CN107306248B - Optical quantum switch and communication method thereof - Google Patents

Optical quantum switch and communication method thereof Download PDF

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Publication number
CN107306248B
CN107306248B CN201610244218.0A CN201610244218A CN107306248B CN 107306248 B CN107306248 B CN 107306248B CN 201610244218 A CN201610244218 A CN 201610244218A CN 107306248 B CN107306248 B CN 107306248B
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unit
instruction
optical switching
main control
optical
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CN107306248A (en
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梁位成
丁松燕
陈庆
刘建宏
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Quantumctek Guangdong Co ltd
Quantumctek Co Ltd
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Quantumctek Guangdong Co ltd
Quantumctek Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/70—Photonic quantum communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications

Abstract

The embodiment of the invention discloses an optical quantum switch and a communication method thereof, which solve the technical problems of complex deployment and low safety and efficiency caused by the fact that the existing safety protection scheme is generally based on a certain layer of TCP/IP protocol for protection aiming at optical quantum switch equipment at present. An optical quantum switch according to an embodiment of the present invention includes: the optical switching system comprises an optical switching main control unit, an isolation unit, a network management unit and a key management unit; the optical switching main control unit is in communication connection with the isolation unit; the isolation unit is respectively connected with the network management unit and the key management unit in an independent communication way.

Description

Optical quantum switch and communication method thereof
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an optical quantum switch and a communication method thereof.
Background
The current quantum communication technology is a novel technology developed in the last decades and is a product obtained by combining quantum theory and information theory. In the application field, quantum communication technology is currently used for efficient and safe information transmission.
Conventional communication means are generally based on ethernet, using TCP/IP protocol, and their communication convenience is rapidly developed, but there are unavoidable security problems as well.
Currently, security issues have made traditional communications vulnerable. The current application of the quantum communication technology focuses on solving the security problem of traditional communication, and the quantum key is transmitted through quantum theory, so that the key cannot be copied, interception is prevented, and one-time pad function is supported. Networks capable of quantum communication are called quantum networks, which enable the transmission of quantum keys through various characteristics of light.
As shown in fig. 1, an optical quantum switch is responsible for quantum channel switching in a quantum network, the optical quantum switch is controlled by a Key Management Server (KMS), is responsible for quantum channel switching, realizes quantum channel connectivity between Quantum Key Distribution (QKD) devices, and is simultaneously connected with a Network Management Server (NMS), and the NMS remotely monitors the operation state of the devices.
Optical quantum switches are directly related to the generation of quantum keys, and in addition to ensuring their communicability, their security is also ensured.
At present, aiming at optical quantum switch equipment, the existing safety protection scheme is generally based on a certain layer of TCP/IP protocol for protection, and has the technical problems of complex deployment and low safety and efficiency.
Disclosure of Invention
The optical quantum switch and the communication method thereof provided by the embodiment of the invention solve the technical problems of complex deployment and low safety and efficiency caused by the fact that the existing safety protection scheme is based on a certain layer of TCP/IP protocol for protection.
An optical quantum switch provided by an embodiment of the present invention includes:
the optical switching system comprises an optical switching main control unit, an isolation unit, a network management unit and a key management unit;
the optical switching main control unit is in communication connection with the isolation unit;
the isolation unit is respectively connected with the network management unit and the key management unit in an independent communication mode.
Optionally, the optical switching main control unit adopts a singlechip, an ARM, an FPGA or a DSP.
Optionally, the network management unit adopts a singlechip, ARM, FPGA or DSP.
Optionally, the key management unit adopts a singlechip, ARM, FPGA or DSP.
Optionally, the isolation unit adopts a single chip microcomputer, ARM, FPGA or DSP.
Optionally, the connection relationship among the optical switching main control unit, the isolation unit, the network management unit and the key management unit is bus connection.
Alternatively, the bus may be a USB bus, a PCI bus, or a GPMC bus.
