CN115549701A

CN115549701A - Radio frequency switch circuit, control method and communication equipment

Info

Publication number: CN115549701A
Application number: CN202211145943.4A
Authority: CN
Inventors: 程建江; 程黎辉; 关亚东
Original assignee: Nanchang Longqi Intelligent Technology Co ltd
Current assignee: Nanchang Longqi Intelligent Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-30

Abstract

The application provides a radio frequency switch circuit, a control method and communication equipment, and relates to the field of communication circuits. The radio frequency switch circuit may include a first switch module, a second switch module, a plurality of antenna terminals, and a plurality of radio frequency signal terminals. The first switch module may include at least two first fixed ends and a plurality of first movable ends. The second switch module may include at least three second fixed terminals and a plurality of second movable terminals. Wherein, two first stiff ends and two second stiff ends can be connected with an antenna respectively. A first movable end is connected with a second fixed end. The other first movable ends and the second movable ends are connected with the radio frequency signal end. The radio frequency switch circuit can control each first fixed end to be communicated with one first movable end respectively and each second fixed end to be communicated with one second movable end respectively according to the control information. The method reduces the performance difference loss.

Description

Radio frequency switch circuit, control method and communication equipment

Technical Field

The present application relates to the field of communication circuits, and in particular, to a radio frequency switch circuit, a control method, and a communication device.

Background

With the popularization and development of the 5G technology, the 5G mobile communication technology is more and more widely applied to electronic devices. The rf switch is usually installed between the rf front end and the antenna to perform the function of turning on the signal or turning off the connection.

In the prior art, in the design process of a 5G radio frequency switch, the problems of independent networking (SA) and Non-independent Networking (NSA) need to be considered first. Next, in order to meet the needs of the operator, it is necessary to make Multiple bands such as B1/N1, B41/N41, and N78 support 4X4 Multiple input and output (MIMO). In addition, in order to solve the problem of signal degradation caused by actual use of the handheld mobile phone antenna, a diversity antenna switch (asidv) needs to be added.

However, the prior art 5G rf switch is not only high in cost, but also has a problem that the performance is poor and the loss is large when the signal passes through a plurality of DP4T devices.

Disclosure of Invention

The application provides a radio frequency switch circuit, a control method and communication equipment, which are used for solving the problem of high performance difference and loss in the prior art.

In a first aspect, the present application provides a radio frequency switch circuit applied to a communication device, the circuit including: the antenna comprises a first switch module, a second switch module, a plurality of antenna ends and a plurality of radio frequency signal ends; the plurality of antenna ends are marked as a first antenna end, a second antenna end, a third antenna end and a fourth antenna end;

the first switch module comprises at least two first fixed ends and a plurality of first movable ends, wherein the first fixed end is connected with the first antenna end, and the second first fixed end is connected with the second antenna end; one first movable end is connected with the second fixed end of the second switch module, and the rest first movable ends are connected with one part of radio frequency signal ends;

the second switch module comprises at least three second fixed ends and a plurality of second movable ends, the second fixed ends are connected with a third antenna end, and the third fixed ends are connected with a fourth antenna end; the plurality of second movable ends are connected with the other part of radio frequency signal ends;

and controlling each first fixed end of the first switch module to be communicated with one first movable end and each second fixed end of the second switch module to be communicated with one second movable end respectively, so that the received signals of each antenna end are transmitted to the corresponding radio-frequency signal end.

Optionally, the plurality of radio frequency signal terminals at least include a diversity reception multiple input and output pin (N1 DRX MIMO) of the first frequency band, a diversity reception multiple input and output pin (N41 DRX MIMO) of the second frequency band, a main set transmission and reception shared pin (N41 TRX) of the second frequency band, a main set reception multiple input and output pin (N1 PRX MIMO) of the first frequency band, and a main set reception multiple input and output pin (N41 PRX MIMO) of the second frequency band, and the second switch module specifically includes: a third device, a fourth device, and a fifth device;

the third device comprises at least three third fixed ends and at least three third movable ends, and all the third fixed ends of the third device are all the second fixed ends of the second switch module; the fourth device comprises at least one fourth fixed end and a plurality of fourth movable ends, and the fifth device comprises at least one fifth fixed end and a plurality of fifth movable ends;

the first and third fixed ends of the third device are connected with a first movable end of the first switch module, the second and third fixed ends of the third device are connected with a third antenna end, and the third and third fixed ends of the third device are connected with a fourth antenna end;

the first and third movable ends of the third device are connected with a fourth fixed end of the fourth device; a third movable end of the third device is connected with a fifth fixed end of the fifth device;

the second third active end of the third device is connected with a main set transmitting and receiving shared pin (N41 TRX) of the second frequency band, the first fourth active end of the fourth device is connected with a diversity receiving multiple input and output pin (N1 DRX MIMO) of the first frequency band, the second fourth active end of the fourth device is connected with a diversity receiving multiple input and output pin (N41 DRX MIMO) of the second frequency band, the first fifth active end of the fifth device is connected with a main set receiving multiple input and output pin (N1 PRX MIMO) of the first frequency band, and the second fifth active end of the fifth device is connected with a main set receiving multiple input and output pin (N41 PRX MIMO) of the second frequency band.

Optionally, the third device is a three-pole, three-throw switching device; the fourth device and the fifth device are single-pole double-throw switching devices.

Optionally, the plurality of radio frequency signal terminals at least include a first set of transmission and reception common pins (TRX N1& TRX other MH band) of the first frequency band and other medium-high frequency bands, a first set of transmission and reception common pins (CA _ MB _ B41 or DC _ MB _ N41) of the medium-frequency band, and diversity reception pins (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band, and other medium-high frequency bands, and the first switch module specifically includes: a first device and an interposer;

the first device comprises at least two sixth fixed ends and at least three sixth movable ends, and all the sixth fixed ends of the first device are all the first fixed ends of the first switch module;

the first sixth fixed end of the first device is connected with the first antenna end; the second sixth fixed end of the first device is connected with the second antenna end;

a first sixth active end of the first device is connected with a first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band), and a third sixth active end of the first device is connected with the first frequency band, the second frequency band and other middle and high frequency band diversity receiving pins (DRX N1/N41& DRX other MH band);

the second and sixth movable ends of the first device are connected with the first end of the combiner, and the second end of the combiner is connected with a radio frequency signal end; the third end of the combiner is connected with the first and second fixed ends of the second switch module.

In a second aspect, the present application provides a method for controlling a radio frequency switch circuit, including:

according to the target frequency band, determining a target antenna end, a target radio frequency signal end and a communication path between the target radio frequency signal end and the target antenna end;

according to the communication path between the target radio-frequency signal end and the target antenna end, a control signal is generated, the control signal is used for controlling the communication between the plurality of first fixed ends and the plurality of first movable ends in the first switch module and controlling the communication between the plurality of second fixed ends and the plurality of second movable ends in the second switch module, and therefore the target antenna end and the target radio-frequency signal end are communicated.

Optionally, according to the target frequency band, determining a target antenna end, a target radio frequency signal end, and a communication path between the target radio frequency signal end and the target antenna end, specifically including:

acquiring a target frequency band, and determining a plurality of target radio frequency signal ends and a plurality of target antenna ends corresponding to the target frequency band according to the target frequency band;

and determining a communication path between each target radio frequency signal end and the target antenna end according to the signal type of each target antenna end and the signal type of each target radio frequency signal end.

