CN108540659B

CN108540659B - Method, terminal and computer readable storage medium for reducing TDD noise influence

Info

Publication number: CN108540659B
Application number: CN201810268949.8A
Authority: CN
Inventors: 赵梦娟
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2018-03-29
Filing date: 2018-03-29
Publication date: 2021-05-18
Anticipated expiration: 2038-03-29
Also published as: CN108540659A

Abstract

The invention discloses a method for reducing TDD noise influence, which comprises the steps of firstly finding out an antenna (i.e. a preferred antenna) which corresponds to a working audio device group formed by a currently working audio device and enables the TDD noise in the working audio device group to be weakest by utilizing the characteristics that a multi-antenna terminal has a plurality of antennas and the characteristics that the farther an audio device in the terminal is away from the working antenna, the weaker the TDD noise generated in the audio device is, and then working by taking the preferred antenna as the working antenna. The invention also discloses a terminal and a computer readable storage medium for realizing the method. The method minimizes the influence of the working antenna on the currently working audio device. Therefore, under the condition of not increasing hardware cost, the influence of TDD noise is reduced more quickly and better, the conversation quality of a user is ensured, and the user experience is improved.

Description

Method, terminal and computer readable storage medium for reducing TDD noise influence

Technical Field

The present invention relates to the field of terminal technologies, and in particular, to a method, a terminal, and a computer-readable storage medium for reducing TDD noise impact.

Background

TDD (Time Division duplex) noise generally exists in a Mobile phone of a GSM (Global System for Mobile Communication) System in the prior art, which is generated because a radio frequency power amplifier of the Mobile phone of the GSM System is turned on once every 217Hz, a large current of 1.5A is consumed for each turn-on, a large current consumption with a frequency of 217Hz generates a voltage drop of a power supply with a frequency of 217Hz, and a signal generated by the voltage drop of the power supply is a noise signal and is called as a TDD noise signal. Because the frequency of the TDD noise signal is about 217HZ and belongs to a sound frequency range that can be heard by human ears, if the TDD noise signal interferes with the audio module of the terminal, a large or small sound such as squeak and buzz is generated, which affects the user communication quality and degrades the user experience.

At present, the problem of TDD noise is solved by improving hardware, so that a circuit formed by a radio frequency power amplifier and a power supply and a circuit corresponding to an audio processing part are not crossed, when the radio frequency power amplifier works, the circuit corresponding to the audio processing part is not influenced, and the TDD noise is inhibited. However, the improvement of the method has the disadvantages of high debugging difficulty, very complex circuit and increased hardware cost.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: at present, TDD noise is solved by improving hardware, debugging difficulty is high, a circuit is very complex, and hardware cost is increased. To address the technical problem, the present invention provides a method, a terminal and a computer-readable storage medium for reducing TDD noise impact.

In order to solve the above technical problem, the present invention provides a method for reducing TDD noise impact, where the method for reducing TDD noise impact is applied to a terminal having at least two antennas, and the method for reducing TDD noise impact includes:

when the terminal is in a GSM mode, determining a current working audio device group; the working audio device group comprises at least one audio device, and the audio device is in a working state;

determining a preferred antenna corresponding to the working audio device group according to the working audio device group; the preferred antenna is the antenna that minimizes TDD noise in the set of operating audio devices;

operating the preferred antenna as an operating antenna.

Optionally, the specific manner of determining the preferred antenna corresponding to the working audio device group according to the working audio device group is any one of the following three manners:

the first method is as follows: determining an antenna corresponding to the working audio device group as a preferred antenna according to a pre-stored corresponding relation between the working audio device group and the antenna;

the second method comprises the following steps: detecting whether the corresponding relation between the working audio device group and a certain antenna is stored in the terminal; if so, determining that the antenna corresponding to the working audio device group is the preferred antenna; if not, sequentially using each antenna of the terminal as a working antenna and recording a TDD noise value generated in the working audio device group when each antenna works, determining the corresponding antenna with the weakest TDD noise in each antenna according to the recorded TDD noise value, determining the antenna with the weakest TDD noise as the preferred antenna corresponding to the working audio device group, and recording and storing the corresponding relation between the antenna with the weakest TDD noise and the working audio device group;

the third method comprises the following steps: and sequentially using each antenna of the terminal as a working antenna, recording TDD noise values generated in the working audio device group when each antenna works, determining the antenna with the weakest TDD noise corresponding to each antenna according to the recorded TDD noise values, and determining the antenna with the weakest TDD noise as the preferred antenna corresponding to the working audio device group.

