A digital repeater power control method and system

Abstract

The application discloses a digital repeater power control method and system, and belongs to the technical field of communication. The method comprises the following steps: a signal receiving module receives and converts a downlink signal of a signal source base station into a data stream, and divides the data stream into a main path data stream and a branch path data stream; the main path data stream is sent to a gain control module, and the branch path data stream is sent to a signal demodulation module; the signal demodulation module demodulates the branch path data stream, extracts a base station reference signal and a base station reference signal, and sends the base station reference signal and the base station reference signal to a judgment module; when the judgment module judges that the base station reference signal is greater than or equal to a preset threshold value and less than the preset threshold value, or when the judgment module judges that the base station reference signal is greater than or equal to the preset threshold value and less than the preset threshold value, a digital domain gain amplification parameter is calculated and sent to the gain control module; and the gain control module performs digital domain amplification on the main path data stream. Through real-time demodulation of RSRP / RSSI, the gain can be improved in the digital domain when it is detected that the signal source signal strength is lower than the threshold value. The signal coverage strength and quality of the target area are enhanced.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a power control method and system for a digital repeater. Background Technology

[0002] With the gradual maturation of repeater technology, leveraging the load capacity of outdoor networks to expand coverage, access more users, and improve broadband utilization has become a preferred solution for operator network construction. Digital repeaters, in particular, with their internal digital signal processing units, effectively address the shortcomings of traditional analog repeaters, such as insufficient out-of-band suppression and excessive intermodulation spurious signals. This significantly improves indoor signal coverage quality and enhances user satisfaction.

[0003] Currently available digital repeater systems typically only obtain RSSI (Received Signal Strength Indication) values ​​when detecting signal power, but cannot demodulate the signal, making it difficult to distinguish between useful and interference signals. When processing signal power, the system defaults to treating all detected signal power as useful signal power. Furthermore, during operation, the uplink and downlink amplification gain difference of a repeater is usually set to a fixed value.

[0004] When the signal strength of the host base station is sufficiently high and the useful signal is much stronger than the interfering signal, a digital repeater can operate normally and output its nominal maximum power. However, if there are co-channel interfering signals with similar power to the useful signal of the host base station in the vicinity, and the digital repeater still amplifies all signals directly, it may exacerbate the interference and affect communication quality. On the other hand, when the distance between the host base station and the repeater is too far, or when there is severe obstruction between them, resulting in a weak signal strength at the receiving antenna, the digital repeater often struggles to reach its maximum output power, leading to problems such as reduced coverage area and decreased coverage effectiveness. These factors severely restrict the practical application scenarios and deployment flexibility of repeaters.

[0005] To address the issue of co-channel interference signals having power close to the useful signal, current solutions typically rely on on-site personnel using frequency scanning software to locate the interference source, obtain information about the interfering base station, and mitigate the problem by adjusting the base station's coverage azimuth, downtilt angle, or transmit power. For situations where the weak source signal leads to insufficient repeater output power, the primary method currently used is to manually adjust the repeater's uplink and downlink gain parameters. This involves two methods: first, on-site technicians directly connect to the equipment to modify the parameters; second, repeaters that support remote monitoring are remotely adjusted.

[0006] However, both of the above-mentioned coping strategies have obvious shortcomings: First, from a cost and efficiency perspective, both methods typically require personnel to be on-site, potentially involving multiple trips between the repeater deployment point and the host base station for surveying. Frequent coordination and communication between on-site debugging personnel also contribute to high labor and time costs and overall low efficiency. While remote modification can save manpower to some extent, adjusting the parameters of each device remotely remains a arduous task as the scale of repeater deployments expands, offering limited efficiency gains.

[0007] Secondly, regarding technical risks and practical effects, the gain parameters of a repeater cannot be adjusted arbitrarily, especially when increasing the gain. Improper settings exceeding the allowable range of the equipment's input-output isolation can easily cause the repeater to self-oscillate, and in severe cases, may even burn out the internal power amplifier tubes, leading to equipment return for repair and additional losses. Furthermore, the amplification mechanism of a repeater indiscriminately amplifies all signals (including noise and interference) within the operating frequency band. If the signal source itself has a poor SINR (signal-to-interference-plus-noise ratio), blindly increasing the gain will only further amplify noise and interference, failing to improve the actual coverage effect and still failing to meet practical usage requirements. Summary of the Invention

[0008] To address the aforementioned issues, this application provides a digital repeater power control method and system.

