WO2022226682A1

WO2022226682A1 - Switch circuit, communication apparatus and terminal device

Info

Publication number: WO2022226682A1
Application number: PCT/CN2021/089590
Authority: WO
Inventors: 吕清; 史坡; 邱丹; 荆伟涛; 邹俊浩
Original assignee: 华为技术有限公司
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2022-11-03
Also published as: CN115529849A

Abstract

Provided in the embodiments of the present application are a switch circuit, a communication apparatus and an electronic device. The switch circuit comprises a three-channel switch and a third double-pole double-throw switch, wherein the three-channel switch comprises either of the following: a first double-pole double-throw switch and a second double-pole double-throw switch, and a three-pole three-throw switch; the three-channel switch is used for selectively coupling a first signal transmission channel from among a plurality of signal transmission channels to any one of a first antenna, a second antenna and the third double-pole double-throw switch; and the third double-pole double-throw switch is used for further selectively coupling the first signal transmission channel to either of a third antenna and a fourth antenna when the third double-pole double-throw switch is coupled to the first signal transmission channel via the three-channel switch. By means of the switch circuit, a plurality of signal transmission channels can be prevented from preempting the same antenna, which is conducive to solving the problem of preemption of an antenna by a plurality of network interfaces and improving the signal transceiving quality of each network interface.

Description

Switching circuits, communication devices and terminal equipment

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a switch circuit, a communication device, and a terminal device.

Background technique

With the development of science and technology, terminal communication technology has been improved by leaps and bounds. In the current terminal technology, in order to meet the diverse needs of users, multiple subscriber identification module (SIM) cards can be inserted into one terminal device at the same time. As an example, more and more smartphones currently support inserting two SIM cards at the same time, for example, one SIM card is used for private business and the other SIM card is used for work; or, one SIM card is used for data business, Another SIM card is used for voice services.

In order to reduce the layout area of the terminal equipment, the industry usually uses multiple SIM cards to share the same set of communication equipment to send and receive signals. There is a situation that when SIM card 1 is transmitting a signal, after SIM card 2 monitors the signal, it uses the same antenna as SIM card 1 to receive the signal, which causes the signal being transmitted by SIM card 1 to be interrupted; When the SIM card 2 is receiving signals, the SIM card 1 uses the same antenna as the SIM card 2 to transmit signals, which results in interruption of the signal reception of the SIM card 2. To sum up, in a terminal device with multiple SIM cards, the multiple SIM cards have the problem of antenna preemption, which affects the communication quality of one of the SIM cards, thereby reducing the user experience.

SUMMARY OF THE INVENTION

The switch circuit, the communication device, and the terminal device provided by the embodiments of the present application are beneficial to solve the problem of antenna preemption of multiple network interfaces, and improve the quality of signal transmission and reception of each network interface. In order to achieve the above purpose, the present application adopts the following technical solutions.

In a first aspect, an embodiment of the present application provides a switch circuit, the switch circuit includes a three-channel switch and a third double-pole double-throw switch, and the three-channel switch includes any one of the following: a first double-pole double-throw switch and a third double-pole double-throw switch. Two double-pole double-throw switches, or three-pole triple-throw switches; the three-channel switch is used to selectively couple the first signal transmission channel of the multiple signal transmission channels to the first antenna, the second antenna and the Any one of the third double-pole double-throw switches; the third double-pole double-throw switch is used to further transmit the first signal when coupled to the first signal transmission channel through the three-channel switch The channel is selectively coupled to any one of the third antenna and the fourth antenna.

The switch circuit in the embodiment of the present application is provided with a three-channel switch and a third double-pole double-throw switch, so that the first signal transmission channel in the multi-channel signal transmission channel can be coupled with any one of the first antenna to the fourth antenna. At the same time, the remaining signal transmission channels in the multi-channel signal transmission channel are correspondingly coupled with the remaining antennas, so as to avoid preempting the same antenna before multiple signal transmission channels, thereby solving the problem of antenna preemption among multiple network interfaces, and improving each network interface. signal transmission and reception quality.

Based on the first aspect, in a possible implementation manner, the three-channel switch includes the first double-pole double-throw switch and the second double-pole double-throw switch; the first double-pole double-throw switch, for coupling the first signal transmission channel and the second signal transmission channel of the multiple signal transmission channels to one of the first antenna and the second double-pole double-throw switch, respectively; the first Two double-pole double-throw switches, for further transmitting the first signal when coupled to one of the first signal transmission channel and the second signal transmission channel through the first double-pole double-throw switch One of the channel and the second signal transmission channel, and the third signal transmission channel of the multiplexed signal transmission channel are respectively coupled to the second antenna and one of the third double pole double throw switch.

