Signal processing method, apparatus, system, storage medium and program product

Abstract

The application relates to a signal processing method, device, system, storage medium and program product. The method comprises the following steps: for any next-level device, determining the AGC gain corresponding to the next-level device according to a preset threshold and the uplink power of the current uplink signal of the next-level device, and performing gain adjustment on the target uplink signal of the next-level device according to the AGC gain, so as to realize automatic gain control. The method is not only beneficial to reducing uplink combined noise, improving the SNR of the uplink signal of the communication interface and the dynamic range of the signal, thereby improving the uplink rate of the entire cell in the coverage area, but also saves the traffic judgment process, and does not need the corresponding carrier soft switching process of the AU device, so that the signal processing method of the embodiment is more efficient and simple.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a signal processing method, apparatus, system, storage medium, and program product. Background Technology

[0002] With the development of communication technology, indoor services are becoming increasingly common. To improve communication performance in indoor environments, distributed antenna systems (DAS) are being used more and more widely.

[0003] In traditional technology, indoor distribution equipment needs to obtain information such as the number of uplink paths, noise floor tolerance, and channel type information for data transmission. Then, based on the combination of the above information, the weights of each communication interface of the indoor distribution equipment are set to process the uplink data.

[0004] However, the uplink combining noise of traditional data processing technology is still relatively large, resulting in a low uplink rate for the entire cell in the coverage area. Summary of the Invention

[0005] Therefore, it is necessary to provide a signal processing method, apparatus, system, storage medium, and program product to address the aforementioned technical problems.

[0006] In a first aspect, embodiments of this application provide a signal processing method applied to a relay device in an indoor distributed antenna system (DAS). The DAS includes: a relay device and at least one downstream device of the relay device. The method includes:

[0007] For any next-level device, obtain the uplink power of the current uplink signal of the next-level device;

[0008] Based on the uplink power of the current uplink signal and the preset threshold, determine the automatic gain control (AGC) gain corresponding to the next level device;

[0009] The gain of the target uplink signal of the next-level device is adjusted based on the AGC gain.

[0010] Secondly, this application also provides a signal processing apparatus applied to a relay device in an indoor distributed antenna system (DAS). The DAS includes: a relay device and at least one downstream device of the relay device. The apparatus includes:

[0011] The acquisition module is used to acquire the uplink power of the current uplink signal of any next-level device.

[0012] The determination module is used to determine the automatic gain control (AGC) gain of the next-level device based on the uplink power of the current uplink signal and the preset threshold.

[0013] The adjustment module is used to adjust the gain of the target uplink signal of the next-level device according to the AGC gain.

[0014] Thirdly, this application also provides an indoor distribution system, which includes: a relay device and at least one downstream device of the relay device;

[0015] Among them, the relay equipment is used to obtain the uplink power of the current uplink signal of any next-level device;

[0016] The relay equipment is also used to determine the automatic gain control (AGC) gain of the next-level device based on the uplink power of the current uplink signal and the preset threshold, and to adjust the gain of the target uplink signal of the next-level device according to the AGC gain.

[0017] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the signal processing method of any one of the first aspects described above.

[0018] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the signal processing method of any one of the first aspects described above.

[0019] In the aforementioned signal processing methods, apparatus, systems, storage media, and program products, for any next-level device, the AGC gain corresponding to the next-level device is determined based on a preset threshold and the obtained uplink power of the current uplink signal of the next-level device, and the gain of the target uplink signal of the next-level device is adjusted according to the AGC gain. Compared with traditional technologies, in the embodiments of this application, the AGC gain corresponding to the next-level device can be determined based on the uplink power of the current uplink signal of any next-level device and a preset threshold to achieve automatic gain control. This not only helps to reduce uplink combining noise and improve the SNR and dynamic range of the uplink signal of the communication interface, thereby improving the uplink rate of the entire cell in the coverage area, but also eliminates the traffic volume judgment process and does not require the AU device to cooperate with the soft handover process of the carrier. The signal processing method of the embodiments of this application is more efficient and concise. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an indoor distribution system provided for an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the Hub device provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the AU device provided in the embodiments of this application;

[0024] Figure 4 This is a flowchart illustrating a signal processing method in one embodiment of this application;

[0025] Figure 5 A schematic diagram of open-loop AGC provided in an embodiment of this application;

[0026] Figure 6 This application provides an example of an open-loop AGC adjustment method. Figure 1 ;

[0027] Figure 7 This application provides an example of an open-loop AGC adjustment method. Figure 2 ;

[0028] Figure 8 A schematic diagram of a closed-loop AGC provided in an embodiment of this application;

[0029] Figure 9 This application provides an example of a closed-loop AGC adjustment method. Figure 1 ;

[0030] Figure 10 This application provides an example of a closed-loop AGC adjustment method. Figure 2 ;

[0031] Figure 11 A schematic diagram of the signal processing process of a traditional hub device. Figure 1 ;

[0032] Figure 12 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 1 ;

[0033] Figure 13 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 2 ;

[0034] Figure 14 A schematic diagram of the signal processing process of a conventional AU device. Figure 1 ;

[0035] Figure 15A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 1 ;

[0036] Figure 16 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 2 ;

[0037] Figure 17 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 1 ;

[0038] Figure 18 This is a flowchart illustrating a signal processing method in another embodiment of this application;

[0039] Figure 19 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 3 ;

[0040] Figure 20 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 2 ;

[0041] Figure 21 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 3 ;

[0042] Figure 22 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 4 ;

[0043] Figure 23 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 3 ;

[0044] Figure 24 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 4 ;

[0045] Figure 25 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 5 ;

[0046] Figure 26 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 6 ;

[0047] Figure 27 This is a schematic diagram of the signal processing device in one embodiment of this application;

[0048] Figure 28This is a schematic diagram of the structure of a relay device in one embodiment of this application. Detailed Implementation

[0049] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0050] The serial numbers assigned to the components in this application, such as "first" and "second", are used only to distinguish the described objects and have no sequential or technical meaning.

[0051] Figure 1 A schematic diagram of an indoor distribution system provided in an embodiment of this application, such as... Figure 1 As shown, the indoor distribution system provided in this application embodiment may include: at least one operator core network device ( Figure 1 The system includes, for example, core network equipment from operator A, core network equipment from operator B, and core network equipment from operator C; gateway (GW) equipment; access unit (AU) equipment; n hub equipment; and m distributed part (DP) equipment connected to each hub equipment; where n is a positive integer greater than 1, and m is an integer greater than 1. For example, n can be 4, 8, or 16, and m can be 8. Of course, the above indoor distribution system may also include other equipment, and this embodiment does not limit this.

[0052] The following embodiments of this application use uplink signal transmission as an example to briefly introduce the functions of each device in the indoor distribution system.

[0053] The DP device is used to convert the received uplink RF signal into uplink baseband digital signal 1 and send the uplink baseband digital signal 1 to the Hub device.

[0054] The Hub device is used to convert the uplink baseband digital signal 1 sent by each DP device into uplink baseband digital signal 2, and then send the uplink baseband digital signal 2 to the AU device; wherein, the transmission speed of the uplink baseband digital signal 2 is higher than that of the uplink baseband digital signal 1.

[0055] The AU device is used to parse the uplink baseband digital signal 2 sent by each Hub device to obtain the uplink baseband signal, and then send the uplink baseband signal to the GW device.

[0056] The GW device is used to determine the target core network device corresponding to the uplink baseband signal and send the uplink baseband signal to the target core network device.

[0057] It should be noted that the relay device involved in the embodiments of this application can adopt the signal processing method provided in the embodiments of this application. For example, the relay device involved in the embodiments of this application can be... Figure 1 The relay device in this application can be an AU device or a Hub device; where, when the relay device is an AU device, the next-level device of the relay device involved in this application embodiment can be a Hub device; when the relay device is a Hub device, the next-level device of the relay device involved in this application embodiment can be a DP device.

[0058] The signal processing method provided in this application can be applied to application scenarios where the traffic distribution of each communication interface is uneven (e.g., some communication interfaces have a large traffic volume, while others have a small traffic volume). This method helps reduce uplink combining noise and improves the uplink SNR of the communication interface, thereby increasing the uplink rate of the entire cell in the coverage area. Of course, the signal processing method provided in this application can also be applied to other scenarios, and this application does not limit its application to such applications.

[0059] For example, the communication interface between the DP device and the Hub device, and / or the communication interface between the Hub device and the AU device, may include, but is not limited to, the Common Public Radio Interface (CPRI).

[0060] Figure 2 This is a schematic diagram of the structure of the Hub device provided in the embodiments of this application, such as... Figure 2 As shown, compared to traditional hub devices, the hub device provided in this application embodiment adds an Automatic Gain Control (AGC) module. The AGC module is used to adjust the gain of the uplink signals sent by each DP device through its corresponding communication interface according to the signal processing method provided in this application embodiment. Additionally, an uplink combining module is used to combine the gain-adjusted signals and send them to the AU device; a downlink distribution module is used to distribute the downlink signals sent by the AU device to the corresponding DP devices.

[0061] Figure 3 This is a schematic diagram of the structure of the AU device provided in the embodiments of this application, such as... Figure 3As shown, compared to conventional AU devices, the AU device provided in this application embodiment adds an AGC module. The AGC module is used to adjust the gain of the uplink signals of each communication interface according to the signal processing method provided in this application embodiment. Additionally, an uplink combining module is used to combine the gain-adjusted signals and send them to the uplink demodulation module of the AU device, so that the uplink demodulation module can demodulate the combined signal. A downlink modulation module is used to send the modulated downlink signal to the downlink distribution module of the AU device, so that the downlink distribution module can distribute the downlink signal to the corresponding Hub device.