[0009] This application provides a power control method for a repeater, applied in a repeater, including: The signal receiving module receives and converts the downlink signal from the source base station into an IQ data stream, divides the IQ data stream into a main IQ data stream and a branch IQ data stream, sends the main IQ data stream to the gain control module, and sends the branch IQ data stream to the signal demodulation module. The signal demodulation module demodulates the split IQ data streams and extracts the base station reference signal. , and Send it to the judgment module; When the determination module determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when it determines that SINR ≥ preset SINR threshold and RSSI < preset RSSI threshold, it calculates the digital domain gain amplification parameter and sends it to the gain control module. The gain control module amplifies the main IQ data stream in the digital domain according to the digital domain gain amplification parameters.

[0010] Furthermore, when the determination module determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when it determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, it calculates the digital domain gain amplification parameter and sends it to the gain control module, including: The digital domain gain amplification parameters are calculated using the following formula and sent to the gain control module:

[0011]

[0012] in, This refers to the digital domain gain amplification parameter when RSRP < preset RSRP threshold; This is the digital domain gain amplification parameter when RSSI < preset RSSI threshold; The preset RSRP threshold, The preset RSSI threshold, These are the compensation values ​​for the repeater link parameters.

[0013] Furthermore, and The following formula also needs to be satisfied:

[0014]

[0015] in, For the transmit and receive isolation of the repeater itself, This is the fixed maximum gain of the repeater before digital domain gain amplification is enabled.

[0016] Furthermore, when the determination module determines that the SINR is less than the preset SINR threshold, it determines that the source signal quality is poor, does not activate the digital domain gain amplification, and outputs a source signal abnormality alarm. When the determination module determines that SINR ≥ preset SINR threshold and RSRP ≥ preset RSRP threshold, or when SINR ≥ preset SINR threshold and RSSI ≥ preset RSSI, it determines that the source signal strength is sufficient and no gain amplification is required.

[0017] Furthermore, the gain control module performs digital domain amplification on the main IQ data stream according to the digital domain gain amplification parameters, including: Under the constraint that the amplified signal power is not less than the maximum output power of the DAC of the chip used in the repeater, the gain control module performs digital domain amplification on the main IQ data stream according to the digital domain gain amplification parameters.

[0018] This application also provides a repeater power control system, including: The signal receiving module is used to receive and convert the downlink signal from the source base station into an IQ data stream, divide the IQ data stream into a main IQ data stream and a branch IQ data stream, send the main IQ data stream to the gain control module, and send the branch IQ data stream to the signal demodulation module. The signal demodulation module is used to demodulate the split IQ data streams and extract the base station reference signal. , and Send it to the judgment module; The determination module is used to calculate the digital domain gain amplification parameters and send them to the gain control module when SINR is greater than or equal to the preset SINR threshold and RSRP is less than the preset RSRP threshold, or when SINR is greater than or equal to the preset SINR threshold and RSSI is less than the preset RSSI threshold. The gain control module is used to digitally amplify the main IQ data stream according to the digital domain gain amplification parameters.

[0019] Furthermore, the determination module is specifically used to calculate the digital domain gain amplification parameter using the following formula and send it to the gain control module when determining that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when determining that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold:

[0020]

[0021] in, This refers to the digital domain gain amplification parameter when RSRP < preset RSRP threshold; This is the digital domain gain amplification parameter when RSSI < preset RSSI threshold; The preset RSRP threshold, The preset RSSI threshold, These are the compensation values ​​for the repeater link parameters.

[0022] Furthermore, and The following formula also needs to be satisfied:

[0023]

[0024] in, For the transmit and receive isolation of the repeater itself, This is the fixed maximum gain of the repeater before digital domain gain amplification is enabled.

[0025] This application also provides a readable storage medium storing executable instructions, which are executed by a processor to implement the above-described method.

