A wireless communication device and antenna switching method thereof

Abstract

The present application provides a wireless communication device and an antenna switching method thereof, wherein the wireless communication device includes a signal processing module, a switching switch, and a first antenna and a second antenna; the signal processing module includes a first radio frequency channel and a second radio frequency channel; the first antenna and the second antenna are connected to the first radio frequency channel and the second radio frequency channel in a one-to-one correspondence via the switching switch; the first radio frequency channel is used to transmit a first signal, and the second radio frequency channel is used to transmit a second signal; the signal processing module compares the strength of the first signal and the second signal and the performance of the first antenna and the second antenna; if the strength of the first signal is higher and the performance of the first antenna is better, the switching switch is controlled to switch the second antenna to connect to the first radio frequency channel; and the first antenna is switched to connect to the second radio frequency channel. Thus, the signal processing module selects different antennas to balance the signals of the services corresponding to the first communication card and the second communication card, thereby ensuring the communication effect of the first communication card and the second communication card.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a wireless communication device and an antenna switching method thereof. Background Art

[0002] With the improvement of communication protocols, terminal communications need to support 2G, 3G, 4G, and 5G, and the supported specifications are also getting higher and higher, such as 4G CA (Carrier Aggregation, LTE or NR combines multiple frequency bands into a large bandwidth transmission), 5GSA (Standalone, 5G NR independent networking), 5G NSA (Non-Standalone, 5G non-independent networking, NR+LTE dual connection Internet access) and other different specifications. In addition, the number of frequency bands supported by the 3GPP protocol is increasing. For flagship terminals, more frequency bands are supported, not only all domestic frequency bands need to be supported, but also roaming to foreign frequency bands needs to be supported. Therefore, the terminal RF front-end hardware circuit resources are also increasing accordingly.

[0003] To improve the terminal's transceiver performance, a double-pole switch is used for each carrier, enabling both straight-through and crossover configurations. By comparing the RX quality of the two receiving antennas, the antenna with the smallest relative loss is selected for TX transmission. This ensures the best transmission performance, such as EVM and VSWR, and the highest efficiency, while also reducing power consumption during transmission.

[0004] However, in multi-carrier communications, such as LTE or NR CA combinations: HB+LB high-low frequency operating combination, HB carrier uses antenna switch x1, LB uses antenna switch x2; in NSA operating mode, there is a Sub6G+Sub3G high-low frequency carrier operating combination, Sub6G carrier uses antenna switch y1, and Sub3G uses antenna switch y2. Each carrier uses a different switching switch, and the TX of each carrier can select its own optimal antenna.

[0005] The use of dual-SIM terminals has become mainstream in the market, and the requirements for primary and secondary cards are becoming increasingly higher. For example, dual 4G and dual 5G cards allow one card to make calls while the other card can access the Internet. Therefore, both cards have requirements for the terminal's RF front-end hardware resources, and the conflict in the use of hardware resources is correspondingly greater. Summary of the Invention

[0006] The present application provides a wireless communication device and an antenna switching method thereof, so as to improve the communication effect of the wireless communication device.

[0007] In a first aspect, a wireless communication device is provided. The wireless communication device is applied to a communication device, the wireless communication device comprising a signal processing module, a switch, and a first antenna and a second antenna; the signal processing module comprises a first radio frequency channel and a second radio frequency channel; the first antenna and the second antenna are connected to the first radio frequency channel and the second radio frequency channel in a one-to-one correspondence via the switch; wherein the first radio frequency channel is used to transmit a first signal, and the second radio frequency channel is used to transmit a second signal; the first signal is a signal within the operating frequency band of a service corresponding to a first communication card; the second signal is a signal within the operating frequency band of a service corresponding to a second communication card; the signal processing module is used to compare the strengths of the first signal and the second signal, and to compare the performances of the first antenna and the second antenna; if the strength of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the second antenna to connect to the first radio frequency channel; and the first antenna is switched to connect to the second radio frequency channel. In the above technical solution, the signal processing module selects different antennas to balance the signals of the services corresponding to the first and second communication cards, thereby ensuring the communication effect of the first and second communication cards.

[0008] In a specific implementation scheme, the signal processing module is further configured to compare the strengths of the first signal and the second signal at a set frequency, and to compare the performances of the first antenna and the second antenna at the set frequency.

[0009] In a specific implementation, the signal processing module is configured to determine the performance of the first antenna and the second antenna according to the strength of the received signals of the first antenna and the second antenna.

[0010] In a specific implementation manner, the first antenna and the second antenna are selected antennas from among the antennas of the wireless communication device. Antennas with relatively good performance are selected as the first antenna and the second antenna.

[0011] In a specific implementation manner, the first antenna and the second antenna are antennas with higher priorities in the wireless communication device. Antennas with higher priorities are selected as the first antenna and the second antenna.

[0012] In one specific implementation, the signal processing module is further configured to compare the priorities of the first signal and the second signal; if the priority of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to communicate with the first radio frequency channel and the second antenna to communicate with the second radio frequency channel, thereby ensuring communication performance of the main card.

[0013] In a specific possible implementation scheme, the signal processing module also includes an RF transceiver chip; the RF transceiver chip is connected to the first RF channel and the second RF channel respectively; the RF transceiver chip is used to compare the strength of the first signal and the second signal, and to compare the performance of the first antenna and the second antenna; if the strength of the first signal is higher and the performance of the first antenna is better, the switching switch is controlled to switch the second antenna to connect to the first RF channel; and the first antenna is switched to connect to the second RF channel.

[0014] In a specific possible implementation scheme, the RF transceiver chip is also used to compare the priorities of the first signal and the second signal; if the priority of the first signal is higher and the performance of the first antenna is better, the switching switch is controlled to switch the first antenna to connect to the first RF channel and switch the second antenna to connect to the second RF channel.

[0015] In a specific implementation scheme, the first RF channel and the second RF channel respectively include: a power amplifier connected to the RF transceiver chip, a filter connected to the power amplifier, and the filter is connected to the switch.

[0016] In a second aspect, a method for antenna switching of a wireless communication device is provided, wherein the wireless communication device includes a first antenna and a second antenna, and a first radio frequency channel and a second radio frequency channel; wherein the first signal is a signal within an operating frequency band of a service corresponding to a first communication card; the second signal is a signal within an operating frequency band of a service corresponding to a second communication card; the first radio frequency channel is used to transmit the first signal, and the second radio frequency channel is used to transmit the second signal;

[0017] The method comprises the following steps:

[0018] comparing the performance of the first antenna with the performance of the second antenna;

[0019] comparing the intensities of the first signal and the second signal;

[0020] If the strength of the first signal is high and the performance of the first antenna is good, the switch is controlled to switch the second antenna to connect to the first RF channel; the first antenna is switched to connect to the second RF channel. In the above technical solution, the signal processing module selects different antennas to balance the signals of the services corresponding to the first and second communication cards, thereby ensuring the communication effect between the first and second communication cards.