[0062] For example, other modules of the AU device may include, but are not limited to, the following: L1 module, L2 module, L3 module, and Operation and Management (OAM) module. The L1 module is a Layer 1 physical layer module of the 3rd Generation Partnership Project (3GPP) communication protocol; the L2 module is a Layer 2 data link layer module of the 3GPP communication protocol; and the L3 module is a Layer 3 network layer module of the 3GPP communication protocol. For instance, the L2 module may include, but is not limited to, modules such as Radio Link Control (RLC), Media Access Control (MAC), and Packet Data Convergence Protocol (PDCP); and the L3 module may include, but is not limited to, modules such as RRC.

[0063] The signal processing method provided in this application embodiment, compared with traditional technology, determines the AGC gain corresponding to the next-level device based on the uplink power of the current uplink signal of any next-level device and a preset threshold, and adjusts the gain of the target uplink signal of the next-level device according to the AGC gain. This method helps to reduce uplink combining noise, improve the uplink SNR of the communication interface, and thus improve the uplink rate of the entire cell in the coverage area.

[0064] In one embodiment, Figure 4 This is a flowchart illustrating a signal processing method in one embodiment of this application. The method of this embodiment can be applied to a relay device in an indoor distributed antenna system (DAS). The DAS may include, but is not limited to, a relay device and at least one downstream device of the relay device. Exemplarily, the relay device in this embodiment may include the aforementioned... Figure 1 Hub devices or AU devices in the system. For example... Figure 4 As shown, the method in this application embodiment may include the following steps:

[0065] Step S401: For any next-level device, obtain the uplink power of the current uplink signal of the next-level device.

[0066] In this step, for any next-level device of the relay device, the relay device can obtain the uplink power of the current uplink signal of the next-level device through uplink power detection.

[0067] Optionally, for any next-level device of the relay device, the relay device can obtain the uplink power corresponding to the current uplink signal of the next-level device by detecting the uplink power of the current uplink signal of the communication interface between the relay device and the next-level device.

[0068] For example, in the embodiments of this application, the current uplink signal of any next-level device can be the uplink signal received at the current moment by the communication interface between the relay device and the next-level device.

[0069] As another example, the current uplink signal of any next-level device involved in this application embodiment can be the uplink signal obtained after gain adjustment of the uplink signal received at the current moment by the communication interface between the relay device and the next-level device; it should be noted that the adjustment information when adjusting the gain of the uplink signal received at the current moment by the communication interface is obtained from the previous gain adjustment process.

[0070] It should be understood that if the relay device is a hub device, the aforementioned communication interface can be the interface between the hub device and the corresponding DP device, and the current uplink signal of the aforementioned communication interface can be the signal sent by the corresponding DP device to the hub device. If the relay device is an AU device, the aforementioned communication interface can be the interface between the AU device and the corresponding hub device, and the current uplink signal of the aforementioned communication interface can be the signal sent by the corresponding hub device to the AU device.

[0071] Step S402: Determine the AGC gain corresponding to the next-level device based on the uplink power of the current uplink signal and the preset threshold.

[0072] In this step, for the next-level device of the relay device, the relay device can determine the AGC gain (or target AGC gain) of the next-level device by using an open-loop AGC method or a closed-loop AGC method based on the uplink power of the current uplink signal of the next-level device (i.e., the uplink power corresponding to the current uplink signal of the communication interface between the relay device and the next-level device) and a preset threshold obtained in step S401, so as to facilitate subsequent gain adjustment of the target uplink signal of the next-level device.

[0073] It should be noted that the preset threshold values ​​involved in the embodiments of this application can be pre-configured or dynamically configured.

[0074] For example, the automatic gain control (AGC) gain corresponding to the next-level device in the embodiments of this application can be used to indicate the AGC gain adjustment amount corresponding to the next-level device, or it can be used to indicate the adjusted AGC gain size corresponding to the next-level device.

[0075] In one possible implementation, if the relay device uses an open-loop AGC method to determine the AGC gain corresponding to the next-level device, then the current uplink signal of the next-level device in this embodiment is the uplink signal received at the current moment by the communication interface between the relay device and the next-level device. Correspondingly, the target signal of the next-level device is the current uplink signal of the next-level device.

[0076] In another possible implementation, if the relay device uses a closed-loop AGC method to determine the AGC gain corresponding to the next-level device, then the current uplink signal of the next-level device in this embodiment is the uplink signal obtained after adjusting the gain of the uplink signal received at the current moment by the communication interface between the relay device and the next-level device. Correspondingly, the target signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device.

[0077] The following embodiments of this application will describe the open-loop and closed-loop AGC implementation methods for "determining the AGC gain corresponding to the uplink signal of the next-level device based on the uplink power of the uplink signal and a preset threshold value".

[0078] In one possible implementation, if the target signal of the next-level device is the current uplink signal of the next-level device, the relay device can compare the uplink power of the current uplink signal of the next-level device with a preset threshold, and determine the AGC gain corresponding to the next-level device based on the comparison result.

[0079] In this implementation, the relay device can compare the uplink power of the current uplink signal of the next-level device (i.e., the uplink power corresponding to the current uplink signal of the communication interface between the relay device and the next-level device) with various threshold values ​​included in the preset threshold threshold. The current uplink signal of the communication interface can be the uplink signal currently received by the communication interface. Furthermore, the relay device can determine the AGC gain corresponding to the next-level device based on the threshold range in which the uplink power of the current uplink signal of the next-level device falls.

[0080] Figure 5 This is a schematic diagram of an open-loop AGC provided in an embodiment of this application, as shown below. Figure 5 As shown, the relay device obtains the uplink power of the current uplink signal of the communication interface between the relay device and any next-level device by detecting the uplink power of the current uplink signal of the communication interface; furthermore, the relay device can obtain the AGC gain corresponding to the next-level device by comparing the uplink power of the current signal of the communication interface with a preset threshold, so as to facilitate gain adjustment.

[0081] For ease of understanding, the following embodiments of this application use a preset threshold, including a first threshold and a second threshold, as an example to introduce the relevant content of "determining the AGC gain corresponding to the uplink signal of the next-level device based on the comparison result".

[0082] 1) If the uplink power of the current uplink signal of the next-level device is greater than or equal to the first threshold, the relay device can determine the first gain corresponding to the first threshold as the AGC gain corresponding to the next-level device.

[0083] 2) If the uplink power of the current uplink signal of the next-level device is less than or equal to the second threshold, the relay device can determine the second gain corresponding to the second threshold as the AGC gain corresponding to the next-level device, wherein the first threshold is greater than the second threshold and the first gain is greater than the second gain.

[0084] 3) If the uplink power of the current uplink signal of the next-level device is greater than the second threshold and less than the first threshold, the relay device can determine the first intermediate gain between the first gain and the second gain as the AGC gain corresponding to the next-level device.

[0085] For example, the first intermediate gain may be a first preset value (e.g., 0 dB). As another example, the first intermediate gain may vary linearly with a first preset slope, wherein the first preset slope may be a slope determined based on a second threshold and a first threshold. For example, the first preset slope may be a slope determined based on the ratio of the difference between the first gain and the second gain to the difference between the first threshold and the second threshold.

[0086] Of course, the first intermediate gain can also be a gain between the first gain and the second gain that the relay device determines in other ways, and this application embodiment does not limit this.

[0087] Figure 6 This application provides an example of an open-loop AGC adjustment method. Figure 1 ,like Figure 6As shown, 1) If the uplink power P corresponding to the current uplink signal of the communication interface between the relay device and the next-level device is greater than or equal to the first threshold T1, the relay device can determine the first gain G1 corresponding to the first threshold T1 as the AGC gain corresponding to the next-level device. 2) If the uplink power P corresponding to the current uplink signal of the above communication interface is less than or equal to the second threshold T2, the relay device can determine the second gain G2 corresponding to the second threshold T2 as the AGC gain corresponding to the next-level device, where T1 is greater than T2 and G1 is greater than G2. 3) If the uplink power P corresponding to the current uplink signal of the above communication interface is greater than the second threshold T2 and less than the first threshold T1, the relay device can determine the first intermediate gain G' between the first gain G1 and the second gain G2 as the AGC gain corresponding to the next-level device.

[0088] Figure 7 This application provides an example of an open-loop AGC adjustment method. Figure 2 ,like Figure 7 As shown, 1) If the uplink power P corresponding to the current uplink signal of the communication interface between the relay device and the next-level device is greater than or equal to the first threshold T1, the relay device can determine the first gain G1 corresponding to the first threshold T as the AGC gain corresponding to the next-level device. 2) If the uplink power P corresponding to the current uplink signal of the above communication interface is less than or equal to the second threshold T2, the relay device can determine the second gain G2 corresponding to the second threshold T2 as the AGC gain corresponding to the next-level device, where T1 is greater than T2 and G1 is greater than G2. 3) If the uplink power P corresponding to the current uplink signal of the above communication interface is greater than the second threshold T2 and less than the first threshold T1, the relay device can determine the first intermediate gain G' according to the first gain G1 and the second gain G2 using the following formula (1).

[0089] G'=G2+(P-T2)*(G1-G2) / (T1-T2) Formula (1)

[0090] Of course, the relay device can also determine the first intermediate gain G' by other variations or equivalent formulas of the above formula (1) based on the first gain G1 and the second gain G2. This is not limited in the embodiments of this application.

