CN116633410A - Signal gain control method, device, equipment and storage medium - Google Patents
Signal gain control method, device, equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15592—Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path
Abstract
The application provides a signal gain control method, a device, equipment and a storage medium, relates to the technical field of communication, and is used for solving the problem of poor communication quality between a near-end machine and a plurality of far-end machines. The method is applied to target controlled equipment and comprises the following steps: the method comprises the steps of receiving a first communication signal from a master control device, wherein the first communication signal comprises first signal power, the first signal power is the transmission signal power of the first communication signal, the master control unit is connected with a plurality of controlled devices, and a target controlled device is any one of the plurality of controlled devices. A second signal power is determined, the second signal power being a received signal power of the first communication signal. And calculating a difference value between the second signal power and the first signal power to obtain a target power difference value, wherein the target power difference value is used for indicating the distance between the target controlled equipment and the main control equipment. And if the target power difference value is smaller than the preset power difference threshold value, adjusting the signal gain value of the target controlled equipment.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal gain control method, apparatus, device, and storage medium.
Background
In recent years, with the development of communication technology, interaction between communication devices is more frequent, and signal management requirements between communication devices are also more and more high. For example, the signal between the near-end and far-end of the repeater is gained.
At present, the repeater can be divided into a near-end machine and a far-end machine, and communication can be carried out between the near-end machine and the far-end machine. The remote machine may gain the signal to be transmitted to the near-end machine and transmit the gain signal to the near-end machine. The near-end machine may then attenuate the gain value (i.e., gain compression) for the signal to be transmitted to the far-end machine based on the strength of the signal from the far-end machine. However, in the above technical solution, when the near-end machine transmits signals to the plurality of far-end machines by broadcasting, if the near-end machine performs gain compression on signals broadcast to all the far-end machines according to the intensities of signals from part of the plurality of far-end machines, the intensities of signals received by other far-end machines in the plurality of far-end machines are weaker. Therefore, how to improve the communication quality between the near-end machine and the plurality of far-end machines is a technical problem to be solved.
Disclosure of Invention
The application provides a signal gain control method, a device, equipment and a storage medium, which are used for solving the problem of poor communication quality between a near-end machine and a plurality of far-end machines.
In order to achieve the above purpose, the application adopts the following technical scheme:
in a first aspect, the present application provides a signal gain control method, applied to a target controlled device, the method comprising: the target controlled device receives a first communication signal from the main control device, the first communication signal comprises first signal power, the first signal power is the transmission signal power of the first communication signal, the main control device is connected with the plurality of controlled devices, and the target controlled device is any one of the plurality of controlled devices. The target controlled device determines a second signal power, the second signal power being a received signal power of the first communication signal. The target controlled device calculates a difference value between the second signal power and the first signal power to obtain a target power difference value, wherein the target power difference value is used for indicating the distance between the target controlled device and the main control device. The distance between the target controlled device and the main control device is in positive correlation with the target power difference value, or the distance between the target controlled device and the main control device is in negative correlation with the target power difference value. If the target power difference value is smaller than the preset power difference threshold value, the target controlled device adjusts the signal gain value of the target controlled device, and the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device.
The technical scheme provided by the application has at least the following beneficial effects: the target controlled device may receive a first communication signal from the master device, the first communication signal including a first signal power, the first signal power being a transmit signal power of the first communication signal. Then, the target controlled device may determine the second signal power, and calculate a difference between the second signal power and the first signal power to obtain a target power difference. The second signal power is the received signal power of the first communication signal, and the target power difference value is used for indicating the distance between the target controlled device and the main control device. The target controlled device may then determine whether the target power difference is less than a preset power difference threshold. If the target controlled device determines that the target power difference value is smaller than the preset power difference threshold value, the target controlled device adjusts the signal gain value of the target controlled device, and the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device. That is, the target controlled device may determine the distance between the target controlled device and the master device according to the difference between the power of the first communication signal when the first communication signal is sent by the master device and the power of the first communication signal when the first communication signal is received by the target controlled device, and reduce the signal gain value facing the master device when the distance between the target controlled device and the master device is determined to be smaller, so as to avoid the situation that the master device has gain compression. Thus, the operability of controlling the signal gains of the master device and the slave device can be improved. And the master control device is connected with a plurality of controlled devices, and the target controlled device can be any one of the plurality of controlled devices. That is, under the condition that any one of the plurality of controlled devices is closer to the master control device, the master control device does not have the condition of gain compression, and still keeps normal signal gain, so that the controlled device far from the master control device in the plurality of controlled devices can receive the communication signal from the master control device. Thus, the communication quality between the main control equipment and the controlled equipment can be improved.
Optionally, the method further comprises: the target controlled device obtains a current signal gain value of the target controlled device. And the target controlled equipment determines a target uplink attenuation value according to the target power difference value. The target controlled device determines a target signal gain value according to the current signal gain value and the target uplink attenuation value of the target controlled device, wherein the target signal gain value is smaller than the current signal gain value of the target controlled device. The method for adjusting the signal gain value of the target controlled device by the target controlled device comprises the following steps: and the target controlled device adjusts the current signal gain value of the target controlled device to the target signal gain value.
