Aggregation level determination method and device, electronic equipment and nonvolatile storage medium

Abstract

The invention discloses an aggregation level determination method and device, electronic equipment and a nonvolatile storage medium. The method comprises the following steps: acquiring channel quality indication information reported by a terminal in a first period; according to the channel quality indication information, an initial value of an aggregation level is determined, and the aggregation level is used for indicating the number of control channel elements occupied by a physical downlink control channel; and adjusting the initial value of the aggregation level according to a resource occupation parameter and / or an uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain a final value of the aggregation level. According to the method and the device, the technical problems that aggregation level adjustment is too frequent and huge overhead is brought to terminal demodulation due to the fact that aggregation level adjustment is carried out only according to reported channel quality indication information in related technologies and the channel state is rapidly changed due to relatively rapid relative movement between a satellite network and a terminal in a non-ground network scene are solved.

Description

Technical Field

[0001] The present application relates to the field of satellite communication technology, and in particular to a method, device, electronic device and non-volatile storage medium for determining an aggregation level. Background Art

[0002] The 3GPP (Third Generation Partnership Project) standard stipulates that a PDCCH (Physical Downlink Control Channel) can be transmitted on n consecutive CCEs (Control Channel Elements). The aggregation level indicates the number of CCEs occupied by a PDCCH. That is, the CCE aggregation level available for a PDCCH indicates the occupied control resources.

[0003] In related technologies, CCE adaptation only adjusts the aggregation level based on reported channel quality indication information. However, in NTN (Non-Terrestrial Networks) scenarios, the relative movement between the UE and the network is faster, which causes channel conditions to change more drastically and aggregation level adjustments to be more frequent, resulting in fluctuations in the aggregation level, which is not conducive to PDCCH channel demodulation and subsequent adjustments.

[0004] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0005] The embodiments of the present application provide a method, apparatus, electronic device, and non-volatile storage medium for determining an aggregation level, to at least address the technical problem that, since related technologies adjust the aggregation level only based on reported channel quality indication information, the rapid relative motion between the satellite network and the terminal in non-terrestrial network scenarios can cause the channel state to change rapidly, resulting in excessively frequent adjustments to the aggregation level and incurring huge overhead for terminal demodulation.

[0006] According to one aspect of an embodiment of the present application, a method for determining an aggregation level is provided, including: obtaining channel quality indication information reported by a terminal in a first period; determining an initial value of the aggregation level based on the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; adjusting the initial value of the aggregation level based on a resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain a final value of the aggregation level, wherein the second period is a scheduling period that is adjacent to the first period and is located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel elements, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0007] Optionally, the resource occupancy parameters include: the occupancy rate of the control channel element; the method includes: obtaining the occupancy rate of the control channel element corresponding to each time slot in the second period, wherein the occupancy rate is the ratio of the number of resources of the control channel element occupied by the physical downlink control channel to the total number of resources of the control channel element; determining the resource restriction state of the physical downlink control channel in the second period based on the occupancy rate corresponding to the time slot; determining the network environment state corresponding to the first period based on the channel quality indication information reported by the terminal in the first period; adjusting the initial value of the aggregation level based on the resource restriction state and the network environment state.

[0008] Optionally, determining the resource-restricted state of the physical downlink control channel within the second period based on the occupancy corresponding to the time slot includes: judging whether the occupancy corresponding to each time slot within the second period is greater than a preset occupancy threshold value; when the occupancy is greater than the first preset occupancy threshold value, adding one to the first number; when the occupancy is less than the second preset occupancy threshold value, adding one to the second number, wherein the first number and the second number are used to characterize the resource-restricted state, the first number is used to characterize the number of time slots in which resources are restricted within the second period, and the second number is used to characterize the number of time slots in which resources are not restricted within the second period, the initial values of the first number and the second number are both zero, and the first preset occupancy threshold value is greater than the second preset occupancy threshold value.

[0009] Optionally, the network environment status includes: a good point environment, a midpoint environment, and a poor point environment, wherein the network quality of the good point environment is higher than that of the midpoint environment, and the network quality of the midpoint environment is higher than that of the poor environment; adjusting the initial value of the aggregation level according to the resource-constrained status and the network environment status includes: when the first number is greater than the limited number threshold and the network environment status is a good point environment, adjusting the initial value of the aggregation level downward by one level; when the second number is greater than the unlimited number threshold and the network environment status is a poor environment, adjusting the initial value of the aggregation level upward by one level; wherein, the higher the aggregation level, the more resources of the control channel elements occupied by the physical downlink control channel, and the better the demodulation performance of the physical downlink control channel.

[0010] Optionally, the uplink and downlink service feedback parameters include at least one of the following: a feedback status of downlink control information corresponding to the uplink service, and a feedback status of downlink control information corresponding to the downlink service; the method includes: converting the channel quality indication information into a corresponding signal-to-noise ratio value to obtain a first signal-to-noise ratio, wherein the first signal-to-noise ratio corresponds to an initial value of the aggregation level; correcting the first signal-to-noise ratio according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain a second signal-to-noise ratio; and determining a final value of the aggregation level according to the second signal-to-noise ratio.

