CN108495362B

CN108495362B - Signal transmission method and communication circuit

Info

Publication number: CN108495362B
Application number: CN201810196405.5A
Authority: CN
Inventors: 袁野; 徐逸
Original assignee: Guangdong Genius Technology Co Ltd
Current assignee: Guangdong Genius Technology Co Ltd
Priority date: 2018-03-09
Filing date: 2018-03-09
Publication date: 2021-06-01
Anticipated expiration: 2038-03-09
Also published as: CN108495362A

Abstract

A signal transmission method and a communication circuit are provided, the communication circuit is applied to wearable equipment and comprises a main control chip, a radio frequency transceiver chip, a radio frequency power management (APT) chip, a transmitting module TxM chip and an antenna module, wherein: the main control chip sends first radio frequency signal information to the radio frequency transceiving chip and the APT chip; when receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal to the TxM chip; when receiving the first radio frequency signal information, the APT chip outputs control voltage to the TxM chip; TxM the chip adjusts and filters the power of the first radio frequency signal under the control of the control voltage, and obtains and sends the second radio frequency signal to the antenna module; the antenna module receives and outputs a second radio frequency signal to the outside. By implementing the embodiment of the invention, the emission consumption of the wearable equipment can be reduced, so that the cruising ability of the wearable equipment is improved.

Description

Signal transmission method and communication circuit

Technical Field

The invention relates to the technical field of wearable equipment, in particular to a signal transmission method and a communication circuit.

Background

The traditional way for a smart watch to output a 4G radio frequency signal is generally: the 4G radio frequency signals output by the radio frequency transceiver chip are subjected to Power amplification through a Multimode multi-band Power Amplifier (MMMB PA), the amplified 4G radio frequency signals are sent to a Surface Acoustic Wave (SAW) filter of a transmitting end through a first transmission circuit, the amplified 4G radio frequency signals are filtered through the SAW filter of the transmitting end, and then the filtered 4G radio frequency signals are further sent to an antenna through a second transmission circuit, so that the antenna outputs the filtered 4G radio frequency signals. In practice, two transmission circuits exist in the traditional 4G radio frequency signal output process, so that the radio frequency receiving and transmitting chip needs to send a 4G radio frequency signal with higher power to be capable of offsetting the power loss caused by the two transmission circuits, the transmitting power consumption of the intelligent watch is increased, and the cruising ability of the intelligent watch is further reduced.

Disclosure of Invention

The embodiment of the invention discloses a signal transmission method and a communication circuit, wherein the communication circuit is a communication circuit of wearable equipment, and the method is suitable for the communication circuit of the wearable equipment.

The first aspect of the embodiment of the present invention discloses a signal transmission method, which is applied to a communication circuit of a wearable device, wherein the communication circuit includes a main control chip, a radio frequency transceiver chip, a radio frequency power management (APT) chip, a transmission module TxM chip and an antenna module, and the method includes:

the main control chip sends first radio frequency signal information to the radio frequency transceiver chip and sends the first radio frequency signal information to the APT chip;

when receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the TxM chip;

when the APT chip receives the first radio frequency signal information, the APT chip outputs control voltage matched with the first radio frequency signal information to the TxM chip;

the TxM chip performs power adjustment and filtering on the first radio frequency signal under the control of the control voltage to obtain a second radio frequency signal, and sends the second radio frequency signal to the antenna module;

and the antenna module outputs the second radio frequency signal when receiving the second radio frequency signal.

As an optional implementation manner, in the first aspect of the embodiment of the present invention, when receiving the first radio frequency signal information, the APT chip outputs a control voltage matched with the first radio frequency signal information to the TxM chip, where the method includes:

when the APT chip receives the first radio frequency signal information, the APT chip acquires radio frequency signal power information included in the first radio frequency signal information;

the APT chip performs grading operation on the radio frequency signal power information by taking power grading information as a basis to obtain grading power information;

the APT chip is matched according to the grading power information to obtain a control voltage;

the APT chip outputs the control voltage to the TxM chip.

As an optional implementation manner, in the first aspect of the embodiment of the present invention, the outputting, by the APT chip, the control voltage to the TxM chip includes:

the APT chip outputs the control voltage to a direct-current voltage interface of the TxM chip; the direct-current voltage interface of the TxM chip is used for receiving the control voltage and supplying power for the TxM chip.

As an optional implementation manner, in the first aspect of the embodiment of the present invention, the communication circuit further includes a transmission matching circuit;

when receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the TxM chip, including:

when receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the transmission matching circuit, so that the transmission matching circuit sends the first radio frequency signal to the TxM chip.

As an optional implementation manner, in the first aspect of the embodiment of the present invention, the TxM chip performs power adjustment and filtering on the first radio frequency signal under the control of the control voltage to obtain a second radio frequency signal, and sends the second radio frequency signal to the antenna module, where the method includes:

the TxM chip amplifies the power of the first radio frequency signal under the control of the control voltage to obtain an amplified radio frequency signal;

the TxM chip filters the amplified radio-frequency signal through a low-pass filter built in the TxM chip to obtain a second radio-frequency signal;

the TxM chip sends the second radio frequency signal to the antenna module.

The second aspect of the embodiments of the present invention discloses a communication circuit, which is applied in a wearable device and includes a main control chip, a radio frequency transceiver chip, a radio frequency power management APT chip, a transmitting module TxM chip, and an antenna module, wherein,

the main control chip is used for sending first radio frequency signal information to the radio frequency transceiver chip and sending the first radio frequency signal information to the APT chip;

the radio frequency transceiver chip is configured to send a first radio frequency signal matched with the first radio frequency signal information to the TxM chip when receiving the first radio frequency signal information;

the APT chip is used for outputting a control voltage matched with the first radio frequency signal information to the TxM chip when the APT chip receives the first radio frequency signal information;

the TxM chip is configured to, under control of the control voltage, perform power adjustment and filtering on the first radio frequency signal to obtain a second radio frequency signal, and send the second radio frequency signal to the antenna module;

the antenna module is configured to output the second radio frequency signal when receiving the second radio frequency signal.

