Signal processing method and device

Abstract

The invention provides a signal processing method, and relates to the technical field of communication, the method is applied to terminal equipment, and the method comprises the following steps: receiving a first detection signal from network equipment; determining a receiving phase difference according to the first detection signal; acquiring a receiving internal phase difference and a transmitting internal phase difference; and determining a transmitting phase difference according to the receiving phase difference, the receiving internal phase difference and the transmitting internal phase difference. The method provided by the embodiment of the invention can be applied to the terminal equipment with multiple sets of receiving and transmitting hardware, the transmitting path is divided into two parts, namely the transmitting path and the path from the antenna to the network equipment, and the phase difference of the receiving path, the phase difference of the transmitting path and the total receiving phase difference are obtained. And the emission phase difference between different emission paths is accurately calculated. The transmitting phase difference is applied to the transmitting diversity technology, so that the uplink performance of the terminal equipment can be enhanced.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a signal processing method and device. Background Art

[0002] Terminal devices (such as mobile phones) can have two sets of transmission (transport, TX) hardware and reception (receive, RX) hardware built in. When the terminal device signal is weak, due to the limited power of the terminal device, the signal sent by the terminal device to the network device with a single set of TX hardware may be distorted. To solve this problem, the terminal device can send signals through transmit diversity. In other words, the terminal device can use two sets of TX hardware to send the same signal to the network device. In this way, the network device can superimpose the two received signals to obtain a stronger signal and avoid signal distortion. Therefore, transmit diversity can improve the uplink coverage of the terminal device and enhance the uplink performance.

[0003] The two sets of TX hardware correspond to two transmission paths respectively. There may be a phase difference between the two transmission paths, which leads to a phase difference between the signals received by the network device twice. Therefore, the superimposed signal may still be distorted. Moreover, when the two received signals happen to be in opposite phases, the signal strength after superposition is even worse, that is, negative gain occurs after superposition.

[0004] The related technical solutions cannot determine the phase difference between the two transmission paths, so the cyclic delay diversity (CDD) solution is used for periodic compensation. CDD can periodically change the phase difference between the signals sent by the two sets of TX hardware, and improve the signal strength after superposition. However, CDD cannot avoid the situation of reverse phase, and there is still negative benefit, and the improvement of uplink coverage is limited.

[0005] Therefore, how to determine the phase difference between different transmission paths in the terminal device is a problem that needs to be solved urgently. Summary of the invention

[0006] The present application provides a signal processing method that can accurately determine the phase difference between different transmission paths, which helps to improve uplink coverage and enhance uplink performance.

[0007] In a first aspect, a signal processing method is provided, which is applied to a terminal device, wherein the terminal device includes a first receive (receive, RX) path, a first transmit (transmit, TX) path, a first antenna, a second RX path, a second TX path, and a second antenna, wherein the first antenna is communicatively connected to the first RX path and the first TX path, and the second antenna is communicatively connected to the second RX path and the second TX path, and the method includes: receiving a first detection signal from a network device; determining an RX phase difference according to the first detection signal, wherein the RX phase difference includes a phase difference between the first signal and the second signal, and the first signal is the first detection signal received by the first RX path through the first antenna. signal, the second signal being the first detection signal received by the second RX path through the second antenna; obtaining an RX internal phase difference and a TX internal phase difference, wherein the RX internal phase difference includes the phase difference between the first RX path and the second RX path, and the TX internal phase difference includes the phase difference between the first TX path and the second TX path; determining a TX phase difference according to the RX phase difference, the RX internal phase difference and the TX internal phase difference, wherein the TX phase difference includes the phase difference between the first TX path and the second TX path, the first TX path includes the first TX path and the path from the first antenna to the network device, and the second TX path includes the second TX path and the path from the second antenna to the network device.

[0008] The method provided in the embodiment of the present application can be applied to a terminal device with multiple sets of transceiver hardware. The method splits the TX path into two parts: the TX path and the path from the antenna to the network device. By obtaining the phase difference of the RX path, the phase difference of the TX path, and the overall RX phase difference, the TX phase difference between different TX paths is accurately calculated. The TX phase difference is applied to the transmit diversity technology, which helps to enhance the uplink performance of the terminal device.

[0009] In combination with the first aspect, in certain implementations of the first aspect, obtaining the RX internal phase difference includes: sending a second detection signal to the first RX path, and sending a third detection signal to the second RX path, wherein a phase of the second detection signal is the same as a phase of the third detection signal; and determining the RX internal phase difference based on the second detection signal and the third detection signal.

[0010] In the embodiment of the present application, by sending detection signals with the same phase to different RX paths, the internal phase difference of the RX can be determined. This method does not require additional devices, is simple to calculate, and improves the applicability of the signal processing method.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the terminal device also includes a power splitter, wherein sending the second detection signal to the first RX path and sending the third detection signal to the second RX path includes: sending the fourth detection signal to the power splitter; processing the fourth detection signal by the power splitter to split it into the second detection signal and the third detection signal.

[0012] In the embodiment of the present application, a detection signal is divided into two paths by a power divider, thereby realizing detection of the RX path. The method can use only one port in a radio frequency integrated circuit (RFIC), avoid occupying multiple ports, and also avoid controlling multiple ports, which is conducive to reducing the failure rate and improving the reliability of the signal processing method.

[0013] In combination with the first aspect, in some implementations of the first aspect, the way in which the power splitter is connected to the first RX path is the same as the way in which the power splitter is connected to the second RX path.

[0014] In the embodiment of the present application, the power divider is connected to each RX path in the same manner, which reduces the phase difference caused by detection, and the obtained RX internal phase difference is more accurate, thereby improving the accuracy of the signal processing method.

