apparatus for implementing optical channel protection by optical-electrical linkage according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a method for implementing optical channel protection through optical-electrical linkage according to an embodiment of the present invention;
fig. 5 is a schematic diagram of optical signal transmission and reception performed by the apparatus for implementing optical channel protection through optical-electrical linkage according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1:
the embodiment 1 of the invention provides a device for realizing optical 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 disk is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disk, 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 electrical layer service disks and all protection service disks, and the main control board is used for setting the corresponding relation of the service disks and informing the alarm processing unit, the electrical layer service disks and the protection service disks; respectively establishing a communication relation between the alarm processing unit, the service disk of the same electric layer and the protection service disk according to the configuration information and the corresponding relation of the service disks;
the alarm processing unit is used for receiving alarm information from the electrical 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;
and 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 disk is a board card for realizing the wavelength of the line side; the protection service disk is a board card for realizing light path protection and is used for carrying out protection switching on optical signals; the alarm information is the 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, wherein all the electrical layer service disks are connected to the alarm processing unit one by one, the electrical layer service disk n represents the last electrical layer service disk arranged by a sequence number from small to large in the electrical layer service disks of the first preset number, and each electrical layer service disk sends its own alarm information to the alarm processing unit separately; and all the protection service disks are connected with the alarm processing unit one by one, the protection service disk m represents the last protection service disk arranged according to a sequence number from small to large in the protection service disks with the second preset number, and the alarm processing unit sends corresponding alarm information to each protection service disk.
The communication relation refers to the connection relation between the alarm processing unit and each service disk, and the alarm service disk can know the type and model of each service disk connected with the alarm processing unit and the position of the slot in the chassis.
The service disk corresponding relation is that one electrical layer service disk may have a plurality of optical channels, and the protection single disk also has a plurality of protection channels, and the corresponding relation between the two needs engineering personnel to issue the corresponding relation to the alarm processing unit and the protection service single disk through the main control according to the actual optical fiber connection condition. The setting of the corresponding relation of the service disks is set by the technicians in the field according to the actual condition requirements, and the main control board informs each service disk and the alarm processing unit after the setting is finished. A default correspondence may exist, and if no change is made in the engineering implementation, the main 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 obtain 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 even if the quality of the optical signal meets the requirement, actually, the received optical signal has an error code, and in this case, protection switching needs to be performed on the optical signal; therefore, the error code information obtained from the electrical layer service disk is used as alarm information to be sent to an alarm processing unit for collection, the alarm processing unit correspondingly sends the error code information to the protection service disk, and the protection service disk correspondingly carries out protection switching of different optical signals according to the obtained error code information and the preset corresponding relation of the service disk.
The alarm processing unit is different for processing the electrical layer service disk and the protection service disk, wherein the alarm processing unit needs to collect error codes on the electrical layer service disk to obtain alarm information, and for the protection service disk, the alarm processing unit needs to collect and send the obtained alarm information to the protection service disk to provide conditions for protection switching of the protection service disk, so that the alarm processing unit needs to obtain the position and information of each service disk and distinguish the types of the service disks, thereby establishing a communication relationship between the alarm processing unit and each service disk.
It should be noted that, in this embodiment, the determination of the optical signal power and the error code information is only performed 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 device further comprises: a back plate, wherein:
the back board is connected with the main control board and the alarm processing unit;
the back plate is in communication connection with all the electric layer service disks and all the protection service disks, and the main control board acquires configuration information of all the electric layer service disks and all the protection service disks through the back plate;
the alarm processing unit is arranged on the main control board or the back board, 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 a service is opened, the main control needs to configure the corresponding relationship between the service channel of the electrical layer service disk and the protection channel of the protection service disk.
And the alarm processing unit is used for establishing a communication relation between the service disk of the same electric layer and the protection service disk according to the configuration information and the main control setting information.
The slot positions of the electrical layer service disk and the protection service disk can be set arbitrarily; the configuration information comprises one or more of the position of a service disk slot, the type of the service disk and the type of the service disk; the main control setting information comprises the corresponding relation between the service channel of the electrical layer service disk and the protection channel of the protection service disk.
Because a plurality of optical service channels may exist on each electrical layer single disk, a plurality of protection channels exist on each protection single disk, the optical service channels and the protection single disks are connected through optical fibers, and the connection between the optical service channels and the protection single disks can be arbitrary, the main control performs manual configuration according to the fiber connection condition between the optical service channels and the protection single disks when the service is opened. Default configuration may also be performed according to some rule. When the configuration is carried out according to the default rule, the preset information of the main control is not needed any more, and when the device is powered on or plugged with the service disk, the main control board can know the slot position of each service disk and the type of the service disk on each slot position; at the moment, the master control board actively informs the alarm processing unit to establish a communication relation 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 also be ensured, the slot position information of each service disk is obtained from the main control board, and then the communication relationship between the alarm processing unit and each service disk is established according to the slot position information.
