Radio frequency system, electronic equipment and radio frequency link switching method

Abstract

The invention relates to a radio frequency system, electronic equipment and a radio frequency link switching method, the radio frequency system comprises a radio frequency transceiver and a radio frequency transceiving circuit, and the radio frequency transceiving circuit can be configured with a first transceiving link, a second transceiving link and at least one receiving link. The first transceiving link is used for supporting transmission and main set receiving of a first radio frequency signal, the second transceiving link is used for supporting transmission and target receiving of a second radio frequency signal, and the first receiving link is used for supporting main set receiving of the second radio frequency signal. According to the invention, transmission of an interfered signal (such as a second radio frequency signal) and main set receiving can be decoupled, the target antenna is arranged far away from the first antenna, the target antenna is an antenna of a receiving link used for main set receiving, the self-interference coexistence problem in a dual-card scene can be improved by using the advantage of isolation between the antennas, and the self-interference coexistence performance of the dual-card scene can be improved. And the call completion rate of the second radio frequency signal is improved.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to a radio frequency system, an electronic device, and a radio frequency link switching method. Background Art

[0002] With the rapid development of 5G NR mobile services, more and more people are interested in purchasing powerful electronic devices, such as mobile phones that support dual sim dual standby (DR-DSDS) or dual sim dual active (DSDA). Mobile phones with dual sim dual standby or dual sim dual active can conveniently use two different networks and two different numbers at the same time.

[0003] In the related art, when a mobile phone supporting dual SIM dual standby or dual SIM dual pass works in a dual SIM scenario, it can support simultaneous communication of dual-band signals. During the simultaneous communication of dual-band signals, there is a self-interference problem between the dual-band signals. Summary of the invention

[0004] The embodiments of the present application provide a radio frequency system, an electronic device, and a radio frequency link switching method, which can decouple the transmission of the interfered signal and the main set receiving link in a scenario where dual-band signals communicate simultaneously and self-interference exists, so as to improve the self-interference problem between the dual-band signals.

[0005] In a first aspect, the present application provides a radio frequency system, comprising:

[0006] RF transceiver;

[0007] Radio frequency transceiver circuit, including:

[0008] A first transceiver link, connected to the RF transceiver and the first antenna, respectively, for supporting transmission and main set reception of a first RF signal;

[0009] A second transceiver link is connected to the RF transceiver and the second antenna, respectively, and is used to support transmission and target reception of a second RF signal; the frequency range of multiple harmonics of the first RF signal at least partially overlaps with the frequency range of the second RF signal;

[0010] At least one receiving link, each receiving link is connected to the RF transceiver and the antenna respectively, and one receiving link is used to support the main set reception of the second RF signal; wherein,

[0011] In the case where there is one receiving link, the target reception is diversity reception, and the receiving link is further used to support diversity reception of the first radio frequency signal;

[0012] In the case where there are multiple receiving links, the target reception includes one of diversity reception, first MIMO reception and second MIMO reception, each of the receiving links is used to support non-target reception of the second radio frequency signal, the non-target reception is different from the target reception, and the antennas connected to the receiving links are different and are antennas other than the first antenna and the second antenna.

[0013] In a second aspect, the present application provides an electronic device, comprising the above-mentioned radio frequency system and multiple antennas; wherein, the first transceiver link is connected to the first antenna, the second transceiver link is connected to the second antenna, the receiving link is connected to the third antenna, and the receiving links are respectively connected to a corresponding antenna, and the antennas connected to each of the receiving links are different and are antennas other than the first antenna and the second antenna. Among the multiple antennas, the physical space distance between the first antenna and the second antenna is the shortest.

[0014] The radio frequency system and electronic device in the embodiment of the present application, by setting a first transceiver link, a second transceiver link and at least one receiving connection in the radio frequency transceiver circuit, wherein the first transceiver link can support the transmission and main set reception of the first radio frequency signal, and the second transceiver link can support the transmission of the second radio frequency signal and the reception other than the main set reception. When there is one receiving link, its receiving link can support the diversity reception of the first radio frequency signal, and support the main set reception of the second radio frequency signal, and it can use the receiving link as the main set reception link of the second radio frequency signal. When there are multiple receiving links, one of the receiving links can support the main set reception of the second radio frequency signal. In this way, the main set reception link of the second radio frequency signal (the receiving link used to support the main set reception) can be separated from the transmission link of the second radio frequency signal, and the target antenna connected to the main set reception link can be set away from the first antenna, and its target antenna is an antenna other than the second antenna. By taking advantage of the isolation between the antennas, the self-interference coexistence problem in the dual-card scenario can be improved, the call completion rate of the second radio frequency signal can be improved, and the application experience of the dual-card scenario can be optimized to improve the communication performance of the radio frequency system and electronic equipment.

[0015] In a third aspect, the present application provides a radio frequency link switching method, the method comprising:

[0016] monitoring whether there is interference between the first radio frequency signal and the second radio frequency signal;

[0017] In the event of interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain transmission and main set reception of the first RF signal, the transmission link in the second transceiver link is controlled to maintain transmission of the second RF signal, the sub-receiver link in the second transceiver link is controlled to switch from main set reception of the second RF signal to diversity reception of the second RF signal, and the receive link is controlled to switch from diversity reception of the second RF signal to main set reception of the second RF signal; wherein the isolation between the diversity reception link of the second RF signal and the first transceiver link is greater than the isolation between the sub-receiver link in the second transceiver link and the first transceiver link.

[0018] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the sub-receive link in the second transceiver link is controlled to switch from the main set reception of the second RF signal to the diversity reception of the second RF signal, and the diversity reception link of the second RF signal is controlled to switch to the main set reception of the second RF signal, wherein the isolation between the receiving link (for example, the diversity reception link of the second RF signal after switching) and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance.

[0019] In a fourth aspect, the present application provides a radio frequency link switching method, the method comprising:

[0020] monitoring whether there is interference between the first radio frequency signal and the second radio frequency signal;

[0021] In the event of interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain transmission and main set reception of the first RF signal, the transmission link in the second transceiver link is controlled to maintain transmission of the second RF signal, the sub-receive link in the second transceiver link is controlled to switch to target reception of the second RF signal, and the target receive link is controlled to switch to main set reception of the second RF signal; wherein the isolation between the target receive link of the second RF signal and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link, the target reception includes one of diversity reception, first MIMO reception and second MIMO reception, and the target receive link is one of the three receive links.

[0022] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the transmission link in the second transceiver link is controlled to maintain the transmission of the second RF signal, the sub-receive link in the second transceiver link is controlled to switch to the target reception of the second RF signal, and the target reception link is controlled to switch to the main set reception of the second RF signal, wherein the isolation between the target reception link of the second RF signal after switching and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a front view of an electronic device in one embodiment;

[0025] Figure 2 for Figure 1 a rear view of the electronic device shown;

[0026] Figure 3 is a distribution diagram of multiple antennas in an electronic device in one embodiment;

[0027] Figure 4 is a distribution diagram of multiple antennas in an electronic device in another embodiment;

[0028] Figure 5-17 Schematic diagram of the framework of the radio frequency system in different embodiments;

[0029] Fig.18 A schematic diagram of a link switching method in an embodiment;

[0030] Fig.19 is a flow chart of a link switching method in another embodiment;

[0031] Fig. 20 is a flowchart of a link switching method in yet another embodiment;

[0032] Fig.21 A schematic diagram of a link switching method in another embodiment;

[0033] Fig. 22 FIG. 4 is a schematic diagram of a framework of an electronic device in an embodiment. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first antenna may be referred to as a second antenna, and similarly, a second antenna may be referred to as a first antenna. Both the first antenna and the second antenna are antennas, but they are not the same antenna.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0037] The radio frequency system involved in the embodiments of the present application can be applied to electronic devices with wireless communication functions, and the electronic devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (for example, a mobile phone), mobile stations (MS), etc.

[0038] refer to Figure 1 and Figure 2In one embodiment, the electronic device is a mobile phone as an example for explanation. The electronic device includes a display assembly 11 and a housing 12. Among them, the housing 12 includes a frame 121 and a back cover 123. The display assembly 11 includes a display screen 111. The display screen 111 can use an OLED (Organic Light-Emitting Diode) screen or an LCD (Liquid Crystal Display) screen. The display screen 111 can be used to display information and provide an interactive interface for the user. The shape of the display screen 111 can be a rectangle or an arc-cornered rectangle. The arc-cornered rectangle is sometimes also called a rounded rectangle, that is, the four corners of the rectangle are transitioned by arcs, and the four sides of the rectangle are roughly straight line segments.

[0039] The frame 121 can be made of metal materials such as aluminum alloy, magnesium alloy or stainless steel, or can be made of insulating materials such as plastic. The frame 121 is arranged on the periphery of the display screen assembly 11 to support and protect the display screen assembly 11. The display screen assembly 11 can be fixedly connected to the frame 121 by using a process such as glue dispensing. The frame 121 can further extend into the interior of the electronic device to form a middle plate. The integrally formed middle plate and frame 121 are sometimes also referred to as a middle frame. The display screen assembly 11 can be fixedly connected to the frame 121 or the middle plate by using a process such as glue dispensing. Reference Figure 2 The frame 121 is roughly in the shape of a rectangular frame, which includes a top frame 1213 and a bottom frame 1215 that are arranged back to back, and a first side frame 1217 and a second side frame 1219 that are connected between the top frame 1213 and the bottom frame 1215. The first side frame 1217 and the second side frame 1219 are arranged back to back, and the top frame 1213, the first side frame 1217, the bottom frame 1215 and the second side frame 1219 are connected end to end in sequence and are located at the periphery of the middle plate. The specific connection between each frame can be a right-angle connection or an arc transition connection. Furthermore, when the frame is a metal frame, a plurality of metal frame antennas can be formed in the frame 121. Specifically, the metal frame antenna can be formed by a slit set on the frame.

