Radio frequency system, communication method, terminal device and chip

Abstract

The embodiment of the invention discloses a radio frequency system, a communication method, terminal equipment and a chip. The radio frequency system comprises at least two radio frequency circuits, at least two power detection feedback modules and a control circuit, coupling output ports of all the radio frequency circuits are connected with all the power detection feedback modules in a one-to-one correspondence mode, and all the power detection feedback modules are connected with the control circuit. Each radio frequency circuit is used for amplifying the modulation signal of the transmitting link where each radio frequency circuit is located, determining each amplified signal, and outputting the amplified signals to the antenna assembly in each transmitting link so as to transmit the amplified signals; each power detection feedback module is used for receiving each feedback signal output by each coupling output port, demodulating each feedback signal and determining each coupling power; the control circuit is used for respectively determining the next transmitting power of each antenna assembly according to each coupling power; the next transmitting power is used for determining the modulation signal next time.

Description

Technical Field

[0001] The present application relates to the field of circuit technology, and in particular to a radio frequency system, a communication method, a terminal device and a chip. Background Art

[0002] With the rapid development of mobile terminals, users have higher and higher requirements for the communication quality of mobile terminals. However, in multi-transmission (transport, TX) scenarios, for example, uplink (UpLink) needs to use two antennas for transmission and four antennas for transmission. For dual-transmission scenarios, a dual hardware path of a power detection feedback receiver (Feedback Receiver, FBRX) is required to meet the stability of power control.

[0003] Related technical solutions, a FBRX path is designed inside the transceiver, that is, a power detection feedback receiving path. Therefore, the dual TX FBRX path needs to use a single pole double throw switch (SPDT) to access the transceiver, and realize the dual TX time-sharing power detection function by software-controlled timing.

[0004] However, the solution of implementing 2TX power detection must be combined through an external switch and time-sharing control. There are at least the following technical problems: there is only one FBRX receiving path inside the transceiver, and an external switch needs to be added to achieve combining, which makes the link more complicated; 2TX FBRX performs detection through time-sharing switching of the SPDT switch, which has high requirements on the timing of the switch. If the timing is messed up, it is easy to cause hardware interference problems and reduce the quality of the uplink signal. Summary of the invention

[0005] The embodiments of the present application provide a radio frequency system, a communication method, a terminal device and a chip, which reduce link complexity and improve uplink signal quality.

[0006] The technical solution of the embodiment of the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a radio frequency system, comprising: at least two radio frequency circuits, at least two power detection feedback modules and a control circuit; the coupling output port of each radio frequency circuit is connected to each power detection feedback module in a one-to-one correspondence, and each power detection feedback module is connected to the control circuit; each radio frequency circuit is used to amplify the modulated signal of the transmission link where the each radio frequency circuit is located, determine each amplified signal, and output it to the antenna component in each transmission link respectively to transmit the amplified signal; each power detection feedback module is used to receive each feedback signal output through each coupling output port, and demodulate each feedback signal to determine each coupling power; the control circuit is used to determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used to determine the modulation signal next time.

[0008] In a second aspect, an embodiment of the present application provides a communication method, which is applied to the radio frequency system as described in the first aspect, and the radio frequency system includes at least two transmission chains; the method includes: amplifying the modulated signals of each transmission link, determining each amplified signal, and outputting them to the antenna components in each transmission link respectively to transmit the amplified signal; demodulating the feedback signals of the coupled output ports of each transmission link to determine each coupling power; determining the next transmission power of each antenna component according to the each coupling power; the next transmission power is used for the next determination of the modulation signal process.

[0009] In a third aspect, an embodiment of the present application provides a terminal device, comprising: at least two antenna components, and a radio frequency system as described in the first aspect; the radio frequency system is respectively connected to each antenna component.

[0010] In a fourth aspect, an embodiment of the present application provides a chip, wherein the chip includes the radio frequency system described in the first aspect.

[0011] The embodiments of the present application provide a radio frequency system, a communication method, a terminal device and a chip. According to the scheme provided in the embodiments of the present application, the radio frequency system includes: at least two radio frequency circuits, at least two power detection feedback modules and a control circuit; the coupling output port of each radio frequency circuit is connected to each power detection feedback module in a one-to-one correspondence, and each power detection feedback module is connected to the control circuit; each radio frequency circuit is used to amplify the modulated signal of the transmission link where each radio frequency circuit is located, determine each amplified signal, and output it to the antenna component in each transmission link respectively to transmit the amplified signal; the radio frequency circuit includes a power amplifier and a coupler, which can amplify the signal and detect the coupling power. The amplified signal is transmitted by the antenna component, and the detected coupling power is transmitted to the power detection feedback module in the form of a feedback signal. Each power detection feedback module is used to receive each feedback signal output through each coupling output port, and demodulate each feedback signal to determine each coupling power; the number of power detection feedback modules corresponds to the number of RF circuits, and at least two power detection feedback modules can simultaneously receive feedback signals from the RF circuits to which they are connected, without the need to set an external switch (SPDT switch) or time-division multiplexing, thus saving the design of external switches, simplifying the RF link, and reducing the complexity of the link. The control circuit is used to determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used to determine the modulation signal next time. This solution uses a transceiver with at least two FBRX channels, and at least two FBRX channels can work in parallel, reducing the FBRX interference problem caused by timing disorder, and improving the accuracy and stability of detecting the transmission power of the terminal device, thereby achieving the purpose of accurately controlling the transmission power of the terminal device and improving the uplink signal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 1 ;

[0013] Figure 2 An optional schematic diagram of a transceiver provided in an embodiment of the present application Figure 1 ;

[0014] Figure 3 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 1 ;

[0015] Figure 4 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 2 ;

[0016] Figure 5 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 3 ;

[0017] Figure 6 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 4 ;

[0018] Figure 7 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 5 ;

[0019] Figure 8 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 2 ;

[0020] Fig. 9 An optional schematic diagram of a transceiver provided in an embodiment of the present application Figure 2 ;

[0021] Fig.10 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 3 ;

[0022] Fig.11 A flowchart of optional steps of a communication method provided in an embodiment of the present application;

[0023] Fig.12 Schematic diagram of an optional structure of a terminal device provided in an embodiment of the present application Figure 1 ;

[0024] Fig.13 Schematic diagram of an optional structure of a terminal device provided in an embodiment of the present application Figure 2 ;

[0025] Fig.14 Schematic diagram of an optional structure of a terminal device provided in an embodiment of the present application Figure 3 . DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. It should be understood that some of the embodiments described here are only used to explain the technical solutions of the present application and are not used to limit the technical scope of the present application.

[0027] In the following description, the terms "first\second\third" involved are only for distinguishing similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0028] In order to better understand the battery balancing control circuit provided in the embodiment of the present application, before introducing the technical solution of the embodiment of the present application, the application background and related technologies are first explained.

