Radio frequency circuit, control method and related apparatus

Abstract

Embodiments of the present application provide a radio frequency circuit, a control method and related devices, and relate to the technical field of terminals. The radio frequency circuit comprises a radio frequency chip, a radio frequency front-end circuit and an antenna. The radio frequency chip comprises a first type port for receiving a signal from a cellular network and a second type port for receiving a signal from a non-cellular network. The radio frequency front-end circuit comprises a first switch unit, N LNAs and a second switch unit. The radio frequency front-end circuit is configured to connect the antenna, the first LNA and the first type port through the second switch unit and the first switch unit to receive the signal from the cellular network. The first LNA is configured to amplify the signal. Alternatively, the radio frequency front-end circuit is configured to connect the antenna, the first LNA and the second type port through the second switch unit and the first switch unit to receive the signal from the non-cellular network. The first LNA is configured to amplify the signal. The cellular signal and the non-cellular signal share the LNA, thereby reducing the number of LNAs and the occupied area.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to radio frequency circuits, control methods and related devices. Background Technology

[0002] Mobile phones and other electronic devices support multiple communication methods. These methods can include cellular communication, GNSS, Wi-Fi, BitTorrent, satellite, and UWB.

[0003] Currently, each communication method has its own set of radio frequency front-end circuits to process the radio frequency signals received by the antenna in the electronic device.

[0004] However, multiple sets of RF front-end circuits occupy a large area of ​​the printed circuit board (PCB) in electronic devices, resulting in a larger size of the electronic devices. Summary of the Invention

[0005] This application provides a radio frequency (RF) circuit, a control method, and related apparatus, applicable to the field of terminal technology. This RF circuit can reduce the area occupied by the circuit board in electronic devices, thus facilitating the miniaturization of electronic devices.

[0006] In a first aspect, embodiments of this application provide a radio frequency (RF) circuit. The RF circuit includes: an RF chip, an RF front-end circuit, and an antenna; the RF chip includes a first type of port and a second type of port, the first type of port being used to receive signals from a cellular network, and the second type of port being used to receive signals from a non-cellular network; the RF front-end circuit includes: a first switching unit, N low-noise amplifiers (LNAs), and a second switching unit, where N is an integer greater than or equal to 1; the first switching unit is connected between the RF chip and the N LNAs, and the second switching unit is connected between the N LNAs and the antenna.

[0007] The second switching unit is configured to connect the antenna to the first LNA when a signal from a cellular network is received, so that the first LNA amplifies the signal from the cellular network received by the antenna; or, to connect the antenna to the first LNA when a signal from a non-cellular network is received, so that the first LNA amplifies the signal from the non-cellular network received by the antenna; the first LNA is any LNA among N low-noise amplifier LNAs. The first switching unit is configured to connect the first LNA to a first type port and disconnect the first LNA from a second type port when the first LNA amplifies the signal from the cellular network; or, to disconnect the first LNA from the first type port and connect the first LNA to a second type port when the first LNA amplifies the signal from the non-cellular network.

[0008] There can be one or more LNAs. The first LNA may correspond to the multiplexed LNAs mentioned below. The first switching unit may correspond to switching unit A mentioned below, and the second switching unit may correspond to switching unit B mentioned below. The first LNA corresponds to the multiplexed LNAs mentioned below. Figure 3 Taking the multiplexed LNA shown as an example, the first switching unit may include: Figure 3 The second switching unit, located between the RF chip and the multiplexed LNA, may include: Figure 3 The switching unit is located between the antenna and the multiplexed LNA.

[0009] In this way, signals from non-cellular networks and signals from cellular networks can reuse the first LNA, reducing the number of LNAs in the RF circuit and reducing the area of ​​the RF circuit.

[0010] In one possible implementation, the radio frequency circuit further includes: a control unit; the control unit is configured to, upon receiving a first message, control a second switching unit to connect the antenna to the target LNA, so that the target LNA amplifies the first signal received by the antenna from the non-cellular network; wherein the first message is used to instruct the activation of a first communication service in the non-cellular network, the first signal is used to transmit data of the first communication service, the target LNA is any LNA in the second LNA, and the second LNA is any LNA in the first LNA corresponding to the frequency band of the first signal; the control unit is further configured to, upon receiving the first message, control a first switching unit to connect the target LNA to a first port in the second type of port, the first port being used to receive the first signal.

[0011] The second LNA can be one or more. The first message can correspond to usage request A below. The first communication service can correspond to positioning service or high-precision positioning service below, without specific limitations here.

[0012] In this way, when communication services are enabled on a non-cellular network, a target LNA can be selected from the multiplexed first LNA, and the radio frequency front-end circuit can be configured to realize the data transmission of communication services.

[0013] In one possible implementation, the control unit is further configured to obtain status information of each first LNA, the status information being used to indicate whether the LNA is in an on state or in a off state; the target LNA is any LNA in the second LNA that is in an off state.

[0014] By selecting a target LNA that is in a closed state, the impact of the first communication service on the data transmission of cellular network communication services in electronic devices can be reduced, as well as the impact on the data transmission of other communication services in non-cellular networks.

[0015] In one possible implementation, the priority of the first communication service is the first priority; the control unit is further configured to obtain the communication service corresponding to the signal amplified by each second LNA, and the priority corresponding to each communication service; when all second LNAs are in the on state, the target LNA is any LNA among the third LNAs, and the third LNA is the LNA whose priority of the communication service corresponding to the signal amplified by the second LNA is lower than the first priority.

[0016] In this way, when all first LNAs are enabled, selecting the target LNA from the LNAs corresponding to lower-priority communication services can reduce the impact of the first communication service on higher-priority cellular network communication services and / or higher-priority non-cellular network communication services, thereby improving the user experience.

[0017] In one possible implementation, the control unit is further configured to obtain usage information for each first LNA, the usage information indicating the usage duration of the LNA within a preset time period, the usage duration being the duration the LNA is in the on state; when all second LNAs are in the on state, the target LNA is the third LNA with the lowest usage duration.

[0018] In this way, selecting fewer LNAs can reduce the impact of primary communication services on higher-priority cellular network communication services and / or higher-priority non-cellular network communication services, thereby improving the user experience.

[0019] In one possible implementation, the control unit is further configured to acquire control signaling from the radio frequency chip or modem, the control signaling being configured to enable or disable each first LNA; specifically, the control unit is configured to parse the control signaling to obtain the status information of each first LNA.

[0020] In this way, obtaining the status information of each first LNA through control signaling is a simple and easy method to implement.

[0021] In one possible implementation, the control signaling corresponds to a timestamp; the control unit is also used to calculate the usage duration of each first LNA in the on state within a preset time period based on the timestamp and the status information of each first LNA, and update the usage information of each first LNA.

[0022] In this way, the usage duration of each first LNA can be obtained through control signaling and corresponding timestamp updates, which is simple and easy to implement.

[0023] In one possible implementation, a control unit is configured to, upon receiving a second message, control a second switching unit to connect the antenna to the target LNA; wherein the second message is configured to instruct the first communication service in the non-cellular network to be turned off; and the control unit is configured to, upon receiving the second message, control a first switching unit to connect the target LNA to a first type port.

[0024] In some embodiments, the control unit can also adjust the state of the target LNA according to cellular control signaling. When the cellular control signaling instructs the target LNA to amplify the cellular signal, the target LNA is controlled to be in the on state; when the cellular control signaling instructs the target LNA not to amplify the cellular signal, the target LNA is controlled to be in the off state. For details, please refer to the corresponding description below, which will not be repeated here.

[0025] In this way, when the first communication service is shut down, the signal is switched back to the receiving path corresponding to the cellular network, which facilitates the use of the cellular network signal in the future.

[0026] In one possible implementation, the RF front-end circuit further includes: a filtering unit; the filtering unit is connected between the first LNA and the antenna; the filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the second type port are connected to obtain a signal from the non-cellular network; or, the filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the first type port are connected to obtain a signal from the cellular network.

[0027] In this way, filtering can be performed through the same filtering unit, the filtering unit can be reused, the number of filtering units in the path can be reduced, and the area occupied by the radio frequency circuit can be reduced.

[0028] In one possible implementation, the filtering unit includes: a first filtering unit and a second filtering unit; the first filtering unit is connected between the second switching unit and the first LNA; the second filtering unit is connected between the second switching unit and the first LNA; the first filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the second type port are connected to obtain the signal from the non-cellular network; the second filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the first type port are connected to obtain the signal from the cellular network.

[0029] In this way, signals from cellular networks and non-cellular networks are filtered by different filtering units, improving the filtering effect of each signal.

[0030] In one possible implementation, the RF front-end circuit further includes: a third filtering unit connected between the second type port and the first switching unit; the third filtering unit is used to filter the signal from the non-cellular network amplified by the first LNA to obtain the filtered signal from the non-cellular network.

[0031] This allows for filtering of the amplified non-cellular network signal, improving the signal purity and reducing interference.

[0032] Secondly, embodiments of this application provide a control method applied to a radio frequency circuit described in any possible implementation of the first or second aspect. The method includes: a control unit receiving a first message, the first message indicating the activation of a first communication service in a non-cellular network; upon receiving the first message, the control unit controlling a second switching unit to connect an antenna to a target LNA, such that the target LNA amplifies a first signal received by the antenna from the non-cellular network; wherein the first message indicates the activation of the first communication service in the non-cellular network, the first signal is used to transmit data of the first communication service, the target LNA is any LNA in a second set of LNAs, and the second LNA is any LNA in the first set of LNAs corresponding to the frequency band of the first signal; upon receiving the first message, the control unit controlling a first switching unit to connect the target LNA to a first port in a second type of port in the radio frequency chip, the first port being used to receive the first signal.

[0033] In one possible implementation, before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: the control unit obtaining status information of each first LNA, the status information being used to indicate whether the LNA is in an on state or in a off state; the target LNA is any LNA among the second LNAs that is in a off state.

