CN115152090A

CN115152090A - Wireless communication device and antenna switching method thereof

Info

Publication number: CN115152090A
Application number: CN202180003826.1A
Authority: CN
Inventors: 夏正山
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2022-10-04
Also published as: WO2022160306A1

Abstract

The application provides a wireless communication device and an antenna switching method thereof, wherein the wireless communication device comprises a signal processing module, a switch, 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 correspondingly connected with the first radio frequency channel and the second radio frequency channel one by one through the selector switch; 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 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, controlling the selector switch to switch the second antenna to be connected with the first radio frequency channel; the first antenna is switched to connect with the second radio frequency channel. Therefore, different antennas are selected through the signal processing module to balance the signals of the services corresponding to the first communication card and the second communication card, and the communication effect of the first communication card and the second communication card is ensured.

Description

Wireless communication device and antenna switching method thereof

Technical Field

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

Background

With the improvement of communication protocols, terminal communication needs to support 2G, 3G, 4G, and 5G, and supported specifications are higher and higher, such as different specifications of 4G CA (Carrier Aggregation, LTE or NR combining multiple frequency bands into one large bandwidth transmission), 5G SA (standard, 5G NR independent networking), 5G NSA (Non-standard, 5G Non-independent networking, NR + LTE dual connection networking), and the like, the number of frequency bands of the additionally supported 3GPP protocol is increasing, and for more frequency bands supported by a flagship terminal, not only all domestic frequency bands need to be supported, but also roaming to a foreign frequency band needs to be supported, and accordingly, radio frequency front end hardware circuit resources of the terminal are also increasing.

In order to improve the transceiving performance of the terminal, each carrier uses a double-pole switch, a direct-through and cross configuration mode can be realized, and an antenna with the minimum relative loss is selected for TX transmission by detecting the quality comparison of RX on two receiving antennas, so that the transmitting performance of the antenna, such as EVM and VSWR, is relatively best, the efficiency is highest, and the power consumption during transmission is reduced.

But under multi-carrier communication, such as LTE or NR CA combinations: the HB + LB high-low frequency work combination, HB carrier wave uses a certain antenna switch x1, LB uses a certain antenna switch x2; for example, in the NSA operating mode, a Sub6G + Sub3G high-low frequency carrier operating combination exists, the Sub6G carrier uses a certain antenna switch y1, and the Sub3G uses a certain antenna switch y2; each carrier uses a different switch, and the TX of each carrier can select the best antenna.

The use of the dual-card terminal becomes the mainstream of the market, and the requirement specification trend of the main card and the auxiliary card is higher and higher, for example, the dual-4G and the dual-5G, while one card is in communication, the other card can be on the internet, and the like, so that the two cards have the use requirements on the hardware resources of the radio frequency RF front end of the terminal, and the use conflict of the hardware resources is larger correspondingly.

Disclosure of Invention

The application provides a wireless communication device and an antenna switching method thereof, which are used for improving the communication effect of the wireless communication device.

In a first aspect, a wireless communication device is provided, and is applied to a communication device, and the wireless communication device includes 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 correspondingly connected with the first radio frequency channel and the second radio frequency channel one by one through the selector switch; 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 first signal is a signal in a working frequency band of a service corresponding to the first communication card; the second signal is a signal in the working frequency band of the service corresponding to the second communication card; the signal processing module is used for comparing the strength 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 and the performance of the first antenna is better, controlling the change-over switch to change over the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel. In the technical scheme, the signal processing module is adopted to select different antennas to balance the signals of the services corresponding to the first communication card and the second communication card, so that the communication effect of the first communication card and the second communication card is ensured.

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

In a specific possible implementation, the signal processing module is configured 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. The performance of the antenna is determined based on the strength of the received signal of the antenna.

In a specific possible implementation, the first antenna and the second antenna are selected portions of an antenna of the wireless communication device. And selecting the antennas with better performance as the first antenna and the second antenna.

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

In a specific possible embodiment, the signal processing module is further configured to compare priorities of the first signal and the second signal; and if the priority of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel. And the communication effect of the main card is ensured.

In a specific possible implementation, the signal processing module further includes a radio frequency transceiver chip; the radio frequency transceiver chip is respectively connected with the first radio frequency channel and the second radio frequency channel; the radio frequency transceiving chip is used for comparing the strength 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 and the performance of the first antenna is better, controlling the change-over switch to change the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel.

In a specific possible embodiment, the radio frequency transceiver core is further configured to compare priorities of the first signal and the second signal; and if the priority of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel.

In a specific embodiment, the first rf channel and the second rf channel respectively include: the power amplifier is connected with the radio frequency transceiving chip, and the filter is connected with the power amplifier and is connected with the change-over switch.

In a second aspect, there is provided an antenna switching method for a wireless communication device, the wireless communication device comprising a first antenna and a second antenna, and for a first radio frequency channel and a second radio frequency channel; the first signal is a signal in a working frequency band of a service corresponding to the first communication card; the second signal is a signal in the working frequency band of the service corresponding to the second communication card; 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 method comprises the following steps:

comparing the performance of the first antenna to the performance of the second antenna;

comparing the intensity of the first and second signals;

if the strength of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to change the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel. In the technical scheme, the signal processing module is adopted to select different antennas to balance the signals of the services corresponding to the first communication card and the second communication card, so that the communication effect of the first communication card and the second communication card is ensured.

In a specific possible embodiment, the method further comprises: and comparing the strength of the first signal and the second signal according to a set frequency, and comparing the performance of the first antenna and the second antenna according to the set frequency.

In a specific embodiment, comparing the performance of the first antenna with the performance of the second antenna is:

and determining the performance of the first antenna and the second antenna according to the received signal strength of the first antenna and the second antenna.

In a specific possible embodiment, the method further comprises:

comparing the priorities of the first signal and the second signal;

and if the priority of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel.

