CN115568008A - Method, device, electronic device and storage medium for sending lead command - Google Patents

Abstract

The application provides a method and a device for sending an advance command, electronic equipment and a storage medium, relates to the technical field of communication, and aims to send the advance command TAC including accurate time advance. The method comprises the following steps: measuring respective time lead of various reference signals reported by a user terminal in a lead command TAC sending period; processing the respective time advance of the multiple reference signals to obtain a characteristic value of the respective time advance of the multiple reference signals; according to the characteristic values of the respective time advance of the multiple reference signals, fusing the characteristic values of the time advance of the multiple reference signals to obtain the time advance sent periodically; and sending the TAC when the TAC sending period is finished, wherein the TAC comprises the time advance sent by the period.

Description

Method, device, electronic device and storage medium for sending lead command

technical field

The present application relates to the field of communication technology, and in particular to a method, device, electronic equipment and storage medium for sending an advance command.

Background technique

There is often a difference between the time when the user terminal transmits a signal to the network-side device and the theoretical transmission time, and the difference will cause the network-side device to fail to receive the signal in a preset time slot. If the network side device receives signals transmitted by two user terminals at the same time slot, interference may occur between the signals of the two user terminals. In order to solve this problem, the network testing device sends a TAC (Timing Advance Command, advance command) to the user terminal, and the user terminal sends a signal in advance according to the TA value (Timing Advance, timing advance) included in the TAC, so that the network side device can Signals are received on preset time slots.

However, as the location of the user terminal changes, the time for the user terminal to transmit signals to the network side equipment also changes, so that the TA value included in the TAC also needs to change accordingly. The TA value can be measured according to the signal sent by the user terminal, but for the situation where the location of the user terminal changes rapidly, the measured TA value may have problems such as inaccuracy and large fluctuations.

Contents of the invention

In view of the above problems, embodiments of the present application provide a method, device, electronic device, and storage medium for sending an advance command, so as to overcome the above problems or at least partially solve the above problems.

The first aspect of the embodiments of the present application provides a method for sending an advance command, including:

Measuring the respective timing advances of various reference signals reported by the user terminal within the sending period of the advance command TAC;

Processing respective timing advances of the various reference signals to obtain eigenvalues of respective timing advances of the various reference signals;

According to the eigenvalues of the respective timing advances of the various reference signals, merging the eigenvalues of the timing advances of the various reference signals to obtain the timing advances for periodic transmission;

A TAC is sent at the end of a TAC sending period, the TAC including a timing advance for the periodic sending.

Optionally, the various reference signals include a first type of reference signal and a second type of reference signal; the characteristic value of the time advance is an average value of the time advance; according to the respective time advances of the various reference signals The eigenvalues of the quantity, the eigenvalues of the timing advances of the multiple reference signals are fused, including:

Determine the first reference signal and the second The weights corresponding to each of the reference signals;

According to the respective weights corresponding to the first-type reference signal and the second-type reference signal, the average value of the time advance of the first-type reference signal and the difference between the time advance of the second-type reference signal average for fusion.

Optionally, the first type of reference signal is a sounding reference signal SRS, and the second type of reference signal is a demodulation reference signal DMRS; according to the average value of the timing advance of the first type of reference signal, and the The difference between the average values of the timing advances of the second type of reference signal to determine the corresponding weights of the first type of reference signal and the second type of reference signal, including:

When the absolute value of the difference between the average value of the time advance of the SRS and the average value of the time advance of the DMRS is greater than the first threshold, determine that the weight corresponding to the SRS is the first weight, and determine that the weight corresponding to the DMRS is The weight of is the second weight, and the first weight is greater than the second weight;

When the absolute value of the difference between the average value of the time advance of the SRS and the average value of the time advance of the DMRS is not greater than the first threshold, determine that the weight corresponding to the SRS is the third weight, and, Determine that the weight corresponding to the DMRS is the fourth weight, where the third weight is smaller than the fourth weight.

Optionally, one of the multiple reference signals is a sounding reference signal SRS; the method further includes:

Determine whether the fluctuation range of the timing advance of the SRS exceeds a preset range;

When the fluctuation range of the timing advance of the SRS exceeds the preset range, within the TAC sending period, whenever the target timing advance occurs, a TAC is sent, and the TAC includes the latest target timing advance, so The target timing advance is determined according to the average value of the timing advances of the SRS measured in the TAC sending period.

Optionally, the characteristic value of the timing advance of the SRS includes: the standard deviation and the average value of the timing advance of the SRS; determining whether the fluctuation range of the timing advance of the SRS exceeds a preset range, including:

Determine whether the fluctuation range of the SRS timing advance exceeds a preset range according to the standard deviation of the SRS timing advance;

The target timing advance is determined through the following steps:

In the TAC sending period, determine the absolute value of the difference between the newly measured timing advance of the SRS and the average value of the timing advance of the SRS;

If the absolute value of the difference corresponding to the latest measured SRS timing advance is greater than the second threshold, the latest measured SRS timing advance is determined as the target timing advance.

