CN114650072A

CN114650072A - Signal processing method, signal processing apparatus, electronic device, and readable storage medium

Info

Publication number: CN114650072A
Application number: CN202210296166.7A
Authority: CN
Inventors: 盛雪锋; 李寒
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-06-21
Anticipated expiration: 2042-03-24
Also published as: CN114650072B

Abstract

The application discloses a signal processing method, a signal processing device, an electronic device and a readable storage medium, and belongs to the technical field of communication. The signal processing method is used for a terminal device, the terminal device can communicate with a base station, and the signal processing method specifically comprises the following steps: detecting an ambient noise signal within a first preset time period; receiving the first signal within a second preset time period; carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period.

Description

Signal processing method, signal processing device, electronic apparatus, and readable storage medium

Technical Field

The present application belongs to the field of communication technologies, and in particular, relates to a signal processing method, a signal processing apparatus, an electronic device, and a readable storage medium.

Background

Today, more and more new technologies are applied and new mobile network operators are developed, and along with the increasing shortage of radio frequency resources, various potential interference sources are generated continuously. Specifically, the existing dedicated radio system occupies the existing frequency resources, the network of different operators is not configured properly, the problem of setting up the transmitter itself, the cell overlapping, the environment, the electromagnetic compatibility and the intentional interference are all the reasons for the generation of the radio frequency interference of the mobile communication network.

In the communication process, the mobile terminal is affected by the various interferences, so that normal base station signals cannot be distinguished. Therefore, the mobile terminal can receive various interference signals while receiving the base station signal, so that the signal-to-noise ratio is reduced, the signal demodulation quality is influenced, the channel capacity is reduced, the information transmission rate is reduced, the communication quality is reduced, and even the mobile terminal is disconnected with the base station, so that the consequence of call drop or registration failure is caused.

Disclosure of Invention

An object of the embodiments of the present application is to provide a signal processing method, a signal processing apparatus, an electronic device, and a readable storage medium, which can solve the problems that a mobile terminal is affected by an interference signal, a signal-to-noise ratio is reduced, signal demodulation quality is affected, and channel capacity is reduced, so that an information transmission rate is reduced, and communication quality is reduced.

In a first aspect, an embodiment of the present application provides a signal processing method, where the signal processing method is used for a terminal device, and the terminal device is capable of communicating with a base station, and the method includes: detecting an ambient noise signal within a first preset time period; receiving the first signal within a second preset time period; carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period.

In a second aspect, an embodiment of the present application provides a signal processing apparatus, where the signal processing apparatus is used for a terminal device, and the terminal device is capable of communicating with a base station, the apparatus includes: the detection unit is used for detecting an environmental noise signal in a first preset time period; a receiving unit, configured to receive the first signal within a second preset time period; the processing unit is used for carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period.

In a third aspect, embodiments of the present application provide an electronic device, which includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.

In a sixth aspect, embodiments of the present application provide a computer program product, stored on a storage medium, for execution by at least one processor to implement the method according to the first aspect.

In the embodiment of the application, an environmental noise signal is detected in a first preset time period; receiving the first signal within a second preset time period; carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period. By the signal processing method, when the terminal device communicates with the base station, the terminal device detects the environmental noise signal in the communication environment in the time period (namely, the first preset time period) when the base station does not send the downlink signal, and then performs noise reduction processing on the signal (namely, the first signal) received by the terminal device according to the detected environmental noise signal in the time period (namely, the second preset time period) when the base station sends the downlink signal, so as to filter the environmental noise signal in the first signal and obtain the noise-reduced second signal. Therefore, the environmental noise signals received in the downlink signal sending period are filtered according to the environmental noise signals detected in the downlink signal sending period through the algorithm, so that the influence of the environmental noise signals on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the channel capacity is improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

Drawings

Fig. 1 is a schematic flowchart of a signal processing method according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a signal processing method according to an embodiment of the present disclosure;

FIG. 3 is a second schematic diagram of a signal processing method according to an embodiment of the present disclosure;

fig. 4 is a third schematic diagram illustrating a signal processing method according to an embodiment of the present disclosure;

FIG. 5 is a fourth schematic diagram illustrating a signal processing method according to an embodiment of the present disclosure;

FIG. 6 is a fifth schematic diagram illustrating a signal processing method according to an embodiment of the present disclosure;

fig. 7 is a block diagram of a signal processing apparatus according to an embodiment of the present disclosure;

fig. 8 is a hardware schematic diagram of an electronic device according to an embodiment of the present disclosure;

fig. 9 is a second hardware schematic diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

An execution main body of the technical scheme of the signal processing method provided in the embodiment of the present application may be a signal processing device, and may be specifically determined according to actual use requirements, which is not limited in the embodiment of the present application. In order to more clearly describe the signal processing method provided by the embodiment of the present application, the following method embodiment exemplarily illustrates an execution subject of the signal processing method as a signal processing apparatus.

The signal processing method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 1, an embodiment of the present application provides a signal processing method, which may include the following steps S102 to S106:

the signal processing method provided by the embodiment of the application is used for the terminal equipment, and the terminal equipment can communicate with the base station. Specifically, the terminal device may be an electronic device that can communicate with the base station, such as a smart phone, a smart watch, a tablet computer, and the like, and the specific form of the terminal device may be selected according to actual needs, which is not limited herein.

Step S102: an ambient noise signal is detected within a first preset time period.

And in the first preset time period, no communication signal is transmitted between the terminal equipment and the base station. That is, for the terminal device, the signal received in the first preset time period is only an ambient noise signal, which is an unknown ambient noise signal, and specifically, the ambient noise signal may be an electromagnetic interference signal, an ambient interference signal, or other interference signals that affect normal communication between the terminal device and the base station.

Further, the signal processing method provided by the embodiment of the present application is suitable for a Time Division Duplex (TDD) communication mode. In the TDD communication mode, the receiving channel and the transmitting channel are separated by time, and specifically, in the mobile communication system in the TDD mode, the receiving channel and the transmitting channel use different time slots of the same frequency carrier as bearers of the channel, and the resources in one direction are discontinuous in time, that is, the time resources are allocated in two directions. The base station sends signals to the mobile terminal in the downlink time slot, and the mobile terminal sends signals to the base station in the uplink time slot, and the base station and the mobile terminal must cooperate with each other to work smoothly. In addition, in order to protect the normal transmission of the uplink signal and the downlink signal, a blank time slot (bank time slot) exists between the uplink time slot and the downlink time slot, and no signal transmission exists between the base station and the mobile station in the blank time slot.