As an optional implementation manner, in the second aspect of the embodiment of the present invention, when the APT chip receives the first radio frequency signal information, a manner of outputting a control voltage matched with the first radio frequency signal information to the TxM chip is specifically as follows:

the APT chip outputs the control voltage to the TxM chip.

As an optional implementation manner, in the second aspect of the embodiment of the present invention, a manner of outputting the control voltage to the TxM chip by the APT chip is specifically as follows:

As an optional implementation manner, in the second aspect of the embodiment of the present invention, the communication circuit further includes a transmission matching circuit;

the radio frequency transceiver chip is specifically configured to send, when receiving the first radio frequency signal information, a first radio frequency signal matched with the first radio frequency signal information to the transmission matching circuit, so that the transmission matching circuit sends the first radio frequency signal to the TxM chip.

As an optional implementation manner, in the second aspect of the embodiment of the present invention, the manner in which the TxM chip adjusts and filters the power of the first radio frequency signal under the control of the control voltage to obtain a second radio frequency signal, and sends the second radio frequency signal to the antenna module specifically is:

the TxM chip sends the second radio frequency signal to the antenna module.

A third aspect of an embodiment of the present invention discloses a wearable device, including:

a memory storing executable program code;

a processor coupled with the memory;

the processor calls the executable program code stored in the memory to execute a signal transmission method disclosed in the first aspect of the embodiment of the present invention.

A fourth aspect of the embodiments of the present invention discloses a computer-readable storage medium storing a computer program, where the computer program causes a computer to execute a signal transmission method disclosed in the first aspect of the embodiments of the present invention.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, a communication circuit for wearable equipment comprises a main control chip, a radio frequency transceiver chip, a radio frequency power management (APT) chip, a transmitting module TxM chip and an antenna module, wherein the main control chip in the communication circuit sends first radio frequency signal information to the APT chip and the radio frequency transceiver chip, when the APT chip receives the first radio frequency signal information, the APT chip obtains and sends control voltage matched with the first radio frequency signal information to a TxM chip, meanwhile, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to a TxM chip, and the TxM chip amplifies and filters the power of the first radio frequency signal under the control of the control voltage and sends a second radio frequency signal obtained by amplifying and filtering the first radio frequency signal to the antenna module so that the antenna module outputs the second radio frequency signal. Therefore, by implementing the embodiment of the invention, the TxM chip can be used for directly performing filtering operation after amplifying the power of the 4G radio frequency signal, so that the power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

FIG. 2 is a flow chart of another signal transmission method disclosed in the embodiment of the present invention;

FIG. 3 is a flow chart of another signal transmission method disclosed in the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a communication circuit according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another communication circuit according to the disclosure;

FIG. 6 is a schematic diagram of another communication circuit according to the disclosure;

FIG. 7 is a schematic diagram of another communication circuit according to the disclosure;

FIG. 8 is a table of comparative data generated by practicing an embodiment of the present invention;

fig. 9 is a graph of power consumption produced by implementing an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The embodiment of the invention discloses a signal transmission method and a communication circuit, which can reduce the emission consumption of wearable equipment, thereby improving the cruising ability of the wearable equipment. The following are detailed below.

Example one

Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a signal transmission method according to an embodiment of the present invention. As shown in fig. 1, the signal transmission method is applied to a communication circuit of a wearable device, where the communication circuit includes a main control chip, a radio frequency transceiver chip, a radio frequency power management APT chip, a transmission module TxM chip, and an antenna module, and the method may include the following steps:

101. the main control chip sends first radio frequency signal information to the radio frequency transceiving chip and sends the first radio frequency signal information to the APT chip.

In this embodiment of the present invention, the first radio frequency signal information may include frequency information, power information, and other information of the first radio frequency signal, which is not limited in this embodiment of the present invention.

In the above embodiment of the present invention, the frequency information of the first radio frequency signal may specifically be LTE B39 (1880MHz to 1920MHz) frequency band information.

In the embodiment of the present invention, the main control chip may be a main control chip supporting LTE communication and APT (including LTE APT).

As an optional implementation manner, the main control chip has a storage function, wherein before the main control chip sends the first radio frequency signal information to the radio frequency transceiver chip, the method may further include:

the main control chip detects whether the calling information is received, and if the calling information is not received, the main control chip repeatedly executes the step of detecting whether the calling information is received; if the main control chip receives the calling information, the main control chip acquires the transmitter information and the first radio frequency signal information which are included in the calling information, and records the transmitter information, wherein the transmitter information is one or all of a superior transmission hardware name or a software name which triggers the operation of sending the calling information in the wearable device; the name of the superior transmission hardware is the name of the superior transmission hardware, and the superior transmission hardware can be the hardware for transmitting the call information.

By implementing the implementation mode, the main control chip can acquire the calling information triggering the sending of the first radio frequency signal information before sending the first radio frequency signal information and acquire and record the transmitter information included in the calling information, so that the main control chip can record information when sending the transmitter information and the first radio frequency signal information each time, and the traceability of the main control chip for sending the first radio frequency signal information is ensured.

As a further optional implementation manner, after the main control chip acquires the transmitter information and the first radio frequency signal information included in the call information, and records the transmitter information, the method may further include:

when the main control chip detects that the total information amount of the recorded transmitter information exceeds the preset cleaning total amount, the main control chip cleans the transmitter information in a preset cleaning mode, wherein the preset cleaning mode is a cleaning mode of preferentially cleaning the transmitter information with long storage time and determining that the residual information is the information amount of the preset percentage of the preset cleaning total amount.

By implementing the implementation mode, the main control chip can quantitatively update the transmitter information stored in the storage space, so that the main control chip can store new transmitter information, the situation that the information is useless and redundant is avoided, and the memory utilization rate of the main control chip is improved.