Optionally, the first antenna end is a main set transmission and reception common antenna (TRX N1& TRX other band) of the first frequency band and the third frequency band, and a diversity reception multiple input and output antenna (DRX mimo N41) of the second frequency band; the second antenna end is a diversity receiving antenna (DRX n1/n41& DRX other band) of the first frequency band, the second frequency band and the third frequency band; the third antenna end is a main set transmitting and receiving shared antenna (TRX N41) of the second frequency band and a diversity receiving multi-input and output antenna (DRX MIMO N1) of the first frequency band; the fourth antenna end is a main set receiving multi-input and multi-output antenna (PRX MIMO N1 and N41) of the first frequency band and the second frequency band;

when the target frequency band is the first frequency band, the target radio frequency signal end comprises a diversity reception multi-input-output pin (N1 DRX MIMO) of the first frequency band, a main set reception multi-input-output pin (N1 PRX MIMO) of the first frequency band, a multi-band main set transmission and reception shared pin (TRX N1& TRX other band) of the first frequency band and the third frequency band, and a multi-band diversity reception pin (DRX N1N 41& DRX other band) of the first frequency band, the second frequency band and the third frequency band;

correspondingly, according to the signal type of each target antenna end and the signal type of each target radio frequency signal end, determining a communication path between each target radio frequency signal end and the target antenna end, specifically comprising:

communication paths between a first antenna end and multi-band master set transmitting and receiving common pins (TRX N1& TRX other band) of a first frequency band and a third frequency band, communication paths between a second antenna end and multi-band diversity receiving pins (DRX N1N 41& DRX other band), communication paths between a third antenna end and a diversity receiving multi-input-output pin (N1 DRX MIMO) of the first frequency band, and communication paths between a fourth antenna end and a master set receiving multi-input-output pin (N1 PRX MIMO) of the first frequency band are determined.

Optionally, generating a control signal according to a communication path between the target radio frequency signal end and the target antenna end, specifically including:

determining a switch parameter set corresponding to each communication path according to the communication paths between the target radio frequency signal end and the target antenna end;

and generating a control signal according to the switching parameter set corresponding to each communication path.

Optionally, the method further comprises:

when the signal intensity in communication paths between the first frequency band and other middle and high frequency band main set sending and receiving signals of the first antenna end and the first frequency band and other middle and high frequency band main set sending and receiving common pins (TRX N1& TRX other MH bands) is determined to be smaller than a preset threshold value, the first frequency band and other middle and high frequency band main set sending and receiving signals of the first antenna end are communicated with the first frequency band, the second frequency band and other middle and high frequency band diversity receiving pins (DRX N1/N41& DRX other MH bands), and the first frequency band, the second frequency band and other middle and high frequency band diversity receiving signals of the second antenna end are communicated with the first frequency band and other middle and high frequency band main set sending and receiving common pins (TRX N1& TRX other MH bands);

or, when the signal intensity in the communication path between the main set sending and receiving signal of the second frequency band of the third antenna terminal and the main set sending and receiving shared pin (N41 TRX) of the second frequency band is determined to be less than the preset threshold value, the main set sending signal of the main set sending and receiving shared pin (N41 TRX) of the second frequency band is connected to the fourth antenna terminal.

In a third aspect, the present application provides a communication device, where the communication device is provided with a controller and a radio frequency switch circuit in any one of the possible designs of the first aspect and the first aspect, and when the controller executes the control method in any one of the possible designs of the second aspect and the second aspect, the communication device implements 5G communication in a target frequency band.

The radio frequency switch circuit, the control method and the communication device provided by the application can comprise a first switch module, a second switch module, a plurality of antenna ends and a plurality of radio frequency signal ends; each antenna end can be connected with an antenna respectively; the first switch module may include at least two first fixed ends and a plurality of first movable ends; the two first fixed ends can be respectively connected with an antenna; one first movable end of the plurality of first movable ends is connected with one second fixed end of the second switch module; the rest first active terminals can be connected with a part of radio frequency signal terminals; the second switch module can comprise at least three second fixed ends and a plurality of second movable ends; one of the three second fixed ends is connected with the first switch module, and the other two second fixed ends are respectively connected with one antenna end; the plurality of second active terminals can be connected with the other part of radio frequency signal terminals; the first switch module and the second switch module can control each first fixed end to be communicated with one first movable end respectively and each second fixed end to be communicated with one second movable end communicating path respectively according to control information; the path formed after the communication enables each antenna end to receive signals and transmit the signals to the corresponding radio frequency signal end, and the effect of reducing performance difference loss is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings used in the embodiments or the description of the prior art are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a design of a radio frequency switch provided in the prior art of the present application;

fig. 2 is a radio frequency switch circuit according to an embodiment of the present application;

fig. 3 is another rf switch circuit provided in an embodiment of the present application;

fig. 4 is a schematic diagram of another rf switch circuit according to an embodiment of the present application;

fig. 5 is a schematic diagram of another rf switch circuit according to an embodiment of the present application;

fig. 6 is a flowchart of a control method of an rf switch circuit according to an embodiment of the present application;

fig. 7 is a flowchart of another control method for an rf switch circuit according to an embodiment of the present application;

fig. 8 is a schematic hardware structure diagram of a communication device according to an embodiment of the present application.

Reference numerals

10: a radio frequency switching circuit; 20: a controller; a communication device 30;

11: a first switch module; 111: a first device; 112: a combiner;

12: a second switch module; 121: a third device; 122: a fourth device; 123: and a fifth device.

Detailed Description

To make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the foregoing drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein.

The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise.

It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof.

The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "a, B or C" or "a, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

With the popularization and development of the 5G technology, the 5G communication technology is more and more widely applied to electronic devices. In a plurality of 5G products, the shipment volume of 5G mobile phones and 5G communication modules is increased year by year. Correspondingly, research and development companies and operators continuously increase the research and development investment of 5G, so that the 5G product is popularized and the life of people can be better improved. In the present application, for convenience of description, the 5G mobile phone and the electronic device equipped with the 5G communication module are collectively referred to as a communication device. In a communication device, an antenna, a radio frequency front end for implementing signal transceiving, and a radio frequency switch installed between the radio frequency front end and the antenna are generally included. The radio frequency switch functions to turn on a signal or to turn off a connection in the communication device.

Since the 5G signal includes both a stand-alone network (SA) and a Non-stand-alone Network (NSA). Therefore, the cases of SA and NSA need to be fully considered in the design process of the communication device. In addition, the communication device also needs to support Carrier Aggregation (CA). The operator may also request Multiple Input Multiple Output (MIMO) support for Multiple bands such as B1/N1, B41/N41, and N78. Among them, N41 and N78 also need to support the function of Sounding Reference Signal (SRS). In addition, in order to solve the problem of signal degradation caused by the handheld mobile phone antenna, the communication device needs to add an antenna diversity (ASDIV) function. In view of the above functions, developers need to design a radio frequency switch architecture after determining a radio frequency front end and an antenna. The design architecture of different rf switches can cause differences in cost and performance of the rf switches.

Fig. 1 shows a design of a radio frequency switch commonly available on the market. In the scheme, a device A, a device B and a device C are three double-pole four-throw (DP 4T) switching devices, and a device D is a medium-high frequency combiner (Diplexer). In this scheme 4 antennas are involved.

The antenna ANT1 may be connected to a first fixed end of the device a. The antenna ANT1 may receive N41 DRX MIMO band signals, TRX N1 and TRX other MH band signals. The TRX N1 and TRX other MH band signals can be received through the first active end of the device a. Signals of the N41 DRX MIMO frequency band can be received from the third active end of the device C. The antenna ANT1 may implement transmission of signals in the N41 DRX MIMO band through the device a, the device B, and the device C. Alternatively, the antenna ANT1 may implement transmission of the N41 DRX MIMO band signal through the device a, the device D, the device B, and the device C. The device D may also perform merging processing of two signals in the case of an intermediate frequency band and a B41 frequency band in CA, or in the case of an intermediate frequency band and an N41 frequency band in endec (NSA). One path of signals is transmitted and received by an intermediate frequency band master set under the condition that the intermediate frequency band and a B41 frequency band are in a CA condition, or the intermediate frequency band and an N41 frequency band are in an ENDC (NSA) condition. The other signal is a DRX MIMO signal of B41 or N41 in the case of the intermediate frequency band and the B41 band in the case of CA, or in the case of the intermediate frequency band and the N41 band in the case of ENDC (NSA). Here, CA _ MB _ B41 or DC _ MB _ N41 is used to indicate the if band and the B41 band in the case of CA, or the if band and the N41 band in the case of endec (NSA). Thus, two signals passing through device D may eventually be connected to antenna ANT1, including TRX other MH band and N41 DRX MIMO.

Wherein the antenna ANT5 may be connected to the second fixed end of the device a. The antenna ANT5 can transmit and receive DRX N1/N41& DRX other MH band frequency band signals. The DRX N1/N41& DRX other MH band signal can realize the signal transmission through the fourth active end of the device A.

