WO2022078355A1

WO2022078355A1 - Communication system and electronic device

Info

Publication number: WO2022078355A1
Application number: PCT/CN2021/123423
Authority: WO
Inventors: 彭勇
Original assignee: 华为技术有限公司
Priority date: 2020-10-13
Filing date: 2021-10-13
Publication date: 2022-04-21
Also published as: CN114362781A; CN114362781B

Abstract

Embodiments of the present application provide a communication system and an electronic device, capable of decreasing the number of switching devices in a radio frequency pathway, reducing the insertion loss in the radio frequency pathway. The communication system comprises: a multi-path gating unit, the multi-path gating unit comprising a first antenna gating end, a second antenna gating end, a first radio frequency gating end, and a second radio frequency gating end; a first antenna, coupled to the first antenna gating end of the multi-path gating unit; a second antenna, coupled to the second antenna gating end of the multi-path gating unit; a first radio frequency pathway, coupled to the first radio frequency gating end of the multi-path gating unit; a second radio frequency pathway, coupled to the second radio frequency gating end of the multi-path gating unit, at least one of the first radio frequency pathway and the second radio frequency pathway comprising a transmission link; a controller, used for performing antenna backup operations by means of controlling the multi-path gating unit, and performing a sounding reference signal (SRS) polling operation by means of controlling the multi-path gating unit.

Description

Communication Systems and Electronic Equipment

This application claims the priority of the Chinese patent application with the application number 202011092648.8 and the application title "Communication System and Electronic Equipment" filed with the China Patent Office on October 13, 2020, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the field of communication technologies, and in particular, to a communication system and an electronic device.

Background technique

With the development of wireless communication technology, the application scenarios of wireless communication devices are becoming wider and wider, such as vehicle-mounted wireless communication devices, wireless communication devices used on drones, and the like. When a wireless communication device is used in a movable scene, if a collision occurs, the antenna may be damaged. In order to solve the problem of antenna damage, an antenna backup solution has emerged. The antenna backup solution is realized by adding a switch in the radio frequency path. When switching between different antennas, for example, when the main set antenna is damaged, the other antennas are switched to the radio frequency channel originally corresponding to the main set antenna through the switch to ensure the normal transmission of signals. However, since the current radio frequency channel already has a switch for implementing sounding reference signal (Sounding Reference Signal, SRS) rotation, adding an additional switch for implementing antenna backup on this basis will result in a relatively low insertion loss in the channel. big.

SUMMARY OF THE INVENTION

The technical solution of the present application provides a communication system and electronic equipment, which can reduce the number of switching devices in the radio frequency path and reduce the insertion loss in the radio frequency path.

In a first aspect, the technical solution of the present application provides a communication system, comprising: a plurality of first antenna units; at least one second antenna unit; a plurality of radio frequency paths, at least one of the radio frequency paths includes a transmission chain; A gating unit, the multiplexing unit includes a plurality of antenna gating ends and a plurality of radio frequency gating ends, and the multiplexing gating unit is configured to selectively conduct at least one of the antenna gating ends and the radio frequency gating ends At least one of the antenna gating ends are respectively coupled to the first antenna unit and the second antenna unit, and the radio frequency gating ends are respectively coupled to the radio frequency path; in the first state, a plurality of first antenna units receive downlink signals, and a plurality of first antenna units An antenna unit polls and transmits uplink signals; in the second state, at least part of the second antenna units and part of the first antenna units receive signals and receive downlink signals, and at least part of the second antenna units and part of the first antenna units poll and transmit uplink signals . The second antenna unit can be a backup antenna, and the communication system can conveniently perform switching of the backup antenna and antenna switching of the SRS transmission through the multiplexing unit, so as to improve the communication quality, and the insertion loss of the system is small.

With reference to the first aspect, in a possible implementation manner, in the first state, the antenna gate terminals corresponding to the plurality of first antenna units are connected to the radio frequency gate terminal; in the second state, at least part of the The antenna gating terminals corresponding to the two antenna units and part of the first antenna units are connected to the radio frequency gating terminals.

With reference to the first aspect, in a possible implementation manner, the communication system further includes a controller, and the controller is configured to send a control instruction to the multiplexing unit; the multiplexing unit is configured to, in response to the control instruction, At least one of the antenna gate terminals and at least one of the radio frequency gate terminals are selectively turned on. Through the controller, the switching of the backup antenna and the antenna switching of the SRS can be realized through a set of software processes, and the most suitable antenna can be quickly selected according to the state of the system to receive and transmit signals.

With reference to the first aspect, in a possible implementation manner, when at least one of the first antenna units is in an abnormal working state, the second state is entered.

With reference to the first aspect, in a possible implementation manner, the uplink signal is a sounding reference signal SRS.

In conjunction with the first aspect, in a possible implementation, the radio frequency path includes a receive chain.

With reference to the first aspect, in a possible implementation, the multiplexing unit includes a first multiplexing switch and a second multiplexing switch, and the first multiplexing switch is coupled to the second multiplexing switch an on switch, the first multiplexing switch is coupled to at least a portion of a plurality of the first antenna elements and at least one of the second antenna elements, the second multiplexing switch is coupled to a plurality of the first antenna elements One antenna unit and another part of at least one of the second antenna units are beneficial to simplify the structure, reduce insertion loss, and facilitate antenna switching.

With reference to the first aspect, in a possible implementation manner, the first antenna unit includes:

a first antenna, coupled to the first antenna end of the first multiplexing switch;

a second antenna, coupled to the second antenna terminal of the first multiplexer;

a third antenna, coupled to the first antenna end of the second multiplexer;

a fourth antenna, coupled to the second antenna end of the second multiplexing switch;

The third antenna terminal of the first multiplexing switch is coupled to the third radio frequency terminal of the second multiplexing switch;

The first multiplexing switch further includes a fourth antenna terminal, and the second antenna unit is coupled to the fourth antenna terminal of the first multiplexing switch;

The RF path includes:

a first radio frequency path, coupled to the first radio frequency end of the first multiplexer;

a second radio frequency path, coupled to the second radio frequency end of the first multiplexer;

a third radio frequency path, coupled to the first radio frequency end of the second multiplexing switch;

The fourth radio frequency path is coupled to the second radio frequency end of the second multiplexer switch.

With reference to the first aspect, in a possible implementation manner, the first radio frequency path is a transceiver path, and the second radio frequency path, the third radio frequency path, and the fourth radio frequency path are receive links;

Alternatively, the second radio frequency channel is a transceiver channel, and the first radio frequency channel, the third radio frequency channel and the fourth radio frequency head channel are receiving links.

The first radio frequency path includes a first switch, the first switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the antenna terminal of the first switch is coupled to the first radio frequency terminal of the first multiplexer switch, The first radio frequency end of the first switch is coupled to the transmitting port through the filter and the power amplifier, and the second radio frequency end of the first switch is coupled to the first receiving port through the filter and the low noise amplifier;

The second radio frequency path includes a second switch, the second switch includes an antenna terminal and a first radio terminal, the antenna terminal of the second switch is coupled to the second radio frequency terminal of the first multiplexing switch, and the second switch The first radio frequency end is coupled to the second receiving port through a filter and a low noise amplifier;

The third radio frequency path includes a third switch, the third switch includes an antenna terminal and a first radio frequency terminal, the antenna terminal of the third switch is coupled to the first radio frequency terminal of the second multiplexer switch, and the third switch The first radio frequency end is coupled to the third receiving port through a filter and a low noise amplifier;

The fourth radio frequency path includes a fourth switch, and the fourth switch includes an antenna terminal and a first radio frequency terminal. The antenna terminal of the fourth switch is coupled to the second radio frequency terminal of the second multiplexing switch. The first radio frequency end is coupled to the fourth receiving port through a filter and a low noise amplifier.

With reference to the first aspect, in a possible implementation manner, one of the first radio frequency path and the second radio frequency path is the first transceiver path, and the first radio frequency path, the second radio frequency path, the third radio frequency path and the first radio frequency path Among the four radio frequency paths, one of the first transceiver paths is the second transceiver path, and among the first radio frequency path, the second radio frequency path, the third radio frequency path and the fourth radio frequency path, except for the first transceiver path and the second radio frequency path Both of the transmit and receive paths are receive links.

With reference to the first aspect, in a possible implementation manner, the first radio frequency path and the second radio frequency path are transceiver paths, and the third radio frequency path and the fourth radio frequency path are receive links;

The first radio frequency path includes a first switch, the first switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the antenna terminal of the first switch is coupled to the first radio frequency terminal of the first multiplexer switch, The first radio frequency end of the first switch is coupled to the first transmitting port through the filter and the power amplifier, and the second radio frequency end of the first switch is coupled to the first receiving port through the filter and the low noise amplifier;

The second radio frequency path includes a second switch, the second switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the antenna terminal of the second switch is coupled to the second radio frequency terminal of the first multiplexer switch, The first radio frequency end of the second switch is coupled to the second transmit port through the filter and the power amplifier, and the second radio frequency end of the second switch is coupled to the second receive port through the filter and the low noise amplifier;

With reference to the first aspect, in a possible implementation manner, the first radio frequency path and the third radio frequency path are transceiver paths, and the second radio frequency path and the fourth radio frequency path are receive links;

The third radio frequency path includes a third switch, the third switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the antenna terminal of the third switch is coupled to the first radio frequency terminal of the second multiplexing switch, The first radio frequency end of the third switch is coupled to the second transmit port through the filter and the power amplifier, and the second radio frequency end of the third switch is coupled to the third receive port through the filter and the low noise amplifier;

In a second aspect, an electronic device is provided, including the communication system of the first aspect.

Combining the first aspect and the second aspect, in a possible implementation manner, the electronic device further includes: a housing, the first antenna unit is a part of the housing, and the second antenna unit is accommodated in the housing.

In a third aspect, the technical solution of the present application provides a communication system, comprising: a multiplex gating unit, the multiplex gating unit includes a first antenna gating end, a second antenna gating end, a first radio frequency gating end, and The second radio frequency gating terminal, the multiplex gating unit is used to connect any radio frequency gating terminal and any antenna gating terminal; the first antenna is coupled to the first antenna gating terminal of the multiplex gating unit; Two antennas are coupled to the second antenna gating terminal of the multiplexing unit; the first radio frequency path is coupled to the first radio frequency gating terminal of the multiplexing unit; the second radio frequency path is coupled to the multiplexing unit The second radio frequency gating end, at least one of the first radio frequency path and the second radio frequency path includes a transmission chain; the controller is used to realize the antenna backup operation through the control of the multiplex gating unit, and through the multi-path gating unit The control of the channel gating unit realizes the sounding reference signal SRS round-robin operation. It can easily realize SRS polling and switching of backup antennas. Because the same controller is used to control the same multiplexing unit to realize the two functions of antenna backup and SRS rotation, it is different from using an independent switch to realize the antenna. Compared with the SRS rotation function, backup reduces the number of switching devices in the RF path, thereby reducing insertion loss in the RF path, simplifying the complexity of layout and wiring, improving antenna performance, and reducing costs. In addition, Since both the antenna backup and the SRS rotation are implemented by the same multiplexing unit and controlled by the same controller, the software can realize the decoupling of the two processes of the antenna backup and the SRS rotation.

In a fourth aspect, the technical solution of the present application further provides a communication system, comprising: a multiplex gating unit, the multiplex gating unit includes a first antenna gating end, a second antenna gating end, and a first radio frequency gating end and the second radio frequency gating end, the multiplex gating unit is used to communicate between any radio frequency gating end and any antenna gating end; the first antenna is coupled to the first antenna gating end of the multiplex gating unit; The second antenna is coupled to the second antenna gating terminal of the multiplex gating unit; the first radio frequency path is coupled to the first radio frequency gating terminal of the multiplex gating unit; the second radio frequency path is coupled to the multiplex gating unit The second radio frequency gating end of the unit, at least one of the first radio frequency path and the second radio frequency path includes a transmission chain; the controller is used to send the first instruction and the second instruction to the multiplex gating unit, and the multiplexer The gating unit is configured to perform an antenna backup operation in response to the first instruction, and the multiplex gating unit is further configured to perform a sounding reference signal SRS round-robin operation in response to the second instruction. It can easily realize SRS polling and switching of backup antennas. Because the same controller is used to control the same multiplexing unit to realize the two functions of antenna backup and SRS rotation, it is different from using an independent switch to realize antennas respectively. Compared with the SRS rotation function, backup reduces the number of switching devices in the RF path, thereby reducing insertion loss in the RF path, simplifying the complexity of layout and wiring, improving antenna performance, and reducing costs. In addition, Since both the antenna backup and the SRS rotation are implemented by the same multiplexing unit and controlled by the same controller, the software can realize the decoupling of the two processes of the antenna backup and the SRS rotation.