[0015] In combination with the first aspect, in certain implementations of the first aspect, determining the RX internal phase difference based on the second detection signal and the third detection signal includes: determining the RX internal phase difference based on the third signal and a fourth signal, wherein the third signal is a signal obtained by coupling the second detection signal, and the fourth signal is a signal obtained by coupling the third detection signal.

[0016] In the embodiment of the present application, the detection of the RX path is realized by setting a coupler. The signal processing method provided in the embodiment of the present application can use general devices, has a simple structure, and is easy to implement.

[0017] In combination with the first aspect, in certain implementations of the first aspect, obtaining the TX internal phase difference includes: sending a fifth detection signal through the first TX path, and sending a sixth detection signal through the second TX path, wherein the fifth detection signal and the sixth detection signal have the same phase; determining the TX internal phase difference based on the fifth detection signal and the sixth detection signal.

[0018] In the embodiment of the present application, the detection signals with the same phase are sent through different TX paths, so that the internal phase difference of TX can be determined. This method does not require additional devices, is simple to calculate, and improves the applicability of the signal processing method.

[0019] In combination with the first aspect, in certain implementations of the first aspect, determining the TX internal phase difference based on the fifth detection signal and the sixth detection signal includes: determining the TX internal phase difference based on the fifth signal and the sixth signal, wherein the fifth signal is a signal obtained by coupling the fifth detection signal, and the sixth signal is a signal obtained by coupling the sixth detection signal.

[0020] In the embodiment of the present application, the detection of the TX path is realized by setting a coupler. The signal processing method provided in the embodiment of the present application can use general devices, has a simple structure, and is easy to implement.

[0021] In combination with the first aspect, in some implementations of the first aspect, the method is applied to a time division duplexing (TDD) communication system.

[0022] The signal processing method provided in the embodiment of the present application can be applied to TDD communication systems and is widely applicable. Since the TDD communication system has the characteristic of "transmitting and receiving reciprocity", the RX external phase difference is equal to the TX external phase difference, and the TX phase difference can be easily calculated.

[0023] In combination with the first aspect, in some implementations of the first aspect, the method further includes: sending a seventh signal and an eighth signal to the network device according to the TX phase difference.

[0024] The signal processing method provided in the embodiment of the present application can first accurately obtain the TX phase difference between multiple TX paths, and then send multiple signals to the network device according to the TX phase difference. When the network device is far away from the terminal device, the terminal device sends multiple signals, and the network device can superimpose these signals to improve the signal strength. Therefore, the signal processing method provided in the embodiment of the present application can improve the uplink coverage and enhance the uplink performance of the terminal device.

[0025] In combination with the first aspect, in certain implementations of the first aspect, sending a seventh signal and an eighth signal to the network device based on the TX phase difference includes: sending the seventh signal to the network device through the first TX path; sending the eighth signal to the network device through the second TX path, wherein the phase difference between the eighth signal and the seventh signal is the TX phase difference.

[0026] In the embodiment of the present application, by transmitting multiple signals whose phase difference is the TX phase difference, the transmission phase is completely coherent, and the signal power received by the network device is maximized. Therefore, the signal processing method provided in the embodiment of the present application can improve uplink coverage and enhance the uplink performance of the terminal device.

[0027] In a second aspect, an embodiment of the present application provides a signal processing device, which includes a module for implementing the first aspect or any possible implementation method of the first aspect.

[0028] In a third aspect, a terminal device is provided, including: a first RX path, a first TX path, a first antenna, a second RX path, a second TX path, and a second antenna, the first antenna being communicatively connected to the first RX path and the first TX path, and the second antenna being communicatively connected to the second RX path and the second TX path; and a signal processing device according to the second aspect or any possible implementation of the second aspect, the signal processing device being communicatively connected to the first RX path, the first TX path, the second RX path, and the second TX path.

[0029] In a fourth aspect, a computing device is provided, including a processor and a memory, wherein the processor is used to execute instructions stored in the memory so that the computing device performs the signal processing method of the first aspect or any possible implementation of the first aspect.

[0030] According to a fifth aspect, a computer program product comprising instructions is provided. When the instructions are executed by a computing device, the computing device executes the signal processing method according to the first aspect or any possible implementation of the first aspect.

[0031] In a sixth aspect, a computer-readable storage medium is provided, comprising computer program instructions. When the computer program instructions are executed by a computing device, the computing device executes the signal processing method of the first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic architecture diagram of a communication system provided in an embodiment of the present application.

[0033] Figure 2 It is a schematic block diagram of a radio frequency system provided in an embodiment of the present application.

[0034] Figure 3 It is a schematic flowchart of a signal processing method provided in an embodiment of the present application.

[0035] Figure 4 It is a schematic block diagram of another radio frequency system provided in an embodiment of the present application.

[0036] Figure 5 It is a schematic block diagram of another radio frequency system provided in an embodiment of the present application.

[0037] Figure 6 It is a schematic block diagram of a signal processing device provided in an embodiment of the present application.

[0038] Figure 7 It is a schematic block diagram of a computing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0040] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0041] In addition, in the embodiments of the present application, words such as "exemplary" and "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0042] The business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0043] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0044] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5G) system or new radio (NR), etc. The technical solution of the embodiments of the present application can also be applied to vehicle-to-x (V2X), where V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), long-term evolution of vehicle communication (LTE-V), Internet of Vehicles, machine type communication (MTC), Internet of Things (IoT), long-term evolution of machine communication (LTE-M), machine to machine (M2M), etc.