[0034] In one possible implementation, the priority of the first communication service is the first priority; before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: the control unit obtains the communication service corresponding to the signal amplified by each second LNA, and the priority corresponding to each communication service; when all second LNAs are in the on state, the target LNA is any LNA among the third LNAs, and the third LNA is the LNA whose communication service corresponding to the signal amplified by the second LNA has a lower priority than the first priority.

[0035] In one possible implementation, before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: the control unit obtaining usage information of each first LNA, the usage information being used to indicate the usage duration of the LNA within a preset time period, the usage duration being the duration during which the LNA is in the on state; and when all second LNAs are in the on state, the target LNA is the third LNA with the lowest usage duration.

[0036] In one possible implementation, the control unit obtains the status information of each first LNA, including: the control unit obtains control signaling from the radio frequency chip or modem, the control signaling being used to configure each first LNA to be in an on state or in an off state; the control unit parses the control signaling to obtain the status information of each first LNA.

[0037] In one possible implementation, the control signaling corresponds to a timestamp; the control unit obtains the usage information of each first LNA, including: the control unit calculates the usage duration of each first LNA in the open state within a preset time period based on the timestamp and the status information of each first LNA, and updates the usage information of each first LNA.

[0038] In one possible implementation, the method further includes: upon receiving a second message, the control unit controls a second switching unit to connect the antenna to the target LNA; wherein the second message is used to instruct the first communication service in the non-cellular network to be turned off; and upon receiving the second message, the control unit controls a first switching unit to connect the target LNA to a first type port.

[0039] Thirdly, embodiments of this application provide an electronic device, including: the radio frequency circuit described in the first aspect or any possible implementation of the first aspect.

[0040] Fourthly, embodiments of this application provide an electronic device including a processor and a memory, the memory for storing code instructions, and the processor for executing the code instructions to perform the methods described in the second aspect or any possible implementation of the second aspect.

[0041] Fifthly, embodiments of this application provide a computer-readable storage medium storing a computer program or instructions that, when executed on a computer, cause the computer to perform the methods described in the second aspect or any possible implementation thereof.

[0042] In a sixth aspect, embodiments of this application provide a computer program product including a computer program, which, when run on a computer, causes the computer to perform the methods described in the second aspect or any possible implementation thereof.

[0043] In a seventh aspect, this application provides a chip or chip system including at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is used to run computer programs or instructions to perform the methods described in the second aspect or any possible implementation thereof. The communication interface in the chip can be an input / output interface, pins, or circuits, etc.

[0044] In one possible implementation, the chip or chip system described above in this application further includes at least one memory storing instructions. The memory can be an internal storage unit of the chip, such as a register or cache, or it can be a storage unit of the chip itself (e.g., read-only memory, random access memory, etc.).

[0045] It should be understood that the second to seventh aspects of this application correspond to the technical solutions of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0046] Figure 1 A schematic diagram of the structure of a radio frequency circuit in a possible design;

[0047] Figure 2 This is a schematic diagram of a cellular FEM structure provided in an embodiment of this application;

[0048] Figure 3 This is a schematic diagram of the structure of an FEM provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the structure of a radio frequency circuit provided in an embodiment of this application;

[0050] Figure 5 This is a schematic diagram of the structure of an FEM provided in an embodiment of this application;

[0051] Figure 6 This application provides a schematic diagram of the structure of an FEM that corresponds to two multiplexed LNAs for an L5 signal;

[0052] Figure 7 This is a schematic diagram of the structure of a control unit provided in an embodiment of this application;

[0053] Figure 8 This is a schematic diagram of the structure of a radio frequency circuit provided in an embodiment of this application;

[0054] Figure 9 A flowchart illustrating a control method for enabling GNSS services, provided in an embodiment of this application;

[0055] Figure 10 This is a flowchart illustrating a control method for shutting down GNSS services, provided as an embodiment of this application. Detailed Implementation

[0056] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0057] 1. Frequency band: The frequency range of radio waves (radio frequency signals). It should be noted that the frequency band below 1 gigahertz (GHz) is generally called the low frequency band, the frequency band from 1 GHz to 2.2 GHz is called the medium frequency band, and the frequency band above 2.3 GHz is called the high frequency band.

[0058] 2. Modem (MDM): Responsible for the conversion and encoding / decoding of baseband signals.

[0059] 3. Radio Frequency (RF) Chip (transceiver): Used to output RF signals and process RF signals received by the antenna. Signal processing includes, but is not limited to, frequency conversion, demodulation, and analog-to-digital conversion. In essence, an RF chip can convert baseband signals from a modem into RF signals; an RF chip can convert RF signals received by the antenna back into baseband signals for subsequent processing. RF chips can also be called RF transceivers, RF transceiver units, etc., without specific limitations here.

[0060] Radio frequency (RF) chips may include frequency-division duplexers (FDD), time-division duplexers (TDD), switches, and / or combiners. Both FDD and TDD are used to separate transmitted and received signals in a path, reducing interference between them. Switches and combiners can split a single signal into two, facilitating subsequent separation and processing of different signals. This application does not limit or describe the RF signal processing procedures in its embodiments.

[0061] 4. Antenna: A transducer. An antenna is used to convert radio frequency (RF) signals into electromagnetic waves of a corresponding wavelength and radiate them into the air, and / or to receive electromagnetic waves and convert them into corresponding RF signals. It is understood that the same antenna can both transmit and receive RF signals. RF signals can include cellular signals and GNSS signals, etc.

[0062] 5. Baseband: This refers to the inherent frequency band (bandwidth) of the original electrical signal emitted by the information source that has not undergone modulation (spectral shifting and transformation). A baseband signal is the original electrical signal that has not undergone modulation (spectral shifting and transformation).

[0063] 6. Cellular Communication System: A communication system that uses a cellular wireless networking method. Specifically, a cellular communication system divides the communication area into multiple smaller coverage units. Each unit is called a cell, and each cell has a base station providing communication services. A cellular communication system may include: terminal equipment, base stations, core networks, and operator networks, etc.

[0064] In this embodiment, the cellular communication system may include: a 2G cellular communication system, a 3G cellular communication system, a 4G cellular communication system, a 5G cellular communication system, or a future evolved cellular communication system. A cellular communication system may also be referred to as a cellular network. The radio frequency signals in the cellular communication system may be referred to as cellular network signals or cellular signals. No limitation is made here.

[0065] 7. Non-cellular communication systems: Wireless communication systems that do not employ cellular wireless networking methods. Non-cellular communication systems can use point-to-point communication, broadcast communication, mesh networks, etc. Non-cellular communication systems can also be called non-cellular networks. The radio frequency signals in non-cellular communication systems can be called non-cellular network signals or non-cellular signals. No specific definition is made here.

[0066] In this embodiment, the non-cellular communication system may include: Global Navigation Satellite System (GNSS), Wireless Fidelity (WIFI), Bluetooth (BT), satellite communication systems, Ultra Wide Bandwidth (UWB), etc. Adaptively, the signals of the non-cellular network may include: GNSS signals, WIFI signals, BT signals, UWB signals, etc.

[0067] 8. Other terms

[0068] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with substantially the same function and purpose. For example, "first chip" and "second chip" are used only to distinguish different chips and do not limit their order of execution. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply that they are different.

[0069] It should be noted that, in the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0070] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, and c can be single or multiple.

[0071] 9. Electronic equipment

[0072] The electronic devices in this application embodiment may include handheld devices with communication functions, vehicle-mounted devices, etc. For example, some electronic devices include: mobile phones, tablets, PDAs, laptops, mobile internet devices (MIDs), wearable devices (e.g., smartwatches, smart glasses, smart bracelets, or smart jewelry), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, and the Internet of Things (IoT). Terminal devices in IoT systems, terminal devices in 5G networks, or terminal devices in future public land mobile networks (PLMNs) are not limited to this category in the embodiments of this application.

[0073] The electronic devices in the embodiments of this application may also be referred to as: terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0074] In this embodiment, the electronic device or various network devices include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software.

[0075] Mobile phones and other electronic devices can support cellular communication under multiple communication standards, as well as non-cellular communication under one or more communication standards. For example, cellular communication may include 2G communication, 3G communication, 4G communication, and 5G communication; non-cellular communication may include GNSS, WIFI, Bluetooth, satellite, or UWB.

[0076] It should be noted that electronic devices transmit and process radio frequency (RF) signals through a front-end module (FEM). The RF front-end module can include power amplifiers (PAs), low-noise amplifiers (LNAs), filters, and radio frequency switches (ASMs).

[0077] In a possible design, the electronic device incorporates multiple FEMs to enable both cellular and non-cellular communication. Alternatively, for non-cellular communication, the electronic device is equipped with a completely independent FEM separate from the cellular one.

[0078] For example, Figure 1 This is a schematic diagram of a possible radio frequency circuit design. Taking cellular communication and GNSS communication as examples, such as... Figure 1 As shown, the radio frequency circuit includes: radio frequency chip 101, cellular FEM 102, GNSS FEM 103, antenna 104 and antenna 105.

[0079] Cellular FEM 102 and GNSS FEM 103 are both connected to RF chip 101, cellular antenna 104 is connected to cellular FEM 102, and GNSS antenna 105 is connected to GNSS FEM 103;

[0080] The radio frequency chip 101 is used to process the cellular signals received by the antenna 104; the radio frequency chip 101 is also used to process the GNSS signals received by the antenna 105.

[0081] Cellular signals can be understood as radio frequency signals transmitted by cellular communication systems. Cellular signals can include signals transmitted by cellular communication systems under various communication standards such as 2G, 3G, 4G, and 5G.

[0082] GNSS signals can be understood as radio frequency signals transmitted by a global navigation satellite system. GNSS signals can include signals in the L1 band (L1 signals) and L5 band (L5 signals), etc. GNSS signals can also include signals in more frequency bands, such as L2 band (L2 signals), etc. For example, the center frequency of the L1 band is 1575.42 MHz; the center frequency of the L5 band is 1176.45 MHz; and the center frequency of the L2 band is 1227.60 MHz. No specific limitations are made here.