As a further optional implementation manner, after the main control chip obtains the transmitter information and the first radio frequency signal information included in the call information, and records the transmitter information, or after the main control chip detects that the total information amount of the recorded transmitter information exceeds a preset cleaning total amount, the main control chip cleans the transmitter information in a preset cleaning manner, the method may further include:

when the main control chip detects that the length of time for which the transmitter information is not cleared is equal to or longer than the preset clearing length of time, the main control chip clears the transmitter information in a timing clearing mode, wherein the timing clearing mode is a clearing mode for clearing the transmitter information with longer length of time according to the time proportion.

By implementing the implementation mode, the main control chip can update the transmitter information stored in the storage space at regular time, so that the main control chip can store new transmitter information, the situation that the information is useless and redundant is avoided, and the memory utilization rate of the main control chip is improved.

As a further optional implementation manner, after the main control chip obtains the transmitter information and the first radio frequency signal information included in the call information, and records the transmitter information, the method may further include:

the main control chip carries out statistical sorting on stored transmitter information to obtain a transmitter information set comprising a software name, detects whether the transmitter information continuously and repeatedly comprises the same software name exists in the transmitter information set, if yes, the software name is uploaded to a software management center of the wearable device, so that the software management center marks software corresponding to the software name as signal high-frequency using software, and the software management center integrates calling information sent by the same software within a certain time by using an integration algorithm.

In the above embodiment, the software management center may be software, or may be hardware capable of executing the fixed function, or may be a device capable of executing the function in another form, and the embodiment of the present invention is not limited thereto.

By implementing the implementation mode, the main control chip and the software management center can be combined, and the software management center can determine the software application with higher communication circuit frequency according to the information after acquiring the information acquired by the main control chip, and package and integrate the calling information when the calling information is sent by the software application in a short time, so that the frequency of sending signals by the communication circuit in a short time can be reduced, and the power consumption caused by high-frequency sending is further reduced.

As an optional implementation manner, after the main control chip sends the first radio frequency signal information to the radio frequency transceiver chip and sends the first radio frequency signal information to the APT chip, the method may further include:

the main control chip detects whether information of signals sent by the antenna module exists, and if yes, the signals are determined to be successfully transmitted; if not, the main control chip detects whether the information of the signals sent by the antenna module exists again after presetting the time length threshold, if not, the information that the signals are not sent successfully is recorded, the first radio frequency signal information is sent to the radio frequency transceiving chip again, and the first radio frequency signal information is sent to the APT chip.

By implementing the implementation mode, the main control chip can monitor whether the signal is successfully transmitted or not by the communication circuit, and record and retransmit the signal after the signal is failed to be transmitted, so that the situation that the signal is failed to be transmitted only once can be avoided, the probability of the signal transmission failure is reduced, and the stability of the signal transmitted by the communication circuit is improved.

102. When receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the TxM chip.

In the embodiment of the invention, the radio frequency transceiver chip can be matched with the main control chip, the APT chip and the TXM chip, thereby playing two functions of transmitting LTE radio frequency low-power signals and receiving LTE radio frequency signals.

As an alternative embodiment, when receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the TxM chip, which may include:

when receiving the first radio frequency signal information, the radio frequency transceiver chip acquires frequency information of a first radio frequency signal included in the first radio frequency signal information, and sends the first radio frequency signal matched with the frequency information to the TxM chip, wherein the frequency information of the first radio frequency signal may specifically be LTE B39 (1880 MHz-1920 MHz) frequency band information.

By implementing the implementation mode, the radio frequency transceiver chip can acquire the first radio frequency signal corresponding to the frequency information according to the frequency information of the first radio frequency signal included in the acquired first radio frequency signal information, so that the radio frequency transceiver chip can accurately acquire the corresponding information, and the accuracy of the radio frequency transceiver chip in transmitting signals is improved.

As a further optional implementation manner, when receiving the first radio frequency signal information, the radio frequency transceiver chip obtains frequency information of the first radio frequency signal included in the first radio frequency signal information, and sends the first radio frequency signal matched with the frequency information to the TxM chip, which may include:

when receiving the first radio frequency signal information, the radio frequency transceiver chip acquires frequency information of the first radio frequency signal included in the first radio frequency signal information, determines a radio frequency low-power signal matched with the frequency information as a first radio frequency signal, and sends the first radio frequency signal to the TxM chip.

By implementing the implementation mode, the fact that the radio frequency transceiver chip sends the low-power signal can be determined, so that the power of the radio frequency transceiver chip is not too high, and the power consumption of the radio frequency transceiver chip in transmitting the first radio frequency signal is reduced.

103. When receiving the first radio frequency signal information, the APT chip outputs a control voltage matched with the first radio frequency signal information to the TxM chip.

In the embodiment of the invention, the APT chip can be matched with the main control chip and the TxM chip to realize dynamic debugging of APT output voltage according to different LTE transmitting powers, and the APT chip is mainly characterized by being controlled and output and is a key chip for realizing an APT function.

In the embodiment of the present invention, the APT technology is called Average Power Tracking, and the chinese name is Average Power Tracking technology, and in the embodiment of the present invention, the APT chip is a radio frequency Power amplifier Power Management chip (PA Power Management IC), and the APT chip can at least manage a radio frequency Power supply, and is not limited in the embodiment of the present invention with respect to other functions not used by the APT chip.

In the embodiment of the present invention, the APT chip may further replace a chip including an Envelope Tracking (ET) function, where corresponding changes and adjustments need to be performed on the entire circuit when the chip is replaced, and details are not described in this embodiment of the present invention.

As an alternative embodiment, when receiving the first rf signal information, the APT chip outputs a control voltage matched with the first rf signal information to the TxM chip, which may include:

when the APT chip receives the first radio frequency signal information, the working busy and idle degree of the current APT chip is judged, the working busy and idle degree can be obtained by calculating the working times of the APT chip in fixed time, the busy and idle degree can be divided into three degrees of busy, middle and idle, when the APT chip judges that the current busy and idle degree is busy, the APT chip stops working in preset time, control voltage matched with the first radio frequency signal information is output to TxM chips after the preset time, and the preset time is the time of fixed proportion of the time for outputting the control voltage.