Based on the first aspect, in a possible implementation manner, the three-channel switch includes: the three-pole, three-throw switch, configured to selectively connect the first signal transmission channel, the multi-channel signal transmission channel The second signal transmission channel in and the third signal transmission channel in the multi-channel signal transmission channel are respectively coupled to one of the first antenna, the second antenna and the third double-pole double-throw switch.

Based on the first aspect, in a possible implementation manner, the third double-pole double-throw switch is specifically configured to transmit the fourth signal transmission channel in the multiple signal transmission channels and the first signal transmission One of the channel, the second signal transmission channel and the third signal transmission channel is coupled to one of the third antenna and the fourth antenna, respectively.

In a second aspect, an embodiment of the present application provides a communication device, where the communication device includes the switch circuit according to the first aspect, and the multi-channel signal transmission channel.

Based on the second aspect, in a possible implementation manner, the first signal transmission channel is used for transmitting signals and receiving signals, and the second signal transmission channel, the third signal transmission channel and the The fourth signal transmission channel is used for receiving signals.

Based on the second aspect, in a possible implementation manner, the communication apparatus further includes the first antenna, the second antenna, the third antenna, and the fourth antenna.

Based on the second aspect, in a possible implementation manner, the communication device further includes: a controller, configured to control the switching of the three-channel switch and the third double-pole double-throw switch.

In a third aspect, an embodiment of the present application provides a terminal device, the terminal device includes multiple network interfaces and the communication device according to the second aspect; a first network interface of the multiple network interfaces passes through the first network interface. The signal transmission channel transmits signals to and receives signals from the network device; the second network interface in the plurality of network interfaces passes through the second signal transmission channel, the third signal transmission channel in the communication device and the At least one of the fourth signal transmission channels receives signals from the network device.

Based on the third aspect, in a possible implementation manner, the first network interface and the second network interface belong to different standards.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

3 is a schematic structural diagram of a switch circuit in a conventional technology provided by an embodiment of the present application;

4 is a schematic structural diagram of a switch circuit provided by an embodiment of the present application;

5a-5d are schematic diagrams of application scenarios of the switch circuit shown in FIG. 4 provided by an embodiment of the present application;

6 is a schematic structural diagram of a switch circuit provided by an embodiment of the present application;

7a-7d are schematic diagrams of application scenarios of the switch circuit shown in FIG. 4 provided by an embodiment of the present application;

FIG. 8 is another schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a connection relationship between a control circuit and a switch circuit provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first", "second" and the like in the present application are only used for the purpose of distinguishing and describing, and cannot be construed as indicating or implying relative importance, nor can they be construed as indicating or implying order. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, eg, comprising a series of steps or elements. A method, system, product or device is not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to the process, method, product or device. In the description of the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, illustration or illustration. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

The terminal equipment in the embodiments of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment, etc. The terminal device may be a device that provides voice/data connectivity to the user, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol , SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, automotive Devices, wearable devices, terminal devices in the future 5G network, or terminal devices in the future evolved public land mobile network (public land mobile network, PLMN), etc., are not limited in this embodiment of the present application.

The network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may also be referred to as an access network device or a radio access network device, and may be an evolved NodeB (evolved NodeB) in the LTE system. eNB or eNodeB), can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the access device can be a relay station, an access point, and an access device in the future 5G network or The access device and the like in the PLMN network to be evolved in the future may be a gNB in a new radio system (new radio, NR) system. This embodiment of the present application is not limited. In addition, in this embodiment of the present application, the network device may also be a device in a RAN (Radio Access Network, radio access network), or in other words, a RAN node that accesses the terminal device to the wireless network. For example, as an example and not a limitation, as a network device, it can be listed as: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC) ), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), Baseband unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc.

