CN114726467B - Synchronous monitoring method and device, time server and downstream time server - Google Patents
Synchronous monitoring method and device, time server and downstream time server Download PDFInfo
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- H—ELECTRICITY
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- 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
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
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- 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
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- 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
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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Abstract
The application provides a synchronous monitoring method, a synchronous monitoring device, a time server and a downstream time server, wherein the method comprises the following steps: the time server maintains a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system; acquiring a first deviation value between the first type of time reference and the second type of time reference; reporting first alarm information to a management system when the first deviation value is larger than a first threshold value, wherein the first alarm information is used for indicating that the first deviation value is out of limit; according to the embodiment of the application, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference formed by the upstream maintained by the time server and the time reference formed by the GNSS satellite system, so that the reliability of a plurality of time references of the time server is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for synchronous monitoring, a time server, and a downstream time server.
Background
The satellite receiver may receive timing signals of a global navigation satellite system (Global Navigation Satellite System, GNSS) and calculate a time of the satellite system. However, the time of the individual satellite systems is not uniform, typically with a gap on the order of tens of nanoseconds (ns), e.g., greater than 20ns, and is not fixed. When different time synchronization devices receive different satellite system times, an absolute error of tens of nanoseconds of a time source is caused, and the accuracy requirement of 30ns of the time synchronization devices in the 5G network cannot be met.
The multimode satellite receiver may selectively receive one satellite system signal as the primary and the remaining satellite system signals as the back-up.
Satellite common view principle: as shown in fig. 1, (a) setting a as a co-view master station, B as a slave station, and observing the same GPS satellite by receivers placed at the two stations at the same time; (b) Measuring the time difference between the A station receiver and the GNSS system time at the A station, and measuring the time difference between the B station receiver and the GNSS system time at the B station; (c) And subtracting the two time difference values to obtain the time difference between the station A and the station B, and completing time service.
In the prior art, the time synchronization device can only output the acquired satellite system time, and when different time synchronization devices receive different satellite system times, a time synchronization error is caused, and the error is in the order of tens of ns. In the prior art, a corresponding synchronous monitoring and early warning scheme does not exist.
Disclosure of Invention
The embodiment of the application aims to provide a synchronous monitoring method, a synchronous monitoring device, a time server and a downstream time server, so as to solve the problem that a synchronous monitoring and early warning scheme aiming at a satellite common view system does not exist in the prior art.
In order to solve the above-mentioned problems, an embodiment of the present application provides a synchronization monitoring method, which is executed by a time server, including:
the time server maintains a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
acquiring a first deviation value between the first type of time reference and the second type of time reference;
and under the condition that the first deviation value is larger than a first threshold value, reporting first alarm information to a management system, wherein the first alarm information is used for indicating that the first deviation value is out of limit.
Wherein the method further comprises:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
Wherein the method further comprises:
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
Wherein the time server maintains a plurality of time references locally, the method further comprising:
the time server synchronizes with the upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and the time server synchronizes with satellite system time according to the received satellite timing signals to obtain second-type time references synchronized with each satellite system.
The embodiment of the application also provides a synchronous monitoring method which is executed by the downstream time server and comprises the following steps:
receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
determining each time reference maintained by the time server according to the second clock difference information;
acquiring a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
and if the third deviation value is larger than a third threshold value, reporting third alarm information to a management system, wherein the third alarm information is used for indicating that the third deviation value is out of limit.
Wherein the method further comprises:
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
The embodiment of the application also provides a synchronous monitoring device which is applied to the time server and comprises the following components:
a maintenance module for locally maintaining a plurality of time references; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
a first acquisition module, configured to acquire a first deviation value between the first type of time reference and the second type of time reference;
and the first alarm module is used for reporting first alarm information to the management system under the condition that the first deviation value is larger than a first threshold value, and the first alarm information is used for indicating that the first deviation value is out of limit.