In a specific possible 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, which includes a processor, and is configured to implement the method described in the second aspect. The signal processing module may also include a memory for storing instructions and data. The memory is coupled to the processor, and the processor, when executing the program instructions stored in the memory, may implement the method described in the second aspect above. The signal processing module may further include a communication interface for the apparatus to communicate with other devices, for example, a transceiver, a circuit, a bus, a module or other types of communication interfaces, and the other devices may be network devices or terminal devices.

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

a processor for invoking instructions stored in the memory to cause the apparatus to perform the second aspect of the embodiments of the present application and any one of the possible design methods of the second aspect.

In a fifth aspect, the present application further provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method of the second aspect and any one of the possible designs 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 further include a memory, and is used to implement the second aspect and any one of the possible design methods of the second aspect. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a seventh aspect, this application further provides a computer program product, which includes instructions that, when executed on a computer, cause the computer to perform any one of the possible design methods of the first aspect and the first aspect, or any one of the possible design methods of the second aspect and the second aspect.

Drawings

Fig. 1 is a schematic application scenario of a wireless communication device;

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

FIG. 3 is a diagram illustrating dual card communication of a wireless communication device according to the prior art;

fig. 4 is a block diagram of a wireless communication device according to an embodiment of the present disclosure;

fig. 5 is a block diagram of a wireless communication device in 2 × 2mimo according to an embodiment of the present disclosure;

fig. 6 is a block diagram of an 8 × 8mimo wireless communication device according to an embodiment of the present disclosure;

fig. 7a to 7d are reference diagrams illustrating states of a wireless communication device according to an embodiment of the present application when in use;

fig. 8 is a block diagram of an antenna selection according to an embodiment of the present disclosure;

fig. 9 is a flowchart of antenna selection provided in an embodiment of the present application;

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

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

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

fig. 13 is a schematic diagram of card 1 and card 2 in a voice service and standby state;

fig. 14 is a schematic diagram of card 1 and card 2 in a data traffic and tai chi state;

FIG. 15 is a block diagram of a signal processing module;

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

Detailed Description

For convenience of understanding, an application scenario of the wireless communication device provided in the embodiments of the present application is first described. The wireless communication device provided by the embodiment of the application is applied to wireless communication, such as the terminal and the base station shown in fig. 1, and the terminal and the base station can communicate with each other through an antenna. The wireless communication device provided by the embodiment of the application can be suitable for both terminals and base stations, and the terminals and the base stations are arranged by adopting the main set transmitting antenna and the main set receiving antenna in a split mode.

It should be understood that the wireless communication device may comply with the third generation partnership project (3 GPP) wireless communication standard, and may also comply with other wireless communication standards, such as the IEEE 802 series (e.g., 802.11, 802.15, or 802.20) wireless communication standards of the Institute of Electrical and Electronics Engineers (IEEE). Although only one base station and one terminal are shown in fig. 1, the wireless communication apparatus may include other numbers of terminals and base stations. The wireless communication device may also 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 Radio Access Technology (RAT) supported by the system and the radio resource configuration specified by the system, such as the basic configuration of the frequency band and carrier of the radio. These system-predefined configurations may be determined as part of the standard protocol of the wireless communication device or by the interaction between the terminal and the base station. The contents of the relevant standard protocols may be pre-stored in the memories of the terminal and the base station, or embodied as hardware circuits or software codes of the terminal and the base station.

The base stations are typically assigned to operators or infrastructure providers and are operated or maintained by these vendors. A base station may provide communication coverage for a particular geographic area through an integrated or external antenna. One or more terminals located within the communication coverage of the base station may each access the base station. A base station may also be referred to as a wireless Access Point (AP), or a Transmission Reception Point (TRP). Specifically, the base station may be a general Node B (gNB) in a 5G New Radio (NR) system, an evolved Node B (eNB) in a 4G Long Term Evolution (LTE) system, or the like.

The terminal is more closely related to the user, and is also called User Equipment (UE), or Subscriber Unit (SU), customer-premise equipment (CPE). A terminal tends to move with a user, sometimes referred to as a Mobile Station (MS), relative to a base station, which is typically located at a fixed location. In addition, some network devices, such as Relay Nodes (RNs), may also be considered as terminals due to their UE identities or due to their affiliations with users. Specifically, the terminal may be a mobile phone (mobile phone), a tablet computer (tablet computer), a laptop computer (laptop computer), a wearable device (such as a watch, a bracelet, a helmet and glasses), and other devices with wireless access capability, such as an automobile, a mobile wireless router, and various internet of things (IOT) devices, including various smart home devices (such as an electric meter and a household appliance) and smart city devices (such as a monitoring camera and a street lamp).

With the improvement of communication protocols, terminal communication needs to support 2G, 3G, 4G and 5G, supported specifications are higher and higher, such as 4G ca,5G sa and 5G NSA, the number of frequency bands of supported 3GPP protocols is increasing, the number of frequency bands supported by a flagship terminal is more, not only all frequency bands in the card are supported, but also roaming to foreign frequency bands is supported, and accordingly, hardware circuit resources of a radio frequency front end of a terminal are also increasing.

As shown in fig. 2, fig. 2 illustrates a structure of a radio frequency front end of a conventional terminal. The radio frequency transceiver comprises a radio frequency transceiver chip and a plurality of radio frequency circuits. In order to improve the transceiving performance, each radio frequency circuit is connected with two antennas by using a double-pole switch, and when the number of the radio frequency circuits is N, the number of the corresponding double-pole switches is N. Each double-pole switch can realize a direct connection or cross configuration mode between the radio frequency circuit and the antenna. When the antennas are allocated, the quality comparison of the RX on the two receiving antennas can be detected, and the antenna with the smallest relative loss is selected for TX transmission, so that the antenna has the best relative transmission performance, such as EVM (Error Vector Magnitude), VSWR (Voltage Standing Wave Ratio), the highest efficiency, and the power consumption during transmission is reduced.