Optionally, before the determining the current working audio device group, the specific mode of determining the preferred antenna corresponding to the working audio device group according to the working audio device group is one, further includes:

obtaining an antenna which is corresponding to each working audio device group and enables the TDD noise in the working audio device group to be weakest when the terminal is in a GSM mode in a laboratory environment;

and recording and storing the corresponding relation between the working audio device group and the antenna.

Optionally, the GSM mode is: GSM voice mode, and/or GSM internet mode.

Optionally, an audio device set is preset in the terminal; and the audio devices contained in the working audio device group are audio devices in the audio device set.

Optionally, the audio device in the audio device set includes at least one of an earphone and an external speaker.

Optionally, when the terminal is in the GSM mode, before the determining the current working audio device group, the method further includes:

and detecting the current TDD noise parameter of the terminal, and determining that the value of the TDD noise parameter is greater than a preset threshold value.

Optionally, the TDD noise parameter includes at least one of a TDD noise value and a signal transmission power.

Further, the invention also provides a terminal, which comprises a processor, a memory, an audio device, a communication bus and at least two antennas;

the communication bus is used for realizing connection communication among the processor, the memory, the audio device and the antenna;

the processor is configured to execute one or more programs stored in the memory to implement the steps of any of the above methods for reducing TDD noise impact.

Further, the present invention also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of any of the above methods for reducing TDD noise impact.

Advantageous effects

The invention provides a method, a terminal and a computer readable storage medium for reducing TDD noise influence, aiming at solving the problems that the TDD noise is often improved on hardware, the debugging difficulty is high, the circuit is very complex and the hardware cost is increased at present, by utilizing the characteristics of a multi-antenna terminal (such as a dual-antenna terminal, a three-antenna terminal and the like) having a plurality of antennas and the characteristics that the TDD noise generated in an audio device is weaker when an audio device in the terminal is farther away from a working antenna, when the multi-antenna terminal is in a GSM mode, a current working audio device group (the working audio device group comprises at least one audio device and the audio device is in a working state) is determined, and an antenna (the preferred antenna) which is corresponding to the working audio device group and enables the TDD noise in the working audio device group to be weakest is further determined according to the determined working audio device group, the preferred antenna is then operated as the working antenna. Therefore, by utilizing the hardware structure characteristics of the multi-antenna terminal, when the terminal adopts different working audio device groups to work, the working antenna is adjusted to be the preferred antenna corresponding to the current working audio device group, namely the influence of TDD noise in each audio device of the working audio device group is minimum, so that the influence of the TDD noise is reduced more quickly and better under the condition of not increasing the hardware cost, the conversation quality of a user is ensured, and the user experience is improved.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic hardware configuration diagram of an alternative mobile terminal implementing various embodiments of the present invention;

fig. 2 is a basic flowchart of a method for reducing TDD noise impact according to a first embodiment of the present invention;

fig. 3 is a structural diagram of a dual-antenna terminal according to a first embodiment of the present invention;

fig. 4 is a structural diagram of a three-antenna terminal according to a first embodiment of the present invention;

fig. 5 is a diagram illustrating an exemplary terminal structure according to a first embodiment of the present invention;

fig. 6 is a schematic specific flowchart illustrating a process of determining a preferred antenna corresponding to a current operating audio device group according to a first embodiment of the present invention;

fig. 7 is a schematic specific flowchart illustrating a method for determining a preferred antenna corresponding to a current operating audio device group according to yet another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a terminal according to a second embodiment of the present invention;

fig. 9 is a flowchart illustrating a method for reducing TDD noise impact according to a second embodiment of the present invention;

fig. 10 is a flowchart illustrating a further method for reducing TDD noise impact according to the second embodiment of the present invention;

fig. 11 is a flowchart illustrating another method for reducing TDD noise impact according to a second embodiment of the present invention;

fig. 12 is a schematic circuit diagram according to a third embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal according to a fourth embodiment of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

Based on the hardware structure of the mobile terminal, the invention provides various embodiments of the method.

First embodiment

In order to solve the problems that TDD noise is often improved on hardware, the debugging difficulty is high, the circuit is very complex, and the hardware cost is increased at present, this embodiment provides a method for reducing TDD noise impact applied to a multi-antenna terminal (i.e., a terminal having at least two antennas, such as a dual-antenna terminal and a triple-antenna terminal). Referring to fig. 2, fig. 2 is a basic flowchart of a method for reducing TDD noise impact according to this embodiment, including:

s201: when the terminal is in a GSM mode, determining a current working audio device group;

it should be understood that TDD noise is generated for the terminal due to the operation of time division multiple access in GSM. However, there are multi-system terminals in the market at present, so for a multi-system terminal, the terminal needs to determine whether itself is in the GSM mode. However, for a terminal capable of only operating in the GSM system, the determination step of the currently operating audio device group can be directly performed.