On this basis, the first predetermined period may be within the blank timeslot. In addition, the first preset time period may also be located in a downlink time slot, and specifically, the first preset time period may be a specific time period in the downlink time slot agreed by the base station and the terminal device, and in the specific time period, the base station does not send a downlink signal to the terminal device. The specific position of the first preset time period may be set according to practical situations, and is not particularly limited herein.

Step S104: the first signal is received within a second preset time period.

The second preset time interval is located in the downlink time slot, and in the second preset time interval, the terminal device communicates with the base station, that is, in the second preset time interval, the terminal device receives both the environmental noise signal and the downlink signal sent by the base station. That is, the first signal includes an ambient noise signal and a downlink signal transmitted by the base station.

Further, the duration of the second predetermined period may be equal to or different from the duration of the first predetermined period. In a normal communication process, the total duration of the downlink time slot is extremely short (nanosecond-microsecond level), and in the process, the change of the environmental noise signal is small, so that the environmental noise signal detected by the terminal device in the first preset time period can be used for estimating the environmental noise signal received by the terminal device in the second preset time period after the first preset time period, and further carrying out noise reduction on the first signal received in the second preset time period.

Further, the first preset period and the second preset period adjacent thereto are consecutive in time. Therefore, when the environmental noise signal received by the terminal equipment in the second preset time period is estimated through the environmental noise signal detected by the terminal equipment in the first preset time period, the environmental noise signal in the first preset time period is closer to the environmental noise signal in the second preset time period, the estimation accuracy of the environmental noise signal in the second preset time period is improved, and the accuracy of the noise reduction result of the first signal is further improved.

Step S106: and carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction.

The environmental noise signal is an environmental noise signal detected by the terminal device in a first preset time period, and the first signal is an environmental noise signal received by the terminal device in a second preset time period and a downlink signal sent by the base station. And carrying out noise reduction processing on the first signal according to the environment noise signal to reduce the environment noise signal in the first signal, thereby obtaining a second signal after noise reduction. That is to say, the second signal is the first signal after the noise reduction processing, and the intensity of the ambient noise signal in the second signal is smaller than that in the first signal.

Specifically, the environmental noise signal received by the terminal device in the second preset time period is estimated through the environmental noise signal detected by the terminal device in the first preset time period, and then the environmental noise signal in the first signal is filtered out through an integration algorithm.

Specifically, an environmental noise signal detected by the terminal device in a first preset time period is integrated, an integration result of the environmental noise signal received by the terminal device in a second preset time period is estimated according to the integration result of the environmental noise signal, a total signal received by the terminal device in the second preset time period, namely the first signal, is integrated, a difference value processing is performed on the integration result of the first signal and the estimated integration result of the environmental noise signal received in the second preset time period, the estimated integration result of the environmental noise signal received in the second preset time period is subtracted from the integration result of the first signal, and therefore the noise reduction processing of the first signal is achieved.

By the signal processing method provided by the embodiment of the application, when the terminal device communicates with the base station, the environmental noise signal in the communication environment is detected in the time period (namely, the first preset time period) when the base station does not transmit the downlink signal, and then the noise reduction processing is performed on the signal (namely, the first signal) received by the terminal device per se through the integration algorithm according to the detected environmental noise signal in the time period (namely, the second preset time period) when the base station transmits the downlink signal, so as to filter the environmental noise signal in the first signal, and obtain the second signal after the noise reduction. Therefore, the environmental noise signals received in the downlink signal sending period are filtered through an integration algorithm according to the environmental noise signals detected in the downlink signal sending period, so that the influence of the environmental noise signals on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the channel capacity is improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

In the embodiment of the present application, before the step S102, the signal processing method provided in the embodiment of the present application further includes the following steps S100 and S101:

step S100: the third signal is received within a third preset time period.

Wherein the third preset time period is before the first preset time period, and the third preset time period and the first preset time period are continuous in time. The third signal includes an ambient noise signal and a known test signal transmitted by the base station, and on the basis of this, the third preset period can be divided into a noise detection period and a signal demodulation period. In the noise detection period, the base station does not transmit the known test signal, the terminal device only receives the environmental noise signal in the communication environment, in the signal demodulation period, the base station transmits the known test signal to the terminal device, and the terminal device simultaneously receives the environmental noise signal and the known test signal and demodulates the received signal.

Step S101: and demodulating the third signal, and determining the duration of the first preset time period according to the demodulation result.

Specifically, the terminal device demodulates the third signal (the ambient noise signal and the known test signal) received in the signal demodulation period, and then determines the duration of the first preset period according to a demodulation result, that is, whether the known test signal is successfully demodulated.

That is, before performing noise reduction processing on the first signal received in the second preset period by using the environmental noise signal detected in the first preset period, first, the detection period of the environmental noise signal, that is, the first preset period is determined, so as to reasonably configure the time length value of the first preset period.

It can be understood that the time length value of the first preset time period affects the accuracy of the noise reduction processing, and the larger the time length value of the first preset time period is, the more the detected environmental noise signals are, the more the noise reduction processing is accurate. Meanwhile, when the first preset time period is located in the downlink time slot, the more downlink time slots occupied by the first preset time period, the more accurate the measurement of the environmental noise signal is, however, the less downlink time slots occupied by the time period (i.e., the second preset time period) in which the base station transmits the downlink signal is, so that the throughput of the downlink channel can be reduced. Therefore, before detecting the environmental noise signal in the first preset time period, the time length value of the first preset time period needs to be determined, and the throughput of the downlink channel is ensured while the accuracy of the noise reduction processing on the first signal is ensured.

In the above embodiment provided by the present application, before detecting the environmental noise signal in the first preset time period, the time length value of the first preset time period is determined by demodulating the third signal including the known test signal. Therefore, the time length of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

In the embodiment of the present application, the step S101 may specifically include the following steps S101a to S101 c:

step S101 a: the initial duration of the noise detection period is configured to be zero.

Specifically, the initial duration of the noise detection period is configured to be zero, and at this time, the third preset period only includes the signal demodulation period, that is, the ambient noise signal is not detected at this time. That is, in the initial demodulation period, the third signal is not subjected to noise reduction processing, the terminal device directly demodulates the received third signal, and then the duration of the first preset period is determined according to the demodulation result.