[0045] Figure 1 is a schematic architecture diagram of a communication system provided in an embodiment of the present application. Figure 1 As shown, the communication system may include a network device 110 and a terminal device 120 .

[0046] The terminal device 120 in the embodiment of the present application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device 120 in the embodiment of the present application can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a public land mobile communication network (PLMN) to be evolved in the future, etc. The embodiments of the present application are not limited to this. For example, the terminal device 120 may also be a terminal device in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0047] The network device 110 in the embodiment of the present application can be a device for communicating with the terminal device 120. The network device 110 can be a base station (base transceiver station, BTS) in the global system of mobile communication (GSM) system or code division multiple access (CDMA), or a base station (nodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device 110 can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

[0048] With the development of communication technology, terminal devices (such as mobile phones) usually have two sets of transmission (transport, TX) hardware and reception (receive, RX) hardware built in. The TX hardware here may include a TX path and an antenna, wherein the TX path refers to the part other than the antenna, and the TX path may include amplifiers, filters, RF switches and other devices. Correspondingly, the RX hardware may include an RX path and an antenna, wherein the RX path also refers to the part other than the antenna, and the RX path may also include amplifiers, filters, RF switches and other devices. In some embodiments, a set of TX hardware and RX hardware may share one or a group of antennas.

[0049] The built-in two sets of TX hardware and RX hardware have at least the following two functions.

[0050] On the one hand, when the signal of the terminal device is strong, the terminal device can rely on a single set of TX hardware to send signals to the network device. In this way, the two sets of TX hardware can send different signals to different network devices, or send different signals to the same network device, thereby enhancing the throughput of the terminal device.

[0051] On the other hand, when the signal of the terminal device is weak, due to the limited power of the terminal device, the signal strength sent by the terminal device to the network device with a single set of TX hardware may be small. To solve this problem, the terminal device can send signals through transmit diversity. In other words, the terminal device can use two sets of TX hardware to send the same signal to the network device. In this way, the network device can superimpose the two received signals to obtain a stronger signal and avoid signal distortion, thereby improving the uplink coverage of the terminal device and enhancing the uplink performance.

[0052] However, the two sets of TX hardware correspond to two TX paths respectively, and there may be a phase difference between the two TX paths, resulting in a phase difference between the signals received twice by the network device, so the superimposed signal may still be distorted. Moreover, when the two received signals happen to be in opposite phases, the signal strength after superposition is even worse, that is, negative gain occurs after superposition.

[0053] The related technical solutions cannot determine the phase difference between the two TX paths, so the cyclic delay diversity (CDD) solution is used for periodic compensation. CDD can periodically change the phase difference between the signals sent by the two sets of TX hardware, and improve the signal strength after superposition. However, CDD cannot avoid the situation of reverse phase, and there is still negative benefit, and the improvement of uplink coverage is limited.

[0054] Figure 2 1 is a schematic block diagram of a radio frequency system 200 provided in an embodiment of the present application. The radio frequency system 200 may be applied to a terminal device 120 , and the terminal device 120 may include the radio frequency system 200 .

[0055] The RF system 200 may include a first RX path 220, a first TX path 230, a first antenna 260, a second RX path 240, a second TX path 250 and a second antenna 270. The first antenna 260 is communicatively connected to the first RX path 220 and the first TX path 230, and the second antenna 270 is communicatively connected to the second RX path 240 and the second TX path 250.

[0056] In some embodiments, the first antenna 260 is a main antenna and the second antenna 270 is a diversity (DIV) antenna.

[0057] The radio frequency system 200 may further include a radio frequency integrated circuit (RFIC) 210, and the RFIC 210 may be connected to the first RX path 220, the first TX path 230, the second RX path 240, and the second TX path 250. The RFIC 210 may include a demodulator and a modulator. The demodulator may be used to demodulate the radio frequency signal received by the first RX path 220 and the second RX path 240 into a baseband signal. The modulator may be used to modulate the baseband signal into a radio frequency signal, which is sent through the first TX path 230 and the second TX path 250.

[0058] The first TX path 230 or the second TX path 250 may include devices such as a power amplifier (PA), a radio frequency switch, and a filter. The power amplifier may amplify the radio frequency signal output by the RFIC 210. The filter may filter the radio frequency signal output by the RFIC 210. The filter may be a surface acoustic wave (SAW) filter, a bulk acoustic wave (BAW) filter, etc., and the present application does not limit the specific type of the filter. The radio frequency switch may switch the path, for example, the first antenna 260 may be connected to the first RX path 220, and the first antenna 260 may be switched to be connected to the first TX path 230 to realize the switching from the received signal to the transmitted signal.

[0059] The first RX path 220 or the second RX path 240 may include a filter, a low noise amplifier (LNA), a radio frequency switch, etc. The meanings of the filter and the radio frequency switch can be found in the above text and will not be repeated here. LNA is an amplifier with a low noise coefficient and can amplify the radio frequency signal received by the antenna.

[0060] It should be noted that, in the above description, two sets of TX hardware and RX hardware are used as an example, but it is clear to those skilled in the art that there may be more sets of TX hardware and RX hardware.

[0061] Figure 3 is a schematic flow chart of a signal processing method 300 provided in an embodiment of the present application. Figure 3 The method 300 can accurately determine the phase difference between different TX paths, which helps to improve uplink coverage and enhance uplink performance.

[0062] The method 300 may be executed by any device having computing capability, for example, a signal processing device including some functional modules. The method 300 may be applied to a terminal device 120. The terminal device 120 may include a radio frequency system 200.

[0063] It can be understood that the method 300 can be applied to a radio frequency system having two sets of TX hardware and RX hardware, and can also be applied to a radio frequency system including more sets of TX hardware and RX hardware.