[0011] Optionally, the modifying the first signal-to-noise ratio according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain the second signal-to-noise ratio includes: performing activation detection on the physical uplink shared channel corresponding to the downlink control information of the uplink service in a case where the uplink service and the downlink service exist in the second period; and if the activation detection of the physical uplink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step size level, wherein the activation detection is used to determine whether the terminal has successfully received the downlink control information. If the activation detection is successful, the feedback status of the downlink control information is set to the terminal. The terminal successfully receives the downlink control information; if the activation detection of the physical uplink shared channel fails, performing activation detection on the physical downlink shared channel corresponding to the downlink control information of the downlink service; if the activation detection of the physical downlink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step levels; and if the activation detection of the physical downlink shared channel fails, decreasing the third signal-to-noise ratio by a target number of preset step levels, where the target number is determined based on the amount of feedback information returned by the terminal for the downlink control information; and determining a second signal-to-noise ratio based on the first signal-to-noise ratio and the adjusted third signal-to-noise ratio.

[0012] Optionally, the method also includes: when only uplink traffic exists in the second period, performing activation detection on a physical uplink shared channel corresponding to the downlink control information of the uplink traffic, and when the activation detection of the physical uplink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step level; and when the activation detection of the physical uplink shared channel fails, decreasing the third signal-to-noise ratio by a preset step level; when only downlink traffic exists in the second period, performing activation detection on a physical uplink control channel corresponding to the downlink control information of the downlink traffic, and when the activation detection of the physical uplink control channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step levels; and when the activation detection of the physical uplink control channel fails, decreasing the third signal-to-noise ratio by a target number of preset step levels.

[0013] According to another aspect of an embodiment of the present application, an aggregation level determination device is also provided, including: a first acquisition module, used to obtain channel quality indication information reported by the terminal in the first period; a first determination module, used to determine the initial value of the aggregation level based on the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; an adaptive adjustment module, used to adjust the initial value of the aggregation level based on the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period, to obtain a final value of the aggregation level, wherein the second period is a scheduling period adjacent to the first period and located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0014] According to another aspect of an embodiment of the present application, an electronic device is provided, including: a memory and a processor, the processor being configured to run a program stored in the memory, wherein the aggregation level determination method is executed when the program is run.

[0015] According to another aspect of an embodiment of the present application, a non-volatile storage medium is provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the aggregation level determination method by running the computer program.

[0016] According to another aspect of the embodiments of the present application, a computer program product is provided, including a computer program, which implements the steps of the aggregation level determination method when executed by a processor.

[0017] In an embodiment of the present application, the channel quality indication information reported by the terminal in the first period is obtained; based on the channel quality indication information, an initial value of the aggregation level is determined, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; based on the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period, the initial value of the aggregation level is adjusted to obtain a final value of the aggregation level, wherein the second period is a scheduling period immediately adjacent to the first period and located before the first period, the resource occupancy parameter is used to characterize the resource occupancy state of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission, by considering the CQI (Channel Quality Index) reported by the terminal Based on the channel quality indicator (CQI) information, the CCE aggregation level is corrected according to the uplink and downlink service feedback parameters, or the CCE is adaptively adjusted according to the resource occupancy parameters, thereby fully utilizing CCE resources, simplifying CCE adaptive processing, and reducing system overhead. This further solves the technical problem that in non-terrestrial network scenarios, the rapid relative motion between the satellite network and the terminal causes the channel state to change rapidly, resulting in excessively frequent aggregation level adjustments and huge overhead for terminal demodulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a hardware structure block diagram of a computer terminal (or electronic device) for implementing a method for determining an aggregation level according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a method flow for determining an aggregation level provided in an embodiment of the present application;

[0021] Figure 3 2 is a schematic diagram of a method flow for adjusting the aggregation level based on the number of PDCCH resource restrictions provided in an embodiment of the present application;

[0022] Figure 4 1 is a schematic diagram of a method flow for performing SINR adaptation based on uplink and downlink DCI according to an embodiment of the present application;

[0023] Figure 5 It is a structural diagram of an aggregation level determination device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The 3GPP standard stipulates that a PDCCH can be transmitted on n consecutive CCEs. The aggregation level indicates the number of CCEs occupied by a PDCCH. That is, the CCE aggregation level available for a PDCCH indicates the occupied control resources. The higher the CCE aggregation level of a PDCCH, the better the PDCCH demodulation performance, but the more control resources it occupies.

[0027] In related technologies, the implementation of CCE adaptation mainly relies on comparing the CQI (downlink channel quality indicator) with the spectrum efficiency corresponding to each CCE aggregation level. If the spectrum efficiency corresponding to the current CQI is greater than the spectrum efficiency corresponding to the CCE aggregation level, the aggregation level is selected. If it is less, the comparison continues until the most appropriate aggregation level is selected.