[0083] Cellular FEM 102 is used to filter and amplify the radio frequency signals received by antenna 104 to obtain cellular signals.

[0084] Cellular FEM 102 includes: switch 1021, low-noise amplifier (LNA) 1022, filter 1023, and antenna switch module (ASM) 1024.

[0085] The GNSS FEM 103 is used to filter and amplify the radio frequency signal received by the antenna 105 to obtain the GNSS signal. The GNSS FEM 103 includes a low-noise amplifier (LNA) 1031 and a filter 1032.

[0086] It should be noted that GNSS signals are used to provide positioning services and do not require the transmission of radio frequency signals. Therefore, the GNSS FEM103 may not include a power amplifier. For non-cellular signals under other communication standards, the corresponding radio frequency front-end circuit may include a power amplifier to meet the transmission power requirements of the radio frequency signal.

[0087] Antenna 104 is used to transmit cellular signals or receive radio frequency signals, including cellular signals. There may be one or more antennas 104, which is not specifically limited here.

[0088] Antenna 105 is used to transmit signals or receive radio frequency signals, including GNSS signals. There may be one or more antennas 105, which is not specifically limited here.

[0089] The following is combined with Figure 1 The process of receiving cellular signals and GNSS signals is explained.

[0090] Cellular signal reception process: The radio frequency signal received by the antenna 104 is transmitted to the filter 1023 through the radio frequency switch 1024 to filter out noise and obtain the cellular signal; the cellular signal enters the LNA 1022 for signal amplification and is transmitted to the radio frequency chip 101.

[0091] The GNSS signal reception process: The radio frequency signal received by the antenna 105 is filtered out by the filter 1032 to obtain the GNSS signal; the GNSS signal enters the LNA 1031 for signal amplification and is transmitted to the radio frequency chip 101.

[0092] from Figure 1 As can be seen from the radio frequency circuit shown, the reception of cellular signals and the reception of GNSS signals correspond to different FEMs. The radio frequency circuit has many components, which makes the radio frequency circuit occupy a large area.

[0093] For ease of description, the transmission path of the RF signal received by the antenna in the FEM will be referred to as the receiving path. The receiving path typically includes an RF switch, a filter, and an LNA. Other components may also be included, such as duplexers and combiners. No specific limitations are made here. For example, using... Figure 1 Taking the radio frequency circuit shown as an example, the cellular signal receiving path includes: radio frequency switch 1024, filter 1023, LNA 1022, and switch 1021. The GNSS signal receiving path includes: filter 1032 and LNA 1031.

[0094] It should be noted that due to various limitations such as the operator, the communication services activated on the electronic device, and the communication services currently in use (already activated communication services), the electronic device may not utilize all frequency bands of cellular signals. Consequently, the receiving path of unused frequency bands of cellular signals may be idle, and the LNA in this receiving path may be turned off and not amplifying the signal. Therefore, the FEM resource utilization rate in the electronic device is low.

[0095] For example, taking operator A as an example, electronic devices may not use the receiving path corresponding to the N79 signal in cellular signals, and will not use the LNA corresponding to the N79 signal; taking the case where satellite communication services are not available, and satellite communication services correspond to S-band signals as an example, electronic devices may not use the receiving path corresponding to the S-band signals, and will not use the LNA corresponding to the S-band signals. The frequency range corresponding to S-band signals is 2483.5MHz to 2500MHz.

[0096] For example, consider carrier restrictions and communication service restrictions. Figure 2 This is a schematic diagram of a cellular FEM structure provided in an embodiment of this application. Figure 2As shown, the cellular FEM includes: LNA-201 and LNA-202. For easy differentiation, Figure 2 LNA-201 is filled with black; LNA-202 is filled with white.

[0097] LNA-201 is the LNA in the receiving path corresponding to the cellular signal of the currently used communication service, which can also be understood as the LNA being used by the electronic device; LNA-202 is the LNA in the receiving path corresponding to the cellular signal not supported by the operator, which can also be understood as the LNA in the electronic device that is in an idle state. It can be understood that the filters and RF switches in the receiving path where LNA-202 is located are in an idle state.

[0098] In view of this, embodiments of this application provide a radio frequency circuit, a control method, and related apparatus. The LNA in the cellular receiving path is multiplexed using time division multiplexing. This LNA is used to amplify cellular signals or non-cellular signals. The LNAs in the non-cellular communication receiving path are the same as those in the cellular receiving path, and are time-division multiplexed to reduce the area and cost of the radio frequency front-end circuitry and improve the utilization rate of radio frequency front-end resources.

[0099] It should be noted that LNAs used in cellular communication are typically wideband LNAs. Some LNAs have sufficient gain and bandwidth to amplify non-cellular signals. Therefore, LNAs in the cellular receiver path can be used to amplify non-cellular signals.

[0100] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be implemented independently or in combination with each other. The same or similar concepts or processes may not be described again in some embodiments.

[0101] The following uses non-cellular communication, specifically GNSS communication, as an example to illustrate different receiving paths for the same LNA in a FEM. For example, Figure 3 This is a schematic diagram of the structure of an FEM provided in an embodiment of this application. Figure 3 As shown, the FEM includes: a filter unit 301, a switch unit 302, a multiplexed LNA 303, a switch unit 304, a filter unit 305, a filter unit 306, and an RF switch 307.

[0102] One end of the filtering unit 301 is connected to the port in the RF chip used for receiving GNSS signals; the other end of the filtering unit 301 is connected to port a1 of the switching unit 303; port a2 of the switching unit 303 is connected to the port in the RF chip used for receiving cellular signals; port a3 of the switching unit 303 is connected to the output of the multiplexed LNA 303; the input of the multiplexed LNA 303 is connected to port b1 of the switching unit 304; port b2 of the switching unit 304 is connected to one end of the filtering unit 305; the other end of the filtering unit 305 is connected to port c1 of the RF switch 307; port b3 of the switching unit 304 is connected to one end of the filtering unit 306; the other end of the filtering unit 306 is connected to port c2 of the RF switch 307; port c3 of the RF switch 307 is connected to the GNSS antenna; port c4 of the RF switch 307 is connected to the cellular antenna. The cellular antenna is used to receive GNSS signals; the GNSS antenna is used to receive GNSS signals.

[0103] The filtering unit 301 is used to filter the amplified GNSS signal to obtain a filtered GNSS signal. This further improves the purity of the GNSS signal. The filtering unit 301 includes any device with filtering function, such as a filter, a lumped element network with filtering function, a duplexer, etc.

[0104] The switching unit 302 is used to control the connection between port a1 and port a3 to connect the filter unit 301 and the multiplexed LNA 303, or to control the connection between port a2 and port a3 to connect the multiplexed LNA 303 and the port in the RF chip used to receive cellular signals.

[0105] The multiplexed LNA 303 is used to amplify the GNSS signal when GNSS service is enabled, or to amplify the cellular signal when GNSS service is disabled. In this embodiment, the multiplexed LNA 303 is an LNA used in cellular communication.

[0106] For example, taking the L1 signal in GNSS communication as an example, the multiplexed LNA 303 can be an LNA for cellular signals in one or more of the following frequency bands: B1, B2, B3, B4, B9, B10, B11, B21, B24, B25, B33, B34, B39, B45, etc. Taking the L5 signal in GNSS communication as an example, the multiplexed LNA 303 can be an LNA for cellular signals in one or more of the following frequency bands: B1, B2, B3, B4, B9, B10, B11, B21, B24, B25, B33, B34, B39, B45, etc. This application embodiment does not specifically limit the frequency band of the cellular signal amplified by the multiplexed LNA 303.

[0107] Filtering unit 305 is used to filter the radio frequency signal received by the GNSS antenna to obtain the GNSS signal; filtering unit 306 is used to filter the radio frequency signal received by the cellular antenna to obtain the cellular signal. The structures of filtering unit 305 and filtering unit 306 can be referred to the filtering unit 301 described above, and will not be repeated here.

[0108] RF switch 307 is used to control the connection between port c1 and port c3 to connect filter unit 305 and GNSS antenna, or to control the connection between port c2 and port c4 to connect filter unit 306 and cellular antenna.

[0109] The following is combined with Figure 3 The process of receiving cellular signals and GNSS signals is explained.

[0110] The GNSS signal reception process: The radio frequency signal received by the GNSS antenna is transmitted to the filtering unit 305 through ports c3 and c1 of the radio frequency switch 307 for filtering to obtain the GNSS signal. The GNSS signal then enters the multiplexing LNA 303 through ports b2 and b1 of the switching unit 304 for signal amplification to obtain the amplified GNSS signal. The amplified GNSS signal is then transmitted to the filtering unit 301 through the output of the multiplexing LNA 303, ports a3 and a1 of the switching unit. The filtering unit 301 filters the amplified GNSS signal and transmits it to the radio frequency chip 101.

[0111] Cellular signal reception process: The radio frequency signal received by the cellular antenna is transmitted to the filtering unit 306 for filtering via ports C4 and C2 of the radio frequency switch 307 to obtain the cellular signal; the cellular signal is then amplified by the multiplexing LNA 303 via ports B3 and B1 of the switching unit 304 to obtain the amplified cellular signal. The amplified cellular signal is then transmitted to the radio frequency chip 101 via the output of the multiplexing LNA 303, ports A3 and A2 of the switching unit.

[0112] In this way, GNSS signals and cellular signals can be time-division multiplexed using the same LNA, reducing the number of LNAs in the RF circuit and reducing the area of ​​the RF circuit.

[0113] It is understandable that when the radio frequency circuit includes multiple multiplexed LNAs 303, the switching units 302 in the receiving path of each multiplexed LNA 303 can exist independently or be combined together.

