CN114745362B - A remote upgrade method and system based on optical fiber timing - Google Patents

Abstract

The application 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 side device comprises: a first controller, the remote end device comprising: the system comprises a main controller, a standby controller and a timekeeping 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 technicians from entering a machine room to replace board card equipment, improves version updating safety and updating efficiency, and avoids unnecessary risks caused by time service interruption; in addition, the remote terminal equipment performs version upgrading operation through the cooperation of the main controller and the standby controller, so that the efficiency and the safety of version upgrading are further improved.

Description

A remote upgrade method and system based on optical fiber timing

technical field

The invention belongs to the field of optical fiber timing, in particular to a remote upgrade method and system based on optical fiber timing.

Background technique

High-precision time-frequency has important application value in the fields of basic physics, earth science, space science, navigation and positioning, aerospace and military security. The current mainstream long-distance precision time-frequency transmission technologies include satellite time-frequency transmission and optical fiber time-frequency transmission. And laser time transmission, optical fiber timing is more and more widely used in high-precision time transmission due to its advantages of high timing accuracy, stable transmission, large bandwidth, strong anti-interference ability, and low-loss transmission, and optical fiber timing technology can be better Compatible with fiber optic communication systems.

However, in the optical fiber transmission system, the time transfer needs to be realized through the communication between the local end and the remote end. During the operation of the system, the version of the timing system also needs to be continuously updated to meet the safety requirements and system operation requirements. However, the current timing system equipment is generally installed in the computer room, and there are many stations in the computer room. If it is updated frequently, it will be inconvenient to enter the computer room multiple times. In addition, some users need to update the program during use, requiring technicians to take out the board and download the version program update to the board through a dedicated device. Due to the need to insert and remove the card, the update will also bring a greater security risk, and there is also a risk of system paralysis due to update failure.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a remote upgrade method and system based on optical fiber timing. The technical problem to be solved in the present invention is realized through the following technical solutions:

A remote upgrade system based on optical fiber timing, including a local end device and a number of remote end devices, the local end device and remote end devices communicate through an optical fiber link, the optical fiber link includes a timing channel and a data transmission channel, the The timing channel is used to transmit timing information, and the data transmission channel is used to transmit upgrade data packets;

The local equipment includes:

The first controller is configured to send an upgrade request message to each of the remote end devices, wherein the upgrade request message includes a current version number, a pre-upgrade version number, and an upgrade duration;

In response to receiving the upgrade confirmation message, it is judged whether the MAC address has the upgrade authority, and if so, the upgrade data packet is sent to the corresponding communication port;

The remote end equipment includes:

The main controller is used to receive the upgrade request message;

When judging that the current version number, pre-upgrade version number, and upgrade duration all meet the upgrade requirements, send an open command to the standby controller to obtain the MAC address and communication port number of the standby controller; in response to receiving the MAC address and the communication port number; Port number, feeding back an upgrade confirmation message to the first controller, wherein the upgrade confirmation message includes the MAC address and communication port number of the standby controller;

The standby controller is configured to send switching information to the first controller and the timing module when the upgrade is completed, so that the first controller stops sending timing data to the main controller during the switching period, and After completion, send timing data to the standby controller;

The time-keeping module is used to use a high-voltage-controlled crystal oscillator and a phase-locked loop for local time-keeping during the switching period, and stops the local time-keeping after the switching is completed, and performs time-synchronous tracking on the first controller at the local end.

In a specific implementation manner, the upgrade request message also includes an upgrade content identifier; correspondingly,

When the main controller is used to judge that the upgrade content is identified as an upgrade of the secret key authority, it detects the number of decryption modules to determine that the hardware conditions meet the requirements before upgrading.

In a specific embodiment, the master controller is further configured to obtain an upgrade data packet from the standby controller for upgrade after the switch is completed, and close the timing channel with the first controller after the upgrade is completed.