Please refer to FIG. 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. In the system architecture shown in FIG. 1 , a terminal device 10 and a network device 20 are included. The figure schematically shows a situation in which the terminal device 10 communicates with a network device 20 . In other possible scenarios, the terminal device 10 may have a communication connection with multiple network devices 20 at the same time and can send and receive data, and the multiple network devices 20 may be network devices 20 of the same wireless access type, for example, the multiple network devices 20 may be a network device 20 of an LTE system, or may be a network device 20 of an NR system; the plurality of network devices 20 may also be network devices 20 of different wireless access types, for example, a part may be a network device 20 of an LTE system, The other part may be the network device 20 of the NR system, which is not limited in this embodiment of the present application. The embodiment of the present application does not show a situation in which the terminal device 10 communicates with multiple network devices 20 . The terminal device 10 may be provided with multiple network interfaces, and the "network interface" described in the embodiments of this application is a logical concept. For example, a "network interface" can be understood as a corresponding logical network card or a subscriber identification module (SIM) card. It can be understood that the terminal device 10 is provided with multiple "network interfaces", which means that the terminal device 10 can support multiple SIM cards. For example, the SIM card can be an identification card of a global system for mobile communications (GSM) digital mobile phone user, used to store the user's identification code and key, and support the authentication of the user by the GSM system. For another example, the SIM card may also be a universal subscriber identity module (USIM), which may also be called an upgraded SIM card. FIG. 1 exemplarily shows a situation in which two network interfaces, a network interface A1 and a network interface A2 , are provided in the terminal device 10 . Correspondingly, the terminal device 10 supports the two SIM cards, the SIM card 1 and the SIM card 2 . Wherein, the two SIM cards in the same terminal device 10 may belong to the same mobile operator, or may belong to different mobile operators; may belong to the same standard (the standard includes NR, LTE, wideband code division multiple access (wideband code division multiple access). access, WCDMA), time division multiple access (time division multiple access, TDMA) 2000, or GSM, etc.), can also belong to different standards. Preferably, the two SIM cards belong to different standards. The user can switch between the two network interfaces. In this embodiment of the present application, one of the network interfaces may be used as the primary network interface, and the other network interface may be used as the secondary network interface. For example, the main network interface may be a network interface where the user currently performs services such as traffic usage, voice calls, etc., and the main network interface can both transmit signals to the network device 20 (uplink communication), and can also receive signals from the network device 20 ( Downlink communication); the secondary network interface can only receive signals from the network device 20 as a listening interface (downlink communication). In a specific scenario, the user selects the network interface A1 for traffic usage, the network interface A1 is the main network interface, and the network interface A2 is the secondary network interface; when the network interface A2 receives a voice call signal, the user makes a voice call through the network interface A2. , at this time, the network interface A2 is the primary network interface, and the network interface A1 is the secondary network interface.

As shown in FIG. 1 , the network interface A1 and the network interface A2 can share the same set of communication device hardware to realize the sending and receiving of signals. Please refer to FIG. 2 , which is a schematic structural diagram of a communication apparatus 100 provided by an embodiment of the present application. In FIG. 2 , the communication device 100 includes a processor 101 and a radio frequency integrated circuit (RFIC, Radio Frequency Integrated Circuit) 102 . The RFIC 102 includes multiple signal transmission channels, such as four signal transmission channels (for example, one signal transmission channel and three signal transmission channels), and five signal transmission channels (for example, including one signal transmission channel and four signal transmission channels) ), etc., the embodiments of the present application do not specifically limit the number of signal transmission channels. In the embodiments of the present application, the RFIC 102 includes four signal transmission channels as an example for description. FIG. 2 schematically shows that the RFIC 102 includes four signal transmission channels, of which one signal transmission channel can both transmit and receive signals, and the other three signal transmission channels can only receive signals. FIG. 2 schematically shows a situation where the first signal transmission channel TR1 can transmit signals and also receive signals, and the second to fourth signal transmission channels R2, R3 and R4 are only used for signal reception. In other possible implementation manners, the second signal transmission channel (or the third signal transmission channel, or the fourth signal transmission channel) may also be set to be capable of both transmitting and receiving signals, and the other three channels The signal transmission channel is set to receive signals only. The signal transmission channel TR1 is used for transmitting and receiving signals to and from the network device 20 shown in FIG. 1 , and the signal transmission channels R2 , R3 and R4 are used for receiving signals from the network device 20 shown in FIG. 1 . Each signal transmission channel shown in Figure 2 may include devices such as mixers and power amplifiers; optionally, may also include devices such as filters, variable gain amplifiers, and phase shifters; The transmission channels (for example, the signal transmission channel TR1 and the signal transmission channel R2 ) may share the same set of power amplifiers and mixers, etc., which are not specifically limited in this embodiment of the present application. Each signal transmission channel is coupled to the processor 101 . The processor 101 is used for processing the fundamental frequency signal to be transmitted and the received fundamental frequency signal. For example, the processor 101 provides the baseband signal to be transmitted to the signal transmission channel TR1, and the baseband signal undergoes up-conversion processing by the mixer and power amplification processing by the power amplifier to generate a radio frequency signal for transmission; the signal transmission channel R2 The radio frequency signal received from the antenna by any one of the signal transmission channels of R3 and R4 is subjected to power amplification processing of the power amplifier and down-conversion processing of the mixer to generate a fundamental frequency signal and provide it to the processor 101 .