[0114] In this embodiment of the application, the switching units 302 in the receiving paths of each multiplexed LNA 303 in the FEM can be collectively referred to as a combined switching unit A. Switching unit A is used to connect the multiplexed LNA to the port in the radio frequency chip used for receiving GNSS signals and disconnect the multiplexed LNA from the port in the radio frequency chip used for receiving cellular signals when the multiplexed LNA amplifies the GNSS signal; or, it is used to disconnect the multiplexed LNA from the port in the radio frequency chip used for receiving GNSS signals and connect the multiplexed LNA to the port in the radio frequency chip used for receiving cellular signals when the multiplexed LNA amplifies the cellular signal.

[0115] The switching units 304 in the receiving paths of each multiplexed LNA 303 can exist independently or be combined together;

[0116] The switching units 304 in the receiving paths of each multiplexed LNA 303 can be collectively referred to as switching unit B. Switching unit B is used to connect the multiplexed LNA to the GNSS antenna when receiving GNSS signals, so that the multiplexed LNA amplifies the GNSS signals; or to connect the multiplexed LNA to the cellular antenna when receiving cellular signals, so that the multiplexed LNA amplifies the cellular signals.

[0117] The filtering unit 305 in the receiving path of each multiplexed LNA 303 can exist independently or be combined together; the filtering unit 306 in the receiving path of each multiplexed LNA 303 can exist independently or be combined together, without specific limitations here.

[0118] For ease of description, the transmission path in the FEM corresponding to the multiplexing of LNA to amplify GNSS signals will be referred to as the receiving path A of that LNA; the transmission path in the FEM corresponding to the multiplexing of LNA to amplify cellular signals will be referred to as the receiving path B of that LNA.

[0119] like Figure 3 As shown, receiving path A may include: RF switch 307, filter unit 305, switch unit 304, multiplexed LNA 303, switch unit 302, and filter unit 301. Receiving path B may include: RF switch 307, filter unit 306, switch unit 304, multiplexed LNA 303, and switch unit 302.

[0120] In some embodiments, filter unit 305 and filter unit 306 are the same filter unit. Adaptably, ports b2 and b3 of switch unit 304 are the same port, and ports c1 and c2 of RF switch 307 are the same port. Alternatively, switch unit 304 may not be included, and LNA 303 may be multiplexed and connected to filter unit 305. In this way, GNSS signals and cellular signals can reuse the same filter unit, reducing the number of filter units in the RF circuit and reducing the area of ​​the RF circuit.

[0121] It should be noted that the filtering requirements for cellular signals and GNSS signals differ; for example, their bandwidth and power requirements differ. When multiplexing cellular signal filtering units for GNSS signals, the multiplexed filtering units must meet both the GNSS signal's filtering requirements and those of GNSS signals. For example, the insertion loss, gain, and bandwidth of the multiplexed filtering units must all meet the GNSS signal's filtering requirements. Multiplexing will not occur if the filtering unit does not meet the GNSS signal's filtering requirements.

[0122] In some embodiments, the cellular antenna and the GNSS antenna are the same antenna. Adaptively, ports c3 and c4 of the RF switch 307 are the same port. In this way, GNSS signals and cellular signals can reuse the same antenna, reducing the number of antennas in the RF circuit and reducing the area of ​​the RF circuit.

[0123] In some embodiments, the receiving path A may not include the filter unit 301. This reduces the number of filter units in the radio frequency circuit and reduces the area of ​​the radio frequency circuit.

[0124] In some embodiments, the RF switch 307 may not be included in the receiving path A. This reduces the number of RF switches in the RF circuit and reduces the area of ​​the RF circuit.

[0125] The following is combined with Figures 4 to 8 The radio frequency circuits provided in the embodiments of this application will be described.

[0126] For example, taking non-cellular communication, specifically GNSS communication, Figure 4 This is a schematic diagram of a radio frequency circuit provided in an embodiment of this application. Figure 4 As shown, the radio frequency circuit includes: a radio frequency chip 401, an FEM 402, an antenna 403, a control unit 404, and an application processor (AP) 405. The radio frequency chip 401 is connected to the FEM 402, and the FEM 402 is connected to the antenna 403; the radio frequency chip 401 is also connected to the control unit 404, and the control unit 404 is connected to the application processor 405.

[0127] Radio frequency (RF) chip 401 is used to process cellular signals and / or GNSS signals received by antenna 403. RF chip 401 includes a port for transmitting cellular signals and a port for transmitting GNSS signals.

[0128] A port used for transmitting cellular signals may include multiple ports. These multiple ports may be used to transmit cellular signals of different frequency bands. For example, these multiple ports may include: a port for transmitting B1 signals, a port for transmitting B24 signals, a port for transmitting B34 signals, etc., without specific limitations here.

[0129] These multiple ports can be used to transmit cellular signals of different frequency bands under the same standard, or they can be used to transmit cellular signals of different standards, such as 2G signals, 3G signals, 4G signals, 5G signals, etc. No specific limitation is made here.

[0130] Ports used for transmitting GNSS signals may include one or more of the following: ports for transmitting L1 signals and ports for transmitting L5 signals.

[0131] Antenna 403 is used to receive cellular signals and / or GNSS signals. Antenna 403 may include one or more cellular antennas and one or more GNSS antennas.

[0132] In some embodiments, the cellular antenna and the GNSS antenna can be the same. This reduces the number of antennas in the RF circuitry and the area occupied by the RF circuitry. Conversely, if the cellular antenna and the GNSS antenna are not the same, interference between cellular and GNSS signals can be reduced.

[0133] FEM 402 is used to amplify, filter, and perform other processing on the cellular signals received by antenna 403, and / or to amplify, filter, and perform other processing on the GNSS signals received by antenna 403.

[0134] The FEM 402 may include: a switching unit A, multiple LNAs, and a switching unit B. Switching unit A is used to connect the ports in the RF chip 401 to each LNA in the FEM 402; switching unit B is used to connect the LNAs and the antenna.

[0135] The multiple LNAs include: multiplexed LNAs and cellular LNAs. Multiplexed LNAs are used to amplify cellular or GNSS signals. Cellular LNAs are used to amplify cellular signals. Each multiplexed LNA corresponds to at least one receive path A and at least one receive path B. Receiver path A and receive path B can be described as described above. Figure 3 The corresponding explanations are provided in the original text and will not be repeated here.

[0136] When the radio frequency circuit receives GNSS signals, it can be connected to the port in the radio frequency chip 401 used for receiving GNSS signals via a GNSS antenna, switch unit B, multiplexed LNA, and switch unit A. The multiplexed LNA is used to amplify the GNSS signal.

[0137] When the radio frequency circuit receives cellular signals, it can be connected to the port in the radio frequency chip 401 used for receiving cellular signals via the cellular antenna, switch unit B, multiplexed LNA, and switch unit A. The multiplexed LNA is used to amplify the cellular signals.

[0138] In this way, by switching the connection of switch unit A and switch unit B, the receiving path of each LNA can be switched, thereby enabling the reception of GNSS signals or cellular signals.

[0139] In some embodiments, FEM 402 can be obtained by modifying the cellular FEM. This reduces the need for redesigning FEM 402 and lowers design complexity. Furthermore, the cellular FEM can still be used, reducing waste. For example, FEM 402 can be obtained by adding switches, filter units, or other devices to the cellular FEM, and / or by connecting filter units, switches, or other devices located outside the cellular FEM via pins. No specific limitations are made here.

[0140] For example, GNSS communication includes L1 signals and L5 signals, each corresponding to a multiplexed LNA. Figure 5 As shown, FEM 402 may include: filter 21, filter 22, switch 23, switch 24, LNA 25, LNA 26, and switches corresponding to LNA 25 and LNA 26, filter 29, filter 30, cellular filter unit 31, and switch 32. Antenna 403 includes: cellular antenna and GNSS antenna. Cellular antenna includes: antenna 33 and antenna 34; GNSS antenna includes: antenna 35 and antenna 36.

[0141] LNA 25 is used to amplify the L1 signal or cellular signal. The receiving path A corresponding to LNA 25 may include: filter 29, the switch corresponding to LNA 25, LNA 25, switch 24, switch 23, and filter 21. The receiving path B corresponding to LNA 25 may include: switch 32, cellular filter unit 31, the switch corresponding to LNA 25, LNA 25, switch 24, and switch 23. This allows for the multiplexing of LNA 25 in the RF front-end circuit, reducing the number of LNAs in the FEM and the footprint of the RF circuit.

[0142] In some embodiments, when the cellular filter unit 31 meets the filtering requirements of the L1 signal, such as bandwidth, insertion loss, and attenuation, the receiving path A corresponding to the LNA 25 may include the cellular filter unit 31, but not the filter 29. This reduces the number of filters in the FEM and decreases the footprint of the RF circuitry.

[0143] In some embodiments, when antenna 33 or antenna 34 can receive the L1 signal, the receiving path A corresponding to LNA 25 may include antenna 33 or antenna 34, but not antenna 35. This reduces the number of antennas in the RF circuit and decreases the area occupied by the RF circuit.

[0144] In some embodiments, the receiving path A corresponding to LNA 25 may not include filter 21. This reduces the number of filters in the FEM and the footprint of the RF circuitry.

[0145] LNA 26 is used to amplify L5 signals or cellular signals. The receiving path A corresponding to LNA 26 may include: filter 30, the switch corresponding to LNA 26, LNA 26, switch 24, switch 23, and filter 22. The receiving path B corresponding to LNA 26 may include: switch 32, cellular filter unit 31, the switch corresponding to LNA 26, LNA 26, switch 24, and switch 23. This allows for the multiplexing of LNA 26 in the RF front-end circuit, reducing the number of LNAs in the FEM and reducing the footprint of the RF circuit.

[0146] In some embodiments, when the cellular filter unit 31 meets the filtering requirements of the L5 signal, such as bandwidth, insertion loss, and attenuation, the receiving path A corresponding to the LNA 26 may include the cellular filter unit 31 and the switch 32, but does not include the filter 30. This reduces the number of filters in the FEM and decreases the footprint of the RF circuitry.