[0021] In a specific possible implementation manner, the method further includes: comparing the strengths of the first signal and the second signal at a set frequency, and comparing the performances of the first antenna and the second antenna at the set frequency.

[0022] In a specific possible implementation, the performance of the first antenna is compared with the performance of the second antenna, specifically:

[0023] The performance of the first antenna and the second antenna is determined according to the received signal strengths of the first antenna and the second antenna.

[0024] In a specific embodiment, the method further comprises:

[0025] comparing priorities of the first signal and the second signal;

[0026] If the priority of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to be connected to the first RF channel and to switch the second antenna to be connected to the second RF channel.

[0027] In a specific implementation manner, the first antenna and the second antenna are antennas with high priorities in the wireless communication device.

[0028] In a fourth aspect, an embodiment of the present application provides a signal processing module, wherein the signal processing module includes a processor for implementing the method described in the second aspect above. The signal processing module may further include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the program instructions stored in the memory, the method described in the second aspect above can be implemented. The signal processing module may further include a communication interface, wherein the communication interface is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other device may be a network device or a terminal device, etc.

[0029] In a specific implementation, the signal processing module includes: a memory for storing program instructions;

[0030] The processor is used to call the instructions stored in the memory so that the device executes the second aspect of the embodiment of the present application and any possible design method of the second aspect.

[0031] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enables the computer to execute the method of the second aspect and any possible design of the second aspect.

[0032] In a sixth aspect, embodiments of the present application further provide a chip system, comprising a processor and further comprising a memory, for implementing the method of the second aspect and any possible design of the second aspect. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0033] In the seventh aspect, an embodiment of the present application also provides a computer program product, including instructions, which, when running on a computer, enables the computer to execute the method of the first aspect and any possible design of the first aspect, or the method of the second aspect and any possible design of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of an application scenario of a wireless communication device;

[0035] Figure 2 A schematic diagram of the structure of a wireless communication device in the prior art;

[0036] Figure 3 A schematic diagram of dual-SIM communication in a wireless communication device in the prior art;

[0037] Figure 4 A structural block diagram of a wireless communication device provided in an embodiment of the present application;

[0038] Figure 5 A structural block diagram of a 2*2 MIMO wireless communication device provided in an embodiment of the present application;

[0039] Figure 6 This is a structural block diagram of the 8*8 MIMO wireless communication device provided in an embodiment of the present application;

[0040] Figure 7a to Figure 7d A reference diagram of the state of the wireless communication device provided in an embodiment of the present application when in use;

[0041] Figure 8 A structural block diagram of antenna selection provided in an embodiment of the present application;

[0042] Figure 9 Flowchart of antenna selection provided for an embodiment of the present application;

[0043] Figure 10 A schematic diagram of antenna selection when a single card is in use according to an embodiment of the present application;

[0044] Figure 11a and Figure 11b A schematic diagram of antenna selection when using dual SIM cards according to an embodiment of the present application;

[0045] Figure 12 Schematic diagram of card 1 and card 2 in standby state;

[0046] Figure 13 Schematic diagram of card 1 and card 2 in voice service and standby states;

[0047] Figure 14 Schematic diagram of card 1 and card 2 in data service and Tai Chi states;

[0048] Figure 15 It is the structural block diagram of the signal processing module;

[0049] Figure 16 A schematic diagram of the structure of a wireless communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] For ease of understanding, the application scenario of the wireless communication device provided in the embodiment of the present application is first explained. The wireless communication device provided in the embodiment of the present application is applied to wireless communication, such as Figure 1 The terminal and base station shown can communicate with each other via antennas. The wireless communication device provided in the embodiment of the present application is applicable to both terminals and base stations, which use a main set of transmitting antennas and a main set of receiving antennas separately.

[0051] It should be understood that the wireless communication device may comply with the wireless communication standards of the Third Generation Partnership Project (3GPP), or may comply with other wireless communication standards, such as the 802 series (such as 802.11, 802.15, or 802.20) of the Institute of Electrical and Electronics Engineers (IEEE). Figure 1 Although only one base station and one terminal are shown in the figure, the wireless communication device may also include other numbers of terminals and base stations. In addition, the wireless communication device may also include other network devices, such as core network devices.

[0052] The terminal and base station should be aware of the predefined configuration of the wireless communication device, including the radio access technology (RAT) supported by the system and the wireless resource configuration specified by the system, such as the basic configuration of the radio frequency band and carrier. These system-predefined configurations can be part of the standard protocol of the wireless communication device or determined through interaction between the terminal and the base station. The content of the relevant standard protocol may be pre-stored in the memory of the terminal and the base station, or embodied in the hardware circuit or software code of the terminal and the base station.

[0053] Base stations usually belong to operators or infrastructure providers, and are operated or maintained by these manufacturers. Base stations can provide communication coverage for a specific geographical area through integrated or external antennas. One or more terminals within the communication coverage area of ​​the base station can access the base station. The base station can also be called a wireless access point (AP) or a transmission reception point (TRP). Specifically, the base station can be a general node B (gNB) in the 5G new radio (NR) system, an evolutionary node B (eNB) in the 4G long term evolution (LTE) system, etc.

[0054] Terminals are more closely associated with users and are also referred to as user equipment (UE), subscriber units (SU), and customer-premises equipment (CPE). Compared to base stations, which are typically located in fixed locations, terminals often move with users and are sometimes referred to as mobile stations (MS). Furthermore, some network devices, such as relay nodes (RN), are sometimes considered terminals because they have UE identities or belong to users. Specifically, terminals can be mobile phones, tablet computers, laptop computers, wearable devices (such as watches, bracelets, helmets, and glasses), and other devices with wireless access capabilities, such as cars, mobile wireless routers, and various Internet of Things (IoT) devices, including smart home devices (such as electricity meters and appliances) and smart city devices (such as surveillance cameras and streetlights).

[0055] With the improvement of communication protocols, terminal communications need to support 2G, 3G, 4G, and 5G, and the supported specifications are also getting higher and higher, such as 4G CA, 5G SA, and 5G NSA. In addition, the number of frequency bands supported by the 3GPP protocol is increasing. Flagship terminals support more frequency bands, not only supporting all domestic frequency bands, but also supporting roaming to foreign frequency bands. Correspondingly, the terminal RF front-end hardware circuit resources are also increasing.