[0091] It should be understood that for the determination of preset threshold values ​​including two or more threshold values, the above-described method for determining AGC gain can be referred to, and will not be repeated in this embodiment.

[0092] In another possible implementation, if the target signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device, the relay device can obtain the power difference between the uplink power of the current uplink signal of the next-level device and the reference threshold, and determine the AGC gain corresponding to the next-level device based on the power difference and the preset threshold.

[0093] In this implementation, the relay device can obtain the power difference between the uplink power of the current uplink signal of the next-level device and a reference threshold. The current uplink signal of the next-level device can be the uplink signal received at the current moment through the communication interface between the relay device and the next-level device, after gain adjustment. The reference threshold can be a threshold determined by the relay device based on a preset threshold. For example, the reference threshold can be any one of the preset thresholds, or it can be the average of the preset thresholds.

[0094] Furthermore, the relay device can determine the AGC gain corresponding to the next-level device by comparing the power difference with a preset threshold value and determining the threshold value range in which the power difference falls.

[0095] Figure 8 This is a schematic diagram of a closed-loop AGC provided in an embodiment of this application, as shown below. Figure 8 As shown, the relay device obtains the uplink power of the current uplink signal of the communication interface between the relay device and any next-level device by performing uplink power detection on the current uplink signal. The current uplink signal of the communication interface can be the uplink signal obtained after gain adjustment of the uplink signal received at the current moment. Further, the relay device can obtain the power difference ΔP between the uplink power of the current uplink signal of the communication interface and a reference threshold. Further, the relay device can compare the power difference ΔP with a preset threshold to obtain the AGC gain (or target AGC gain) corresponding to the next-level device, facilitating gain adjustment.

[0096] For ease of understanding, the following embodiments of this application use preset threshold values ​​including the third threshold value and the fourth threshold value as examples to introduce the relevant content of "determining the AGC gain corresponding to the next level device based on the power difference and the preset threshold value".

[0097] 1) If the power difference ΔP between the uplink power of the current uplink signal of the next-level device and the reference threshold is greater than or equal to the third threshold, the relay device can determine the third gain corresponding to the third threshold as the AGC gain corresponding to the next-level device.

[0098] 2) If the power difference ΔP is less than or equal to the fourth threshold, the relay device can determine the fourth gain corresponding to the fourth threshold as the AGC gain corresponding to the next level device, wherein the third threshold is greater than the fourth threshold and the third gain is greater than the fourth gain.

[0099] 3) If the power difference ΔP is greater than the fourth threshold and less than the third threshold, the relay device can determine the second intermediate gain between the third gain and the fourth gain as the AGC gain corresponding to the next level device.

[0100] For example, the second intermediate gain can be a second preset value (e.g., 0 dB). As another example, the second intermediate gain can vary linearly with a second preset slope, wherein the second preset slope can be a slope determined based on a fourth threshold and a third threshold. For example, the second preset slope can be a slope determined based on the ratio of the difference between the third gain and the fourth gain to the difference between the third threshold and the fourth threshold.

[0101] Of course, the second intermediate gain can also be a gain between the third gain and the fourth gain that the relay device determines in other ways, but this application does not limit this.

[0102] It should be understood that for the adjustment method of closed-loop AGC, when the power difference ΔP is less than 0, the AGC gain can be quickly adjusted to the fourth gain due to the feedback process; when the power difference ΔP is greater than 0, the AGC gain can be quickly adjusted to the third gain due to the feedback process.

[0103] Figure 9 This application provides an example of a closed-loop AGC adjustment method. Figure 1 ,like Figure 9 As shown, 1) If the power difference ΔP between the uplink power of the current uplink signal of the next-level device and the reference threshold is greater than or equal to the third threshold T3, the relay device can determine the third gain G3 corresponding to the third threshold T3 as the AGC gain corresponding to the next-level device. 2) If the power difference ΔP is less than or equal to the fourth threshold T4, the relay device can determine the fourth gain G4 corresponding to the fourth threshold T4 as the AGC gain corresponding to the next-level device, where T3 is greater than T4 and G3 is greater than G4. 3) If the power difference ΔP is greater than the fourth threshold T4 and less than the third threshold T3, the relay device can determine the second intermediate gain G” between the third gain G3 and the fourth gain G4 as the AGC gain corresponding to the next-level device.

[0104] Figure 10 This application provides an example of a closed-loop AGC adjustment method. Figure 2 ,like Figure 10 As shown, 1) If the power difference ΔP between the uplink power of the current uplink signal of the next-level device and the reference threshold is greater than or equal to the third threshold T3, the relay device can determine the third gain G3 corresponding to the third threshold T3 as the AGC gain corresponding to the next-level device. 2) If the power difference ΔP is less than or equal to the fourth threshold T4, the relay device can determine the fourth gain G4 corresponding to the fourth threshold T4 as the AGC gain corresponding to the next-level device, where T3 is greater than T4 and G3 is greater than G4. 3) If the power difference ΔP is greater than the fourth threshold T4 and less than the third threshold T3, the relay device can determine the second intermediate gain G according to the third gain G3 and the fourth gain G4 using the following formula (2).

[0105] G”=G4+(ΔP-T4)*(G3-G4) / (T3-T4) Formula (2)

[0106] Of course, the relay device can also determine the second intermediate gain G based on the third gain G3 and the fourth gain G4 through other variations or equivalent formulas of the above formula (2). This application embodiment does not limit this.

[0107] It should be understood that for the determination of preset threshold values ​​including two or more threshold values, the above-described method for determining AGC gain can be referred to, and will not be repeated in this embodiment.

[0108] Step S403: Adjust the gain of the target uplink signal of the next-level device according to the AGC gain.

[0109] In this step, for the next-level device of the relay device, the relay device can adjust the gain of the target uplink signal of the next-level device according to the AGC gain of the next-level device determined in step S402, so as to obtain the adjusted uplink signal of the next-level device.

[0110] In one possible implementation, if the AGC gain corresponding to the next-level device is used to indicate the AGC gain adjustment amount corresponding to the next-level device, the relay device can adjust the gain of the target uplink signal of the next-level device by adding the AGC gain (which can be positive, zero, or negative) to the initial gain (or default gain) of the target uplink signal of the next-level device, so as to obtain the adjusted uplink signal corresponding to the next-level device.

[0111] In another possible implementation, if the AGC gain corresponding to the next-level device is used to indicate the adjusted AGC gain of the next-level device, the relay device can adjust the gain of the target uplink signal of the next-level device by replacing the initial gain of the target uplink signal of the next-level device with the AGC gain, so as to obtain the adjusted uplink signal corresponding to the next-level device.

[0112] For example, if the AGC gain corresponding to the next-level device is determined by the relay device using an open-loop AGC method, then the target uplink signal of the next-level device can be the current uplink signal of the next-level device.

[0113] As another example, if the AGC gain corresponding to the next-level device is determined by the relay device using a closed-loop AGC method, then the target uplink signal of the next-level device can be the next uplink signal of the current uplink signal of the next-level device.

[0114] For ease of understanding, the following embodiments of this application describe the signal processing procedures of conventional hub devices and hub devices provided in the embodiments of this application.

[0115] Figure 11 A schematic diagram of the signal processing process of a traditional hub device. Figure 1 ,like Figure 11 As shown, the traditional technology uses Hub device 1 (or simply Hub_1) as an example. Assume that the uplink signal UE1_h1d1 corresponding to DP device 1 (or simply DP_1) contains a large amount of uplink service data, and the required SNR to reach the corresponding target uplink rate is 17dB; the uplink signals UEx_h1dx ​​corresponding to the other 7 DP devices x (or simply DP_x) contain almost no uplink service data, and the required SNR to reach the corresponding target uplink rate is 5dB, where x can be an integer from 2 to 8. Furthermore, assume that due to the environment, the SNR of uplink signals UE1_h1d1, ..., UE8_h1d8 after inputting to their respective DP devices is 24dB. Further, the uplink combining module of the Hub device combines the uplink signals corresponding to each DP device onto carrier C1. When the uplink signals corresponding to 8 DP devices are combined, the uplink noise can increase by 9dB.

[0116] like Figure 11As shown, after the uplink signal UE1_h1d1 passes through the uplink combiner module of the Hub, its SNR becomes 15dB. This indicates that the uplink signal UE1_h1d1 cannot achieve the SNR required for the target uplink rate; therefore, the uplink rate cannot be further increased. After the uplink signal UEx_h1dx ​​passes through the uplink combiner module of the Hub, its SNR also becomes 15dB. This shows that the uplink signal UEx_h1dx ​​can achieve the SNR required for the target uplink rate; therefore, the target uplink rate can be achieved.

[0117] Table 1 shows the SNR data for each uplink signal of the Hub device in traditional technology.

[0118]

[0119] It is evident that, in situations where there are both high-volume DP devices and low-volume DP devices, the uplink combining noise of traditional technologies is relatively high, resulting in a lower uplink SNR for the uplink signal of the high-volume DP device in the hub device of traditional technologies, thus failing to achieve the target uplink rate.

[0120] Figure 12 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 1 ,like Figure 12 As shown, this application embodiment uses Hub device 1 (or simply Hub_1) as an example. For the uplink signal corresponding to each DP device, Hub device 1 in this application embodiment can determine the AGC gain corresponding to each DP device through the signal processing method involved in the above embodiments of this application, so that the gain of the corresponding uplink signal can be adjusted according to the AGC gain corresponding to each DP device. It should be noted that in the following embodiments of this application, the AGC gain corresponding to any DP device is used as an example to indicate the AGC gain adjustment amount corresponding to the uplink signal of that DP device for illustration.