[0147] In some embodiments, when antenna 33 or antenna 34 can receive L5 signals, the receiving path A corresponding to LNA 26 may include antenna 33 or antenna 34, but not antenna 36. This reduces the number of antennas in the RF circuit and decreases the area occupied by the RF circuit.

[0148] In some embodiments, the receiving path A corresponding to LNA 26 may not include filter 22. This reduces the number of filters in the FEM and the footprint of the RF circuitry.

[0149] In some embodiments, FEM 402 further includes a cellular LNA. The cellular LNA is used to amplify cellular signals, not GNSS signals; it can also be understood that the cellular LNA does not correspond to a receiving path A. For example, as... Figure 5 As shown, FEM 402 also includes LNA 27 and LNA 28. Both LNA 27 and LNA 28 are used to amplify cellular signals. Neither LNA 27 nor LNA 28 corresponds to receiver path A.

[0150] The receiving path corresponding to LNA 27 may include: switch 32, cellular filter unit 31, switch LNA 27, switch 24, and switch 23 corresponding to LNA 27. The receiving path corresponding to LNA 28 may include: switch 32, cellular filter unit 31, switch LNA 28, switch 24, and switch 23 corresponding to LNA 28.

[0151] Understandable Figure 5 In the FEM, switches 23 and 24 are used to selectively couple the receiving paths of each LNA in the RF front-end circuit to the port in the RF chip 401 used for inputting cellular signals or inputting GNSS signals. Switches 23 and 24 can be collectively referred to as switch unit A. Figure 5 In the FEM, the switches corresponding to LNA 25 and LNA 26 can be collectively referred to as switch unit B.

[0152] In some embodiments, Figure 5 Switches 23 and 24 can be a fully connected MUX switch. This allows the ports on the RF chip used for inputting cellular signals and for inputting GNSS signals to be coupled to the receiving path of any LNA in the FEM. In other embodiments, switches 23 and 24 can be custom switches, with the specific number of ports and connection method related to the number of multiplexed LNAs. This application does not specifically limit the structure of switches 23 and 24.

[0153] Taking GNSS communication as an example, which includes L1 and L5 signals, each corresponding to multiple multiplexed LNAs. For instance, as shown... Figure 4 As shown, FEM 402 includes: switch 16, switch 17, switch 18, switch 19, multiple LNAs, switches corresponding to the LNAs, filter units, and RF switch ASM.

[0154] Switches 16, 17, 18, and 19 are used to connect the ports in the RF chip 401 to each LNA in the FEM 402. The switches corresponding to the LNAs are used to connect the LNAs and the antennas. In this embodiment, switches 16, 17, 18, and 19 can be collectively referred to as switch unit A; the switches corresponding to each LNA can be collectively referred to as switch unit B.

[0155] Multiplexed LNAs can include LNA11, LNA12, LNA13, LNA14, and LNA15. Each of LNA11, LNA12, LNA13, LNA14, and LNA15 corresponds to a receiving path A and a receiving path B. Taking GNSS communication, which includes L1 and L5 signals, as an example, the multiplexed LNAs corresponding to L1 signals can be LNA11, LNA14, and LNA15; the multiplexed LNAs corresponding to L5 signals can be LNA12, LNA13, and LNA15.

[0156] When the radio frequency circuit receives the L1 signal in GNSS communication, it can be connected to the port in the radio frequency chip 401 used for receiving the L1 signal via the GNSS antenna, the switch corresponding to LNA11, LNA14, or LNA15, LNA11, LNA14, or LNA15, switch 17, switch 18, switch 19, or switch 16. LNA11, LNA14, or LNA15 are used to amplify the L1 signal.

[0157] When the radio frequency circuit receives the L5 signal in GNSS communication, it can be connected to the port in the radio frequency chip 401 used for receiving the L5 signal via the GNSS antenna, the switch corresponding to LNA12, LNA13, or LNA15, LNA12, LNA13, or LNA15, switch 17, switch 18, switch 19, or switch 16. LNA12, LNA13, or LNA15 is used to amplify the L5 signal.

[0158] When the radio frequency circuit receives cellular signals in cellular communication, the cellular antenna, the switches corresponding to LNA11 to LNA15, any one of LNA11 to LNA15, any one of switches 17 to 19, and switch 16 are connected to the port in the radio frequency chip 401 used for receiving cellular signals. LNA11, LNA14, or LNA15 is used to amplify the cellular signal. The application processor 405 transmits a usage request to the control unit 404 upon receiving an operation to enable or disable GNSS communication services. Adaptively, upon receiving the usage request, the control unit 404 configures the receiving path of the target LNA in FEM 402 as receiving path A or receiving path B, according to the usage request. The target LNA is one of the multiplexed LNAs. The specific method for confirming the target LNA can be referred to the corresponding description below, and will not be described here.

[0159] For example, the use request may include: an identifier indicating service activation and an identifier indicating service deactivation. Control unit 404 is configured to configure the receiving path of the target LNA in FEM 402 as receiving path A when the use request includes an identifier indicating service activation; control unit 404 is configured to configure the receiving path of the target LNA in FEM 402 as receiving path B when the use request includes an identifier indicating service deactivation.

[0160] It is understandable that GNSS communication can include various types of communication services, such as positioning services and high-precision positioning services. Adaptively, the request may also include an identifier indicating the type of communication service.

[0161] For example, in response to a user's operation to activate a location service, the application processor 405 transmits a usage request A to the control unit 404. This usage request A includes: an identifier for the location service and an identifier indicating that the service has been activated. The user's operation to activate the location service may include: activating an application with location services, activating location functionality, etc. Applications with location services may include: map applications, social applications, etc. Activating location functionality may include: activating real-time location sharing, activating navigation, etc.

[0162] In response to a user's action to disable the location service, the application processor 405 transmits a usage request B to the control unit 404. This usage request B includes: an identifier for the location service and an identifier indicating that the service is disabled. The user's action to disable the location service may include: closing an application with location services, disabling location functionality, etc. This embodiment does not specifically limit the triggering operations for enabling or disabling the service.

[0163] The method for identifying the target LNA is explained below.

[0164] In this embodiment of the application, the control unit 404 can determine the frequency band corresponding to the service based on the service type in the usage request, identify the target LNA in the FEM, and configure the receiving path of the target LNA in the FEM as receiving path A or receiving path B according to the communication service enabled or disabled as indicated by the usage request.

[0165] In some embodiments, the request further includes an identifier for indicating the service type, which can be used to confirm the service type and thus the frequency band corresponding to the service.

[0166] It is understandable that GNSS signals in each frequency band can correspond to one or more multiplexed LNAs, and each multiplexed LNA can correspond to one or more receiving paths A.

[0167] Specifically, the control unit 404 can use the requested service type to determine the frequency band of the GNSS signal, and then confirm the selection of the target LNA from the multiplexed LNAs corresponding to that frequency band.

[0168] For example, the control unit can identify one or more multiplexed LNAs through correspondence A and correspondence B. Correspondence A is the relationship between the identifier of a communication service (e.g., type, index number, etc.) and the frequency band used to transmit that communication service; correspondence B is the relationship between the frequency band of the GNSS signal and the multiplexed LNA. The control unit can obtain correspondence A from the AP or modem. No specific limitations are imposed here.

[0169] For example, in correspondence A, the identifier for the positioning service corresponds to the L1 signal, and the identifier for the high-precision positioning service corresponds to the L5 signal; in correspondence B, the L1 signal corresponds to LNA1, and the L5 signal corresponds to LNA2 to LNA8. When the communication service is a positioning service, the multiplexed LNA is confirmed to be LNA1; when the communication service is a high-precision positioning service, the multiplexed LNA is confirmed to be LNA2 to LNA8.

[0170] In one possible implementation, each frequency band of GNSS signal corresponds to one multiplexed LNA. Figure 5 In the FEM shown, the L1 signal transmits positioning service data, corresponding to LNA 25, and the L5 signal transmits high-precision positioning service data, corresponding to LNA 26. Taking this example, when the control unit 404 receives a request to enable the positioning service, it confirms that the target LNA corresponding to the L1 signal is LNA 25 and configures the receiving path of LNA 25 in FEM 402 as receiving path A. When the control unit 404 receives a request to disable the positioning service, it configures the receiving path of LNA 25 in FEM 402 as receiving path B. Similarly, when the control unit 404 receives a request to enable the high-precision positioning service, it confirms that the target LNA corresponding to the L1 signal is LNA 26 and configures the receiving path of LNA 26 in FEM 402 as receiving path A. When the control unit 404 receives a request to disable the high-precision positioning service, it configures the receiving path of LNA 26 in FEM 402 as receiving path B.

[0171] In a possible implementation, GNSS signals in each frequency band can correspond to multiple multiplexed LNAs, and each multiplexed LNA can correspond to one or more receiving paths A. Adaptively, the control unit 404 can identify the target LNA from the multiple multiplexed LNAs based on relevant communication service information and / or the usage status of each LNA in the FEM. This allows selection of LNAs with less cellular communication for GNSS communication, reducing the impact of GNSS communication on cellular communication and improving user experience. In this embodiment, relevant communication service information may include: the type of communication service, the priority of the communication service, and the frequency band of the signal used to transmit data for the communication service.

[0172] In this embodiment, the control unit 404 obtains relevant information about communication services from the AP 405.

[0173] For example, cellular communication services may include one or more of the following: voice call service, data service A, data service B, location service, payment service, etc. GNSS communication services may include one or more of the following: positioning service, high-precision positioning service, time synchronization service, weather forecast service, etc.

[0174] Each communication service has a corresponding priority. For example, taking priorities A to E as decreasing sequentially, call service can correspond to priority A, data service A to priority B, data service B to priority C, location service to priority D, and payment service to priority E. Positioning service can correspond to priority B, high-precision positioning service to priority A, time synchronization service to priority D, and weather forecast service to priority E. This application does not specifically limit the types of cellular communication services or the corresponding priorities.