Under multi-carrier communication, such as LTE (Long Term Evolution ) or NR CA combination: the HB + LB high-low frequency work combination, HB carrier wave uses the switch 1, LB uses the switch 2; for example, in an NSA (Non-standard one,5G Non-independent networking, NR + LTE dual connectivity internet) operating mode, there is a Sub6G + Sub3G high and low frequency carrier operating combination, the Sub6G carrier uses a switch 3, and the Sub3G uses a switch 4; different switches are used for each carrier, and the TX of each carrier can select the best antenna.

The radio frequency front end device resources are as follows: an antenna, a switch, a duplexer, a receiving filter, a power amplifier PA, a radio frequency Transceiver (Transceiver), etc. The integrated device includes FEM (Front-end Modules), FEMid (Front-end Modules with integrated duplexers), MMMB PA (Multi-Mode Multi-Frequency Power Amplifier Module), and the like. For each carrier, when the carrier operates in different modes such as 2 × 2mimo (Multi Input Multi Output), 4 × 4mimo,8 × 8mimo, and the like, the carrier occupies 2, 4, and 8 receiving channels, respectively.

With the use of the dual-card terminal becoming the mainstream of the market, the requirement specification trend of the main card and the auxiliary card is higher and higher, for example, in the case that the main card and the auxiliary card are both 4G or both 5G, one card can be used for calling while the other card can be used for surfing the internet, and the like, so that the two cards have the use requirement on the radio frequency RF front-end hardware resources of the terminal, and the use conflict of the hardware resources is larger correspondingly.

The radio frequency front end frequency band is generally divided into three frequency intervals according to the frequency dimension: LB (700 MHz-900 MHz), MHB (1400 MHz-2700 MHz), UHB (3000 MHz-5900 MHz), the three sections include the following common frequency ranges:

table 1: universal frequency range table for frequency range interval

If the working channels of the two cards are in the same frequency band interval, because the radio frequency front end resources are the same devices, for example, the main card works in LTE B1, the sub-card works in n3 frequency band, and the two cards work with the same antenna, the antenna switches, PAs, and front end RF resource usage corresponding to the two cards will conflict, and at this time, a Time Division (TDM) mode and a dual serial digital interface (DSDA) mode may be used on a system of the user terminal to activate and allocate channels for carriers of the two cards.

Referring to fig. 3, fig. 3 illustrates a specific operating state. When a single sim1 works, if the sim1 works in a CA scenario, the corresponding carrier aggregation is as follows: bandA1, bandA2, bandA3, and bandA5, and there are independent double-pole double-throw switches (including switch 1, switch 2, switch 3, and switch 5) for these four frequency bands, and each carrier may use a different antenna through switch 1, switch 2, switch 3, and switch 5. When the state of each antenna changes (such as being contacted by a human body, held by a hand and the like), signals change, each carrier wave can independently perform independent antenna switching selection according to respective energy detection, so that a good communication effect is ensured.

When the two cards are both in working states, sim1 works in a CA scene, and carrier aggregation is as follows: bandA1, bandA2, bandA3, bandA5; sim2 works in a CA scenario, and carrier aggregation is: bandB1, bandB3 and bandB5. Referring to fig. 3, only the resources corresponding to BandA2 (two antennas corresponding to switch 2) are used by sim1 only. When other carriers work, the corresponding switches (switch 1, switch 3 and switch 5) conflict when sim1 and sim2 work simultaneously. Therefore, the embodiment of the application provides a wireless communication device, which is used for configuring radio frequency front-end resources and improving the situation that the sim1 and the sim2 conflict during operation. The following detailed description is made with reference to the accompanying drawings.

Referring to fig. 4, fig. 4 shows a wireless communication device provided in an embodiment of the present application, which includes a signal processing module, a switch 40, and a first antenna 50 and a second antenna 60.

The signal processing module comprises a first radio frequency channel 20 and a second radio frequency channel 30. Wherein, the first radio frequency channel 20 is used for transmitting a first signal, and the second radio frequency channel 30 is used for transmitting a second signal; the first signal is a signal in a working frequency band of a service corresponding to the first communication card; the second signal is a signal in the working frequency band of the service corresponding to the second communication card. The first communication card and the second communication card may correspond to sim1 and sim2 in fig. 3. In addition, the signal processing module further comprises a radio frequency transceiver chip 10; the radio frequency transceiver chip 10 is connected to a first radio frequency channel 20 and a second radio frequency channel 30 respectively. And the radio frequency transceiver chip 10 is also used for connecting with a first communication card and a second communication card.

The first antenna 50 and the second antenna 60 are correspondingly connected with the first radio frequency channel 20 and the second radio frequency channel 30 one by one through the selector switch 40, the selector switch 40 is a two-pole switch, so that one of the first radio frequency channel 20 can be connected with the first antenna 50 and the second antenna 60, and one of the second radio frequency channel 30 can be connected with the first antenna 50 and the second antenna 60.

The first rf path 20 and the second rf path 30 may include devices related to a transmitting circuit and a receiving circuit, such as a power amplifier, a filter, or a low noise amplifier, and the above specific devices may be disposed in a conventional manner, and are not limited in this respect. Illustratively, the first rf channel 20 and the second rf channel 30 each include: a power amplifier connected with the radio frequency transceiver chip 10, a filter connected with the power amplifier, and the filter connected with the switch 40.

It should be understood that fig. 4 illustrates only one basic structure of the rf front end, and the current rf front end has complex circuitry and diverse service operation scenarios, such as 2 × 2mimo,4 × 4mimo,8 × 8mimo, and it is possible that a certain time period in which the terminal operates is scheduled by the base station, but the UE hardware needs to support the maximum specification of 8 × 8mimo. However, the present application is not limited to the specific embodiments, and the following description will explain a structure of a line of a radio frequency front end in different scenarios with reference to specific drawings.