[0121] Figure 13 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 2 ,like Figure 13As shown in the illustration, this application takes Hub device 1 (or simply Hub_1) as an example. Assume that the uplink signal UE1_h1d1 corresponding to DP device 1 (or simply DP_1) contains a large amount of uplink service data, and the required SNR to reach the corresponding target uplink rate is 17dB; the uplink signals UEx_h1dx ​​corresponding to the other 7 DP devices x (or simply DP_x) contain almost no uplink service data, and the required SNR to reach the corresponding target uplink rate is 5dB; assume that due to the environment, the SNR of uplink signals UE1_h1d1, ..., UE8_h1d8 after inputting to the corresponding DP device is 24dB.

[0122] Furthermore, the AGC module of Hub device 1 can determine the AGC gain corresponding to each DP device according to the signal processing method involved in the above embodiments of this application, so as to adjust the gain of the corresponding uplink signal according to the AGC gain of each DP device. The AGC gain corresponding to the uplink signal UE1_h1d1 of DP device 1 is 0dB, and the AGC gain corresponding to the uplink signal UEx_h1dx ​​of other DP devices is -6dB.

[0123] Furthermore, the uplink combining module of Hub device 1 combines the uplink signals corresponding to each DP device to carrier C1. When the uplink signals corresponding to 8 DP devices are combined, the uplink noise can be increased by 4.4dB.

[0124] The calculation process for the 4.4 dB increase in combined noise is described in the following embodiments of this application.

[0125] Assuming the uplink noise of the uplink signal corresponding to each DP device is P_noise and the uplink signal is P_signal, the noise after AGC of the Hub device can be expressed as follows:

[0126] Uplink noise of uplink signal UE1_h1d1: P_noise-0dB=P_noise_h1d1=P_noise;

[0127] Uplink noise of uplink signal UE2_h1d2: P_noise-6dB=P_noise_h1d2=P_noise*0.251;

[0128] Uplink noise of uplink signal UE3_h1d3: P_noise-6dB=P_noise_h1d3=P_noise*0.251;

[0129] Uplink noise of uplink signal UE4_h1d4: P_noise-6dB=P_noise_h1d4=P_noise*0.251;

[0130] Uplink noise of uplink signal UE5_h1d5: P_noise-6dB=P_noise_h1d5=P_noise*0.251;

[0131] Uplink noise of uplink signal UE6_h1d6: P_noise-6dB=P_noise_h1d6=P_noise*0.251;

[0132] Uplink noise of uplink signal UE7_h1d7: P_noise-6dB=P_noise_h1d7=P_noise*0.251;

[0133] Uplink noise of uplink signal UE8_h1d8: P_noise-6dB=P_noise_h1d8=P_noise*0.251.

[0134] Furthermore, the noise after uplink combining through the Hub device can be expressed as:

[0135]

[0136] like Figure 13 As shown, after the uplink signal UE1_h1d1 passes through the uplink combining module of the Hub, the SNR of the uplink signal UE1_h1d1 becomes 19.6dB. It can be seen that, compared to conventional technology, the SNR of the uplink signal UE1_h1d1 in this embodiment is improved by 4.6dB, which can achieve the SNR required for the target uplink rate. Therefore, the target uplink rate can be achieved. After the uplink signal UEx_h1dx ​​passes through the uplink combining module of the Hub, the SNR of the uplink signal UEx_h1dx ​​becomes 13.6dB, which can achieve the SNR required for the target uplink rate. Therefore, the target uplink rate can be achieved.

[0137] Table 2 shows the SNR-related data for each uplink signal of the Hub device provided in the embodiments of this application.

[0138]

[0139] As can be seen, by adjusting the gain of the corresponding uplink signal according to the AGC gain of each DP device determined by the signal processing method involved in the above embodiments of this application, the Hub device can reduce uplink combining noise, thereby improving the SNR of the uplink signal corresponding to the target DP device with large uplink traffic data, which is beneficial to improving the uplink rate of the target DP device. Since the uplink combining noise has little impact on the uplink signal corresponding to other DP devices with smaller uplink traffic data, the embodiments of this application can improve the overall uplink rate of the entire cell in the coverage area.

[0140] For ease of understanding, the following embodiments of this application describe the signal processing procedures of conventional AU devices and the AU devices provided in the embodiments of this application.

[0141] Figure 14 A schematic diagram of the signal processing process of a conventional AU device. Figure 1 ,like Figure 14 As shown, assume that the uplink signal UE1_h1d1 corresponding to DP device 1 in the uplink signal UE1_h1 of Hub device 1 (or simply Hub_1) contains a large amount of uplink service data, and the SNR required to reach the corresponding target uplink rate is 17dB; the uplink signals UEy_hy corresponding to the other 3 Hub devices contain almost no uplink service data, and the SNR required to reach the corresponding target uplink rate is 5dB, where y can be an integer from 2 to 4. Additionally, assume that due to the environment, the SNR of uplink signal UE1_h1d1 after inputting to DP device 1 is 24dB, and the SNR of uplink signal UEy_hy after inputting to its corresponding DP device is also 24dB.

[0142] Furthermore, when the uplink signals corresponding to the 8 DP devices are combined by the uplink combining module of the Hub device, the uplink noise can be increased by 9dB, so that the SNR of uplink signal UE1_h1d1 becomes 15dB after passing through the Hub uplink combining module, and the SNR of uplink signal UEy_hy becomes 15dB after passing through the corresponding Hub uplink combining module.

[0143] Furthermore, the uplink combining module of the AU device combines the uplink signals corresponding to each Hub device onto carrier AC1. When the uplink signals corresponding to four Hub devices are combined, the uplink noise can increase by 6dB. For example... Figure 14 As shown, after the uplink signal UE1_h1d1 passes through the uplink combining modules of the Hub and AU devices, its SNR becomes 9dB. This indicates that the uplink signal UE1_h1d1 cannot achieve the SNR required for the target uplink rate, therefore, the uplink rate cannot be further increased. After the uplink signal UEy_hy passes through the uplink combining modules of the Hub and AU devices, its SNR also becomes 9dB. This shows that the uplink signal UEy_hy can achieve the SNR required for the target uplink rate, therefore, the target uplink rate can be achieved.

[0144] Table 3 shows the SNR-related data for each uplink signal of the AU device in the traditional technology.

[0145]

[0146] It is evident that, in situations where there are both hub devices with high traffic volume and hub devices with low traffic volume, the uplink combining noise of traditional technology is relatively high, resulting in a lower uplink SNR for the uplink signal of the AU device in traditional technology corresponding to the hub device with high traffic volume, thus failing to achieve the target uplink rate.

[0147] Figure 15 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 1 ,like Figure 15 As shown, for the uplink signals corresponding to each Hub device, the AU device in this application embodiment can determine the AGC gain corresponding to each Hub device through the signal processing method involved in the above embodiments of this application, so that the gain of the corresponding uplink signal can be adjusted according to the AGC gain corresponding to each Hub device. It should be noted that in the following embodiments of this application, the AGC gain corresponding to any Hub device is used as an example to indicate the AGC gain adjustment amount corresponding to the uplink signal of that Hub device for illustration.

[0148] Figure 16 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 2 , Figure 17 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 1 ,like Figure 16 and Figure 17As shown, the AGC module of the AU device can determine the AGC gain corresponding to each Hub device according to the signal processing method involved in the above embodiments of this application, so that the gain of the corresponding uplink signal can be adjusted according to the AGC gain of each Hub device. Among them, the AGC gain corresponding to the uplink signal UE1_h1 of Hub device 1 is 0dB, and the AGC gain corresponding to the uplink signal UEy_hy of other Hub devices is -6dB. For example, assume that the uplink signal UE1_h1 can be the uplink signal UE1_h1d1 corresponding to the next-level DP device 1 of Hub device 1 (of course, the uplink signal UE1_h1 can also be the uplink signal corresponding to other next-level DP devices of Hub device 1), which contains a large amount of uplink service data, and the SNR required to achieve the corresponding target uplink rate is 17dB. The uplink signals corresponding to other next-level DP devices of Hub device 1 contain almost no uplink service data, and the SNR required to achieve the corresponding target uplink rate is 5dB. The uplink signal UEy_hy can be any uplink signal in the uplink signal UEz_hydz, and the uplink signal UEz_hydz contains almost no uplink service data, and the SNR required to achieve the corresponding target uplink rate is 5dB. z can be an integer from 1 to 8. In addition, assume that due to the environment, the SNR of the uplink signals corresponding to each next-level DP device of each Hub device after input to the corresponding DP device is 24dB.

[0149] Furthermore, the uplink combining module of the AU device combines the adjusted uplink signals corresponding to each Hub device to carrier AC1. When the adjusted uplink signals corresponding to the four Hub devices are combined, the uplink noise can be increased by 2.5dB.

[0150] like Figure 16 and Figure 17 As shown, after the uplink signal UE1_h1 passes through the uplink combining module of Hub device 1 and the uplink combining module of AU device, the SNR of uplink signal UE1_h1 becomes 17.1dB. It can be seen that, compared with conventional technology, the SNR of uplink signal UE1_h1 in this embodiment is improved by 8.1dB, which can reach the SNR required for the target uplink rate. Therefore, the target uplink rate can be achieved. After the uplink signal UEy_hy passes through the uplink combining module of the corresponding Hub device and the uplink combining module of AU device, the SNR of uplink signal UEy_hy becomes 5.1dB, which can reach the SNR required for the target uplink rate. Therefore, the target uplink rate can be achieved.