[0175] In this embodiment, for the same LNA, if the priority of the GNSS communication service in request A is higher than the priority of the communication service corresponding to the signal amplified by the LNA, the LNA can be a target LNA; if the priority of the GNSS communication service in request A is lower than the priority of the service corresponding to the signal amplified by the LNA, the LNA is not a target LNA. Thus, by selecting LNAs in the FEM according to the priority of communication services, the impact of GNSS communication services on higher-priority cellular communication services or higher-priority GNSS communication services can be reduced.

[0176] In some embodiments, the control unit 404 can also obtain operator information from the AP 405. The control unit can use the operator information to identify frequency bands of cellular signals not supported by the operator, and thus identify LNAs that will not be used in the FEM. If the LNA is a reused LNA, it can be used as the target LNA.

[0177] For example, if operator A does not support the B49 frequency band, and the LNA corresponding to B49 is a reused LNA, the LNA corresponding to B49 can be used as the target LNA.

[0178] In this way, the LNA can be used even when it is turned off, reducing the impact of GNSS communication services on cellular communication services, improving the utilization rate of LNA, and improving the utilization rate of radio frequency front-end resources.

[0179] In this embodiment, the usage information of each LNA may include: status information of each LNA and usage information of each LNA. The status information indicates whether the LNA is currently in an on or off state. The usage information indicates the usage duration or usage percentage of each LNA over a period of time.

[0180] Specifically, the control unit 404 can determine whether each LNA is in use through cellular control signaling and GNSS control signaling. The control unit 404 can determine the usage duration of each LNA over a period of time through cellular control signaling and GNSS control signaling over a period of time.

[0181] For example, the control unit 404 can calculate the difference between the current time and the timestamp of the received cellular control signal to obtain the usage duration of the LNA in the enabled state in the cellular control signal; the control unit 404 counts the cellular control signal over a period of time to obtain the usage duration A of each LNA over a period of time.

[0182] The control unit 404 can calculate the difference between the current time and the timestamp of the received GNSS control signal to obtain the usage duration of the LNA in the enabled state in the GNSS control signal; the control unit 404 counts the cellular control signal over a period of time to obtain the usage duration B of each LNA over that period of time. The usage duration A and the usage duration B are added together to obtain the usage duration of each LNA.

[0183] The time period can be 10 minutes, 5 minutes, or any other value; no specific limitation is made here. For example, Figure 4 The control unit 404 obtains cellular control signaling and GNSS control signaling from the radio frequency chip 401.

[0184] In some embodiments, cellular control signaling is used to set the receiving path for cellular signals in the FEM. GNSS control signaling is used to set the receiving path for GNSS signals in the FEM.

[0185] Understandably, cellular control signaling and GNSS control signaling can be used to identify LNAs in the FEM that are active or inactive, with the inactive LNAs being the target LNAs. Thus, by selecting LNAs in the FEM based on cellular and GNSS communication usage, prioritizing inactive LNAs, interruptions to cellular or GNSS communication services can be reduced, improving user experience.

[0186] In some embodiments, each LNA in the FEM has a corresponding identifier. Cellular control signaling may include: an identifier of the LNA corresponding to the cellular signal, an identifier A for indicating that the LNA is turned on, and an identifier B for indicating that the LNA is turned off. GNSS control signaling includes: an identifier of the LNA corresponding to the GNSS signal, an identifier C for indicating that the LNA is turned on, and an identifier D for indicating that the LNA is turned off.

[0187] For example, with Figure 4 The multiplexed LNAs corresponding to the FEM L5 signal shown include LNA12, LNA13, and LNA15.

[0188] Taking cellular control signaling including: the identifier of LNA12, the corresponding identifier A of LNA12, the identifier of LNA13, and the corresponding identifier B of LNA13; and GNSS control signaling including: the identifier of LNA15 and the corresponding identifier C of LNA15, as an example, when the control unit receives a usage request indicating the activation of high-precision positioning service (e.g., transmitting data of the communication service via L5 signal), it selects LNA13 as the target LNA. This reduces the likelihood of cellular signal reception interruptions in the LNA12 receiving path and GNSS signal reception interruptions in the LNA15 receiving path, reducing stuttering and other issues caused by signal interruptions, thus improving the user experience.

[0189] It is understandable that if multiple multiplexed LNAs corresponding to a GNSS signal are all in the active state, the target LNA can be identified based on the priority of each communication service and / or the usage of each multiplexed LNA over a period of time.

[0190] In some embodiments, the control unit 404 can identify the multiplexed LNA with the minimum usage duration or the minimum usage ratio over a period of time as the target LNA. The usage ratio can be understood as the ratio of the usage duration within a time period T to the time period T.

[0191] For example, Figure 6This is a schematic diagram of the structure of an FEM (Functional Electron Mechanism) corresponding to two multiplexed LNAs, provided as an embodiment of this application. For example... Figure 6 As shown, the FEM includes: filter 40, switch 41, switch 42, switch 43, LNA 44, and LNA 45. Filter 40 is connected to port d1 of switch 43, port d2 of switch 43 is connected to port e2 of switch 41, port d3 of switch 43 is connected to port f2 of switch 42, port e1 of switch 41 is used for input cellular signal connection, and port e3 of switch 41 is connected to LNA 44; port f1 of switch 42 is used for input cellular signal connection, and port f3 of switch 42 is connected to LNA 45. For example, if the usage ratio of LNA 44 is 0.3 and the usage ratio of LNA 45 is 0, the control unit selects LNA 45 as the target LNA and configures the receiving path A of LNA 45 to transmit the L5 signal. The receiving path A of LNA 45 includes: filter 40, port d1 of switch 43, port d3 of switch 43, port f2 of switch 42, port f3 of switch 42, and LNA 45.

[0192] In some embodiments, when there are multiple multiplexed LNAs with the shortest usage time or the lowest usage ratio, the control unit can randomly select one as the target LNA. Alternatively, when there are multiple multiplexed LNAs with the shortest usage time or the lowest usage ratio, the control unit can select the multiplexed LNA with the most cellular signal receiving paths. This can reduce the impact on cellular communication. For example, taking LNA1 corresponding to signal B1, LNA2 corresponding to signal B2, and two receiving paths corresponding to signal B1 in the FEM, and four receiving paths corresponding to signal B3 in the FEM, the control unit can select LNA2 as the target LNA. The above selection of the target LNA is only an example; other methods can also be used to select the target LNA, which are not limited here.

[0193] In some embodiments, the control unit 404 can identify the multiplexed LNA whose communication service corresponding to the amplified signal of the LNA has a lower priority than the GNSS communication service, and whose usage duration or usage ratio is the lowest over a certain period of time, as the target LNA. The usage ratio can be understood as the ratio of the usage duration within time period T to the time period T.

[0194] The above embodiments illustrate the determination of the target LNA. The following will combine... Figure 7 The structure of the control unit 404 will be described. For example, Figure 7 This is a schematic diagram of the structure of a control unit 404 provided in an embodiment of this application. Figure 7 As shown, the control unit 404 includes: a priority decision module 501, an FEM selection module 502, and an FEM control module 503.

[0195] The priority decision module 501 is used to obtain the usage information and status information of each LNA based on relevant information of communication services, cellular control signaling and GNSS control signaling.

[0196] Information related to communication services, cellular control signaling, GNSS control signaling, usage information of each LNA, and status information of each LNA can be found in the above descriptions and will not be repeated here.

[0197] The FEM selection module 502 is used to select a target LNA based on the FEM hardware information, the usage information of each LNA (e.g., usage duration over a period of time), and / or the status information of each LNA. The method for confirming the target LNA can be referred to the corresponding description above, and will not be repeated here.

[0198] The FEM hardware information is used to indicate the multiplexed LNAs corresponding to each GNSS frequency band, and the receiving path information corresponding to each multiplexed LNA. For example, the FEM hardware information stores the frequency bands of the GNSS signal and the correspondence between one or more multiplexed LNAs. The FEM selection module can confirm the set of multiplexed LNAs based on this correspondence, and select a target LNA from the set of multiplexed LNAs based on the status information of each LNA, relevant information about communication services, and usage information of each LNA.

[0199] For example, with Figure 4 Taking the FEM shown as an example, the set of multiplexed LNAs corresponding to the L1 signal can include: LNA11, LNA14 and LNA15; the set of multiplexed LNAs corresponding to the L5 signal can include: LNA12, LNA13 and LNA15.

[0200] The FEM control module 503 is used to generate control signaling for the target LNA based on the control information of the FEM and the target LNA, in order to set the receiving path corresponding to the target LNA in the FEM. The control signaling of the FEM includes: the gain level of each LNA and the setting parameters on the receiving path corresponding to the LNA. The control information of the FEM includes: the address of the hardware on the receiving path corresponding to the LNA and the corresponding setting parameters. The setting parameters include: the gain coefficient (level) of the LNA when it is turned on, the parameters when the LNA is turned off, and the connection parameters of each switch, etc.

[0201] It is understandable that the logic algorithm for selecting the target LNA by the FEM selection module 502 can be stored in the control unit or application processor in the form of code. When the logic algorithm for selecting the target LNA is stored in the application processor, the application processor can transmit the logic algorithm for selecting the target LNA to the control unit, and then the control unit can confirm the target LNA through the logic algorithm.

[0202] In this embodiment, the radio frequency chip 401 and the control unit 404 can transmit messages through a dedicated hardware interface. This dedicated hardware interface may include: MIPI interface, GPIO interface, SPI interface, UART interface, SDIO interface, etc. No specific limitations are specified here.

[0203] In some embodiments, the control unit 404 may also modify the control signaling transmitted from the RF chip 401 to the FEM 402 to configure the receiving path of the target LNA in the FEM 402. In other embodiments, the control unit 404 may transmit configuration information to the RF chip 401, and the RF chip 401 outputs corresponding control signaling to the FEM 402 according to the configuration information to configure the receiving path of the target LNA in the FEM 402. The configuration information is used to indicate the receiving path of the target LNA.

[0204] The control unit 404 and FEM 402 can transmit messages via a dedicated hardware interface. The specific hardware interface can be found in the description above and will not be repeated here.