[0056] like Figure 2 As shown, Figure 2The structure of the RF front-end of the existing terminal is shown. It includes an RF transceiver chip and multiple RF circuits. In order to improve the transceiver performance, each RF circuit is connected to two antennas using a double-pole switch. When there are N RF circuits, there are N corresponding double-pole switches. Each double-pole switch can realize a straight-through or cross-connect configuration between the RF circuit and the antenna. When allocating antennas, the quality of RX on the two receiving antennas can be compared to select the antenna with the smallest relative loss for TX transmission. In this way, the antenna transmission performance such as EVM (Error Vector Magnitude) and VSWR (Voltage Standing Wave Ratio) are relatively the best and the efficiency is the highest, while also reducing power consumption during transmission.

[0057] In multi-carrier communications, such as LTE (Long Term Evolution) or NR CA combinations, the HB+LB high- and low-frequency operating combination uses switch 1 for the HB carrier and switch 2 for the LB. In NSA (Non-Standalone, 5G non-independent networking, NR+LTE dual connectivity) operating mode, there is a Sub6G+Sub3G high- and low-frequency carrier operating combination, with switch 3 for the Sub6G carrier and switch 4 for the Sub3G carrier. Each carrier uses a different switch, allowing the TX of each carrier to select its own optimal antenna.

[0058] RF front-end component resources include antennas, switches, duplexers, receive filters, power amplifiers (PAs), and RF transceivers. Integrated components include FEMs (front-end modules), FEMids (front-end modules with integrated duplexers), and MMMB PAs (multi-mode multi-frequency power amplifier modules). For each carrier, when operating in 2x2 MIMO (multi-input multi-output), 4x4 MIMO, or 8x8 MIMO modes, the carrier occupies two, four, or eight receive channels, respectively.

[0059] As the use of dual-SIM terminals becomes mainstream in the market, the specifications of the main and secondary cards are becoming increasingly demanding. For example, in the case where both the main and secondary cards are 4G or 5G, one card can be used for calls while the other can access the Internet. Therefore, both cards have requirements for the terminal's RF front-end hardware resources, and the conflict in hardware resource usage is correspondingly greater.

[0060] The RF front-end frequency band is usually divided into three frequency ranges: LB (700MHz-900MHz), MHB (1400MHz-2700MHz), and UHB (3000MHz-5900MHz). Common frequency bands included in these three ranges are:

[0061] Table 1: Frequency band interval general frequency band table

[0062]

[0063] If two SIM cards operate in the same frequency band, and the RF front-end resources use the same device, for example, the primary SIM card operates in the LTE B1 band and the secondary SIM card operates in the n3 band, both cards use the same antenna. Therefore, conflicts may arise in the antenna switches, PAs, and front-end RF resources corresponding to the two cards. In this case, the user terminal system may need to use time division multiplexing (TDM) or dual SIM dual active (DSDA) mode to activate and allocate channels for the carriers of the two SIM cards.

[0064] refer to Figure 3 , Figure 3 This example illustrates a specific operating state. When a single SIM1 is operating in a CA scenario, its corresponding carrier aggregation is: Band A1, Band A2, Band A3, and Band A5. These four bands have independent double-pole double-throw switches (including switches 1, 2, 3, and 5). Each carrier can use a different antenna through switches 1, 2, 3, and 5. When the status of each antenna changes (such as being touched or held by a person), causing a signal change, each carrier can independently switch to an antenna based on its own energy detection to ensure good communication quality.

[0065] When both SIM cards are in operation, SIM1 works in CA scenario, and the carrier aggregation is: bandA1, BandA2, BandA3, BandA5; SIM2 works in CA scenario, and the carrier aggregation is: bandB1, BandB3, BandB5. Figure 3 As shown in the figure, only the resources corresponding to Band A2 (the two antennas corresponding to switch 2) are used by sim1. When other carriers are operating, the corresponding switches (switch 1, switch 3, and switch 5) will conflict when sim1 and sim2 are operating simultaneously. Therefore, an embodiment of the present application provides a wireless communication device for configuring RF front-end resources to mitigate conflicts between sim1 and sim2. This is described in detail below with reference to the accompanying drawings.

[0066] refer to Figure 4 , Figure 4The wireless communication device provided in an embodiment of the present application is shown. The wireless communication device provided in an embodiment of the present application includes a signal processing module, a switching switch 40 , a first antenna 50 , and a second antenna 60 .

[0067] The signal processing module includes a first radio frequency channel 20 and a second radio frequency channel 30. The first radio frequency channel 20 is used to transmit a first signal, and the second radio frequency channel 30 is used to transmit a second signal; the first signal is a signal within the working frequency band of the service corresponding to the first communication card; the second signal is a signal within the working frequency band of the service corresponding to the second communication card. The above-mentioned first communication card and second communication card can correspond to Figure 3 In addition, the signal processing module further includes a radio frequency transceiver chip 10; the radio frequency transceiver chip 10 is connected to the first radio frequency channel 20 and the second radio frequency channel 30 respectively. The radio frequency transceiver chip 10 is also used to connect to the first communication card and the second communication card.

[0068] The first antenna 50 and the second antenna 60 are connected to the first RF channel 20 and the second RF channel 30 in a one-to-one correspondence through the switching switch 40. The switching switch 40 is a double-pole switch, which can realize that the first RF channel 20 is selectively connected to the first antenna 50 and the second antenna 60, and the second RF channel 30 is selectively connected to the first antenna 50 and the second antenna 60.

[0069] The first RF channel 20 and the second RF channel 30 may include components related to the transmitting and receiving circuits, such as a power amplifier, a filter, or a low-noise amplifier. The configuration of these specific components can be conventional and is not specifically limited herein. For example, the first RF channel 20 and the second RF channel 30 each include: a power amplifier connected to the RF transceiver chip 10; a filter connected to the power amplifier; and the filter connected to the switch 40.

[0070] It should be understood that the above Figure 4 The example only shows a basic structure of the RF front-end circuit. The current RF front-end circuit is complex and the service operation scenarios are also diverse, such as 2*2 MIMO, 4*4 MIMO, and 8*8 MIMO. The terminal may operate in one of these scenarios at a certain time, which is scheduled by the base station, but the UE hardware needs to support the maximum specification of 8*8 MIMO. However, this is not specifically limited in this application. The following describes the structure of the RF front-end circuit in different scenarios with reference to specific figures.

[0071] refer to Figure 5 , Figure 5The schematic diagram shows the structure of the RF front-end circuit in a 2*2 MIMO scenario. The RF front-end circuit includes a first RF channel corresponding to sim1, which includes a power amplifier PA and a low noise amplifier (LNA). The power amplifier and the low noise amplifier are connected to the front-end module FEM through a selection switch. The second RF channel corresponding to sim2 includes a low noise amplifier LNA, which is connected to the front-end module FEM. The two front-end modules FEM are connected to the first antenna ANT0 and the second antenna ANT1 through a double-pole double-throw switch DPDT1 (switching switch). Switching only involves one double-pole double-throw switch DPDT1 configuration instruction. Through straight-through or cross-over, the first antenna ANT0 and the second antenna ANT1 can be selected to be connected to the front-end module FEM respectively.