In combination with the third aspect and the fourth aspect, in a possible implementation, the multiplexing unit includes a first multiplexing switch and a second multiplexing switch; the first multiplexing switch includes a first multiplexing switch An antenna end, a second antenna end, a third antenna end, a first radio frequency end and a second radio frequency end; the second multiplexing switch includes a first antenna end, a second antenna end, a first radio frequency end, and a second radio frequency end and the third radio frequency terminal; the first antenna is coupled to the first antenna terminal of the first multiplexing switch; the second antenna is coupled to the second antenna terminal of the first multiplexing switch; the third antenna is coupled to the The first antenna terminal of the second multiplexer switch; the fourth antenna is coupled to the second antenna terminal of the second multiplexer switch; the third antenna terminal of the first multiplexer switch is coupled to the second multiplexer switch the third radio frequency end of the gating switch; the first radio frequency path is coupled to the first radio frequency end of the first multiplexing switch; the second radio frequency path is coupled to the second radio frequency end of the first multiplexing switch; the communication system further It includes: a third radio frequency path, which is coupled to the first radio frequency terminal of the second multiplexing switch; and a fourth radio frequency path, which is coupled to the second radio frequency terminal of the second multiplexing switch. The first multiplexing switch and the second multiplexing switch form a multiplexing unit by cascading, so that the first radio frequency channel can pass through the first multiplexing switch and the second multiplexing switch. It can be connected to any antenna. For example, the function of a four-pole four-throw switch can be realized through the cooperation of two double-pole three-throw switches, that is, the function of the antenna switch can be realized at a limited cost. At the same time, this kind of The switch combination is also compatible with antenna backup and SRS rotation functions controlled by the same controller.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, the first radio frequency path is a transceiver path, and the second radio frequency path, the third radio frequency path, and the fourth radio frequency path are receiving links; or, the second radio frequency path is a receiving chain; The channel is a transceiver channel, and the first radio frequency channel, the third radio frequency channel and the fourth radio frequency head channel are the receiving link. That is, it can be compatible with the control of the same controller to realize the antenna backup and SRS rotation functions under the 1T4R system.

Combining the third aspect and the fourth aspect, in a possible implementation manner, the first radio frequency path is a transceiver path, and the second radio frequency path, the third radio frequency path and the fourth radio frequency path are receiving links; the first radio frequency path includes A first switch. The first switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal. The antenna terminal of the first switch is coupled to the first radio frequency terminal of the first multiplexer switch. The first radio frequency terminal is coupled to the transmitting port through a filter and a power amplifier, and the second radio frequency terminal of the first switch is coupled to the first receiving port through a filter and a low noise amplifier; the second radio frequency path includes a second switch, and the second radio frequency path includes a second switch. The switch includes an antenna terminal and a first radio frequency terminal, the antenna terminal of the second switch switch is coupled to the second radio frequency terminal of the first multiplexing switch, and the first radio frequency terminal of the second switch switch is coupled through a filter and a low noise amplifier at the second receiving port; the third radio frequency path includes a third switch, the third switch includes an antenna terminal and a first radio terminal, and the antenna terminal of the third switch is coupled to the first radio frequency terminal of the second multiplexing switch , the first radio frequency end of the third switch is coupled to the third receiving port through a filter and a low noise amplifier; the fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna end and a first radio frequency end, and the fourth switch The antenna end of the switch is coupled to the second radio frequency end of the second multiplexing switch, and the first radio frequency end of the fourth switch is coupled to the fourth receiving port through a filter and a low noise amplifier.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, one of the first radio frequency path and the second radio frequency path is the first transceiver path, the first radio frequency path, the second radio frequency path, the third radio frequency path, and the third radio frequency path. One of the radio frequency channel and the fourth radio frequency channel except the first transceiver channel is the second transceiver channel, and the first radio frequency channel, the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel except the first transceiver channel. Both the path and the second transceiver path are receive links. That is, it can be compatible with the control of the same controller to realize the antenna backup and SRS rotation functions under the 2T4R system.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, the first radio frequency path and the second radio frequency path are transceiver paths, and the third radio frequency path and the fourth radio frequency path are receiving links; the first radio frequency path includes A first switch. The first switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal. The antenna terminal of the first switch is coupled to the first radio frequency terminal of the first multiplexer switch. The first radio frequency terminal is coupled to the first transmitting port through a filter and a power amplifier, the second radio frequency terminal of the first switch is coupled to the first receiving port through a filter and a low noise amplifier; the second radio frequency path includes a second switch, The second switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal. The antenna terminal of the second switch is coupled to the second radio frequency terminal of the first multiplexer switch, and the first radio frequency terminal of the second switch switches through the The filter and the power amplifier are coupled to the second transmit port, and the second radio frequency end of the second switch is coupled to the second receive port through the filter and the low noise amplifier; the third radio frequency path includes a third switch, and the third switch includes The antenna terminal and the first radio frequency terminal, the antenna terminal of the third switch is coupled to the first radio frequency terminal of the second multiplexing switch, and the first radio frequency terminal of the third switch is coupled to the third switch through a filter and a low noise amplifier. a receiving port; the fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna terminal and a first radio frequency terminal, the antenna terminal of the fourth switch is coupled to the second radio frequency terminal of the second multiplexing switch, and the fourth switch includes an antenna terminal and a first radio frequency terminal. The first radio frequency end of the switch is coupled to the fourth receiving port through the filter and the low noise amplifier.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, the first radio frequency path and the third radio frequency path are transceiver paths, and the second radio frequency path and the fourth radio frequency path are receiving links; the first radio frequency path includes A first switch. The first switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal. The antenna terminal of the first switch is coupled to the first radio frequency terminal of the first multiplexer switch. The first radio frequency terminal is coupled to the first transmitting port through a filter and a power amplifier, the second radio frequency terminal of the first switch is coupled to the first receiving port through a filter and a low noise amplifier; the second radio frequency path includes a second switch, The second switch includes an antenna terminal and a first radio frequency terminal, the antenna terminal of the second switch is coupled to the second radio frequency terminal of the first multiplexer switch, and the first radio frequency terminal of the second switch is passed through a filter and low noise The amplifier is coupled to the second receiving port; the third radio frequency path includes a third switch, the third switch includes an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the antenna terminal of the third switch switch is coupled to the second multiplexer The first radio frequency end of the switch is connected, the first radio frequency end of the third switch is coupled to the second transmitting port through a filter and a power amplifier, and the second radio frequency end of the third switch is coupled to the third transmission port through a filter and a low noise amplifier. a receiving port; the fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna terminal and a first radio frequency terminal, the antenna terminal of the fourth switch is coupled to the second radio frequency terminal of the second multiplexing switch, and the fourth switch includes an antenna terminal and a first radio frequency terminal. The first radio frequency end of the switch is coupled to the fourth receiving port through the filter and the low noise amplifier.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, the communication system further includes: a fifth antenna, the first multiplexer switch further includes a fourth antenna terminal, and the fifth antenna is coupled to the first multiplexer The fourth antenna terminal of the gating switch. When the main set antenna works abnormally, the fifth antenna can be switched to be used as the main set antenna, so that the service data transmission of other antennas will not be affected.

In combination with the third aspect and the fourth aspect, in a possible implementation manner, the communication system further includes: a housing, the first antenna, the second antenna, the third antenna and the fourth antenna are all part of the housing, the fifth antenna The antenna is accommodated in the housing. The four antennas mainly used for communication are arranged on the casing to provide better radiation effect, and the fifth antenna as a backup antenna is arranged as an antenna inside the casing to save space and simplify the layout.

In a fifth aspect, the technical solution of the present application further provides a communication system control method for the above-mentioned communication system. The method includes: in an initialization stage, selecting the first radio frequency gating terminal and the first antenna in the multiplex gating unit. Connecting between the pass ends, so that the second radio frequency gating end and the second antenna gating end in the multiplex gating unit are connected; the first radio frequency path is the main radio frequency path, and the first antenna is the main set antenna; The second radio frequency channel is the main radio frequency channel, and the second antenna is the main set antenna; the main radio frequency channel includes the transmit chain; the working status of each antenna is periodically obtained, and when the main set antenna is in an abnormal working state, the antenna backup operation is performed, and the antenna backup operation is performed. The operation includes: controlling the multiplexing unit to communicate between the main radio frequency channel and the backup antenna, and the backup antenna is an antenna other than the main set antenna; periodically performing the SRS rotation operation, and the SRS rotation operation includes: controlling the multiplexing The unit rotates the SRS through different antennas. It can easily realize SRS polling and switching of backup antennas. Because the same controller is used to control the same multiplexing unit to realize the two functions of antenna backup and SRS rotation, it is different from using an independent switch to realize the antenna. Compared with the SRS rotation function, backup reduces the number of switching devices in the RF path, thereby reducing insertion loss in the RF path, simplifying the complexity of layout and wiring, improving antenna performance, and reducing costs. In addition, Since both the antenna backup and the SRS rotation are implemented by the same multiplexing unit and controlled by the same controller, the software can realize the decoupling of the two processes of the antenna backup and the SRS rotation.

In a possible implementation manner, when the main antenna is in an abnormal working state, the SRS polling operation is stopped to avoid problems caused by the inability of the main antenna to transmit SRS.

In a possible implementation, when the main antenna is in a normal working state, the SRS round-robin operation is periodically performed according to the preset initial logic; when the main antenna is in an abnormal working state, the SRS round is periodically executed according to the preset standby logic On the basis of avoiding the problem caused by the inability of the main antenna to transmit the SRS, the normal SRS rotation is guaranteed.

In a sixth aspect, the technical solution of the present application further provides a controller, including: a processor and a memory, where the memory is used to store at least one instruction, and the instruction is loaded and executed by the processor to implement the above communication system control method.

In a seventh aspect, the technical solution of the present application further provides an electronic device, including the above communication system.

In an eighth aspect, the technical solution of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when it runs on a computer, the computer executes the above communication system control method.

Description of drawings

Fig. 1 is a structural block diagram of a communication system of an electronic device;

Fig. 2 is a kind of structural representation of the communication system with SRS rotation function;

3a is a schematic structural diagram of a communication system in an embodiment of the application;

3b is a schematic structural diagram of another communication system in an embodiment of the application;

3c is a schematic structural diagram of another communication system in an embodiment of the present application;

FIG. 4 is a schematic flowchart of a communication system control method in an embodiment of the present application;

Fig. 5 is a kind of schematic diagram of the communication system in the initialization state in Fig. 3b;

Fig. 6 is the state schematic diagram when the communication system in Fig. 3b transmits the signal through the first antenna;

Fig. 7 is the state schematic diagram when the communication system in Fig. 3b transmits the signal through the second antenna;

Fig. 8 is the state schematic diagram when the communication system in Fig. 3b transmits the signal through the third antenna;

Fig. 9 is the state schematic diagram when the communication system in Fig. 3b transmits the signal through the fourth antenna;

10 is a schematic structural diagram of another communication system in an embodiment of the application;

FIG. 11 is a schematic diagram of the communication system in FIG. 10 in a receiving state;

FIG. 12 is a schematic diagram of the state when the communication system in FIG. 10 transmits signals through the first antenna and the second antenna;

FIG. 13 is a schematic diagram of the state when the communication system in FIG. 10 transmits a signal through a third antenna;

FIG. 14 is a schematic diagram of the state when the communication system in FIG. 10 transmits a signal through the fourth antenna;

15 is a schematic structural diagram of another communication system in an embodiment of the application;

FIG. 16 is a schematic diagram of the communication system in FIG. 15 in a receiving state;

FIG. 17 is a schematic diagram of the state when the communication system in FIG. 15 transmits signals through the first antenna and the third antenna;

FIG. 18 is a schematic diagram of the state of the communication system in FIG. 15 when transmitting signals through the second antenna;

FIG. 19 is a schematic diagram of the state when the communication system in FIG. 15 transmits a signal through the fourth antenna;

20 is a schematic flowchart of another communication system control method in an embodiment of the present application;

FIG. 21 is a schematic flowchart of another communication system control method according to an embodiment of the present application.