[0205] It is understood that in this embodiment, the control unit can select the optimal LNA from several available LNAs for multiplexing based on operator information, cellular and GNSS communication services and priority information, and the usage duration of RF front-end resources, thereby reducing the impact on cellular and GNSS communications. Furthermore, the control unit can achieve fine-grained control and flexible multiplexing of the RF front-end circuitry through methods such as pass-through, shielding, and replacement. For example, it can multiplex only LNAs, LNAs + filter units, or LNAs + filter units + ASMs, etc.

[0206] The above Figure 5 In the illustrated embodiment, the control unit can acquire cellular control signaling and GNSS control signaling from the radio frequency chip to identify the target LNA. The control unit can also acquire cellular control signaling from the cellular modem and GNSS control signaling from the GNSS modem.

[0207] It should be noted that the cellular control signaling in the radio frequency chip is transmitted by the cellular modem. Therefore, the control unit can also obtain cellular control signaling from the cellular modem, and thus acquire cellular control signaling. Similarly, the radio frequency chip transmits signaling from the GNSS modem; therefore, the control unit can also obtain GNSS control signaling from the GNSS modem, and thus acquire GNSS control signaling.

[0208] It is understandable that the control unit can be independent of the cellular modem and GNSS modem; or it can be located within the cellular modem and GNSS modem. This reduces the amount of information transmission between the control unit and the cellular modem or GNSS modem.

[0209] Understandably, cellular communication typically involves more cellular signaling than GNSS communication. Therefore, placing the control unit within a cellular modem results in greater reductions in signaling transmission compared to placing the control unit within a GNSS modem.

[0210] When the control unit is integrated into the cellular modem, it can obtain cellular control signaling from the radio resource control (RRC) layer or physical layer of the cellular modem. GNSS control signaling is transmitted between the cellular modem and the GNSS modem.

[0211] When the control unit is integrated into the GNSS modem, it can obtain GNSS control signaling from the radio resource control (RRC) layer or physical layer of the GNSS modem. Cellular control signaling is transmitted between the cellular modem and the GNSS modem.

[0212] Cellular modems and GNSS modems can transmit information through an inter-core communication interface. This interface can be a GPIO interface, SPI interface, UART interface, SDIO interface, etc., and is not specifically limited here.

[0213] For example, Figure 8 This is a schematic diagram of a radio frequency circuit provided in an embodiment of this application. Taking the control unit located in a cellular modem as an example, as follows... Figure 8 As shown, the components include RF chip 601, FEM 602, antenna 603, application processor 605, cellular modem 606, and GNSS modem 607.

[0214] The RF chip 601, FEM 602, antenna 603, control unit 604, and application processor 605 can be referenced as described above. Figure 5 or Figure 7 The corresponding explanations in the document will not be repeated here.

[0215] Cellular modem 606 is used to transmit cellular baseband signals and cellular control signaling to radio frequency chip 601. Cellular control signaling can be referred to the corresponding description above, and will not be repeated here. In some embodiments, cellular modem 606 is responsible for outputting cellular baseband signals, and internally performs cellular baseband signal processing, including signal encoding / decoding, symbol modulation mapping, etc.

[0216] The GNSS modem 607 is used to transmit GNSS baseband signals and GNSS control signaling to the radio frequency chip 601. The GNSS control signaling can be referred to in the corresponding description above, and will not be repeated here. In some embodiments, the GNSS modem 607 is responsible for outputting the GNSS baseband signal, and internally performs GNSS baseband signal processing, including signal encoding / decoding, symbol modulation mapping, etc.

[0217] Cellular modem 606 is also used to parse GNSS control signaling to obtain the usage status of each LNA in the FEM. Cellular modem 606 is also used to identify the target LNA based on the usage status of each LNA in the FEM. For details, please refer to the corresponding descriptions above; they will not be repeated here.

[0218] In some embodiments, the cellular modem 606 can transmit control signaling for the target LNA to the FEM 602. The cellular modem 606 can also transmit control signaling for the target LNA to the radio frequency chip 601, which configures the receiving path of the target LNA in the FEM 602 based on the control signaling for the target LNA.

[0219] In this embodiment, the radio frequency chip 601 and the cellular modem 606 can transmit messages through a dedicated hardware interface. The dedicated hardware interface can be found in the description above and will not be repeated here.

[0220] In some embodiments, the cellular modem 606 can configure the receive path of the multiplexed LNA in the FEM 602 via the radio frequency chip 601. In other embodiments, the cellular modem 606 can also transmit control signaling to the FEM 402 to configure the receive path of the multiplexed LNA in the FEM 402. No specific limitations are specified here.

[0221] Cellular modem 606 and FEM 602 can transmit messages via a dedicated hardware interface. The details of this dedicated hardware interface can be found in the description above and will not be repeated here.

[0222] The following is combined with Figure 9 and Figure 10 The control method provided in the embodiments of this application will be described.

[0223] For example, Figure 9This is a flowchart illustrating a control method for enabling GNSS services, provided as an embodiment of this application. Figure 9 As shown, the method includes:

[0224] S901, The control unit receives a usage request A, which is used to instruct the activation of GNSS communication service A.

[0225] For instructions on using request A, please refer to the above descriptions; they will not be repeated here.

[0226] S902. The control unit determines the LNA set A based on the type of communication service, the priority of each communication service, and the control information of the FEM.

[0227] The control information for the FEM can be the control signaling for the FEM. Control signaling is used to configure the receiving path in the FEM. Control signaling can include cellular control signaling and GNSS control signaling. The corresponding descriptions of cellular control signaling and GNSS control signaling are provided above and will not be repeated here.

[0228] The control unit obtains the status information of each multiplexed LNA based on the control information from the FEM. The status information can be found in the corresponding descriptions above and will not be repeated here. The control unit obtains the priority of the data corresponding to the signal transmission of each multiplexed LNA based on the type and priority of the communication service. This can also be understood as the priority corresponding to each multiplexed LNA.

[0229] LNA set A may include multiplexed LNAs with a priority lower than that of communication service A. Each multiplexed LNA in LNA set A has corresponding status information.

[0230] Understandably, when the LNA set A is empty, no processing is performed. When the LNA set A is not empty, steps S905 to S908 are executed.

[0231] S903, the control unit counts the usage time of each multiplexed LNA in the FEM.

[0232] The control unit can use control signaling to calculate the usage time of each cellular LNA. The specific calculation method can be found in the relevant explanations above, and will not be repeated here.

[0233] S904, The control unit updates the usage time of each multiplexed LNA in the database.

[0234] The control unit can store the usage time of each cellular LNA in a database, which facilitates the selection of reused LNAs in the future.

[0235] S905, The control unit determines the target LNA according to the logic algorithm for selecting the target LNA.

[0236] The control unit can determine the target LNA based on the status information of each multiplexed LNA and / or the usage duration of each multiplexed LNA.

[0237] For example, a multiplexed LNA that is in a closed state is selected from LNA set A as the target LNA. When all multiplexed LNAs in LNA set A are in an open state, the LNA with the shortest usage time is selected as the target LNA. For example, the LNA with the shortest usage time is selected from LNA set A as the target LNA. The method for confirming the target LNA can be referred to the corresponding description above, and will not be repeated here. S906, the control unit controls the switching unit A in the FEM to connect the target LNA to the port in the RF chip used to receive GNSS signals.

[0238] S907, the control unit controls the target LNA to amplify the signal.

[0239] The control unit can adjust the target LNA to be in an "on" state via control signaling. In some embodiments, the control unit can adjust the gain and / or bandwidth parameters of the target LNA via control signaling to improve the reception of GNSS signals.

[0240] S908, the control unit controls the switching unit B in the FEM to connect the target LNA to the GNSS antenna.

[0241] S906 to S908 can be understood as the control unit configuring the target LNA's receiving path as receiving path B.

[0242] This allows for the reception of GNSS signals, thereby enabling the acquisition of GNSS communication service data.

[0243] For example, Figure 10 This is a flowchart illustrating a control method for shutting down GNSS communication services, provided as an embodiment of this application. Figure 10 As shown, the method includes:

[0244] 1001. The control unit receives a usage request B, which is used to instruct the shutdown of GNSS communication service A.

[0245] For instructions on using request B, please refer to the above descriptions; they will not be repeated here.

[0246] 1002. The control unit controls the switching unit A in the FEM to connect the target LNA to the port in the radio frequency chip used to receive cellular signals.

[0247] 1003. The control unit controls the target LNA to amplify or shut down the signal according to the cellular control signaling.

[0248] Specifically, when the cellular control signaling indicates that the target LNA is in the on state, the control target LNA is also in the on state, and signal amplification is performed. When the cellular control signaling indicates that the target LNA is in the off state, the control target LNA is also in the off state.

[0249] In some embodiments, cellular control signaling is also used to indicate the gain parameters of the target LNA. Adaptively, the control unit sets the target LNA according to the gain parameters indicated by the cellular control signaling to improve the reception of cellular signals.

[0250] 1004. The control unit controls the switching unit B in the FEM to connect the target LNA to the cellular antenna.

[0251] S1002 to S1004 can be understood as the control unit configuring the target LNA's receiving path as receiving path B.

[0252] This allows for the reception of cellular signals, thereby enabling the acquisition of data from cellular communication services.

[0253] The above embodiment uses a GNSS signal and cellular signal multiplexing LNA as an example for illustration. The GNSS signal can also be replaced with other non-cellular communication signals, such as BT communication signals, WUB communication signals, etc. The circuit principle and method of multiplexing other non-cellular communication signals with cellular signals in an LNA are similar to those of multiplexing GNSS signals and cellular signals in an LNA, and will not be described in detail here.

[0254] It is understood that electronic devices typically do not transmit GNSS signals, therefore GNSS and cellular signals are not multiplexed using a PA. In some embodiments, non-cellular communication signals and cellular signals may also multiplex a PA. The circuit principle and method for multiplexing a PA for non-cellular communication signals and cellular signals are similar to the circuit principle and method for multiplexing an LNA for GNSS and cellular signals, and will not be described in detail here.