[0064] S310 , receiving a first detection signal from the network device 110 .

[0065] The first detection signal is any signal sent by the network device 110. The first detection signal may be a control signal or a data signal, and the present application does not limit the type of the first detection signal. The first detection signal may be sent by the terminal device 120 at the request of the network device 110, or may be received by the terminal device 120 when the network device 110 broadcasts. In other words, the present application does not limit the first detection signal to be sent by the network device 110 specifically to the terminal device 120.

[0066] S320, determining an RX phase difference based on the first detection signal, wherein the RX phase difference includes a phase difference between a first signal and a second signal, the first signal being the first detection signal received by the first RX channel 220 through the first antenna 260, and the second signal being the first detection signal received by the second RX channel 240 through the second antenna 270.

[0067] The terminal device includes two sets of RX hardware, so the same detection signal can be received by the two sets of RX hardware respectively.

[0068] The first detection signal has a certain phase when it is sent by the network device 110. However, since the receiving path from the network device 110 to the first antenna 260 is different from the receiving path from the network device 110 to the second antenna 270, when the first detection signal reaches the first antenna 260 and the second antenna 270 respectively through the two receiving paths, there is a phase difference (hereinafter referred to as the RX external phase difference) between the signal at the first antenna 260 and the signal at the second antenna 270. Further, since the first RX path 220 and the second RX path 240 are often different, the first detection signal also has a phase difference (hereinafter referred to as the RX internal phase difference) after passing through the first RX path 220 and the second RX path 240 respectively.

[0069] The RX phase difference is the phase difference between the first signal and the second signal, and the RX phase difference may include the superposition of the RX external phase difference and the RX internal phase difference. It can be understood that the RX external phase difference and the RX internal phase difference usually do not cancel each other out, so the RX phase difference is often not zero.

[0070] S330 , obtaining an RX internal phase difference and a TX internal phase difference, wherein the RX internal phase difference includes a phase difference between the first RX path 220 and the second RX path 240 , and the TX internal phase difference includes a phase difference between the first TX path 230 and the second TX path 250 .

[0071] Since the first TX path 230 and the second TX path 250 are often different, there is a phase difference between the RF signal when it reaches the first antenna 260 through the first TX path 230 and the signal when it reaches the second antenna 270 through the second TX path 250. This phase difference is called the TX internal phase difference.

[0072] An embodiment of obtaining the internal phase difference of RX is described below with reference to the accompanying drawings.

[0073] In some embodiments, obtaining the RX internal phase difference includes: sending a second detection signal to the first RX path 220, and sending a third detection signal to the second RX path 240, wherein the phase of the second detection signal is the same as the phase of the third detection signal; and determining the RX internal phase difference based on the second detection signal and the third detection signal.

[0074] It is understood that the RX internal phase difference may be obtained in other ways, and the present application does not limit the way to obtain the RX internal phase difference. For example, a detection signal with a preset phase difference may be transmitted to the first RX path 220 and the second RX path 240. For another example, the RX internal phase difference may be obtained by theoretical estimation.

[0075] After the second detection signal passes through the first RX path 220 and the third detection signal passes through the second RX path 240, there will be a certain phase difference due to the difference between the first RX path 220 and the second RX path 240. The RFIC can demodulate the second detection signal and the third detection signal to determine the RX internal phase difference.

[0076] For example, one or more ports for transmitting detection signals may be provided on the RFIC, and the detection signals may be transmitted through the ports. A coupler may be provided at the front end of the first RX path 220, and the coupler may be used to couple the transmitted detection signals to the first RX path 220 to form a loop. Correspondingly, a coupler may also be provided at the front end of the second RX path 240.

[0077] In the embodiment of the present application, by sending detection signals with the same phase to different RX paths, the internal phase difference of the RX can be determined. This method does not require additional devices, is simple to calculate, and improves the applicability of the signal processing method.

[0078] Figure 4 It is a schematic block diagram of another radio frequency system 200 provided in an embodiment of the present application.

[0079] See also Figure 4 In some embodiments, the terminal device further includes a power splitter 280, wherein sending the second detection signal to the first RX path 220 and sending the third detection signal to the second RX path 240 includes: sending the fourth detection signal to the power splitter 280; processing the fourth detection signal through the power splitter 280 to split it into the second detection signal and the third detection signal.

[0080] It is understood that the detection signals may be sent to different RX paths in other ways. For example, two interfaces may be provided on the RFIC, and the detection signals may be sent to the first RX path 220 and the second RX path 240 respectively by the two interfaces. That is, the second detection signal may be sent to the first RX path 220 by one interface, and the third detection signal may be sent to the second RX path 240 by the other interface.

[0081] A power divider is also called a power divider, which can divide one signal into multiple signals. The embodiment of the present application does not limit the specific form of the power divider 280, for example, the power divider 280 can be an equal power divider or an unequal power divider.

[0082] In some embodiments, the second detection signal and the third detection signal have the same phase. In other embodiments, the phase difference between the second detection signal and the third detection signal is a preset phase difference.

[0083] In the embodiment of the present application, a detection signal is divided into two paths by a power divider, thereby realizing detection of the RX path. This method can use only one port in the RFIC, avoid occupying multiple ports, and also avoid the control of multiple ports, which is conducive to reducing the failure rate and improving the reliability of the signal processing method.

[0084] See also Figure 4 In some embodiments, the power splitter 280 is connected to the first RX path 220 in the same manner as the power splitter 280 is connected to the second RX path 240 .

[0085] The connection mode may include routing, device model and quantity, etc. The same connection mode may also be understood as when two signals reach the first RX path 220 and the second RX path 240 respectively, the phase difference of the two signals does not change relative to the phase difference when starting from the power divider 280 .