In a specific embodiment, the first controller sends an upgrade request message through a timing signal frame, wherein the timing signal frame includes a timing field and an upgrade request field, and the upgrade request field includes an upgrade request message;

Correspondingly, when the main controller receives the timing signal frame, it judges that the upgrade request field is empty, and performs a timing operation, and when it judges that the upgrade request field includes an upgrade request message, performs an upgrade operation.

The present invention also provides a remote upgrade method based on optical fiber timing, which is applied to the local end, including:

Send an upgrade request message to each of the remote end devices, wherein the upgrade request message includes a current version number, a pre-upgrade version number, and an upgrade duration, and the remote end device includes a master controller and a standby controller;

In response to receiving the upgrade confirmation message sent by the remote end device, it is judged whether the MAC address of the remote end device has the upgrade authority, and if so, the upgrade data packet is sent to the corresponding communication port.

And, in response to receiving the switching information, stop sending the timing data to the main controller, and after exceeding the upgrade duration, send the timing data to the standby controller.

The present invention also provides a remote upgrade method based on optical fiber timing, which is applied to the remote end, and the remote end includes a main controller, a backup controller and a timekeeping module; the method includes:

The main controller receives the upgrade request message;

When judging that the current version number, pre-upgrade version number, and upgrade duration all meet the upgrade requirements, send an open command to the standby controller to obtain the MAC address and communication port number of the standby controller;

In response to receiving the MAC address and the communication port number, upgrade a confirmation message to the local device, wherein the upgrade confirmation message includes the MAC address and the communication port number of the backup controller;

When the upgrade is completed, the standby controller sends switching information to the local device and the timing module, so that the local device stops sending timing data to the master controller during the switching period, and sends timing data to the standby controller after the switching is completed ;

During the switching period, the timekeeping module composed of a high-voltage-controlled crystal oscillator and a phase-locked loop is used for local timekeeping, and after the switching is completed, the local timekeeping is stopped, and the first controller at the local end is tracked synchronously.

In a specific implementation manner, the upgrade request message also includes an upgrade content identifier; correspondingly,

When the main controller judges that the upgrade content is identified as an upgrade of the secret key authority, it detects the number of decryption modules to determine that the hardware conditions meet the requirements before upgrading.

In a specific embodiment, after the switching is completed, the master controller obtains the upgrade data packet from the standby controller to upgrade, and closes the timing channel with the local end after the upgrade is completed.

Beneficial effects of the present invention:

The remote upgrade system based on optical fiber timing of the present invention realizes remote upgrading of timing equipment through optical fiber links, avoids technicians entering the computer room to replace board equipment, improves version update security and update efficiency, and avoids unnecessary interruption of timing at the same time In addition, the remote terminal device of the present invention performs a version upgrade operation through the cooperation of the main controller and the standby controller, which further improves the efficiency and safety of the version update.

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a kind of remote upgrading system module schematic diagram based on optical fiber timing provided by the embodiment of the present invention;

Fig. 2 is the frame structure of the local terminal transmission data when a kind of remote upgrade system based on optical fiber timing service is upgraded provided by the embodiment of the invention;

Fig. 3 is a kind of remote upgrade method local end schematic diagram based on optical fiber timing provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of a remote end-to-end process flow of a remote upgrade method based on optical fiber timing provided by an embodiment of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

Embodiment one

Please refer to Figure 1. Figure 1 is a schematic diagram of a remote upgrade system module based on optical fiber timing provided by an embodiment of the present invention, including a local end device and a number of remote end devices, and the local end device and remote end devices are implemented through optical fiber links. For communication, the optical fiber link includes a timing channel and a data transmission channel, the timing channel is used to transmit timing information, and the data transmission channel is used to transmit upgrade data packets;

