CN114745362A - Remote upgrading method and system based on optical fiber time service - Google Patents
Remote upgrading method and system based on optical fiber time service Download PDFInfo
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- CN114745362A CN114745362A CN202210301532.3A CN202210301532A CN114745362A CN 114745362 A CN114745362 A CN 114745362A CN 202210301532 A CN202210301532 A CN 202210301532A CN 114745362 A CN114745362 A CN 114745362A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4416—Network booting; Remote initial program loading [RIPL]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
Abstract
The invention discloses a remote upgrading system based on optical fiber time service, which comprises local end equipment and a plurality of remote end equipment, wherein the local end equipment and the remote end equipment are communicated through an optical fiber link, the optical fiber link comprises a time service channel and a data transmission channel, the time service channel is used for transmitting time service information, and the data transmission channel is used for transmitting an upgrading data packet; the local end equipment comprises: a first controller, the remote end device comprising: the system comprises a main controller, a standby controller and a time keeping module. The remote upgrading system based on the optical fiber time service realizes the remote upgrading of the time service equipment through the optical fiber link, avoids technical personnel from entering a machine room to replace board card equipment, improves the version updating safety and the updating efficiency, and simultaneously avoids unnecessary risks caused by time service interruption; in addition, the remote end equipment carries out version upgrading operation through the cooperation of the main controller and the standby controller, and further improves the efficiency and the safety of version upgrading.
Description
Technical Field
The invention belongs to the field of optical fiber time service, and particularly relates to a remote upgrading method and system based on optical fiber time service.
Background
The high-precision time frequency has important application value in the fields of basic physics, earth science, space science, navigation positioning, aerospace, military safety and the like, the current mainstream remote precise time frequency transmission technology comprises satellite time frequency transmission, optical fiber time frequency transmission and laser time transmission, the optical fiber time service is more and more widely applied to the aspect of high-precision time transmission with the advantages of high time service precision, stable transmission, large bandwidth, strong anti-interference capability, low-loss transmission and the like, and the optical fiber time service technology can be better compatible with an optical fiber communication system.
However, in the optical fiber transmission system, time transmission needs to be realized through communication between the local end and the remote end, and during the operation of the system, the version of the time service system also needs to be updated continuously to meet the safety requirement and the system operation requirement. However, the existing time service system equipment is generally installed in a machine room, so that a plurality of stations of the machine room are provided, and if the equipment is frequently updated, inconvenience is brought when the equipment enters the machine room for a plurality of times. In addition, some users need to update programs when using the system, and need technicians to take out the board card and download version program updates to the board card through special equipment. Due to the fact that the operation of inserting and extracting the card is needed, a large safety risk is brought when updating is conducted, and the risk that the system is broken down due to updating failure exists.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a remote upgrading method and system based on optical fiber time grant. The technical problem to be solved by the invention is realized by the following technical scheme:
a remote upgrading system based on optical fiber time service comprises local end equipment and a plurality of remote end equipment, wherein the local end equipment and the remote end equipment are communicated through an optical fiber link, the optical fiber link comprises a time service channel and a data transmission channel, the time service channel is used for transmitting time service information, and the data transmission channel is used for transmitting an upgrading data packet;
the local end equipment comprises:
the first controller is used for sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration;
when the upgrading confirmation message is received, judging whether the MAC address has upgrading authority, if so, sending an upgrading data packet to a corresponding communication port;
the remote end device includes:
the main controller is used for receiving an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller; feeding back an upgrade confirm message to the first controller in response to receiving the MAC address and the communication port number, wherein the upgrade confirm message includes the MAC address and the communication port number of the standby controller;
the standby controller is used for sending switching information to the first controller and the time keeping module when upgrading is completed, so that the first controller stops sending time service data to the main controller during switching, and sends time service data to the standby controller after switching is completed;
the time keeping module is used for locally keeping time by adopting a high voltage-stabilizing crystal control oscillator and a phase-locked loop in the switching period, stopping locally keeping time after switching is completed, and synchronously tracking the time of the first controller at the local end.
In a specific embodiment, the upgrade request message further includes an upgrade content identifier; in a corresponding manner, the light-emitting diode is provided with a light-emitting diode,
and the main controller is used for detecting the number of the decryption modules to determine that the hardware condition meets the requirement and then upgrading the software when judging that the upgrade content identifier is the key authority upgrade.
In a specific embodiment, the main controller is further configured to obtain an upgrade data packet from the standby controller for upgrading after the switching is completed, and close a timing channel with the first controller after the upgrading is completed.