Detailed ways

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner. It should be understood that, in the description of the embodiments of the present application, "coupling" includes direct coupling or indirect coupling, and "connection" includes direct connection or indirect connection.

First, the electronic devices involved in this application are introduced. The electronic devices involved in this application may be mobile phones, tablet computers, personal computers (PCs), personal digital assistants (PDAs), smart watches, netbooks, Wearable electronic devices, augmented reality (AR) devices, virtual reality (VR) devices, in-vehicle devices, drone devices, smart cars, smart speakers, robots, smart glasses, etc. The electronic device includes a communication system for wirelessly communicating with another electronic device.

As shown in FIG. 1, FIG. 1 is a structural block diagram of a communication system of an electronic device. The electronic device may include a processor 100, a filter 200, a low noise amplifier (Low Noise Amplifier, LNA) 300, a power amplifier (Power Amplifier, PA) 400, switch 500 and antenna 601.

The processor 100 may include one or more processing units, for example, the processor 100 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), neural-network processing unit (NPU), controller, video codec, digital signal processor (DSP), baseband, and/or radio frequency integrated circuit Wait. The controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.

A memory may be provided in the processor 100 for storing instructions and data. In some embodiments, the memory in the processor 100 includes cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 100 . If the processor 100 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided, and the waiting time of the processor 100 is reduced, thereby increasing the efficiency of the system. In some embodiments, the memory may also be located outside the processor and coupled to the processor 100 .

The baseband (Baseband, BB) 101 is used to synthesize the baseband signal to be transmitted, or/and to decode the received baseband signal. Specifically, when transmitting, the baseband encodes a voice or other data signal into a baseband signal (baseband code) for transmission; when receiving, decodes the received baseband signal (baseband code) into a voice or other data signal. Baseband 101 may include components such as encoders, decoders, and baseband processors. The encoder is used to synthesize the baseband signal to be transmitted, and the decoder is used to decode the received baseband signal. The baseband processor can be a microprocessor (MCU), and the baseband processor can be used to control the encoder and the decoder, for example, the baseband processor can be used to complete the scheduling of encoding and decoding, the communication between the encoder and the decoder, And peripheral drivers (you can enable components other than baseband by sending enable signals to components other than baseband) and so on.

A radio frequency integrated circuit (Radio Frequency Integrated Circuit, RFIC) 102 is used to process the baseband signal to form a transmit (Transmit, TX) signal, and transmit the transmit signal to the power amplifier 400 for amplification; or/and, the radio frequency integrated circuit is used to The received (Receive, RX) signal is processed to form a baseband signal, and the formed baseband signal is sent to the baseband 101 for decoding.

The processor 100 may frequency modulate the signal according to a mobile communication technology or a wireless communication technology. Mobile communication technologies may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), bandwidth code division Multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), emerging wireless communication technology (also known as It is the fifth generation mobile communication technology, English: 5th generation mobile networks or 5th generation wireless systems, 5th-Generation, 5th-Generation New Radio, referred to as 5G, 5G technology or 5G NR) and so on. Wireless communication technologies may include wireless local area networks (WLAN) (eg, wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite system (GNSS) , frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and so on.

The processor 100 may include at least one baseband 101 and at least one radio frequency integrated circuit 102 . In some embodiments, each baseband 101 corresponds to a radio frequency integrated circuit to frequency modulate the signal according to one or more communication technologies. For example, the first baseband and the first radio frequency integrated circuit frequency-modulate the signal according to the 5G technology, the second baseband and the second radio frequency integrated circuit frequency-modulate the signal according to the 4G technology, and the third baseband and the third radio frequency integrated circuit according to the Wi-Fi technology The signal is frequency-modulated, the fourth baseband and the fourth radio frequency integrated circuit frequency-modulate the signal according to the Bluetooth technology, and so on. Alternatively, the first baseband and the first radio frequency integrated circuit may frequency-modulate the signal according to the 4G technology and the 5G technology at the same time, the second baseband and the second radio frequency integrated circuit may frequency-modulate the signal according to the Wi-Fi technology, and so on. In some embodiments, one baseband may also correspond to multiple radio frequency integrated circuits to improve integration.

In some embodiments, baseband 101 and radio frequency integrated circuit 102 may be integrated with other components of processor 100 in one integrated circuit. In some embodiments, the baseband 101 and the radio frequency integrated circuit 102 may each be an independent device independent of the processor 100 . In some embodiments, a baseband 101 and a radio frequency integrated circuit 102 may be integrated into a separate device from the processor 100 . In some embodiments, the baseband 101 and the radio frequency integrated circuit 102 are integrated in different integrated circuits, and the baseband 101 and the radio frequency integrated circuit 102 are packaged together, for example, in a system on a chip (System on a Chip, SOC for short).

In the processor 100, different processing units may be independent devices, or may be integrated in one or more integrated circuits.

The antenna circuit 600 is used to transmit and receive electromagnetic wave signals (radio frequency signals). The antenna circuit 600 may include multiple antennas 601 or multiple sets of antennas (the multiple sets of antennas include more than two antennas), and each antenna 601 or multiple sets of antennas may be used to cover a single or multiple communication frequency bands. The plurality of antennas may be one or more of multi-frequency antennas, array antennas or on-chip antennas.

The processor 100 is coupled to the antenna circuit 600 to perform various functions associated with transmitting and receiving radio frequency signals. For example, when the electronic device transmits a signal, the baseband 101 synthesizes the data (digital signal) to be transmitted into the baseband signal to be transmitted, the baseband signal is converted into a transmission signal (radio frequency signal) by the radio frequency integrated circuit 102, and the transmission signal is processed by the power amplifier 400. Amplification, the amplified output signal output by the power amplifier 400 is transmitted to the switch 500 and transmitted through the antenna circuit 600 . The path through which the transmission signal is sent by the processor 100 to the switch 500 is a transmission link (or referred to as a transmission path). When the electronic device needs to receive a signal, the antenna circuit 600 sends the received signal (radio frequency signal) to the switch 500, the switch 500 sends the radio frequency signal to the radio frequency integrated circuit 102, and the radio frequency integrated circuit 102 processes the radio frequency signal into a baseband signal and sends it To the baseband 101, the baseband 101 converts the processed baseband signal into data and sends it to the corresponding application processor. The path through which the radio frequency signal is sent from the switch 500 to the processor 100 is a receive link (or referred to as a receive path). The port connected to the transmit link in the processor 100 is the transmit port TX, and the port connected to the receive link in the processor 100 is the receive port RX.

The toggle switch 500 may be configured to selectively electrically connect the antenna circuit 600 to the transmit link or the receive link. In some embodiments, toggle switch 500 may include multiple switches. The toggle switch 500 may also be configured to provide additional functionality, including filtering and/duplexing of signals.

In other embodiments of the present application, the communication system of the electronic device may include more or less components than shown, or some components are combined, or some components are separated, or different components are arranged. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In addition, Figure 1 only shows one antenna in the electronic device. In fact, usually at least two antennas are set in the electronic device, for example, four antennas are set, and the four antennas can simultaneously receive the downlink transmitted by the base station through different receiving links. Signal, that is, 4 transmission paths can be established between the base station and the electronic equipment. When wireless communication is realized between the electronic equipment and the base station, in order to enable the base station to control the data transmission on different transmission paths, in order to achieve more efficient downlink data For transmission, it is necessary to obtain the channel state of each transmission path. The acquisition method can be to send the sounding reference signal SRS to the base station through the antenna, that is, the SRS is used to enable the base station to obtain the channel state of the transmission path corresponding to the antenna; The number of links is small. For example, four antennas have only one or two transmit chains. In this case, SRS rotation is required, that is, the transmit chains are switched to each antenna by switching the switch, so that each antenna SRS is sent in turn once, although only single or dual antennas transmit at the same time, but as long as all antennas have sent SRS once, the base station can obtain the channel status of the transmission paths corresponding to the four antennas.

As shown in FIG. 2 , FIG. 2 is a schematic structural diagram of a communication system with an SRS rotation function. The communication system includes a first gating switch S1 and a plurality of second gating switches S2 . The first gating switch S1 is used to implement antenna backup. For example, among the four antennas A0, A1, A2, and A3, A0 is the main set antenna. When sending service data through the antenna, A0 is connected to the radio frequency transmission port TX. When receiving service data through the antenna, A1 is connected to the radio frequency receiving port RX1, A1 is connected to the radio frequency receiving port RX0, A2 is connected to the radio frequency receiving port RX2, and A3 is connected to the radio frequency receiving port RX3. That is to say, TX and RX1 are connected to the main Set the port corresponding to the antenna, when the detection unit 02 detects that the antenna A0 is abnormal, the antenna backup control unit 01 will control the first gating switch S1, change the gating state, for example, change the TX to be connected to A1 or other can work normally When the TX is connected to A1, it is equivalent to changing the A1 to the main antenna, that is, the antenna backup is realized, and the normal operation of the main antenna is ensured; the second gating switch S2 is used to realize the SRS rotation, and the SRS The polling control unit (not shown in FIG. 2 ) controls the second gating switch S2 to change the gating state of the second gating switch S2, so that the TX can be connected to each antenna in turn to realize the SRS polling. In addition, each antenna is also correspondingly provided with a third gating switch S3 for cooperating with the second gating switch S2 and the first gating switch S1 to switch the antenna between the transmitting port and the receiving port. Since the antenna backup and SRS rotation have their own corresponding gating switches, the number of switching devices on the RF path is large, the antenna circuit layout and wiring complexity is high, the insertion loss is large, and the power consumption increases.

In order to solve the above problem, in a communication system provided by an embodiment of the present application, as shown in FIG. 3a, the communication system includes: a multiplex gating unit M10, and the multiplex gating unit M10 includes at least two antenna gating ends and at least The two radio frequency gating ends specifically include a first antenna gating end P01, a second antenna gating end P02, a first radio frequency gating end T01 and a second radio frequency gating end T02, and the multiplex gating unit M10 is used to enable the Any radio frequency gating terminal and any antenna gating terminal are connected; the first antenna A1 is coupled to the first antenna gating terminal P01 of the multiplex gating unit M10; the second antenna A2 is coupled to the multiplex gating unit M10 The second antenna gating terminal P02; the first radio frequency path 10 is coupled to the first radio frequency gating terminal T01 of the multiplex gating unit M10; the second radio frequency path 20 is coupled to the second radio frequency of the multiplex gating unit M10 The gate terminal T02, at least one of the first radio frequency path 10 and the second radio frequency path 20 includes a transmit chain, for example, the first radio frequency path 10 includes a transmit chain, and the second radio frequency path 20 includes a receive chain; the controller 1 , which is used to realize the antenna backup operation by controlling the multiplex gating unit M10, and realize the sounding reference signal SRS rotation operation through the control of the multiplex gating unit M10. In a possible implementation, the controller 1 is configured to send a first instruction and a second instruction to the multiplexing unit M10, and the multiplexing unit M10 is configured to perform an antenna backup operation in response to the first instruction, and the multiplexing unit M10 is configured to perform an antenna backup operation in response to the first instruction. The gating unit M10 is further configured to perform the SRS round-robin operation in response to the second instruction.