Referring to fig. 5, fig. 5 shows a schematic structural diagram of an rf front-end circuit of a2 × 2mimo scenario. The radio frequency front-end circuit comprises a power amplifier PA and a Low Noise Amplifier (LNA) which are contained in a first radio frequency channel corresponding to sim1, and the power amplifier and the LNA are connected with a front-end module FEM through a selection switch. And the second radio frequency channel corresponding to sim2 comprises a low noise amplifier LNA, and the low noise amplifier is connected with the front end module FEM. The two front-end modules FEM are connected to the first antenna ANT0 and the second antenna ANT1 via a double-pole double-throw switch DPDT1 (change-over 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 connected with the front-end module FEM respectively through direct connection or cross connection.

When only sim1 works, the radio frequency transceiving chip compares the performances of the first antenna ANT0 and the second antenna ANT1 to judge the antenna with better performance. And the best performing antenna is connected to the first radio frequency channel. Illustratively, if the first antenna ANT0 has better performance, the first antenna ANT0 is controlled to be connected with the first radio frequency channel, and if the second antenna ANT1 has better performance, the second antenna ANT1 is controlled to be connected with the first radio frequency channel.

When the rf transceiver chip determines the performance of the first antenna ANT0 and the second antenna ANT1, and the first antenna ANT0 and the second antenna ANT1 are used as receiving antennas, the best antenna may be determined according to the received signal strength of the first antenna ANT0 and the second antenna ANT1. 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 judges the antenna with the best performance by judging the received signal strength of the first antenna ANT0 and the second antenna ANT1. For example, when the second antenna ANT1 is held and the first antenna ANT0 is not held during terminal use, the performance of the first antenna ANT0 is better and the performance of the second antenna ANT1 is worse. The signal strength received by the first antenna ANT0 and the second antenna ANT1 can be judged, for example, when it is detected that the signal received by the first antenna ANT0 is-80 dBm and the signal received by the second antenna ANT1 is-90 dBm, it is judged that the performance of the first antenna ANT0 is better and the performance of the second antenna ANT1 is poorer, and when only sim1 works, the first antenna ANT0 can be switched to be connected with the first radio frequency channel.

When sim1 and sim2 are simultaneously operated, since there is only the first antenna ANT0 and the second antenna ANT1, a collision occurs between sim1 and sim2. In order to ensure that services corresponding to sim1 and sim2 can operate normally, the performance of the two antennas needs to be compared, and the first antenna ANT0 and the second antenna ANT1 are selected to be matched with the first radio frequency channel and the second radio frequency channel respectively through the double-pole double-throw switch DPDT 1. The double-pole double-throw switch DPDT1 is a selection switch. In making the match, the signal processing module first compares the strength of the first signal and the second signal. Specifically, the strength of a first signal and a second signal may be determined by the radio frequency transceiver chip, where the first signal is a stronger signal received by the first antenna ANT0 and the second antenna ANT1, and the second signal is a stronger signal received by the first antenna ANT0 and the second antenna ANT1. Exemplarily, in a service corresponding to sim1, the signal strength received by the first antenna ANT0 is-70 dBm, and the signal strength received by the second antenna ANT1 is-80 dBm, so that the first signal is-70 dBm; in the service corresponding to sim2, the signal strength received by the first antenna ANT0 is-90 dBm, the signal strength received by the second antenna ANT1 is-100 dBm, and the second signal is-90 dBm.

When comparing the strength of the first signal and the second signal, a threshold value can be set, when the strength of the signal is greater than the threshold value, the signal is judged to be a signal with higher strength, otherwise, the signal is judged to be a signal with weaker strength. When the strength of the first signal and the strength of the second signal are determined, the first signal and the second signal may be compared with a threshold respectively, and when the strength of the first signal is greater than the threshold and the strength of the second signal is lower than the threshold, the first signal is considered to be a signal with higher strength and the second signal is considered to be a signal with weaker strength. Or comparing the intensity of the first signal and the second signal.

When comparing the performance of the first antenna ANT0 and the second antenna ANT1, the determination may be made by using the received signal strength of the first antenna ANT0 and the second antenna ANT1. 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 radio frequency channel and the second antenna ANT1 is switched to the second radio frequency channel, the normal communication of the sim2 service cannot be guaranteed because the strength of the second signal corresponding to the sim2 is weak and the second signal is received through the antenna with poor performance. Therefore, in the embodiment of the present application, the switch is controlled to switch the second antenna ANT1 to be connected to the first rf channel, and to switch the first antenna ANT0 to be connected 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-90 dBm. The signal intensity of the service corresponding to Sim1 and the signal intensity of the service corresponding to Sim2 are both within a certain signal-to-noise ratio range, so that the services corresponding to Sim1 and Sim2 can be normally communicated.

When the signal processing module performs the above operation, 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. So as to ensure that the corresponding switching can be carried out according to the real-time antenna performance and the signal strength.

In addition, when both the first signal and the second signal are weak or both strong, the first antenna ANT0 and the second antenna ANT1 may be selected by priorities of the first signal and the second signal. Illustratively, the signal processing module is further configured to compare priorities of the first signal and the second signal, and specifically, may determine priorities of sim1 and sim2, where if the priority of sim1 is higher, the priority of the corresponding first signal is higher, and if the priority of sim2 is higher, the priority of the corresponding second signal is higher. Illustratively, 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 communicated with the first radio frequency channel and the second antenna ANT1 to be communicated with the second radio frequency channel. If the priority of the first signal is higher and the performance of the second antenna ANT1 is better, the first antenna ANT0 is switched to be communicated with the second radio frequency channel by controlling the change-over switch, and the second antenna ANT1 is switched to be communicated with the first radio frequency channel.

