阅读说明：本技术 一种时间同步方法、装置、计算机设备和存储介质 (Time synchronization method and device, computer equipment and storage medium ) 是由 张家辉 谢志君 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种时间同步方法、装置、计算机设备和存储介质。该方法包括：接收主设备定时广播的时间包；所述时间包中包括当前时间包发送时间以及标的时间包发送时间,其中,所述标的时间包在所述当前时间包之前发送；获取当前时间包接收时间,以及标的时间包接收时间；根据当前时间包发送时间、标的时间包发送时间、当前时间包接收时间,以及标的时间包接收时间,更新从设备时间。使用本发明的技术方案,可以实现RF从设备之间的时间同步。(The invention discloses a time synchronization method, a time synchronization device, computer equipment and a storage medium. The method comprises the following steps: receiving a time packet regularly broadcasted by the main equipment; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet; acquiring the receiving time of the current time packet and the receiving time of the target time packet; and updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time. By using the technical scheme of the invention, the time synchronization between the RF slave devices can be realized.)

1. A method of time synchronization, performed by a slave device, the method comprising:

receiving a time packet regularly broadcasted by the main equipment; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

acquiring the receiving time of the current time packet and the receiving time of the target time packet;

and updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

2. The method of claim 1, wherein updating the slave device time based on the current time packet transmission time, the target time packet transmission time, the current time packet reception time, and the target time packet reception time comprises:

and if the current time packet receiving time meets the time range condition, updating the slave equipment time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

3. The method of claim 2, wherein updating the slave device time based on the current time packet transmit time, the target time packet transmit time, the current time packet receive time, and the target time packet receive time, further comprises:

and if the receiving time of the current time packet is determined to meet the time synchronization interval condition, updating the slave equipment time according to the sending time of the current time packet, the sending time of the target time packet, the receiving time of the current time packet and the receiving time of the target time packet.

4. The method of claim 2, further comprising:

and if the receiving time of the current time packet is determined not to meet the time range condition, updating the time of the slave equipment to the sending time of the current time packet.

5. The method of claim 3, further comprising:

and if the receiving time of the current time packet is determined not to meet the time synchronization interval condition, returning to execute the operation of receiving the time packet of the timing broadcast of the master equipment until the receiving time of the current time packet meets the time synchronization interval condition.

6. The method of claim 1, wherein updating the slave device time based on the current time packet transmission time, the target time packet transmission time, the current time packet reception time, and the target time packet reception time comprises:

calculating a time difference according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time;

and updating the slave device time according to the time difference.

7. The method of claim 6, wherein calculating the time difference based on the current time packet transmission time, the target time packet transmission time, the current time packet reception time, and the target time packet reception time comprises:

the difference between the current time packet transmission time and the current time packet reception time and the average value between the difference between the target time packet transmission time and the target time packet reception time are taken as the time difference.

8. A time synchronization apparatus, disposed in a slave device, the apparatus comprising:

the time packet receiving module is used for receiving a time packet broadcasted by the main equipment at regular time; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

a receiving time determining module for obtaining the receiving time of the current time packet and the receiving time of the target time packet;

and the time updating module is used for updating the slave equipment time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the time synchronization method according to any one of claims 1 to 7 when executing the program.

10. A storage medium containing computer-executable instructions for performing the time synchronization method of any one of claims 1-7 when executed by a computer processor.

Technical Field

The embodiment of the invention relates to the technical field of wireless communication, in particular to a time synchronization method, a time synchronization device, computer equipment and a storage medium.

Background

RF (Radio Frequency) devices are divided into master devices and slave devices, and a plurality of slave devices need to maintain time synchronization, thereby implementing the same screen.

Because bidirectional communication cannot be performed between the RF devices, the conventional method for implementing time synchronization between the RF devices is to broadcast a self time packet by the master device, and the slave device performs timing according to the received time packet broadcast by the master device. Normally, the slave device performs the timing operation after receiving the time packet, however, due to various factors such as device packet loss, network delay and adjustment, the situation that the slave device is obviously misaligned on the same screen is easily caused.

Disclosure of Invention

The embodiment of the invention provides a time synchronization method, a time synchronization device, computer equipment and a storage medium, so as to realize time synchronization among RF slave equipment.