The local device in this embodiment is a server that provides timing data. The local device transmits information such as 10MHz signals, 1PPS signals, UTC time codes, and two-way comparison result data to the remote device through the timing channel, and the remote device performs timing based on this. It can be used normally after updating. Generally, data transmission is performed through optical fiber links. Since the existing timing technology generally only transmits timing information through optical fibers, there is no data transmission channel. In order to transmit version data safely and efficiently in this embodiment, The upgrade data package for the version update is transmitted simultaneously through the optical fiber link; since the additional data transmission is performed using the original optical fiber link, it can be transmitted in a time-division multiplexed manner. It should be noted that during normal timing, the frame structure includes the device address of the remote end, 1PPS signal, comparison data, UTC time code information, 10MHz carrier signal, and the length of each frame signal is 10ms, of which the first 100μs contains the device address , 1PPS signal, comparison data and timely code information, the remaining 9.9ms is 10MHz carrier signal. The remote end equipment at each site can continuously receive the frame signal sent by the local end equipment and analyze it through the internal decoder. Among them, the 10MHz carrier signal is used for the internal timing module, so that the remote end equipment has good timing capability. In this embodiment, please refer to Fig. 2 when performing the upgrade data packet transmission, its frame structure includes, the device address of the remote end, 1PPS signal, comparison data, UTC time code information, 10MHz carrier signal and upgrade data packet signal, in order to install The data packet leaves more space, and the length of each frame signal becomes 1s, of which the first 1ms contains the device address, 1PPS signal, comparison data, time code information and 10MHz carrier signal, and the data will be upgraded in the form of time division multiplexing Packets are unpacked for transmission.

The local equipment includes:

The first controller is configured to send an upgrade request message to each of the remote end devices, wherein the upgrade request message includes a current version number, a pre-upgrade version number, and an upgrade duration;

Since the local end generally needs to provide time service to different remote ends, the requirements of different remote ends are different, and the corresponding versions will also be different. Therefore, when there is a new version on the local end, it needs to be sent to each remote end, and the remote end determines whether to carry out Version update. Correspondingly, the upgrade request message needs to carry the current version number and the pre-upgrade version number, so that the remote end can judge. In addition, when different versions are upgraded and switched, the time spent is different, ranging from tens of minutes to between hours. When the version is updated, the remote device cannot provide accurate timing during the upgrade and switching process, and can only provide a clock signal with a lower precision through the timing module. If the remote device is working in a high-precision scene or is about to In a high-precision scenario, the timing requirements cannot be met during upgrade switching. Therefore, it is necessary to send upgrade duration data to facilitate the remote end to judge whether the current upgrade is suitable. For example, the upgrade time is 1 hour, but the remote end will carry out experiments such as gravitational wave test after 5 minutes, which requires high-precision time, so it is not suitable to upgrade at this time.

In response to receiving the upgrade confirmation message, it is judged whether the MAC address has the upgrade authority, and if so, the upgrade data packet is sent to the corresponding communication port;

When the first controller received the upgrade confirmation message, it indicated that the remote end possessed the upgrade condition, and the link was in an open state. At this moment, it is necessary to further judge whether the MAC address provided by the remote end has the upgrade authority. Since the remote end switches between the main and standby devices, and the MAC address provided is the address of the backup device, and has no direct interaction with the first controller, it needs to be identified before data can be sent. It should be noted that the remote end’s When the active and standby devices are enabled, their MAC addresses are recorded in the list of the first controller, and the list records the upgrade authority corresponding to each MAC, which is convenient for judgment.

The remote end equipment includes:

The main controller is used to receive the upgrade request message;

When judging that the current version number, pre-upgrade version number, and upgrade duration all meet the upgrade requirements, send an open command to the standby controller to obtain the MAC address and communication port number of the standby controller;

When the main controller is timing, the standby controller does not need to operate temporarily, and the standby controller is in the shutdown or sleep state until it is woken up. Since the upgrade condition is met, the main controller sends an opening command to the standby controller to wake up, and obtains the MAC address and communication port number of the standby controller to facilitate subsequent reception of upgrade packets.

If the current version number and pre-upgrade version number meet the requirements, but the upgrade time does not meet the upgrade requirements, send a delayed upgrade message to the first controller, and when the first controller receives the delayed upgrade message, record the address of the main controller, Continue to send an upgrade request message to the device every 2 hours until the upgrade is complete, or when the main controller meets the upgrade conditions, it sends a pre-upgrade upgrade request to the first controller, so that the first controller sends an upgrade request message to the master controller.

