CN114488766A - Clock time service method, device and medium - Google Patents
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Abstract
The method receives 5G time service information and satellite time service information, and obtains a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information. Because the precision of the 5G air interface time service is lower and is only in the order of hundreds of nanoseconds or 1 microsecond, but the precision of the satellite time service is about 20ns, the time service time of the satellite time service information can be obtained by calculating or predicting a first difference value of the 5G time service information and the satellite time service information, correcting the 5G time service information according to the first difference value, and carrying out time service on a clock according to the corrected 5G time service information, so that the time service precision can be improved, and the requirement of the time service precision can be met.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method, an apparatus, and a medium for clock timing.
Background
The fifth Generation Mobile Communication Technology (5th Generation Mobile Communication Technology, 5G) is a Communication Technology that is currently being promoted in the country, and will play an important role in the fields of unmanned driving, internet of things, and the like in the future. Although the satellite signal is used for timing a local clock, the accuracy is high, the signal is easy to receive interference when reaching the ground, the problem of lock losing and the like is caused, and the satellite signal is easy to be shielded. The problem can be solved by adopting a 5G air interface signal to time the clock, and a mode that the 5G air interface signal contains a time signaling and the local clock is timed through the time signaling is called 5G air interface timing. With the deployment of macro base stations, micro base stations and the like, 5G can provide indoor and outdoor signal coverage, and the signals received by users are not restricted by the environment. The 5G air interface time service can solve the defects of the traditional satellite time service, such as the signal is easy to be interfered, deceived and shielded.
However, the accuracy of the 5G air interface time service is low, which is only in the order of hundreds of nanoseconds or 1 microsecond, and the accuracy requirement of the time service cannot be met in many cases.
Therefore, how to improve the accuracy of 5G air interface timing is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The application aims to provide a clock time service method, a clock time service device and a clock time service medium, so as to improve the precision of 5G air interface time service.
In order to solve the above technical problem, the present application provides a clock timing method, including:
receiving 5G time service information and satellite time service information;
acquiring a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information;
correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
and carrying out time service on the clock according to the corrected 5G time service information.
Preferably, if the 5G time service information is received again and the satellite time service information is not received, the obtaining of the first difference value between the 5G time service information and the satellite time service information specifically includes:
and acquiring the first difference value through a system deviation and a random deviation, wherein the system deviation is an inherent deviation of the signal transmission equipment of the 5G time service information, the random deviation is obtained through prediction of a historical random deviation, and the historical random deviation is a difference value between a historical value of the first difference value and the system deviation.
Preferably, if the 5G time service information is received again and the satellite time service information is not received, the obtaining of the first difference value between the 5G time service information and the satellite time service information specifically includes:
and the difference between the time of the 5G time service information and the average value of the historical values of the satellite time service information.
Preferably, the method further comprises the following steps: and if the 5G time service information is not received and the satellite time service information is received next time, time service is carried out on the clock according to the satellite time service information.
Preferably, the random deviation is obtained by predicting historical random deviations, specifically:
obtaining a quadratic polynomial parameter according to the historical random deviation;
establishing a quadratic polynomial model according to the quadratic polynomial parameters;
and obtaining the random deviation according to the quadratic polynomial model.
Preferably, the signal transmission apparatus includes: the system comprises a 5G core station, a 5G base station and a clock;
if the 5G base station through which the 5G time service information passes is one, the system deviation is obtained through the hardware delay of the 5G base station, the distance between the 5G core station and the 5G base station and the distance between the 5G base station and the clock;
if the 5G base stations through which the 5G time service information passes are multiple, the system deviation is obtained through hardware delay of the 5G base stations, distances between the 5G core stations and the 5G base stations, distances between the 5G base stations and a clock, and the clock is the same as the clock.
Preferably, if the 5G time service information is received and the satellite time service information is received next time, the first difference is a difference between the current 5G time service information and the current satellite time service information.
In order to solve the above technical problem, the present application further provides a clock timing device, including:
the receiving module is used for receiving 5G time service information and satellite time service information;
the acquisition module is used for acquiring a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information;
the correction module is used for correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
and the time service module is used for carrying out time service on the clock according to the corrected 5G time service information.
In order to solve the above technical problem, the present application further provides a clock timing device, including: a memory for storing a computer program;
and the processor is used for realizing the steps of the clock timing method when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for time service of a clock are implemented.