Wherein the antenna ANT4 may be connected to a second fixed end of the device C. The first fixed end of the device C is connected to the device B, and is configured to implement transmission of an N41 DRX MIMO frequency band signal in the antenna ANT1. The antenna ANT4 may transceive TRX N41 and N1DRX MIMO band signals. The TRX N41 frequency band signal may be transmitted and received through the first active end of the device C. The N1DRX MIMO band signal may be received through the fourth active terminal of the device C.

Wherein the antenna ANT8 may be connected to a fourth fixed end of the device B. The first fixed end of the device B is connected to the device D, and the second fixed end of the device B is connected to the third active end of the device a, so as to implement transmission of N41 DRX MIMO frequency band signals in the antenna ANT1. The antenna ANT8 may receive PRX MIMO: N1/N41 frequency band signals. The N1PRX MIMO may implement signal reception through the second active terminal of the device C. The antenna ANT8 may implement transmission of signals in the N1PRX MIMO band through the device B and the device C. The device B can be connected with the first fixed end of the device C through the second movable end, so that the device B is connected with the device C. The N41PRX MIMO may implement signal reception through the first active terminal of device B.

However, in the solution of the rf switch shown in fig. 1, a total of 3 DP4T switching devices are used, which is relatively high in cost. In addition, in the above process, the N41 DRX MIMO band signal needs to be received by three DP4T switching devices, which causes a problem of large performance loss.

In order to optimize the above problem, the present application proposes a radio frequency switch circuit. The radio frequency switch circuit of the application can comprise 1 DP4T switch device, 1 middle-high frequency dipolexer, one 3P3T switch device and two SPDT RX switch devices. In which 1 3P3T switching device and 2 SPDT RX switching devices replace the two DP4T switching devices of device B and device C in the scheme shown in fig. 1. This replacement greatly reduces the cost of the radio frequency switching circuit. In addition, the radio frequency switch circuit of the application also meets the functional requirements of B1/N1 4X4MIMO, B41/N41 4X4MIMO, CA _ MB _ B41 (CA), DC _ MB _ N41 (NSA), N41 SRS and the like. In addition, the application also sets a preset threshold value. The controller in the communication device may determine whether it is necessary to switch the connection between the main set and the diversity of the signal by acquiring the signal strength and comparing the signal strength with a preset threshold, thereby implementing an ASDIV function. To sum up, this application has realized the effect that reduces radio frequency switch circuit cost through optimizing the switching device among the radio frequency switch circuit. Meanwhile, the switching devices in the radio frequency switching circuit can be switched on and optimized, the number of the switching devices through which frequency band signals such as N41 DRX MIMO pass is reduced, and performance difference loss is reduced.

The technical means of the present application will be described in detail with specific examples. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 illustrates a radio frequency switch circuit according to an embodiment of the present application. As shown in fig. 2, the radio frequency switch circuit 10 includes: the first switch module 11 and the second switch module 12 implement two modules of a switch function. The rf switch circuit 10 may further include a plurality of antenna terminals and a plurality of rf signal terminals. Wherein the plurality of antenna ends may be respectively labeled as a first antenna end, a second antenna end, a third antenna end, and a fourth antenna end. The antenna with the four antenna ends connected may be specifically as shown in fig. 2. The first antenna terminal is connected to the antenna ANT1. The second antenna terminal is connected to the antenna ANT5. The third antenna terminal is connected with the antenna ANT4. The fourth antenna terminal is connected to the antenna ANT8.

The first switch module 11 may include at least two first fixed ends and a plurality of first movable ends. The first switch module 11 may obtain a control signal sent by the controller 20. The control signal can control each first fixed end of the first switch module 11 to be connected with a first movable end. In the two first fixed ends of the first switch module 11, the first fixed end is connected to the first antenna end, and the second first fixed end is connected to the second antenna end. Among the plurality of first movable ends of the first switch module 11, a first movable end needs to be connected with the second fixed end of the second switch module 12. The remaining first active terminal of the first switch module 11 may be connected to a radio frequency signal terminal of a portion of the radio frequency switch circuit 10.

In one example, the first switch module 11 may include at least four first active terminals, and three first active terminals may be correspondingly connected to three rf signal terminals.

The second switch module 12 may include at least three second fixed ends and a plurality of second movable ends. The second switch module 12 may also acquire control signals sent by the controller 20. The control signal can control each second fixed terminal of the second switch module 12 to be connected to a second movable terminal. Among the three second fixed ends in this second switch module 12, the second fixed end is connected with the third antenna end, and the third second fixed end is connected with the fourth antenna end. And, of the three second fixed ends in the second switch module 12, the first second fixed end is connected with a first movable end of the first switch module 11. The plurality of second active terminals included in the first switch module 11 may be connected to another part of the rf signal terminals.

In one example, the first switch module 11 may include at least five second active terminals. The five second active terminals may be connected to 5 rf signal terminals of the rf switch circuit 10.

The first switch module 11 and the second switch module 12 can obtain the control signal sent by the controller 20. The first switch module 11 can control each first fixed end of the first switch module 11 to communicate with a first movable end, respectively, to form a path. And the second switch module 12 may control each second fixed end of the second switch module 12 to communicate with one second movable end, respectively, to form a path. The communication of the paths can enable each antenna end to receive signals and transmit the signals to the corresponding radio frequency signal end. Or, the communication of these paths may also enable part of the antenna ends to acquire the signal sent by the corresponding radio frequency signal end, and implement the sending of the signal.

Since the first antenna end may correspond to DRX MIMO: n41, TRX N1 and TRX other MH band. Therefore, the control signal can control the first fixed end of the first switch module 11 to connect with the first movable end of the first switch module 11, so as to form a communication path for the TRX N1 and the TRX other MH band signals. That is, the passage 4 communicates with the passage 1. Or, the control signal may also control the connection between the first fixed end of the first switch module 11 and the second movable end of the second switch module 12 to form a communication path for the N41 DRX MIMO band signal. That is, channel 4 may also be connected to channel 5 and to channel 9, forming a passageway.

Since the second antenna end can correspond to the frequency band signal of DRX N1/N41& DRX other MH band. Therefore, the control signal can control the second first fixed terminal of the first switch module 11 to connect with the fourth first active terminal of the first switch module 11, so as to form a communication path of the DRX N1/N41& DRX other MH band signal. That is, the passage 7 communicates with the passage 6.

Since the third antenna end may correspond to TRX N41& DRX MIMO: a frequency band signal of N1. Therefore, the control signal can control the second fixed end of the second switch module 12 to connect with the third second movable end of the second switch module 12, so as to form a communication path for the N41TRX band signal. That is, the passage 12 communicates with the passage 11. Alternatively, the control signal may control the second fixed end of the second switch module 12 to connect with the first second movable end of the second switch module 12, so as to form a communication path of the N1DRX MIMO frequency band signal. That is, the passage 12 communicates with the passage 8.

Since the fourth antenna end may correspond to PRX MIMO: N1/N41 frequency band signal. Therefore, the control signal can control the third second fixed end of the second switch module 12 to be connected with the fourth second movable end of the second switch module 12, so as to form a communication path for the N1PRX MIMO band signal. That is, the passage 16 communicates with the passage 13. Or, the control signal may control the third second fixed end of the second switch module 12 to be connected to the fifth second movable end of the second switch module 12, so as to form a communication path of the N41PRX MIMO band signal. That is, the passage 16 communicates with the passage 14.

For example, when the communication device needs to perform transceiving of an N1 frequency band signal, the communication device needs to communicate four paths, i.e., a first fixed end of the first switch module 11 and a first movable end of the first switch module 11, a second first fixed end of the first switch module 11 and a fourth first movable end of the first switch module 11, a second fixed end of the second switch module 12 and a first second movable end of the second switch module 12, and a third second fixed end of the second switch module 12 and a fourth second movable end of the second switch module 12. The communication of the four paths can enable the four antennas to receive and transmit the N1 frequency band signals after acquiring the N1 frequency band signals of different types.

