CN110166074B - Radio frequency circuit, electronic equipment and control method of radio frequency circuit - Google Patents
Radio frequency circuit, electronic equipment and control method of radio frequency circuit Download PDFInfo
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- CN110166074B CN110166074B CN201910516913.1A CN201910516913A CN110166074B CN 110166074 B CN110166074 B CN 110166074B CN 201910516913 A CN201910516913 A CN 201910516913A CN 110166074 B CN110166074 B CN 110166074B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The embodiment of the application provides a radio frequency circuit, electronic equipment and a control method of the radio frequency circuit, wherein the radio frequency circuit comprises a first modem, a second modem, a first transmitting channel, a first receiving channel, a second transmitting channel and a second receiving channel; connecting a first transmitting channel and a first receiving channel with a first modem for transmitting and receiving a 4G signal of a first identification, connecting a second transmitting channel and a second receiving channel with a second modem for transmitting and receiving a 5G signal of a second identification, and stopping receiving the signal through the first receiving channel and the second receiving channel when the signal is transmitted through the first transmitting channel or the second transmitting channel; when receiving signals through the first receiving channel or the second receiving channel, stopping transmitting signals through the first transmitting channel and the second transmitting channel. The signal transmitted by the transmitting channel can be prevented from interfering the receiving signal of the receiving channel, and the interference of the transmitting channel to the receiving channel under the condition of dual-card dual-standby can be effectively avoided.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a radio frequency circuit, an electronic device, and a control method of the radio frequency circuit.
Background
With The rapid development of Communication Technology, The 4th Generation Mobile Communication Technology (4G) has gradually become difficult to meet The user's requirements, especially The user's requirements for higher network speed and lower network delay. With this, The fifth Generation Mobile Communication Technology (5G) is gradually emerging.
Currently, two Subscriber identity modules (SIM cards) are generally provided in an electronic device such as a smart phone. In order to enable the electronic device to simultaneously support the 4G network and the 5G network through the two SIM cards, the two SIM cards are likely to cause mutual interference when operating simultaneously.
Disclosure of Invention
The embodiment of the application provides a radio frequency circuit, electronic equipment and a control method of the radio frequency circuit, which can reduce mutual interference of two SIM cards during working.
An embodiment of the present application provides a radio frequency circuit, which includes:
the first modem is used for processing the 4G signals;
the second modem is used for processing the 5G signal;
the first transmitting channel is connected with the first modem and is used for transmitting the first identified 4G signal transmitted by the first modem to a first antenna;
a first receiving channel connected with the first modem and used for transmitting the first identified 4G signal received by a first antenna to the first modem;
the second transmitting channel is connected with the second modem and is used for transmitting the 5G signal of the second identifier sent by the second modem to a second antenna;
a second receiving channel connected to the second modem and configured to transmit the second identified 5G signal received by a second antenna to the second modem;
stopping receiving signals through the first and second receive channels when transmitting signals through the first transmit channel or the second transmit channel;
stopping transmitting signals through the first transmit channel and the second transmit channel when receiving signals through the first receive channel or the second receive channel.
The embodiment of the application further provides electronic equipment, the electronic equipment comprises a shell and a radio frequency circuit, the radio frequency circuit is as above, and the radio frequency circuit is arranged in the shell.
The embodiment of the present application further provides a radio frequency circuit control method, where the radio frequency circuit includes a first modem, a second modem, a first transmit channel, a first receive channel, a second transmit channel, and a second receive channel, and the first modem is configured to process a 4G signal; the second modem is used for processing a 5G signal; the first transmitting channel is connected with the first modem and is used for transmitting the first identified 4G signal transmitted by the first modem to a first antenna; the first receiving channel is connected with the first modem and is used for transmitting the first identified 4G signal received by the first antenna to the first modem; the second transmitting channel is connected with the second modem and is used for transmitting the 5G signal of the second identifier sent by the second modem to a second antenna; the second receiving channel is connected with the second modem and is used for transmitting the second identified 5G signal received by the second antenna to the second modem; the method comprises the following steps:
stopping receiving signals through the first and second receive channels when transmitting signals through the first transmit channel or the second transmit channel;
stopping transmitting signals through the first transmit channel and the second transmit channel when receiving signals through the first receive channel or the second receive channel.
According to the radio frequency circuit, the electronic device and the control method of the radio frequency circuit, when the signal is transmitted through the first transmitting channel or the second transmitting channel, the signal is stopped to be received through the first receiving channel and the second receiving channel; stopping transmitting signals through the first transmit channel and the second transmit channel when receiving signals through the first receive channel or the second receive channel. When the first transmitting channel and the second transmitting channel transmit signals, the first receiving channel and the second receiving channel stop receiving the signals temporarily, and similarly, when the first receiving channel and the second receiving channel receive the signals, the first transmitting channel and the second transmitting channel stop transmitting the signals temporarily, so that the signals transmitted by the transmitting channels can be prevented from interfering the receiving channels to receive the signals, and the interference of the transmitting channels to the receiving channels under the condition of dual-card dual-standby can be effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
FIG. 2 is a cross-sectional view of the electronic device shown in FIG. 1 taken along the direction P1-P1.
Fig. 3 is a schematic diagram of a first structure of a radio frequency circuit according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a second structure of the rf circuit according to the embodiment of the present disclosure.
Fig. 5 is a schematic diagram of a third structure of a radio frequency circuit according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a fourth structure of a radio frequency circuit according to an embodiment of the present application.
