CN113437993B

CN113437993B - Radio frequency circuit and control method

Info

Publication number: CN113437993B
Application number: CN202110512135.6A
Authority: CN
Inventors: 冯莉; 江成
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2023-08-08
Anticipated expiration: 2041-05-11
Also published as: CN113437993A; WO2022237250A1

Abstract

The embodiment of the application provides a radio frequency circuit and a control method. The circuit comprises a radio frequency transceiver, a controller, a switch unit and first to fifth antennas. The radio frequency transceiver comprises a first port to a fifth port for transmitting and receiving a first signal, receiving a second signal and the first signal, transmitting and receiving the second signal, receiving the second signal and receiving the second signal; the switch unit comprises sixth to fifteenth ports connected with the first to fifth ports and the first to fifth antennas; the controller is used for controlling the port connection of the switch unit, so that one of the first antenna and the second antenna is used for transmitting and receiving the first signal, and the other is used for receiving the first signal and the second signal; any one of the third antenna to the fifth antenna is used for transmitting the second signal, and is used for receiving the second signal. SA and NSA functions are realized through antenna multiplexing and port switching. The number of antennas is reduced, the occupied space is reduced, and the volume of the terminal is reduced.

Description

Radio frequency circuit and control method

Technical Field

The application relates to the technical field of terminals, in particular to a radio frequency circuit and a control method.

Background

Currently, the fifth generation mobile communication technology (5 th-generation, 5G) network can use two networking modes for communication. The two networking modes are non-independent Networking (NSA) and independent networking (SA). Specifically, when the dual mode 5G handset supports both NSA and SA modes, the dual mode 5G handset may implement communications in a variety of ways. The communication mode comprises the following steps: 5G new air interface (NR) communications, long term evolution (long term evolution, LTE) communications, and dual connectivity (EUTRA-NR dual connectivity, ENDC) communications of LTE and NR. In the NR frequency band, the dual mode 5G mobile phone also needs to support sounding reference signal (sounding reference signal, SRS) antenna of 1 transmit and 4 receive (1T 4R) of NR to transmit alternately.

In the existing design, when NR requires 4*4 multiple-input multiple-output (MIMO) communication and LTE requires 2×2mimo, 6 antennas are included in the dual-mode 5G handset.

However, the dual mode 5G mobile phone has a large number of antennas and occupies a large space.

Disclosure of Invention

The embodiment of the application provides a radio frequency circuit and a control method. And the antennas are shared, and the LTE signal and the NR signal are simultaneously received on one antenna, so that the number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. And the radio frequency circuit realizes the switching of the transmitting antenna of the LTE signal or the transmitting antenna of the NR signal by changing the connection of ports in the switch unit, thereby realizing the SA and NSA dual-mode function.

In a first aspect, embodiments of the present application provide a radio frequency circuit. The radio frequency circuit comprises a radio frequency transceiver, a controller, a switch unit, a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the radio frequency transceiver comprises a first port, a second port, a third port, a fourth port and a fifth port, wherein the first port is used for transmitting and receiving a first signal, the second port is used for receiving a second signal and the first signal, the third port is used for transmitting and receiving the second signal, and the fourth port and the fifth port are used for receiving the second signal.

The switch unit includes a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, and a fifteenth port; the first port, the second port, the third port, the fourth port and the fifth port are respectively connected with the sixth port, the seventh port, the eighth port, the ninth port and the tenth port; the eleventh port, twelfth port, thirteenth port, fourteenth port, and fifteenth port are connected to the first antenna, the second antenna, the third antenna, the fourth antenna, and the fifth antenna, respectively.

The first antenna is used for transmitting and receiving a first signal, and the second antenna is used for receiving the first signal and a second signal; or the first antenna is used for receiving the first signal and the second signal, and the second antenna is used for transmitting and receiving the first signal; any one of the third antenna, the fourth antenna and the fifth antenna is used for transmitting the second signal, and the third antenna, the fourth antenna and the fifth antenna are all used for receiving the second signal.

The controller is connected with the switch unit; the controller is used for controlling the sixth port and the seventh port to be respectively connected with the eleventh port and the twelfth port or controlling the sixth port and the seventh port to be respectively connected with the twelfth port and the eleventh port when the radio frequency transceiver transmits or receives the first signal.

And/or when the radio frequency transceiver transmits or receives the second signal, controlling the seventh port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the fourteenth port and the fifteenth port respectively, or controlling the seventh port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the fourteenth port and the fifteenth port respectively; the first signal is a Long Term Evolution (LTE) signal, and the second signal is a new air interface (NR) signal.

Thus, the radio frequency circuit can realize LTE communication, NR communication and dual-connection (ENDC) communication of LTE and NR by using 5 antennas, and realize dual-mode functions of SA and NSA. The switching of the antenna can be realized by changing the connection of the ports in the switch unit, so that a proper antenna can be selected to transmit the LTE signal or the NR signal, the quality of the LTE signal or the NR signal is improved, and the throughput rate is improved. The reduction of the number of the antennas can reduce the space occupied by the antennas and reduce the volume of the terminal equipment.

Optionally, the third port is further configured to transmit a sounding reference signal SRS; the controller is further configured to, when the third port transmits SRS and the first antenna is configured to transmit and receive the first signal, control the eighth port to be connected to the twelfth port such that the second antenna is configured to transmit SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS, or controlling the eighth port to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS;

or when the third port transmits SRS and the second antenna is used for transmitting and receiving the first signal, controlling the eighth port to be connected with the eleventh port so that the first antenna is used for transmitting SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; the eighth port is either controlled to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS, or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Thus, by changing the connection of the ports in the switch unit, the coexistence of LTE communication and SRS round trip is realized. When the SRS is transmitted in a round manner, the transmission of LTE signals is not affected, and the condition of interruption of the LTE signals can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals.

Optionally, the switch unit includes a first switch and a second switch, and the first switch and the second switch are three-pole three-throw switches; the first switch includes a sixth port, a seventh port, an eleventh port, a twelfth port, a thirteenth port, and a sixteenth port; the second switch includes an eighth port, a ninth port, a tenth port, a fourteenth port, a fifteenth port, and a seventeenth port; the sixteenth port is connected with the seventeenth port; the first switch and the second switch are both connected with the controller.

The controller is used for controlling the sixth port and the seventh port to be respectively connected with the eleventh port and the twelfth port or controlling the sixth port and the seventh port to be respectively connected with the twelfth port and the eleventh port when the radio frequency transceiver transmits or receives the first signal.

And/or controlling the seventh port, the sixteenth port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the seventeenth port, the fourteenth port and the fifteenth port, respectively, or controlling the seventh port, the sixteenth port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the seventeenth port, the fourteenth port and the fifteenth port, respectively, when the radio frequency transceiver transmits or receives the second signal.

Thus, LTE communication, NR communication, and dual connectivity (ENDC) communication of LTE and NR can be implemented by the peer-to-peer switch with 5 antennas, implementing dual mode functions of SA and NSA.

Optionally, the third port is further configured to transmit SRS; the controller is further configured to control, when the radio frequency transceiver transmits the SRS and the first antenna is used to transmit and receive the first signal, the eighth port and the sixteenth port to be connected to the seventeenth port and the twelfth port, respectively, so that the second antenna is used to transmit the SRS; or controlling the eighth port and the sixteenth port to be connected with the seventeenth port and the thirteenth port, respectively, so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Or when the radio frequency transceiver transmits SRS and the second antenna is used for transmitting and receiving the first signal, controlling the eighth port and the sixteenth port to be connected with the seventeenth port and the eleventh port, respectively, so that the first antenna is used for transmitting SRS; or controlling the eighth port and the sixteenth port to be connected with the seventeenth port and the thirteenth port, respectively, so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, the switch unit includes a third switch, and the third switch is a five-pole five-throw switch; the third switch includes a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, and a fifteenth port; the third switch is connected with the controller.

Optionally, the switch unit includes a fourth switch and a fifth switch, the fourth switch is a double-pole double-throw switch, and the fourth switch is a four-pole four-throw switch; the fourth switch comprises a sixth port, an eleventh port, a twelfth port and an eighteenth port; the fifth switch includes a seventh port, an eighth port, a ninth port, a tenth port, a thirteenth port, a fourteenth port, a fifteenth port, and a nineteenth port; the eighteenth port is connected with the nineteenth port; the fourth switch and the fifth switch are both connected with the controller.

The controller is used for controlling the sixth port, the seventh port and the eighteenth port to be respectively connected with the eleventh port, the nineteenth port and the twelfth port when the radio frequency transceiver transmits or receives the first signal, or controlling the sixth port, the seventh port and the eighteenth port to be respectively connected with the twelfth port, the nineteenth port and the eleventh port.

And/or controlling the seventh port, the eighth port, the ninth port, the tenth port and the eighteenth port to be connected with the nineteenth port, the thirteenth port, the fourteenth port, the fifteenth port and the twelfth port, respectively, or controlling the seventh port, the eighth port, the ninth port, the tenth port and the eighteenth port to be connected with the nineteenth port, the thirteenth port, the fourteenth port, the fifteenth port and the eleventh port, respectively, when the radio frequency transceiver transmits or receives the second signal.

Optionally, the third port is further configured to transmit SRS; the controller is further configured to control, when the radio frequency transceiver transmits the SRS and the first antenna is used to transmit and receive the first signal, the eighth port and the eighteenth port to be connected to the nineteenth port and the twelfth port, respectively, so that the second antenna is used to transmit the SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Or when the radio frequency transceiver transmits the SRS and the second antenna is used for transmitting and receiving the first signal, controlling the eighth port and the eighteenth port to be respectively connected with the nineteenth port and the eleventh port, so that the first antenna is used for transmitting the SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, the switch unit includes a sixth switch, a seventh switch and an eighth switch, where the sixth switch and the seventh switch are two-pole four-throw switches, and the eighth switch is a single-pole double-throw switch; the sixth switch includes a sixth port, a seventh port, an eleventh port, a twelfth port, a twentieth port, and a twenty-first port; the seventh switch includes an eighth port, a ninth port, a thirteenth port, a fourteenth port, a twenty-second port, and a twenty-third port; the eighth switch includes a tenth port, a fifteenth port, and a twenty-fourth port; the twenty-second port and the twenty-fourth port are respectively connected with the twenty-second port and the twenty-fourth port; the sixth switch, the seventh switch and the eighth switch are all connected with the controller.

The controller is used for controlling the sixth port and the seventh port to be respectively connected with the eleventh port and the twelfth port or controlling the sixth port and the seventh port to be respectively connected with the twelfth port and the eleventh port when the radio frequency transceiver transmits or receives the first signal;

and/or controlling the seventh port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the fourteenth port and the fifteenth port, respectively, or controlling the seventh port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the fourteenth port and the fifteenth port, respectively, when the radio frequency transceiver transmits or receives the second signal.

Thus, LTE communication, NR communication, and dual connectivity (ENDC) communication of LTE and NR can be implemented through the unequal switches and 5 antennas, implementing dual mode functions of SA and NSA.

Optionally, the third port is further configured to transmit SRS; the controller is further configured to control, when the radio frequency transceiver transmits the SRS and the first antenna is configured to transmit and receive the first signal, the eighth port and the twentieth port to be connected to the twenty-second port and the twelfth port, respectively, such that the second antenna is configured to transmit the SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port is connected with the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the twenty-fourth port are controlled to be connected to the thirteenth port and the fifteenth port, respectively, so that the fifth antenna is used for transmitting SRS.

Or when the radio frequency transceiver transmits SRS and the second antenna is used for transmitting and receiving the first signal, controlling the eighth port and the twentieth port to be respectively connected with the twenty-second port and the eleventh port so that the first antenna is used for transmitting SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port is connected with the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the twenty-fourth port are controlled to be connected to the thirteenth port and the fifteenth port, respectively, so that the fifth antenna is used for transmitting SRS.

Optionally, the switch unit includes a ninth switch, a tenth switch, an eleventh switch and a twelfth switch, the ninth switch is a double-pole double-throw switch, the tenth switch is a double-pole four-throw switch, and the eleventh switch and the twelfth switch are both single-pole double-throw switches; the ninth switch includes a sixth port, an eleventh port, a twelfth port, and a twenty-fifth port; the tenth switch includes a seventh port, an eighth port, a thirteenth port, a twenty-sixth port, a twenty-seventh port, and a twenty-eighth port; the eleventh switch includes a ninth port, a fourteenth port, and a twenty-ninth port; the twelfth switch includes a tenth port, a fifteenth port, and a thirty-th port; the twenty-fifth port, the twenty-seventh port and the twenty-eighth port are respectively connected with the twenty-sixth port, the twenty-ninth port and the thirty-eighth port; the ninth switch, the tenth switch, the eleventh switch and the twelfth switch are all connected with the controller.

The controller is used for controlling the sixth port, the seventh port and the twenty-fifth port to be respectively connected with the eleventh port, the twenty-sixth port and the twelfth port when the radio frequency transceiver transmits or receives the first signal, or controlling the sixth port, the seventh port and the twenty-fifth port to be respectively connected with the twelfth port, the twenty-sixth port and the eleventh port.

And/or controlling the seventh port, the eighth port, the ninth port, the tenth port and the twenty-fifth port to be connected with the twenty-sixth port, the thirteenth port, the fourteenth port, the fifteenth port and the twelfth port, respectively, or controlling the seventh port, the eighth port, the ninth port, the tenth port and the twenty-fifth port to be connected with the twenty-sixth port, the thirteenth port, the fourteenth port, the fifteenth port and the eleventh port, respectively, when the radio frequency transceiver transmits or receives the second signal.