[0026] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0027] Compared with the prior art, this application has the following advantages: 1. This invention, through real-time demodulation of RSRP / RSSI, can automatically and accurately boost the gain in the digital domain when the detected source signal strength is below a threshold. This effectively solves the problem of insufficient output power and sharply reduced coverage of traditional repeaters when the source signal is weak due to distance or obstruction, thereby significantly enhancing the signal coverage strength and quality of the target area.

[0028] 2. This invention achieves full automation of power adjustment, fundamentally changing the traditional operation mode that relies on manual on-site frequency scanning and troubleshooting or manual gain modification. It greatly reduces the reliance on on-site inspections by technical personnel, equipment commissioning, and multi-party communication, saving huge amounts of manpower and time costs and improving operation and maintenance efficiency.

[0029] 3. This invention dynamically binds the upper limit of gain adjustment to the actual transmit / receive isolation of the device, ensuring that the amplification of digital domain gain does not exceed the critical point for stable system operation. This protection mechanism effectively prevents device self-oscillation caused by improper gain settings, avoids hardware damage such as power amplifier tube burnout, and greatly improves the safety and reliability of the system.

[0030] 4. This invention introduces SINR as one of the core judgment conditions. Digital domain gain amplification will only be activated when both signal quality (SINR) and signal strength (RSRP / RSSI) meet the standards. This effectively avoids the drawback of blindly amplifying the signal (actually amplifying both the signal and the interference) when the source SINR is already poor (i.e., severe interference), which leads to further deterioration of the network environment. This invention achieves the transformation from "blind amplification" to "intelligent selective amplification".

[0031] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A network diagram of a digital fiber optic repeater according to an embodiment of this application is shown; Figure 2 A network diagram of a digital wireless repeater according to an embodiment of this application is shown; Figure 3 A diagram of a repeater power control system based on source quality adaptation according to an embodiment of this application is shown; Figure 4 A diagram of a repeater power control method based on adaptive source quality according to an embodiment of this application is shown. Detailed Implementation

[0034] This invention proposes a digital repeater power control method and system based on adaptive source quality. The system mainly includes a signal demodulation module, a judgment module, and a gain control module. During system operation, the signal demodulation module first demodulates the signal from the source base station to obtain key parameters. Subsequently, the judgment module compares these parameters with preset thresholds: if the SINR is lower than the threshold, it indicates significant interference to the source, and the system will issue a "source signal abnormality" alarm; if the SINR is greater than or equal to the threshold, the RSRP or RSSI strength is further determined: when RSRP or RSSI is greater than or equal to the corresponding threshold, the gain control module performs normal gain control; when RSRP or RSSI is lower than the threshold, the judgment module generates corresponding gain amplification parameters, and the gain control module directly amplifies the source signal in the digital domain.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The digital repeater involved in this application will be described first, and then the embodiments of this application will be described.

[0037] Digital repeaters are divided into digital fiber optic repeaters and digital wireless repeaters. The coupling method between the repeater and the signal source is divided into wired coupling and wireless coupling. Digital fiber optic repeaters use wired coupling, while digital wireless repeaters use wireless coupling.

[0038] 1) Digital fiber optic repeater A digital fiber optic repeater consists of a radio frequency access unit (MU) and a remote unit (RU), such as... Figure 1 As shown.

[0039] The RF access unit receives the downlink RF signal from the NR source via wired coupling into the digital fiber optic repeater system. After conversion into a digital signal, it is then photoelectrically converted to an optical signal and transmitted to the remote unit. Simultaneously, it converts the digital signal uploaded from the remote unit into an uplink RF signal and transmits it back to the source via a wired connection. The RF access unit must support remote monitoring and management of its affiliated remote units, as well as centralized upgrade capabilities.

[0040] The remote unit converts the digital signals sent by the radio frequency access unit into radio frequency signals to achieve 5G wireless coverage; at the same time, it converts the uplink radio frequency signals received wirelessly into digital signals and transmits them to the access unit.