In a specific embodiment, the first controller sends an upgrade request message through a time service signal frame, where the time service signal frame includes a time service field and an upgrade request field, and the upgrade request field includes an upgrade request message;
correspondingly, when the main controller receives the time service signal frame, the time service operation is carried out when the upgrading request field is judged to be empty, and the upgrading operation is carried out when the upgrading request field is judged to include the upgrading request message.
The invention also provides a remote upgrading method based on optical fiber time service, which is applied to a local end and comprises the following steps:
sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration, and the remote end device comprises a main controller and a standby controller;
and when an upgrade confirmation message sent by the remote end equipment is received, judging whether the MAC address of the remote end equipment has an upgrade authority, and if so, sending an upgrade data packet to a corresponding communication port.
And when the switching information is received, stopping sending the time service data to the main controller, and sending the time service data to the standby controller after the upgrading time length is exceeded.
The invention also provides a remote upgrading method based on optical fiber time service, which is applied to a remote end, wherein the remote end comprises a main controller, a standby controller and a timekeeping module; the method comprises the following steps:
the main controller receives an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller;
in response to receiving the MAC address and the communication port number, upgrading a confirmation message to a local end device, wherein the upgrading confirmation message comprises the MAC address and the communication port number of the standby controller;
when the upgrade is completed, the standby controller sends switching information to the local end equipment and the timekeeping module, so that the local end equipment stops sending time service data to the main controller during the switching period, and sends the time service data to the standby controller after the switching is completed;
during the switching period, a timekeeping module consisting of a high voltage-stabilizing crystal control oscillator and a phase-locked loop is adopted for carrying out local timekeeping, the local timekeeping is stopped after the switching is finished, and time synchronization tracking is carried out on a first controller at the local end.
In a specific embodiment, the upgrade request message further includes an upgrade content identifier; in a corresponding manner, the light-emitting diode is provided with a light-emitting diode,
and when the main controller judges that the upgrade content identifier is the key authority upgrade, detecting the number of the decryption modules to determine that the hardware condition meets the requirement, and then upgrading.
In a specific embodiment, after the switching is completed, the main controller acquires an upgrade data packet from the standby controller for upgrading, and closes a time service channel with the local end after the upgrading is completed.
The invention has the beneficial effects that:
the remote upgrading system based on the optical fiber time service realizes the remote upgrading of the time service equipment through the optical fiber link, avoids technical personnel from entering a machine room to replace board card equipment, improves the version updating safety and the updating efficiency, and simultaneously avoids unnecessary risks caused by time service interruption; in addition, the remote equipment carries out version upgrading operation through the cooperation of the main controller and the standby controller, and further improves the efficiency and the safety of version upgrading.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of a remote upgrading system module based on optical fiber time service according to an embodiment of the present invention;
fig. 2 is a frame structure of local end transmission data when a remote upgrade system based on optical fiber time service is upgraded according to an embodiment of the present invention;
fig. 3 is a schematic local end flow diagram of a remote upgrading method based on optical fiber time service according to an embodiment of the present invention;
fig. 4 is a schematic flow diagram of a remote end of a remote upgrading method based on optical fiber time service according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example one
Referring to fig. 1, fig. 1 is a schematic diagram of a remote upgrade system module based on optical fiber time service according to an embodiment of the present invention, including a local device and a plurality of remote devices, where the local device and the remote devices communicate with each other through an optical fiber link, where the optical fiber link includes a time service channel and a data transmission channel, the time service channel is used to transmit time service information, and the data transmission channel is used to transmit an upgrade data packet;
the local end device of the embodiment is a service end for providing time service data, the local end transmits information such as a 10MHz signal, a 1PPS signal, a UTC time code, bidirectional comparison result data and the like to the remote end device through a time service channel, the remote end can be normally used after time update is carried out according to the information, generally, data transmission is carried out through an optical fiber link, and because the existing time service technology generally only carries out time service information transmission through an optical fiber, a data transmission channel does not exist, in the embodiment, for safely and efficiently transmitting version data, an upgrade data packet for version update is transmitted through the optical fiber link; since the additional data transmission is performed using the original optical fiber link, the transmission can be performed in a time division multiplexing manner. It should be noted that, during normal authorization, the frame structure includes the device address of the remote end, 1PPS signal, comparison data, UTC time code information, and 10MHz carrier signal, and the length of each frame signal is 10ms, where the first 100 μ s includes the device address, 1PPS signal, comparison data, and time code information, and the remaining 9.9ms is 10MHz carrier signal. The remote end equipment of each site can continuously receive the frame signals sent by the local end equipment and analyze the frame signals through the internal decoder. The 10MHz carrier signal is used for an internal time keeping module, so that the remote end equipment has good time keeping capability. In this embodiment, please refer to fig. 2 when transmitting the upgrade data packet, a frame structure of the upgrade data packet includes a device address of a remote end, a 1PPS signal, comparison data, UTC time code information, a 10MHz carrier signal, and an upgrade data packet signal, in order to leave more space for installing the data packet, a length of each frame signal is changed to 1s, where the first 1ms includes the device address, the 1PPS signal, the comparison data, the time code information, and the 10MHz carrier signal, and the upgrade data packet is unpacked and transmitted in a time division multiplexing manner.
