Intermodulation interference processing method, device, equipment, storage medium and program product

Abstract

The embodiment of the invention discloses an intermodulation interference processing method and device, equipment, a storage medium and a program product. The intermodulation interference processing method comprises the following steps: determining the number of feature interfered physical resource blocks of a target cell and the corresponding downlink service volume; determining that the target cell is interfered by uplink PIM based on the positive correlation between the number of the feature interfered physical resource blocks and the downlink service volume; and determining an uplink and downlink resource scheduling strategy of the target cell interfered by the uplink PIM. By implementing the technical scheme of the embodiment of the invention, the processing efficiency of intermodulation interference can be improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a method, apparatus, device, storage medium, and program product for processing intermodulation interference. Background Technology

[0002] Due to factors such as uneven metal surfaces and temperature variations in antenna feeder systems, broadband or multi-frequency carrier signals may generate passive intermodulation (PIM) signals when passing through these systems. If these PIM signals fall into the uplink frequency band, they constitute PIM interference. To eliminate this PIM interference, relevant technical solutions typically calculate the frequency overlap range between the uplink frequency band and the theoretical PIM interference, thereby determining the available frequency bands in the downlink carrier and performing unified, yielding resource allocation for the downlink signal to prevent impact on uplink reception.

[0003] However, the above scheme cannot accurately locate the PIM-affected cell, which requires frequency overlap calculation for all cells. The resulting invalid calculation for a large number of normal cells affects the efficiency of intermodulation interference processing. Summary of the Invention

[0004] This application provides a method, apparatus, device, storage medium, and program product for processing intermodulation interference, addressing some of the deficiencies mentioned in the background art.

[0005] In a first aspect, embodiments of this application provide a method for processing intermodulation interference, including: The number of disturbed physical resource blocks and the corresponding downlink traffic volume of the target cell are determined. The number of disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than a first preset interference threshold, and that the uplink noise floor value shows a continuous rising feature in the frequency domain. Based on the positive correlation between the number of disturbed physical resource blocks and the downlink traffic volume, it is determined that the target cell is subject to uplink PIM interference. Determine the uplink and downlink resource scheduling strategy for the target cell that is affected by uplink PIM interference.

[0006] In one embodiment of the first aspect, before determining the number of characteristic disturbed physical resource blocks of the target cell, the method further includes: Obtain the daily average uplink interference for the cell; The cell whose average uplink interference is greater than a second preset interference threshold is identified as the target cell.

[0007] In one embodiment of the first aspect, the preset filtering conditions further include: The physical resource block is located within the maximum uplink disturbance range.

[0008] In one embodiment of the first aspect, the maximum uplink disturbance interval is determined based on the landing point of the third-order intermodulation component generated by the downlink channel carrier frequency within the uplink frequency range.

[0009] In one embodiment of the first aspect, determining the number of the disturbed physical resource blocks includes: Obtain the first physical resource block and the corresponding uplink noise floor value of the target cell; From the first physical resource block, determine the second physical resource block that is located within the maximum uplink disturbance range and has an uplink noise floor value greater than the first preset interference threshold. From the second physical resource block, determine a third physical resource block whose number is consecutive and whose quantity meets a preset consecutive quantity threshold; From the third physical resource block, a fourth physical resource block is determined whose uplink noise floor value increases with the increase of the frequency domain number; The number of disturbed physical resource blocks is determined based on the number of the fourth physical resource blocks.

[0010] In one embodiment of the first aspect, the number of disturbed physical resource blocks and the downlink traffic volume are determined based on data with a time granularity of hours.

[0011] In one embodiment of the first aspect, determining that the target cell is subject to uplink PIM interference includes: Based on the number of disturbed physical resource blocks and the corresponding downlink traffic volume of the target cell in multiple statistical periods, the correlation coefficient between the two is calculated and the confidence interval is determined. If the confidence interval meets the preset numerical conditions, it is determined that the target cell is subject to uplink PIM interference. The preset numerical conditions include a positive lower bound for the confidence interval.

[0012] In one embodiment of the first aspect, determining the uplink / downlink resource scheduling strategy for the target cell affected by uplink PIM interference includes: The schedulable frequency range of the uplink channel is determined, wherein the frequency corresponding to the physical resource block with the smallest frequency domain number among the characteristic disturbed physical resource blocks is taken as the highest frequency of the schedulable frequency range of the uplink channel. Based on the schedulable frequency range of the uplink channel, the frequency domain allocation position of the physical random access channel is determined; Based on the schedulable frequency range of the uplink channel, the schedulable frequency range of the downlink channel is determined. Based on the mapping relationship between the downlink synchronization signal block and the transmission timing of the physical random access channel, within the schedulable frequency range of the downlink channel, the frequency position of the synchronization signal block corresponding to the frequency domain allocation position of the physical random access channel is determined as the configuration position of the synchronization signal block.

