Gain control method of base station receiving link, program product, electronic equipment and storage medium

Abstract

The invention provides a gain control method of a base station receiving link, a program product, electronic equipment and a storage medium, and is applied to the technical field of communication. The uplink predicted power of the terminal is calculated according to the uplink characteristic parameters and the uplink control parameters of the terminal, and the uplink predicted power represents the power of the next transmission signal of the terminal reaching an ADC inlet; for any uplink symbol, acquiring a scheduled terminal corresponding to the uplink symbol, and determining the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal; if a certain uplink symbol carries the service data, calculating an overflow gain corresponding to a receiving link of the base station according to the total power corresponding to the uplink symbol, the peak-to-average ratio of a received signal and the maximum input signal power supported by an ADC (Analog to Digital Converter); and determining a target gain of the receiving link according to the overflow gain and the calibration gain.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a gain control method, program product, electronic device and storage medium for a base station receiving link. Background Art

[0002] In the current wireless communication network represented by the fifth generation mobile communication technology (5G), the wireless base station is responsible for demodulating the terminal's transmitted signal. In this process, due to the limitations of device performance and product cost, the wireless base station can usually only demodulate the received signal within a certain power range. If the received signal power is too small, it will be submerged in the receiver's background noise and cannot be demodulated. If the received signal power is too large, the device will be saturated, resulting in signal distortion and cannot be demodulated.

[0003] In the current base station product design process, the above-mentioned problem of received signal power range is usually limited by the performance constraints of the analog-to-digital converter (ADC). That is, when the received signal with a large power fluctuation range reaches the ADC, the base station has low demodulation performance for the received signal. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a gain control method, program product, electronic device and storage medium for a base station receiving link, so as to solve the technical problem in the prior art that when a received signal with a large power fluctuation range reaches an ADC, the base station has low demodulation performance for the received signal.

[0005] In the first aspect, an embodiment of the present application provides a gain control method for a base station receiving link, comprising: for any terminal, calculating the uplink predicted power of the terminal based on the uplink characteristic parameters and uplink control parameters of the terminal, wherein the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal, the uplink control parameters include parameters for the base station to control the next transmitted signal of the terminal, and the uplink predicted power represents the power of the next transmitted signal of the terminal reaching the ADC entrance; for any uplink symbol, obtaining the scheduled terminal corresponding to the uplink symbol, and determining the total power corresponding to the uplink symbol based on the uplink predicted power corresponding to the scheduled terminal; if a certain uplink symbol carries service data, calculating the overflow gain corresponding to the receiving link of the base station based on the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC; determining the target gain of the receiving link based on the overflow gain and the calibration gain.

[0006] In the above scheme, a dynamic gain control method is adopted to dynamically adjust the gain of the receiving link according to the power of the received signal. In this way, even if the power fluctuation range of the received signal when it reaches the ADC is large, it can ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the demodulation performance of the base station for the received signal. In addition, the service type and receiving power of the received signal are predicted in advance by combining the high-level scheduling information of the base station and the physical layer measurement information. For uplink symbols without services, the gain is not adjusted, and for uplink symbols with services, the target gain calculation is completed in advance, which not only avoids unnecessary gain adjustment but also speeds up the gain adjustment speed.

[0007] In an optional implementation, the method of calculating the overflow gain corresponding to the receiving link of the base station according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC includes: determining the difference between the sum of the total power and the peak-to-average ratio and the maximum input signal power as the overflow gain. In the above scheme, the overflow gain of the receiving link can be determined according to the received signal power and the maximum input signal power supported by the ADC, so that the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirement when it reaches the ADC inlet, thereby improving the base station's demodulation performance of the received signal.

[0008] In an optional implementation, the target gain of the receiving link is determined according to the overflow gain and the calibration gain, including: if the overflow gain is greater than a gain threshold, the target gain is determined as the difference between the calibration gain and the overflow gain; otherwise, the target gain is determined as the calibration gain. In the above scheme, when the overflow gain is greater than the gain threshold, the gain of the receiving link can be dynamically adjusted according to the overflow gain to ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC inlet, thereby improving the base station's demodulation performance of the received signal.