[0040] The back cover 123 is arranged on one side of the display area facing away from the display screen 111 and is connected to the frame 121. Furthermore, the display screen assembly 11 and the back cover 123 are respectively located on opposite sides of the middle plate. The back cover 123 can be made of metal materials such as aluminum alloy or magnesium alloy or stainless steel, or can be made of insulating materials such as plastic or glass or ceramic or leather, denim, bamboo, etc. Further, the back cover 123 is connected to the frame 121 to define a accommodating cavity, that is, an installation space, for installing electronic components such as batteries, motherboards, camera modules, etc. of electronic equipment. Among them, the motherboard can integrate electronic components such as functional devices including processors, storage units, power management modules, baseband chips, cameras, sensors, and receivers of electronic equipment.

[0041] The main board is arranged on one side of the display area facing away from the display screen 111, and the main board can be fixedly connected to the frame by means of structural members such as screws. The main board can be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). A radio frequency system for processing radio frequency signals can be integrated on the substrate, for example, including but not limited to a radio frequency transceiver and a radio frequency transceiver circuit. The radio frequency transceiver circuit can communicate with a network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to the Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), Global Positioning System (GPS), email, Short Messaging Service (SMS), etc. Optionally, a controller capable of controlling the operation of an electronic device can also be integrated on the substrate.

[0042] The electronic device in the embodiment of the present application can support simultaneous communication of dual-band signals such as dual SIM dual standby (Dual Receive Dual Sim DualStandby, DR-DSDS), dual SIM dual active (Dual Sim Dual Active, DSDA). Simultaneous communication can be understood as at least one of simultaneous transmission and reception of dual-band signals, and simultaneous support of reception of one band signal and transmission of another band signal.

[0043] like Figure 3 As shown, the electronic device 10 may include multiple antennas. For example, the electronic device 10 may include a first antenna Ant0, a second antenna Ant1, and a third antenna Ant2. The first antenna Ant0 may be arranged on the top frame 1213, the second antenna Ant1 may be arranged on the first side frame 1217 close to the top frame 1213, and the third antenna Ant2 may be arranged on the second side frame 1219. The physical space distance between the first antenna Ant0 and the second antenna Ant1 is the shortest, and the isolation between the two antennas is low. However, the first antenna Ant0 and the third antenna Ant2 have a good isolation because the space distance is relatively far.

[0044] like Figure 4 As shown, optionally, the electronic device 10 may include a first antenna Ant0, a second antenna Ant1, a third antenna Ant2, a fourth antenna Ant3 and a fifth antenna Ant4. The first antenna Ant0 may be arranged on the top frame 1213, the second antenna Ant1 may be arranged on the first side frame 1217 close to the top frame 1213, the third antenna Ant2 may be arranged on the bottom frame 1215, the fourth antenna Ant3 may be arranged on the second side frame 1219, and the fifth antenna Ant4 may be arranged on the top frame 1213 and close to the fourth antenna Ant3. The physical space distance between the first antenna Ant0 and the second antenna Ant1 is the shortest, and the isolation between the two antennas is low, but the first antenna Ant0 and the other three antennas, such as the third antenna Ant2, the fourth antenna Ant3 and the fifth antenna Ant4, are relatively far apart in space, and the isolation between the two antennas is good.

[0045] In the related art, when the electronic device 10 is in a call state, since the lower antenna (for example, the fourth antenna Ant3) is held by the hand, the antenna efficiency is poor. In a dual-card scenario (for example, n8 (SIM1) and B3 / 3 (SIM2)), it is assumed that the user is using the n8 frequency band signal to make a call. At this time, the main set of transmitting / receiving antennas for the n8 frequency band signal is the upper antenna (the first antenna Ant0), and the diversity receiving antenna is switched to (the third antenna Ant2). In the dual-card scenario, the main set of transmitting / receiving antennas for the B3 / n3 frequency band signal is (the second antenna Ant1), and the diversity receiving antenna is (the third antenna Ant2). It can be seen that in the related art, the transceiver link connected to the main set of transmitting / receiving antennas for the N8 frequency band signal may include the transmitting link of the n8 frequency band signal and the main set of receiving link of the n8 frequency band signal, and the transceiver link connected to the main set of transmitting / receiving antennas for the B3 / n3 frequency band signal may include the transmitting link of the B3 / n3 frequency band signal and the main set of receiving link of the B3 / n3 frequency band signal. Due to the poor antenna isolation between the first antenna Ant0 and the second antenna Ant1, and the frequency range of the n8 FDD band transmission signal is 880MHz-915MHz, while the frequency range of the B3 / N3 band signal reception signal is 1805MHz-1880MHz, the second harmonic (1760MHz-1830MHz) of the n8 transmission signal just falls into the B3 / n3 reception band, causing interference to the B3 / n3 reception. The inventors verified using a simulated network and found that in a dual-card scenario, when the B3 / n3 main set reception is subject to greater interference, the connection rate of the dual-card will be seriously affected, which will seriously affect the connection rate of the electronic device 10 in the dual-card scenario.

[0046] It should be noted that the dual-card scenario may also include a dual-card scenario of n28 (SIM1) and B1 / n1 (SIM2), and a dual-card scenario of B3 / n3 (SIM1) and n78 (SIM2).

[0047] When the electronic device 10 is in a dual-card scenario of n28 (SIM1) and B1 / n1 (SIM2), since the frequency range of the n28 band transmission signal is 703MHz-748MHz, and the frequency range of the B1 receiving signal is 2110MHz-2170MHz, there is a problem that the third harmonic of n28 (2109MHz-2244MHz) just falls into the B1 receiving band, causing interference to B1 reception.

[0048] When the electronic device 10 is in a dual-card scenario of B3 / n3 (SIM1) and n78 (SIM2), since the transmission signal frequency range of B3 / n3 is 1710MHz-1785MHz, and the transmission / reception signal frequency range of n78 TDD band is 3300MHz-3800MHz, there is a problem that the second harmonic (3420MHz-3570MHz) of the B3 / n3 transmission signal just falls into the n78 receiving band, causing interference to the n78 reception.

[0049] The inventors have found through verification using a simulated network that in a dual-card scenario, when the main set reception of SIM2 is subject to significant interference, the connection rate of the dual cards will be seriously affected, which will seriously affect the communication performance of the electronic device 10 .

[0050] Based on this, the present application provides a radio frequency system and an electronic device, which can redefine the radio frequency link for the dual-card scenario, and can decouple the interference receiving link of SIM2 for the main set reception from the transmitting link of SIM2, and set it away from the transmitting and receiving link of SIM1, while keeping the transmitting link of SIM2 unchanged, thereby improving the self-interference coexistence problem in the dual-card scenario, improving the call completion rate of the interfered frequency band, optimizing the application experience of the dual-card scenario, and improving the communication performance of the radio frequency system and the electronic device 10.

[0051] like Figure 5 and Figure 6 As shown, an embodiment of the present application provides a radio frequency system. The radio frequency system may include a radio frequency transceiver 110, and a radio frequency transceiver circuit 120 connected to the radio frequency transceiver 110. The radio frequency transceiver circuit 120 may be configured with a first transceiver link TRx1, a second transceiver link TRx2, and at least one receiving link Rx. The first transceiver link TRx1 is connected to the radio frequency transceiver 110 and the first antenna Ant0, respectively, to support the transmission and main set reception of the first radio frequency signal. The second transceiver link TRx2 is connected to the radio frequency transceiver 110 and the second antenna Ant1, respectively, to support the transmission and target reception of the second radio frequency signal. The antennas connected to the first transceiver link TRx1 and the second transceiver link TRx2 may be respectively as follows: Figure 3 , 4 The first antenna Ant0 and the second antenna Ant1 in the embodiment. The physical space distance between the first antenna Ant0 and the second antenna Ant1 is the smallest relative to the physical space distance between the other two antennas. However, the antenna efficiency of the first antenna Ant0 and the second antenna Ant1 is the highest.

[0052] In the embodiment of the present application, the first RF signal can be understood as the RF signal supported by SIM1, and the second RF signal can be understood as the RF signal supported by SIM2. The first transceiver link TRx1 and the second transceiver link TRx2 are in working state at the same time to support the simultaneous transmission of the first RF signal and the second RF signal, and to simultaneously support the main set reception of the first RF signal and the target reception of the second RF signal.

[0053] If there is self-interference between the first RF signal and the second RF signal supported by the RF system (for example, the multiple harmonic frequencies of the transmission signal of the first RF signal just fall within the frequency range of the reception signal of the second RF signal, and the transmission signal of the first RF signal will interfere with the reception of the second RF signal), the second transceiver link TRx2 in the RF transceiver circuit 120 can be configured to support the transmission and target reception of the second RF signal. The target reception is reception other than the main set reception, for example, the target reception may include diversity reception, MIMO reception, etc.

[0054] In the embodiment of the present application, the combination of the first radio frequency signal and the second radio frequency signal with self-interference may include the following manners:

[0055] The first radio frequency signal is an n8 frequency band signal, and the second radio frequency signal is a B3 or n3 frequency band signal.

[0056] The first radio frequency signal is a n28 frequency band signal, and the second radio frequency signal is a B1 or n1 frequency band signal.

[0057] The first radio frequency signal is a B3 or n3 frequency band signal, and the second radio frequency signal is an n78 frequency band signal.

[0058] It should be noted that the combination of the first RF signal and the second RF signal with self-interference is not limited to the above examples, and may also be other combinations, which are not listed here one by one.

[0059] The receiving link Rx included in the RF transceiver circuit 120 can be connected to the RF transceiver 110 and the antenna respectively. In the embodiment of the present application, the receiving link Rx can be one or more.

[0060] Please continue to refer to Figure 5 , when the receiving link Rx is one, it can be applied to Figure 3In the electronic device 10 shown, its receiving link Rx can be connected to the third antenna Ant2. The second transceiver link TRx2 in the RF transceiver circuit 120 can support the transmission and diversity reception of the second RF signal, and the receiving link Rx can be used to support the main set reception of the second RF signal, and support the diversity reception of the first RF signal. Among them, the second transceiver link TRx2 may include a transmission link of the second RF signal and a diversity reception link Rx of the second RF signal to support the transmission and diversity reception of the second RF signal respectively. The receiving link supporting the main set reception of the second RF signal can also be referred to as the main set reception link of the second RF signal, and the third antenna Ant2 connected to the main set reception link can be used to support the main set reception of the second RF signal and support the diversity reception of the first RF signal.