[0072] When only SIM1 is operating, the RF transceiver chip compares the performance of the first antenna ANT0 and the second antenna ANT1 to determine the antenna with better performance. The antenna with the best performance is then connected to the first RF channel. For example, if the first antenna ANT0 performs better, the first antenna ANT0 is connected to the first RF channel. If the second antenna ANT1 performs better, the second antenna ANT1 is connected to the first RF channel.

[0073] When the RF transceiver chip determines the performance of the first antenna ANT0 and the second antenna ANT1, the optimal antenna can be determined based on the received signal strengths of the first and second antennas ANT0 and ANT1 when the first and second antennas ANT0 and ANT1 are used as receiving antennas. Specifically, by comparing the received signal strengths of the first and second antennas ANT0 and ANT1, the greater the received signal strength, the better the antenna performance. The RF transceiver chip determines the antenna with the best performance by determining the received signal strengths of the first and second antennas ANT0 and ANT1. For example, if the second antenna ANT1 is held while the first antenna ANT0 is not held during terminal use, the performance of the first antenna ANT0 is better, while the performance of the second antenna ANT1 is worse. The determination can be made based on the received signal strengths of the first and second antennas ANT0 and ANT1. For example, if the signal received by the first antenna ANT0 is -80 dBm and the signal received by the second antenna ANT1 is -90 dBm, the performance of the first antenna ANT0 is determined to be better, while the performance of the second antenna ANT1 is worse. When only SIM1 is operating, the first antenna ANT0 can be switched to connect to the first RF channel.

[0074] When sim1 and sim2 are operating simultaneously, a conflict may occur between sim1 and sim2 because only the first antenna ANT0 and the second antenna ANT1 are available. To ensure the normal operation of the services corresponding to sim1 and sim2, the performance of the two antennas must be compared. The double-pole double-throw switch DPDT1 is used to select the first antenna ANT0 and the second antenna ANT1 to match the first and second RF channels, respectively. The double-pole double-throw switch DPDT1 is a selection switch. During matching, the signal processing module first compares the strength of the first and second signals. Specifically, the strength of the first and second signals can be determined by the RF transceiver chip. The first signal is the relatively strong signal received by the first antenna ANT0 and the second antenna ANT1, and the second signal is the relatively strong signal received by the first antenna ANT0 and the second antenna ANT1. For example, in the service corresponding to sim1, the signal strength received by the first antenna ANT0 is -70dBm, and the signal strength received by the second antenna ANT1 is -80dBm, then the first signal is -70dBm; in the service corresponding to sim2, the signal strength received by the first antenna ANT0 is -90dBm, and the signal strength received by the second antenna ANT1 is -100dBm, then the second signal is -90dBm.

[0075] When comparing the strengths of the first and second signals, a threshold value can be set. When the signal strength is greater than the threshold value, the signal is determined to be a higher strength signal; otherwise, it is a weaker strength signal. When determining the strengths of the first and second signals, the first and second signals can be compared with the threshold values ​​respectively. When the strength of the first signal is greater than the threshold value and the strength of the second signal is less than the threshold value, the first signal is determined to be a higher strength signal and the second signal is determined to be a weaker strength signal. Alternatively, the strengths of the first and second signals can be compared.

[0076] When comparing the performance of the first antenna ANT0 and the second antenna ANT1, the signal strength received by the first antenna ANT0 and the second antenna ANT1 can be used for judgment. For example, if the strength of the first signal is high and the performance of the first antenna ANT0 is good, if the first antenna ANT0 is switched to the first RF channel and the second antenna ANT1 is switched to the second RF channel, since the second signal strength corresponding to sim2 is weak, it will not be possible to ensure that the service of sim2 can communicate normally if it is received through the antenna with poor performance. Therefore, in an embodiment of the present application, the control switching switch switches the second antenna ANT1 to connect to the first RF channel and switches the first antenna ANT0 to connect to the second RF channel. So that the signal strength received by the service corresponding to sim1 is -80dBm, and the signal strength received by the service corresponding to sim2 is -90dBm. The signal strength of the service corresponding to Sim1 and the signal strength of the service corresponding to Sim2 are both within a certain signal-to-noise ratio range, ensuring that the services corresponding to Sim1 and Sim2 can communicate normally.

[0077] When the signal processing module performs the above operations, the strength of the first signal and the second signal are compared at the set frequency, and the performance of the first antenna ANT0 and the second antenna ANT1 are compared at the set frequency, so as to ensure that corresponding switching can be performed according to the real-time antenna performance and signal strength.

[0078] In addition, when the first signal and the second signal are both relatively weak or relatively strong, the first antenna ANT0 and the second antenna ANT1 can be selected according to the priority of the first signal and the second signal. Exemplarily, the signal processing module is also used to compare the priorities of the first signal and the second signal. Specifically, the priorities of sim1 and sim2 can be determined. If the priority of sim1 is higher, the priority of the corresponding first signal is higher. If the priority of sim2 is higher, the priority of the corresponding second signal is higher. Exemplarily, if the priority of the first signal is higher and the performance of the first antenna ANT0 is better, the control switching switch switches the first antenna ANT0 to connect to the first RF channel and switches the second antenna ANT1 to connect to the second RF channel. If the priority of the first signal is higher and the performance of the second antenna ANT1 is better, the control switching switch switches the first antenna ANT0 to connect to the second RF channel and switches the second antenna ANT1 to connect to the first RF channel.

[0079] When the signal processing module compares the strength of the first signal and the second signal, it is achieved through the RF transceiver chip. Specifically, the RF transceiver chip is used to compare the priority of the first signal and the second signal; if the priority of the first signal is higher and the performance of the first antenna ANT0 is better, the switching switch is controlled to switch the first antenna ANT0 to be connected to the first RF channel, and switch the second antenna ANT1 to be connected to the second RF channel.

[0080] refer to Figure 6 , Figure 6 The following circuit example shows the structure of a wireless communication device that can implement 8*8 MIMO. The highest specification of a certain frequency band supports 8*8 MIMO. The switch configuration set for working in different scenarios of 2*2 MIMO, 4*4 MIMO, and 8*8 MIMO can be referred to in Table 2.