The radio frequency switch circuit provided by the application can comprise a first switch module, a second switch module, a plurality of antenna ends and a plurality of radio frequency signal ends. Each antenna end may be connected to a respective antenna. The first switch module may include at least two first fixed ends and a plurality of first movable ends. The two first fixing ends may be respectively connected to an antenna. Among the plurality of first movable ends, one first movable end is connected with one second fixed end of the second switch module. The remaining first active terminals may be connected to a portion of the rf signal terminals. The second switch module may include at least three second fixed terminals and a plurality of second movable terminals. Among the three second fixed ends, one second fixed end is connected with the first switch module, and the rest two second fixed ends are respectively connected with one antenna end. The plurality of second active terminals may be connected to another portion of the rf signal terminals. The first switch module and the second switch module can control each first fixed end to be communicated with one first movable end respectively and each second fixed end to be communicated with one second movable end respectively according to control information to form a path. The path formed after the communication enables each antenna end to receive signals and transmit the signals to the corresponding radio frequency signal end. In the present application, by using the radio frequency switch circuit, the data amount of the switch device through which the N41 and other band signals pass is reduced, and the performance deterioration is reduced. Meanwhile, in the application, the radio frequency switch circuit reduces the cost of the radio frequency switch circuit by changing the mode of the switch device. In addition, the application realizes the use of DRX signals, TRX signals, DRX MIMO signals and PRX MOMI signals by using 4 antenna terminals respectively, and realizes the 4X4MIMO function of the first frequency band (N1) and the second frequency band (N41). Meanwhile, the application also realizes the 4X4MIMO function of the second band (N41) under the CA condition of the midrange band and the B41 band, or under the ENDC (NSA) condition of the midrange band and the N41 band, by adding a common pin (CA _ MB _ B41 or DC _ MB _ N41) for transmitting and receiving the main set of the midrange band. In a case where the if band and the B41 band are in CA, or the if band and the N41 band are in endec (NSA), in channel 2 corresponding to the common pin for transmission and reception of the main set of the if band (CA _ MB _ B41 or DC _ MB _ N41), signals that can be transmitted and received do not include the B1 band and the N1 band.

Fig. 3 illustrates another rf switching circuit provided in an embodiment of the present application. On the basis of the embodiment shown in fig. 2, as shown in fig. 3, the rf switch circuit 10 may be as follows:

the second switch module 12 may specifically be composed of three devices, namely, a third device 121, a fourth device 122 and a fifth device 123. The second switch module 12 may be connected to a diversity reception multiple input output pin (N1 DRX MIMO) of a first band, a diversity reception multiple input output pin (N41 DRX MIMO) of a second band, a main set transmission and reception common pin (N41 TRX) of the second band, a main set reception multiple input output pin (N1 PRX MIMO) of the first band, and a main set reception multiple input output pin (N41 PRX MIMO) of the second band among the plurality of radio frequency signal terminals.

The third device 121 includes at least three third fixed terminals and at least three third movable terminals. All the third fixed terminals of the third device 121 are all the second fixed terminals of the second switch module 12. The fourth device 122 includes at least one fourth fixed terminal and a plurality of fourth movable terminals. Fifth device 123 includes at least one fifth fixed end and a plurality of fifth movable ends therein.

A first and a third fixed ends of the third device 121 are connected to a first movable end of the first switch module 11. This connection may allow a path of communication between the third device 121 and the first switching module 11. The second third fixed terminal of the third device 121 is connected to the third antenna terminal. The third fixed end of the third device 121 is connected to the fourth antenna end. The first and third movable terminals of the third device 121 are connected to a fourth fixed terminal of the fourth device 122. The third movable terminal of the third device 121 is connected to a fifth fixed terminal of the fifth device 123. The second active terminal of the third device 121 is connected to a rf signal terminal. For example, as shown in fig. 3, the rf signal terminal connected to the second third active terminal of the third device 121 may be a main set transmit and receive common pin (N41 TRX) of the second frequency band.

The plurality of fourth active terminals of the fourth device 122 and the plurality of fifth active terminals of the fifth device 123 are connected to the plurality of rf signal terminals. For example, as shown in fig. 3, the fourth device 122 may include two fourth active terminals. The first and fourth active terminals of the fourth device 122 are connected to the diversity reception multiple input and output pin (N1 DRX MIMO) of the first frequency band. The second and fourth active terminals of the fourth device 122 are connected to the diversity receive multiple input output pin (N41 DRX MIMO) of the second frequency band. The fifth device 123 may include two fifth active terminals. The first and fifth active terminals of the fifth device 123 are connected to a primary set receiving multiple input and output pin (N1 PRX MIMO) of the first frequency band. The second fifth active terminal of the fifth device 123 is connected to the primary set receive multiple input multiple output pin (N41 PRX MIMO) of the second frequency band.

In one example, the third device 121 may include at least three third fixed ends and at least three third movable ends. Thus, the third device 121 can be a three pole, three throw switching device. The third device may also be a switching device in the form of a three-pole four-throw, four-pole four-throw, or the like. Only when the number of the fixed end and the movable end of the third device is more than three, the pins are inevitably unused, and the waste of the resources of the switch device is easily caused. Therefore, in this application, the use of a three pole, three throw switch is the most preferred of the third devices.

In one example, the fourth device 122 may include a fourth fixed end and a plurality of fourth movable ends. Thus, the fourth device 122 can be a single pole double throw switching device. Since the fifth device 123 may include a fifth fixed terminal and a plurality of fifth movable terminals. Thus, the fifth device 123 may be a single pole double throw switching device. The fourth device and the fifth device can also be single-pole triple-throw, single-pole four-throw and other switching devices. However, since only the first band (N1) and the second band (N41) need to add two auxiliary antennas of DRX MIMO and PRX MIMO in the present application. Therefore, the requirement for the number of the movable ends can be met only by single-pole double-throw.

For another example, as shown in fig. 4, when the communication device needs to add two auxiliary antennas DRX MIMO and PRX MIMO in the third band (N3) or the fourth band (N7) in addition to the first band (N1) and the second band (N41), the fourth device 122 and the fifth device 123 may be single pole, three throw (spdt) switching devices. At this time, the fourth device 122 and the fifth device 123 of the single-pole triple-throw are added with two active terminals together. The two active terminals may be respectively used to connect a diversity reception multiple input output pin (N3 or N7 DRX MIMO) of the third frequency band or the fourth frequency band and a main set reception multiple input output pin (N3 or N7 PRX MIMO) of the third frequency band or the fourth frequency band.

The first switch module 11 may specifically be composed of a first device 111 and a combiner 112. The first switch module 11 can be connected to the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band), the middle frequency band main set transmitting and receiving common pin (CA _ MB _ B41 or DC _ MB _ N41), and the first frequency band, second frequency band and other middle and high frequency band diversity receiving pins (DRX N1/N41& DRX other MH band) among the plurality of radio frequency signals.

The first device 111 includes at least two sixth fixed terminals and at least three sixth movable terminals. All the sixth fixed ends of the first device 111 are all the first fixed ends of the first switch module 11. The first and sixth fixed terminals of the first device 111 are connected to the first antenna terminal. The second sixth fixed end of the first device 111 is connected to the second antenna end. The first sixth active end of the first device 111 is connected to the first frequency band and the other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band). The third sixth active terminal of the first device 111 is connected to the diversity reception pins (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band, and other mid-high frequency bands.

Wherein, the second and sixth active terminals of the first device 111 are connected to the first terminal of the combiner 112. The second terminal of the combiner 112 is connected to a radio frequency signal terminal. The rf signal terminal may be a main set transmit and receive common pin (CA _ MB _ B41 or DC _ MB _ N41) of the if band. It should be noted that, the transmit and receive pin of the main set of if band corresponding to CA _ MB _ B41 or DC _ MB _ N41 is only used for receiving and transmitting the main set of if band (TRX other MH band) in case of CA in the if band and B41 band, or in case of endec (NSA) in the if band and N41 band. In other cases, the main set receive and transmit (TRX other MH band) of the if band goes to the first band and other mid-to-high band main set transmit and receive common pins (TRX N1& TRX other MH band). The third terminal of the combiner 112 is connected to the first and second fixed terminals of the second switch module 12.

In one example, as shown in fig. 3, the first device 111 can be a double pole, four throw switching device.

In another example, as shown in fig. 5, the first device 111 can also be a three-pole, three-throw switch device. Since a three pole, three throw switching device is generally more cost effective than a double pole, four throw switching device. Therefore, the cost of the rf switch circuit 10 can be reduced by using a three-pole three-throw switch device instead of a three-pole four-throw switch device.