Optionally, the method further comprises: and if the target power difference value is greater than or equal to the preset power difference threshold value, the target controlled device determines whether the second signal power is smaller than the preset power threshold value. If the second signal power is smaller than the preset power threshold, the target controlled device adjusts the signal gain value of the target controlled device to a preset signal gain value, and the preset signal gain value is larger than the current signal gain value of the target controlled device.
Optionally, the method for determining the second signal power by the target controlled device includes: and the target controlled equipment performs low-pass filtering processing on the first communication signal to obtain a second communication signal. And the target controlled equipment performs downsampling processing on the second communication signal to obtain a third communication signal. And the target controlled device determines the second signal power according to the third communication signal.
Optionally, the target controlled device stores a plurality of preset signals, and the first communication signal and the plurality of preset signals are packet interactive service PSS signals. The method for determining the second signal power by the target controlled device according to the third communication signal comprises the following steps: the target controlled device carries out correlation detection on the third communication signal and any one of a plurality of preset signals to determine a plurality of correlation values, wherein one correlation value corresponds to one preset signal, and the correlation value is used for indicating the degree of correlation between the corresponding preset signal and the third communication signal. And the target controlled equipment determines at least one target signal from a plurality of preset signals according to the plurality of correlation values and the preset correlation threshold value, wherein the correlation value corresponding to the target signal is larger than the preset correlation threshold value. The target controlled device determines a second signal power based on the at least one target signal.
In a second aspect, the present application provides a signal gain control apparatus for application to a target controlled device, the apparatus comprising: a receiving module and a processing module.
The receiving module is used for receiving a first communication signal from the main control equipment, the first communication signal comprises first signal power, the first signal power is the transmission signal power of the first communication signal, the main control equipment is connected with the plurality of controlled equipment, and the target controlled equipment is any one of the plurality of controlled equipment. And the processing module is used for determining second signal power, wherein the second signal power is the received signal power of the first communication signal. The processing module is further used for calculating a difference value between the second signal power and the first signal power to obtain a target power difference value, wherein the target power difference value is used for indicating the distance between the target controlled device and the main control device. The distance between the target controlled device and the main control device is in positive correlation with the target power difference value, or the distance between the target controlled device and the main control device is in negative correlation with the target power difference value. And the processing module is also used for adjusting the signal gain value of the target controlled equipment if the target power difference value is smaller than the preset power difference threshold value, and the adjusted signal gain value of the target controlled equipment is smaller than the current signal gain value of the target controlled equipment.
Optionally, the processing module is further configured to obtain a current signal gain value of the target controlled device. And the processing module is also used for determining a target uplink attenuation value according to the target power difference value. The processing module is further used for determining a target signal gain value according to the current signal gain value and the target uplink attenuation value of the target controlled device, wherein the target signal gain value is smaller than the current signal gain value of the target controlled device. The processing module is specifically configured to adjust a current signal gain value of the target controlled device to a target signal gain value.
Optionally, the processing module is further configured to determine whether the second signal power is less than a preset power threshold if the target power difference is greater than or equal to the preset power difference threshold. And the processing module is further used for adjusting the signal gain value of the target controlled device to a preset signal gain value if the second signal power is smaller than the preset power threshold value, wherein the preset signal gain value is larger than the current signal gain value of the target controlled device.
Optionally, the processing module is specifically configured to perform low-pass filtering processing on the first communication signal to obtain a second communication signal. And the processing module is also used for carrying out downsampling processing on the second communication signal to obtain a third communication signal. And the processing module is also used for determining the second signal power according to the third communication signal.
Optionally, the target controlled device stores a plurality of preset signals, and the first communication signal and the plurality of preset signals are packet interactive service PSS signals. The processing module is specifically configured to perform correlation detection on the third communication signal and any one of a plurality of preset signals, determine a plurality of correlation values, where one correlation value corresponds to one preset signal, and the correlation value is used to indicate a degree of correlation between the corresponding preset signal and the third communication signal. The processing module is further configured to determine at least one target signal from a plurality of preset signals according to the plurality of correlation values and the preset correlation threshold, where the correlation value corresponding to the target signal is greater than the preset correlation threshold. The processing module is further configured to determine a second signal power according to the at least one target signal.
In a third aspect, the present application provides a signal gain control apparatus comprising: a processor and a memory coupled, the memory for storing one or more programs, the one or more programs comprising computer-executable instructions, the processor executing the computer-executable instructions stored by the memory when the signal gain control apparatus is operating to implement any of the alternative described signal gain control methods of the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the signal gain control method as optionally described in any of the first aspects above.
In a fifth aspect, the present application provides a computer program product for use in a server, the computer program product comprising computer instructions which, when run on the server, implement the signal gain control method as described in any of the above alternatives of the first aspect.
In the above solutions, the technical problems and the technical effects that can be solved by the signal gain control apparatus, the device, the computer storage medium, or the computer program product may be referred to the technical problems and the technical effects that can be solved by the above first aspect, and are not described herein again.
Drawings
Fig. 1 is a schematic diagram of a communication example between a main control unit and a plurality of car units according to an embodiment of the present application;
fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a signal gain control method according to an embodiment of the present application;
Fig. 4 is a flowchart of another signal gain control method according to an embodiment of the present application;
fig. 5 is a flowchart of another signal gain control method according to an embodiment of the present application;
fig. 6 is a schematic diagram of an example of a signal gain control circuit according to an embodiment of the present application;
fig. 7 is a schematic diagram of an example of signal power statistics according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a signal gain control device according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a signal gain control apparatus according to an embodiment of the present application;
fig. 10 is a conceptual partial view of a computer program product provided by an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The character "/" herein generally indicates that the associated object is an "or" relationship. For example, A/B may be understood as A or B.