Optionally, the multiple reference signals include SRS and DMRS; measuring the respective timing advances of various reference signals reported by the user terminal within the TAC sending period of the advance command includes:

Measuring the respective timing advances of the N SRSs reported by the user terminal within the TAC transmission period, where N is determined according to the SRS transmission period and the time-domain resource occupancy of the SRS within the TAC transmission period;

Measuring the respective timing advances of the M DMRSs reported by the user terminal within the TAC transmission period, where M is determined according to the DMRS transmission period and the time-domain resource occupancy of the DMRS within the TAC transmission period.

The second aspect of the embodiment of the present application provides a device for sending an advance command, including:

The measurement module is used to measure the respective timing advances of various reference signals reported by the user terminal within the sending period of the advance command TAC;

A processing module, configured to process the respective timing advances of the various reference signals to obtain the characteristic values of the respective timing advances of the various reference signals;

A fusion module, configured to fuse the eigenvalues of the timing advances of the various reference signals according to the respective eigenvalues of the timing advances of the various reference signals, to obtain the timing advances for periodic transmission;

A sending module, configured to send the TAC at the end of the TAC sending period, where the TAC includes the timing advance of the periodic sending.

A third aspect of the embodiments of the present application provides an electronic device, including: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement The method for sending an advance command as described in the first aspect.

The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, and when the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device can perform the steps described in the first aspect. The method for sending the advance command.

A fifth aspect of the embodiments of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the method for sending an advance command as described in the first aspect is implemented.

The embodiment of the present application includes the following advantages:

In this embodiment, the respective timing advances of various reference signals reported by the user terminal within the period of sending the advance command TAC are measured; the respective timing advances of the various reference signals are processed to obtain the various reference signals The respective eigenvalues of timing advances; according to the eigenvalues of the respective timing advances of the various reference signals, merging the eigenvalues of the timing advances of the various reference signals to obtain the timing advances for periodic transmission; in the TAC A TAC is sent at the end of the sending cycle, and the TAC includes the timing advance of the sending cycle. In this way, because the characteristic values of the respective timing advances of various reference signals are obtained by processing the respective timing advances of various reference signals, on the one hand, the characteristic values of the respective timing advances of various reference signals can reflect the The characteristics of the respective time advances of the signals, so it can be determined how to fuse the eigenvalues of the time advances of various reference signals according to the characteristic values of the respective time advances of various reference signals; on the other hand, for various reference signals By fusing the eigenvalues of the timing advances, the timing advances of the periodic transmission included in the TAC can be obtained, and the eigenvalues of the respective timing advances of various reference signals are obtained by processing the respective timing advances of various reference signals , therefore, the timing advance of periodic transmission is more accurate and less fluctuating than the respective timing advances of various reference signals. Furthermore, sending the TAC including the timing advance of periodic sending can solve the problem of intersymbol interference caused by overlapping uplink time slots between user terminals.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is a flow chart of the steps of a method for sending an advance command in an embodiment of the present application;

FIG. 2 is a schematic flow diagram of a method for sending an advance command according to an embodiment of the present application;

Fig. 3 is a flowchart of the method for sending an advance command according to an embodiment of the present application;

Fig. 4 is another flow chart of the method for sending an advance command according to an embodiment of the present application;

Fig. 5 is a block diagram of an apparatus for sending an advance command according to an embodiment of the present application.

detailed description

In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

In fast-moving scenarios such as high-speed rail, the distance between the UE (User Equipment, user terminal) and the base station changes rapidly, resulting in large fluctuations or inaccurate measurement of the TA value of the signal sent by the user terminal. Therefore, if directly based on the measurement The obtained TA value is used to send the TAC, which will cause the transmitted TAC to be inaccurate and cause the uplink time slots between UEs in the cell to overlap each other, causing inter-symbol interference, resulting in KPI indicators (Key Performance Indicator, key performance indicator, etc.) indicator) seriously deteriorates, seriously affecting the user experience in scenarios such as high-speed rail. Especially for high-speed rail scenarios in 5G, the above problems are particularly obvious. In order to solve the above-mentioned technical problems, this application proposes a method for sending an advance command, by performing a series of processing on the measured timing advances of various reference signals, an accurate and less fluctuating periodic transmission timing advance can be obtained .

Referring to FIG. 1 , it shows a flow chart of a method for sending an advance command in an embodiment of the present application. The method for sending an advance command can be applied to network-side devices, such as base stations, 5G NR (New Radio, new air interface) base station, etc. As shown in Figure 1, the method for sending the lead command may specifically include the following steps:

Step S11: measure the respective timing advances of various reference signals reported by the user terminal within the sending period of the advance command TAC.