The above-mentioned multi-channel signal transmission channels transmit and receive signals through antennas. In this embodiment of the present application, the communication device 100 further includes an antenna, and the multiple signal transmission channels are correspondingly coupled to the multiple antennas. The figure schematically shows four antennas ANT1, ANT2, ANT3 and ANT4. In order to improve the quality of signal transmission, when the signal transmission channel TR1 is used as a signal transmission channel to transmit signals, it can be coupled with any one of the antennas ANT1 , ANT2 , ANT3 and ANT4 . Specifically, the processor 101 can monitor the measurement information sent by the network device 20, and the measurement information usually carries the received signal code power (Received Signal Code Power, RSCP) value of each antenna, and the RSCP value is used to indicate the signal of each antenna. Transceiver quality. The processor 101 may couple the signal transmission channel TR1 to one of the antennas based on the RSCP value of each antenna. When the signal transmission channel TR1 is coupled to one of the antennas, the other signal transmission channels R2, R3 and R4 are respectively coupled to the other three antennas. As an example, when the signal transmission channel TR1 is coupled with the antenna ANT1, the signal transmission channels R2, R3, R4 are respectively coupled with the antennas ANT2, ANT3 and ANT4 correspondingly. In this embodiment of the present application, the communication device 100 further includes a switch circuit 103. The switch circuit 103 is coupled between the above signal transmission channels and multiple antennas. The switch circuit 103 includes multiple switches, and the multiple switches are used for multiplexed signals. The connection relationship between the transmission channel and multiple antennas can be switched arbitrarily.

Based on the communication device 100 shown in FIG. 2 , in the scenario shown in FIG. 1 , schematically, when the network interface A1 is the primary network interface and the network interface A2 is the secondary network interface, the processor 101 may transmit the signal to the channel TR1 and signal transmission channel R3 are assigned to network interface A1, and signal transmission channel R2 and signal transmission channel R4 are assigned to network interface A2. Thus, the network interface A1 can transmit signals to and receive signals from the network device 20 based on the signal transmission channel TR1 and the signal transmission channel R3; the network interface A2 can implement signal monitoring based on the signal transmission channel R2 and the signal transmission channel R4. . In addition, in other scenarios, when the network interface A1 is the primary network interface and the network interface A2 is the secondary network interface, the processor 101 may also assign the signal transmission channel TR1 and the signal transmission channel R4 to the network interface A1, and assign the signal transmission channel R2 and the signal transmission channel R3 are assigned to the network interface A2; for another example, the processor 101 may also assign the signal transmission channel TR1 and the signal transmission channel R2 to the network interface A1, and the signal transmission channel R3 and the signal transmission channel R4 to the network interface A2, this embodiment of the present application does not specifically limit this.

In the conventional technology, in a scenario where the terminal device 10 is provided with multiple network interfaces, and one signal transmission channel can be switched between four antennas as a signal transmission channel, in order to realize the coupling between the signal transmission channel and any one of the multiple antennas. , usually a single-pole-four-throw switch and a plurality of single-pole double-throw switches are arranged between the signal transmission channel and multiple antennas, as shown in FIG. 3 . In the structure shown in FIG. 3, it is assumed that when the network interface A1 is the main network interface and the network interface A2 is the secondary network interface, the network interface A1 performs signal transmission and reception based on the signal transmission channel TR1 and the signal transmission channel R3, and the network interface A2 is based on the signal transmission channel. Channel R2 and signal transmission channel R4 are used for signal reception. Assuming that the communication quality of the antenna ANT2 is the best, the signal transmission channel TR1 is coupled to the antenna ANT2 through the SP1 and SP2 switches. In some scenarios, when the signal transmission channel TR1 is coupled to the antenna ANT2, it is assumed that the signal transmission channel R2 is receiving signals through the antenna ANT2 at this time, which causes the signal reception to be interrupted and affects the signal reception of the network interface A2. In other scenarios, when the signal transmission channel TR1 is transmitting signals through the antenna ANT2, the network interface A2 monitors the signal at this time, and uses the signal transmission channel R2 to receive the signal from the antenna. Since the signal transmission channel R2 is only coupled with the antenna ANT2, it can only receive signals through the antenna ANT2, which causes the signal currently being transmitted by the signal transmission channel TR1 to be interrupted, affecting the transmission of the network interface A1 signal. To sum up, when the switch structure shown in Figure 3 is used to realize the coupling between the signal transmission channel TR1 and any antenna, the network interface A1 and the network interface A2 have the problem of antenna preemption, thereby affecting the communication quality of one of the network interfaces, and then Reduce the user experience.

The switch circuit 103 provided by the embodiment of the present application can arbitrarily switch the connection relationship between the multiple signal transmission channels and the multiple antennas, so as to solve the problem of antenna preemption between the network interface A1 and the network interface A2. The multiple switches included in the switch circuit 103 described in the embodiments of the present application may be integrated in the same chip. The chip is coupled with each signal transmission channel and antenna by drawing out corresponding pins. In addition, in other possible implementations, the switch circuit 103 may also be integrated with the RFIC 102 . Taking the RFIC 102 shown in FIG. 2 as an example below, the switch circuit 103 described in the embodiments of the present application will be described through the embodiments shown in FIG. 4 to FIG. 7d .