Optionally, the third port is further configured to transmit SRS; the controller is further configured to control, when the radio frequency transceiver transmits the SRS and the first antenna is used to transmit and receive the first signal, the eighth port and the twenty-fifth port to be connected to the twenty-sixth port and the twelfth port, respectively, so that the second antenna is used to transmit the SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port and the twenty-ninth port are connected with the twenty-seventh port and the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the thirty-first port are controlled to be connected to the twenty-eighth port and the fifteenth port, respectively, such that the fifth antenna is used for transmitting SRS.

Or when the radio frequency transceiver transmits the SRS and the second antenna is used for transmitting and receiving the first signal, controlling the eighth port and the twenty-fifth port to be respectively connected with the twenty-sixth port and the eleventh port, so that the first antenna is used for transmitting the SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port and the twenty-ninth port are connected with the twenty-seventh port and the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the thirty-first port are controlled to be connected to the twenty-eighth port and the fifteenth port, respectively, such that the fifth antenna is used for transmitting SRS.

In a second aspect, an embodiment of the present application provides a control method, which is applied to any one of the radio frequency circuits provided in the first aspect.

The control method comprises the following steps: the controller receives first information for indicating to transmit or receive a first signal; the controller controls the sixth port and the seventh port to be connected with the eleventh port and the twelfth port respectively according to the first information, or controls the sixth port and the seventh port to be connected with the twelfth port and the eleventh port respectively.

And/or the controller receives second information for indicating to transmit or receive a second signal; the controller controls the seventh port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the fourteenth port and the fifteenth port respectively, or controls the seventh port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the fourteenth port and the fifteenth port respectively, according to the second information.

Optionally, the controller receives third information for indicating to transmit SRS; the controller controls the eighth port to be connected with the twelfth port according to the third information, so that the second antenna is used for transmitting SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; the eighth port is either controlled to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS, or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Or the controller controls the eighth port to be connected with the eleventh port according to the third information, so that the first antenna is used for transmitting SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; the eighth port is either controlled to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS, or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, when the switching unit includes a first switch and a second switch; the controller controls the sixth port and the seventh port to be connected with the eleventh port and the twelfth port respectively according to the first information, or controls the sixth port and the seventh port to be connected with the twelfth port and the eleventh port respectively.

And/or the controller controls the seventh port, the sixteenth port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the seventeenth port, the fourteenth port and the fifteenth port respectively or controls the seventh port, the sixteenth port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the seventeenth port, the fourteenth port and the fifteenth port respectively according to the second information.

Optionally, the controller controls the eighth port and the sixteenth port to be connected with the seventeenth port and the twelfth port respectively according to the third information, so that the second antenna is used for transmitting the SRS; or controlling the eighth port and the sixteenth port to be connected with the seventeenth port and the thirteenth port, respectively, so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Or, the controller controls the eighth port and the sixteenth port to be connected with the seventeenth port and the eleventh port respectively according to the third information, so that the first antenna is used for transmitting SRS; or controlling the eighth port and the sixteenth port to be connected with the seventeenth port and the thirteenth port, respectively, so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, when the switching unit comprises a third switch; the controller controls the sixth port and the seventh port to be connected with the eleventh port and the twelfth port respectively according to the first information, or controls the sixth port and the seventh port to be connected with the twelfth port and the eleventh port respectively.

And/or the controller controls the seventh port, the eighth port, the ninth port and the tenth port to be connected with the twelfth port, the thirteenth port, the fourteenth port and the fifteenth port respectively or controls the seventh port, the eighth port, the ninth port and the tenth port to be connected with the eleventh port, the thirteenth port, the fourteenth port and the fifteenth port respectively according to the second information.

Optionally, the controller controls the eighth port to be connected with the twelfth port according to the third information, so that the second antenna is used for transmitting the SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; the eighth port is either controlled to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS, or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, when the switching unit includes a fourth switch and a fifth switch; the controller controls the sixth port, the seventh port and the eighteenth port to be connected with the eleventh port, the nineteenth port and the twelfth port, respectively, or controls the sixth port, the seventh port and the eighteenth port to be connected with the twelfth port, the nineteenth port and the eleventh port, respectively, according to the first information.

And/or the controller controls the seventh port, the eighth port, the ninth port, the tenth port and the eighteenth port to be connected with the nineteenth port, the thirteenth port, the fourteenth port, the fifteenth port and the twelfth port respectively, or controls the seventh port, the eighth port, the ninth port, the tenth port and the eighteenth port to be connected with the nineteenth port, the thirteenth port, the fourteenth port, the fifteenth port and the eleventh port respectively according to the second information.

Optionally, the controller controls the eighth port and the eighteenth port to be connected with the nineteenth port and the twelfth port respectively according to the third information, so that the second antenna is used for transmitting the SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Or, the controller controls the eighth port and the eighteenth port to be connected with the nineteenth port and the eleventh port respectively according to the third information, so that the first antenna is used for transmitting SRS; or controlling the eighth port to be connected with the thirteenth port so that the third antenna is used for transmitting SRS; or controlling the eighth port to be connected with the fourteenth port so that the fourth antenna is used for transmitting SRS; or the eighth port is controlled to be connected with the fifteenth port so that the fifth antenna is used for transmitting SRS.

Optionally, when the switching unit includes a sixth switch, a seventh switch, and an eighth switch; the controller controls the sixth port and the seventh port to be connected with the eleventh port and the twelfth port respectively according to the first information, or controls the sixth port and the seventh port to be connected with the twelfth port and the eleventh port respectively.

Optionally, the controller controls the eighth port and the twentieth port to be connected with the twenty-second port and the twelfth port respectively according to the third information, so that the second antenna is used for transmitting the SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port is connected with the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the twenty-fourth port are controlled to be connected to the thirteenth port and the fifteenth port, respectively, so that the fifth antenna is used for transmitting SRS.

Or the controller controls the eighth port and the twentieth port to be connected with the twenty-second port and the eleventh port respectively according to the third information, so that the first antenna is used for transmitting SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port is connected with the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the twenty-fourth port are controlled to be connected to the thirteenth port and the fifteenth port, respectively, so that the fifth antenna is used for transmitting SRS.

Optionally, when the switching unit includes a ninth switch, a tenth switch, an eleventh switch, and a twelfth switch; the controller controls the sixth port, the seventh port and the twenty-fifth port to be connected with the eleventh port, the twenty-sixth port and the twelfth port respectively according to the first information, or controls the sixth port, the seventh port and the twenty-fifth port to be connected with the twelfth port, the twenty-sixth port and the eleventh port respectively.

And/or the controller controls the seventh port, the eighth port, the ninth port, the tenth port and the twenty-fifth port to be connected with the twenty-sixth port, the thirteenth port, the fourteenth port, the fifteenth port and the twelfth port respectively, or controls the seventh port, the eighth port, the ninth port, the tenth port and the twenty-fifth port to be connected with the twenty-sixth port, the thirteenth port, the fourteenth port, the fifteenth port and the eleventh port respectively according to the second information.

Optionally, the controller controls the eighth port and the twenty-fifth port to be connected with the twenty-sixth port and the twelfth port respectively according to the third information, so that the second antenna is used for transmitting the SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port and the twenty-ninth port are connected with the twenty-seventh port and the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the thirty-first port are controlled to be connected to the twenty-eighth port and the fifteenth port, respectively, such that the fifth antenna is used for transmitting SRS.

Or the controller controls the eighth port and the twenty-fifth port to be respectively connected with the twenty-sixth port and the eleventh port according to the third information, so that the first antenna is used for transmitting SRS; or the eighth port is connected with the thirteenth port, so that the third antenna is used for transmitting SRS; or the eighth port and the twenty-ninth port are connected with the twenty-seventh port and the fourteenth port, so that the fourth antenna is used for transmitting SRS; or the eighth port and the thirty-first port are controlled to be connected to the twenty-eighth port and the fifteenth port, respectively, such that the fifth antenna is used for transmitting SRS.

The advantages of the second aspect and the control method provided in each possible design of the second aspect may be referred to the advantages brought by each possible radio frequency circuit of the first aspect and the first aspect, which are not described herein.

In a third aspect, embodiments of the present application provide an electronic device, where the electronic device includes, but is not limited to, a terminal device, which may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on. The terminal device may be a mobile phone, a smart television, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like.

The electronic device comprises any one of the radio frequency circuits provided in the first aspect, wherein the radio frequency circuit is used for transmitting and receiving the first signal and/or the second signal; the first signal is an LTE signal, and the second signal is an NR signal.

The advantages of the third aspect and the terminal device provided in the possible designs of the third aspect may be referred to the advantages brought by the possible radio frequency circuits of the first aspect and the first aspect, and are not described herein again.

Drawings

FIG. 1 is a schematic diagram of a radio frequency circuit in a possible implementation;

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

fig. 3 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 4 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 5 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to an embodiment of the present application;

fig. 6 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to the embodiment of the present application;

fig. 7 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

Fig. 8 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 10 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 11 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 12 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to an embodiment of the present application;

fig. 13 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to an embodiment of the present application;

fig. 14 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 15 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 17 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 18 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 19 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to the embodiment of the present application;

Fig. 20 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to the embodiment of the present application;

fig. 21 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 22 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 23 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 24 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 25 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 26 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to the embodiment of the present application;

fig. 27 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to an embodiment of the present application;

fig. 28 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 29 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 30 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 31 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

Fig. 32 is a schematic diagram of an antenna configuration during LTE communication in a radio frequency circuit according to an embodiment of the present application;

fig. 33 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to the embodiment of the present application;

fig. 34 is a schematic diagram of antenna configuration during SRS transmission in a radio frequency circuit according to an embodiment of the present application;

fig. 35 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application;

fig. 36 is a schematic diagram of an antenna configuration during ENDC communication in a radio frequency circuit according to an embodiment of the present application.

Detailed Description

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. For example, the first device and the second device are merely for distinguishing between different devices, and are not limited in their order of precedence. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

In this application, the terms "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

It should be noted that, the network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

The radio frequency circuit of the embodiment of the application can be applied to electronic equipment with a communication function. The electronic device includes a terminal device, which may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. The terminal device may be a mobile phone, a smart television, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

Currently, 4×4mimo is required for NR communication, and 2×2mimo is required for lte. When the terminal device supports NSA mode and SA mode, the terminal device needs to support LTE communication and NR communication, and dual connectivity (EUTRA-NR dual connectivity, ENDC) communication of LTE and NR. Therefore, 6 antennas are typically included in the terminal device.

By way of example, fig. 1 is a schematic diagram of a radio frequency circuit in a possible implementation. As shown in fig. 1, the radio frequency circuit includes: radio frequency transceiver 101, controller 102, switch one 103, switch two 104, antenna one 105, antenna two 106, antenna three 107, antenna four 108, antenna five 109, and antenna six 110.

The radio frequency transceiver 101 is configured to output LTE signals and/or NR signals, and perform signal processing on LTE signals and/or NR signals received by one or more antennas. Signal processing includes, but is not limited to, frequency conversion, demodulation, analog-to-digital conversion, and the like. The radio frequency transceiver 101 comprises 6 ports, wherein a first port 101A is used for transmitting and receiving LTE signals; the second port 101B is configured to receive LTE signals; the third port 101C is used for transmitting and receiving NR signals; the fourth port 101D is for receiving an NR signal; the fifth port 101E is for receiving an NR signal; the sixth port 101F is for receiving an NR signal.

The controller 102 is configured to control the setting of the first switch 103 and the second switch 104, and further control the first antenna 105 or the second antenna 106 to transmit the LTE signal, and control the third antenna 107, the fourth antenna 108, the fifth antenna 109, or the sixth antenna 110 to transmit the NR signal.

Switch one 103 includes 4 ports. The first port 103A and the second port 103B of the switch one 103 are connected to the first port 101A and the second port 101B of the radio frequency transceiver 101, respectively; the third port 103C and the fourth port 103D of the switch one 103 are connected to the antenna one 105 and the antenna two 106, respectively.

Switch two 104 includes 8 ports. The first port 104A, the second port 104B, the third port 104C and the fourth port 104D of the switch two 104 are connected to the third port 101C, the fourth port 101D, the fifth port 101E and the sixth port 101F of the radio frequency transceiver 101, respectively; the fifth port 104E, sixth port 104F, seventh port 104G, and eighth port 104H of switch two 104 are connected to antenna three 107, antenna four 108, antenna five 109, and antenna six 110, respectively.

The first switch 103 and the second switch 104 are both connected with the controller 102.

Antenna one 105 and antenna two 106 are used to transmit and/or receive LTE signals. Antenna three 107, antenna four 108, antenna five 109, and antenna six 110 are used to transmit and/or receive NR signals.

In a possible implementation one, the frequency ranges supported by the antennas of the first antenna 105 and the second antenna 106 are 824 megahertz (MHz) -2170MHz, and the frequency ranges supported by the antennas of the third antenna 107, the fourth antenna 108, the fifth antenna 109 and the sixth antenna 110 are 2496MHz-2690MHz.

In a second possible implementation, the frequency ranges supported by the antennas of the first antenna 105 and the second antenna 106 are 1710MHz-2690MHz, and the frequency ranges supported by the antennas of the third antenna 107, the fourth antenna 108, the fifth antenna 109 and the sixth antenna 110 are 3300MHz-5000MHz.

In a third possible implementation, the frequency ranges supported by the antennas of the first antenna 105 and the second antenna 106 are 1710MHz-2690MHz, and the frequency ranges supported by the antennas of the third antenna 107, the fourth antenna 108, the fifth antenna 109 and the sixth antenna 110 are 730MHz-803MHz.