In another example, at least two sixth fixed terminals and at least three sixth movable terminals are included in the first device 111. Thus, the first device 111 may be a double pole, triple throw switching device. Since double pole triple throw switching devices are generally more cost effective than double pole four throw switching devices. Therefore, the cost of the rf switch circuit 10 can be reduced by using a double-pole, triple-throw switch device instead of a triple-pole, triple-throw switch device.

In one example, the combiner may be a medium-high frequency combiner (dipolexer).

In this application, the controller may send control information to the first device 111, the second device 112, the third device 121, the fourth device 122, and the fifth device 123, so as to control the radio frequency switch circuit 10, so that the radio frequency switch circuit 10 may implement communication of different paths according to different frequency bands.

Wherein the first antenna end may correspond to DRX MIMO: n41, TRX N1 and TRX other MH band. Therefore, the control signal can control the first and sixth fixed terminals of the first device 111 to connect with the first and sixth active terminals of the first device 111, so as to form a communication path for TRX N1& TRX other MH band signals. That is, the passage 4 communicates with the passage 1. Alternatively, the control signal may also control the first fixed end of the first device 111 to be connected to the second fourth active end of the fourth device 122, so as to form a communication path for the N41 DRX MIMO band signal. That is, channels 4, 3, 5, 10, 9 may form a passageway.

Wherein, the second antenna terminal can correspond to the frequency band signal of DRX N1/N41& DRX other MH band. Therefore, the control signal can control the second sixth fixed terminal of the first device 111 to connect with the fourth sixth active terminal of the first device 111 to form a communication path of DRX N1/N41& DRX other MH band signals. That is, the passage 7 communicates with the passage 6.

Wherein, the third antenna end may correspond to TRX N41& DRX MIMO: a frequency band signal of N1. Therefore, the control signal can control the second third fixed end of the third device 121 to be connected to the third active end of the third device 121, so as to form a communication path for the N41TRX band signal. That is, the passage 12 communicates with the passage 11. Alternatively, the control signal may control the second third fixed end of the third device 121 to be connected to the first fourth active end of the fourth device 122, so as to form a communication path for the N1DRX MIMO band signal. Namely, the passage 12, the passage 10, and the passage 8 communicate.

Wherein the fourth antenna end may correspond to PRX MIMO: N1/N41 frequency band signal. Therefore, the control signal can control the third fixed end of the third device 121 to connect with the first fifth movable end of the fifth device 123, so as to form a communication path for N1PRX MIMO band signals. Namely, the passage 16, the passage 15, and the passage 13 communicate. Alternatively, the control signal may control a third fixed end of the third device 121 to be connected to a second fifth movable end of the fifth device 123, so as to form a communication path for the N41PRX MIMO band signal. Namely, the passage 16, the passage 15, and the passage 14 communicate.

For example, when the communication apparatus needs to perform transceiving of an N41 band signal, the communication apparatus needs to communicate four paths between the first and second fixed ends of the first device 111 and the second and fourth movable ends of the fourth device 122, between the second and sixth fixed ends of the first device 111 and the fourth and sixth movable ends of the first device 111, between the second and third fixed ends of the third device 121 and the third and third movable ends of the third device 121, and between the third and third fixed ends of the third device 121 and the second and fifth movable ends of the fifth device 123. The communication of the four paths enables the four antennas to receive and transmit the N41 band signals after acquiring different types of N41 band signals.

As another example, when the communication device needs to perform transceiving of signals in both N41 and N3 bands, the N3 band belongs to the other MH band. Since the transmission and reception of signals of multiple frequency bands are included, the transmission and reception of the main set of signals of the N3 frequency band are realized through the common pins (TRX N1& TRX other MH band) of the transmission and reception of the main set of other middle and high frequency bands. The N3 frequency band signal realizes the main set receiving and transmitting through the first antenna terminal ANT1. Therefore, the N3 band signal needs to be received and transmitted through the channel 2, the channel 3 and the channel 4.

The diversity reception of the N3 frequency band signal is realized by diversity reception pins (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band and other middle and high frequency bands. The N3 frequency band signal realizes diversity reception and transmission through the second antenna terminal ANT5. Therefore, the N3 band signal needs to be received through the channels 6 and 7 in diversity. For the N41 signal, it is necessary to maintain the communication of the four paths between the first and second fixed ends of the first device 111 and the second and fourth movable ends of the fourth device 122, the second and sixth fixed ends of the first device 111 and the fourth and sixth movable ends of the first device 111, the second and third fixed ends of the third device 121 and the third and third movable ends of the third device 121, and the third and third fixed ends of the third device 121 and the second and fifth movable ends of the fifth device 123.

The first antenna terminal ANT1 needs to simultaneously realize the main set receiving and transmitting of the N3 frequency band signal and the diversity receiving multiple input and output of the N41 frequency band signal. And the main set receiving and transmitting of the N3 frequency band signal and the diversity receiving multi-input and multi-output of the N41 frequency band signal belong to different pins respectively. Therefore, in order to ensure the validity of the first device 111, the paths for the main set reception and transmission of the N3 band signals and the diversity reception multiple-input-multiple-output of the N41 band signals need to be combined into one channel before reaching the first device 111 to ensure the validity of the first device 111. Thus, the third device 121 is connected to the combiner 112.

In the radio frequency switch circuit provided by the application, the second switch module includes a third device, a fourth device and a fifth device. The first switch module comprises a first device and a combiner. And the first and third fixed ends of the third device are connected with the third end of the combiner. The second third fixed end and the third fixed end of the third device are respectively connected with an antenna end. The first and third movable ends of the third device are connected with a fourth fixed end of the fourth device. The third movable end of the third device is connected with a fifth fixed end of the fifth device. The second third active terminal of the third device is connected to the transmit and receive pin (N41 TRX) of the main set of the second frequency band. The first and the fourth active terminals of the fourth device are connected with a diversity reception multiple input and output pin (N1 DRX MIMO) of the first frequency band. The second and fourth active terminals of the fourth device are connected to the diversity reception multiple input and output pin (N41 DRX MIMO) of the second frequency band. The first and fifth active ends of the fifth device are connected with a primary set receiving multiple input and output pin (N1 PRX MIMO) of the first frequency band. The second fifth active end of the fifth device is connected with a main set receiving multi-input and output pin (N41 PRX MIMO) of the second frequency band. Two sixth fixed ends of the first device are respectively connected with the two antenna ends. The first sixth active end of the first device is connected with the first frequency band and other main set transmitting and receiving shared pins (TRX N1& TRX other MH band) of the middle and high frequency bands. The third sixth active end of the first device is connected with the diversity reception pins (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band and other middle and high frequency bands. And the second and sixth active ends of the first device are connected with the first end of the combiner. The second end of the combiner is connected with a main set transmitting and receiving common pin (CA _ MB _ B41 or DC _ MB _ N41) of the intermediate frequency band. The third end of the combiner is connected with the first and third fixed ends of the third device. In the application, the circuit realizes single-frequency-band operation of the first frequency band (N1) and the second frequency band (N41) and auxiliary antenna operation function of 4X4 MIMO. In addition, in the present application, the above circuit may also achieve an effect that the TX round robin signal in the second frequency band (N41) may reach the antenna ANT1, the antenna ANT5, the antenna ANT4, and the antenna ANT8, respectively, after passing through the device 3, thereby implementing the SRS function. Wherein, the TX round-robin signal of the second frequency band (N41) may pass through the channel 11, the device 3, the channel 5, the device 2, the channel 3, and the channel 4 to reach the antenna ANT1. The TX round-robin signal of the second frequency band (N41) may pass through the channel 11, the device 3, the channel 5, the device 2, the channel 3, and the channel 7 to reach the antenna ANT5. The TX round-robin signal of the second frequency band (N41) may reach the antenna ANT4 via the channel 11, the device 3 and the channel 12. The TX round-robin signal of the second frequency band (N41) may pass through the channel 11, the device 3, and the channel 16 to the antenna ANT8.