[0009] In an optional implementation, before calculating the predicted uplink power of the terminal according to the uplink characteristic parameters and uplink control parameters of the terminal for any terminal, the method further includes: configuring the gain of the receiving link as the initial gain; determining the calibration gain according to the initial gain and the ADC input noise power; configuring the gain of the link as the calibration gain. In the above scheme, the gain of the receiving link is first initialized according to the ADC performance, thereby ensuring that the ADC has a high quantization accuracy for low-power signals; then, considering the different noise floor levels in different working scenarios, the gain of the receiving link is calibrated according to the ADC input noise power, so that the receiver can ensure a high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0010] In an optional implementation, determining the calibration gain according to the initial gain and the ADC input noise power includes: calculating the calibration gain according to the following formula: ; in, is the calibration gain, is the initial gain, is the receiver noise floor relative gain threshold, is the ADC input noise power, The noise floor power of the ADC is fixed. In the above scheme, the initial gain can be determined according to the ADC performance, and the gain of the receiving link is initialized based on the initial gain, thereby ensuring that the ADC has a high quantization accuracy for low-power signals.

[0011] In an optional implementation manner, before configuring the gain of the receiving link as the initial gain, the method further includes: calculating the initial gain according to the following formula: ; in, is the working bandwidth of the receiving link, In the above scheme, the calibration gain can be determined according to the ADC input noise power, and the gain of the receiving link can be calibrated based on the calibration gain, so that the receiver can ensure high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0012] In an optional embodiment, after determining the target gain of the receiving link according to the overflow gain and the calibration gain, the method further includes: adjusting the gain of the receiving link to the target gain at the start time of receiving the uplink symbol. In the above scheme, the target gain is calculated in advance and the analog device is controlled to take effect at the start time of receiving the uplink symbol. Since the data at the start position of the uplink symbol generally does not participate in the signal demodulation process, the influence of signal distortion in the gain adjustment process on the demodulation performance can be avoided.

[0013] In the second aspect, an embodiment of the present application provides a gain control device for a base station receiving link, comprising: a first calculation module, for calculating, for any terminal, the uplink predicted power of the terminal according to the uplink characteristic parameters and uplink control parameters of the terminal, wherein the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal, the uplink control parameters include parameters for the base station to control the next transmitted signal of the terminal, and the uplink predicted power represents the power of the next transmitted signal of the terminal reaching the ADC entrance; an acquisition module, for acquiring, for any uplink symbol, the scheduled terminal corresponding to the uplink symbol, and determining the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal; a second calculation module, for calculating the overflow gain corresponding to the receiving link of the base station according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC if a certain uplink symbol carries service data; a first determination module, for determining the target gain of the receiving link according to the overflow gain and the calibration gain.

[0014] In the above scheme, a dynamic gain control method is adopted to dynamically adjust the gain of the receiving link according to the power of the received signal. In this way, even if the power fluctuation range of the received signal when it reaches the ADC is large, it can ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the demodulation performance of the base station for the received signal. In addition, the service type and receiving power of the received signal are predicted in advance by combining the high-level scheduling information of the base station and the physical layer measurement information. For uplink symbols without services, the gain is not adjusted, and for uplink symbols with services, the target gain calculation is completed in advance, which not only avoids unnecessary gain adjustment but also speeds up the gain adjustment speed.

[0015] In an optional implementation, the second calculation module is specifically used to: determine the difference between the sum of the total power and the peak-to-average ratio and the maximum input signal power as the overflow gain. In the above scheme, the overflow gain of the receiving link can be determined according to the received signal power and the maximum input signal power supported by the ADC, so that the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the demodulation performance of the base station for the received signal.

[0016] In an optional implementation, the first determination module is specifically used to: if the overflow gain is greater than the gain threshold, determine the target gain as the difference between the calibration gain and the overflow gain; otherwise, determine the target gain as the calibration gain. In the above scheme, when the overflow gain is greater than the gain threshold, the gain of the receiving link can be dynamically adjusted according to the overflow gain to ensure that the received signal meets the ADC's input signal power requirement when it reaches the ADC inlet, thereby improving the demodulation performance of the base station for the received signal.

[0017] In an optional implementation, the gain control device of the base station receiving link also includes: a first configuration module, used to configure the gain of the receiving link as an initial gain; a second determination module, used to determine the calibration gain according to the initial gain and the ADC input noise power; a second configuration module, used to configure the gain of the link as the calibration gain. In the above scheme, the gain of the receiving link is first initialized according to the ADC performance, thereby ensuring that the ADC has a high quantization accuracy for low-power signals; then, considering the different background noise levels in different working scenarios, the gain of the receiving link is calibrated according to the ADC input noise power, so that the receiver can ensure a high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0018] In an optional implementation manner, the second determination module is specifically configured to calculate the calibration gain according to the following formula: ; in, is the calibration gain, is the initial gain, is the receiver noise floor relative gain threshold, is the ADC input noise power, The noise floor power of the ADC is fixed. In the above scheme, the initial gain can be determined according to the ADC performance, and the gain of the receiving link is initialized based on the initial gain, thereby ensuring that the ADC has a high quantization accuracy for low-power signals.