The radio frequency circuit can realize LTE communication, NR communication and ENDC communication.

The controller 102 implements LTE communications by controlling the connections between the ports of switch one 103. For example, the controller 102 may control the first port 103A and the second port 103B of the switch one 103 to be connected to the third port 103C and the fourth port 103D of the switch one 103, respectively. Thus, the LTE signal output by the first port 101A of the radio frequency transceiver 101 is transmitted via the switch one 103 at the antenna one 105. LTE signals received by antenna one 105 enter the radio frequency transceiver 101 from the first port 101A of the radio frequency transceiver 101 via switch one 103. LTE signals received by antenna two 106 enter the rf transceiver 101 from the second port 101B of the rf transceiver 101 via switch one 103.

The controller 102 enables NR communication by controlling the connection between the ports of the switch two 104. For example, the controller 102 may control the first port 104A, the second port 104B, the third port 104C, and the fourth port 104D of the switch two 104 to be connected with the fifth port 104E, the sixth port 104F, the seventh port 104G, and the eighth port 104H of the switch two 104, respectively. Thus, the NR signal output by the third port 101C of the RF transceiver 101 is transmitted via switch two 104 on antenna three 107. LTE signals received by antenna three 107 enter the radio frequency transceiver 101 from the third port 101C of the radio frequency transceiver 101 via switch two 104. The LTE signal received by antenna four 108 enters the rf transceiver 101 from the fourth port 101D of the rf transceiver 101 via switch two 104. LTE signals received by antenna five 109 enter the radio frequency transceiver 101 from the fifth port 101E of the radio frequency transceiver 101 via switch two 104. The LTE signal received by antenna six 110 enters the radio frequency transceiver 101 from the sixth port 101F of the radio frequency transceiver 101 via switch two 104.

The switch and the antenna used for LTE communication and NR communication are different, and when the terminal device is in ENDC communication, the LTE signal and the NR signal do not interfere with each other.

However, the radio frequency circuit includes 6 antennas, which are large in number and occupy a large space.

In view of this, the embodiment of the application proposes a radio frequency circuit, which realizes antenna sharing by changing the port connection of the switch, and simultaneously receives LTE signals and NR signals on one antenna, thereby reducing the number of antennas, reducing the space occupied by the antennas, and reducing the volume of the terminal device.

For ease of understanding, the description of the concepts related to the embodiments of the present application is given in part by way of example for reference.

1. LTE signal: refers to signals transmitted according to the LTE-series communication protocol. LTE signals include, but are not limited to: LTE data signals transmitted through an LTE Physical Downlink Shared Channel (PDSCH) or an LTE physical uplink shared channel (PU-SCH), LTE control signals transmitted through an LTE Physical Downlink Control Channel (PDCCH) or an LTE enhanced PDCCH (ePDCCH) or an LTE Physical Uplink Control Channel (PUCCH), and LTE reference signals (e.g., channel state information reference signals (CSI-RS), common Reference Signals (CRS), demodulation reference symbols (demodulationreference symbols, DMRS), primary and secondary synchronization signals, etc.), as well as LTE signals transmitted through an LTE Physical Broadcast Channel (PBCH), an LTE Radio Resource Control (RRC) higher layer protocol, and/or an LTE Medium Access Control (MAC) Control Element (CE).

2. NR signal: refers to signals transmitted according to the NR series communication protocol. NR signals include, but are not limited to: an NR data signal transmitted through an NR PDSCH or an NR PUSCH, an NR control signal transmitted through an NR PDCCH or an NR PUCCHNR, and an NR reference signal, as well as other NR signals transmitted through an NR PBCH, an NR RRC higher layer protocol, and/or an NR MAC control element.

The NR control signal refers to any control signal transmitted according to an NR-series communication protocol. NR control signals include, but are not limited to: RRC signal, MAC Control Element (CE), and Downlink Control Information (DCI); control signals transmitted through the PBCH and Remaining Minimum System Information (RMSI); there are also any other cell-specific, group-specific and/or UE-specific control signals. The RMSI may include specific minimum system information not transmitted in the PBCH. RMSI may be transmitted through PDSCH. PDSCH resources transmitting RMSI may be identified by DCI messages transmitted through a common search space in PDCCH. The DCI message may be CRC scrambled by a common RNTI such as system information RNTI (system information RNTI, SI-RNTI).

3. An antenna: a transducer. The antenna is used for converting radio frequency signals into electromagnetic waves with corresponding wavelengths and radiating the electromagnetic waves into the air, and/or is used for receiving the electromagnetic waves and converting the electromagnetic waves into corresponding radio frequency signals. It will be appreciated that the same antenna may transmit radio frequency signals as well as receive radio frequency signals. The radio frequency signals may include LTE signals, NR signals, and the like.

4. A radio frequency transceiver: for outputting radio frequency signals and for signal processing of radio frequency signals received by the antenna. Signal processing includes, but is not limited to, frequency conversion, demodulation, analog-to-digital conversion, and the like. The radio frequency transceiver may include: frequency-division duplex (FDD), time-division duplex (TDD), switches and/or combiners, etc. Both FDD and TDD are used to separate the transmit and receive signals in the path, reducing interference between the transmit and receive signals. The switch and the combiner can divide one signal into two signals, so that different signals can be conveniently separated and processed subsequently. The processing procedure of the radio frequency signal is not limited and described in the embodiment of the application.

5. And (3) a controller: for controlling the relative setting of the radio frequency signal transmission path and/or the radio frequency signal reception path. The relevant settings include: port selection of a radio frequency transceiver in a radio frequency circuit, setting of a switch unit in the radio frequency circuit, and the like. In this embodiment, the controller is configured to control connection of a plurality of ports in the switch unit.

6. SRS: the method is used for network equipment such as a base station to determine the position, channel quality and the like of the terminal equipment. By way of example, the terminal device reports the status of the 4 antennas to the network device such as the base station by alternately transmitting SRS over the 4 antennas. The network device performs channel estimation according to the SRS from the terminal device.

The technical scheme shown in the application is described in detail below through specific embodiments. It should be noted that, for the same or similar contents, the description is not repeated in different embodiments.

The embodiment of the application can realize antenna sharing through the peer switch and/or the unequal switch. The radio frequency circuitry for implementing antenna sharing by peer-to-peer switching is described below in connection with fig. 2-22.

Fig. 2 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application. As shown in fig. 2, the radio frequency circuit includes: a radio frequency transceiver 201, a controller 202, a first switch 203, a second switch 204, a first antenna 205, a second antenna 206, a third antenna 207, a fourth antenna 208, and a fifth antenna 209.

The radio frequency transceiver 201 is configured to output LTE signals and/or NR signals, and perform signal processing on LTE signals and/or NR signals received by one or more antennas. Signal processing includes, but is not limited to, frequency conversion, demodulation, analog-to-digital conversion, and the like. The radio frequency transceiver 201 comprises 5 ports, wherein a first port 201A is used for transmitting and receiving LTE signals; the second port 201B is used for receiving LTE signals and NR signals; the third port 201C is used for transmitting and receiving NR signals; the fourth port 201D is for receiving an NR signal; the fifth port 201E is for receiving an NR signal. The third port 201C is also used for transmitting a sounding reference signal SRS.

The radio frequency transceiver 201 may include: FDD, TDD, switching and/or combiner, etc.

Note that FDD is used to separate the LTE signal transmitted by the first port 201A of the radio frequency transceiver 201 from the received LTE signal, and/or the NR signal transmitted by the third port 201C from the received NR signal. TDD works the same as FDD, and in a possible implementation, FDD may be replaced by TDD.

The switch is used for dividing one path of received LTE signal and received NR signal of the second port 201B of the radio frequency transceiver 201 into two paths, so as to facilitate the subsequent separation and processing of the received LTE signal and the received NR signal. The switch and the combiner function in the same way, and in a possible implementation manner, the switch can be replaced by the combiner.

The controller 202 is configured to control the settings of the first switch 203 and the second switch 204, so that the first antenna 205, the second antenna 206, the third antenna 207, the fourth antenna 208, and/or the fifth antenna 209 transmit and/or receive radio frequency signals, thereby implementing 2×2mimo of LTE, 4×4mimo of NR, and SRS sounding. The radio frequency signals may include LTE signals, NR signals, and SRS.

In 2 x 2mimo and 4 x 4mimo of NR of LTE, the controller 202 is configured to control the settings of the first switch 203 and the second switch 204 such that the first antenna 205 is configured to transmit and receive LTE signals, the second antenna 206 is configured to receive LTE signals and/or NR signals, any one of the third antenna 207, the fourth antenna 208, and the fifth antenna 209 is configured to transmit NR signals, and the third antenna 207, the fourth antenna 208, and the fifth antenna 209 are configured to receive NR signals; alternatively, the first antenna 205 is configured to receive LTE signals and/or NR signals, the second antenna 206 is configured to transmit and receive LTE signals, any one of the third antenna 207, the fourth antenna 208, and the fifth antenna 209 is configured to transmit NR signals, and the third antenna 207, the fourth antenna 208, and the fifth antenna 209 are configured to receive NR signals.

In the SRS round trip process, the controller 202 is configured to control the setting of the first switch 203 and the second switch 204, and further, when the first antenna 205 is configured to transmit and receive LTE signals, control the second antenna 206, the third antenna 207, the fourth antenna 208, or the fifth antenna 209 to transmit SRS; alternatively, when the second antenna 206 is used to transmit and receive LTE signals, the first antenna 205, the third antenna 206, the fourth antenna 208, or the fifth antenna 209 is controlled to transmit SRS.

It should be noted that, the controller 202 may be a separate device, or may be formed as one device with the rf transceiver 201.

It is understood that the first switch 203 and the second switch 204 may be collectively referred to as a switching unit. The first switch 203 and the second switch 204 are both connected to the controller 202.

The first switch 203 includes 6 ports. The first port 203A and the second port 203B of the first switch 203 are connected to the first port 201A and the second port 201B of the radio frequency transceiver 201, respectively; the third port 203C of the first switch 203 is connected to the fourth port 204D of the second switch 204; the fourth port 203D, the fifth port 203E, and the sixth port 203F of the first switch 203 are connected to the first antenna 205, the second antenna 206, and the third antenna 207, respectively. The first switch 203 is a three pole, three throw switch (3P 3T) or other switch.

The second switch 204 includes 6 ports. The first port 204A, the second port 204B, and the third port 204C of the second switch 204 are connected to the third port 201C, the fourth port 201D, and the fifth port 201E of the radio frequency transceiver 201, respectively; the fourth port 204D of the second switch 204 is connected to the third port 203C of the first switch 203; the fifth port 204E and the sixth port 204F of the second switch 204 are connected to the fourth antenna 208 and the fifth antenna 209, respectively. The second switch 204 is a three pole, three throw switch (3P 3T) or other switch.

The first antenna 205 may be used to transmit and/or receive LTE signals and may also be used to transmit and/or receive NR signals. The second antenna 206 may be used to transmit and/or receive LTE signals and may also be used to transmit and/or receive NR signals. The third antenna 207, the fourth antenna 208 and the fifth antenna 209 are each for transmitting and/or receiving NR signals.

In the embodiment of the present application, the first antenna 205 and the second antenna 206 both support LTE signals and NR signals. The third antenna 207, the fourth antenna 208 and the fifth antenna 209 each support NR signals.

In one possible implementation, the first antenna 205 and the second antenna 206 support frequency bands ranging from 824MHz to 2170MHz and 2496MHz to 2690MHz. The third antenna 207, the fourth antenna 208 and the fifth antenna 209 support a frequency band ranging from 2496MHz to 2690MHz.

In a second possible implementation, the frequency bands supported by the first antenna 205 and the second antenna 206 range from 1710MHz to 2690MHz and from 3300MHz to 5000MHz. The third antenna 207, the fourth antenna 208, and the fifth antenna 209 support a frequency band ranging from 3300MHz to 5000MHz.

In a third possible implementation, the frequency bands supported by the first antenna 205 and the second antenna 206 range from 1710MHz to 2690MHz and from 730MHz to 803MHz. The frequency band supported by the third antenna 207, the fourth antenna 208 and the fifth antenna 209 ranges from 730MHz to 803MHz.

It should be noted that, the types of antennas are numerous, and the radio frequency signals corresponding to different antennas may be the same or different. The embodiments of the present application are not limited in this regard. Thus, the corresponding radio frequency signals can be transmitted on the proper antenna, and the communication quality is improved.

Possible connections of the first switch 203 and the second switch 204 in the radio frequency circuit shown in fig. 2 are described below with reference to fig. 3-8.

When the terminal device performs LTE communication, connection of the first switch 203 and the second switch 204 in the radio frequency circuit may refer to fig. 3 and 4.

Fig. 3 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 3, the first port 203A and the second port 203B of the first switch 203 are connected to the fourth port 203D and the fifth port 203E of the first switch 203, respectively.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the first antenna 205 via the first switch 203. LTE signals received by the first antenna 205 enter the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 via the first switch 203. LTE signals received by the second antenna 206 enter the radio frequency transceiver 201 from the second port 201B of the radio frequency transceiver 201 via the first switch 203.

In this way, the terminal device may implement LTE communication.

Fig. 4 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 4, the first port 203A and the second port 203B of the first switch 203 are connected to the fifth port 203E and the fourth port 203D of the first switch 203, respectively.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the second antenna 206 via the first switch 203. LTE signals received by the second antenna 206 enter the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 via the first switch 203. LTE signals received by the first antenna 205 enter the radio frequency transceiver 201 from the second port 201B of the radio frequency transceiver 201 via the first switch 203.

