WO2022160306A1 - Wireless communication apparatus and antenna switching method therefor - Google Patents

Abstract

Provided are a wireless communication apparatus and an antenna switching method therefor. The wireless communication apparatus comprises a signal processing module, a switching switch, a first antenna and a second antenna, wherein 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 by means of the switching switch in a one-to-one correspondence manner; the first radio-frequency channel is used for transmitting a first signal, and the second radio-frequency channel is used for transmitting a second signal; the signal processing module compares the strength of the first signal with the strength of the second signal, and the performance of the first antenna with the performance of the second antenna; and 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 be connected to the first radio-frequency channel, or switch the first antenna to be connected to the second radio-frequency channel. Therefore, different antennas are selected by means of a signal processing module, so as to balance signals of services corresponding to a first communication card and a second communication card, thereby ensuring the communication effect of the first communication card and the second communication card.

Description

A wireless communication device and antenna switching method thereof technical field

The present application relates to the field of communication technologies, and in particular, to a wireless communication device and an antenna switching method thereof.

Background technique

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

In order to improve the transceiver performance of the terminal, each carrier uses a double-pole switch, which can realize the configuration mode of straight-through and crossover. By detecting the quality comparison of RX on the two receiving antennas, the antenna with the smallest relative loss is selected for TX transmission. The transmitting performance of the antenna, such as EVM and VSWR, is relatively the best, and the efficiency is the highest, and the power consumption during transmission is also reduced.

But in multi-carrier communication, such as LTE or NR CA combination: HB+LB high and low frequency working combination, HB carrier uses an antenna switch x1, LB uses an antenna switch x2; such as NSA working mode, there are Sub6G+Sub3G high and low frequency carriers Working combination, Sub6G carrier uses an antenna switch y1, sub3G uses an antenna switch y2; each carrier uses a different switch, and the TX of each carrier can choose its own best antenna.

The use of dual-card terminals has become the mainstream of the market, and the demand and specifications of primary and secondary cards are also getting higher and higher, such as dual 4G, dual 5G, one card can call at the same time, the other card can access the Internet, etc. The terminal radio frequency RF front-end hardware resources have usage requirements, and accordingly the conflict of hardware resource usage is greater.

SUMMARY OF THE INVENTION

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.

A first aspect provides a wireless communication device, the wireless communication device is applied in the communication device, the wireless communication device 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 through the switch; wherein, the first radio frequency channel It is used to transmit the first signal, and the second radio frequency channel is used to transmit the second signal; the first signal is the signal in the working frequency band of the service corresponding to the first communication card; the second signal is the second communication card The signal in the working frequency band of the corresponding service; the signal processing module is used to compare the strength of the first signal and the second signal, and 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, then the switch is controlled to switch the second antenna to be connected to the first radio frequency channel; switch the first antenna to connected to the second radio frequency channel. In the above technical solution, by using the signal processing module to select different antennas to balance the signals of the services corresponding to the first communication card and the second communication card, the communication effect of the first communication card and the second communication card is guaranteed.

In a specific implementation, the signal processing module is further configured to compare the intensities of the first signal and the second signal according to a set frequency, and compare the first antenna and the second signal according to the set frequency the performance of the second antenna.

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

In a specific implementation, the first antenna and the second antenna are selected part of the antennas of the wireless communication device. Select antennas with better performance as the first antenna and the second antenna.

In a specific implementation, the first antenna and the second antenna are antennas with high priority in the wireless communication device. Antennas with higher priorities are selected as the first antenna and the second antenna.

In a 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, the first antenna If the performance is better, the switch is controlled to switch the first antenna to communicate with the first radio frequency channel, and to switch the second antenna to communicate with the second radio frequency channel. Ensure the communication effect of the main card.

In a specific implementation, the signal processing module further includes a radio frequency transceiver chip; the radio frequency transceiver chip is respectively connected to the first radio frequency channel and the second radio frequency channel; the radio frequency transceiver chip is used for comparison The strengths of the first signal and the second signal, and comparing the performance of the first antenna and the second antenna; if the strength of the first signal is higher, the performance of the first antenna is better , the switch is controlled to switch the second antenna to be connected to the first radio frequency channel; to switch the first antenna to be connected to the second radio frequency channel.

In a specific implementation, the radio frequency transceiver core is further configured to compare the priorities of the first signal and the second signal; if the priority of the first signal is higher, the first antenna If the performance is better, the switch is controlled to switch the first antenna to communicate with the first radio frequency channel, and to switch the second antenna to communicate with the second radio frequency channel.

In a specific implementation, the first radio frequency channel and the second radio frequency channel respectively include: a power amplifier connected to the radio frequency transceiver chip, a filter connected to the power amplifier, and the filter connected to the switch.

In a second aspect, an antenna switching method for a wireless communication device is provided, the wireless communication device includes a first antenna and a second antenna, and is used for a first radio frequency channel and a second radio frequency channel; wherein the first signal is the signal in the working frequency band of the service corresponding to the first communication card; the second signal is the signal in the working frequency band of the service corresponding to the second communication card; the first radio frequency channel is used to transmit the first signal, the The second radio frequency channel is used for transmitting the second signal;

The method includes 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 higher and the performance of the first antenna is better, the switch is controlled to switch the second antenna to be connected to the first radio frequency channel; Switch to connect with the second RF channel. In the above technical solution, by using the signal processing module to select different antennas to balance the signals of the services corresponding to the first communication card and the second communication card, the communication effect of the first communication card and the second communication card is guaranteed.

In a specific implementation, the method further includes: comparing the intensities of the first signal and the second signal according to a set frequency, and comparing the first antenna and the first signal according to the set frequency performance of two antennas.

In a specific implementation, comparing the performance of the first antenna with the performance of the second antenna, 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.

In a specific embodiment, the method further comprises:

comparing 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 be connected to the first radio frequency channel, and the second antenna is connected to the first radio frequency channel. The antenna is switched into communication with the second radio frequency channel.

In a specific implementation, the first antenna and the second antenna are antennas with high priority in the wireless communication device.