[0086] In the embodiment of the present application, the power divider is connected to each RX path in the same manner, which reduces the phase difference caused by detection, and the obtained RX internal phase difference is more accurate, thereby improving the accuracy of the signal processing method.

[0087] Further, determining the RX internal phase difference based on the second detection signal and the third detection signal may include: determining the RX internal phase difference based on the third signal and a fourth signal, wherein the third signal is a signal obtained by coupling the second detection signal, and the fourth signal is a signal obtained by coupling the third detection signal.

[0088] For example, a coupler may be provided at the front end of the first RX path 220, and the coupler is used to couple the transmitted detection signal to the first RX path 220. In other words, the second detection signal may be coupled to obtain the third signal. Accordingly, a coupler may also be provided at the front end of the second RX path 240, and the third detection signal may be coupled to obtain the fourth signal.

[0089] In some embodiments, the coupler model at the front end of the first RX path 220 is the same as the coupler model at the front end of the second RX path 240. Furthermore, other parameters of the couplers may also be the same.

[0090] In the embodiment of the present application, the detection of the RX path is realized by setting a coupler. The signal processing method provided in the embodiment of the present application can use general devices, has a simple structure, and is easy to implement.

[0091] The above describes an embodiment of obtaining the internal phase difference of RX. The following describes an embodiment of obtaining the internal phase difference of TX.

[0092] In some embodiments, obtaining the TX internal phase difference includes: sending a fifth detection signal through the first TX path 230, and sending a sixth detection signal through the second TX path 250, wherein the fifth detection signal and the sixth detection signal have the same phase; determining the TX internal phase difference based on the fifth detection signal and the sixth detection signal.

[0093] It is understood that the TX internal phase difference can also be obtained in other ways, and the present application does not limit the way to obtain the TX internal phase difference. For example, a detection signal with a preset phase difference can also be transmitted to the first TX path 230 and the second TX path 250. For another example, the TX internal phase difference can be obtained by theoretical estimation.

[0094] After the fifth detection signal passes through the first TX path 230 and the sixth detection signal passes through the second TX path 250, there will be a certain phase difference due to the difference between the first TX path 230 and the second TX path 250. The RFIC can demodulate the fifth detection signal and the sixth detection signal to determine the TX internal phase difference.

[0095] For example, a coupler may be provided at the front end of the first TX path 230 , and the coupler is used to couple the transmitted detection signal to form a signal loop. Correspondingly, a coupler may also be provided at the front end of the second TX path 250 .

[0096] Figure 5 It is a schematic block diagram of another radio frequency system 200 provided in an embodiment of the present application.

[0097] See also Figure 5 The radio frequency system 200 may further include a multi-receive (MRX) path 290. The MRX path may receive a signal coupled between the fifth detection signal and the sixth detection signal, and may obtain a TX internal phase difference by demodulating the received signal.

[0098] In the embodiment of the present application, the detection signals with the same phase are sent through different TX paths, so that the internal phase difference of TX can be determined. This method does not require additional devices, is simple to calculate, and improves the applicability of the signal processing method.

[0099] Further, determining the TX internal phase difference based on the fifth detection signal and the sixth detection signal may include: determining the TX internal phase difference based on the fifth signal and the sixth signal, wherein the fifth signal is a signal obtained by coupling the fifth detection signal, and the sixth signal is a signal obtained by coupling the sixth detection signal.

[0100] For example, see Figure 5 , the MRX path can receive the fifth signal and the sixth signal to determine the TX internal phase difference.

[0101] In the embodiment of the present application, the detection of the TX path is realized by setting a coupler. The signal processing method provided in the embodiment of the present application can use general devices, has a simple structure, and is easy to implement.

[0102] S340, determining a TX phase difference according to the RX phase difference, the RX internal phase difference, and the TX internal phase difference, wherein the TX phase difference includes a phase difference between a first TX path and a second TX path, the first TX path includes the first TX path and a path from the first antenna to the network device, and the second TX path includes the second TX path and a path from the second antenna to the network device.

[0103] The TX phase difference includes the superposition of the TX internal phase difference and the TX external phase difference. The TX internal phase difference has been determined in the foregoing embodiment, so as long as the TX external phase difference is obtained, the TX phase difference can be determined.

[0104] It should be noted that the present application does not limit the order of obtaining the RX phase difference, the RX internal phase difference, and the TX internal phase difference. For example, the RX internal phase difference and the TX internal phase difference may be obtained first, and then the RX phase difference may be obtained, that is, S330 is executed first, and then S310 and S320 are executed.

[0105] Acquiring the RX internal phase difference and the TX internal phase difference in S330 may be completed in one step or in multiple steps. For example, the RX internal phase difference and the TX internal phase difference may be acquired simultaneously. For another example, the RX internal phase difference and the TX internal phase difference may not be acquired simultaneously, and the present application does not limit the order of acquiring the RX internal phase difference and the TX internal phase difference.

[0106] For the solution in S340, the embodiment of the present application can be completed in one step or in multiple steps. For example, the RX phase difference, the RX internal phase difference and the TX internal phase difference can be obtained first, and the TX phase difference can be calculated in one step. For another example, the RX phase difference and the RX internal phase difference can be obtained first, the RX external phase difference can be calculated, and then the TX internal phase difference can be obtained, and the TX phase difference can be calculated based on the RX external phase difference and the TX internal phase difference.

[0107] Those skilled in the art can understand that there are many combinations for obtaining the RX phase difference, the RX internal phase difference and the TX internal phase difference, and determining the TX phase difference based on the RX phase difference, the RX internal phase difference and the TX internal phase difference, and these combinations are within the scope of the present application.