The application provides a clock time service method, because satellite time service information is easily shielded, 5G time service information is mainly adopted to time service a local clock. If the 5G time service information is replaced by the satellite time service information for time service, the time service time obtained by the clock jumps, which can cause inaccurate time service to the clock, so if the 5G time service information can be received, the 5G time service information is only used for time service to the clock. The method comprises the steps of receiving 5G time service information and satellite time service information, and obtaining a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information. Because the precision of the 5G air interface time service is lower and is only in the order of hundreds of nanoseconds or 1 microsecond, but the precision of the satellite time service is about 20ns, the time service time of the satellite time service information can be obtained by calculating or predicting a first difference value of the 5G time service information and the satellite time service information, correcting the 5G time service information according to the first difference value, and carrying out time service on a clock according to the corrected 5G time service information, so that the time service precision can be improved, and the requirement of the time service precision can be met.
The application also provides a device and a medium for time service of the clock, which correspond to the method, so that the method has the same beneficial effects as the method.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a clock timing method according to an embodiment of the present disclosure;
fig. 2 is a structural block diagram of 5G air interface timing;
FIG. 3 is a block diagram of a 5G time service enhancement module;
FIG. 4 is a block diagram of a clock timing device according to an embodiment of the present disclosure;
fig. 5 is a structural diagram of a clock timing device according to another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a method, a device and a medium for time service of a clock, so as to improve the precision of 5G air interface time service.
In order that those skilled in the art will better understand the disclosure, the following detailed description is given with reference to the accompanying drawings.
The satellite time service has the advantages of high precision, but the signal of the satellite time service is easy to receive interference when reaching the ground, so that the problem of lock losing and the like is caused, the signal is easy to be shielded by the ground building, and the terminal can not receive the satellite time service information every time, so that the method provided by the application mainly adopts 5G time service information to time service the local clock. In addition, if the 5G time service information is used for time service of a local clock, the time service cannot be replaced by the satellite time service information at will, if different time service information is replaced at will, the time service time obtained by the clock jumps, and the time service to the clock is inaccurate, so if the 5G time service information can be received, the satellite time service information cannot be used for time service of the clock even if the satellite time service information is received. Fig. 1 is a flowchart of a clock timing method according to an embodiment of the present disclosure; the method comprises the following steps:
s10: receiving 5G time service information and satellite time service information;
fig. 2 is a structural block diagram of 5G air interface time service, which includes, as shown in the figure: the 5G time service enhancement module 10 and the clock 11, generally, the 5G time service enhancement module 10 and the clock 11 both belong to the terminal device, and the 5G time service enhancement module 10 receives the 5G time service information of the 5G base station and the satellite time service information of the GNSS satellite. FIG. 3 is a block diagram of a 5G time service enhancement module, which includes: the 5G time service enhancement module 10, the 5G time service enhancement module 10 is composed of a 5G air interface time service module 101, a satellite time service module 102, and a time difference comprehensive processing module 103, wherein the 5G air interface time service module 101 can receive 5G time service information, specifically, time service information in SIB9 signaling from a 5G base station, and output time information, including a B code and PPS; the satellite time service module 102 may receive satellite time service information, generate local pseudo range, satellite ephemeris and error estimation, and thereby generate local satellite time service time, and when the 5G air interface time service module 101 does not receive the 5G time service information, may temporarily use the satellite time service information to time a local clock 11. The structure shown in the above figures is only one way provided by the embodiments of the present application, and does not limit other ways of the present application.
S11: acquiring a first difference value of 5G time service information and satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information;
after the 5G time service enhancement module 10 receives the 5G time service information of the 5G base station and the satellite time service information of the GNSS satellite, a difference value between the two is calculated, that is, a first difference value, the 5G air interface time service module 101 receives the 5G time service information, the satellite time service module 102 receives the satellite time service information, and the two modules send the two kinds of information to the time difference comprehensive processing module 103 to calculate the difference value. Since the 5G time service enhancement module 10 will continue to receive 5G time service information and satellite time service information, but will not receive both information each time, it may be necessary to estimate the current difference from historical data when calculating the first difference. The specific way to calculate the first difference is not limited, and if the 5G time service information and the satellite time service information are both received when the information is received next time, the optimal scheme is to directly use the current 5G time service information and the satellite time service information to calculate the difference.