[0028] The implementation mechanism in the related art is to estimate the quality of the downlink channel based on the CQI reported by the terminal, that is, it is necessary to compare it with the spectrum efficiency corresponding to the CCE aggregation level to select the most appropriate aggregation level. However, because the spectrum efficiency corresponding to the CCE aggregation level is controlled according to the MCS (Modulation and Coding Scheme) level corresponding to the network setting, it is too simplified and cannot accurately reflect the threshold corresponding to the channel quality. As a result, the aggregation level selected in CCE adaptation does not match the actual channel environment, affecting the utilization of PDCCH resources.

[0029] In addition, in the implementation mechanism of the related technology, the channel quality changes greatly in the NTN scenario, and the CCE aggregation level also changes drastically, making the aggregation level adjustment too frequent, which will bring huge overhead to the terminal demodulation. Therefore, the judgment of only adjusting the aggregation level is too simplistic and cannot meet the requirement of fully utilizing PDCCH resources.

[0030] In order to solve this problem, a relevant solution is provided in the embodiment of the present application. First, the CCE aggregation level needs to be adjusted according to the currently reported channel information. Secondly, it is also necessary to consider adjusting according to the PDCCH restriction situation and the terminal PDCCH missed detection. The detailed description is as follows.

[0031] According to an embodiment of the present application, an embodiment of a method for determining an aggregation level is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0032] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Figure 1 FIG. 1 shows a hardware structure block diagram of a computer terminal (or electronic device) for implementing an aggregation level determination method. Figure 1 As shown, the computer terminal 10 (or electronic device) may include one or more (illustrated as 102a, 102b, ..., 102n in the figure) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the BUS bus), a network interface, a power supply and / or a camera. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0033] It should be noted that the one or more processors 102 and / or other data processing circuits described above may generally be referred to herein as "data processing circuitry". The data processing circuitry may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuitry may be a single independent processing module, or may be incorporated in whole or in part into any of the other components of the computer terminal 10 (or electronic device). As described in the embodiments of the present application, the data processing circuitry serves as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0034] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the aggregation level determination method in the embodiments of the present application. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby implementing the above-mentioned aggregation level determination method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories may be connected to the computer terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0035] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the communications provider of the computer terminal 10. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is configured to communicate with the Internet wirelessly.

[0036] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 10 (or electronic device).

[0037] In the above operating environment, the embodiment of the present application provides a method for determining an aggregation level. Figure 2 is a schematic diagram of a method flow for determining an aggregation level according to an embodiment of the present application, such as Figure 2 As shown, the method includes the following steps:

[0038] Step S202: Acquire channel quality indication information reported by the terminal in the first period;

[0039] Step S204: determining an initial value of an aggregation level according to the channel quality indicator information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel;

[0040] Step S206: Adjust the initial value of the aggregation level based on the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain the final value of the aggregation level, wherein the second period is a scheduling period that is adjacent to the first period and is located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0041] Through the above steps, by considering the CQI information reported by the terminal, correcting the CCE aggregation level according to the uplink and downlink service feedback parameters, or adaptively adjusting the CCE according to the resource occupancy parameters, the purpose of fully utilizing CCE resources, simplifying CCE adaptive processing, and reducing system overhead is achieved. This solves the technical problem that, since the relevant technology only adjusts the aggregation level based on the reported channel quality indication information, the rapid relative motion between the satellite network and the terminal in non-terrestrial network scenarios will cause the channel state to change rapidly, resulting in excessively frequent aggregation level adjustments and huge overhead for terminal demodulation.

[0042] The following further introduces the method for determining the aggregation level in steps S202 to S206 of the embodiment of the present application.

[0043] In an embodiment of the present application, the initial aggregation level (initial value of the aggregation level) can be determined based on the CQI information reported by the terminal, and then the aggregation level can be corrected according to the resource occupancy parameter (PDCCH CCE resource occupancy); or, based on the CQI information reported by the terminal, the aggregation level can be adaptively adjusted in combination with the uplink and downlink service feedback parameters (uplink and downlink DCI (Downlink Control Information, downlink control information) detection status).

[0044] The following describes the aggregation level adaptation methods in these two NTN scenarios.

[0045] First, an adaptive adjustment method based on limited PDCCH resources is introduced.

[0046] In this mode, the network makes corrections based on the CQI information reported by the terminal, and then performs CCE adaptation by comparing the spectral efficiency of the corrected CQI with the spectral efficiency corresponding to the CCE aggregation level. In addition, the CCE aggregation level selection can be modified based on the PDCCH resource occupancy in the previous cycle. That is, when the user is in a poor environment and the PDCCH resource utilization exceeds a certain threshold, the CCE aggregation level will be reduced. When the user is in a good environment and the PDCCH resource utilization falls below a certain threshold, the CCE aggregation level will be increased. This allows for more flexible use of CCE resources and simplifies the processing during CCE adaptation, as described below.