Fig. 7 is a fifth structural schematic diagram of a radio frequency circuit according to an embodiment of the present application.
Fig. 8 is a flowchart illustrating a radio frequency circuit control method according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an AR (Augmented Reality) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and fig. 2 is a cross-sectional view of the electronic device shown in fig. 1 along a direction P1-P1.
The electronic device 100 includes a display 101, a cover 102, a bezel 103, a circuit board 104, a battery 105, a back cover 106, a first SIM card 107, and a second SIM card 108.
The display screen 101 is mounted on the middle frame 103 to form a display surface of the electronic apparatus 100 for displaying information such as images, text, and the like. The Display screen 101 may include a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen.
The cover plate 102 is mounted on the middle frame 103, and the cover plate 102 covers the display screen 101 to protect the display screen 101 from being scratched or damaged by water. The cover 102 may be a transparent glass cover, so that a user can see the contents displayed on the display 101 through the cover 102. It is understood, however, that the cover plate 102 may be a glass cover plate of sapphire material.
The middle frame 103 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame 103 is used for providing a supporting function for the electronic elements or functional components in the electronic device 100, so as to mount the electronic elements or functional components in the electronic device 100 together.
The middle frame 103 and the rear cover 106 may together form a housing of the electronic device 100, for accommodating or mounting electronic elements, functional components, and the like of the electronic device 100. For example, the display screen 101 may be mounted on the housing. In addition, functional components such as a camera, a receiver, a circuit board, and a battery of the electronic apparatus 100 may be mounted on the center frame 103 to be fixed. It is understood that the material of the middle frame 103 may include metal or plastic or composite material.
The circuit board 104 is mounted inside a housing formed by the middle frame 103 and the rear cover 106 together. For example, the circuit board 104 may be mounted on the middle frame 103. The circuit board 104 may be a motherboard of the electronic device 100. Wherein, the circuit board 104 is provided with a radio frequency circuit. The radio frequency circuitry is used to enable wireless communication between the electronic device 100 and a base station or other electronic device. The radio frequency circuit will be described in detail below. In addition, one or more of a microphone, a speaker, a receiver, an earphone interface, a camera, an acceleration sensor, a gyroscope, a processor, and other functional components may be integrated on the circuit board 104. Meanwhile, the display screen 101 may be electrically connected to the circuit board 104 to control display of the display screen 101 by a processor on the circuit board 104.
The battery 105 is mounted inside a casing formed by the middle frame 103 and the rear cover 106 together. For example, the battery 105 may be mounted on the middle frame 103. Meanwhile, the battery 105 is electrically connected to the circuit board 104 to enable the battery 105 to power the electronic device 100. The circuit board 104 may be provided thereon with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 105 to the various electronic components in the electronic device 100.
The rear cover 106 may be integrally formed. In the molding process of the rear cover 106, a rear camera hole or the like may be formed in the rear cover 106.
The first SIM card 107 may be mounted on the bezel 103 or on the circuit board 104 inside the electronic device. The first SIM card 107 may serve as an information storage for storing identification information of the user, such as a telephone number for representing the identity of the user. In addition, the first SIM card 107 may also be used to store personal information of the user, such as a key used to encrypt voice contents at the time of a voice call, a phone book of the user, and the like. Among them, the SIM card is also called a subscriber identity card, a smart card, and the like.
It should be noted that, after the first SIM card 107 is installed on the electronic device 100, the electronic device 100 can communicate with a base station or other electronic devices through the information stored on the first SIM card 107.
A second SIM card 108 is also mounted on the middle frame 103 or on the circuit board 104 inside the electronic device. The second SIM card may also serve as an information storage for storing identification information of the user, personal information of the user, and the like.
Wherein the subscriber identity information stored on the second SIM card 108 is different from the subscriber identity information stored on the first SIM card 107. For example, a first SIM card 107 stores first identification information of the user, such as a first telephone number for indicating the identity of the user, and a second SIM card 108 stores second identification information of the user, such as a second telephone number for indicating the identity of the user. In addition, the user personal information stored on the second SIM card 108 may be the same as or partially the same as or different from the user personal information stored on the first SIM card 107.
It should be noted that, after the second SIM card 108 is installed on the electronic device 100, the electronic device 100 can communicate with a base station or other electronic devices through the information stored on the second SIM card 108.
In the embodiment of the present application, the circuit board 104 is provided with a radio frequency circuit 200. The radio frequency circuit 200 is used to enable wireless communication between the electronic device 100 and a base station or other electronic devices.
Referring to fig. 3, fig. 3 is a schematic diagram of a first structure of a radio frequency circuit according to an embodiment of the present disclosure. The radio frequency circuit 200 comprises a processing module 201, a first modem 202, a second modem 203, a first receive channel 204, a first transmit channel 205, a second transmit channel 207, and a second receive channel 206.
The first modem 202 is used for processing 4G signals. The second modem 203 is used for processing the 5G signal.
The first transmitting channel 205 is connected to the first modem 202 and is used for transmitting the first identified 4G signal transmitted by the first modem 202 to the first antenna 2081. The first receiving channel 204 is connected to the first modem 202, and is configured to transmit the first identified 4G signal received by the first antenna 2081 to the first modem 202.
The second transmitting channel 207 is connected to the second modem 203 and is used for transmitting the second identified 5G signal transmitted by the second modem 203 to the second antenna 2082. The second receiving channel 206 is connected to the second modem 203 and is configured to transmit the second identified 5G signal received by the second antenna 2082 to the second modem 203.