In a fourth aspect, an embodiment of the present application provides a signal processing module, where the signal processing module includes a processor for implementing the method described in the second aspect above. The signal processing module may also 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 also include a communication interface, the communication interface is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module or other types of communication interfaces. It can be a network device or a terminal device, etc.

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

The processor is configured to invoke the instructions stored in the memory, so that the apparatus executes the second aspect and any possible design method of the second aspect in the embodiments of this application.

In a fifth aspect, embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the second aspect and any possible design method of the second aspect.

In a sixth aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor, and may also include a memory, for implementing the second aspect and any possible design method of the second aspect. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a seventh aspect, the embodiments of the present application further provide a computer program product, including instructions that, when executed on a computer, cause the computer to execute the first aspect and any possible design method of the first aspect, or the second Aspect and any one possible design method of the second aspect.

Description of drawings

1 is a schematic diagram of an application scenario of a wireless communication device;

2 is a schematic structural diagram of a wireless communication device in the prior art;

3 is a schematic diagram of dual-card communication of a wireless communication device in the prior art;

FIG. 4 is a structural block diagram of a wireless communication device provided by an embodiment of the present application;

FIG. 5 is a structural block diagram of a wireless communication device in 2*2 MIMO provided by an embodiment of the present application;

FIG. 6 is a structural block diagram of a wireless communication device in 8*8 MIMO provided by an embodiment of the present application;

7a to 7d are reference diagrams of states of the wireless communication device provided by the embodiments of the present application when in use;

FIG. 8 is a structural block diagram of antenna selection provided by an embodiment of the present application;

FIG. 9 is a flowchart of antenna selection provided by an embodiment of the present application;

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

FIG. 11a and FIG. 11b are schematic diagrams of antenna selection in a dual-card use state according to an embodiment of the present application;

12 is a schematic diagram of card 1 and card 2 in a standby state;

Fig. 13 is the schematic diagram that card 1 and card 2 are in voice service and standby state;

Fig. 14 is the schematic diagram that card 1 and card 2 are in data service and Tai Chi state;

Fig. 15 is the structural block diagram of the signal processing module;

FIG. 16 is a schematic structural diagram of a wireless communication apparatus according to an embodiment of the present application.

Detailed ways

For the convenience of understanding, an application scenario of the wireless communication apparatus provided by the embodiments of the present application will be described first. The wireless communication apparatus provided in the embodiment of the present application is applied to wireless communication. As shown in FIG. 1 , a terminal and a base station can communicate with each other through an antenna. The wireless communication apparatus provided by the embodiments of the present application can be applied to both terminals and base stations, and these terminals and base stations adopt separate settings of the main set of transmit antennas and the main set of receive antennas.

It should be understood that the wireless communication device may comply with the wireless communication standard of the third generation partnership project (3GPP), or may comply with other wireless communication standards, such as the Institute of Electrical and Electronics Engineers (IEEE) ) of the 802 series (such as 802.11, 802.15, or 802.20) wireless communication standards. Although only one base station and one terminal are shown in FIG. 1 , the wireless communication apparatus may also include other numbers of terminals and base stations. In addition, the wireless communication apparatus may further include other network equipment, such as core network equipment.

The terminal and the base station should know 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 pre-defined configurations may be part of standard protocols for wireless communication devices, or may be determined through interactions between terminals and base stations. The content of the relevant standard protocol may be pre-stored in the memory of the terminal and the base station, or embodied as hardware circuits or software codes of the terminal and the base station.

Base stations are usually owned by operators or infrastructure providers, who are responsible for operation or maintenance. Base stations can provide communication coverage for specific geographic areas through integrated or external antennas. One or more terminals located within the communication coverage of the base station can access the base station. A base station may also be called an access point (AP), or a transmission reception point (TRP). Specifically, the base station may be a general node B (generation Node B, gNB) in a 5G new radio (new radio, NR) system, or an evolutional Node B (evolutional Node B, eNB) in a 4G long term evolution (long term evolution, LTE) system. )Wait.

The terminal is more closely related to the user, and is also called user equipment (user equipment, UE), or subscriber unit (subscriber unit, SU), user-premises equipment (customer-premises equipment, CPE). Compared with the base station, which is usually placed in a fixed location, the terminal often moves with the user, and is sometimes called a mobile station (mobile station, MS). In addition, some network devices, such as relay nodes (relay nodes, RNs), can sometimes be regarded as terminals because they have UE identity or belong to users. Specifically, the terminal can be a mobile phone, a tablet computer, a laptop computer, a wearable device (such as a watch, a bracelet, a helmet and glasses), and other devices with wireless access capable devices, such as cars, mobile wireless routers, and various Internet of things (IOT) devices, including various smart home devices (such as electricity meters and appliances) and smart city devices (such as surveillance cameras and street lights), etc.

With the improvement of communication protocols, terminal communication needs to support 2G, 3G, 4G, 5G, and the supported specifications are getting higher and higher, such as 4G CA, 5G SA, 5G NSA, and the number of frequency bands supported by the 3GPP protocol is increasing. The terminal supports more frequency bands, not only supports all domestic frequency bands, but also needs to support roaming to foreign frequency bands, correspondingly, the terminal RF front-end hardware circuit resources are also increasing.

As shown in FIG. 2 , FIG. 2 shows the structure of the radio frequency front end of the existing terminal. It includes a radio frequency transceiver chip and multiple radio frequency circuits. In order to improve the transceiver performance, each radio frequency circuit uses a double-pole switch to connect with two antennas. When there are N multiple radio frequency circuits, there are N corresponding double-pole switches. Each double-pole switch can realize a straight-through or cross-over configuration between the RF circuit and the antenna. When allocating antennas, the antenna with the smallest relative loss can be selected for TX transmission by detecting the quality comparison of RX on the two receiving antennas, so that the transmission performance of the antenna is such as EVM (Error Vector Magnitude, error vector magnitude), VSWR ( Voltage Standing Wave Ratio, voltage standing wave ratio) is relatively the best, the highest efficiency, and also reduces the power consumption during transmission.

