CN108574547B - A time calibration method and device - Google Patents

Abstract

The invention discloses a time calibration method and a device, wherein the method comprises the following steps: acquiring time values of N pieces of terminal side data and M pieces of network side data generated by communication between a terminal and a network side; n and M are integers; calculating to obtain a time error coefficient corresponding to the communication between the terminal equipment and the network side based on the time values of the N pieces of terminal side data and the time values of the M pieces of network side data; and calibrating the time values of N pieces of terminal side data generated by the communication between the terminal equipment and the network side or calibrating the time values of M pieces of network side data generated by the communication between the terminal equipment and the network side based on the time error coefficients.

Description

A time calibration method and device

technical field

The present invention relates to information synchronization technology in the communication field, in particular to a time calibration method and device.

Background technique

In the process of multi-interface data correlation analysis of communication network signaling and business process, since the terminal, air interface, and network side data are collected by different devices, the time of multi-interface data is not synchronized, and the logic of signaling/business process is out of sequence, which cannot be carried out. Correlation Analysis. Existing time synchronization technologies usually include GPS synchronization based on satellite data and NTP synchronization based on network protocols, and synchronization of time stamps of multi-source data according to the business logic context.

SUMMARY OF THE INVENTION

The invention discloses a time calibration method and device, aiming at solving some problems existing in the prior art.

For example, time synchronization methods such as GPS/NTP have the problem of synchronization failure caused by insufficient clock accuracy of various data acquisition devices, such as:

Due to the existence of various data sources with different hardware such as mobile phones, the relative time of the data timestamp is not the same as the actual elapsed time. For example, the actual time of the two signaling data before and after is 1000 seconds. If the deviation between the crystal oscillator of the mobile phone clock and the standard clock is 1/100,000, the difference between the time stamps is 1000*0.00001=0.01 second=10 milliseconds. An error of this magnitude is enough to cause a problem that the business process logic cannot be restored for signaling with a signaling interval of the order of milliseconds.

A time calibration method provided by the present invention, the method includes:

The time values of N pieces of terminal-side data and the time values of M pieces of network-side data generated by the communication between the terminal and the network side are obtained; N and M are both integers; wherein, the terminal-side data is received by the terminal or data sent, the network side data is the data received or sent by the network side;

Calculate, based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, a time error coefficient corresponding to the communication between the terminal device and the network side;

Based on the time error coefficient, the time values of N pieces of terminal side data generated by the communication between the terminal device and the network side are calibrated, or M pieces of data generated by the communication between the terminal device and the network side are calibrated. The time value of the network side data is calibrated.

The embodiment of the present invention also provides a time calibration device, including:

an information acquisition unit, configured to acquire the time values of N pieces of terminal-side data and the time values of M pieces of network-side data generated by the communication between the terminal and the network side; N and M are both integers; wherein, the terminal-side data data received or sent by the terminal, and the network side data is the data received or sent by the network side;

a coefficient calculation unit, configured to calculate, based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, a time error coefficient corresponding to the communication between the terminal device and the network side;

a calibration unit, configured to calibrate, based on the time error coefficient, the time values of N pieces of terminal-side data generated by the communication between the terminal device and the network side, or to calibrate the communication between the terminal device and the network side The time values of the generated M pieces of network side data are calibrated.

A time calibration method and device proposed by the present invention obtain the time difference between uplink and downlink data based on the data generated by the communication between the terminal and the network, and then calculate the time error coefficient based on the time difference, and then use the time error coefficient to adjust the terminal or network side. data to be calibrated. In this way, by analyzing and calibrating the data of a certain side one by one, problems such as data misordering caused by accumulation of errors for a long time can be avoided.

Description of drawings

1 is a schematic flowchart of a time calibration method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a communication scenario according to an embodiment of the present invention;

3 is a schematic flowchart of a time calibration calculation process according to an embodiment of the present invention;

4 is a schematic diagram of information collection according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the composition of a time calibration device according to an embodiment of the present invention.

Detailed ways

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

Embodiment 1.