[0013] Secondly, embodiments of this application provide an intermodulation interference processing apparatus, comprising: The first determining module is used to determine the number of characteristic disturbed physical resource blocks of the target cell and the corresponding downlink traffic volume. The number of characteristic disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than the first preset interference threshold, and the uplink noise floor value shows a continuous rising feature in the frequency domain. The second determining module determines that the target cell is subject to uplink PIM interference based on the positive correlation between the number of disturbed physical resource blocks and the downlink traffic volume. The third determining module determines the uplink and downlink resource scheduling strategy for the target cell affected by uplink PIM interference.

[0014] Thirdly, an electronic device includes a memory, a processor, and a computer program stored in the memory, the processor executing the computer program to implement the steps of any of the methods described in the first aspect.

[0015] Fourthly, a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps of any of the methods described in the first aspect.

[0016] Fifthly, a computer program product includes a computer program that, when executed by a processor, implements the steps of any of the methods described in the first aspect.

[0017] According to the intermodulation interference processing method, apparatus, device, storage medium and program product of the present application embodiments, the target cell affected by PIM interference is accurately identified based on the positive correlation between the number of characteristic disturbed physical resource blocks and downlink traffic volume, and the uplink and downlink resource scheduling strategy of the disturbed target cell is determined, thereby improving the processing efficiency of intermodulation interference. Attached Figure Description

[0018] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 This is a flowchart of a method for processing intermodulation interference provided in an embodiment of this application.

[0020] Figure 2 This is a spectral distribution characteristic diagram of an intermodulation interference processing method provided in an embodiment of this application.

[0021] Figure 3 This is a flowchart illustrating the determination of a target cell in a method for handling intermodulation interference provided in an embodiment of this application.

[0022] Figure 4 This is a flowchart illustrating the determination of the number of disturbed physical resource blocks in an intermodulation interference processing method provided in this application embodiment.

[0023] Figure 5 This is a flowchart illustrating the process of determining uplink PIM interference in a method for handling intermodulation interference provided in this application embodiment.

[0024] Figure 6 This is a flowchart illustrating the determination of uplink and downlink resource scheduling strategies in a method for handling intermodulation interference provided in an embodiment of this application.

[0025] Figure 7 This is a block diagram of an intermodulation interference processing device provided in an embodiment of this application.

[0026] Figure 8 This is a schematic diagram of a computer program product provided in an embodiment of this application.

[0027] Figure 9 This is a hardware block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application more apparent, exemplary embodiments according to this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0029] In one specific embodiment, see Figure 1 A method for handling intermodulation interference includes: S101, determine the number of disturbed physical resource blocks in the target cell and the corresponding downlink traffic volume, wherein the number of disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than the first preset interference threshold, and the uplink noise floor value shows a continuous rising characteristic in the frequency domain.

[0030] The technical solutions provided in this application can be applied to wireless communication systems in Frequency Division Duplex (FDD) mode, and are particularly suitable for intermodulation interference processing in 700MHz band cells of 5G networks. For ease of understanding, this application uses an application scenario of a 700MHz band cell as an example for illustration.

[0031] In step S101 of this embodiment, the physical resource block with disturbed features is a physical resource block (PRB) that meets the preset screening conditions. Regarding the preset screening conditions, the uplink noise floor value is greater than a first preset interference threshold. The first preset interference threshold serves as a threshold to initially screen out PRBs that are significantly affected by interference. The first preset interference threshold is set as needed, for example, -105dBm. Regarding the preset screening conditions, the uplink noise floor value exhibits a continuous upward trend in the frequency domain. This is based on the generation mechanism of passive intermodulation. The continuous upward trend means that the physical resource block is continuously numbered in the frequency domain, and its uplink noise floor value shows a trend of increasing with the increase of the frequency domain number. This upward trend can be sloping or step-like. Using this feature to screen for disturbed physical resource blocks can effectively eliminate other types of interference and pinpoint the frequency band suspected of PIM interference.

[0032] In step S101 of this application embodiment, the corresponding downlink traffic volume refers to data that is synchronized with the number of physical resource blocks with the feature disturbance in the time dimension. For example, if the uplink noise floor data is collected during the period of 10:00-11:00, then the downlink traffic volume data of the same period of 10:00-11:00 is obtained.

[0033] In the above steps, the preset screening criteria may further include: the physical resource block is located within the maximum uplink interference range. For example, the maximum uplink interference range is determined based on the landing point of the third-order intermodulation component generated by the downlink channel carrier frequency within the uplink frequency range. This can narrow the detection range, excluding frequency bands that are physically unlikely to generate PIM interference, thereby further improving the detection accuracy.