Optionally, the isolation unit includes:
the system comprises a bus driving module, a bridging module, a main control data processing module, a network management data processing module and a key management data processing module;
the bus driving module, the bridging module and the main control data processing module are electrically connected in sequence;
the main control data processing module is respectively connected with the network management data processing module and the key management data processing module;
the network management data processing module and the key management data processing module are respectively and correspondingly connected with the network management unit and the key management unit.
Optionally, the isolation unit further includes:
and the reset control module is used for resetting the bus driving module, the bridging module, the main control data processing module, the network management data processing module and the key management data processing module according to the acquired reset signal sent by the optical switching main control unit.
Optionally, the bridge module and the bus driving module are respectively connected between the network management data processing module and the network management unit, and between the key management data processing module and the key management unit in sequence.
Optionally, the isolation unit further includes:
the device comprises a serial port driving module, an isolation unit data interface module and an isolation unit control data analysis module;
the isolation unit control data analysis module is used for analyzing the control signals sent by the optical switching main control unit through the serial ports according to a preset optical switching protocol, if the control signals accord with the protocol format, the control signals are forwarded to the corresponding control modules to execute corresponding operations, and response data are formed into data frames according to the corresponding format and sequentially sent to the optical switching main control unit through the isolation unit data interface module and the serial port driving module.
Optionally, the key management unit is configured to receive a quantum channel switching instruction issued by a KMS system through a network, forward the quantum channel switching instruction to the isolation unit, and receive a response instruction sent by the isolation unit, and return the response instruction to the KMS system;
the isolation unit is used for judging whether the quantum channel switching instruction accords with the format of a preset optical switching protocol or not, if not, recording an error instruction, if so, forwarding the quantum channel switching instruction to the optical switching main control unit for processing, judging whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, recording the error instruction, and if so, transmitting the response instruction to the key management unit.
Optionally, the network management unit is configured to receive a status query instruction issued by an NMS system through a network, forward the status query instruction to the isolation unit, and receive a response instruction sent by the isolation unit, and return the response instruction to the NMS system;
the isolation unit is used for judging whether the state query instruction accords with the format of the preset optical switching protocol or not, if not, recording an error instruction, if so, forwarding the state query instruction to the optical switching main control unit for processing, judging whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, recording the error instruction, and if so, transmitting the response instruction to the network management unit.
Optionally, the isolation unit is configured to report abnormal information to the optical switching main control unit when abnormal message interaction is detected, and meanwhile, a hardware isolation and control instruction is reserved, where the optical switching main control unit determines that the number of times of reporting the abnormal message by the isolation unit is more than a limit, and directly cuts off the isolation unit through a serial port or hardware, so that the optical switching main control unit is separated from an external network.
The communication method of the optical quantum switch provided by the embodiment of the invention comprises the following steps:
the key management unit receives a quantum channel switching instruction issued by the KMS through a network and forwards the quantum channel switching instruction to the isolation unit;
the isolation unit judges whether the quantum channel switching instruction accords with the format of a preset optical switching protocol or not, if not, the isolation unit records an error instruction, if so, the quantum channel switching instruction is forwarded to the optical switching main control unit for processing, and judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, the isolation unit records the error instruction, and if so, the response instruction is transmitted to the key management unit;
and the key management unit receives the response instruction sent by the isolation unit and returns the response instruction to the KMS.
The communication method of the optical quantum switch provided by the embodiment of the invention comprises the following steps:
the network management unit receives a state inquiry instruction issued by the NMS system through a network and forwards the state inquiry instruction to the isolation unit;
the isolation unit judges whether the state inquiry instruction accords with the format of a preset optical switching protocol or not, if not, the isolation unit records an error instruction, if so, the state inquiry instruction is forwarded to the optical switching main control unit for processing, and judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, the isolation unit records the error instruction, and if so, the response instruction is transmitted to the network management unit;
the network management unit receives the response instruction sent by the isolation unit and returns the response instruction to the NMS system.