Please refer to FIG. 4 . FIG. 4 shows a schematic structural diagram of the switch circuit 103 provided by an embodiment of the present application. In FIG. 4, the switch circuit 103 includes a switch K1, a switch K2, and a switch K3. Among them, the switch K1, the switch K2 and the switch K3 are all double-pole double-throw switches. The switch K1 includes contacts d11, d12, d13 and d14, the switch K2 includes contacts d21, d22, d23 and d24, and the switch K3 includes contacts d31, d32, d33 and d34. The signal transmission channel TR1 is coupled to the contact d11 of the switch K1, the signal transmission channel R2 is coupled to the contact d12 of the switch K1, the signal transmission channel R3 is coupled to the contact d22 of the switch K2, and the signal transmission channel R4 is coupled to the contact of the switch K3 d32; in addition, the contact d13 of the switch K1 is coupled to the antenna ANT1, the contact d14 of the switch K1 is coupled to the contact d21 of the switch K2, the contact d23 of the switch K2 is coupled to the antenna ANT2, and the contact d24 of the switch K2 is coupled to the switch Contact d31 of K3, contact d33 of switch K3 are coupled to antenna ANT3, and contact d34 of switch K3 is coupled to antenna ANT4.

As shown in the switch circuit 103 shown in FIG. 4, by setting the switches K1, K2 and K3, when the signal transmission channel TR1 is coupled with any one of the antennas ANT1, ANT2, ANT3 and ANT4, the signal transmission channel R2, the signal transmission channel Both R3 and the signal transmission channel R4 can be correspondingly coupled with the three antennas except the occupied antenna, so as to avoid conflicts caused by preempting the same antenna for multiple signal transmission channels, and improve the stability of signal transmission and reception. Based on the switch structure shown in FIG. 4 , further introduction will be given below through the specific scenarios shown in FIGS. 5 a to 5 d .

Scenario 1: Suppose the processor 101 detects that the current communication quality of the antenna ANT1 is the best based on the Rscp value, the contact d11 of the switch K1 is coupled to the contact d13, and the signal transmission channel TR1 is coupled to the antenna ANT1 through the switch K1. Correspondingly, the contact d12 of the switch K1 is coupled with the contact d14, the contact d21 of the switch K2 is coupled with the contact d23, the signal transmission channel R2 is coupled to the antenna ANT2 through the switch K1 and the switch K2; the contact d22 of the switch K2 is coupled with the contact The point d24 is coupled, the contact d31 of the switch K3 is coupled with the contact d33, the signal transmission channel R3 is coupled to the antenna ANT3 through the switch K2 and the switch K3; the contact d32 of the switch K3 is coupled with the contact d34, and the signal transmission channel R4 is coupled through the switch K3 coupled to antenna ANT4, as shown in Figure 5a.

Scenario 2: Suppose the processor 101 detects that the communication quality of the current antenna ANT2 is the best based on the Rscp value, the contact d11 of the switch K1 is coupled with the contact d14, the contact d21 of the switch K2 is coupled with the contact d23, and the signal transmission channel TR1 passes through Switch K1 and switch K2 are coupled to antenna ANT2. Correspondingly, the contact d12 of the switch K1 is coupled to the contact d13, and the signal transmission channel R2 is coupled to the antenna ANT1 through the switch K1; the contact d22 of the switch K2 is coupled to the contact d24, and the contact d31 of the switch K3 is coupled to the contact d33. , the signal transmission channel R3 is coupled to the antenna ANT3 through the switch K2 and the switch K3; the contact d32 of the switch K3 is coupled to the contact d34, and the signal transmission channel R4 is coupled to the antenna ANT4 through the switch K3, as shown in Figure 5b.

Scenario 3: Suppose the processor 101 detects that the communication quality of the current antenna ANT3 is the best based on the Rscp value, the contact d11 of the switch K1 is coupled with the contact d14, the contact d21 of the switch K2 is coupled with the contact d24, and the contact of the switch K3 is coupled The d31 is coupled to the contact d33, and the signal transmission channel TR1 is coupled to the antenna ANT3 through the switch K1, the switch K2 and the switch K3. Correspondingly, the contact d12 of the switch K1 is coupled to the contact d13, and the signal transmission channel R2 is coupled to the antenna ANT1 through the switch K1; the contact d22 of the switch K2 is coupled to the contact d23, and the signal transmission channel R3 is coupled to the antenna ANT2 through the switch K2. ; The contact d32 of the switch K3 is coupled with the contact d34, and the signal transmission channel R4 is coupled to the antenna ANT4 through the switch K3, as shown in Figure 5c.