[0047] In some embodiments of the present application, the resource occupancy parameters include: the occupancy rate of the control channel element; the method includes the following steps: obtaining the occupancy rate of the control channel element corresponding to each time slot in the second period, wherein the occupancy rate is the ratio of the number of resources of the control channel element occupied by the physical downlink control channel to the total number of resources of the control channel element; determining the resource restriction state of the physical downlink control channel in the second period based on the occupancy rate corresponding to the time slot; determining the network environment state corresponding to the first period based on the channel quality indication information reported by the terminal in the first period; adjusting the initial value of the aggregation level based on the resource restriction state and the network environment state.

[0048] Specifically, first, the network side can correct the CQI information reported by the terminal, and then compare the spectrum efficiency of the corrected CQI with the spectrum efficiency corresponding to the CCE aggregation level to perform CCE adaptation, thereby determining the initial value of the aggregation level; then, within a CQI (K-1) reporting period (i.e., the second period), the CCE occupancy rate P (occupied CCE resources / total CCE resources) of each time slot is counted, and the resource restriction state of the physical downlink control channel within the second period is further determined based on the CCE occupancy rate P, and the network environment state within this period (K) (i.e., the first period) is determined based on the reported CQI value; finally, the initial value of the aggregation level is adjusted based on the resource restriction state and the network environment state, as shown in the specific process steps. Figure 3 As shown, the specific description is given below.

[0049] The specific steps of further determining the resource restriction state of the physical downlink control channel in the second period according to the CCE occupancy rate P are as follows.

[0050] In some embodiments of the present application, determining the resource-restricted state of the physical downlink control channel in the second period based on the occupancy corresponding to the time slot includes the following steps: judging whether the occupancy corresponding to each time slot in the second period is greater than a preset occupancy threshold value; when the occupancy is greater than the first preset occupancy threshold value, adding one to the first number; when the occupancy is less than the second preset occupancy threshold value, adding one to the second number, wherein the first number and the second number are used to characterize the resource-restricted state, the first number is used to characterize the number of time slots in which resources are restricted in the second period, and the second number is used to characterize the number of time slots in which resources are not restricted in the second period, the initial values of the first number and the second number are both zero, and the first preset occupancy threshold value is greater than the second preset occupancy threshold value.

[0051] Specifically, within a CQI (K-1) reporting cycle, the CCE occupancy P of each time slot is counted, and the time slot occupancy is compared to see whether it is greater than the maximum threshold value Pth (i.e., the first preset occupancy threshold value). If so, the restricted number N (i.e., the first number mentioned above) is increased by 1; and the time slot occupancy is compared to see whether it is less than the minimum threshold value (i.e., the second preset occupancy threshold value). If so, the unrestricted number M (i.e., the second number mentioned above) is increased by 1; otherwise, no processing is performed.

[0052] The specific steps for adjusting the initial value of the aggregation level according to the resource limitation status and the network environment status are as follows.

[0053] In some embodiments of the present application, the network environment status includes: a good point environment, a midpoint environment, and a poor point environment, wherein the network quality of the good point environment is higher than that of the midpoint environment, and the network quality of the midpoint environment is higher than that of the poor environment; adjusting the initial value of the aggregation level according to the resource-limited state and the network environment state includes the following steps: when the first number is greater than the limited number threshold value and the network environment state is a good point environment, adjusting the initial value of the aggregation level downward by one level; when the second number is greater than the unlimited number threshold value and the network environment state is a poor environment, adjusting the initial value of the aggregation level upward by one level; wherein, the higher the aggregation level, the more resources of the control channel elements occupied by the physical downlink control channel, and the better the demodulation performance of the physical downlink control channel.

[0054] Specifically, when the statistical period K (i.e., the first period) arrives, the network environment status within this period is determined based on the reported CQI value, for example, whether the network environment status of the current period is in a good or bad environment. For example, if the corrected CQI value is greater than 12, it can be considered to be in a good environment. If it is between 8 and 12, it can be considered to be a mid-point environment. If it is below 8, it can be considered to be a bad environment.

[0055] If the network environment is poor, M (the second number) is compared with the maximum threshold for unrestricted calls, Mth (the aforementioned threshold for unrestricted calls). If it is greater than this threshold, the aggregation level is raised by one level; otherwise, no adjustment is made. If the network environment is good, N (the first number) is compared with the corresponding maximum threshold for restricted calls, Nth (the aforementioned threshold for restricted calls). If it is greater than the maximum threshold, the aggregation level is lowered by one level. Finally, N and M are reset to 0, and counting of restricted calls continues for the next cycle.

[0056] It should be noted that when the CCE aggregation level is lowered to 1 (the lowest level), the CCE aggregation level is no longer adjusted, thereby achieving lower limit protection.

[0057] This dynamic adjustment strategy, based on occupancy, ensures sufficient control channel elements (CCEs) for the physical downlink control channel (PDC) when resources are limited, thus preventing demodulation failures. Furthermore, by taking into account the network environment, it can reduce CCE occupancy under favorable network conditions, freeing up resources for other services and improving overall system performance. This ensures reliable demodulation of the PDCCH in adverse environments while conserving valuable resources in favorable ones, achieving efficient resource utilization and optimizing network performance.

[0058] The following introduces an adaptive adjustment method based on CQI information and PDCCH missed detection.