[0019] In an optional implementation manner, the gain control device of the base station receiving link further includes: a third calculation module, configured to calculate the initial gain according to the following formula: ; in, is the working bandwidth of the receiving link, In the above scheme, the calibration gain can be determined according to the ADC input noise power, and the gain of the receiving link can be calibrated based on the calibration gain, so that the receiver can ensure high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0020] In an optional embodiment, the gain control device of the base station receiving link further includes: an adjustment module, which is used to adjust the gain of the receiving link to the target gain at the start time of receiving the uplink symbol. In the above scheme, the target gain is calculated in advance and the analog device is controlled to take effect at the start time of receiving the uplink symbol. Since the data at the start position of the uplink symbol generally does not participate in the signal demodulation process, the influence of signal distortion in the gain adjustment process on the demodulation performance can be avoided.

[0021] In a third aspect, an embodiment of the present application provides a computer program product, comprising computer program instructions, which, when read and executed by a processor, execute the gain control method for a base station receiving link as described in the first aspect.

[0022] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory and a bus; the processor and the memory communicate with each other through the bus; the memory stores computer program instructions that can be executed by the processor, and the processor calls the computer program instructions to execute the gain control method of the base station receiving link as described in the first aspect.

[0023] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer program instructions. When the computer program instructions are executed by a computer, the computer executes the gain control method for the base station receiving link as described in the first aspect.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following specifically cites the embodiments of the present application and describes them in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A flow chart of a gain control method for a base station receiving link provided in an embodiment of the present application; Figure 2 A structural block diagram of a gain control device for a base station receiving link provided in an embodiment of the present application; Figure 3 A structural block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] Due to the limitations of device performance and product cost, wireless base stations can usually only demodulate received signals within a certain power range. If the received signal power is too small, it will be submerged in the background noise of the receiver and cannot be demodulated. If the received signal power is too large, the device will be saturated, resulting in signal distortion and cannot be demodulated. To address the above problems, the existing technology generally uses fixed gain control or dynamic gain control to adjust the gain of the base station receiving link.

[0028] Fixed gain control configures the base station receiving link gain to a fixed value based on the product's device performance and application scenario requirements. Fixed gain control has the following problems: 1. It has high performance requirements for ADC devices (ADC needs to support a larger input power range); 2. It is not suitable for scenarios where the base station receiving signal power fluctuates greatly; 3. If the application scenario does not match the gain configuration, it will lead to performance loss.

[0029] Dynamic gain control is to adaptively adjust the gain of the receiving link according to the power of the received signal; the specific method is to continuously detect the power of the ADC output signal through the base station. If it exceeds a certain threshold (too large or too small), the ADC input signal is adjusted to a reasonable range by adjusting the receiving link gain. The dynamic gain control method has the following problems: 1. Since the gain adjustment of the receiving link is implemented through analog devices, the ADC output signal power detection and gain adjustment will produce delays. Therefore, if the signal power changes quickly, the dynamic gain adjustment speed may not keep up with the speed of signal power change, resulting in poor performance when the signal power changes frequently; 2. Since the gain adjustment of analog devices will cause signal distortion for a period of time, each gain adjustment will cause the signal quality to decrease for a certain period of time, which will significantly reduce the demodulation performance of the base station.

[0030] Based on the problems existing in the above-mentioned fixed gain control and dynamic gain control, an embodiment of the present application provides a gain control method for a base station receiving link, which is applied to a base station, and the base station dynamically adjusts the gain of the receiving link according to the received signal power, thereby improving the demodulation performance of the base station for the received signal. Among them, the above-mentioned base station receiving link refers to the link between the antenna module signal output point and the ADC signal input point. The technical solution in the embodiment of the present application will be described below in conjunction with the drawings in the embodiment of the present application.

[0031] Please refer to Figure 1 , Figure 1A flow chart of a gain control method for a base station receiving link provided in an embodiment of the present application, the gain control method for the base station receiving link may specifically include the following steps: Step S101: For any terminal, the uplink predicted power of the terminal is calculated according to the uplink characteristic parameters and uplink control parameters of the terminal.

[0032] Step S102: for any uplink symbol, obtain the scheduled terminal corresponding to the uplink symbol, and determine the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal.

[0033] Step S103: If a certain uplink symbol carries service data, the overflow gain corresponding to the receiving link of the base station is calculated according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC.