Fig. 6 shows a flowchart of a control method of a radio frequency switch circuit according to an embodiment of the present application. The radio frequency switch circuit as shown in fig. 2 to 5 may be provided in a communication device. A controller may be provided in the communication device. The controller may be connected to each switching device in the radio frequency switching circuit. As shown in fig. 6, with the controller of the communication device as the execution main body, the method of this embodiment may include the following steps:

s101, according to a target frequency band, determining a target antenna end, a target radio frequency signal end and a communication path between the target radio frequency signal end and the target antenna end.

In this embodiment, the controller may determine at least one target frequency band according to a communication requirement of the communication device. For example, the target frequency band may be N1, N41, N3, N7, etc. The controller can determine a target antenna end, a target radio frequency signal end and a communication path between the target radio frequency signal end and the target antenna end corresponding to the target frequency band according to the target frequency band.

In one example, the specific steps may include:

step 1, each signal end of the radio frequency switch circuit can correspond to at least one signal frequency band. Therefore, after the target frequency band is determined, the controller may determine a plurality of target rf signal terminals corresponding to the target frequency band according to the target frequency band. For example, in the rf switch circuit shown in fig. 3, the N1 band signal may correspond to 4 target rf signal terminals corresponding to channel 1, channel 6, channel 8, and channel 13. As another example, other mid-high frequency band signals such as N3 may correspond to three target rf signal terminals of channel 1, channel 2, and channel 6. When the controller only acquires one target frequency band which belongs to other middle and high frequency band signals, the corresponding target radio frequency signal end is a channel 1 and a channel 6. When the controller only acquires a plurality of target frequency bands and at least one target frequency band in the plurality of target frequency bands belongs to other signals of medium and high frequency bands, the corresponding target radio frequency signal end is a channel 2 channel 6. The controller can also determine a corresponding target antenna end according to the target frequency band. For example, in the radio frequency switch circuit shown in fig. 3, the N1 band signal may correspond to four antenna terminals ANT1, ANT5, ANT4, ANT8. As another example, other mid-high band signals such as N3 may correspond to two antenna terminals ANT1 and ANT5.

Step 2, each frequency band signal can be divided into a plurality of signal types. For example, the N1 band signals may include four classes of DRX MIMO, DRX, TRX, PRX MIMO. For another example, other mid-high band signals such as N3 may include both DRX and TRX. Different signal types of a frequency band signal need to correspond to different radio frequency signal terminals and different antenna terminals. Therefore, the controller can determine the communication path between each target radio frequency signal end and the target antenna end according to the signal type of each target antenna end and the signal type of each target radio frequency signal end. For example, as shown in fig. 3, the N1 band signal may include four communication paths. The four communication paths are respectively: channel 1, first device, channel 4; channel 6, first device, channel 7; channel 8, fourth device, channel 10, third device, channel 12; channel 13, fifth device, channel 15, third device, channel 16.

In one implementation, the first antenna end is a main set transmission and reception shared antenna (TRX N1& TRX other band) of the first frequency band and the third frequency band, and a diversity reception multiple input and output antenna (DRX mimo N41) of the second frequency band. The second antenna end is a diversity receiving antenna (DRX n1/n41& DRX other band) of the first frequency band, the second frequency band and the third frequency band. The third antenna end is a main set transmitting and receiving shared antenna (TRX N41) of the second frequency band and a diversity receiving multiple input and output antenna (DRX MIMO N1) of the first frequency band. The fourth antenna end is a main set receiving multiple input and output antenna (PRX MIMO N1 and N41) of the first frequency band and the second frequency band. For example, when the target frequency band is the first frequency band (N), the target rf signal end includes a diversity reception multiple input output pin (N1 DRX MIMO) of the first frequency band, a primary set reception multiple input output pin (N1 PRX MIMO) of the first frequency band, a multi-band primary set transmission and reception common pin (TRX N1& TRX other band) of the first frequency band and the third frequency band, and a multi-band diversity reception pin (DRX N1N 41& DRX other band) of the first frequency band, the second frequency band, and the third frequency band.

Then, in step 2, the specific process of determining the communication path between each target rf signal end and the target antenna end according to the signal type of each target antenna end and the signal type of each target rf signal end may include:

the controller may determine that a communication path is formed between the first antenna terminal and a multi-band primary set transmit and receive common pin (TRX n1& TRX other band) of the first and third frequency bands. And a communication path is formed between the second antenna end and a multi-band diversity receiving pin (DRX n1 n41& DRX other band). And a communication path is formed between the third antenna end and a diversity reception multiple input and output pin (N1 DRX MIMO) of the first frequency band. And a communication path is formed between the fourth antenna end and a main set receiving multi-input and multi-output pin (N1 PRX MIMO) of the first frequency band.

S102, generating a control signal according to a communication path between a target radio-frequency signal end and a target antenna end, and controlling the communication between a plurality of first fixed ends and a plurality of first movable ends in a first switch module and the communication between a plurality of second fixed ends and a plurality of second movable ends in a second switch module by using the control signal so as to enable the target antenna end and the target radio-frequency signal end to be communicated.

In this embodiment, after determining the communication paths between the target rf signal terminal and the target antenna terminal, the controller may determine the control signal of the rf control circuit according to the communication paths. The control signal is used for controlling the communication between the plurality of first fixed ends and the plurality of first movable ends in the first switch module and controlling the communication between the plurality of second fixed ends and the plurality of second movable ends in the second switch module. And when the fixed end and the movable end in the first switch module and the second switch module are communicated, the target antenna end is communicated with the target radio frequency signal end.

In one example, the specific steps of controlling the signal may include:

step 1, the communication path between the target rf signal end and the target antenna end may include multiple paths. The controller may determine from each communication path its corresponding set of switching parameters. The switching parameters of each switching device on the communication path can be included in each switching parameter set. For example, in the communication path formed by the channel 1, the first device and the channel 4, the switching parameter of the first device may be included in the switching parameter set. As another example, in the communication path formed by the channel 8, the fourth device, the channel 10, the third device, and the channel 12, the switching parameters of the fourth device and the third device may be included in the switching parameter set. The switching parameter may be determined according to the two channels that the switching device needs to communicate. For example, for the first device, when it is desired to communicate channel 1 and channel 4, the switching parameter may be 11. Alternatively, when it is desired to communicate between channel 1 and channel 7, the switching parameter may be 12. Alternatively, when it is desired to communicate between channel 6 and channel 7, the switching parameter may be 42.

And 2, each switching parameter set can comprise the switching parameters of at least one switching device. Due to the small number of switching devices in the radio frequency switching circuit. Therefore, in the plurality of parameter sets, a plurality of switching parameters of one switching device may be included. For example, the switching parameter set corresponding to the communication path composed of the channel 1, the first device, and the channel 4 includes the switching parameter of the first device. The switching parameter set corresponding to the communication path composed of the channel 6, the first device and the channel 7 also includes the switching parameter of the first device. The controller can determine at least one switching parameter corresponding to each switching device in the video switching circuit according to the switching parameter set corresponding to each communication path. For example, in the above example, the first device may include two switching parameters. The controller may generate a control signal for each switching device according to at least one switching parameter corresponding to each switching device. For example, for a first device, the two switching parameters may be 11 and 42, respectively, and the control may generate a control signal for the first device according to the two switching parameters. When the controller uses the control signal to control the first device, channel 1 of the first device is in communication with channel 4 and channel 6 is in communication with channel 7.

When the controller completes the generation of the control signal, the controller may send the control signal to each switching device of the rf switching circuit. The switch device can control the fixed end to be connected with the movable end according to the control signal. For example, when the switching device is a first switching module, the control signal may connect each first fixed terminal to one first movable terminal, so that the first fixed terminals communicate with the channels at two ends of the first movable terminal. At this time, the control signal may also control the second switch module to connect each second fixed end to one second movable end, so that the second fixed ends are communicated with the channels at the two ends of the second movable end. Finally, the fixed ends and the movable ends of the first switch module and the second switch module are connected, so that the target antenna end and the target radio frequency signal end are communicated.

According to the control method of the radio frequency switch circuit, the controller can determine at least one target frequency band according to the communication requirement of the communication equipment. The controller can determine a target antenna end, a target radio frequency signal end and a communication path between the target radio frequency signal end and the target antenna end corresponding to the target frequency band according to the target frequency band. The controller may use the control signal to control communication between the plurality of first fixed terminals and the plurality of first movable terminals in the first switch module and to control communication between the plurality of second fixed terminals and the plurality of second movable terminals in the second switch module to communicate the target antenna terminal and the target rf signal terminal. In the application, single-frequency-band work of a plurality of frequency bands, an auxiliary antenna work function of 4X4MIMO and an SRS function are realized by controlling the switching device.