In response to receiving the MAC address and the communication port number, feeding back an upgrade confirmation message to the first controller, wherein the upgrade confirmation message includes the MAC address and the communication port number of the backup controller;

After the main controller receives the MAC address and the communication port number, it feeds back an upgrade confirmation message to the first controller, indicating that the preparations are ready and the upgrade can be performed.

The standby controller is configured to send switching information to the first controller and the timing module when the upgrade is completed, so that the first controller stops sending timing data to the main controller during the switching period, and After completion, send timing data to the standby controller;

After the backup controller receives the upgrade data package, it can perform the upgrade operation by itself. At this time, the master controller still interacts with the local terminal to ensure that the time service is not interrupted. After the upgrade of the backup controller is completed, it indicates that the backup controller It has the conditions to interact with the local side. At this time, the upgraded standby controller uses the updated version to interact with the local side. After the initial interaction is completed, the standby controller can replace the main controller and work as the new main controller. After that Timing continues as normal. During the master-standby switchover, since the timing operation of the standard time cannot be performed, the timekeeping module is used for timekeeping. During the switchover, the high-voltage crystal oscillator and the phase-locked loop are used for local timekeeping, and the local timekeeping is stopped after the switchover is completed. , to perform synchronous tracking of the standard time from the local end. In this embodiment, it can be considered that if the stability index of the time-keeping module composed of the high-voltage crystal oscillator and the phase-locked loop is better than the 3E-10@1day index, then It is considered that the crystal oscillator is a high-voltage regulated crystal oscillator. Specifically, the timing module composed of a crystal oscillator and a phase-locked loop is used, and the last received timing signal is used as a reference for local timing. It should be noted that in the local time keeping process, the longer the time lasts, the lower the time keeping accuracy. Therefore, in a high-precision scenario, if the upgrade time is judged to be too long, a delayed upgrade message can be sent. After the backup controller sends the switching information to the first controller, the first controller stops sending timing data to the main controller, and after the backup controller sends the switching information to the timing module, the timing module temporarily maintains and performs timing tasks.

In a specific implementation manner, the upgrade request message also includes an upgrade content identifier; correspondingly,

When the main controller is used to judge that the upgrade content is identified as an upgrade of the secret key authority, it detects the number of decryption modules to determine that the hardware conditions meet the requirements before upgrading.

In order to further optimize the upgrade process, this embodiment adds an upgrade content identifier. The upgrade content indicates the content used to represent the upgrade version. It should be noted that, since some timing data has encryption requirements, it is necessary to prioritize judgment when upgrading the encrypted version. Whether the decryption module is installed in place, if the decryption module is not installed, or the decryption module does not meet the requirements of the upgraded version, the forced upgrade may cause the data to be unable to be parsed or the corresponding effect cannot be achieved after the upgrade.

Since the accuracy of the comparison data determines the accuracy of the time that the remote end can obtain, the comparison data is encrypted according to the timing accuracy requirements, so that the remote end can only decrypt the corresponding fields, thereby ensuring data security. Generally, the accuracy requirement of civil equipment is us level, and the higher level requirement can reach ns, ps level, and the data is encrypted by comparison, so that the remote end can only decrypt the data bits corresponding to the accuracy. For the decryption of ns and ps levels, one needs to add the corresponding decryption module to realize it. For example, only the us level is supported before the upgrade. If the upgraded version requires the permission of the ns level, at this time, there should be a corresponding number of decryption modules of the ns level. It can only be decrypted. If it is not satisfied, it will not be upgraded until it is detected that the condition is met. Preferably, when the upgrade content identification is the key authority upgrade, the upgrade content identification also includes the model of the decryption module, so that the main controller can judge whether the model of the decryption module is consistent with the model in the upgrade content identification.

