WO2021189388A1

WO2021189388A1 - Wireless communication device and antenna switching method therefor

Info

Publication number: WO2021189388A1
Application number: PCT/CN2020/081516
Authority: WO
Inventors: 徐求良; 刘道明; 王辉; 荆伟涛; 雷剑文; 赵军; 上官声长; 宋红萍; 王新柱; 白欣
Original assignee: 华为技术有限公司
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-09-30
Also published as: CN113841341B; CN113841341A

Abstract

The present application provides a wireless communication device and an antenna switching method therefor. The wireless communication device comprises: a signal processing module, a switching switch, a first antenna and at least two second antennas. The first antenna and the at least two second antennas are connected to the signal processing module by means of the switching switch, the first antenna serves as a transmitting antenna, and the at least two second antennas serve as receiving antennas. The signal processing module compares the first antenna with the second antenna having the best performance among the at least two second antennas, and if the performance of the first antenna is relatively lower, controls the switching switch to switch the first antenna to the receiving antenna, and switches the second antenna having the best performance to the transmitting antenna. In the technical solution disclosed in the present application, at least two second antennas are used as standby antennas of a transmitting antenna, and when the first antenna, as a transmitting antenna, has poor performance, the second antenna having the best performance can be used as a transmitting antenna, thereby improving the communication performance of a wireless communication device.

Description

Wireless communication device and antenna switching method thereof

Technical field

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

Background technique

The terminal supporting the wireless communication function needs to have an antenna. Take a mobile phone as an example. As the wireless communication standards and frequency bands supported by the mobile phone increase, multiple antennas are generally installed in the mobile phone. Generally, there are at least one receiving antenna and one transmitting antenna in the antenna. In the prior art, in order to improve the communication effect of the mobile phone, the transmitting antenna and the receiving antenna are selected according to the antenna performance of the mobile phone. Exemplarily, take the first antenna A and the second antenna B as an example. In the initial setup, the second antenna B supports TRx (Tx+Rx, Tx: transmission or transmitter, Rx, reception or receiver; main transmission and reception), and the first antenna A supports DRx (DRx: diversity receiver) . When the antenna needs to be changed: the first antenna A supports TRx, and the second antenna B supports DRx. The selection rule for the above change is: the received signal strength of the Rx of the first antenna A is compared with the received signal strength of the Rx of the second antenna B. If the received signal strength of the current antenna is very good, it is judged that the TRx is very good, and the antenna does not switch. If once the antenna used as a TRx (assuming A), the received signal strength is poor and reaches a certain threshold, it will intermittently listen to another antenna used as a DRx (such as B), and compare the first with the respective received signal strengths The quality of antennas A and B. When the received signal strength of DRx is better than the received signal strength of TRx and meets the set difference start threshold, the antenna switching is started, which can be achieved by configuring a double-pole double-throw switch.

However, in the above-mentioned mobile phone antennas, since the main antennas are transmitting and receiving antennas, the selectivity of the antennas during switching is relatively low, which in turn affects the communication performance of the mobile phone.

Summary of the invention

The present application provides a wireless communication device and an antenna switching method thereof to improve the communication effect of the wireless communication device.

In a first aspect, a wireless communication device is provided. The wireless communication device is applied to a wireless communication device. The wireless communication device at least includes: a signal processing module, a switch, a first antenna, and at least two second antennas. Wherein, the signal processing module is used to process antenna signals, such as transmitting and receiving signals. The above-mentioned first antenna and the at least two second antennas are connected to the signal processing module through the switch, wherein the first antenna is used as a transmitting antenna, and the at least two second antennas are used as a receiving antenna. In addition, the signal processing module is further configured to compare the first antenna with the second antenna with the best performance among the at least two second antennas, and if the performance of the first antenna is lower, control the The switch switches the first antenna to the receiving antenna, and the second antenna with the best performance to the transmitting antenna. It can be seen from the above description that the technical solution disclosed in this application adopts at least two second antennas as backup antennas for transmitting antennas, and when the performance of the first antenna as the transmitting antenna is not good, the second antenna with the best performance can be used. Used as a transmitting antenna to improve the communication performance of wireless communication devices.

In a specific implementation, the signal processing module determines the second antenna with the best performance among the at least two second antennas according to the received signal strength of the at least two second antennas. The second antenna with the best performance is determined by comparing the received signal strength of at least two second antennas.

In a specific implementation, the signal processing module is further configured to control the performance of the first antenna when the difference between the performance of the first antenna and the performance of the second antenna with the best performance exceeds a set value. The switch switches the first antenna to the receiving antenna, and the second antenna with the best performance to the transmitting antenna. The transmitting antenna is changed only when the second antenna with the best performance is different from the first antenna by the set value.

In a specific implementation, the signal processing module compares the first antenna with the second antenna with the best performance among the at least two second antennas as follows: according to the first antenna and the The power of the second antenna with the best performance among the at least two second antennas is compared with the second antenna with the best performance among the first antenna and the at least two second antennas. Determine whether to change the transmitting antenna by comparing the power of the second antenna with the best performance and the power of the first antenna.

In a specific implementation, the at least two second antennas are selected partial antennas among the antennas of the wireless communication device. Divide the antennas in the wireless communication device, and select a spare antenna set according to the set conditions.

In a specific implementable implementation, the at least two second antennas are antennas with a high priority in the wireless communication device, or antennas with a higher power.

In a specific implementation, the signal processing module includes: a baseband subsystem and a radio frequency integrated circuit connected to the baseband subsystem; the baseband subsystem or the radio frequency integrated circuit is used to compare the at least two Compare the performance of the first antenna with the second antenna with the best performance among the at least two second antennas. If the performance of the first antenna is lower, control the switch to The first antenna is switched to a receiving antenna, and the second antenna with the best performance is switched to a transmitting antenna. The transmitting antenna can be replaced by the radio frequency integrated circuit or the baseband subsystem.

In a specific implementation, the radio frequency transmitting channel of the radio frequency integrated circuit is connected to the switch through a transmitting circuit; the radio frequency receiving channel of the radio frequency integrated circuit is connected to the switch through a receiving circuit. The signal is transmitted and received through different circuits.