Step S101 b: the third signal received in the signal demodulation period is demodulated.

In the signal demodulation period, the base station transmits a known test signal to the terminal device, that is, the third signal includes an ambient noise signal and the known test signal transmitted by the base station. Therefore, the demodulation result can be judged by judging whether the terminal equipment successfully demodulates the known test signal, and the duration of the first preset time period is determined according to the demodulation result.

Step S101 c: under the condition that the known test signal is not successfully demodulated, adjusting the duration of a noise detection time period according to a preset increment, and continuing demodulating the third signal after carrying out noise reduction processing on the third signal; in case of successful demodulation of the known test signal, the current duration of the noise detection period is determined as the duration of the first preset period.

Specifically, the third signal includes an ambient noise signal and a known test signal sent by the base station, the third signal received by the terminal device in the signal demodulation period is demodulated, and when the known test signal cannot be successfully demodulated, the duration value of the noise detection period is adjusted according to a preset increment, so as to detect the ambient noise signal in the noise detection period, and perform noise reduction processing on the third signal received in the signal demodulation period according to the detected ambient noise signal. On the basis, the third signal after the noise reduction processing is continuously demodulated, under the condition that the known test signal cannot be successfully demodulated, the time length value of the noise detection time period is continuously adjusted according to the preset increment, the noise reduction processing and the demodulation are continuously carried out on the third signal until the known test signal is successfully demodulated, and the time length value of the current noise detection time period is determined as the time length of the first preset time period.

And under the condition that the known test signal cannot be successfully demodulated, gradually increasing the time length value of the noise detection time interval according to the preset increment to detect more environmental noise signals, so that the noise reduction processing strength of the third signal is increased, the demodulation success rate of the third signal is increased, and the known test signal is successfully demodulated.

In addition, it should be noted that, in the step S101a, the initial duration of the noise detection time period may be configured to be a nonzero value close to zero, so as to ensure that the duration of the first preset time period is not zero, that is, to ensure that the first signal received in the second preset time period can be subjected to noise reduction processing, and improve communication quality.

In the above embodiment provided by the application, before detecting the environmental noise signal in the first preset time period, the third signal including the known test signal is demodulated, and the time length value of the first preset time period is determined according to the demodulation result. Specifically, the initial duration of the noise detection period in the third preset period is configured to be zero, the duration value of the noise detection period is increased under the condition that the demodulation of the third signal fails, the noise reduction processing is performed on the third signal according to the detected environmental noise signal, and then the third signal after noise reduction is continuously demodulated. And repeating the steps in a circulating way until the third signal is successfully demodulated, namely the known test signal is successfully demodulated, and determining the current time length of the noise detection time period as the time length of the first preset time period. Therefore, the duration of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

In this embodiment of the present application, the first preset time period may be located in a blank time slot between an uplink time slot and a downlink time slot, and at this time, the second preset time period is also located in the downlink time slot.

Specifically, in the present application, the first signal received by the terminal device in the downlink time slot may be subjected to noise reduction processing by a single processing segment. At the moment, the first preset time interval is located in a blank time slot between the uplink time slot and the downlink time slot, the second preset time interval is located in the downlink time slot, and the environmental noise signal received by the terminal device in the second preset time interval is filtered through the environmental noise signal detected in the first preset time interval.

The first preset time interval is located in the blank time slot, and the downlink time slot is not occupied, so that the first signal received by the terminal equipment in the downlink time slot is subjected to noise reduction processing, the influence of an environmental noise signal on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the communication quality of the terminal equipment is improved, the length of the downlink signal transmission time interval can be ensured, the throughput of a downlink channel is ensured, and the transmission rate of the downlink signal is improved.

In addition, it should be noted that the duration ratio of the first preset time period in the blank time slot and the duration ratio of the second preset time period in the downlink time slot may be set according to actual conditions, so as to adjust the intensity of the noise reduction processing.

According to the embodiment provided by the application, the environmental noise signals in the downlink time slot are filtered through the environmental noise signals detected in the blank time slot section, the influence of the environmental noise signals on the communication of the terminal equipment is reduced, and the signal-to-noise ratio in the downlink time slot is improved, so that the length of the transmission period of the downlink signals is ensured, the throughput of the downlink signals is ensured, and the transmission rate of the downlink signals is improved while the communication quality of the terminal equipment is improved.

In this embodiment, the first preset time period may also be located in the downlink time slot, and at this time, the second preset time period is also located in the downlink time slot, the first preset time period and the second preset time period are alternately distributed, and the number of the first preset time period and the number of the second preset time period are equal.

Specifically, in the present application, the first signal received by the terminal device in the downlink time slot may be subjected to noise reduction processing through a plurality of processing segments. At this time, the first preset time period and the second preset time period are both located in the downlink time slot, specifically, the downlink time slot is averagely divided into N (N is an integer greater than 1) test segments, each test segment includes a first preset time period and a second preset time period, and in each test segment, the environmental noise signal in the second preset time period is filtered by the environmental noise signal detected in the first preset time period.

The first preset time interval and the adjacent second preset time interval are continuous in time, and the time lengths of the first preset time interval and the second preset time interval can be equal or unequal.

Further, the base station does not send the downlink signal to the terminal device within the first preset time, and the base station sends the downlink signal to the terminal device within the second preset time. That is, as shown in fig. 2, the base station performs a certain time interval T in the downlink time slot T₀Periodically sending downlink signal to terminal equipment, the time interval T₀I.e. the first predetermined period.

In the above embodiment provided by the application, the downlink time slot is averagely divided into a plurality of test segments, each test segment includes a first preset time period and a second preset time period, and in each test segment, the environmental noise signal in the second preset time period is filtered by the environmental noise signal detected in the first preset time period. Therefore, the downlink time slot is divided into a plurality of sections, and in each section of downlink time slot, the environmental noise signal received in the downlink signal sending period (namely, the second preset period) is filtered according to the environmental noise signal detected in the downlink signal sending period (namely, the first preset period), so that the influence of the environmental noise signal on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the channel capacity is improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

In the embodiment of the application, in a first preset time period, the terminal device and the base station do not communicate, and in a second preset time period, the terminal device receives a downlink signal from the base station.