An embodiment of the present invention provides a time calibration method, as shown in FIG. 1 , including:

Step 101: Acquire the time values of N pieces of terminal-side data and the time values of M pieces of network-side data generated by the communication between the terminal device and the network side; N and M are both integers; wherein, the terminal-side data is the Data received or sent by the terminal, and the network side data is the data received or sent by the network side;

Step 102: Calculate, based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, a time error coefficient corresponding to the communication between the terminal device and the network side;

Step 103: Based on the time error coefficient, calibrate the time values of N pieces of terminal-side data generated by the communication between the terminal device and the network side, or, The time values of the M pieces of network side data are calibrated.

For the time value of the terminal side data and the time value of the network side data, please refer to FIG. 2 , in which the data TAi sent by the terminal device are the time values corresponding to the terminal side data, and TBj is the time value corresponding to the network side data. where i and j are both integers. Generally speaking, N and M can be the same, that is to say, when a business process is executed, the total amount of data sent and received by the terminal and the total amount of data received and sent by the network side may be the same. Excluding special cases, for example, when the terminal does not receive the data sent from the network side, it may not send the corresponding response information. In this case, N and M are different values. The specific communication situation is not exhaustive in this embodiment.

It can be understood that when acquiring these communication data, in addition to the time values of N pieces of terminal-side data and M pieces of network-side data, it should also be able to obtain the transmission of each piece of terminal-side data and network-side data. Or the receiving direction, for example, whether the i-th terminal-side data is sent uplink data or received downlink data. The specific acquisition method may be acquired from the management device side on the network side or reported by the terminal, which is not exhaustive in this embodiment.

The calculating and obtaining the time error coefficient corresponding to the communication between the terminal device and the network side based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, including:

The first piece of terminal-side data is obtained from the N pieces of terminal-side data; the first piece of terminal-side data represents the earliest piece of data in the N pieces of terminal-side data;

The first piece of network-side data is obtained from the M pieces of terminal-side data; the first piece of network-side data represents the oldest piece of data in the M pieces of network-side data;

Based on the time values corresponding to the first piece of terminal-side data and the first piece of network-side data, a calculation method based on the time error coefficient is determined, and the time error coefficient is calculated based on the calculation method.

Specifically, determining the calculation method based on the time error coefficient based on the time values corresponding to the first piece of terminal-side data and the first piece of network-side data, including:

When the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data, it is determined to use the first calculation method to calculate the time error coefficient; otherwise, it is determined to use the second calculation method to calculate the time error coefficient. Time error coefficient; the scenario where the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data may be caused by a certain service process triggered by the terminal side. For example, when the terminal initiates a call service, it can be The terminal sends a request to the network, then in this service, the time value of the first piece of data on the terminal will be less than the time value of the first piece of data on the network side; otherwise, it may be a service scenario triggered by the network side, here No further description will be given.

Correspondingly, the calculation based on the calculation method to obtain the time error coefficient includes:

When it is determined to adopt the first calculation method, the maximum downlink time difference and the minimum uplink time difference are calculated based on the N pieces of terminal-side data and the M pieces of network-side data, and at least based on the maximum downlink time difference and the minimum uplink time difference, calculate obtain the time error coefficient;

When it is determined that the second calculation method is adopted, the maximum uplink time difference and the minimum downlink time difference are calculated based on the N pieces of terminal side data and the M pieces of network side data, at least based on the maximum uplink time difference and the minimum downlink time difference. the time error coefficient.

Calculate the time error coefficient based on at least the maximum downlink time difference and the minimum uplink time difference, and further include:

Subtract the maximum downlink time difference from the minimum uplink time difference to obtain the first difference value, subtract the first uplink data transmission time value on the terminal side from the terminal side last downlink data reception time value to obtain the second difference value, and compare the first difference value with The ratio of the second difference is used as the time error coefficient.

Further, in this calculation, it is also possible to first determine whether the maximum downlink time difference is not greater than the minimum uplink time difference, and if so, the calculation may not be performed, otherwise, the above-mentioned calculation is performed based on at least the maximum uplink time difference and the minimum downlink time difference. Calculation of the time error coefficient.