In a specific embodiment, the master controller is further configured to obtain an upgrade data packet from the standby controller for upgrade after the switch is completed, and close the timing channel with the first controller after the upgrade is completed. After the upgrade of the standby controller is completed, the version of the main controller is still the old version, so it is necessary to obtain the upgrade data package from the standby controller to upgrade, so that the two versions are the same, so that the version of the main controller meets the upgrade requirements in the next upgrade. At the same time, the two active and standby controllers are active and standby for each other. When a chip fails, it can be switched without causing the timing device to fail to work normally.

In a specific embodiment, the first controller sends an upgrade request message through a timing signal frame, wherein the timing signal frame includes a timing field and an upgrade request field, and the upgrade request field includes an upgrade request message;

Correspondingly, when the main controller receives the timing signal frame, it judges that the upgrade request field is empty, and performs a timing operation, and when it judges that the upgrade request field includes an upgrade request message, performs an upgrade operation.

Please refer to Fig. 3, the present invention simultaneously provides a kind of remote upgrade method based on optical fiber timing, applied to the local end, including:

S21. Send an upgrade request message to each of the remote end devices, wherein the upgrade request message includes a current version number, a pre-upgrade version number, and an upgrade duration, and the remote end device includes a master controller and a backup controller;

S22. In response to receiving the upgrade confirmation message sent by the remote device, determine whether the MAC address of the remote device has the upgrade authority, and if so, send the upgrade packet to the corresponding communication port.

S23. Stop sending timing data to the master controller in response to receiving the switching information, and send timing data to the standby controller after the switching is completed.

Please refer to Fig. 4, the present invention provides a kind of remote upgrading method based on optical fiber time service simultaneously, is applied to remote end, and described remote end comprises main controller, standby controller and time keeping module; The method comprises:

The main controller receives the upgrade request message;

When judging that the current version number, pre-upgrade version number, and upgrade duration all meet the upgrade requirements, send an open command to the standby controller to obtain the MAC address and communication port number of the standby controller;

In response to receiving the MAC address and the communication port number, upgrade a confirmation message to the local device, wherein the upgrade confirmation message includes 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 device and the timing module, so that the local device stops sending timing data to the master controller during the switching period, and sends timing data to the standby controller after the switching is completed ;

The timekeeping module performs local timekeeping during the switching period, and stops the local timekeeping after the switching is completed, and performs synchronous tracking of the local standard time.

In a specific implementation manner, the upgrade request message also includes an upgrade content identifier; correspondingly,

When the main controller judges that the upgrade content is identified as an upgrade of the secret key authority, it detects the number of decryption modules to determine that the hardware conditions meet the requirements before upgrading.

In a specific embodiment, after the switching is completed, the master controller obtains the upgrade data packet from the standby controller to upgrade, and closes the timing channel with the local end after the upgrade is completed.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the present application has been described in conjunction with various embodiments here, however, in the process of implementing the claimed application, those skilled in the art can understand and Other variations of the disclosed embodiments are implemented. In the claims, the word "comprising" does not exclude other elements or steps, and "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 these measures cannot be combined to advantage.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, devices (devices), or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects, all of which are collectively referred to herein as "modules" or "systems." 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, etc.) having computer-usable program code embodied therein. The computer program is stored/distributed on suitable media, supplied with or as part of other hardware, and may also take other forms of distribution, such as via the Internet or other wired or wireless telecommunication systems.

The present application is described with reference to the flowcharts and/or block diagrams of the methods, apparatuses (devices) and computer program products of the embodiments of the present application. It should be understood that each process and/or block in the flowchart and/or block diagrams, and a combination of processes and/or blocks in the flowchart and/or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, whereby the The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can also be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (8)