The terms "first" and "second" in the description and in the claims of the application are used for distinguishing between different objects and not for describing a particular sequential order of objects.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules but may include other steps or modules not listed or inherent to such process, method, article, or apparatus.
In addition, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "e.g." should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present concepts in a concrete fashion.
Before describing the signal gain control method provided by the embodiment of the present application in detail, the implementation environment and application field Jing Jinhang of the embodiment of the present application will be described.
First, an application scenario of the embodiment of the present application is described.
In real life, buildings typically deploy multiple elevators using fifth generation mobile communications technology (5th generation mobile communication technology,5G) indoor distribution systems. However, near-far effects may occur due to uncontrolled relative positions of the elevators.
Specifically, the 5G indoor distribution system in the prior art is generally deployed based on a repeater station, and includes 2 parts, namely a main control unit (i.e. a near-end machine) and a car unit (i.e. a far-end machine), and the main control unit and the car unit form a downlink and an uplink.
Downlink link: and the donor antenna of the main control unit receives the air signals and selects the frequency band of the corresponding operator through link filtering. If a plurality of elevators exist, a power divider is added at the front end of the retransmission antenna of the main control unit, and the filtered signals are amplified by the power divider. Wherein the power fraction of the power divider is consistent with the number of elevators. Then, the main control unit transmits the signal to the elevator shaft through the retransmission antenna, and after the donor antenna of the car unit receives the signal, the signal coverage in the elevator is realized through the retransmission antenna.
Uplink: the cover antenna of the car unit amplifies the signal of the terminal, and then sends the signal to the elevator hoistway through the donor antenna of the car, and the retransmission antenna of the main control unit receives the signal, amplifies the signal and then sends the signal to the base station through the donor antenna.
For the downlink, the base station signal is stable, so the coverage area signal strength of the elevator does not fluctuate much; however, for the uplink, if there is no gain control and the elevators are near and far, then the transmit power of the nearest car unit will cause the gain compression of the master control unit, resulting in limited coverage distance of the furthest elevator and severe cases will result in failure to talk.
For this problem, the current solution has the following two ways.
In a first mode, as shown in fig. 1, a plurality of independent uplink gain control links are added to a main control unit, and the uplink gain control links correspond to devices of each elevator.
However, the disadvantage of this approach is that the actual number of elevators at the engineering site cannot be estimated, resulting in a clear support for the maximum rf link during equipment development, otherwise the subsequent inability to expand, and the costs associated with the uplink gain control link.
In a second mode, a plurality of main control units are deployed in the 5G indoor distribution system, and one main control unit corresponds to one car unit.
However, this approach has a disadvantage in that the number of main control units increases as the number of elevators increases, which greatly increases the equipment cost and the engineering construction cost.
Therefore, how to improve the communication quality between the near-end machine and the plurality of far-end machines is a technical problem to be solved.
In order to solve the above-mentioned problems, an embodiment of the present application provides a signal gain control method, which is applied to a scenario in which a near-end machine communicates with a plurality of far-end machines in a broadcast manner. The target far-end machine can determine the distance between the target far-end machine and the near-end machine according to the difference between the power of the communication signal when the communication signal is transmitted by the near-end machine and the power of the communication signal when the communication signal is received by the target far-end machine, and reduce the signal gain value facing the near-end machine under the condition that the distance between the target far-end machine and the near-end machine is determined to be smaller, so that the situation that the near-end machine is subjected to gain compression is avoided. In this way, the operability of controlling the signal gains of the near-end machine and the far-end machine can be improved. And the near-end machine is connected with a plurality of far-end machines, and the target far-end machine can be any one of the plurality of far-end machines. That is, when any one of the plurality of remote units is closer to the near-end unit, the near-end unit does not have gain compression, and still maintains normal signal gain, so as to ensure that the remote unit far from the near-end unit can receive the communication signal from the near-end unit. Thus, the communication quality between the near-end machine and the plurality of far-end machines can be improved.
The following describes an implementation environment of an embodiment of the present application.
As shown in fig. 2, a schematic diagram of a communication system according to an embodiment of the present application may include: a master device (e.g., a near-end machine 201) and a plurality of slave devices (e.g., a far-end machine 202, a far-end machine 203, and a far-end machine 204). Wherein the near-end machine 201 may be in wireless communication with the far-end machine 202, the far-end machine 203, and the far-end machine 204, respectively.
Wherein, the near-end machine 201 can send communication signals to the far-end machine 202, the far-end machine 203 and the far-end machine 204 by broadcasting after being powered on. The remote machine 202 may receive the communication signal from the near-end machine 201 after power-up and determine the distance between the remote machine 202 and the near-end machine 201 based on the communication signal. The remote machine 202 may then adjust the signal gain value for the near-end machine 201 based on the distance between the remote machine 202 and the near-end machine 201. For example, the remote machine 202 increases the signal gain value for the near-end machine 201. As another example, the remote machine 202 reduces the signal gain value for the near-end machine 201.