In practical application, there are two specific modes in the GSM system, which are the GSM voice mode and the GSM internet mode. Therefore, in this embodiment, the GSM mode may be only a GSM voice mode (i.e., each step of the method for reducing the TDD noise impact provided in this embodiment is performed only when the terminal is in the GSM voice mode), may also be only a GSM internet mode (i.e., each step of the method for reducing the TDD noise impact provided in this embodiment is performed only when the terminal is in the GSM internet mode), and may also include both the GSM voice mode and the GSM internet mode (i.e., each step of the method for reducing the TDD noise impact provided in this embodiment is performed when the terminal is in any GSM mode). Generally speaking, TDD noise is mainly generated in the GSM voice mode, so in view of saving terminal resources, in an embodiment of the present invention, the GSM mode may be set as the GSM voice mode.

In this embodiment, at least one audio device is included in the working audio device group, and the audio devices included in the working audio device group should be in a working state.

In this embodiment, the audio device refers to an electronic device that can receive or play a sound signal on the terminal, such as an earphone, a microphone, a speaker, an earphone, a stereo set, and the like.

In this embodiment, the audio device included in the working audio device group may be any audio device on the terminal, for example, any audio device built in the terminal, such as an earphone, a microphone, a built-in speaker, and the like, or any audio device externally connected to the terminal, such as an external speaker (a loudspeaker, a stereo, and the like), an earphone, and the like.

However, it should be noted that the audio devices included in the working audio device group may also be audio devices in a predetermined specific audio device set. That is, in the present embodiment, some audio devices may be designated in advance as audio devices in the audio device set, and thereafter, when determining the operating audio device group, the operating audio device group is determined only based on the audio devices in the audio device set. For example, the audio devices in the preset audio device set are headphones and speakers. It is only necessary to determine whether the earphones and/or speakers are currently active when the terminal determines the currently active set of audio devices. Generally, an audio device built in a terminal is protected on a hardware or circuit structure so as to reduce TDD noise generated by the audio device built in the terminal, but the audio device externally connected to the terminal cannot be protected or has a weak protection effect. Therefore, in a specific implementation manner of this embodiment, the audio devices in the preset audio device set may include at least one of an earphone and an external speaker.

It should be understood that, since the audio devices in the preset audio device set may not include all the audio devices on the terminal, there may be a case where the currently operating audio device group is determined to be unavailable or the determined currently operating audio device group is empty. At this time, the terminal can control the default antenna to continue to work as the working antenna. It should be clear that, for the terminal, a default antenna is often set to receive the initial signal. In addition, there may be other modes other than the GSM mode, and there may be situations where an audio device is not needed but an antenna is needed for operation, so for a terminal, it often sets a default antenna to implement signal reception in these situations.

It is noted that, in the method for reducing TDD noise impact provided in this embodiment, all the terminals are multi-antenna terminals. In fact, the multi-antenna terminal is not new at present, for example, as shown in fig. 3, a dual-antenna terminal (two

antennas

31 and 32 exist), as shown in fig. 4, a three-antenna terminal (three

antennas

41, 42 and 43 exist), and as well, a four-antenna terminal, a five-antenna terminal, etc. have similar structures as the dual-antenna terminal and the three-antenna terminal, and are not listed here.

S202: determining an optimal antenna corresponding to the working audio device group according to the determined working audio device group;

it should be noted that, in this embodiment, the preferred antenna corresponding to the operating audio device group refers to an antenna that minimizes TDD noise in the determined operating audio device group. It should be understood that the weakest TDD noise in the present embodiment means that the weakest overall TDD noise is generated in each audio device in the active audio device group. Meanwhile, the strength of the TDD noise in this embodiment refers to the overall size of the noise sound caused by the TDD noise generated in each audio device in an operating state in the operating audio device group.

In this embodiment, specific ways of determining the preferred antenna corresponding to the determined working audio device group according to the determined working audio device group include at least the following three ways, and in this embodiment, any way may be adopted to determine the preferred antenna corresponding to the current working audio device group.

The first method is as follows: the antenna corresponding to the current operating audio device group may be determined as the preferred antenna according to the correspondence relationship between the operating audio device group and the antenna, which is stored in advance.