The embodiment of the application also provides a time server, which comprises a processor and a transceiver, wherein the transceiver is used for receiving and transmitting data under the control of the processor, and the processor is used for executing the following operations:
maintaining a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
acquiring a first deviation value between the first type of time reference and the second type of time reference;
and under the condition that the first deviation value is larger than a first threshold value, reporting first alarm information to a management system, wherein the first alarm information is used for indicating that the first deviation value is out of limit.
Wherein the processor is further configured to perform the following operations:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
Wherein the processor is further configured to perform the following operations:
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
Wherein the processor is further configured to perform the following operations:
synchronizing with an upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and synchronizing with satellite system time according to the received satellite timing signals to obtain a second type time reference synchronized with each satellite system.
The embodiment of the application also provides a synchronous monitoring device which is applied to the downstream time server and comprises the following components:
the first receiving module is used for receiving each time reference and second clock difference information of the observed satellite, which are sent by the time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
the reference determining module is used for determining each time reference maintained by the time server according to the second clock difference information;
the deviation acquisition module is used for acquiring a third deviation value between each time reference maintained by the time server and the time reference maintained locally by the downstream time server;
and the third alarm module is used for reporting third alarm information to the management system when the third deviation value is larger than a third threshold value, and the third alarm information is used for indicating that the third deviation value is out of limit.
The embodiment of the application also provides a downstream time server, which comprises a processor and a transceiver, wherein the transceiver is used for receiving and transmitting data under the control of the processor, and the processor is used for executing the following operations:
receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
determining each time reference maintained by the time server according to the second clock difference information;
acquiring a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
and if the third deviation value is larger than a third threshold value, reporting third alarm information to a management system, wherein the third alarm information is used for indicating that the third deviation value is out of limit.
Wherein the processor is further configured to perform the following operations:
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
The embodiment of the application also provides communication equipment, which comprises a memory, a processor and a program stored in the memory and capable of running on the processor, wherein the processor realizes the synchronous monitoring method when executing the program.
The embodiment of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in the synchronization monitoring method as described above.
The technical scheme of the application has at least the following beneficial effects:
in the synchronization monitoring method, the device, the time server and the downstream time server, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference formed by the upstream maintained by the time server and the time reference formed by the GNSS satellite system, and the reliability of a plurality of time references of the time server is improved.
Drawings
FIG. 1 shows a schematic diagram of satellite co-vision;
FIG. 2 is a flowchart showing steps of a synchronous monitoring method according to an embodiment of the present application;
fig. 3 is a schematic diagram of a system structure to which the synchronization monitoring method according to the embodiment of the present application is applied;
FIG. 4 is a second flowchart illustrating a step of the synchronization monitoring method according to the embodiment of the present application;
fig. 5 shows one of schematic structural diagrams of a synchronous monitoring device according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a time server according to an embodiment of the present application;
FIG. 7 is a second schematic diagram of a synchronous monitoring device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a downstream time server according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, an embodiment of the present application provides a synchronization monitoring method, which is executed by a time server, and includes:
step 201, the time server maintains a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
step 202, obtaining a first deviation value between the first type time reference and the second type time reference;
and step 203, reporting first alarm information to a management system when the first deviation value is greater than a first threshold value, wherein the first alarm information is used for indicating that the first deviation value is out of limit.
In the embodiment of the application, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference (namely, the first time reference) formed at the upstream of the time server maintenance and the time reference (namely, the second time reference) formed by the GNSS satellite system, so that the reliability of a plurality of time references of the time server is improved.
Optionally, the system presets a threshold value (i.e. a first threshold value) of each time reference deviation maintained by the time server, compares the deviations in a certain period, and when the deviation exceeds the first threshold value, reports a difference value out-of-limit alarm to the management system.
Accordingly, prior to step 201, the method further comprises:
the time server synchronizes with the upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and the time server synchronizes with satellite system time according to the received satellite timing signals to obtain second-type time references synchronized with each satellite system.