Therefore, the terminal equipment realizes the switching of the first antenna and the second antenna by changing the connection mode of the first switch, and further can select a proper antenna to transmit the LTE signal, so that the quality of the LTE signal is improved. The applicability of the terminal device increases.

When the terminal device performs SRS round trip, connection between the first switch 203 and the second switch 204 in the radio frequency circuit may refer to fig. 5 and fig. 6.

Fig. 5 is a schematic diagram of an antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 5, when the first port 203A of the first switch 203 is connected to the fourth port 203D of the first switch 203, the controller 202 controls the first port 204A of the second switch 204 and the third port 203C of the first switch 203 to be connected to the fourth port 204D of the second switch 204 and the fifth port 203E of the first switch 203, respectively; or the first port 204A of the second switch 204 and the third port 203C of the first switch 203 are controlled to be connected with the fourth port 204D of the second switch 204 and the sixth port 203F of the first switch 203, respectively; or the first port 204A of the second switch 204 is controlled to be connected with the fifth port 204E of the second switch 204; or to control the first port 204A of the second switch 204 to be connected to the sixth port 204F of the second switch 204.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the first antenna 205 through the first switch 203, and the LTE signal received by the first antenna 205 enters the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 through the first switch 203.

SRS output from the third port 201C of the radio frequency transceiver 201 is transmitted on the second antenna 206 or the third antenna 207 via the second switch 204 and the first switch 203; the SRS output from the third port 201C of the radio frequency transceiver 201 is transmitted on the fourth antenna 208 or the fifth antenna 209 via the second switch 204.

It can be appreciated that when the first antenna 205 is used to transmit and receive LTE signals, SRS output from the third port 201C of the radio frequency transceiver 201 may be transmitted on the second antenna 206, the third antenna 207, the fourth antenna 208, or the fifth antenna 209 in turn. The order in which the SRS is transmitted on the second antenna 206, the third antenna 207, the fourth antenna 208, or the fifth antenna 209 is not limited in the embodiments of the present application.

Fig. 6 is a schematic diagram of an antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 6, when the first port 203A of the first switch 203 is connected to the fifth port 203E of the first switch 203, the controller 202 controls the first port 204A of the second switch 204 and the third port 203C of the first switch 203 to be connected to the fourth port 204D of the second switch 204 and the fourth port 203D of the first switch 203, respectively; or the first port 204A of the second switch 204 and the third port 203C of the first switch 203 are controlled to be connected with the fourth port 204D of the second switch 204 and the sixth port 203F of the first switch 203, respectively; or the first port 204A of the second switch 204 is controlled to be connected with the fifth port 204E of the second switch 204; or to control the first port 204A of the second switch 204 to be connected to the sixth port 204F of the second switch 204.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the second antenna 206 through the first switch 203, and the LTE signal received by the second antenna 206 enters the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 through the first switch 203.

SRS output from the third port 201C of the radio frequency transceiver 201 is transmitted on the first antenna 205 or the third antenna 207 via the second switch 204 and the first switch 203; the SRS output from the third port 201C of the radio frequency transceiver 201 is transmitted on the fourth antenna 208 or the fifth antenna 209 via the second switch 204.

It can be appreciated that when the second antenna 206 is used to transmit and receive LTE signals, SRS output from the third port 201C of the radio frequency transceiver 201 may be transmitted on the first antenna 205, the third antenna 207, the fourth antenna 208, or the fifth antenna 209 in turn. The order in which SRS is transmitted on the first antenna 205, the third antenna 207, the fourth antenna 208, or the fifth antenna 209 is not limited in the embodiments of the present application.

It can be understood that, in the connection modes shown in fig. 5 and fig. 6, the transmission of the LTE signal is not affected during the SRS round trip, and the LTE signal interruption condition can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals. In this way, the terminal equipment realizes the coexistence of LTE communication and SRS round trip by changing the connection mode of the first switch and the second switch.

The connection of the first switch 203 and the second switch 204 in the radio frequency circuit can be referred to in fig. 7 and 8 when the terminal device performs ENDC communication.

Fig. 7 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 7, the first port 203A, the second port 203B, and the third port 203C of the first switch 203 are connected to the fourth port 203D, the fifth port 203E, and the sixth port 203F of the first switch 203, respectively; the first port 204A, the second port 204B, and the third port 204C of the second switch 204 are connected to the fourth port 204D, the fifth port 204E, and the sixth port 204F of the second switch 204, respectively.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the first antenna 205 via the first switch 203. LTE signals received by the first antenna 205 enter the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 via the first switch 203. LTE signals and/or NR signals received by the second antenna 206 enter the radio frequency transceiver 201 from the second port 201B of the radio frequency transceiver 201 via the first switch 203.

The NR signal output by the third port 201C of the radio frequency transceiver 201 is transmitted via the second switch 204 and the first switch 203 on the third antenna 207. The NR signal received by the third antenna 207 enters the radio frequency transceiver 201 from the third port 201C of the radio frequency transceiver 201 via the first switch 203 and the second switch 204. The NR signal received by the fourth antenna 208 and the NR signal received by the fifth antenna 209 enter the rf transceiver 201 from the fourth port 201D and the fifth port 201E of the rf transceiver 201 via the second switch 204, respectively.

In this way, the terminal device can implement dual connectivity communication of LTE and NR.

Fig. 8 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 8, the first port 203A, the second port 203B, and the third port 203C of the first switch 203 are connected to the fifth port 203E, the fourth port 203D, and the sixth port 204F of the first switch 203, respectively; the first port 204A, the second port 204B, and the third port 204C of the second switch 204 are connected to the fourth port 204D, the fifth port 204E, and the sixth port 204F of the second switch 204, respectively.

In this embodiment, the LTE signal output by the first port 201A of the radio frequency transceiver 201 is transmitted on the second antenna 206 via the first switch 203. LTE signals received by the second antenna 206 enter the radio frequency transceiver 201 from the first port 201A of the radio frequency transceiver 201 via the first switch 203. LTE signals and/or NR signals received by the first antenna 205 enter the radio frequency transceiver 201 from the second port 201B of the radio frequency transceiver 201 via the first switch 203.

The NR signal output by the third port 201C of the radio frequency transceiver 201 is transmitted via the second switch 204 and the first switch 203 on the third antenna 207. The NR signal received by the third antenna 207 enters the radio frequency transceiver 201 from the third port 201C of the radio frequency transceiver 201 via the first switch 203 and the second switch 204. The NR signal received by the fourth antenna 208 enters the rf transceiver 201 from the fourth port 201D of the rf transceiver 201 via the second switch 204. The NR signal received by the fifth antenna 209 enters the rf transceiver 201 from the fifth port 201E of the rf transceiver 201 via the second switch 204.

In a possible implementation manner, in the connection manner corresponding to fig. 7 and 8, the ports connected to the first port 204A, the second port 204B, and the third port 204C of the second switch 204 may be mutually replaced. In this way, the NR signal can be transmitted on the third antenna 207 or the fourth antenna 208 or the fifth antenna 209. Illustratively, the ports of the first port 204A and the second port 204B of the second switch 204 are replaced, and the first port 204A and the second port 204B of the second switch 204 are connected to the fifth port 204E and the fourth port 204C of the second switch 204, respectively; the NR signal is transmitted on a fourth antenna 208.

In this way, the terminal device realizes the switching of the third antenna, the fourth antenna and the fifth antenna by changing the connection mode of the second switch, and then can select a proper antenna to transmit an NR signal.

The antenna configuration in the NR communication may refer to the antenna configuration when the NR signal is transmitted and/or received in the ENDC communication, and the connection manner of the first switch and the second switch in the NR communication is similar to the connection manner when the NR signal is transmitted and/or received in the ENDC communication, which is not described herein.

In summary, in the radio frequency circuit shown in fig. 2, the terminal device may implement LTE communication, SRS round trip and ENDC communication by using 5 antennas and changing the connection mode of the first switch and/or the connection mode of the second switch, so as to implement dual mode functions of SA and NSA. The number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. The terminal device may also select an appropriate antenna to transmit the LTE signal and/or the NR signal, improving throughput. And the transmission of LTE signals is not affected during SRS round trip or NR communication.

Fig. 9 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application. As shown in fig. 9, the radio frequency circuit includes: a radio frequency transceiver 901, a controller 902, a third switch 903, a first antenna 904, a second antenna 905, a third antenna 906, a fourth antenna 907, and a fifth antenna 908.

The structure and function of the rf transceiver 901, the controller 902, the first antenna 904, the second antenna 905, the third antenna 906, the fourth antenna 907 and the fifth antenna 908 may be referred to the above related concepts and the description of the corresponding structure of the rf circuit shown in fig. 2, which are not repeated herein.

The controller 902 is configured to control the setting of the third switch 903, so that the first antenna 904, the second antenna 905, the third antenna 906, the fourth antenna 907, and/or the fifth antenna 908 transmit and/or receive radio frequency signals, thereby implementing 2×2mimo of LTE, 4×4mimo of NR, and SRS sounding.

In 2 x 2mimo and 4 x 4mimo of NR of LTE, the controller 902 is configured to control the setting of the third switch 903 such that the first antenna 904 is configured to transmit and receive LTE signals, the second antenna 905 is configured to receive LTE signals and/or NR signals, any one of the third antenna 906, the fourth antenna 907, and the fifth antenna 908 is configured to transmit NR signals, and each of the third antenna 906, the fourth antenna 907, and the fifth antenna 908 is configured to receive NR signals; alternatively, the first antenna 904 is made to receive LTE signals and/or NR signals, the second antenna 905 is made to transmit and receive LTE signals, any one of the third antenna 906, the fourth antenna 907, and the fifth antenna 908 is made to transmit NR signals, and the third antenna 906, the fourth antenna 907, and the fifth antenna 908 are made to receive NR signals.

In the SRS round trip process, the controller 902 is configured to control the setting of the third switch 903, so that when the first antenna 904 is used for transmitting and receiving LTE signals, the second antenna 905, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 transmits SRS; alternatively, when the second antenna 905 is used to transmit and receive LTE signals, the first antenna 904, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 is controlled to transmit SRS.

The controller 902 is connected to a third switch 903. It is understood that the third switch 903 may also be referred to as a switching unit.

The third switch 903 includes 10 ports. The first port 903A, the second port 903B, the third port 903C, the fourth port 903D, and the fifth port 903E of the third switch 903 are connected to the first port 901A, the second port 901B, the third port 901C, the fourth port 901D, and the fifth port 901E of the radio frequency transceiver 901, respectively; the sixth port 903F, seventh port 903G, eighth port 903H, ninth port 903I, and tenth port 903J of the third switch 903 are connected to the first antenna 904, the second antenna 905, the third antenna 906, the fourth antenna 907, and the fifth antenna 908, respectively. The third switch 903 is also connected to the controller 902. The third switch 903 may be a five pole, five throw switch (5P 5T) or other switch.

A possible connection of the third switch 903 in the radio frequency circuit shown in fig. 9 is described below with reference to fig. 10-15.

When the terminal device performs LTE communication, connection of the third switch 903 in the radio frequency circuit may refer to fig. 10 and 11.

Fig. 10 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 10, the first port 903A and the second port 903B of the third switch 903 are connected to the sixth port 903F and the seventh port 903G of the third switch 903, respectively.

In the embodiment of the present application, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the first antenna 904 via the third switch 903. LTE signals received by the first antenna 904 enter the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 via the third switch 903. LTE signals received by the second antenna 905 enter the radio frequency transceiver 901 from the second port 901B of the radio frequency transceiver 901 via the third switch 903.

In this way, the terminal device may implement LTE communication.

Fig. 11 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 11, the first port 903A and the second port 903B of the third switch 903 are connected to the seventh port 903G and the sixth port 903F of the third switch 903, respectively.

In the embodiment of the present application, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the second antenna 905 via the third switch 903. LTE signals received by the second antenna 905 enter the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 via the third switch 903. LTE signals received by the first antenna 904 enter the radio frequency transceiver 901 from the second port 901B of the radio frequency transceiver 901 via the third switch 903.

In this way, the terminal device realizes the switching between the first antenna and the second antenna by changing the connection mode of the third switch, so that a proper antenna can be selected to transmit the LTE signal, and the quality of the LTE signal is improved. The applicability of the terminal device increases.

When the terminal device performs SRS transmission, the connection of the third switch 903 in the radio frequency circuit may refer to fig. 12 and fig. 13.

Fig. 12 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 12, when the first port 903A of the third switch 903 is connected to the sixth port 903F of the third switch 903, the controller 902 controls the third port 903C of the third switch 903 to be connected to the seventh port 903G of the third switch 903; or a third port 903C controlling the third switch 903 is connected to a seventh port 903G of the third switch 903; or a third port 903C controlling the third switch 903 is connected to a seventh port 903G of the third switch 903; or the third port 903C controlling the third switch 903 is connected to the seventh port 903G of the third switch 903.

In this embodiment, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the first antenna 904 through the third switch 903, and the LTE signal received by the first antenna 904 enters the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 through the third switch 903.

The SRS output from the third port 901C of the radio frequency transceiver 901 may be transmitted on the second antenna 905, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 via the third switch 903.

It can be appreciated that when the first antenna 904 is used to transmit and receive LTE signals, SRS output by the third port 901C of the radio frequency transceiver 901 can be transmitted on the second antenna 905, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 in turn. The order in which the SRS is transmitted on the second antenna 905, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 is not limited in the embodiments of the present application.