[0061] In this embodiment, the radio frequency system includes a radio frequency transceiver and a radio frequency transceiver circuit, wherein the radio frequency transceiver circuit is configured with a first transceiver link connected to the first antenna, a second transceiver link connected to the second antenna, and a receiving link connected to the third antenna, wherein the first transceiver link can support the transmission and main set reception of the first radio frequency signal, the second transceiver link can support the transmission and diversity reception of the second radio frequency signal, the receiving link can support the diversity reception of the first radio frequency signal, and support the main set reception of the second radio frequency signal, and it can use the receiving link as the main set reception link of the second radio frequency signal. The present application separates the main set reception link of the second radio frequency signal from the transmission link of the second radio frequency signal. It can be understood that the diversity reception link of the second radio frequency signal in the related art can be used as the main set reception link of the second radio frequency signal in the present application, and the main set reception link of the second radio frequency signal in the related art can be used as the diversity reception link of the second radio frequency signal in the present application. At the same time, the transmission link of the second RF signal can be kept unchanged, and its main set receiving link is connected to the third antenna. The physical space distance between the third antenna and the first antenna is greater than the physical space distance between the second antenna and the first antenna. The advantage of the isolation between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance of the RF system.

[0062] Optionally, when there are multiple receiving links, it can be applied to Figure 4In the electronic device 10 shown. Among them, the antennas connected to each receiving link are different, and the antennas connected to each receiving link are antennas other than the first antenna Ant0 and the second antenna Ant1, and the physical distance between the first antenna Ant0 and the second antenna Ant1 is the shortest. In the case where there are multiple receiving links configured in the RF transceiver circuit, the target reception includes one of diversity reception, first MIMO reception and second MIMO reception. That is to say, the transmitting link in the second transceiver link TRx2 can be used to support the transmission processing of the second RF signal, and the sub-receiving link in the second transceiver link TRx2 can be used to support diversity reception, first MIMO reception or second MIMO reception. If the sub-receiving link in the second transceiver link TRx2 can be used to support diversity reception, the sub-receiving link in the second transceiver link TRx2 is a diversity reception link for the second RF signal; if the sub-receiving link in the second transceiver link TRx2 can be used to support the first MIMO reception, the sub-receiving link in the second transceiver link TRx2 is the first MIMO reception link for the second RF signal; if the sub-receiving link in the second transceiver link TRx2 can be used to support the second MIMO reception, the sub-receiving link in the second transceiver link TRx2 is the second MIMO reception link for the second RF signal.

[0063] Each receiving link is used to support non-target reception of the second radio frequency signal, and the non-target reception is different from the target reception. Among them, each receiving link can support non-target reception of the second radio frequency signal, and its receiving link can be called a non-target reception link. Exemplarily, if the target reception is diversity reception, the non-target reception is main set reception, first MIMO reception or second MIMO reception. In other words, each receiving link is used to support main set reception, first MIMO reception or second MIMO reception of the second radio frequency signal. Optionally, if the target reception is first MIMO reception, the non-target reception is main set reception, diversity reception or second MIMO reception.

[0064] In this embodiment, the radio frequency system includes a radio frequency transceiver and a radio frequency transceiver circuit, wherein the radio frequency transceiver circuit is configured with a first transceiver link connected to a first antenna, a second transceiver link connected to a second antenna, and a plurality of receiving links respectively connected to the plurality of antennas, wherein the first transceiver link can support the transmission and main set reception of the first radio frequency signal, the second transceiver link can support the transmission and target reception of the second radio frequency signal, and each receiving link can support non-target reception of the second radio frequency signal, wherein the non-target reception is different from the target reception. The present application separates the main set reception link of the second radio frequency signal from the transmission link of the second radio frequency signal. It can be understood that the diversity reception link, the first MIMO reception link or the second MIMO reception link of the second radio frequency signal in the related art can be used as the main set reception link of the second radio frequency signal in the present application, and the main set reception link of the second radio frequency signal in the related art can be used as the diversity reception link, the first MIMO reception link or the second MIMO reception link of the second radio frequency signal in the present application. At the same time, the transmission link of the second RF signal can be kept unchanged, and its main set receiving link is connected to the third antenna, the fourth antenna or the fifth antenna. The physical space distance between the third antenna, the fourth antenna or the fifth antenna and the first antenna is greater than the physical space distance between the second antenna and the first antenna. The advantage of the isolation between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance of the RF system.

[0065] like Figure 6 As shown, in one embodiment, the radio frequency transceiver circuit includes three receiving links (for example, Rx1, Rx2, and Rx3), and the three receiving links can correspond to the following respectively. Figure 4 The third antenna Ant2, the fourth antenna Ant3, and the fifth antenna Ant4 are connected. In an embodiment of the present application, one of the three receiving links is used to support the main set reception of the second RF signal, and the remaining two of the three receiving links are respectively used to support non-target reception of the second RF signal. Among them, non-target reception includes one of diversity reception, first MIMO reception, and second MIMO reception, and each receiving link supports different non-target reception. As mentioned above, one of the three receiving links is the main set reception link of the second RF signal; the remaining two receiving links of the three receiving links can be the first MIMO reception link of the second RF signal, the second MIMO reception link of the second RF signal, or the diversity reception link of the second RF signal. Among them, the remaining two receiving links of the three receiving links do not support the target reception of the second RF signal. It can be understood that the remaining two receiving links of the three receiving links can be used to support reception other than the main set reception and target reception of the second RF signal.

[0066] Further, any one of the three receiving links can also be used to support diversity reception of the first RF signal. Exemplarily, the diversity receiving link of the second RF signal can also support diversity reception of the first RF signal. Optionally, the main set receiving link of the second RF signal can also support diversity reception of the first RF signal.

[0067] In this embodiment, the RF transceiver circuit in the RF system can be configured with a first transceiver link, a second transceiver chain and three receiving links, wherein the antennas connected to each link are different from each other. By setting three receiving links and two receiving links, it is possible to support the transmission and two-way reception of the first RF signal, as well as support the transmission and four-way reception of the second RF signal to support the 4*4 MIMO function of the second RF signal. It is also possible to take advantage of the isolation between the antennas to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, and optimize the application experience of the dual-card scenario to improve the communication performance of the RF system.

[0068] For ease of explanation, three embodiments are provided below to illustrate the configuration of the RF transceiver circuit 120 with a first transceiver link TRx1, a second transceiver link TRx2, a first receiving link Rx1, a second receiving link Rx2, and a third receiving link Rx3 respectively connected to the RF transceiver 110. The first transceiver link TRx1 is connected to the first antenna Ant0, and can be used to support the transmission of the first RF signal and the main set reception; the second transceiver link TRx2 is connected to the second antenna Ant1; the first receiving link Rx1 is connected to the third antenna Ant2; the second receiving link Rx2 is connected to the fourth antenna Ant3; and the third receiving link Rx3 is connected to the fifth antenna Ant4.

[0069] like Figure 7 As shown, in one embodiment, the second transceiver link TRx2 is used to support the transmission and diversity reception of the second RF signal. The second antenna Ant1 can support the transmission and diversity reception of the second RF signal. The first receiving link Rx1 is used to support the diversity reception of the first RF signal and the main set reception of the second RF signal. The third antenna Ant2 can support the diversity reception of the first RF signal and the main set reception of the second RF signal. The second receiving link Rx2 is used to support the first MIMO reception of the second RF signal; wherein the fourth antenna Ant3 can support the first MIMO reception of the second RF signal. The third receiving link Rx3 is used to support the second MIMO reception of the second RF signal. The fifth antenna Ant4 can support the second MIMO reception of the second RF signal.

[0070] The radio frequency system provided in this embodiment can separate the main set receiving link of the second radio frequency signal from the transmitting link of the second radio frequency signal. For example, the diversity receiving link of the second radio frequency signal in the related art can be used as the main set receiving link of the second radio frequency signal in this application, and the main set receiving link of the second radio frequency signal in the related art can be used as the diversity receiving link of the second radio frequency signal in this application. At the same time, the transmitting link of the second radio frequency signal can be kept unchanged, and its first receiving link (the main set receiving link of the second radio frequency signal in this application) is connected to the third antenna, and the physical space spacing between the third antenna and the first antenna is greater than the physical space spacing between the second antenna and the first antenna. The advantage of the isolation between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second radio frequency signal, and optimize the application experience of the dual-card scenario to improve the communication performance of the radio frequency system. In addition, the radio frequency system in this embodiment can also support the transmission and two-way reception of the first radio frequency signal, and support the transmission and four-way reception of the second radio frequency signal to support the 4*4MIMO function of the second radio frequency signal, which can further improve the receiving performance of the radio frequency system for the second radio frequency signal.

[0071] like Figure 8 As shown, in one embodiment, the first receiving chain Rx1 and the third receiving chain Rx3 are as follows Figure 7 The embodiment shown in the figure is the same as the previous embodiment, and will not be repeated here. The difference between this embodiment and the previous embodiment is that the second transceiver link TRx2 in this embodiment can be used to support the transmission of the second RF signal and the first MIMO reception. Among them, the second antenna Ant1 can support the transmission of the second RF signal and the first MIMO reception. The second receiving link Rx2 can be used to support the main set reception of the second RF signal; among them, the fourth antenna Ant3 can support the main set reception of the second RF signal.