[0034] The relevant principles are explained below: Taking a 700MHz band cell in a 5G network as an example, according to the PIM interference principle, the carriers in the 700MHz downlink channel frequency domain (758MHz~798MHz) are allocated at maximum capacity: f1=758MHz, f2=798MHz. The third-order PIM intermodulation components are calculated, where the low-side component 2f1–f2=718MHz and the high-side component 2f2–f1=838MHz.

[0035] It can be seen that the third-order intermodulation components 2f1–f2 fall within the uplink channel frequency domain (703MHz~743MHz), and the starting frequency of this intermodulation product in the uplink channel is 718MHz, resulting in a maximum uplink interference range of 25MHz (718MHz~743MHz), while the uninterrupted bandwidth of the uplink channel in the 703MHz~718MHz range is only 15MHz.

[0036] If the downlink channel scheduling range is narrowed to 771MHz~798MHz to avoid interference, the calculated third-order intermodulation components 2f1–f2 fall within 744MHz, no longer falling within the uplink channel range, thus ensuring the uplink channel remains unaffected. However, this results in an unschedulable range of approximately 12MHz in the downlink channel, leading to a significant waste of resources. Furthermore, the uplink interference is directly related to the downlink channel scheduling range: the higher the downlink traffic volume and the wider the downlink scheduling bandwidth, the more severe the uplink interference. Therefore, PIM interference exhibits significant time-varying characteristics, varying with downlink traffic volume and scheduling conditions.

[0037] See Figure 2 , Figure 2 This is a spectral distribution characteristic diagram of a 700MHz cell subjected to PIM intermodulation interference. The horizontal axis represents the frequency domain PRB, and the vertical axis represents the uplink noise floor. As can be seen from the diagram, the frequency domain exhibits a continuous rise characteristic, which can be specifically manifested as a ramp-like rise or a step-like rise.

[0038] According to the protocol, the subcarrier spacing of a 700MHz cell is 15kHz, and one PRB contains 12 subcarriers. Therefore, the PRB bandwidth of a 700MHz cell is 180kHz. Based on the uplink channel interference range, the starting PRB for the maximum uplink interference range is PRB83. When the cell bandwidth is configured to 30MHz, the maximum uplink channel interference range is PRB83~PRB159; when the cell bandwidth is configured to 40MHz, the uplink channel interference range is PRB83~PRB215.

[0039] S102, based on the positive correlation between the number of disturbed physical resource blocks and downlink traffic, it is determined that the target cell is subject to uplink PIM interference.

[0040] Based on the positive correlation between the number of disturbed physical resource blocks and downlink traffic volume, it is determined that the target cell is subject to uplink PIM interference. In practice, it can be determined whether there is a positive correlation between the number of disturbed physical resource blocks and downlink traffic volume. If a positive correlation exists, it is determined that the target cell is subject to uplink PIM interference.

[0041] The determination logic in this application embodiment is designed to address the time-varying characteristics of the number of disturbed physical resource blocks (PROMs) as a function of traffic volume. These characteristics include a correlation between uplink interference and downlink channel scheduling range; the greater the downlink traffic volume in a cell, the larger the downlink scheduling range, and the more severe the uplink interference. This application embodiment performs correlation analysis between the number of disturbed PROMs in a cell and downlink traffic volume to accurately locate the target cell affected by uplink PIM interference. In practical applications, the more hourly data samples of the target cell's interference obtained, the higher the positioning accuracy will be.

[0042] S103, determine the uplink and downlink resource scheduling strategy for the target cell affected by uplink PIM interference.

[0043] After confirming that the target cell is indeed experiencing uplink PIM interference based on a positive correlation, a corresponding resource scheduling strategy configuration will be generated for that target cell. Understandably, the core objective of determining the uplink and downlink resource scheduling strategy is to avoid PIM interference. Specifically, this aims to eliminate or reduce the impact of intermodulation products on the uplink signal at the physical level by strategically allocating resources, such as restricting the use of interfering frequency bands, so that the cell's uplink reception avoids the strong interference bands, while adjusting downlink transmission to cut off the interference source.

[0044] The intermodulation interference processing method provided in this application embodiment can accurately identify the target cell affected by uplink PIM interference based on the positive correlation between the number of characteristic disturbed physical resource blocks and downlink traffic volume, and determine the uplink and downlink resource scheduling strategy for the target cell, thereby improving the processing efficiency of intermodulation interference.

[0045] In one implementation, see Figure 3 Before determining the number of disturbed physical resource blocks characteristic of the target cell, the method further includes: S301, obtain the daily average uplink interference of the cell.

[0046] In this step, hourly performance data can be obtained, and the daily average uplink interference can be determined based on the performance data.