The processing module 201 is configured to stop receiving signals through the first receiving channel 204 and the second receiving channel 206 when transmitting signals through the first transmitting channel 205 or the second transmitting channel 207; the processing module 201 is configured to stop transmitting signals via the first transmit channel 205 and the second transmit channel 207 when receiving signals via the first receive channel 204 or the second receive channel 206.
When the first transmitting channel 205 and the second transmitting channel 207 transmit signals, the first receiving channel 204 and the second receiving channel 206 temporarily stop receiving signals, and similarly, when the first receiving channel 204 and the second receiving channel 206 receive signals, the first transmitting channel 205 and the second transmitting channel 207 temporarily stop transmitting signals, which can prevent the signals transmitted by the transmitting channels from interfering with the receiving channels to receive signals, and effectively avoid the interference of the transmitting channels to the receiving channels under the dual-card dual-standby condition.
In the related art, for a mode that 5G and 4G are separated by Modem (debug demodulator) processing, two modems (4G Modem and 5G Modem) are completely independent, and cannot perform interactive communication, and the two modems cannot be controlled to work through front ends of the two modems. Interference conflicts cannot be avoided when the dual cards work simultaneously, especially when the operating frequencies of the dual cards are close. For example, when the dual cards are operating in the same frequency band or the similar frequency band (for example, the dual cards are respectively in 5G N41 and 4G B41), if the card 1 transmits and the card 2 listens for the paging message, the high-strength signal transmitted by the card 1 will enter the listening channel of the card 2, and damage the device of the receiving channel corresponding to the card 2, or vice versa. The rf circuit 200 of this embodiment can prevent the signal of one card from being affected when the signal of the other card is transmitted, and protect the devices of the receiving channel. The card 1 can be understood as a first identification and the card 2 as a second identification.
It should be noted that the first identifier or the second identifier may be understood as user identification, such as phone number stored in the SIM card. The first identifier or the second identifier may also be information such as a phone number directly burned into the electronic device, that is, a module existing inside the electronic device without depending on the SIM card, where the module has the main or all functions of the SIM card. For ease of understanding, in some embodiments, the first identity may be understood as a first SIM card 107 and the second identity may be understood as a second SIM card 108.
The first receiving channel 204 includes a first Low Noise Amplifier 2041 (LNA) and a first switch 2042, an input end of the first switch 2042 is connected to the first antenna 2081, and an output end of the first switch 2042 is used for connecting the first modem 202 or ground through the first Low Noise Amplifier 2041.
When the second transmitting channel 207 transmits the second identified 5G signal to the second antenna 2082 and transmits the second identified 5G signal, the control terminal of the first switch 2042 controls the output terminal of the first switch 2042 to be grounded. The second transmission channel 207 may further include a second power amplifier 2071, and the second modem 203 is connected to the second antenna 2082 through the second power amplifier 2071.
The second receive path 206 includes a second low noise amplifier 2061 and a second switch 2062, an input terminal of the second switch 2062 is connected to the second antenna 2082, and an output terminal of the second switch 2062 is used for connecting the second modem 203 or the ground via the second low noise amplifier 2061.
When the first transmit channel 205 transmits the first identified 4G signal to the first antenna 2081, the output terminal of the second switch 2062 is controlled to be grounded through the control terminal of the second switch 2062. The first transmit channel 205 includes a first power amplifier 2051, and the first modem 202 is connected to the first antenna 2081 through the first power amplifier 2051.
When the second transmitting channel 207 transmits the second identified 5G signal to the second antenna 2082, the first antenna 2081 is grounded through the first switch 2042. When the first transmit channel 205 transmits the first identified 4G signal to the first antenna 2081 and transmits it, the second antenna 2082 is grounded through the second switch 2062.
Specifically, the first control terminal 4G _ Ctl of the first modem 202 is connected to the control terminal of the first switch 2042; when the first modem 202 transmits the first identified 4G signal to the first antenna 2081 through the first transmit channel 205, the first control terminal 4G _ Ctl sends a control command to the control terminal of the second switch 2062, so as to control the output terminal of the second switch 2062 to be grounded.
The second control terminal 5G _ Ctl of the second modem 203 is connected to the control terminal of the first switch 2042; when the second modem 203 transmits the 5G signal of the second identifier to the second antenna 2082 through the second transmitting channel 207, the second control terminal 5G _ Ctl sends a control command to the control terminal of the first switch 2042, so as to control the output terminal of the first switch 2042 to be grounded.
All of the first and second switches may also be controlled by one switch controller 209. The first control terminal 4G _ Ctl is connected to the first input terminal B of the switch controller 209, the second control terminal 5G _ Ctl is connected to the second input terminal a of the switch controller 209, the output terminal Y of the switch controller 209 is connected to the control terminal of the first switch 2042 and the control terminal of the second switch 2062, and the switch controller 209 is configured to control the output terminal of the first switch 2042 and the output terminal of the second switch 2062 to be grounded when the first control terminal 4G _ Ctl and/or the second control terminal 5G _ Ctl send a control instruction.