In a first aspect, an embodiment of the present invention provides a time synchronization method, where the method includes:

receiving a time packet regularly broadcasted by the main equipment; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

acquiring the receiving time of the current time packet and the receiving time of the target time packet;

and updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

In a second aspect, an embodiment of the present invention further provides a time synchronization apparatus, where the apparatus includes:

the time packet receiving module is used for receiving a time packet broadcasted by the main equipment at regular time; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

a receiving time determining module for obtaining the receiving time of the current time packet and the receiving time of the target time packet;

and the time updating module is used for updating the slave equipment time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

In a third aspect, an embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the time synchronization method according to any one of the embodiments of the present invention.

In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the time synchronization method according to any one of the embodiments of the present invention.

The time packet is broadcasted at regular time by the master device, the current time packet sending time and the target time packet sending time in the time packet are obtained after the slave device receives the time packet, the current time packet receiving time when the time packet is received and the target time packet receiving time when the target time packet is received are obtained, and the slave device time is updated according to the four times. The problem that in a slave device time synchronization scheme in the prior art, due to the fact that multiple factors such as device packet loss, network delay and adjustment exist, the slave devices are prone to being displaced in the same screen is solved, and time synchronization among the RF slave devices is achieved.

Drawings

Fig. 1 is a flowchart of a time synchronization method according to a first embodiment of the present invention;

FIG. 2a is a flowchart of a time synchronization method according to a second embodiment of the present invention;

FIG. 2b is a flow chart of a time synchronization method according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a time synchronization apparatus according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a computer device in the fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a flowchart of a time synchronization method according to an embodiment of the present invention, where the embodiment is applicable to a case where time synchronization of RF slave devices is maintained, and the method may be performed by a time synchronization apparatus, which may be implemented by software and/or hardware and is generally integrated in an RF slave device.

As shown in fig. 1, the technical solution of the embodiment of the present invention specifically includes the following steps:

and S110, receiving a time packet regularly broadcasted by the master device.

The time packet includes a target time packet transmission time, wherein the target time packet is transmitted before the current time packet.

Among the co-channel RF devices, only one RF master device is used to broadcast the time packet, and the RF master device needs to keep sending the time packet at a fixed time.

In the embodiment of the present invention, the current time packet includes a current time packet transmission time, and after the RF master device transmits the current time packet, the current time packet transmission time is set to a target time packet transmission time at the time of next time transmission of the time packet.

The target time packet may be a previous time packet of the current time packet, that is, the master device records each time of the time packet sent at regular time, and when the current time packet is sent, the current time packet includes the sending time of the current time packet and the sending time of the previous time packet.

And S120, acquiring the current time packet receiving time and the target time packet receiving time.

The receiving time of the current time packet is also the time when the current time packet is received, and the target time packet is the time when the target time packet is received. In an embodiment of the invention, each time a time packet is accepted, the RF slave device records the time of receipt of the time packet. When the four time data of the current time packet sending time, the current time packet receiving time, the target time packet sending time and the target time packet receiving time are all complete, the technical scheme of the embodiment of the invention is adopted to calculate the time difference and carry out time synchronization.

And S130, updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

In the embodiment of the invention, when the four time data of the current time packet sending time, the current time packet receiving time, the target time packet sending time and the target time packet receiving time are confirmed to be complete, the synchronization time is calculated according to the four time data, and therefore the time of the slave equipment is updated.

Optionally, the time difference may be a difference between the current time packet transmission time and the current time packet reception time, and an average value between the difference between the target time packet transmission time and the target time packet reception time, and the slave device time may be updated according to the time difference.

The target time packet is a time packet transmitted before the current time packet, and optionally, when the target time packet is a previous time packet of the current time, the time difference is calculated according to the transmission time and the reception time of the current time packet, and the transmission time and the reception time of the previous time packet to update the slave device time.

Optionally, when the time interval for the RF master to send the time packet at regular time is small, the target time packet may also be set as a previous time packet or two previous time packets of the current time. Specifically, when the current time packet is received, if the four time data of the sending time and the receiving time of the current time packet, and the sending time and the receiving time of the previous time packet are complete, the slave device time is updated according to the four time data. If the four time data are not complete, and the four time data of the sending time and the receiving time of the current time packet, the sending time and the receiving time of the previous two time packets are complete, the slave device time is updated according to the four time data of the sending time and the receiving time of the current time packet, and the sending time and the receiving time of the previous two time packets. The present embodiment does not limit the order of the target time packet and the current time packet.