Similarly, the remote machine 203 may receive the communication signal from the near-end machine 201 after power-up, and determine the distance between the remote machine 203 and the near-end machine 201 according to the communication signal. The remote machine 203 may then adjust the signal gain value for the near-end machine 201 based on the distance between the remote machine 203 and the near-end machine 201. For example, the remote machine 203 increases the signal gain value for the near-end machine 201. As another example, the remote machine 203 decreases the signal gain value for the near-end machine 201.
The remote machine 204 may receive the communication signal from the near-end machine 201 after power-up and determine the distance between the remote machine 204 and the near-end machine 201 based on the communication signal. The remote machine 204 may then adjust the signal gain value for the near-end machine 201 based on the distance between the remote machine 204 and the near-end machine 201. For example, the remote machine 204 increases the signal gain value for the near-end machine 201. As another example, the remote machine 204 decreases the signal gain value for the near-end machine 201.
It should be noted that, the near-end machine 201, the far-end machine 202, the far-end machine 203, and the far-end machine 204 each include a Frequency-shift keying (FSK) communication module, and the near-end machine 201 may wirelessly communicate with the far-end machine 202, the far-end machine 203, and the far-end machine 204 through the FSK communication module in the near-end machine 201, respectively. Similarly, the remote machine 202 may communicate wirelessly with the near-end machine 201 via an FSK communication module in the remote machine 202. The remote machine 203 may communicate wirelessly with the near-end machine 201 through an FSK communication module in the remote machine 203. The remote machine 204 may communicate wirelessly with the near-end machine 201 through an FSK communication module in the remote machine 204.
In the embodiment of the present application, the target controlled device may be any one of a plurality of controlled devices. For example, the target controlled device may be a remote machine 202. For another example, the target controlled device may be a remote machine 203. For another example, the target controlled device may be a remote machine 204.
After the application scenario and the implementation environment of the embodiment of the present application are described, the signal gain control method provided by the embodiment of the present application is described in detail below with reference to the implementation environment.
The methods in the following embodiments may be implemented in the application scenario and implementation environment described above. The following specifically describes embodiments of the present application with reference to the attached drawings.
Fig. 3 is a flow chart of a signal gain control method according to an embodiment of the present application. As shown in fig. 3, the method may include: S301-S305.
S301, the target controlled device receives a first communication signal from the master control device.
The first communication signal may include a first signal power, where the first signal power is a transmission signal power of the first communication signal, that is, the first signal power is a power of the first communication signal when the first communication signal is transmitted by the master device.
That is, the master device transmits the first communication signal at the first signal power.
In one possible implementation, the first communication signal may also include traffic information. The service information is information requested by a terminal connected with the target controlled equipment.
In the embodiment of the application, the master control device is connected with a plurality of controlled devices, and the target controlled device can be any one of the plurality of controlled devices.
S302, the target controlled device determines second signal power.
The second signal power is the received signal power of the first communication signal, that is, the second signal power is the power of the first communication signal when the first communication signal is received by the target controlled device.
That is, the second signal power is the signal power of the first communication signal after being lost in the transmission process.
For example, if the first signal power is 50, the path loss between the master device and the target controlled device is 20, and the second signal power is 30.
S303, the target controlled device calculates the difference between the second signal power and the first signal power to obtain a target power difference.
The target power difference value is used for indicating the distance between the target controlled equipment and the main control equipment.
It should be noted that, in the embodiment of the present application, the correspondence between the distance between the target controlled device and the master control device and the target power difference is not limited.
In one possible design, the distance between the target controlled device and the master device is positively correlated with the target power difference.
That is, the greater the target power difference, the greater the distance between the target controlled device and the master device; the smaller the target power difference, the smaller the distance between the target controlled device and the master device.
In another possible design, the distance between the target controlled device and the master device is inversely related to the target power difference.
That is, the larger the target power difference, the smaller the distance between the target controlled device and the master device; the smaller the target power difference, the larger the distance between the target controlled device and the master control device.
S304, the target controlled device determines whether the target power difference value is smaller than a preset power difference threshold value.
In one possible implementation, the target controlled device may store a preset power difference threshold. The target controlled device may determine, according to the stored preset power difference threshold, whether the target power difference is less than the preset power difference threshold.
In another possible implementation, the first communication signal may further include a preset power difference threshold. The target controlled device may determine, according to a preset power difference threshold in the received first communication signal, whether the target power difference is smaller than the preset power difference threshold.
In some embodiments, if the target controlled device determines that the target power difference is less than the preset power difference threshold, the target controlled device performs S305.
S305, the target controlled device adjusts the signal gain value of the target controlled device.
The adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device.
It should be noted that, in the embodiment of the present application, the signal gain value adjusted by the target controlled device is the signal gain value of the target controlled device facing the master control device.