When the signal processing module compares the strength of the first signal and the strength of the second signal, the comparison is realized through a radio frequency transceiver chip, and specifically, the radio frequency transceiver chip is used for comparing the priority of the first signal and the priority of the second signal; if the priority of the first signal is higher and the performance of the first antenna ANT0 is better, the changeover switch is controlled to switch the first antenna ANT0 to be communicated with the first radio frequency channel and switch the second antenna ANT1 to be communicated 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 × 8mimo. The following circuit exemplifies that the highest specification of a certain frequency band supports 8 × 8MIMO, and the switch configuration set modes respectively working in different scenarios of 2 × 2 MIMO/4 × 4 MIMO/8 × 8MIMO can refer to table 2.

TABLE 2

Selection antenna	Configuration collection
ANT0	DPDT1 pass-through
ANT1	DTDT1 Cross, SP4T (port 1)
ANT2	DTDT1 Cross, SP4T (port 2), SPDT1, DPDT2 straight-through
ANT3	DTDT1 crossover, SP4T (port 2), SPDT1, DPDT2 crossover
ANT4	DTDT1 Cross, SP4T (port 3), SPDT2, DPDT3 straight-through
ANT5	DTDT1 crossover, SP4T (port 3), SPDT2, DPDT3 crossover
ANT6	DTDT1 crossover, SP4T (port 4), SPDT3, DPDT4 cut-through
ANT7	DTDT1 crossover, SP4T (port 4), SPDT3, DPDT4 crossover

Referring to table 1, when sim1 employs 8 × 8mimo, 8 different antennas such as ANT0 to ANT7 may be selected in the manner described above, that is, the power amplifier PA of the first radio frequency channel may select any one of ANT0 to ANT7 in the switch arrangement manner in table 1. Here, ANT0 and ANT1, ANT2 and ANT3, ANT4 and ANT5, ANT6 and ANT7 appearing in pairs may be equivalent to a first antenna and a second antenna, and dtdtdtdtdts 1 to dtdtdtdt 4 may be equivalent to a change-over switch. SPDT 1-SPDT 3 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 port 1-port 4. The power amplifier PA can select different antennas by matching SP4T with SPDT1 to SPDT 3.

Illustratively, when the service corresponding to sim1 and the service corresponding to sim2 are in different frequency bands, sim1 and sim2 do not conflict with each other, and the switch can be selected at will. For example, the service corresponding to sim1 may use antennas ANT0, ANT1, ANT2, ANT3, and the service corresponding to sim2 may use antennas ANT4, ANT5; sim1 can select the antenna with better selectivity between ANT0 and ANT1 and between ANT2 and ANT3 through DPDT1 and DPDT2, and sim2 can select the antenna with better performance of ANT4 and ANT5 through DPDT 3. 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 may use antennas ANT0, ANT1, ANT2, and ANT3, and the service corresponding to sim2 may use antennas ANT2 and ANT3; according to the manner shown in fig. 5, according to the strength of the first signal and the second signal and the comparison result of the performances of the antennas ANT2 and ANT3, ANT2 and ANT3 need to be selected by DPDT2 to be configured to sim1 and sim2, and the specific configuration rule may refer to the relevant description in fig. 5, which is not described herein again.

The first antenna and the second antenna are selected partial antennas in the antenna of the wireless communication device. For example, the radio frequency transceiver chip may select an alternate antenna set from the antennas in the wireless communication device, and the selection may be performed according to different rules. For example, the antennas may be selected randomly or alternately in a certain order, or the antenna with the highest received signal strength may be selected as the spare antenna by first using the received signal strength recorded by each antenna when receiving signals. And screening a part of antennas as a spare antenna set according to the setting conditions, wherein the setting conditions can adopt different settings, for example, the setting conditions can select the spare antenna set according to the priority set in the wireless communication device, and in this case, the first antenna and the second antenna are antennas with high priority in the wireless communication device.

As an example, referring to fig. 7a to 7d, the terminal detects that the current terminal is in a certain form through each detection means, and each form has a preset different switching antenna set, where the terminal form includes: the mobile terminal comprises a telephone mode, a lower hand-held mode, a game playing double-hand-held horizontal screen mode, a flip screen mode, a folding screen mode and the like, wherein various modes are identified by a sensor arranged in the terminal, and the modes are predefined and the antenna sets are preferably selected.

And in the form change, the terminal selects the best antenna combination, and in the subsequent service working process, the antenna dynamic selection is realized in the latest antenna set according to an antenna optimization selection strategy.

Referring to fig. 8, the configuration of the 2 × 2mimo receiving circuit is exemplified, and the configuration is changed into a standard dual-antenna optimization selection configuration in each configuration. The corresponding antennas comprise ANT 0-ANT 3, two antennas ANT A and ANTB are selected as a first antenna and a second antenna through the terminal, and antenna optimization selection operation is carried out on the two antennas in subsequent services.

Referring to fig. 9, an embodiment of the present application provides a schematic flow chart of an antenna during screening. In the working process of product service, registering is carried out according to the antenna switch used in actual service work, each switching strategy is periodically examined by definition, and whether the antenna switch is optimized and selected is executed according to an evaluation result.

Firstly, after each sim card starts service, extracting the antenna channel of each current carrier of the sim card, further extracting the antenna channel of each current carrier, and extracting the antenna switch use mark of each carrier for work. For example, referring to the structural block diagram shown in fig. 3, sim1 works in a CA scenario, and carrier aggregation is as follows: band A1, band A2, band A3 and band A5; sim2 works in a CA scenario, and carrier aggregation is: bandB1, bandB3 and bandB5. Four switches such as a switch 1, a switch 2, a switch 3, and a switch 5 are extracted according to the antenna path of each carrier, and the four switches are used as antenna priority switches. And registering the four switches, and taking the four switches as a switch set, and when an antenna is selected, performing switching evaluation on each switch according to a switching strategy or on the registered switches. And judging the switching states in the switch set one by one, and evaluating whether the switch needs to be switched under the scene of a single card or double cards. And if the antenna switching condition is met, executing a switch switching action to realize the antenna optimization.