From the above technical solutions, the embodiment of the present invention has the following advantages:
the embodiment of the invention provides an optical quantum switch and a communication method thereof, wherein the optical quantum switch comprises: the optical switching system comprises an optical switching main control unit, an isolation unit, a network management unit and a key management unit; the optical switching main control unit is in communication connection with the isolation unit; the isolation unit is respectively connected with the network management unit and the key management unit in an independent communication way. In this embodiment, the isolation unit is separately connected with the network management unit and the key management unit in an independent communication manner, and adopts an external communication key point isolation manner to isolate external network management and key management communication functions, so that the network is isolated into an interior and an exterior, and the processing efficiency is also ensured on the basis of ensuring high security, thereby solving the technical problems of complex deployment and low security and efficiency caused by the fact that the existing security protection scheme is generally based on a certain layer of the TCP/IP protocol for protecting the optical quantum switch equipment at present.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a prior art schematic;
fig. 2 is a schematic structural diagram of an embodiment of an optical quantum switch according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another embodiment of an optical quantum switch according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of an embodiment of a communication method of an optical quantum switch according to an embodiment of the present invention;
fig. 5 is a flow chart of an embodiment of a communication method of another optical quantum switch according to an embodiment of the present invention;
fig. 6 is an illustration of the application of fig. 2.
Detailed Description
The optical quantum switch and the communication method thereof provided by the embodiment of the invention solve the technical problems of complex deployment and low safety and efficiency caused by the fact that the existing safety protection scheme is generally based on a certain layer of TCP/IP protocol for protection aiming at optical quantum switch equipment at present.
KMS, key Management Server, key management server.
NMS, network Management Server, network management server.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2, an embodiment of an optical quantum switch according to the present invention includes:
the optical switching system comprises an optical switching main control unit 1, an isolation unit 2, a network management unit 3 and a key management unit 4;
the optical switching main control unit 1 is in communication connection with the isolation unit 2;
the isolation unit 2 is respectively connected with the network management unit 3 and the key management unit 4 in an independent communication way.
In this embodiment, the isolation unit 2 is separately connected with the network management unit 3 and the key management unit 4 in an independent communication manner, and adopts an external communication key point isolation manner to isolate external network management and key management communication functions, so that the network is isolated into an internal part and an external part, and the processing efficiency is also ensured on the basis of ensuring high security, thereby solving the technical problems of complex deployment and low security and efficiency caused by the protection of a certain layer based on the TCP/IP protocol in the existing security protection scheme.
Referring to fig. 3, another embodiment of an optical quantum switch according to an embodiment of the present invention includes:
the optical switching system comprises an optical switching main control unit 1, an isolation unit 2, a network management unit 3 and a key management unit 4;
the optical switching main control unit 1 is in communication connection with the isolation unit 2;
the isolation unit 2 is respectively connected with the network management unit 3 and the key management unit 4 in an independent communication way.
The optical exchange main control unit 1, the isolation unit 2, the network management unit 3 and the key management unit 4 can be realized by programmable chips such as a singlechip and ARM, FPGA, DSP.
The connection relationship among the optical exchange main control unit 1, the isolation unit 2, the network management unit 3 and the key management unit 4 is bus connection. The bus may be USB, PCI, GPMC or the like. The isolation unit 2 includes:
the device comprises a bus driving module 21, a bridging module 22, a main control data processing module 23, a network management data processing module 24 and a key management data processing module 25;
the bus driving module 21, the bridging module 22 and the main control data processing module 23 are electrically connected in sequence;
the main control data processing module 23 is respectively connected with the network management data processing module 24 and the key management data processing module 25;
the network management data processing module 24 and the key management data processing module 25 are respectively connected with the network management unit 3 and the key management unit 4 correspondingly.
Further, the isolation unit 2 further includes:
the reset control module 26 is configured to reset the bus driving module 21, the bridge module 22, the master control data processing module 23, the network management data processing module 24, and the key management data processing module 25 according to the acquired reset signal sent by the optical switching master control unit 1.
Further, a bridge module and a bus driving module are respectively connected between the network management data processing module 24 and the network management unit 3, and between the key management data processing module 25 and the key management unit 4 in sequence.