Before the antenna backup operation is performed, the first radio frequency gating terminal T01 of the multiplex gating unit M10 is connected to other antennas except the backup antenna. For example, the second antenna A2 is a backup antenna. In the working state, the multiplex gating unit M10 enables communication between the first antenna gating terminal P01 and the first radio frequency gating terminal T01, and the multiplexing gating unit M10 enables the second antenna gating terminal P02 and the second radio frequency gating terminal to be selected. The communication ends T02 are connected, and the first radio frequency channel 10 is the main radio frequency channel, that is, the first antenna A1 is the main set antenna at this time, and the other antennas are diversity antennas or multiple-input multiple-output (Multiple-Input Multiple-Out-put, MIMO, MIMO). ) antenna, the main radio frequency path is registered with the remote end such as the base station through the main set antenna, so that the electronic equipment can realize the wireless communication function, the main radio frequency path usually has the function of transmitting and receiving, for example, the main radio frequency path includes the transmission chain and The receiving chain can be switched between the transmitting chain and the receiving chain. For example, the first radio frequency path 10 includes a first switch M01, and the first switch M01 includes an antenna terminal PM1, a first radio frequency terminal TM11 and a second radio frequency terminal. TM12, the antenna terminal PM1 of the first switch M01 is coupled to the first radio frequency gating terminal T01 of the multiplex gating unit M10, and the first radio frequency terminal TM11 of the first switch M01 is coupled to the transmitter through the filter 200 and the power amplifier 400. Port TX, the second radio frequency terminal TM22 of the first switch M01 is coupled to the first receiving port RX1 through the filter 200 and the low noise amplifier 300. In addition, the first switch M01 may also include other radio frequency terminals for connecting other RF path of the frequency band. For other radio frequency channels other than the main radio frequency channel, it can have the function of transmitting and receiving, or it can only have the function of receiving.

During the operation of the communication system, the controller 1 obtains the working status of each antenna directly or through other detection units, and when it is obtained that the main antenna (for example, the first antenna A1) is abnormal, it needs to control the multiplexing unit M10 Perform the antenna backup operation, the antenna backup operation includes: the controller 1 controls the first radio frequency gating terminal T01 of the multiplex gating unit M10 to communicate with the backup antenna, even if the second antenna A2 communicates with the first radio frequency path 10, The second antenna A2 is switched to be used by the new main set antenna. During the working process of the communication system after the antenna backup operation is performed, since the first radio frequency path 10 includes a transmission chain, the first radio frequency path 10 can pass through the second antenna A2. To achieve signal transmission, if the first radio frequency path 10 also includes a receiving chain, that is, the first radio frequency path 10 can realize signal reception through the second antenna A2, that is, the first radio frequency path 10 can still be realized without using the first antenna A1. Antenna function. It should be noted that the above only takes the first radio frequency channel 10 as the main radio frequency channel and the first antenna A1 as the main set antenna as an example to illustrate the process of the initialization phase and the antenna backup operation. The second radio frequency channel 20 is set as the main radio frequency channel, and the second antenna A2 is the main set antenna. The main radio frequency channel needs to include a transmission chain, and usually the main radio frequency channel is a transceiver channel with a transceiver function.

During the working process of the communication system, the controller 1 will periodically control the multiplex gating unit M10 to perform the SRS polling operation. During the process of executing the SRS polling operation, the transmission of service data will not be performed. The SRS polling operation includes: : The controller 1 controls the multiplexing unit M10 to transmit the SRS through the antennas including the first antenna A1 and the second antenna A2 in turn. For example, the first radio frequency path 10 includes a transmitting chain and a receiving chain, and can switch between the transmitting function and the receiving function, and the second radio frequency path 20 only includes the receiving chain, that is, only has the receiving function. Before performing the SRS round-robin operation, the multiplexing unit M10 enables communication between the first antenna gating terminal P01 and the first radio frequency gating terminal T01, and the multiplexing unit M10 makes the second antenna gating terminal P02 and the first radio frequency gating terminal T01 communicate with each other. The second radio frequency gating terminals T02 are connected. When performing the SRS round-robin operation, first the first radio frequency channel 10 transmits SRS once through the first antenna A1, and then the multiplex gating unit M10 is controlled to make the first radio frequency gating terminal T01 is connected to the second antenna gating terminal P02, so that the first radio frequency channel 10 transmits SRS once through the second antenna A2, that is, the SRS rotation is completed, and then the multiplex gating unit M10 can be controlled to make the first antenna gating terminal P01 Connect with the first radio frequency gating end T01, make the second antenna gating end P02 and the second radio frequency gating end T02 communicate, restore the connection between the antenna and the radio frequency path, until the next SRS rotation cycle .

In addition, the communication system may further include a radio frequency integrated circuit (Radio Frequency Integrated Circuit, RFIC), a baseband (Baseband, BB) and a microcontroller unit (Microcontroller Unit, MCU), and the controller 1 may be one of RFIC, BB and MCU , can also be other control modules, the controller 1 can control the first multiplexing switch M1 and the second multiplexing switch M2 through the mobile industry processor interface (mobile industry processor interface, MIPI) or general input Output (general-purpose input/output, GPIO) interface implementation.

In the communication system of the embodiment of the present application, on the one hand, the multiplex gating unit has at least two antenna gating ends and at least two radio frequency gating ends. Through the control of the multiplexing unit, the main radio frequency channel can be switched to connect to other antennas, and the operation of antenna backup can be realized, that is, the switching of the main set antenna is realized to ensure the normal operation of the antenna; on the other hand, through the control of the multiplex gating unit , the first radio frequency channel including the transmission chain can be switched to connect to different antennas in turn, that is, the SRS can be sent through different antennas in turn, that is, the SRS rotation function is realized. The communication system of the embodiment of the present application can conveniently implement SRS polling and switching of backup antennas. The embodiment of the present application uses the same controller to control the same multiplex gating unit to realize the two functions of antenna backup and SRS rotation. The number of switching devices in the RF path is reduced, thereby reducing the insertion loss in the RF path, simplifying the layout and wiring complexity, improving the antenna performance, and reducing the cost. It is realized by the multiplex gating unit and controlled by the same controller. Therefore, it is possible to realize the decoupling of the two processes of antenna backup and SRS rotation in software.

The following describes the embodiment of the present application in detail with reference to a communication system control method provided by the embodiment of the present application. The communication system control method is used in the above-mentioned communication system, as shown in FIG. 4 , which is a method in the embodiment of the present application. A schematic flowchart of a communication system control method, the method includes:

Step 201, in the initialization stage, the controller 1 controls the communication between the first radio frequency gating terminal T01 in the multiplex gating unit M10 and the first antenna gating terminal P01, so that the second radio frequency gating terminal T01 in the multiplex gating unit M10 is connected. The radio frequency gate terminal T02 and the second antenna gate terminal P02 are connected, even if the first radio frequency path 10 and the first antenna A1 are connected, so that the second radio frequency path 20 and the second antenna A2 are connected;

Wherein, the first radio frequency channel 10 is the main radio frequency channel, the first antenna A1 is the main set antenna, or the second radio frequency channel 20 is the main radio frequency channel, the second antenna A2 is the main set antenna, and the main radio frequency channel includes the transmission chain, In the following, only the first radio frequency channel 10 is used as the main radio frequency channel, and the first antenna A1 is used as the main set antenna as an example for description.

Step 202, periodically obtain the working state of each antenna, when the main antenna (for example, the first antenna A1) is in an abnormal working state, perform an antenna backup operation, and the antenna backup operation includes: controlling the multiplex gating unit M10 to make the main radio frequency path. (for example, the first radio frequency path 10) is communicated with the backup antenna, and the backup antenna is an antenna other than the main set antenna (for example, the first antenna A1). In the structure shown in FIG. 3a, the backup antenna is the second antenna A2, Even if the second antenna A2 is connected to the first radio frequency path 10, the second antenna A2 is switched to be used as a new main set antenna;

Step 203, periodically perform the SRS rotation operation, and the SRS rotation operation includes: controlling the multiplex gating unit M10 to make the SRS send it through different antennas in turn, for example firstly controlling the first radio frequency gating end of the multiplexing gating unit M10 T01 is connected to the first antenna gating terminal P01, so that the first radio frequency channel 10 transmits SRS once through the first antenna A1, and then controls the first radio frequency gating terminal T01 and the second antenna gating terminal P02 of the multiplex gating unit M10 Connected, so that the first radio frequency channel 10 transmits the SRS once through the second antenna A2, that is, the SRS rotation is completed.

In a possible implementation manner, as shown in FIG. 3b, on the basis of the communication system shown in FIG. 3a, in the communication system shown in FIG. 3b, the multiplexing unit M10 includes a first multiplexing switch M1 and a second multiplexer M2.

The first multiplexing switch M1 includes a first antenna terminal P11, a second antenna terminal P12 and a third antenna terminal P13, a first radio frequency terminal T11 and a second radio frequency terminal T12, and the first multiplexing switch M1 is used for In order to connect each of the radio frequency terminals with any antenna terminal, that is, through the control of the first multiplexing switch M1, the first radio frequency terminal T11 and any one of the three antenna terminals can be made. It can be connected between the second radio frequency terminal T12 and any one of the three antenna terminals. It should be noted that the number of antenna terminals of the first multiplexing switch M1 is at least three. The number of radio frequency terminals of the gating switch M1 is at least two; the second multiplexing switch M2 includes a first antenna terminal P21, a second antenna terminal P22, a first radio frequency terminal T21, a second radio frequency terminal T22 and a third radio frequency terminal T23, the second multiplexing switch M2 is used to connect each of the antenna terminals with any radio frequency terminal, that is, by controlling the second multiplexing switch M2, the first antenna terminal of the The connection between P21 and any one of the three radio frequency terminals can make the second antenna terminal P22 communicate with any one of the three radio frequency terminals. It should be noted that the antenna of the second multiplexing switch M2 The number of terminals is at least two, and the number of radio frequency terminals of the second multiplexing switch M2 is at least three; the first antenna A1 is coupled to the first antenna terminal P11 of the first multiplexing switch M1; the second antenna A2 , which is coupled to the second antenna terminal P12 of the first multiplexing switch M1; the third antenna A3 is coupled to the first antenna terminal P21 of the second multiplexing switch M2; the fourth antenna A4 is coupled to the second multiplexing switch M2. The second antenna terminal P22 of the multiplexing switch M2; the third antenna terminal P13 of the first multiplexing switch M1 is coupled to the third radio frequency terminal T23 of the second multiplexing switch M2. The first antenna gating terminal P01 of the multiplexing unit M10 in FIG. 3a is the first antenna terminal P11 of the first multiplexing switch M1 in FIG. 3b, and the second antenna of the multiplexing unit M10 in FIG. 3a The gate terminal P02 is the second antenna terminal P12 of the first multiplexer switch M1 in FIG. 3b. In the structure shown in FIG. 3b, if the first antenna A1 is the master antenna, the backup antenna may be one of the second antenna A2, the third antenna A3 and the fourth antenna A4.

The first radio frequency path 10 is coupled to the first radio frequency terminal T11 of the first multiplexing switch M1; the second radio frequency path 20 is coupled to the second radio frequency terminal T12 of the first multiplexing switch M1. The radio frequency path 10 includes a transmit chain. In a possible implementation, the first radio frequency path 10 includes a transmit chain and a receive chain, and can be switched between the two to implement two functions of transmit and receive. The communication system further includes: a third radio frequency path 30 coupled to the first radio frequency terminal T21 of the second multiplexing switch M2; a fourth radio frequency path 40 coupled to the second radio frequency terminal T22 of the second multiplexing switch M2 .

The controller 1 is specifically used to realize the antenna backup operation by controlling the first multiplexing switch M1 and the second multiplexing switch M2, and by controlling the first multiplexing switch M1 and the second multiplexing switch M2 Through the control of the switch M2, the sounding reference signal SRS rotation operation is realized. The number of antennas coupled to the first multiplexing switch M1 and the second multiplexing switch M2 is at least four, the number of radio frequency channels coupled to the first multiplexing switch M1 is at least two, and the number of the radio frequency channels coupled to the second multiplexing switch M1 is at least two. The number of radio frequency channels of the multiplexing switch M2 is at least two, that is, the first multiplexing switch M1 is at least a double-pole three-throw switch, and the second multiplexing switch M2 is at least a double-pole three-throw switch.