According to the technical scheme of the embodiment, the time packet is broadcasted at regular time by the master device, the current time packet sending time and the target time packet sending time in the time packet are obtained after the slave device receives the time packet, the current time packet receiving time when the time packet is received and the target time packet receiving time when the target time packet is received are obtained, and the slave device time is updated according to the four times. The problem that in a slave device time synchronization scheme in the prior art, due to the fact that multiple factors such as device packet loss, network delay and adjustment exist, the slave devices are prone to being displaced in the same screen is solved, and time synchronization among the RF slave devices is achieved.

Example two

Fig. 2a is a flowchart of a time synchronization method provided in the second embodiment of the present invention, and the second embodiment of the present invention further embodies the step of updating the slave device time, and adds a process of determining whether the current time packet receiving time meets the time range condition and the time synchronization interval condition, and a processing process when the time range condition or the time synchronization interval condition is not met.

Correspondingly, as shown in fig. 2a, the technical solution of the embodiment of the present invention specifically includes the following steps:

and S210, receiving a time packet regularly broadcasted by the main equipment.

Optionally, the RF master device may transmit the time packet once every 1000ms, but the embodiment is not limited thereto.

S220, obtaining the current time packet receiving time and the target time packet receiving time.

When the RF slave device receives the time packet, the received time packet is used as a current time packet, and the receiving time of the current time packet is recorded. From the current time packet, the current time packet transmission time and the target time packet transmission time can be acquired.

And S230, judging whether the receiving time of the current time packet meets the time range condition, if so, executing S240, and otherwise, executing S270.

The condition of meeting the time range refers to that the time difference value between the receiving time of the current time packet and the sending time of the current time packet is within a certain time range, and the purpose of confirming that the receiving time of the current time packet meets the time range condition is to eliminate the conditions that the current time packet suffers from network delay and the like and ensure that the network is normal in the sending process of the current time packet.

For example, when the RF master device may transmit the time packet every 1000ms, the time range may be set to 1500ms, that is, the time difference between the current time packet receiving time and the current time packet transmitting time is within 1500ms, and if the current time packet transmitting time is 10:05:00 and the current time packet receiving time is 10:05:01, it is determined that the current time packet receiving time satisfies the time range condition. And if the current time packet receiving time is 10:05:02, determining that the current time packet receiving time does not meet the time range condition.

And S240, judging whether the receiving time of the current time packet meets the time synchronization interval condition, if so, executing S250, and if not, returning to execute S210.

Satisfying the time synchronization interval condition means that the time interval between the current time packet receiving time and the time of last time synchronization is greater than or equal to a certain time interval. The purpose of determining that the current time packet reception time satisfies the time synchronization interval condition is to avoid fluctuations caused by frequent updates of the slave device time.

In the embodiment of the invention, if the receiving time of the current time packet does not meet the time synchronization interval condition, the time updating is frequent due to the fact that time synchronization is carried out again currently, so that the time updating of the slave equipment is not carried out currently, and the processing is continued when the next time packet is received.

And S250, calculating the time difference according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

Optionally, calculating the time difference according to the current time packet sending time, the target time packet sending time, the current time packet receiving time, and the target time packet receiving time, may include: the difference between the current time packet transmission time and the current time packet reception time and the average value between the difference between the target time packet transmission time and the target time packet reception time are taken as the time difference.

If the time difference value between the current time packet receiving time and the current time packet sending time is determined to be within a certain time range, and the time interval between the current time packet receiving time and the time of last time synchronization is greater than or equal to a certain time interval, whether the four time data of the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time are complete or not is determined, and if the four data are not complete, the situation that packet loss or network delay possibly exists is shown, the processing is carried out when the next time packet is continuously received. If the four time data are complete, calculating the time difference by the following formula:

wherein, Delta T is time difference T₀Is the current time packet transmission time, T₁Is the target time packet transmission time, T₂Is the current time packet reception time, T₃Is the target time packet reception time.