Further, the isolation unit 2 further includes:
a serial port driving module 27, an isolation unit data interface module 28 and an isolation unit control data analyzing module 29;
the isolation unit control data parsing module 29 is configured to parse control signals (e.g. a reset signal, a status query signal, etc.) sent by the optical switching main control unit 1 through the serial port according to a preset optical switching protocol, and if the control signals conform to the protocol format, forward the control signals to the corresponding control modules to perform corresponding operations (e.g. forward the reset signal to the reset control module 26 to perform the reset operation), and send the response data to the optical switching main control unit 1 sequentially through the isolation unit data interface module 28 and the serial port driving module 27 according to the data frame formed by the corresponding format.
As described above, the optical switching main control unit 1 can monitor the operation state of the isolation unit 2 through the serial port, and when the bus abnormality occurs between the isolation unit 2 and the optical switching main control unit 1, the network management unit 3, and the key management unit 4, and the communication cannot be performed, the optical switching main control unit 1 can reset the isolation unit 2 through the serial port, so as to improve the operation stability of the optical quantum switch.
Further, the key management unit 4 is configured to receive a quantum channel switching instruction issued by the KMS system through a network, forward the quantum channel switching instruction to the isolation unit 2, receive a response instruction sent by the isolation unit 2, and return the response instruction to the KMS system;
the isolation unit 2 is configured to determine whether the quantum channel switching instruction accords with the format of the preset optical switching protocol, if not, record an error instruction, if so, forward the quantum channel switching instruction to the optical switching main control unit 1 for processing, and determine whether the obtained response instruction returned by the optical switching main control unit 1 accords with the format of the preset optical switching protocol, if not, record the error instruction, and if so, transmit the response instruction to the key management unit 4.
Further, the network management unit 3 is configured to receive a status query instruction issued by the NMS system through the network, forward the status query instruction to the isolation unit 2, receive a response instruction sent by the isolation unit 2, and return the response instruction to the NMS system;
the isolation unit 2 is configured to determine whether the status query instruction conforms to the format of the preset optical switching protocol, if not, record an error instruction, if yes, forward the status query instruction to the optical switching main control unit 1 for processing, and determine whether the acquired response instruction returned by the optical switching main control unit 1 conforms to the format of the preset optical switching protocol, if not, record the error instruction, and if yes, transmit the response instruction to the network management unit 3.
Further, the isolation unit 2 is configured to receive the alarm instruction sent by the optical switching main control unit 1, determine whether the alarm instruction accords with a format of a preset optical switching protocol, if not, record an error instruction, and if so, transmit the alarm instruction to the network management unit 3;
and the network management unit 3 is used for sending the alarm instruction to the NMS system through the network.
Further, the isolation unit 2 is configured to report abnormal information to the optical switching main control unit 1 when abnormal message interaction is detected, and meanwhile, a hardware isolation and control instruction is reserved, where the optical switching main control unit 1 determines that the number of times that the isolation unit 2 reports abnormal messages is more than a limit, and directly cuts off the isolation unit 2 through a serial port or hardware, so that the optical switching main control unit 1 is separated from an external network.
In this embodiment, the isolation unit 2 is separately connected with the network management unit 3 and the key management unit 4 in an independent communication manner, and adopts an external communication key point isolation manner to isolate external network management and key management communication functions, so that the network is isolated into an interior and an exterior, and the processing efficiency is also ensured on the basis of ensuring high security, thereby solving the technical problems that the existing security protection scheme is generally based on a certain layer of the TCP/IP protocol for protection, resulting in complex deployment and low security and efficiency for the optical quantum switch equipment at present.
Referring to fig. 4, an embodiment of a communication method of an optical quantum switch according to an embodiment of the present invention includes:
401. the key management unit receives a quantum channel switching instruction issued by the KMS through a network and forwards the quantum channel switching instruction to the isolation unit;
in this embodiment, when the device needs to communicate with the KMS system, the key management unit first receives, through the network, a quantum channel switching instruction issued by the KMS system, and forwards the quantum channel switching instruction to the isolation unit.