[0041] 2) Digital wireless repeater The digital wireless repeater receives the downlink radio frequency signal from the 5G source via wireless coupling. After low-noise amplification, it is converted into a digital signal, digitized, and then converted back into a radio frequency signal. This signal is then amplified to provide wireless coverage for 5G signals. Simultaneously, user signals are received wirelessly and transmitted back to the source via analog-to-digital conversion, digital processing, and power amplification. The digital wireless repeater network is configured as follows: Figure 2 As shown.

[0042] Maximum gain and automatic gain adjustment are two core technologies that ensure effective coverage and stable operation of a repeater. Maximum gain refers to the repeater's maximum amplification capability of the input signal within its linear operating range. It determines the repeater's maximum amplification capability for weak signals, compensating for signal losses during spatial transmission and in the line, thus establishing the theoretical coverage range of the equipment. This parameter is set during equipment design and represents the static upper limit of the repeater's amplification capability.

[0043] Automatic gain control (AGC) is a mechanism used by repeaters to wirelessly couple to a host base station. By real-time monitoring of downlink LTE and NR signal power (RSSI), it automatically adjusts the downlink and uplink gain to prevent excessive uplink noise from interfering with the base station and to ensure coverage stability. A dynamic control mechanism, AGC adjusts the repeater's actual operating gain in the analog domain using a digitally controlled attenuator (DSA) based on changes in the received input signal strength, ensuring the repeater gain does not exceed its maximum gain. When the signal is within the required range, its core purpose is to prevent the repeater from saturating due to over-amplification when the input signal is too strong, leading to output signal distortion and interference. It also increases gain when the signal weakens to maintain coverage.

[0044] In short, maximum gain defines the "capacity ceiling" of a repeater, determining its upper limit for power output; while automatic gain adjustment (AGI) gives it the ability to "intelligently adjust" power levels based on the real-time wireless environment. Working together, these two parameters ensure that the repeater accurately controls power output in complex wireless environments, effectively extending coverage while maintaining excellent signal quality and system stability.

[0045] To achieve precise control of the repeater's power output, embodiments of this application provide, as follows: Figure 3 The diagram shown is of a repeater power control system based on adaptive signal source quality, which includes: a signal receiving module, a signal demodulation module, a decision module, and a gain control module. Signal receiving module: responsible for receiving and converting downlink signals from the source base station; Signal demodulation module: Responsible for real-time demodulation and calculation of key parameters characterizing the signal source quality, including RSRP, RSSI, and SINR, to provide data support for subsequent power control decisions.

[0046] Decision module: Responsible for outputting gain control signals through dual decision logic, as follows: 1) Adaptive condition determination: Based on the SINR value of the information source, determine whether it meets the threshold requirements for adaptive power adjustment.

[0047] 2) Source strength determination: By analyzing the RSRP or RSSI values ​​of the source, confirm whether its strength is lower than the minimum input signal strength threshold of the repeater.

[0048] 3) Control signal output: The module outputs a gain control signal only when the above two judgment conditions are met simultaneously, to control the repeater to increase the output power, so as to ensure that the coverage reaches the expected requirements.

[0049] 4) Gain Control Module: This module is responsible for achieving precise and safe gain adjustment. Its core logic includes two points: 1) Target power control: Based on the gain reference parameters provided by the judgment module, adjust the digital domain gain to make the digital domain power meet the output requirements, and ultimately ensure that the downlink of the repeater operates stably at the maximum nominal output power value.

[0050] 2) Self-oscillation risk avoidance: The digital domain gain cannot be increased indefinitely; an upper limit must be set based on the transmit / receive isolation of the repeater. If the gain exceeds the isolation, it will directly cause the equipment to oscillate. This limit can effectively avoid this risk.

[0051] like Figure 4 The diagram shown is a flowchart of a repeater power control method based on adaptive source quality according to an embodiment of this application, which includes the following steps: Step 401: The signal receiving module receives and converts the downlink signal from the source base station into two signals; Specifically, the signal receiving module receives and converts the downlink signal IQ data stream from the source base station, divides the IQ data stream into a main IQ data stream and a branch IQ data stream, sends the main IQ data stream to the gain control module, and sends the branch IQ data stream to the signal demodulation module. The signal receiving module here receives the raw downlink IQ data stream from the source base station transmitted from the Transceiver chip.