Step S12: Process the respective timing advances of the various reference signals to obtain eigenvalues of the respective timing advances of the various reference signals;

Step S13: According to the characteristic values of the respective timing advances of the various reference signals, the eigenvalues of the timing advances of the various reference signals are fused to obtain the periodic transmission timing advances;

Step S14: Sending the TAC at the end of the TAC sending period, where the TAC includes the timing advance of the periodic sending.

The user terminal sends multiple reference signals to the network side device in real time, and each reference signal sent at different times has a different timing advance. The network side device may measure the timing advance of each reference at each moment. When the timing advance of the reference signal fluctuates greatly, the TAC generated by the base station based on the timing advance of the reference signal at the previous moment may not be suitable for the reference signal to be sent by the user terminal at the current moment.

The base station sends the TAC to the user terminal periodically, and sends the timing advance of periodic transmission to the user terminal at the end of each TAC sending cycle. The timing advance sent in one cycle is obtained by processing respective timing advances of various reference signals received in the cycle.

In order to process respective timing advances of various reference signals received in a period, it is necessary to measure respective timing advances of various reference signals reported by the user terminal within the TAC sending period. Processing the respective timing advances of multiple reference signals to obtain the characteristic values of the respective timing advances of the multiple reference signals, the respective characteristic values of the respective timing advances of the multiple reference signals include at least any one or more of the following: average value, standard deviation, and expectation. Among them, in order to obtain different eigenvalues, different processing is required.

For example, the average value of the time advance of the reference signal can be obtained by the following formula:

AVG(TA signal)=(TA signal(1)+TA signal(2)+......+TA signal(n))/n

Among them, signal represents the reference signal; n is a positive integer representing the number of the reference signal reported within one TAC transmission period; TA represents the timing advance; AVG (TA signal) represents the average value of the timing advance of the reference signal.

The standard deviation of the timing advance of the reference signal can be obtained by the following formula:

SIGMA(TA signal)＝sqrt(((TA signal(1)-AVG(TA signal))^2+(TA signal(2)-AVG(TA signal)^2+.....+(TA signal( n)-AVG(TA signal))^2)/(n-1))

Among them, SIGMA (TA signal) represents the standard deviation of the timing advance of the reference signal, sqrt represents the square root calculation, and the meanings of other symbols can refer to the above.

The expectation of the timing advance of the reference signal can be obtained by the following formula:

EXP(TA signal)＝p(1)*TA signal(1)+p(2)*TA signal(2)+......+p(n)*TA signal(n)

Wherein, EXP (TA signal) represents the expectation of the timing advance of the reference signal, and p represents the probability, and the meanings of other symbols can be referred to above.

The eigenvalues of the time advances of various reference signals can represent various meanings. For example, the average value can reflect the overall size of multiple time advances, the standard deviation can reflect the dispersion of time advances, and the expectation can reflect the time advances. The size of the average value of . Therefore, the fusion mode may be determined according to the respective eigenvalues of the timing advances of various reference signals, and according to the determined fusion mode, the eigenvalues of the timing advances of the various reference signals may be fused to obtain the timing advance of periodic transmission quantity. For example, the standard deviation of the timing advance of a reference signal whose TA value changes more sensitively is relatively large, and it can be analyzed that the user terminal may be in a fast-moving scene at this time. Therefore, the timing advance of the reference signal is more in line with the real and accurate timing advance Therefore, when obtaining the timing advance of periodic transmission, the timing advance of the reference signal can be used more, and the timing advance of the reference signal with a smaller standard deviation of the timing advance can be used less.

The eigenvalue of the fused timing advance may be an average value of the timing advance or an expectation of the timing advance. The average value of the timing advance of a reference signal or the expectation of the timing advance synthesizes the magnitudes of multiple timing advances of the reference signal in the TAC sending period. Therefore, by fusing the average value or expectation of the timing advances of various reference signals, the obtained periodic transmission timing advances can more accurately reflect the respective multiple timing advances of various reference signals, while ignoring the reference signals The fluctuation of the timing advance.

At the end of the TAC transmission period, that is, at the end of the transmission period, the TAC including the timing advance of periodic transmission is sent to the user terminal, so that the user terminal transmits in advance according to the timing advance of periodic transmission included in the TAC information.

By adopting the technical solution of the embodiment of the present application, because the characteristic values of the respective timing advances of various reference signals are obtained by processing the respective timing advances of various reference signals, on the one hand, the respective timing advances of various reference signals The eigenvalues can reflect the characteristics of the timing advances of the various reference signals, so how to fuse the eigenvalues of the timing advances of the various reference signals can be determined according to the eigenvalues of the respective timing advances of the various reference signals; On the one hand, the eigenvalues of the timing advances of various reference signals are fused to obtain the timing advances of the periodic transmission included in the TAC, and the eigenvalues of the respective timing advances of the various reference signals are the respective eigenvalues of the various reference signals Therefore, the timing advances sent periodically are more accurate and less fluctuating than the respective timing advances of various reference signals. Furthermore, sending the TAC including the timing advance of periodic sending can solve the problem of intersymbol interference caused by overlapping uplink time slots between user terminals.