All switches (including the first switch 2042 and the second switch 2062) are controlled by one switch controller 209, and the first switch 2042 and the second switch 2062 may be the same switch or different switches. The switch controller 209 may be an or gate controller, or may be another controller. For example, when a 4G modem is transmitting, the first control of the 4G modem outputs a high signal at 4G _ Ctl, and when a 5G modem is transmitting, the second control of the 5G modem outputs a high signal at 5G _ Ctl, and otherwise outputs a low signal. When any signal outputs high level, the control switch controller 209 drives all switches to ground, and protects the receiving path.
An output terminal and an input terminal of the second modem 203 are connected to the second antenna 2082 through a first selection switch 2064. Simultaneous reception and transmission may be achieved by one second antenna 2082, or time-division reception and transmission may be achieved.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a second structure of a radio frequency circuit according to an embodiment of the present disclosure. The output terminal of the first selection switch 2064 may be directly connected to a second antenna 2082. The two second antennas 2082 may also be connected to the other input of the second modem 203 through a second selection switch 2069, so that one output and two inputs of the second modem 203 are selected to communicate with the two second antennas 2082 as desired. It will also be appreciated that the input of the second modem 203, which is connected to the same first selection switch 2061 as the output of the second modem 203, may select another second antenna 2082 to operate.
Referring to fig. 5, fig. 5 is a schematic diagram of a third structure of the rf circuit according to the embodiment of the present disclosure. In some other embodiments, the first receiving channel 204 includes a first low noise amplifier 2041 and a first switch 2042, an input of the first low noise amplifier 2041 is connected to the first antenna 2081, an output of the first low noise amplifier 2041 is connected to the first modem 202, an input of the first low noise amplifier 2041 is connected to an input of the first switch 2042, and a control terminal of the first switch 2042 controls whether an output of the switch is grounded.
When the second transmitting channel 207 transmits the second identified 5G signal to the second antenna 2082, the control end of the first switch 2042 controls the output end of the first switch 2042 to be grounded.
The second receiving channel 206 includes a second low noise amplifier 2061 and a second switch 2062, an input terminal of the second low noise amplifier 2061 is connected to the second antenna 2082, an output terminal of the second low noise amplifier 2061 is connected to the second modem 203, an input terminal of the second low noise amplifier 2061 is connected to an input terminal of the second switch 2062, and a control terminal of the second switch 2062 controls whether an output terminal of the second switch 2062 is grounded.
When the first transmit channel 205 transmits the first identified 4G signal to the first antenna 2081, the output terminal of the second switch 2062 is controlled to be grounded through the control terminal of the second switch 2062.
The output ends of the first switch 2042 and the second switch 2062 may be selectively grounded or suspended, when the output ends of the first switch 2042 and the second switch 2062 are grounded, the input ends of the first antenna 2081, the second antenna 2082, the first low noise amplifier 2041 and the second low noise amplifier 2061 are all grounded, which is equivalent to that the first receiving channel 204 and the second receiving channel 206 stop working, and signals received by the first antenna 2081 and the second antenna 2082 are all led to the ground, so as to protect the first low noise amplifier 2041 and the second low noise amplifier 2061.
Referring to fig. 6, fig. 6 is a schematic diagram of a fourth structure of the rf circuit according to the embodiment of the present disclosure. For the non-completely separate schemes, for example, when the transmit channel and part of the receive channels are combined in a module, the transmit will be turned off when the switch controller 209 in the above embodiment is grounded, and the 4G and 5G transmissions cannot be performed simultaneously. A new switch control unit 210 may be added and the switch position within the module changed. The high level is enabled only when 4G is on and 5G is off, so that the module enters a protection state and is normally switched on under other scenes. This logic is applicable to all scenarios where the transmit receive cannot control the protection separately, and is not limited to the embodiment shown in fig. 5. Specific control logic can be seen in table 1:
referring to fig. 7, fig. 7 is a schematic diagram of a fifth structure of the rf circuit according to the embodiment of the present disclosure. The radio frequency circuit may also control the receive channel and the transmit channel through the transmit control module 210. Specifically, the rf circuit further includes a transmission control module 210, and the transmission control module 210 monitors the transceiving states of the first modem 202 and the second modem 203.
The transmission control module 210 is configured to acquire an operating state of the second modem 203 when it is monitored that the first modem 202 is ready to transmit the 4G signal of the first identifier; if the second modem 203 is in the paging state of the second identifier, the first modem 202 is controlled to transmit the 4G signal after waiting for the second modem 203 to complete paging.
The transmission control module 210 is further configured to acquire the working state of the first modem 202 when it is monitored that the second modem 203 is ready to transmit the 5G signal of the second identifier; if the first modem 202 is in the paging state of the first identifier, the second modem 203 is controlled to transmit the 5G signal after waiting for the first modem 202 to complete paging.
The transmission control module 210 may monitor the transceiving states of the 5Gmodem and the 4Gmodem in real time, monitor whether one SIM card is paging when the other SIM card is ready for 5G transmission, suspend the 5G card temporarily if the paging is done, and release the 5G card for continuing transmission after the 4G paging is completed. If one SIM card is ready for 4G transmission, monitoring whether the other card is a paging card, if so, temporarily suspending the 4G card, and releasing 4G for continuous transmission after 5G paging is finished.
The first modem 202 may be connected to the first low noise amplifier 2041 and the first power amplifier 2051 through the first radio frequency transceiver 2021. The second modem 203 may be connected to the second low noise amplifier 2061 and the second power amplifier 2071 through the second radio frequency transceiver 2031. The first and second radio frequency transceivers 2021 and 2031 may be used to process the transceived signals. It should be noted that the first rf transceiver 2021 and the second rf transceiver 2031 may be added correspondingly in the above-mentioned other embodiments.