[0034] Step S104: determining a target gain of the receiving link according to the overflow gain and the calibration gain.

[0035] Specifically, in the above step S101, the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal. It should be noted that the embodiment of the present application does not specifically limit the specific implementation of the above uplink characteristic parameters, for example: the uplink characteristic parameters may include the power of the last transmitted signal when it reaches the ADC entrance and the signal bandwidth of the last uplink data channel signal.

[0036] As an implementation method, the power headroom reported by the user corresponds to a specific physical channel. For example, the 5G communication protocol specifies that the terminal Reported power reservation (Unit: dB) Corresponding user An uplink data channel signal , then the base station can determine according to the communication protocol rules Signal bandwidth , and count the power of the transmitted signal when it reaches the ADC entrance (Unit: dBm) and signal-to-noise ratio .

[0037] The uplink control parameters include the parameters of the next signal transmitted by the base station to control the terminal. It should be noted that the embodiments of the present application do not specifically limit the specific implementation of the above uplink control parameters. For example, the uplink control parameters include the power adjustment signaling sent by the base station to the terminal and the bandwidth of the next signal transmission.

[0038] As an implementation method, the base station first calculates the maximum power of the terminal's transmitted signal arriving at the ADC entrance according to the following formula: (Unit: dBm): ; Then, the power adjustment signaling sent to the terminal is determined based on the next signal service type of the terminal, the channel bandwidth and the demodulation capability of the base station. (Unit: dB, its function is to increase or decrease the power spectrum density of the transmitted signal, and ensure that it does not exceed the maximum transmit power of the terminal), so that the next time the terminal transmits a signal, it can have a certain signal quality level when it reaches the base station.

[0039] The uplink predicted power represents the power of the next transmitted signal of the terminal reaching the ADC entrance.

[0040] It can be understood that the base station can receive transmission signals sent by multiple terminals, and for any one of the multiple terminals, the uplink predicted power of the terminal can be calculated based on the uplink characteristic parameters and uplink control parameters of the terminal.

[0041] It should be noted that the embodiment of the present application does not specifically limit the specific implementation method for calculating the above-mentioned uplink predicted power, and those skilled in the art can make appropriate adjustments according to actual conditions. For example, the above-mentioned uplink predicted power can be calculated according to the following formula : ; in, For Terminal The bandwidth of the next transmitted signal.

[0042] In the above step S102, the specific meaning of the uplink symbol in the embodiment of the present application may vary according to different protocol specifications, and the embodiment of the present application does not specifically limit this. For example, in a 5G system, both the base station and the terminal use orthogonal frequency division multiplexing (OFDM) technology to transmit signals. At this time, the uplink symbol may refer to one OFDM symbol transmitted by the terminal to the base station.

[0043] The scheduled terminals refer to the set of terminals that can perform data transmission on a specific uplink symbol. It can be understood that the uplink transmission resources are divided into multiple uplink symbols in the time domain. , you can get the uplink symbol The corresponding set of scheduled terminals As an implementation method, the above-mentioned scheduled terminal set can be obtained according to the system scheduling information. .

[0044] Further, the base station may determine the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal. As an implementation method, the total power may be determined according to the following formula: : .

[0045] After the above step S102, the base station can determine the uplink symbol Whether the uplink carries service data, if the uplink symbol If the uplink symbol does not carry service data, the gain of the receiving link does not need to be adjusted; If the receiving link carries service data, the gain of the receiving link can be adjusted. In the embodiment of the present application, the target gain of the receiving link can be determined by executing the subsequent steps S103 and S104.

[0046] In the above step S103, the peak-to-average ratio of the received signal refers to the ratio of the peak power to the average power of the received signal. The value range of (unit: dB) can be .

[0047] Different ADC models support different maximum input signal powers. Therefore, you can obtain the maximum input signal power supported by the ADC by consulting the device manual or testing. (Unit: dBm).

[0048] According to the total power determined in step S102 , and the peak-to-average ratio of the above received signal , Maximum input signal power supported by ADC The overflow gain corresponding to the receiving link of the base station is calculated. Then, in the above step S104, the target gain of the receiving link can be determined according to the above overflow gain and the calibration gain.

[0049] The calibration gain is a gain determined before the terminal accesses the cell and used to calibrate the gain of the receiving link. It is understandable that the calibration gain in different working scenarios may be the same or different. As an implementation method, the calibration gain may be determined according to the performance of the ADC.

