CN109982343A - Alien frequencies handoff threshold value determines method, apparatus, equipment and medium - Google Patents

Abstract

The invention discloses a method, device, equipment and medium for determining the threshold value of inter-frequency handover. The method includes: in measurement report data, determining a target cell RSRP set of a cell to be optimized, where the RSRP is the reference signal received power; and determining an inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set ; According to the inter-frequency handover threshold judgment value and the to-be-optimized A2 of the to-be-optimized cell, determine the A2 optimization value of the to-be-optimized cell, and the A2 is an open measurement threshold. The technical solution of the present invention can solve the problem of low optimization efficiency caused by using artificial optimization means in the traditional inter-frequency handover optimization method.

Description

Inter-frequency handover threshold determination method, device, equipment and medium

technical field

The present invention relates to the technical field of mobile communication, and in particular, to a method, apparatus, device and medium for determining an inter-frequency handover threshold value.

Background technique

With the rapid growth of 4G users, the network load is getting higher and higher, the double-layer network and multi-layer network have been built on a large scale in urban areas, and the network structure is correspondingly more and more complicated. The problem is getting worse and starting to affect the user experience and perception of using 4G network.

Inter-frequency handover strategies in the LTE system are divided into two types: A2+A3 and A2+A4. A2+A3 is the relative threshold method, and A2+A4 is the absolute threshold method. Currently, the inter-frequency handover between indoor and outdoor cells generally adopts A2 The absolute threshold method of +A4, while the inter-frequency handover between outdoor cells generally adopts the relative threshold method of A2+A3. Can the absolute threshold A2+A4 between indoor and outdoor cells ensure the normal residence of indoor users and avoid the ping-pong effect by the window; while the relative threshold A2+A3 mode between outdoor cells ensures that users can switch to the On the cell with the best signal, the signal quality of the user is guaranteed, which is beneficial to improve the user's perception.

Regardless of whether the strategy of A2+A3 or A2+A4 is adopted, the optimization focus of inter-frequency handover is how to set the A2 threshold reasonably. The A2 threshold is the threshold for enabling inter-frequency measurement, that is, if the RSRP value of the serving cell measured by the UE is less than the threshold, then The UE enables inter-frequency measurement.

At present, the A2 threshold optimization method for inter-frequency handover is still in the manual optimization stage. Through the deterioration of KPI indicators, user complaints or problems in the ATU test, it is artificially judged whether the A2 threshold needs to be raised or lowered. To sum up, it is difficult to solve the problem of inter-frequency handover index deterioration, user complaint problem or ATU handover problem in the whole network by means of artificial optimization.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, device, equipment and medium for determining an inter-frequency handover threshold value, which are used to solve the problem of low optimization efficiency caused by artificial optimization means in the traditional inter-frequency handover optimization method.

In a first aspect, an embodiment of the present invention provides a method for determining an inter-frequency handover threshold, the method comprising:

In the measurement report data, determine the target cell RSRP set of the cell to be optimized, where the RSRP is the reference signal received power;

Determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set;

According to the judgment value of the inter-frequency handover threshold and the to-be-optimized A2 of the to-be-optimized cell, the A2 optimization value of the to-be-optimized cell is determined, and the A2 is an open measurement threshold value.

In a second aspect, an embodiment of the present invention provides an apparatus for determining an inter-frequency handover threshold, the apparatus comprising:

a target cell RSRP set acquisition module, configured to determine, in the measurement report data, a target cell RSRP set of the cell to be optimized, where the RSRP is the reference signal received power;

an inter-frequency handover threshold judgment value determination module, configured to determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set;

The A2 optimization value acquisition module is configured to determine the A2 optimization value of the to-be-optimized cell according to the inter-frequency handover threshold determination value and the to-be-optimized A2 of the to-be-optimized cell, where the A2 is an open measurement threshold.

In a third aspect, an embodiment of the present invention provides a device for determining an inter-frequency handover threshold value, including: at least one processor, at least one memory, and computer program instructions stored in the memory, when the computer program instructions are executed by the processor The method of the first aspect as in the above embodiment is implemented.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the method of the first aspect in the foregoing embodiments is implemented.