In the first mode, the correspondence between the operating audio device set and the antenna may be obtained in a laboratory environment. Specifically, in a laboratory environment, the terminal may be first placed in a GSM mode, and then TDD noise tests are performed by using different antennas as working antennas one by one in different audio scenes, so as to obtain the antenna with the weakest TDD noise in each audio scene. It should be noted here that, the combination of the audio devices in the working state on the terminal (i.e., the working audio device group) is often different in different audio scenes, for example, the audio devices in the working state of the terminal are an earphone and a microphone when a normal phone is answered, and the audio devices in the working state are an earphone when an earphone phone is answered (the earphone is provided with the microphone). Specifically, if the combination of the audio devices in the working state on the terminal is the same in some audio scenes, the engineer may select only one audio scene for detection during detection. It should be further noted that, after obtaining the antenna with the weakest TDD noise in different audio scenes in a laboratory environment, the working audio device group corresponding to each audio scene and the antenna with the weakest TDD noise corresponding to the audio scene need to generate a corresponding relationship, and record and store the corresponding relationship in the terminal. In this embodiment, the correspondence between the operating audio device group and the antenna may be stored in the terminal in the form of a chart or the like, for example, in the form shown in the following table.

Watch 1

Working audio device group	Corresponding antenna
		Earphone and microphone	Antenna	2
Microphone and loudspeaker	Antenna				1
		…	…
Earphone set	Antenna 2

In fact, the strength of the TDD noise generated in an audio device is often inversely proportional to the distance between the audio device and the working antenna, i.e., the farther the audio device is from the working antenna, the weaker the TDD noise generated by the audio device is. Therefore, when the working audio device group in an audio scene only contains one audio device or contains a plurality of audio devices which are all located on the same side of the terminal, the antenna farthest away from the audio device or the audio devices located on the same side of the terminal can also be directly determined to be the antenna corresponding to the working audio device group in the audio scene. For example, referring to the terminal shown in fig. 5, the microphone 51 and the speaker 52 are both disposed on the bottom side of the terminal, the upper and lower ends of the terminal are respectively provided with the antenna 53 and the antenna 54, and if the working audio device group in the current audio scene is the microphone and the speaker, the antenna corresponding to the current working audio device group can be directly determined to be the antenna 53. When the distance between the audio odd track and the antenna is used for determining the antenna corresponding to the audio device group, the multiple detection is not needed, and the terminal resources and time are saved.

It should be understood that the first scheme has universality. Because all the structures of the same type of terminal are consistent, after the corresponding relation between the working audio device group of one terminal of the same type of terminal and the antenna is obtained in a laboratory environment, when the terminal is produced or sold, the corresponding relation obtained in the laboratory environment can be directly stored in each terminal, and the terminal does not need to search for the corresponding relation by itself in the using process. In addition, for other terminals with a structure similar to that of the terminal for laboratory detection (mainly, the antenna position structure and the position structure of the audio device are similar to that of the terminal for laboratory detection), the corresponding relationship between the working audio device group of the terminal for laboratory detection and the antenna can be directly transplanted to the terminal without redetection.

Scheme II: referring to the flowchart shown in fig. 6, a specific process of determining a preferred antenna corresponding to the current operating audio device group includes:

s601: detecting whether a corresponding relation between a current working audio device group and a certain antenna is stored in the terminal; if yes, go to step S602; otherwise, go to step S603.

In the second scheme, the corresponding relation between the working audio device group and the antenna is gradually added and stored in the using process of the user. Therefore, if the working audio device group in the current audio scene has been previously stored with the corresponding relationship with a certain antenna when the user uses the terminal (i.e. when it has been determined to use the current working audio device group in the previous use process, the antenna with the weakest TDD noise in the working audio device group), the corresponding relationship may be directly invoked to directly determine the preferred antenna, i.e. step S602 is executed. If the corresponding relation between the current working audio device group and a certain antenna is not stored in the terminal when the user uses the terminal, the terminal needs to detect to find out the antenna corresponding to the current working audio device group.

S602: and determining the antenna corresponding to the current working audio device group as the preferred antenna.

It should be understood that the positional relationship of each antenna to each audio device is fixed for the terminal. Therefore, even under different signal environments, the strength relation of the TDD noise influence caused by each antenna to each audio device is unchanged. The previously recorded preferred antenna for the current set of operating audio devices is still the preferred antenna for the current set of operating audio devices under the current circumstances. For example, it is recorded before that the preferred antenna corresponding to the headset is antenna a, then the preferred antenna corresponding to the headset is still antenna a in the current environment. Therefore, in the second scheme, the stored corresponding relationship between the current working audio device group and a certain antenna is searched, so that the preferred antenna of the current working audio device group can be directly confirmed.