Scenario 4: Suppose the processor 101 detects that the communication quality of the current antenna ANT4 is the best based on the Rscp value, the contact d11 of the switch K1 is coupled with the contact d14, the contact d21 of the switch K2 is coupled with the contact d24, and the contact of the switch K3 is coupled The d31 is coupled to the contact d34, and the signal transmission channel TR1 is coupled to the antenna ANT4 through the switch K1, the switch K2 and the switch K3. Correspondingly, the contact d12 of the switch K1 is coupled to the contact d13, and the signal transmission channel R2 is coupled to the antenna ANT1 through the switch K1; the contact d22 of the switch K2 is coupled to the contact d23, and the signal transmission channel R3 is coupled to the antenna ANT2 through the switch K2. ; The contact d32 of the switch K3 is coupled with the contact d33, and the signal transmission channel R4 is coupled to the antenna ANT3 through the switch K3, as shown in Figure 5d.

Referring to FIG. 6 , FIG. 6 shows another schematic structural diagram of the switch circuit 103 provided by the embodiment of the present application. Different from the switch circuit 103 shown in FIG. 4 , the switch circuit 103 shown in FIG. 6 includes two switches, a switch K4 and a switch K5 . Among them, the switch K4 is a three-pole three-throw switch, and the switch K5 is a double-pole double-throw switch. In FIG. 6, switch K4 includes contacts d41, d42, d43, d44, d45, and d46, and switch K5 includes contacts d51, d52, d53, and d54. The signal transmission channel TR1 is coupled to the contact d41 of the switch K4, the signal transmission channel R2 is coupled to the contact d42 of the switch K4, the signal transmission channel R3 is coupled to the contact d43 of the switch K4, and the signal transmission channel R4 is coupled to the contact of the switch K5 d52; in addition, the contact d44 of the switch K4 is coupled to the antenna ANT1, the contact d45 of the switch K4 is coupled to the antenna ANT2, the contact d46 of the switch K4 is coupled to the contact d51 of the switch K5, and the contact d53 of the switch K5 is coupled to the antenna ANT3, the contact d54 of the switch K5 is coupled to the antenna ANT4.

As can be seen from Figure 6, by setting the switch K5 and the switch K6, when the signal transmission channel TR1 occupies any one of the antennas ANT1, ANT2, ANT3 and ANT4, the signal transmission channel R2, the signal transmission channel R3 and the signal transmission channel Channel R4 can be correspondingly coupled with the three antennas except the occupied antenna, so as to avoid conflicts caused by preempting the same antenna for multiple signal transmission channels, and improve the stability of signal transmission. Based on the switch structure shown in FIG. 6 , further introduction will be given below through the specific scenarios shown in FIGS. 7 a to 7 d .

Scenario 5: Suppose the processor 101 detects that the current communication quality of the antenna ANT1 is the best based on the Rscp value, the contact d41 of the switch K4 is coupled to the contact d44, and the signal transmission channel TR1 is coupled to the antenna ANT1 through the switch K4. Correspondingly, the contact d42 of the switch K4 is coupled to the contact d45, and the signal transmission channel R2 is coupled to the antenna ANT2 through the switch K4; the contact d43 of the switch K4 is coupled to the contact d46, and the contact d51 of the switch K5 is coupled to the contact d53. , the signal transmission channel R3 is coupled to the antenna ANT3 through the switch K4 and the switch K5, the contact d52 of the switch K5 is coupled to the contact d54, and the signal transmission channel R4 is coupled to the antenna ANT4 through the switch K5, as shown in Figure 7a.

Scenario 6: Suppose the processor 101 detects that the current communication quality of the antenna ANT2 is the best based on the Rscp value, the contact d41 of the switch K4 is coupled to the contact d45, and the signal transmission channel TR1 is coupled to the antenna ANT2 through the switch K4. Correspondingly, the contact d42 of the switch K4 is coupled to the contact d44, and the signal transmission channel R2 is coupled to the antenna ANT1 through the switch K4; the contact d43 of the switch K4 is coupled to the contact d46, and the contact d51 of the switch K5 is coupled to the contact d53. , the signal transmission channel R3 is coupled to the antenna ANT3 through the switch K4 and the switch K5, the contact d52 of the switch K5 is coupled to the contact d54, and the signal transmission channel R4 is coupled to the antenna ANT4 through the switch K5, as shown in Figure 7b.

Scenario 7: Suppose the processor 101 detects that the communication quality of the current antenna ANT3 is the best based on the Rscp value, the contact d41 of the switch K4 is coupled with the contact d46, the contact d51 of the switch K5 is coupled with the contact d53, and the signal transmission channel TR1 passes through Switch K4 and switch K5 are coupled to antenna ANT3. Correspondingly, the contact d42 of the switch K4 is coupled to the contact d45, and the signal transmission channel R2 is coupled to the antenna ANT2 through the switch K4; the contact d43 of the switch K4 is coupled to the contact d44, and the signal transmission channel R3 is coupled to the antenna ANT1 through the switch K4. , the contact d52 of the switch K5 is coupled with the contact d54, and the signal transmission channel R4 is coupled to the antenna ANT4 through the switch K5, as shown in FIG. 7c.