Under multi-carrier communication, such as LTE (Long Term Evolution, Long Term Evolution) or NR CA combination: HB+LB high and low frequency working combination, HB carrier uses switch 1, LB uses switch 2; such as NSA (Non-Standalone, 5G Non-independent networking, NR+LTE dual connection to Internet) working mode, there are Sub6G+Sub3G high and low frequency carrier working combination, Sub6G carrier uses switch 3, sub3G uses switch 4; each carrier uses a different switch, and the TX of each carrier You can choose the best antenna for each.

The RF front-end device resources include: antenna, switch, transceiver duplexer, receive filter, power amplifier PA, radio frequency transceiver (Transceiver) and so on. Integrated devices include FEM (Front-end Modules, front-end modules), FEMid (FEMiD front-end modules with integrated duplexers), MMMB PA (Multi-Mode Multi-Frequency Power Amplifier Module, multi-mode multi-frequency power amplifiers) and so on. For each carrier, when it works in 2*2MIMO (Multi Input Multi Output), 4*4MIMO, 8*8MIMO and other different modes, the carrier occupies 2, 4, and 8 receiving channels respectively.

As the use of dual-card terminals has become the mainstream of the market, the demand and specifications of the main card and the auxiliary card are also increasing. For example, the main card and the auxiliary card are both 4G or 5G. At the same time, the other card can access the Internet, etc., so the two cards have requirements for the use of the terminal RF front-end hardware resources, and correspondingly, the conflict between the use of hardware resources is greater.

The RF front-end frequency band is usually divided into three frequency ranges according to the frequency dimension: LB (700MHz～900MHz), MHB (1400MHz～2700MHz), UHB (3000MHz～5900MHz). The commonly used frequency bands included in these three ranges are:

Table 1: General frequency band table for frequency range

If the working channels of the two cards are in the same frequency range, because the RF front-end resources are the same devices, for example, the main card works in LTE B1, and the secondary card works in the n3 frequency band. These two cards work with the same antenna, so the two cards correspond to The antenna switch, PA, and front-end RF resource use will conflict. At this time, the system of the user terminal may use time-sharing (TDM), DSDA (dual sim dual active, dual card dual standby) mode for the carrier of the two cards. Activation and assignment of channels.

Referring to FIG. 3, FIG. 3 illustrates a specific working state. When a single sim1 works, sim1 works in the CA scenario, and its corresponding carrier aggregation is: bandA1, BandA2, BandA3, and BandA5. These four frequency bands have independent double-pole double-throw switches (including switch 1, switch 2, and switch 3). and switch 5), each carrier can use a different antenna through switch 1, switch 2, switch 3 and switch 5. When the state of the respective antenna changes (such as being touched by a human body, being held by a hand, etc.), resulting in a signal change, each carrier can independently perform antenna switching selection according to its own energy detection to ensure a good communication effect.

When both cards are in working state, sim1 works in the CA scenario, and the carrier aggregation is: bandA1, BandA2, BandA3, and BandA5; sim2 works in the CA scenario, and the carrier aggregation is: bandB1, BandB3, and BandB5. Referring to what is shown in FIG. 3 , only the resources corresponding to BandA2 (two antennas corresponding to switch 2 ) are only used by sim1 . When other carriers work, the corresponding switches (switch 1, switch 3, switch 5) will conflict when sim1 and sim2 work at the same time. To this end, an embodiment of the present application provides a wireless communication device to configure radio frequency front-end resources and improve the situation of conflict between sim1 and sim2 during operation. The detailed description will be given below with reference to the specific drawings.

Referring to FIG. 4 , FIG. 4 shows a wireless communication apparatus provided by an embodiment of the present application. The wireless communication apparatus provided by an embodiment of the present application includes a signal processing module, a switch 40 , and a first antenna 50 and a second antenna 60 .

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 the first signal, and the second radio frequency channel 30 is used to transmit the second signal; the first signal is the signal in the working frequency band of the service corresponding to the first communication card; the second signal is the second signal The signal in the working frequency band of the service corresponding to the communication card. The above-mentioned first communication card and second communication card may correspond to sim1 and sim2 in FIG. 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. And the radio frequency transceiver chip 10 is also used for connecting with the first communication card and the second communication card.

The first antenna 50 and the second antenna 60 are connected to the first radio frequency channel 20 and the second radio frequency channel 30 in one-to-one correspondence through the switch 40. The switch 40 is a double-pole switch, which can realize the selection of the first radio frequency channel 20 and the first radio frequency channel 20. An antenna 50 is connected to the second antenna 60 , and the second radio frequency channel 30 is alternatively connected to the first antenna 50 and the second antenna 60 .

The first radio frequency channel 20 and the second radio frequency channel 30 may include devices such as power amplifiers, filters or low noise amplifiers related to the transmitting circuit and the receiving circuit. Make specific restrictions. Exemplarily, the first radio frequency channel 20 and the second radio frequency channel 30 respectively include: a power amplifier connected to the radio frequency transceiver chip 10 , a filter connected to the power amplifier, and the filter connected to the switch 40 .

It should be understood that the example shown in Figure 4 above is only a basic structure of the RF front-end circuit, and the current RF front-end circuit is complex, and the service working scenarios are also varied, such as 2*2MIMO, 4*4MIMO, 8*8MIMO, and possible In a certain period of time, the terminal works in one of the scenarios, which is scheduled by the base station, but the hardware of the UE needs to support the maximum specification of 8*8 MIMO. However, it is not specifically limited in this application, and the structure of the lines of the radio frequency front end in different scenarios will be described below with reference to the specific drawings.