[0151] Table 4 shows the SNR-related data for each uplink signal of the AU device provided in the embodiments of this application.

[0152]

[0153] As can be seen, by adjusting the gain of the corresponding uplink signal of each Hub device according to the AGC gain determined by the signal processing method involved in the above embodiments of this application, the AU device can reduce uplink combining noise, thereby improving the SNR of the uplink signal of the target Hub device with large uplink traffic data, which is beneficial to improving the uplink rate of the target Hub device. Since the uplink combining noise has little impact on the uplink signal of other Hub devices with smaller uplink traffic data, the embodiments of this application can improve the overall uplink rate of the entire cell in the coverage area.

[0154] It should be noted that, Figure 16 and Figure 17 In the processing shown, the Hub device also performs gain adjustment. Of course, the Hub device can also adopt the signal processing method of the traditional Hub device. By adjusting the gain through the AU device, the SNR of the corresponding uplink signal of the Hub device can be improved, thereby increasing the uplink speed of the Hub device.

[0155] In summary, in this embodiment, for any next-level device, the AGC gain corresponding to that next-level device is determined based on a preset threshold and the uplink power of the current uplink signal of that next-level device. The gain of the target uplink signal of that next-level device is then adjusted according to this AGC gain. Compared to traditional technologies, this embodiment determines the AGC gain of any next-level device based on its current uplink signal power and a preset threshold to achieve automatic gain control. This not only helps reduce uplink combining noise and improve the SNR and dynamic range of the uplink signal at the communication interface, thereby increasing the uplink rate of the entire cell in the coverage area, but also eliminates the need for traffic volume judgment and the soft handover process required by the AU device. Therefore, the signal processing method in this embodiment is more efficient and concise.

[0156] In one embodiment, based on the above embodiments, when the carrier corresponding to the relay device includes at least two carriers, the relay device can also determine, based on the AGC gain of at least one next-level device, that when the uplink signal distribution of at least one next-level device is unbalanced, generate a combining strategy so that it can perform corresponding combining processing according to the combining strategy, thereby further improving the SNR of the uplink signal.

[0157] Based on the above embodiments, this application describes the relevant content of "generating a combining strategy when the uplink signal distribution of at least one next-level device is unbalanced according to the AGC gain corresponding to at least one next-level device".

[0158] It should be understood that if the relay device is a hub device, the AGC gain corresponding to any next-level device (e.g., a DP device) of the relay device can include the AGC gain corresponding to the uplink signal of that next-level device. If the relay device is an AU device, the AGC gain corresponding to any next-level device (e.g., a hub device) of the relay device can include the AGC gains corresponding to at least one next-level sub-device (e.g., a DP device) of that next-level device, wherein the AGC gain corresponding to any next-level sub-device is the AGC gain corresponding to the uplink signal of that next-level sub-device.

[0159] In this embodiment, the relay device can generate a combining strategy when the uplink signal distribution of at least one downlink device is unbalanced (i.e., the service volume distribution of the communication interface of at least one downlink device is unbalanced) based on the AGC gain of at least one downlink device determined in the above embodiment. The combining strategy is used to instruct the target device to combine the corresponding uplink signals according to the combining strategy, and the combining strategy is used to instruct uplink signals with the same AGC gain to be combined.

[0160] It should be understood that "same AGC gain" in the context of combining uplink signals with the same AGC gain in the embodiments of this application can mean that the AGC gains are exactly the same, or that the AGC gains are substantially the same (e.g., the difference between AGC gains is less than a preset difference, or the difference between AGC gains and a preset gain is less than a preset difference, etc.). If the AGC gains are not the same, or the difference between the AGC gains is greater than or equal to a preset difference, or the difference between the AGC gains and a preset gain is greater than or equal to a preset difference, then the AGC gains are not the same. It should be understood that if the relay device is an AU device, then the target device can be the relay device, or at least one of the next-level devices of the relay device (e.g., a hub device); if the relay device is a hub device, then the target device can be the relay device.

[0161] For example, the combining strategy in this application embodiment is used to instruct uplink signals with the same AGC gain to be combined. For instance, assuming that the uplink signals 1-3 of the target device have the same AGC gain and the uplink signals 4-8 have the same AGC gain, the combining strategy can be used to instruct the uplink signals 1-3 of the target device to be combined and the uplink signals 4-8 to be combined, so as to reduce uplink combining noise.

[0162] As another example, the combining strategy in this application embodiment can also be used to instruct uplink signals whose differences from a preset gain are less than a preset difference to be combined. For example, assuming the preset gains include: preset gain 1 and preset gain 2, the differences between the AGC gain of uplink signal 1 of the target device and preset gain 1, the differences between the AGC gain of uplink signal 3 of the target device and preset gain 1, and the differences between the AGC gain of uplink signal 5 of the target device and preset gain 1 are all less than the preset difference; the differences between the AGC gain of uplink signal 2 of the target device and preset gain 2, the differences between the AGC gain of uplink signal 4 of the target device and preset gain 2, and the differences between the AGC gains of uplink signals 6-8 of the target device and preset gain 2 are all less than the preset difference; then the combining strategy can be used to instruct uplink signals 1, 3, and 5 of the target device to be combined, as well as uplink signals 2, 4, and 6-8 of the target device to be combined, so as to reduce uplink combining noise.

[0163] Of course, the merging strategy in this application embodiment can also be used to indicate other merging methods, and this application embodiment does not limit this.

[0164] In this embodiment, when the uplink signal distribution of at least one next-level device is determined to be unbalanced based on the AGC gain corresponding to at least one next-level device, a combining strategy is generated to instruct the target device to combine the corresponding uplink signals according to the combining strategy. This can further reduce uplink combining noise and improve the uplink SNR of the communication interface with a large traffic volume when the traffic volume distribution of the communication interface is unbalanced, thereby further improving the uplink rate of the entire cell in the coverage area.

[0165] Based on the above embodiments, if the target device is a relay device, the relay device can also perform uplink signal combining processing on at least one downstream device according to the combining strategy generated in the above embodiments.

[0166] For example, if a combining policy is used to instruct uplink signals with the same AGC gain to be combined, the relay device can combine uplink signals with the same AGC gain from at least one downstream device according to the combining policy. For instance, assuming that uplink signals 1-3 of the target device have the same AGC gain and uplink signals 4-8 have the same AGC gain, the relay device can combine uplink signals 1-3 of the target device and uplink signals 4-8 according to the combining policy.

[0167] As another example, if the combining strategy is used to instruct that each uplink signal whose difference with a preset gain is less than a preset difference be combined, the relay device can combine each uplink signal whose difference with a preset gain is less than a preset difference from the uplink signals of at least one downstream device according to the combining strategy. For example, assuming the preset gains include: preset gain 1 and preset gain 2, the difference between the AGC gain of the target device's uplink signal 1 and preset gain 1, the difference between the AGC gain of the target device's uplink signal 3 and preset gain 1, and the difference between the AGC gain of the target device's uplink signal 5 and preset gain 1 are all less than preset differences. The difference between the AGC gain of the target device's uplink signal 2 and preset gain 2, the difference between the AGC gain of the target device's uplink signal 4 and preset gain 2, and the difference between the AGC gain of the target device's uplink signals 6-8 and preset gain 2 are all less than preset differences. Then, the relay device can combine the target device's uplink signals 1, 3, and 5, and combine the target device's uplink signals 2, 4, and 6-8 according to the combining strategy.

[0168] Based on the above embodiments, if the target device is any next-level device of the relay device, the relay device can also send the combining strategy generated in the above embodiments to the next-level device so that the next-level device can combine the corresponding uplink signals according to the combining strategy.

[0169] It should be noted that the method by which the next-level device performs combining according to the combining strategy can be referred to in the above embodiments regarding the combining of relay devices according to the combining strategy, and will not be repeated here.

[0170] In one embodiment, Figure 18 This is a flowchart illustrating a signal processing method in another embodiment of this application. Based on the above embodiments, this application describes the relevant content of "determining the unbalanced uplink signal distribution of at least one downstream device based on the AGC gain corresponding to at least one downstream device" in the above embodiments. For example... Figure 18 As shown, the method in this application embodiment may include the following steps:

[0171] Step S1801: If the AGC gain corresponding to at least one next-level device belongs to a preset gain combination, then it is determined that the uplink signal distribution of at least one next-level device is unbalanced.

[0172] In the embodiments of this application, any AGC gain combination among the preset gain combinations belongs to the gain combination corresponding to the case of uneven uplink signal distribution.

[0173] In this step, the relay device can determine whether the AGC gain corresponding to at least one next-level device belongs to a preset gain combination; furthermore, when the relay device detects that the AGC gain corresponding to at least one next-level device belongs to a preset gain combination, it can determine that the uplink signal distribution of at least one next-level device is unbalanced.

[0174] For example, suppose the preset gain combination includes: 1 AGC gain 1 and 7 AGC gains 2, the relay device is a Hub device, the AGC gain corresponding to one of the next-level DP devices of the Hub device is AGC gain 1, and the AGC gain corresponding to the other seven DP devices is AGC gain 2. AGC gain 1 and AGC gain 2 are not the same. Then the Hub device can detect that the AGC gain corresponding to each next-level device belongs to the preset gain combination, thereby determining that the uplink signal distribution is unbalanced.