The technical scheme provided by the embodiment at least brings the following beneficial effects: the target controlled device may receive a first communication signal from the master device, the first communication signal including a first signal power, the first signal power being a transmit signal power of the first communication signal. Then, the target controlled device may determine the second signal power, and calculate a difference between the second signal power and the first signal power to obtain a target power difference. The second signal power is the received signal power of the first communication signal, and the target power difference value is used for indicating the distance between the target controlled device and the main control device. The target controlled device may then determine whether the target power difference is less than a preset power difference threshold. If the target controlled device determines that the target power difference value is smaller than the preset power difference threshold value, the target controlled device adjusts the signal gain value of the target controlled device, and the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device. That is, the target controlled device may determine the distance between the target controlled device and the master device according to the difference between the power of the first communication signal when the first communication signal is sent by the master device and the power of the first communication signal when the first communication signal is received by the target controlled device, and reduce the signal gain value facing the master device when the distance between the target controlled device and the master device is determined to be smaller, so as to avoid the situation that the master device has gain compression. Thus, the operability of controlling the signal gains of the master device and the slave device can be improved. And the master control device is connected with a plurality of controlled devices, and the target controlled device can be any one of the plurality of controlled devices. That is, under the condition that any one of the plurality of controlled devices is closer to the master control device, the master control device does not have the condition of gain compression, and still keeps normal signal gain, so that the controlled device far from the master control device in the plurality of controlled devices can receive the communication signal from the master control device. Thus, the communication quality between the main control equipment and the controlled equipment can be improved.
In some embodiments, as shown in fig. 4, before S305, the signal gain control method may further include: S401-S403.
S401, the target controlled device acquires a current signal gain value of the target controlled device.
S402, the target controlled device determines a target uplink attenuation value according to the target power difference value.
In one possible implementation, the target controlled device stores a plurality of preset power differences and a plurality of preset uplink Attenuation (ATT) values, where a preset power difference corresponds to a preset uplink attenuation value. The target controlled device may determine, according to the target power difference, a power difference identical to the target power difference from a plurality of preset power differences, and determine, from a plurality of preset uplink attenuation values, a preset uplink attenuation value corresponding to the power difference identical to the target power difference from the plurality of preset power differences, so as to obtain a target uplink attenuation value.
S403, the target controlled device determines a target signal gain value according to the current signal gain value and the target uplink attenuation value of the target controlled device.
The target signal gain value is smaller than the current signal gain value of the target controlled device.
In one possible implementation manner, the target controlled device may calculate a difference between the current signal gain value of the target controlled device and the target upstream attenuation value to obtain the target signal gain value.
In an embodiment of the present application, S305 may include: s404.
S404, the target controlled device adjusts the current signal gain value of the target controlled device to the target signal gain value.
It can be understood that the target controlled device may determine, according to the target power difference, a target uplink attenuation value from a plurality of preset uplink attenuation values, and calculate, according to a current signal gain value of the target controlled device, a difference between the current signal gain value of the target controlled device and the target uplink attenuation value, to obtain the target signal gain value. The target controlled device may then adjust the current signal gain value of the target controlled device to the target signal gain value. Thus, the accuracy of the signal gain value of the target controlled device after adjustment can be improved.
In other embodiments, as shown in fig. 5, if the target controlled device determines that the target power difference is greater than or equal to the preset power difference threshold, after S304, the signal gain control method may further include: S501-S502.
S501, the target controlled device determines whether the second signal power is smaller than a preset power threshold.
In some embodiments, if the target controlled device determines that the second signal power is greater than or equal to the preset power threshold, the target controlled device does not adjust the current signal gain value of the target controlled device.
In other embodiments, if the target controlled device determines that the second signal power is less than the preset power threshold, the target controlled device performs S502.
S502, the target controlled device adjusts the signal gain value of the target controlled device to a preset signal gain value.
The preset signal gain value is larger than the current signal gain value of the target controlled device.
It can be appreciated that the target controlled device may determine whether the distance to the master device is greater by determining whether the second signal power is less than the preset power threshold when it is determined that the distance to the master device is not small, and increase the signal gain value facing the master device when it is determined that the distance to the master device is greater. Therefore, the main control equipment can be ensured to receive the communication signal from the target controlled equipment, and the communication quality between the main control equipment and the controlled equipment is improved.
In some embodiments, as shown in fig. 6, the target controlled device may include: a signal gain control circuit. The signal gain control circuit is formed by connecting a filter, a diode, a variable resistor, a micro control unit (microcontroller unit, MCU) and a power statistics module. The target controlled device can acquire a first communication signal from the communication signal sent by the main control device through the filter, and determine the power of a second signal through the power statistics module. Then, the target controlled device can adjust the variable resistor to a state corresponding to the target signal gain value through the MCU.
In an embodiment of the present application, the power statistics module may include: a filter and a down converter. In the process that the target controlled device determines the second signal power, the target controlled device may transmit the first communication signal to the power statistics module. Then, the target controlled device can perform low-pass filtering processing on the first communication signal through a filter in the power statistics module to obtain a second communication signal, and perform downsampling processing on the second communication signal through a frequency down converter in the power statistics module to obtain a third communication signal. And then, the target controlled device can carry out power statistics on the third communication signal through the power statistics module to determine the power of the second signal.
It can be understood that the target controlled device may perform low-pass filtering on the received first communication signal in advance according to the relationship between the positions of the plurality of subcarriers of the first communication signal on the frequency domain and the system bandwidth center, and extract the synchronization signal of the bandwidth center. In this way, the influence of other signals on the first communication signal can be reduced. And, the target controlled device may decrease the sampling rate of the second communication signal. Thus, the amount of data in the duration of the orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol where the second communication signal is located can be reduced, and the operation complexity of the subsequent statistical power is reduced.