S603: sequentially taking each antenna of the terminal as a working antenna and recording a TDD noise value generated in a current working audio device group when each antenna works;

in this embodiment, the operation time of each antenna as an operating antenna may be set to m seconds (m is greater than 0), and then the TDD noise value generated in the current operating audio device group by each antenna in the m seconds is recorded. In this embodiment, the recorded TDD noise value may be a peak value or an average value of TDD noise values generated in the respective antennas in m seconds such that the current operating tone set is present, or the like.

It should be understood that, for the terminal, the baseband chip therein may capture a TDD noise signal with a frequency of 217Hz from the audio device, and then may obtain a TDD noise value according to the captured TDD noise signal.

S604: determining the antenna with the weakest TDD noise in each antenna according to the recorded TDD noise values;

s605: determining the antenna with the weakest TDD noise as the preferred antenna corresponding to the current working audio device group;

it should be understood that, in addition to obtaining the preferred antenna in the above manner, for the case that the operating audio device group only includes one audio device or includes a plurality of audio devices all located on the same side of the terminal, the antenna with the farthest distance may also be directly determined as the preferred antenna according to the distance between each antenna and each audio device in the operating audio device group.

S606: and recording and storing the corresponding relation between the antenna with the weakest TDD noise and the current working audio device group.

In particular, for the way of directly determining the preferred antenna by using the distance, the corresponding relationship between the preferred antenna and the current operating audio device group should be recorded and saved.

In addition, there is no strict timing relationship between step S605 and step S606. That is, step S605 may be performed before step S606, may be performed after step S606, or may be performed simultaneously with step S606.

The third scheme is as follows: referring to the flowchart shown in fig. 7, a specific process of determining a preferred antenna corresponding to the current operating audio device group includes:

s701: sequentially taking each antenna of the terminal as a working antenna and recording a TDD noise value generated in a current working audio device group when each antenna works;

s702: determining the antenna with the weakest TDD noise in each antenna according to the recorded TDD noise values;

s703: determining the antenna with the weakest TDD noise as the preferred antenna corresponding to the current working audio device group;

s704: and recording and storing the corresponding relation between the antenna with the weakest TDD noise and the current working audio device group.

It should be noted that there is no strict timing relationship between step S703 and step S704. That is, step S703 may be performed before step S704, may be performed after step S704, or may be performed simultaneously with step S704.

It should be understood that the third method is similar to the second method, and the main difference is that in the second method, only one detection is performed on one working audio device group, so as to obtain and store the corresponding relationship, and only the corresponding relationship needs to be called subsequently. In the third method, when the audio operation in the GSM mode is performed each time, the corresponding preferred antenna needs to be detected and found again.

It should also be understood that, in the third mode, for the case that the operating audio device group only includes one audio device or includes multiple audio devices all located on the same side of the terminal, the antenna with the farthest distance may also be directly determined as the preferred antenna according to the distance between each antenna and each audio device in the operating audio device group. It should be understood that, for the way of determining the preferred antenna by using the distance, the position information of each device may be stored in the terminal in advance or the distance between each antenna and each audio device may be stored in the terminal in advance, so that each time the terminal determines the preferred antenna, the distance between each antenna and each audio device in the working audio device group may be obtained according to the information stored inside, and the preferred antenna may be determined.

S203: the preferred antenna is operated as an operating antenna.

In this embodiment, the terminal may be provided with a default antenna. After the preferred antenna corresponding to the current working audio device group is determined, the preferred antenna can be compared with the default antenna, and if the preferred antenna and the default antenna are not the same antenna, the working antenna is switched to the preferred antenna; if the preferred antenna is the default antenna, the switching operation of the working antenna is not executed.

It should be understood that, for the terminal, under different communication environments, sometimes the default antenna is used for communication, which may not cause the audio device to generate TDD noise or may generate negligible TDD noise. Therefore, the antenna switching at this time may cause unnecessary resource waste, and the switched antenna may not be as good for receiving and transmitting signals as the default antenna. Therefore, in this embodiment, when the terminal is in the GSM mode, the current TDD noise parameter of the terminal may be detected before the current working audio device group is determined, and then when the value of the TDD noise parameter is greater than the preset threshold, the current working audio device group is determined and the corresponding preferred antenna is found for switching. For the TDD noise parameter with a value less than or equal to the preset threshold, the procedure shown in fig. 2 may not be executed, and the default antenna is directly used as the working antenna for working.