In a specific implementation, the transmitting circuit includes: a power amplifier connected to the radio frequency transmitting channel, a transmitting front-end module connected to the power amplifier, and the transmitting front-end module connected to the switch.

In a specific implementation, the receiving circuit includes: a low noise amplifier connected to the radio frequency receiving channel, a receiving front-end module connected to the low noise amplifier, the receiving front-end module and the switch Switch connection.

In a specific implementation, the switch is a multi-pole multi-throw switch to switch between the second antenna and the first antenna.

In a second aspect, a wireless communication device is provided. The wireless communication device includes: a radio frequency integrated circuit, a switch coupled with the radio frequency integrated circuit, and the first antenna, the second antenna, and the third antenna coupled with the switch. Antenna; wherein the radio frequency integrated circuit is used to configure the working state of the switch, the working state of the switch includes a first state, a second state and a third state; wherein the switch is in the first state When the first antenna is configured as a transmitting antenna, the second antenna and the third antenna are configured as receiving antennas; when the switch is in the second state, the second antenna is configured as a transmitting antenna , The first antenna and the third antenna are configured as receiving antennas; when the switch is in the third state, the third antenna is configured as a transmitting antenna, and the first antenna and the second antenna It is configured as a receiving antenna. In the above technical solution, the first antenna, the second antenna, and the third antenna are used as backup antennas for the transmitting antenna, and when the performance of the first antenna as the transmitting antenna is not good, the second antenna or the second antenna with the best performance can be used. Three antennas are used as transmitting antennas to improve the communication performance of wireless communication devices.

In a specific implementation, when the working state of the switch is in the first state, the first antenna is the antenna with the best performance among the first antenna, the second antenna, and the third antenna; When the working state of the switch is in the second state, the second antenna is the antenna with the best performance among the first antenna, the second antenna, and the third antenna; when the working state of the switch is in the third In the state, the third antenna is the antenna with the best performance among the first antenna, the second antenna, and the third antenna. Thereby improving the performance of the transmitting antenna.

In a specific implementation, the radio frequency integrated circuit is configured to configure the switch to switch between the receiving antenna and the transmitting antenna with the best performance, and the antenna with the best performance is configured as the transmitting antenna.

In a specific implementation, the receiving antenna with the best performance is a receiving antenna with a high received signal strength.

In a specific implementation, the radio frequency integrated circuit is used to configure the transmitting antenna according to the power.

In a third aspect, an antenna switching method for a wireless communication device is provided. The wireless communication device includes a first antenna and at least two second antennas, wherein the first antenna is a transmitting antenna, and the at least two second antennas are receiving antennas. Antenna; the method includes the following steps:

Compare the performance of the first antenna with the second antenna with the best performance. If the performance of the first antenna is lower, switch the first antenna to a receiving antenna, and switch the second antenna with the best performance to a transmitting antenna. antenna.

It can be seen from the above description that the technical solution disclosed in this application adopts at least two second antennas as backup antennas for transmitting antennas, and when the performance of the first antenna as the transmitting antenna is not good, the second antenna with the best performance can be used. Used as a transmitting antenna to improve the communication performance of wireless communication devices.

In a specific implementation solution, the method further includes: determining the second antenna with the best performance among the at least two second antennas according to the received signal strength of the at least two second antennas. The second antenna with the best performance is determined by comparing the received signal strength of at least two second antennas.

In a specific implementation solution, it further includes: when the difference between the performance of the first antenna and the performance of the second antenna with the best performance exceeds a set value, controlling the switch to turn the The first antenna is switched to a receiving antenna, and the second antenna with the best performance is switched to a transmitting antenna. The transmitting antenna is changed only when the second antenna with the best performance is different from the first antenna by the set value.

In a specific implementation, the comparison between the first antenna and the second antenna with the best performance among the at least two second antennas is specifically: according to the first antenna and the at least two second antennas The power of the second antenna with the best performance among the second antennas is compared with the second antenna with the best performance among the first antenna and the at least two second antennas. Determine whether to change the transmitting antenna by comparing the power of the second antenna with the best performance and the power of the first antenna.

In a specific implementation, the at least two second antennas are selected partial antennas among the antennas of the wireless communication device. Divide the antennas in the wireless communication device, and select a spare antenna set according to it.

In a fourth aspect, an embodiment of the present application provides a signal processing module, where the signal processing module includes a processor, 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 with the processor, and when the processor executes the program instructions stored in the memory, the method described in the second aspect can be implemented. The signal processing module may also include a communication interface for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. It can be a network device or a terminal device, etc.

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

The processor is configured to call instructions stored in the memory, so that the device executes the third aspect and any one of the possible design methods of the third aspect of the embodiments of the present application.

In a fifth aspect, embodiments of the present application also provide a computer-readable storage medium, including instructions, which when run 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. The chip system includes a processor and may also include a memory, which is used to implement the third aspect and any one of the possible design methods of the third aspect. The chip system can be composed of chips, or it can include chips and other discrete devices.

In a seventh aspect, the embodiments of the present application also provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the first aspect and any one of the possible design methods of the first aspect, or the third Aspect and any possible design method of the third aspect.

Description of the drawings

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

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

FIG. 3 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application;

Fig. 4 is a handover flowchart of a wireless communication device provided by an embodiment of the application;

FIG. 5 is a flowchart of another wireless communication device provided by an embodiment of this application;

Fig. 6 is a structural block diagram of a signal processing module provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of a wireless communication device provided by an embodiment of the application.

Detailed ways

To facilitate understanding, first, an application scenario of the wireless communication device provided in the embodiment of the present application will be explained. The wireless communication device 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 device provided in the embodiments of the present application can be applied to both terminals and base stations, and these terminals and base stations are separately set up with a main set of transmitting antennas and a main set of receiving antennas.