[0175] For example, suppose the preset gain combination includes: 1 AGC gain 1 and 7 AGC gains 2. The relay device is an AU device. The AGC gain corresponding to the DP device of the next-level hub device of the AU device is AGC gain 1. The AGC gains corresponding to the other seven DP devices of the next-level hub device are AGC gains 2. AGC gain 1 and AGC gain 2 are not the same. Then the AU device can detect that the AGC gain corresponding to the next-level hub device belongs to the preset gain combination, thereby determining that the uplink signal distribution is unbalanced.

[0176] Step S1802: If the AGC gain corresponding to at least one next-level device does not belong to the preset gain combination, then determine whether the uplink signal is unevenly distributed based on the transmission parameters of the uplink signal of at least one next-level device and / or the number of user equipment (UE) currently connected to the cell.

[0177] The transmission parameters involved in the embodiments of this application may include, but are not limited to, at least one of the following: signal-to-noise ratio (SNR), data rate, and number of resource elements (REs).

[0178] For example, for any uplink signal from a downstream device, the relay device can obtain the transmission parameters of the uplink signal by demodulating the uplink signal. The relay device can detect the number of user equipment (UE) currently connected to the cell, or it can receive the number of user equipment (UE) currently connected to the cell from other devices. Of course, the relay device can also obtain the above transmission parameters and / or the number of user equipment (UE) currently connected to the cell through other means, which is not limited in this embodiment.

[0179] In this step, when the relay device detects that the AGC gain corresponding to at least one next-level device does not belong to the preset gain combination, it can further determine whether the uplink signal of at least one next-level device is unevenly distributed based on the transmission parameters of the uplink signal of at least one next-level device and / or the number of user equipment (UE) currently connected to the cell.

[0180] If the transmission parameters of the uplink signal of any next-level device are within the preset parameter range, and / or the number of UEs is within the preset number range, then the relay device can execute step S1803.

[0181] For example, the transmission parameters of the uplink signal of any next-level device in the embodiments of this application may fall within a preset parameter range, including but not limited to at least one of the following:

[0182] The SNR of the uplink signal of the next-level device is greater than the preset SNR threshold;

[0183] The data rate of the uplink signal of the next-level device is greater than the preset rate threshold;

[0184] The number of REs in the uplink signal of the next-level device is greater than the preset RE threshold.

[0185] For example, if the SNR of the uplink signal of any downstream device of the relay device is greater than a preset SNR threshold (e.g., 10dB), the relay device can determine that the transmission parameters of the uplink signal of that downstream device belong to the preset parameter range.

[0186] For example, if the data rate of the uplink signal of any downstream device of the relay device is greater than a preset rate threshold (e.g., 0), then the relay device can determine that the transmission parameters of the uplink signal of that downstream device belong to the preset parameter range.

[0187] For example, if the number of REs in the uplink signal of any next-level device of the relay device is greater than a preset RE threshold, the relay device can determine that the transmission parameters of the uplink signal of the next-level device are within the preset parameter range.

[0188] For example, if the uplink signal SNR of any downstream device of the relay device is greater than a preset SNR threshold and the uplink signal data rate is greater than a preset rate threshold, then the relay device can determine that the transmission parameters of the uplink signal of the downstream device are within the preset parameter range.

[0189] Step S1803: Determine that the uplink signal distribution of at least one downstream device is unbalanced.

[0190] In this embodiment, the uneven distribution of uplink signals of at least one downstream device is determined by whether the AGC gain corresponding to at least one downstream device belongs to a preset gain combination. Furthermore, when the AGC gain corresponding to the uplink signal of at least one downstream device does not belong to the preset gain combination, the uneven distribution of uplink signals of at least one downstream device can also be determined by the transmission parameters of the uplink signals of at least one downstream device and / or the number of user equipment (UEs) currently connected to the cell. Therefore, this embodiment can accurately detect uneven uplink signal distribution, enabling the generation of a combining strategy to instruct the target device to combine the corresponding uplink signals according to the combining strategy. This further reduces uplink combining noise and can further improve the uplink SNR of the communication interface with a larger traffic volume when the traffic distribution of the communication interface is uneven.

[0191] It should be understood that if the AGC gain of at least one next-level device does not belong to the preset gain combination, the transmission parameters of the uplink signals of each next-level device do not belong to the preset parameter range, and the number of UEs does not belong to the preset number range, then the relay device can determine that the uplink signal distribution of at least one next-level device is balanced, without the need to regenerate the combining strategy.

[0192] For ease of understanding, the following embodiments of this application will compare and describe the signal processing process when the AU device does not instruct the Hub device to adjust the combining combination with the signal processing process when the AU device instructs the Hub device to adjust the combining combination.

[0193] Figure 19 A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 3 ,like Figure 19 As shown in the illustration, this application takes Hub device 1 (or simply Hub_1) as an example. Assume that the uplink signal UE1_h1d1 corresponding to DP device 1 (or simply DP_1) contains a large amount of uplink service data, and the required SNR to reach the corresponding target uplink rate is 17dB; the uplink signals UEx_h1dx ​​corresponding to the other 7 DP devices x (or simply DP_x) contain almost no uplink service data, and the required SNR to reach the corresponding target uplink rate is 5dB; assume that due to the environment, the SNR of uplink signals UE1_h1d1, ..., UE8_h1d8 after inputting to the corresponding DP device is 24dB.

[0194] Furthermore, Hub device 1 determines the AGC gain corresponding to each DP device according to the signal processing method involved in the above embodiments of this application, so that the gain of the corresponding uplink signal can be adjusted according to the AGC gain of each DP device. The AGC gain corresponding to the uplink signal UE1_h1d1 of DP device 1 is 0dB, and the AGC gain corresponding to the uplink signal UEx_h1dx ​​of other DP devices is -6dB.

[0195] Furthermore, the uplink combining module of Hub device 1 combines the uplink signals corresponding to DP devices 1-4 onto carrier C1, and combines the uplink signals corresponding to DP devices 5-8 onto carrier C2. Specifically, combining the uplink signals corresponding to DP devices 1-4 can increase the uplink noise by 2.5 dB, while combining the uplink signals corresponding to DP devices 5-8 can increase the uplink noise by 0 dB. For the specific calculation method, please refer to the above-mentioned provisions of this application. Figure 13 The calculation method for the 4.4dB increase in combined noise in the embodiment will not be repeated here.

[0196] like Figure 19 As shown, after passing through the uplink combining module of Hub device 1, the SNR of uplink signal UE1_h1d1 becomes 21.5dB, the SNR of uplink signal UE2_h1d2-uplink signal UE4_h1d4 becomes 15.5dB, and the SNR of uplink signal UE5_h1d5-uplink signal UE8_h1d8 becomes 18dB.

[0197] Figure 20 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 2 , Figure 21 A schematic diagram of the signal processing procedures of the Hub device and AU device provided in the embodiments of this application. Figure 3 In this embodiment, Hub device 1 (or simply Hub_1) is used as an example for description. Figure 20 Hub device 1 can adjust the gain of the uplink signals corresponding to each DP device using the signal processing method described in the above embodiments of this application, and perform combining processing through the uplink combining module. Further, as... Figure 21 As shown, the AU device determines whether the uplink signal of the Hub device 1 is unevenly distributed according to the signal processing method involved in the above embodiments of this application; if it is determined that the uplink signal of the Hub device 1 is unevenly distributed, the AU device can generate a combining strategy and send a combining instruction containing the combining strategy to the Hub device 1 so that the Hub device 1 can perform corresponding combining processing according to the combining strategy.

[0198] Figure 22A schematic diagram of the signal processing procedure of the Hub device provided in the embodiments of this application. Figure 4 ,like Figure 22 As shown, relative to the above Figure 19 In the process shown, in this embodiment, the uplink combining module of Hub device 1 transmits the uplink signal corresponding to DP device 1 through carrier C1 according to the combining strategy sent by AU device, and combines the uplink signals corresponding to DP devices 2-8 to carrier C2. Specifically, the uplink signal corresponding to DP device 1 is not combined with other uplink signals; therefore, the combining noise of the uplink signal corresponding to DP device 1 increases by 0dB. When the uplink signals corresponding to DP devices 2-8 are combined, the uplink noise can increase by 2.5dB. For the specific calculation method, please refer to the above-mentioned provisions of this application. Figure 13 The calculation method for the 4.4dB increase in combined noise in the embodiment will not be repeated here.

[0199] like Figure 22 As shown, after the uplink combining module of Hub device 1 adjusts the combining combination according to the combining strategy, the SNR of the uplink signal UE1_h1d1 corresponding to DP device 1 becomes 24dB, and the SNR of the uplink signal UE2_h1d2 corresponding to DP device 2 - the uplink signal UE8_h1d8 corresponding to DP device 8 becomes 15.5dB.

[0200] As can be seen, compared with the signal processing method when the AU device does not instruct the Hub device to adjust the combiner combination, the embodiment of this application can further reduce the uplink combiner noise of the uplink signal corresponding to the target DP device with large uplink service data by instructing the Hub device to adjust the combiner combination. This can further improve the SNR of the uplink signal corresponding to the target DP device, which is conducive to further improving the uplink rate of the target DP device.

[0201] For ease of understanding, the following embodiments of this application compare and introduce the signal processing method when the AU device has not adjusted the combining combination with the signal processing method when the AU device has adjusted the combining combination.

