Phase correction method and communication device

Abstract

The invention provides a phase correction method and a communication device. The device comprises a radio frequency module and a signal transmission module. The radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected with the signal transmission module, and the signal transmission module is further connected with at least one antenna interface; the radio frequency module is used for sending a first radio frequency signal through a plurality of radio frequency interfaces; the signal transmission module is used for transmitting a first radio frequency signal to the at least one antenna interface and transmitting the first radio frequency signal to the radio frequency module in a loopback manner at the at least one antenna interface; and the radio frequency module is also used for correcting the phases of the signals sent by the plurality of radio frequency interfaces based on the first radio frequency signal transmitted back in the loopback manner. According to the invention, phase correction can be carried out on each radio frequency interface of the radio frequency module under the condition that a correction interface is not arranged in the communication device, so that interface resources are saved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a phase correction method and a communication device. Background Art

[0002] In wireless communication technology, multiple RF units in the RF module are connected to multiple antenna units in the array antenna, and the RF signal generated by each RF unit can be transmitted to the antenna unit through the corresponding RF channel. However, due to individual differences between different RF units, there is a phase difference between the RF signals generated by different RF units. At the same time, due to individual differences between different RF channels, the RF signal will generate a phase difference after being transmitted through different RF channels, which will cause a phase difference between the RF signals received by multiple antenna units.

[0003] In the prior art, the array antenna returns the received multiple RF signals to the RF module through an additional correction interface, and the RF module then corrects the phase difference of the multiple RF signals, thereby making the phases of the multiple RF signals transmitted by the RF module to the array antenna through the RF channel consistent. It can be seen that in order to achieve phase correction, the RF module and the array antenna need to be provided with an additional correction interface. Therefore, how to achieve phase correction of multiple RF signals when the RF module or the array antenna is not provided with a correction interface is a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The present application provides a phase correction method and a communication device, which can perform phase correction on each radio frequency interface of a radio frequency module when no correction interface is provided in the communication device, thereby saving interface resources.

[0005] In a first aspect, an embodiment of the present application provides a communication device, the device comprising a radio frequency module and a signal transmission module; the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to the signal transmission module, and the signal transmission module is further connected to at least one antenna interface;

[0006] The aforementioned radio frequency module is used to send the first radio frequency signal through the aforementioned multiple radio frequency interfaces;

[0007] The signal transmission module is used to transmit the first radio frequency signal to the at least one antenna interface, and loop back the first radio frequency signal to the radio frequency module at the at least one antenna interface;

[0008] The radio frequency module is also used to correct the phases of the signals sent by the plurality of radio frequency interfaces based on the first radio frequency signal transmitted back through the loopback.

[0009] In this solution, the RF module is connected to the antenna interface through the signal transmission module, and sends a first RF signal to the signal transmission module through multiple RF interfaces. The signal transmission module can send the above-mentioned first RF signal to the antenna interface, and loop back the first RF signal to the RF module at the antenna interface, so that the RF module can correct the phase of the signals sent by the above-mentioned multiple RF interfaces according to the first RF signal looped back. It can be understood that the RF module can send RF signals through each RF interface, and then the signal transmission module can loop back the RF signal sent by each RF interface to the RF module, so that the RF module performs phase correction on each RF interface that sends the RF signal. Therefore, in this solution, the communication device can correct the phase of the signal sent by each RF interface of the RF module without setting an additional correction interface, which can save interface resources and has high applicability.

[0010] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface;

[0011] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0012] In this solution, each first transmission interface of the signal transmission module is interconnected with each second transmission interface, and the signal transmission module can transmit the first RF signal sent by multiple RF interfaces to multiple interconnected second transmission interfaces through multiple first transmission interfaces to send the first RF signal to the above-mentioned at least one antenna interface. In addition, the signal transmission module can also transmit the first RF signal looped back at the antenna interface to multiple interconnected first transmission interfaces through the second transmission interface to complete the loopback transmission of the first RF signal.

[0013] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned multiple second bridges; wherein n1×n2 is equal to n.