Scenario 8: Suppose the processor 101 detects that the communication quality of the current antenna ANT4 is the best based on the Rscp value, the contact d41 of the switch K4 is coupled with the contact d46, the contact d51 of the switch K5 is coupled with the contact d54, and the signal transmission channel TR1 passes through Switch K4 and switch K5 are coupled to antenna ANT4. Correspondingly, the contact d42 of the switch K4 is coupled to the contact d45, and the signal transmission channel R2 is coupled to the antenna ANT2 through the switch K4; the contact d43 of the switch K4 is coupled to the contact d44, and the signal transmission channel R3 is coupled to the antenna ANT1 through the switch K4. , the contact d52 of the switch K5 is coupled with the contact d53, and the signal transmission channel R4 is coupled to the antenna ANT3 through the switch K5, as shown in FIG. 7d.

It can be seen from the multiple examples shown in FIGS. 4 to 7d that the switch circuit 103 shown in FIGS. 4 to 5d is set by setting the switch K1 to the switch K3, and the switch circuit 103 shown in FIGS. 6 to 7d is set by setting the switch K5. And switch K6, no matter which antenna the signal transmission channel TR1 is coupled with, other signal transmission channels R2~R4 have other antennas correspondingly coupled, so as to avoid the interruption of signal transmission caused by disconnection of a signal transmission channel from the antenna for a long time , which is beneficial to improve the stability of signal transmission.

It should be noted that the number of switches and types of switches included in the switch circuit 103 shown in the embodiments of the present application are not limited to the embodiments shown in FIGS. The number is flexible. In a possible implementation manner, when the number of signal transmission channels includes n channels, the switch circuit 103 may include n-1 double-pole double-throw switches, where n is an integer greater than or equal to 2, and the n signal transmission channels pass through n - 1 double pole double throw switch coupled to n antennas. For example, in other scenarios, when the number of signal transmission channels includes three, the switch circuit 103 may include two double-pole double-throw switches, and the three signal transmission channels are coupled to three antennas through the two double-pole double-throw switches. In addition, when the number of signal transmission channels is too large, the switch circuit 103 may include a plurality of multi-pole multi-throw switches or a combination of a plurality of multi-pole multi-throw switches. For example, when the RFIC 102 includes five signal transmission channels, the switch circuit 103 may include two three-pole three-throw switches.

Based on the above-mentioned embodiments, the embodiments of the present application further include a controller 104 , the input terminal Vi of the controller 104 is coupled to the processor 101 through a bus, and the output terminal Vo of the controller 104 is connected to the multiple switches in the switch circuit 103 . The control terminal is coupled, as shown in Figure 8. The controller 104 and the switch circuit 103 may be integrated in the same chip. The controller 104 described in this embodiment of the present application may include, but is not limited to, a programmable logic controller (PLC, Programmable Logic Controller), a digital signal processor (DSP, digital signal processor), a discrete device, and the like. The controller 104 may receive indication information from the input terminal Vi, the indication information is transmitted to the controller 104 by the processor 101, and the indication information is used to instruct the signal transmission channel TR1 to be coupled with one of the antennas. The controller 104 generates a control signal to control the on-off state of each switch in the switch circuit 103 based on the indication information provided by the bus. In a specific application, the indication information may include two bits, for example, "00" represents that the signal transmission channel TR1 is coupled to the antenna ANT1, "01" represents that the signal transmission channel TR1 is coupled to the antenna ANT2, and "10" represents that the signal transmission channel TR1 is coupled to the antenna ANT3 is coupled, and "11" represents that the signal transmission channel TR1 is coupled with the antenna ANT4. It should be noted that the above-mentioned indication information may include more or less bits, which are set based on the needs of the scenario, which is not specifically limited in this embodiment of the present application.

Taking the structure of the switch circuit 103 shown in FIG. 6 as an example, the controller according to the embodiment of the present application will be described below with reference to FIG. 9 through a specific scenario. In FIG. 9, the controller 104 includes output terminals Vo1-Vo2, the output terminal Vo1 is coupled to the control terminal Vc1 of the switch K4; the output terminal Vo2 is coupled to the control terminal Vc2 of the switch K5. In addition, the controller 104 also includes an input Vi, which is coupled to the processor 101 . The processor 101 may generate an instruction signal based on the Rscp information sent by the network device 20 and provide the instruction signal to the controller 104 . The indication information is used to indicate that the signal transmission channel TR1 is coupled with the antenna ANT4. Based on the indication information, the controller 104 generates the first control signal and the second control signal and provides them to the switch K4 and the switch K5, respectively. The switch K4 couples the contact d41 with the contact d46 based on the first control signal, the contact d42 with the contact d45, and the contact d43 with the contact d44; the switch K5 couples the contact d51 with the contact based on the second control signal. The point d54 is coupled, and the contact d52 is coupled with the contact d53. At this time, each switch state and the connection state between each signal transmission channel and each antenna are shown in FIG. 7d .