[0202] Figure 23 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 3 ,like Figure 23As shown, the AU device determines the AGC gain corresponding to each Hub device according to the signal processing method involved in the above embodiments of this application, so that the gain of the corresponding uplink signal can be adjusted according to the AGC gain of each Hub device. Specifically, the target gain adjustment amount for the uplink signal UE1_h1 of Hub device 1 is 0dB, and the target gain adjustment amount for the uplink signal UEy_hy of other Hub devices is -6dB. For example, assuming that the uplink signal UE1_h1 contains a large amount of uplink service data, the required SNR to reach the corresponding target uplink rate is 17dB, and the uplink signal UEy_hy contains almost no uplink service data, the required SNR to reach the corresponding target uplink rate is 5dB. Furthermore, assuming that due to the environment, the SNR of the uplink signal corresponding to each downstream DP device of each Hub device after input to the corresponding DP device is 24dB.

[0203] Furthermore, the uplink combining module of the AU device combines the uplink signals corresponding to Hub Device 1 and Hub Device 2 onto carrier AC1, and combines the uplink signals corresponding to Hub Device 3 and Hub Device 4 onto carrier AC2. Specifically, combining the uplink signals corresponding to Hub Device 1 and Hub Device 2 can increase the uplink noise by 1 dB, and combining the uplink signals corresponding to Hub Device 3 and Hub Device 4 can increase the uplink noise by -3 dB. For specific calculation methods, please refer to the above-mentioned provisions of this application. Figure 13 The calculation method for the 4.4dB increase in combined noise in the embodiment will not be repeated here.

[0204] like Figure 23 As shown, after passing through the uplink combining module of the AU device, the SNR of the uplink signal UE1_h1 corresponding to Hub device 1 becomes 18.6dB, the SNR of the uplink signal UE2_h2 corresponding to Hub device 2 becomes 6.6dB, and the SNR of the uplink signal UE3_h3 corresponding to Hub device 3 and the uplink signal UE4_h4 corresponding to Hub device 4 becomes 10.6dB.

[0205] Figure 24 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 4 , Figure 25 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 5 ,like Figure 24The AU device can adjust the gain of the uplink signals corresponding to each Hub device using the signal processing method described in the above embodiments of this application, and perform merging processing through the uplink combining module. Furthermore, the OAM module in the AU device can determine whether the uplink signals are unevenly distributed according to the signal processing method described in the above embodiments of this application; if it is determined that the uplink signals are unevenly distributed, the OAM module can generate a combining strategy and perform corresponding combining processing according to the combining strategy.

[0206] Figure 26 A schematic diagram of the signal processing procedure of the AU device provided in the embodiments of this application. Figure 6 ,like Figure 26 As shown, relative to the above Figure 23 As shown in the process described in this embodiment, the AU device transmits the uplink signal corresponding to Hub device 1 via carrier AC1 according to the generated combining strategy, and combines the uplink signals corresponding to Hub devices 2-4 onto carrier AC2. Specifically, the uplink signal corresponding to Hub device 1 is not combined with other uplink signals; therefore, the combining noise of the uplink signal corresponding to Hub device 1 increases by 0 dB. When the uplink signals corresponding to Hub devices 2-4 are combined, the uplink noise can increase by -1.2 dB. For specific calculation methods, please refer to the above description of this application. Figure 13 The calculation method for the 4.4dB increase in combined noise in the embodiment will not be repeated here.

[0207] like Figure 26 As shown, after passing through the uplink combining module of the AU device, the SNR of the uplink signal UE1_h1 corresponding to Hub device 1 becomes 18.6dB, and the SNR of the uplink signal UE2_h2 corresponding to Hub device 2 and the uplink signal corresponding to Hub device 4 becomes 8.8dB.

[0208] As can be seen, compared with the signal processing method when the AU device does not adjust the combiner combination, the embodiment of this application can further reduce the uplink combiner noise of the uplink signal corresponding to the target Hub device with large uplink service data by adjusting the combiner combination of the AU device, thereby further improving the SNR of the uplink signal corresponding to the target Hub device, which is conducive to further improving the uplink rate of the target Hub device.

[0209] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0210] Based on the same inventive concept, this application also provides a signal processing apparatus for implementing the signal processing method described above. The solution provided by this apparatus is similar to the implementation scheme described in the above method; therefore, the specific limitations in one or more signal processing apparatus embodiments provided below can be found in the limitations of the signal processing method in the above embodiments, and will not be repeated here.

[0211] In one embodiment, Figure 27 This is a schematic diagram of the signal processing device in one embodiment of this application, as shown below. Figure 27 As shown, the signal processing device provided in this application embodiment can be applied to the relay equipment in an indoor distributed antenna system. The indoor distributed antenna system includes: the relay equipment and at least one next-level device of the relay equipment. The signal processing device may include: an acquisition module 2701, a determination module 2702 and an adjustment module 2703.

[0212] The acquisition module 2701 is used to acquire the uplink power of the current uplink signal of any next-level device.

[0213] The determination module 2702 is used to determine the automatic gain control (AGC) gain corresponding to the next-level device based on the uplink power of the current uplink signal and the preset threshold.

[0214] The adjustment module 2703 is used to adjust the gain of the target uplink signal of the next-level device according to the AGC gain.

[0215] In one embodiment, the target signal of the next-level device is the current uplink signal of the next-level device, or the next uplink signal of the current uplink signal of the next-level device.

[0216] In one embodiment, if the target signal of the next-level device is the current uplink signal of the next-level device, the determining module 2702 includes:

[0217] The comparison unit is used to compare the uplink power of the current uplink signal with a preset threshold.

[0218] The first determining unit is used to determine the AGC gain corresponding to the next level device based on the comparison results.

[0219] In one embodiment, the preset threshold includes a first threshold and a second threshold, and the first determining unit is specifically used for:

[0220] If the uplink power is greater than or equal to the first threshold, then the first gain corresponding to the first threshold is determined as the AGC gain corresponding to the next level device; or,

[0221] If the uplink power is less than or equal to the second threshold, then the second gain corresponding to the second threshold is determined as the AGC gain for the next-level device, wherein the first threshold is greater than the second threshold, and the first gain is greater than the second gain; or...

[0222] If the uplink power is greater than the second threshold and less than the first threshold, then the first intermediate gain between the first gain and the second gain is determined as the AGC gain corresponding to the next level device.

[0223] In one embodiment, the first intermediate gain is a first preset value, or the first intermediate gain changes linearly with a first preset slope, where the first preset slope is a slope determined based on a second threshold and a first threshold.

[0224] In one embodiment, if the target signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device, the determining module 2702 includes:

[0225] The acquisition unit is used to acquire the power difference between the uplink power of the current uplink signal and a reference threshold; the reference threshold is a threshold determined according to a preset threshold.

[0226] The second determining unit is used to determine the AGC gain corresponding to the next level device based on the power difference and the preset threshold value.

[0227] In one embodiment, the preset threshold values ​​include: a third threshold value and a fourth threshold value, and the second determining unit is specifically used for:

[0228] If the power difference is greater than or equal to the third threshold, then the third gain corresponding to the third threshold is determined as the AGC gain for the next level device; or,

[0229] If the power difference is less than or equal to the fourth threshold, then the fourth gain corresponding to the fourth threshold is determined as the AGC gain for the next level device, wherein the third threshold is greater than the fourth threshold, and the third gain is greater than the fourth gain; or...

[0230] If the power difference is greater than the fourth threshold and less than the third threshold, then the second intermediate gain between the third gain and the fourth gain is determined as the AGC gain corresponding to the next level device.

[0231] In one embodiment, the second intermediate gain is a second preset value, or the second intermediate gain changes linearly with a second preset slope, which is a slope determined based on a fourth threshold and a third threshold.

[0232] In one embodiment, the signal processing apparatus further includes:

[0233] The generation module is used to generate a combining strategy when the uplink signal distribution of at least one downlink device is unbalanced, based on the AGC gain of at least one downlink device. The combining strategy is used to instruct the target device to combine the corresponding uplink signals according to the combining strategy, and the combining strategy is used to instruct uplink signals with the same AGC gain to be combined.

[0234] In one embodiment, the generation module includes:

[0235] The third determining unit is used to determine that the uplink signal distribution of at least one next-level device is unbalanced if the AGC gain corresponding to at least one next-level device belongs to a preset gain combination.

[0236] In one embodiment, the generation module further includes:

[0237] The judgment unit is used to determine whether the uplink signal of at least one lower-level device is unevenly distributed if the AGC gain corresponding to at least one lower-level device does not belong to the preset gain combination, based on the transmission parameters of the uplink signal of at least one lower-level device and / or the number of user equipment UEs currently connected to the cell.

[0238] The fourth determining unit is used to determine that the uplink signal distribution of at least one next-level device is unbalanced if the transmission parameters of the uplink signal of any next-level device are within a preset parameter range and / or the number of UEs is within a preset number range.

[0239] In one embodiment, the transmission parameters include at least one of the following: signal-to-noise ratio (SNR), data rate, and number of resource units (REs);

[0240] Correspondingly, the transmission parameters of the uplink signal of the next-level device that fall within the preset parameter range include at least one of the following:

[0241] The SNR of the uplink signal of the next-level device is greater than the preset SNR threshold;

[0242] The data rate of the uplink signal from the next-level device is greater than the preset rate threshold.

[0243] The number of REs in the uplink signal of the next-level device is greater than the preset RE threshold.

[0244] In one embodiment, if the target device is a relay device, the signal processing apparatus further includes:

[0245] The combining module is used to combine uplink signals from at least one downstream device according to the combining strategy.