[0047] For example, hourly performance data is obtained, including cell interference data, which can be cell interference data for various time periods throughout the day. Performance data may include cell identification code (CGI / nCGI), start time, operating frequency band, channel number of the center carrier frequency, system bandwidth, average uplink interference level of PRB0, average uplink interference level of PRB1, ..., average uplink interference level of PRB159, average uplink PRB utilization, and average downlink PRB utilization.

[0048] Since the obtained uplink noise floor value is usually presented in the form of a level value, in order to ensure the accuracy of the calculation, the level value in dBm can be converted into a power value in mW; secondly, the arithmetic mean of the power values ​​is calculated; finally, the arithmetic mean of the power values ​​is converted back into a level value, and the result is the average uplink interference of the cell for that hour.

[0049] The calculation formula is as follows:

[0050] in, This represents the average uplink interference of the target cell at the hourly granularity, in dBm. N represents the number of PRBs in the target cell. A 700MHz cell with a 30M bandwidth has 160 PRBs, and a 40M bandwidth has 216 PRBs. This represents the uplink noise floor value corresponding to the i-th PRB, in dBm.

[0051] Determine the average interference value of the target cell during busy hours, i.e., the average interference value of the target cell from 8:00 to 22:00, as the daily average noise floor value of the target cell. It can be calculated using the following formula:

[0052] in, This represents the average noise floor value of the target cell under disturbance. This represents the average uplink interference of the target cell at the hourly granularity.

[0053] S302, Identify the cells whose average uplink interference is greater than the second preset interference threshold as target cells.

[0054] Cells with an average uplink interference value greater than a second preset interference threshold are designated as target cells. This ensures that all target cells are affected by the interference, eliminating the need for further calculations for unaffected cells, thus reducing computational load and the probability of misjudging target cells as being affected by uplink PIM interference.

[0055] The second preset interference threshold can be set according to requirements. The second preset interference threshold can be the same as or different from the first preset interference threshold. For example, the second preset interference threshold is set to -105dBm, which is the daily average uplink interference value of the cell. If the value is greater than -105dBm, the cell can be determined to be under interference, and that cell can be used as the target cell.

[0056] In one implementation, see Figure 4 Determine the number of physical resource blocks whose characteristics are disturbed, including: S401, obtain the first physical resource block of the target cell and the corresponding uplink noise floor value.

[0057] In this step, the first physical resource block and its corresponding uplink noise floor value of the target cell are obtained. The term "first" in the first physical resource block is not specifically defined; it is merely used to distinguish it from the physical resource blocks described later. For example, for a cell with a bandwidth of 30MHz, the uplink noise floor values ​​from PRB0 to PRB159 can be obtained, and for a cell with a bandwidth of 40MHz, the uplink noise floor values ​​from PRB0 to PRB215 can be obtained.

[0058] In a specific example, the Physical Resource Block (PRB) of the target cell can be obtained. i and the corresponding uplink noise floor value P i PRB i P represents the i-th physical resource block. i This represents the uplink noise floor value corresponding to the i-th physical resource block.

[0059] S402, determine from the first physical resource block a second physical resource block that is located within the maximum uplink disturbance range and has an uplink noise floor value greater than the first preset interference threshold.

[0060] In this step, PRBs within the maximum uplink disturbance range and with uplink noise floor values ​​greater than the first preset interference threshold are selected from the first physical resource blocks and used as the second physical resource blocks.

[0061] In one example, the Physical Resource Block (PRB) can be determined. i Whether it is within the maximum uplink interference range of PRB83~PRB159, and whether the uplink noise floor value exceeds the first preset interference threshold, that is... and Based on the judgment results, the second physical resource block is determined.

[0062] S403, determine a third physical resource block from the second physical resource block whose number is consecutive and whose quantity meets the preset consecutive quantity threshold.

[0063] In this step, a second physical resource block (PRB) with consecutive numbers and a consecutive quantity exceeding a preset consecutive quantity threshold can be selected as the third physical resource block. The preset consecutive quantity threshold can be set according to requirements, for example, it can be set to 3. For instance, if three or more PRBs are consecutive in the frequency domain, such as PRB100, PRB101, and PRB102, then their numbers are consecutive and their quantity meets the preset consecutive quantity threshold. Therefore, PRB100, PRB101, and PRB102 are the third physical resource blocks with consecutive numbers and a quantity meeting the preset consecutive quantity threshold.

[0064] In a specific example, from the second physical resource blocks, the second physical resource blocks with consecutive numbers and a quantity that meets a preset consecutive quantity threshold are selected as the third physical resource blocks.

[0065] S404, from the third physical resource block, determine the fourth physical resource block whose uplink noise floor value shows an increasing characteristic as the frequency domain number increases.

[0066] In this step, the third physical resource block from which the uplink noise floor value increases with the frequency domain number is determined as the fourth physical resource block.