402. The isolation unit judges whether the quantum channel switching instruction accords with the format of the preset optical switching protocol, if not, the step 403 is executed, and if so, the step 404 is executed;
when the key management unit receives the quantum channel switching instruction issued by the KMS system through the network and forwards the quantum channel switching instruction to the isolation unit, the isolation unit judges whether the quantum channel switching instruction accords with the format of the preset optical switching protocol, if not, step 403 is executed, and if so, step 404 is executed.
403. Recording error instructions;
and when the isolation unit judges whether the quantum channel switching instruction accords with the format of the preset optical switching protocol or not, or judges whether the response instruction returned by the acquired optical switching main control unit accords with the format of the preset optical switching protocol or not, recording an error instruction.
404. Forwarding the quantum channel switching instruction to the optical switching main control unit for processing, judging whether the acquired response instruction returned by the optical switching main control unit accords with the format of a preset optical switching protocol, if not, executing step 403, and if so, executing step 405;
when the isolation unit judges whether the quantum channel switching instruction accords with the format of the preset optical switching protocol, the quantum channel switching instruction is forwarded to the optical switching main control unit for processing, and judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol, if not, the step 403 is executed, and if so, the step 405 is executed.
405. Transmitting the response instruction to the key management unit;
and when the obtained response instruction returned by the optical switching main control unit is judged to be in accordance with the format of the preset optical switching protocol, transmitting the response instruction to the key management unit.
406. And the key management unit receives the response instruction sent by the isolation unit and returns the response instruction to the KMS.
After the isolation unit transmits the response instruction to the key management unit, the key management unit receives the response instruction sent by the isolation unit and returns the response instruction to the KMS.
As shown in fig. 2, a specific application scenario is described below. In this embodiment, the optical switching main control unit 1, the network management unit 3 and the key management unit 4 all adopt ARM chips, which correspond to the optical switching main control ARM, the network management interface ARM and the key management interface ARM in fig. 6 respectively; the isolation unit 2 is implemented by an FPGA, i.e. the isolation FPGA in fig. 6;
GPMC parallel buses are adopted between the three ARM and the FPGA.
The quantum channel switching flow is as follows:
firstly, a KMS issues a quantum channel switching instruction according to specific service, and the instruction reaches a key management interface ARM of an optical quantum switch through a network;
the key management interface ARM forwards the instruction to the isolation FPGA through the GPMC parallel bus;
the isolation FPGA judges the received instruction, judges whether the received instruction accords with a protocol format, if not, records the number of times of error instructions, and if so, forwards the error instructions to the optical switching main control ARM;
the optical switching main control ARM processes the instruction sent by the isolation FPGA, returns a processing result to the isolation FPGA, and the isolation FPGA also judges the format, and only the instruction conforming to the protocol format can return to the key management interface ARM;
and the key management interface ARM returns the response instruction received from the isolated FPGA to the KMS, so that the basic control flow is ended.
The communication bridge between the three ARM consists of a parallel data bus, namely a GPMC bus and a high-performance data processing unit, namely an FPGA, so that the high efficiency of internal communication interaction can be ensured.
As shown in fig. 6, the optical quantum switch communicates with the outside following definitions:
1) The optical quantum exchanger is communicated with an external network only through two interfaces ARM;
2) Three ARM are connected with the isolation FPGA through GPMC parallel buses, and the whole communication interaction speed can be ensured based on the parallel buses and the high-speed FPGA;
3) The internal communication uses a custom communication protocol, and after the isolation FPGA receives the message, the message is analyzed according to a protocol format, for example, the message which is not in accordance with the protocol, such as message missing, checking error, length error and the like, is found to be discarded;
4) The isolation FPGA can report abnormal information to the optical switching main control ARM when a large number of abnormal message interactions are detected, meanwhile, the isolation FPGA reserves hardware isolation and control instructions, and when the optical switching main control ARM judges that the times of reporting abnormal messages by the isolation FPGA is more than a limit, the isolation FPGA is directly cut off through a serial port or hardware, so that the optical switching main control ARM is separated from an external network.