Fig. 13 is a schematic diagram of antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 13, when the first port 903A of the third switch 903 is connected to the seventh port 903G of the third switch 903, the controller 902 controls the third port 903C of the third switch 903 to be connected to the sixth port 903F of the third switch 903; or a third port 903C controlling the third switch 903 is connected to a seventh port 903G of the third switch 903; or a third port 903C controlling the third switch 903 is connected to a seventh port 903G of the third switch 903; or the third port 903C controlling the third switch 903 is connected to the seventh port 903G of the third switch 903.

In this embodiment, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the second antenna 905 through the third switch 903, and the LTE signal received by the second antenna 905 enters the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 through the third switch 903.

SRS output from the third port 901C of the radio frequency transceiver 901 may be transmitted on the first antenna 904, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 via the third switch 903.

It can be appreciated that when the second antenna 905 is used to transmit and receive LTE signals, SRS output by the third port 901C of the radio frequency transceiver 901 can be transmitted on the first antenna 904, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 in turn. The order in which SRS is transmitted on the first antenna 904, the third antenna 906, the fourth antenna 907, or the fifth antenna 908 is not limited in the embodiments of the present application.

It can be understood that, in the connection manner shown in fig. 12 and fig. 13, when SRS is transmitted in turn, the transmission of the LTE signal is not affected, and the LTE signal interruption condition can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals. In this way, the terminal equipment realizes the coexistence of LTE communication and SRS round trip by changing the connection mode of the third switch.

The connection of the third switch 903 in the radio frequency circuit can be referred to fig. 14 and 15 when the terminal device performs ENDC communication.

Fig. 14 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 14, the first port 903A, the second port 903B, the third port 903C, the fourth port 903D, and the fifth port 903E of the third switch 903 are connected to the sixth port 903F, the seventh port 903G, the eighth port 903H, the ninth port 903I, and the tenth port 903J of the third switch 903, respectively.

In the embodiment of the present application, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the first antenna 904 via the third switch 903. LTE signals received by the first antenna 904 enter the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 via the third switch 903. LTE signals and/or NR signals received by the second antenna 905 enter the radio frequency transceiver 901 from the second port 901B of the radio frequency transceiver 901 via the third switch 903.

The NR signal output by the third port 901C of the radio frequency transceiver 901 is transmitted via the third switch 903 on the third antenna 906. The NR signal received by the third antenna 906, the NR signal received by the fourth antenna 907, and the NR signal received by the fifth antenna 908 enter the radio frequency transceiver 901 via the third switch 903 from the third port 901C, the fourth port 901D, and the fifth port 901E, respectively, of the radio frequency transceiver 901.

Fig. 15 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 15, the first port 903A, the second port 903B, the third port 903C, the fourth port 903D, and the fifth port 903E of the third switch 903 are connected to the seventh port 903G, the sixth port 903F, the eighth port 903H, the ninth port 903I, and the tenth port 903J of the third switch 903, respectively.

In the embodiment of the present application, the LTE signal output by the first port 901A of the radio frequency transceiver 901 is transmitted on the second antenna 905 via the third switch 903. LTE signals received by the second antenna 905 enter the radio frequency transceiver 901 from the first port 901A of the radio frequency transceiver 901 via the third switch 903. LTE signals and/or NR signals received by the first antenna 904 enter the radio frequency transceiver 901 from the second port 901B of the radio frequency transceiver 901 via the third switch 903.

In a possible implementation manner, in the connection manner corresponding to fig. 14 and 15, the ports of the third switch 903 connected to the third port 903C, the fourth port 903D, and the fifth port 903E of the third switch 903 may be replaced with each other. In this way, NR signals can be transmitted on third antenna 906, fourth antenna 907, or fifth antenna 908.

In this way, the terminal device realizes the switching of the third antenna, the fourth antenna and the fifth antenna by changing the connection mode of the third switch, and then can select a proper antenna to transmit the NR signal.

The antenna configuration in the NR communication may refer to the antenna configuration when the NR signal is transmitted and/or received in the enb communication, and the connection manner of the third switch in the NR communication is similar to the connection manner when the NR signal is transmitted and/or received in the enb communication, which is not described herein.

In summary, in the radio frequency circuit shown in fig. 9, the terminal device realizes the dual mode functions of SA and NSA by implementing LTE communication, SRS round robin and ENDC communication through 5 antennas and changing the connection mode of the third switch. The number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. The terminal device may also select an appropriate antenna to transmit the LTE signal and/or the NR signal, improving throughput. And the transmission of LTE signals is not affected during SRS round trip or NR communication.

Fig. 16 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application. As shown in fig. 16, the radio frequency circuit includes: a radio frequency transceiver 1601, a controller 1602, a fourth switch 1603, a fifth switch 1604, a first antenna 1605, a second antenna 1606, a third antenna 1607, a fourth antenna 1608, and a fifth antenna 1609.

The structure and function of the rf transceiver 1601, the controller 1602, the first antenna 1605, the second antenna 1606, the third antenna 1607, the fourth antenna 1608 and the fifth antenna 1609 may be referred to the above related concepts and the description of the corresponding structure of the rf circuit shown in fig. 2, and will not be repeated herein.

The controller 1602 is configured to control settings of the fourth switch 1603 and the fifth switch 1604 such that the first antenna 1605, the second antenna 1606, the third antenna 1607, the fourth antenna 1608 and/or the fifth antenna 1609 transmit and/or receive radio frequency signals, thereby implementing 2×2mimo of LTE, 4×4mimo of NR, and SRS sounding.

In 2 x 2mimo and 4 x 4mimo of NR of LTE, the controller 1602 is configured to control settings of the fourth switch 1603 and the fifth switch 1604 such that the first antenna 1605 is configured to transmit and receive LTE signals, the second antenna 1606 is configured to receive LTE signals and/or NR signals, any one of the third antenna 1607, the fourth antenna 1608, and the fifth antenna 1609 is configured to transmit NR signals, and each of the third antenna 1607, the fourth antenna 1608, and the fifth antenna 1609 is configured to receive NR signals; alternatively, the first antenna 1605 is used to receive LTE signals and/or NR signals, the second antenna 1606 is used to transmit and receive LTE signals, any one of the third antenna 1607, the fourth antenna 1608, and the fifth antenna 1609 is used to transmit NR signals, and the third antenna 1607, the fourth antenna 1608, and the fifth antenna 1609 are each used to receive NR signals.

During the SRS round trip, the controller 1602 is configured to control the settings of the fourth switch 1603 and the fifth switch 1604, and further when the first antenna 1605 is used for transmitting and receiving LTE signals, the second antenna 1606, the third antenna 1607, the fourth antenna 1608 or the fifth antenna 1609 transmits SRS; alternatively, when the second antenna 1606 is used to transmit and receive LTE signals, the first antenna 1605, the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 is controlled to transmit SRS.

It is understood that the fourth switch 1603 and the fifth switch 1604 may be collectively referred to as a switching unit. The fourth switch 1603 and the fifth switch 1604 are each connected to the controller 1602.

The fourth switch 1603 includes 4 ports. The first port 1603A of the fourth switch 1603 is connected to the first port 1601A of the radio frequency transceiver 1601; the second port 1603B of the fourth switch 1603 is connected to the fifth port 1604E of the fifth switch 1604; the third port 1603C and the fourth port 1603D of the fourth switch 1603 are connected to the first antenna 1605 and the second antenna 1606, respectively. Fourth switch 1603 is a double pole double throw switch (2P 2T) or other switch.

The fifth switch 1604 includes 8 ports. The first port 1604A, the second port 1604B, the third port 1604C, and the fourth port 1604D of the fifth switch 1604 are connected to the second port 1601B, the third port 1601C, the fourth port 1601D, and the fifth port 1601E of the radio frequency transceiver 1601, respectively; a fifth port 1604E of the fifth switch 1604 is connected to a second port 1603B of the fourth switch 1603; the sixth port 1604F, the seventh port 1604G, and the eighth port 1604H of the fifth switch 1604 are connected to the third antenna 1607, the fourth antenna 1608, and the fifth antenna 1609, respectively. The fifth switch 1604 is a four pole, four throw switch (4P 4T) or other switch.

A possible connection between the fourth switch 1603 and the fifth switch 1604 in the rf circuit shown in fig. 16 is described below with reference to fig. 17-22.

When the terminal device performs LTE communication, connection of the fourth switch 1603 and the fifth switch 1604 in the radio frequency circuit can refer to fig. 17 and 18.

Fig. 17 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 17, the first port 1603A and the second port 1603B of the fourth switch 1603 are connected to the third port 1603C and the fourth port 1603D of the fourth switch 1603, respectively; the first port 1604A of the fifth switch 1604 is connected to the fifth port 1604E of the fifth switch 1604.

In the embodiment of the present application, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the first antenna 1605 via the fourth switch 1603. LTE signals received by the first antenna 1605 enter the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 via the fourth switch 1603. LTE signals received by the second antenna 1606 enter the radio frequency transceiver 1601 from the second port 1601B of the radio frequency transceiver 1601 via the fourth switch 1603 and the fifth switch 1604.

In this way, the terminal device may implement LTE communication.

Fig. 18 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 18, the first port 1603A and the second port 1603B of the fourth switch 1603 are connected to the fourth port 1603D and the third port 1603C of the fourth switch 1603, respectively; the first port 1604A of the fifth switch 1604 is connected to the fifth port 1604E of the fifth switch 1604.

In the embodiment of the present application, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the second antenna 1606 through the fourth switch 1603. LTE signals received by the second antenna 1606 enter the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 via the fourth switch 1603. LTE signals received by the first antenna 1605 enter the radio frequency transceiver 1601 from the second port 1601B of the radio frequency transceiver 1601 via the fourth switch 1603 and the fifth switch 1604.

In this way, the terminal device realizes the switching between the first antenna and the second antenna by changing the connection mode of the fourth switch, so that a proper antenna can be selected to transmit the LTE signal, and the quality of the LTE signal is improved. The applicability of the terminal device increases.

The connection between the fourth switch 1603 and the fifth switch 1604 in the rf circuit can be referred to fig. 19 and 20 when the terminal device performs SRS transmission.

Fig. 19 is a schematic diagram of an antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 19, when the first port 1603A of the fourth switch 1603 is connected to the third port 1603C of the fourth switch 1603, the controller 1602 controls the second port 1604B of the fifth switch 1604 and the second port 1603B of the fourth switch 1603 to be connected to the fifth port 1604E of the fifth switch 1604 and the fourth port 1603D of the fourth switch 1603, respectively; or the second port 1604B of the fifth switch 1604 is controlled to be connected with the sixth port 1604F of the fifth switch 1604; or the second port 1604B of the fifth switch 1604 is controlled to be connected with the seventh port 1604G of the fifth switch 1604; or the second port 1604B of the fifth switch 1604 is controlled to be connected to the eighth port 1604H of the fifth switch 1604.

In this embodiment, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the first antenna 1605 through the fourth switch 1603, and the LTE signal received by the first antenna 1605 enters the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 through the fourth switch 1603.

SRS output from the third port 1601C of the radio frequency transceiver 1601 is transmitted on the second antenna 1606 via the fifth switch 1604 and the fourth switch 1603; the SRS output from the third port 1601C of the radio frequency transceiver 1601 is transmitted on the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 via the fifth switch 1604.

It can be appreciated that when the first antenna 1605 is used to transmit and receive LTE signals, SRS output by the third port 1601C of the radio frequency transceiver 1601 can be transmitted on the second antenna 1606, the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 in turn. The order in which the SRS is transmitted on the second antenna 1606, the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 is not limited in the embodiments of the present application.

Fig. 20 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to the embodiment of the present application. As shown in fig. 20, when the first port 1603A of the fourth switch 1603 is connected to the fourth port 1603D of the fourth switch 1603, the controller 1602 controls the second port 1604B of the fifth switch 1604 and the second port 1603B of the fourth switch 1603 to be connected to the fifth port 1604E of the fifth switch 1604 and the third port 1603C of the fourth switch 1603, respectively; or the second port 1604B of the fifth switch 1604 is controlled to be connected with the sixth port 1604F of the fifth switch 1604; or the second port 1604B of the fifth switch 1604 is controlled to be connected with the seventh port 1604G of the fifth switch 1604; or the second port 1604B of the fifth switch 1604 is controlled to be connected to the eighth port 1604H of the fifth switch 1604.

In this embodiment, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the second antenna 1606 through the fourth switch 1603, and the LTE signal received by the second antenna 1606 enters the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 through the fourth switch 1603.

SRS output from the third port 1601C of the radio frequency transceiver 1601 is transmitted on the first antenna 1605 via the fifth switch 1604 and the fourth switch 1603; the SRS output from the third port 1601C of the radio frequency transceiver 1601 is transmitted on the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 via the fifth switch 1604.

It can be appreciated that when the second antenna 1606 is used to transmit and receive LTE signals, SRS output by the third port 1601C of the radio frequency transceiver 1601 can be transmitted on the first antenna 1605, the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 in turn. The order in which SRS is transmitted on the first antenna 1605, the third antenna 1607, the fourth antenna 1608, or the fifth antenna 1609 is not limited in the embodiments of the present application.

It can be understood that, in the connection manner shown in fig. 19 and fig. 20, when SRS is transmitted in turn, the transmission of the LTE signal is not affected, and the LTE signal interruption condition can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals. In this way, the terminal equipment realizes the coexistence of LTE communication and SRS round trip by changing the connection mode of the fourth switch and the fifth switch.

The connection of the fourth switch 1603 and the fifth switch 1604 in the radio frequency circuit can be referred to fig. 21 and 22 when the terminal apparatus performs ENDC communication.

Fig. 21 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 21, the first port 1603A and the second port 1603B of the fourth switch 1603 are connected to the third port 1603C and the fourth port 1603D of the fourth switch 1603, respectively; the first, second, third and fourth ports 1604A, 1604B, 1604C, 1604D of the fifth switch 1604 are connected to fifth, sixth, seventh and eighth ports 1604E, 1604F, 1604G, 1604H, respectively, of the fifth switch 1604.