[0050] It should be noted that the gain of the receiving link may include the gain of the digital step attenuator (DSA) and other gains except DSA; wherein the gain of DSA is an adjustable gain, and other gains except DSA are fixed gains. Therefore, the calibration gain and target gain involved in the embodiments of the present application may refer to the gain of DSA or the overall gain of the receiving link (i.e., the gain of DSA plus the fixed gain), and the embodiments of the present application do not make specific limitations on this.

[0051] In the above scheme, a dynamic gain control method is adopted to dynamically adjust the gain of the receiving link according to the power of the received signal. In this way, even if the power fluctuation range of the received signal when it reaches the ADC is large, it can ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the demodulation performance of the base station for the received signal. In addition, the service type and receiving power of the received signal are predicted in advance by combining the high-level scheduling information of the base station and the physical layer measurement information. For uplink symbols without services, the gain is not adjusted, and for uplink symbols with services, the target gain calculation is completed in advance, which not only avoids unnecessary gain adjustment but also speeds up the gain adjustment speed.

[0052] Further, based on the above embodiment, an implementation method of determining the overflow gain is introduced below. In this implementation method, the above step S103 may specifically include the following steps: The upward symbol The difference between the sum of the corresponding total power and the peak-to-average ratio of the received signal and the maximum input signal power supported by the ADC is determined as the overflow gain corresponding to the receiving link of the base station.

[0053] Specifically, the above overflow gain can be determined according to the following formula: : .

[0054] In the above scheme, the overflow gain of the receiving link can be determined according to the received signal power and the maximum input signal power supported by the ADC, so that the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirement when it reaches the ADC entrance, thereby improving the base station's demodulation performance of the received signal.

[0055] Further, based on the above embodiment, an implementation method for determining the target gain is introduced below. In this implementation method, the above step S104 may specifically include the following steps: If the overflow gain corresponding to the receiving link of the base station is greater than the gain threshold, the target gain corresponding to the receiving link of the base station is determined as the difference between the calibration gain and the overflow gain; otherwise, the target gain corresponding to the receiving link of the base station is determined as the calibration gain.

[0056] Specifically, the embodiments of the present application do not specifically limit the specific implementation of the above-mentioned gain threshold, and those skilled in the art may make appropriate adjustments according to actual conditions. For example, the gain threshold may be 0 dB, 0.1 dB or -0.1 dB.

[0057] To calibrate the gain And target gain Taking the gain of DSA as an example, the above target gain can be determined according to the following formula : .

[0058] In the above scheme, when the overflow gain is greater than the gain threshold, the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the base station's demodulation performance of the received signal.

[0059] Further, based on the above embodiment, before the above step S101, the gain control method of the base station receiving link provided in the embodiment of the present application may further include the following steps: Step 1) Configure the gain of the receiving link to the initial gain.

[0060] Step 2) determines the calibration gain based on the initial gain and the ADC input noise power.

[0061] Step 3) Configure the link gain to the calibration gain.

[0062] Specifically, in the above step 1), the initial gain is an initial gain determined before the terminal accesses the cell, which is used to ensure that the ADC has a higher quantization accuracy for low-power signals. As an implementation method, the above initial gain can be determined based on the performance of the ADC. It should be noted that the initial gain involved in the embodiment of the present application can refer to the gain of the DSA or the overall gain of the receiving link (i.e., the gain of the DSA plus the fixed gain), and the embodiment of the present application does not make specific limitations on this.

[0063] In the above step 2), since there is no business data at this time, the input signal of the ADC is the system background noise of the receiving link, so the ADC input noise power can be obtained by calculating the input power of the ADC, and then the calibration gain can be determined according to the initial gain and the ADC input noise power.

[0064] It can be understood that the above steps 1) to 3) can be performed before the initial access of the terminal, that is, before the base station starts to establish a cell, the gain of the base station receiving link can be first configured to the initial gain, and then the input power of the ADC is calculated to obtain the ADC input noise power, and finally the gain of the base station receiving link can be adjusted to the calibration gain.

[0065] In the above scheme, the gain of the receiving link is first initialized according to the ADC performance, thereby ensuring that the ADC has a high quantization accuracy for low-power signals; then, considering the different noise floor levels in different working scenarios, the gain of the receiving link is calibrated according to the ADC input noise power, so that the receiver can ensure a high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0066] Further, based on the above embodiment, the calibration gain And the initial gain Taking the gain of DSA as an example, the calibration gain can be calculated according to the following formula: ; in, is the receiver noise floor relative gain threshold, is the ADC input noise power, Fixed noise floor power for ADC.

[0067] Specifically, the above receiver noise floor relative gain threshold The gain that characterizes the natural noise floor is equivalent to the ADC noise floor, which affects the sensitivity of the receiver. As an implementation method, the value range of the receiver noise floor relative gain threshold can be .