[0029] The radio frequency system provided in the embodiment of the present application is applied to the terminal device and is used in the communication process between the terminal device and the network device. Among them, the terminal device can be referred to as a "terminal", "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax and data communication capabilities; Personal Digital Assistant (PDA) that can include radio phones, pagers, Internet / intranet access, Web browsers, notepads, calendars and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices including radiotelephone transceivers. Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents or user devices. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a mobile phone, a laptop computer, a tablet computer, an e-book, a game console, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0030] The above network equipment is a dedicated hardware device used to connect various servers, personal computers (PCs), application terminals and other nodes to form an information communication network. Network equipment is a device that communicates with terminal equipment (or communication terminals, terminals). Network equipment can provide communication coverage for a specific geographical area and can communicate with terminals located in the coverage area. Exemplarily, the network device can be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communications, GSM) system or a code division multiple access mobile communication (Code Division Multiple Access, CDMA) system, or a network device (NodeB, NB) in a third-generation cellular mobile communication system (WCDMA) system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device can be a mobile switching center, a relay station, an access point (Access Point, AP), a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a core network in a 5G network, a base station and other network-side devices or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0031] Next, the relevant technologies of the RF system are introduced, such as Figure 1 As shown, Figure 1 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 1 , Figure 1 The transceiver shown in the figure includes two transmitting ports (including SDR_TX1 and SDR_TX2), where SDR represents the chip of the transceiver, and TX1 and TX2 represent two transmitting links; the two transmitting ports are respectively used to send modulated signals to two power amplifiers (Power Amplifier, PA), and the power amplifier amplifies the modulated signal and then transmits it through a transmitting antenna (antenna, ANT). Figure 1 The two power amplifiers include PA1 and PA2, and the two transmitting antennas include ANT1 and ANT2. Figure 1 The antenna switch in the antenna is used to select antennas of different working frequency bands, so as to send the signals amplified by the power amplifiers of different working frequency bands to the antennas. Figure 1It is only a schematic illustration of the signal flow between the various components. It is understandable that there are multiple power amplifiers and multiple transmitting antennas in the RF structure. Therefore, in order to make the diagram more concise, the antenna switch can also be omitted.

[0032] Above Figure 1 A FBRX path is designed inside the transceiver, and a FBRX_IN input interface is set externally. The dual TXFBRX paths need to use an SPDT switch to connect to the transceiver, that is, FBRX1 and FBRX2 are connected to the FBRX_IN interface at different times through the SPDT switch. The SPDT switch can be controlled by the Generic RF Controls (GRFC) module in the transceiver, that is, the software controls the timing, and FBRX1 and FBRX2 are connected to the transceiver in time periods, that is, they are not connected to the transceiver at the same time, to achieve dual TX time-sharing power detection function.

[0033] Above Figure 1 The FBRX path 1 includes the following steps: (1) transceiver: modulates the transmit signal and outputs it through the TX1 port; (2) PA1: power amplifier, amplifies the modulated signal output by the transceiver and outputs it to the antenna switch. At the same time, the internal integrated coupler detects the transmit power through the coupler (the coupler is used to output the coupled power, and the GRFC in the transceiver detects whether the transmit power is appropriate based on the coupled power); (3) SPDT: single-pole double-throw switch, the transceiver GRFC controls the SPDT to open the FBRX1 path and receive the coupled output power from the coupler inside PA1; (4) transceiver: receives the coupled power transmitted from the SPDT switch and demodulates the signal to realize the function of detecting the transmit power, and adjusts the transmit power of the mobile terminal in real time according to the target power of the mobile terminal to ensure the stability and accuracy of the transmit power.

[0034] Above Figure 1 The FBRX path 2 includes the following steps: (5) Transceiver: modulates the transmit signal and outputs it through the TX2 port; (6) PA2: power amplifier, amplifies the modulated signal output by the transceiver and outputs it to the antenna switch. At the same time, the internal integrated coupler detects the transmit power through the coupler; (7) SPDT: single-pole double-throw switch, controls the SPDT through the transceiver GRFC to open the FBRX2 path and receive the coupled output power from the coupler inside PA2; (8) Transceiver: receives the coupled power transmitted from the SPDT switch and demodulates the signal to realize the function of detecting the transmit power, and adjusts the transmit power of the mobile terminal in real time according to the target power of the mobile terminal to ensure the stability and accuracy of the transmit power.

[0035] Based on the above Figure 1 ,like Figure 2As shown, Figure 2 An optional schematic diagram of a transceiver provided in an embodiment of the present application Figure 1 , Figure 2 It is shown in Figure 1 The internal module of the transceiver contains the modem subsystem ( Figure 2 The PRX receiving module is used to receive the PRX main antenna ( Figure 1 and Figure 2 The PRX main antenna is responsible for sending and receiving RF signals. The DRX receiving module is used to receive the DRX diversity antenna ( Figure 1 and Figure 2 The signal (not shown) is only responsible for receiving signals but not sending them. The signals are combined and processed to obtain diversity gain. Diversity reception is mainly to offset the impact of fast fading on the received signal. Since multipath component signals are generated due to interference such as reflection during the transmission process, the receiving end uses multiple antennas to simultaneously receive signals from different paths, and then selects and combines these signals into a total signal to reduce the impact of signal fading. This is called diversity reception.

[0036] Above Figure 2 Modem subsystem: control signal transmission and reception; receiving module: complete the reception and demodulation of the main set (PRX) signal and the diversity signal (DRX); it should be noted that the signal received by the receiving module is received by the receiving antenna. Figure 1 and Figure 2 The receiving antenna is not shown in the figure, and ANT in the figure represents the transmitting antenna. Transmitting module: completes the modulation and transmission of TX1 link (TXChain1) and TX2 link (TXChain2) signals; FBRX receiving module: completes the reception and modulation of FBRX signals.

[0037] Above Figure 2 The figure also shows a combination of basic components of a receiving module, a FBRX receiving module (also referred to as a power detection feedback module), and a transmitting module. It can be understood that in practical applications, the components and connection relationships of each module are not limited to Figure 2 The structure shown here is only an exemplary description of the basic components and does not represent the actual structure. As long as the functions of the modules listed above can be realized, the basic components include: power amplifier, low-pass filter (LPF), power supply, variable-frequency drive (VFD), etc.

[0038] Above Figure 1 and Figure 2 The RF structure shown in the figure adopts a transceiver device with only one FBRX receiving module inside. When 2TX works simultaneously (that is, dual-transmission scenario), for example, dual SIM dual active (DSDA), long term evolution (LTE) and new radio (NR) concurrent (E-UTRAN New Radio-Dual Connectivity, ENDC), uplink carrier aggregation (ULCA) and uplink multiple-input multiple-output (UL MIMO) and other scenarios, Figure 1 The medium RF system must implement 2TX detection power through external switch closing (SPDT switch) and time-sharing control.