[0059] In this mode, in addition to the CQI information reported by the terminal, the channel quality of the PDCCH can also be estimated based on the feedback of the uplink and downlink services, that is, the situation when the terminal misses detection needs to be taken into account. When there is uplink service or uplink and downlink service, the CCE aggregation level can be corrected based on the number of correct uplink CRC results in a cycle. When there is only downlink service, the aggregation level can be corrected based on the ratio of the number of activation detections fed back by the downlink, as follows.

[0060] In some embodiments of the present application, an uplink and downlink service feedback parameter includes at least one of the following: a feedback status of downlink control information corresponding to the uplink service, and a feedback status of downlink control information corresponding to the downlink service; and the method includes the following steps: converting channel quality indication information into a corresponding signal-to-noise ratio value to obtain a first signal-to-noise ratio, wherein the first signal-to-noise ratio corresponds to an initial value of an aggregation level; correcting the first signal-to-noise ratio according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain a second signal-to-noise ratio; and determining a final value of the aggregation level according to the second signal-to-noise ratio.

[0061] Specifically, the network side first estimates the PDCCH channel quality, that is, first considers the CQI information reported by the terminal, and then modifies the CCE aggregation level according to the uplink and downlink DCI detection situation.

[0062] Among them, the correction of the CCE aggregation level is mainly based on two aspects: one is the activation detection of the PUSCH (Physical Uplink Shared Channel) signal (i.e., the activation detection result of the DATA on the PUSCH. If the CRC (Cyclic Redundancy Check) decoding is correct, it is fixedly considered to have passed the activation detection. Otherwise, the activation detection result is used. This activation detection result is equivalent to the missed detection of the uplink DCI0); the other is based on the activation detection of the PUCCH (Physical Uplink Control Channel) signal (i.e., the activation detection result of the PUCCH HARQ-ACK. If a CRC is present, it is necessary to combine the CRC to obtain the final HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) activation detection result. This activation detection result is equivalent to the missed detection of the downlink DCI1). The details are described below.

[0063] First, according to the CQI reported by the terminal, the CQI is corrected, and then the SINR (Signal-to-Interference-plus-Noise Ratio) value is converted to obtain the first signal-to-noise ratio SINR CQI , for example, the conversion relationship can be shown in the table.

[0064]

[0065] Afterwards, the second signal-to-noise ratio (SINR) corresponding to the PDCCH can be calculated based on the uplink and downlink DCI detection conditions. cce =SINR CQI +SINR DCI , that is, the final second signal-to-noise ratio SINR cce The SINR value corresponding to the corrected CQI (SINR CQI ) and the SINR value adjusted by DCI activation detection (SINR DCI ), the DCI activation detection and signal-to-noise ratio adjustment process is as follows Figure 4As shown in the figure, K refers to the CQI cycle. In this embodiment, the CCE aggregation level in the current CQI cycle (the first intermediate period) is determined by the CCE adaptive correction result in the previous cycle (the second cycle). α is the forgetting factor. This means that when the channel environment suddenly improves, the base station will not immediately reduce the CCE allocation when allocating PDCCH resources, maintaining a buffer to prevent drastic CCE changes. The steps for adjusting the signal-to-noise ratio are as follows.

[0066] In some embodiments of the present application, the first signal-to-noise ratio is corrected according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain the second signal-to-noise ratio, including the following steps: when there is uplink service and downlink service in the second period, performing activation detection on the physical uplink shared channel corresponding to the downlink control information of the uplink service; if the activation detection of the physical uplink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step size level, wherein the activation detection is used to determine whether the terminal has successfully received the downlink control information. If the activation detection is successful, the downlink control information The feedback status is that the terminal successfully receives downlink control information; if activation detection of the physical uplink shared channel fails, activation detection is performed on the physical downlink shared channel corresponding to the downlink control information of the downlink service; if activation detection of the physical downlink shared channel is successful, the third signal-to-noise ratio corresponding to the downlink control information is increased by a target number of preset step levels; and if activation detection of the physical downlink shared channel fails, the third signal-to-noise ratio is decreased by a target number of preset step levels, where the target number is determined based on the amount of feedback information returned by the terminal for the downlink control information; and a second signal-to-noise ratio is determined based on the first signal-to-noise ratio and the adjusted third signal-to-noise ratio.

[0067] In the embodiment of the present application, for the PDCCH uplink DCI (i.e., downlink control information of the uplink service), the uplink PUSCH (Physical Uplink Shared Channel) channel is activated and detected; for the PDCCH downlink DCI, the energy activation detection is performed for the PDSCH ACK / NACK feedback channel position corresponding to each UE, and the PDCCH SINR is corrected based on the activation detection result.

[0068] Specifically, it determines whether there is currently uplink and downlink traffic. If both are present, it first determines whether the PUSCH (Physical Uplink Shared Channel) activation detection corresponding to the UE's uplink DCI is successful. If successful (Y), the step level is increased by one. If not, it is determined whether N (i.e., the target number) of downlink feedback from the UE have passed the activation detection. If so, the step level is increased by N; if not, the step level is decreased by N. Based on the adjustments in the above steps, a new aggregation level is calculated.