[0246] In one embodiment, if the target device is a next-level device, the signal processing apparatus further includes:

[0247] The sending module is used to send the combining strategy to the next-level device.

[0248] The signal processing apparatus provided in this application embodiment can be used to execute the technical solutions in the above-described signal processing method embodiments of this application. Its implementation principle and technical effects are similar, and will not be repeated here.

[0249] Each module in the aforementioned signal processing device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the indoor distribution system in hardware form or independent of it, or stored in the memory of the indoor distribution system in software form, so that the processor can call and execute the operations corresponding to each module.

[0250] In one embodiment, Figure 28 This is a schematic diagram of a relay device in one embodiment of this application. The relay device in this embodiment may include, but is not limited to, an AU device or a Hub device. Figure 28 As shown, the relay device includes a processor, a memory, and a communication interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external devices. When the computer program is executed by the processor, it implements the technical solutions in the signal processing method embodiments described above. The implementation principle and technical effects are similar and will not be repeated here.

[0251] Those skilled in the art will understand that Figure 28 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the relay equipment to which the present application is applied. Specific relay equipment may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0252] In one embodiment, a relay device is also provided, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the technical solutions in the above-described signal processing method embodiments of this application. The implementation principle and technical effects are similar, and will not be repeated here.

[0253] In one embodiment, an indoor distribution system is also provided, the indoor distribution system including: a relay device and at least one downstream device of the relay device;

[0254] Among them, the relay equipment is used to obtain the uplink power of the current uplink signal of any next-level device;

[0255] The relay equipment is also used to determine the automatic gain control (AGC) gain of the next-level device based on the uplink power of the current uplink signal and the preset threshold, and to adjust the gain of the target uplink signal of the next-level device according to the AGC gain.

[0256] The relay device in the indoor distribution system provided in this application can be used to execute the relevant technical solutions in the above-described signal processing method embodiments of this application. Its implementation principle and technical effect are similar, and will not be repeated here.

[0257] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the technical solution in the above-described signal processing method embodiment of this application. Its implementation principle and technical effect are similar, and will not be repeated here.

[0258] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the technical solutions in the above-described signal processing method embodiments of this application. The implementation principle and technical effects are similar and will not be repeated here.

[0259] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The processors involved in the embodiments provided in this application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited thereto.

[0260] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0261] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A signal processing method, characterized in that, The method is applied to a relay device in an indoor distribution system, the indoor distribution system comprising: the relay device and at least one downstream device of the relay device, the relay device including a hub device and / or an AU device, the method comprising: For any of the next-level devices, obtain the uplink power of the current uplink signal of the next-level device; Based on the uplink power of the current uplink signal and the preset threshold, determine the automatic gain control (AGC) gain corresponding to the next-level device; The gain of the target uplink signal of the next-level device is adjusted according to the AGC gain. If the target uplink signal of the next-level device is the current uplink signal of the next-level device, the step of determining the automatic gain control (AGC) gain corresponding to the next-level device based on the uplink power of the current uplink signal and a preset threshold includes: comparing the uplink power of the current uplink signal with the preset threshold, and determining the AGC gain corresponding to the next-level device based on the comparison result. If the target uplink signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device, determining the automatic gain control (AGC) gain corresponding to the next-level device based on the uplink power of the uplink signal and a preset threshold includes: obtaining the power difference between the uplink power of the current uplink signal and a reference threshold; the reference threshold is a threshold determined based on the preset threshold; and determining the AGC gain corresponding to the next-level device based on the power difference and the preset threshold.

2. The signal processing method according to claim 1, characterized in that, The preset threshold values ​​include a first threshold value and a second threshold value. Determining the AGC gain corresponding to the next-level device based on the comparison result includes: If the uplink power is greater than or equal to the first threshold, then the first gain corresponding to the first threshold is determined as the AGC gain corresponding to the next-level device; or, If the uplink power is less than or equal to the second threshold, then the second gain corresponding to the second threshold is determined as the AGC gain corresponding to the next-level device, wherein the first threshold is greater than the second threshold, and the first gain is greater than the second gain; or... If the uplink power is greater than the second threshold and less than the first threshold, then the first intermediate gain between the first gain and the second gain is determined as the AGC gain corresponding to the next-level device.

3. The signal processing method according to claim 2, characterized in that, The first intermediate gain is a first preset value, or the first intermediate gain changes linearly with a first preset slope, where the first preset slope is a slope determined based on the second threshold and the first threshold.

4. The signal processing method according to claim 1, characterized in that, The preset threshold values ​​include: a third threshold value and a fourth threshold value. Determining the AGC gain corresponding to the next-level device based on the power difference and the preset threshold values ​​includes: If the power difference is greater than or equal to the third threshold, then the third gain corresponding to the third threshold is determined as the AGC gain corresponding to the next-level device; or, If the power difference is less than or equal to the fourth threshold, then the fourth gain corresponding to the fourth threshold is determined as the AGC gain corresponding to the next-level device, wherein the third threshold is greater than the fourth threshold, and the third gain is greater than the fourth gain; or... If the power difference is greater than the fourth threshold and less than the third threshold, then the second intermediate gain between the third gain and the fourth gain is determined as the AGC gain corresponding to the next-level device.

5. The signal processing method according to claim 4, characterized in that, The second intermediate gain is a second preset value, or the second intermediate gain changes linearly with a second preset slope, where the second preset slope is a slope determined based on the fourth threshold and the third threshold.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Based on the AGC gain corresponding to at least one of the next-level devices, when it is determined that the uplink signal distribution of the at least one next-level device is unbalanced, a combining strategy is generated; wherein, the combining strategy is used to instruct the target device to combine the corresponding uplink signals according to the combining strategy, and the combining strategy is used to instruct uplink signals with the same AGC gain to be combined.

7. The method according to claim 6, characterized in that, The step of determining the uplink signal distribution imbalance of the at least one next-level device based on the AGC gain corresponding to the at least one next-level device includes: If the AGC gain corresponding to the at least one next-level device belongs to a preset gain combination, then it is determined that the uplink signal distribution of the at least one next-level device is unbalanced.

8. The method according to claim 7, characterized in that, The method further includes: If the AGC gain corresponding to the at least one next-level device does not belong to the preset gain combination, then based on the transmission parameters of the uplink signal of the at least one next-level device and / or the number of user equipment (UE) currently connected to the cell, it is determined whether the uplink signal of the at least one next-level device is unevenly distributed. If the transmission parameters of the uplink signal of any of the next-level devices are within a preset parameter range, and / or the number of UEs is within a preset quantity range, then it is determined that the uplink signal distribution of the at least one next-level device is unbalanced.

9. The method according to claim 8, characterized in that, The transmission parameters include at least one of the following: signal-to-noise ratio (SNR), data rate, and number of resource units (REs); Correspondingly, the transmission parameters of the uplink signal of the next-level device that fall within the preset parameter range include at least one of the following: The SNR of the uplink signal of the next-level device is greater than the preset SNR threshold; The data rate of the uplink signal of the next-level device is greater than a preset rate threshold; The number of REs in the uplink signal of the next-level device is greater than the preset RE threshold.

10. The method according to claim 6, characterized in that, If the target device is the relay device, the method further includes: The uplink signals of at least one next-level device are combined according to the combining strategy.

11. The method according to claim 6, characterized in that, If the target device is the next-level device, the method further includes: The combining strategy is sent to the next-level device.

12. A signal processing apparatus, characterized in that, The device is applied to a relay device in an indoor distribution system, the indoor distribution system comprising: the relay device and at least one downstream device of the relay device, the relay device including a hub device and / or an AU device, and the device comprising: The acquisition module is used to acquire the uplink power of the current uplink signal of any next-level device. The determination module is used to determine the automatic gain control (AGC) gain corresponding to the next-level device based on the uplink power of the current uplink signal and a preset threshold. The adjustment module is used to adjust the gain of the target uplink signal of the next-level device according to the AGC gain; If the target uplink signal of the next-level device is the current uplink signal of the next-level device, the determining module is further configured to compare the uplink power of the current uplink signal with the preset threshold, and determine the AGC gain corresponding to the next-level device based on the comparison result. If the target uplink signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device, the determining module is further configured to obtain the power difference between the uplink power of the current uplink signal and a reference threshold; the reference threshold is a threshold determined according to the preset threshold; and the AGC gain corresponding to the next-level device is determined according to the power difference and the preset threshold.

13. An indoor distribution system, characterized in that, The indoor distribution system includes: a relay device and at least one downstream device of the relay device; The relay device is used to obtain the uplink power of the current uplink signal of any next-level device; the relay device includes a hub device and / or an AU device. The relay device is also used to determine the automatic gain control (AGC) gain corresponding to the next-level device based on the uplink power of the current uplink signal and a preset threshold, and to adjust the gain of the target uplink signal of the next-level device based on the AGC gain. If the target uplink signal of the next-level device is the current uplink signal of the next-level device, the relay device is further configured to compare the uplink power of the current uplink signal with the preset threshold, and determine the AGC gain corresponding to the next-level device based on the comparison result. If the target uplink signal of the next-level device is the next uplink signal of the current uplink signal of the next-level device, the relay device is further configured to obtain the power difference between the uplink power of the current uplink signal and a reference threshold; the reference threshold is a threshold determined according to the preset threshold; and the AGC gain corresponding to the next-level device is determined according to the power difference and the preset threshold.

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

15. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the signal processing method according to any one of claims 1-11.

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