Regarding the above calculation method for calculating the time error coefficient based on at least the maximum uplink time difference and the minimum downlink time difference, specifically, when the time value of the first piece of data on the network side is greater than the time of the first piece of data on the terminal side value, the maximum downlink time difference DownVlaueMax and the minimum uplink time difference UpVlaueMin are calculated. Since DownVlaueMax≤UpVlaueMin, time synchronization can only be performed, so the calculation method of the time error coefficient is:

k=(DownVlaueMax-UpVlaueMin)/(UpMinUETime-DownMaxUETime), so that the adjusted time difference ensures that DownVlaueMax≤UpVlaueMin;

Wherein, UpMinUETime represents the sending time value of the first uplink data on the terminal side; DownMaxUETime represents the receiving time value of the last downlink data on the terminal side.

In addition, calculating and obtaining the time error coefficient based on at least the maximum uplink time difference and the minimum downlink time difference, further comprising:

Subtract the maximum uplink time difference from the minimum downlink time difference to obtain the third difference value, subtract the last uplink data transmission time value from the first downlink data reception time value on the terminal side to obtain the fourth difference value, and compare the third difference value with the The ratio of the fourth difference is used as the time error coefficient.

When the time value of the first piece of data on the network side is smaller than the time value of the first piece of data on the terminal side, UpVlaueMax and DownVlaueMin are calculated. When UpVlaueMax≤DownVlaueMin, time synchronization can be performed, so the time error coefficient k=(UpVlaueMax-DownVlaueMin)/( DownMinUETime-UpMaxUETime);

Wherein, DownMinUETime represents the time value of the first piece of downlink data received on the terminal side; UpMaxUETime represents the time value of the last piece of uplink data sent on the terminal side.

The calibrating the time values of N pieces of terminal-side data generated by the communication between the terminal device and the network side includes:

Calculate the time difference i between the i-th terminal-side data and the first terminal-side data; wherein, i is an integer greater than or equal to 0 and less than or equal to N; based on the multiplication of the time difference i and the time error coefficient, and then The result obtained by adding the time value of the i-th terminal-side data as the time value of the i-th terminal-side data after calibration;

Calibrating the time values of M pieces of network side data generated by the communication between the terminal device and the network side, including:

Calculate the time difference j between the jth piece of network-side data and the first piece of network-side data; wherein, j is an integer greater than or equal to 0 and less than or equal to M; based on the multiplication of the time difference j and the time error coefficient, and then The result obtained by adding the time value of the j-th piece of network-side data is taken as the time value of the i-th piece of network-side data after calibration.

Based on the time error coefficient, the data on one side is calibrated at all times to ensure relative synchronization with the data clock on the other side. For example, time calibration of all data on the UE side:

Time=TAi-TA0;

new TAi=TAi+(Time_hour*3600+Time_minute*60+Time_second)*k;

The time includes parameters of hour, minute, and second, respectively, and the calculation is performed based on the parameters of hour, minute, and second, and the time error coefficient, and then TAi is calibrated to obtain a new TAi.

The UE side data or network side data after the clock calibration is performed, and then time synchronization is performed, so that the business process logic can be restored as a whole.

Referring to FIG. 3 , a calculation process is provided for the processing method provided by this embodiment: first, the time difference between uplink and downlink data is calculated to obtain a list of time difference between uplink and downlink data, which are DownValueList and UpValueList respectively;

Determine whether the time value of the first piece of data on the terminal side is greater than the time value of the first piece of data on the network side;

If so, extract the maximum uplink time difference and the minimum downlink time difference from the list of uplink and downlink data time differences; then judge whether the uplink maximum time difference is greater than the downlink minimum time difference, and if so, based on k=(DownVlaueMax-UpVlaueMin)/(UpMinUETime-DownMaxUETime ) calculates the time error coefficient, and then calculates the calibrated time value based on the time error coefficient;

Otherwise, extract the maximum downlink time difference and the minimum uplink time difference from the list of uplink and downlink data time differences, and judge whether the maximum downlink time difference is not less than the minimum uplink time difference. time error coefficient, and then calculate the calibrated time value based on the time error coefficient.