The electrical layer service disk specifically comprises: an optical traffic channel and electrical layer control unit, wherein:
each electrical layer service disk is provided with at least 1 optical service channel, the optical service channels are connected with the electrical layer control unit through a third preset number of alarm pins, and each optical service channel comprises at least 1 piece of alarm information;
and the electrical 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 electrical 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, where the optical service channel i represents the last optical service channel arranged by the 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 disks may be different, the number of optical service channels in each electrical layer service disk is set by a person skilled in the art according to actual needs, and the number of all optical service channels that satisfy the condition should be set within the protection range of this embodiment.
The electric layer control unit adopts interrupt processing, so that the electric layer control unit can process immediately when receiving the alarm information, and the reaction speed is higher; and in the running process of the equipment, the alarm information occurs 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 per se at ordinary times, and the resources are distributed for processing only when the alarm information is received, so that the phenomenon that the ordinary processing speed of the electric layer control units is slowed down due to the processing of the alarm information is avoided.
As shown in fig. 3, the alarm pin j represents the last alarm pin arranged from small to large in the alarm pins of the third preset number, where the third preset number is determined by the number of alarm information that may be included in the optical service channel, and a person skilled in the art sets the third preset number according to actual conditions, and the setting of all the third preset numbers that meet the conditions should be within the protection range of this embodiment.
In most cases, one protection service disk usually corresponds to multiple electrical layer service disks, the one protection service disk processes optical signals of all electrical layer service disks connected to the one protection service disk and performs protection switching on the optical signals, and different protection channels are provided for different electrical layer service disks to be protected to process, so that each protection channel needs to be corresponding to an electrical layer service disk according to configuration information of each service disk.
It should be noted that the present embodiment does not limit the transmitted service to be an OTN signal, 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 channel is arranged in the protection service disk, and each protection channel corresponds to one of the electrical layer service disks;
according to the configuration information, the alarm processing unit finds the notch position of the electrical layer service disk corresponding to the received alarm information;
and according to the corresponding relation of the service disks, the electrical layer service disk and the protection service disk which are found correspond to each other and the protection access of the electrical layer service disk, and the alarm information is sent to the protection access, so that the protection access carries out protection switching on the optical signals of the corresponding electrical layer service disk according to the received alarm information.
Each protection path in the protection service disk corresponds to only one electrical layer service disk, and one electrical layer service disk may correspond to one or more protection paths, and the one or more protection paths perform protection switching of optical signals.
The number of protection paths in each protection service disk needs to be determined according to the number of electrical layer service disks corresponding to the protection service disk, and generally, the greater the number of electrical layer service disks corresponding to the protection service disk, the greater the number of protection paths.
The method comprises the steps that configuration information of all electric layer service disks and all protection service disks is obtained by an alarm processing unit, after a service disk corresponding relation from a main control board is received, a communication relation with all service disks is established, when the alarm processing unit receives alarm information, the electric layer service disk of a sending source of the alarm information is judged according to the connection relation between the alarm processing unit and all electric layer service disks, then the alarm information is directly sent to a protection access in the corresponding protection service disk according to the corresponding relation between the electric layer service disk, the protection service disk and the protection access, and the protection access carries out protection switching on optical signals of the corresponding electric layer service disk according to the alarm information.
Besides the protection switching of optical signals for the error code information of the electrical layer service disk, the protection service disk can also perform optical signal protection switching according to the optical power information of the protection service disk.
The protection service disk performs protection switching on the optical signal according to the received alarm information, and further includes:
the protection service disk performs protection switching of optical signals according to optical power information received by a dual transmission link of the protection service disk, in addition to protection switching of optical signals according to alarm information received from the electrical layer service disk.
The protection service disk receives or sends optical signals to an opposite terminal through a dual transmission link, the dual transmission link comprises a main link and a standby link and is used for respectively sending the optical signals to a receiving terminal through the main link and the standby link after copying the optical signals, meanwhile, after the protection service disk of the receiving terminal receives the two paths of optical signals, the protection service disk of the receiving terminal screens the two paths of optical signals according to the power of the received optical signals, receives the optical signals with higher quality, and the process of protection switching according to the power of the optical signals is the process of protection switching.
Example 2:
embodiment 2 of the present invention provides a method for implementing optical channel protection through photoelectric linkage, which is presented in a more specific context based on the apparatus for implementing optical channel protection through photoelectric linkage in embodiment 1.