[0052] Step 402: The signal demodulation module demodulates the split IQ data streams and extracts the base station reference signal. , and Send it to the judgment module; Step 403: Determine if the module receives the reference signal. , and ; Step 404: The decision module calculates based on channel estimation and normalized unmodulated data. , and value; It should be noted that the signal unit of the three demodulated values ​​in step 402 is dBFs, which corresponds to voltage, while the unit of the unified value in step 404 is dB or dBm, which corresponds to power.

[0053] Step 405: The determination module determines whether SINR ≥ preset SINR threshold is true. If yes, proceed to step 407; otherwise, proceed to step 406. Step 406: The determination module reports an abnormal signal alarm from the source, and then proceeds to step 410; Step 407: The determination module determines whether RSRP < preset RSRP threshold is true, or whether RSSI < preset RSSI threshold is true. If either value is true, then proceed to step 408; otherwise, proceed to step 410. Step 408: The determination module generates digital domain gain amplification parameters and sends them to the gain control module, then proceeds to step 409; Step 409: The gain control module performs digital domain amplification on the main IQ data stream according to the digital domain gain amplification parameters, and then executes step 410; Step 410: Proceed to the next loop and jump to step 402.

[0054] The specific technical details involved in the above process are explained below: 1. Demodulation of key parameters: The main IQ data stream and the branch IQ data streams are distributed via digital replication, which has no impact on the actual data size or the information carried. The signal demodulation module extracts the modulated base station reference signal from the branch data streams based on 3GPP protocol definitions and using demodulation algorithms. , , .

[0055] SINR represents the signal-to-noise ratio (SNR) of the received signal. In practical applications, SINR is not obtained by directly measuring S, I, and N, but is calculated based on channel estimation, as follows: 1) The received signal Y on a certain CRS RE (Cell Specific Reference Signal Resource Element) can be represented as:

[0056] in: This represents the channel response from the source signal to the terminal. This indicates a known CRS sequence transmitted by the source cell. The channel response representing the interference signal. This indicates the power of the interference signal on the CRS sequence. This represents the noise floor within the total bandwidth.

[0057] 2) After the equipment collects the downlink signal from the base station, it uses known... and received To estimate the channel And key parameters: signal power ,in This is the estimated channel frequency response of the receiving source base station cell. It should be noted that the reference signal... Typically, it is the normalized power (i.e.) The average power is 1), therefore the signal power is equal to the square of the channel frequency response.

[0058] (1) Calculate the power of interference plus noise:

[0059] in, Indicates the power of the interference signal. Noise floor and error value within the total bandwidth range This includes interference signals from other cells or other wireless devices. , where n represents the number of CRS REs.

[0060] (2) The final SINR calculation formula is:

[0061] It is important to note that the final SINR value is calculated over multiple CRS REs and then averaged to obtain a more robust SINR.

[0062] It refers to the linear average power of the resource element (RE) carrying the cell-specific reference signal (CRS) within the measurement bandwidth. Its calculation formula is:

[0063] in: For the k-th CRS RE, the upper complex channel estimate or the received IQ sample is given, and M represents the number of sampling points. The calculated power value for the k-th RE: , and This is the IQ orthogonal component of the k-th RE. To calculate the linear average power of all (M) in-band CRS REs, 30 represents the algebraic computation amount from power dBW to dBm.

[0064] This represents the linear average of the total received power observed on all resource elements (REs) within N RBs of the specified OFDM symbol, considering only the measurement bandwidth. Its calculation formula is:

[0065] in: Let be the complex value of the k-th received baseband IQ sampling point. This indicates the calculation of the instantaneous power at this sampling point: , This represents the linear average of the power at all M sampling points within the entire bandwidth, where 30 represents the algebraic computation amount from power dBW to dBm.

[0066] 2. Logical judgment.