It should be understood that the wireless communication device can comply with the wireless communication standards of the third generation partnership project (3GPP), and can also comply with other wireless communication standards, such as the Institute of Electrical and Electronics Engineers (IEEE) ) 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 device may also include other numbers of terminals and base stations. In addition, 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 the radio access technology (RAT) supported by the system and the radio resource configuration specified by the system, such as the basic configuration of the radio frequency band and carrier. The pre-defined configuration of these systems can be used as a part of the standard protocol of the wireless communication device, or determined by the interaction between the terminal and the base station. The content of the relevant standard protocol may be pre-stored in the memory of the terminal and the base station, or embodied in the hardware circuit or software code of the terminal and the base station.

Base stations usually belong to operators or infrastructure providers, and these vendors are responsible for operation or maintenance. The base station can provide communication coverage for a specific geographic area through an integrated or external antenna. One or more terminals located within the communication coverage area of the base station can all access the base station. The base station may also be called a wireless access point (access point, AP), or a transmission reception point (transmission reception point, TRP). Specifically, the base station may be a generation Node B (gNB) in a 5G new radio (NR) system, or an evolution node B (evolutional Node B, eNB) in a 4G long term evolution (LTE) system. )Wait.

The terminal has a closer relationship with the user, and is also called user equipment (UE), or subscriber unit (SU), and customer-premises equipment (CPE). Compared with a base station that is usually placed in a fixed location, a terminal often moves with the user, and is sometimes called a mobile station (mobile station, MS). In addition, some network equipment, such as a relay node (RN), may also be considered as a terminal because it has a UE identity or belongs to a user. 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 home appliances) and smart city devices (such as surveillance cameras and street lights).

FIG. 2 shows a specific structure of a wireless communication device provided by an embodiment of the present application. The wireless communication device includes a radio frequency integrated circuit 10, an antenna radiator, and a connection circuit connecting the radio frequency integrated circuit 10 and the antenna radiator. The radio frequency integrated circuit 10 includes a radio frequency transmitting channel and a radio frequency receiving channel, wherein the aforementioned channels (the radio frequency transmitting channel and the radio frequency receiving channel) in the radio frequency integrated circuit 10 are correspondingly connected to the antenna radiator. Exemplarily, the radio frequency integrated circuit 10 has one radio frequency transmitting channel and two radio frequency receiving channels, the antenna radiator includes a first antenna 20a and two second antennas 20b, and the first antenna 20a is connected to the radio frequency transmitting channel. The second antenna 20b is connected to the radio frequency receiving channel. In the embodiment of the present application, the number of radio frequency transmitting channels is not limited, but the number of radio frequency receiving channels is at least two, and the number of corresponding second antennas 20b is also at least two. It should be understood that when other numbers of radio frequency receiving channels or radio frequency transmitting channels are used, the number of antenna radiators also changes accordingly.

Continuing to refer to FIG. 2, the connection circuit provided by the embodiment of the present application includes a transmitting circuit 40 a, two receiving circuits 40 b, and a switch 30. The radio frequency transmitting channel of the radio frequency integrated circuit 10 is connected to the switch 30 through the transmitting circuit 40a, the radio frequency receiving channel of the radio frequency integrated circuit 10 is connected to the switch 30 through the receiving circuit 40b, and the number of the transmitting circuit 40a and the receiving circuit 40b corresponds to The number of radio frequency transmitting channels corresponds to the number of radio frequency receiving channels. The transmitting circuit 40a and the two receiving circuits 40b are arranged side by side. The radio frequency integrated circuit 10 and the switch 30 are respectively located at both ends of the transmitting circuit 40a and the receiving circuit 40b. The first end of the switch 30 is connected to the front-end transmitting module 42 and the front-end receiving module respectively. 44 is connected, the second end of the switch 30 is connected to the first antenna 20a and the two second antennas 20b respectively. The first end can be a stationary end, and the second end can be a movable end or a first end The moving end, the second end is the stationary end. The switch 30 is a multi-pole multi-throw switch or a single-pole multi-throw switch, or other switches that can realize multi-circuit switching.

The transmitting circuit 40a and the receiving circuit 40b may choose different circuits. For example, the transmitting circuit 40a may include a power amplifier 41 connected to the radio frequency transmission channel, and a front-end transmission module 42 connected to the power amplifier 41, wherein the front-end transmission module 42 can contain different devices, such as filters. The receiving circuit 40b may include a low-noise amplifier 43, a front-end receiving module 44 connected to the low-noise amplifier 43, and the front-end receiving module 44 may include different devices, such as a filter. The transmitting circuit 40a and the receiving circuit 40b may also include other known signal-adjustable devices, which will not be repeated here.

Continuing to refer to FIG. 2, the first antenna 20a and the two second antennas 20b can both be used as receiving antennas and transmitting antennas. Exemplarily, the first antenna 20a may be the main set of transmitting antennas, and the two second antennas 20b may be the main set of receiving antennas and the diversity receiving antennas, respectively. The first antenna 20a and the second antenna 20b can be switched through the switch 30. When the first antenna 20a is connected to the radio frequency transmitting channel through the switch 30, and the two second antennas 20b are connected to the radio frequency receiving channel through the switch 30, the first antenna 20a is connected to the radio frequency receiving channel through the switch 30. One antenna 20a is used as a transmitting antenna, and two second antennas 20b are used as receiving antennas. When the first antenna 20a and one of the second antennas 20b are connected to the radio frequency receiving channel through the switch 30, and the other second antenna 20b is connected to the radio frequency transmitting channel through the switch 30, the second antenna 20b is connected to the radio frequency transmitting channel As the transmitting antenna, the other second antenna 20b and the first antenna 20a are used as receiving antennas.

Unlike the wireless communication device in the prior art that integrates the transmitting function and the receiving function into one main antenna by using a duplexer, the wireless communication device provided in the embodiment of the present application adopts a separate filter to achieve implementation through different antennas. Transmit and receive signals. When the performance of the transmitting antenna is not good, the radio frequency integrated circuit 10 can select the antenna with better performance among the above-mentioned antennas (the first antenna 20a, the second antenna 20b) for adjustment. To facilitate understanding, the adjustment process of the radio frequency integrated circuit 10 will be described in detail below.