Finally, it introduces how to obtain the data generated by the communication between the terminal and the network side. See Figure 4. Commercial drive tests and open source tools are used to extract the original signaling data, air interface measurement data, and user plane data on the terminal side, and export standard format data. Apply mainstream signaling monitoring systems/meters to synchronously collect the original signaling and user plane data of the core network, filter and extract, and export standard format data; then use the clock compensation multi-source data synchronization device to perform relative clock calibration on signaling/service data , to obtain the signaling/service data after clock compensation; and then through the processing of signaling/service process matching equipment and time synchronization equipment, the overall restoration of signaling and service process logic on the terminal and the network side is realized.

It can be seen that by adopting the above scheme, the time difference between the uplink and downlink data can be obtained based on the data generated by the communication between the terminal and the network, and then the time error coefficient can be calculated based on the time difference, and then the data on the terminal or the network side can be processed by using the time error coefficient. calibration. In this way, by analyzing and calibrating the data of a certain side one by one, problems such as data misordering caused by accumulation of errors for a long time can be avoided.

Embodiment two,

An embodiment of the present invention provides a time calibration device, as shown in FIG. 5 , including:

The information acquisition unit 51 is used to acquire the time values of N pieces of terminal side data and the time values of M pieces of network side data generated by the communication between the terminal and the network side; N and M are both integers; wherein, the terminal side The data is the data received or sent by the terminal, and the network side data is the data received or sent by the network side;

A coefficient calculation unit 52, configured to calculate a time error coefficient corresponding to the communication between the terminal device and the network side based on the time values of the N pieces of terminal side data and the time values of the M pieces of network side data;

A calibration unit 53, configured to calibrate, based on the time error coefficient, the time values of N pieces of terminal-side data generated by the communication between the terminal device and the network side, or to perform a calibration between the terminal device and the network side The time value of the M pieces of network side data generated by the communication is calibrated.

The apparatus provided by the embodiment of the present invention may be set on the network side, and specifically may be set on a management device in the network, and the specific set location is not exhaustive in this embodiment.

For the time value of the terminal side data and the time value of the network side data, please refer to FIG. 2 , in which the data TAi sent by the terminal device are the time values corresponding to the terminal side data, and TBj is the time value corresponding to the network side data. where i and j are both integers. Generally speaking, N and M can be the same, that is to say, when a business process is executed, the total amount of data sent and received by the terminal and the total amount of data received and sent by the network side may be the same. Excluding special cases, for example, when the terminal does not receive the data sent from the network side, it may not send the corresponding response information. In this case, N and M are different values. The specific communication situation is not exhaustive in this embodiment.

It can be understood that when acquiring these communication data, in addition to the time values of N pieces of terminal-side data and M pieces of network-side data, it should also be able to obtain the transmission of each piece of terminal-side data and network-side data. Or the receiving direction, for example, whether the i-th terminal-side data is sent uplink data or received downlink data. The specific acquisition method may be acquired from the management device side on the network side or reported by the terminal, which is not exhaustive in this embodiment.

the coefficient calculation unit, configured to obtain the first piece of terminal-side data from the N pieces of terminal-side data; the first piece of terminal-side data represents the earliest piece of data among the N pieces of terminal-side data;

The first piece of network-side data is obtained from the M pieces of terminal-side data; the first piece of network-side data represents the oldest piece of data in the M pieces of network-side data;

Based on the time values corresponding to the first piece of terminal-side data and the first piece of network-side data, a calculation method based on the time error coefficient is determined, and the time error coefficient is calculated based on the calculation method.

Specifically, the coefficient calculation unit is configured to determine to use a first calculation method to calculate the time error coefficient when the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data , otherwise, determine to use the second calculation method to calculate the time error coefficient; the generation scenario where the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data may be caused by a certain service process triggered by the terminal side For example, when the terminal initiates a call service, the terminal can send a request to the network, then in this service, the time value of the first piece of data on the terminal will be smaller than the time value of the first piece of data on the network side; otherwise, It may be a service scenario triggered by the network side, which will not be repeated here.