The custom communication protocol generally includes fields such as a frame header, a message, a frame checksum, a frame tail, etc., and specific contents thereof can be set correspondingly by those skilled in the art according to actual needs, which are not described herein.
Referring to fig. 5, an embodiment of a communication method of another optical quantum switch according to the present invention includes:
501. the network management unit receives a state query instruction issued by the NMS system through a network and forwards the state query instruction to the isolation unit;
in this embodiment, when the device needs to communicate with the NMS system, the network management unit first receives a status query instruction issued by the NMS system through the network, and forwards the status query instruction to the isolation unit.
502. The isolation unit judges whether the state query instruction accords with the format of the preset optical switching protocol, if not, the step 503 is executed, and if so, the step 504 is executed;
after the network management unit receives the status query instruction issued by the NMS system through the network and forwards the status query instruction to the isolation unit, the isolation unit determines whether the status query instruction conforms to the format of the preset optical switching protocol, if not, step 503 is executed, and if so, step 504 is executed.
503. Recording error instructions;
and when the judgment of whether the state inquiry instruction accords with the format of the preset optical switching protocol is not met, or the judgment of whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol is not met, recording an error instruction.
504. The isolation unit forwards the state query instruction to the optical switching main control unit for processing, judges whether the acquired response instruction returned by the optical switching main control unit accords with the format of a preset optical switching protocol, if not, executes step 503, and if so, executes step 505;
when the judgment of whether the state query instruction accords with the format of the preset optical switching protocol is met, the isolation unit forwards the state query instruction to the optical switching main control unit for processing, judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol, if not, the step 503 is executed, and if so, the step 505 is executed.
505. The isolation unit transmits a response instruction to the network management unit;
and when the isolation unit judges whether the acquired response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, transmitting the response instruction to the network management unit.
506. The network management unit receives the response instruction sent by the isolation unit and returns the response instruction to the NMS system.
After the isolation unit transmits the response instruction to the network management unit, the network management unit receives the response instruction sent by the isolation unit and returns the response instruction to the NMS system.
It should be noted that, the steps 501 to 506 may also be implemented with reference to the foregoing application examples, and are not described in detail herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (17)

1. An optical quantum switch, comprising:
the optical switching system comprises an optical switching main control unit, an isolation unit, a network management unit and a key management unit;
the optical switching main control unit is in communication connection with the isolation unit;
the isolation unit is respectively connected with the network management unit and the key management unit in an independent communication way;
the isolation unit is used for judging whether the quantum channel switching instruction accords with the format of a preset optical switching protocol or not, if not, recording an error instruction, if so, forwarding the quantum channel switching instruction to the optical switching main control unit for processing, judging whether the acquired response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, recording the error instruction, and if so, transmitting the response instruction to the key management unit;
the isolation unit is further configured to determine whether the state query instruction conforms to a format of a preset optical switching protocol, if not, record an error instruction, if so, forward the state query instruction to the optical switching main control unit for processing, and determine whether the obtained response instruction returned by the optical switching main control unit conforms to the format of the preset optical switching protocol, if not, record the error instruction, and if so, transmit the response instruction to the network management unit.
2. The optical quantum switch of claim 1, wherein the optical switching master control unit is a single-chip microcomputer, an ARM, an FPGA, or a DSP.
3. The optical quantum switch of claim 1, wherein the network management unit is a single-chip microcomputer, an ARM, an FPGA, or a DSP.
4. The optical quantum switch of claim 1, wherein the key management unit is a single-chip microcomputer, ARM, FPGA, or DSP.
5. The optical quantum switch of claim 1, wherein the isolation unit is a single-chip microcomputer, an ARM, an FPGA, or a DSP.
6. The optical quantum switch of claim 1, wherein the connection relationship among the optical switching master unit, the isolation unit, the network management unit, and the key management unit is a bus connection.