[0069] In some embodiments of the present application, the method further includes the following steps: when only uplink traffic exists in the second period, performing activation detection on a physical uplink shared channel corresponding to the downlink control information of the uplink traffic, and when the activation detection of the physical uplink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step level; and when the activation detection of the physical uplink shared channel fails, decreasing the third signal-to-noise ratio by a preset step level; when only downlink traffic exists in the second period, performing activation detection on a physical uplink control channel corresponding to the downlink control information of the downlink traffic, and when the activation detection of the physical uplink control channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step levels; and when the activation detection of the physical uplink control channel fails, decreasing the third signal-to-noise ratio by a target number of preset step levels.

[0070] Specifically, when only uplink traffic is being processed, for uplink scheduled DCI, if PUSCH activation detection succeeds, it is assumed that the terminal has received the PDCCH sent by the network, and the Step is adjusted upward by one (preset step size level); if activation detection fails, it is assumed that the terminal has not detected the PDCCH, and the Step is adjusted downward by one. When only downlink traffic is being processed, PUCCH activation detection is considered, and the Step is adjusted similarly.

[0071] The dynamic signal-to-noise ratio adjustment mechanism based on service feedback can reflect the success rate of the terminal receiving and sending services in real time, thereby adjusting the aggregation level in a timely manner to ensure optimal demodulation performance in various service scenarios, avoiding resource waste and demodulation failure, and enhancing the system's adaptability and robustness.

[0072] The aggregation level determination method provided in the present application can dynamically adjust the aggregation level according to the channel quality indication information reported by the terminal, the resource occupancy status of the physical downlink control channel in the previous scheduling cycle, and the uplink and downlink service feedback, effectively improving the demodulation performance of the physical downlink control channel and the resource utilization of the system, avoiding demodulation failures and resource waste caused by improper aggregation level settings, improving the stability and efficiency of network communications, and having significant benefits in improving user service quality.

[0073] According to an embodiment of the present application, an embodiment of an aggregation level determination device is also provided. Figure 5 Schematic diagram of a device for determining an aggregation level according to an embodiment of the present application. Figure 5 As shown, the device includes:

[0074] A first acquisition module 50 is configured to acquire channel quality indication information reported by the terminal in a first period;

[0075] A first determining module 52 is configured to determine an initial value of an aggregation level according to the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel;

[0076] The adaptive adjustment module 54 is used to adjust the initial value of the aggregation level according to the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain the final value of the aggregation level, wherein the second period is a scheduling period that is adjacent to the first period and is located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0077] Optionally, the resource occupancy parameters include: the occupancy rate of the control channel element; the adaptive adjustment module 54 is also used to: obtain the occupancy rate of the control channel element corresponding to each time slot in the second period, wherein the occupancy rate is the ratio of the number of resources of the control channel elements occupied by the physical downlink control channel to the total number of resources of the control channel elements; determine the resource restriction state of the physical downlink control channel in the second period based on the occupancy rate corresponding to the time slot; determine the network environment state corresponding to the first period based on the channel quality indication information reported by the terminal in the first period; adjust the initial value of the aggregation level based on the resource restriction state and the network environment state.

[0078] Optionally, determining the resource-restricted state of the physical downlink control channel within the second period based on the occupancy corresponding to the time slot includes: judging whether the occupancy corresponding to each time slot within the second period is greater than a preset occupancy threshold value; when the occupancy is greater than the first preset occupancy threshold value, adding one to the first number; when the occupancy is less than the second preset occupancy threshold value, adding one to the second number, wherein the first number and the second number are used to characterize the resource-restricted state, the first number is used to characterize the number of time slots in which resources are restricted within the second period, and the second number is used to characterize the number of time slots in which resources are not restricted within the second period, the initial values of the first number and the second number are both zero, and the first preset occupancy threshold value is greater than the second preset occupancy threshold value.

[0079] Optionally, the network environment status includes: a good point environment, a midpoint environment, and a poor point environment, wherein the network quality of the good point environment is higher than that of the midpoint environment, and the network quality of the midpoint environment is higher than that of the poor environment; adjusting the initial value of the aggregation level according to the resource-constrained status and the network environment status includes: when the first number is greater than the limited number threshold and the network environment status is a good point environment, adjusting the initial value of the aggregation level downward by one level; when the second number is greater than the unlimited number threshold and the network environment status is a poor environment, adjusting the initial value of the aggregation level upward by one level; wherein, the higher the aggregation level, the more resources of the control channel elements occupied by the physical downlink control channel, and the better the demodulation performance of the physical downlink control channel.

[0080] Optionally, the uplink and downlink service feedback parameters include at least one of the following: a feedback status of downlink control information corresponding to the uplink service, and a feedback status of downlink control information corresponding to the downlink service; the adaptive adjustment module 54 is further configured to: convert the channel quality indication information into a corresponding signal-to-noise ratio value to obtain a first signal-to-noise ratio, where the first signal-to-noise ratio corresponds to an initial value of the aggregation level; modify the first signal-to-noise ratio according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain a second signal-to-noise ratio; and determine a final value of the aggregation level according to the second signal-to-noise ratio.