[0014] In this solution, the signal transmission module can make the first transmission interface of each first bridge interoperate with the second transmission interface of each second bridge by connecting n1 first bridges with n1 second bridges. It can be understood that the structure of the first bridge and the second bridge in this solution is simple and easy to implement, and the number of the first bridge and the second bridge can be adjusted according to the actual application scenario, which is highly flexible.

[0015] In a possible implementation, the signal transmission module further includes a first switch, wherein the first switch is arranged between the first antenna interface and the second transmission interface correspondingly connected to the first antenna interface; the first antenna interface is any one of the at least one antenna interface;

[0016] The looping back transmission of the first radio frequency signal to the radio frequency module at the at least one antenna interface includes:

[0017] At the first antenna interface, the first radio frequency signal is looped back and transmitted to the radio frequency module through the turned-off first switch.

[0018] In this solution, the signal transmission module can reflect the first RF signal transmitted by the second transmission interface to the first antenna interface back to the second transmission interface by turning off the first switch, so that the signal transmission module can transmit the first RF signal reflected by the first switch back to the RF module, and then realize the loopback transmission of the above-mentioned first RF signal. It can be understood that the structure of the first switch in this solution is simple and easy to control.

[0019] In a possible implementation, the radio frequency module is used to control the first switch to be turned off;

[0020] The RF module is used to send a first RF signal through the plurality of RF interfaces, including: when a first RF interface among the plurality of RF interfaces is used to receive a signal, the RF module is used to send a second RF signal through a plurality of second RF interfaces; the first RF interface is any one of the plurality of RF interfaces, and the second RF interface is the remaining RF interfaces among the plurality of RF interfaces except the first RF interface;

[0021] The signal transmission module is specifically used to loop back and transmit the second radio frequency signal to the first radio frequency interface of the radio frequency module through the first switched-off switch at the first antenna interface.

[0022] In this solution, the RF module can send the second RF signal through multiple second RF interfaces, and receive the second RF signal looped back by the signal transmission module through the first RF interface, so as to correct the phase of the signal sent by the above multiple second RF interfaces according to the second RF signal looped back. It is understandable that before sending the second RF signal, the RF module can first control the first switch to turn off.

[0023] In a possible implementation, the RF module is used to send the first RF signal through the multiple RF interfaces, and further includes: the RF module is used to send the third RF signal through the first RF interface and the third RF interface; the third RF interface is any one of the multiple second RF interfaces;

[0024] The aforementioned signal transmission module is also specifically used to loop back the aforementioned third RF signal to the fourth RF interface of the aforementioned RF module at the aforementioned first antenna interface through the aforementioned turned-off first switch, and the aforementioned fourth RF interface is any one of the aforementioned multiple second RF interfaces except the aforementioned third RF interface.

[0025] In this scheme, after correcting the phases of the signals sent by the above-mentioned multiple second RF interfaces, the RF module can send a third RF signal through the above-mentioned first RF interface and the third RF interface, and receive the third RF signal looped back by the signal transmission module through the fourth RF interface, thereby correcting the phase of the signal sent by the above-mentioned first RF interface according to the third RF signal looped back, and further realizing the phase correction of each RF interface of the RF module.

[0026] In a possible implementation, the signal transmission module further includes a second switch and a third switch; the second switch is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface; the second antenna interface is any one of the at least one antenna interface; the third switch is arranged between the fifth radio frequency interface and the first transmission interface correspondingly connected to the fifth radio frequency interface; the fifth radio frequency interface is any one of the plurality of radio frequency interfaces;

[0027] The RF module is used to control the second switch and the third switch to be turned on, so that the first end of the second switch is connected to the first end of the first conductive path, and the first end of the third switch is connected to the second end of the first conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the third switch is also connected to the fifth RF interface;

[0028] The looping back transmission of the first radio frequency signal to the radio frequency module at the at least one antenna interface includes:

[0029] At the aforementioned second antenna interface, the fourth RF signal is looped back and transmitted to the aforementioned fifth RF interface through the aforementioned first conductive path; the aforementioned fourth RF signal is a RF signal sent by multiple sixth RF interfaces, and the aforementioned multiple sixth RF interfaces are the remaining RF interfaces among the aforementioned multiple RF interfaces except the aforementioned fifth RF interface.