For example, the time server performs satellite co-view interactions or terrestrial time synchronization (e.g., PTP-precision time protocol Precision Time Protocol) with the upstream time server, synchronizes with the upstream time server, and maintains the resulting time locally as a first type of time reference. Wherein the frequency of synchronization with the upstream time server and the maximum step size of each synchronization adjustment time are configurable.
For another example, the time server receives timing signals of different GNSS (beidou, GPS, GLONASS, etc.) through the satellite receiver, synchronizes with the GNSS time, and the different GNSS time obtained by synchronization is maintained locally as a second type of time reference. Wherein, the frequency of synchronization with the GNSS time and the maximum step length of each synchronization adjustment time are configurable.
As shown in fig. 3, the synchronization method provided by the embodiment of the present application involves two parts, namely a time server and a downstream time server (or called client), where the frequency reference of the time server is from a local atomic clock (group), and multiple time references can be maintained at the same time; while the downstream time server frequency reference is from the local atomic clock, a time reference may be maintained.
Wherein each satellite system is a different GNSS satellite, for example, a GPS (Global Positioning System ) satellite system, a BD (BeiDou Navigation, beidou) satellite system, or a GLONASS (GLOBAL NAVIGATION SATELLITE SYSTEM, global satellite navigation system) satellite system.
As an alternative embodiment, the method further comprises:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
In other words, the downstream time server transmits the time reference of the local maintenance and the clock difference information of the observed satellite to the time server at a certain period. The clock error information contains an identifier (including GNSS-GPS, GNSS-beidou or time service) of the local maintenance time reference. Wherein the period is configurable.
The system presets a threshold value of deviation between a second type time reference of the time server and a time reference maintained by a downstream time server, compares the deviation with a certain period, and reports a difference value out-of-limit alarm to the management system when the deviation exceeds the threshold value.
Namely, the downstream time server sends the common view data to the time server, so that the difference between the time reference corresponding to the time server and the time reference corresponding to the downstream time server is compared, the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved.
As another alternative embodiment, the method further comprises:
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
Alternatively, the time server transmits the clock skew information to the downstream time server in a period that is configurable and is not specifically limited herein.
In the embodiment of the application, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference formed by the upstream maintained by the time server and the time reference formed by the GNSS satellite system, so that the reliability of a plurality of time references of the time server is improved; further, the downstream time server sends the common view data to the time server, so that the difference between the time reference corresponding to the time server and the time reference corresponding to the downstream time server is compared, the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
As shown in fig. 4, an embodiment of the present application further provides a synchronization monitoring method, which is executed by a downstream time server, including:
step 401, receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
step 402, determining each time reference maintained by the time server according to the second clock difference information;
step 403, obtaining a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
and step 404, reporting third alarm information to the management system when the third deviation value is greater than a third threshold value, wherein the third alarm information is used for indicating that the third deviation value is out of limit.
In the embodiment of the application, the time server sends each time reference maintained locally and the second clock difference information of the observed satellite to the downstream time server in a certain period. Wherein the second clock difference information contains an identification of the time reference. Wherein the period is configurable.
In the embodiment of the application, a system presets a threshold value of deviation between a time reference of a downstream time server and each time reference of the time server, compares the deviation with a certain period, and reports a difference value out-of-limit alarm to a management system when the deviation exceeds the threshold value.
As an alternative embodiment, the method further comprises:
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
In the embodiment of the application, the downstream time server receives the common view data sent by the time server, and the time difference between the time reference corresponding to the time server and the downstream time server is compared at the downstream time server end, so that the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
As shown in fig. 5, an embodiment of the present application further provides a synchronization monitoring device, which is applied to a time server, including:
a maintenance module 501 for locally maintaining a plurality of time references; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
a first obtaining module 502, configured to obtain a first deviation value between the first type of time reference and the second type of time reference;
and the first alarm module 503 is configured to report first alarm information to a management system when the first deviation value is greater than a first threshold, where the first alarm information is used to indicate that the first deviation value is out of limit.