[0067] In one example, the filtered disturbed physical resource blocks (PRBs) are determined. i Corresponding noise floor value P i Does the value increase as the number i increases, i.e., does it satisfy the condition i? n >i n-1 And P n >P n-1 At this point, the frequency domain shows a continuous, sloping rise. The disturbed PRB is recorded as PRB. i '. Selected Disturbed Physical Resource Blocks (PRBs) i It is the third physical resource block, PRB. i 'It is the fourth physical resource block.'

[0068] S405, determine the number of physical resource blocks whose characteristics are disturbed based on the number of fourth physical resource blocks.

[0069] In this step, the number of fourth physical resource blocks is calculated, which is the number of physical resource blocks with the feature being disturbed.

[0070] In one example, PRB is calculated. i The quantity of 'in PRB' i The number of ' is used as a feature to indicate the number of disturbed physical resource blocks.

[0071] In one implementation, see Figure 5 The target cell was determined to be subject to uplink PIM interference, including: S501, based on the number of characteristic disturbed physical resource blocks of the target cell in multiple statistical periods and the corresponding downlink traffic volume, calculate the correlation coefficient between the two and determine the confidence interval.

[0072] In this embodiment, the statistical period is set according to requirements, for example, one hour. The correlation coefficient between the number of disturbed physical resource blocks and the corresponding downlink traffic volume in multiple one-hour periods can be calculated, and a confidence interval can be determined. Here, the two factors are the number of disturbed physical resource blocks and the corresponding downlink traffic volume. Multiple statistical periods can be statistical periods within a certain time range, such as multiple statistical periods within a day.

[0073] In this embodiment of the application, data such as downlink PRB utilization rate can be used as downlink traffic volume.

[0074] In one example, n hourly data points are obtained, and the PRB of each hourly data point is sequentially processed. i 'Quantity N' j The correlation coefficient between intermodulation interference and downlink traffic volume is calculated by substituting the rounded-downlink PRB utilization rate into the correlation coefficient formula. The correlation coefficient formula is shown below:

[0075] in, Representing variables The correlation coefficient between the variable Y and the variable α is set at a confidence level of 95% and α = 0.05. This indicates the number of disturbed physical resource blocks within multiple statistical periods. Y represents the downlink traffic volume over multiple statistical periods. In this example, the downlink traffic volume is the downlink PRB utilization rate. Representing variables Covariance with variable Y; Represents the mathematical expectation operation; This represents the mean; It represents the standard deviation.

[0076] Standard error for:

[0077] in, Represents the correlation coefficient; This indicates the number of time points in the hour.

[0078] The confidence interval is:

[0079] in, Represents the correlation coefficient; Indicates the significance level; Indicates a confidence level (1) The critical value obtained from the standard normal distribution under α).

[0080] Indicates the standard error.

[0081] S502, if the confidence interval meets the preset value conditions, then it is determined that the target cell is subject to uplink PIM interference. The preset value conditions include that the lower bound of the confidence interval is positive.

[0082] In this embodiment of the application, if the confidence interval meets the preset numerical conditions, it can be determined that there is a positive correlation between the number of disturbed physical resource blocks and the downlink traffic volume. The preset numerical conditions include a positive lower bound for the confidence interval. In practical applications, the preset numerical conditions may also include an upper bound for the confidence interval being less than 1. That is, the preset numerical conditions can be set so that both the upper and lower bounds of the confidence interval are positive and less than 1.

[0083] In one example, the correlation coefficient between intermodulation interference and downlink traffic volume is obtained. The confidence interval for the correlation coefficient is determined if both the upper and lower bounds are positive and less than 1, indicating the PRB of the target cell. i 'Quantity N' j If the change is positively correlated with the downlink PRB utilization rate, it can be determined that the target cell is affected by uplink PIM intermodulation interference.

[0084] In one implementation, see Figure 6 Determine the uplink and downlink resource scheduling strategies for target cells affected by uplink PIM interference, including: S601, determine the schedulable frequency range of the uplink channel, wherein the frequency corresponding to the physical resource block with the smallest frequency domain number in the characteristic disturbed physical resource block is taken as the highest frequency of the schedulable frequency range of the uplink channel.

[0085] S602, based on the schedulable frequency range of the uplink channel, determines the frequency domain allocation position of the physical random access channel.

[0086] For the uplink channel, since the disturbed interval is in the high-frequency range of the uplink channel, the uplink channel of the target cell is preferentially scheduled with low frequencies. When the cell is affected by PIM intermodulation interference, the higher the downlink PRB utilization, the larger the uplink disturbed interval and the smaller the maximum scheduling range. According to the principle of prioritizing the scheduling of low-frequency components in the uplink channel, the frequency F corresponding to the PRB sequence number i with the smallest PRBi' in the hourly data is taken as the highest frequency of the maximum schedulable range of the uplink channel. At this time, the maximum priority scheduling range of the uplink is 703~F. Based on this, the NR-ARFCN, i.e., the absolute frequency point number, can be calculated. The frequency position corresponding to the absolute frequency point number is kept unchanged as the allocation position for PRACH random access, and uplink resources are reasonably scheduled.