Fig. 7 is a flowchart illustrating a control method for an rf switch circuit according to an embodiment of the present application. On the basis of the embodiment shown in fig. 6, TRX corresponds to signal transmission and main set signal reception. DRX corresponds to diversity signal reception. In a communication device, the main set antenna and the diversity antenna are typically located at both ends of the communication device. Therefore, in order to avoid the signal degradation of the communication device when the user holds one end of the communication device, as shown in fig. 7, the controller may implement the ASDIV function by switching between the main set and the diversity set using the following method, thereby improving the communication efficiency. With the controller of the communication device as an execution subject, the method of this embodiment may include the following steps:

s201, determining that the signal intensity in a communication path between the first frequency band and other middle and high frequency band main set transmitting and receiving signals of the first antenna end and the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band) is smaller than a preset threshold value. Or, the signal intensity in the communication path between the main set sending and receiving signal of the second frequency band at the third antenna end and the main set sending and receiving shared pin (N41 TRX) of the second frequency band is determined to be less than a preset threshold value.

In this embodiment, the controller may obtain, according to the target frequency band, the signal strength of the communication path from the antenna end corresponding to the target frequency band to the main set transmitting and receiving common pin. For example, when the frequency band signal is the first frequency band (N1) or other mid-high frequency bands, the controller may obtain the signal strength in the communication path between the first antenna end and the first frequency band and other mid-high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band). For another example, when the frequency band signal is the second frequency band (N41), the controller may obtain the signal strength in the communication path between the third antenna terminal and the main set transmission and reception common pin (N41 TRX) of the second frequency band.

The controller may compare the signal strength to a preset threshold. The preset threshold may be based on a target frequency band. Typically each frequency band may correspond to a standard signal strength. The preset threshold may be a result of subtracting a preset difference from the standard signal strength. The predetermined difference value is typically between 3dBm and 5 dBm. When the signal strength is less than the predetermined threshold, the controller may continue to perform step 202.

Otherwise, the controller may continue to acquire the target frequency band to obtain the signal strength of the common pins for transmitting and receiving the main set corresponding to the antenna end, and compare the signal strength with the preset threshold.

S202, enabling the first frequency band and other middle and high frequency band main set transmitting and receiving signals of the first antenna end to be communicated with the first frequency band, the second frequency band and other middle and high frequency band diversity receiving pins (DRX N1/N41& DRX other MH band), and enabling the first frequency band, the second frequency band and other middle and high frequency band diversity receiving signals of the second antenna end to be communicated with the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band). Alternatively, a main set transmission signal of a main set transmission and reception common pin (N41 TRX) of the second frequency band is connected to the fourth antenna terminal.

In this embodiment, when it is determined that the signal strength is smaller than the preset threshold, it indicates that the common pins for transmitting and receiving the main set corresponding to the target frequency band of the communication device may be blocked. In order to avoid the problem of signal strength reduction caused by shielding, the controller can change the connection relationship between the main set transmitting and receiving common pin and the antenna end. For example, in the case where pin a is originally connected to antenna a and pin B is originally connected to antenna B, pin a may be connected to antenna B while pin B is connected to antenna a. In the communication device, the main set transmit and receive common pin may instead be connected to any other antenna terminal. However, it should be noted that the signal strength drop is usually caused by the shielding of the antenna end corresponding to the main set transmitting and receiving common pin. Therefore, in order to increase the signal strength, it is usually necessary to select the antenna end that is not blocked. For example, when the upper end of the communication device is occluded by being held by hand, the antenna end at the lower end of the communication device needs to be selected to be suspected to better avoid the occlusion. In the layout process of the communication device, the positions of the antenna ends are usually fixed, and therefore, in this embodiment, the interchangeable antenna ends and pins are also usually fixed.

When the target frequency band is the first frequency band (N1) or other middle and high frequency bands, the controller may communicate the first antenna end with diversity reception pins (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band, and other middle and high frequency bands. And the controller can make the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band) communicate with the second antenna end. The first antenna end and the second antenna end are positioned on two sides of the communication device.

When the target frequency band is the second frequency band (N41), the controller only needs to switch the main set transmission signal (TX) of the second frequency band to the fourth antenna. And the third antenna end and the fourth antenna end are positioned on two sides of the communication device. And the second antenna end and the third antenna end are located on the same side of the communication device.

For example, as shown in fig. 3, when the target frequency band is the first frequency band (N1), the controller may control the first device to connect the channel 1 to the channel 7 and connect the channel 6 to the channel 4 to implement the ASDIV function. Alternatively, when the target frequency band is the second frequency band (N41), the controller may control the third device to connect the channel 11 to the channel 16 at the same time as the channel 12. The TX signal in the second frequency band (N41) is switched to the fourth antenna end through the channel 11, the third device, and the channel 16.

It should be noted that, for FDD frequency bands such as N1, B2, B3, B4, B7, etc., the FDD frequency bands include two antennas corresponding to the TRX signal and the DRX signal. Therefore, for the FDD frequency band, when the TRX signal strength is poor, the ASDIV function can be realized only by switching the antenna corresponding to the TRX signal and the antenna corresponding to the DRX signal. The switching mode is similar to the switching of the pins corresponding to the first antenna end and the second antenna end in the first frequency band (N1). For TDD bands such as B34, B38, B39, B41, N41, etc., it is similar to the second band (N41). The controller need only switch the TX signals of these TDD bands from being connected to the first antenna terminal (ANT 1) to the second antenna terminal (ANT 5).

According to the control method of the radio frequency switch circuit, when the controller determines that the signal intensity in the communication path between the first antenna end and the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band) is smaller than the preset threshold value, the controller can enable the first antenna end to be communicated with the first frequency band, the second frequency band and other middle and high frequency band diversity receiving pins (DRX N1/N41& DRX other MH band), and enable the second antenna end to be communicated with the first frequency band and other middle and high frequency band main set transmitting and receiving common pins (TRX N1& TRX other MH band). When the signal intensity in the communication path between the third antenna terminal and the main set transmission and reception common pin (N41 TRX) of the second frequency band is less than the preset threshold, the controller may connect the main set transmission signal of the main set transmission and reception common pin (N41 TRX) of the second frequency band to the fourth antenna terminal. In this application, through the switching to the communicating path between antenna end and the pin, realize the ASDIV function. Wherein, for the second frequency band (N41), the ASDIV function is implemented by switching the dominant set transmit and receive signals of the second frequency band from the antenna ANT4 to the ANT8. That is, the path of the N41 TX signal of the second frequency band (N41) is switched from the lane 11, the device 3, the lane 12, and the ANT4 to the lane 11, the device 3, the lane 16, and the ANT8. And for signals of other frequency bands except for the second frequency band (N41), the ASDIV function is implemented by switching the master transmission and reception signals from the antenna ANT1 to the antenna ANT5. Meanwhile, diversity reception signals of other frequency bands are switched from the ANT1 to the antenna ANT5. That is, the paths corresponding to the TRX N1& TRX other MH band signals are switched from lane 1, device 1, lane 4, and ANT1 to lane 1, device 1, lane 7, and ANT5. The DRX N1& DRX other MH band signal switches from channel 6, device 1, channel 7, and ANT5 to channel 6, device 1, channel 4, and ANT1.

In summary, the present application realizes the operation of N1 and N41 band signals on a single band, the 4X4MIMO function, the ASDIV function, and the SRS function of N41 band signals. Secondly, in the present application, a Middle Band (MB) signal and a MB frequency band signal under the CA between B41 bands may enter the combiner through the channel 2, enter the first device through the channel 3, and finally reach the antenna ANT1. This signal implements CA _ MB _ B41. At the same time, the signal also implements the ASDIV function. The TRX signal and the DRX signal of the MB frequency band signal may implement switching between the antenna ANT1 and the antenna ANT5 by the first device. Thirdly, the application realizes the NSA function of the DC _ MB _ N41. Also, the N41 band signals may support SRS, 4X4MIMO functionality. The MB and N41 band signals may support the ASDIV function. Fourthly, when B3/N3 or B7/N7 is required to support MIMO, the SPDT switches of the fourth device and the fifth device can be replaced by SP3T switches, so that the B3/N3 or B7/N7 MIMO function is realized. Fifthly, the first device can be replaced by 3P3T according to market cost quotations, so that the effect of reducing the cost is achieved. It should be noted that in the case where the if band and the B41 band are in CA, or the if band and the N41 band are in endec (NSA), the MB signal does not include the B1, N1 band signal.