Optionally, on the basis of the above technical solution, the multiple reference signals include a first type of reference signal and a second type of reference signal; the characteristic value of the timing advance is the average value of the timing advance; according to the The eigenvalues of the timing advances of the various reference signals, and fusing the eigenvalues of the timing advances of the various reference signals, include: the average value of the timing advances of the first type of reference signal and the first The difference between the average values of the timing advances of the two types of reference signals is used to determine the weights corresponding to the first type of reference signal and the second type of reference signal; according to the first type of reference signal and the second type of reference signal The weights corresponding to the two types of reference signals are fused with the average value of the time advance of the first type of reference signal and the average value of the time advance of the second type of reference signal.

The eigenvalues of the respective timing advances of the two fused reference signals may be an average or expectation of the respective timing advances of the two reference signals. In the case where the eigenvalues of the respective timing advances of the two reference signals are the average values of the respective timing advances of the two reference signals, the difference between the average values of the respective timing advances of the two reference signals can be first value, determine the weight of each reference signal, and fuse the average value of the timing advances of the two reference signals according to the respective weights of each reference signal. Wherein, the sum of the weights of the two reference signals is 1.

The average value of the timing advances of the two reference signals can be fused by the following formula to obtain the timing advance of periodic transmission:

OBJ(TA)＝r1*AVG(TA signal 1)+(1-r1)*AVG(TA signal 2)

Among them, OBJ(TA) is the timing advance of periodic transmission, signal 1 represents the first type of reference signal, signal2 represents the second type of reference signal, r1 represents the weight of the first type of reference signal, and AVG represents the average value.

In the case where the eigenvalues of the respective timing advances of the two reference signals are respectively the expectations of the respective timing advances of the two reference signals, the difference between the expectations of the respective timing advances of the two reference signals may be firstly calculated, The weight of each reference signal is determined, and the average value of the timing advances of the two reference signals is fused according to the respective weights of each reference signal. Wherein, the sum of the weights of the two reference signals is 1.

The timing advance of the two reference signals can be fused by the following formula to obtain the timing advance of periodic transmission:

OBJ(TA)＝r1*EXP(TA signal 1)+(1-r1)*EXP(TA signal 2)

Among them, EXP represents expectation, and the meaning of other characters can refer to the above.

In this way, because of the average value of the timing advance of the reference signal or the expectation of the timing advance, multiple timing advances of the reference signal in the TAC transmission period are integrated. Therefore, the average value or expectation of the timing advances of various reference signals is fused, and the obtained periodic transmission timing advances can more accurately reflect the magnitudes of multiple timing advances of the various reference signals. And because the timing advance of one cycle transmission is obtained according to multiple timing advances of each kind of reference signal, the problem of timing advance fluctuation can be well avoided.

Optionally, on the basis of the above technical solution, the first reference signal may be SRS (Sounding Reference Signal, sounding reference signal), and the second reference signal may be DMRS (Demodulation Reference Signal, demodulation signal) sent through PUSCH (uplink channel). reference signal). In fast-moving scenes such as high-speed rail, SRS usually fluctuates greatly but is more accurate, and DMRS fluctuates less but is less accurate.

When the timing advance of periodic transmission is obtained based on the respective timing advances of SRS and DMRS, the absolute value of the difference between the average value of the timing advance of SRS and the average value of the timing advance of DMRS can be compared with the first The size relationship of the threshold determines the respective weights of the SRS and the DMRS. Similarly, weights corresponding to the SRS and DMRS may also be determined according to the relationship between the absolute value of the difference between the average value of the SRS timing advance and the expected DMRS timing advance and the threshold. Wherein, the first threshold may be set according to actual conditions.

If the absolute value of the difference between the average value of the time advance of the SRS and the average value of the time advance of the DMRS is greater than the first threshold, the average value of the time advance of the DMRS and the average value of the time advance of the SRS The gap is large. Because the time advance of SRS is relatively accurate, therefore, in the case of a large difference between the average values of the two, it can be proved that the time advance of DMRS is not very accurate. Therefore, the average value of the time advance of the two When merging, the timing advance of the SRS should dominate.

Therefore, when the absolute value of the difference between the average value of the timing advance of the SRS and the average value of the timing advance of the DMRS is greater than the first threshold, it may be determined that the weight corresponding to the SRS is the first weight, and, Determine the weight corresponding to the DMRS as the second weight, where the first weight is greater than the second weight. The sum of the first weight and the second weight is 1.