Take the first antenna 20a as the transmitting antenna and the two second antennas 20b as the receiving antenna as an example. The radio frequency integrated circuit 10 compares the performance of the two second antennas 20b, and compares the first antenna 20a with the second antenna 20b with the best performance. If the performance of the first antenna 20a is lower, the switch 30 is controlled to turn the first antenna 20a is switched to a receiving antenna, and the second antenna 20b with the best performance is switched to a transmitting antenna. When there are multiple second antennas 20b, the radio frequency integrated circuit 10 compares the performance of at least two second antennas 20b to find the second antenna 20b with the best performance.

When the radio frequency integrated circuit 10 switches between the transmitting antenna and the receiving antenna, it first determines whether the performance of the first antenna 20a is good. The specific determination can be based on the antenna power. The higher the antenna power, the worse the performance of the antenna. When the first antenna 20a is working, the radio frequency integrated circuit 10 can determine the power of the first antenna 20a, and when the power of the first antenna 20a is relatively high, it is determined that the performance of the first antenna 20a is relatively poor. The radio frequency integrated circuit 10 starts to judge the performance of the two second antennas 20b. When the second antenna 20b is used as a receiving antenna, the best second antenna can be determined according to the received signal strength of at least two second antennas 20b. Specifically, by comparing the received signal strength between the two second antennas 20b, the greater the received signal strength, the better the performance of the antenna. The radio frequency integrated circuit 10 determines the second antenna 20b with the best performance by judging the received signal strength of the two second receiving antennas. The radio frequency integrated circuit 10 compares the first antenna 20a with the second antenna 20b with the best performance. If the performance of the first antenna 20a is higher than the second antenna 20b with the best performance, no switching is performed. If the performance of the first antenna 20a is low For the second antenna 20b with the best performance, the radio frequency integrated circuit 10 controls the switch 30 to connect the second antenna 20b with the best performance to the radio frequency transmitting channel, and the second antenna 20b with the best performance is used as the transmitting antenna; 20a is connected to the radio frequency receiving channel, and the first antenna 20a serves as a receiving antenna.

When comparing the first antenna 20a with the second antenna 20b with the best performance, the radio frequency integrated circuit 10 compares the first antenna 20a with the second antenna with the best performance according to the power of the first antenna 20a and the second antenna 20b with the best performance. 20b. For this reason, the radio frequency integrated circuit 10 first switches the second antenna 20b with the best performance to the transmitting antenna through the switch 30, and compares the power of the first antenna 20a with the power when the second antenna 20b with the best performance is used as the transmitting antenna; The power of the first antenna 20a is higher than the power of the second antenna 20b with the best performance, and the performance of the first antenna 20a is lower than the performance of the second antenna 20b with the best performance. The antenna with the best performance is determined by judging the power of the two antennas, and the antenna with the best performance is switched to the transmitting antenna. If the second antenna 20b with the best performance is the best performance, the second antenna 20b with the best performance is the transmitting antenna, and the first antenna 20a is the receiving antenna; if the first antenna 20a is the best performance, the The first antenna 20a is still switched to a transmitting antenna, and the second antenna 20b with the best performance is still used as a receiving antenna.

When determining the performance of the two second antennas 20b, since the two second antennas 20b are initially receiving antennas, there is no corresponding PA power. Therefore, in order to obtain the PA power of the standby antenna, the standby antenna can be temporarily used as a transmitting antenna by switching the antenna switch temporarily, so as to obtain the PA power of the standby antenna. This kind of temporary antenna switching has a certain loss in system performance. For example, a temporary antenna switching may affect 1% of the performance, so it cannot be too frequent. Therefore, after first determining the second antenna 20b with the best performance based on the received signal strength between the second antennas 20b, compare the second antenna 20b with the best performance with the first antenna 20a. At this time, you only need to obtain The PA power of a spare antenna, instead of obtaining the PA power of all the spare antennas, helps to reduce the performance loss.

When the number of second antennas 20b is at least two, the processing method of the radio frequency integrated circuit 10 still adopts the above-mentioned method. The wireless communication device as shown in FIG. 3 includes 5 antennas, which are respectively a main transmitting antenna (first antenna 20a), a main receiving antenna (second antenna 20b), a diversity receiving antenna (second antenna 20b), MIMO1 antenna (second antenna 20b) and MIMO2 antenna (second antenna 20b). Among them, the main set receiving antenna, the diversity receiving antenna, the MIMO1 antenna, and the MIMO2 antenna are all receiving antennas. When comparing the performance of the second antenna 20b, the received signal strength of all the second antennas b is compared.

In the above technical solution, two second antennas 20b or at least two second antennas 20b are used as a backup antenna set of the transmitting antenna. The radio frequency integrated circuit 10 can select a spare antenna set of the transmitting antenna among the antennas in the wireless communication device, and at least two second antennas 20b are selected partial antennas among the antennas of the wireless communication device. Different methods can be used for specific selection. For example, all the receiving antennas in the wireless communication device can be used as the backup antenna set of the transmitting antenna; Different settings can be used for the predetermined conditions. For example, the setting conditions can be selected according to the priority of the antennas set in the wireless communication device. For example, when the 5 antennas in Figure 3 are used, a part of the antennas can be selected as the standby Antenna set. For example, you can query the antenna priority set by the system in the wireless communication device. For example, the current main transmit antenna, main receive antenna, MIMO1 antenna and MIMO2 antenna are the antennas that are given priority to the main card, and the diversity receive antenna is given priority to the secondary card. The antenna used, then the backup antenna set can only include the current main set receiving antenna, MIMO1 antenna and MIMO2 antenna, but not the diversity receiving antenna. Of course, the standby antenna can also include a transmitting antenna before switching, as shown in Fig. 2 for the main set of transmitting antennas. When the main transmit antenna is switched to the receive antenna, this antenna also serves as an antenna in the backup antenna set.