The method, device, device and medium for determining the threshold value of inter-frequency handover provided by the embodiments of the present invention can realize the optimization of inter-frequency handover at the whole network level, make up for the lack of the current batch optimization method of LTE inter-frequency handover threshold, and improve the internal efficiency of the LTE system. Optimized efficiency for inter-frequency handover.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments of the present invention will be briefly introduced below. For those of ordinary skill in the art, without creative work, the Additional drawings can be obtained from these drawings.

1 shows a flowchart of a method for determining an inter-frequency handover threshold value provided by an embodiment of the present invention;

2 shows a schematic diagram of an MRE sample file provided by an embodiment of the present invention;

3 shows a flowchart of an MRE-based inter-frequency handover threshold optimization method provided by an embodiment of the present invention;

4 shows a schematic structural diagram of an apparatus for determining an inter-frequency handover threshold value provided by an embodiment of the present invention;

FIG. 5 shows a schematic diagram of the hardware structure of a device for determining an inter-frequency handover threshold value provided by an embodiment of the present invention.

Detailed ways

The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, and are not configured to limit the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element.

FIG. 1 shows a flowchart of a method for determining an inter-frequency handover threshold provided by an embodiment of the present invention. As shown in FIG. 1 , the method includes:

Step S10, in the measurement report data, determine the target cell RSRP set of the cell to be optimized, where the RSRP is the reference signal received power.

Step S20: Determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set.

Step S30, according to the inter-frequency handover threshold judgment value and the to-be-optimized A2 of the to-be-optimized cell, determine the A2 optimization value of the to-be-optimized cell, where the A2 is an open measurement threshold.

Specifically, a measurement report (hereinafter referred to as MR, Measurement Report) is important information for evaluating wireless environment quality in a mobile communication system. MRE is a file type in MR (Measurement Report). MR files include various types, for example, MRE stands for event-triggered measurement report sample data; MRO stands for periodic measurement report sample data file, excluding event-triggered sample data; MRS stands for measurement report statistics data file, only for MRO files Statistics of sample data in , excluding event-triggered measurement report sample data. In the present invention, the MRE data is used as the measurement report data to describe the embodiment.

MRE data is extracted according to the cell range that needs to be optimized. For example, cells in the entire network need to be optimized, and MRE data in the entire network needs to be extracted. If cells in a specific area need to be optimized, MRE data in the specific area needs to be extracted.

In the extracted MRE data, according to the cell identifier of the cell to be optimized, the MRE data of the cell to be optimized is screened, and the target cell RSRP set of the cell to be optimized is sorted out according to the screened MRE data. The RSRP set includes the RSRP values of all target cells that have undergone inter-frequency handover with the to-be-optimized cell. According to the RSRP set, the RSRP values of all target cells are counted when the cell to be optimized performs an inter-frequency handover event. Since the data in the RSRP set is the statistical information that has occurred in the existing network, it can truly reflect the actual network environment and device status in the existing network. After determining the inter-frequency handover threshold judgment value of the cell to be optimized according to the RSRP set, compare it with the A2 value to be optimized set in the existing network, and give the A2 optimization scheme of the cell to be optimized according to the inter-frequency handover threshold judgment value. In line with the actual environment of the network.

In this embodiment, the inter-frequency handover threshold judgment value of the cell to be optimized is given by analyzing the MRE data, and the cell A2 to be optimized is optimized according to the inter-frequency handover threshold judgment value. This embodiment extracts the MRE data within the corresponding optimization range according to the optimization requirements, which can realize the inter-frequency handover optimization at the whole network level, make up for the lack of the current batch optimization method of LTE inter-frequency handover thresholds, and improve the inter-frequency handover in the LTE system. Optimize efficiency. At the same time, it is not limited to the local optimization and adjustment of problem points, but is upgraded to the optimization and adjustment of the whole network, which reduces the workload of inter-frequency handover optimization in the LTE system and saves labor costs. Problems such as slow download speed, slow web page response, and disconnection can also be effectively solved, improving user perception.