[0255] It should be noted that the module names involved in the embodiments of this application can all be defined as other names, as long as they can achieve the function of each module, and no specific restrictions are placed on the module names.

[0256] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0257] The control method of the embodiments of this application has been described above. The apparatus for executing the above method provided in the embodiments of this application is described below. Those skilled in the art will understand that the methods and apparatus can be combined with and referenced by each other, and the related apparatus provided in the embodiments of this application can execute the steps in the above method.

[0258] The control method provided in this application can be applied to electronic devices with communication functions. The electronic devices include terminal devices, and the specific device form of the terminal devices can be referred to the above-mentioned descriptions, which will not be repeated here.

[0259] This application provides an electronic device, which includes one or more processors and a memory; the memory is coupled to one or more processors and is used to store computer program code, which includes computer instructions, and one or more processors call the computer instructions to cause the electronic device to perform the above-described method.

[0260] This application provides a chip or chip system. The chip or chip system includes one or more processors, which invoke computer instructions to cause an electronic device to execute the technical solutions described above. Its implementation principle and technical effects are similar to the related embodiments described above, and will not be repeated here.

[0261] This application also provides a computer-readable storage medium. The computer-readable storage medium includes computer instructions that, when executed on an electronic device, cause the electronic device to perform the methods described above. The methods described in the above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted on the computer-readable medium. The computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium accessible by a computer.

[0262] In one possible implementation, a computer-readable medium may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage or other magnetic storage devices, or any other medium targeted to carry or to store the required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include optical discs, laser discs, optical discs, Digital Versatile Discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0263] This application provides a computer program product, which includes computer program code. When the computer program code is run, it causes the computer to perform the above-described method.

[0264] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0265] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. A radio frequency circuit, characterized in that, include: The radio frequency (RF) chip and RF front-end circuit, antenna, and control unit are included. The RF chip includes a first type of port and a second type of port. The first type of port is used to receive signals from a cellular network, and the second type of port is used to receive signals from a non-cellular network. The RF front-end circuit includes a first switching unit, N low-noise amplifiers (LNAs), and a second switching unit, where N is an integer greater than or equal to 1. The first switching unit is connected between the RF chip and the N low-noise amplifiers (LNAs), and the second switching unit is connected between the N low-noise amplifiers (LNAs) and the antenna. The second switching unit is configured to connect the antenna to the first LNA when a signal from a cellular network is received, such that the first LNA amplifies the signal from the cellular network received by the antenna; or, to connect the antenna to the first LNA when a signal from a non-cellular network is received, such that the first LNA amplifies the signal from the non-cellular network received by the antenna; the first LNA is any LNA among the N low-noise amplifier LNAs; The first switching unit is configured to connect the first LNA to the first type port and disconnect the first LNA from the second type port when the first LNA amplifies the signal from the cellular network; or, to disconnect the first LNA from the first type port and connect the first LNA to the second type port when the first LNA amplifies the signal from the non-cellular network. The control unit is configured to, upon receiving a first message, control the second switching unit to connect the antenna to the target LNA, thereby amplifying the first signal received by the antenna from the non-cellular network from the target LNA; wherein the first message is configured to instruct the activation of a first communication service in the non-cellular network, the first signal is configured to transmit data of the first communication service, the target LNA is any LNA in the second LNA, and the second LNA is any LNA in the first LNA corresponding to the frequency band of the first signal; The control unit is further configured to, upon receiving the first message, control the first switching unit to connect the target LNA to the first port in the second type of port, wherein the first port is configured to receive the first signal; The control unit is further configured to obtain status information of each of the first LNAs, the status information being used to indicate whether the LNA is in an on state or in a off state; the target LNA is any LNA among the second LNAs that is in a off state.

2. The radio frequency circuit according to claim 1, characterized in that, The priority of the first communication service is the highest priority. The control unit is also used to obtain the communication services corresponding to the signals amplified by each of the second LNAs, and the priority of each communication service; When all the second LNAs are in the enabled state, the target LNA is any one of the third LNAs, and the third LNA is the LNA whose communication service corresponding to the amplified signal in the second LNA has a lower priority than the first priority.

3. The radio frequency circuit according to claim 2, characterized in that, The control unit is further configured to obtain usage information for each of the first LNAs, wherein the usage information is used to indicate the usage duration of the LNA within a preset time period, and the usage duration is the duration during which the LNA is in the on state. When all second LNAs are in the on state, the target LNA is the LNA with the lowest usage time among the third LNAs.

4. The radio frequency circuit according to claim 1, characterized in that, The control unit is further configured to obtain control signaling from the radio frequency chip or modem, the control signaling being configured to enable or disable each of the first LNAs; The control unit is specifically used to parse the control signaling to obtain the status information of each of the first LNAs.

5. The radio frequency circuit according to claim 4, characterized in that, The control signaling is timestamped. The control unit is further configured to calculate the usage duration of each first LNA that is in the on state within a preset time period based on the timestamp and the status information of each first LNA, and update the usage information of each first LNA.

6. The radio frequency circuit according to claim 1, characterized in that, The control unit is configured to, upon receiving a second message, control the second switching unit to connect the antenna to the target LNA; wherein the second message is configured to instruct the first communication service in the non-cellular network to be turned off; The control unit is configured to, upon receiving the second message, control the first switching unit to connect the target LNA to the first type of port.

7. The radio frequency circuit according to claim 1, characterized in that, The radio frequency front-end circuit further includes: a filtering unit; the filtering unit is connected between the first LNA and the antenna; The filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the second type port are connected to obtain the signal from the non-cellular network. Alternatively, the filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA, and the first type of port are connected to obtain the signal from the cellular network.

8. The radio frequency circuit according to claim 7, characterized in that, The filtering unit includes: a first filtering unit and a second filtering unit; the first filtering unit is connected between the second switching unit and the first LNA; the second filtering unit is connected between the second switching unit and the first LNA; The first filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the second type port are connected to obtain the signal from the non-cellular network; The second filtering unit is used to filter the signal received by the antenna when the antenna, the first LNA and the first type port are connected to obtain the signal from the cellular network.

9. The radio frequency circuit according to any one of claims 1-8, characterized in that, The radio frequency front-end circuit further includes: a third filtering unit, which is connected between the second type port and the first switching unit; The third filtering unit is used to filter the signal from the non-cellular network amplified by the first LNA to obtain the filtered signal from the non-cellular network.

10. A control method, characterized in that, Applied to the radio frequency circuit as described in any one of claims 1-9, the method comprises: The control unit receives a first message, which is used to instruct the activation of a first communication service in a non-cellular network. Upon receiving the first message, the control unit controls the second switching unit to connect the antenna to the target LNA, thereby amplifying the first signal received by the antenna from the non-cellular network in the target LNA. Wherein, the first message is used to indicate the activation of a first communication service in the non-cellular network, the first signal is used to transmit data of the first communication service, the target LNA is any LNA in the second LNA, and the second LNA is any LNA corresponding to the frequency band of the first signal; Upon receiving the first message, the control unit controls the first switching unit to connect the target LNA to the first port in the second type of port of the radio frequency chip, and the first port is used to receive the first signal.

11. The method according to claim 10, characterized in that, Before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: The control unit obtains the status information of each of the first LNAs, and the status information is used to indicate whether the LNA is in an on state or in a off state; the target LNA is any LNA in the second LNA that is in a off state.

12. The method according to claim 11, characterized in that, The priority of the first communication service is the highest priority. Before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: The control unit obtains the communication services corresponding to the signals amplified by each second LNA, and the priority of each communication service; When all the second LNAs are in the enabled state, the target LNA is any one of the third LNAs, and the third LNA is the LNA whose communication service corresponding to the amplified signal in the second LNA has a lower priority than the first priority.

13. The method according to claim 12, characterized in that, Before the control unit controls the second switching unit to connect the antenna to the target LNA, the method further includes: The control unit obtains usage information for each of the first LNAs. The usage information is used to indicate the usage duration of the LNA within a preset time period, where the usage duration is the duration during which the LNA is in the on state. When all second LNAs are in the on state, the target LNA is the LNA with the lowest usage time among the third LNAs.

14. The method according to claim 11, characterized in that, The control unit obtains the status information of each of the first LNAs, including: The control unit obtains control signaling from the radio frequency chip or modem, and the control signaling is used to configure each of the first LNAs to be in an on state or an off state; The control unit parses the control signaling to obtain the status information of each of the first LNAs.

15. The method according to claim 14, characterized in that, The control signaling is timestamped. The control unit obtains usage information for each of the first LNAs, including: The control unit calculates the usage duration of each first LNA that is in the on state within a preset time period based on the timestamp and the status information of each first LNA, and updates the usage information of each first LNA.

16. The method according to any one of claims 10-15, characterized in that, The method further includes: Upon receiving a second message, the control unit controls the second switching unit to connect the antenna to the target LNA; wherein the second message is used to instruct the first communication service in the non-cellular network to be turned off. Upon receiving the second message, the control unit controls the first switching unit to connect the target LNA to the first type of port.

17. An electronic device, characterized in that, include: The radio frequency circuit according to any one of claims 1-9.

18. An electronic device, characterized in that, include: One or more processors and memory; The memory is coupled to the one or more processors, the memory being used to store computer program code, the computer program code including computer instructions, the one or more processors invoking the computer instructions to cause the electronic device to perform the method as described in any one of claims 10 to 16.

19. A chip system, characterized in that, The chip system is applied to an electronic device, the chip system including one or more processors, the one or more processors being configured to invoke computer instructions to cause the electronic device to perform the method as described in any one of claims 10 to 16.

20. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes computer instructions that, when executed on an electronic device, cause the electronic device to perform the method as described in any one of claims 10 to 16.

21. A computer program product, characterized in that, The computer program product includes computer program code that, when run on an electronic device, causes the electronic device to perform the method as described in any one of claims 10 to 16.

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