When switching the transmitting antenna, if the performance of the second antenna 20b with the best performance is better than the performance of the current transmitting antenna (first antenna 20a), the second antenna 20b with the best current performance is switched to the transmitting antenna; otherwise, the current The transmitting antenna remains unchanged. Among them, the performance of the second antenna 20b with the best performance is better than the performance of the current transmitting antenna, and a comparison threshold can be set. An exemplary difference between the performance of the first antenna 20a and the performance of the second antenna 20b with the best performance is When the value exceeds the set value, the radio frequency integrated circuit 10 can control the switch 30 to switch the first antenna 20a to the receiving antenna, and the second antenna 20b with the best performance to the transmitting antenna. When passing power comparison, the comparison threshold can be set as the power threshold P. Assuming that the power corresponding to the performance of the current first antenna 20a is assumed to be M, and the power corresponding to the performance of the second antenna 20b with better performance is assumed to be N, when M-N>P, the current standby antenna is switched to the transmitting antenna. M-N=P is a critical situation, and it can be switched or not.

In the above technical solution, the radio frequency integrated circuit 10 is used to switch the transmitting antenna, but when the wireless communication device contains other information processing modules, other information processing modules can also be used to control the transmitting antenna switching. For example, the signal processing module includes : Baseband subsystem and radio frequency integrated circuit 10 connected with the baseband subsystem. The baseband subsystem or the radio frequency integrated circuit 10 can be used to control and switch the transmitting antenna. Specifically, the radio frequency integrated circuit 10 or the baseband subsystem may be used to compare the performance of the at least two second antennas 20b, and the first antenna 20a may be compared with the second antenna 20b with the best performance among the at least two second antennas 20b. If the performance of an antenna 20a is low, the switch 30 is controlled to switch the first antenna 20a to a receiving antenna, and the second antenna 20b with the best performance to a transmitting antenna. The transmission antenna can be replaced by the radio frequency integrated circuit 10 or the baseband subsystem. Alternatively, the radio frequency integrated circuit 10 or the baseband subsystem can control the switch 30 to turn the radio frequency integrated circuit 10 when the difference between the performance of the first antenna 20a and the performance of the second antenna 20b with the best performance exceeds a set value. One antenna 20a is switched to a receiving antenna, and the second antenna 20b with the best performance is switched to a transmitting antenna.

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

In addition, because the radio frequency signal is an analog signal, and the signal processed by the baseband subsystem is mainly a digital signal, 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 embodiments of the present application, the analog-to-digital conversion device may be arranged in the baseband subsystem or the radio frequency integrated circuit.

In order to facilitate the understanding of the above-mentioned wireless communication device provided in the embodiment of the present application, three antennas are taken as an example to illustrate the switching state thereof.

The embodiment of the present application provides a wireless communication device. The wireless communication device includes: a radio frequency integrated circuit, a switch coupled with the radio frequency integrated circuit, and a first antenna, a second antenna, and a third antenna coupled with the switch; wherein, The radio frequency integrated circuit is used to configure the working state of the switch. When there are three antennas, the working state of the switch includes a first state, a second state and a third state; among them, when the switch is in the first state, the first antenna is configured as a transmitting antenna, and the second antenna and the third The antenna is configured as a receiving antenna; when the switch is in the second state, the second antenna is configured as a transmitting antenna, and the first and third antennas are configured as receiving antennas; when the switch is in the third state, the third antenna is configured To transmit antennas, the first antenna and the second antenna are configured as receiving antennas. When the radio frequency integrated circuit configures the state of the above-mentioned switch, it is necessary to ensure that when the working state of the switch is in the first state, the first antenna is the antenna with the best performance among the first antenna, the second antenna, and the third antenna; When the working state of the switch is in the second state, the second antenna is the best antenna among the first antenna, the second antenna, and the third antenna; when the working state of the switch is in the third state, the third antenna is the first antenna The antenna with the best performance among the antenna, the second antenna, and the third antenna. Thereby improving the performance of the transmitting antenna. That is, in the embodiment of the present application, when the radio frequency integrated circuit is configured with the working state of the switch, it is switched according to the standard of switching the antenna with the best performance to the transmitting antenna.

During specific switching, the radio frequency integrated circuit is used to configure the switch to switch between the receiving antenna and the transmitting antenna with the best performance, and the antenna with the best performance is configured as the transmitting antenna. That is, the radio frequency integrated circuit configuration switch switches between two states. One of the states is: when the performance of the receiving antenna with the best performance is better than that of the transmitting antenna, the receiving antenna with the best performance is configured as the transmitting antenna. The antenna is configured as a receiving antenna; another state is: when the performance of the receiving antenna with the best performance is lower than that of the transmitting antenna, the receiving antenna with the best performance is still configured as the receiving antenna, and the original transmitting antenna is still the transmitting antenna.

When the radio frequency integrated circuit configures the antenna switch state, it first determines the receiving antenna with the best performance among the receiving antennas according to the signal receiving strength of the receiving antenna. When the receiving antenna is working, the radio frequency integrated circuit can record the signal receiving strength of the receiving antenna, and the radio frequency forming circuit determines the receiving antenna with high signal receiving strength as the receiving antenna with the best performance.

The radio frequency integrated circuit configures the transmitting antenna according to the power, that is, the power between the receiving antenna and the transmitting antenna with the best comparison performance, and this power is the transmitting power.

In order to facilitate understanding of how the wireless communication device provided in the embodiment of the present application switches antennas, it will be described in detail below in conjunction with a specific process.

As shown in FIG. 4, FIG. 4 shows a specific antenna switching flowchart of a wireless communication device. The wireless communication device shown in FIG. 4 includes a first antenna A, a second antenna B, and a second antenna C; Among them, the first antenna A is used as the main set of transmitting antennas, the second antenna B is used as the main set of receiving antennas, and the second antenna C is used as the diversity receiving antenna. When switching the transmitting antenna, perform the following steps.

Step 001: Determine the performance of the first antenna A, if the antenna performance of the first antenna A is better, then end; if the performance of the first antenna A is poor, then go to step 002.

Specifically, the performance of the first antenna A can be judged by the power of the first antenna A. The greater the power of the first antenna A, the worse the performance of the first antenna A. The radio frequency integrated circuit judges the power M of the first antenna A according to the power of the first antenna A during operation. When M exceeds the set value, it is determined that the performance of the first antenna A is relatively poor, and step 002 is executed.

Step 002: Compare the performance of the second antenna B and the second antenna C, and determine the second antenna with the best performance.