[0108] For different communication systems, the specific method of determining the TX external phase difference may be different.

[0109] In some embodiments, for a communication system with a "transmit-receive reciprocity" characteristic, since the phase difference between the path from the antenna to the network device and the path from the network device to the antenna is the same, that is, the TX external phase difference is equal to the RX external phase difference. For example, the TX phase difference can be determined by the following formula.

[0110] TX phase difference = RX phase difference - RX internal phase difference - TX internal phase difference

[0111] The parameters of the above formulas can be found in the previous text and will not be repeated here. In addition, the TX phase difference can also be expressed as Delta_TX_Phase, the RX phase difference can also be expressed as Delta_RX_Phase, the RX internal phase difference can also be expressed as Delta_RX_Phase1, and the TX internal phase difference can also be expressed as Delta_TX_Phase1.

[0112] In other embodiments, for a communication system with a non-strict "receive / transmit reciprocity" characteristic, since the path from the antenna to the network device is similar to the path from the network device to the antenna, it can be approximately considered that the TX external phase difference is equal to the RX external phase difference, or the RX external phase difference is corrected and the corrected RX external phase difference is considered to be equal to the TX external phase difference.

[0113] The method provided in the embodiment of the present application can be applied to a terminal device with multiple sets of transceiver hardware. The method splits the TX path into two parts: the TX path and the path from the antenna to the network device. By obtaining the phase difference of the RX path, the phase difference of the TX path, and the overall RX phase difference, the TX phase difference between different TX paths is accurately calculated. The TX phase difference is applied to the transmit diversity technology, which helps to enhance the uplink performance of the terminal device.

[0114] In some embodiments, the method 300 is applied to a time division duplexing (TDD) communication system.

[0115] The TDD communication system uses the same frequency, that is, the same channel, when sending and receiving signals. The uplink data and downlink data are sent at different times to avoid interference between the uplink and downlink. The TDD communication system has channel reciprocity, also known as "transmitting and receiving reciprocity".

[0116] The propagation loss of the same channel is the same. Therefore, in a communication system with the "reciprocal transmission and reception" characteristic, such as a TDD communication system, the phase distortion of the uplink channel can be inferred from the phase distortion of the downlink channel. For example, the phase difference of the "receiving path" from the network device to the antenna can be used to determine the phase difference of the "transmitting path" from the antenna to the network device.

[0117] The signal processing method provided in the embodiment of the present application can be applied to TDD communication systems and is widely applicable. Since the TDD communication system has the characteristic of "transmitting and receiving reciprocity", the RX external phase difference is equal to the TX external phase difference, and the TX phase difference can be easily calculated.

[0118] In some embodiments, the method 200 further includes: sending a seventh signal and an eighth signal to the network device according to the TX phase difference.

[0119] The seventh signal and the eighth signal may be phase coherent. For example, the phase difference between the seventh signal and the eighth signal may be close to the TX phase difference. For another example, the phase difference between the seventh signal and the eighth signal has a fixed preset difference with the TX phase difference. Thus, the terminal device may control the signal strength received by the network device according to the TX phase difference.

[0120] The signal processing method provided in the embodiment of the present application can first accurately obtain the TX phase difference between multiple TX paths, and then send multiple signals to the network device according to the TX phase difference. When the network device is far away from the terminal device, the terminal device sends multiple signals, and the network device can superimpose these signals to improve the signal strength. Therefore, the signal processing method provided in the embodiment of the present application can improve the uplink coverage and enhance the uplink performance of the terminal device.

[0121] Further, sending the seventh signal and the eighth signal to the network device according to the TX phase difference may include: sending the seventh signal to the network device through the first transmission path; sending the eighth signal to the network device through the second transmission path, wherein the phase difference between the eighth signal and the seventh signal is the TX phase difference.

[0122] When the phase difference between the eighth signal and the seventh signal is the TX phase difference, the eighth signal and the seventh signal are completely coherent. When the network device receives the eighth signal and the seventh signal, the eighth signal and the seventh signal are in phase, that is, there is almost no phase difference. By superposition, the network device can obtain the strongest signal.

[0123] In the embodiment of the present application, by transmitting multiple signals whose phase difference is the TX phase difference, the transmission phase is completely coherent, and the signal power received by the network device is maximized. Therefore, the signal processing method provided in the embodiment of the present application can improve uplink coverage and enhance the uplink performance of the terminal device.

[0124] Combined with the above Figure 3 , Figure 4 and Figure 5 The method embodiments of the present application are described in detail. The device embodiments of the present application are described below. The device embodiments correspond to the method embodiments, so the parts not described in detail can refer to the previous method embodiments. The device can implement any possible implementation of the above method.

[0125] Figure 6 A schematic block diagram of a signal processing device 600 provided in an embodiment of the present application is shown.

[0126] Figure 6As shown, the signal processing device 600 includes: a transceiver module 610, which is used to receive a first detection signal from a network device; a processing module 620, which is used to determine an RX phase difference according to the first detection signal, wherein the RX phase difference includes a phase difference between a first signal and a second signal, the first signal is the first detection signal received by the first RX path through the first antenna, and the second signal is the first detection signal received by the second RX path through the second antenna; the processing module 620 is also used to obtain an RX internal phase difference and a TX internal phase difference, wherein the RX internal phase difference includes a phase difference between the first RX path and the second RX path, and the TX internal phase difference includes a phase difference between the first TX path and the second TX path; the processing module 620 is also used to determine a TX phase difference according to the RX phase difference, the RX internal phase difference and the TX internal phase difference, wherein the TX phase difference includes a phase difference between a first TX path and a second TX path, the first TX path includes the first TX path and a path from the first antenna to the network device, and the second TX path includes the second TX path and a path from the second antenna to the network device.