As shown in fig. 4, the method includes:
in step 401, the alarm processing unit obtains configuration information of all electrical layer service disks and all protection service disks.
The electric layer service disk is a board card used for realizing line side wavelength; the protection service disk 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, the electrical layer service disk and the protection service disk is established.
The communication relation refers to the connection relation between the alarm processing unit and each service disk, and the alarm service disk can know the type and model of each service disk connected with the alarm processing unit and the position of the slot in the chassis.
In step 403, the main control board sets a service disk correspondence relationship, and notifies the alarm processing unit, the electrical layer service disk, and the protection service disk.
The service disk corresponding relation is manually set before the electric layer service disk sends the alarm information, the setting of the service disk corresponding relation is automatically set by a person skilled in the art according to the actual condition requirement, and the main control board informs each service disk and the alarm processing unit after the setting is finished.
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 electrical layer service disk.
In step 405, the protection service disk performs protection switching on the optical signal according to the received alarm information.
Acquiring error code information from the electrical layer service disk as alarm information, sending the alarm information to an alarm processing unit for collection, acquiring the electrical 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 electrical layer service disk, wherein the protection service disk correspondingly carries out protection switching of different optical signals according to the error code information in the alarm information.
The main control board obtains the configuration information of all the electric layer service disks and all the protection service disks through the back plate; 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 relation between the electric layer service disks and the protection service disks according to the configuration information;
the main control board is preset with a service disk corresponding relation, before the protection switching is carried out, the main control board sends the service disk corresponding relation to the alarm processing unit and each service disk, and the service disks are used for ensuring that the protection service disks can carry out protection switching of corresponding optical signals according to subsequently received alarm information;
the service disk correspondence specifically includes: one or more of the corresponding relationship between the electrical layer service disk and the protection service disk and the corresponding relationship between the electrical layer service disk and the protection access in the protection service disk.
The slot positions of the electrical layer service disk and the protection service disk can be set arbitrarily; the configuration information includes one or more of a service disk slot position, a service disk type, and a service disk model.
When the device is powered on or plugged with the service disk, the main control board can know the slot position of each service disk and the type of the service disk in each slot position; at the moment, the main control board actively informs the alarm processing unit to establish a communication relation 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 also be ensured, the slot position information of each service disk is obtained from the main control board, and then the communication relationship between the alarm processing unit and each service disk is established according to the slot position information.
The protection service disk 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 electrical layer service disk corresponding to the received alarm information;
and according to the corresponding relation of the service disks, corresponding the electrical layer service disk to a protection service disk and a protection path thereof, and sending the alarm information to the protection path, wherein the protection path performs protection switching on the optical signals of the corresponding electrical layer service disk according to the received alarm information.
The number of protection paths in each protection service disk needs to be determined according to the number of electrical layer service disks corresponding to the protection service disk, and generally, the number of protection paths is increased when the number of electrical layer service disks corresponding to the protection service disk is increased.
The method comprises the steps that configuration information of all electric layer service disks and all protection service disks is obtained by an alarm processing unit, after a service disk corresponding relation from a main control board is received, a communication relation with all service disks is established, when the alarm processing unit receives alarm information, the electric layer service disk of a sending source of the alarm information is judged according to the connection relation between the alarm processing unit and all electric layer service disks, then the alarm information is directly sent to a protection access in the corresponding protection service disk according to the corresponding relation between the electric layer service disk, the protection service disk and the protection access, and the protection access carries out protection switching on optical signals of the corresponding electric layer service disk according to the alarm information.
Besides the protection switching of optical signals for the error code information of the electrical layer service disk, the protection service disk can also perform optical signal protection switching according to the optical power information of the protection service disk.
Example 3:
embodiment 3 of the present invention provides a device for protecting an optical channel through photoelectric linkage, which further shows a process of transmitting and receiving an optical signal by an electrical layer service disk and performing protection switching of the optical signal by a protection service disk according to optical power information, on the basis of embodiments 1 and 2.
As shown in fig. 5, when a first site and a second site receive and transmit optical signals, an optical service channel in the electrical layer service disk is connected to a protection service disk through an optical fiber, and then transmits the optical signals to a receiving end through a dual transmission link of the protection service disk, where the dual transmission link includes a main link and a backup link, and is used to copy the optical signals, and then respectively transmit the optical signals to the receiving end through the main link and the backup link, and meanwhile, after receiving two paths of transmitted optical signals, the protection service disk of the receiving end filters the two paths of optical signals according to the power of the received optical signals, receives the 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 further comprise one or more of a wave combining device and an optical amplifying device; the main link and the standby link of the receiving end further comprise one or more of optical amplification equipment and wavelength division equipment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
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 and a main control board, wherein:
each electrical layer service disk is connected with the alarm processing unit, the alarm processing unit is connected with the protection service disk, 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 the electric layer service disks and all the protection service disks;
the main control board is used for setting the corresponding relation of the service disks and informing the alarm processing unit, the electrical layer service disk and the protection service disk;
the alarm processing unit is used for receiving alarm information from the electrical 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;
and the protection service disk is used for carrying out protection switching on the optical signals according to the received alarm information.