Specifically, the controller 1 can implement switch switching by sending instructions to the first multiplexing switch M1 and the second multiplexing switch M2. For example, each multiplexing switch has a register, and the controller 1 Send an instruction to the register through the interface of the multiplexer switch to change the value of the corresponding address in the register. In response to the change of the value in the register, the connection state of the multiplexer switch changes accordingly, that is, controls the corresponding antenna connected between the terminal and the radio terminal.

Wherein, the antenna end of the switch in this application is a P port (ie, a Port (polarization) port), which is used for coupling to the antenna. The radio frequency end of the switch is the T port (Throw (throw, throw) port), which is used for coupling to the radio frequency integrated circuit.

In the communication system shown in FIG. 3b, the first multiplexing switch and the second multiplexing switch form a multiplexing unit by cascading, so that the first radio frequency channel can pass through the first multiplexing switch The cooperation with the second multiplexing switch can be connected to any antenna. For example, the function of a four-pole four-throw switch can be realized by the cooperation of two double-pole three-throw switches, that is, the antenna can be realized at a limited cost. At the same time, this switch combination is also compatible to realize the antenna backup and SRS rotation functions through the control of the same controller. The specific working process will be described below.

The communication system shown in FIG. 3b is further described below with reference to the communication system control method provided by the embodiments of the present application. The communication system shown in FIG. 3b is a 1T4R system, that is, a communication system with one transmit link and four receive links.

In step 201, as shown in FIG. 5, which is a schematic diagram of the communication system in FIG. 3b in the initialization state, in the initialization stage, the controller 1 sends an initialization instruction to the multiplexing unit M10, and the controller 1 controls Connecting the first radio frequency terminal T11 and the first antenna terminal P11 in the first multiplexing switch M1, that is, connecting the first antenna A1 and the first radio frequency path 10 through the first multiplexing switch M1, The first antenna A1 is used as the antenna corresponding to the first radio frequency channel 10, so that the second radio frequency terminal T12 and the second antenna terminal P12 in the first multiplexing switch M1 are connected, that is, the first multiplexing switch M1 makes the connection between the second radio frequency terminal T12 and the second antenna terminal P12. The second antenna A2 is communicated with the second radio frequency path 20, and the second antenna A2 is used as the antenna corresponding to the second radio frequency path 20, so that the first radio frequency terminal T21 and the first antenna terminal P21 in the second multiplexing switch M2 are connected between the first radio frequency terminal T21 and the first antenna terminal P21. Connected between, that is, through the second multiplexing switch M2, the third antenna A3 and the third radio frequency path 30 are connected, so that the third antenna A3 is used as the antenna corresponding to the third radio frequency path 30, so that the second multiplexing In the switch M2, the second radio frequency terminal T22 and the second antenna terminal P22 are connected, that is, the fourth antenna A4 and the fourth radio frequency path 40 are connected through the second multiplexing switch M2, and the fourth antenna A4 is used as the fourth antenna A4. The antenna corresponding to the radio frequency channel 40, that is, in the initialization stage, the controller 1 controls the first multiplexing switch M1 and the second multiplexing switch M2 in a preset manner, so that the connection between each radio frequency channel and the corresponding antenna is Connected. The initialization can be initiated by RFIC, BB, MCU or other control modules. If the controller 1 initiates initialization, it can directly control the first multiplexing switch M1 and the second multiplexing switch M2 to achieve preset antenna connectivity, If it is initiated by other modules other than the controller 1, the controller 1 executes the preset control process in response to the initialization initiation instructions of other control modules, and controls the first multiplexing switch M1 and the second multiplexing switch M2 implements preset antenna connectivity.

In one embodiment, the fifth antenna A5 (ie, the second antenna unit) is a backup antenna. After initialization (ie, the first state), the first antenna A1, the second antenna A2, the third antenna A3, and the fourth antenna A4 All are in normal state, the first antenna A1, the second antenna A2, the third antenna A3, and the fourth antenna A4 are configured to receive downlink signals (such as signals sent by the base station), the fifth antenna A5 is idle, and the fifth antenna A5 does not transmit signal, and do not receive a signal. One or more of the first antenna A1 , the second antenna A2 , the third antenna A3 , and the fourth antenna A4 may serve as the main antenna, and are configured to transmit uplink data signals. In this state, the first antenna A1 , the second antenna A2 , the third antenna A3 , and the fourth antenna A4 can also send SRS by polling.

Step 202, periodically obtain the working state of each antenna, when the main antenna (for example, the first antenna A1) is in an abnormal working state, perform an antenna backup operation, and the antenna backup operation includes: the controller 1 sends to the multiplexing unit M10. Antenna backup switching command (ie, the first command), the controller 1 controls the first multiplexing switch M1 and the second multiplexing switch M2 to communicate between the main set antenna (for example, the first radio frequency path 10) and the backup antenna , the backup antenna is one of the second antenna A2, the third antenna A3 and the fourth antenna A4, when the main antenna (the first antenna A1) is in a normal working state, keep the connection between each antenna and the radio frequency path in the initialization phase connected state;

Specifically, the abnormal working state means that the antenna cannot work normally, for example, it is damaged due to a collision or other reasons, or the antenna is blocked by objects such as hands, which may cause the antenna to be in an abnormal working state. For the acquisition of the working state of the antenna, for example, hardware or For example, as shown in Figure 3b, an antenna detection unit 2 can be set in the communication system, and the antenna detection unit 2 can be used to detect whether each antenna can work normally. Specifically, a DC link can be set for each antenna. Loop, set the sampling resistor in the DC loop, connect the antenna and the sampling resistor in series in the DC loop, detect the voltage division value of the sampling resistor, know the total voltage in the DC loop and the resistance value of the sampling resistor, through the voltage division of the sampling resistor value, the internal resistance of the antenna can be calculated, and according to the internal resistance of the antenna, it can be determined whether the antenna is in an abnormal working state, for example, when the detected internal resistance value of the antenna exceeds a preset range, it is determined that the antenna is in an abnormal working state; For another example, if a software detection method is adopted, it is not necessary to set the antenna detection unit 2, but to obtain the signal received by each antenna to determine whether the antenna is in an abnormal working state, for example, when the received signal strength (Received Signal Strength) corresponding to the antenna is obtained. When the Signal Strength Indicator, RSSI) exceeds the preset range, it is determined that the antenna is in an abnormal working state. Since the first antenna A1 is the main set antenna, if it is obtained that the main set antenna (the first antenna A1) is in an abnormal working state, it is necessary to pass the first multiplexing switch M1 and the second multiplexing switch M2 Control the switching of the main set antenna, and switch the antenna in normal working state to the new main set antenna to ensure the wireless communication function. For example, if the second antenna A2 is in normal working state, the controller 1 can send the first command to the A multiplexing switch M1, so that the state of the register in the first multiplexing switch M1 is correspondingly changed according to the first command, and according to the state change in the register, the first radio frequency terminal T11 in the first multiplexing switch M1 The first antenna terminal P11 is no longer connected, but the second antenna terminal P12 is connected instead. In this way, even if the second antenna A2 and the first radio frequency path 10 are connected, the first radio frequency path 10 can pass through the second antenna A2. To achieve transceiver, that is, the second antenna A2 is switched to the new main set antenna corresponding to the main RF channel, which realizes the antenna backup function, and ensures that when the first antenna A1 originally used as the main set antenna fails, the antenna backup is used. operation, the normal antenna function can still be achieved; in addition, the controller 1 can also send the first command to the first multiplex switch M1 and the second multiplex switch M2, so that the first multiplex switch M2 The states of the registers in M1 and the second multiplexing switch M2 are correspondingly changed according to the first instruction. According to the states in the registers, the first radio frequency terminal T11 in the first multiplexing switch M1 is connected to the third antenna terminal P13, And the third radio frequency terminal T23 in the second multiplexing switch M2 is connected with the first antenna terminal P21. At this time, the communication between the third antenna A3 and the first radio frequency path 10 is realized, and the first radio frequency path 10 is connected. Sending and receiving can be achieved through the third antenna A3, that is, the third antenna A3 can be switched to the new main set antenna corresponding to the main RF channel, which realizes the antenna backup function and ensures that when the first antenna A1 originally used as the main set antenna appears In the event of a fault, the normal antenna function can still be achieved through the operation of the antenna backup; in addition, the controller 1 can also control the first radio frequency terminal T11 in the first multiplexing switch M1 to communicate with the third antenna terminal P13, and The controller 1 controls the third radio frequency terminal T23 in the second multiplexing switch M2 to communicate with the second antenna terminal P22. At this time, the communication between the fourth antenna A4 and the first radio frequency path 10 is realized, and the first radio frequency channel 10 is connected. A radio frequency channel 10 can realize transceiving through the fourth antenna A4, that is, switch the fourth antenna A4 to be used as a new main set antenna corresponding to the main radio frequency channel, realize the antenna backup function, and ensure that the first antenna used as the main set antenna when When an antenna A1 fails, the normal antenna function can still be achieved through the operation of the antenna backup. Which of the second antenna A2, the third antenna A3 and the fourth antenna A4 is used as the backup antenna can be set as required, but the backup antenna must be an antenna that is in a normal working state through detection.

In one embodiment, the fifth antenna A5 (ie, the second antenna unit) is a backup antenna. When the first antenna A1 is abnormal (ie, the second state), the first antenna A1, the second antenna A2, the third antenna A3, the If the fifth antenna A5 is in a normal state, the first antenna A1, the second antenna A2, the third antenna A3, and the fifth antenna A54 are configured to receive downlink signals (eg, signals sent by the base station). One or more of the first antenna A1 , the second antenna A2 , the third antenna A3 , and the fifth antenna A5 may serve as the main set of antennas and be configured to transmit uplink data signals. In this state, the first antenna A1 , the second antenna A2 , the third antenna A3 , and the fifth antenna A5 may also send SRS by polling.

Step 203: Periodically perform the SRS polling operation. The SRS polling operation includes: the controller 1 controls the first multiplexing switch M1 and the second multiplexing switch M2 to transmit the SRS through different antennas in turn.

Specifically, for example, in the structure shown in FIG. 3b, only the first radio frequency path 10 has the transmitting function, and the other radio frequency paths only have the receiving function. Therefore, when the SRS polling operation is performed, the controller 1 needs to control the first radio frequency path 10. A multiplexing switch M1 and a second multiplexing switch M2 make the first radio frequency channel 10 communicate with each antenna respectively, so that the SRS is transmitted through different antennas. For example, it is assumed that the first antenna A1, the second antenna A2, the third antenna A3 and the fourth antenna A4 are in normal working state before the SRS polling operation is performed. At this time, the first radio frequency path 10 needs to be connected to each of the The antenna is used to realize SRS rotation. During the SRS rotation process, the state of the switch needs to change many times. Therefore, the second command sent by the controller 1 will change the state of the register in the multiplexer switch at different times. So that the SRS can be transmitted through different antennas in different switching states, as shown in Figure 6, Figure 6 is a schematic diagram of the state when the communication system transmits signals through the first antenna in Figure 3b, the controller 1 sends the multiplex gating unit M10 Send the first round of sending control instructions (ie, the second instruction), that is, the controller 1 controls the first radio frequency terminal T11 in the first multiplexing switch M1 to communicate with the first antenna terminal P11, even if the first radio frequency path 10 is connected. In the first antenna A1, the SRS is transmitted through the first antenna A1; as shown in Figure 7, Figure 7 is a schematic diagram of the state when the communication system in Figure 3b transmits signals through the second antenna, the controller 1 sends to the multiplex gating unit M10 The second round of sending control commands (ie, second commands), that is, the controller 1 controls the first radio frequency terminal T11 in the first multiplexing switch M1 to be connected to the second antenna terminal P12, even if the first radio frequency path 10 is connected to The second antenna A2 transmits SRS through the second antenna A2; as shown in FIG. 8, FIG. 8 is a schematic diagram of the state of the communication system in FIG. 3b when the signal is transmitted through the third antenna, the controller 1 sends the first Sending control commands (ie, second commands) in three rounds, that is, the controller 1 controls the first radio frequency terminal T11 in the first multiplexing switch M1 to communicate with the third antenna terminal P13, and the controller 1 controls the second multiplexer The third radio frequency terminal T23 in the gating switch M2 is connected to the first antenna terminal P21, even if the first radio frequency path 10 is connected to the third antenna A3, the SRS is transmitted through the third antenna A3; as shown in FIG. In 3b, the state schematic diagram when the communication system transmits signals through the fourth antenna, the controller 1 sends the fourth round of sending control instructions (that is, the second instruction) to the multiplexing unit M10, that is, the controller controls the first multiplexing The first radio frequency terminal T11 in the switch M1 is connected with the third antenna terminal P13, and the third radio frequency terminal T23 in the second multiplexing switch M2 is controlled by the controller 1 to be connected with the second antenna terminal P22, even if the first radio frequency path 10 is connected to the fourth antenna A4, and transmits the SRS through the fourth antenna A4. SRS rotation means that the controller 1 controls the communication system to switch between the four states shown in Figures 6 to 9, and transmits the SRS once in each of the states, so that the base station can transmit the SRS according to the SRS transmitted on each antenna. The wireless channel parameters are measured, so that the base station can adjust the time delay and beamforming of the downlink signal accordingly.