[0087] S603, based on the schedulable frequency range of the uplink channel, determines the schedulable frequency range of the downlink channel.

[0088] S604, based on the mapping relationship between the downlink synchronization signal block and the transmission timing of the physical random access channel, within the schedulable frequency range of the downlink channel, the frequency position of the synchronization signal block corresponding to the frequency domain allocation position of the physical random access channel is determined as the configuration position of the synchronization signal block.

[0089] For the downlink channel, since the frequencies generating intermodulation components are in the low-frequency range of the downlink channel, high-frequency frequencies are prioritized for scheduling the downlink channel of the target cell. Based on the maximum scheduling range of the uplink channel (703MHz~F), and according to the intermodulation interference principle and the principle of prioritizing high-frequency scheduling, the schedulable range of the downlink channel is (F / 2+496MHz~798MHz). Combining the mapping relationship between the downlink channel synchronization signal block (SSB) and the uplink channel physical random access channel (PRACH occasion) as specified in the protocol, the frequency position of the corresponding SSB preamble within the schedulable range of the downlink channel (F / 2+496MHz~798MHz) is kept unchanged as the allocation position for the SSB beam start, allowing for reasonable scheduling of downlink resources. The principle is as follows: In 5G systems, beamforming technology is introduced, and network equipment is configured with a mapping relationship between the downlink channel synchronization signal block (SSB) and the uplink physical random access channel (PRACH occasion). Based on this mapping relationship, the preamble correspondence of the SSB beam resources in the downlink channel can be determined according to the configuration position of the PRACH in the uplink channel.

[0090] In this embodiment, when uplink PIM interference exists in the target cell, the schedulable resources of the uplink channel are reduced due to interference interval compression, thus affecting the uplink and downlink resource scheduling of the cell. Based on the correlation analysis results of PIM intermodulation interference and traffic volume, and combined with the mapping relationship between SSB and PRACH occasion specified in the protocol, uplink and downlink channel resources can be rationally scheduled, thereby optimizing the uplink and downlink resource scheduling of the target cell. Through the above-mentioned joint uplink and downlink resource scheduling strategy, PIM interference avoidance and rational allocation of uplink and downlink resources in the target cell can be achieved while ensuring the configuration relationship between PRACH and synchronization signal block SSB.

[0091] In one implementation, the uplink and downlink resource scheduling strategy generates an execution script and issues a network management command to automatically modify the cell configuration parameters. Specifically, a time period with low traffic volume in the target cell can be selected to issue a network management command to automatically modify the cell configuration parameters. The joint uplink and downlink resource scheduling strategy configures the PRACH and SSB beams in fixed positions, achieving reasonable allocation of uplink and downlink resources and achieving the goal of avoiding uplink PIM intermodulation interference in the disturbed cell.

[0092] The technical solution of this application embodiment realizes the correlation analysis between PIM interference and traffic volume, accurately locates PIM-affected cells in the target cell, formulates a joint uplink and downlink resource scheduling strategy for the target cell based on the correlation analysis results, generates an execution script and issues network management commands to automatically modify cell configuration parameters. While achieving uplink PIM intermodulation interference avoidance in 700MHz cells, it effectively ensures maximum utilization of uplink and downlink channel resources in the affected cells, improves user experience, and promotes traffic growth.

[0093] The technical solution of this application embodiment realizes the correlation analysis between PIM interference and traffic volume. Addressing the time-varying characteristics of PIM interference with traffic volume and scheduling, it introduces hourly performance data analysis to calculate the number of consecutive PRBs (Persistent Backplane Blocks) with increased uplink noise floor value in the affected cell within the maximum interference interval. The correlation analysis between the number of affected PRBs and downlink PRB utilization in the selected hourly data shows that if the number of PRBs and downlink PRB utilization are positively correlated, the affected cell is affected by PIM intermodulation interference, thus accurately locating the PIM-affected cell.

[0094] The technical solution of this application embodiment, based on the correlation analysis between PIM interference and traffic volume, and combined with the mapping relationship between downlink channel synchronization signal block (SSB) and uplink channel PRACH occasion, formulates a joint scheduling strategy for uplink and downlink resources. Uplink channels are prioritized for scheduling from low frequencies, while downlink channels are prioritized for scheduling from high frequencies, and the PRACH and SSB beams are configured in fixed positions. This effectively ensures maximum utilization of uplink and downlink channel resources in the affected cell, improves user experience, and promotes traffic growth.