1. The remote upgrading system based on the 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 side device comprises:

the first controller is used for sending an upgrade request message to each remote terminal device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and an upgrade duration;

judging whether the MAC address has upgrading authority or not in response to receiving the upgrading confirmation message, and if so, sending an upgrading data packet to a corresponding communication port;

the remote end device includes:

the main controller is used for receiving the upgrade request message;

when judging that the current version number, the pre-upgrading version number and the upgrading time length all meet the upgrading requirements, sending an opening command to the standby controller to acquire the MAC address and the communication port number of the standby controller;

in response to receiving the MAC address and the communication port number, feeding back an upgrade confirmation message to the first controller, wherein the upgrade confirmation message includes a MAC address and a communication port number of a standby controller;

the standby controller is used for sending switching information to the first controller and the timekeeping module when the upgrading is finished, 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 the switching is finished;

the time keeping module is used for carrying out local time keeping by adopting the high-voltage-stabilizing crystal oscillator and the phase-locked loop during switching, stopping local time keeping after switching is finished, and carrying out time synchronization tracking on a first controller of a local terminal.

2. The fiber time based remote upgrade system according to claim 1, wherein the upgrade request message further comprises an upgrade content identification; in a corresponding manner,

and the main controller is used for detecting the number of decryption modules to determine that the hardware condition meets the requirement and then upgrading the hardware condition when judging that the upgrading content identifier is the key authority upgrading.

3. The remote upgrade system according to claim 1, wherein the main controller is further configured to obtain an upgrade data packet from the standby controller for upgrade after the handover is completed, and close the time service channel with the first controller after the upgrade is completed.

4. The remote upgrade system based on fiber optic time service according to claim 1, wherein,

the first controller sends an upgrade request message through a time service signal frame, wherein the time service signal frame comprises a time service field and an upgrade request field, and the upgrade request field comprises an upgrade request message;

correspondingly, when the master controller receives the time service signal frame, judging that the upgrading request field is empty, performing time service operation, and when judging that the upgrading request field comprises the upgrading request message, performing upgrading operation.

5. The remote upgrading method based on the optical fiber time service is characterized by being applied to the remote upgrading system based on the optical fiber time service as claimed in claim 1, wherein the local side method comprises the following steps:

transmitting an upgrade request message to each remote terminal device, wherein the upgrade request message comprises a current version number, a pre-upgrade version number and an upgrade duration, and the remote terminal device comprises a main controller and a standby controller;

judging whether the MAC address of the remote terminal equipment has upgrading authority or not when receiving the upgrading confirmation message sent by the remote terminal equipment, and if so, sending an upgrading data packet to a corresponding communication port;

and stopping sending the time service data to the main controller in response to receiving the switching information, and sending the time service data to the standby controller after the switching is completed.

6. The remote upgrading method based on the optical fiber time service is characterized by being applied to the remote upgrading system based on the optical fiber time service as claimed in claim 1, wherein the remote terminal comprises a main controller, a standby controller and a timekeeping module; the remote end method comprises the following steps:

the main controller receives the upgrade request message;

when judging that the current version number, the pre-upgrading version number and the upgrading time length all meet the upgrading requirements, sending an opening command to the standby controller to acquire the MAC address and the communication port number of the standby controller;

in response to receiving the MAC address and the communication port number, upgrading an acknowledgment message to the local end device, wherein the upgrade acknowledgment message includes the MAC address and the communication port number of the standby controller;

when the upgrading is finished, the standby controller sends switching information to the local terminal equipment and the timekeeping module, so that the local terminal equipment stops sending time service data to the main controller during switching, and sends the time service data to the standby controller after the switching is finished;

and during the switching period, a time keeping module formed by the high-voltage-stabilizing crystal oscillator and the phase-locked loop is adopted for local time keeping, the local time keeping is stopped after the switching is finished, and the first controller of the local terminal is subjected to time synchronization tracking.

7. The method for remote upgrade based on fiber optic time service according to claim 6, wherein the upgrade request message further comprises an upgrade content identification; in a corresponding manner,

and when the main controller judges that the upgrading content mark is the key authority upgrading, detecting the number of decryption modules to determine that the hardware condition meets the requirement, and upgrading.

8. The remote upgrading method based on fiber time service according to claim 6, wherein after the switching is completed, the main controller obtains an upgrading data packet from the standby controller to upgrade, and closes a time service channel with the local terminal after the upgrading is completed.