If the service changes, the working frequency band combination changes, and the like, extraction is carried out again. Illustratively, if sim1 switches a new service, the switch corresponding to sim 1's new service is relabeled. And interrupting each sim card in real time, updating the switch mark in real time, and registering the switch mark in a switch state set maintained by the system. The radio frequency transceiver chip generates the interrupt at the timing which is customized by the system, and the purpose of each interrupt is to evaluate the switching of each switch or the switches which are registered. And the 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. And updating and selecting different switch sets according to the services of sim1 and sim2, or controlling the switches to switch according to the performance of the antenna.

The following describes in detail the strategy adopted by the two switches in switching. The strategy comprises the following steps:

step 001: 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. Reference may be made in particular to the description relating to fig. 5.

Step 002: comparing the intensity 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 strength of the first signal and the second signal, and the specific comparison manner can refer to the related description in fig. 5.

Step 003: if the strength of the first signal is higher and the performance of the first antenna is better, controlling the selector switch to switch the second antenna to be connected with the first radio frequency channel; the first antenna is switched to connect with the second radio frequency channel.

Specifically, reference may be made to the related description in fig. 5, and details are not repeated here.

Step 004: the strength of the first signal and the second signal is compared according to a set frequency, and the performance of the first antenna and the second antenna is compared according to the set frequency.

Specifically, reference may be made to the related descriptions in fig. 5 and fig. 9, which are not repeated herein.

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

in particular, reference may be made to the description relating to fig. 5.

Step 006: if the priority of the first signal is higher and the performance of the first antenna is better, the selector switch is controlled to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel.

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

All object switches realize a uniform switching strategy, and the switching target is maximization, so that each card can actively switch the switch required by the card.

For any switch, two working states exist in the working process, only one card uses the switch, or two cards commonly use the switch. For example, when a card is used, the switch may be used in sim1 or sim2. When the dual card is used, sim1 and sim2 use the switch simultaneously.

The strategy when only one card is used is to count the energy of each receiving antenna over a period of time in a time window. And interrupting at regular time, evaluating whether the TX antenna is the antenna with better performance in the two receiving antennas after interruption, and starting the antenna switching action if the TX antenna is not the antenna with better performance in the two receiving antennas. Taking the scenario shown in fig. 3 as an example, if only sim1 is used for switch 2, the performance of two switches corresponding to switch 2 is determined, and the antenna with better performance is used for sim 1.

When the dual cards work together, two different situations are divided, the dual cards are combined in high and low frequency bands, and the dual cards work in the same frequency band interval. When the dual cards are combined in high and low frequency bands, the combined working band of the dual cards is combined in high and low frequency bands by identifying the scene, namely, each card has a complete RX receiving circuit and multiplexes an antenna path through a frequency divider. For the receive antenna, no selection is required. The cards with traffic for TX are served mainly, and the best antenna is selected for TX. The scenario strategy is the same as the strategy described above for a single card using a switch. And the state that the dual card works in the same frequency band interval, it is direct conflict to the dual card, on the RX channel of the hardware, to the dual antenna circuit, take an RX route separately, choose the best aerial to the card with high priority.

Referring to fig. 10, when a single card or a dual card uses an object switch without conflict, that is, when the object switch is used by only one card, in this scenario, a user has complete RX radio frequency channel resources, an antenna with the minimum loss is selected for TX, thereby improving transmission efficiency and performance, and reducing power consumption of UE.

Referring to fig. 11a and 11b, when the dual cards use a certain object switch to collide, in this scenario, a receiving channel is allocated to each of the dual cards, and the best antenna is selected for the card with the highest service score (the card with the highest priority), as shown in fig. 11a, at a certain time, the card 1 (the master card) has the highest evaluation, and the antenna 1 has the best performance, then the antenna 1 is selected for the master card; as shown in fig. 11b, at a certain time the card 1 evaluates the highest and the antenna 2 performs the best, then antenna 2 is selected for the master card. I.e. always select the best antenna for the TX of the master card evaluating the highest.

The dual-card working scene combination mainly comprises four scenes: standby + standby, voice service + standby, data service + standby, voice service + data.

As shown in fig. 12 and 13, the horizontal axis in fig. 12 and 13 is time, and in actual operation, the terminal is in the standby + standby state for most of the operation time, and the terminal is in the traffic + standby state for a few operation time scenarios.

As shown in fig. 12, the card 1 and the card 2 are in the standby state for most of the time; as shown in fig. 13, in a very short time, one of the

cards

1 and 2 is in a traffic state, and the other of the

cards

1 or 2 is in a standby state. The service type combination is divided into three scene judgments: standby + standby, voice service + standby, data service + standby, voice service + data.

When sim1 and sim2 are in standby state, in this scenario, most of the standby time of the dual cards is TDM (time division mode), and the probability of the dual cards operating simultaneously is relatively low, in this scenario, that is, most of the standby time of the dual cards is dual-receiving, and there is no need to switch antennas. Therefore, when the high-priority card and the low-priority card work and collide simultaneously, the high-priority card is preferentially used for selecting the antenna with higher performance. The handover policy may refer to table 3.

TABLE 3

Card 1 signal	Card	2 signal	Priority determination	Antenna selection weights
Weak (weak)	Weak (weak)	Equal priority	Uncut antenna
Strong strength (S)	High strength	Equal priority	Uncut antenna
Weak (weak)	High strength	Card	1	Card 1-cut antenna
High strength	Weak (weak)	Card 2	Card 2-cut antenna

As can be seen from table 2, when both cards are in the standby state, the priority determined by the weaker signal is higher, and when the antennas are switched, the weaker signal is preferentially taken care of, so that the antenna with stronger performance is matched to the weaker signal. Before switching, the strength of the signal (first signal) of the card 1 and the strength of the signal (second signal) of the card 2 are compared, and 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 with the first radio frequency channel, so that the weaker signal can be distributed to the antenna with higher performance. Similarly, if the second signal is higher and the first antenna has better performance, the switch is controlled to switch the first antenna to the first rf channel, so that the weaker signal can be distributed to the antenna with higher performance.