By implementing the implementation mode, the APT chip can automatically judge the current busy/idle degree of work and automatically adopt the self-stop mode when the work is busy, so that the probability of various problems caused by long-time continuous work of the APT chip is reduced, wherein the problems include but are not limited to the problem of heating and scalding caused by overlong working time.

104. TxM under the control of control voltage, the chip adjusts and filters the power of the first RF signal to obtain the second RF signal, and sends the second RF signal to the antenna module.

In the embodiment of the invention, the TxM chip can work together with the main control chip and the APT chip, wherein the TxM chip can amplify the LTE B39 radio frequency low-power signal under the bias voltage (PA VCC) of the power amplifier to obtain a high-power signal.

As an alternative implementation, the TxM chip performing power adjustment and filtering on the first rf signal under the control of the control voltage to obtain a second rf signal, and sending the second rf signal to the antenna module, may include:

the TxM chip amplifies the power of the first radio frequency signal under the control of the control voltage to obtain an amplified first radio frequency signal (the power of the first radio frequency signal only needs to meet the communication standard of the communication industry), and the TxM chip filters the amplified first radio frequency signal to obtain a second radio frequency signal and sends the second radio frequency signal to the antenna module.

By implementing the implementation mode, the TxM chip determines an amplification bottom limit for the amplification of the power of the first radio frequency signal, and the TxM chip can realize subsequent functions only by amplifying the first radio frequency signal according to the amplification bottom limit, so that power consumption caused by excessive amplification of the first radio frequency signal can be effectively avoided.

As a further alternative, the TxM chip filtering the amplified first rf signal may include:

the TxM chip adjusts the upper threshold of the low-pass filter according to the frequency of the first RF signal and further performs the low-pass filtering on the amplified first RF signal.

By implementing the embodiment, the TxM chip can adaptively adjust the upper limit of the filter gate of the low-pass filter in the TxM chip according to the frequency information of the first radio frequency signal, so that the accuracy of filtering is improved, and the signal processing capability of the TxM chip is enhanced.

105. And the antenna module outputs a second radio frequency signal when receiving the second radio frequency signal.

In the embodiment of the invention, the antenna module is a final LTE signal transmitting and receiving component of the wearable device.

In the embodiment of the present invention, when a conventional MMMB PA (Multimode multi-band PA) works at different power levels, a system calls an internal cured APT bias (also called VCC bias of PA) to apply to a VCC interface of the MMMB PA; the difference between the approach using the TxM chip and the approach using the MMMB PA is mainly the difference in the supply connection of VCC.

When an TxM chip is used for transmitting an LTE B39 signal, the voltage output by the APT chip is connected to VCC of a TxM chip; when the MMMB is used for transmitting an LTE B39 signal, the voltage output by the APT chip is connected to VCC of the MMMB PA, wherein the difference between the two is that the hardware VCC connection is different, and the APT algorithm part has no difference (namely, the APT algorithm of the conventional MMMB PA is consistent with the APT algorithm of the TXM).

Referring to fig. 8, fig. 8 is a table of comparison data generated by implementing an embodiment of the present invention. As can be seen from the table, the combination of TxM chip and APT chip is used at different power levels (each of which can guarantee rf power, and the rf index of which meets the industry regulations) to be smaller than the actual power and the current parameter of the combination of MMMB PA and APT chip, and thus, the combination of TxM chip and APT chip is used to be smaller than the power consumption of the combination of MMMB PA and APT chip at different power levels.

Referring to fig. 9, fig. 9 is a diagram illustrating a power consumption comparison according to an embodiment of the present invention. As can be seen, the overall current generated using the combination of the conventional MMMB PA and APT chips is larger than that generated using the combination of the TxM chip and the APT chip, so that it can be concluded that the power consumption generated using the combination of the conventional MMMB PA and APT chips is larger, and further, that the combined power consumption of the TxM chip and the APT chip is lower.

In the method depicted in fig. 1, when the communication circuit (which may also be referred to as LTE B39 system) operates, the main control chip knows the first transmission signal information (including the power level of the first transmission signal) and controls the radio frequency transceiver chip to transmit an LTE B39 low-power radio frequency signal; meanwhile, the main control chip controls the APT chip to output a preset APT bias voltage, and opens TxM chip, so that the TxM chip outputs the final expected transmission power after receiving the LTE B39 low-power radio-frequency signal input and the APT bias voltage. By implementing the implementation mode, the power amplification of the 4G radio frequency signal can be directly performed through the TxM chip, so that the power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is increased.

Example two

Referring to fig. 2, fig. 2 is a schematic flow chart illustrating another signal transmission method according to an embodiment of the present invention. As shown in fig. 2, the signal transmission method is applied to a communication circuit of a wearable device, where the communication circuit includes a main control chip, a radio frequency transceiver chip, a radio frequency power management APT chip, a transmission module TxM chip, and an antenna module, and the method may include the following steps:

201. the main control chip sends first radio frequency signal information to the radio frequency transceiving chip and sends the first radio frequency signal information to the APT chip.

202. When receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the TxM chip.

203. When receiving the first radio frequency signal information, the APT chip acquires radio frequency signal power information included in the first radio frequency signal information.

In the embodiment of the invention, the APT chip can be matched with the main control chip, the radio frequency transceiver chip and the TXM chip, thereby playing two functions of transmitting LTE radio frequency low-power signals and receiving LTE radio frequency signals.

As an optional implementation manner, after the APT chip obtains the radio frequency signal power information included in the first radio frequency signal information when receiving the first radio frequency signal information, the method may further include:

and the APT chip determines whether the power information of the radio-frequency signal does not accord with the power information of the sending standard or not according to the power information of the radio-frequency signal, if so, the APT chip filters the power information of the radio-frequency signal and stops executing the subsequent steps to wait for the next sending of the power information of the radio-frequency signal.

By implementing the implementation mode, the APT chip can filter out the radio frequency signal power information which does not meet the standard, so that the radio frequency signal which does not meet the standard is not sent, the sending of error signals is reduced, and the signal sending accuracy of the communication circuit is improved.