As an alternative embodiment, the apparatus further comprises:
the second receiving module is used for receiving the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite, which are sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
the first determining module is used for determining a time reference maintained by the downstream time server according to the first clock difference information;
a first acquisition module, configured to acquire a second deviation value between a time reference maintained by the downstream time server and the second type of time reference;
and the second alarm module is used for reporting second alarm information to the management system under the condition that the second deviation value is larger than a second threshold value, and the second alarm information is used for indicating that the second deviation value is out of limit.
As an alternative embodiment, the apparatus further comprises:
the second sending module is used for sending each time reference maintained locally and second clock difference information of the observed satellite to the downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
As an alternative embodiment, the apparatus further comprises:
the first synchronization module is used for synchronizing with the upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and the second synchronizing module is used for synchronizing with satellite system time according to the received satellite timing signals to obtain a second type time reference synchronized with each satellite system.
In the embodiment of the application, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference formed by the upstream maintained by the time server and the time reference formed by the GNSS satellite system, so that the reliability of a plurality of time references of the time server is improved; further, the downstream time server sends the common view data to the time server, so that the difference between the time reference corresponding to the time server and the time reference corresponding to the downstream time server is compared, the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
It should be noted that, the synchronization monitoring device provided in the embodiment of the present application is a device capable of executing the above synchronization monitoring method, and all embodiments of the above synchronization monitoring method are applicable to the device, and the same or similar beneficial effects can be achieved.
As shown in fig. 6, an embodiment of the present application further provides a time server, including a processor 600 and a transceiver 610, the transceiver 610 receiving and transmitting data under the control of the processor 600, the processor 600 being configured to perform the following operations:
maintaining a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
acquiring a first deviation value between the first type of time reference and the second type of time reference;
and under the condition that the first deviation value is larger than a first threshold value, reporting first alarm information to a management system, wherein the first alarm information is used for indicating that the first deviation value is out of limit.
As an alternative embodiment, the processor 600 is further configured to perform the following operations:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
As an alternative embodiment, the processor 600 is further configured to perform the following operations:
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
As an alternative embodiment, the processor 600 is further configured to perform the following operations:
synchronizing with an upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and synchronizing with satellite system time according to the received satellite timing signals to obtain a second type time reference synchronized with each satellite system.
In the embodiment of the application, the upstream synchronization performance or the GNSS synchronization performance is monitored by comparing the difference between the time reference formed by the upstream maintained by the time server and the time reference formed by the GNSS satellite system, so that the reliability of a plurality of time references of the time server is improved; further, the downstream time server sends the common view data to the time server, so that the difference between the time reference corresponding to the time server and the time reference corresponding to the downstream time server is compared, the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
It should be noted that, the time server provided in the embodiment of the present application is a time server capable of executing the above-mentioned synchronization monitoring method, and all embodiments of the above-mentioned synchronization monitoring method are applicable to the time server, and the same or similar beneficial effects can be achieved.
As shown in fig. 7, the embodiment of the present application further provides a synchronization monitoring device, which is applied to a downstream time server, and includes:
a first receiving module 701, configured to receive, from a time server, second clock difference information of observed satellites and each time reference locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
a reference determining module 702, configured to determine each time reference maintained by the time server according to the second clock difference information;
a deviation obtaining module 703, configured to obtain a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
and the third alarm module 704 is configured to report third alarm information to the management system when the third deviation value is greater than a third threshold, where the third alarm information is used to indicate that the third deviation value is out of limit.
As an alternative embodiment, the apparatus further comprises:
the information reporting module is used for reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to the time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
In the embodiment of the application, the downstream time server receives the common view data sent by the time server, and the time difference between the time reference corresponding to the time server and the downstream time server is compared at the downstream time server end, so that the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
It should be noted that, the synchronization monitoring device provided in the embodiment of the present application is a device capable of executing the above synchronization monitoring method, and all embodiments of the above synchronization monitoring method are applicable to the device, and the same or similar beneficial effects can be achieved.