The first preset time interval is a time interval for detecting the environmental signal, and no communication signal is transmitted between the terminal equipment and the base station in the first preset time interval. Therefore, for the terminal device, the signal received in the first preset time period is only the environmental noise signal, and the accuracy of detecting the environmental noise signal in the first preset time period is ensured.

Specifically, the first preset period may be located in a blank timeslot between the uplink timeslot and the downlink timeslot, and may also be located in the downlink timeslot. In the case that the first preset time period is located in the downlink time slot, the first preset time period may be a specific time period appointed by the base station and the terminal device, and in the specific time period, the base station does not send the downlink signal to the terminal device.

Further, the second preset time interval is a time interval for performing noise reduction processing, and the second preset time interval is located in the downlink time slot. In a second preset time period, the terminal device communicates with the base station, and may receive a downlink signal sent by the base station. In this way, the terminal device receives both the ambient noise signal and the downlink signal transmitted by the base station within the second preset time period.

On the basis, according to the environmental noise signal detected by the terminal device in the first preset time period, the noise reduction processing is carried out on all signals received by the terminal device in the second preset time period, the accuracy of the noise reduction processing is ensured, the demodulation success rate of the terminal device on the downlink signal is improved, and therefore the communication quality between the terminal device and the base station is improved.

The above-mentioned embodiment that this application provided, according to the environmental noise signal that no downstream signal transmission period detected, to having the received environmental noise signal of downstream signal transmission period to filter, the accuracy of environmental noise signal detection has been guaranteed, and then the accuracy of noise reduction processing has been guaranteed, the influence of environmental noise signal to terminal equipment communication has been reduced, the SNR in the downstream time slot has been promoted, thereby can improve channel capacity, improve information transmission rate, and then terminal equipment's communication quality has been promoted.

In the embodiment of the present invention, the step S106 may specifically include the following steps S106a to S106 d:

step S104 a: and integrating the environmental noise signal to obtain a first intermediate signal.

The environment noise signal is detected by the terminal device within a first preset time period, and the first intermediate signal is a first integration result obtained by integrating the environment noise signal. In the normal communication process, the total time length of the downlink time slot is extremely short (nanosecond-microsecond level), and in the process, the change of the environmental noise signal is small. Therefore, the integration result of the environmental noise signal received by the terminal device in the second preset time period can be estimated through the first integration result, that is, the integration result of the environmental noise signal received by the terminal device in the second preset time period is represented by the first integration result.

Step S104 b: and according to the first intermediate signal, performing mean value estimation on the received environmental noise signal in a second preset time period to obtain a second intermediate signal.

Specifically, after the first intermediate signal is obtained, an average estimation algorithm is used to estimate an integration result of the ambient noise signal received by the terminal device within a second preset time period, so as to obtain a second integration result, that is, a second intermediate signal.

Step S104 c: and integrating the first signal to obtain a third intermediate signal.

The first signal includes an environmental noise signal and a downlink signal sent by the base station, the third intermediate signal is a third integration result obtained by integrating the first signal, and the third integration result corresponds to the first signal.

Step S104 d: and performing difference processing on the third intermediate signal and the first intermediate signal to obtain a second signal subjected to noise reduction.

The first intermediate signal is a first integration result obtained by integrating the environmental noise signal detected in the first preset time period, and the third intermediate signal is a third integration result obtained by integrating the first signal.

It should be noted that, according to the difference between the distribution situations of the first preset time period and the second preset time period, the specific integration algorithm for the noise reduction processing of the first signal is different, and the following describes the specific integration algorithm in the embodiment of the present application in different situations:

in the first case: under the condition of single test segment, namely under the condition that a first preset time interval is located in a blank time slot, and a second preset time interval is located in a downlink time slot, at this time, if the duration value of the second preset time interval is an integral multiple of the duration value of the first preset time interval (for example, the duration value of the second preset time interval is M times of the duration value of the first preset time interval, and M is an integer greater than or equal to 1), the second preset time interval can be regarded as M test small segments, the duration of the M test small segments is equal and equal to the duration of the first preset time interval, the M test small segments are continuous in time, and the environmental noise signal in each test small segment is filtered through the environmental noise signal detected in the first preset time interval.

Under the condition, the duration of the first preset time interval is equal to that of each test segment, so that the first integration result can be directly regarded as the integration result of the environmental noise signal received by the terminal equipment in each test segment, the environmental noise signal received by the terminal equipment in each test segment is filtered through difference processing, and finally the noise reduction processing of the first signal in the second preset time interval is realized. Specifically, when each test segment is subjected to noise reduction processing, the noise reduction processing is expressed by the following integral formula:

wherein, T₀Representing a first preset period of time, T₁Denotes each test section, S₁Is a first signal, S'₂A second signal N obtained by denoising the first signal received by the terminal equipment in each test segment₀The method comprises the steps of detecting an environmental noise signal in a first preset time period for a terminal device.

That is, in this case, the noise reduction processing may be directly performed on the first signal received by the terminal device within the second preset time period through the following integral formula:

wherein, T₀Representing a first preset period of time, T₂Representing a second preset time period, S₁Is a first signal, S₂A second signal N obtained by denoising the first signal received by the terminal device in a second preset time period₀For the environmental noise signal detected by the terminal device in the first preset time period, M is a multiple of the time length value of the second preset time period compared with the time length value of the first preset time period.

Illustratively, as shown in fig. 3, a first preset time period T is taken within a blank time slot (i.e., N ═ 1)₀Taking four (i.e. M-4) test segments T in the downlink timeslot₁Forming a second predetermined period of time T₂. Wherein, the first preset time interval T₀And testing the segment T₁Are equal in duration, a first preset time period T₀And a test sub-section T adjacent thereto₁Continuous in time (for clarity here to express blank time slot and downlink time slot, first predetermined period T₀And a test sub-section T adjacent thereto₁There is a certain interval between them, in the course of practical application, this interval does not exist), four test small sections T₁Are continuous in time. In the practical application process, a first preset time interval T is detected₀The environmental noise signals are integrated to obtain a first integration result, and then the terminal equipment is tested in each small section T₁The total signal (i.e. the first signal) received in the test section is integrated to obtain four integration results, and each test section T is subjected to the above formula₁The first signal is subjected to noise reduction processing (i.e. the first integration result is subtracted from each second integration result) to obtain a second preset time period T₂And internally reducing the noise of the second signal.