If the absolute value of the difference between the average value of the time advance of the SRS and the average value of the time advance of the DMRS is not greater than the first threshold, then the average value of the time advance of the DMRS and the average of the time advance of the SRS The value difference is small. Because the time advance of SRS is relatively accurate, therefore, in the case of a large difference between the average values of the two, it can be proved that the time advance of DMRS is also relatively accurate, and at the same time, the time advance of DMRS also has the advantage of less fluctuation , therefore, when the average value of the timing advances of the two is fused, the timing advance of the DMRS should play a dominant role.

Therefore, when the absolute value of the difference between the average value of the timing advance of the SRS and the average value of the timing advance of the DMRS is not greater than the first threshold, it can be determined that the weight corresponding to the SRS is the third weight, and , determining that the weight corresponding to the DMRS is a fourth weight, where the third weight is smaller than the fourth weight. The sum of the third weight and the fourth weight is 1.

In this way, when the average value of the timing advances of the two reference signals is fused, more attention can be paid to the timing advance of the reference signal with better performance, so that the obtained periodic transmission timing advances are more accurate and fluctuate less .

Optionally, on the basis of the above technical solution, one of the multiple reference signals may be a sounding reference signal SRS. In a case where a reference signal is an SRS, it may be determined whether the fluctuation range of the timing advance of the SRS exceeds a preset range. When the fluctuation range of the timing advance of the SRS exceeds the preset range, within the TAC sending period, whenever the target timing adjustment occurs, a TAC is sent, and the TAC includes the latest target timing advance, so The target timing advance is determined according to the average value of the timing advances of the SRS measured in the TAC sending period.

In the case that the fluctuation range of the SRS timing advance does not exceed the preset range, it proves that the fluctuation of the SRS timing advance is small. Therefore, the timing advance sent periodically is sufficient to reflect the accurate timing advance. You only need to press Periodically transmit a TAC including a timing advance for the periodic transmission at the end of the TAC transmission period.

When the fluctuation range of the SRS timing advance exceeds the preset range, it may be due to the occurrence of a large SRS timing advance, which may cause the timing advance sent periodically to be insufficient to reflect the accurate timing advance. , so in addition to periodically sending the TAC including the timing advance sent periodically at the end of the TAC sending period, it is also necessary to send the target timing advance not periodically. The target timing advance is determined according to the average value of the timing advances of the SRS measured in the TAC sending period.

The sending of the TAC including the target timing advance and the sending of the TAC including the periodically sending timing advance do not interfere with each other. The TAC including the target timing advance is sent immediately each time the target timing advance occurs. The TAC including the timing advance of periodic sending is sent periodically at the end of the TAC sending period.

In this way, when the fluctuation range of the timing advance of SRS is large, the timing advance of periodic transmission based on the average value may not accurately reflect the accurate timing advance of SRS, and the transmission target timing advance can make up for the periodical transmission. The gap between the timing advance and the exact timing advance. Therefore, the user terminal performs signal transmission according to the TAC sent periodically and the TAC sent aperiodically, so that the network side equipment can receive the information sent by the user terminal in a preset time slot.

Optionally, on the basis of the above technical solution, the time characteristic value of the SRS may include the standard deviation and the average value of the time advance of the SRS. Whether the fluctuation range of the timing advance of the SRS exceeds the preset range may be determined according to the standard deviation of the timing advance of the SRS. The target timing advance may be determined according to the average value or expectation of the timing advance of the SRS.

Since the standard deviation can reflect the degree of dispersion of the timing advance, when the standard deviation of the SRS timing advance is greater than a preset threshold, it can be determined that the fluctuation range of the SRS timing advance exceeds the preset range. Wherein, the preset threshold can be set according to actual requirements.

However, when the fluctuation range of the timing advance of the SRS exceeds the preset range, the magnitude of the timing advance of the SRS may occasionally appear particularly large. In this case, it is necessary to send the TAC to make up the gap between the time advance sent by the period and the exact time advance. The target timing advance is the timing advance of the SRS with a particularly large amplitude.

During the TAC transmission period, the timing advance of each received SRS will be measured in real time. Calculates the absolute value of the difference between the SRS timing advance and the average of the SRS timing advances, the absolute value of the difference between the latest measured SRS timing advance and the average of the SRS timing advances If the value is greater than the second threshold, it proves that the magnitude of the latest measured SRS timing advance is particularly large, and therefore, the SRS timing advance can be determined as the target timing advance. Wherein, the second threshold can be set according to actual requirements.

The target timing advance can be expressed by the formula TAnp=TAsrs(i), wherein, TAnp is the target timing advance, TAsrs(i) is the latest measured SRS timing advance, and TAsrs(i) and the SRS time advance The absolute value of the difference between the mean values of the quantities is greater than a second threshold.