In one possible implementation manner, the target controlled device further stores a plurality of preset signals, and the first communication signal and the plurality of preset signals are packet interactive service (packet switching service, PSS) signals, and the power statistics module further may further include: and a correlator. In the process that the target controlled device performs power statistics on the third communication signal through the power statistics module to determine the power of the second signal, the target controlled device may perform correlation detection on the third communication signal and any one of a plurality of preset signals through a correlator to determine a plurality of correlation values. One correlation value corresponds to one preset signal, and the correlation value is used for indicating the degree of correlation between the corresponding preset signal and the third communication signal. Then, the target controlled device can determine at least one target signal from a plurality of preset signals through the power statistics module according to the plurality of correlation values and the preset correlation threshold value, wherein the correlation value corresponding to the target signal is larger than the preset correlation threshold value. The target controlled device may then determine, via the power statistics module, a second signal power based on the at least one target signal.
For example, as shown in fig. 7, in the process that the target controlled device determines the power of the second signal according to at least one target signal through the power statistics module, the target controlled device may select, according to the synchronization indication signal, a time domain position where the target signal is located from the synchronization indication signal through the power statistics module, and perform power statistics.
It can be understood that, since the PSS signal is transmitted once per half frame (i.e. 5 ms), a plurality of locally stored preset PSS signals (or sequences) and the third communication signal may be detected in a correlation manner, and the found method finds the time domain position where each preset PSS signal is located, so as to implement symbol timing. And then, the target controlled device can determine at least one target signal which is larger than a preset correlation threshold value from a plurality of preset PSS signals according to the correlation value corresponding to each preset PSS signal, select the time domain position of the target signal from the synchronous indication signal, and perform power statistics to obtain the second signal power. That is, the input power of the PSS signal output after statistical filtering is a fixed value, which does not change with the change of the service data, and the power is stable. Thus, the master control device and the controlled device can detect the distance between the master control device and the controlled device in the process of transmitting service information through the PSS signal.
The foregoing description of the solution provided by the embodiments of the present application has been presented primarily in terms of a computer device. It will be appreciated that the computer device, in order to carry out the functions described above, comprises corresponding hardware structures and/or software modules that perform the respective functions. Those skilled in the art will readily appreciate that the various illustrative signal gain control method steps described in connection with the disclosed embodiments of the application may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the application also provides a signal gain control device. The signal gain control device may be a computer device, a CPU in the computer device, a processing module in the computer device for controlling signal gain, or a client in the computer device for controlling signal gain.
The embodiment of the application can divide the functional modules or functional units of the signal gain control device according to the method example, for example, each functional module or functional unit can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.
Fig. 8 is a schematic structural diagram of a signal gain control device according to an embodiment of the present application. The signal gain control apparatus 800 is applied to a target controlled device and is used to perform the signal gain control method shown in fig. 3, 4 or 5, and the signal gain control apparatus 800 may include: a receiving module 801 and a processing module 802.
The receiving module 801 is configured to receive a first communication signal from a master device, where the first communication signal includes a first signal power, and the first signal power is a transmission signal power of the first communication signal, where the master device is connected to a plurality of controlled devices, and the target controlled device is any one of the plurality of controlled devices. The processing module 802 is configured to determine a second signal power, where the second signal power is a received signal power of the first communication signal. The processing module 802 is further configured to calculate a difference between the second signal power and the first signal power, to obtain a target power difference, where the target power difference is used to indicate a distance between the target controlled device and the master device. The distance between the target controlled device and the main control device is in positive correlation with the target power difference value, or the distance between the target controlled device and the main control device is in negative correlation with the target power difference value. The processing module 802 is further configured to adjust a signal gain value of the target controlled device if the target power difference is smaller than the preset power difference threshold, where the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device.
Optionally, the processing module 802 is further configured to obtain a current signal gain value of the target controlled device. The processing module 802 is further configured to determine a target uplink attenuation value according to the target power difference value. The processing module 802 is further configured to determine a target signal gain value according to the current signal gain value and the target upstream attenuation value of the target controlled device, where the target signal gain value is smaller than the current signal gain value of the target controlled device. The processing module 802 is specifically configured to adjust a current signal gain value of the target controlled device to a target signal gain value.
Optionally, the processing module 802 is further configured to determine whether the second signal power is less than a preset power threshold if the target power difference is greater than or equal to the preset power difference threshold. The processing module 802 is further configured to adjust the signal gain value of the target controlled device to a preset signal gain value if the second signal power is less than the preset power threshold, where the preset signal gain value is greater than the current signal gain value of the target controlled device.
Optionally, the processing module 802 is specifically configured to perform low-pass filtering processing on the first communication signal to obtain a second communication signal. The processing module 802 is further configured to perform downsampling processing on the second communication signal to obtain a third communication signal. The processing module 802 is further configured to determine the second signal power according to the third communication signal.