It should be noted that, at least two first antennas 2081 are disposed corresponding to the first modem 202, and each first antenna has at least one receiving channel and one transmitting channel. At least four second antennas 2082 are disposed corresponding to the second modem 203 and respectively have at least one transmit path and four receive paths.
The rf circuit 200 may further include a baseband circuit, and the processing module 201 is connected to the second modem 203 and the first modem 202 through the baseband circuit. The baseband circuit is used for processing communication data of the radio frequency circuit 200 and controlling the working state of each device in the radio frequency circuit 200 according to the interaction information with the base station or the network server. It is understood that the baseband circuit may be integrated into the processing module 201 of the electronic device 100, or may be independent of a separate processing circuit or processing chip. The processing module 201 may be a control chip of the radio frequency circuit 200, and may also be a control chip of an electronic device.
The first modem 202 is connected to the baseband circuitry. The first modem 202 is used for processing 4G radio frequency signals. For example, the first modem 202 may modulate upstream signals passing through the first modem 202 and demodulate downstream signals passing through the first modem 202.
The second modem 203 is connected to the baseband circuit. The second modem 203 is used for processing the 5G radio frequency signal. The second modem 203 may modulate upstream signals passing through the second modem 203 and demodulate downstream signals passing through the second modem 203.
It is understood that the uplink signal refers to a radio frequency signal transmitted by the radio frequency circuit 200 to the outside through the antenna, and the downlink signal refers to a radio frequency signal received by the radio frequency circuit 200 from the outside through the antenna.
It is particularly pointed out that it is currently in the construction and development stage of 5G networks. 5G networks have specificity with respect to 4G networks.
Depending on the requirements of the communication protocol, a complete 4G network communication link requires at least 2 antennas to implement, and a complete 5G network communication link requires at least 4 antennas to implement. In a communication link formed by at least 4 antennas of a 5G network, it is necessary to maintain one antenna to implement SRS (Sounding Reference Signal) communication between an electronic device and a base station. That is, in a 5G network communication link between an electronic device and a base station, it is necessary to keep an antenna transmitting SRS signals to the base station, and the base station evaluates the quality of downlink channels between the base station and the electronic device through the received SRS signals, thereby facilitating the resource allocation of the downlink channels between the base station and the electronic device. However, according to the requirements of the communication protocol, the SRS signal needs to be switched between at least 4 antennas of the 5G network communication link. That is, the electronic device sequentially transmits the SRS signal to the base station in a time division manner through each of the at least 4 antennas of the 5G network communication link. The SRS signal does not carry communication content of communication between the user and other users, and is only used for the base station to evaluate the quality of the downlink channel.
Therefore, in the radio frequency circuit 200, the SRS signals can be switched between the at least four second antennas 2082. That is, the SRS signal is transmitted to the base station in a time division manner sequentially through the four second antennas 2082.
It should be noted that the first selection switch 2064 and the second selection switch 2069 in the radio frequency circuit shown in fig. 4 can be selectively applied to the radio frequency circuit in other embodiments according to the needs. For example, in the rf circuit shown in fig. 6, a second selection switch 2069 may be added between the first selection switch 2064 and the second antenna 2082, two input terminals of the second selection switch 2092 are respectively connected to the output terminal of the first selection switch 2064 and the input terminal of one second switch 2062, and two output terminals of the second selection switch 2092 are connected to two second antennas 2082.
In addition, the second modem 203 may have 4 second transmission channels 207 (only one second transmission channel 207 is shown), or the output of the second power amplifier 2071 may be connected to 4 second antennas 2082 through a switch for transmitting SRS signals.
Referring to fig. 8, fig. 8 is a schematic flowchart of a radio frequency circuit control method according to an embodiment of the present disclosure. The radio frequency circuit control method is applied to the radio frequency circuit in the corresponding embodiment, the radio frequency circuit comprises a first modem, a second modem, a first transmitting channel, a first receiving channel, a second transmitting channel and a second receiving channel, and the first modem is used for processing 4G signals; the second modem is used for processing the 5G signal; the first transmitting channel is connected with the first modem and is used for transmitting the first identified 4G signal transmitted by the first modem to the first antenna; the first receiving channel is connected with the first modem and is used for transmitting the first identified 4G signal received by the first antenna to the first modem; the second transmitting channel is connected with the second modem and is used for transmitting the 5G signal of the second identifier sent by the second modem to the second antenna; the second receiving channel is connected to the second modem and is configured to transmit the second identified 5G signal received by the second antenna to the second modem. The radio frequency circuit control method specifically comprises the following steps:
301, obtaining the working states of the first transmitting channel, the second transmitting channel, the first receiving channel and the second receiving channel.
And 302, stopping receiving the signal through the first receiving channel and the second receiving channel when the signal is transmitted through the first transmitting channel or the second transmitting channel.
303, stopping transmitting signals through the first transmitting channel and the second transmitting channel when receiving signals through the first receiving channel or the second receiving channel.