Referring to FIG. 5 , FIG. 5 shows a schematic structural diagram of a radio frequency front-end circuit in a 2*2 MIMO scenario. The radio frequency front-end circuit includes a first radio frequency channel corresponding to sim1 including a power amplifier PA and a low noise amplifier (LNA), and the power amplifier and the low noise amplifier are connected to the front-end module FEM through a selection switch. The second radio frequency channel corresponding to sim2 includes a low noise amplifier LNA, and the low noise amplifier 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 (transfer switch). The switching only involves a configuration command of a double-pole double-throw switch DPDT1, and the first antenna ANT0 and the second antenna ANT1 can be selected to be respectively connected to the front-end module FEM through straight-through or cross-over.

When only sim1 works, the radio frequency transceiver chip compares the performance of the first antenna ANT0 and the second antenna ANT1 to determine an antenna with better performance. And connect the antenna with the best performance to the first RF channel. Exemplarily, if the performance of the first antenna ANT0 is relatively good, the first antenna ANT0 is controlled to be connected to the first radio frequency channel, and if the performance of the second antenna ANT1 is relatively good, the second antenna ANT1 is controlled to be connected to the first radio frequency channel.

When the radio frequency transceiver chip judges the performance of the first antenna ANT0 and the second antenna ANT1, when the first antenna ANT0 and the second antenna ANT1 are used as the receiving antenna, it can be determined according to the received signal strength of the first antenna ANT0 and the second antenna ANT1. 's antenna. Specifically, by comparing the received signal strength between the first antenna ANT0 and the second antenna ANT1, the greater the received signal strength, the better the performance of the antenna. The radio frequency transceiver chip determines the antenna with the best performance by judging the received signal strength of the first antenna ANT0 and the second antenna ANT1. Exemplarily, if the second antenna ANT1 is held and the first antenna ANT0 is not held when the terminal is in use, the performance of the first antenna ANT0 is better and the performance of the second antenna ANT1 is poor. The signal strengths received by the first antenna ANT0 and the second antenna ANT1 can be judged. Exemplarily, when it is detected that the signal received by the first antenna ANT0 is -80dBm and the signal received by the second antenna ANT1 is -90dBm, Then it is judged that the performance of the first antenna ANT0 is good, and the performance of the second antenna ANT1 is poor. When only sim1 works, the first antenna ANT0 can be switched to be connected to the first radio frequency channel.

When sim1 and sim2 work at the same time, since there are only the first antenna ANT0 and the second antenna ANT1, a conflict occurs between sim1 and sim2. In order to ensure the normal operation of the services corresponding to sim1 and sim2, it is necessary to compare the performance of the two antennas, and select the first antenna ANT0 and the second antenna ANT1 through the double-pole double-throw switch DPDT1 to match the first and second RF channels respectively. . Wherein, the above-mentioned double-pole double-throw switch DPDT1 is a selection switch. When performing matching, the signal processing module first compares the intensities of the first signal and the second signal. Specifically, the strength of the first signal and the second signal can be determined by the radio frequency transceiver chip, where the first signal is a relatively strong signal received by the first antenna ANT0 and the second antenna ANT1, and the second signal is the first antenna The relatively strong signal received in ANT0 and the second antenna ANT1. Exemplarily, 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, so the first signal is -70dBm; in the service corresponding to sim2, the first signal strength is -70dBm. The signal strength received by the antenna ANT0 is -90dBm, the signal strength received by the second antenna ANT1 is -100dBm, and the second signal is -90dBm.

When comparing the strengths of the first signal and the second signal, a threshold value can be set, and when the signal strength is greater than the threshold value, it is determined that the signal is a signal with higher strength, otherwise it is a signal with weaker strength. When judging the strength of the first signal and the second signal, the first signal and the second signal can be compared with the threshold value respectively. When the strength of the first signal is greater than the threshold value, the strength of the second signal is lower than the threshold value. value, the first signal is considered to be a signal of higher strength, and the second signal is considered to be a signal of weaker strength. Or compare the intensities of the first signal and the second signal.

When comparing the performances of the first antenna ANT0 and the second antenna ANT1, it can be determined by the received signal strength of the first antenna ANT0 and the second antenna ANT1. Exemplarily, 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 radio frequency channel, and the second antenna ANT1 is switched to the second radio frequency channel, since sim2 corresponds to The second signal strength of the sim2 is weak, and then receiving it through an antenna with poor performance, it will not be able to guarantee the normal communication of the sim2 business. Therefore, in the embodiment of the present application, the switch is controlled to switch the second antenna ANT1 to be connected to the first radio frequency channel, and to switch the first antenna ANT0 to be connected to the second radio frequency channel. So that the received signal strength of the service corresponding to sim1 is -80dBm, and the received signal strength of 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, which ensures that the services corresponding to sim1 and sim2 can communicate normally.

When the signal processing module performs the above operations, the intensities of the first signal and the second signal are compared according to the set frequency, and the performances of the first antenna ANT0 and the second antenna ANT1 are compared according to the set frequency. In order to ensure that the corresponding switching can be carried out according to the real-time antenna performance and signal strength.

In addition, when both the first signal and the second signal are relatively weak or both are relatively strong, the first antenna ANT0 and the second antenna ANT1 may 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 determined. The priority 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 switch is controlled to switch the first antenna ANT0 to be connected to the first radio frequency channel, and switch the second antenna ANT1 to be connected to the first radio frequency channel. The two radio frequency channels are connected. If the priority of the first signal is higher and the performance of the second antenna ANT1 is better, then the money changer switch is controlled to switch the first antenna ANT0 to be connected to the second radio frequency channel, and the second antenna ANT1 to be connected to the first radio frequency channel Connected.

When the signal processing module compares the intensities of the first signal and the second signal, it is realized by the radio frequency transceiver chip. Specifically, the radio frequency transceiver core is used to compare the priority of the first signal and the second signal; if the priority of the first signal higher, the performance of the first antenna ANT0 is better, then the switch is controlled to switch the first antenna ANT0 to communicate with the first radio frequency channel, and switch the second antenna ANT1 to communicate with the second radio frequency channel.

Referring to FIG. 6, FIG. 6 shows a schematic structural diagram of a wireless communication device capable of implementing 8*8 MIMO. The following circuit is an example of a certain frequency band that supports 8*8 MIMO at the highest specification, and can refer to Table 2 for the set of switch configurations that work in different scenarios of 2*2 MIMO/4*4 MIMO/8*8 MIMO.