Correspondingly, the coefficient calculation unit is configured to, when it is determined to adopt the first calculation method, calculate the maximum downlink time difference and the minimum uplink time difference based on the N pieces of terminal-side data and the M pieces of network-side data, at least based on The maximum downlink time difference and the minimum uplink time difference are calculated to obtain the time error coefficient;

When it is determined that the second calculation method is adopted, the maximum uplink time difference and the minimum downlink time difference are calculated based on the N pieces of terminal side data and the M pieces of network side data, at least based on the maximum uplink time difference and the minimum downlink time difference. the time error coefficient.

a coefficient calculation unit, configured to subtract the minimum uplink time from the maximum downlink time difference to obtain the first difference value, and subtract the first uplink data transmission time value on the terminal side from the terminal side last downlink data reception time value to obtain the second difference value, The ratio of the first difference to the second difference is used as the time error coefficient.

Further, in this calculation, it is also possible to first determine whether the maximum downlink time difference is not greater than the minimum uplink time difference, and if so, the calculation may not be performed, otherwise, the above-mentioned calculation is performed based on at least the maximum uplink time difference and the minimum downlink time difference. Calculation of the time error coefficient.

Regarding the above calculation method for calculating the time error coefficient based on at least the maximum uplink time difference and the minimum downlink time difference, specifically, when the time value of the first piece of data on the network side is greater than the time of the first piece of data on the terminal side value, calculate the maximum downlink time difference DownVlaueMax and the minimum uplink time difference UpVlaueMin, since DownVlaueMax≤UpVlaueMin, time synchronization can be carried out, so the time error coefficient k=(DownVlaueMax-UpVlaueMin)/(UpMinUETime-DownMaxUETime), so that the adjusted time difference guarantees DownVlaueMax ≤UpVlaueMin.

In addition, the coefficient calculation unit is configured to subtract the minimum downlink time difference from the maximum uplink time difference to obtain a third difference value, and subtract the last uplink data transmission time value from the first downlink data reception time value on the terminal side to obtain a fourth difference value, The ratio of the third difference value to the fourth difference value is used as the time error coefficient.

When the time value of the first piece of data on the network side is smaller than the time value of the first piece of data on the terminal side, UpVlaueMax and DownVlaueMin are calculated. When UpVlaueMax≤DownVlaueMin, time synchronization can be performed, so the time error coefficient k=(UpVlaueMax-DownVlaueMin)/( DownMinUETime-UpMaxUETime).

The calibration unit is specifically used to calculate the time difference i between the i-th terminal-side data and the first terminal-side data; wherein, i is an integer greater than or equal to 0 and less than or equal to N; based on the time difference i and all The time error coefficient is multiplied, and the result obtained by adding the time value of the i-th terminal side data is used as the time value of the i-th terminal-side data after calibration;

and / or,

Calculate the time difference j between the jth piece of network-side data and the first piece of network-side data; wherein, j is an integer greater than or equal to 0 and less than or equal to M; based on the multiplication of the time difference j and the time error coefficient, and then The result obtained by adding the time value of the j-th piece of network-side data is taken as the time value of the i-th piece of network-side data after calibration.

Based on the time error coefficient, the data on one side is calibrated at all times to ensure relative synchronization with the data clock on the other side. For example, time calibration of all data on the UE side:

Time=TAi-TA0

new TAi=TAi+(Time_hour*3600+Time_minute*60+Time_second)*k;

The time includes parameters of hour, minute, and second, respectively, and the calculation is performed based on the parameters of hour, minute, and second, and the time error coefficient, and then TAi is calibrated to obtain a new TAi.

The UE side data or network side data after the clock calibration is performed, and then time synchronization is performed, so that the business process logic can be restored as a whole.

Referring to Fig. 3, a calculation flow is provided for the processing method provided by the present embodiment: firstly, a list of time difference between uplink and downlink data is obtained by calculation, and a list of time difference between uplink and downlink data is obtained, which are DownValueList and UpValueList respectively; then it is judged whether the time value of the first piece of data on the terminal side is greater than The time value of the first piece of data on the network side;

If so, extract the maximum uplink time difference and the minimum downlink time difference from the list of uplink and downlink data time differences; then judge whether the uplink maximum time difference is greater than the downlink minimum time difference, and if so, based on k=(DownVlaueMax-UpVlaueMin)/(UpMinUETime-DownMaxUETime ) calculates the time error coefficient, and then calculates the calibrated time value based on the time error coefficient;

Otherwise, extract the maximum downlink time difference and the minimum uplink time difference from the list of uplink and downlink data time differences, and judge whether the maximum downlink time difference is not less than the minimum uplink time difference. time error coefficient, and then calculate the calibrated time value based on the time error coefficient.