[0072] The radio frequency system provided in this embodiment can use the first MIMO receiving link of the second radio frequency signal in the related art as the main set receiving link of the second radio frequency signal in this application, and use the main set receiving link of the second radio frequency signal in the related art as the first MIMO receiving link of the second radio frequency signal in this application. At the same time, the transmission link of the second radio frequency signal can be kept unchanged, and its second receiving link (the main set receiving link of the second radio frequency signal in this application) is connected to the fourth antenna, and the physical space spacing between the fourth antenna and the first antenna is greater than the physical space spacing between the second antenna and the first antenna. The advantage of the isolation between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario. In addition, the radio frequency system in this embodiment can also support the transmission and two-way reception of the first radio frequency signal, and support the transmission and four-way reception of the second radio frequency signal, so as to support the 4*4MIMO function of the second radio frequency signal, which can further improve the receiving performance of the radio frequency system for the second radio frequency signal.

[0073] like Fig. 9 As shown, in one embodiment, the first receiving chain Rx1 and the second receiving chain Rx2 are connected to Figure 7 The embodiment shown in the figure is the same as the previous embodiment, and will not be repeated here. The difference between this embodiment and the previous embodiment is that the second transceiver link TRx2 in this embodiment can be used to support the transmission of the second RF signal and the second MIMO reception. Among them, the second antenna Ant1 can support the transmission of the second RF signal and the second MIMO reception. The third receiving link Rx3 can be used to support the main set reception of the second RF signal; among them, the fifth antenna Ant4 can support the main set reception of the second RF signal.

[0074] The radio frequency system provided in this embodiment can use the second MIMO receiving link of the second radio frequency signal in the related art as the main set receiving link of the second radio frequency signal in this application, and use the main set receiving link of the second radio frequency signal in the related art as the second MIMO receiving link of the second radio frequency signal in this application. At the same time, the transmission link of the second radio frequency signal can be kept unchanged, and its third receiving link (the main set receiving link of the second radio frequency signal in this application) is connected to the fifth antenna, and the physical space spacing between the fifth antenna and the first antenna is greater than the physical space spacing between the second antenna and the first antenna. The advantage of the isolation between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario. In addition, the radio frequency system in this embodiment can also support the transmission and two-way reception of the first radio frequency signal, and support the transmission and four-way reception of the second radio frequency signal, so as to support the 4*4MIMO function of the second radio frequency signal, which can further improve the receiving performance of the radio frequency system for the second radio frequency signal.

[0075] Based on any of the foregoing embodiments, in one of the embodiments, the second receiving link Rx2 is further used to support the first MIMO reception of the first radio frequency signal; and the third receiving link Rx3 is further used to support the second MIMO reception of the first radio frequency signal. It can be understood that the second receiving link Rx2 can be used to support the first MIMO reception of the first radio frequency signal and the second radio frequency signal, and the third receiving link Rx3 can be used to support the second MIMO reception of the first radio frequency signal and the second radio frequency signal.

[0076] The RF system provided in this embodiment can not only take advantage of the isolation between antennas to improve the self-interference coexistence problem in the dual-card scenario, but also support the transmission and four-way reception of the first RF signal, and support the transmission and four-way reception of the second RF signal, so as to respectively support 4*4 MIMO functions for the first RF signal and the second RF signal, thereby further improving the reception performance of the RF system for the first RF signal and the second RF signal.

[0077] like Fig.10As shown, in one embodiment, based on any of the foregoing embodiments, the RF transceiver circuit 120 may include a first transceiver module 121, a second transceiver module 122 and at least one receiving module 123. Among them, the first transceiver module 121 is configured with a first transceiver link for supporting the transmission of a first RF signal and the reception of a main set. Among them, the first transceiver module 121 may include RF devices such as a power amplifier, a filter unit, and a selection switch, and its RF devices can support the processing of the first RF signal. The second transceiver module 122 is configured with a second transceiver link for supporting the transmission of a second RF signal and the reception of a target. Among them, the second transceiver module 122 may include RF devices such as a power amplifier, a filter unit, and a selection switch, and its RF devices can support the processing of a second RF signal. The RF devices included in the first transceiver module 121 and the second transceiver module 122 can be integrated in the same RF chip or can be independent modules.

[0078] For the sake of convenience, it is assumed that the first RF signal is an n8 frequency band signal and the second RF signal is a B3 or n3 frequency band signal.

[0079] The first transceiver module 121 may include a first power amplifier and an n8-band power divider, wherein the input end of the first power amplifier is connected to the output end of the RF transceiver 110, the input end of the first power amplifier is connected to a first end of the n8-band power divider, the other first end of the n8-band power divider is connected to the input end of the RF transceiver 110, and the second end of the n8-band power divider is connected to the first antenna Ant0. The first power amplifier and the n8-band power divider are provided on the transmission link in the first transceiver link TRx1. Specifically, the n8-band signal is transmitted to the first power amplifier via the output end of the RF transceiver 110 to support power amplification of the n8-band signal, and the amplified n8-band signal is transmitted to a first end of the n8-band power divider, and after filtering by the n8-band power divider, it is transmitted to the first antenna Ant0 via the second end of the n8-band power divider to support the transmission of the n8-band signal. The n8-band power divider is provided on the receiving link Rx in the first transceiver link TRx1. Specifically, the first antenna Ant0 receives the RF signal from the free space and transmits it to the n8 band power divider. After filtering by the n8 band power divider, the n8 band signal is output to the RF transceiver 110 to achieve the target reception of the n8 band signal.

[0080] The second transceiver module 122 may include a second power amplifier and a B3 or n3 band power divider, wherein the input end of the second power amplifier is connected to the output end of the RF transceiver 110, the input end of the second power amplifier is connected to a first end of the B3 band power divider, the other first end of the B3 or n3 band power divider is connected to the input end of the RF transceiver 110, and the second end of the B3 or n3 band power divider is connected to the second antenna Ant1. The second power amplifier and the B3 or n3 band power divider are provided on the transmitting link in the second transceiver link TRx2. The receiving sub-link in the second transceiver link TRx2 is provided with a B3 or n3 band power divider. The transmission processing and target reception of the B3 or n3 band signal can correspond to the transmitting link and receiving sub-link of the reference n8 band signal, respectively, and will not be repeated here.

[0081] The receiving module 123 is configured with a receiving link for supporting the reception of the main set of the second RF signal. In the embodiment of the present application, the receiving module 123 may be one or more. Among them, a receiving module 123 may be configured with a receiving link for supporting the reception of the main set of the second RF signal.

[0082] Optionally, the RF transceiver circuit 120 may include a receiving module 123, and the receiving module 123 may include RF devices such as a filtering unit and a combining unit, and the combining unit and the filtering unit may constitute the receiving link Rx. Among them, the filtering unit may include a first filter for outputting a first RF signal, and a second filter for outputting a second RF signal. In addition to supporting the main set reception of the second RF signal, the receiving link Rx can also support the diversity reception of the first RF signal. The RF devices included in the receiving module 123 can be integrated in the same RF chip or can be an independent module.

[0083] Optionally, the RF transceiver circuit 120 may include three receiving modules 123 (not shown in the figure), wherein one receiving module may include RF devices such as a filtering unit and a combining unit, and a combining unit and a filtering unit are provided on its receiving link. The remaining two receiving modules may include a filter that supports filtering processing of the second RF signal, and a filter is provided on its receiving link.

[0084] It should be noted that, in the embodiment of the present application, the radio frequency devices included in the first transceiver module 121 , the second transceiver module 122 and each receiving module 123 are not limited to the above examples.

[0085] The radio frequency system in the embodiment of the present application, its radio frequency transceiver circuit includes a first transceiver module 121, a second transceiver module 122 and at least one receiving module 123, and each module is provided with a corresponding radio frequency device to realize the reconfiguration of the radio frequency link of the dual-card scenario, and the main set receiving link of the second radio frequency signal can be decoupled from the transmitting link of the second radio frequency signal, and the main set receiving link of the second radio frequency signal can be set away from the transceiver link of the first radio frequency signal, while the transmitting link of the second radio frequency signal can be kept unchanged, thereby improving the self-interference coexistence problem in the dual-card scenario, improving the call completion rate of the second radio frequency signal, optimizing the application experience of the dual-card scenario, and improving the communication performance of the radio frequency system.

[0086] In one embodiment, the first transceiver module 121 is also used to support the transmission and main set reception of multiple third RF signals, and the second transceiver module 122 is also used to support the transmission and main set reception of multiple fourth RF signals. It should be noted that the frequency bands of the first RF signal and each third RF signal are different, but the frequency range of the first RF signal and each third RF signal is within the first preset range. Exemplarily, if the first RF signal is an n8 band signal, each third RF signal may also be a low frequency band similar to the frequency range of the n8 band signal. For example, each third RF signal may be a low frequency band signal such as n1, n3, n5 or n28.

[0087] Correspondingly, the frequency bands of the second RF signal and each fourth RF signal are different, but the frequency ranges of the second RF signal and each fourth RF signal are within the second preset range. Exemplarily, if the second RF signal is a B3 frequency band signal, each fourth RF signal may also be a low frequency band close to the frequency range of the B3 frequency band signal. For example, each fourth RF signal may be a medium frequency band signal such as B1, B2, B4, B5 or B7.

[0088] like Fig.11As shown, specifically, the first transceiver module 121 includes: a first power amplifier 1211, a first selection switch 1212, a second selection switch 1213 and a plurality of first filtering units 1214. The input end of the first power amplifier 1211 is connected to the output end of the RF transceiver 110, the output end of the first power amplifier 1211 is connected to the first end of the first selection switch 1212, the plurality of second ends of the first selection switch 1212 are respectively connected to a first end of the plurality of first filtering units 1214, the other first ends of the plurality of first filtering units 1214 are respectively connected to the receiving end of the RF transceiver 110, the plurality of second ends of the plurality of first filtering units 1214 are respectively connected to a plurality of first ends of the second selection switch 1213, and the second end of the second selection switch 1213 is connected to the first antenna Ant0; wherein, the RF signal output by a first filtering unit 1214 is the first RF signal, and the RF signals output by the other first filtering units 1214 are the third RF signals, and the frequency bands of the third RF line signals are different. The first power amplifier 1211 , the first selection switch 1212 , the first filter unit 1214 for outputting the first radio frequency signal, and the second selection switch 1213 constitute a first transceiver link TRx1 .