As shown in fig. 8, the embodiment of the present application further provides a downstream time server, including a processor 800 and a transceiver 810, where the transceiver 810 receives and transmits data under the control of the processor 800, and the processor 800 is configured to perform the following operations:
receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
determining each time reference maintained by the time server according to the second clock difference information;
acquiring a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
and if the third deviation value is larger than a third threshold value, reporting third alarm information to a management system, wherein the third alarm information is used for indicating that the third deviation value is out of limit.
As an alternative embodiment, the processor 800 is further configured to perform the following operations:
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
In the embodiment of the application, the downstream time server receives the common view data sent by the time server, and the time difference between the time reference corresponding to the time server and the downstream time server is compared at the downstream time server end, so that the synchronization performance of the downstream time server is monitored, and the reliability of the downstream time server is improved; the embodiment of the application realizes the performance monitoring of the satellite common view time server system, so that the system achieves the reliability and operation and maintenance level of a carrier level.
It should be noted that, the downstream time server provided in the embodiment of the present application is a downstream time server capable of executing the above-mentioned synchronization monitoring method, and all embodiments of the above-mentioned synchronization monitoring method are applicable to the downstream time server, and the same or similar beneficial effects can be achieved.
The embodiment of the application also provides a communication device, which is a time server or a downstream time server, and comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes each process in the synchronous monitoring method embodiment as described above when executing the program, and can achieve the same technical effect, and the repetition is avoided, so that the description is omitted here.
The embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor implements each process in the embodiment of the synchronization monitoring method as described above, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. 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. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 or blocks.
These computer program instructions may also be stored in a computer-readable storage medium 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 storage medium 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.
While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.
Claims (12)
1. A synchronization monitoring method performed by a time server, comprising:
the time server maintains a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
acquiring a first deviation value between the first type of time reference and the second type of time reference;
reporting first alarm information to a management system when the first deviation value is larger than a first threshold value, wherein the first alarm information is used for indicating that the first deviation value is out of limit;
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
2. The method according to claim 1, wherein the method further comprises:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
3. The method of claim 1, wherein the time server maintains a plurality of time references locally, the method further comprising:
the time server synchronizes with the upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and the time server synchronizes with satellite system time according to the received satellite timing signals to obtain second-type time references synchronized with each satellite system.
4. A synchronization monitoring method performed by a downstream time server, comprising:
receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
determining each time reference maintained by the time server according to the second clock difference information;
acquiring a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
reporting third alarm information to a management system when the third deviation value is larger than a third threshold value, wherein the third alarm information is used for indicating that the third deviation value is out of limit;
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
5. A synchronization monitoring apparatus for use with a time server, comprising:
a maintenance module for locally maintaining a plurality of time references; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
a first acquisition module, configured to acquire a first deviation value between the first type of time reference and the second type of time reference;
the first alarm module is used for reporting first alarm information to the management system under the condition that the first deviation value is larger than a first threshold value, and the first alarm information is used for indicating that the first deviation value is out of limit;
the second sending module is used for sending each time reference maintained locally and second clock difference information of the observed satellite to the downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
6. A time server comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, the processor being configured to:
maintaining a plurality of time references locally; the plurality of time references includes: a first type of time reference synchronized to the upstream time server and a second type of time reference synchronized to each satellite system;
acquiring a first deviation value between the first type of time reference and the second type of time reference;
reporting first alarm information to a management system when the first deviation value is larger than a first threshold value, wherein the first alarm information is used for indicating that the first deviation value is out of limit;
the processor is also configured to perform the following operations:
transmitting the locally maintained time references and second clock difference information of the observed satellites to a downstream time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference.