The local end equipment comprises:
the first controller is used for sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration;
the local end generally needs to give time to different remote ends, the requirements of the different remote ends are different, and the corresponding versions are also different, so when the local end has a new version, the local end needs to send the new version to each remote end, the remote end judges whether to update the version, correspondingly, the upgrade request message needs to carry the current version number and the pre-upgrade version number so as to be convenient for the remote end to judge, and in addition, when the different versions are upgraded and switched, the time spent is different from tens of minutes to hours. When the version is updated, the remote end equipment can not accurately give time in the upgrading switching process, only a clock signal with lower precision can be provided through the timekeeping module, if the remote end equipment is working under a high-precision scene or is about to be in the high-precision scene at the moment, the time service requirement can not be met during upgrading switching, and therefore the remote end can conveniently judge whether the remote end is suitable for upgrading currently or not by sending upgrading time length data. For example, if the upgrade time is 1 hour, and the remote end performs experiments such as gravitational wave test after 5 minutes, and a high-precision time is required, it is not suitable for the upgrade.
When the upgrading confirmation message is received, judging whether the MAC address has upgrading authority, if so, sending an upgrading data packet to a corresponding communication port;
when the first controller receives the upgrade confirmation message, it indicates that the remote end has the upgrade condition and the link is in an open state, and at this time, it needs to further determine whether the MAC address provided by the remote end has the upgrade permission. Because the remote end performs switching operation on the main equipment and the standby equipment, and the provided MAC address is a standby equipment address and has no direct interaction with the first controller, data transmission can be performed only after identification, it should be noted that when the main equipment and the standby equipment of the remote end are started, the MAC address is recorded in a list of the first controller, and the list records the upgrade authority corresponding to each MAC, so that judgment is facilitated.
The remote end device includes:
the main controller is used for receiving an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller;
the standby controller is temporarily not required to operate while the primary controller is taught, at which point the standby controller is in an off or dormant state until awakened. And the main controller sends an opening command to the standby controller to wake up due to the satisfaction of the upgrading condition, and the standby controller is convenient to subsequently receive the upgrading data packet by acquiring the MAC address and the communication port number of the standby controller.
If the current version number and the pre-upgrade version number meet the requirements but the upgrade duration does not meet the upgrade requirements, a delayed upgrade message is sent to the first controller, when the first controller receives the delayed upgrade message, the address of the main controller is recorded, and upgrade request messages are continuously sent to the equipment at intervals of 2 hours until the upgrade is completed, or when the main controller meets the upgrade conditions, a pre-upgrade request is sent to the first controller, so that the first controller sends the upgrade request message to the main controller.
Feeding back an upgrade confirm message to the first controller in response to receiving the MAC address and the communication port number, wherein the upgrade confirm message includes the MAC address and the communication port number of the standby controller;
and the main controller feeds back an upgrade confirmation message to the first controller after receiving the MAC address and the communication port number, which indicates that the preparation work is ready and the upgrade can be carried out.
The standby controller is used for sending switching information to the first controller and the timekeeping module when upgrading is completed so that the first controller stops sending time service data to the main controller during switching, and sends time service data to the standby controller after switching is completed;
the standby controller can automatically perform upgrading operation after receiving the upgrading data packet, at the moment, the main controller still performs time service data interaction with the local end, time service is not interrupted, after the standby controller is upgraded, the standby controller is shown to have the condition of interaction with the local end, the upgraded standby controller adopts an updated version to interact with the local end, after initial interaction is completed, the standby controller can replace the main controller to work as a new main controller, and then time service continues to be performed normally. In the period of performing the main-standby switching, because the time service operation of the standard time cannot be performed, the time service is performed through the time keeping module, the high voltage stabilization crystal oscillator and the phase-locked loop are used for performing local time keeping in the switching period, and the local time keeping is stopped after the switching is completed, and the synchronous tracking of the standard time from the local end is performed. Specifically, a time keeping module composed of a crystal oscillator and a phase-locked loop is used for carrying out local time keeping by taking the last received time service signal as a reference. It should be noted that, in the local time keeping process, the accuracy of time keeping is lower as the time lasts longer, so in a high-accuracy scenario, if the upgrade duration is determined to be too long, the delayed upgrade message may be sent. After the standby controller sends the switching information to the first controller, the first controller stops sending the time service data to the main controller, and after the standby controller sends the switching information to the time keeping module, the time keeping module temporarily keeps the time service data to carry out the time service task.