It should be noted that when the terminal operates in the GSM system, the TDD noise generated by the larger signal transmission power is also larger, so that it can be determined whether the above-mentioned process shown in fig. 2 needs to be executed by detecting the current signal transmission power. In addition, the baseband chip in the terminal may also directly capture the TDD noise signal, so that it may also determine whether the above-mentioned flow shown in fig. 2 needs to be executed by detecting the TDD noise value. Therefore, the TDD noise parameter in this embodiment may include at least one of a TDD noise value and a signal transmission power.

It should be understood that, when the terminal 100 shown in fig. 1 is a multi-antenna terminal, the steps in the method for reducing the TDD noise impact provided by the present embodiment may be implemented independently by the terminal 100 shown in fig. 1. Specifically, the steps of the method for reducing the TDD noise impact may be implemented by storing one or more programs for implementing the steps in the memory 109, and executing the program by the processor 110 to determine a currently operating audio device group from the audio output unit 105, the microphone 1042, and the related audio devices such as the external device, for example, the earphone, of the terminal 100, determine a preferred antenna, and control switching of the antenna.

In the method for reducing the TDD noise impact provided in this embodiment, by using the characteristic that a multi-antenna terminal (e.g., a dual-antenna terminal, a three-antenna terminal, etc.) has multiple antennas and the characteristic that TDD noise generated in an audio device is weaker when an audio device in the terminal is farther from a working antenna, when the multi-antenna terminal is in a GSM mode, a current working audio device group (where the working audio device group includes at least one audio device and the audio device is in a working state) is determined, an antenna (i.e., a preferred antenna) corresponding to the working audio device group and causing the TDD noise in the working audio device group to be weakest is further determined according to the determined working audio device group, and then the preferred antenna is used as a working antenna to operate. Therefore, by utilizing the hardware structure characteristics of the multi-antenna terminal, when the terminal adopts different working audio device groups to work, the working antenna is adjusted to be the preferred antenna corresponding to the current working audio device group, namely the influence of TDD noise in each audio device of the working audio device group is minimum, so that the influence of the TDD noise is reduced more quickly and better under the condition of not increasing the hardware cost, the conversation quality of a user is ensured, and the user experience is improved.

Second embodiment

This embodiment is based on the first embodiment, and further illustrates the present invention by taking several specific procedures for reducing TDD noise impact when the GSM mode is the GSM voice mode as an example.

The first method comprises the following steps:

setting a specific mode of determining a preferred antenna corresponding to the current working audio device group as a mode one, and setting a terminal structure as shown in fig. 8; the detection of the TDD noise parameter is not performed prior to determining the current set of operating audio devices. Referring to fig. 9, fig. 9 is a flowchart illustrating a detailed method for reducing TDD noise impact according to this embodiment, where the method includes:

s901: judging whether the terminal is in a GSM voice mode or not; if yes, go to step S902; otherwise, go to step S905.

S902: detecting the audio device in the current working state, and determining the current working audio device group;

all the detected audio devices in the working state form a working audio device group. Here, all detected audio devices in the working state are assumed to be earphones (the earphones are not shown in fig. 8, and 81 is an earphone jack).

It should be understood that, if an audio device set is preset in the terminal and the audio devices included in the audio device set have no earphone, the current working audio device set is empty, and a default antenna may be used for working.

It should also be understood that, in this embodiment, when an audio device set is preset in the terminal, the audio devices currently in the working state may be detected first, and then which of the audio devices currently in the working state are determined to be the audio devices in the audio device set. However, in addition to the foregoing manner, the terminal may also sequentially detect whether the terminal is in the operating state directly according to the audio devices included in the audio device set. For example, if the audio device set includes headphones, it is detected whether the headphones are plugged in, and if so, it is determined that the headphones are the audio devices in the currently operating audio device set.

S903: calling a corresponding relation between a pre-stored working audio device group and an antenna, and finding out the antenna corresponding to the current working audio device group according to the determined current working audio device group;

in this embodiment, the correspondence between the operating audio device group and the antenna is obtained in a laboratory environment and stored in the terminal before the terminal is sold.

S904: the antenna is taken as the preferred antenna and the working antenna is switched to the preferred antenna.

And if the antenna corresponding to the earphone is the antenna 1, the antenna 1 is preferably selected as the antenna, and the terminal switches the antenna 1 into a working antenna. It should be understood that the terminal may not perform the switching action when the default antenna is also antenna 1.

S905: a default antenna is used as the working antenna.