[0089] The second transceiver module 122 includes: a second power amplifier 1221, a third selection switch 1222, a fourth selection switch 1223 and a plurality of second filter units 1224, wherein the input end of the second power amplifier 1221 is connected to the output end of the RF transceiver 110, the output end of the first power amplifier 1211 is connected to the first end of the first selection switch 1212, the plurality of second ends of the third selection switch 1222 are respectively connected to a first end of the plurality of second filter units 1224, the other first ends of the plurality of second filter units 1224 are respectively connected to the receiving end of the RF transceiver 110, the plurality of second ends of the plurality of second filter units 1224 are respectively connected to a plurality of first ends of the fourth selection switch 1223, and the second end of the fourth selection switch 1223 is connected to the second antenna Ant1. The RF signal output by a second filter unit 1224 is a second RF signal, and the RF signals output by other second filter units 1224 are fourth RF signals, and the frequency bands of the fourth RF line signals are different. The second power amplifier 1221 , the third selection switch 1222 , the second filter unit 1224 for outputting the second radio frequency signal, and the fourth selection switch 1223 constitute a second transceiver link TRx2 .

[0090] Further, the RF transceiver circuit 120 also includes a first receiving module 123a, a second receiving module 123b and a third receiving module 123c for example. The first receiving module 123a includes a first filter 1231, a second filter 1232 and a combiner 1233, the second receiving module 123b includes a third filter 1234, and the third receiving module 123c includes a fourth filter 1235. The first receiving module 123a is configured with a first receiving link, the second receiving module 123b is configured with a second receiving link, and the third receiving module 123c is configured with a third receiving link.

[0091] In one embodiment, if Figure 12-14 As shown, the second transceiver link configured in the second transceiver module 122 is used to support the transmission of the second radio frequency signal and the first MIMO reception, and the second receiving link configured in the second receiving module 123b is used to support the main set reception processing of the second radio frequency signal. Fig.12 As shown, the first RF signal is an n8 frequency band signal, and the second RF signal is a B3 or n3 frequency band signal.

[0092] The transmission and reception principle of the first radio frequency signal n8 (SIM1) is as follows:

[0093] Transmission link of n8 frequency band signal: after being modulated and up-converted internally by the RF transceiver 110, it is emitted from the output terminal Tx0, amplified by the first power amplifier 1211, switched to the first filter unit 1214 (for example, the transmission filter of the n8 frequency band signal) for filtering through the first selection switch 1212, and then switched to the first antenna Ant0 through the second selection switch 1213, and radiated to the free space through the first antenna Ant0.

[0094] The main set receiving link of the n8 band signal: the spatial n8 band signal is received from the first antenna Ant0, switched to the first filtering unit 1214 (for example, the receiving filter of the n8 band signal) through the second selection switch 1213, enters the input terminal Rx0 of the RF transceiver 110, and then goes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0095] Diversity reception link Rx of n8 band signal: The spatial n8 band signal is received from the third antenna Ant2, passes through the combining unit to the first filter 1231, for example, the n8 receiving filter, enters the input terminal Rx7 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0096] The transmission and reception principle of the second radio frequency signal B3 / n3 (SIM2) is as follows:

[0097] Transmission link of B3 / n3 frequency band signal: after being modulated and up-converted inside the RF transceiver 110, it is emitted from the output terminal Tx1, amplified by the second power amplifier 1221, switched to the B3 / n3 transmission filter in the second filtering unit 1224 through the third selection switch 1222, and then switched to the second antenna Ant1 through the fourth selection switch 1223, and radiated to the free space through the second antenna Ant1.

[0098] The main set receiving link of the B3 / n3 frequency band signal: the free space B3 / n3 frequency band signal is received from the fourth antenna Ant3, passes through the third filter 1234, such as the B3 / n3 receiving filter, enters the input terminal Rx8 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0099] The diversity reception link Rx reception of the B3 / n3 frequency band signal: the B3 / n3 frequency band signal in the free space is received from the third antenna Ant2, passes through the combining unit to the second filter 1232, such as the B3 / n3 receiving filter, enters the input terminal Rx6 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0100] The first MIMO receiving link of the B3 / n3 frequency band signal: the spatial B3 / n3 frequency band signal is received from the second antenna Ant1, switched to the second filtering unit 1224 (for example, the receiving filter of the B3 / n3 frequency band signal) through the fourth selection switch 1223, enters the input terminal Rx3 of the RF transceiver 110, and then undergoes down-conversion demodulation inside the RF transceiver 110 to complete the signal processing.

[0101] The second MIMO receiving link of the B3 / n3 frequency band signal: the B3 / n3 frequency band signal is received from the fifth antenna Ant4 in the free space, passes through the fourth filter 1235, such as the B3 / n3 receiving filter, enters the input terminal Rx9 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0102] It should be noted that the first RF signal is an n28 frequency band signal, the second RF signal is a combination of B1 or B1 frequency band signals, and the first RF signal is a combination of B3 or n3 frequency band signals and the second RF signal is an n78 frequency band signal. Please refer to the description of the principles of transmission and reception of the first RF signal and the second RF signal in this embodiment, and will not be repeated here.

[0103] The radio frequency system of this embodiment configures corresponding links in each module of the radio frequency transceiver circuit 120. When there is a self-interference scenario in the dual-card scenario (for example, the second harmonic of the n8 frequency band signal interferes with the B3 / n3 frequency band signal receiving link Rx), the second receiving link Rx2 configured in the second receiving module 123b is used as the main set receiving link of the interfered signal, and the sub-receiving link configured in the first transceiver module 121 is used as the first MIMO receiving link Rx of the interfered signal. At the same time, the transmitting link of the interfered signal is kept unchanged, and the isolation advantage between the antennas is used to improve the self-interference coexistence problem in the dual-card scenario and improve the call completion rate of the interfered signal.

[0104] In one embodiment, if Figure 15-17 As shown, the second transceiver link configured in the second transceiver module 122 is used to support the transmission and diversity reception of the second radio frequency signal, and the first receiving link configured in the first receiving module 123a is used to support the diversity reception of the first radio frequency signal and support the main set reception processing of the second radio frequency signal. Fig.16 As shown, the first RF signal is an n28 frequency band signal, and the second RF signal is a B1 or n1 frequency band signal.

[0105] The transmission and reception principle of the first radio frequency signal n28 (SIM1) is as follows:

[0106] Transmission link of n28 frequency band signal: after being modulated and up-converted internally by the RF transceiver 110, it is emitted from the output terminal Tx0, amplified by the first power amplifier 1211, switched to the first filter unit 1214 (for example, the transmission filter of the n28 frequency band signal) for filtering through the first selection switch 1212, and then switched to the first antenna Ant0 through the second selection switch 1213, and radiated to the free space through the first antenna Ant0.

[0107] The main set receiving link of the n28 frequency band signal: the spatial N28 frequency band signal is received from the first antenna Ant0 antenna, switched to the first filtering unit 1214 (for example, the receiving filter of the n28 frequency band signal) through the second selection switch 1213, enters the input terminal Rx0 of the RF transceiver 110, and then undergoes down-conversion demodulation inside the RF transceiver 110 to complete the signal processing.

[0108] Diversity reception link Rx for Nn28 band signals: The spatial n28 band signal is received from the third antenna Ant2, passes through the combining unit to the first filter 1231, for example, the n28 receiving filter, enters the input terminal Rx7 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0109] The transmission and reception principle of the second radio frequency signal B3 / N3 (SIM2) is as follows:

[0110] Transmission link of B1 / n1 frequency band signal: after being modulated and up-converted inside the RF transceiver 110, it is emitted from the output terminal Tx1, amplified by the second power amplifier 1221, switched to the B1 / n1 transmission filter in the second filtering unit 1224 through the third selection switch 1222, and then switched to the second antenna Ant1 through the fourth selection switch 1223, and radiated to the free space through the second antenna Ant1.

[0111] The main set receiving link of the B1 / n1 frequency band signal: the spatial B1 / n1 frequency band signal is received from the third antenna Ant2, passes through the combining unit to the second filter 1232, for example, the B1 / n1 receiving filter, enters the input terminal Rx6 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0112] The diversity reception link Rx reception of the B1 / n1 band signal: receives the B3 / n3 band signal in the free space from the second antenna Ant1, switches to the second filtering unit 1224 (for example, the receiving filter of the B1 / n1 band signal) through the fourth selection switch 1223, enters the input terminal Rx3 of the RF transceiver 110, and then undergoes down-conversion demodulation inside the RF transceiver 110 to complete the signal processing.

[0113] The first MIMO receiving link of the B1 / n1 frequency band signal: the B1 / n1 frequency band signal is received from the free space from the fourth antenna Ant3, passes through the third filter 1234, such as the B1 / n1 receiving filter, enters the input terminal Rx8 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0114] The second MIMO receiving link of the B1 / n1 frequency band signal: the B1 / n1 frequency band signal is received from the fifth antenna Ant4 in the free space, passes through the fourth filter 1235, such as the B1 / n1 receiving filter, enters the input terminal Rx9 of the RF transceiver 110, and then passes through the internal down-conversion demodulation of the RF transceiver 110 to complete the signal processing.

[0115] It should be noted that the combination of the first RF signal being the n8 frequency band signal and the second RF signal being the B3 or n3 frequency band signal, and the combination of the first RF signal being the B3 or n3 frequency band signal and the second RF signal being the n78 frequency band signal can refer to the principle description of the transmission and reception of the first RF signal and the second RF signal in this embodiment, and will not be repeated here.

[0116] The radio frequency system of this embodiment configures corresponding links in each module of the radio frequency transceiver circuit. When there is a self-interference scenario in the dual-card scenario (for example, the third harmonic of the n28 frequency band signal interferes with the B1 / n1 frequency band signal receiving link), the first receiving link configured in the first receiving module serves as the main set receiving link of the interfered signal, and the sub-receiving link configured in the second transceiver module serves as the diversity receiving link of the interfered signal. At the same time, the transmitting link of the interfered signal is kept unchanged, and the isolation advantage between the antennas is utilized to improve the self-interference coexistence problem in the dual-card scenario and improve the call completion rate of the interfered signal.