S12: correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
the first difference is the difference between the 5G time service information and the satellite time service information, the 5G time service enhancement module 10 corrects the 5G time service information according to the first difference to obtain the time service time of the satellite time service information, actually, the finally obtained time service time is the time service time contained in the satellite time service information, and the satellite time service information is easy to be interfered, so the 5G time service information is adopted and corrected. And obtaining a first difference value, namely obtaining the difference value between the 5G time service information and the satellite time service information, so that the estimated satellite time service information can be obtained by adding the first difference value and the 5G time service information.
S13: and time service is carried out on the clock according to the corrected 5G time service information.
The 5G time service enhancement module 10 is used for carrying out time service on the clock 11 according to the corrected 5G time service information, and is more accurate than the time service carried out by simply using the 5G time service information.
The application provides a clock time service method, because satellite time service information is easily shielded, 5G time service information is mainly adopted to time service a local clock. If the 5G time service information is replaced by the satellite time service information for time service, the time service time obtained by the clock jumps, which can cause inaccurate time service to the clock, so if the 5G time service information can be received, the 5G time service information is only used for time service to the clock. According to the method, 5G time service information and satellite time service information are received, and a first difference value of the 5G time service information and the satellite time service information is obtained, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information. Because the precision of the 5G air interface time service is lower and is only in the order of hundreds of nanoseconds or 1 microsecond, but the precision of the satellite time service is about 20ns, the time service time of the satellite time service information can be obtained by calculating or predicting a first difference value of the 5G time service information and the satellite time service information, correcting the 5G time service information according to the first difference value, and carrying out time service on a clock according to the corrected 5G time service information, the time service precision can be improved, and the requirement of the time service precision can be met.
If the 5G time service information is received and the satellite time service information is not received, a first difference value between the current 5G time service information and the current satellite time service information cannot be directly calculated, prediction needs to be carried out according to historical data, and therefore the first difference value for obtaining the 5G time service information and the satellite time service information is specifically as follows: and acquiring a first difference value through a system deviation and a random deviation, wherein the system deviation is the inherent deviation of the signal transmission equipment of the 5G time service information, the random deviation is obtained through historical random deviation prediction, and the historical random deviation is the difference value between the historical value of the first difference value and the system deviation. The random deviation is obtained by predicting historical random deviations, and specifically comprises the following steps: obtaining a quadratic polynomial parameter according to historical random deviation; establishing a quadratic polynomial model according to the quadratic polynomial parameters; and obtaining the random deviation according to a quadratic polynomial model.
The system skew is a skew inherent to the signal transmission device of the 5G time service information, and the mode of acquiring the system skew is not particularly limited. There are also time offsets within the system that are due to some non-fixed factors, such as: 5G base station and terminal connectionThe resulting time delay, etc. These cannot be fixed values and require estimation, called random bias. The 5G time service information is less accurate than satellite time service information, and is usually caused by systematic bias and random bias. When the 5G time service information is received next time, the local clock can still be time-service by using the 5G time service information, but the satellite time service information is easily shielded, and the terminal cannot obtain the satellite time service information, so that the first difference for correcting the 5G time service information cannot be directly obtained, and calculation according to historical data is needed. The embodiment of the present application provides one of the calculation methods, and does not limit other methods of the present application. The sum of the systematic deviation and the random deviation is the first difference, the systematic deviation can be directly obtained and is generally fixed, the random deviation can be obtained by historical random deviation prediction, and because the random deviation is the difference between the first difference and the systematic deviation, the historical random deviation deltat can be obtained according to the previous first difference and the fixed systematic deviation1，…，δtk-1Then obtaining a quadratic polynomial parameter a by a least square method0，a1，a2Thus, historical random deviation is obtained, and the current random deviation can be estimated according to a quadratic polynomial model, such as formula (1):
for systematic deviation
Expressed, the first difference is calculated as in equation (2):
in the formula (2), δ T is a first difference, and the 5G time service information is combined with the first difference to obtain the corrected 5G time service information. It should be noted that, establishing a quadratic polynomial model through historical random deviations is only one scheme provided in the embodiments of the present application, and it is also possible to predict the current random deviation by establishing other models.