In the embodiment of the present application, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the first antenna 1605 via the fourth switch 1603. LTE signals received by the first antenna 1605 enter the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 via the fourth switch 1603. LTE and/or NR signals received by the second antenna 1606 enter the radio frequency transceiver 1601 from the second port 1601B of the radio frequency transceiver 1601 via the fourth switch 1603 and the fifth switch 1604.

The NR signal output by the third port 1601C of the radio frequency transceiver 1601 is transmitted on the third antenna 1607 via the fifth switch 1604. NR signals received by the third antenna 1607, NR signals received by the fourth antenna 1608, and NR signals received by the fifth antenna 1609 enter the radio frequency transceiver 1601 from the third port 1601C, fourth port 1601D, and fifth port 1601E, respectively, of the radio frequency transceiver 1601 via the fifth switch 1604.

Fig. 22 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 22, the first port 1603A and the second port 1603B of the fourth switch 1603 are connected to the fourth port 1603D and the third port 1603C of the fourth switch 1603, respectively; the first, second, third and fourth ports 1604A, 1604B, 1604C, 1604D of the fifth switch 1604 are connected to fifth, sixth, seventh and eighth ports 1604E, 1604F, 1604G, 1604H, respectively, of the fifth switch 1604.

In the embodiment of the present application, the LTE signal output by the first port 1601A of the radio frequency transceiver 1601 is transmitted on the second antenna 1606 through the fourth switch 1603. LTE signals received by the second antenna 1606 enter the radio frequency transceiver 1601 from the first port 1601A of the radio frequency transceiver 1601 via the fourth switch 1603. LTE signals and/or NR signals received by the first antenna 1605 enter the radio frequency transceiver 1601 from the second port 1601B of the radio frequency transceiver 1601 via the fourth switch 1603 and the fifth switch 1604.

In a possible implementation manner, in the connection manner corresponding to fig. 21 and 22, the ports connected to the second port 1604B, the third port 1604C, and the fourth port 1604D of the fifth switch 1604 may be mutually exchanged. In this way, NR signals can be transmitted on third antenna 1607 or fourth antenna 1608 or fifth antenna 1609.

In this way, the terminal device realizes the switching of the third antenna, the fourth antenna and the fifth antenna by changing the connection mode of the fifth switch, and then can select a proper antenna to transmit the NR signal.

The antenna configuration in the NR communication may refer to the antenna configuration when the NR signal is transmitted and/or received in the ENDC communication, and the connection manner of the fourth switch and the fifth switch in the NR communication is similar to the connection manner when the NR signal is transmitted and/or received in the ENDC communication, which is not described herein.

In summary, in the radio frequency circuit shown in fig. 16, the terminal device changes the connection mode of the fourth switch and/or the connection mode of the fifth switch through 5 antennas, so as to implement LTE communication, SRS round trip and ENDC communication, and implement dual mode functions of SA and NSA. The number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. The terminal device may also select an appropriate antenna to transmit the LTE signal and/or the NR signal, improving throughput. And the transmission of LTE signals is not affected during SRS round trip or NR communication.

The radio frequency circuit implementing antenna sharing by unequal switching is described below in connection with fig. 23-29.

Fig. 23 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application. As shown in fig. 23, the radio frequency circuit includes: a radio frequency transceiver 2301, a controller 2302, a sixth switch 2303, a seventh switch 2304, an eighth switch 2305, a first antenna 2306, a second antenna 2307, a third antenna 2308, a fourth antenna 2309 and a fifth antenna 2310.

The structure and function of the rf transceiver 2301, the controller 2302, the first antenna 2306, the second antenna 2307, the third antenna 2308, the fourth antenna 2309 and the fifth antenna 2310 may refer to the above related concepts and the description of the corresponding structure of the rf circuit shown in fig. 2, and will not be repeated herein.

The controller 2302 is configured to control settings of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 so that the first antenna 2306, the second antenna 2307, the third antenna 2308, the fourth antenna 2309 and/or the fifth antenna 2310 transmit and/or receive radio frequency signals, thereby implementing 2×2mimo of LTE, 4×4mimo of NR, and SRS sounding.

In 4×4mimo of 2×2mimo and NR of LTE, the controller 2302 is configured to control settings of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 such that the first antenna 2306 is configured to transmit and receive LTE signals, the second antenna 2307 is configured to receive LTE signals and/or NR signals, any one of the third antenna 2308, the fourth antenna 2309 and the fifth antenna 2310 is configured to transmit NR signals, and each of the third antenna 2308, the fourth antenna 2309 and the fifth antenna 2310 is configured to receive NR signals; alternatively, the first antenna 2306 is configured to receive LTE signals and/or NR signals, the second antenna 2307 is configured to transmit and receive LTE signals, any one of the third antenna 2308, the fourth antenna 2309, and the fifth antenna 2310 is configured to transmit NR signals, and each of the third antenna 2308, the fourth antenna 2309, and the fifth antenna 2310 is configured to receive NR signals.

During the SRS round trip, the controller 2302 is configured to control the settings of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305, so that when the first antenna 2306 is used to transmit and receive LTE signals, SRS is transmitted on the second antenna 2307, the third antenna 2308, the fourth antenna 2309 or the fifth antenna 2310; alternatively, when the second antenna 2307 is used to transmit and receive LTE signals, SRS is transmitted on the first antenna 2306, the third antenna 2308, the fourth antenna 2309, or the fifth antenna 2310.

It is to be understood that the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 may be collectively referred to as a switching unit. The sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 are all connected to the controller 2302.

The sixth switch 2303 includes 6 ports. The first port 2303A and the second port 2303B of the sixth switch 2303 are connected to the first port 2301A and the second port 2301B of the radio frequency transceiver 2301, respectively; the third port 2303C of the sixth switch is open; the fourth port 2303D of the sixth switch is connected to the third port 2304C of the seventh port; the fifth port 2303E and the sixth port 2303F of the sixth switch 2303 are connected to the first antenna 2306 and the second antenna 2307, respectively. Sixth switch 2303 may be a double pole, four throw switch (DP 4T).

The seventh switch 2304 includes 6 ports. The first port 2304A and the second port 2304B of the seventh switch 2304 are connected to the third port 2301C and the fourth port 2301D of the radio frequency transceiver 2301, respectively; the third port 2304C of the seventh switch 2304 is connected to the fourth port 2303D of the sixth switch 2303; the fourth port 2304D of the seventh switch 2304 is connected to the second port 2305B of the eighth switch 2305; the fifth port 2304E and the sixth port 2304F of the seventh switch 2304 are connected to the third antenna 2308 and the fourth antenna 2309, respectively. Seventh switch 2304 may be a double pole, four throw switch (DP 4T).

The eighth switch 2305 includes 3 ports. The first port 2305A of the eighth switch 2305 is connected to the fifth port 2301E of the radio frequency transceiver 2301; the second port 2305B of the eighth switch 2305 is connected to the fourth port 2304D of the seventh switch 2304; the third port 2305C of the eighth switch 2305 is connected to the fifth antenna 2310. Eighth switch 2305 may be a single pole double throw switch (SP 2T).

Possible connections of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 in the radio frequency circuit shown in fig. 23 are described below with reference to fig. 24 to 29.

When the terminal device performs LTE communication, connection of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 in the radio frequency circuit can refer to fig. 24 and 25.

Fig. 24 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 24, the first port 2303A and the second port 2303B of the sixth switch 2303 are connected to the fifth port 2303E and the sixth port 2303F of the sixth switch 2303, respectively.

In the embodiment of the present application, the LTE signal output by the first port 2301A of the radio frequency transceiver 2301 is transmitted on the first antenna 2306 through the sixth switch 2303. LTE signals received by the first antenna 2306 enter the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 via the sixth switch 2303. LTE signals received by the second antenna 2307 enter the radio frequency transceiver 2301 from the second port 2301B of the radio frequency transceiver 2301 via the sixth switch 2303.

In this way, the terminal device may implement LTE communication.

Fig. 25 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 25, the first port 2303A and the second port 2303B of the sixth switch 2303 are connected to the sixth port 2303F and the fifth port 2303E of the sixth switch 2303, respectively.

In this embodiment, the LTE signal output from the first port 2301A of the radio frequency transceiver 2301 is transmitted on the second antenna 2307 through the sixth switch 2303. LTE signals received by the second antenna 2307 enter the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 via the sixth switch 2303. LTE signals received by the first antenna 2306 enter the radio frequency transceiver 2301 from the second port 2301B of the radio frequency transceiver 2301 via the sixth switch 2303.

In this way, the terminal device realizes the switching between the first antenna and the second antenna by changing the connection mode of the sixth switch, and then can select a proper antenna to transmit the LTE signal.

When the terminal device performs SRS transmission, connection of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 in the radio frequency circuit can refer to fig. 26 and fig. 27.

Fig. 26 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to the embodiment of the present application. As shown in fig. 26, when the first port 2303A of the sixth switch 2303 is connected to the fifth port 2303E of the sixth switch 2303, the controller 2302 controls the fourth port 2303D of the sixth switch 2303 and the first port 2304A of the seventh switch 2304 to be connected to the sixth port 2303F of the sixth switch 2303 and the third port 2304C of the seventh switch 2304, respectively; or the first port 2304A of the seventh switch 2304 and the second port 2305B of the eighth switch 2305 are controlled to be connected to the fourth port 2304D of the seventh switch 2304 and the third port 2305C of the eighth switch 2305, respectively; or the first port 2304A of the seventh switch 2304 is controlled to be connected to the fifth port 2304E of the seventh switch 2304; or the first port 2304A of the seventh switch 2304 is controlled to be connected to the sixth port 2304F of the seventh switch 2304.

In this embodiment, the LTE signal output by the first port 2301A of the radio frequency transceiver 2301 is transmitted on the first antenna 2306 through the sixth switch 2303, and the LTE signal received by the first antenna 2306 enters the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 through the sixth switch 2303.

The SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the second antenna 2307 via the seventh switch 2304 and the sixth switch 2303; the SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the third antenna 2308 or the fourth antenna 2309 via the seventh switch 2304; the SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the fifth antenna 2310 via the seventh switch 2304 and the eighth switch 2305.

It can be appreciated that when the first antenna 2306 is used to transmit and receive LTE signals, SRS output by the third port 2301C of the radio frequency transceiver 2301 can be transmitted on the second antenna 2307, the third antenna 2308, the fourth antenna 2309 or the fifth antenna 2310 in turn. The order in which the SRS is transmitted on the second antenna 2307, the third antenna 2308, the fourth antenna 2309, or the fifth antenna 2310 is not limited in the embodiments of the present application.

Fig. 27 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to an embodiment of the present application. As shown in fig. 27, when the first port 2303A of the sixth switch 2303 is connected to the sixth port 2303F of the sixth switch 2303, the controller 2302 controls the fourth port 2303D of the sixth switch 2303 and the first port 2304A of the seventh switch 2304 to be connected to the sixth port 2303F of the sixth switch 2303 and the third port 2304C of the seventh switch 2304, respectively; or the first port 2304A of the seventh switch 2304 and the second port 2305B of the eighth switch 2305 are controlled to be connected to the fourth port 2304D of the seventh switch 2304 and the third port 2305C of the eighth switch 2305, respectively; or the first port 2304A of the seventh switch 2304 is controlled to be connected to the fifth port 2304E of the seventh switch 2304; or the first port 2304A of the seventh switch 2304 is controlled to be connected to the sixth port 2304F of the seventh switch 2304.

In this embodiment, the LTE signal output by the first port 2301A of the radio frequency transceiver 2301 is transmitted on the second antenna 2307 through the sixth switch 2303, and the LTE signal received by the second antenna 2307 enters the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 through the sixth switch 2303.

The SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the first antenna 2306 via the seventh switch 2304 and the sixth switch 2303; the SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the third antenna 2308 or the fourth antenna 2309 via the seventh switch 2304; the SRS output from the third port 2301C of the radio frequency transceiver 2301 is transmitted on the fifth antenna 2310 via the seventh switch 2304 and the eighth switch 2305.

It can be appreciated that when the second antenna 2307 is used to transmit and receive LTE signals, SRS output from the third port 2301C of the radio frequency transceiver 2301 can be transmitted on the first antenna 2306, the third antenna 2308, the fourth antenna 2309 or the fifth antenna 2310 in turn. The order in which the SRS is transmitted on the first antenna 2306, the third antenna 2308, the fourth antenna 2309, or the fifth antenna 2310 is not limited in the embodiments of the present application.

It can be understood that, in the connection manner shown in fig. 26 and fig. 27, when SRS is transmitted in turn, the transmission of the LTE signal is not affected, and the LTE signal interruption condition can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals. In this way, the terminal device realizes the coexistence of LTE communication and SRS round trip by changing the connection modes of the sixth switch, the seventh switch and the eighth switch.

Connection of the sixth switch 2303, the seventh switch 2304 and the eighth switch 2305 in the radio frequency circuit when the terminal device performs ENDC communication can be referred to fig. 28 and 29.

Fig. 28 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 28, a first port 2303A and a second port 2303B of a sixth switch 2303 are connected to a fifth port 2303E and a sixth port 2303F of the sixth switch 2303, respectively; the first port 2304A and the second port 2304B of the seventh switch 2304 are connected to the fifth port 2304E and the sixth port 2304F of the seventh switch 2304, respectively; the first port 2305A of the eighth switch 2305 is connected to the third port 2305C of the eighth switch 2305.