[0067] The signal demodulation module extracts key parameters from the received downlink signal from the source base station. , , After all values ​​are demodulated, they are input into the determination module, which performs the following logical determination: 1) If the quality of the source base station signal is not less than the set threshold by using the SINR value of the demodulated source base station signal, it means that the signal can be correctly received and demodulated by the terminal after amplification, and the service requirements can be fulfilled; otherwise, digital domain gain amplification will not be started, because at this time all the amplified signal is noise, which will cause users in the coverage area to be unable to access the network and cause interference; at the same time, the judgment module outputs an abnormal source signal alarm, which is reported through indicator lights or network management to assist maintenance personnel in locating problems and performing network maintenance.

[0068] 2) Determine the amplitude level of the received RSRP or RSSI value from the source base station. If the RSRP or RSSI signal is relatively strong, no digital domain gain amplification is required; the signal passes directly through the digital domain gain amplification module without any processing. If the amplitude is very low, compare it with the set judgment threshold. If it is less than the set judgment threshold, the digital domain gain amplification function needs to be activated.

[0069] 3) Based on the above two steps, the determination module activates the digital domain gain amplification function and calculates the digital domain gain amplification value using the following formula:

[0070]

[0071] in, This refers to the digital domain gain amplification parameter when RSRP < preset RSRP threshold; This is the digital domain gain amplification parameter when RSSI < preset RSSI threshold; The preset RSRP threshold, The preset RSSI threshold; These are the compensation values ​​for the repeater link parameters. The compensation is adjusted according to the specific application scenario and mode of the equipment.

[0072] or The RSRP and RSSI power values ​​of the received source base station demodulated by the demodulation module at the current device's receiving port can be used as a reference in the application as needed.

[0073] The final specific digital domain gain amplification parameters or It is then passed to the gain control module in the main signal stream.

[0074] In addition, to prevent excessive equipment gain from causing self-oscillation, the gain amplification parameters also need to be limited as follows:

[0075]

[0076] in, For the transmit and receive isolation of the repeater itself, This is the fixed maximum gain of the repeater before digital domain gain amplification is enabled.

[0077] 3. Gain control: The gain control module performs direct digital domain gain amplification on the main signal data based on the gain parameters input from the judgment module. The calculation formula is as follows:

[0078] Where: n is the index of the IQ sampling point.

[0079] For digitized radio frequency signals, data flow is often represented by a complex baseband IQ sampling sequence.

[0080] The final digital domain gain amplification formula, after expansion, is expressed as:

[0081]

[0082] In addition, the digital domain gain amplification also needs to meet a threshold limit to prevent the DAC of the transceiver from saturating and overflowing due to excessive digital domain gain.

[0083] in, This refers to the maximum input power of the DAC in the Transceiver used by the device. This maximum input power needs to be determined based on the specific Transceiver chip used.

[0084] The solutions in this application embodiment can be applied to, for example, Figure 1 The front MU of the two-level architecture of the digital fiber optic repeater shown can be applied to, for example... Figure 2 The wireless unit of the primary architecture of the digital direct wireless repeater shown.

[0085] This disclosure also provides an electronic device, including: a memory storing execution instructions; and a processor executing the execution instructions stored in the memory, causing the processor to perform any of the methods described above.

[0086] The hardware architecture of electronic devices / devices can be implemented using a bus architecture. A bus architecture can include any number of interconnect buses and bridges, depending on the specific application and overall design constraints of the hardware. A bus connects various circuits, including one or more processors, memories, and / or hardware modules. A bus can also connect various other circuits such as peripherals, voltage regulators, power management circuits, external antennas, etc. Buses can be Industry Standard Architecture (ISA) buses, Peripheral Component Interconnect (PCI) buses, or Extended Industry Standard Component (EISA) buses, etc. Buses can be categorized as address buses, data buses, control buses, etc.

[0087] For ease of explanation, certain steps of the above method are described in relation to modules. It should be understood that the corresponding module performing one or more steps of the above method may be one or more hardware modules specifically configured to perform the corresponding step, or implemented by a processor configured to perform the corresponding step, or stored in a computer-readable medium for implementation by a processor, or implemented by some combination thereof.

[0088] The specific implementation of each module in the above-mentioned device can be referred to the implementation process of the corresponding steps in the above-mentioned method implementation method of this disclosure, and will not be repeated here.