In the second case: when the first preset time interval is located in the blank time slot, the second preset time interval is located in the downlink time slot, and the time length value of the second preset time interval is not an integral multiple of the time length value of the first preset time interval, the noise reduction processing can be performed on the first signal received by the terminal device in the second preset time interval according to the following integral formula:

wherein, T₀Representing a first predetermined period of time (or duration of the first predetermined period of time), T₂Indicating a second predetermined period (or duration of a second predetermined period), S₁Is a first signal, S₂A second signal obtained by denoising the first signal received by the terminal equipment in a second preset time period, N₀The method comprises the steps of detecting an environmental noise signal in a first preset time period for a terminal device.

It should be noted that, under the condition that the duration value of the second preset time period is an integral multiple of the duration value of the first preset time period, the first signal received in the second preset time period may also be subjected to noise reduction processing by the above formula.

Illustratively, as shown in fig. 4, a first preset time period T is taken within a blank time slot (i.e., N ═ 1)₀Taking a second preset time interval T in the downlink time slot T₂. Wherein, the first preset time interval T₀And a second preset time period T₂Continuous in time (for clarity here to express blank time slot and downlink time slot, first predetermined period T₀And a second preset time period T₂There is a certain interval between them, in the practical application process, the interval does not exist), the second preset time interval T₂Is a first preset time period T₀3.5 times the duration of (c). In the practical application process, a first preset time interval T is detected₀The environmental noise signal in the terminal equipment is integrated to obtain a first integration result, and then the terminal equipment is subjected to a second preset time interval T₂The received total signal (i.e. the first signal) is integrated to obtain a total integration result, and the second preset time period T is determined by the above formula₂The first signal in the second signal is subjected to noise reduction processing (i.e. 3.5 times of the first integration result is subtracted from the total integration result) to obtain a second preset time period T₂And internally reducing the noise of the second signal.

In the third case: the first preset time interval is located in the blank time slot, the second preset time interval is a downlink time slot, at the moment, the multiple relation between the total time length of the downlink time slot and the time length of the first preset time interval can be further determined, the integral estimated value of the environmental noise signal in the downlink time slot is determined according to the multiple relation and the first intermediate signal, and then the first signal received in the downlink time slot is subjected to noise reduction processing according to the integral estimated value.

Specifically, under the condition that the second preset time interval is a downlink time slot, performing noise reduction processing on a first signal received by the terminal device in the downlink time slot by using the following formula:

wherein, T₀Representing a first preset time interval, T representing a downlink time slot, S being a first signal received by the terminal equipment in a downlink time i, S' being a second signal obtained by performing noise reduction processing on the first signal received by the terminal equipment in the downlink time slot, N₀And n is the ratio of the total time length of the downlink time slot to the time length of the first preset time period.

Illustratively, as shown in fig. 5, a first preset time period T is taken within a blank time slot (i.e., N ═ 1)₀. Wherein, the first preset time interval T₀And the downlink time slot T are consecutive in time (for clarity, the blank time slot and the downlink time slot are shown here, the first predetermined period T₀And a certain interval exists between the downlink time slot T and the downlink time slot T, and the interval does not exist in the practical application process), and the total duration of the downlink time slot is 4.5 times of the duration of the first preset time period. In the practical application process, a first preset time interval T is detected₀The environmental noise signal in the downlink time slot T is integrated to obtain a first integration result, the total signal (i.e. the first signal) received by the terminal device in the downlink time slot T is integrated to obtain a total integration result, and the first signal in the downlink time slot T is subjected to noise reduction processing (i.e. the first integration result of 4.5 times is subtracted from the total integration result) by the formula to obtain the noise-reduced signal in the downlink time slot TA second signal.

In a fourth case: in the case of a plurality of test segments, i.e. in the case where the first preset period and the second preset period are alternately distributed within the downlink time slot. At this time, the downlink time slot is averagely divided into N (N is an integer greater than 1) test segments, each test segment includes a first preset time period and a second preset time period, and at this time, if the total time length of the downlink time slot is T, the time length of the first preset time period in each test segment is T₀The duration of the second predetermined period within each test segment may then be expressed as

On this basis, in each test segment, the noise reduction processing may be specifically performed on the first signal received by the terminal device in the second preset time period through the following integration formula:

where N is the number of segments into which the downlink time slot is divided (i.e., the number of test segments), T₀Representing a first preset period of time, T₂Representing a second preset time period, S₁For the first signal received by the terminal device within a second predetermined time period, S₂A second signal N obtained by denoising the first signal received by the terminal device in a second preset time period₀And the terminal equipment detects the environmental noise signal in a first preset time period.

Illustratively, as shown in fig. 6, in one downlink timeslot T, the downlink timeslot T is divided into four (i.e., N ═ 4) test segments, and in each test segment, a first preset time period T is included₀And a second predetermined period of time T₂. Wherein, the first preset time interval T₀And a second preset time period T adjacent thereto₂Are continuous in time. In each test segment, the ring in the second preset time period is subjected to the environment noise signal detected in the first preset time period by the formulaAnd filtering the ambient noise signal to obtain a second signal subjected to noise reduction.

According to the embodiment provided by the application, the environmental noise signal detected in the first preset time period is integrated to obtain the first intermediate signal, the environmental noise signal in the second preset time period is estimated according to the mean value of the first intermediate signal to obtain the second intermediate signal, the first signal received in the second preset time period is integrated to obtain the third intermediate signal, and then the third intermediate signal and the second intermediate signal are subjected to subtraction to filter the environmental noise signal in the first signal. Therefore, through an integration algorithm, the received environmental noise signal in the second preset time period is filtered according to the environmental noise signal detected in the first preset time period, the influence of the environmental noise signal on the communication of the terminal equipment is reduced, and the signal-to-noise ratio in the downlink time slot is improved, so that the channel capacity can be improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

In this embodiment of the present application, in the case that the first preset time period is located in a blank time slot, the signal processing method further includes the following step S108:

step S108: and adjusting the duration ratio of the first preset time interval in the blank time slot according to the second signal after noise reduction.

The first preset time interval is located in the blank time slot, and the duration of the first preset time interval may be set according to an actual situation, specifically, the duration of the first preset time interval may be a half of the total duration of the blank time slot, a third of the total duration of the blank time slot, a quarter of the total duration of the blank time slot, and the like, and is not limited specifically herein.