Finally, it introduces how to obtain the data generated by the communication between the terminal and the network side. See Figure 4. Commercial drive tests and open source tools are used to extract the original signaling data, air interface measurement data, and user plane data on the terminal side, and export standard format data. Using mainstream signaling monitoring systems/meters, synchronously collect the original signaling and user plane data of the core network, filter and extract data, export standard format data, and use clock compensation multi-source data synchronization equipment to perform relative clock calibration on signaling/service data. The processing of signaling/business process matching equipment and time synchronization equipment realizes the overall restoration of signaling and business process logic.

It can be seen that by adopting the above scheme, the time difference between the uplink and downlink data can be obtained based on the data generated by the communication between the terminal and the network, and then the time error coefficient can be calculated based on the time difference, and then the data on the terminal or the network side can be processed by using the time error coefficient. calibration. In this way, by analyzing and calibrating the data of a certain side one by one, problems such as data misordering caused by accumulation of errors for a long time can be avoided.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or server comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or server. Without further limitation, an element qualified by the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article, or server that includes the element.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields , are similarly included in the scope of patent protection of the present invention.

Claims (4)

1. a time calibration method, is characterized in that, described method comprises: Obtain the time values of N pieces of terminal-side data received or sent by the terminal generated by the communication between the terminal device and the network side, and the time values of M pieces of network-side data received or sent by the network side; N and M are both integers; Based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, a time error coefficient corresponding to the communication between the terminal device and the network side is obtained by calculation; The time value of the terminal side data and the time value of the M pieces of network side data are calculated to obtain the time error coefficient corresponding to the communication between the terminal device and the network side, including: When the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data, determine to use the first calculation method to calculate the time error coefficient; otherwise, determine to use the second calculation method to calculate the time error coefficient; Wherein, the first piece of terminal-side data represents the oldest piece of data among the N pieces of terminal-side data; the first piece of network-side data represents the oldest piece of data among the M pieces of network-side data; When it is determined to adopt the first calculation method, based on the N pieces of terminal-side data and the M pieces of network-side data, the maximum downlink time difference and the minimum uplink time difference are calculated, and the maximum downlink time difference is subtracted from the minimum uplink time difference to obtain the first difference. The second difference is obtained by subtracting the first uplink data sending time value on the terminal side from the last downlink data receiving time value on the terminal side, and the ratio of the first difference value to the second difference value is used as the time error coefficient; When it is determined to adopt the second calculation method, based on the N pieces of terminal side data and the M pieces of network side data, the maximum uplink time difference and the minimum downlink time difference are calculated, and the maximum uplink time difference is subtracted from the minimum downlink time difference to obtain a third difference value, subtract the last uplink data transmission time value of the terminal side from the first downlink data reception time value on the terminal side to obtain the fourth difference value, and use the ratio of the third difference value to the fourth difference value as the time error coefficient; Based on the time error coefficient, the time difference i between the i-th piece of terminal-side data and the first piece of terminal-side data is calculated; wherein, i is an integer greater than or equal to 0 and less than or equal to N; based on the time difference i and the The time error coefficient is multiplied, and the result obtained by adding the time value of the i-th terminal-side data is used as the time value of the i-th terminal-side data after calibration; Or, based on the time error coefficient, the time difference j between the jth piece of network-side data and the first piece of network-side data is calculated; wherein, j is an integer greater than or equal to 0 and less than or equal to M; based on the time difference j and The time error coefficient is multiplied, and the result obtained by adding the time value of the jth piece of network side data is taken as the time value of the jth piece of network side data after calibration. 