[0117] In one embodiment, the RF system further includes: a detection control circuit connected to the RF transceiver and the RF transceiver circuit respectively. The detection control circuit is used to control the second transceiver link to support the transmission and main set reception of the second RF signal when it is detected that the RF signal currently transmitted and received by the first transceiver module and the second transceiver module does not meet the preset conditions, and control the receiving link currently used for target reception to support the diversity reception of the second RF signal. The preset condition is that the RF signal currently transmitted and received by the first transceiver module is the first RF signal, and the RF signal currently transmitted and received by the second transceiver module is the second RF signal.

[0118] The detection control circuit may include a baseband processor and a modem connected to the RF transceiver. The modem may be used to detect the specific frequency band of the RF signal currently received and transmitted by the first transceiver module and the second transceiver module, and the baseband processor may determine whether the RF signal currently received and transmitted by the first transceiver module and the second transceiver module meets the preset conditions based on the specific frequency band detected by the modem, and if the preset conditions are not met, control the second transceiver link to support the transmission and main set reception of the second RF signal, and control the receiving link currently used for target reception to support the diversity reception of the second RF signal.

[0119] Optionally, the baseband processor in the detection control circuit may also be replaced by a radio frequency transceiver. It should be noted that in the embodiment of the present application, the specific components of the detection control circuit are not further limited.

[0120] It can be understood that the frequency range of the multiple harmonics of the RF signal currently supported by the first transceiver module does not overlap with the frequency range of the RF signal currently supported by the second transceiver module, that is, there is no mutual interference between the dual-frequency signals. Exemplarily, if the RF signal currently supported by the first transceiver module is the third RF signal, and the RF signal currently supported by the second transceiver module is the second RF signal, if the frequency range of the multiple harmonics of the third RF signal does not overlap with the frequency range of the second RF signal, it can be understood that there is no mutual interference between the second RF signal and the third RF signal. In this way, the detection control circuit can control the second transceiver link to support the transmission and main set reception of the second RF signal, and control the receiving link currently used for target reception to support diversity reception of the second RF signal.

[0121] In the radio frequency system provided in this embodiment, the detection control circuit can be used to detect a dual-card scenario in which dual-band signals communicate simultaneously, and when it is determined that there is no mutual interference between the dual-band signals, the switching of the main set receiving link of the second radio frequency signal can be realized, and it can be switched to the sub-receiving link in the second transceiver link connected to the second antenna. In this way, the first antenna and the second antenna can be used as the transmitting / main set receiving antennas of the dual-band signal, respectively, which can improve the communication performance of the dual-band signal.

[0122] like Fig.18 As shown, an embodiment of the present application also provides a radio frequency link switching method, which can be applied to the radio frequency system of the aforementioned embodiment. The radio frequency system may include a radio frequency transceiver, and a radio frequency transceiver circuit connected to the radio frequency transceiver. The radio frequency transceiver circuit may be configured with a first transceiver link, a second transceiver link, and a receiving link. Among them, the first transceiver link is connected to the radio frequency transceiver and the first antenna respectively. The second transceiver link is connected to the radio frequency transceiver and the second antenna respectively. Among them, the antennas connected to the first transceiver link and the second transceiver link may be respectively as follows Figure 3 , 4 The physical space distance between the first antenna and the second antenna is the smallest relative to the physical space distance between the other two antennas. However, the antenna efficiency of the first antenna and the second antenna is the highest.

[0123] In an embodiment of the present application, the first transceiver link and the second transceiver link are in working state at the same time to support the simultaneous transmission of the first RF signal and the second RF signal, and to simultaneously support the main set reception of the first RF signal and the target reception of the second RF signal.

[0124] In one embodiment, the radio link switching method includes steps 1802 to 1804.

[0125] Step 1802: monitor whether there is interference between the first radio frequency signal and the second radio frequency signal.

[0126] Wherein, the RF system can monitor whether there is self-interference between the supported first RF signal and the second RF signal. For example, if the multiple harmonic frequencies of the transmitted signal of the first RF signal just fall into the frequency range of the received signal of the second RF signal, the transmitted signal of the first RF signal will interfere with the reception of the second RF signal, and it can be considered that there is interference between the first RF signal and the second RF signal.

[0127] In the embodiment of the present application, the detection control circuit in the radio frequency system can monitor whether the radio frequency signals currently supported by the first transceiver link and the second transceiver link meet the preset conditions. If they meet the preset conditions, it can be considered that there is interference between the first radio frequency signal and the second radio frequency signal. Further, the detection control circuit may include a baseband processor and a modem connected to the radio frequency transceiver, or may be a modem.

[0128] The preset condition may include an interference combination in which the first radio frequency signal and the second radio frequency signal have self-interference. The interference combination may include the following methods:

[0129] The first radio frequency signal is an n8 frequency band signal, and the second radio frequency signal is a B3 or n3 frequency band signal.

[0130] The first radio frequency signal is a n28 frequency band signal, and the second radio frequency signal is a B1 or n1 frequency band signal.

[0131] The first radio frequency signal is a B3 or n3 frequency band signal, and the second radio frequency signal is an n78 frequency band signal.

[0132] It should be noted that the interference combination of the first RF signal and the second RF signal with self-interference is not limited to the above examples, and may also be other combinations, which are not listed here one by one.

[0133] Step 1804, when there is interference between the first RF signal and the second RF signal, control the first transceiver link to maintain the transmission and main set reception of the first RF signal, control the transmission link in the second transceiver link to maintain the transmission of the second RF signal, control the sub-receive link in the second transceiver link to switch from the main set reception of the second RF signal to the diversity reception of the second RF signal, and control the receive link to switch from the diversity reception of the second RF signal to the main set reception of the second RF signal.

[0134] In an embodiment of the present application, a first transceiver link, a second transceiver link and a receiving link are configured in the radio frequency system. In the initial state, the first transceiver link is used to support the transmission and main set reception of the first radio frequency signal, the second transceiver link supports the transmission and main set reception of the second radio frequency signal, and the receiving link supports the diversity reception of the first radio frequency signal and the second radio frequency signal. When interference is detected between the first radio frequency signal and the second radio frequency signal, the radio frequency system can control the first transceiver link to maintain the transmission and main set reception of the first radio frequency signal, control the transmission link in the second transceiver link to maintain the transmission of the second radio frequency signal, control the sub-receive link in the second transceiver link to switch from the main set reception of the second radio frequency signal to the diversity reception of the second radio frequency signal, and control the receiving link to switch from the diversity reception of the second radio frequency signal to the main set reception of the second radio frequency signal, and maintain the diversity reception of the first radio frequency signal by the receiving link.

[0135] In an embodiment of the present application, the first transceiver link is connected to the first antenna, the second transceiver link is connected to the second antenna, and the receiving link is connected to the third antenna, wherein the first antenna can be set on the top frame, the second antenna is set on the first side frame close to the top frame, and the third antenna can be set on the second side frame. Among them, the physical space distance between the first antenna and the second antenna is the closest, and the isolation between the two antennas is low, but the first antenna and the third antenna have a relatively good isolation because of the relatively far spatial distance. It can be understood that the isolation between the receiving link (for example, the diversity receiving link of the second RF signal after switching) and the first transceiver link is greater than the isolation between the sub-receiving link in the second transceiver link and the first transceiver link.

[0136] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the sub-receiver link in the second transceiver link is controlled to switch from the main set reception of the second RF signal to the diversity reception of the second RF signal, and the receive link is controlled to switch from the diversity reception of the second RF signal to the main set reception of the second RF signal, wherein the isolation between the receive link (for example, the diversity receive link of the second RF signal after switching) and the first transceiver link is greater than the isolation between the sub-receiver link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be utilized to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance.

[0137] like Fig.19As shown, an embodiment of the present application also provides a radio frequency link switching method, which can be applied to the radio frequency system in the aforementioned embodiment. Different from the radio frequency link switching method in the aforementioned embodiment, the radio frequency link switching method in this embodiment is applied to a radio frequency system including a first transceiver link, a second transceiver link and three receiving links. Among them, the first transceiver link is connected to the first antenna, the second transceiver link is connected to the second antenna, and the three receiving links correspond to the third antenna, the third antenna, and the fifth antenna, respectively.

[0138] In one embodiment, the radio link switching method includes steps 1902 to 1904.

[0139] Step 1902: monitor whether there is interference between the first radio frequency signal and the second radio frequency signal.

[0140] Step 1904, when there is interference between the first RF signal and the second RF signal, control the first transceiver link to maintain the transmission and main set reception of the first RF signal, control the transmission link in the second transceiver link to maintain the transmission of the second RF signal, control the sub-receive link in the second transceiver link to switch to the target reception of the second RF signal, and control the target receive link to switch to the main set reception of the second RF signal.

[0141] In the embodiment of the present application, a first transceiver link, a second transceiver link and three receiving links are configured in the radio frequency system. In the initial state, the first transceiver link is used to support the transmission and main set reception of the first radio frequency signal, the second transceiver link supports the transmission and main set reception of the second radio frequency signal, one receiving link supports the diversity reception of the first radio frequency signal and the second radio frequency signal, another receiving link supports the first MIMO reception of the second radio frequency signal, and another receiving link supports the second MIMO reception of the second radio frequency signal.

[0142] In the present application, the first antenna can be set on the top frame, the second antenna is set on the first side frame close to the top frame, the third antenna can be set on the bottom frame, the fourth antenna is set on the second side frame, and the fifth antenna is set on the top frame and close to the fourth antenna. Among them, the physical space distance between the first antenna and the second antenna 1 is the shortest, and the isolation between the two antennas is low, but the first antenna and the other three antennas, such as the third antenna, the fourth antenna and the fifth antenna, have better isolation between the two antennas because of the relatively far spatial distance. It can be understood that the isolation between the target receiving link of the second RF signal and the first transceiver link is greater than the isolation between the sub-receiver link in the second transceiver link and the first transceiver link.