7. The optical quantum switch of claim 6, wherein the bus is a USB bus, a PCI bus, or a GPMC bus.
8. The optical quantum switch of claim 1, wherein the isolation unit comprises:
the system comprises a bus driving module, a bridging module, a main control data processing module, a network management data processing module and a key management data processing module;
the bus driving module, the bridging module and the main control data processing module are electrically connected in sequence;
the main control data processing module is respectively connected with the network management data processing module and the key management data processing module;
the network management data processing module and the key management data processing module are respectively and correspondingly connected with the network management unit and the key management unit.
9. The optical quantum switch of claim 8, wherein the isolation unit further comprises:
and the reset control module is used for resetting the bus driving module, the bridging module, the main control data processing module, the network management data processing module and the key management data processing module according to the acquired reset signal sent by the optical switching main control unit.
10. The optical quantum switch of claim 8, wherein the bridge module and the bus driving module are further connected between the network management data processing module and the network management unit, and between the key management data processing module and the key management unit, respectively.
11. The optical quantum switch of claim 8, wherein the isolation unit further comprises:
the device comprises a serial port driving module, an isolation unit data interface module and an isolation unit control data analysis module;
the isolation unit control data analysis module is used for analyzing the control signals sent by the optical switching main control unit through the serial ports according to a preset optical switching protocol, if the control signals accord with the protocol format, the control signals are forwarded to the corresponding control modules to execute corresponding operations, and response data are formed into data frames according to the corresponding format and sequentially sent to the optical switching main control unit through the isolation unit data interface module and the serial port driving module.
12. The optical quantum switch according to any one of claims 1 to 11, wherein the key management unit is configured to receive the quantum channel switching instruction issued by the KMS system through a network, forward the quantum channel switching instruction to the isolation unit, and receive a response instruction sent by the isolation unit, and return the response instruction to the KMS system.
13. The optical quantum switch of claim 12, wherein the optical quantum switch is configured to,
the isolation unit is used for reporting abnormal information to the optical switching main control unit when abnormal message interaction is detected, meanwhile, hardware isolation and control instructions are reserved, and when the optical switching main control unit judges that the times of reporting the abnormal message by the isolation unit is more than a limit, the isolation unit is directly cut off through a serial port or hardware, so that the optical switching main control unit is separated from an external network.
14. An optical quantum switch according to any one of claims 1 to 11, wherein the network management unit is configured to receive the status query instruction issued by the NMS system through a network, forward the status query instruction to the isolation unit, and receive a response instruction sent by the isolation unit, and return the response instruction to the NMS system.
15. The optical quantum switch of claim 14, wherein the optical quantum switch is configured to,
the isolation unit is used for reporting abnormal information to the optical switching main control unit when abnormal message interaction is detected, meanwhile, hardware isolation and control instructions are reserved, and when the optical switching main control unit judges that the times of reporting the abnormal message by the isolation unit is more than a limit, the isolation unit is directly cut off through a serial port or hardware, so that the optical switching main control unit is separated from an external network.
16. A method of communication for an optical quantum switch, comprising:
the key management unit receives a quantum channel switching instruction issued by the KMS through a network and forwards the quantum channel switching instruction to the isolation unit;
the isolation unit judges whether the quantum channel switching instruction accords with the format of a preset optical switching protocol or not, if not, the isolation unit records an error instruction, if so, the quantum channel switching instruction is forwarded to the optical switching main control unit for processing, and judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, the isolation unit records the error instruction, and if so, the response instruction is transmitted to the key management unit;
and the key management unit receives the response instruction sent by the isolation unit and returns the response instruction to the KMS.
17. A method of communication for an optical quantum switch, comprising:
the network management unit receives a state inquiry instruction issued by the NMS system through a network and forwards the state inquiry instruction to the isolation unit;
the isolation unit judges whether the state inquiry instruction accords with the format of a preset optical switching protocol or not, if not, the isolation unit records an error instruction, if so, the state inquiry instruction is forwarded to the optical switching main control unit for processing, and judges whether the obtained response instruction returned by the optical switching main control unit accords with the format of the preset optical switching protocol or not, if not, the isolation unit records the error instruction, and if so, the response instruction is transmitted to the network management unit;
the network management unit receives the response instruction sent by the isolation unit and returns the response instruction to the NMS system.
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