In a possible implementation manner, step S10 in FIG. 1 includes: extracting inter-frequency handover information from event-triggered measurement report data to obtain a first inter-frequency handover information set, where the inter-frequency handover information includes a cell identifier, Source cell carrier identifier, source cell RSRP, target cell carrier identifier, and target cell RSRP;

In the first inter-frequency handover information set, delete the inter-frequency handover information with the same source cell carrier identifier and the target cell carrier identifier, to obtain a second inter-frequency handover information set;

In the second inter-frequency handover information set, delete the inter-frequency handover information whose source cell RSRP or target cell RSRP exceeds the value range to obtain a third inter-frequency handover information set;

In the third inter-frequency handover information set, the inter-frequency handover information of the cell to be optimized is screened according to the cell identifier, and a fourth inter-frequency handover information set is obtained;

In the fourth inter-frequency handover information set, the target cell RSRP of the to-be-optimized cell is extracted to obtain a target cell RSRP set of the to-be-optimized cell.

Specifically, FIG. 2 shows a schematic diagram of an MRE sample file provided by an embodiment of the present invention. As shown in FIG. 2 , the MRE data includes the frequency points and frequency points of the serving cell and neighboring cells included in each reported A3 and A4 events. RSRP value, the meaning of its key fields is shown in Table 1:

Table 1 Meaning of key fields of MRE

There is a lot of redundant information in the MRE data, and the MRE data needs to be cleaned first;

1) Only the following key fields are reserved: id (cell ID), MR.LteScEarfcn, MR.LteScRSRP, MR.LteNcEarfcn, MR.LteNcRSRP;

2) When MR.LteScEarfcn≠MR.LteNcEarfcn, keep the row of data, otherwise it will be eliminated;

3) The value range of MR.LteScRSRP and MR.LteNcRSRP ranges from 0 to 97. If the data exceeds the range, it will be excluded.

The data format after removal is as follows in Table 2:

Table 2 Sample table after data cleaning

It can be understood that the order of the above step 2) and step 3) can be interchanged with each other.

In a possible implementation manner, step S20 in FIG. 1 includes:

sorting the target cell RSRPs in the target cell RSRP set;

According to the result of the RSRP sorting of the target cell, the determination value of the inter-frequency handover threshold of the cell to be optimized is determined.

Specifically, the cleaned MRE data is aggregated according to the ID of the cell to be optimized, and the set of RSRPs of the target cell during all handovers of the cell with the ID of the cell to be optimized can be obtained. A={MR.LteNcRSRP1,MR.LteNcRSRP2,...,MR .LteNcRSRPi}; where i is the number of sampling points under the ID cell.

Next, the judgment value of the inter-frequency handover threshold is judged, and the judgment value of the inter-frequency handover threshold is the optimal handover threshold Nr of the cell to be optimized. If Nr>80% of MR.LteNcRSRP in set A is selected, then the Nr value is the optimal frequency handover threshold of the cell to be optimized.

It can be understood that, according to the coverage of the extracted MRE data, the cells in the entire network can be processed at the same time, thereby avoiding the disadvantage of manual optimization.

In a possible implementation manner, step S30 in FIG. 1 includes:

A first difference between the inter-frequency handover threshold determination value and the first threshold is calculated. When the first difference is smaller than the to-be-optimized A2 of the to-be-optimized cell, the first difference is determined to be the to-be-optimized A2 optimization value of the to-be-optimized cell.

Specifically, the first threshold is set to 135. When Nr-135 < the A2 value configured by the OMC (the A2 value to be optimized), it means that the A2 threshold is too high, and the inter-frequency measurement is started too early, and the inter-frequency measurement of the cell to be optimized can be changed. Frequency A2 is reduced to Nr-135.

In a possible implementation manner, when the first difference value is greater than the to-be-optimized A2 of the to-be-optimized cell, calculate the second difference between the RSRP of the source cell and the RSRP of the target cell in the fourth inter-frequency handover information The difference value is obtained to obtain a second difference value set; according to the second difference value set, the A2 optimization value of the to-be-optimized cell is determined.

Specifically, when Nr-135> the A2 value of the OMC configuration, it indicates that the A2 threshold of such cells may be low, and the inter-frequency measurement is started too late; further data processing is required.