And the second method comprises the following steps:

setting a specific mode of determining a preferred antenna corresponding to the current working audio device group as a mode one, and setting a terminal structure as shown in fig. 8; and a detection process of the TDD noise parameter exists before the current working audio device group is determined, and the TDD noise parameter is set as the signal transmitting power. Referring to fig. 10, fig. 10 is a flowchart illustrating a further method for reducing TDD noise impact according to this embodiment, where the method includes:

s1001: judging whether the terminal is in a GSM voice mode or not; if yes, go to step S1002; otherwise, go to step S1006.

S1002: detecting whether the current signal transmitting power of the terminal is greater than a preset threshold value or not; if yes, go to step S1003; otherwise, go to step S1006.

S1003: detecting the audio device in the current working state, and determining the current working audio device group;

all the detected audio devices in the working state form a working audio device group. Here, we assume that all audio devices detected to be in an operating state are loudspeakers (i.e., the loudspeaker 82 in fig. 8).

It should be understood that, if an audio device set is preset in the terminal and the audio devices included in the audio device set do not have a speaker, the current working audio device set is empty, and a default antenna may be used for working.

S1004: calling a corresponding relation between a pre-stored working audio device group and an antenna, and finding out the antenna corresponding to the current working audio device group according to the determined current working audio device group;

S1005: the antenna is taken as the preferred antenna and the working antenna is switched to the preferred antenna.

And if the antenna corresponding to the horn is the antenna 2, the antenna 2 is preferably selected as the antenna, and the terminal switches the antenna 2 to be the working antenna. It should be understood that the terminal may not perform the switching action when the default antenna is also antenna 2.

S1006: a default antenna is used as the working antenna.

And the third is that:

setting a specific mode of determining a preferred antenna corresponding to the current working audio device group as a mode two, and setting a terminal structure as shown in fig. 8; and a detection process of the TDD noise parameter exists before the current working audio device group is determined, and the TDD noise parameter is set as the signal transmitting power. Referring to fig. 11, fig. 11 is a detailed flowchart of another method for reducing TDD noise impact according to this embodiment, including:

s1101: judging whether the terminal is in a GSM voice mode or not; if yes, go to step S1102; otherwise, go to step S1111.

S1102: detecting whether the current signal transmitting power of the terminal is greater than a preset threshold value or not; if yes, go to step S1103; otherwise, go to step S1111.

S1103: detecting the audio device in the current working state, and determining the current working audio device group;

all the detected audio devices in the working state form a working audio device group. Here, we assume that all detected audio devices in the active state are receivers and microphones (i.e., receivers 83 and microphones 84 in fig. 8).

S1104: detecting whether a corresponding relation between a current working audio device group and a certain antenna is stored in the terminal; if yes, go to step S1105; otherwise, go to step S1107.

S1105: calling the corresponding relation between the current working audio device group and the antenna, and determining the antenna corresponding to the current working audio device group;

if the antenna corresponding to the working audio device group of the receiver and the microphone is the antenna 3, the antenna 3 is preferably selected as the antenna, and the terminal switches the antenna 3 to the working antenna. It should be understood that the terminal may not perform the switching action when the default antenna is also antenna 3.

S1106: the antenna is taken as the preferred antenna and the working antenna is switched to the preferred antenna.

S1107: sequentially taking each antenna of the terminal as a working antenna and recording a TDD noise value generated in a current working audio device group when each antenna works;

s1108: determining the antenna with the weakest TDD noise in each antenna according to the recorded TDD noise values;

s1109: taking the antenna as a preferred antenna and switching the working antenna to the preferred antenna;

s1110: and recording and storing the corresponding relation between the antenna with the weakest TDD noise and the current working audio device group.

It should be understood that step S1109 and step S1110 have no timing limitation.

S1111: a default antenna is used as the working antenna.

It should be understood that the three specific ways of reducing the TDD noise impact listed in the present embodiment are only examples for facilitating understanding of the present invention, and do not represent that the present invention can only adopt the above three ways.

The invention provides a method for reducing TDD noise influence, which utilizes the characteristic that a multi-antenna terminal has a plurality of antennas and the characteristic that the farther an audio device in the terminal is from a working antenna, the weaker the TDD noise generated in the audio device is, and ensures that the working antenna has the minimum influence on the currently working audio device in an antenna switching mode. Therefore, under the condition of not increasing hardware cost, the influence of TDD noise is reduced more quickly and better, the conversation quality of a user is ensured, and the user experience is improved.