In a specific embodiment, the upgrade request message further includes an upgrade content identifier; in a corresponding manner, the light-emitting diode is provided with a light-emitting diode,
and the main controller is used for detecting the number of the decryption modules to determine that the hardware condition meets the requirement and then upgrading the software when judging that the upgrade content identifier is the key authority upgrade.
In order to further optimize the upgrading process, an upgrade content identifier is added in the embodiment, the upgrade content represents content used for representing an upgrade version, and it should be noted that, because part of the time service data has an encryption requirement, it is required to preferentially determine whether the decryption module is installed in place for the situation of upgrading the encryption version, and if the decryption module is not installed or does not meet the requirement of upgrading the version, the situation that the data cannot be analyzed or the corresponding effect cannot be achieved after upgrading can be forced.
Because the precision of the comparison data determines the precision of the time which can be obtained by the remote end, the comparison data is encrypted according to the time service precision requirement, so that the remote end can only decrypt the corresponding field, and the safety of the data is ensured. Generally, the precision requirement of the civil equipment is us level, higher level requirement can reach ns and ps level, and the remote end can only decrypt data bits with corresponding precision by encrypting comparison data. For decryption at ns and ps levels, the decryption can be realized only by adding a corresponding decryption module, for example, only us level is supported before upgrading, if the authority required by the upgraded version is ns level, the decryption module with the corresponding number of ns levels can decrypt, if the authority is not satisfied, the upgrade is not performed until the condition is detected to be satisfied. Preferably, when the upgrade content identifier is a key right for upgrade, the upgrade content identifier further includes a model of the decryption module, so that the main controller determines whether the model of the decryption module is consistent with the model in the upgrade content identifier.
In a specific embodiment, the main controller is further configured to obtain an upgrade data packet from the standby controller for upgrading after the switching is completed, and close a timing channel with the first controller after the upgrading is completed. After the standby controller is upgraded, the version of the main controller is still the old version, so that the standby controller needs to acquire an upgrade data packet for upgrading, and the versions of the main controller and the standby controller are the same, so that the version of the main controller meets the upgrade requirement in the next upgrade. Meanwhile, the two main controllers are main controllers and standby controllers, and can be switched when one chip fails, so that the time service equipment cannot work normally.
In a specific embodiment, the first controller sends an upgrade request message through a time service signal frame, where the time service signal frame includes a time service field and an upgrade request field, and the upgrade request field includes an upgrade request message;
correspondingly, when the main controller receives the time service signal frame, the time service operation is carried out when the upgrading request field is judged to be empty, and the upgrading operation is carried out when the upgrading request field is judged to include the upgrading request message.
Referring to fig. 3, the present invention also provides a remote upgrade method based on optical fiber time service, applied to a local end, including:
s21, sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration, and the remote end device comprises a main controller and a standby controller;
and S22, when the upgrade confirmation message sent by the remote end equipment is received, judging whether the MAC address of the remote end equipment has the upgrade authority, and if so, sending an upgrade data packet to the corresponding communication port.
And S23, in response to receiving the switching information, stopping sending the time service data to the main controller, and after the switching is completed, sending the time service data to the standby controller.
Referring to fig. 4, the present invention also provides a remote upgrade method based on optical fiber time service, which is applied to a remote end, where the remote end includes a main controller, a standby controller, and a time keeping module; the method comprises the following steps:
the main controller receives an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller;
in response to receiving the MAC address and the communication port number, upgrading a confirmation message to a local end device, wherein the upgrading confirmation message comprises the MAC address and the communication port number of the standby controller;
when the upgrade is completed, the standby controller sends switching information to the local end equipment and the timekeeping module, so that the local end equipment stops sending time service data to the main controller during the switching period, and sends the time service data to the standby controller after the switching is completed;
the time keeping module carries out local time keeping during the switching period, and stops the local time keeping after the switching is finished, and carries out synchronous tracking of the local standard time.
In a specific embodiment, the upgrade request message further includes an upgrade content identifier; in a corresponding manner, the light-emitting diode is provided with a light-emitting diode,
and when the main controller judges that the upgrade content identifier is the key authority upgrade, detecting the number of the decryption modules to determine that the hardware condition meets the requirement, and then upgrading.