Optionally, the target controlled device stores a plurality of preset signals, and the first communication signal and the plurality of preset signals are packet interactive service PSS signals. The processing module 802 is specifically configured to perform correlation detection on the third communication signal and any one of the plurality of preset signals, determine a plurality of correlation values, where one correlation value corresponds to one preset signal, and the correlation value is used to indicate a degree of correlation between the corresponding preset signal and the third communication signal. The processing module 802 is further configured to determine at least one target signal from a plurality of preset signals according to the plurality of correlation values and the preset correlation threshold, where the correlation value corresponding to the target signal is greater than the preset correlation threshold. The processing module 802 is further configured to determine a second signal power according to the at least one target signal.
Fig. 9 is a schematic diagram showing a hardware configuration of a signal gain control apparatus according to an exemplary embodiment. The signal gain control apparatus may comprise a processor 902, the processor 902 being configured to execute application code to implement the signal gain control method of the present application.
The processor 902 may be a central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.
As shown in fig. 9, the signal gain control apparatus may further include a memory 903. The memory 903 is used for storing application program codes for executing the scheme of the present application, and the processor 902 controls the execution.
The memory 903 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc (compact disc read-only memory) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 903 may be separate and coupled to the processor 902 through a bus 904. Memory 903 may also be integrated as processor 902.
As shown in fig. 9, the signal gain control device may further comprise a communication interface 901, wherein the communication interface 901, the processor 902, and the memory 903 may be coupled to each other, for example, by a bus 904. The communication interface 901 is used for information interaction with other devices, for example, to support information interaction of the signal gain control device with other devices.
It should be noted that the device structure shown in fig. 9 does not constitute a limitation of the signal gain control device, and the signal gain control device may include more or less components than those shown in fig. 9, or may combine some components, or may be arranged with different components.
In actual implementation, the functions implemented by the processing module 802 may be implemented by the processor 902 shown in fig. 9 invoking program code in the memory 903.
The present application also provides a computer readable storage medium having instructions stored thereon which, when executed by a processor of a computer device, enable the computer to perform the signal gain control provided by the above-described illustrated embodiments. For example, the computer readable storage medium may be a memory 903 comprising instructions executable by the processor 902 of the computer device to perform the above-described method. Alternatively, the computer readable storage medium may be a non-transitory computer readable storage medium, for example, a ROM, RAM, CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
FIG. 10 schematically illustrates a conceptual partial view of a computer program product provided by an embodiment of the application, the computer program product comprising a computer program for executing a computer process on a computing device.
In one embodiment, a computer program product is provided using signal bearing medium 1000. Signal bearing medium 1000 may include one or more program instructions that when executed by one or more processors may provide the functionality or portions of the functionality described above with respect to fig. 3, 4, or 5. Thus, for example, referring to the embodiment shown in FIG. 3, one or more features of S301-S305 may be carried by one or more instructions associated with signal bearing medium 1000. Further, the program instructions in fig. 10 also describe example instructions.
In some examples, signal bearing medium 1000 may comprise a computer readable medium 1001 such as, but not limited to, a hard disk drive, compact Disk (CD), digital Video Disk (DVD), digital magnetic tape, memory, read-only memory (ROM), or random access memory (random access memory, RAM), among others.
In some implementations, signal bearing medium 1000 may include a computer recordable medium 1002 such as, but not limited to, memory, read/write (R/W) CD, R/W, DVD, and the like.
In some implementations, signal bearing medium 1000 may include communication media 1003 such as, but not limited to, digital and/or analog communication media (e.g., fiber optic cable, waveguide, wired communications link, wireless communications link, etc.).
Signal bearing medium 1000 may be conveyed by communication medium 1003 in a wireless form. The one or more program instructions may be, for example, computer-executable instructions or logic-implemented instructions.
In some examples, a signal gain control apparatus such as described with respect to fig. 8 may be configured to provide various operations, functions, or actions in response to program instructions through one or more of computer readable medium 1001, computer recordable medium 1002, and/or communication medium 1003.
It will be apparent to those skilled in the art from this description that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules, so as to perform all the above-described classification or part of the functions.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and the parts displayed as units may be one physical unit or a plurality of physical units, may be in one place, or may be distributed in a plurality of different places. The purpose of the embodiment scheme can be achieved by selecting part or all of the classification part units according to actual needs.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application, or the portion contributing to the prior art or the whole classification portion or portion of the technical solution, may be embodied in the form of a software product stored in a storage medium, where the software product includes several instructions to cause a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to execute the whole classification portion or part of the steps of the method of the embodiments of the present application. The storage medium includes a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc. which can store the program codes.
The present application is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (12)
1. A signal gain control method for a target controlled device, the method comprising:
Receiving a first communication signal from a master control device, wherein the first communication signal comprises first signal power, the first signal power is the transmission signal power of the first communication signal, the master control device is connected with a plurality of controlled devices, and the target controlled device is any one of the plurality of controlled devices;
determining a second signal power, the second signal power being a received signal power of the first communication signal;
calculating a difference value between the second signal power and the first signal power to obtain a target power difference value, wherein the target power difference value is used for indicating the distance between the target controlled device and the main control device; the distance between the target controlled device and the main control device is in positive correlation with the target power difference value, or the distance between the target controlled device and the main control device is in negative correlation with the target power difference value;
and if the target power difference value is smaller than a preset power difference threshold value, adjusting the signal gain value of the target controlled device, wherein the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device.