[0095] See Figure 7 An exemplary embodiment of this application also provides an intermodulation interference processing apparatus, comprising: The first determining module 701 is used to determine the number of characteristic disturbed physical resource blocks of the target cell and the corresponding downlink traffic volume. The number of characteristic disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than the first preset interference threshold, and the uplink noise floor value shows a continuous rising feature in the frequency domain. The second determination module 702 determines that the target cell is subject to uplink PIM interference based on the positive correlation between the number of disturbed physical resource blocks and downlink traffic volume. The third determination module 703 determines the uplink and downlink resource scheduling strategy for the target cell affected by uplink PIM interference.

[0096] In one embodiment, the apparatus further includes a fourth determining module for determining the number of characteristic disturbed physical resource blocks of the target cell before: Obtain the daily average uplink interference for the cell; Cells with an average uplink interference value greater than a second preset interference threshold are identified as target cells.

[0097] In one embodiment, the preset filtering conditions further include: The physical resource block is located within the maximum uplink disturbance range.

[0098] In one embodiment, the maximum uplink disturbance interval is determined based on the landing point of the third-order intermodulation component generated by the downlink channel carrier frequency within the uplink frequency range.

[0099] In one embodiment, the first determining module 701, when determining the number of disturbed physical resource blocks, is specifically used for: Obtain the first physical resource block of the target cell and its corresponding uplink noise floor value; From the first physical resource block, determine the second physical resource block that is located within the maximum uplink disturbance range and has an uplink noise floor value greater than the first preset interference threshold. From the second physical resource block, determine the third physical resource block whose number is consecutive and whose quantity meets the preset consecutive quantity threshold; From the third physical resource block, identify the fourth physical resource block whose uplink noise floor value increases with the frequency domain number. The number of physical resource blocks whose characteristics are disturbed is determined based on the number of fourth physical resource blocks.

[0100] In one embodiment, the number of disturbed physical resource blocks and the downlink traffic volume are determined based on data with an hourly time granularity.

[0101] In one embodiment, the second determining module 702 is used to determine when the target cell is subjected to uplink PIM interference, specifically for: Based on the number of disturbed physical resource blocks and the corresponding downlink traffic volume of the target cell in multiple statistical periods, the correlation coefficient between the two is calculated and the confidence interval is determined. If the confidence interval meets the preset numerical conditions, it is determined that the target cell is subject to uplink PIM interference. The preset numerical conditions include that the lower bound of the confidence interval is positive.

[0102] In one embodiment, the third determining module 703, when determining the uplink and downlink resource scheduling strategy of the target cell affected by uplink PIM interference, is specifically used for: The schedulable frequency range of the uplink channel is determined, wherein the frequency corresponding to the physical resource block with the smallest frequency domain number in the characteristic disturbed physical resource block is taken as the highest frequency of the schedulable frequency range of the uplink channel. Based on the schedulable frequency range of the uplink channel, determine the frequency domain allocation location of the physical random access channel; Based on the schedulable frequency range of the uplink channel, determine the schedulable frequency range of the downlink channel; Based on the mapping relationship between the downlink synchronization signal block and the transmission timing of the physical random access channel, within the schedulable frequency range of the downlink channel, the frequency position of the synchronization signal block corresponding to the frequency domain allocation position of the physical random access channel is determined as the configuration position of the synchronization signal block.

[0103] An exemplary embodiment of this application also provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor. The memory stores a computer program executable by the at least one processor, which, when executed by the at least one processor, causes the electronic device to perform a method according to an embodiment of this application.

[0104] Exemplary embodiments of this application also provide a non-transitory computer-readable storage medium storing a computer program, wherein the computer program, when executed by a computer's processor, is used to cause the computer to perform a method according to an embodiment of this application.

[0105] refer to Figure 8 An exemplary embodiment of this application also provides a computer program product 800, including a computer program 801, wherein the computer program, when executed by a computer's processor, is used to cause the computer to perform a method according to an embodiment of this application.

[0106] refer to Figure 9 The present invention describes a structural block diagram of an electronic device 900 that can serve as a server or client of this application, which is an example of a hardware device that can be applied to various aspects of this application. The electronic device is intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the application described and / or claimed herein.

[0107] Electronic device 900 includes a computing unit 901, which can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) 902 or a computer program loaded into random access memory (RAM) 903 from storage unit 908. The RAM 903 may also store various programs and data required for device operation. The computing unit 901, ROM 902, and RAM 903 are interconnected via bus 904. An input / output (I / O) interface 905 is also connected to bus 904.