In the related art, for a mode that 5G and 4G are separated by Modem (debug demodulator) processing, two modems (4G Modem and 5G Modem) are completely independent, and cannot perform interactive communication, and the two modems cannot be controlled to work through front ends of the two modems. Interference conflicts cannot be avoided when the dual cards work simultaneously, especially when the operating frequencies of the dual cards are close. For example, when the dual cards are operating in the same frequency band or the similar frequency band (for example, the dual cards are respectively in 5G N41 and 4G B41), if the card 1 transmits and the card 2 listens for the paging message, the high-strength signal transmitted by the card 1 will enter the listening channel of the card 2, and damage the device of the receiving channel corresponding to the card 2, or vice versa. The rf circuit 200 of this embodiment can prevent the signal of one card from being affected when the signal of the other card is transmitted, and protect the devices of the receiving channel. The card 1 can be understood as a first identification and the card 2 as a second identification.
It should be noted that the first identifier or the second identifier may be understood as user identification, such as phone number stored in the SIM card. The first identifier or the second identifier may also be information such as a phone number directly burned into the electronic device, that is, a module existing inside the electronic device without depending on the SIM card, where the module has the main or all functions of the SIM card. For ease of understanding, in some embodiments, the first identity may be understood as a first SIM card and the second identity may be understood as a second SIM card.
The first receiving channel comprises a first low noise amplifier and a first switch, the input end of the first switch is connected with the first antenna, and the output end of the first switch is used for being connected with the first modem or grounded through the first low noise amplifier; the second receiving channel comprises a second low noise amplifier and a second switch, wherein the input end of the second switch is connected with the second antenna, and the output end of the second switch is used for being connected with the second modem or the ground through the second low noise amplifier. When transmitting the signal through the first transmitting channel or the second transmitting channel, stopping receiving the signal through the first receiving channel and the second receiving channel may specifically include:
when the second transmitting channel transmits the 5G signal of the second identifier to the second antenna, the control end of the first switch controls the output end of the first switch to be grounded;
when the first transmitting channel transmits the 4G signal of the first mark to the first antenna, the control end of the second switch controls the output end of the second switch to be grounded.
The first receiving channel comprises a first low noise amplifier and a first switch, wherein the input end of the first low noise amplifier is connected with a first antenna, the output end of the first low noise amplifier is connected with the first modem, the input end of the first low noise amplifier is connected with the input end of the first switch, and the control end of the first switch controls whether the output end of the switch is grounded. The second receiving channel comprises a second low noise amplifier and a second switch, the input end of the second low noise amplifier is connected with the second antenna, the output end of the second low noise amplifier is connected with the second modem, the input end of the second low noise amplifier is connected with the input end of the second switch, and the control end of the second switch controls whether the output end of the second switch is grounded. When transmitting the signal through the first transmitting channel or the second transmitting channel, stopping receiving the signal through the first receiving channel and the second receiving channel may specifically include:
when the second transmitting channel transmits the 5G signal of the second identifier to the second antenna, the control end of the first switch controls the output end of the first switch to be grounded;
when the first transmitting channel transmits the 4G signal of the first mark to the first antenna, the control end of the second switch controls the output end of the second switch to be grounded.
In some embodiments, the radio frequency circuit control method may further include:
monitoring the transceiving states of the first modem and the second modem;
when monitoring that the first modem is ready to transmit the 4G signal of the first identifier, acquiring the working state of the second modem;
if the second modem is in the paging state of the second identifier, controlling the first modem to transmit a 4G signal after the second modem completes paging;
when monitoring that the second modem is ready to transmit the 5G signal of the second identifier, acquiring the working state of the first modem;
and if the first modem is in the paging state of the first identifier, controlling the second modem to transmit a 5G signal after the first modem completes paging.
The transmitting and receiving states of the 5Gmodem and the 4Gmodem can be monitored in real time through the transmitting control module in the embodiment, when one SIM card is ready for 5G transmission, whether the other SIM card is paging or not is monitored, if paging is done, the 5G is temporarily suspended, and after the 4G paging is finished, the 5G is released to continue transmission. If one SIM card is ready for 4G transmission, monitoring whether the other card is a paging card, if so, temporarily suspending the 4G card, and releasing 4G for continuous transmission after 5G paging is finished.
In the radio frequency circuit control method, obtaining the working states of the first transmitting channel, the second transmitting channel, the first receiving channel and the second receiving channel may include:
acquiring a first working frequency of a first modem and a second working frequency of a second modem;
and if the difference value between the first working frequency and the second working frequency is smaller than a preset difference threshold value, skipping to the step corresponding to 302 or 303, and otherwise, ending the process.
The preset difference threshold may be a fixed value, or a value obtained by multiplying the first operating frequency by a preset ratio, where the preset ratio may be 5%, 10%, 15%, or the like. The first working frequency is located in the first working frequency band, and the second working frequency is located in the second working frequency band. The preset difference threshold may be set according to the first operating frequency band or the second operating frequency band. The preset difference threshold may also be a value obtained by multiplying the minimum value, the intermediate value, or the maximum value of the first operating frequency band by a preset ratio, where the preset ratio may be 5%, 10%, 15%, or the like. For example, if the first operating frequency is at 4G B41 and the second operating frequency is at 5G N41, the difference between the first operating frequency and the second operating frequency is considered to be less than the preset difference threshold.
It should be particularly noted that the radio frequency circuit control method in the foregoing embodiments may be applied to the corresponding radio frequency circuit and electronic device, and similarly, the radio frequency circuit in the foregoing embodiments is applied to the corresponding radio frequency circuit control method.