Specifically, the received signal strength between the second antenna B and the second antenna C can be compared, where the greater the received signal strength, the better the performance of the antenna. Therefore, the performance of the second antenna B and the second antenna C can be determined by comparing the received signal strength of the second antenna B and the second antenna C during interception and service. The radio frequency integrated circuit determines the received signal strength of the two second receiving antennas, and determines the antenna with the best performance.

When specifically comparing the second antenna B and the second antenna C, the second antenna B and the second antenna C belong to the backup antenna set. When the number of receiving antennas is multiple, the radio frequency integrated circuit can select a spare antenna set of the transmitting antenna from the antennas in the wireless communication device, and the selection can be made according to different rules. Exemplarily, the receiving antennas may be randomly selected or selected in turn in a certain order, or first, using the received signal strength recorded by each receiving antenna when receiving signals, the antenna with the highest received signal strength may be selected as the backup antenna. It is also possible to filter a part of the receiving antennas as a backup antenna set according to the set conditions. The above set conditions can adopt different settings. For example, the set conditions can be selected according to the priority of at least two second antennas set in the wireless communication device. Spare antenna set, when using the 5 antennas in Figure 2, when selecting some antennas as spare antenna set, you can use: query the antenna priority set by the system in the wireless communication device, such as the current main set of transmit antennas, main set of receive antennas , MIMO1 antenna and MIMO2 antenna are the antennas that are given priority to the main card, and the diversity receiving antenna is the antenna that is given priority to the secondary card. Then the backup antenna set can only include the current main set receiving antenna, MIMO1 antenna and MIMO2 antenna, but not Diversity receiving antenna. Of course, the standby antenna can also include a transmitting antenna before switching, as shown in Fig. 2 for the main set of transmitting antennas. When the main transmit antenna is switched to the receive antenna, this antenna also serves as an antenna in the backup antenna set.

Step 003: Compare the better performance of the second antenna B and the second antenna C with the first antenna A; if the performance of the first antenna A is lower, compare the performance of the second antenna B and the second antenna C The good antenna is switched to the transmitting antenna, and the first antenna A is switched to the receiving antenna.

Specifically, when comparing the first antenna A with the second antenna B or the second antenna C with the best performance, the judgment can be made by comparing the power of the two antennas. Since the second antenna B or the second antenna C cannot measure the power when used as the receiving antenna, the second antenna B or the second antenna C with the best performance can be temporarily switched to the transmitting antenna through the radio frequency integrated circuit first through the switch. The power N of the second antenna B or the second antenna C. Compare the power M of the first antenna A with the power N of the second antenna B or the second antenna C with the best performance; if M>N, no switching is performed; if M is less than N, the second antenna B or Antenna C is switched to a transmitting antenna. For the specific switching method, refer to the related description in FIG. 2. The antenna with the best performance is determined by judging the power of the two antennas, and the antenna with the best performance is switched to the transmitting antenna. If the second antenna with the best performance is the best performance, control the switch to use the second antenna with the best performance as the transmitting antenna, and the first antenna A as the receiving antenna; if the first antenna A is the best performance , The first antenna A is still switched to the transmitting antenna, and the second antenna with the best performance is still used as the receiving antenna.

When determining the performance of the two second antennas B, since the two second antennas B are receiving antennas at the beginning, there is no corresponding PA. Therefore, in order to obtain the PA power of the standby antenna, the standby antenna can be temporarily used as a transmitting antenna by switching the antenna switch temporarily, so as to obtain the PA power of the standby antenna. This kind of temporary antenna switching has a certain loss in system performance. For example, a temporary antenna switching may affect 1% of the performance, so it should not be too frequent. Therefore, firstly determine the second antenna B with the best performance based on the received signal strength between the second antenna B, and then compare the second antenna B with the best performance with the first antenna A. At this time, you only need to obtain The PA power of a spare antenna, instead of obtaining the PA power of all the spare antennas, helps to reduce the performance loss.

In the above steps, step 002 and step 003 can be performed when the performance of the first antenna A is low, or step 002 and step 003 can be performed periodically, so as to select a transmitting antenna with better performance, thereby saving power consumption.

Different from the prior art using the received signal strength as an indicator for judging the performance of the antenna, the present invention uses the PA power as an indicator. The received signal strength reflects the performance when the antenna receives the signal, and the PA power reflects the power when the antenna transmits the signal. It is more accurate to use the PA power as an indicator.

Among them, the PA power (also referred to as the PA power) refers to the power parameter of the PA when the antenna transmits a signal, and the power parameter characterizes the working state of the PA. Generally, the signal power radiated by the antenna needs to refer to the protocol requirements. Assuming that the signal power radiated by the antenna remains unchanged, if the antenna performance is good, the PA power can be smaller, and if the antenna performance is poor, the PA power should be larger. The power parameter of the PA is a parameter maintained internally by the terminal, and the baseband chip can directly read this parameter.

Compared with the prior art, the number of spare antennas in the present invention can be multiple, which is recorded as a spare antenna set, while the DRx antenna of the existing TAS scheme usually refers to one. Therefore, in step 002, it is possible to first determine which backup antennas are in the backup antenna set, and then select a backup antenna in the backup antenna set, and finally determine the performance of the backup antenna.

As shown in Figure 5, Figure 5 shows the flow of another switch.

The wireless communication device shown in FIG. 5 includes a first antenna A, a second antenna B, and a second antenna C; wherein, the first antenna A is used as the main set of transmitting antennas, the second antenna B is used as the main set of receiving antennas, and the second antenna is Antenna C serves as a diversity receiving antenna. When switching the transmitting antenna, perform the following steps.

Step 001: Determine the performance of the first antenna A and set a power threshold Z. When the power of the first antenna A M<Z, determine that the performance of the first antenna A is better and end the replacement; if M>Z, then An antenna A has poor performance, and step 002 is executed.

Specifically, the performance of the first antenna A can be judged by the power of the first antenna A, and a power threshold Z can be set. When the power of the first antenna A M>Z, it is determined that the performance of the first antenna A is relatively poor, and the handover is initiated. Transmit the antenna and start step 002. If M<Z, it is determined that the performance of the first antenna A is better. When M=Z, it can be switched or not.