And S260, updating the slave equipment time according to the time difference.

And after the time difference is calculated, calculating the synchronous time, and updating the slave equipment time to the synchronous time. Illustratively, if the slave time is 10:05:02 and the time difference is-1 s, the slave time is updated to 10:05: 01.

In the embodiment of the invention, as for each RF slave device, the uniform time synchronization mode is adopted for time synchronization, compared with a mode of directly updating the slave device time according to the current time packet sending time in the time packet, the method avoids the screen-on-screen malposition of the slave devices caused by network delay, time packet loss and other factors, ensures the time synchronization among the RF slave devices, and improves the stability of the time synchronization of the RF slave devices.

And S270, updating the time of the slave equipment to the current time packet sending time.

In the embodiment of the invention, if the receiving time of the current time packet does not meet the time range condition, which indicates that the conditions of network delay, network adjustment and the like may exist in the sending process of the current time packet, the time of the slave device is directly updated to the sending time of the current time packet, and the processing is carried out when the next time packet is continuously received.

According to the technical scheme of the embodiment, the time packet is broadcasted at regular time by the master device, when the receiving time of the current time packet is in a time range and meets the time synchronization interval, the sending time of the current time packet, the sending time of the target time packet and the receiving time of the target time packet in the time packet are obtained, the time of the slave device is updated according to the four times, if the receiving time of the current time packet is not in the time range, the time of the slave device is directly updated according to the sending time of the current time packet in the time packet, and if the receiving time of the current time packet does not meet the time synchronization interval, the processing is continued when the next time packet is received. The problem that in a slave device time synchronization scheme in the prior art, due to the fact that multiple factors such as device packet loss, network delay and adjustment exist, the slave devices are prone to being displaced in the same screen is solved, and time synchronization among the RF slave devices is achieved.

Specific application scenario 1

Fig. 2b is a flowchart of a time synchronization method in a first scenario to which the present invention is specifically applied, and as shown in fig. 2b, the method includes:

and S10, acquiring the receiving time of the current time packet when the current time packet is received.

The time packet is sent by the RF master device in a timing broadcast mode, and the time packet comprises the sending time of the current time packet and the sending time of the previous time packet.

And S20, if the current time packet receiving time meets the time range condition, executing S30, otherwise executing S70.

Satisfying the time range condition means that the time difference between the current time packet receiving time and the current time packet transmitting time is within a certain time range.

S30, if the four data of the current time packet receiving time, the previous time packet receiving time and the previous time packet sending time are determined to be complete, executing S40, otherwise executing S70.

And S40, if the current time packet receiving time meets the time synchronization interval condition, executing S50, and otherwise, returning to execute S10.

Satisfying the time synchronization interval condition means that the time interval between the current time packet receiving time and the time of last time synchronization is greater than or equal to a certain time interval.

S50, taking the difference between the current time packet transmission time and the current time packet reception time and the average value between the difference between the target time packet transmission time and the target time packet reception time as the time difference.

And S60, updating the slave equipment time according to the time difference. Return is made to execution S10.

And S70, updating the slave device time according to the current time packet sending time. Return is made to execution S10.

And when the receiving time of the current time packet does not meet the time range condition, or the data of the four times of the receiving time of the current time packet, the receiving time of the previous time packet and the sending time of the previous time packet are incomplete, directly updating the time of the slave equipment according to the sending time of the current time packet.

According to the technical scheme of the embodiment, the time packet is broadcasted at regular time through the master device, when the receiving time of the current time packet is in a time range, four time data of the receiving time of the current time packet, the sending time of the target time packet and the receiving time of the target time packet are complete, and the receiving time of the current time packet meets a time interval condition, time difference is calculated according to the four times, the time of the slave device is updated, if the receiving time of the current time packet is not in the time range or the four time data are incomplete, the time of the slave device is directly updated according to the sending time of the current time packet in the time packet, and if the receiving time of the current time packet does not meet the time synchronization interval, processing is continued when the next time packet is received. The problem that in a slave device time synchronization scheme in the prior art, due to the fact that multiple factors such as device packet loss, network delay and adjustment exist, the slave devices are prone to being displaced in the same screen is solved, and time synchronization among the RF slave devices is achieved.