According to the method provided by the embodiment of the application, when 5G time service information is received and satellite time service information is not received, historical random deviation can be obtained according to historical data, a model is established according to the historical random deviation, finally, the estimated random deviation is added with fixed system deviation, and an estimated first difference value is obtained.
In the above embodiment, the first difference is obtained by the systematic deviation and the random deviation, and the scheme can predict the first difference more accurately. However, in a specific implementation, the measurement of the system deviation is difficult, and if the measured system deviation is not accurate, the finally obtained first difference is also inaccurate, so that the embodiment of the present application provides another scheme for estimating the first difference, and if the 5G time service information is received again and the satellite time service information is not received, the obtaining of the first difference between the 5G time service information and the satellite time service information specifically includes: the difference between the time 5G time service information and the average value of the historical values of the satellite time service information.
Under normal conditions, if the 5G time service information and the satellite time service information are received, the difference value between the two time service information can be directly calculated to obtain a first difference value, if the satellite time service information is not received, the historical value of the satellite time service information can be directly utilized, the current satellite time service information can be predicted by calculating the average value of the previous satellite time service information, and then the difference value between the current 5G time service information and the predicted satellite time service information is directly calculated to be used as the first difference value.
According to the scheme provided by the embodiment of the application, when the system deviation is inconvenient to measure or even cannot be measured, the first difference can be predicted conveniently, and therefore 5G time service information is corrected.
In an implementation, the 5G time service information may also be lost, so the method further includes: and if the 5G time service information is not received and the satellite time service information is received next time, the clock is timed according to the satellite time service information. If the 5G time service information and the satellite time service information are not received, the clock can run the time of the clock, namely, a time keeping mode; when the 5G air interface time service module does not receive the 5G time service information, but the satellite time service module receives the satellite time service information, the satellite time service information can be temporarily adopted to time a local clock, and although time jump may be caused, the time is more accurate than the time of the local clock.
The signal transmission device includes: the system comprises a 5G core station, a 5G base station and a clock; wherein, the clock from the 5G core station to the local of the 5G time service information needs to pass through at least one 5G base station, and generally, the number of the 5G base stations is not more than 3; in addition, because the local clock and the 5G time service enhancement module in the above embodiment both belong to the terminal device, the distance between the two modules is negligible. If the 5G base station through which the 5G time service information passes is one, the system deviation is obtained through the hardware delay of the 5G base station, the distance between the 5G core station and the 5G base station and the distance between the 5G base station and the clock; if there are a plurality of 5G base stations through which the 5G time service information passes, the system deviation is obtained by the hardware delay of the 5G base station, the distance between the 5G core station and the 5G base station, the distance between the plurality of 5G base stations, and the distance between the 5G base station and the clock.
Under the condition that the 5G core station, the 5G base station and the clock are all fixed, time deviation caused by distances among different devices and hardware forwarding delay of the 5G base station can be obtained through measurement, and the time delay is generally considered to be a fixed value. This value is called the systematic deviation, using
The method provided by the embodiment of the application can be used for measuring the system deviation, so that the random deviation can be more accurately calculated, and the accurate first difference value is finally obtained.
In a specific implementation, if the satellite time service information is not interfered and the 5G time service information is normally transmitted, namely the 5G air interface time service module receives the 5G time service information and the satellite time service module receives the satellite time service information, although the first difference value can be predicted according to historical data, the optimal mode is to directly calculate the difference value between the current 5G time service information and the current satellite time service information as the first difference value.
In the above embodiments, the method of clock timing is described in detail, and the present application also provides embodiments corresponding to the device of clock timing. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one is from the perspective of the function module, and the other is from the perspective of the hardware.
Based on the angle of the functional module, this embodiment provides a clock time service device, fig. 4 is a structural diagram of the clock time service device provided in this embodiment of the present application, and as shown in fig. 4, the device includes:
the receiving module 12 is used for receiving 5G time service information and satellite time service information;
the acquisition module 13 is configured to acquire a first difference between the 5G time service information and the satellite time service information, where the first difference is a difference of current time information or a difference predicted according to historical information;
the correction module 14 is used for correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
and the time service module 15 is used for carrying out time service on the clock according to the corrected 5G time service information.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The clock timing device provided by the embodiment corresponds to the method, so that the clock timing device has the same beneficial effects as the method.