Table 2

choose an antenna	configuration collection
ANT0	DPDT1 pass-through
ANT1	DTDT1 Crossover, SP4T(port1)
ANT2	DTDT1 crossover, SP4T(port2), SPDT1, DPDT2 pass-through
ANT3	DTDT1 crossover, SP4T(port2), SPDT1, DPDT2 crossover
ANT4	DTDT1 crossover, SP4T(port3), SPDT2, DPDT3 pass-through
ANT5	DTDT1 cross, SP4T (port3), SPDT2, DPDT3 cross
ANT6	DTDT1 crossover, SP4T(port4), SPDT3, DPDT4 pass-through
ANT7	DTDT1 crossover, SP4T(port4), SPDT3, DPDT4 crossover

Referring to Table 1, when sim1 adopts 8*8 MIMO, 8 different antennas such as ANT0 to ANT7 can be selected by the above method, that is, the power amplifier PA of the first RF channel can be selected through the switch configuration in Table 1. ANT0 to ANT7 any of the antennas. Among them, ANT0 and ANT1, ANT2 and ANT3, ANT4 and ANT5, ANT6 and ANT7, which appear in pairs, may be equivalent to the first antenna and the second antenna, and DTDT1 to DTDT4 may be equivalent to switching switches. While SPDT1~SPDT3 are single-pole double-throw switches, SP4T is a single-pole four-throw switch, and the ratio of the four switching points from top to bottom is port1~port4. The power amplifier PA can choose different antennas through the cooperation of SP4T and SPDT1-SPDT3.

Exemplarily, 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. Exemplarily, the services corresponding to sim1 can use antennas ANT0, ANT1, ANT2, and ANT3, and the services corresponding to sim2 can use antennas ANT4 and ANT5; then sim1 can use DPDT1 and DPDT2 to select between ANT0 and ANT1, and between ANT2 and ANT3. Select the antenna with better performance, sim2 can select the antenna with better performance of ANT4 and ANT5 through DPDT3. If the service corresponding to sim1 and the service corresponding to sim2 are in the same frequency band, for example, 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; In the way shown, according to the strength of the first signal and the second signal and the comparison results of the performances of the antennas ANT2 and ANT3, select ANT2 and ANT3 to configure sim1 and sim2 through DPDT2. For specific configuration rules, please refer to the relevant description in Figure 5 , and will not be repeated here.

The above-mentioned first antenna and second antenna are selected part of the antennas of the wireless communication device. Exemplarily, the radio frequency transceiver chip may select a spare antenna set from the antennas in the wireless communication device, and the selection may be based on different rules. For example, the antennas can be randomly selected or selected in turn in a certain order, or the received signal strength recorded by each antenna when receiving signals can be used first, and the antenna with the highest received signal strength can be selected as the backup antenna. It is also possible to filter a part of the antennas as the backup antenna set according to the setting conditions. The above setting conditions can be set differently. For example, the setting conditions can select the backup antenna set according to the priority set in the wireless communication device. The first antenna and the second antenna are antennas with high priority in the wireless communication device.

As an example, referring to Figures 7a to 7d, the terminal detects that the current terminal is in a certain form through various detection means, and each form has preset different switching antenna sets, wherein the terminal forms are: phone mode, hand-held mode , When playing games, hold the horizontal screen mode with both hands, flip screen, folding screen mode, etc., various modes are identified by the sensors set in the terminal, and each mode is pre-defined and each antenna set is preferred.

In the above morphological changes, the terminal selects the best antenna combination, and in the subsequent service work process, according to the antenna optimization selection strategy, the antenna dynamic selection is implemented in the latest antenna set.

Referring to FIG. 8 , the form of the 2*2 MIMO receiving circuit is exemplified, and each form changes to a standard dual-antenna optimal selection form. The corresponding antennas include ANT0 to ANT3, two of which are selected by the terminal, ANT A and ANTB, as the first antenna and the second antenna, and the two antennas are used to perform antenna optimization selection operations for subsequent services.

Referring to FIG. 9 , an embodiment of the present application provides a schematic flowchart of an antenna screening process. In the process of product business work, register according to the antenna switches used in the actual work of the business, define and review each switching strategy periodically, and decide whether to optimize the selection of antenna switches according to the evaluation results.

First, after each sim card starts the service, it extracts the antenna channel of each current carrier of the sim card, and then extracts the antenna channel of each current carrier, and extracts the use mark of the antenna switch of each carrier. Exemplarily, referring to the structural block diagram shown in FIG. 3 , sim1 works in the CA scenario, and the carrier aggregation is: bandA1, BandA2, BandA3, and BandA5; sim2 works in the CA scenario, and the carrier aggregation is: bandB1, BandB3, and BandB5. Four switches such as switch 1, switch 2, switch 3, and switch 5 are extracted from the antenna channel of each carrier, and the above four switches are used as antenna priority switches. The above four switches are registered and used as a set of switches. When selecting an antenna, switching evaluation is performed on each switch or on the registered switches according to the switching strategy. Judge the switching status in the switch set one by one, and evaluate whether the switch needs to be switched in a single-card or dual-card scenario. If the antenna switching condition is satisfied, the switch switching action is performed to realize antenna optimization.

If the service changes and the working frequency band combination changes, it will be extracted again. Exemplarily, if sim1 switches to a new service, the switch corresponding to the new service of sim1 is re-marked. The switch flags that are interrupted and updated in real time for the above-mentioned sim cards are registered in the switch state set maintained by the system. The radio frequency transceiver chip generates interrupts regularly, and the time is customized by the system. The purpose of each interrupt is to perform switching evaluation for each switch or the registered switches. The above timing interruption enables the radio frequency transceiver chip to judge the performance of the antenna and the services of sim1 and sim2 according to the set frequency. In order to select different switch sets according to the service update of sim1 and sim2, or control the switch to switch according to the performance of the antenna.