It should be noted that the embodiment of the present application does not limit the specific structure of each radio frequency channel, as long as one of the first radio frequency channel 10 and the second radio frequency channel 20 has a transmitting function, for example, in FIG. 3a and FIG. 3b In the structure shown, the first radio frequency channel 10 has the function of transmitting and receiving, and can switch between the transmitting function and the receiving function, as shown in FIG. 3c, which is the structure of another communication system in the embodiment of the application. Schematic diagram, wherein, the first radio frequency path 10 only has a transmission function, the first radio frequency path 10 includes a filter 200 and a power amplifier 400, and the first radio frequency terminal T11 of the first multiplexer M1 is coupled to the first radio frequency path 10. The transmitting port TX, the second radio frequency path 20 only has a receiving function, the second radio frequency path 20 includes a filter 200 and a low noise amplifier 300, and the second radio frequency terminal T12 of the first multiplexing switch M1 is coupled through the second radio frequency path 20 In the second receiving port RX2, the third radio frequency path 30 only has a receiving function, the third radio frequency path 30 includes a filter 200 and a low noise amplifier 300, and the first radio frequency terminal T21 of the second multiplexing switch M2 passes through the third radio frequency The channel 30 is coupled to the third receiving port RX3, the fourth radio frequency channel 40 only has a receiving function, the fourth radio frequency channel 40 includes a filter 200 and a low noise amplifier 300, and the second radio frequency terminal T22 of the second multiplexing switch M2 passes through The fourth radio frequency channel 40 is coupled to the fourth receiving port RX4, and the electronic device further includes a fifth radio frequency channel 50, a first receiving switch MR1, a second receiving switch MR2, a third receiving switch MR3 and a fourth receiving switch MR4 , each receiving switch has an antenna terminal, a first radio frequency terminal and a second radio frequency terminal, and the first antenna A1 is coupled to the first antenna terminal P11 of the first multiplexing switch M1 through the first receiving switch MR1, wherein, The first antenna A1 is coupled to the antenna terminal PR1 of the first receiving switch MR1, the second radio frequency terminal TR12 of the first receiving switch MR1 is coupled to the first antenna terminal P11 of the first multiplexing switch M1, and the second antenna A2 The second receiving switch MR2 is coupled to the second antenna terminal P12 of the first multiplexing switch M1, wherein the second antenna A2 is coupled to the antenna terminal PR2 of the second receiving switch MR2, and the second receiving switch MR2 The second radio frequency terminal TR22 is coupled to the second antenna terminal P12 of the first multiplexing switch M1, the third antenna A3 is coupled to the first antenna terminal P21 of the second multiplexing switch M2 through the third receiving switch MR3, The third antenna A3 is coupled to the antenna terminal PR3 of the third receiving switch MR3, the second radio frequency terminal TR32 of the third receiving switch MR3 is coupled to the first antenna terminal P21 of the second multiplexing switch M2, and the fourth The antenna A4 is coupled to the second antenna terminal P22 of the second multiplexing switch M2 through the fourth receiving switch MR4, wherein the fourth antenna A4 is coupled to the antenna of the fourth receiving switch MR4 terminal PR4, the second radio frequency terminal TR42 of the fourth receiving switch MR4 is coupled to the second antenna terminal P22 of the second multiplexing switch M2, the first radio frequency terminal TR1 of the first receiving switch MR1, the second receiving switch The first radio frequency terminal TR2 of MR2, the first radio frequency terminal TR3 of the third receiving switch MR3, and the first radio frequency terminal TR4 of the fourth receiving switch MR4 are all coupled to the first receiving port RX1 through the fifth radio frequency channel 50, and the fifth The radio frequency path 50 includes the filter 200 and the low noise amplifier 300 . For example, when data is received through the antenna, the first antenna A1 can be connected to the fifth radio frequency path 50 through the control of the first receiving switch MR1, and the second receiving switch MR2 can be controlled by the first multiplexing switch M1 to make the first antenna A1 connected to the fifth radio frequency path 50. The two antennas A2 are connected to the second radio frequency path 20, the third antenna A3 is connected to the third radio frequency path 30 through the control of the third receiving switch MR3 and the second multiplexing switch M2, and the fourth receiving switch MR4 cooperates The second multiplexing switch M2 controls the fourth antenna A4 to be connected to the fourth radio frequency path 40, so that each antenna can receive downlink data through its corresponding receiving port, wherein the first receiving switch MR1, the second receiving switch MR1, the second receiving The switching switch MR2, the third receiving switching switch MR3 and the fourth receiving switching switch MR4 are used to realize the switching between the antenna and the first receiving port RX1, and in the structure shown in FIG. 3b, the first switching switch M01 is used to switch. To realize the switching between the antenna and the first receiving port RX1, it can be understood that in other possible implementations, there may be other structures to realize the switching between the first receiving port RX1 and the antenna. The communication mode between a receiving port RX1 and an antenna is not limited. In the following embodiments, only the structure shown in FIG. 3b is used as an example for description.

In a possible implementation manner, the communication system has a 1T4R structure, that is, one radio frequency channel of the above-mentioned communication system has a transmitting function, and four radio frequency channels have a receiving function, wherein the first radio frequency channel 10 and the second radio frequency channel 20 in the One is a transceiver channel, and the other three RF channels are receiving links, so that the transceiver channel can be switched to connect to any antenna through the control of the first multiplexing switch M1 and the second multiplexing switch M2, In order to realize the SRS rotation function. For example, as shown in FIG. 3b and FIG. 5 to FIG. 9 , the first radio frequency path 10 is a transceiver path, and the second radio frequency path 20 , the third radio frequency path 30 and the fourth radio frequency path 40 are receive links. In other achievable trial methods, the second radio frequency path can also be set as a transceiver path, and the first radio frequency path, the third radio frequency path, and the fourth radio frequency path can be set as the receive chain. The 1T4R structure shown in FIG. 9 is described as an example. The first radio frequency path 10 includes a first switch M01, the first switch M01 includes an antenna terminal PM1, a first radio frequency terminal TM11 and a second radio frequency terminal TM12, and the antenna terminal PM1 of the first switch M01 is coupled to the first multiplexer. The first radio frequency terminal T11 of the switch M1 is turned on, the first radio frequency terminal TM11 of the first switch M01 is coupled to the transmitting port TX through the filter 200 and the power amplifier 400, and the second radio frequency terminal TM22 of the first switch M01 is passed through the filter 200. The low noise amplifier 300 is coupled to the first receiving port RX1. In addition, the first switch M01 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; the second radio frequency path 20 includes a second switch M02. The second switch M02 includes an antenna terminal PM2 and a first radio frequency terminal TM21, the antenna terminal PM2 of the second switch M02 is coupled to the second radio frequency terminal T12 of the first multiplexer switch M1, and the first radio frequency of the second switch M02 The terminal TM21 is coupled to the second receiving port RX2 through the filter 200 and the low noise amplifier 300. In addition, the second switch M02 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; the third radio frequency path 30 includes the first radio frequency terminal. Three switching switches M03, the third switching switch M03 includes an antenna terminal PM3 and a first radio frequency terminal TM31, the antenna terminal PM3 of the third switching switch M03 is coupled to the first radio frequency terminal T21 of the second multiplexing switch M2, and the third switching switch M03 The first radio frequency terminal TM31 of the switch M03 is coupled to the third receiving port RX3 through the filter 200 and the low noise amplifier 300. In addition, the third switching switch M03 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; The four radio frequency paths 40 include a fourth switch M04, the fourth switch M04 includes an antenna terminal PM4 and a first radio frequency terminal TM41, and the antenna terminal PM4 of the fourth switch M04 is coupled to the second radio frequency of the second multiplexing switch M2 Terminal T22, the first radio frequency terminal TM41 of the fourth switch M04 is coupled to the fourth receiving port RX4 through the filter 200 and the low noise amplifier 300, in addition, the fourth switch M04 may also include other radio frequency terminals for connecting to other frequency bands the radio frequency path. In the structure shown in FIG. 5 , the second radio frequency terminal TM12 of the first switch M01 is connected to the antenna terminal PM1, and the first radio frequency path 10 is a receiving link at this time. In the structures shown in FIGS. 6 to 9 , , the first radio frequency terminal TM11 of the first switch M01 is connected to the antenna terminal PM1, and the first radio frequency path 10 is a transmission link at this time. In addition, the communication system may further include a radio frequency integrated circuit 102 and a baseband 101 , and the above-mentioned transmit port TX, first receive port RX1, second receive port RX2, third receive port RX3 and fourth receive port RX4 may be provided by the radio frequency integrated circuit 102 , which is used to realize the transmission and reception of radio frequency signals, and the communication connection between the baseband 101 and the radio frequency integrated circuit 102 .