Step 003: Compare the better performance of the second antenna B and the second antenna C with the first antenna A; if the difference between the performance of the first antenna A and the performance of the second antenna with the best performance exceeds the set value When the time, the second antenna with the best performance is switched to the transmitting antenna.

Specifically, when comparing the first antenna A with the second antenna B or the second antenna C with the best performance, the judgment can be made by comparing the power of the two antennas. Since the second antenna B or the second antenna C cannot measure the power when used as the receiving antenna, the second antenna B or the second antenna C with the best performance can be temporarily switched to the transmitting antenna through the radio frequency integrated circuit first through the switch. The power N of the second antenna B or the second antenna C. The comparison threshold can be set as the power threshold P. Compare the power M of the first antenna A with the power N of the second antenna B or the second antenna C with the best performance. When MN>P, switch the second antenna with the best performance to the transmitting antenna; when MN=P , Is a critical situation, the transmitting antenna can be switched or not; when MN<P, the transmitting antenna is not switched.

When determining the performance of the two second antennas, since the two second antennas are receiving antennas at the beginning, there is no corresponding PA. Therefore, in order to obtain the PA power of the standby antenna, the standby antenna can be temporarily used as a transmitting antenna by switching the antenna switch temporarily, so as to obtain the PA power of the standby antenna. This kind of temporary antenna switching has a certain loss in system performance. For example, a temporary antenna switching may affect 1% of the performance, so it cannot be too frequent. Therefore, firstly determine the second antenna B with the best performance based on the received signal strength between the second antenna B, and then compare the second antenna B with the best performance with the first antenna A. At this time, you only need to obtain The PA power of a spare antenna, instead of obtaining the PA power of all the spare antennas, helps to reduce the performance loss.

In an example, as shown in FIG. 6, the signal processing module 1000 is used to implement the function of the terminal device in the foregoing 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, which is configured to implement the functions of the apparatus in the foregoing method. For example, the processor 1001 may be used 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 here.

In some embodiments, the signal processing module 1000 may further include at least one memory 1002 for storing program instructions and/or data. The memory 1002 is coupled with the processor 1001. The coupling in the embodiments of the present application is an interval coupling or a communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 1002 may also be located outside the signal processing module 1000. The processor 1001 can operate in cooperation 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 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 can communicate with other devices. Exemplarily, the communication interface 1003 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. The processor 1001 uses the communication interface 1003 to send and receive data, and is used to implement the method in the foregoing embodiment. Exemplarily, the communication interface 1003 can be used to transmit signals.

In an example, the signal processing module 1000 is used to implement the functions of the modules in the foregoing method, and the signal processing module 1000 may be a network device or a device in the network device. The signal processing module 1000 includes at least one processor 1001, configured to implement the functions of the modules in the foregoing method. For example, the processor 1001 may be used to determine the performance of the first antenna and the second antenna. For details, 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 a communication interface 1003 for communicating with other devices through a transmission medium, so that the apparatus used in the signal processing module 1000 can communicate with other devices. Exemplarily, the communication interface 1003 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. The processor 1001 uses the communication interface 1003 to send and receive data, and is used to implement the method in the foregoing embodiment. 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 aforementioned communication interface 1003, the processor 1001, and the memory 1002. For example, in the embodiment of the present application in FIG. 6, 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, and a control bus.

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

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random-access memory (random-access memory, RAM). The memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this. The memory in the embodiments of the present application may also be a circuit or any other device capable of realizing 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 by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD for short)), or a semiconductor medium (for example, SSD).

Fig. 7 is a wireless communication device provided by an embodiment of the application. The wireless communication device may be a terminal or a base station in the embodiment of the present application. As shown in FIG. 7, the wireless communication device includes a main body 100 and is arranged in the main body 100. The main body 100 may include an application subsystem 104, a memory 103 (memory), a mass storage 105 (massive storage), and a baseband subsystem 102. Radio frequency integrated circuit 101 (radio frequency intergreted circuit, RFIC), radio frequency front end (RFFE) device 106, and antenna (antenna, ANT), these devices can be coupled through various interconnection buses or other electrical connection methods.

In FIG. 7, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer >1. Tx represents the transmission path, Rx represents the reception path, and different numbers represent different paths. FBRx represents the feedback receiving path, PRx represents the main receiving path, and DRx represents the diversity receiving path. HB stands for high frequency and LB stands for low frequency. Both refer to the relative high and low of the frequency. BB stands for baseband. It should be understood that the marks and components in FIG. 7 are for illustrative purposes only, and are only used 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 receiving channel (RF receive path) and a radio frequency transmitting channel (RF transmit path). The radio frequency receiving channel can receive radio frequency signals through an antenna, and process the radio frequency signals (such as amplifying, filtering, and down-converting) to obtain a baseband signal, and pass it to the baseband subsystem 102. The radio frequency transmission channel can receive the baseband signal from the baseband subsystem 102, perform radio frequency processing (such as up-conversion, amplification, and filtering) on the baseband signal to obtain a radio frequency signal, and finally radiate the radio frequency signal into space through an 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), and a local oscillator (LO). ), filters and other electronic devices, which can be integrated into one or more chips as required. The antenna can sometimes be considered part of the radio frequency subsystem.

The baseband subsystem 102 can extract useful information or data bits from the baseband signal, or convert the information or data bits into a baseband signal to be transmitted. These information or data bits can be data representing user data or control information such as voice, text, and video. For example, the baseband subsystem 102 can implement signal processing operations such as modulation and demodulation, encoding and decoding. Different wireless access technologies, such as 5G NR and 4G LTE, often have different baseband signal processing operations. Therefore, in order to support the convergence of multiple mobile communication modes, the baseband subsystem 102 may include multiple processing cores or multiple HACs at the same time. The baseband subsystem 102 is generally integrated into one or more chips, and the chip integrating the baseband subsystem 102 is generally called 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 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 arranged in the baseband subsystem 102 or the radio frequency subsystem.