204. And the APT chip performs grading operation on the radio frequency signal power information according to the power grading information to obtain grading power information.

In the embodiment of the invention, the power classification information is classification standard information which is stored in an APT chip and is used for classifying the radio frequency signal power information.

As an optional implementation manner, the step of the APT chip performing a step operation on the radio frequency signal power information based on the power step information to obtain step power information may include:

the APT chip performs grading operation on the radio frequency signal power information based on the power grading information to obtain grading power information, wherein the power grading information is automatically determined according to the current time.

By implementing the implementation mode, the APT chip can determine the power classification information according to the working time, wherein the determined power classification information can change the total classification quantity along with the time, so that the APT chip can automatically adjust the total classification quantity according to specific conditions, and the working efficiency of the APT chip is improved.

For example, when the operating time of the APT chip during operation is five to seven pm (school hours), the total number of stages in the power stage information adjusted by the APT chip is reduced, so that the matching accuracy is reduced when the APT chip performs matching, thereby improving the operating efficiency of the APT chip and reducing the power consumption of the APT chip.

205. And the APT chip is matched according to the grading power information to obtain the control voltage.

206. The APT chip outputs control voltage to a direct-current voltage interface of the TxM chip; the dc voltage interface of the TxM chip is used to receive control voltage and supply power to the TxM chip.

In step 203 to step 206, the APT chip may classify according to the power information included in the first radio frequency signal, and perform matching according to the classified power information obtained by classification to obtain a control voltage, and further send the control voltage to the TxM chip, so that the TxM chip performs subsequent operations.

207. TxM under the control of control voltage, the chip adjusts and filters the power of the first RF signal to obtain the second RF signal, and sends the second RF signal to the antenna module.

208. And the antenna module outputs a second radio frequency signal when receiving the second radio frequency signal.

In the method depicted in fig. 2, when the communication circuit (which may also be referred to as LTE B39 system) operates, the main control chip knows the first transmission signal information (including the power level of the first transmission signal), and controls the radio frequency transceiving chip to transmit an LTE B39 low-power radio frequency signal to the transmission matching circuit according to the first transmission signal information; meanwhile, the main control chip controls the APT chip to carry out classification operation on the radio-frequency signal power information in the first radio-frequency signal information, outputs APT bias voltage matched with the classification power information according to the classification power information obtained through the classification operation, and opens TxM chip, so that the TxM chip outputs final expected transmission power after receiving LTE B39 low-power radio-frequency signal input and the APT bias voltage sent by the transmission matching circuit. By implementing the implementation mode, the communication circuit for radio frequency transmission can be perfected, and the power of radio frequency signals is graded more finely, so that the signal transmission efficiency of the communication circuit is improved; the power amplification of the 4G radio frequency signals can be directly carried out through the TxM chip, power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is improved.

EXAMPLE III

Referring to fig. 3, fig. 3 is a schematic flow chart of another signal transmission method according to an embodiment of the disclosure. As shown in fig. 3, the signal transmission method is applied to a communication circuit of a wearable device, where the communication circuit includes a main control chip, a radio frequency transceiver chip, a transmission matching circuit, a radio frequency power management APT chip, a transmission module TxM chip, and an antenna module, and the method may include the following steps:

301. the main control chip sends first radio frequency signal information to the radio frequency transceiving chip and sends the first radio frequency signal information to the APT chip.

302. When receiving the first radio frequency signal information, the radio frequency transceiver chip sends a first radio frequency signal matched with the first radio frequency signal information to the transmission matching circuit, so that the transmission matching circuit sends the first radio frequency signal to the TxM chip.

303. When receiving the first radio frequency signal information, the APT chip acquires radio frequency signal power information included in the first radio frequency signal information.

304. And the APT chip performs grading operation on the radio frequency signal power information according to the power grading information to obtain grading power information.

305. And the APT chip is matched according to the grading power information to obtain the control voltage.

306. The APT chip outputs control voltage to a direct-current voltage interface of the TxM chip; the dc voltage interface of the TxM chip is used to receive control voltage and supply power to the TxM chip.

307. The TxM chip amplifies the power of the first radio frequency signal under the control of the control voltage to obtain an amplified radio frequency signal.

308. The TxM chip filters the amplified radio frequency signal through a low pass filter built in the TxM chip to obtain a second radio frequency signal.

309. TxM the chip sends the second RF signal to the antenna module.

310. And the antenna module outputs a second radio frequency signal when receiving the second radio frequency signal.

As an optional implementation manner, the communication circuit may further include a receiving filter and matching circuit, wherein when the antenna module receives an external signal, the antenna module sends the external signal to the TxM chip, so that the TxM chip transmits the external signal to the receiving filter and matching circuit, the receiving filter and matching circuit sends the external signal to the radio frequency transceiver chip, and the radio frequency transceiver chip sends the external signal to the main control chip, so that the main control chip can process the external signal.

By implementing the embodiment, the communication circuit can realize the function of receiving the external signal, thereby enriching specific use modes for the communication circuit and improving the practicability of the communication circuit.

In the embodiment of the invention, TxM chips selected by the communication circuit can support the amplification of LTE B39 signals and support the function of LTE B39APT bias voltage. On the other hand, the main control chip, the radio frequency transceiver chip and the APT chip are a set of chips and work cooperatively in a set, wherein all the chips need to support the function of LTE APT, and other conventional transmitting matching circuits, receiving filtering and matching circuits do not need to be specially designed.