[0081] Table 2

[0082] Selecting an Antenna Configuration Collection ANT0 DPDT1 pass-through ANT1 DTDT1 crossover, SP4T (port1) ANT2 DTDT1 crossover, SP4T (port2), SPDT1, DPDT2 straight-through ANT3 DTDT1 crossover, SP4T (port2), SPDT1, DPDT2 crossover ANT4 DTDT1 crossover, SP4T (port3), SPDT2, DPDT3 straight-through ANT5 DTDT1 crossover, SP4T (port3), SPDT2, DPDT3 crossover ANT6 DTDT1 crossover, SP4T (port4), SPDT3, DPDT4 straight-through ANT7 DTDT1 crossover, SP4T (port4), SPDT3, DPDT4 crossover

[0083] Referring to Table 1, when sim1 uses 8x8 MIMO, eight different antennas, ANT0 through ANT7, can be selected using the aforementioned method. Specifically, the power amplifier (PA) of the first RF channel can select any of ANT0 through ANT7 using the switch configuration described in Table 1. Pairs ANT0 and ANT1, ANT2 and ANT3, ANT4 and ANT5, and ANT6 and ANT7 are equivalent to the first and second antennas, and DTDT1 through DTDT4 are equivalent to switches. SPDT1 through SPDT3 are single-pole double-throw switches, and SP4T is a single-pole four-throw switch. The four switching points, from top to bottom, are port 1 through port 4. The power amplifier (PA) selects different antennas by coordinating SP4T with SPDT1 through SPDT3.

[0084] For example, when the service corresponding to sim1 and the service corresponding to sim2 are in different frequency bands, there is no conflict between sim1 and sim2, and the switch can be selected at will. For example, the service corresponding to sim1 can use antennas ANT0, ANT1, ANT2, and ANT3, and the service corresponding to sim2 can use antennas ANT4 and ANT5; then sim1 can use DPDT1 and DPDT2 to select the antenna with better performance between ANT0 and ANT1, and between ANT2 and ANT3, and sim2 can use DPDT3 to select the antenna with better performance between ANT4 and ANT5. If the service corresponding to sim1 and the service corresponding to sim2 are in the same frequency band, such as the service corresponding to sim1 can use antennas ANT0, ANT1, ANT2, and ANT3, and the service corresponding to sim2 can use antennas ANT2 and ANT3; then it is necessary to follow Figure 5 In the manner shown in , according to the comparison results of the strength of the first signal and the second signal and the performance of antennas ANT2 and ANT3, DPDT2 selects ANT2 and ANT3 to be configured to sim1 and sim2. For specific configuration rules, please refer to Figure 5 The relevant description in will not be repeated here.

[0085] The first and second antennas are selected from the antennas of the wireless communication device. Exemplarily, the RF transceiver chip can select a set of backup antennas from the antennas in the wireless communication device, and the selection can be based on different rules. For example, the antennas can be selected randomly or in a certain order, or the received signal strength recorded by each antenna when receiving a signal can be used to select the antenna with the highest received signal strength as the backup antenna. A portion of the antennas can also be selected as the backup antenna set according to set conditions. The above-mentioned set conditions can be set in different ways. For example, the set conditions can select the backup antenna set according to the priority set in the wireless communication device. In this case, the first and second antennas are the antennas with the highest priority in the wireless communication device.

[0086] As an example, see Figure 7a to Figure 7d The terminal detects that the current terminal is in a certain state through various detection means. Different switching antenna sets are pre-set for each state. Among them, the terminal states include: phone mode, down-hand holding mode, horizontal screen mode for playing games with both hands, flip screen, folding screen mode, etc. The sensors set in the terminal identify various modes, and each mode pre-defines the priority selection of each antenna set.

[0087]

[0088] In the above-mentioned morphological changes, the terminal selects the best antenna combination. In the subsequent business operation, the antenna is dynamically selected in the latest antenna set according to the antenna optimization selection strategy.

[0089] refer to Figure 8 For example, a 2x2 MIMO receiver circuit can be configured to implement standard dual-antenna optimization in each configuration. The corresponding antennas include ANT0 through ANT3. The terminal selects two of these antennas, ANT A and ANTB, as the first and second antennas. Subsequent services are optimized using these two antennas.

[0090] refer to Figure 9 The present application embodiment provides a flow chart of antenna selection. During the product business operation, the antenna switches used in the actual business operation are registered, and a periodic review of each switching strategy is defined. Based on the evaluation results, whether to perform antenna switch optimization selection is executed.

[0091] First, after each SIM card starts the service, the antenna channel of each carrier currently on the SIM card is extracted, and then the antenna channel of each carrier currently on the SIM card is extracted, and the antenna switch usage mark of each carrier working is extracted. Figure 3In the structural block diagram shown, sim1 operates in a CA scenario with carrier aggregation of bands A1, A2, A3, and A5. sim2 operates in a CA scenario with carrier aggregation of bands B1, B3, and B5. Based on the antenna channels of each carrier, four switches—Switch 1, 2, 3, and 5—are extracted and used as antenna priority switches. These four switches are registered and formed into a switch set. When selecting an antenna, each switch, or the registered switches, is evaluated based on the switching strategy. The switching status of each switch in the set is determined, assessing whether to switch in single-SIM or dual-SIM scenarios. If the antenna switching conditions are met, the switch is switched, implementing antenna optimization.

[0092] If the service changes, the working frequency band combination, etc., the extraction is performed again. For example, if sim1 switches to a new service, the switch corresponding to sim1's new service is re-marked. For each of the above-mentioned sim cards, the switch mark is updated in real time and registered in the switch status set maintained by the system. The RF transceiver chip generates an interrupt at regular intervals. The time is customized by the system. The purpose of each interrupt is to perform a switching evaluation on each switch or the registered switch. The above-mentioned timed interruption enables the RF transceiver chip to judge the performance of the antenna and the services of sim1 and sim2 according to the set frequency. Different switch sets can be selected according to the service updates of sim1 and sim2, or the switches can be controlled to switch according to the performance of the antenna.

[0093] The following describes in detail the strategy used by the two switches when switching. This strategy includes the following steps:

[0094] Step 001: Compare the performance of the first antenna with the performance of the second antenna;

[0095] Specifically, the performance of the first antenna and the second antenna is determined according to the received signal strength of the first antenna and the second antenna. Figure 5 Related description in .

[0096] Step 002: Compare the strengths of the first signal and the second signal;

[0097] Specifically, the signals received by the first antenna and the second antenna are compared to determine the strength of the first signal and the second signal. For a specific comparison method, please refer to Figure 5 Related description in .

[0098] Step 003: If the strength of the first signal is high and the performance of the first antenna is good, control the switch to switch the second antenna to connect to the first radio frequency channel; and switch the first antenna to connect to the second radio frequency channel.

[0099] For details, please refer to Figure 5 The relevant description in will not be repeated here.

[0100] Step 004: Compare the strengths of the first signal and the second signal at the set frequency, and compare the performances of the first antenna and the second antenna at the set frequency.