In the process of constructing the 5G network, according to the requirement of the communication protocol, a 5G network architecture of an independent networking (SA) or a 5G network architecture of a Non-independent Networking (NSA) may be adopted. In the 5G network architecture of NSA, it is necessary to transmit 5G signals and 4G signals at the same time. That is, in the 5G network architecture of NSA, 5G signals include 4G signal streams and 5G signal streams.
Therefore, it can be understood that, in the embodiment of the present application, the 5G signal of the second SIM card may also be a 5G signal of a non-independent networking, that is, a 5G signal in the NSA mode.
An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer executes the radio frequency circuit control method according to any one of the above embodiments.
It should be noted that, all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, which may include, but is not limited to: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
It should be noted that in the description of the present application, terms such as "first", "second", and the like are used only for distinguishing similar objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The radio frequency circuit, the electronic device, and the control method of the radio frequency circuit provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.
Claims (10)
1. A radio frequency circuit, comprising:
the first modem is used for processing the 4G signals;
the second modem is used for processing the 5G signal;
the first transmitting channel is connected with the first modem and is used for transmitting the first identified 4G signal transmitted by the first modem to a first antenna;
a first receiving channel connected to the first modem and used for transmitting the first identified 4G signal received by a first antenna to the first modem, wherein the first receiving channel comprises a first switch connected between the first antenna and the first modem;
the second transmitting channel is connected with the second modem and is used for transmitting the 5G signal of the second identifier sent by the second modem to a second antenna;
a plurality of second receiving channels connected to the second modem and configured to transmit the second identified 5G signal received by a second antenna to the second modem, where the plurality of second receiving channels include a target second receiving channel combined with the second transmitting channel in the same module and other second receiving channels, each of the other second receiving channels includes a second switch, and each of the second switches is connected between one of the second antennas and the second modem;
a first input end of the switch controller is connected with a first control end of the first modem, a second input end of the switch controller is connected with a second control end of the second modem, and an output end of the switch controller is connected with control ends of the first switch and all the second switches;
the two selection ends of the first selection switch are respectively connected with the target second receiving channel and the second transmitting channel;
one end of the second selection switch is connected with the fixed end of the first selection switch, and the other end of the second selection switch is connected with the second antenna;
a first input end of the switch control unit is connected with a first control end of the first modem, a second input end of the switch control unit is connected with a second control end of the second modem, and an output end of the switch control unit is connected with a control end of the second selection switch;
when a signal is transmitted through the first transmitting channel and a signal is transmitted through the second transmitting channel, or a signal is transmitted through the second transmitting channel and a signal is not transmitted through the first transmitting channel, the switch controller controls the first receiving channel and the other second receiving channels to stop receiving signals through the first switch and all the second switches, and the switch control unit controls the second transmitting channel and the target second receiving channel to be connected with the corresponding second antenna through the second selection switch;
when a signal is transmitted through the first transmitting channel and a signal is not transmitted through the second transmitting channel, the switch controller controls the first receiving channel and the other second receiving channels to stop receiving signals through the first switch and the second switch, and the switch control unit controls the second transmitting channel and the target second receiving channel to be disconnected from the corresponding second antenna through the second selection switch; stopping transmitting signals through the first transmit channel and the second transmit channel when receiving signals through the first receive channel or the second receive channel.
2. The RF circuit of claim 1, wherein the first receiving channel comprises a first low noise amplifier, an input of the first switch is connected to the first antenna, and an output of the first switch is used for connecting the first modem or ground through the first low noise amplifier;
when the second transmitting channel transmits the 5G signal of the second identifier to the second antenna, the control end of the first switch controls the output end of the first switch to be grounded;
the second receiving channel comprises a second low noise amplifier, the input end of the second switch is connected with the second antenna, and the output end of the second switch is used for being connected with the second modem or the ground through the second low noise amplifier;
and when the first transmitting channel transmits the 4G signal of the first identifier to the first antenna, the control end of the second switch controls the output end of the second switch to be grounded.
3. The rf circuit according to claim 2, wherein when the first modem transmits the first identified 4G signal to the first antenna through the first transmitting channel, the first control terminal sends a control command to the control terminal of the second switch for controlling the output terminal of the second switch to be grounded;
when the second modem transmits the 5G signal of the second identifier to the second antenna through the second transmitting channel, the second control terminal sends a control instruction to the control terminal of the first switch, so as to control the output terminal of the first switch to be grounded.
4. The RF circuit of claim 3, wherein the switch controller is configured to control the output terminal of the first switch and the output terminal of the second switch to be grounded when the first control terminal and/or the second control terminal sends a control command.
5. The radio frequency circuit according to claim 1, wherein the first receiving channel comprises a first low noise amplifier, an input terminal of the first low noise amplifier is connected to a first antenna, an output terminal of the first low noise amplifier is connected to the first modem, an input terminal of the first low noise amplifier is connected to an input terminal of a first switch, and a control terminal of the first switch controls whether an output terminal of the switch is grounded;
when the second transmitting channel transmits the 5G signal of the second identifier to the second antenna, the control end of the first switch controls the output end of the first switch to be grounded;
the second receiving channel comprises a second low noise amplifier, the input end of the second low noise amplifier is connected with a second antenna, the output end of the second low noise amplifier is connected with the second modem, the input end of the second low noise amplifier is connected with the input end of the second switch, and the control end of the second switch controls whether the output end of the second switch is grounded;
and when the first transmitting channel transmits the 4G signal of the first identifier to the first antenna, the control end of the second switch controls the output end of the second switch to be grounded.