[0068] ADC fixed noise floor power It can be obtained from the device manual or test. Specifically, it can be described as a certain power background noise generated at the output end when the ADC is working. The background noise is equivalent to the power The output generated after the noise input is fed into the ADC.

[0069] In the above formula This part characterizes the difference between the initial gain and the calibration gain, that is, if the initial gain is the same as the calibration gain, then This part is equal to 0.

[0070] In the above scheme, the initial gain can be determined according to the ADC performance, and the gain of the receiving link can be initialized based on the initial gain, thereby ensuring that the ADC has a high quantization accuracy for low-power signals.

[0071] Further, based on the above embodiment, the calibration gain And the initial gain Taking the gain of DSA as an example, the initial gain can be calculated according to the following formula: ; in, is the working bandwidth of the receiving link, is the fixed gain of the receive link.

[0072] Specifically, in the above formula This part represents the theoretical power of the natural noise floor. The above formula represents the power of the natural noise floor relative to the noise floor power quantized by the ADC and the relative gain threshold of the receiver noise floor.

[0073] In the above scheme, the calibration gain can be determined according to the ADC input noise power, and the gain of the receiving link can be calibrated based on the above calibration gain, so that the receiver can ensure high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0074] Further, based on the above embodiment, after the above step S104, the gain control method of the base station receiving link provided in the embodiment of the present application may further include the following steps: At the start time of receiving the uplink symbol, the gain of the receiving link is adjusted to the target gain.

[0075] Specifically, taking the 5G communication system as an example, since the starting position of receiving OFDM symbols in the 5G communication system is the beginning of the symbol cyclic prefix (CP), and the CP data does not participate in the signal demodulation process, the target gain value is calculated in advance and the analog device is controlled to take effect at the starting reception time of the uplink symbol (that is, the starting position of the CP of each uplink symbol), which avoids the influence of signal distortion in the gain adjustment process on the demodulation performance.

[0076] In the above scheme, the target gain is calculated in advance and the analog device is controlled to take effect at the starting reception time of the uplink symbol. Since the data at the starting position of the uplink symbol generally does not participate in the signal demodulation process, the influence of signal distortion in the gain adjustment process on the demodulation performance can be avoided.

[0077] Please refer to Figure 2 , Figure 2A structural block diagram of a gain control device for a base station receiving link provided in an embodiment of the present application, the gain control device 200 for the base station receiving link includes: a first calculation module 201, which is used to calculate the uplink predicted power of the terminal for any terminal according to the uplink characteristic parameters and uplink control parameters of the terminal, wherein the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal, the uplink control parameters include parameters for the base station to control the next transmitted signal of the terminal, and the uplink predicted power represents the next transmitted signal of the terminal to reach the ADC entrance power; an acquisition module 202, used for acquiring, for any uplink symbol, a scheduled terminal corresponding to the uplink symbol, and determining the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal; a second calculation module 203, used for calculating the overflow gain corresponding to the receiving link of the base station according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal and the maximum input signal power supported by the ADC if a certain uplink symbol carries service data; a first determination module 204, used for determining the target gain of the receiving link according to the overflow gain and the calibration gain.

[0078] In the above scheme, a dynamic gain control method is adopted to dynamically adjust the gain of the receiving link according to the power of the received signal. In this way, even if the power fluctuation range of the received signal when it reaches the ADC is large, it can ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the demodulation performance of the base station for the received signal. In addition, the service type and receiving power of the received signal are predicted in advance by combining the high-level scheduling information of the base station and the physical layer measurement information. For uplink symbols without services, the gain is not adjusted, and for uplink symbols with services, the target gain calculation is completed in advance, which not only avoids unnecessary gain adjustment but also speeds up the gain adjustment speed.

[0079] Further, based on the above embodiment, the second calculation module 203 is specifically used to: determine the difference between the sum of the total power and the peak-to-average ratio and the maximum input signal power as the overflow gain.

[0080] In the above scheme, the overflow gain of the receiving link can be determined according to the received signal power and the maximum input signal power supported by the ADC, so that the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirement when it reaches the ADC entrance, thereby improving the base station's demodulation performance of the received signal.

[0081] Further, based on the above embodiment, the first determination module 204 is specifically used to: if the overflow gain is greater than the gain threshold, determine the target gain as the difference between the calibration gain and the overflow gain; otherwise, determine the target gain as the calibration gain.