In the method depicted in fig. 3, when the communication circuit (which may also be referred to as LTE B39 system) operates, the main control chip knows the first transmission signal information (including the power level of the first transmission signal), and controls the radio frequency transceiving chip to transmit an LTE B39 low-power radio frequency signal to the transmission matching circuit according to the first transmission signal information; meanwhile, the main control chip controls the APT chip to carry out grading operation on the radio frequency signal power information in the first radio frequency signal information, outputs APT bias voltage matched with the grading power information according to the grading power information obtained by the grading operation, and opens TxM chip, so that after the TxM chip receives LTE B39 low-power radio frequency signal input and the APT bias voltage sent by the emission matching circuit, power amplification and filtering are carried out on the LTE B39 low-power radio frequency signal, a second radio frequency signal is obtained, and a second radio frequency signal of the final expected emission power is output. By implementing the implementation mode, the communication circuit for radio frequency transmission can be perfected, and the power of radio frequency signals is graded more finely, so that the signal transmission efficiency of the communication circuit is improved; the specific functions of the TxM chip can be refined, so that the TxM chip can finish the operations of power amplification and filtering more accurately, and the accuracy of information in the second radio-frequency signal is improved; the power amplification of the 4G radio frequency signals can be directly carried out through the TxM chip, power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is improved.

Example four

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication circuit according to an embodiment of the disclosure. As shown in fig. 4, the communication circuit is applied in a wearable device, and may include a main control chip 401, a radio frequency transceiver chip 402, a radio frequency power management APT chip 403, a transmitting module TxM chip 404, and an antenna module 405, wherein,

the main control chip 401 is configured to send first radio frequency signal information to the radio frequency transceiver chip 402, and send the first radio frequency signal information to the APT chip 403.

In the embodiment of the present invention, the main control chip 401 may be a main control chip supporting LTE communication and APT (including LTE APT).

As an optional implementation manner, the main control chip 401 has a storage function, wherein before the main control chip 401 sends the first radio frequency signal information to the radio frequency transceiver chip 402 and sends the first radio frequency signal information to the APT chip 403, the main control chip 401 may further perform the following operations:

the main control chip 401 detects whether the calling information is received, and if the calling information is not received, the main control chip 401 repeatedly executes the step of detecting whether the calling information is received; if the main control chip 401 receives the calling information, the main control chip 401 acquires the transmitter information and the first radio frequency signal information included in the calling information, and records the transmitter information, wherein the transmitter information is one or all of a superior transmission hardware name or a software name triggering the operation of sending the calling information in the wearable device; the name of the superior transmission hardware is the name of the superior transmission hardware, and the superior transmission hardware can be the hardware for transmitting the call information.

As a further optional implementation manner, after the main control chip 401 obtains the transmitter information and the first radio frequency signal information included in the call information, and records the transmitter information, the main control chip 401 may further perform the following operations:

when the main control chip 401 detects that the total information amount of the recorded transmitter information exceeds the preset clearing total amount, the main control chip 401 clears the transmitter information in a preset clearing manner, wherein the preset clearing manner is a clearing manner of preferentially clearing the transmitter information with long storage time and determining that the remaining information is the information amount of the preset percentage of the preset clearing total amount.

As a further optional implementation manner, after the main control chip 401 acquires the transmitter information and the first radio frequency signal information included in the call information, and records the transmitter information, or when the main control chip 401 detects that the total information amount of the recorded transmitter information exceeds a preset cleaning total amount, the main control chip 401 may further perform the following operations after the main control chip 401 cleans the transmitter information in a preset cleaning manner:

when the main control chip 401 detects that the length of time that the transmitter information is not cleared is equal to or greater than the preset clearing length of time, the main control chip 401 clears the transmitter information in a timed clearing manner, wherein the timed clearing manner is a clearing manner for clearing the transmitter information with longer length of time according to the time proportion.

the main control chip 401 performs statistical sorting on stored transmitter information to obtain a transmitter information set including a software name, and detects whether there is transmitter information including the same software name for multiple times in the transmitter information set, if yes, the software name is uploaded to a software management center of the wearable device, so that the software management center marks software corresponding to the software name as signal high-frequency using software, and the software management center integrates calling information sent by the same software within a certain time by using an integration algorithm.

As an optional implementation manner, after the main control chip 401 sends the first radio frequency signal information to the radio frequency transceiver chip and sends the first radio frequency signal information to the APT chip, the main control chip 401 may further perform the following operations:

the main control chip 401 detects whether there is information of a signal sent by the antenna module 405, and if so, it is determined that the signal is successfully transmitted; if not, the main control chip 401 detects again whether there is information about the signal transmitted by the antenna module 405 after the preset duration threshold, and if not, records the information about the signal that is not successfully transmitted, and retransmits the first radio frequency signal information to the radio frequency transceiver chip and transmits the first radio frequency signal information to the APT chip.

The rf transceiver chip 402 is configured to send a first rf signal matched with the first rf signal information to the TxM chip 404 when receiving the first rf signal information sent by the main control chip 401.

As an alternative embodiment, when receiving the first rf signal information, the rf transceiver chip 402 may send a first rf signal matched with the first rf signal information to the TxM chip by:

when receiving the first radio frequency signal information, the radio frequency transceiver chip 402 acquires frequency information of the first radio frequency signal included in the first radio frequency signal information, and sends the first radio frequency signal matched with the frequency information to the TxM chip, where the frequency information of the first radio frequency signal may specifically be LTE B39 (1880 MHz-1920 MHz) frequency band information.

As a further optional implementation manner, when receiving the first radio frequency signal information, the radio frequency transceiver chip 402 may obtain frequency information of the first radio frequency signal included in the first radio frequency signal information, and send the first radio frequency signal matching the frequency information to the TxM chip 404 by:

when receiving the first radio frequency signal information, the radio frequency transceiver chip 402 acquires the frequency information of the first radio frequency signal included in the first radio frequency signal information, determines that the radio frequency low-power signal matched with the frequency information is the first radio frequency signal, and sends the first radio frequency signal to the TxM chip 404.

The APT chip 403 is configured to output a control voltage matched with the first radio frequency signal information to the TxM chip 404 when receiving the first radio frequency signal information sent by the main control chip 401.

In the embodiment of the present invention, the APT chip 403 may cooperate with the main control chip and the TxM chip 404 to implement dynamic debugging of the APT output voltage according to different LTE transmission powers, and is mainly characterized by being controlled and output, which is a key chip for implementing the APT function.