[0039] Based on the above Figure 1 and Figure 2 The description of the RF process in the specification has the following technical problems: (1) There is only one FBRX receiving path inside the transceiver, and an external switch is needed to realize the combination. The link is more complicated and increases the hardware cost and printed circuit board (PCB) area. (2) The 2TX FBRX signal requires an isolation of more than 40dB, which places high demands on the external switch. On the one hand, it will increase the hardware cost. On the other hand, if the SPDT switch has consistency problems, resulting in poor isolation, it is easy to cause interference, affect the accuracy of FBRX, and reduce the communication quality.

[0040] Based on this, an embodiment of the present application provides a radio frequency system, such as Figure 3 As shown, Figure 3 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 1 , the radio frequency system 100 includes: at least two radio frequency circuits ( Figure 3 RF circuit 11 ... RF circuit 12), at least two power detection feedback modules ( Figure 3In the figure, power detection feedback module 21…power detection feedback module 22 is shown) and a control circuit 30; the coupling output port of each RF circuit is connected to each power detection feedback module in a one-to-one correspondence, and each power detection feedback module is connected to the control circuit 30; each RF circuit is used to amplify the modulated signal of the transmission link where each RF circuit is located, determine each amplified signal, and output it to the antenna component in each transmission link respectively to transmit the amplified signal; each power detection feedback module is used to receive each feedback signal output through each coupling output port, and demodulate each feedback signal to determine each coupling power; the control circuit 30 is used to determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used to determine the modulation signal next time.

[0041] In the embodiment of the present application, the radio frequency system 100 includes a transceiver and at least two radio frequency circuits ( Figure 3 RF circuit 11 ... RF circuit 12 is shown), wherein the transceiver includes at least two power detection feedback modules ( Figure 3 , power detection feedback module 21 ... power detection feedback module 22 is shown), providing at least two power detection feedback ports ( Figure 3 , where m ports such as FBRX1_IN1 ... FBRXm_INm are shown, and m is an integer greater than 1). The number of RF circuits and power detection feedback modules included in the RF system 100 is consistent (both are m), and the coupled output ports of each RF circuit are connected to each power detection feedback module in a one-to-one correspondence, that is, the coupled output ports of each RF circuit are connected to each power detection feedback port provided by the transceiver in a one-to-one correspondence. Figure 3Also shown are m transmission links (including TX1...TXm) and m FBRX paths (including FBRX1...FBRXm), and the transceiver provides m signal transmission ports (including SDR_TX1...SDR_TXm). Each RF circuit includes a power amplifier, and an internally integrated coupler can amplify the modulated signal of the transmission link, thereby determining each amplified signal, and outputting it to the antenna assembly of the transmission link respectively, so that the antenna assembly transmits the amplified signal. At the same time, the coupling power is detected by the coupler, and in the form of a feedback signal, it is sent to the power detection feedback module connected thereto through the coupling output port, that is, it is fed back to the power detection feedback port. For each power detection feedback module, the received feedback signal is demodulated, the coupling power is determined, and each coupling power is sent to the control circuit 30. Since the number of power detection feedback modules is consistent with the number of RF circuits, there is no need to set an external switch (SPDT switch) or time-division multiplexing. At least two transmission links (including TX1...TXm) can work simultaneously, thereby obtaining the coupling power of each RF circuit, and the control circuit 30 determines the next transmission power of each antenna assembly according to each coupling power. The transmitting module then determines the modulation signal again according to the next transmitting power, thereby achieving flexible control of the transmitting power.

[0042] It should be noted that the antenna assembly can be a single antenna or any combination of multiple antennas, which is not limited in the embodiments of the present application.

[0043] In the embodiment of the present application, Figure 1 and Figure 2 Based on the provided RF framework, this solution designs a transceiver with at least two FBRX paths (at least two FBRX paths are implemented by at least two power detection feedback modules, Figure 3 FBRX1…FBRXm) is shown in FIG. 1 . On the one hand, at least two FBRX paths can work in parallel, solving the problem of Figure 1 The timing disorder problem caused by the 2TX FBRX time-sharing switching can be detected more accurately and stably, and the transmission power of the mobile terminal can be accurately controlled. The purpose of transmitting power of the terminal equipment is achieved, and the FBRX interference problem caused by timing disorder is reduced, and the uplink signal quality is improved. On the other hand, the external switch is saved, the FBRX RF link is simplified, the hardware cost is reduced, and the hardware cost and PCB area are saved.

[0044] It should be noted that the number of RF circuits and power detection feedback modules is described below by way of example. In one circuit structure, the RF system 100 may include two RF circuits, two power detection feedback modules, and a control circuit; in another circuit structure, the RF system 100 may include four RF circuits, four power detection feedback modules, and a control circuit; in another circuit structure, the RF system 100 may include eight RF circuits, eight power detection feedback modules, and a control circuit, and so on. The embodiment of the present application does not limit the number of RF circuits and power detection feedback modules, as long as the RF circuits and power detection feedback modules are connected one-to-one to ensure that each transmission link can be concurrent at the same time.

[0045] According to the scheme provided by the embodiment of the present application, the radio frequency system 100 includes: at least two radio frequency circuits, at least two power detection feedback modules and a control circuit; the coupling output ports of each radio frequency circuit are connected to each power detection feedback module in a one-to-one correspondence, and each power detection feedback module is connected to the control circuit; each radio frequency circuit is used to amplify the modulated signal of the transmission link where each radio frequency circuit is located, determine each amplified signal, and output it to the antenna assembly in each transmission link respectively to transmit the amplified signal; the radio frequency circuit includes a power amplifier and a coupler, which can amplify the signal and detect the coupling power, and the amplified signal is transmitted by the antenna assembly, and the detected coupling power is transmitted to the power detection feedback module in the form of a feedback signal. Each power detection feedback module is used to receive each feedback signal output through each coupling output port, demodulate each feedback signal, and determine each coupling power; the number of power detection feedback modules and radio frequency circuits corresponds, and at least two power detection feedback modules can simultaneously receive the feedback signals of the radio frequency circuits connected to each other, without the need to set an external switch (SPDT switch) or time-division multiplexing, saving the design of the external switch, simplifying the radio frequency link, and reducing the complexity of the link. The control circuit is used to determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used to determine the modulation signal next time. This solution uses a transceiver with at least two FBRX channels, and at least two FBRX channels can work in parallel, which reduces the FBRX interference problem caused by timing disorder, improves the accuracy and stability of detecting the transmission power of the terminal device, and thus achieves the purpose of accurately controlling the transmission power of the terminal device and improves the uplink signal quality.

[0046] In some embodiments, the radio frequency system 100 is applied to the following dual-transmission application scenarios: coexistence scenarios of fourth-generation mobile communication technologies and fifth-generation mobile communication technologies, uplink carrier aggregation scenarios, dual-SIM dual-standby scenarios, and uplink multiple-input multiple-output scenarios.