When sim1 is in a speech state and sim2 is in a standby state, in this scenario, speech has relatively high priority, and the experience of speech is most direct and sensitive to the user: on one hand, if the voice card has no capability of switching antennas, the uplink antenna is lost, such as a hand-held scene and an uplink power limited scene, although the maximum power is transmitted, the requirement of a base station receiving threshold is not met, and the voice of the other party cannot be heard as a direct result; on the other hand, the received signal is also weak, and the quality of the sound heard by the end user is also poor. Therefore, the cards in voice traffic have a higher priority. The strategy for antenna switching in the above scenario can be referred to table 4.

TABLE 4

Card 1 signal	Card	2 signal	Priority determination	Antenna selection weights
Speech sound	Standby	Card	1	Card 1
Standby	Speech sound	Card	2	Card 2

When sim1 is a data service and sim2 is a standby state, in this scenario, since the card in the standby state may have incoming calls at any time, the missed call is a relatively direct user experience for the user. The cards in standby state have 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, the antenna switching to the data card is also supported.

When switching, the standby card has the highest priority because the standby is low in working time ratio relative to data service, and switches the switch preferentially when working; after the work is finished, the switch switching right is transferred to the service card, and the service card prefers an antenna when the service card is TX. When the service card prefers the time window of the antenna, the standby card is not in operation. As shown in fig. 14, each time the standby card starts operating, the antenna switch is switched to its optimal antenna path in advance as indicated by the arrow. During the non-working period, such as t1, t2 and t3, and during the non-working period of the standby card, the data service card has the switching right to realize the automatic switching of the TX switch, and the switching strategies are the same when the same card is used, so that the antenna optimization strategy is simultaneously carried out by the double cards.

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

In an example, as shown in fig. 15, the signal processing module 1000 is configured to implement the function of the terminal device in the above method, and the signal processing module 1000 may be the terminal device, or may be an apparatus in the terminal device. The signal processing module 1000 comprises 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 build a three-dimensional model according to the acquired basic information of the city lifeline buried in the city, which is described in detail in the method and will not be described here.

In some embodiments, the signal processing module 1000 may also 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 embodiments of the present application is a spaced coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form, 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. 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.

In some embodiments, the signal processing module 1000 may also include a communication interface 1003 for communicating with other devices over a transmission medium, such 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, which may be a network device or other terminal device, etc. The processor 1001 transmits and receives data using the communication interface 1003, and is used to implement the method in the above-described embodiment. Illustratively, communication interface 1003 may be used for communicating signals.

In an example, the signal processing module 1000 is used to implement the functions of the modules in the method, and the signal processing module 1000 may be a network device or an apparatus in a network device. The signal processing module 1000 comprises at least one processor 1001 for implementing the functions of the modules in the above method. For example, the processor 1001 may be configured to determine performance of the first antenna and the second antenna, which will not be described herein with reference to the detailed description of the method.

In some embodiments, the signal processing module 1000 may also 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 embodiments of the present application is a spaced coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form, which is used for information interaction between the devices, units or modules. As another implementation, the memory 1002 may also be located outside of the signal processing module 1000. The processor 1001 may cooperate 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.

In some embodiments, the signal processing module 1000 may also include a communication interface 1003 for communicating with other devices over 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, which may be a network device or other terminal device, etc. The processor 1001 transmits and receives data using the communication interface 1003 and is configured to implement the methods in the above embodiments. Illustratively, communication interface 1003 may transmit a subchannel indication, a resource pool indication, or the like.

The embodiment of the present application does not limit the connection medium among the communication interface 1003, the processor 1001, and the memory 1002. For example, in fig. 15, the memory 1002, the processor 1001, and the communication interface 1003 may be connected by a bus, and the bus may be divided into an address bus, a data bus, a control bus, and the like.

In the embodiments of the present application, the processor may be a general 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 blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory, for example, 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 that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, special purpose computer, computer network, network appliance, user equipment, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). 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, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., an SSD), among others.

Fig. 16 is a wireless communication device according to an embodiment of the present application. The wireless communication apparatus may be a terminal or a base station in the embodiments of the present application. As shown in fig. 16, the wireless communication device includes a body 100, and is disposed in the body 100, and the body 100 may include an application subsystem 104, a memory 103 (memory), a mass storage 105 (mass storage), a baseband subsystem 102, a radio frequency integrated circuit 101 (RFIC), a Radio Frequency Front End (RFFE) device 106, and an Antenna (ANT), which may be coupled through various interconnection buses or other electrical connections.

In fig. 16, ANT _1 denotes a first antenna, ANT _ N denotes an nth antenna, and N is a positive integer > 1. Tx denotes a transmit path, rx denotes a receive path, and different numbers denote different paths. FBRx denotes a feedback reception path, PRx denotes a main reception path, and DRx denotes a diversity reception path. HB denotes high frequency, LB denotes low frequency, and both denote relative high and low frequencies. BB denotes a baseband. It should be understood that the labels and components in fig. 16 are for illustrative purposes only, as only one possible implementation, and that other implementations are also encompassed by the present embodiments.

The RF integrated circuit 101 may be further divided into an RF receive path (RF receive path) and an RF transmit path (RF transmit path). The rf receive channel may receive an rf signal via an antenna, process (e.g., amplify, filter, and downconvert) the rf signal to obtain a baseband signal, and pass the baseband signal to the baseband subsystem 102. The rf transmit channel may receive the baseband signal from the baseband subsystem 102, perform rf processing (e.g., 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. In particular, the rf subsystem may include an antenna switch, an antenna tuner, a Low Noise Amplifier (LNA), a Power Amplifier (PA), a mixer (mixer), a Local Oscillator (LO), a filter (filter), and other electronic devices, which may be integrated into one or more chips as desired. Antennas may sometimes also 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 to 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, the baseband subsystem 102 may perform signal processing operations such as modulation and demodulation, encoding and decoding. There is often not exactly the same baseband signal processing operation for different radio access technologies, such as 5G NR and 4G LTE. Therefore, to support convergence of multiple mobile communication modes, the baseband subsystem 102 may include multiple processing cores, or multiple HACs, simultaneously. The baseband subsystem 102 is typically integrated into one or more chips, and the chip integrating the baseband subsystem 102 is typically referred to as a baseband integrated circuit (BBIC).