The strategies adopted by the two switches when switching are specifically described below. The strategy includes the following steps:

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

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. For details, refer to the related description in FIG. 5 .

Step 002: compare the intensities of the first signal and the second signal;

Specifically, the signals received by the first antenna and the second antenna are compared to determine the strengths of the first signal and the second signal. For a specific comparison method, reference may be made to the relevant description in FIG. 5 .

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 with the first radio frequency channel; switch the first antenna to connect to the second radio frequency channel.

For details, reference may be made to the related description in FIG. 5 , which is not repeated here.

Step 004: Compare the intensities of the first signal and the second signal according to the set frequency, and compare the performance of the first antenna and the second antenna according to the set frequency.

For details, reference may be made to the related descriptions in FIG. 5 and FIG. 9 , which are not repeated here.

Step 005: compare the priorities of the first signal and the second signal;

For details, refer to the related description in FIG. 5 .

Step 006: If the priority of the first signal is higher and the performance of the first antenna is better, control the switch to switch the first antenna to be connected to the first radio frequency channel, and to switch the second antenna to be connected to the second radio frequency channel .

The above-mentioned antenna selection method will be described in detail below with reference to the specific drawings.

All object switches implement a unified switching strategy, and the switching goal is to maximize each card to automatically switch the switch it wants.

For any switch, there are two working states in the working process, only one card uses the switch, or two cards use the switch together. Exemplarily, when a card is used, the switch can be used by sim1, or the switch can be used by sim2. When using dual cards, sim1 and sim2 use this switch at the same time.

The strategy when only one card is used is to count the energy of each receiving antenna in the past period of time according to the time window. The timing is interrupted, and after the interruption, it is evaluated whether the antenna of the TX is the antenna with better performance among the two receiving antennas, and if not, the antenna switching action is started. Taking the scenario shown in Figure 3 as an example, for switch 2 only sim1 is in use, the performance of the two switches corresponding to switch 2 is judged, and the antenna with better performance is used for sim1.

When the dual cards work together, there are two different situations: the dual cards are a combination of high and low frequency bands, and the dual cards work in the same frequency range. When the dual card is a combination of high and low frequency bands, when the scene is identified, the working section of the dual card combination is a combination of high and low frequency, that is to say, each card has a complete RX receiving circuit, and the antenna path is multiplexed through the frequency divider. For the receive antenna, no selection is required. Mainly serve the card with TX business, and choose the best antenna for TX. The strategy in this scenario is the same as the above-mentioned strategy of using the switch for a single card. However, when the dual cards work in the same frequency range, it is a direct conflict for the dual cards. On the hardware RX channel, for the dual antenna circuit, each occupies an RX channel, and the best antenna is selected for the card with high priority.

Referring to Figure 10 first, when a single card or dual cards use a certain object switch without conflict, that is, when a certain object switch is only used by one card, in this scenario, the user has complete RX RF channel resources, then select the loss for TX The smallest antenna improves transmission efficiency and performance, and reduces UE power consumption.

Referring to Figure 11a and Figure 11b, when dual cards use a certain object switch conflict, in this scenario, each dual card is allocated a receiving channel, and the best antenna is selected for the card with the highest service score (the card with the highest priority), such as As shown in Figure 11a, at a certain time card 1 (main card) has the highest evaluation and antenna 1 has the best performance, then the main card selects antenna 1; as shown in Figure 11b, at a certain time card 1 has the highest evaluation, and antenna 2 If the performance is the best, choose Antenna 2 for the main card. That is, always choose the best antenna for the TX of the highest rated host card.

There are four main scenarios for dual-card working scene combinations: standby + standby, voice service + standby, data service + standby, and voice service + data.

As shown in Figure 12 and Figure 13, the horizontal axis in Figure 12 and Figure 13 is time. In actual work, the terminal is in the standby+standby state during most of the working hours, and the terminal is in a very few working hours. In business + standby state.

As shown in FIG. 12 , both cards 1 and 2 are in the standby state most of the time; as shown in FIG. 13 , one of the cards 1 and 2 is in the business state in very few times. , the other card in Card 1 or Card 2 is in standby. The service type combination is divided into three scenarios: standby+standby, voice service+standby, data service+standby, and voice service+data.

When sim1 and sim2 are in the standby state, in this scenario, most of the standby time of the dual-card is TDM (time-sharing mode), and the probability of the dual-card working at the same time is relatively low. In this scenario, that is to say, most of the dual-card All times are double-received, and there is no need to switch antennas. Therefore, when the high-priority card and the low-priority card work and collide at the same time, the high-priority card first selects the antenna with higher performance. Refer to Table 3 for the handover strategy.

table 3

Card 1 signal		Card 2 signal	priority judgment	Antenna option
weak	weak	same priority	Do not cut the antenna
powerful	powerful	same priority	Do not cut the antenna
weak	powerful		Card 1	Card 1 Cut Antenna
powerful	weak		Card 2	Card 2 Cut Antenna

It can be seen from Table 2 that when both cards are in the standby state, the signal with weaker strength is determined with a higher priority. Match to weaker signals. Before switching, compare the strength of the signal of card 1 (first signal) and the signal of card 2 (second signal). If the strength of the first signal is higher and the performance of the first antenna is better, control the A toggle switch switches the second antenna into connection with the first radio frequency channel so that the weaker signal can be distributed to the higher performance antenna. Similarly, if the second signal is higher and the performance of the first antenna is better, the switch is controlled to switch the first antenna to the first radio frequency channel, so that the weaker signal can be allocated to the antenna with higher performance.

When sim1 is in the voice state and sim2 is in the standby state, in this scenario, the voice is relatively high priority, and the voice experience is the most direct and sensitive to the user. In the hand-holding scenario, in the scenario where the uplink power is limited, although the maximum power is transmitted, it does not meet the receiving threshold requirements of the base station. As a result, the other party cannot hear the sound. On the other hand, the received signal is also very weak, and the end user can hear the other party. The sound quality will also be poor. Therefore, the priority corresponding to the card in the voice service is higher. Refer to Table 4 for the strategy for antenna switching in the above scenario.