In a possible implementation manner, the communication system has a 2T4R structure, that is, two radio frequency channels of the above communication system have a transmitting function, and four radio frequency channels have a receiving function, wherein one of the first radio frequency channel and the second radio frequency channel The first transmission and reception channel is the first transmission and reception channel, and one of the first RF channel, the second RF channel, the third RF channel and the fourth RF channel except the first transmission and reception channel is the second transmission and reception channel. The first RF channel, Both of the second radio frequency path, the third radio frequency path and the fourth radio frequency path except the first transceiving path and the second transceiving path are receive links. For example, as shown in FIGS. 10 to 14 , FIG. 10 is a schematic structural diagram of another communication system in an embodiment of the application, FIG. 11 is a schematic diagram of the communication system in FIG. 10 in a receiving state, and FIG. 12 is FIG. 10 Figure 13 is a schematic diagram of the state of the communication system in Figure 10 when the communication system transmits signals through the first antenna and the second antenna, Figure 14 is a schematic diagram of the state of the communication system in Figure 10 when the communication system transmits signals through the fourth antenna Schematic diagram of the state of the signal, wherein the structures of the antenna, the first multiplexing switch M1 and the second multiplexing switch M2 are the same as those shown in FIG. 3b, which will not be repeated here. The two radio frequency paths 20 are transceiver paths, and the third radio frequency path 30 and the fourth radio frequency path 40 are receive links. The first radio frequency path 10 includes a first switch M01, the first switch M01 includes an antenna terminal PM1, a first radio frequency terminal TM11 and a second radio frequency terminal TM12, and the antenna terminal PM1 of the first switch M01 is coupled to the first multiplexer. The first radio frequency terminal T11 of the switch M1 is turned on, the first radio frequency terminal T11 of the first switch M01 is coupled to the first transmit port TX1 through the filter 200 and the power amplifier 400, and the second radio frequency terminal T12 of the first switch M01 is filtered through the filter 200 and the power amplifier 400. The device 200 and the low noise amplifier 300 are coupled to the first receiving port RX1. In addition, the first switch M01 may also include other radio frequency terminals for connecting to radio frequency paths of other frequency bands; the second radio frequency path 20 includes a second switch M02 , the second switch M02 includes an antenna terminal PM2, a first radio frequency terminal TM21 and a second radio frequency terminal TM22, the antenna terminal PM1 of the second switch M02 is coupled to the second radio frequency terminal T12 of the first multiplexing switch M1, The first radio frequency terminal T21 of the second switch M02 is coupled to the second transmit port TX2 through the filter 200 and the power amplifier 400, and the second radio frequency terminal TM22 of the second switch M02 is coupled to the second transmission port TX2 through the filter 200 and the low noise amplifier 300. The receiving port RX2, in addition, the second switch M02 may also include other radio frequency terminals for connecting the radio frequency paths of other frequency bands; the third radio frequency path 30 includes a third switch M03, and the third switch M03 includes the antenna terminals PM3 and The first radio frequency terminal TM31, the antenna terminal PM3 of the third switch M03 are coupled to the first radio frequency terminal T21 of the second multiplexing switch M2, and the first radio frequency terminal TM31 of the third switch M03 passes the filter 200 and the low noise The amplifier 300 is coupled to the third receiving port RX3. In addition, the third switch M03 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; the fourth radio frequency path 40 includes a fourth switch M04, which is a fourth switch M04. M04 includes an antenna terminal PM4 and a first radio frequency terminal TM41, the antenna terminal PM4 of the fourth switch M04 is coupled to the second radio frequency terminal T22 of the second multiplexing switch M2, and the first radio frequency terminal TM41 of the fourth switch M04 passes through The filter 200 and the low noise amplifier 300 are coupled to the fourth receiving port RX4. In addition, the fourth switch M04 may further include other radio frequency terminals for connecting to radio frequency paths of other frequency bands. In the structure shown in FIG. 11 , the second radio frequency terminal TM12 of the first switch M01 is connected to the antenna terminal PM1, at this time the first radio frequency path 10 is the receiving link, and the second radio frequency terminal TM22 of the second switch M02 It is connected to the antenna terminal PM2, and the second radio frequency path 20 is a receiving link at this time. In the initialization stage in step 201, the controller 1 can control the first multiplexing switch M1 and the second multiplexing switch M2 to be connected according to the state shown in FIG. 10, and the first antenna A1 is also the master antenna, The other antennas are diversity antennas or MIMO antennas. When performing the SRS polling operation, the controller 1 needs to control the first multiplexing switch M1 and the second multiplexing switch M2 so that each antenna transmits the SRS once through the transmission link. For example, it is assumed that the first antenna A1, the second antenna A2, the third antenna A3 and the fourth antenna A4 are all in normal working state before the SRS rotation operation is performed. For example, the controller 1 controls the communication system to switch to the three states shown in Fig. 12, 13 and Fig. 14 in turn. In the state shown in Fig. 12, the SRS can be sent through the first radio frequency path 10 and the corresponding connected first antenna A1 , and the SRS can be sent through the second radio frequency path 20 and the corresponding connected second antenna A2, that is, the SRS of the two antennas can be sent in turn through the state shown in FIG. 12 , and in the state shown in FIG. A radio frequency channel 10 and the corresponding connected third antenna A3 send SRS. In the state shown in FIG. 14 , the SRS can be sent through the second radio frequency channel 20 and the corresponding connected fourth antenna A4. In the implementation manner of , the switching states between the radio frequency channels and the antennas may be different, but it is only necessary to ensure that each of the antennas can transmit the SRS one by one.

For another example, as shown in FIGS. 15 to 19 , FIG. 15 is a schematic structural diagram of another communication system according to an embodiment of the application, FIG. 16 is a schematic diagram of the communication system in FIG. 15 in a receiving state, and FIG. 17 is a 15 is a schematic diagram of the state when the communication system transmits signals through the first antenna and the third antenna, FIG. 18 is a schematic diagram of the state when the communication system in FIG. 15 transmits signals through the second antenna, and FIG. 19 is a state diagram of the communication system in FIG. 15 through the fourth antenna A schematic diagram of the state when transmitting a signal, wherein the first radio frequency path 10 and the third radio frequency path 30 are transceiver paths, and the second radio frequency path 20 and the fourth radio frequency path 40 are receiving links. The first radio frequency path 10 includes a first switch M01, the first switch M01 includes an antenna terminal PM1, a first radio frequency terminal TM11 and a second radio frequency terminal TM12, and the antenna terminal PM1 of the first switch M01 is coupled to the first multiplexer. The first radio frequency terminal T11 of the switch M1 is turned on, the first radio frequency terminal TM11 of the first switch M01 is coupled to the first transmit port TX1 through the filter 200 and the power amplifier 400, and the second radio frequency terminal TM12 of the first switch M01 is filtered through the filter 200 and the power amplifier 400. The device 200 and the low noise amplifier 300 are coupled to the first receiving port RX1. In addition, the first switch M01 may also include other radio frequency terminals for connecting to radio frequency paths of other frequency bands; the second radio frequency path 20 includes a second switch M02 , the second switch M02 includes an antenna terminal PM2 and a first radio frequency terminal TM21, the antenna terminal PM2 of the second switch M02 is coupled to the second radio frequency terminal T12 of the first multiplexing switch M1, and the first radio frequency terminal T12 of the second switch M02 A radio frequency terminal TM21 is coupled to the second receiving port RX2 through the filter 200 and the low noise amplifier 300. In addition, the second switch M02 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; the third radio frequency path 30 Including a third switch M03, the third switch M03 includes an antenna terminal PM3, a first radio frequency terminal TM31 and a second radio frequency terminal TM32, and the antenna terminal PM3 of the third switch M03 is coupled to the second multiplexing switch M2. A radio frequency terminal T21, the first radio frequency terminal TM31 of the third switch M03 is coupled to the second transmit port TX2 through the filter 200 and the power amplifier 400, and the second radio frequency terminal TM32 of the third switch M03 passes through the filter 200 and low noise The amplifier 300 is coupled to the third receiving port RX3. In addition, the third switch M03 may also include other radio frequency terminals for connecting radio frequency paths of other frequency bands; the fourth radio frequency path 40 includes a fourth switch M04, which is a fourth switch M04. M04 includes an antenna terminal PM4 and a first radio frequency terminal TM41, the antenna terminal PM4 of the fourth switch M04 is coupled to the second radio frequency terminal T22 of the second multiplexing switch M2, and the first radio frequency terminal TM41 of the fourth switch M04 passes through The filter 200 and the low noise amplifier 300 are coupled to the fourth receiving port RX4. In addition, the fourth switch M04 may further include other radio frequency terminals for connecting to radio frequency paths of other frequency bands. In the structure shown in FIG. 16 , the second radio frequency terminal TM12 of the first switch M01 is connected to the antenna terminal PM1, at this time the first radio frequency path 10 is the receiving link, and the second radio frequency terminal TM22 of the second switch M02 It is connected to the antenna terminal PM2, and the third radio frequency path 30 is a receiving link at this time. In the initialization stage in step 201, the controller 1 can control the first multiplexing switch M1 and the second multiplexing switch M2 to be connected according to the state shown in FIG. 16, and the first antenna A1 is also the master antenna, The other antennas are diversity antennas or MIMO antennas. When performing the SRS polling operation, the controller 1 needs to control the first multiplexing switch M1 and the second multiplexing switch M2 so that each antenna transmits the SRS once through the transmission link. For example, it is assumed that the first antenna A1, the second antenna A2, the third antenna A3 and the fourth antenna A4 are all in normal working state before the SRS rotation operation is performed. For example, the controller 1 controls the communication system to switch to the three states shown in FIG. 17 , 18 and FIG. 19 in turn. In the state shown in FIG. 17 , the SRS can be sent through the first radio frequency path 10 and the corresponding connected first antenna A1 , and the SRS can be sent through the third radio frequency channel 30 and the corresponding connected third antenna A3, that is, the SRS of the two antennas can be sent in turn through the state shown in FIG. 17 , and in the state shown in FIG. A radio frequency channel 10 and the corresponding connected second antenna A2 send SRS. In the state shown in FIG. 19 , the SRS can be sent through the third radio frequency channel 30 and the corresponding connected fourth antenna A4. In the implementation manner of , the switching states between the radio frequency channels and the antennas may be different, but it is only necessary to ensure that each of the antennas can transmit the SRS one by one.

In a possible implementation manner, as shown in FIG. 3b and FIG. 4 to FIG. 19 , the communication system may further include a fifth antenna A5 (eg, a second antenna unit), and the first multiplexing switch M1 may further include a fourth antenna A5 (for example, a second antenna unit) The antenna terminal P14 and the fifth antenna A5 are coupled to the fourth antenna terminal P14 of the first multiplexing switch M1. By controlling the first multiplexing switch M1, the fourth antenna terminal P14 and the first radio frequency terminal can be Communication between T11, or communication between the fourth antenna terminal P14 and the second radio frequency terminal T12, the fifth antenna A5 is used as a backup antenna, that is, in the process of performing antenna backup in the above step 202, when the first antenna A1 is in the In the abnormal working state, the backup antenna is the fifth antenna A5. For example, the fourth antenna terminal P14 in the first multiplexing switch M1 can be controlled to be connected to the first radio frequency terminal T11, so that the fifth antenna A5 is switched to be the main one. The integrated antenna is used to ensure the communication function without changing the control logic of other antennas. It should also be noted that the fifth antenna A5 is only used as a backup antenna, so when the fifth antenna A5 is not used, the fifth antenna A5 does not need to be used when performing the SRS polling operation in the above step 203 . When the communication system includes the fifth antenna A5, when the main antenna works abnormally, the fifth antenna A5 can be switched to be used as the main antenna, so that the service data transmission of other antennas will not be affected. It should be noted that the communication system in FIG. 3b includes the fifth antenna A5. In other achievable implementations, the communication system may not include the fifth antenna A5. The second antenna A2, the third antenna A3 and the fourth antenna Antenna A4 can also realize the backup of the antenna.

In a possible implementation manner, the communication system further includes a casing, the first antenna A1, the second antenna A2, the third antenna A3 and the fourth antenna A4 are all part of the casing, and the fifth antenna A5 is accommodated in the casing . The four antennas mainly used for communication are arranged on the casing to provide better radiation effect, and the fifth antenna A5 as a backup antenna is arranged as an antenna inside the casing to save space and simplify the layout.

In a possible implementation, as shown in FIG. 3b and FIG. 4 to FIG. 19 , the first multiplexing switch M1 and the second multiplexing switch M2 are double-pole four-throw switches (Double Pole 4Throw, DP4T ), wherein the first multiplexing switch M1 is used to switch between the four antenna terminals and the two radio frequency terminals, and the second multiplexing switch M2 is used to switch between the two antenna terminals and the four radio frequency terminals Switching, in the above embodiment, only three radio frequency terminals in the second multiplexing switch M2 are introduced. For another radio frequency terminal, it can be set in the air or connected to other radio frequency channels.

In a possible implementation manner, as shown in FIG. 20, FIG. 20 is a schematic flowchart of another communication system control method in this embodiment of the present application. In the above step 202, the working state of each antenna is periodically detected. When an antenna A1 is in an abnormal working state, the process of performing the antenna backup operation includes: Step 2021: Periodically obtain the working state of each antenna, and determine whether the main antenna (for example, the first antenna A1) is in an abnormal working state, and if so, that is, When the main set antenna (the first antenna A1) is in an abnormal working state, then go to step 2022, if not, that is, when the main set antenna (the first antenna A1) is in a normal working state, then go to step 203, and periodically perform the SRS polling operation, Step 2021 is re-entered after each execution of the SRS polling operation ends, and the working status of each antenna is acquired. Step 2022, stop performing the SRS rotation operation, then perform step 2023, step 2023, perform an antenna backup operation, and performing the antenna backup operation includes: controlling the multiplex gating unit M10 to make the main radio frequency path (such as the first radio frequency path 10) and the backup operation. communication between the antennas. Since the SRS round-robin operation is performed based on the preset correspondence between the antenna and the radio frequency channel, when the main antenna (the first antenna A1) is in an abnormal working state, the antenna backup operation is performed in step 2023. The preset relationship of SRS to perform the SRS rotation operation will cause the transmission of SRS cannot be realized through the main set antenna (the first antenna A1). Therefore, in order to avoid the problems caused by the subsequent SRS rotation, before performing the antenna backup operation in step 2023 , stop performing the SRS polling operation, and if the main antenna (the first antenna A1 ) is in a normal working state and there is no other problem, continue to periodically perform the SRS polling operation in a preset manner.