[0082] In the above scheme, when the overflow gain is greater than the gain threshold, the gain of the receiving link can be dynamically adjusted according to the above overflow gain to ensure that the received signal meets the ADC's input signal power requirements when it reaches the ADC entrance, thereby improving the base station's demodulation performance of the received signal.

[0083] Further, based on the above embodiment, the gain control device 200 of the base station receiving link also includes: a first configuration module, used to configure the gain of the receiving link as an initial gain; a second determination module, used to determine the calibration gain based on the initial gain and the ADC input noise power; and a second configuration module, used to configure the gain of the link as the calibration gain.

[0084] In the above scheme, the gain of the receiving link is first initialized according to the ADC performance, thereby ensuring that the ADC has a high quantization accuracy for low-power signals; then, considering the different noise floor levels in different working scenarios, the gain of the receiving link is calibrated according to the ADC input noise power, so that the receiver can ensure a high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0085] Further, based on the above embodiment, the second determination module is specifically used to calculate the calibration gain according to the following formula: ; in, is the calibration gain, is the initial gain, is the receiver noise floor relative gain threshold, is the ADC input noise power, Fixed noise floor power for ADC.

[0086] In the above scheme, the initial gain can be determined according to the ADC performance, and the gain of the receiving link can be initialized based on the initial gain, thereby ensuring that the ADC has a high quantization accuracy for low-power signals.

[0087] Further, based on the above embodiment, the gain control device 200 of the base station receiving link further includes: a third calculation module, configured to calculate the initial gain according to the following formula: ; in, is the working bandwidth of the receiving link, is the fixed gain of the receiving link.

[0088] In the above scheme, the calibration gain can be determined according to the ADC input noise power, and the gain of the receiving link can be calibrated based on the above calibration gain, so that the receiver can ensure high ADC quantization accuracy for the terminal access signal in different working scenarios.

[0089] Further, based on the above embodiment, the gain control device 200 of the base station receiving link further includes: an adjustment module, which is used to adjust the gain of the receiving link to the target gain at the start time of the uplink symbol reception.

[0090] In the above scheme, the target gain is calculated in advance and the analog device is controlled to take effect at the starting reception time of the uplink symbol. Since the data at the starting position of the uplink symbol generally does not participate in the signal demodulation process, the influence of signal distortion in the gain adjustment process on the demodulation performance can be avoided.

[0091] Please refer to Figure 3 , Figure 3 The structural block diagram of an electronic device provided in an embodiment of the present application, the electronic device 300 includes: at least one processor 301, at least one communication interface 302, at least one memory 303 and at least one communication bus 304. Among them, the communication bus 304 is used to realize the direct connection and communication of these components, the communication interface 302 is used to communicate signaling or data with other node devices, and the memory 303 stores machine-readable instructions executable by the processor 301. When the electronic device 300 is running, the processor 301 communicates with the memory 303 through the communication bus 304, and the machine-readable instructions are called by the processor 301 to execute the gain control method of the base station receiving link.

[0092] For example, the processor 301 of the embodiment of the present application reads a computer program from the memory 303 through the communication bus 304 and executes the computer program to implement the following method: for any terminal, the uplink predicted power of the terminal is calculated based on the uplink characteristic parameters and uplink control parameters of the terminal, wherein the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal, the uplink control parameters include parameters for the base station to control the next transmitted signal of the terminal, and the uplink predicted power represents the power of the next transmitted signal of the terminal reaching the ADC entrance; for any uplink symbol, the scheduled terminal corresponding to the uplink symbol is obtained, and the total power corresponding to the uplink symbol is determined based on the uplink predicted power corresponding to the scheduled terminal; if a certain uplink symbol carries service data, the overflow gain corresponding to the receiving link of the base station is calculated based on the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC; the target gain of the receiving link is determined based on the overflow gain and the calibration gain.

[0093] Among them, the processor 301 includes one or more, which can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 301 can be a general-purpose processor, including a central processing unit (CPU), a micro control unit (MCU), a network processor (NP) or other conventional processors; it can also be a dedicated processor, including a neural network processor (NPU), a graphics processor (GPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. In addition, when there are multiple processors 301, some of them can be general-purpose processors, and the other part can be dedicated processors.

[0094] The memory 303 includes one or more, which may be, but not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc.

[0095] Understandably, Figure 3 The structure shown is for illustration only. The electronic device 300 may also include Figure 3 More or fewer components as shown, or with Figure 3 Different configurations are shown. Figure 3 Each component shown in can be implemented by hardware, software or a combination thereof. In the embodiment of the present application, the electronic device 300 can be, but is not limited to, a physical device such as a desktop computer, a laptop computer, a smart phone, a smart wearable device, a vehicle-mounted device, etc., and can also be a virtual device such as a virtual machine. In addition, the electronic device 300 is not necessarily a single device, but can also be a combination of multiple devices, such as a server cluster, etc.