In terms of hardware, this embodiment provides another clock timing device, fig. 5 is a structural diagram of the clock timing device according to another embodiment of the present application, and as shown in fig. 5, the clock timing device includes: a memory 20 for storing a computer program;
the processor 21 is configured to implement the steps of the method for timing the clock as mentioned in the above embodiments when executing the computer program.
The device for timing provided by the embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 21 may be implemented in hardware using at least one of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor for processing computational operations related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing a computer program 201, wherein after being loaded and executed by the processor 21, the computer program can implement the steps related to the clock timing method disclosed in any one of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like. Data 203 may include, but is not limited to, data related to a method of clock timing, and the like.
In some embodiments, the clock timing apparatus may further include a display 22, an input/output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
It will be appreciated by those skilled in the art that the arrangements shown in the drawings are not intended to be limiting as to the means of clock timing and may include more or less components than those shown.
The device for timing clock provided by the embodiment of the application comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the following method can be realized: a method for time service of a clock.
The clock timing device provided by the embodiment corresponds to the method, so that the clock timing device has the same beneficial effects as the method.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially implemented in the form of a software product, which is stored in a storage medium and performs all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solution. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The computer-readable storage medium provided by the embodiment corresponds to the method, and therefore has the same beneficial effects as the method.
The method, the device and the medium for timing the clock provided by the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the same element.
Claims (10)
1. A method for time service of a clock, comprising:
receiving 5G time service information and satellite time service information;
acquiring a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information;
correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
and carrying out time service on the clock according to the corrected 5G time service information.
2. The clock time service method according to claim 1, wherein if the 5G time service information is received again and the satellite time service information is not received, the obtaining of the first difference value between the 5G time service information and the satellite time service information specifically comprises:
and acquiring the first difference value through a system deviation and a random deviation, wherein the system deviation is an inherent deviation of the signal transmission equipment of the 5G time service information, the random deviation is obtained through prediction of a historical random deviation, and the historical random deviation is a difference value between a historical value of the first difference value and the system deviation.
3. The clock time service method according to claim 1, wherein if the 5G time service information is received again and the satellite time service information is not received, the obtaining of the first difference value between the 5G time service information and the satellite time service information specifically comprises:
and the difference between the time of the 5G time service information and the average value of the historical values of the satellite time service information.
4. The method for timing clocks according to claim 1, further comprising: and if the 5G time service information is not received and the satellite time service information is received next time, time service is carried out on the clock according to the satellite time service information.
5. The method for clock timing according to claim 2, wherein the random bias is obtained by historical random bias prediction, and specifically comprises:
obtaining a quadratic polynomial parameter according to the historical random deviation;
establishing a quadratic polynomial model according to the quadratic polynomial parameters;
and obtaining the random deviation according to the quadratic polynomial model.
6. The clock timing method according to claim 2 or 5, wherein the signal transmission device comprises: the system comprises a 5G core station, a 5G base station and a clock;
if the 5G base station through which the 5G time service information passes is one, the system deviation is obtained through the hardware delay of the 5G base station, the distance between the 5G core station and the 5G base station and the distance between the 5G base station and the clock;
if the 5G base stations through which the 5G time service information passes are multiple, the system deviation is obtained through hardware delay of the 5G base stations, distances between the 5G core stations and the 5G base stations, distances between the 5G base stations and a clock, and the clock is the same as the clock.
7. The method according to claim 1, wherein if the 5G time service information is received next time and the satellite time service information is received, the first difference is a difference between the current 5G time service information and the current satellite time service information.
8. A clock time service device, comprising:
the receiving module is used for receiving 5G time service information and satellite time service information;
the acquisition module is used for acquiring a first difference value of the 5G time service information and the satellite time service information, wherein the first difference value is a difference value of current time information or a difference value predicted according to historical information;
the correction module is used for correcting the 5G time service information according to the first difference value to obtain the time service time of the satellite time service information;
and the time service module is used for carrying out time service on the clock according to the corrected 5G time service information.
9. A clock time service device is characterized by comprising a memory, a clock time service module and a clock time service module, wherein the memory is used for storing a computer program;
a processor for implementing the steps of the method of clocking according to any of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of clock timing according to any one of claims 1 to 7.
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