EXAMPLE III

Fig. 3 is a schematic structural diagram of a time synchronization apparatus according to a third embodiment of the present invention, where the time synchronization apparatus is deployed in an RF slave device and used in cooperation with an RF master device. The device includes: a time packet receiving module 310, a reception time determining module 320, and a time updating module 330. Wherein:

a time packet receiving module 310, configured to receive a time packet regularly broadcasted by a master device; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

a receiving time determining module 320, configured to obtain a current time packet receiving time and a target time packet receiving time;

the time updating module 330 is configured to update the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time, and the target time packet receiving time.

According to the technical scheme of the embodiment, the time packet is broadcasted at regular time by the master device, the current time packet sending time and the target time packet sending time in the time packet are obtained after the slave device receives the time packet, the current time packet receiving time when the time packet is received and the target time packet receiving time when the target time packet is received are obtained, and the slave device time is updated according to the four times. The method solves the problem that in the time synchronization scheme of the slave equipment in the prior art, due to the existence of multiple factors such as equipment packet loss, network delay and adjustment, the slave equipment is easy to misplace in the same screen, and realizes the time synchronization between the RF slave equipment

On the basis of the above embodiment, the time updating module 330 includes:

and the time range condition judging unit is used for updating the slave equipment time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time if the current time packet receiving time is determined to meet the time range condition.

On the basis of the above embodiment, the time updating module 330 includes:

and the time synchronization interval condition judging unit is used for updating the slave equipment time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time if the current time packet receiving time is determined to meet the time synchronization interval condition.

On the basis of the above embodiment, the apparatus further includes:

and the slave equipment time updating module is used for updating the time of the slave equipment to the current time packet sending time if the current time packet receiving time is determined not to meet the time range condition.

On the basis of the above embodiment, the apparatus further includes:

and the time synchronization waiting module is used for returning to execute the operation of receiving the time packet regularly broadcasted by the main equipment until the receiving time of the current time packet meets the time synchronization interval condition if the receiving time of the current time packet does not meet the time synchronization interval condition.

On the basis of the above embodiment, the time updating module 330 includes:

a time difference calculation unit for calculating a time difference based on the current time packet transmission time, the target time packet transmission time, the current time packet reception time, and the target time packet reception time;

and the time updating unit is used for updating the slave equipment time according to the time difference.

On the basis of the foregoing embodiment, the time difference calculating unit is specifically configured to:

the difference between the current time packet transmission time and the current time packet reception time and the average value between the difference between the target time packet transmission time and the target time packet reception time are taken as the time difference.

The time synchronization device provided by the embodiment of the invention can execute the time synchronization method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

Example four

Fig. 4 is a schematic structural diagram of a computer apparatus according to a fourth embodiment of the present invention, as shown in fig. 4, the computer apparatus includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of the processors 410 in the computer device may be one or more, and one processor 410 is taken as an example in fig. 4; the processor 410, the memory 420, the input device 430 and the output device 440 in the computer apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 4.

The memory 420 serves as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as the modules corresponding to the time synchronization method in the embodiment of the present invention (e.g., the time packet receiving module 310, the reception time determining module 320, and the time updating module 330 in the time synchronization apparatus). The processor 410 executes various functional applications of the computer device and data processing by executing software programs, instructions and modules stored in the memory 420, that is, the time synchronization method described above is implemented. The method comprises the following steps:

receiving a time packet regularly broadcasted by the main equipment; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

acquiring the receiving time of the current time packet and the receiving time of the target time packet;

and updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to a computer device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the computer apparatus. The output device 440 may include a display device such as a display screen.

EXAMPLE five

An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a time synchronization method, the method including:

receiving a time packet regularly broadcasted by the main equipment; the time packet comprises current time packet sending time and target time packet sending time, wherein the target time packet is sent before the current time packet;

acquiring the receiving time of the current time packet and the receiving time of the target time packet;

and updating the slave device time according to the current time packet sending time, the target time packet sending time, the current time packet receiving time and the target time packet receiving time.

Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the time synchronization method provided by any embodiment of the present invention.

From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

It should be noted that, in the embodiment of the time synchronization apparatus, each included unit and each included module are only divided according to functional logic, but are not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.