Table 4

Card 1 signal		Card 2 signal	priority judgment	Antenna option
voice	Standby		Card 1	Card 1
Standby	voice		Card 2	Card 2

When sim1 is a data service and sim2 is in a standby state, in this scenario, because the card in the standby state may have a call at any time, missing a call is a more direct user experience to the user. Therefore, the card in the standby state has a relatively high priority. In addition, in order to enable the TX of the service to select the best antenna, improve the communication throughput rate and reduce the power consumption, it also supports switching the antenna to the data card.

When switching, due to the relatively low proportion of working time in standby compared to data services, the standby card has the highest priority, and it switches the switch first when it is working; after the work is completed, the switch switching right is transferred to the business card, and when the business card is in TX, Antennas are preferred. When the service card selects the time window of the antenna, the standby card is not working. As shown in Figure 14, each time the standby card starts to work, as indicated by the arrow, it switches the antenna switch to its own optimal antenna path in advance. During the non-working period, such as t1, t2, t3, when the standby card is not working, the data service card has the switch switching right to realize the autonomous switching of the TX switch. The switching strategy is the same when the same card is used, so as to achieve The dual-card simultaneous antenna optimization strategy is adopted.

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

In an example, as shown in FIG. 15 , the signal processing module 1000 is used to implement the function of the terminal device in the above method, and the signal processing module 1000 may be a terminal device or a device in the terminal device. The signal processing module 1000 includes at least one processor 1001 for implementing the functions of the apparatus in the above method. For example, the processor 1001 may be configured to establish a three-dimensional model according to the acquired basic information of the urban lifeline buried in the city. For details, please refer to the detailed description in the method, which will not be described herein again.

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

In some embodiments, the signal processing module 1000 may further include a communication interface 1003 for communicating with other devices through a transmission medium, so that the apparatus used in the signal processing module 1000 may communicate with other devices. Illustratively, 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 or the like. The processor 1001 uses the communication interface 1003 to send and receive data, and is used to implement the methods in the above embodiments. Illustratively, the communication interface 1003 may be used to communicate signals.

In an example, the signal processing module 1000 is configured to implement the functions of the modules in the above method, and the signal processing module 1000 may be a network device or a device in a network device. The signal processing module 1000 includes at least one processor 1001 for implementing the functions of the modules in the above method. For example, the processor 1001 may be used to judge the performance of the first antenna and the second antenna, for details, please refer to the detailed description in the method, which will not be described here.

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

In some embodiments, the signal processing module 1000 may further include a communication interface 1003 for communicating with other devices through a transmission medium, so that the apparatus used in the signal processing module 1000 may communicate with other devices. Illustratively, 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 or the like. The processor 1001 uses the communication interface 1003 to send and receive data, and is used to implement the methods in the above embodiments. Exemplarily, the communication interface 1003 may send a sub-channel indication, a resource pool indication, and the like.

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, the memory 1002, the processor 1001, and the communication interface 1003 may be connected through a bus in FIG. 15, and the bus may be divided into an address bus, a data bus, a control bus, and the like.

In this embodiment 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, which can implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

In this 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 may also be a volatile memory (volatile memory), for example Random-access memory (RAM). Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.

The methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server or data center by wire (eg coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available media that can be accessed by a computer, or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video discs (DVD)), or semiconductor media (eg, SSDs), and the like.

FIG. 16 is a wireless communication apparatus provided by an embodiment of the present application. The wireless communication device may be a terminal or a base station in this embodiment of the present application. As shown in FIG. 16 , the wireless communication device includes a body 100, and is disposed in the body 100. The body 100 may include an application subsystem 104, a memory 103 (memory), a mass storage 105 (massive storage), a baseband subsystem 102, A radio frequency integrated circuit (RFIC) 101, a radio frequency front end (RFFE) device 106, and an antenna (ANT), these devices can be coupled through various interconnecting buses or other electrical connections.

In FIG. 16, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer >1. Tx represents the transmit path, Rx represents the receive path, and different numbers represent different paths. FBRx represents the feedback receiving path, PRx represents the primary receiving path, and DRx represents the diversity receiving path. HB means high frequency, LB means low frequency, both refer to the relative high and low frequency. BB stands for baseband. It should be understood that the labels and components in FIG. 16 are for illustrative purposes only, and only serve as a possible implementation manner, and the embodiments of the present application also include other implementation manners.

The radio frequency integrated circuit 101 can be further divided into a radio frequency receive path (RF receive path) and a radio frequency transmit path (RF transmit path). The RF receive channel can receive the RF signal through the antenna, process the RF signal (eg, amplify, filter and down-convert) to obtain a baseband signal, and transmit it to the baseband subsystem 102 . The RF transmit channel can receive the baseband signal from the baseband subsystem 102, perform RF processing (eg up-conversion, amplification and filtering) on the baseband signal to obtain the RF signal, and finally radiate the RF signal into space through the antenna. Specifically, the radio frequency subsystem may include an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer (mixer), a local oscillator (LOO) ), filters and other electronic devices, which can be integrated into one or more chips as required. Antennas can also sometimes be considered part of the RF subsystem.

The baseband subsystem 102 may extract useful information or data bits from the baseband signal, or convert the information or data bits into a baseband signal to be transmitted. These information or data bits may be data representing user data or control information such as voice, text, video, etc. For example, baseband subsystem 102 may implement signal processing operations such as modulation and demodulation, encoding and decoding. Different radio access technologies, such as 5G NR and 4G LTE, tend to have different baseband signal processing operations. Therefore, in order to support the convergence of multiple mobile communication modes, the baseband subsystem 102 may 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 referred to as a baseband integrated circuit (BBIC).