Specifically, after the first signal received in the second preset time period is subjected to noise reduction processing to obtain the second signal, the duration ratio of the first preset time period in the blank time slot may be adjusted according to the second signal, that is, the duration of the first preset time period may be increased or decreased according to the second signal subjected to noise reduction. The adjustment of the noise reduction processing strength of the first signal is realized by adjusting the duration of the first preset time period, and the energy consumption of signal processing of the terminal equipment is reduced while the noise reduction processing strength of the first signal is ensured.

In the above embodiment provided by the application, after the first signal received in the second preset time period is subjected to noise reduction processing to obtain the second signal, the duration of the first preset time period is increased or decreased according to the second signal. Therefore, the duration of the first preset time period can be timely adjusted according to the noise reduction processing result of the first signal, so that the noise reduction processing strength of the first signal can be timely adjusted, and the noise reduction performance of the terminal equipment is improved.

In addition, the signal processing method provided in this embodiment of the present application is also applicable to an FDD (Frequency Division duplex) communication mode, and in an actual application process, a user may set the first preset time period and the second preset time period according to an actual situation, so that in the FDD communication mode, a signal received by the terminal device in a downlink time slot is subjected to noise reduction processing according to the signal processing method, thereby improving a downlink signal-to-noise ratio and improving communication quality.

In the signal processing method provided by the embodiment of the application, the execution main body can be a signal processing device. In the embodiment of the present application, a method for executing the signal processing by a signal processing apparatus is taken as an example, and the signal processing apparatus provided in the embodiment of the present application is described.

As shown in fig. 7, the embodiment of the present application provides a signal processing apparatus 700, where the signal processing apparatus 700 is used for a terminal device, and the terminal device can communicate with a base station, and the apparatus may include a detection unit 702, a receiving unit 704, and a processing unit 706, which are described below.

A detecting unit 702, configured to detect an ambient noise signal within a first preset time period;

a receiving unit 704, configured to receive the first signal within a second preset time period;

the processing unit 706 is configured to perform noise reduction processing on the first signal according to the environmental noise signal to obtain a noise-reduced second signal;

wherein the first preset time period is consecutive in time with the adjacent second preset time period.

In the embodiment of the present application, the signal processing apparatus 700 detects an environmental noise signal within a first preset time period through the detection unit 702; receiving the first signal by the receiving unit 704 for a second preset time period; then, the processing unit 706 performs noise reduction processing on the first signal according to the environmental noise signal to obtain a second signal after noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period. Through the signal processing apparatus 700, when the terminal device communicates with the base station, the detection unit 702 detects the environmental noise signal in the communication environment in the time period (i.e. the first preset time period) when the base station has no downlink signal transmission, and then the receiving unit 704 receives the first signal in the time period (i.e. the second preset time period) when the base station transmits the downlink signal, and the processing unit 706 performs noise reduction processing on the first signal received by the terminal device according to the detected environmental noise signal, so as to filter the environmental noise signal in the first signal, and obtain the second signal after noise reduction. Therefore, the environmental noise signals received in the downlink signal sending period are filtered according to the environmental noise signals detected in the downlink signal sending period through the algorithm, so that the influence of the environmental noise signals on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the channel capacity is improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

Optionally, in this embodiment of the present application, the receiving unit 704 is further configured to receive a third signal within a third preset time period; the processing unit 706 is further configured to demodulate the third signal, and determine a duration of the first preset time period according to a demodulation result; the third preset time period is before the first preset time period, the third preset time period and the first preset time period are continuous in time, the third signal comprises an environmental noise signal and a known test signal sent by the base station, and the third preset time period comprises a noise detection time period and a signal demodulation time period.

In the above embodiment provided by the present application, before the detection unit 702 detects the environmental noise signal in the first preset time period, the processing unit 706 demodulates the third signal containing the known test signal to determine the time length value of the first preset time period. Therefore, the time length of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

Optionally, in this embodiment of the present application, the processing unit 706 is specifically configured to: configuring the initial duration of a noise detection time interval to be zero; demodulating a third signal received at the signal demodulation period; under the condition that the known test signal is not successfully demodulated, adjusting the duration of a noise detection time period according to a preset increment, and continuing demodulating the third signal after carrying out noise reduction processing on the third signal; and under the condition that the known test signal is successfully demodulated, determining the current duration of the noise detection period as the duration of a first preset period.

In the above embodiment provided by the present application, when the processing unit 706 demodulates the third signal including the known test signal to determine the time length value of the first preset time period, specifically, the initial time length of the noise detection time period in the third preset time period is configured to be zero, and when the demodulation of the third signal fails, the time length value of the noise detection time period is increased, the noise reduction processing is performed on the third signal according to the detected environmental noise signal, and then the third signal after noise reduction is continuously demodulated. And repeating the steps in a circulating manner until the third signal is successfully demodulated, namely the known test signal is successfully demodulated, and determining the current time length of the noise detection time period as the time length of the first preset time period. Therefore, the duration of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

Optionally, in this embodiment of the present application, the first preset period is located in a blank timeslot between an uplink timeslot and a downlink timeslot; the second preset time period is located in the downlink time slot.

Optionally, in this embodiment of the present application, the first preset time period and the second preset time period are both located in the downlink time slot; the first preset time interval and the second preset time interval are alternately distributed, and the number of the first preset time interval and the number of the second preset time interval are equal.

The above-mentioned embodiment provided by the application, the downlink time slot is divided into multiple segments, in each segment of downlink time slot, according to the environmental noise signal detected in the period without downlink signal transmission (i.e. the first preset period), the environmental noise signal received in the period with downlink signal transmission (i.e. the second preset period) is filtered, the influence of the environmental noise signal on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, thereby the channel capacity can be improved, the information transmission rate is improved, and further the communication quality of the terminal equipment is improved.

Optionally, in this embodiment of the present application, in a first preset time period, the terminal device and the base station do not communicate, and in a second preset time period, the terminal device receives a downlink signal from the base station.

Optionally, in this embodiment of the present application, the processing unit 706 is specifically configured to: performing integral processing on the environmental noise signal to obtain a first intermediate signal; according to the first intermediate signal, carrying out mean value estimation on the environment noise signal received in a second preset time period to obtain a second intermediate signal; integrating the first signal to obtain a third intermediate signal; and performing difference processing on the third intermediate signal and the second intermediate signal to obtain a second signal subjected to noise reduction.