[0081] Optionally, the modifying the first signal-to-noise ratio according to the feedback status of the downlink control information corresponding to the uplink service and / or the feedback status of the downlink control information corresponding to the downlink service to obtain the second signal-to-noise ratio includes: performing activation detection on the physical uplink shared channel corresponding to the downlink control information of the uplink service in a case where the uplink service and the downlink service exist in the second period; and if the activation detection of the physical uplink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step size level, wherein the activation detection is used to determine whether the terminal has successfully received the downlink control information. If the activation detection is successful, the feedback status of the downlink control information is set to the terminal. The terminal successfully receives the downlink control information; if the activation detection of the physical uplink shared channel fails, performing activation detection on the physical downlink shared channel corresponding to the downlink control information of the downlink service; if the activation detection of the physical downlink shared channel is successful, increasing the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step levels; and if the activation detection of the physical downlink shared channel fails, decreasing the third signal-to-noise ratio by a target number of preset step levels, where the target number is determined based on the amount of feedback information returned by the terminal for the downlink control information; and determining a second signal-to-noise ratio based on the first signal-to-noise ratio and the adjusted third signal-to-noise ratio.

[0082] Optionally, the adaptive adjustment module 54 is further configured to: when only uplink traffic exists in the second period, perform activation detection on a physical uplink shared channel corresponding to the downlink control information of the uplink traffic, and when the activation detection of the physical uplink shared channel is successful, increase the third signal-to-noise ratio corresponding to the downlink control information by a preset step size level; and when the activation detection of the physical uplink shared channel fails, decrease the third signal-to-noise ratio by a preset step size level; and when only downlink traffic exists in the second period, perform activation detection on a physical uplink control channel corresponding to the downlink control information of the downlink traffic, and when the activation detection of the physical uplink control channel is successful, increase the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step sizes; and when the activation detection of the physical uplink control channel fails, decrease the third signal-to-noise ratio by a target number of preset step sizes.

[0083] It should be noted that the various modules in the above-mentioned aggregation level determination device can be program modules (for example, a set of program instructions that implement a certain specific function) or hardware modules. For the latter, it can be expressed in the following forms, but is not limited to this: the expression form of each of the above-mentioned modules is a processor, or the functions of each of the above-mentioned modules are implemented by a processor.

[0084] It should be noted that the aggregation level determination device provided in this embodiment can be used to perform Figure 2 The aggregation level determination method shown is as follows. Therefore, the relevant explanations and descriptions of the above-mentioned aggregation level determination method are also applicable to the embodiments of the present application and will not be repeated here.

[0085] An embodiment of the present application also provides a non-volatile storage medium, the non-volatile storage medium includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the following aggregation level determination method by running the computer program: obtaining channel quality indication information reported by the terminal in the first period; determining an initial value of the aggregation level based on the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; adjusting the initial value of the aggregation level based on the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain a final value of the aggregation level, wherein the second period is a scheduling period adjacent to the first period and located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0086] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the aggregation level determination method described in each embodiment of the present application: obtaining channel quality indication information reported by the terminal in the first period; determining an initial value of the aggregation level based on the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; adjusting the initial value of the aggregation level based on the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain a final value of the aggregation level, wherein the second period is a scheduling period adjacent to the first period and located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of the uplink and downlink service transmission.

[0087] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0088] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0089] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0090] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0091] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0092] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0093] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining an aggregation level, characterized in that: include: Obtaining channel quality indication information reported by the terminal in the first period; determining an initial value of an aggregation level according to the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; According to the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period, the initial value of the aggregation level is adjusted to obtain the final value of the aggregation level, wherein the second period is a scheduling period adjacent to the first period and before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of uplink and downlink service transmission.

2. The method for determining the aggregation level according to claim 1, wherein: The resource occupancy parameter includes: the occupancy rate of the control channel element; the method includes: Obtaining the occupancy rate of the control channel element corresponding to each time slot in the second period, wherein the occupancy rate is a ratio of the number of resources of the control channel element occupied by the physical downlink control channel to the total number of resources of the control channel element; determining, according to the occupancy rate corresponding to the time slot, a resource restriction state of the physical downlink control channel in the second period; Determining, according to the channel quality indication information reported by the terminal in the first period, a network environment state corresponding to the first period; An initial value of the aggregation level is adjusted according to the resource limitation state and the network environment state.

3. The method for determining the aggregation level according to claim 2, wherein: Determining, according to the occupancy rate corresponding to the time slot, the resource restriction state of the physical downlink control channel in the second period includes: Determining whether the occupancy rate corresponding to each of the time slots in the second period is greater than a preset occupancy rate threshold; When the occupancy rate is greater than a first preset occupancy rate threshold value, the first number is increased by one; when the occupancy rate is less than a second preset occupancy rate threshold value, the second number is increased by one, wherein the first number and the second number are used to characterize the resource-restricted state, the first number is used to characterize the number of time slots in which resources are restricted within the second period, and the second number is used to characterize the number of time slots in which resources are not restricted within the second period, the initial values of the first number and the second number are both zero, and the first preset occupancy rate threshold value is greater than the second preset occupancy rate threshold value.