[0127] Both the transceiver module 610 and the processing module 620 may be implemented by software or by hardware. For example, the implementation of the transceiver module 610 is described below by taking the transceiver module 610 as an example. Similarly, the implementation of the processing module 620 may refer to the implementation of the transceiver module 610.

[0128] As an example of a software functional unit, the transceiver module 610 may include code running on a computing instance. The computing instance may include at least one of a physical host (computing device), a virtual machine, and a container. Furthermore, the computing instance may be one or more.

[0129] As an example of a hardware functional unit, the transceiver module 610 may include at least one computing device, such as a server, etc. Alternatively, the transceiver module 610 may also be a device implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD). The PLD may be a complex programmable logical device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.

[0130] The present application also provides a computing device 700. Figure 7 As shown, computing device 700 includes: bus 702, processor 704, memory 706 and communication interface 708. Processor 704, memory 706 and communication interface 708 communicate through bus 702. Computing device 700 can be a server or a terminal device. It should be understood that the present application does not limit the number of processors and memories in computing device 700.

[0131] The bus 702 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 The bus 702 may include a path for transmitting information between various components of the computing device 700 (eg, the memory 706, the processor 704, and the communication interface 708).

[0132] The processor 704 may include any one or more of a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (MP), or a digital signal processor (DSP).

[0133] The memory 706 may include a volatile memory, such as a random access memory (RAM). The memory 706 may also include a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid state drive (SSD).

[0134] The memory 706 stores executable program codes, and the processor 704 executes the executable program codes to respectively implement the functions of the aforementioned transceiver module 610 and the processing module 620, thereby implementing the signal processing method. That is, the memory 706 stores instructions for executing the signal processing method.

[0135] The communication interface 708 uses modules such as, but not limited to, a network interface card, a transceiver, etc. to implement communication between the computing device 700 and other devices or communication networks.

[0136] The embodiment of the present application also provides a terminal device 120, including: a first RX path 220, a first TX path 230, a first antenna 260, a second RX path 240, a second TX path 250 and a second antenna 270, the first antenna 260 is communicatively connected to the first RX path 220 and the first TX path 230, the second antenna 270 is communicatively connected to the second RX path 240 and the second TX path 250; and a signal processing device 600, the signal processing device 600 is communicatively connected to the first RX path 220, the first TX path 230, the second RX path 240 and the second TX path 250.

[0137] The present application does not limit the specific configuration of the signal processing device 600. For example, see Figure 2 The signal processing device 600 can be set on the RF chip 210 or outside the RF chip 220.

[0138] The embodiment of the present application also provides a computer program product including instructions. The computer program product may be software or a program product including instructions that can be run on a computing device or stored in any available medium. When the computer program product is run on at least one computing device, the at least one computing device executes the above-mentioned signal processing method.

[0139] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that can be stored by a computing device or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk). The computer-readable storage medium includes instructions that instruct the computing device to perform the above-mentioned signal processing method.

[0140] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0141] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0142] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0143] In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0144] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0145] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A signal processing method, characterized in that: The method is applied to a terminal device, the terminal device includes a first receiving path, a first transmitting path, a first antenna, a second receiving path, a second transmitting path, and a second antenna, the first antenna is communicatively connected with the first receiving path and the first transmitting path, the second antenna is communicatively connected with the second receiving path and the second transmitting path, and the method includes: receiving a first detection signal from a network device; Determine a receiving phase difference according to the first detection signal, wherein the receiving phase difference comprises a phase difference between a first signal and a second signal, the first signal is the first detection signal received by the first receiving path through the first antenna, and the second signal is the first detection signal received by the second receiving path through the second antenna; Acquire a receiving internal phase difference and a transmitting internal phase difference, wherein the receiving internal phase difference comprises a phase difference between the first receiving path and the second receiving path, and the transmitting internal phase difference comprises a phase difference between the first transmitting path and the second transmitting path; A transmit phase difference is determined according to the receive phase difference, the receive internal phase difference, and the transmit internal phase difference, wherein the transmit phase difference comprises a phase difference between a first transmit path and a second transmit path, the first transmit path comprises the first transmit path and a path from the first antenna to the network device, and the second transmit path comprises the second transmit path and a path from the second antenna to the network device.

2. The method according to claim 1, characterized in that The step of obtaining the internal phase difference of the receiver comprises: Sending a second detection signal to the first receiving path, and sending a third detection signal to the second receiving path, wherein a phase of the second detection signal is the same as a phase of the third detection signal; The receiving internal phase difference is determined according to the second detection signal and the third detection signal.

3. The method according to claim 2, characterized in that The terminal device further includes a power splitter, wherein the sending of the second detection signal to the first receiving path and the sending of the third detection signal to the second receiving path include: Sending the fourth detection signal to the power divider; The fourth detection signal is processed by the power divider to be divided into the second detection signal and the third detection signal.

4. The method according to claim 3, characterized in that The way in which the power divider is connected to the first receiving path is the same as the way in which the power divider is connected to the second receiving path.

5. The method according to any one of claims 2 to 4, characterized in that The step of determining the receiving internal phase difference according to the second detection signal and the third detection signal includes: The receiving internal phase difference is determined according to a third signal and a fourth signal, wherein the third signal is a signal obtained by coupling the second detection signal, and the fourth signal is a signal obtained by coupling the third detection signal.