[0047] In the embodiment of the present application, the radio frequency system 100 may be applicable to a dual-transmit (2TX) application scenario. Exemplary, the coexistence scenario of the fourth generation mobile communication technology (4G) and the fifth generation mobile communication technology (5G), for example, LTE+NR, may also be referred to as an ENDC scenario, including but not limited to: B8+N41 ENDC, B8 TX1, N41 TX2, and B8 TX2, N41 TX1; the uplink carrier aggregation scenario (ULCA scenario) includes but is not limited to: B8+B41 ULCA, B8 TX1, B41 TX2, and B8 TX2, B41 TX1; the dual-card dual-standby scenario (DSDA scenario) includes but is not limited to: for example, B8+N41 DSDA, B8 TX1, N41 TX2, and B8 TX2, N41 TX1; the uplink multiple-input and multiple-output scenario (UL MIMO scenario) includes but is not limited to: N41+N41 UL MIMO, with 2 N41s in TX1 and TX2 respectively.

[0048] In an embodiment of the present application, by setting up at least two power detection feedback modules, the feedback signal output by the coupled output port of the RF circuit connected thereto can be received simultaneously, without setting up an external switch (SPDT switch), thereby realizing a dual-transmission scenario in which two transmission links work simultaneously.

[0049] In some embodiments, based on the above Figure 3 ,like Figure 4 As shown, Figure 4 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 2 The radio frequency system 100 also includes at least two transmitting modules ( Figure 4 The radio frequency circuit includes at least two radio frequency modules ( Figure 4 In the case where a radio frequency circuit includes a radio frequency module 111, a radio frequency module 112 ... a radio frequency module 113, and a radio frequency circuit includes a radio frequency module 121, a radio frequency module 122 ... a radio frequency module 123), the transmitting module in the same transmitting link includes at least two signal transmitting ports ( Figure 4The TX1 transmission link includes signal transmission ports SDR_TX1_1, SDR_TX1_2...SDR_TX1_n; or the TXm transmission link includes signal transmission ports SDR_TXm_1, SDR_TXm_2...SDR_TXm_n), and each signal transmission port of the transmission module is connected to each RF module in a one-to-one correspondence; at least two RF modules in the same transmission link do not work at the same time; each transmission module is also used to modulate the transmission signal of the target RF module in each transmission link, determine the modulation signal of each target RF module, and send each modulated signal to each target RF module; the target RF module is the RF module that is currently in working state.

[0050] In the embodiment of the present application, the radio frequency system 100 includes at least two transmission links (including TX1...TXm). Based on this, the transceiver of the radio frequency system 100 also includes at least two transmission modules ( Figure 4 42), and provides at least two signal transmission ports ( Figure 4 SDR_TX1_1, SDR_TX1_2…SDR_TX1_n of the TX1 transmission link; or SDR_TXm_1, SDR_TXm_2…SDR_TXm_n of the TXm transmission link). For each transmission module, it is used to modulate the transmission signal of the transmission link, determine the modulation signal, and send it to the RF circuit of the transmission link. For each RF circuit, it can include one RF module or multiple RF modules. The number of RF modules included in each RF circuit can be the same or different. Taking two RF circuits as an example, for example, the first RF circuit and the second RF circuit both include three RF modules, the first RF circuit includes one RF module, and the second RF circuit includes three RF modules.

[0051] In an embodiment of the present application, for the case where one RF module is included, the transceiver provides the RF circuit with signal transmission ports that are consistent with the number of RF circuits, that is, one transmission module corresponds to one signal transmission port. For the case where the RF circuit includes at least two RF modules, each RF module operates in a different frequency band, that is, at least two RF modules in the same transmission chain (for example, RF module 111, RF module 112...RF module 113; or, RF module 121, RF module 122...RF module 123) correspond to different operating frequency bands. The number of signal transmission ports provided by the transmission modules in the same transmission chain may be consistent with the number of RF modules included in the RF circuit. At least two RF modules in the same transmission chain (for example, Figure 4In the embodiment, the RF module 111, RF module 112 ... RF module 113; or, the RF module 121, RF module 122 ... RF module 123) do not work at the same time, and the transmitting module in the same transmitting link sends the modulation signal to each RF module in a time-sharing manner. Exemplarily, for each transmitting module, at a certain time, the transmitting module modulates the transmission signal of the target RF module in the transmitting link, determines the modulation signal of the target RF module, and sends the modulation signal to the target RF module; the target RF module is the RF module that is currently in working state in the RF circuit.

[0052] It should be noted that when the RF circuit includes at least two RF modules, at the same time and in the same transmission link, one RF module is in a working state (which can be called the target RF module), and the next transmission power determined by the control circuit 30 is used to determine the modulation signal of the target RF module next time.

[0053] In an embodiment of the present application, RF modules in different transmission links can work at the same time, and RF modules in the same transmission link cannot work at the same time. The present design is not limited to the number of RF modules in the RF circuit. Taking the RF system 100 including the FBRX1 path and the FBRX2 path, and the RF module is a PA as an example, the present design is not limited to the number of PAs. When the RF circuit includes multiple RF modules (multiple PAs), it is ensured that all PAs in the transmission link TX1 are uniformly connected to the FBRX1 path, and it is ensured that all PAs in the transmission link TX2 are uniformly connected to the FBRX2 path, and FBRX parallel operation can also be realized. At the same time, the PAs in the two transmission links can transmit signals at the same time to realize dual transmission. At the same time, multiple PAs (PAs belonging to different frequency bands) in the same transmission link do not work at the same time. The RF circuit can be a RF module or multiple RF modules cascaded to each other, which improves the diversity of the circuit structure of the RF system and realizes the application scenario of dual FBRX paths.

[0054] In some embodiments, the RF circuit includes at least two RF modules; each sub-coupling port of each RF module is connected to the power detection feedback module, or, as above Figure 4 As shown, each sub-coupling port of each RF module is connected to the coupling output port, and the coupling output port is connected to the power detection feedback module.

[0055] In an embodiment of the present application, when the RF circuit includes at least two RF modules, the connection relationship between the RF module and the power detection feedback module is as follows: at least two RF modules are connected in sequence, and each sub-coupling port of each RF module is respectively connected to the power detection feedback module, that is, the number of power detection feedback interfaces provided by each power detection feedback module is consistent with the number of RF modules in the transmission link.

[0056] In the embodiment of the present application, the connection relationship between the RF module and the power detection feedback module can also be as follows: Figure 4 As shown, at least two RF modules (for example, Figure 4 The RF module 111, RF module 112 ... RF module 113; or, RF module 121, RF module 122 ... RF module 123) are connected in sequence, and the feedback signals (i.e., coupling power) of each RF module are summarized by the coupling output port of the RF circuit, that is, each sub-coupling port of each RF module is connected to the coupling output port, and each power detection feedback module is connected to the coupling output port of the RF circuit, so that the feedback signals about each RF module output by the coupling output port can be received.