In a possible implementation manner, determining the A2 optimization value of the cell to be optimized according to the second difference set includes: in the second difference set, determining a second difference greater than a second threshold comparing the determined number of second differences greater than the second threshold with the third threshold; when the determined number of second differences greater than the second threshold is greater than the third threshold, the The first difference value is determined as the A2 optimization value of the cell to be optimized.

in particular,

Set B = {MR.LteNcRSRP1-MR.LteScRSRP1,MR.LteNcRSRP2-MR.LteScRSRP2,...,MR.LteNcRSRPi-MR.LteScRSRPi}.

If 80% of the sampling points (the second threshold) in the set B are greater than 6 (the third threshold), the inter-frequency A2 of this cell can be upgraded to Nr-135.

In a possible implementation manner, when the determined number of second differences greater than the second threshold is less than or equal to the third threshold, the to-be-optimized A2 is determined as the A2 optimization value of the to-be-optimized cell.

Specifically, if 80% of the sampling points in set B are not greater than 6, keep the A2 value of the OMC configuration in the cell to be optimized.

In a possible implementation manner, the method in the present invention further includes outputting an optimization scheme. According to the MRE data processing principle, the cell ID is used for aggregation processing, and the A2 threshold optimization suggestion value of each ID cell is given, and the final optimization suggestion scheme is generated. For example, A2 optimization suggestions for all cells in the entire network are given. FIG. 3 shows a flowchart of an MRE-based inter-frequency handover threshold optimization method provided by an embodiment of the present invention. The invention mainly involves data input, data cleaning, data processing and scheme output, and can quickly give the optimal A2 threshold value for all cells in the whole network. The MRE data comes from the terminal measurement report, and the MRE big data is used to avoid the The test work of the existing network saves the workload, and can analyze and process the whole network cells, and the optimization scope is wide.

FIG. 4 shows a schematic structural diagram of an apparatus for determining an inter-frequency handover threshold value provided by an embodiment of the present invention. As shown in FIG. 4 , the apparatus includes:

The target cell RSRP set acquisition module 61 is configured to determine, in the measurement report data, the target cell RSRP set of the cell to be optimized, where the RSRP is the reference signal received power;

an inter-frequency handover threshold determination value determination module 62, configured to determine the inter-frequency handover threshold determination value of the cell to be optimized according to the target cell RSRP set;

The A2 optimization value acquisition module 63 is configured to determine the A2 optimization value of the to-be-optimized cell according to the inter-frequency handover threshold judgment value and the to-be-optimized cell's A2, where the A2 is an open measurement threshold.

In a possible implementation manner, the target cell RSRP set acquisition module 61 includes:

The first inter-frequency handover information set acquisition sub-module is used to extract the inter-frequency handover information from the event-triggered measurement report data to obtain the first inter-frequency handover information set, where the inter-frequency handover information includes a cell identifier, a source cell carrier identifier , source cell RSRP, target cell carrier identifier, target cell RSRP;

The second inter-frequency handover information set acquisition sub-module is configured to delete the inter-frequency handover information with the same source cell carrier identifier and the target cell carrier identifier in the first inter-frequency handover information set, and obtain a second inter-frequency handover information set ;

The third inter-frequency handover information set acquisition sub-module is configured to delete the inter-frequency handover information whose source cell RSRP or target cell RSRP exceeds the value range in the second inter-frequency handover information set, and obtain third inter-frequency handover information gather;

a fourth inter-frequency handover information set acquisition submodule, configured to screen out the inter-frequency handover information of the cell to be optimized in the third inter-frequency handover information set according to the cell identifier, and obtain a fourth inter-frequency handover information set;

The target cell RSRP set acquisition sub-module is configured to extract the target cell RSRP of the to-be-optimized cell in the fourth inter-frequency handover information set to obtain the target cell RSRP set of the to-be-optimized cell.

In a possible implementation manner, the inter-frequency handover threshold determination value determination module 62 includes:

a sorting submodule, configured to sort the target cell RSRPs in the target cell RSRP set;

The inter-frequency handover threshold judgment value determination sub-module is configured to determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the result of the RSRP sorting of the target cell.

In a possible implementation manner, the A2 optimization value obtaining module 63 includes:

a first difference calculation submodule, configured to calculate the first difference between the inter-frequency handover threshold judgment value and the first threshold;

The first A2 optimization value acquisition sub-module is configured to determine the first difference value as the A2 optimization value of the to-be-optimized cell when the first difference value is smaller than the to-be-optimized A2 of the to-be-optimized cell.