In the embodiment of the present invention, the APT technology is called Average Power Tracking, and the chinese name is Average Power Tracking technology, in the embodiment of the present invention, the APT chip 403 is a radio frequency Power amplifier Power Management chip (PA Power Management IC), the APT chip 403 may at least manage a radio frequency Power supply, and other functions that are not used by the APT chip 403 are not limited in the embodiment of the present invention.

In this embodiment of the present invention, the APT chip 403 may also replace a chip including an Envelope Tracking (ET) function, where a corresponding change and adjustment of an entire circuit are required when the chip is replaced, and details are not described in this embodiment of the present invention.

As an alternative embodiment, when receiving the first rf signal information, the APT chip 403 may output a control voltage matching the first rf signal information to the TxM chip 404 by:

when receiving the first radio frequency signal information, the APT chip 403 determines the work busy/idle degree of the current APT chip 403, where the work busy/idle degree may be obtained by calculating the number of times that the APT chip 403 works in a fixed time, and the busy/idle degree may be divided into three degrees, namely busy, medium, and idle, and when the APT chip 403 determines that the current busy/idle degree is busy, the APT chip 403 stops working in a preset time, and outputs a control voltage matched with the first radio frequency signal information to the TxM chip 404 after the preset time, where the preset time is a time of a fixed proportion of a time for outputting the control voltage.

TxM chip 404 is configured to perform power adjustment and filtering on the first radio frequency signal sent by the radio frequency transceiver chip 402 under the control of the control voltage output by the APT chip 403 to obtain a second radio frequency signal, and send the second radio frequency signal to the antenna module 405.

In the embodiment of the invention, the TxM chip can work together with the main control chip and the APT chip, wherein the TxM chip can amplify the LTE B39 radio frequency low-power signal under the bias voltage (PAVCC) of the power amplifier to obtain a high-power signal.

As an alternative implementation, the TxM chip 404 may perform power adjustment and filtering on the first rf signal under the control of the control voltage to obtain a second rf signal, and send the second rf signal to the antenna module by:

TxM chip 404 amplifies the power of the first rf signal under the control of the control voltage to obtain an amplified first rf signal (the power of the first rf signal is only in accordance with the communication standard of the communication industry), and TxM chip 404 filters the amplified first rf signal to obtain a second rf signal, and sends the second rf signal to antenna module 405.

As a further alternative, the TxM chip 404 may filter the amplified first rf signal by:

TxM the chip 404 adjusts the upper threshold of the low pass filter according to the frequency of the first RF signal and further performs the low pass filtering on the amplified first RF signal.

And the antenna module 405 is configured to output a second radio frequency signal when receiving TxM the second radio frequency signal sent by the chip 404.

In the embodiment of the present invention, the antenna module 405 is a component for transmitting and receiving a final LTE signal of the wearable device.

As an optional implementation manner, the communication circuit may further include a receiving filter and matching circuit, wherein when the antenna module receives an external signal, the antenna module 405 sends the external signal to the TxM chip 404, so that the TxM chip 404 transmits the external signal to the receiving filter and matching circuit, the receiving filter and matching circuit sends the external signal to the radio frequency transceiver chip 402, and the radio frequency transceiver chip 402 sends the external signal to the main control chip 401, so that the main control chip 401 can process the external signal.

Therefore, by implementing the implementation mode, the power of the 4G radio frequency signal can be directly filtered through the TxM chip, power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is further improved.

EXAMPLE five

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication circuit according to an embodiment of the disclosure. The communication circuit shown in fig. 5 is optimized from the communication circuit shown in fig. 4. Compared with the communication circuit shown in fig. 4, when the APT chip 403 shown in fig. 5 receives the first radio frequency signal information sent by the main control chip 401, a manner of outputting the control voltage matched with the first radio frequency signal information to the TxM chip 404 is specifically as follows:

when receiving the first radio frequency signal information sent by the main control chip 401, the APT chip 403 acquires radio frequency signal power information included in the first radio frequency signal information.

In the embodiment of the present invention, the APT chip 403 may cooperate with the main control chip 401, the radio frequency transceiver chip 402, and the TXM chip 404, thereby performing two functions of transmitting an LTE radio frequency low-power signal and receiving an LTE radio frequency signal.

As an optional implementation manner, after the APT chip 403 acquires the radio-frequency signal power information included in the first radio-frequency signal information when receiving the first radio-frequency signal information, the APT chip may further perform the following operations:

the APT chip 403 determines whether the power information of the radio frequency signal does not meet the power information of the transmission standard according to the power information of the radio frequency signal, if so, the APT chip 403 filters the power information of the radio frequency signal and stops executing the subsequent steps to wait for the next transmission of the power information of the radio frequency signal.

The APT chip 403 performs a classification operation on the radio frequency signal power information based on the power classification information to obtain classification power information.

In the embodiment of the present invention, the power classification information is classification standard information stored in the APT chip 403, and is information for classifying the radio frequency signal power information.

As an optional implementation manner, the APT chip 403 performs a classification operation on the radio frequency signal power information according to the power classification information, and a manner of obtaining the classification power information may be:

the APT chip 403 performs a classification operation on the radio frequency signal power information based on the power classification information to obtain classification power information, wherein the power classification information is automatically determined according to the current time.

By implementing this embodiment, the APT chip 403 may determine the power classification information according to the working time, where the determined power classification information may change the total number of the classifications with time, so that the APT chip 403 may automatically adjust the total number of the classifications according to specific situations, thereby improving the working efficiency of the APT chip 403.

The APT chip 403 performs matching based on the classification power information to obtain a control voltage.

The APT chip 403 outputs a control voltage to TxM chip 404.

As an optional implementation manner, in the communication circuit shown in fig. 5, a manner of outputting the control voltage to the TxM chip 404 by the APT chip 403 is specifically as follows:

the APT chip 403 outputs a control voltage to the dc voltage interface of the TxM chip 404; the direct-current voltage interface of the TxM chip 404 is used for receiving a control voltage and supplying power to the TxM chip 404.