[0057] It should be noted that since multiple RF modules of the RF circuit in the same link do not work at the same time, at the same time, the power detection feedback module can receive a feedback signal about a certain RF module output by the coupling output port, or the power detection feedback module can receive a feedback signal output by a certain sub-coupling port.

[0058] In the embodiment of the present application, the connection relationship between the RF module and the power detection feedback module can adopt different connection methods, all of which can realize FBRX parallel operation, thereby improving the diversity of the circuit structure.

[0059] In some embodiments, based on the above Figure 3 ,like Figure 5 As shown, Figure 5 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 3 , at least two RF circuits include a first RF circuit 13 and a second RF circuit 14, and at least two power detection feedback modules include a first power detection feedback module 23 and a second power detection feedback module 24; the coupling output port of the first RF circuit 13 is connected to the first power detection feedback module 23, and the coupling output port of the second RF circuit 14 is connected to the second power detection feedback module 24.

[0060] In the embodiment of the present application, the RF system 100 includes two RF circuits (a first RF circuit 13 and a second RF circuit 14) as an example. Figure 5Two transmission links (including TX1 and TX2) and two FBRX paths (including FBRX1 and FBRX2) are shown in the figure. The transceiver provides two signal transmission ports (including SDR_TX1 and SDR_TX2) and two power detection feedback ports (including FBRX1_IN1 and FBRX2_IN2). Correspondingly, the transceiver of the RF system 100 includes two power detection feedback modules (a first power detection feedback module 23 and a second power detection feedback module 24). The RF circuit is connected to the power detection feedback module in a one-to-one correspondence to realize the parallel operation of two FBRXs. The RF system 100 can be applied to dual-transmission scenarios.

[0061] In some embodiments, based on the above Figure 3 ,like Figure 6 As shown, Figure 6 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 4 The radio frequency system 100 further includes: a receiving module 50 and at least two transmitting modules ( Figure 6 . . , transmitting modules 41 . . . transmitting modules 42) are shown in the figure; a receiving module 50 is used to demodulate a received signal and determine signal quality information and a signal frequency band; a control circuit 30 is further used to determine a transmitting signal of each transmitting link according to the signal quality information and the signal frequency band; each transmitting module is used to modulate a transmitting signal of each transmitting link and determine each modulated signal.

[0062] In the embodiment of the present application, the interaction process between the network device and the terminal device (which includes the radio frequency system 100) is described. Since the power received by the network device is unknown during uplink transmission, the uplink channel quality cannot be determined. Based on this, the downlink channel quality (including signal quality information and signal frequency band) can be determined according to the signal received by the terminal device, and then the uplink channel quality can be estimated according to the downlink channel quality (in a short period of time, the downlink channel quality and the uplink channel quality can be considered consistent), and then the transmission signal of each transmission link is determined according to the estimated uplink channel quality.

[0063] In an embodiment of the present application, after the terminal device establishes a connection with the network device, the RF system 100 in the terminal device receives a signal through the receiving module 50. The receiving module 50 may include a main set receiving module (PRX) and a diversity receiving module (DRX). The received signal includes a main set signal and a diversity signal. The receiving module 50 demodulates the received signal to determine the signal quality information and signal frequency band of the downlink channel. The RF system 100 determines the current communication environment based on the signal quality information and the signal frequency band through the control circuit 30, and then determines the transmission signal of each transmission link. Then, each transmission module modulates the transmission signal of each transmission link respectively, determines each modulation signal, and transmits each modulation signal to the RF circuit, and the RF circuit performs the steps of signal amplification and antenna component transmission.

[0064] In an embodiment of the present application, the RF system 100 is applied to a terminal device, and the reception and demodulation of the main set and diversity signals are completed through the receiving module 50, the transmission and reception of the signals are controlled through the control circuit 30, and the modulation and transmission of the signals of each transmission link (including at least the TX1 link and the TX2 link) are completed through each transmission module, thereby completing the dual transmission process and increasing the application scenarios of the RF system.

[0065] In some embodiments, based on the above Figure 3 ,like Figure 7 As shown, Figure 7 An optional schematic diagram of a radio frequency system provided in an embodiment of the present application Figure 5 The radio frequency system 100 also includes at least two transmitting modules ( Figure 7 The transmitting module 41 ... transmitting module 42 is shown in the figure, and the radio frequency circuit includes a power amplifier and a coupler ( Figure 7 The RF circuit 11 shown in the figure includes a power amplifier 1101 and a coupler 1102; the RF circuit 12 includes a power amplifier 1201 and a coupler 1202); the input end of the power amplifier (power amplifier 1101 or power amplifier 1201) is connected to the signal transmission port (SDR_TX1 or SDR_TXm) of the transmission module, and the coupling output port of the coupler (coupler 1102 or coupler 1202) is connected to the power detection feedback module; the power amplifier (power amplifier 1101 or power amplifier 1201) is used to amplify the modulated signal of the transmission link where the RF circuit is located, determine the amplified signal, and output it to the antenna component in the transmission link; the coupler (coupler 1102 or coupler 1202) is used to send the coupling power of the coupler to the power detection feedback module through the coupling output port.

[0066] In an embodiment of the present application, the radio frequency circuit can be a power amplifier, which has an internally integrated coupler, and the radio frequency circuit provides an input port and a coupled output port to the outside. The radio frequency circuit can also include a power amplifier 1101 and a coupler 1102 connected to each other (or, a power amplifier 1201 and a coupler 1202 connected to each other). For a radio frequency circuit including a radio frequency module, it includes a power amplifier and a coupler, and the power amplifier is connected to the transmitting module to receive the modulated signal sent by the transmitting module, and amplify the signal, determine the amplified signal, and at the same time, the coupler sends its coupled power in the form of a feedback signal to a power detection feedback module connected to the coupler.

[0067] In the embodiment of the present application, for a radio frequency circuit including multiple radio frequency modules, each radio frequency module includes a power amplifier and a coupler. For the same transmission link, the multiple radio frequency modules include multiple power amplifiers and multiple couplers, and the multiple power amplifiers are connected to the multiple signal transmission ports of the transmission module in the same transmission link in a one-to-one correspondence (see the above Figure 4 At the same time, any power amplifier receives the modulated signal sent by the transmitting module, amplifies the signal, and determines the amplified signal. At the same time, the coupler sends its coupled power in the form of a feedback signal to a power detection feedback module connected to the coupler.