In a possible implementation manner, as shown in FIG. 21 , which is a schematic flowchart of another communication system control method in this embodiment of the present application, the above step 202 is to periodically acquire the working status of each antenna. When the antenna (for example, the first antenna A1) is in an abnormal working state, the process that the multiplex gating unit M10 makes the main radio frequency path (the first radio frequency path 10) communicate with the backup antenna includes: Step 2021, periodically obtaining each antenna determine whether the main set antenna (the first antenna A1) is in an abnormal working state, if so, that is, when the main set antenna (the first antenna A1) is in an abnormal working state, then go to step 2022, if not, that is, when the main set antenna (the first antenna A1) is in an abnormal working state The first antenna A1) is in a normal working state, then enter step 203; step 203, periodically perform the SRS rotation operation according to the preset initial logic, and the SRS rotation operation includes: the controller 1 controls the multiplex gating unit M10 to make the SRS pass through Different antennas are sent in turn; Step 2022, performing an antenna backup operation, and performing the antenna backup operation includes: controlling the multiplex gating unit M10 to communicate between the main radio frequency path (the first radio frequency path 10) and the backup antenna, and then performing step 2024 Step 2024: Periodically perform the SRS polling operation according to the preset standby logic. The SRS polling operation includes: controlling the multiplex gating unit M10 to transmit the SRS through different antennas in turn. The preset initial logic is the switch control logic preset for the main set antenna (the first antenna A1) in a normal working state, and the preset backup logic is for the main set antenna (the first antenna A1) to be in an abnormal working state to perform antenna backup , the switch switching logic after switching the main antenna to the backup antenna. For example, taking the communication system shown in FIG. 3b as an example, when the control method shown in FIG. 21 is applied, when the main antenna (the first antenna A1) is in a normal working state, the preset initial logic is executed to make the first antenna A radio frequency channel 10 is switched to the first antenna A1, the second antenna A2, the third antenna A3 and the fourth antenna A4 respectively, and the SRS rotation operation is realized through the four antennas respectively. When the main antenna (the first antenna A1) fails due to failure In an abnormal working state, for example, the main radio frequency path (the first radio frequency path 10) is switched to connect the fifth antenna A5, and the fifth antenna A5 is used as the new main set antenna, then, the controller 1 will obtain by, for example, looking up a table. The standby logic, when performing the SRS rotation operation, according to the standby logic, the main radio frequency path (the first radio frequency path 10) is switched to the second antenna A2, the third antenna A3, the fourth antenna A4 and the fifth antenna A5 respectively, respectively. The SRS round-robin operation is realized through these four antennas.

Embodiments of the present application further provide a controller, including: a processor and a memory, where the memory is used to store at least one instruction, which, when loaded and executed by the processor, implements the communication system control methods in the foregoing embodiments.

The number of processors may be one or more, and the processors and the memory may be connected by a bus or in other ways. As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs, non-transitory computer-executable programs and modules, and the processor runs the non-transitory software programs, instructions and modules stored in the memory , so as to perform various functional applications and data processing, that is, to implement the methods in any of the above method embodiments. The memory may include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function; and necessary data and the like. Additionally, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. Specifically, the controller may be an RFIC, a BB or an MCU.

Embodiments of the present application further provide an electronic device, including the communication system in the foregoing embodiments. Electronic devices may be mobile phones, tablet computers, personal computers (PCs), personal digital assistants (PDAs), smart watches, netbooks, wearable electronic devices, augmented reality (AR) devices, Virtual reality (VR) devices, in-vehicle devices, drone devices, smart cars, smart speakers, robots, smart glasses, and more.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program runs on the computer, causes the computer to execute the communication system control method in the foregoing embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer program instructions, when loaded and executed on a computer, result in whole or in part of the processes or functions described herein. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk), and the like.

In the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can indicate the existence of A alone, the existence of A and B at the same time, and the existence of B alone. where A and B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

A communication system, comprising:

a plurality of first antenna units;

at least one second antenna element;

a plurality of radio frequency paths, at least one of the radio frequency paths including a transmit chain; and

A multiplex gating unit, the multiplex gating unit includes a plurality of antenna gating ends and a plurality of radio frequency gating ends, and the multiplexing gating unit is configured to selectively turn on the antenna gating ends. at least one and at least one of the radio frequency gating ends, the antenna gating ends are respectively coupled to the first antenna unit and the second antenna unit, and the radio frequency gating ends are respectively coupled to the radio frequency path;

In the first state, multiple first antenna units receive downlink signals, and multiple first antenna units poll to transmit uplink signals;

In the second state, at least some of the second antenna units and some of the first antenna units receive signals and receive downlink signals, and at least some of the second antenna units and some of the first antenna units poll and transmit the uplink signals Signal.
The communication system according to claim 1, wherein,

In the first state, the antenna gate terminals corresponding to the plurality of first antenna units are connected to the radio frequency gate terminal;

In the second state, at least part of the second antenna unit and part of the antenna gate terminal corresponding to the first antenna unit are connected to the radio frequency gate terminal.
The communication system according to claim 1 or 2, characterized in that, the communication system further comprises a controller, and the controller is configured to send a control instruction to the multiplexing unit;

The multiplexing unit is configured to selectively turn on at least one of the antenna gating terminals and at least one of the radio frequency gating terminals in response to the control instruction.
The communication system according to claim 3, wherein the second state is entered when at least one of the first antenna units is in an abnormal working state.
The communication system according to any one of claims 1 to 3, wherein the uplink signal is a sounding reference signal SRS.
5. The communication system of any of claims 1 to 5, wherein the radio frequency path comprises a receive link.
The communication system according to any one of claims 1 to 6, wherein the multiplexing unit comprises a first multiplexing switch and a second multiplexing switch, the first multiplexing switch A pass switch is coupled to the second multiplexer, the first multiplexer is coupled to at least a portion of the plurality of the first antenna elements and at least one of the second antenna elements, the second A multiplexer is coupled to another portion of the plurality of first antenna elements and at least one of the second antenna elements.
The communication system according to claim 7, wherein,

The first antenna unit includes:

a first antenna, coupled to the first antenna end of the first multiplexer switch;

a second antenna, coupled to the second antenna end of the first multiplexer switch;

a third antenna, coupled to the first antenna end of the second multiplexing switch;

a fourth antenna, coupled to the second antenna end of the second multiplexing switch;

the third antenna terminal of the first multiplexing switch is coupled to the third radio frequency terminal of the second multiplexing switch;

The first multiplexing switch further includes a fourth antenna terminal, and the second antenna unit is coupled to the fourth antenna terminal of the first multiplexing switch;

The radio frequency path includes:

a first radio frequency path, coupled to the first radio frequency end of the first multiplexer switch;

a second radio frequency path, coupled to the second radio frequency end of the first multiplexer;

a third radio frequency path, coupled to the first radio frequency end of the second multiplexing switch;

The fourth radio frequency channel is coupled to the second radio frequency end of the second multiplexer switch.
The communication system according to claim 8, wherein,

The first radio frequency path is a transceiver path, and the second radio frequency path, the third radio frequency path and the fourth radio frequency path are receive links;

Alternatively, the second radio frequency path is a transceiver path, and the first radio frequency path, the third radio frequency path and the fourth radio frequency head path are receive links.
The communication system according to claim 9, wherein,

The first radio frequency path is a transceiver path, and the second radio frequency path, the third radio frequency path and the fourth radio frequency path are receive links;

The first radio frequency path includes a first switch, the first switch includes an antenna terminal, a first radio terminal and a second radio terminal, and the antenna terminal of the first switch is coupled to the first multiplexer. The first radio frequency end of the first switch is coupled to the transmit port through a filter and a power amplifier, and the second radio frequency end of the first switch is coupled to the transmit port through a filter and a low noise amplifier. the first receiving port;

The second radio frequency path includes a second switch, the second switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the second switch is coupled to the second switch of the first multiplexer switch. a radio frequency end, the first radio frequency end of the second switch is coupled to the second receiving port through a filter and a low noise amplifier;

The third RF path includes a third switch, the third switch includes an antenna terminal and a first RF terminal, and the antenna terminal of the third switch is coupled to the first RF terminal of the second multiplexer switch , the first radio frequency end of the third switch is coupled to the third receiving port through a filter and a low noise amplifier;

The fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the fourth switch is coupled to the second switch of the second multiplexer switch. The radio frequency end, the first radio frequency end of the fourth switch is coupled to the fourth receiving port through the filter and the low noise amplifier.
The communication system according to claim 8, wherein,

One of the first radio frequency path and the second radio frequency path is the first transceiving path, the first radio frequency path, the second radio frequency path, the third radio frequency path and the fourth radio frequency One of the channels except the first transceiving channel is the second transceiving channel, and the first radio frequency channel, the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel are except one. Both of the first transceiving path and the second transceiving path are receive links.
The communication system of claim 11, wherein:

The first radio frequency path and the second radio frequency path are transceiver paths, and the third radio frequency path and the fourth radio frequency path are receive links;

The first radio frequency path includes a first switch, the first switch includes an antenna terminal, a first radio terminal and a second radio terminal, and the antenna terminal of the first switch is coupled to the first multiplexer. The first radio frequency end of the switch, the first radio frequency end of the first switch is coupled to the first transmit port through a filter and a power amplifier, and the second radio frequency end of the first switch is through a filter and a low noise amplifier. coupled to the first receiving port;

The second radio frequency path includes a second switch, the second switch includes an antenna terminal, a first radio terminal and a second radio terminal, and the antenna terminal of the second switch is coupled to the first multiplexer. The second radio frequency terminal of the switch is connected to the second radio frequency terminal of the switch, the first radio frequency terminal of the second switch switch is coupled to the second transmitting port through a filter and a power amplifier, and the second radio frequency terminal of the second switch switch is connected to the second transmission port through a filter and a low noise amplifier. coupled to the second receiving port;

The third radio frequency path includes a third switch, the third switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the third switch is coupled to the first switch of the second multiplexer switch. a radio frequency end, the first radio frequency end of the third switch is coupled to the third receiving port through a filter and a low noise amplifier;

The fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the fourth switch is coupled to the second switch of the second multiplexer switch. The radio frequency end, the first radio frequency end of the fourth switch is coupled to the fourth receiving port through the filter and the low noise amplifier.
The communication system of claim 11, wherein:

The first radio frequency path and the third radio frequency path are transceiver paths, and the second radio frequency path and the fourth radio frequency path are receive links;

The first radio frequency path includes a first switch, the first switch includes an antenna terminal, a first radio terminal and a second radio terminal, and the antenna terminal of the first switch is coupled to the first multiplexer. The first radio frequency end of the switch, the first radio frequency end of the first switch is coupled to the first transmit port through a filter and a power amplifier, and the second radio frequency end of the first switch is through a filter and a low noise amplifier. coupled to the first receiving port;

The second radio frequency path includes a second switch, the second switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the second switch is coupled to the second switch of the first multiplexer switch. a radio frequency end, the first radio frequency end of the second switch is coupled to the second receiving port through a filter and a low noise amplifier;

The third radio frequency path includes a third switch, the third switch includes an antenna terminal, a first radio terminal and a second radio terminal, and the antenna terminal of the third switch is coupled to the second multiplexer. The first radio frequency end of the switch, the first radio frequency end of the third switch is coupled to the second transmit port through a filter and a power amplifier, and the second radio frequency end of the third switch is passed through a filter and a low noise amplifier. coupled to the third receiving port;

The fourth radio frequency path includes a fourth switch, the fourth switch includes an antenna terminal and a first radio frequency terminal, and the antenna terminal of the fourth switch is coupled to the second switch of the second multiplexer switch. The radio frequency end, the first radio frequency end of the fourth switch is coupled to the fourth receiving port through the filter and the low noise amplifier.
An electronic device, characterized by comprising the communication system according to any one of claims 1 to 13.
The electronic device of claim 14, further comprising:

The casing, the first antenna unit is a part of the casing, and the second antenna unit is accommodated in the casing.