In addition, since the rf signal is an analog signal, the signal processed by the bb 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 into a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal into an analog signal. In the embodiment of the present application, the analog-to-digital conversion device may be disposed in the baseband subsystem 102, or may be disposed in the radio frequency subsystem.

The application subsystem 104 may be used as a main control system or a main computing system of the wireless communication device, and is used to run a main operating system and application programs, manage software and hardware resources of the whole wireless communication device, and provide a user operation interface for a user. The application subsystem 104 may include one or more processing cores. In addition, driver software associated with other subsystems (e.g., baseband subsystem 102) may also be included in application subsystem 104. The baseband subsystem 102 may also include one or more processing cores, as well as Hardware Accelerators (HACs) and buffers, among others.

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

In the embodiment of the present application, the baseband subsystem 102 may be implemented as a stand-alone chip, which may be referred to as a modem (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 referred to as baseband chips or baseband processors. In addition, the baseband subsystem 102 may be further integrated into an SoC chip, and manufactured and sold in units of SoC chips. The software components of the baseband subsystem 102 may be built in the hardware components of the chip before the chip is shipped, or may be imported into the hardware components of the chip from the other nonvolatile memory 105 after the chip is shipped, or may be downloaded and updated online through a network.

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

Specifically, the wireless communication apparatus may be a terminal such as an intelligent terminal, or may be a radio access network device such as a base station. Functionally, chips for wireless communication may be divided into baseband chips and radio frequency integrated circuits 101. The baseband chip is also referred to as a modem (modem) or baseband processing chip. The rf integrated circuit 101 is also called a transceiver chip, a radio frequency transceiver (transceiver) or an rf processing chip. Thus, the wireless communication device may be a single chip or a combination of multiple chips, such as a system chip, a chip platform, or a chip set.

A system-on-chip, also called a system-on-a-chip (SoC), or simply SoC chip, is understood to be a chip that is packaged together into a larger chip. For example, the baseband chip may be further packaged in an SoC chip. The chip platform or the chip set can be understood as a plurality of chips which need to be used in a matched mode, the plurality of chips are often packaged independently, but the chips need to be matched with each other during working, and the wireless communication function is achieved together. For example, the baseband chip (or SoC chip integrated with the baseband chip) and the rf integrated circuit 101 are usually packaged separately, but need to be used together.

The switching can be carried out by the method regardless of whether the wireless communication device is a base station or a terminal, so that the communication effect of the wireless communication device is improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such 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 intended to include such modifications and variations as well.

Claims

A wireless communication device is characterized by comprising a signal processing module, a selector switch, 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 correspondingly connected with the first radio frequency channel and the second radio frequency channel one by one through the selector switch; 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 first signal is a signal in a working frequency band of a service corresponding to the first communication card; the second signal is a signal in the working frequency band of the service corresponding to the second communication card;

the signal processing module is used for comparing the strength 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 and the performance of the first antenna is better, controlling the change-over switch to change over the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel.
The wireless communication device of claim 1, wherein the signal processing module is further configured to compare strengths of the first signal and the second signal according to a set frequency, and compare performances of the first antenna and the second antenna according to the set frequency.
The wireless communication apparatus of claim 1, wherein the signal processing module is configured 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.
The wireless communication device according to any of claims 1 to 3, wherein the first antenna and the second antenna are selected partial antennas of the wireless communication device.
The wireless communication apparatus of claim 4, wherein the first antenna and the second antenna are antennas with a higher priority in the wireless communication apparatus.
The wireless communication device according to any of claims 1 to 5, 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 change-over switch is controlled to switch the first antenna to be communicated with the first radio frequency channel and switch the second antenna to be communicated with the second radio frequency channel.
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 with the first radio frequency channel and the second radio frequency channel;

the radio frequency transceiving chip is used for comparing the strength 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 and the performance of the first antenna is better, controlling the change-over switch to change the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel.
The wireless communication device of claim 7, wherein the radio frequency transceiver core is further configured to compare priorities of the first signal and the second signal; and if the priority of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel.
The wireless communication apparatus of claim 8, wherein the first RF channel and the second RF channel respectively comprise: the power amplifier is connected with the radio frequency transceiving chip, and the filter is connected with the power amplifier and is connected with the change-over switch.
An antenna switching method of a wireless communication device, wherein the wireless communication device comprises a first antenna and a second antenna, and is used for a first radio frequency channel and a second radio frequency channel; the first signal is a signal in a working frequency band of a service corresponding to the first communication card; the second signal is a signal in the working frequency band of the service corresponding to the second communication card; 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 method comprises the following steps:

comparing the performance of the first antenna to the performance of the second antenna;

comparing the intensity of the first and second signals;

if the strength of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to change the second antenna to be connected with the first radio frequency channel; switching the first antenna to connect with the second radio frequency channel.
The antenna switching method according to claim 10, further comprising: and comparing the strength of the first signal and the second signal according to a set frequency, and comparing the performance of the first antenna and the second antenna according to the set frequency.
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 specifically comprises:

and determining the performance of the first antenna and the second antenna according to the received signal strength of the first antenna and the second antenna.
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;

and if the priority of the first signal is higher and the performance of the first antenna is better, controlling the change-over switch to switch the first antenna to be communicated with the first radio frequency channel and the second antenna to be communicated with the second radio frequency channel.
The antenna switching method according to claim 13, wherein the first antenna and the second antenna are antennas with higher priority in the wireless communication device.