In the above embodiment provided by the application, when the processing unit 706 performs noise reduction processing on the first signal received in the second preset time period, specifically, the environmental noise signal detected in the first preset time period is integrated to obtain a first intermediate signal, the environmental noise signal in the second preset time period is estimated according to the mean value of the first intermediate signal to obtain a second intermediate signal, the first signal received in the second preset time period is integrated to obtain a third intermediate signal, and then the third intermediate signal and the second intermediate signal are subtracted to filter the environmental noise signal in the first signal. Therefore, through an integration algorithm, the received environmental noise signal in the second preset time period is filtered according to the environmental noise signal detected in the first preset time period, the influence of the environmental noise signal on the communication of the terminal equipment is reduced, and the signal-to-noise ratio in the downlink time slot is improved, so that the channel capacity can be improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

Optionally, in this embodiment of the application, in a case that the first preset period is located in a blank time slot, the processing unit 706 may further be configured to: and adjusting the duration ratio of the first preset time interval in the blank time slot according to the second signal after noise reduction.

In the above embodiment provided by the application, when the first preset time period is located in the blank time slot, the duration ratio of the first preset time period in the blank time slot is adjusted according to the second signal after noise reduction. Therefore, the duration of the first preset time period can be timely adjusted according to the noise reduction processing result of the first signal, so that the noise reduction processing strength of the first signal can be timely adjusted, and the noise reduction performance of the terminal equipment is improved.

The signal processing apparatus in the embodiment of the present application may be an electronic device, and may also be a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be a device other than a terminal. The electronic Device may be, for example, a Mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic Device, a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a wearable Device, an ultra-Mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and may also be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The signal processing apparatus in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The signal processing apparatus provided in the embodiment of the present application can implement each process implemented in the method embodiment of fig. 1, and is not described here again to avoid repetition.

As shown in fig. 8, an electronic device 800 is further provided in this embodiment of the present application, and includes a processor 801 and a memory 802, where the memory 802 stores a program or an instruction that can be executed on the processor 801, and when the program or the instruction is executed by the processor 801, the steps of the signal processing method embodiment are implemented, and the same technical effects can be achieved, and are not described herein again to avoid repetition.

It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic device and the non-mobile electronic device described above.

Fig. 9 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 900 includes, but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.

Those skilled in the art will appreciate that the electronic device 900 may further include a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system. The electronic device structure shown in fig. 9 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is not repeated here.

The electronic device 900 of the embodiment of the present application may be configured to implement the steps of the embodiment of the signal processing method described above.

Wherein, the processor 910 is configured to: detecting an ambient noise signal within a first preset time period; receiving the first signal within a second preset time period; carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction; wherein the first preset time period is consecutive in time with the adjacent second preset time period.

In this embodiment of the application, the electronic device 900 detects an ambient noise signal in a first preset time period through the processor 910, receives the first signal in a second preset time period, and further performs noise reduction processing on the first signal according to the ambient noise signal to obtain a noise-reduced second signal, where the first preset time period and the adjacent second preset time period are consecutive in time. By the electronic device 900, the environmental noise signal in the communication environment is detected in the time period (i.e., the first preset time period) when the base station does not transmit the downlink signal, and then the noise reduction processing is performed on the signal (i.e., the first signal) received by the base station according to the detected environmental noise signal in the time period (i.e., the second preset time period) when the base station transmits the downlink signal, so as to filter the environmental noise signal in the first signal, and obtain the second signal after the noise reduction. Therefore, the environmental noise signals received in the downlink signal sending period are filtered according to the environmental noise signals detected in the downlink signal sending period through the algorithm, so that the influence of the environmental noise signals on the communication of the terminal equipment is reduced, the signal-to-noise ratio in the downlink time slot is improved, the channel capacity is improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

Optionally, the processor 910 is further configured to: receiving a third signal within a third preset time period; demodulating the third signal, and determining the duration of a first preset time period according to a demodulation result; the third preset time period is before the first preset time period, the third preset time period and the first preset time period are continuous in time, the third signal comprises an environmental noise signal and a known test signal sent by the base station, and the third preset time period comprises a noise detection time period and a signal demodulation time period.

In the above embodiments provided in this application, before detecting the environmental noise signal in the first preset time period, the processor 910 demodulates the third signal including the known test signal to determine the value of the duration of the first preset time period. Therefore, the time length of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

Optionally, the processor 910 is specifically configured to: configuring the initial duration of a noise detection time interval to be zero; demodulating a third signal received at the signal demodulation period; under the condition that the known test signal is not successfully demodulated, adjusting the duration of a noise detection period according to a preset increment, and continuing demodulating the third signal after carrying out noise reduction processing on the third signal; and under the condition that the known test signal is successfully demodulated, determining the current duration of the noise detection period as the duration of a first preset period.

In the above embodiment provided by the application, when the time length value of the first preset time period is determined in a manner of demodulating the third signal including the known test signal by the processor 910, specifically, the initial time length of the noise detection time period in the third preset time period is configured to be zero, when the demodulation of the third signal fails, the time length value of the noise detection time period is increased, the noise reduction processing is performed on the third signal according to the detected ambient noise signal, and then the third signal after the noise reduction is continuously demodulated. And repeating the steps in a circulating way until the third signal is successfully demodulated, namely the known test signal is successfully demodulated, and determining the current time length of the noise detection time period as the time length of the first preset time period. Therefore, the duration of the first preset time period is reasonably configured, and the accuracy of noise reduction processing on the first signal is ensured, so that the throughput of a downlink channel is ensured while the communication between the terminal equipment and the base station is normal, and the information transmission rate is further ensured.

Optionally, the first preset time period is located in a blank time slot between the uplink time slot and the downlink time slot; the second preset time period is located in the downlink time slot.

Optionally, the first preset time period and the second preset time period are both located in the downlink time slot; the first preset time interval and the second preset time interval are alternately distributed, and the number of the first preset time interval and the number of the second preset time interval are equal.

Optionally, in a first preset time period, the terminal device and the base station do not communicate, and in a second preset time period, the terminal device receives a downlink signal from the base station.

According to the embodiment provided by the application, according to the environmental noise signal detected in the period without downlink signal transmission, the environmental noise signal received in the period with downlink signal transmission is filtered, the accuracy of detecting the environmental noise signal is ensured, the accuracy of noise reduction processing is further ensured, the influence of the environmental noise signal on the communication of the terminal equipment is reduced, the signal-to-noise ratio in a downlink time slot is improved, the channel capacity can be improved, the information transmission rate is improved, and the communication quality of the terminal equipment is further improved.