[0068] In the embodiment of the present application, the radio frequency system 100 includes at least two transmitting modules ( Figure 7 The transmitting module 41 ... transmitting module 42) and at least two radio frequency circuits ( Figure 7 RF circuit 11…RF circuit 12) is shown in the figure, and each RF circuit includes a power amplifier and a coupler connected to each other. In a transmission link, the power amplifier (power amplifier 1101 or power amplifier 1201) is connected to the transmission module, and the coupler (coupler 1102 or coupler 1202) is connected to the power detection feedback module. The transmission module sends a modulated signal to the power amplifier (power amplifier 1101 or power amplifier 1201), and the power amplifier amplifies the signal and then sends it to the body antenna assembly for transmission. At the same time, the coupler sends the coupled power in the form of a feedback signal to the power detection feedback module to detect the transmission power, thereby completing a transmission process. Since the RF system 100 includes at least two power detection feedback modules ( Figure 7 The power detection feedback module 21 ... power detection feedback module 22 is shown in the figure. Therefore, at the same time, for another transmission link, the above process can also be performed simultaneously, thereby completing the dual transmission process and increasing the application scenarios of the radio frequency system.

[0069] In some embodiments, the control circuit 30 is also used to determine each power difference based on each coupling power and the transmission power of each transmission signal; and, based on each power difference and a preset coupling factor, determine the next transmission power of the antenna component in each transmission link; wherein the preset coupling factor is positively correlated with the transmission power.

[0070] In an embodiment of the present application, the power detection feedback module receives the feedback signal sent by the coupler in the radio frequency circuit, demodulates the feedback signal, determines the coupling power, and sends the coupling power to the control circuit 30. The control circuit 30 receives the coupling power and knows the modulation signal sent by the transmitting module to the radio frequency circuit. The essential function of the transmitting module is to modulate the transmission power of the transmitting signal. Therefore, the modulation signal carries the transmission power of the transmitting signal. The control circuit 30 determines the power difference according to the coupling power and the transmission power of the transmitting signal in the transmitting link, which can be the power difference between the two. The unit of power is dBm, and the unit of power difference is dB. The coupling factor of each coupler is a fixed value, but it will change with the increase of time, the increase of temperature and other factors. Therefore, in this scheme, the control circuit 30 adjusts the power to be transmitted next time based on the transmission power modulated by the transmitting module and the received coupling power, so that the actual transmission power meets the requirements, thereby improving the accuracy of the transmitted signal.

[0071] In the embodiment of the present application, the preset coupling factor is positively correlated with the transmit power. For example, the preset coupling factor is a fixed value of -20dB, and the modulated transmit power is 30dBm. As the temperature of the circuit increases, the preset coupling factor changes to a fixed value of -23dB, and the modulated transmit power is 33dBm. For the same transmit link, the preset coupling factor is a fixed value. The greater the modulated transmit power, the greater the detected coupling power.

[0072] For example, taking the preset coupling factor of -20dB and the modulated transmission power of 30dBm as an example, if the detected coupling power is 10dBm and the power difference between the two is 20dB, there is no need to adjust the next transmission power. If the detected coupling power is 9dBm and the power difference between the two is 21dB, it means that the modulated transmission power is high, and the next transmission power needs to be adjusted to 29dBm. If the detected coupling power is 11dBm and the power difference between the two is 19dB, it means that the modulated transmission power is low, and the next transmission power is adjusted to 31dBm.

[0073] In the embodiment of the present application, the control circuit 30 determines the power differences based on the coupling power and the transmission power of the modulated transmission signal. Combined with the preset coupling factor, it can be determined whether the modulated transmission power is too high or too low, and then the next transmission power of the antenna component in the transmission link is determined, thereby improving the accuracy of the transmission signal.

[0074] The following is an explanation of an exemplary application of the embodiments of the present application in a practical application scenario.

[0075] For example, Figure 8 As shown, Figure 8 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 2 ; Figure 8 PA1 and PA2 represent two RF circuits, ANT1 and ANT2 represent antenna components on two transmission links. Figure 8 The transceiver shown in the figure includes two signal transmission ports (including SDR_TX1 and SDR_TX2), TX1 and TX2 represent two transmission links; the two signal transmission ports are used to send modulated signals to PA1 and PA2 respectively, and after PA1 and PA2 amplify the modulated signals, they are transmitted through ANT1 and ANT2 respectively. Figure 8 The antenna switch in the device is used to select antennas for different operating frequency bands. Figure 8 This is only a schematic illustration. It is understandable that there are multiple PAs and multiple ANTs in the radio frequency structure. Therefore, in order to make the diagram more concise, the antenna switch can be omitted.

[0076] Above Figure 8 The dual TX FBRX paths include FBRX1 and FBRX2. Figure 8 The FBRX path 1 includes the following steps: (1) Transceiver: modulates the transmit signal and outputs it through the TX1 port; (2) PA1: power amplifier, amplifies the modulated signal output by the transceiver and outputs it to the antenna switch. At the same time, the internal integrated coupler detects the transmit power through the coupler; (3) Transceiver: receives the coupled output power from the coupler inside PA1 and demodulates the signal to realize the function of detecting the transmit power, and adjusts the transmit power of the terminal device in real time according to the target power of the terminal device to ensure the stability and accuracy of the transmit power. Figure 8The FBRX path 2 includes the following steps: (4) Transceiver: modulates the transmit signal and outputs it through the TX2 port; (5) PA2: power amplifier, amplifies the modulated signal output by the transceiver and outputs it to the antenna switch. At the same time, the internal integrated coupler detects the transmit power through the coupler; (6) Transceiver: receives the coupled output power from the coupler inside PA2 and demodulates the signal to realize the function of detecting the transmit power, and adjusts the transmit power of the terminal device in real time according to the target power of the terminal device to ensure the stability and accuracy of the transmit power.

[0077] Based on the above Figure 8 ,like Fig. 9 As shown, Fig. 9 An optional schematic diagram of a transceiver provided in an embodiment of the present application Figure 2 ; Fig. 9 It is shown in Figure 8 The internal module of the transceiver contains the modem subsystem ( Fig. 9 The PRX receiving module is used to receive the PRX main antenna ( Figure 8 and Fig. 9 The DRX receiving module is used to receive the signal of the DRX diversity antenna ( Figure 8 and Fig. 9 ) signal not shown.

[0078] Above Fig. 9 Modem subsystem (corresponding to the control circuit 30 in the above-mentioned radio frequency system): equivalent to a controller, controlling the transmission and reception of signals; receiving module: completing the reception and demodulation of the main set (PRX) signal and the diversity signal (DRX); it should be noted that the signal received by the receiving module is received by the receiving antenna, Figure 8 and Fig. 9 The receiving antenna is not shown in the figure, and ANT in the figure represents the transmitting antenna. Transmitting module: completes the modulation and transmission of TX1 link (TX Chain1) and TX2 link (TX Chain2) signals; FBRX receiving module: completes the reception and modulation of FBRX1 and FBRX2 signals.

[0079] It should be noted that the above Fig. 9 The figure also shows the combination of basic elements of the receiving module, the power detection feedback module, and the transmitting module. It can be understood that in practical applications, the components and connection relationships of each module are not limited to Fig. 9The structure shown here is only an exemplary description of the basic components and does not represent the actual structure. As long as the functions of the modules listed above can be realized, the basic components include: power amplifier, low-pass filter (LPF), power supply, frequency converter (VFD), etc.