7. The time server of claim 6, wherein the processor is further configured to:
receiving a time reference locally maintained by a downstream time server and first clock difference information of an observed satellite, wherein the time reference is sent by the downstream time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference;
determining a time reference maintained by the downstream time server according to the first clock difference information;
acquiring a second deviation value between the time reference maintained by the downstream time server and the second type of time reference;
and reporting second alarm information to a management system under the condition that the second deviation value is larger than a second threshold value, wherein the second alarm information is used for indicating that the second deviation value is out of limit.
8. The time server of claim 6, wherein the processor is further configured to:
synchronizing with an upstream time server through satellite common-view interaction or ground time synchronization to obtain a first type time reference synchronized with the upstream server;
and synchronizing with satellite system time according to the received satellite timing signals to obtain a second type time reference synchronized with each satellite system.
9. A synchronization monitoring apparatus for use with a downstream time server, comprising:
the first receiving module is used for receiving each time reference and second clock difference information of the observed satellite, which are sent by the time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
the reference determining module is used for determining each time reference maintained by the time server according to the second clock difference information;
the deviation acquisition module is used for acquiring a third deviation value between each time reference maintained by the time server and the time reference maintained locally by the downstream time server;
the third alarm module is used for reporting third alarm information to the management system when the third deviation value is larger than a third threshold value, and the third alarm information is used for indicating that the third deviation value is out of limit;
the information reporting module is used for reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to the time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
10. A downstream time server comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
receiving each time reference and second clock difference information of the observed satellite, which are sent by a time server and are locally maintained by the time server; the second clock skew information includes: zhong Chazhi and the identity of the corresponding time reference;
determining each time reference maintained by the time server according to the second clock difference information;
acquiring a third deviation value between each time reference maintained by the time server and a time reference maintained locally by the downstream time server;
reporting third alarm information to a management system when the third deviation value is larger than a third threshold value, wherein the third alarm information is used for indicating that the third deviation value is out of limit;
the processor is also configured to perform the following operations:
reporting the time reference locally maintained by the downstream time server and the first clock difference information of the observed satellite to a time server; the first clock difference information includes: zhong Chazhi and the identity of the corresponding time reference.
11. A communication device comprising a memory, a processor, and a program stored on the memory and executable on the processor; -wherein the processor, when executing the program, implements a synchronous monitoring method according to any one of claims 1 to 3; alternatively, the processor, when executing the program, implements the synchronization monitoring method as claimed in claim 4.
12. A computer readable storage medium having stored thereon a computer program, which when executed by a processor realizes the steps in the synchronization monitoring method according to any one of claims 1 to 3; alternatively, the program when executed by a processor implements the steps of the synchronization monitoring method as claimed in claim 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110001514.9A CN114726467B (en) | 2021-01-04 | 2021-01-04 | Synchronous monitoring method and device, time server and downstream time server |
| PCT/CN2022/070064 WO2022144022A1 (en) | 2021-01-04 | 2022-01-04 | Synchronous monitoring method and apparatus, time server and downstream time server |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110001514.9A CN114726467B (en) | 2021-01-04 | 2021-01-04 | Synchronous monitoring method and device, time server and downstream time server |
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| US7499712B2 (en) * | 2002-09-05 | 2009-03-03 | Qualcomm Incorporated | Position computation in a positioning system using synchronization time bias |
| CN201294513Y (en) * | 2008-09-26 | 2009-08-19 | 华东电网有限公司 | System for synchronizing whole network time based on satellite common vision |
| CN111867044A (en) * | 2015-09-24 | 2020-10-30 | 华为技术有限公司 | Synchronization method, user equipment and base station |
| CN110875818A (en) * | 2018-08-31 | 2020-03-10 | 中兴通讯股份有限公司 | Clock synchronization method, device, system, storage medium and electronic device |
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| WO2022144022A1 (en) | 2022-07-07 |
| CN114726467A (en) | 2022-07-08 |
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