In a possible implementation manner, the A2 optimization value obtaining module 63 further includes:

The second difference calculation submodule is configured to calculate the first difference between the RSRP of the source cell and the RSRP of the target cell in the fourth inter-frequency handover information when the first difference is greater than the to-be-optimized A2 of the to-be-optimized cell Two difference values to obtain a second set of difference values;

The second A2 optimization value obtaining sub-module is configured to determine the A2 optimization value of the to-be-optimized cell according to the second difference set.

In a possible implementation manner, the second A2 optimized value acquisition submodule includes:

a quantity determination unit, configured to determine the quantity of second difference values greater than a second threshold in the second difference value set;

a comparison unit, configured to compare the determined number of the second difference greater than the second threshold with the third threshold;

A third A2 optimization value determining unit, configured to determine the first difference value as the A2 optimization value of the cell to be optimized when the determined number of second difference values greater than the second threshold value is greater than the third threshold value.

In a possible implementation manner, the second A2 optimized value acquisition submodule further includes:

The fourth A2 optimization value determination unit is configured to determine the to-be-optimized A2 as the A2 optimization value of the to-be-optimized cell when the determined number of second differences greater than the second threshold is less than or equal to the third threshold. In addition, the method for determining an inter-frequency handover threshold value according to the embodiment of the present invention described in conjunction with FIG. 1 may be implemented by a device for determining an inter-frequency handover threshold value. FIG. 5 shows a schematic diagram of a hardware structure of a device for determining an inter-frequency handover threshold value provided by an embodiment of the present invention.

The device for determining an inter-frequency handover threshold value may include a processor 401 and a memory 402 storing computer program instructions.

Specifically, the above-mentioned processor 401 may include a central processing unit (CPU), or a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits implementing the embodiments of the present invention.

Memory 402 may include mass storage for data or instructions. By way of example and not limitation, memory 402 may include a Hard Disk Drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape or Universal Serial Bus (USB) drive or two or more A combination of more than one of the above. Memory 402 may include removable or non-removable (or fixed) media, where appropriate. Memory 402 may be internal or external to the data processing device, where appropriate. In certain embodiments, memory 402 is non-volatile solid state memory. In particular embodiments, memory 402 includes read only memory (ROM). Where appropriate, the ROM may be a mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically rewritable ROM (EAROM) or flash memory or A combination of two or more of the above.

The processor 401 reads and executes the computer program instructions stored in the memory 402 to implement any one of the methods for determining an inter-frequency handover threshold value in the foregoing embodiments.

In one example, the device for determining the inter-frequency handover threshold value may further include a communication interface 403 and a bus 410 . Among them, as shown in FIG. 5 , the processor 401 , the memory 402 , and the communication interface 403 are connected through the bus 410 and complete the mutual communication.

The communication interface 403 is mainly used to implement communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.

The bus 410 includes hardware, software, or both, coupling the components of the inter-frequency handover threshold determination device to each other. By way of example and not limitation, the bus may include Accelerated Graphics Port (AGP) or other graphics bus, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), HyperTransport (HT) Interconnect, Industry Standard Architecture (ISA) Bus, Infiniband Interconnect, Low Pin Count (LPC) Bus, Memory Bus, Microchannel Architecture (MCA) Bus, Peripheral Component Interconnect (PCI) Bus, PCI-Express (PCI-X) Bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or a combination of two or more of the above. Bus 410 may include one or more buses, where appropriate. Although embodiments of the present invention describe and illustrate a particular bus, the present invention contemplates any suitable bus or interconnect.

In addition, in combination with the method for determining an inter-frequency handover threshold value in the foregoing embodiment, the embodiment of the present invention may provide a computer-readable storage medium for implementation. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by the processor, any one of the methods for determining an inter-frequency handover threshold value in the foregoing embodiments is implemented.

It is to be understood that the present invention is not limited to the specific arrangements and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above-described embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the sequence of steps after comprehending the spirit of the present invention.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, elements of the invention are programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted over a transmission medium or communication link by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and the like. The code segments may be downloaded via a computer network such as the Internet, an intranet, or the like.

It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be different from the order in the embodiments, or several steps may be performed simultaneously.