In addition, since the radio frequency signal is an analog signal, the signal processed by the baseband subsystem 102 is mainly a digital signal, and an analog-to-digital conversion device is also required in the wireless communication device. The analog-to-digital conversion device includes an analog-to-digital converter (ADC) that converts an analog signal to a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal to an analog signal. In this embodiment of the present application, the analog-to-digital conversion device may be disposed in the baseband subsystem 102 or in the radio frequency subsystem.

The application subsystem 104 can be used as the main control system or main computing system of the wireless communication device to run the main operating system and application programs, manage the hardware and software resources of the entire wireless communication device, and provide a user interface for users. 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 (eg, the baseband subsystem 102 ). The baseband subsystem 102 may also include one or more processing cores, as well as hardware accelerators (HACs), caches, and the like.

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

In this embodiment of the present application, the baseband subsystem 102 may be used as an independent chip, and the chip may be called a modem chip. The hardware components of the baseband subsystem 102 may be manufactured and sold in units of modem chips. Modem chips are also sometimes called baseband chips or baseband processors. In addition, the baseband subsystem 102 can also be further integrated in an SoC chip, and manufactured and sold in units of SoC chips. The software components of the baseband subsystem 102 can be built into the hardware components of the chip before the chip leaves the factory, or can be imported into the hardware components of the chip from other non-volatile memory 105 after the chip leaves the factory, or it can also be used online through the network. way to download and update these software components.

It should be understood that in the solution provided in this application, the wireless communication device may be a communication device, or may be a part of the device in the wireless communication device, such as a chip, a chip combination, or an integrated circuit 101 product such as a module including a chip. The wireless communication apparatus may be a computer device that supports wireless communication functions.

Specifically, the wireless communication device may be a terminal such as a smart terminal, or may be 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 . The baseband chip is also called a modem or a baseband processing chip. The radio frequency integrated circuit 101 is also called a transceiver chip, a radio frequency transceiver (transceiver) or a radio frequency processing chip. Therefore, the wireless communication device may be a single chip or a combination of multiple chips, such as a system-on-chip, a chip platform or a chip set.

A system-on-a-chip (SoC), also known as a system on a chip (SoC), or simply a SoC chip, can be understood as packaging multiple chips together to form a larger chip. For example, the baseband chip can be further packaged in the SoC chip. The chip platform or chip set can be understood as multiple chips that need to be used together. These multiple chips are often packaged independently, but the chips need to cooperate with each other when they work to complete the wireless communication function together. For example, the baseband chip (or the SoC chip integrating the baseband chip) and the radio frequency integrated circuit 101 are usually packaged independently, but need to be used together.

Regardless of whether the wireless communication device is a base station or a terminal, the above method can be used to perform handover, so as to improve the communication effect of the wireless communication device.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the protection scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (14)

1. A wireless communication device, comprising 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 through the switch; wherein, the first radio frequency channel is used to transmit a first signal, The second radio frequency channel 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 within the working frequency band of the service corresponding to the second communication card signal of;

   The signal processing module is configured to compare the strength of the first signal and the second signal, and 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 switch is controlled to switch the second antenna to be connected to the first radio frequency channel; Switch to connect with the second RF channel.
2. The wireless communication device according to claim 1, wherein the signal processing module is further configured to compare the intensities of the first signal and the second signal according to a set frequency, and compare the strengths of the first signal and the second signal according to the set frequency The performance of the first antenna and the second antenna.
3. The wireless communication device according to claim 1, wherein the signal processing module is configured to determine the first antenna and the second antenna according to the received signal strength of the first antenna and the second antenna performance.
4. The wireless communication device according to any one of claims 1 to 3, wherein the first antenna and the second antenna are selected partial antennas 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 priority in the wireless communication device.
6. The wireless communication device according to any one of claims 1 to 5, wherein 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 be connected to the first radio frequency channel, and the second antenna is connected to the first radio frequency channel. The antenna is switched into communication with the second radio frequency channel.
7. The wireless communication device according to claim 6, wherein the signal processing module further comprises a radio frequency transceiver chip; the radio frequency transceiver chip is respectively connected to the first radio frequency channel and the second radio frequency channel;

   The radio frequency transceiver chip is used to compare the strength of the first signal and the second signal, and compare the performance of the first antenna and the second antenna; if the strength of the first signal is higher, the If the performance of the first antenna is good, the switch is controlled to switch the second antenna to be connected to the first radio frequency channel; and to switch the first antenna to be connected to the second radio frequency channel.
8. The wireless communication device according to claim 7, wherein the radio frequency transceiver core is further configured to compare the priorities of the first signal and the second signal; if the priority of the first signal is higher , the performance of the first antenna is better, then control the switch to switch the first antenna to communicate with the first radio frequency channel, and switch the second antenna to communicate with the second radio frequency channel .
9. The wireless communication device according to claim 8, wherein the first radio frequency channel and the second radio frequency channel respectively comprise: a power amplifier connected to the radio frequency transceiver chip, and a power amplifier connected to the power amplifier. a filter, 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 is used for a first radio frequency channel and a second radio frequency channel; wherein the first signal is a first radio frequency channel and a second radio frequency channel. A signal in the working frequency band of the service corresponding to the communication card; the second signal is the signal in the working frequency band of the service corresponding to the second communication card; the first radio frequency channel is used to transmit the first signal, the second the radio frequency channel is used to transmit the second signal;

    The method includes 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 higher and the performance of the first antenna is better, the switch is controlled to switch the second antenna to be connected to the first radio frequency channel; Switch to connect with the second RF channel.
11. The antenna switching method according to claim 10, further comprising: comparing the intensities of the first signal and the second signal according to a set frequency, and comparing the first antenna according to the set frequency and the performance of the second antenna.
12. The antenna switching method according to claim 10 or 11, wherein 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 strength of the first antenna and the second antenna.
13. The antenna switching method according to any one of claims 10 to 12, wherein the method further comprises:

    comparing 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 be connected to the first radio frequency channel, and the second antenna is connected to the first radio frequency channel. The antenna is switched into communication with the second radio frequency channel.
14. The antenna switching method according to claim 13, wherein the first antenna and the second antenna are antennas with high priority in the wireless communication device.

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