In this way, the target timing advance is the timing advance of the SRS with a larger amplitude, and directly sending the TAC including the target timing advance can bridge the gap between the periodically sent timing advance and the accurate timing advance.

Optionally, on the basis of the above technical solution, when the various reference signals include SRS and DMRS; measuring the respective timing advances of the various reference signals reported by the user terminal within the TAC sending period of the advance command may include: measuring the The respective timing advances of the N SRSs reported by the user terminal within the TAC transmission period, and measuring the respective timing advances of the M DMRSs reported by the user terminal within the TAC transmission period. Among them, N is a positive integer determined according to the SRS transmission period and the time domain resource occupation of the SRS within the TAC transmission period; M is a positive integer determined according to the DMRS transmission period and the time domain resource occupation of the DMRS within the TAC transmission period.

The value of N can be obtained by dividing the transmission period of the TAC by the transmission period of the SRS; the value of M can be obtained by dividing the transmission period of the TAC by the transmission period of the DMRS. Based on the values of N and M, it is convenient to calculate characteristic values such as the average value, expectation and standard deviation of the timing advance of the SRS and the timing advance of the DMRS.

FIG. 2 shows a schematic flowchart of a method for sending an advance command according to an embodiment of the present application. Wherein, the respective TA values of the SRS and the DMRS are measured respectively, and the characteristic values of the respective TA values of the SRS and the DMRS are obtained. The TA adjustment and sending decision maker determines whether to send the TAC periodically or send the TAC periodically+aperiodically based on the characteristic values of the TA values of the SRS and the DMRS. Calculate the TA value included in the TAC to be sent, and send the TAC.

FIG. 3 is a flowchart of a method for sending an advance command according to an embodiment of the present application. Wherein, the reference signals are SRS and DMRS. In this embodiment, the respective TA values of the SRS and the DMRS may be measured first, and the characteristic values of the respective TA values of the SRS and the DMRS may be calculated. Based on whether the standard deviation of the SRS timing advance is greater than a preset threshold A, it is determined whether the fluctuation range of the SRS timing advance exceeds a preset range. When the standard deviation of the timing advance of the SRS is greater than the preset threshold, it is further judged whether the absolute value of the difference between the average value of the TA value of the SRS and the average value of the TA value of the DMRS is greater than the first threshold B.

In the case where the standard deviation of the SRS timing advance is greater than the preset threshold, and the absolute value of the difference between the average value of the TA value of the SRS and the average value of the TA value of the DMRS is greater than the first threshold, according to the period sending the TAC including the timing advance amount sent periodically, and sending the TAC including the target timing advance amount aperiodically, wherein the weight of the average value of the timing advance amount of the SRS in the timing advance amount of the periodic sending amount is greater than that of the timing advance amount of the DMRS The weight of the average.

In the case where the standard deviation of the timing advance of the SRS is greater than the preset threshold, and the absolute value of the difference between the average value of the TA value of the SRS and the average value of the TA value of the DMRS is not greater than the first threshold value, according to periodically sending the TAC including the timing advance of periodic sending, and sending the TAC including the target timing advance aperiodically, wherein the weight of the average value of the timing advance of SRS in the timing advance of periodic sending is smaller than the timing advance of DMRS The average weight of .

In the case where the standard deviation of the timing advance of the SRS is not greater than the preset threshold, and the absolute value of the difference between the average value of the TA value of the SRS and the average value of the TA value of the DMRS is greater than the first threshold value, according to The periodical transmission includes the TAC of the periodic transmission timing advance, wherein the weight of the average value of the SRS timing advance in the periodical transmission timing advance is greater than the weight of the average value of the DMRS timing advance.

In the case where the standard deviation of the timing advance of the SRS is not greater than the preset threshold, and the absolute value of the difference between the average value of the TA value of the SRS and the average value of the TA value of the DMRS is not greater than the first threshold, The TAC including the periodically sent timing advance is sent periodically, wherein the weight of the average value of the SRS timing advance in the periodically sent timing advance is smaller than the weight of the average value of the DMRS timing advance.

Fig. 4 is another flow chart of the method for sending an advance command according to the embodiment of the present application. The flow shown in FIG. 4 is different from the flow shown in FIG. 3 only in the order of the judgment conditions, but the results pointed to by the conditions with the same judgment result are essentially the same.

By adopting the technical solution of the embodiment of the present application, the difference between the obtained periodic transmission timing advance and target timing advance and the real and accurate timing advance is relatively small. Therefore, sending the TAC including the timing advance amount sent periodically, and sending the TAC including the target timing advance amount can make the information sent by the user terminal be received in the preset time slot, thereby solving the problem caused by the inaccurate TAC. The overlap of uplink time slots between internal UEs causes inter-symbol interference, serious deterioration of KPI indicators such as uplink rate and dropped call rate, which is conducive to improving user experience.