4. The method for determining the aggregation level according to claim 3, wherein: The network environment status includes: a good environment, a mid-point environment, and a poor environment, wherein the network quality of the good environment is higher than the network quality of the mid-point environment, and the network quality of the mid-point environment is higher than the network quality of the poor environment; and adjusting the initial value of the aggregation level according to the resource limitation status and the network environment status includes: When the first number is greater than a limited number threshold and the network environment is in the good environment, adjusting the initial value of the aggregation level downward by one level; When the second number is greater than the unlimited number threshold and the network environment state is the poor environment, adjusting the initial value of the aggregation level upward by one level; The higher the aggregation level is, the more resources of the control channel element occupied by the physical downlink control channel is, and the better the demodulation performance of the physical downlink control channel is.

5. The method for determining the aggregation level according to claim 1, wherein: The uplink and downlink service feedback parameters include at least one of the following: feedback status of downlink control information corresponding to the uplink service, feedback status of downlink control information corresponding to the downlink service; the method includes: Converting the channel quality indication information into a corresponding signal-to-noise ratio value to obtain a first signal-to-noise ratio, wherein the first signal-to-noise ratio corresponds to an initial value of the aggregation level; Correcting the first signal-to-noise ratio according to a feedback status of downlink control information corresponding to the uplink service and / or a feedback status of downlink control information corresponding to the downlink service to obtain a second signal-to-noise ratio; A final value of the aggregation level is determined according to the second signal-to-noise ratio.

6. The method for determining the aggregation level according to claim 5, wherein: The step of correcting the first signal-to-noise ratio according to a feedback status of downlink control information corresponding to the uplink service and / or a feedback status of downlink control information corresponding to the downlink service to obtain a second signal-to-noise ratio includes: In a case where uplink traffic and downlink traffic exist in the second period, performing activation detection on a physical uplink shared channel corresponding to the downlink control information of the uplink traffic; If activation detection of the physical uplink shared channel is successful, increasing a third signal-to-noise ratio corresponding to the downlink control information by a preset step size level, wherein the activation detection is used to determine whether the terminal has successfully received the downlink control information. If the activation detection is successful, the feedback status of the downlink control information is that the terminal has successfully received the downlink control information; If the activation detection of the physical uplink shared channel fails, performing activation detection on the physical downlink shared channel corresponding to the downlink control information of the downlink service; If the activation detection of the physical downlink shared channel succeeds, increase the third signal-to-noise ratio corresponding to the downlink control information by a target number of preset step levels; and if the activation detection of the physical downlink shared channel fails, decrease the third signal-to-noise ratio by the target number of preset step levels, where the target number is determined based on the amount of feedback information returned by the terminal for the downlink control information; The second signal-to-noise ratio is determined according to the first signal-to-noise ratio and the adjusted third signal-to-noise ratio.

7. The method for determining the aggregation level according to claim 6, wherein: The method further comprises: When only uplink traffic exists in the second period, performing the activation detection on a physical uplink shared channel corresponding to the downlink control information of the uplink traffic, and when the activation detection of the physical uplink shared channel succeeds, increasing the third signal-to-noise ratio corresponding to the downlink control information by a preset step level; and when the activation detection of the physical uplink shared channel fails, decreasing the third signal-to-noise ratio by the preset step level; When only downlink traffic exists in the second period, activation detection is performed on a physical uplink control channel corresponding to the downlink control information of the downlink traffic, and when the activation detection of the physical uplink control channel is successful, the third signal-to-noise ratio corresponding to the downlink control information is increased by the target number of preset step levels; and when the activation detection of the physical uplink control channel fails, the third signal-to-noise ratio is decreased by the target number of preset step levels.

8. An aggregation level determination device, characterized in that: include: A first acquisition module is used to obtain channel quality indication information reported by the terminal in the first period; a first determining module, configured to determine an initial value of an aggregation level according to the channel quality indication information, wherein the aggregation level is used to indicate the number of control channel elements occupied by a physical downlink control channel; An adaptive adjustment module is used to adjust the initial value of the aggregation level according to the resource occupancy parameter and / or uplink and downlink service feedback parameter corresponding to the physical downlink control channel in the second period to obtain the final value of the aggregation level, wherein the second period is a scheduling period that is adjacent to the first period and is located before the first period, the resource occupancy parameter is used to characterize the resource occupancy status of the physical downlink control channel for the control channel element, and the uplink and downlink service feedback parameter is used to characterize the transmission status of uplink and downlink service transmission.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the processor is configured to run a program stored in the memory, wherein the aggregation level determination method according to any one of claims 1 to 7 is executed when the program is run.

10. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the aggregation level determination method according to any one of claims 1 to 7 by running the computer program.

11. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the aggregation level determination method according to any one of claims 1 to 7 are implemented.

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