2. The method according to claim 1, characterized in that, before the third difference is obtained by subtracting the minimum downlink time difference from the maximum uplink time difference, the method further comprises: Determine whether the maximum uplink time difference is greater than the minimum downlink time difference; if so, perform the calculation of obtaining the time error coefficient based on at least the maximum uplink time difference and the minimum downlink time difference, otherwise, do not perform the calculation of the time error coefficient; Before obtaining the first difference by subtracting the minimum uplink time difference from the maximum downlink time difference, the method further includes: Determine whether the maximum downlink time difference is greater than the minimum uplink time difference; if so, perform the calculation of the time error coefficient based on at least the maximum downlink time difference and the minimum uplink time difference, otherwise, do not calculate the time error coefficient. 3. A time calibration device, wherein the device comprises: an information acquisition unit, configured to acquire the time values of N pieces of terminal-side data received or sent by the terminal generated by the communication between the terminal device and the network side, and the time values of M pieces of network-side data received or sent by the network side; N and M is an integer; a coefficient calculation unit, configured to calculate, based on the time values of the N pieces of terminal-side data and the time values of the M pieces of network-side data, a time error coefficient corresponding to the communication between the terminal device and the network side; a calibration unit, configured to calibrate, based on the time error coefficient, the time values of N pieces of terminal-side data generated by the communication between the terminal device and the network side, or to calibrate the communication between the terminal device and the network side The time value of the generated M pieces of network side data is calibrated; The coefficient calculation unit is specifically configured to, when the time value of the first piece of network-side data is greater than the time value of the first piece of terminal-side data, determine to use the first calculation method to calculate the time error coefficient; otherwise, determine to use the second The time error coefficient is calculated by a calculation method; wherein, the first piece of terminal-side data represents the earliest piece of data among the N pieces of terminal-side data; the first piece of network-side data represents the M pieces of network-side data The earliest data in the middle time; When it is determined to adopt the first calculation method, based on the N pieces of terminal side data and the M pieces of network side data, the maximum downlink time difference and the minimum uplink time difference are calculated, and the maximum downlink time difference is subtracted from the minimum uplink time difference to obtain the first A difference value, the second difference value is obtained by subtracting the transmission time value of the first piece of uplink data on the terminal side from the receiving time value of the last piece of downlink data on the terminal side, and the ratio of the first difference value to the second difference value is used as the said time error coefficient; When it is determined to adopt the second calculation method, based on the N pieces of terminal side data and the M pieces of network side data, the maximum uplink time difference and the minimum downlink time difference are calculated, and the maximum uplink time difference is subtracted from the minimum downlink time difference to obtain a third difference value, subtract the last uplink data transmission time value of the terminal side from the first downlink data reception time value on the terminal side to obtain the fourth difference value, and use the ratio of the third difference value to the fourth difference value as the time error coefficient; The calibration unit is specifically used to calculate the time difference i between the i-th terminal-side data and the first terminal-side data; wherein, i is an integer greater than or equal to 0 and less than or equal to N; based on the time difference i and all The time error coefficient is multiplied, and the result obtained by adding the time value of the i-th terminal side data is used as the time value of the i-th terminal-side data after calibration; And/or, the time difference j between the jth piece of network side data and the first piece of network side data is calculated; wherein, j is an integer greater than or equal to 0 and less than or equal to M; based on the time difference j and the time error coefficient Multiply, and then add the result obtained by adding the time value of the jth piece of network side data as the time value of the jth piece of network side data after calibration. 4. The device of claim 3, wherein The coefficient calculation unit is configured to determine whether the maximum uplink time difference is greater than the minimum downlink time difference before calculating the time error coefficient based on at least the maximum uplink time difference and the minimum downlink time difference; The calculation of the time error coefficient is obtained based on at least the maximum uplink time difference and the minimum downlink time difference, otherwise, the calculation of the time error coefficient is not performed; is also used to judge whether the maximum downlink time difference is greater than the minimum uplink time difference before calculating the time error coefficient based on at least the maximum downlink time difference and the minimum uplink time difference; The time difference and the minimum uplink time difference are calculated to obtain the calculation of the time error coefficient, otherwise, the calculation of the time error coefficient is not performed.

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