The embodiment of the present application further provides a terminal device 10 , and the specific type of the terminal device 10 can be referred to as described above, which is not repeated here, and the structure of the terminal device 10 can be referred to FIG. 1 . The terminal device 10 may include a plurality of network interfaces (eg, the network interface A1 and the network interface A2 shown in FIG. 1 ) and the communication apparatus 100 shown in FIG. 2 or FIG. 8 . Wherein, the communication device 100 may be provided with the processor 101, the RFIC 102, the switch circuit 103 and multiple antennas as described in the above embodiments. The processor 101 is mainly used to process communication protocols and communication data, control the entire smartphone, execute software programs, and process data of software programs, for example, to support the terminal device 10 to realize various communication functions (such as making calls, send a message or live chat, etc.). When the network interface A1 is used as the primary network interface and the network interface A2 is used as the secondary network interface, the processor 101 is further configured to assign the first signal transmission channel in the RFIC 102 that can both transmit and receive signals to the primary network interface A1, and only A second signal transmission channel for receiving signals is assigned to the secondary network interface A2. In addition, the processor is further configured to obtain the RSCP values of the multiple antennas from the network device, and control the on-off state of each switch in the switch circuit 103 based on the RSCP of each antenna, so that the first signal transmission channel is connected to the first signal transmission channel with the highest RSCP value. An antenna coupling couples the second signal transmission channel with the second antenna. Thus, the primary network interface A1 transmits signals to the network device through the first antenna, and the secondary network interface A2 receives signals from the network device through the second antenna. It should be understood that the terminal device 10 may also include other necessary devices such as memory, input and output devices (eg, a touch screen, a display screen, a keyboard, etc.). This is not repeated in this embodiment of the present application.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A switch circuit, characterized in that it includes a three-channel switch and a third double-pole double-throw switch, wherein the three-channel switch includes any one of the following: a first double-pole double-throw switch and a second double-pole double-throw switch, or Three-pole three-throw switch;

the three-channel switch for selectively coupling the first signal transmission channel of the multiple signal transmission channels to any one of the first antenna, the second antenna and the third double-pole double-throw switch;

The third double-pole double-throw switch is used for further selectively coupling the first signal transmission channel to the third antenna and the fourth signal transmission channel when coupled to the first signal transmission channel through the three-channel switch any of the antennas.
The switch circuit according to claim 1, wherein the three-channel switch comprises the first double-pole double-throw switch and the second double-pole double-throw switch;

The first double-pole double-throw switch is used to couple the first signal transmission channel and the second signal transmission channel of the multiple signal transmission channels to the first antenna and the second double-pole, respectively one of the double throw switches;

The second double-pole double-throw switch is used to further connect the multiple A third signal transmission channel in the signal transmission channel, and one of the first signal transmission channel and the second signal transmission channel are respectively coupled to the second antenna and the third double-pole double-throw switch one of.
The switch circuit according to claim 1, wherein the three-channel switch comprises: the three-pole three-throw switch for selectively connecting the first signal transmission channel, the multi-channel signal transmission channel The second signal transmission channel in and the third signal transmission channel in the multi-channel signal transmission channel are respectively coupled to one of the first antenna, the second antenna and the third double-pole double-throw switch.
The switch circuit according to claim 2 or 3, wherein the third double-pole double-throw switch is specifically used to connect the fourth signal transmission channel in the multi-channel signal transmission channel to the first signal transmission channel. One of the signal transmission channel, the second signal transmission channel, and the third signal transmission channel is coupled to one of the third antenna and the fourth antenna, respectively.
A communication device, characterized by comprising the switch circuit according to any one of claims 1 to 4, and the multiplex signal transmission channel.
The communication device according to claim 5, wherein the first signal transmission channel is used for transmitting signals and receiving signals, and the second signal transmission channel, the third signal transmission channel and the The fourth signal transmission channel is used for receiving signals.
The communication device according to claim 5 or 6, wherein the communication device further comprises the first antenna, the second antenna, the third antenna and the fourth antenna.
The communication device according to any one of claims 5 to 7, wherein the communication device further comprises: a controller for controlling the switching of the three-channel switch and the third double-pole double-throw switch .
A terminal device, characterized in that the terminal device comprises a plurality of network interfaces and the communication device according to any one of claims 5 to 8;

a first network interface of the plurality of network interfaces transmits signals to and receives signals from the network device through the first signal transmission channel;

A second network interface of the plurality of network interfaces receives signals from the network device through at least one of a second signal transmission channel, a third signal transmission channel, and a fourth signal transmission channel in the communication device.
The terminal device according to claim 9, wherein the first network interface and the second network interface belong to different standards.