[0143] When interference is detected between the first RF signal and the second RF signal, the RF system can control the first transceiver link to maintain the transmission and main set reception of the first RF signal, control the transmission link in the second transceiver link to maintain the transmission of the second RF signal, control the sub-receive link in the second transceiver link to switch from the main set reception of the second RF signal to the target reception of the second RF signal, and control the target reception link to switch to the main set reception of the second RF signal. Among them, the target reception link is one of the three reception links, and the target reception includes one of diversity reception, first MIMO reception and second MIMO reception. The remaining two of the three reception links (except the target reception link) are respectively used to support non-target reception of the second RF signal. Among them, non-target reception includes one of diversity reception, first MIMO reception and second MIMO reception, and each reception link supports different non-target reception. As mentioned above, the target reception link is the main set reception link of the second RF signal; the remaining two reception links can be the first MIMO reception link of the second RF signal, the second MIMO reception link of the second RF signal or the diversity reception link of the second RF signal. It can be understood that the remaining two receiving chains can be used to support the main set reception of the second RF signal and the reception other than the target reception, respectively.

[0144] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the sub-receive link in the second transceiver link is controlled to switch to the target reception of the second RF signal, and the target receive link is controlled to switch to the main set reception of the second RF signal; wherein the isolation between the target receive link of the second RF signal and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be used to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance.

[0145] like Fig. 20 As shown, an embodiment of the present application further provides a radio frequency link switching method, the radio frequency link switching method including steps 2002-2004.

[0146] Step 2002: monitor whether there is interference between the first radio frequency signal and the second radio frequency signal.

[0147] Step 2004, when there is interference between the first RF signal and the second RF signal, control the first transceiver link to maintain the transmission and main set reception of the first RF signal, control the transmission link in the second transceiver link to maintain the transmission of the second RF signal, control the sub-receive link in the second transceiver link to switch to the diversity reception of the second RF signal, and control the target receive link to switch to the main set reception of the second RF signal.

[0148] The RF system is configured with three receiving links, namely the first receiving link, the second receiving link and the third receiving link, wherein, in the initial state, the first receiving link is used to support diversity reception of the first RF signal and the second RF signal, the second receiving link is used to support the first MIMO reception of the second RF signal, and the third receiving link can be used to support the second MIMO reception of the second RF signal. It should be noted that the initial state refers to the state of the RF system when the RF system supports communication between the first RF signal and the second RF signal and there is no interference between the first RF signal and the second RF signal.

[0149] In the case where there is interference between the first RF signal and the second RF signal, the RF system can configure the first receiving link as the target receiving link to switch to the main set reception of the second RF signal, and control the sub-receiving link in the second transceiver link to switch to the diversity reception of the second RF signal. It can be understood that in the case where there is interference between the first RF signal and the second RF signal, the RF system can use the first receiving link as the main set reception link of the second RF signal, and can use the sub-receiving link in the second transceiver link as the diversity reception link of the second RF signal. At the same time, the first transceiver link maintains the transmission and main set reception of the first RF signal, and the first receiving link maintains the diversity reception of the first RF signal.

[0150] Step 2006: Control the remaining two receiving links to respectively maintain the first MIMO reception and the second MIMO reception of the second radio frequency signal.

[0151] In the case where there is interference between the first RF signal and the second RF signal, the RF system may maintain the first MIMO reception of the second RF signal by the second receiving link and the second MIMO reception of the second RF signal by the third receiving link.

[0152] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the sub-receive link in the second transceiver link is controlled to switch to the diversity reception of the second RF signal, and the first receive link is controlled to switch to the main set reception of the second RF signal; wherein the isolation between the first receive link (for example, the main set receive link of the second RF signal) and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be utilized to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance.

[0153] like Fig.21 As shown, an embodiment of the present application further provides a radio frequency link switching method, the radio frequency link switching method including steps 2102-2104.

[0154] Step 2102: monitor whether there is interference between the first radio frequency signal and the second radio frequency signal.

[0155] Step 2104, when there is interference between the first RF signal and the second RF signal, control the first transceiver link to maintain the transmission and main set reception of the first RF signal, control the transmission link in the second transceiver link to maintain the transmission of the second RF signal, control the sub-receive link in the second transceiver link to switch to the first MIMO reception of the second RF signal, and control the target receive link to switch to the main set reception of the second RF signal.

[0156] The RF system is configured with three receiving links, namely the first receiving link, the second receiving link and the third receiving link, wherein, in the initial state, the first receiving link is used to support diversity reception of the first RF signal and the second RF signal, the second receiving link is used to support the first MIMO reception of the second RF signal, and the third receiving link can be used to support the second MIMO reception of the second RF signal. It should be noted that the initial state refers to the state of the RF system when the RF system supports communication between the first RF signal and the second RF signal and there is no interference between the first RF signal and the second RF signal.

[0157] In the case where there is interference between the first RF signal and the second RF signal, the RF system can configure the second receiving link as the target receiving link to switch to the main set reception of the second RF signal, and control the sub-receiving link in the second transceiver link to switch to the first MIMO reception of the second RF signal. It can be understood that in the case where there is interference between the first RF signal and the second RF signal, the RF system can use the second receiving link as the main set reception link of the second RF signal, and can use the sub-receiving link in the second transceiver link as the first MIMO reception link of the second RF signal. At the same time, the first transceiver link maintains the transmission and main set reception of the first RF signal, and the first receiving link maintains the diversity reception of the first RF signal.

[0158] Step 2106: Control the remaining two receiving links to respectively maintain diversity reception and second MIMO reception of the second RF signal.

[0159] In the case where interference exists between the first RF signal and the second RF signal, the RF system may maintain diversity reception of the first RF signal and the second RF signal by the first receiving link and second MIMO reception of the second RF signal by the third receiving link.

[0160] Optionally, the steps in step 2104: controlling the sub-receiving link in the second transceiver link to switch to the first MIMO reception of the second RF signal, and controlling the target receiving link to switch to the main set reception of the second RF signal, can also be replaced by controlling the sub-receiving link in the second transceiver link to switch to the second MIMO reception of the second RF signal, and controlling the target receiving link to switch to the main set reception of the second RF signal. Correspondingly, step 2106 can be replaced by: controlling the remaining two receiving links to respectively maintain diversity reception and first MIMO reception of the second RF signal.

[0161] The RF link switching method in the embodiment of the present application monitors whether there is interference between the first RF signal and the second RF signal. When there is interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain the transmission and main set reception of the first RF signal, the sub-receive link in the second transceiver link is controlled to switch to the first / second MIMO reception of the second RF signal, and the second / third receive link is controlled to switch to the main set reception of the second RF signal; wherein the isolation between the second / third receive link (for example, the main set receive link of the second RF signal) and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link. The advantage of the isolation between the links can be utilized to improve the self-interference coexistence problem in the dual-card scenario, improve the call completion rate of the second RF signal, optimize the application experience of the dual-card scenario, and improve the communication performance.

[0162] like Fig. 22As shown, further, the electronic device 10 is taken as a mobile phone as an example for description, specifically, Fig. 22 As shown, the mobile phone may include a memory 21 (which optionally includes one or more computer-readable storage media), a processing circuit 22, a radio frequency system 20, and an input / output (I / O) subsystem 24. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will appreciate that Fig. 22 The mobile phone shown does not constitute a limitation of the mobile phone, and may include more or fewer components than shown, or combine certain components, or arrange the components differently. Fig. 22 The various components shown in the EMBODIMENTS 2000 are implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application specific integrated circuits.

[0163] The memory 21 optionally includes a high-speed random access memory, and optionally also includes a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplarily, the software components stored in the memory 21 include an operating system 211, a communication module (or an instruction set) 212, a global positioning system (GPS) module (or an instruction set) 213, etc.

[0164] The processing circuit 22 and other control circuits may be used to control the operation of the mobile phone. The processing circuit 22 may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, etc.

[0165] Among them, the I / O subsystem 26 couples the input / output peripherals on the mobile phone, such as the keypad and other input control devices, to the peripheral device interface. The I / O subsystem 26 optionally includes a touch screen, a key, a tone generator, an accelerometer (motion sensor), an ambient light sensor and other sensors, a light emitting diode and other status indicators, a data port, etc. Exemplarily, a user can control the operation of the mobile phone by supplying commands via the I / O subsystem 26, and can use the output resources of the I / O subsystem 26 to receive status information and other outputs from the mobile phone. For example, a user can press button 261 to start the mobile phone or turn off the mobile phone.

[0166] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A radio frequency system, characterized in that: include: RF transceiver; Radio frequency transceiver circuit, including: A first transceiver link, connected to the RF transceiver and the first antenna, respectively, for supporting transmission and main set reception of a first RF signal; A second transceiver link is connected to the RF transceiver and the second antenna, respectively, and is used to support transmission and target reception of a second RF signal; the frequency range of multiple harmonics of the first RF signal at least partially overlaps with the frequency range of the second RF signal; At least one receiving link, each receiving link is connected to the RF transceiver and the antenna respectively, and one receiving link is used to support the main set reception of the second RF signal; wherein, In the case where there is one receiving link, the target reception is diversity reception, and the receiving link is further used to support diversity reception of the first radio frequency signal; In the case where there are multiple receiving links, the target reception includes one of diversity reception, first MIMO reception and second MIMO reception. Each of the receiving links is used to support non-target reception of the second RF signal. The non-target reception is different from the target reception. The antennas connected to each of the receiving links are different and are antennas other than the first antenna and the second antenna.

2. The radio frequency system according to claim 1, characterized in that: The radio frequency transceiver circuit includes three receiving chains, wherein one of the three receiving chains is used to support the reception of the main set of the second radio frequency signal; The remaining two of the three receiving links are respectively used to support the non-target reception of the second radio frequency signal; One of the three receiving links is also used to support diversity reception of the first radio frequency signal; wherein, The non-target reception includes one of the diversity reception, the first MIMO reception, and the second MIMO reception, and the non-target reception supported by each receiving link is different.