It should be noted that, for the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present application is not limited by the described action sequence, because According to the embodiment of the present application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present application.

Fig. 5 is a block diagram of a device for sending an advance command according to an embodiment of the present application. As shown in Fig. 5, the device includes: a measurement module, a processing module, a fusion module and a sending module, wherein:

The measurement module is used to measure the respective timing advances of various reference signals reported by the user terminal within the sending period of the advance command TAC;

A processing module, configured to process the respective timing advances of the various reference signals to obtain the characteristic values of the respective timing advances of the various reference signals;

A fusion module, configured to fuse the eigenvalues of the timing advances of the various reference signals according to the respective eigenvalues of the timing advances of the various reference signals, to obtain the timing advances for periodic transmission;

A sending module, configured to send the TAC at the end of the TAC sending period, where the TAC includes the timing advance of the periodic sending.

Optionally, the multiple reference signals include a first reference signal and a second reference signal; the characteristic value of the timing advance is an average value of the timing advance; the fusion module includes:

a weight determination unit, configured to determine the first type of reference according to the difference between the average value of the timing advance of the first type of reference signal and the average value of the timing advance of the second type of reference signal the respective weights corresponding to the signal and the second reference signal;

a fusion unit, configured to, according to the respective weights corresponding to the first-type reference signal and the second-type reference signal, combine the average value of the time advance of the first-type reference signal with the second-type reference signal The average of the time advances is fused.

Optionally, the first type of reference signal is a sounding reference signal SRS, and the second type of reference signal is a demodulation reference signal DMRS; the weight determination unit includes:

The first weight determination subunit is used to determine the weight corresponding to the SRS when the absolute value of the difference between the average value of the time advance of the SRS and the average value of the time advance of the DMRS is greater than the first threshold. a first weight, and determining that the weight corresponding to the DMRS is a second weight, and the first weight is greater than the second weight;

The second weight determination subunit is used to determine the SRS corresponding The weight corresponding to the DMRS is determined to be the third weight, and the weight corresponding to the DMRS is determined to be the fourth weight, where the third weight is smaller than the fourth weight.

Optionally, one of the multiple reference signals is a sounding reference signal SRS; the device further includes:

A range determination module, configured to determine whether the fluctuation range of the timing advance of the SRS exceeds a preset range;

The TAC sending module is configured to send a TAC whenever a target timing advance occurs within the TAC sending cycle when the fluctuation range of the timing advance of the SRS exceeds the preset range, and the TAC includes the latest A target timing advance, where the target timing advance is determined according to an average value of SRS timing advances measured within a TAC sending period.

Optionally, the characteristic value of the time advance of the SRS includes: the standard deviation and the average value of the time advance of the SRS; the range determination module includes:

A range determining unit, configured to determine whether the fluctuation range of the timing advance of the SRS exceeds a preset range according to the standard deviation of the timing advance of the SRS;

The target timing advance is determined through the following steps:

In the TAC sending period, determine the absolute value of the difference between the newly measured timing advance of the SRS and the average value of the timing advance of the SRS;

If the absolute value of the difference corresponding to the latest measured SRS timing advance is greater than the second threshold, the latest measured SRS timing advance is determined as the target timing advance.

Optionally, the multiple reference signals include SRS and DMRS; the measurement module includes:

The first measurement unit is configured to measure the respective timing advances of the N SRSs reported by the user terminal within the TAC transmission period, where N is determined according to the SRS transmission period and the time-domain resource occupation of the SRS within the TAC transmission period of;

The second measurement unit is used to measure the respective time advances of the M DMRSs reported by the user terminal in the TAC transmission period, where M is determined according to the DMRS transmission period and the time-domain resource occupancy of the DMRS in the TAC transmission period of.

It should be noted that the system embodiment is similar to the method embodiment, so the description is relatively simple, and relevant parts can be referred to the method embodiment.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Those skilled in the art should understand that the embodiments of the embodiments of the present application may be provided as methods, devices or computer program products. Therefore, the embodiment of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, devices, electronic devices, and computer program products according to the embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor or processor of other programmable data processing terminal equipment to produce a machine such that instructions executed by the computer or processor of other programmable data processing terminal equipment Produce a system for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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

These computer program instructions can also be loaded into a computer or other programmable data processing terminal equipment, so that a series of operational steps are performed on the computer or other programmable terminal equipment to produce computer-implemented processing, thereby The instructions executed above provide steps for implementing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

While the preferred embodiments of the embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is understood. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the application.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

The method, device, electronic equipment, and storage medium for sending an advance command provided by the present application have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present application. The above embodiments The description is only used to help understand the method of the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation and application scope, in summary , the contents of this specification should not be construed as limiting the application.