[0089] This disclosure also provides a readable storage medium storing a computer program that, when executed by a processor, is used to implement the methods described above. A "readable storage medium" can be any means capable of containing, storing, communicating, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples of a readable storage medium include: an electrical connection with one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable read-only memory (CDROM), etc.

[0090] This disclosure also provides a computer program product, the methods of which can be implemented wholly or partially through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented wholly or partially as a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed, all or part of the processes or functions of this disclosure are performed.

[0091] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A power control method for a digital repeater, characterized in that, Applications in repeaters include: The signal receiving module receives and converts the downlink signal from the source base station into an IQ data stream, divides the IQ data stream into a main IQ data stream and a branch IQ data stream, sends the main IQ data stream to the gain control module, and sends the branch IQ data stream to the signal demodulation module. The signal demodulation module demodulates the split IQ data streams and extracts the base station reference signal. , and Send it to the judgment module; When the determination module determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when it determines that SINR ≥ preset SINR threshold and RSSI < preset RSSI threshold, it calculates the digital domain gain amplification parameter and sends it to the gain control module. The gain control module amplifies the main IQ data stream in the digital domain according to the digital domain gain amplification parameters; When the determination module determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when it determines that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, it calculates the digital domain gain amplification parameters and sends them to the gain control module, including: The digital domain gain amplification parameters are calculated using the following formula and sent to the gain control module: in, This refers to the digital domain gain amplification parameter when RSRP < preset RSRP threshold; This is the digital domain gain amplification parameter when RSSI < preset RSSI threshold; The preset RSRP threshold, The preset RSSI threshold, These are the compensation values ​​for the repeater link parameters; The and The following formula also needs to be satisfied: in, For the transmit and receive isolation of the repeater itself, This is the fixed maximum gain of the repeater before digital domain gain amplification is enabled.

2. The method according to claim 1, characterized in that, When the determination module determines that the SINR is less than the preset SINR threshold, it judges that the source signal quality is poor, does not start the digital domain gain amplification, and outputs a source signal abnormality alarm. When the determination module determines that SINR ≥ preset SINR threshold and RSRP ≥ preset RSRP threshold, or when SINR ≥ preset SINR threshold and RSSI ≥ preset RSSI, it determines that the source signal strength is sufficient and no gain amplification is required.

3. The method according to claim 1, characterized in that, The gain control module performs digital domain amplification on the main IQ data stream according to the digital domain gain amplification parameters, including: Under the constraint that the amplified signal power is not less than the maximum output power of the DAC of the chip used in the repeater, the gain control module performs digital domain amplification on the main IQ data stream according to the digital domain gain amplification parameters.

4. A digital repeater power control system, characterized in that, include: The signal receiving module is used to receive and convert the downlink signal from the source base station into an IQ data stream, divide the IQ data stream into a main IQ data stream and a branch IQ data stream, send the main IQ data stream to the gain control module, and send the branch IQ data stream to the signal demodulation module. The signal demodulation module is used to demodulate the split IQ data streams and extract the base station reference signal. , and Send it to the judgment module; The determination module is used to calculate the digital domain gain amplification parameters and send them to the gain control module when SINR is greater than or equal to the preset SINR threshold and RSRP is less than the preset RSRP threshold, or when SINR is greater than or equal to the preset SINR threshold and RSSI is less than the preset RSSI threshold. The gain control module is used to digitally amplify the main IQ data stream according to the digital domain gain amplification parameters. The determination module, specifically used when determining that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, or when determining that SINR ≥ preset SINR threshold and RSRP < preset RSRP threshold, calculates the digital domain gain amplification parameter using the following formula and sends it to the gain control module: in, This refers to the digital domain gain amplification parameter when RSRP < preset RSRP threshold; This is the digital domain gain amplification parameter when RSSI < preset RSSI threshold; The preset RSRP threshold, The preset RSSI threshold, These are the compensation values ​​for the repeater link parameters; The and The following formula also needs to be satisfied: in, For the transmit and receive isolation of the repeater itself, This is the fixed maximum gain of the repeater before digital domain gain amplification is enabled.

5. A readable storage medium, characterized in that, The readable storage medium stores execution instructions, which, when executed by a processor, are used to implement the method of any one of claims 1 to 3.

6. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 3.

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