[0101] For details, please refer to Figure 5 as well as Figure 9 The relevant description in will not be repeated here.

[0102] Step 005: Compare the priorities of the first signal and the second signal;

[0103] For details, please refer to Figure 5 Related description in .

[0104] Step 006: If the priority of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to connect to the first radio frequency channel and the second antenna to connect to the second radio frequency channel.

[0105] The above-mentioned method for selecting an antenna will be described in detail below with reference to specific drawings.

[0106] All object switches implement a unified switching strategy, and the switching goal is to maximize the ability for each card to actively switch to the desired switch.

[0107] Each switch has two working states during operation: only one card uses the switch, or both cards use the switch. For example, when one card is used, SIM1 can use the switch, or SIM2 can use the switch. When two cards are used, SIM1 and SIM2 use the switch at the same time.

[0108] When only one card is used, the strategy is to count the energy of each receiving antenna in the past period of time according to the time window. A timed interrupt is performed and after the interruption, it is evaluated whether the TX antenna has the better performance among the two receiving antennas. If not, the antenna switching action is initiated. Figure 3 Taking the scenario shown as an example, if only sim1 is in use for switch 2, the performance of the two switches corresponding to switch 2 is determined, and the antenna with better performance is given to sim1.

[0109] When two SIM cards work together, there are two different scenarios: using a high- and low-frequency combination, and using both cards in the same frequency band. When using a high- and low-frequency combination, the dual-SIM combination is identified and configured as a high- and low-frequency combination. This means each card has a complete RX receive circuit, and the antenna path is multiplexed via a frequency divider. No receive antenna selection is required. The optimal antenna is selected for the TX card, primarily for the TX service. The strategy for this scenario is the same as for using a single SIM card using a switch. However, when two SIM cards work in the same frequency band, there is a direct conflict between the two SIM cards. In the hardware RX channel, the dual antenna circuits each occupy an RX path, and the optimal antenna is selected for the card with the highest priority.

[0110] First reference Figure 10 When a single card or dual cards use a certain object switch without conflict, that is, when a certain object switch is used by only one card, in this scenario, the user has complete RX RF channel resources, and the antenna with the smallest loss is selected for TX to improve transmission efficiency and performance and reduce UE power consumption.

[0111] refer to Figure 11a and Figure 11b ,When the two cards use a switch for a certain object and conflicts, a receiving channel is allocated to each card in this scenario, and the best antenna is selected for the card with the highest service score (the card with the highest priority), e.g. Figure 11a As shown in , at a certain moment, card 1 (main card) has the highest evaluation and antenna 1 has the best performance, so antenna 1 is selected as the main card; Figure 11b As shown in FIG. 1 , at a certain moment, card 1 has the highest evaluation and antenna 2 has the best performance, so antenna 2 is selected for the master card. That is, the best antenna is always selected for the TX of the master card with the highest evaluation.

[0112] There are four main dual-SIM working scenario combinations: standby + standby, voice service + standby, data service + standby, and voice service + data.

[0113] like Figure 12 and Figure 13 As shown, Figure 12 and Figure 13 The horizontal axis represents time. In actual work, the terminal is in the standby + standby state during most of the working time, and is in the business + standby state in very few working time scenarios.

[0114] like Figure 12 As shown in , card 1 and card 2 are both in standby state for most of the time; Figure 13 As shown, in a very rare time, one of Card 1 and Card 2 is in service state, while the other is in standby state. The service type combination is divided into three scenarios: standby + standby, voice service + standby, data service + standby, and voice service + data.

[0115] When SIM1 and SIM2 are in standby mode, the vast majority of the dual-SIM standby time is in TDM (time-division multiplexing) mode, making simultaneous operation of both SIMs relatively rare. This means both SIMs are receiving data most of the time, eliminating the need for antenna switching. Therefore, when a high-priority SIM card conflicts with a low-priority SIM card, the high-priority SIM card prioritizes the higher-performance antenna. See Table 3 for the switching strategy.

[0116] Table 3

[0117] Card 1 signal Card 2 signal Priority judgment Antenna Selection weak weak Same priority No cutting antenna powerful powerful Same priority No cutting antenna weak powerful Card 1 Card 1 cut antenna powerful weak Card 2 Card 2 cut antenna

[0118] As shown in Table 2, when both SIM cards are in standby mode, the weaker signal is prioritized. When switching antennas, the weaker signal is prioritized, matching the stronger antenna to the weaker signal. Before switching, the signal strengths of SIM card 1 (the first signal) and SIM card 2 (the second signal) are compared. If the first signal is stronger, indicating the first antenna's performance, the switch is controlled to switch the second antenna to the first RF channel, allocating the weaker signal to the higher-performing antenna. Similarly, if the second signal is stronger, indicating the first antenna's performance, the switch is controlled to switch the first antenna to the first RF channel, allocating the weaker signal to the higher-performing antenna.

[0119] When SIM1 is in voice mode and SIM2 is in standby mode, voice service has a higher priority in this scenario, as the voice experience is most directly and sensitively impacted by the user. On the one hand, if the voice card lacks antenna switching capabilities and the uplink antenna is damaged, such as in handheld scenarios or when uplink power is limited, even at maximum transmit power, the base station's reception threshold may not be met, resulting in inaudible voice. On the other hand, the received signal is also weak, resulting in poor voice quality for the end user. Therefore, the card in voice service has a higher priority. Table 4 describes the antenna switching strategy for these scenarios.

[0120] Table 4

[0121] Card 1 signal Card 2 signal Priority judgment Antenna Selection voice Standby Card 1 Card 1 Standby voice Card 2 Card 2

[0122] When SIM1 is in data service mode and SIM2 is in standby mode, the card in standby mode may receive incoming calls at any time, and missed calls are a more direct user experience. Therefore, the card in standby mode is given a higher priority. Furthermore, to enable the TX function of the service to select the optimal antenna, improving communication throughput and reducing power consumption, antenna switching is also supported for the data card.

[0123] During the switching process, since the standby time is relatively low compared to the data service, the standby card has the highest priority and is the first to switch when it is working. After the work is completed, the switch switching right is transferred to the business card. When the business card is in TX, the antenna is preferred. During the time window when the business card prefers the antenna, the standby card is not working. Figure 14 As shown, the standby card switches the antenna to its optimal path in advance, as indicated by the arrow, at the start of each operation. During its inactivity periods, such as t1, t2, and t3, the data service card has the right to switch, enabling autonomous TX switching. The switching strategy remains the same for all cards in use, enabling simultaneous antenna optimization for both cards.

[0124] When sim1 is for voice service and sim2 is for data service, in this scenario, since voice service is more important to the user, the card for voice service has a relatively high priority.