Claims (10)

1. A method for transmitting an advance command, comprising:

measuring respective time lead of various reference signals reported by a user terminal in a lead command TAC sending period;

processing the respective time advance of the multiple reference signals to obtain a characteristic value of the respective time advance of the multiple reference signals;

according to the characteristic values of the respective time advance of the multiple reference signals, fusing the characteristic values of the time advance of the multiple reference signals to obtain the time advance sent periodically;

and sending the TAC when the TAC sending period is finished, wherein the TAC comprises the time advance sent by the period.

2. The method of claim 1, wherein the plurality of reference signals comprises a first reference signal and a second reference signal; the characteristic value of the time lead is the average value of the time lead; fusing the characteristic values of the time advance of the multiple reference signals according to the characteristic values of the time advance of the multiple reference signals respectively, wherein the fusing comprises the following steps:

determining weights corresponding to the first reference signal and the second reference signal according to a difference value between the average value of the time advance of the first reference signal and the average value of the time advance of the second reference signal;

and according to the weights corresponding to the first reference signal and the second reference signal respectively, fusing the average value of the time advance of the first reference signal and the average value of the time advance of the second reference signal.

3. The method of claim 2, wherein the first reference signal is a Sounding Reference Signal (SRS), and wherein the second reference signal is a demodulation reference signal (DMRS); determining, according to a difference between an average value of the timing advances of the first reference signal and an average value of the timing advances of the second reference signal, weights corresponding to the first reference signal and the second reference signal, respectively, including:

determining the weight corresponding to the SRS to be a first weight and determining the weight corresponding to the DMRS to be a second weight when the absolute value of the difference between the average value of the timing advance of the SRS and the average value of the timing advance of the DMRS is larger than a first threshold, wherein the first weight is larger than the second weight;

and under the condition that the absolute value of the difference value between the average value of the SRS time advance and the average value of the DMRS time advance is not larger than the first threshold, determining the weight corresponding to the SRS as a third weight, and determining the weight corresponding to the DMRS as a fourth weight, wherein the third weight is smaller than the fourth weight.

4. The method of claim 1, wherein one of the plurality of reference signals is a Sounding Reference Signal (SRS); the method further comprises the following steps:

determining whether the fluctuation range of the time advance of the SRS exceeds a preset range;

and under the condition that the fluctuation range of the time advance of the SRS exceeds the preset range, in a TAC transmission period, whenever a target time advance appears, the TAC is transmitted, the TAC comprises the latest appearing target time advance, and the target time advance is determined according to the average value of the time advances of the SRS measured in the TAC transmission period.

5. The method of claim 4, wherein the characteristic value of the timing advance of the SRS comprises: standard deviation and mean of timing advance of SRS; determining whether the fluctuation range of the time advance of the SRS exceeds a preset range or not, including:

determining whether the fluctuation range of the time lead of the SRS exceeds a preset range or not according to the standard deviation of the time lead of the SRS;

the target time advance is determined by the following steps:

determining the absolute value of the difference between the latest measured SRS time lead and the average value of the SRS time lead in a TAC sending period;

and determining the latest measured SRS time advance as the target time advance when the absolute value of the difference value corresponding to the latest measured SRS time advance is larger than a second threshold.

6. The method of any of claims 1-5, wherein the plurality of reference signals comprise SRS and DMRS; the method for measuring the respective time advance of various reference signals reported by a user terminal in an advance command TAC sending period comprises the following steps:

measuring respective time lead of N SRSs reported by the user terminal in a TAC (terminal equipment) sending period, wherein N is determined according to the SRS sending period and the time domain resource occupation condition of the SRS in the TAC sending period;

and measuring respective time lead of M DMRSs reported by the user terminal in a TAC (cell access control) sending period, wherein M is determined according to the sending period of the DMRS and the time domain resource occupation condition of the DMRS in the TAC sending period.

7. An advance command transmission apparatus, comprising:

the measurement module is used for measuring the respective time lead of various reference signals reported by the user terminal in a lead command TAC sending period;

the processing module is used for processing the respective time advance of the multiple reference signals to obtain the characteristic values of the respective time advance of the multiple reference signals;

the fusion module is used for fusing the characteristic values of the time lead of the various reference signals according to the characteristic values of the respective time lead of the various reference signals to obtain the time lead sent periodically;

and the sending module is used for sending the TAC when the TAC sending period is finished, wherein the TAC comprises the time advance sent by the period.

8. An electronic device, comprising:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute the instructions to implement the method of transmission of an advance command according to any one of claims 1 to 6.

9. A computer readable storage medium having instructions which, when executed by a processor of an electronic device, enable the electronic device to perform the method of transmitting the advance command of any of claims 1 to 6.

10. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the method of transmitting the advance command of any of claims 1 to 6.

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