Third embodiment

The present embodiment provides a terminal modular circuit for implementing the method for reducing TDD noise impact according to the first embodiment and/or the second embodiment. Referring to fig. 12, the circuit includes a radio frequency transceiver module 121, a smart antenna switching module 122, a baseband module 123, an audio device module 124, a memory module 125, a detection module 126, and at least two antennas 127. Wherein: the radio frequency transceiver module 121 is connected with the baseband module 123 and the intelligent antenna switching module 122; the intelligent antenna switching module 122 is connected with the radio frequency transceiving module 121 and the antenna 127; the baseband module 123 is connected with the radio frequency transceiver module 121, the audio device module 124, the memory module 125 and the detection module 126; the audio device module 124 is connected with the baseband module 123 and the detection module 126; the memory module 125 is connected to the baseband module 123; the detection module 126 is connected with the baseband module 123 and the audio device module 124; at least two antennas 127 are connected to the smart antenna switching module 122. Wherein:

the rf transceiver module 121 is configured to perform up-conversion or down-conversion on the transmit signal and the receive signal.

The smart antenna switching module 122 is configured to switch the antennas at different positions on the terminal according to the processing result of the baseband module, that is, switch the working antennas according to the processing result of the baseband module.

The baseband module 123 is used for modulating and demodulating signals and processing data captured or received from the rf transceiver module 121, the audio device module 124, the memory module 125, and the detection module 126, and is substantially a baseband chip.

And an audio device module 124 for inputting and outputting audio signals, such as an earphone socket, a speaker, and the like.

A memory module 125 for storing data. For example, storage of the correspondence relationship between the operating audio device group and the antenna, and the like. Namely a memory in hardware.

The detecting module 126 is configured to detect the audio devices in the audio device module 124 to determine which audio devices are in an operating state.

An antenna 127 for receiving signals and devices for transmitting signals.

The method for reducing TDD noise impact as described in the first and/or second embodiments above may be implemented by a circuit as shown in fig. 12. The functions of the smart antenna switching module 122, the baseband module 123, and the detection module 126 can be implemented by a highly integrated processor in hardware.

Fourth embodiment

The present embodiment provides a terminal, as shown in fig. 13, which includes a processor 131, a memory 132, an audio device 133, a communication bus 134, and at least two antennas 135. Wherein:

the communication bus 134 is used to enable connection communication between the processor 131, the memory 132, the audio device 133, and the antenna 135.

The processor 131 is configured to execute one or more programs stored in the memory 132 to implement the steps of the method for reducing TDD noise impact according to the first embodiment and/or the second embodiment.

Meanwhile, the present embodiment also provides a computer-readable storage medium, such as a floppy disk, an optical disk, a hard disk, a flash memory, a U-disk, a CF card, an SD card, an MMC card, etc., in which one or more programs for implementing the above steps are stored, and the one or more programs can be executed by one or more processors to implement the steps of the method for reducing TDD noise influence according to the first embodiment and/or the second embodiment. And will not be described in detail herein.

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.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a 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, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for reducing the influence of TDD noise is applied to a terminal with at least two antennas to reduce the interference of TDD noise to an audio signal in a radiation manner, and the method for reducing the influence of TDD noise comprises the following steps:

when the terminal is in a GSM mode, determining a current working audio device group; the working audio device group comprises at least one audio device, the audio device is in a working state, and the GSM mode comprises any one of a GSM voice mode and a GSM internet access mode;

operating the preferred antenna as an operating antenna.

2. The method for reducing TDD noise impact according to claim 1, wherein the specific manner for determining the preferred antenna corresponding to the working audio device group according to the working audio device group is any one of the following three manners:

3. The method for reducing TDD noise impact according to claim 2, wherein the determining the preferred antenna corresponding to the operating audio device group according to the operating audio device group is in a first mode, and before the determining the current operating audio device group, the method further comprises:

4. The method for reducing TDD noise impact of claim 1, wherein the GSM mode is: GSM voice mode, and/or GSM internet mode.

5. The method for reducing TDD noise impact according to any one of claims 1-4, wherein an audio device set is preset in said terminal; and the audio devices contained in the working audio device group are audio devices in the audio device set.

6. The method for reducing TDD noise impact of claim 5, wherein the audio devices of the set of audio devices include at least one of headphones and external speakers.

7. The method for reducing the impact of TDD noise according to any of claims 1-4, wherein when the terminal is in GSM mode, before the determining the current set of operating audio devices, further comprising:

8. The method of reducing TDD noise impact of claim 7, wherein the TDD noise parameter includes at least one of a TDD noise value and a signal transmit power.

9. A terminal, characterized in that the terminal comprises a processor, a memory, an audio device, a communication bus and at least two antennas;

the processor is configured to execute one or more programs stored in the memory to implement the steps of the method of reducing TDD noise impact according to any one of claims 1-8.

10. A computer readable storage medium, storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of the method for reducing TDD noise impact according to any one of claims 1-8.