In the embodiment of the present application, the LTE signal output by the first port 2301A of the radio frequency transceiver 2301 is transmitted on the first antenna 2306 through the sixth switch 2303. LTE signals received by the first antenna 2306 enter the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 via the sixth switch 2303. LTE signals and/or NR signals received by the second antenna 2307 enter the radio frequency transceiver 2301 from the second port 2301B of the radio frequency transceiver 2301 via the sixth switch 2303.

The NR signal output by the third port 2301C of the radio frequency transceiver 2301 is transmitted on the third antenna 2308 via the seventh switch 2304. The NR signal received by the third antenna 2308 and the NR signal received by the fourth antenna 2309 enter the radio frequency transceiver 2301 from the third port 2301C and the fourth port 2301D of the radio frequency transceiver 2301 via the seventh switch 2304, respectively. NR signals received by the fifth antenna 2310 enter the rf transceiver 2301 from the fifth port 2301E of the rf transceiver 2301 via the eighth switch 2305.

Fig. 29 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 29, the first port 2303A and the second port 2303B of the sixth switch 2303 are connected to a sixth port 2303F and a fifth port 2303E of the sixth switch 2303, respectively; the first port 2304A and the second port 2304B of the seventh switch 2304 are connected to the fifth port 2304E and the sixth port 2304F of the seventh switch 2304, respectively; the first port 2305A of the eighth switch 2305 is connected to the third port 2305C of the eighth switch 2305.

In this embodiment, the LTE signal output from the first port 2301A of the radio frequency transceiver 2301 is transmitted on the second antenna 2307 through the sixth switch 2303. LTE signals received by the second antenna 2307 enter the radio frequency transceiver 2301 from the first port 2301A of the radio frequency transceiver 2301 via the sixth switch 2303. LTE signals and/or NR signals received by the first antenna 2306 enter the radio frequency transceiver 2301 from the second port 2301B of the radio frequency transceiver 2301 via the sixth switch 2303.

In a possible implementation manner, in the connection manner corresponding to fig. 28 and 29, the ports connected to the first port 2304A and the second port 2304B of the seventh switch 2304 may be mutually replaced and connected. In this way, NR signals can be transmitted on third antenna 2808 or fourth antenna 2309.

In this way, the terminal device realizes the switching between the third antenna and the fourth antenna by changing the connection mode of the seventh switch, and then can select a proper antenna to transmit the NR signal.

The antenna configuration in the NR communication may refer to the antenna configuration when the NR signal is transmitted and/or received in the ENDC communication, and the connection manner of the sixth switch, the seventh switch, and the eighth switch in the NR communication is similar to the connection manner when the NR signal is transmitted and/or received in the ENDC communication, which is not repeated herein.

In summary, in the radio frequency circuit shown in fig. 23, the terminal device changes the connection modes of the sixth switch, the seventh switch and/or the eighth switch through 5 antennas, so as to implement LTE communication, SRS round trip and ENDC communication, and implement dual mode functions of SA and NSA. The number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. The terminal device may also select an appropriate antenna to transmit the LTE signal and/or the NR signal, improving throughput. And the transmission of LTE signals is not affected during SRS round trip or NR communication.

Radio frequency circuitry for implementing antenna sharing through peer switches and peer switches is described below in connection with fig. 30-36.

Fig. 30 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present application. As shown in fig. 30, the radio frequency circuit includes: a radio frequency transceiver 3001, a controller 3002, a ninth switch 3003, a tenth switch 3004, an eleventh switch 3005, a twelfth switch 3006, a first antenna 3007, a second antenna 3008, a third antenna 3009, a fourth antenna 3010, and a fifth antenna 3011.

The structure and function of the rf transceiver 3001, the controller 3002, the first antenna 3007, the second antenna 3008, the third antenna 3009, the fourth antenna 3010 and the fifth antenna 3011 may refer to the above related concepts and the description of the corresponding structure of the rf circuit shown in fig. 2, and will not be repeated herein.

The controller 3002 is configured to control the setting of the ninth switch 3003, the tenth switch 3004, the eleventh switch 3005, and the twelfth switch 3006, so that the first antenna 3007, the second antenna 3008, the third antenna 3009, the fourth antenna 3010, and the fifth antenna 3011 transmit and/or receive radio frequency signals, thereby implementing 2×2mimo of LTE, 4×4mimo of NR, and SRS round transmission.

In 2 x 2mimo and 4 x 4mimo of NR of LTE, the controller 3002 is configured to control settings of the ninth switch 3003, the tenth switch 3004, the eleventh switch 3005, and the twelfth switch 3006 such that the first antenna 3007 is configured to transmit and receive LTE signals, the second antenna 3008 is configured to receive LTE signals and/or NR signals, any one of the third antenna 3009, the fourth antenna 3010, and the fifth antenna 3011 is configured to transmit NR signals, and the third antenna 3009, the fourth antenna 3010, and the fifth antenna 3011 are configured to receive NR signals; alternatively, the first antenna 3007 is made to receive LTE signals and/or NR signals, the second antenna 3008 is made to transmit and receive LTE signals, any one of the third antenna 3009, the fourth antenna 3010, and the fifth antenna 3011 is made to transmit NR signals, and the third antenna 3009, the fourth antenna 3010, and the fifth antenna 3011 are made to receive NR signals.

During SRS transmission, the controller 3002 is configured to control the ninth switch 3003, tenth switch 3004, eleventh switch 3005, and twelfth switch 3006 to set, and further transmit SRS on the second antenna 3008, third antenna 3009, fourth antenna 3010, or fifth antenna 3011 when the first antenna 3007 is configured to transmit and receive LTE signals; alternatively, when the second antenna 3008 is used to transmit and receive LTE signals, SRS is transmitted on the first antenna 3007, the third antenna 3009, the fourth antenna 3010, or the fifth antenna 3011.

It is to be understood that the ninth switch 3003, the tenth switch 3004, the eleventh switch 3005, and the twelfth switch 3006 may be collectively referred to as a switching unit. The ninth switch 3003, tenth switch 3004, eleventh switch 3005, and twelfth switch 3006 are all connected to the controller 3002.

The ninth switch 3003 includes 4 ports. The first port 3003A of the ninth switch 3003 is connected to the first port 3001A of the radio frequency transceiver 3001; the second port 3003D of the ninth switch 3003 is connected to the third port 3004C of the tenth switch 3004; the third port 3003C and the fourth port 3003D of the ninth switch 3003 are connected to the first antenna 3007 and the second antenna 3008, respectively. The ninth switch 3003 may be a double pole double throw switch (DPDT).

The tenth switch 3004 includes 6 ports. The first port 3004A and the second port 3004B of the tenth switch 3004 are connected to the second port 3001B and the third port 3001C of the radio frequency transceiver 3001, respectively; the third port 3004C of the tenth switch 3004 is connected to the second port 3003B of the ninth switch 3003; the fourth port 3004D of the tenth switch 3004 is connected to the second port 3005B of the eleventh switch 3005; the fifth port 3004E of the tenth switch 3004 is connected to the third antenna 3009; the sixth port 3004F of the tenth switch 3004 is connected to the first port 3006A of the twelfth switch 3006. Tenth switch 3004 may be a double pole four throw switch (DP 4T).

The eleventh switch 3005 includes 3 ports. The first port 3005A of the eleventh switch 3005 is connected to the fourth port 3001D of the radio frequency transceiver 3001; the second port 3005B of the eleventh switch 3005 is connected to the fourth port 3004D of the tenth switch 3004; the third port 3005C of the eleventh switch 3005 is connected to the fourth antenna 3010. The eleventh switch may be a single pole double throw switch (SP 2T).

The twelfth switch 3006 includes 3 ports. The first port 3006A of the twelfth switch 3006 is connected to the fifth port 3004E of the tenth switch 3004; the second port 3006B of the twelfth switch 3006 is connected to the fifth port 3001E of the radio frequency transceiver 3001; the third port 3006C of the twelfth switch 3006 is connected to the fifth antenna 3011. The twelfth switch may be a single pole double throw switch (SP 2T).

Possible connection situations of the ninth switch 3003, the tenth switch 3004, the eleventh switch 3005, and the twelfth switch 3006 in the radio frequency circuit shown in fig. 30 will be described with reference to fig. 31 to 36.

When the terminal device performs LTE communication, connection of the ninth switch 3003, tenth switch 3004, eleventh switch 3005, and twelfth switch 3006 in the radio frequency circuit can be referred to fig. 31 and 32.

Fig. 31 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 31, the first port 3003A and the second port 3003B of the ninth switch 3003 are connected to the third port 3003C and the fourth port 3003D of the ninth switch 3003, respectively, and the first port 3004A of the tenth switch 3004 is connected to the third port 3004C of the tenth switch 3004.

In the embodiment of the present application, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the first antenna 3007 through the ninth switch 3003. LTE signals received by the first antenna 3007 enter the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 via the ninth switch 3003. LTE signals received by the second antenna 3008 enter the radio frequency transceiver 3001 from the second port 3001B of the radio frequency transceiver 3001 via the ninth switch 3003 and the tenth switch 3004.

In this way, the terminal device may implement LTE communication.

Fig. 32 is a schematic diagram of an antenna configuration during LTE communication according to an embodiment of the present application. As shown in fig. 32, the first port 3003A and the second port 3003B of the ninth switch 3003 are connected to the fourth port 3003D and the third port 3003C of the ninth switch 3003, respectively, and the first port 3004A of the tenth switch 3004 is connected to the third port 3004C of the tenth switch 3004.

In the embodiment of the present application, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the second antenna 3008 through the ninth switch 3003. LTE signals received by the second antenna 3008 enter the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 via the ninth switch 3003. LTE signals received by the first antenna 3007 enter the radio frequency transceiver 3001 from the second port 3001B of the radio frequency transceiver 3001 via the ninth switch 3003 and the tenth switch 3004.

In this way, the terminal device realizes the switching between the first antenna and the second antenna by changing the connection mode of the ninth switch, so that a proper antenna can be selected to transmit the LTE signal, and the quality of the LTE signal is improved. The applicability of the terminal device increases.

When the terminal device performs SRS round robin, connection of the ninth switch 3003, the tenth switch 3004, the eleventh switch 3005 and the twelfth switch 3006 in the radio frequency circuit may refer to fig. 33 and fig. 34.

Fig. 33 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to the embodiment of the present application. As shown in fig. 33, when the first port 3003A of the ninth switch 3003 is connected to the third port 3003C of the ninth switch 3003, the controller 3003 controls the second port 3004B of the tenth switch 3004 and the second port 3003B of the ninth switch 3003 to be connected to the third port 3004C of the tenth switch 3004 and the fourth port 3003D of the ninth switch 3003, respectively; or the second port 3004B of the tenth switch 3004 is connected to the fifth port 3004E of the tenth switch 3004; or the second port 3004B of the tenth switch 3004 and the second port 3005B of the eleventh switch 3005 are controlled to be connected to the fourth port 3004D of the tenth switch 3004 and the third port 3005C of the eleventh switch 3005, respectively; or the second port 3004B of the tenth switch 3004 and the first port 3006A of the twelfth switch 3006 are controlled to be connected to the sixth port 3004F of the tenth switch 3004 and the third port 3006C of the twelfth switch 3006, respectively.

In this embodiment, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the first antenna 3007 through the ninth switch 3003, and the LTE signal received by the first antenna 3007 enters the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 through the ninth switch 3003.

SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the second antenna 3008 via the tenth switch 3004 and the ninth switch 3003; SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the third antenna 3009 via the ninth switch 3003; SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the fourth antenna 3010 via the tenth switch 3004 and the eleventh switch 3005; the SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the fourth antenna 3010 via the tenth switch 3004 and the twelfth switch 3006.

It can be appreciated that when the first antenna 3007 is used to transmit and receive LTE signals, SRS output from the third port 3001C of the radio frequency transceiver 3001 can be transmitted on the second antenna 3008, the third antenna 3009, the fourth antenna 3010, or the fifth antenna 3011 in turn. The embodiment of the present application does not limit the order in which the SRS is transmitted on the second antenna 3008, the third antenna 3009, the fourth antenna 3010, or the fifth antenna 3011.

Fig. 34 is an exemplary schematic diagram of an antenna configuration during SRS transmission according to the embodiment of the present application. As shown in fig. 34, when the first port 3003A of the ninth switch 3003 is connected to the fourth port 3003D of the ninth switch 3003, the controller 3003 controls the second port 3004B of the tenth switch 3004 and the second port 3003B of the ninth switch 3003 to be connected to the third port 3004C of the tenth switch 3004 and the third port 3003C of the ninth switch 3003, respectively; or the second port 3004B of the tenth switch 3004 is connected to the fifth port 3004E of the tenth switch 3004; or the second port 3004B of the tenth switch 3004 and the second port 3005B of the eleventh switch 3005 are controlled to be connected to the fourth port 3004D of the tenth switch 3004 and the third port 3005C of the eleventh switch 3005, respectively; or the second port 3004B of the tenth switch 3004 and the first port 3006A of the twelfth switch 3006 are controlled to be connected to the sixth port 3004F of the tenth switch 3004 and the third port 3006C of the twelfth switch 3006, respectively.

In this embodiment, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the second antenna 3008 through the ninth switch 3003, and the LTE signal received by the second antenna 3008 enters the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 through the ninth switch 3003.

SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the first antenna 3007 via the tenth switch 3004 and the ninth switch 3003; SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the third antenna 3009 via the ninth switch 3003; SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the fourth antenna 3010 via the tenth switch 3004 and the eleventh switch 3005; the SRS output from the third port 3001C of the radio frequency transceiver 3001 is transmitted on the fourth antenna 3010 via the tenth switch 3004 and the twelfth switch 3006.