Optionally, the processor 910 is specifically configured to: performing integral processing on the environmental noise signal to obtain a first intermediate signal; according to the first intermediate signal, carrying out mean value estimation on the environment noise signal received in a second preset time period to obtain a second intermediate signal; integrating the first signal to obtain a third intermediate signal; and performing difference processing on the third intermediate signal and the second intermediate signal to obtain a second signal subjected to noise reduction.

In the above embodiment provided by the application, when the processor 910 performs noise reduction processing on the first signal received in the second preset time period, specifically, the environmental noise signal detected in the first preset time period is integrated to obtain a first intermediate signal, the environmental noise signal in the second preset time period is estimated according to the mean value of the first intermediate signal to obtain a second intermediate signal, the first signal received in the second preset time period is integrated to obtain a third intermediate signal, and then the third intermediate signal and the second intermediate signal are subtracted to filter the environmental noise signal in the first signal. Therefore, through an integration algorithm, the received environmental noise signal in the second preset time period is filtered according to the environmental noise signal detected in the first preset time period, the influence of the environmental noise signal on the communication of the terminal equipment is reduced, and the signal-to-noise ratio in the downlink time slot is improved, so that the channel capacity can be improved, the information transmission rate is improved, and the communication quality of the terminal equipment is improved.

Optionally, in a case that the first preset time period is located in a blank time slot, the processor 910 is further configured to: and adjusting the duration ratio of the first preset time interval in the blank time slot according to the second signal after noise reduction.

In the above embodiments provided in this application, when the first preset time period is located in the blank time slot, the processor 910 adjusts a duration ratio of the first preset time period in the blank time slot according to the second signal after noise reduction. Therefore, the duration of the first preset time period can be timely adjusted according to the noise reduction processing result of the first signal, so that the noise reduction processing strength of the first signal can be timely adjusted, and the noise reduction performance of the terminal equipment is improved.

When the electronic device 900 provided in the embodiment of the present application communicates with a base station, the environmental noise signal received in the downlink signal transmission period is filtered according to the environmental noise signal detected in the downlink signal transmission period through an algorithm. Therefore, the influence of the environmental noise signal on the communication of the electronic equipment is reduced, and the signal-to-noise ratio in the downlink time slot is improved, so that the channel capacity can be improved, the information transmission rate is improved, and the communication quality of the electronic equipment is improved.

It should be understood that, in the embodiment of the present application, the input Unit 904 may include a Graphics Processing Unit (GPU) 9041 and a microphone 9042, and the Graphics Processing Unit 9041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. A touch panel 9071, also called a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a first storage area storing a program or an instruction and a second storage area storing data, wherein the first storage area may store an operating system, an application program or an instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the memory 909 may include volatile memory or nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct Memory bus RAM (DRRAM). The memory 909 in the embodiments of the subject application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor, which mainly handles operations related to the operating system, user interface, and applications, and a modem processor, which mainly handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 910.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the signal processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device in the above embodiment. Readable storage media, including computer readable storage media such as computer read only memory ROM, random access memory RAM, magnetic or optical disks, and the like.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the signal processing method embodiment, and the same technical effect can be achieved.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the foregoing signal processing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method of the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A signal processing method, wherein the signal processing method is used for a terminal device, wherein the terminal device is capable of communicating with a base station, and wherein the signal processing method comprises:

detecting an ambient noise signal within a first preset time period;

receiving the first signal within a second preset time period;

performing noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction;

wherein the first preset time period and the second preset time period are consecutive in time.

2. The signal processing method according to claim 1, wherein before detecting the ambient noise signal within the first preset period, the signal processing method further comprises:

receiving a third signal within a third preset time period;

demodulating the third signal, and determining the duration of the first preset time period according to a demodulation result;

the third preset time period is before the first preset time period, the third preset time period and the first preset time period are continuous in time, the third signal comprises an environmental noise signal and a known test signal sent by the base station, and the third preset time period comprises a noise detection time period and a signal demodulation time period.

3. The signal processing method according to claim 2, wherein the demodulating the third signal and determining the duration of the first preset time period according to the demodulation result specifically comprises:

configuring the initial duration of the noise detection period to be zero;

demodulating the third signal received in the signal demodulation period;

under the condition that the known test signal is not successfully demodulated, adjusting the duration of the noise detection time period according to a preset increment, and continuing demodulating the third signal after the third signal is subjected to the noise reduction treatment;

and under the condition that the known test signal is successfully demodulated, determining the current time length of the noise detection time period as the time length of the first preset time period.

4. The signal processing method according to claim 1,

the first preset time interval is positioned in a blank time slot between an uplink time slot and a downlink time slot;

the second preset time period is located in the downlink time slot.

5. The signal processing method according to claim 1,

the first preset time interval and the second preset time interval are both positioned in a downlink time slot;

the first preset time interval and the second preset time interval are alternately distributed, and the number of the first preset time interval and the number of the second preset time interval are equal.

6. The signal processing method according to claim 1,

and in the first preset time period, the terminal equipment and the base station do not communicate, and in the second preset time period, the terminal equipment receives a downlink signal from the base station.

7. The signal processing method according to any one of claims 1 to 6, wherein the performing noise reduction processing on the first signal according to the ambient noise signal to obtain a noise-reduced second signal specifically includes:

performing integral processing on the environmental noise signal to obtain a first intermediate signal;

according to the first intermediate signal, carrying out mean value estimation on the environment noise signal received in the second preset time period to obtain a second intermediate signal;

performing integration processing on the first signal to obtain a third intermediate signal;

and performing difference processing on the third intermediate signal and the second intermediate signal to obtain the second signal subjected to noise reduction.

8. A signal processing apparatus, wherein the signal processing apparatus is used for a terminal device, the terminal device being capable of communicating with a base station, the signal processing apparatus comprising:

the detection unit is used for detecting an environmental noise signal in a first preset time period;

a receiving unit, configured to receive the first signal within a second preset time period;

the processing unit is used for carrying out noise reduction processing on the first signal according to the environment noise signal to obtain a second signal subjected to noise reduction;

wherein the first preset time period is consecutive in time to the adjacent second preset time period.

9. An electronic device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the signal processing method according to any one of claims 1 to 7.

10. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the signal processing method according to any one of claims 1 to 7.