In a specific embodiment, after the switching is completed, the main controller acquires an upgrade data packet from the standby controller for upgrading, and closes a time service channel with the local end after the upgrading is completed.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus (device), or computer program product. Accordingly, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects that may all generally be referred to herein as a "module" or "system. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. A computer program is stored/distributed on a suitable medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions may be made without departing from the spirit of the invention, which should be construed as belonging to the scope of the invention.
Claims (8)
1. A remote upgrading system based on optical fiber time service is characterized by comprising local end equipment and a plurality of remote end equipment, wherein the local end equipment and the remote end equipment are communicated through an optical fiber link, the optical fiber link comprises a time service channel and a data transmission channel, the time service channel is used for transmitting time service information, and the data transmission channel is used for transmitting an upgrading data packet;
the local end equipment comprises:
the first controller is used for sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration;
when the upgrading confirmation message is received, judging whether the MAC address has upgrading authority, if so, sending an upgrading data packet to a corresponding communication port;
the remote end device includes:
the main controller is used for receiving an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller;
feeding back an upgrade confirm message to the first controller in response to receiving the MAC address and the communication port number, wherein the upgrade confirm message includes the MAC address and the communication port number of the standby controller;
the standby controller is used for sending switching information to the first controller and the timekeeping module when upgrading is completed so that the first controller stops sending time service data to the main controller during switching, and sends the time service data to the standby controller after switching is completed;
the time keeping module is used for locally keeping time by adopting a high voltage-stabilizing crystal control oscillator and a phase-locked loop in the switching period, stopping locally keeping time after switching is completed, and performing time synchronization tracking on a first controller at a local end.
2. The optical fiber time service-based remote upgrading system according to claim 1, wherein the upgrading request message further includes an upgrading content identifier; accordingly, the method can be used for solving the problems that,
and the main controller is used for detecting the number of the decryption modules to determine that the hardware condition meets the requirement and then upgrading the software when judging that the upgrade content identifier is the key authority upgrade.
3. The optical fiber time service-based remote upgrading system of claim 1, wherein the main controller is further configured to obtain an upgrade data packet from the standby controller for upgrading after the switching is completed, and close the time service channel with the first controller after the upgrading is completed.
4. The optical fiber time service-based remote upgrading system according to claim 1,
the first controller sends an upgrading request message through a time service signal frame, wherein the time service signal frame comprises a time service field and an upgrading request field, and the upgrading request field comprises an upgrading request message;
correspondingly, when the main controller receives the time service signal frame, the time service operation is carried out when the upgrading request field is judged to be empty, and the upgrading operation is carried out when the upgrading request field is judged to include the upgrading request message.
5. A remote upgrading method based on optical fiber time service is applied to a local end and is characterized by comprising the following steps:
sending an upgrade request message to each remote end device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and upgrade duration, and the remote end device comprises a main controller and a standby controller;
and when an upgrade confirmation message sent by the remote end equipment is received, judging whether the MAC address of the remote end equipment has an upgrade authority, and if so, sending an upgrade data packet to a corresponding communication port.
And stopping sending the time service data to the main controller when the switching information is received, and sending the time service data to the standby controller after the switching is completed.
6. A remote upgrading method based on optical fiber time service is applied to a remote end and is characterized in that the remote end comprises a main controller, a standby controller and a time keeping module; the method comprises the following steps:
the main controller receives an upgrading request message;
when judging that the current version number, the pre-upgrade version number and the upgrade duration all meet the upgrade requirement, sending an opening command to the standby controller to acquire an MAC address and a communication port number of the standby controller;
in response to receiving the MAC address and the communication port number, upgrading a confirmation message to a local end device, wherein the upgrading confirmation message comprises the MAC address and the communication port number of the standby controller;
when the upgrade is completed, the standby controller sends switching information to the local end equipment and the timekeeping module, so that the local end equipment stops sending time service data to the main controller during the switching period, and sends the time service data to the standby controller after the switching is completed;
during the switching period, a timekeeping module consisting of a high voltage-stabilizing crystal control oscillator and a phase-locked loop is adopted for local timekeeping, the local timekeeping is stopped after the switching is finished, and time synchronization tracking is carried out on a first controller at a local end.
7. The optical fiber time service-based remote upgrading method according to claim 6, wherein the upgrading request message further includes an upgrading content identifier; accordingly, the method can be used for solving the problems that,
and when the main controller judges that the upgrade content identifier is the key authority to be upgraded, detecting the number of the decryption modules to determine that the hardware condition meets the requirement and then upgrading.
8. The remote upgrading method based on optical fiber time service of claim 6, wherein after the switching is completed, the main controller obtains the upgrading data packet from the standby controller for upgrading, and closes the time service channel with the local end after the upgrading is completed.
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