6. The method according to any one of claims 1 to 5, characterized in that The step of obtaining the internal phase difference of the transmission includes: Sending a fifth detection signal through the first transmission path, and sending a sixth detection signal through the second transmission path, wherein the fifth detection signal and the sixth detection signal have the same phase; The transmit internal phase difference is determined according to the fifth detection signal and the sixth detection signal.

7. The method according to claim 6, characterized in that The step of determining the transmission internal phase difference according to the fifth detection signal and the sixth detection signal includes: The transmit internal phase difference is determined according to a fifth signal and a sixth signal, wherein the fifth signal is a signal obtained by coupling the fifth detection signal, and the sixth signal is a signal obtained by coupling the sixth detection signal.

8. The method according to any one of claims 1 to 7, characterized in that The method is applied to a time division duplex (TDD) communication system.

9. The method according to any one of claims 1 to 8, characterized in that Also includes: According to the transmission phase difference, a seventh signal and an eighth signal are sent to the network device.

10. The method according to claim 9, characterized in that The sending the seventh signal and the eighth signal to the network device according to the transmission phase difference includes: Sending the seventh signal to the network device through the first transmission path; The eighth signal is sent to the network device through the second transmission path, wherein a phase difference between the eighth signal and the seventh signal is the transmission phase difference.

11. A signal processing device, characterized in that: The device is applied to a terminal device, the terminal device includes a first receiving path, a first transmitting path, a first antenna, a second receiving path, a second transmitting path, and a second antenna, the first antenna is communicatively connected with the first receiving path and the first transmitting path, the second antenna is communicatively connected with the second receiving path and the second transmitting path, and the device includes: A transceiver module, used for receiving a first detection signal from a network device; a processing module, configured to determine a receiving phase difference according to the first detection signal, wherein the receiving phase difference comprises a phase difference between a first signal and a second signal, the first signal being the first detection signal received by the first receiving path through the first antenna, and the second signal being the first detection signal received by the second receiving path through the second antenna; The processing module is further used to obtain a receiving internal phase difference and a transmitting internal phase difference, wherein the receiving internal phase difference includes a phase difference between the first receiving path and the second receiving path, and the transmitting internal phase difference includes a phase difference between the first transmitting path and the second transmitting path; The processing module is also used to determine a transmitting phase difference based on the receiving phase difference, the receiving internal phase difference and the transmitting internal phase difference, wherein the transmitting phase difference includes a phase difference between a first transmitting path and a second transmitting path, the first transmitting path includes the first transmitting path and a path from the first antenna to the network device, and the second transmitting path includes the second transmitting path and a path from the second antenna to the network device.

12. The device according to claim 11, characterized in that The transceiver module is further used to send a second detection signal to the first receiving path, and send a third detection signal to the second receiving path, wherein the phase of the second detection signal is the same as the phase of the third detection signal; The processing module is specifically configured to determine the receiving internal phase difference according to the second detection signal and the third detection signal.

13. The device according to claim 12, characterized in that The terminal device also includes a power divider; wherein, The transceiver module is further used to send the fourth detection signal to the power divider; The processing module is specifically configured to process the fourth detection signal through the power divider to divide the fourth detection signal into the second detection signal and the third detection signal.

14. The device according to claim 13, characterized in that The way in which the power divider is connected to the first receiving path is the same as the way in which the power divider is connected to the second receiving path.

15. The device according to any one of claims 12 to 14, characterized in that The processing module is specifically used to determine the receiving internal phase difference according to a third signal and a fourth signal, wherein the third signal is a signal obtained by coupling the second detection signal, and the fourth signal is a signal obtained by coupling the third detection signal.

16. The device according to any one of claims 11 to 15, characterized in that The transceiver module is further used to send a fifth detection signal through the first transmission path, and send a sixth detection signal through the second transmission path, wherein the fifth detection signal and the sixth detection signal have the same phase; The processing module is specifically configured to determine the transmit internal phase difference according to the fifth detection signal and the sixth detection signal.

17. The device according to claim 16, characterized in that The processing module is specifically used to determine the transmit internal phase difference according to a fifth signal and a sixth signal, wherein the fifth signal is a signal obtained by coupling the fifth detection signal, and the sixth signal is a signal obtained by coupling the sixth detection signal.

18. The device according to any one of claims 11 to 17, characterized in that The device is applied to a time division duplex TDD communication system.

19. The device according to any one of claims 11 to 18, characterized in that The transceiver module is further used to send a seventh signal and an eighth signal to the network device according to the transmission phase difference.

20. The device according to claim 19, characterized in that The sending module is specifically configured to send the seventh signal to the network device through the first transmission path; The eighth signal is sent to the network device through the second transmission path, wherein a phase difference between the eighth signal and the seventh signal is the transmission phase difference.

21. A terminal device, characterized in that: include: a first receiving path, a first transmitting path, a first antenna, a second receiving path, a second transmitting path, and a second antenna, wherein the first antenna is communicatively connected with the first receiving path and the first transmitting path, and the second antenna is communicatively connected with the second receiving path and the second transmitting path; as well as The signal processing device according to any one of claims 11 to 20, wherein the signal processing device is communicatively connected to the first receiving path, the first transmitting path, the second receiving path, and the second transmitting path.

22. A computing device, comprising a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, so that the computing device performs the method according to any one of claims 1 to 10.

23. A computer program product comprising instructions, characterized in that When the instructions are executed by a computing device, the computing device is caused to perform the method according to any one of claims 1 to 10.

24. A computer-readable storage medium, characterized in that: The method comprises computer program instructions, and when the computer program instructions are executed by a computing device, the computing device performs the method as claimed in any one of claims 1 to 10.

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