Among them, the application subsystem 104 can be used as the main control system or main computing system of the wireless communication device, used to run the main operating system and application programs, manage the software and hardware resources of the entire wireless communication device, and can provide a user operation interface for the user. The application subsystem 104 may include one or more processing cores. In addition, the application subsystem 104 may also include driver software related to other subsystems (for example, the baseband subsystem 102). The baseband subsystem 102 may also include one or more processing cores, as well as a hardware accelerator (HAC) and cache.

In the embodiment of the present application, the radio frequency subsystem may include an independent antenna, an independent RF front end (RFFE) device 106, and an independent radio frequency integrated circuit 101. The radio frequency integrated circuit 101 is sometimes called a receiver, transmitter, or transceiver. The antenna, the radio frequency front-end device 106, and the radio frequency processing chip can all be manufactured and sold separately. Of course, the radio frequency subsystem can also adopt different devices or different integration methods based on power consumption and performance requirements. For example, part of the 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 the embodiment of the present application, the baseband subsystem 102 may be used as an independent chip, and the chip may be called a modem (modem) chip. The hardware components of the baseband subsystem 102 can be manufactured and sold in units of modem chips. The modem chip is sometimes called a baseband chip or baseband processor. In addition, the baseband subsystem 102 can also be further integrated in the SoC chip, and manufactured and sold in units of the SoC chip. 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 can also be online via the network. Way to download and update these software components.

It should be understood that, in the solution provided by the present application, the wireless communication device may be a communication device, or part of the device in the wireless communication device, such as a chip, a combination of chips, or a module containing a chip and other integrated circuit 101 products. The wireless communication device may be a computer device that supports wireless communication functions.

Specifically, the wireless communication device may be a terminal such as a smart phone, or may be a wireless access network device such as a base station. In terms of function, 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 (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 chip, a chip platform, or a chip package.

A system chip is also called a system on a chip (SoC), or SoC chip for short, which 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. A chip platform or chip set piece can be understood as multiple chips that need to be used in conjunction. These multiple chips are often packaged independently, but the chips need to cooperate with each other to complete the wireless communication function together. For example, the baseband chip (or SoC chip integrated with the baseband chip) and the radio frequency integrated circuit 101 are usually packaged separately, but they need to be used together.

Regardless of whether the wireless communication device is a base station or a terminal, handover can be performed by the above-mentioned method to improve the communication effect of the wireless communication device.

Obviously, those skilled in the art can make various changes and modifications to this application without departing from the protection scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A wireless communication device, characterized by comprising: a signal processing module, a switch, a first antenna, and at least two second antennas;

The signal processing module is used for transmitting and receiving signals;

The first antenna and the at least two second antennas are connected to the signal processing module through the switch, wherein the first antenna is used as a transmitting antenna, and the at least two second antennas are used as a receiving antenna;

The signal processing module is also used for:

Comparing the first antenna with the second antenna with the best performance among the at least two second antennas,

If the performance of the first antenna is low, control the switch to switch the first antenna to a receiving antenna, and switch the second antenna with the best performance to a transmitting antenna.
The wireless communication device according to claim 1, wherein the signal processing module is configured to determine the second antenna with the best performance among the at least two second antennas according to the received signal strength of the at least two second antennas. Two antennas.
The wireless communication device according to claim 1 or 2, wherein the signal processing module compares the first antenna with the second antenna with the best performance among the at least two second antennas specifically as follows:

According to the power of the second antenna with the best performance among the first antenna and the at least two second antennas, compare the second antenna with the best performance among the first antenna and the at least two second antennas.
The wireless communication device according to any one of claims 1 to 3, wherein the at least two second antennas are selected partial antennas among antennas of the wireless communication device.
The wireless communication device according to claim 4, wherein the at least two second antennas are antennas with a high priority in the wireless communication device.
The wireless communication device according to any one of claims 1 to 5, wherein the signal processing module comprises: a baseband subsystem and a radio frequency integrated circuit connected to the baseband subsystem;

The baseband subsystem or the radio frequency integrated circuit is used to compare the performance of the at least two second antennas, and compare the first antenna with the second antenna with the best performance among the at least two second antennas, If the performance of the first antenna is low, control the switch to switch the first antenna to a receiving antenna, and switch the second antenna with the best performance to a transmitting antenna.
The wireless communication device according to claim 6, wherein the radio frequency transmitting channel of the radio frequency integrated circuit is connected to the switch through a transmitting circuit;

The radio frequency receiving channel of the radio frequency integrated circuit is connected to the switch through a receiving circuit;

The radio frequency received line is connected to the switch through the receiving circuit.
The wireless communication device according to claim 7, wherein the transmitting circuit comprises: a power amplifier connected to the radio frequency transmission channel, a transmitting front-end module connected to the power amplifier, and the transmitting front-end module is connected to the power amplifier. The switch connection is described.
The wireless communication device according to claim 7 or 8, wherein the receiving circuit comprises: a low noise amplifier connected to the radio frequency receiving channel, a receiving front-end module connected to the low noise amplifier, and The receiving front-end module is connected to the switch.
An antenna switching method for a wireless communication device, wherein the wireless communication device includes a first antenna and at least two second antennas, wherein the first antenna is a transmitting antenna, and the at least two second antennas are receiving antennas; The method includes the following steps:

Compare the performance of the first antenna with the second antenna with the best performance. If the performance of the first antenna is lower, switch the first antenna to a receiving antenna, and switch the second antenna with the best performance to a transmitting antenna. antenna.
The antenna switching method according to claim 10, further comprising: determining the second antenna with the best performance among the at least two second antennas according to the received signal strength of the at least two second antennas.
The antenna switching method according to claim 10 or 11, wherein the comparison between the first antenna and the second antenna with the best performance among the at least two second antennas is specifically:

According to the power of the second antenna with the best performance among the first antenna and the at least two second antennas, compare the second antenna with the best performance among the first antenna and the at least two second antennas.
The antenna switching method according to any one of claims 10-12, wherein the method further comprises:

The at least two second antennas are selected partial antennas among the antennas of the wireless communication device.
The antenna switching method according to claim 13, wherein the at least two second antennas are antennas with high priority in the wireless communication device.