Fig. 8 shows a hardware structure diagram of a communication device according to an embodiment of the present application. As shown in fig. 8, the communication device 30 is configured to implement the operation corresponding to the communication device in any of the above method embodiments, and the communication device 30 of this embodiment may include: a controller 20 and a radio frequency switching circuit 10 as shown in any one of the embodiments of fig. 2 to 5. When the controller 20 executes the control method of the radio frequency switch circuit shown in the embodiment of fig. 6 or fig. 7, the communication device can implement 5G communication of the target frequency band. The specific implementation manner and technical effect of the communication device provided in this embodiment are similar to those of the above embodiments, and details are not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: it is also possible to modify the solutions described in the previous embodiments or to substitute some or all of the technical features. And these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A radio frequency switching circuit, for use in a communication device, the circuit comprising: the antenna comprises a first switch module, a second switch module, a plurality of antenna ends and a plurality of radio frequency signal ends; the plurality of antenna ends are marked as a first antenna end, a second antenna end, a third antenna end and a fourth antenna end;

the first switch module comprises at least two first fixed ends and a plurality of first movable ends, wherein the first fixed end is connected with the first antenna end, and the second fixed end is connected with the second antenna end; one first movable end is connected with the second fixed end of the second switch module, and the rest first movable ends are connected with a part of radio frequency signal ends;

the second switch module comprises at least three second fixed ends and a plurality of second movable ends, the second fixed end is connected with the third antenna end, and the third fixed end is connected with the fourth antenna end; the plurality of second movable ends are connected with the other part of the radio frequency signal ends;

and controlling the first fixed ends of the first switch modules to be communicated with the first movable ends respectively, and controlling the second fixed ends of the second switch modules to be communicated with the second movable ends respectively, so that the receiving signals of the antenna ends are transmitted to the corresponding radio-frequency signal ends.

2. The circuit according to claim 1, wherein the plurality of radio frequency signal terminals at least include a diversity reception multiple input and output pin (N1 DRX MIMO) of a first band, a diversity reception multiple input and output pin (N41 DRX MIMO) of a second band, a main set transmission and reception common pin (N41 TRX) of the second band, a main set reception multiple input and output pin (N1 PRX MIMO) of the first band, and a main set reception multiple input and output pin (N41 PRX MIMO) of the second band, and the second switch module specifically comprises: a third device, a fourth device, and a fifth device;

a first fixed end of the third device is connected with a first movable end of the first switch module, a second fixed end of the third device is connected with the third antenna end, and a third fixed end of the third device is connected with the fourth antenna end;

the second third active end of the third device is connected with the main set sending and receiving shared pin (N41 TRX) of the second frequency band, the first fourth active end of the fourth device is connected with the diversity receiving multiple input and output pin (N1 DRX MIMO) of the first frequency band, the second fourth active end of the fourth device is connected with the diversity receiving multiple input and output pin (N41 DRX MIMO) of the second frequency band, the first fifth active end of the fifth device is connected with the main set receiving multiple input and output pin (N1 PRX MIMO) of the first frequency band, and the second fifth active end of the fifth device is connected with the main set receiving multiple input and output pin (N41 PRX MIMO) of the second frequency band.

3. The circuit of claim 2, wherein the third device is a three-pole, three-throw switching device; the fourth device and the fifth device are single pole double throw switching devices.

4. The circuit according to any of claims 1-3, wherein the plurality of radio frequency signal terminals comprise at least a first band and other mid-high band main set transmission and reception common pin (TRX N1& TRX other MH band), a mid-frequency band main set transmission and reception common pin (CA _ MB _ B41 or DC _ MB _ N41), and first, second, and other mid-high band diversity reception pins (DRX N1/N41& DRX other MH band), and the first switch module specifically comprises: a first device and an interposer;

a first sixth active end of the first device is connected to a common transmission and reception pin (TRX N1& TRX other MH band) of a main set of the first frequency band and other mid-high frequency bands, and a third sixth active end of the first device is connected to a diversity reception pin (DRX N1/N41& DRX other MH band) of the first frequency band, the second frequency band and other mid-high frequency bands;

the second and sixth movable ends of the first device are connected with the first end of the combiner, and the second end of the combiner is connected with the radio-frequency signal end; and the third end of the combiner is connected with the first and second fixed ends of the second switch module.

5. A method for controlling a radio frequency switch circuit, the method comprising:

according to a target frequency band, determining a target antenna end, a target radio frequency signal end and a communication path between the target radio frequency signal end and the target antenna end;

and generating a control signal according to a communication path between the target radio frequency signal end and the target antenna end, and using the control signal to control the communication between the plurality of first fixed ends and the plurality of first movable ends in the first switch module and the communication between the plurality of second fixed ends and the plurality of second movable ends in the second switch module so as to enable the target antenna end to be communicated with the target radio frequency signal end.

6. The method according to claim 5, wherein the determining a target antenna end, a target rf signal end, and a communication path between the target rf signal end and the target antenna end according to a target frequency band specifically includes:

7. The method of claim 6, wherein the first antenna end is a main set transmitting and receiving common antenna (TRX N1& TRX other band) of the first frequency band and the third frequency band, and a diversity receiving multiple input output antenna (DRX mimo N41) of the second frequency band; the second antenna end is a diversity receiving antenna (DRX n1/n41& DRX other band) of the first frequency band, the second frequency band and the third frequency band; the third antenna end is a main set transmitting and receiving shared antenna (TRX N41) of the second frequency band and a diversity receiving multi-input and output antenna (DRX MIMO N1) of the first frequency band; the fourth antenna end is a primary set receiving multi-input and output antenna (PRX MIMO N1/N41) of the first frequency band and the second frequency band;

when the target frequency band is the first frequency band, the target radio frequency signal end comprises a diversity reception multi-input-output pin (N1 DRX MIMO) of the first frequency band, a master set reception multi-input-output pin (N1 PRX MIMO) of the first frequency band, multi-band master set transmission and reception common pins (TRX N1& TRX other band) of the first frequency band and the third frequency band, and multi-band diversity reception pins (DRX N1N 41& DRX other band) of the first frequency band, the second frequency band and the third frequency band;

correspondingly, the determining a communication path between each target rf signal end and the target antenna end according to the signal type of each target antenna end and the signal type of each target rf signal end specifically includes:

determining a communication path between the first antenna end and the multi-band primary set transmit and receive common pins (TRX N1& TRX other band) of the first band and the third band, a communication path between the second antenna end and the multi-band diversity receive pins (DRX N1N 41& DRX other band), a communication path between the third antenna end and the diversity receive multiple input and output pin (N1 DRX MIMO) of the first band, and a communication path between the fourth antenna end and the primary set receive multiple input and output pin (N1 PRX MIMO) of the first band.

8. The method according to claim 5, wherein the generating a control signal according to the communication path between the target rf signal terminal and the target antenna terminal specifically includes:

according to the communication paths between the target radio frequency signal end and the target antenna end, determining a switch parameter set corresponding to each communication path;

9. The method according to any one of claims 5-8, further comprising:

or, when the signal intensity in the communication path between the main set transmitting and receiving signal of the second frequency band of the third antenna terminal and the main set transmitting and receiving shared pin (N41 TRX) of the second frequency band is determined to be less than the preset threshold value, the main set transmitting signal of the main set transmitting and receiving shared pin (N41 TRX) of the second frequency band is connected to the fourth antenna terminal.

10. A communication device, wherein a controller and the radio frequency switch circuit according to any one of claims 1 to 4 are provided in the communication device, and when the controller executes the control method of the radio frequency switch circuit according to any one of claims 5 to 9, the communication device implements 5G communication of a target frequency band.