3. The radio frequency system according to claim 2, characterized in that: The plurality of receiving links include a first receiving link, a second receiving link and a third receiving link; wherein, The second transceiver link is used to support transmission and diversity reception of the second radio frequency signal; The first receiving link is connected to the RF transceiver and the third antenna respectively, and is used to support diversity reception of the first RF signal and main set reception of the second RF signal; The second receiving link is connected to the RF transceiver and the fourth antenna respectively, and is used to support the first MIMO reception of the second RF signal; The third receiving link is connected to the RF transceiver and the fifth antenna respectively, and is used to support the second MIMO reception of the second RF signal.

4. The radio frequency system according to claim 2, characterized in that: The plurality of receiving links include a first receiving link, a second receiving link and a third receiving link; wherein, The second transceiver link is used to support transmission of the second radio frequency signal and first MIMO reception; The first receiving link is connected to the RF transceiver and the third antenna respectively, and is used to support diversity reception of the first RF N8 and diversity reception of the second RF signal; The second receiving link is connected to the RF transceiver and the fourth antenna respectively, and is used to support the reception of the main set of the second RF signal; The third receiving link is connected to the RF transceiver and the fifth antenna respectively, and is used to support the second MIMO reception of the second RF signal.

5. The radio frequency system according to claim 2, characterized in that: The plurality of receiving links include a first receiving link, a second receiving link and a third receiving link; wherein, The second transceiver link is used to support transmission of the second radio frequency signal and second MIMO reception; The first receiving link is connected to the RF transceiver and the third antenna respectively, and is used to support diversity reception of the first RF signal and diversity reception of the second RF signal; The second receiving link is connected to the RF transceiver and the fourth antenna respectively, and is used to support the first MIMO reception of the second RF signal; The third receiving link is connected to the RF transceiver and the fifth antenna respectively, and is used to support the reception of the main set of the second RF signal B3.

6. The radio frequency system according to any one of claims 3 to 5, characterized in that: The second receiving link is further used to support a first MIMO reception of the first radio frequency signal; The third receiving link is further used to support a second MIMO reception of the first radio frequency signal.

7. The radio frequency system according to claim 1, characterized in that: The radio frequency transceiver circuit comprises: A first transceiver module, configured with the first transceiver link; A second transceiver module, configured with the second transceiver link; At least one receiving module, each receiving module is configured with one receiving link.

8. The radio frequency system according to claim 7, characterized in that: The first transceiver module is also used to support the transmission and main set reception of multiple third radio frequency signals. The first transceiver module includes: a first power amplifier, a first selection switch, a second selection switch and multiple first filtering units, wherein: The input end of the first power amplifier is connected to the output end of the RF transceiver, the output end of the first power amplifier is connected to the first end of the first selection switch, multiple second ends of the first selection switch are respectively connected to a first end of multiple first filtering units, the other first ends of multiple first filtering units are respectively connected to the receiving end of the RF transceiver, multiple second ends of multiple first filtering units are respectively connected to multiple first ends of the second selection switch, and the second end of the second selection switch is connected to the first antenna; wherein, The radio frequency signal output by one of the first filtering units is the first radio frequency signal, and the radio frequency signals output by the other first filtering units are the third radio frequency signals, and the frequency bands of the third radio frequency signals are different; The first power amplifier, the first selection switch, the first filtering unit for outputting the first radio frequency signal, and the second selection switch constitute the first transceiver link.

9. The radio frequency system according to claim 8, characterized in that: The second transceiver module is also used to support the transmission and target reception of multiple fourth radio frequency signals, and the second transceiver module includes: a second power amplifier, a third selection switch, a fourth selection switch and multiple second filtering units, wherein: The input end of the second power amplifier is connected to the output end of the RF transceiver, the output end of the first power amplifier is connected to the first end of the first selection switch, the multiple second ends of the third selection switch are respectively connected to a first end of the multiple second filtering units, the other first ends of the multiple second filtering units are respectively connected to the receiving end of the RF transceiver, the multiple second ends of the multiple second filtering units are respectively connected to the multiple first ends of the fourth selection switch, and the second end of the fourth selection switch is connected to the second antenna; wherein, One RF signal output by the second filtering unit is the second RF signal, and the other RF signals output by the second filtering units are the fourth RF signals, and the frequency bands of the fourth RF signals are different; The second power amplifier, the third selection switch, the second filtering unit for outputting the second radio frequency signal, and the fourth selection switch constitute the second transceiver link.

10. The radio frequency system according to claim 9, characterized in that: The radio frequency system also includes: a detection control circuit, connected to the RF transceiver and the RF transceiver circuit, respectively, for controlling the second transceiver link to support transmission and main set reception of the second RF signal when it is detected that the RF signals currently transmitted and received by the first transceiver module and the second transceiver module do not meet the preset conditions, and controlling the receiving link currently used for the target reception to support diversity reception of the second RF signal; The preset condition is that the radio frequency signal currently received and sent by the first transceiver module is the first radio frequency signal, and the radio frequency signal currently received and sent by the second transceiver module is the second radio frequency signal.

11. The radio frequency system according to claim 1, characterized in that: The first radio frequency signal is an N8 frequency band signal, and the second radio frequency signal is a B3 or N3 frequency band signal; or, The first radio frequency signal is an N28 frequency band signal, and the second radio frequency signal is a B1 or B1 frequency band signal; or, The first radio frequency signal is a B3 or N3 frequency band signal, and the second radio frequency signal is an N78 frequency band signal.

12. An electronic device, characterized in that: Comprising the radio frequency system and multiple antennas as described in claims 1-11; wherein, The first transceiver link is connected to the first antenna, the second transceiver link is connected to the second antenna, the receiving link is connected to the third antenna, and the receiving links are respectively connected to one antenna correspondingly. The antennas connected to each receiving link are different and are antennas other than the first antenna and the second antenna. Among the multiple antennas, the physical space distance between the first antenna and the second antenna is the shortest.

13. The electronic device according to claim 12, characterized in that: The electronic device further comprises: a back cover and a frame, wherein the frame is connected to the back cover to define a receiving cavity, wherein the frame comprises a top frame and a bottom frame arranged opposite to each other, and a first side frame and a second side frame connected between the top frame and the bottom frame, wherein the first side frame and the second side frame are arranged opposite to each other; wherein, The first antenna is arranged on the top frame, the second antenna is arranged on the first side frame, and other antennas are arranged on the frames respectively.

14. The electronic device according to claim 13, characterized in that: The radio frequency transceiver circuit includes a first receiving link connected to the third antenna, a second receiving link connected to the fourth antenna, and a third receiving link connected to the fifth antenna; wherein, The third antenna is arranged on the bottom frame, the fourth antenna is arranged on the second side frame, and the fifth antenna is arranged on the top frame and is arranged close to the fourth antenna.

15. A radio frequency link switching method, characterized in that: The method comprises: monitoring whether there is interference between the first radio frequency signal and the second radio frequency signal; In the event of interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain transmission and main set reception of the first RF signal, the transmission link in the second transceiver link is controlled to maintain transmission of the second RF signal, the sub-receiver link in the second transceiver link is controlled to switch from main set reception of the second RF signal to diversity reception of the second RF signal, and the receive link is controlled to switch from diversity reception of the second RF signal to main set reception of the second RF signal; wherein the isolation between the receive link and the first transceiver link is greater than the isolation between the sub-receiver link in the second transceiver link and the first transceiver link.

16. A radio frequency link switching method, characterized in that: The method comprises: monitoring whether there is interference between the first radio frequency signal and the second radio frequency signal; In the event of interference between the first RF signal and the second RF signal, the first transceiver link is controlled to maintain transmission and main set reception of the first RF signal, the transmission link in the second transceiver link is controlled to maintain transmission of the second RF signal, the sub-receive link in the second transceiver link is controlled to switch to target reception of the second RF signal, and the target receive link is controlled to switch to main set reception of the second RF signal; wherein the isolation between the target receive link of the second RF signal and the first transceiver link is greater than the isolation between the sub-receive link in the second transceiver link and the first transceiver link, the target reception includes one of diversity reception, first MIMO reception and second MIMO reception, and the target receive link is one of the three receive links.

17. The radio frequency link switching method according to claim 16, characterized in that: The controlling the sub-receiving link in the second transceiver link to switch to the target reception of the second radio frequency signal, and controlling the target receiving link to switch to the main set reception of the second radio frequency signal, comprises: Controlling the sub-receiving link in the second transceiver link to switch to diversity reception of the second radio frequency signal; Controlling the target receiving link to switch to a main set of receiving the second radio frequency signal; The method further comprises: The remaining two receiving links are controlled to respectively maintain the first MIMO reception and the second MIMO reception of the second radio frequency signal.

18. The radio frequency link switching method according to claim 16, characterized in that: The controlling the sub-receiving link in the second transceiver link to switch to the target reception of the second radio frequency signal, and controlling the target receiving link to switch to the main set reception of the second radio frequency signal, comprises: Controlling the sub-receiving link in the second transceiver link to switch to the first MIMO reception of the second radio frequency signal; Controlling the target receiving link to switch to a main set of receiving the second radio frequency signal; The method further comprises: The remaining two receiving links are controlled to respectively maintain diversity reception and second MIMO reception of the second radio frequency signal.

19. The radio frequency link switching method according to claim 16, characterized in that: The controlling the sub-receiving link in the second transceiver link to switch to the target reception of the second radio frequency signal, and controlling the target receiving link to switch to the main set reception of the second radio frequency signal, comprises: Controlling the sub-receiving link in the second transceiver link to switch to a second MIMO reception of the second radio frequency signal; Controlling the target receiving link to switch to a main set of receiving the second radio frequency signal; The method further comprises: The remaining two receiving links are controlled to respectively maintain diversity reception and first MIMO reception of the second radio frequency signal.

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