6. The rf circuit of claim 1, further comprising a transmission control module, wherein the transmission control module monitors the transceiving status of the first modem and the second modem;
the transmission control module is used for acquiring the working state of the second modem when monitoring that the first modem is ready to transmit the 4G signal of the first identifier; if the second modem is in the paging state of the second identifier, waiting for the second modem to complete paging, and then controlling the first modem to transmit the 4G signal;
the transmission control module is further used for acquiring the working state of the first modem when the situation that the second modem is ready to transmit the 5G signal of the second identifier is monitored; and if the first modem is in the paging state of the first identifier, controlling the second modem to transmit the 5G signal after the first modem completes paging.
7. An electronic device comprising a housing and radio frequency circuitry as claimed in any of claims 1 to 6, the radio frequency circuitry being disposed within the housing.
8. A radio frequency circuit control method is characterized in that the radio frequency circuit comprises a first modem, a second modem, a first transmitting channel, a first receiving channel, a second transmitting channel, a plurality of second receiving channels, a switch controller, a first selection switch, a second selection switch and a switch control unit, wherein the first modem is used for processing 4G signals; the second modem is used for processing a 5G signal; the first transmitting channel is connected with the first modem and is used for transmitting the first identified 4G signal transmitted by the first modem to a first antenna; the first receiving channel is connected with the first modem and is used for transmitting the first identified 4G signal received by a first antenna to the first modem, and the first receiving channel comprises a first switch which is connected between the first antenna and the first modem; the second transmitting channel is connected with the second modem and is used for transmitting the 5G signal of the second identifier sent by the second modem to a second antenna; the second receiving channels are connected with the second modem and are used for transmitting the second identified 5G signals received by a second antenna to the second modem, the second receiving channels comprise a target second receiving channel combined with the second transmitting channel in the same module and other second receiving channels, each other second receiving channel comprises a second switch, and each second switch is connected between one second antenna and the second modem; a first input end of the switch controller is connected with a first control end of the first modem, a second input end of the switch controller is connected with a second control end of the second modem, and an output end of the switch controller is connected with the first switch and control ends of all the second switches; two selection ends of the first selection switch are respectively connected with the target second receiving channel and the second transmitting channel; one end of the second selection switch is connected with the fixed end of the first selection switch, and the other end of the second selection switch is connected with the second antenna; the method comprises the following steps:
when a signal is transmitted through the first transmitting channel and a signal is transmitted through the second transmitting channel, or a signal is transmitted through the second transmitting channel and a signal is not transmitted through the first transmitting channel, the switch controller controls the first receiving channel and the other second receiving channels to stop receiving signals through the first switch and all the second switches, and the switch control unit controls the second transmitting channel and the target second receiving channel to be connected with the corresponding second antenna through the second selection switch;
when a signal is transmitted through the first transmitting channel and a signal is not transmitted through the second transmitting channel, the switch controller controls the first receiving channel and the other second receiving channels to stop receiving signals through the first switch and the second switch, and the switch control unit controls the second transmitting channel and the target second receiving channel to be disconnected from the corresponding second antenna through the second selection switch; stopping transmitting signals through the first transmit channel and the second transmit channel when receiving signals through the first receive channel or the second receive channel.
9. The method of claim 8, wherein the first receiving channel comprises a first low noise amplifier, an input terminal of the first switch is connected to the first antenna, and an output terminal of the first switch is used for connecting the first modem or ground through the first low noise amplifier; the second receiving channel comprises a second low noise amplifier, the input end of the second switch is connected with the second antenna, and the output end of the second switch is used for being connected with the second modem or the ground through the second low noise amplifier;
the stopping receiving signals through the first and second receive channels when transmitting signals through the first transmit channel or the second transmit channel comprises:
when the second transmitting channel transmits the 5G signal of the second identifier to the second antenna, the control end of the first switch controls the output end of the first switch to be grounded;
and when the first transmitting channel transmits the 4G signal of the first identifier to the first antenna, the control end of the second switch controls the output end of the second switch to be grounded.
10. The method of claim 8, further comprising:
monitoring transceiving states of the first modem and the second modem;
when the situation that the first modem is ready to transmit the 4G signal of the first identifier is monitored, acquiring the working state of the second modem;
if the second modem is in the paging state of the second identifier, waiting for the second modem to complete paging, and then controlling the first modem to transmit the 4G signal;
when the second modem is monitored to be ready to transmit the 5G signal of the second identifier, acquiring the working state of the first modem;
and if the first modem is in the paging state of the first identifier, controlling the second modem to transmit the 5G signal after the first modem completes paging.
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| CN112615631B (en) * | 2020-12-18 | 2022-06-07 | 维沃移动通信有限公司 | Radio frequency receiving circuit, radio frequency signal receiving method, radio frequency signal receiving device and electronic equipment |
| CN115296692A (en) * | 2021-01-28 | 2022-11-04 | 维沃移动通信有限公司 | Terminal double-card communication method, device, equipment and storage medium |
| CN116709499A (en) * | 2021-05-20 | 2023-09-05 | 荣耀终端有限公司 | Frequency band control method under double-card terminal abnormal scene and terminal equipment |
| CN113612498B (en) * | 2021-09-30 | 2021-12-31 | 荣耀终端有限公司 | Antenna configuration method and device |
| CN115225112B (en) * | 2022-08-15 | 2024-03-29 | 维沃移动通信有限公司 | Radio frequency circuit, bluetooth scanning method and device and electronic equipment |
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