[0125] In one example, Figure 15 As shown, the signal processing module 1000 is used to implement the functions of the terminal device in the above-mentioned method. The signal processing module 1000 can be a terminal device or a device within the terminal device. The signal processing module 1000 includes at least one processor 1001, which is used to implement the functions of the device in the above-mentioned method. For example, the processor 1001 can be used to create a three-dimensional model based on the basic information of the buried urban lifeline in the city. For details, please refer to the detailed description of the method and will not be explained here.

[0126] In some embodiments, the signal processing module 1000 may further include at least one memory 1002 for storing program instructions and / or data. The memory 1002 is coupled to the processor 1001. The coupling in the embodiment of the present application is an interval coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 1002 may also be located outside the signal processing module 1000. The processor 1001 may operate in conjunction with the memory 1002. The processor 1001 may execute program instructions stored in the memory 1002. At least one of the at least one memory may be included in the processor.

[0127] In some embodiments, the signal processing module 1000 may further include a communication interface 1003 for communicating with other devices via a transmission medium, thereby enabling the apparatus in the signal processing module 1000 to communicate with the other devices. For example, the communication interface 1003 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. The processor 1001 utilizes the communication interface 1003 to send and receive data and implement the methods of the above embodiments. For example, the communication interface 1003 may be used to transmit signals.

[0128] In one example, the signal processing module 1000 is used to implement the functions of the modules in the above method. The signal processing module 1000 can be a network device or a device within the network device. The signal processing module 1000 includes at least one processor 1001, which is used to implement the functions of the modules in the above method. For example, the processor 1001 can be used to determine the performance of the first antenna and the second antenna. For details, please refer to the detailed description of the method and will not be further described here.

[0129] In some embodiments, the signal processing module 1000 may further include at least one memory 1002 for storing program instructions and / or data. The memory 1002 is coupled to the processor 1001. The coupling in the embodiment of the present application is an interval coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 1002 may also be located outside the signal processing module 1000. The processor 1001 may operate in conjunction with the memory 1002. The processor 1001 may execute program instructions stored in the memory 1002. At least one of the at least one memory may be included in the processor.

[0130] In some embodiments, signal processing module 1000 may further include a communication interface 1003 for communicating with other devices via a transmission medium, thereby enabling the apparatus in signal processing module 1000 to communicate with other devices. Exemplarily, communication interface 1003 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. Processor 1001 utilizes communication interface 1003 to transmit and receive data and implement the methods described in the above embodiments. Exemplarily, communication interface 1003 may transmit subchannel indications, resource pool indications, and the like.

[0131] The embodiment of the present application does not limit the connection medium between the communication interface 1003, the processor 1001 and the memory 1002. For example, in the embodiment of the present application Figure 15The memory 1002, the processor 1001 and the communication interface 1003 may be connected via a bus, which may be divided into an address bus, a data bus, a control bus and the like.

[0132] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0133] In an embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in an embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0134] The methods provided in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, they 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. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, an SSD).

[0135] Figure 16 The wireless communication device provided in the embodiment of the present application. The wireless communication device may be a terminal or a base station in the embodiment of the present application. Figure 16 As shown, the wireless communication device includes a main body 100, and is arranged in the main body 100. The main body 100 may include an application subsystem 104, a memory 103 (memory), a large-capacity storage 105 (massive storage), a baseband subsystem 102, a radio frequency integrated circuit 101 (radio frequency intergreted circuit, RFIC), a radio frequency front end (radio frequency front end, RFFE) device 106, and an antenna (ANT). These devices can be coupled through various interconnection buses or other electrical connection methods.

[0136] Figure 16In the figure, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer greater than 1. Tx represents the transmit path, and Rx represents the receive path. Different numbers represent different paths. FBRx represents the feedback receive path, PRx represents the main receive path, and DRx represents the diversity receive path. HB represents high frequency, and LB represents low frequency. The two refer to the relative high and low frequencies. BB represents baseband. It should be understood that Figure 16 The marks and components are for illustration purposes only and are only used as one possible implementation method. The embodiments of the present application also include other implementation methods.

[0137] The RF integrated circuit 101 can be further divided into an RF receive path and an RF transmit path. The RF receive path can receive an RF signal through an antenna, process the RF signal (such as amplification, filtering and down-conversion) to obtain a baseband signal, and pass it to the baseband subsystem 102. The RF transmit path can receive a baseband signal from the baseband subsystem 102, perform RF processing (such as up-conversion, amplification and filtering) on ​​the baseband signal to obtain an RF signal, and finally radiate the RF signal into space through an antenna. Specifically, the RF subsystem may include electronic devices such as an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer, a local oscillator (LO), and a filter. These electronic devices can be integrated into one or more chips as needed. The antenna can sometimes also be considered as part of the RF subsystem.

[0138] The baseband subsystem 102 can extract useful information or data bits from the baseband signal, or convert the information or data bits into a baseband signal to be sent. These information or data bits can be data representing user data such as voice, text, video, or control information. For example, the baseband subsystem 102 can implement signal processing operations such as modulation and demodulation, encoding and decoding. Different wireless access technologies, such as 5G NR and 4G LTE, often have different baseband signal processing operations. Therefore, in order to support the integration of multiple mobile communication modes, the baseband subsystem 102 can simultaneously include multiple processing cores or multiple HACs. The baseband subsystem 102 is generally integrated into one or more chips, and the chip that integrates the baseband subsystem 102 is generally called a baseband integrated circuit (BBIC).

[0139] Furthermore, since RF signals are analog signals, the signals processed by baseband subsystem 102 are primarily digital signals, and the wireless communication device also requires an analog-to-digital converter. Analog-to-digital converters include analog-to-digital converters (ADCs) that convert analog signals into digital signals, and digital-to-analog converters (DACs) that convert digital signals into analog signals. In the embodiments of the present application, the analog-to-digital converter can be located in either baseband subsystem 102 or the RF subsystem.

[0140] The application subsystem 104 can serve as the main control system or main computing system of the wireless communication device, running the main operating system and application programs, managing the software and hardware resources of the entire wireless communication device, and providing a user interface. The application subsystem 104 may include one or more processing cores. In addition, the application subsystem 104 may also include driver software related to other subsystems (such as the baseband subsystem 102). The baseband subsystem 102 may also include one or more processing cores, a hardware accelerator (HAC), a cache, etc.

[0141] In an embodiment of the present application, the RF subsystem may include an independent antenna, an independent RF front-end (RF frontend, RFFE) device 106, and an independent RF integrated circuit 101. The RF integrated circuit 101 is sometimes also referred to as a receiver, a transmitter, or a transceiver. The antenna, the RF front-end device 106, and the RF processing chip can all be manufactured and sold separately. Of course, the RF subsystem may also use different devices or different integration methods based on power consumption and performance requirements. For example, some devices belonging to the RF front end are integrated into the RF integrated circuit 101, or even the antenna and the RF front-end device 106 are integrated into the RF integrated circuit 101. The RF integrated circuit 101 may also be referred to as an RF antenna module or antenna module.