It can be appreciated that when the second antenna 3008 is used to transmit and receive LTE signals, SRS output from the third port 3001C of the radio frequency transceiver 3001 can be transmitted on the first antenna 3007, the third antenna 3009, the fourth antenna 3010, or the fifth antenna 3011 in turn. The embodiment of the present application does not limit the order in which SRS is transmitted on the first antenna 3007, the third antenna 3009, the fourth antenna 3010, or the fifth antenna 3011.

It can be understood that, in the connection manner shown in fig. 33 and fig. 34, when SRS is transmitted in turn, the transmission of the LTE signal is not affected, and the LTE signal interruption condition can be avoided. And the SRS round-robin process has short time and small influence on the reception of LTE signals. In this way, the terminal device realizes the coexistence of LTE communication and SRS round trip by changing the connection modes of the sixth switch, the seventh switch and the eighth switch.

When the terminal device performs ENDC communication, connection of the ninth switch 3003, tenth switch 3004, eleventh switch 3005, and twelfth switch 3006 in the radio frequency circuit can be referred to fig. 35 and 36.

Fig. 35 is a schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 35, the first port 3003A and the second port 3003B of the ninth switch 3003 are connected to the third port 3003C and the fourth port 3003D of the ninth switch 3003, respectively; the first port 3004A and the second port 3004B of the tenth switch 3004 are connected to the third port 3004C and the fifth port 3004E of the tenth switch 3004, respectively; the first port 3005A of the eleventh switch 3005 is connected to the third port 3005C of the eleventh switch 3005; the second port 3006B of the twelfth switch 3006 is connected to the third port 3006C of the twelfth switch 3006.

In the embodiment of the present application, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the first antenna 3007 through the ninth switch 3003. LTE signals received by the first antenna 3007 enter the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 via the ninth switch 3003. LTE signals and/or NR signals received by the second antenna 3008 enter the radio frequency transceiver 3001 from the second port 3001B of the radio frequency transceiver 3001 via the ninth switch 3003 and the tenth switch 3004. The NR signal received by the third antenna 3009 enters the rf transceiver 3001 from the third port 3001C of the rf transceiver 3001 via the tenth switch 3004. NR signals received by the fourth antenna 3010 enter the rf transceiver 3001 from the fourth port 3001D of the rf transceiver 3001 via the eleventh switch 3005. NR signals received by the fifth antenna 3011 enter the radio frequency transceiver 3001 from the fifth port 3001E of the radio frequency transceiver 3001 via the twelfth switch 3006.

Fig. 36 is an exemplary schematic diagram of an antenna configuration during ENDC communication according to an embodiment of the present application. As shown in fig. 36, the first port 3003A and the second port 3003B of the ninth switch 3003 are connected to the fourth port 3003D and the third port 3003C of the ninth switch 3003, respectively; the first port 3004A and the second port 3004B of the tenth switch 3004 are connected to the third port 3004C and the fifth port 3004E of the tenth switch 3004, respectively; the first port 3005A of the eleventh switch 3005 is connected to the third port 3005C of the eleventh switch 3005; the second port 3006B of the twelfth switch 3006 is connected to the third port 3006C of the twelfth switch 3006.

In the embodiment of the present application, the LTE signal output by the first port 3001A of the radio frequency transceiver 3001 is transmitted on the second antenna 3008 through the ninth switch 3003. LTE signals received by the second antenna 3008 enter the radio frequency transceiver 3001 from the first port 3001A of the radio frequency transceiver 3001 via the ninth switch 3003. LTE signals and/or NR signals received by the first antenna 3007 enter the radio frequency transceiver 3001 from the second port 3001B of the radio frequency transceiver 3001 via the ninth switch 3003 and the tenth switch 3004. The NR signal received by the third antenna 3009 enters the rf transceiver 3001 from the third port 3001C of the rf transceiver 3001 via the tenth switch 3004. NR signals received by the fourth antenna 3010 enter the rf transceiver 3001 from the fourth port 3001D of the rf transceiver 3001 via the eleventh switch 3005. NR signals received by the fifth antenna 3011 enter the radio frequency transceiver 3001 from the fifth port 3001E of the radio frequency transceiver 3001 via the twelfth switch 3006.

The antenna configuration in the NR communication may refer to the antenna configuration when the NR signal is transmitted and/or received in the ENDC communication, and the connection manner of the ninth switch, the tenth switch, the eleventh switch, and the twelfth switch in the NR communication is similar to the connection manner when the NR signal is transmitted and/or received in the ENDC communication, which is not described herein.

In summary, in the radio frequency circuit shown in fig. 30, the terminal device implements LTE communication, SRS round-robin and ENDC communication by using 5 antennas and changing connection modes of the ninth switch, the tenth switch, the eleventh switch and/or the twelfth switch, so as to implement dual mode functions of SA and NSA. The number of the antennas is reduced, the space occupied by the antennas is reduced, and the volume of the terminal equipment is reduced. The terminal device can also select a proper antenna to transmit the LTE signal, so that the throughput rate is improved. And the transmission of LTE signals is not affected during SRS round trip or NR communication.

The embodiment of the application also provides electronic equipment, wherein the electronic equipment comprises the radio frequency circuit, and the radio frequency circuit is used for transmitting and receiving the first signal and/or the second signal; the first signal is an LTE signal, and the second signal is an NR signal.

The electronic device may comprise a terminal device. The terminal device may be a mobile phone, a tablet (tablet personal computer), a laptop (laptop computer), a personal digital assistant (personal digitalassistant, PDA), a mobile internet device (mobile internet device, MID) or a wearable device (PDA), etc.

The beneficial effects of the electronic device provided in the embodiment of the present application can be seen from the beneficial effects brought by the radio frequency circuit, and are not described herein again.

The foregoing embodiments, structural schematic diagrams or simulation schematic diagrams are only illustrative of the technical solutions of the present application, and the dimensional proportion thereof does not limit the scope of protection of the technical solutions, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the foregoing embodiments should be included in the scope of protection of the technical solutions.

Claims

1. A radio frequency circuit, comprising: the device comprises a radio frequency transceiver, a controller, a switch unit, a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna;

the radio frequency transceiver comprises a first port, a second port, a third port, a fourth port and a fifth port, wherein the first port is used for transmitting and receiving a first signal, the second port is used for receiving a second signal and the first signal, the third port is used for transmitting and receiving the second signal, and the fourth port and the fifth port are used for receiving the second signal;

the switch unit comprises a ninth switch, a tenth switch, an eleventh switch and a twelfth switch, wherein the ninth switch is a double-pole double-throw switch, the tenth switch is a double-pole four-throw switch, and the eleventh switch and the twelfth switch are both single-pole double-throw switches;

The ninth switch includes a sixth port, an eleventh port, a twelfth port, and a twenty-fifth port;

the tenth switch includes a seventh port, an eighth port, a thirteenth port, a twenty-sixth port, a twenty-seventh port, and a twenty-eighth port;

the eleventh switch includes a ninth port, a fourteenth port, and a twenty-ninth port;

the twelfth switch includes a tenth port, a fifteenth port, and a thirty-th port;

the twenty-fifth port is connected with the twenty-sixth port, the twenty-seventh port is connected with the twenty-ninth port, and the twenty-eighth port is connected with the thirty-eighth port;

the first port is connected with the sixth port, the second port is connected with the seventh port, the third port is connected with the eighth port, the fourth port is connected with the ninth port, and the fifth port is connected with the tenth port;

the eleventh port is connected with the first antenna, the twelfth port is connected with the second antenna, the thirteenth port is connected with the third antenna, the fourteenth port is connected with the fourth antenna, and the fifteenth port is connected with the fifth antenna;

The first antenna is used for transmitting and receiving the first signal, and the second antenna is used for receiving the first signal and the second signal; or the first antenna is used for receiving the first signal and the second signal, and the second antenna is used for transmitting and receiving the first signal;

any one of the third antenna, the fourth antenna and the fifth antenna is used for transmitting the second signal, and the third antenna, the fourth antenna and the fifth antenna are all used for receiving the second signal;

the ninth switch, the tenth switch, the eleventh switch and the twelfth switch are all connected with the controller;

the controller is configured to control the sixth port to be connected to the eleventh port, the twenty-fifth port to be connected to the twelfth port, the seventh port to be connected to the twenty-sixth port, the ninth port to be connected to the fourteenth port, the eighth port to be connected to the thirteenth port, the tenth port to be connected to the fifteenth port, such that the first antenna is configured to transmit and receive the first signal, the second antenna is configured to receive the first signal and/or the second signal, any one of the third antenna, the fourth antenna, and the fifth antenna is configured to transmit the second signal, and the third antenna, the fourth antenna, and the fifth antenna are configured to receive the second signal;

Or, the controller is configured to control the sixth port to be connected to the twelfth port, the twenty-fifth port to be connected to the eleventh port, the seventh port to be connected to the twenty-sixth port, the ninth port to be connected to the fourteenth port, the eighth port to be connected to the thirteenth port, the tenth port to be connected to the fifteenth port, so that the first antenna is configured to receive the first signal and/or the second signal, the second antenna is configured to transmit and receive the first signal, any one of the third antenna, the fourth antenna, and the fifth antenna is configured to transmit the second signal, and the third antenna, the fourth antenna, and the fifth antenna are configured to receive the second signal; the first signal is a Long Term Evolution (LTE) signal, and the second signal is a new air interface (NR) signal;

the third port is further configured to transmit SRS;

the controller is further configured to control the sixth port and the eleventh port to be connected,

controlling the twenty-fifth port and the twelfth port connection, the eighth port and the twenty-sixth port connection, or the eighth port and the thirteenth port connection, or the eighth port and the twenty-seventh port connection, or the eighth port and the twenty-eighth port connection, such that SRS is transmitted on the second antenna, the third antenna, the fourth antenna, or the fifth antenna when the first antenna is used for transmitting and receiving the first signal, and the twenty-ninth port and the fourteenth port connection when the eighth port and the twenty-seventh port are connected; when the eighth port and the twenty-eighth port are connected, the thirty-fifth port and the fifteenth port are connected;

Or, the controller is further configured to control the twenty-fifth port and the eleventh port to be connected when controlling the sixth port and the twelfth port to be connected, the eighth port and the twenty-sixth port to be connected, or the eighth port and the twenty-seventh port to be connected, or the eighth port and the twenty-eighth port to be connected, such that when the second antenna is used to transmit and receive the first signal, SRS is transmitted on the first antenna, the third antenna, the fourth antenna, or the fifth antenna, and when the eighth port and the twenty-seventh port are connected, the twenty-ninth port and the fourteenth port are connected, and when the eighth port and the twenty-eighth port are connected, the thirty-eighth port and the fifteenth port are connected.

2. A control method applied to the radio frequency circuit of claim 1, the method comprising:

the controller receives first information for indicating to transmit or receive the first signal;

and/or the controller receives second information for indicating to transmit or receive the second signal;

The controller receives third information for indicating to transmit the SRS;

the controller controls the sixth port to be connected with the eleventh port, the twenty-fifth port to be connected with the twelfth port, the seventh port to be connected with the twenty-sixth port to be connected with the ninth port to be connected with the fourteenth port, the eighth port to be connected with the thirteenth port to be connected with the fifteenth port according to the first information and the second information, so that the first antenna is used for transmitting and receiving the first signal, the second antenna is used for receiving the first signal and/or the second signal, any one of the third antenna, the fourth antenna and the fifth antenna is used for transmitting the second signal, and the third antenna, the fourth antenna and the fifth antenna are all used for receiving the second signal;

or the controller controls the sixth port to be connected with the twelfth port according to the first information and the second information, the twenty-fifth port to be connected with the eleventh port to be connected with the twenty-sixth port to be connected with the ninth port to be connected with the fourteenth port, the eighth port to be connected with the thirteenth port to be connected with the fifteenth port, so that the first antenna is used for receiving the first signal and/or the second signal, the second antenna is used for transmitting and receiving the first signal, any one of the third antenna, the fourth antenna and the fifth antenna is used for transmitting the second signal, and all of the third antenna, the fourth antenna and the fifth antenna are used for receiving the second signal;

The controller controls the connection of the sixth port and the eleventh port according to the third information,

controlling the twenty-fifth port and the twelfth port connection, the eighth port and the twenty-sixth port connection, or the eighth port and the thirteenth port connection, or the eighth port and the twenty-seventh port connection, or the eighth port and the twenty-eighth port connection, such that SRS is transmitted on the second antenna, the third antenna, the fourth antenna, or the fifth antenna when the first antenna is used for transmitting and receiving the first signal, the twenty-ninth port and the fourteenth port connection when the eighth port and the twenty-seventh port are connected, and the thirty-fifth port connection when the eighth port and the twenty-eighth port are connected;

or, the controller controls the connection of the sixth port and the twelfth port according to the third information,

controlling the twenty-fifth port and the eleventh port to be connected, the eighth port and the twenty-sixth port to be connected, or the eighth port and the thirteenth port to be connected, or the eighth port and the twenty-seventh port to be connected, such that SRS is transmitted on the first antenna, the third antenna, the fourth antenna, or the fifth antenna when the second antenna is used to transmit and receive a first signal, the twenty-ninth port and the fourteenth port to be connected when the eighth port and the twenty-seventh port are connected, and the thirty-fifth port to be connected when the eighth port and the twenty-eighth port are connected.

3. An electronic device comprising the radio frequency circuit of claim 1 for transmitting and receiving a first signal and/or a second signal; the first signal is an LTE signal, and the second signal is an NR signal.