The above are only specific implementations of the present invention. Those skilled in the art can clearly understand that, for the convenience and simplicity of the description, the specific working process of the above-described systems, modules and units may refer to the foregoing method embodiments. The corresponding process in , will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all cover within the protection scope of the present invention.

Claims (10)

1. A method for determining an inter-frequency handover threshold, wherein the method comprises: In the measurement report data, determine the target cell reference signal received power RSRP set of the cell to be optimized; Determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set; According to the inter-frequency handover threshold judgment value and the to-be-optimized cell's to-be-optimized open measurement threshold value A2, the A2 optimization value of the to-be-optimized cell is determined. 2. The method according to claim 1, wherein, in the measurement report data, determining the target cell reference signal received power RSRP set of the cell to be optimized, comprising: Inter-frequency handover information is extracted from the event-triggered measurement report data to obtain a first inter-frequency handover information set, where the inter-frequency handover information includes cell ID, source cell carrier ID, source cell RSRP, target cell carrier ID, and target cell RSRP ; In the first inter-frequency handover information set, delete the inter-frequency handover information with the same source cell carrier identifier and the target cell carrier identifier, to obtain a second inter-frequency handover information set; In the second inter-frequency handover information set, delete the inter-frequency handover information whose source cell RSRP or target cell RSRP exceeds the value range to obtain a third inter-frequency handover information set; In the third inter-frequency handover information set, the inter-frequency handover information of the cell to be optimized is screened according to the cell identifier, and a fourth inter-frequency handover information set is obtained; In the fourth inter-frequency handover information set, the target cell RSRP of the to-be-optimized cell is extracted to obtain a target cell RSRP set of the to-be-optimized cell. 3. The method according to claim 1, wherein determining the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set, comprising: sorting the target cell RSRPs in the target cell RSRP set; According to the result of the RSRP sorting of the target cell, the determination value of the inter-frequency handover threshold of the cell to be optimized is determined. 4. The method according to claim 2, wherein, according to the inter-frequency handover threshold judgment value and the to-be-optimized cell to be optimized open measurement threshold value A2, determine the to-be-optimized cell A2 optimization value ,include: calculating the first difference between the inter-frequency handover threshold judgment value and the first threshold; When the first difference is smaller than the to-be-optimized A2 of the to-be-optimized cell, the first difference is determined to be the to-be-optimized A2 optimization value of the to-be-optimized cell. 5. The method according to claim 4, wherein the method further comprises: When the first difference is greater than the to-be-optimized A2 of the to-be-optimized cell, calculate the second difference between the RSRP of the source cell and the RSRP of the target cell in the fourth inter-frequency handover information to obtain a second set of differences ; According to the second difference set, the A2 optimization value of the cell to be optimized is determined. 6. The method according to claim 5, wherein determining the A2 optimization value of the to-be-optimized cell according to the second difference set, comprising: In the second set of difference values, determining the number of second difference values greater than a second threshold; comparing the determined number of second differences greater than the second threshold with the third threshold; When the determined number of second difference values greater than the second threshold value is greater than the third threshold value, the first difference value is determined as the A2 optimization value of the cell to be optimized. 7. The method according to claim 6, wherein the method further comprises: When the determined number of second differences greater than the second threshold is less than or equal to the third threshold, the to-be-optimized A2 is determined as the A2 optimization value of the to-be-optimized cell. 8. An apparatus for determining an inter-frequency handover threshold value, characterized in that, comprising: The target cell reference signal received power RSRP set acquisition module is used to determine, in the measurement report data, the target cell RSRP set of the cell to be optimized; an inter-frequency handover threshold judgment value determination module, configured to determine the inter-frequency handover threshold judgment value of the to-be-optimized cell according to the target cell RSRP set; The A2 optimization value acquisition module is configured to determine the A2 optimization value of the to-be-optimized cell according to the inter-frequency handover threshold determination value and the to-be-optimized cell's to-be-optimized open measurement threshold value A2. 9. A device for determining an inter-frequency handover threshold value, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, when the computer program instructions are executed by the processor The method of any one of claims 1-7 is implemented when executed. 10. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, when the computer program instructions are executed by a processor, the method according to any one of claims 1-7 is implemented.