[0080] In the embodiment of the present application, the above Figure 8 and Fig. 9 By designing a transceiver device with two FBRX channels, on the one hand, 2TX FBRX can work in parallel, solving the timing disorder problem caused by 2TX FBRX time-sharing switching, and can more accurately and stably detect the mobile terminal transmission power, achieving the purpose of accurately controlling the mobile terminal transmission power; and, replacing SPDT time-sharing switching to achieve FBRX parallel work, reducing the FBRX interference problem caused by timing disorder and improving the uplink signal quality. On the other hand, it saves external switches, simplifies the FBRX RF link, and saves hardware costs and PCB area.

[0081] Based on the above Figure 8 ,like Fig.10 As shown, Fig.10 An optional schematic diagram of a radio frequency block diagram provided in an embodiment of the present application Figure 3 In this solution, the RF system does not limit the number of PAs. When there are more PAs, all PAs of TX1 are connected to the FBRX1 channel, and all PAs of TX2 are connected to the FBRX2 channel. FBRX can also work in parallel, so it can be applied to the scenario of dual FBRX channels. Among them, at the same time, the PAs in the two transmission links can transmit signals at the same time to achieve dual transmission. At the same time, multiple PAs (PAs belonging to different frequency bands) in the same transmission link do not work at the same time. The RF circuit includes one PA, or multiple PAs cascaded with each other, which improves the diversity of the circuit structure of the RF system.

[0082] In some embodiments, an embodiment of the present application provides a communication method, which is applied to the radio frequency system 100 described in any of the above embodiments, and the radio frequency system includes at least two transmission links, and the transmission link is composed of a transmission module, a radio frequency circuit, an antenna assembly, a power detection feedback module and other devices, such as Fig.11 As shown, Fig.11 An optional step flow chart of a communication method provided in an embodiment of the present application, the communication method comprises the following steps:

[0083] S101, amplify the modulated signals of each transmission link, determine each amplified signal, and output them to the antenna components in each transmission link respectively to transmit the amplified signal.

[0084] S102: Demodulate the feedback signal of the coupled output port of each transmission link to determine each coupled power.

[0085] S103. Determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used in the process of determining the modulation signal next time.

[0086] According to the scheme provided by the embodiment of the present application, the modulated signal of each transmission link is amplified, each amplified signal is determined, and each amplified signal is output to the antenna assembly in each transmission link to transmit the amplified signal; at the same time, the detected coupling power is transmitted to the power detection feedback module in the form of a feedback signal. Since the RF system is provided with at least two power detection feedback modules, at least two power detection feedback modules can simultaneously receive the feedback signals of the RF circuits connected to each other, without the need to set an external switch (SPDT switch) or time division multiplexing, saving the design of the external switch, simplifying the RF link, and reducing the complexity of the link. Then, the RF system demodulates the feedback signal of the coupled output port of each transmission link to determine each coupling power; according to each coupling power, the next transmission power of each antenna assembly is determined respectively; the next transmission power is used for the next process of determining the modulation signal. This scheme adopts a transceiver with at least 2 FBRX channels, and at least 2 FBRX channels can work in parallel, reducing the FBRX interference problem caused by timing disorder, improving the accuracy and stability of detecting the transmission power of the terminal device, thereby achieving the purpose of accurately controlling the transmission power of the terminal device and improving the uplink signal quality.

[0087] In some embodiments, based on the above Fig.11 The RF circuit in the transmission link includes at least two RF modules, and the communication method also includes the following steps: at the same time, modulating the transmission signals of the target RF modules in each transmission link, and determining the modulation signals of each target RF module; the target RF module is the RF module that is currently in working state.

[0088] In some embodiments, in the above Fig.11 Before S101, the communication method also includes the following steps: demodulating the received signal to determine the signal quality information and the signal frequency band; the control circuit is also used to determine the transmission signal of each transmission link according to the signal quality information and the signal frequency band; each transmission module is used to modulate the transmission signal of each transmission link to determine each modulation signal.

[0089] In some embodiments, for any transmission link, the above Fig.11S101 can also be implemented in the following manner: amplifying the modulated signal of the transmission link, determining the amplified signal, and outputting it to the antenna component in the transmission link to transmit the amplified signal; a coupler is used to send the coupled power of the coupler to the power detection feedback module through the coupling output port in the form of a feedback signal.

[0090] In some embodiments, the above Fig.11 S103 can also be implemented in the following manner: determining each power difference according to each coupling power and the transmission power of each transmission signal; and determining the next transmission power of the antenna component in each transmission link according to each power difference and a preset coupling factor; wherein the preset coupling factor is positively correlated with the transmission power.

[0091] In some embodiments, the communication method is applied to the following dual-transmission application scenarios: coexistence scenarios of fourth-generation mobile communication technologies and fifth-generation mobile communication technologies, uplink carrier aggregation scenarios, dual-SIM dual-standby scenarios, and uplink multiple-input multiple-output scenarios.

[0092] It should be noted that the communication method provided in the embodiment of the present application can be executed by the radio frequency system 100 described in any of the above embodiments. The communication method provided in the above embodiments and the radio frequency system embodiment belong to the same concept. The specific implementation process and beneficial effects thereof are detailed in the circuit embodiment, which will not be described in detail here. For technical details not disclosed in the embodiment of the method, please refer to the description of the circuit embodiment of the present application for understanding.

[0093] The present application embodiment provides a terminal device, such as Fig.12 As shown, Fig.12 Schematic diagram of an optional structure of a terminal device provided in an embodiment of the present application Figure 1 The terminal device 1000 includes the radio frequency system 100 described in any of the above embodiments, and at least two antenna components ( Fig.12 . . , antenna components 210 . . . , antenna components 220 are shown in the figure), and the radio frequency system 100 is connected to each antenna component (antenna component 210 . . . , antenna component 220) respectively.

[0094] Based on the above Fig.12 ,like Fig.13 As shown, the embodiment of the present application also provides an optional structural diagram of a terminal device Figure 2 , Fig.13The terminal device 1000 includes a radio frequency system 100 and two antenna components (antenna component 230 and antenna component 240), wherein the radio frequency system 100 includes a transceiver and two radio frequency circuits (radio frequency circuit 15 and radio frequency circuit 16), and the transceiver includes a control circuit 30, two power detection feedback modules (power detection feedback module 25 and power detection feedback module 26), two transmitting modules (transmitting module 43 and transmitting module 44), and two receiving modules (receiving module 51 and receiving module 52) are shown as an example. Fig.13 Two transmission chains (including TX1 and TX2) and two FBRX channels (including FBRX1 and FBRX2) are shown in the figure. The transceiver provides two signal transmission ports (including SDR_TX1 and SDR_TX2) and two power detection feedback ports (including FBRX1_IN1 and FBRX2_IN2).