[0096] The embodiment of the present application also provides a computer program product, including a computer program stored on a computer-readable storage medium, the computer program including computer program instructions, when the computer program instructions are executed by the computer, the computer can execute the steps of the gain control method of the base station receiving link in the above embodiment, for example including: Step S101: for any terminal, calculate the uplink predicted power of the terminal according to the uplink characteristic parameters and uplink control parameters of the terminal. Step S102: for any uplink symbol, obtain the scheduled terminal corresponding to the uplink symbol, and determine the total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal. Step S103: If a certain uplink symbol carries service data, the overflow gain corresponding to the receiving link of the base station is calculated according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC. Step S104: Determine the target gain of the receiving link according to the overflow gain and the calibration gain.

[0097] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer program instructions. When the computer program instructions are executed by a computer, the computer executes the gain control method for a base station receiving link described in the aforementioned method embodiment.

[0098] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, 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 communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0099] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0100] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0101] It should be noted that if the function is implemented in the form of a software function module 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, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or 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: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0102] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0103] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gain control method for a base station receiving link, characterized in that: include: For any terminal, the uplink predicted power of the terminal is calculated according to the uplink characteristic parameters and uplink control parameters of the terminal, wherein the uplink characteristic parameters include parameters related to the last transmitted signal of the terminal, the uplink control parameters include parameters for the base station to control the next transmitted signal of the terminal, and the uplink predicted power represents the power of the next transmitted signal of the terminal reaching the ADC entrance; For any uplink symbol, obtain a scheduled terminal corresponding to the uplink symbol, and determine a total power corresponding to the uplink symbol according to the uplink predicted power corresponding to the scheduled terminal; If a certain uplink symbol carries service data, the overflow gain corresponding to the receiving link of the base station is calculated according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC; The target gain of the receiving link is determined according to the overflow gain and the calibration gain.

2. The gain control method of the base station receiving link according to claim 1, characterized in that: The calculating the overflow gain corresponding to the receiving link of the base station according to the total power corresponding to the uplink symbol, the peak-to-average ratio of the received signal, and the maximum input signal power supported by the ADC includes: The difference between the sum of the total power and the peak-to-average ratio and the maximum input signal power is determined as the overflow gain.

3. The gain control method of a base station receiving link according to claim 1, characterized in that: The determining the target gain of the receiving link according to the overflow gain and the calibration gain comprises: If the overflow gain is greater than a gain threshold, the target gain is determined as a difference between the calibration gain and the overflow gain; otherwise, the target gain is determined as the calibration gain.

4. The gain control method of a base station receiving link according to claim 1, characterized in that: Before calculating the uplink predicted power of any terminal according to the uplink characteristic parameters and uplink control parameters of the terminal, the method further includes: configuring the gain of the receiving link to be an initial gain; Determine the calibration gain according to the initial gain and the ADC input noise power; The gain of the link is configured to be the calibration gain.

5. The gain control method of the base station receiving link according to claim 4, characterized in that: The determining the calibration gain according to the initial gain and the ADC input noise power comprises: The calibration gain is calculated according to the following formula: ； in, is the calibration gain, is the initial gain, is the receiver noise floor relative gain threshold, is the ADC input noise power, Fixed noise floor power for ADC.

6. The gain control method of the base station receiving link according to claim 5, characterized in that: Before configuring the gain of the receiving link to be the initial gain, the method further includes: The initial gain is calculated according to the following formula: ； in, is the working bandwidth of the receiving link, is the fixed gain of the receiving link.

7. The gain control method of a base station receiving link according to any one of claims 1 to 6, characterized in that: After determining the target gain of the receiving link according to the overflow gain and the calibration gain, the method further includes: At the start time of receiving the uplink symbol, the gain of the receiving link is adjusted to the target gain.

8. A computer program product, characterized in that The method comprises computer program instructions, and when the computer program instructions are read and executed by a processor, the method for controlling the gain of a base station receiving link as claimed in any one of claims 1 to 7 is executed.

9. An electronic device, characterized in that: include: processor, memory, and bus; The processor and the memory communicate with each other via the bus; The memory stores computer program instructions that can be executed by the processor, and the processor calls the computer program instructions to execute the gain control method for the base station receiving link as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a computer, the computer executes the gain control method for a base station receiving link according to any one of claims 1 to 7.

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