As an alternative implementation, in the communication circuit shown in fig. 5, the communication circuit further includes a transmission matching circuit 406, wherein,

the rf transceiver chip 402 is specifically configured to send, when receiving the first rf signal information sent by the main control chip 401, a first rf signal matched with the first rf signal information to the transmission matching circuit 406, so that the transmission matching circuit 406 sends the first rf signal to the TxM chip 404.

As an optional implementation manner, in the communication circuit shown in fig. 5, the manner that the TxM chip 404 performs power adjustment and filtering on the first radio frequency signal under the control of the control voltage output by the APT chip 403 to obtain a second radio frequency signal, and sends the second radio frequency signal to the antenna module specifically is:

the TxM chip 404 performs power amplification on the first radio frequency signal under the control of the control voltage output by the APT chip 403, so as to obtain an amplified radio frequency signal.

TxM the chip 404 filters the amplified rf signal through a low pass filter built in the chip TxM to obtain a second rf signal.

TxM the chip 404 sends a second RF signal to the antenna module 405.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication circuit according to an embodiment of the disclosure. As shown in fig. 6, the communication circuit further includes a receiving filter and matching circuit 407, and using the communication circuit shown in fig. 6, the communication circuit can receive an external signal through the antenna module 405, transmit the external signal to the chip TxM of the transmitting module TxM, transmit the external signal to the receiving filter and matching circuit 407 through the chip TxM 404, and send the processed signal to the main control chip 401 through the radio frequency transceiver chip 402, so that the wearable device processes the processed signal.

Therefore, the implementation of the implementation mode can perfect the communication circuit for radio frequency transmission and more finely classify the power of the radio frequency signal, thereby improving the signal transmission efficiency of the communication circuit; the specific functions of the TxM chip can be refined, so that the TxM chip can finish the operations of power amplification and filtering more accurately, and the accuracy of information in the second radio-frequency signal is improved; the power amplification of the 4G radio frequency signals can be directly carried out through the TxM chip, power loss caused by two transmission circuits in the traditional 4G radio frequency signal output process is avoided, the overall signal transmission power consumption of the wearable device is reduced, and the cruising ability of the wearable device is improved.

EXAMPLE six

Referring to fig. 7, fig. 7 is a schematic structural diagram of another communication circuit according to an embodiment of the disclosure. As shown in fig. 7, the communication circuit may include:

a memory 701 in which executable program code is stored;

a processor 702 coupled to the memory 701;

the processor 702 calls the executable program code stored in the memory 701 to execute any one of the signal transmission methods in fig. 1 to 3.

An embodiment of the present invention discloses a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute any one of the signal transmission methods of fig. 1 to 3.

It should be appreciated that reference throughout this specification to "an embodiment of the present invention" or "as an alternative implementation" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "an embodiment of the invention" or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are exemplary and alternative embodiments, and that the acts and modules illustrated are not required in order to practice the invention.

The signal transmission method and the communication circuit disclosed in the embodiments of the present invention are described in detail above, and the principle and the embodiments of the present invention are explained in detail herein by applying specific examples, and the description of the embodiments above is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A signal transmission method is applied to a communication circuit of a wearable device, wherein the communication circuit comprises a main control chip, a radio frequency transceiver chip, a radio frequency power management (APT) chip, a transmitting module TxM chip and an antenna module, and the method comprises the following steps:

the antenna module outputs the second radio frequency signal when receiving the second radio frequency signal;

before the main control chip sends the first radio frequency signal information to the radio frequency transceiving chip, the method further comprises:

the main control chip detects whether the calling information is received or not, if the main control chip receives the calling information, the transmitter information and the first radio frequency signal information which are included in the calling information are obtained, and the transmitter information is recorded, wherein the transmitter information is one or all of the name of superior transmission hardware or the name of software which triggers the operation of sending the calling information in the wearable device; the name of the superior transmission hardware is the name of the superior transmission hardware, and the superior transmission hardware is the hardware for transmitting the call information.

2. The method of claim 1, wherein the APT chip outputting a control voltage matching the first rf signal information to the TxM chip when receiving the first rf signal information comprises:

the APT chip outputs the control voltage to the TxM chip.

3. The method of claim 2, wherein the APT chip outputting the control voltage to the TxM chip comprises:

4. The method of claim 3, wherein the communication circuit further comprises a transmit matching circuit;

5. The method according to any one of claims 1 to 4, wherein the TxM chip performs power adjustment and filtering on the first RF signal under the control of the control voltage to obtain a second RF signal, and sends the second RF signal to the antenna module, including:

the TxM chip sends the second radio frequency signal to the antenna module.

6. A communication circuit is applied to a wearable device and comprises a main control chip, a radio frequency transceiver chip, a radio frequency power management (APT) chip, a transmitting module TxM chip and an antenna module,

the antenna module is used for outputting the second radio frequency signal when receiving the second radio frequency signal;

the main control chip is further used for detecting whether calling information is received or not before the main control chip sends the first radio frequency signal information to the radio frequency transceiving chip, if the main control chip receives the calling information, obtaining the transmitter information and the first radio frequency signal information which are included in the calling information, and recording the transmitter information, wherein the transmitter information is one or all of a superior transmission hardware name or a software name which triggers the operation of sending the calling information in the wearable device; the name of the superior transmission hardware is the name of the superior transmission hardware, and the superior transmission hardware is the hardware for transmitting the call information.

7. The communication circuit according to claim 6, wherein when the APT chip receives the first rf signal information, outputting a control voltage matched to the first rf signal information to the TxM chip is specifically:

the APT chip outputs the control voltage to the TxM chip.

8. The communication circuit according to claim 7, wherein the manner of outputting the control voltage to the TxM chip by the APT chip is specifically as follows:

9. The communication circuit of claim 8, further comprising a transmit matching circuit;

10. The communication circuit according to any one of claims 6 to 9, wherein the TxM chip performs power adjustment and filtering on the first rf signal under the control of the control voltage to obtain a second rf signal, and the manner of sending the second rf signal to the antenna module is specifically:

the TxM chip sends the second radio frequency signal to the antenna module.