[0142] In the embodiment of the present application, the baseband subsystem 102 can be implemented as a standalone chip, which can be referred to as a modem chip. The hardware components of the baseband subsystem 102 can be manufactured and sold as a modem chip. Modem chips are sometimes also referred to as baseband chips or baseband processors. Furthermore, the baseband subsystem 102 can be further integrated into a SoC chip, manufactured and sold as a SoC chip. The software components of the baseband subsystem 102 can be built into the chip's hardware components before the chip leaves the factory, or can be imported from other non-volatile memory 105 into the chip's hardware components after the chip leaves the factory. Alternatively, these software components can be downloaded and updated online via a network.

[0143] It should be understood that in the solutions provided herein, the wireless communication device may be a communication device or a component within a wireless communication device, such as an integrated circuit 101 product, such as a chip, a chip combination, or a module including a chip. The wireless communication device may be a computer device that supports wireless communication capabilities.

[0144] Specifically, the wireless communication device can be a terminal such as a smart terminal, or a wireless access network device such as a base station. Functionally, the chips used for wireless communication can be divided into baseband chips and radio frequency integrated circuits 101. Baseband chips are also called modems or baseband processing chips. Radio frequency integrated circuits 101 are also called transceiver chips, radio frequency transceivers, or radio frequency processing chips. Therefore, the wireless communication device can be a single chip or a combination of multiple chips, such as a system chip, a chip platform, or a chip set.

[0145] A system chip is also called a system on a chip (SoC), or simply a SoC chip. It can be understood as packaging multiple chips together to form a larger chip. For example, a baseband chip can be further packaged in a SoC chip. A chip platform or chip set can be understood as multiple chips that need to be used together. These multiple chips are often independently packaged, but the chips need to cooperate with each other when working to complete the wireless communication function. For example, a baseband chip (or a SoC chip with an integrated baseband chip) and a radio frequency integrated circuit 101 are usually packaged separately, but need to be used together.

[0146] Regardless of whether the wireless communication device is a base station or a terminal, the above method can be used to perform switching to improve the communication effect of the wireless communication device.

[0147] Obviously, those skilled in the art may make various modifications and variations to this application without departing from the scope of protection of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A wireless communication device, characterized in that: It includes a signal processing module, a switch, a first antenna and a second antenna; The signal processing module includes a first radio frequency channel and a second radio frequency channel; The first antenna and the second antenna are connected to the first radio frequency channel and the second radio frequency channel in a one-to-one correspondence via the switching switch; wherein the first radio frequency channel is used to transmit a first signal, and the second radio frequency channel is used to transmit a second signal; the first signal is a signal within the operating frequency band of the service corresponding to the first communication card; and the second signal is a signal within the operating frequency band of the service corresponding to the second communication card; The signal processing module is used to compare the strength of the first signal and the second signal, and to compare the performance of the first antenna and the second antenna; If the strength of the first signal is high and the performance of the first antenna is good, the switch is controlled to switch the second antenna to connect to the first radio frequency channel; and the first antenna is switched to connect to the second radio frequency channel.

2. The wireless communication device according to claim 1, wherein The signal processing module is further configured to compare the strengths of the first signal and the second signal according to a set frequency, and to compare the performances of the first antenna and the second antenna according to the set frequency.

3. The wireless communication device according to claim 1, wherein The signal processing module is used to determine the performance of the first antenna and the second antenna according to the received signal strength of the first antenna and the second antenna.

4. The wireless communication device according to any one of claims 1 to 3, wherein: The first antenna and the second antenna are selected antennas from among the antennas of the wireless communication device.

5. The wireless communication device according to claim 4, wherein The first antenna and the second antenna are antennas with high priorities in the wireless communication device.

6. The wireless communication device according to any one of claims 1 to 3, wherein: The signal processing module is further configured to compare priorities of the first signal and the second signal; If the priority of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to be connected to the first RF channel and to switch the second antenna to be connected to the second RF channel.

7. The wireless communication device according to claim 6, wherein: The signal processing module further includes a radio frequency transceiver chip; the radio frequency transceiver chip is connected to the first radio frequency channel and the second radio frequency channel respectively; The RF transceiver chip is used to compare the strength of the first signal and the second signal, and to compare the performance of the first antenna and the second antenna; if the strength of the first signal is higher and the performance of the first antenna is better, controlling the switching switch to switch the second antenna to connect to the first RF channel; and switching the first antenna to connect to the second RF channel.

8. The wireless communication device according to claim 7, wherein: The RF transceiver chip is also used to compare the priorities of the first signal and the second signal; if the priority of the first signal is higher and the performance of the first antenna is better, the switching switch is controlled to switch the first antenna to connect to the first RF channel and switch the second antenna to connect to the second RF channel.

9. The wireless communication device according to claim 8, wherein The first RF channel and the second RF channel respectively include: a power amplifier connected to the RF transceiver chip, a filter connected to the power amplifier, and the filter is connected to the switch.

10. An antenna switching method for a wireless communication device, characterized in that: The wireless communication device includes a first antenna and a second antenna, and a first radio frequency channel and a second radio frequency channel; the first radio frequency channel is used to transmit a first signal, and the second radio frequency channel is used to transmit a second signal; wherein the first signal is a signal within the operating frequency band of the service corresponding to the first communication card; and the second signal is a signal within the operating frequency band of the service corresponding to the second communication card; The method comprises the following steps: comparing the performance of the first antenna with the performance of the second antenna; comparing the intensities of the first signal and the second signal; If the strength of the first signal is high and the performance of the first antenna is good, the switching switch is controlled to switch the second antenna to connect to the first radio frequency channel; and the first antenna is switched to connect to the second radio frequency channel.

11. The antenna switching method according to claim 10, wherein: Also includes: The strengths of the first signal and the second signal are compared at a set frequency, and the performances of the first antenna and the second antenna are compared at the set frequency.

12. The antenna switching method according to claim 10 or 11, characterized in that: Comparing the performance of the first antenna with the performance of the second antenna is specifically: The performance of the first antenna and the second antenna is determined according to the received signal strengths of the first antenna and the second antenna.

13. The antenna switching method according to claim 10 or 11, characterized in that: The method further comprises: comparing priorities of the first signal and the second signal; If the priority of the first signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to be connected to the first RF channel and to switch the second antenna to be connected to the second RF channel.

14. The antenna switching method according to claim 13, wherein: The first antenna and the second antenna are antennas with high priorities in the wireless communication device.

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