[0095] It should be noted that Fig.13 The two receiving modules (receiving module 51 and receiving module 52) are used to receive the main set signal (PRX) and the diversity signal (DRX) respectively. Fig.13 The description of the radio frequency system 100 and the technical effects achieved can be found in the above Figure 3-Figure 10 The description will not be repeated here.

[0096] Based on the above Fig.12 ,like Fig.14 As shown, the embodiment of the present application also provides an optional structural diagram of a terminal device Figure 3 , Fig.14 The terminal device 1000 includes a RF system 100 and two antenna components (antenna component 230 and antenna component 240), wherein the RF system 100 includes a transceiver and two RF circuits, the transceiver includes a control circuit 30, two power detection feedback modules (power detection feedback module 25 and power detection feedback module 26), two transmitting modules (transmitting module 43 and transmitting module 44), and two receiving modules (receiving module 51 and receiving module 52), wherein each RF circuit includes at least two RF modules, for example, RF module 151, RF module 152...RF module 153; or, RF module 161, RF module 162...RF module 163) is shown as an example. Fig.14 Two transmission chains (including TX1 and TX2) and two FBRX channels (including FBRX1 and FBRX2) are shown in the figure. The transceiver provides 2n signal transmission ports (including SDR_TX1_1, SDR_TX1_2...SDR_TX1_n and SDR_TX2_1, SDR_TX2_2...SDR_TX2_n), and provides two power detection feedback ports (including FBRX1_IN1 and FBRX2_IN2).

[0097] It should be noted that Fig.14 The two receiving modules (receiving module 51 and receiving module 52) are used to receive the main set signal (PRX) and the diversity signal (DRX) respectively. Fig.14 The description of the radio frequency system 100 and the technical effects achieved can be found in the above Figure 3-Figure 9 The description will not be repeated here.

[0098] An embodiment of the present application provides a chip, which includes the radio frequency system 100 described in any of the above embodiments.

[0099] An embodiment of the present application provides a computer-readable storage medium storing a computer program for implementing the communication method described in any of the above embodiments when executed by a processor.

[0100] Exemplarily, a program instruction corresponding to a communication method in an embodiment of the present application may be stored on a storage medium such as a CD, a hard disk, or a USB flash drive. When the program instruction corresponding to a communication method in the storage medium is read or executed by an electronic device, the communication method described in any of the above embodiments may be implemented.

[0101] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0102] The present application is described with reference to implementation flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which is implemented in the implementation flow diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process described in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0105] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A radio frequency system, characterized in that: The radio frequency system comprises: at least two radio frequency circuits, at least two power detection feedback modules and a control circuit; the coupling output ports of each radio frequency circuit are connected to each power detection feedback module in a one-to-one correspondence, and each power detection feedback module is connected to the control circuit; Each of the radio frequency circuits is used to amplify the modulated signal of the transmission link where each of the radio frequency circuits is located, determine each amplified signal, and output it to the antenna component in each transmission link respectively to transmit the amplified signal; Each power detection feedback module is used to receive each feedback signal output through each coupling output port, and demodulate each feedback signal to determine each coupling power; The control circuit is used to determine the next transmission power of each antenna component according to each coupling power; the next transmission power is used to determine the modulation signal next time.

2. The radio frequency system according to claim 1, characterized in that: The radio frequency system further includes at least two transmitting modules; when the radio frequency circuit includes at least two radio frequency modules, the transmitting module in the same transmitting link includes at least two signal transmitting ports, and each signal transmitting port of the transmitting module is connected to each radio frequency module in a one-to-one correspondence; the at least two radio frequency modules in the same transmitting link do not work at the same time; Each transmitting module is also used to modulate the transmission signal of the target radio frequency module in each transmitting link, determine the modulation signal of each target radio frequency module, and send each modulated signal to each target radio frequency module; The target RF module is the RF module that is currently in working state.

3. The radio frequency system according to claim 1 or 2, characterized in that: The RF circuit includes at least two RF modules; each sub-coupling port of each RF module is connected to a power detection feedback module, or each sub-coupling port of each RF module is connected to a coupling output port, and the coupling output port is connected to the power detection feedback module.

4. The radio frequency system according to claim 1 or 2, characterized in that: The at least two RF circuits include a first RF circuit and a second RF circuit, and the at least two power detection feedback modules include a first power detection feedback module and a second power detection feedback module; the coupling output port of the first RF circuit is connected to the first power detection feedback module, and the coupling output port of the second RF circuit is connected to the second power detection feedback module.

5. The radio frequency system according to claim 1 or 2, characterized in that: The radio frequency system further comprises: a receiving module and at least two transmitting modules; The receiving module is used to demodulate the received signal and determine the signal quality information and signal frequency band; The control circuit is further used to determine the transmission signal of each transmission link according to the signal quality information and the signal frequency band; Each transmitting module is used to modulate the transmission signal of each transmitting link and determine each modulated signal.

6. The radio frequency system according to claim 1 or 2, characterized in that: The radio frequency system also includes at least two transmitting modules, and the radio frequency circuit includes a power amplifier and a coupler connected to each other; the input end of the power amplifier is connected to the signal transmitting port of the transmitting module, and the coupling output port of the coupler is connected to the power detection feedback module; The power amplifier is used to amplify the modulated signal of the transmission link where the radio frequency circuit is located, determine the amplified signal, and output it to the antenna component in the transmission link; The coupler is used to send the coupled power of the coupler to the power detection feedback module through a coupled output port.

7. The radio frequency system according to claim 1 or 2, characterized in that: The control circuit is also used to determine each power difference based on the each coupling power and the transmission power of each transmission signal; and, based on the each power difference and a preset coupling factor, determine the next transmission power of the antenna component in each transmission link; wherein the preset coupling factor is positively correlated with the transmission power.

8. The radio frequency system according to claim 1 or 2, characterized in that: The radio frequency system is applied to the following dual-transmission application scenarios: coexistence scenario of fourth-generation mobile communication technology and fifth-generation mobile communication technology, uplink carrier aggregation scenario, dual-card dual-standby scenario and uplink multiple-input multiple-output scenario.

9. A communication method, characterized in that: The method is applied to the radio frequency system according to any one of claims 1 to 8; Amplifying the modulated signals of each transmission link, determining each amplified signal, and outputting them to the antenna components in each transmission link respectively, so as to transmit the amplified signal; Demodulating the feedback signals of the coupled output ports of the respective transmission links to determine respective coupled powers; Determining the next transmission power of each antenna component according to each coupling power; The next transmission power is used in the next process of determining the modulation signal.

10. A terminal device, characterized in that: The terminal device comprises: at least two antenna components, and a radio frequency system as described in any one of claims 1 to 8; the radio frequency system is connected to each antenna component respectively.

11. A chip, characterized in that: The chip comprises the radio frequency system as described in any one of claims 1-8.

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