2. The method of claim 1, wherein prior to said adjusting the signal gain value of the target controlled device, the method further comprises:
acquiring a current signal gain value of the target controlled device;
determining a target uplink attenuation value according to the target power difference value;
determining a target signal gain value according to the current signal gain value of the target controlled device and the target uplink attenuation value, wherein the target signal gain value is smaller than the current signal gain value of the target controlled device;
the adjusting the signal gain value of the target controlled device includes:
and adjusting the current signal gain value of the target controlled device to the target signal gain value.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
if the target power difference value is greater than or equal to the preset power difference threshold value, determining whether the second signal power is smaller than a preset power threshold value;
and if the second signal power is smaller than the preset power threshold, adjusting the signal gain value of the target controlled device to a preset signal gain value, wherein the preset signal gain value is larger than the current signal gain value of the target controlled device.
4. The method according to claim 1 or 2, wherein said determining the second signal power comprises:
performing low-pass filtering processing on the first communication signal to obtain a second communication signal;
performing downsampling processing on the second communication signal to obtain a third communication signal;
and determining the second signal power according to the third communication signal.
5. The method of claim 4, wherein the target controlled device stores a plurality of preset signals, and wherein the first communication signal and the plurality of preset signals are packet interactive service PSS signals;
the determining the second signal power according to the third communication signal includes:
performing correlation detection on the third communication signal and any one of the plurality of preset signals to determine a plurality of correlation values, wherein one correlation value corresponds to one preset signal, and the correlation value is used for indicating the degree of correlation between the corresponding preset signal and the third communication signal;
determining at least one target signal from the plurality of preset signals according to the plurality of correlation values and a preset correlation threshold, wherein the correlation value corresponding to the target signal is larger than the preset correlation threshold;
And determining the second signal power according to the at least one target signal.
6. A signal gain control apparatus for application to a target controlled device, the apparatus comprising:
the receiving module is used for receiving a first communication signal from the main control equipment, wherein the first communication signal comprises first signal power, the first signal power is the transmission signal power of the first communication signal, the main control equipment is connected with a plurality of controlled equipment, and the target controlled equipment is any one of the plurality of controlled equipment;
the processing module is used for determining second signal power, wherein the second signal power is the received signal power of the first communication signal;
the processing module is further configured to calculate a difference between the second signal power and the first signal power to obtain a target power difference, where the target power difference is used to indicate a distance between the target controlled device and the master control device; the distance between the target controlled device and the main control device is in positive correlation with the target power difference value, or the distance between the target controlled device and the main control device is in negative correlation with the target power difference value;
And the processing module is further used for adjusting the signal gain value of the target controlled device if the target power difference value is smaller than a preset power difference threshold value, and the adjusted signal gain value of the target controlled device is smaller than the current signal gain value of the target controlled device.
7. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
the processing module is further used for obtaining a current signal gain value of the target controlled device;
the processing module is further configured to determine a target uplink attenuation value according to the target power difference value;
the processing module is further configured to determine a target signal gain value according to the current signal gain value of the target controlled device and the target uplink attenuation value, where the target signal gain value is smaller than the current signal gain value of the target controlled device;
the processing module is specifically configured to adjust a current signal gain value of the target controlled device to the target signal gain value.
8. The apparatus according to claim 6 or 7, wherein,
the processing module is further configured to determine whether the second signal power is less than a preset power threshold if the target power difference is greater than or equal to the preset power difference threshold;
And the processing module is further configured to adjust a signal gain value of the target controlled device to a preset signal gain value if the second signal power is less than the preset power threshold, where the preset signal gain value is greater than a current signal gain value of the target controlled device.
9. The apparatus according to claim 6 or 7, wherein,
the processing module is specifically configured to perform low-pass filtering processing on the first communication signal to obtain a second communication signal;
the processing module is further used for performing downsampling processing on the second communication signal to obtain a third communication signal;
the processing module is further configured to determine the second signal power according to the third communication signal.
10. The apparatus of claim 9, wherein the target controlled device stores a plurality of preset signals, and wherein the first communication signal and the plurality of preset signals are packet interactive service PSS signals;
the processing module is specifically configured to perform correlation detection on the third communication signal and any one of the plurality of preset signals, determine a plurality of correlation values, where one correlation value corresponds to one preset signal, and indicate a degree of correlation between the corresponding preset signal and the third communication signal;
The processing module is further configured to determine at least one target signal from the plurality of preset signals according to the plurality of correlation values and a preset correlation threshold, where the correlation value corresponding to the target signal is greater than the preset correlation threshold;
the processing module is further configured to determine the second signal power according to the at least one target signal.
11. A signal gain control apparatus, comprising: a processor and a memory; the processor and the memory are coupled; the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the signal gain control apparatus, cause the signal gain control apparatus to perform the signal gain control method of any of claims 1-5.
12. A computer readable storage medium having instructions stored therein, wherein when the instructions are executed by a computer, the computer performs the signal gain control method of any of claims 1-5.
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| CN116782352A (en) * | 2023-08-25 | 2023-09-19 | 深圳国人无线通信有限公司 | Energy saving method and system for elevator communication system |
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| CN116782352A (en) * | 2023-08-25 | 2023-09-19 | 深圳国人无线通信有限公司 | Energy saving method and system for elevator communication system |
| CN116782352B (en) * | 2023-08-25 | 2023-11-10 | 深圳国人无线通信有限公司 | Energy saving method and system for elevator communication system |
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