2. The device of claim 1, further comprising: a back sheet, wherein:
the back board is connected with the main control board and the alarm processing unit;
the back plate is in communication connection with all the electric layer service disks and all the protection service disks, and the main control board acquires configuration information of all the electric layer service disks and all the protection service disks through the back plate;
the main control board is used for sending the acquired 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 the corresponding relation between the optical service channel of the electric layer service disk and the protection channel of the single protection disk and informing the alarm processing unit, the electric layer service disk and the protection service disk;
and the alarm processing unit is used for establishing a communication relation between the service disk of the same electric layer and the protection service disk according to the configuration information and the setting information of the master control.
3. The apparatus of claim 2, wherein the configuration information specifically includes one or more of a service disk slot position, a service disk type, and a service disk model.
4. The device of claim 3, wherein the electrical layer service disk comprises: an optical traffic channel and electrical layer control unit, wherein:
each electrical layer service disk is provided with at least 1 optical service channel, the optical service channels are connected with the electrical layer control unit through a third preset number of alarm pins, and each optical service channel comprises at least 1 piece of alarm information;
and the electrical layer control unit is used for receiving and processing the alarm information from the optical service channel through the alarm pin.
5. The device for protecting optical channels through photoelectric linkage according to claim 4, wherein the service disk correspondence specifically includes: one or more of the corresponding relationship between the electrical layer service disk and the protection service disk, the corresponding relationship between the electrical layer service disk and the protection access in the protection service disk, and the corresponding relationship between the optical service channel in the electrical layer service disk and the protection access in the protection service disk.
6. The apparatus of claim 5, wherein at least one protection channel is disposed in the protection service disk, and each protection channel corresponds to one of the electrical layer service disks;
the alarm processing unit is used for determining the notch position of the electrical layer service disk corresponding to the alarm information according to the configuration information;
and the optical service channel of the electrical layer service disk corresponding to the alarm information corresponds to a protection service disk and a protection path thereof according to the corresponding relationship of the service disk, and the alarm information is sent to the protection path, wherein the protection path is used for carrying out protection switching on the optical signal of the corresponding electrical layer service disk according to the received alarm information.
7. The apparatus according to claim 6, wherein the electrical layer control unit is configured to receive and process the alarm information from the optical service channel via the alarm pin, and specifically includes:
the alarm pin is connected with an interrupt pin in the electrical 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.
8. A method for protecting an optical channel by an electro-optical linkage, wherein the method is applied to the apparatus for protecting an optical channel by an electro-optical linkage according to any one of claims 1 to 7, the method comprising:
the alarm processing unit acquires configuration information of all electrical layer service disks and all protection service disks, the main control board sets a service disk corresponding relationship, and informs the alarm processing unit, the electrical layer service disks and the protection service disks;
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 protection service disk performs protection switching on the optical signals according to the received alarm information;
the configuration information specifically includes one or more of a service disk slot position, a service disk type, and a service disk model.
9. The method of claim 8, further comprising:
the main control board is preset with a service disk corresponding relation, before the protection switching is carried out, the main control board sends the service disk corresponding relation to the alarm processing unit and each service disk, and the service disks are used for ensuring that the protection service disks can carry out protection switching of corresponding optical signals according to subsequently received alarm information;
the service disk correspondence specifically includes: one or more of the corresponding relationship between the electrical layer service disk and the protection service disk, the corresponding relationship between the electrical layer service disk and the protection access in the protection service disk, and the corresponding relationship between the optical service channel in the electrical layer service disk and the protection access in the protection service disk.
10. The method according to claim 9, wherein the protection service disk 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 electrical layer service disk corresponding to the alarm information according to the configuration information;
and according to the corresponding relation of the service disks, corresponding the electrical layer service disk corresponding to the alarm information to a protection service disk and a protection path thereof, sending the alarm information to the protection path, and performing protection switching on the optical signals of the corresponding electrical layer service disk by the protection path according to the received alarm information.
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| CN202211045737.6A CN115426552B (en) | 2022-08-30 | 2022-08-30 | Device and method for realizing optical channel protection through photoelectric linkage |
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| CN202211045737.6A CN115426552B (en) | 2022-08-30 | 2022-08-30 | Device and method for realizing optical channel protection through photoelectric linkage |
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