[0108] Multiple components in electronic device 900 are connected to I / O interface 905, including: input unit 906, output unit 907, storage unit 908, and communication unit 909. Input unit 906 can be any type of device capable of inputting information to electronic device 900. Input unit 906 can receive input digital or character information and generate key signal inputs related to user settings and / or function control of electronic device. Output unit 907 can be any type of device capable of presenting information and may include, but is not limited to, a display, speaker, video / audio output terminal, vibrator, and / or printer. Storage unit 908 may include, but is not limited to, disk and optical disk. Communication unit 909 allows electronic device 900 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication transceivers and / or chipsets, such as Bluetooth™ devices, WiFi devices, WiMax devices, cellular communication devices, and / or the like.

[0109] The computing unit 901 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 901 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 901 performs the various methods and processes described above. For example, in some embodiments, the methods of the embodiments of this application can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as storage unit 908. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 900 via ROM 902 and / or communication unit 909. In some embodiments, the computing unit 901 can be configured to perform the methods of the embodiments of this application by any other suitable means (e.g., by means of firmware).

[0110] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for processing intermodulation interference, characterized in that, include: The number of disturbed physical resource blocks and the corresponding downlink traffic volume of the target cell are determined. The number of disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than a first preset interference threshold, and that the uplink noise floor value shows a continuous rising feature in the frequency domain. Based on the positive correlation between the number of disturbed physical resource blocks and the downlink traffic volume, it is determined that the target cell is subject to uplink PIM interference. Determine the uplink and downlink resource scheduling strategy for the target cell that is affected by uplink PIM interference.

2. The method according to claim 1, characterized in that, Before determining the number of disturbed physical resource blocks in the target cell, the method further includes: Obtain the daily average uplink interference for the cell; The cell whose average uplink interference is greater than a second preset interference threshold is identified as the target cell.

3. The method according to claim 1, characterized in that, The preset filtering conditions also include: The physical resource block is located within the maximum uplink disturbance range.

4. The method according to claim 3, characterized in that, The maximum uplink disturbance range is determined based on the landing point of the third-order intermodulation component generated by the downlink channel carrier frequency within the uplink frequency range.

5. The method according to any one of claims 1 to 4, characterized in that, Determining the number of the disturbed physical resource blocks includes: Obtain the first physical resource block and the corresponding uplink noise floor value of the target cell; From the first physical resource block, determine the second physical resource block that is located within the maximum uplink disturbance range and has an uplink noise floor value greater than the first preset interference threshold. From the second physical resource block, determine a third physical resource block whose number is consecutive and whose quantity meets a preset consecutive quantity threshold; From the third physical resource block, a fourth physical resource block is determined whose uplink noise floor value increases with the increase of the frequency domain number; The number of disturbed physical resource blocks is determined based on the number of the fourth physical resource blocks.

6. The method according to claim 1, characterized in that, The number of disturbed physical resource blocks and downlink traffic volume are determined based on data with an hourly time granularity.

7. The method according to claim 1, characterized in that, The determination that the target cell is subject to uplink PIM interference includes: Based on the number of disturbed physical resource blocks and the corresponding downlink traffic volume of the target cell in multiple statistical periods, the correlation coefficient between the two is calculated and the confidence interval is determined. If the confidence interval meets the preset numerical conditions, it is determined that the target cell is subject to uplink PIM interference. The preset numerical conditions include a positive lower bound for the confidence interval.

8. The method according to claim 1, characterized in that, Determining the uplink and downlink resource scheduling strategy for the target cell affected by uplink PIM interference includes: The schedulable frequency range of the uplink channel is determined, wherein the frequency corresponding to the physical resource block with the smallest frequency domain number among the characteristic disturbed physical resource blocks is taken as the highest frequency of the schedulable frequency range of the uplink channel. Based on the schedulable frequency range of the uplink channel, the frequency domain allocation position of the physical random access channel is determined; Based on the schedulable frequency range of the uplink channel, the schedulable frequency range of the downlink channel is determined. Based on the mapping relationship between the downlink synchronization signal block and the transmission timing of the physical random access channel, within the schedulable frequency range of the downlink channel, the frequency position of the synchronization signal block corresponding to the frequency domain allocation position of the physical random access channel is determined as the configuration position of the synchronization signal block.

9. A device for processing intermodulation interference, characterized in that, include: The first determining module is used to determine the number of characteristic disturbed physical resource blocks of the target cell and the corresponding downlink traffic volume. The number of characteristic disturbed physical resource blocks is the number of physical resource blocks that meet the preset screening conditions. The preset screening conditions include that the uplink noise floor value of the physical resource block is greater than the first preset interference threshold, and the uplink noise floor value shows a continuous rising feature in the frequency domain. The second determining module determines that the target cell is subject to uplink PIM interference based on the positive correlation between the number of disturbed physical resource blocks and the downlink traffic volume. The third determining module determines the uplink and downlink resource scheduling strategy for the target cell affected by uplink PIM interference.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 8.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 8.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 8.

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