[0030] In this solution, the signal transmission module can loop back the four RF signals sent by the multiple sixth RF interfaces to the fifth RF interface of the RF module by turning on the second switch and the third switch, so that the RF module can correct the phases of the signals sent by the multiple sixth RF interfaces according to the fourth RF signal looped back. It can be understood that the second switch and the third switch in this solution are simple in structure and easy to control.

[0031] In a possible implementation, the signal transmission module further includes a fourth switch, and the fourth switch is arranged between the seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface; the seventh RF interface is any one of the plurality of sixth RF interfaces;

[0032] The RF module is used to control the second switch and the fourth switch to be turned on, so that the first end of the second switch is connected to the first end of the second conductive path, and the first end of the fourth switch is connected to the second end of the second conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the fourth switch is also connected to the seventh RF interface;

[0033] The loopback transmission of the first radio frequency signal to the radio frequency module at the at least one antenna interface also includes:

[0034] At the aforementioned second antenna interface, the fifth RF signal is looped back and transmitted to the aforementioned seventh RF interface through the aforementioned second conductive path; the aforementioned fifth RF signal is the RF signal sent by the aforementioned fifth RF interface and the eighth RF interface, and the aforementioned eighth RF interface is any one of the aforementioned multiple RF interfaces except the aforementioned seventh RF interface.

[0035] In the present scheme, after correcting the phases of the signals sent by the above-mentioned multiple sixth RF interfaces, the RF module can send the fifth RF signal through the above-mentioned fifth RF interface and the seventh RF interface, and receive the fifth RF signal looped back by the signal transmission module through the fifth RF interface, thereby correcting the phase of the signal sent by the above-mentioned fifth RF interface according to the fifth RF signal looped back, and further realizing the phase correction of each RF interface of the RF module.

[0036] In a second aspect, the present application provides a communication device, the device comprising a radio frequency module, a signal transmission module and a signal transmission module; the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to the signal transmission module, the signal transmission module is further connected to a first antenna interface; the first antenna interface is further connected to the signal transmission module;

[0037] The aforementioned signal transmission module is used to send a radio frequency signal through the aforementioned first antenna interface;

[0038] The aforementioned signal transmission module is used to transmit the aforementioned radio frequency signal to the aforementioned radio frequency module through the aforementioned multiple radio frequency interfaces;

[0039] The radio frequency module is used to correct the phases of the signals received by the multiple radio frequency interfaces based on the radio frequency signals received by the multiple radio frequency interfaces.

[0040] In this solution, the signal transmission module is connected to the RF module through the signal transmission module, and sends the RF signal to the RF module through the signal transmission module. The signal transmission module can transmit the above RF signal to multiple RF interfaces of the RF module. The RF module can correct the phase of the signals received by the above multiple RF interfaces according to the RF signals received by the multiple RF interfaces. It can be understood that in this solution, the communication device can correct the phase of the signal received by each RF interface of the RF module without setting up an additional correction interface, which can save interface resources and has high applicability.

[0041] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the first antenna interface;

[0042] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0043] In this solution, each first transmission interface of the signal transmission module is interconnected with each second transmission interface, and the signal transmission module can transmit the RF signal sent by the signal transmission module to multiple RF interfaces, so that multiple RF interfaces of the RF module can receive the RF signal sent by the signal transmission unit.

[0044] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned multiple second bridges; wherein n1×n2 is equal to n.

[0045] In this solution, the signal transmission module can make the first transmission interface of each first bridge interoperate with the second transmission interface of each second bridge by connecting n1 first bridges with n1 second bridges. It can be understood that the structure of the first bridge and the second bridge in this solution is simple and easy to implement, and the number of the first bridge and the second bridge can be adjusted according to the actual application scenario, which is highly flexible.

[0046] In a third aspect, an embodiment of the present application provides a phase correction method, which is applied to a radio frequency module, wherein the radio frequency module includes multiple radio frequency interfaces, the multiple radio frequency interfaces are connected to a signal transmission module, and the signal transmission module is also connected to at least one antenna interface, and the method includes:

[0047] Sending a first radio frequency signal through the aforementioned multiple radio frequency interfaces;

[0048] receiving a first radio frequency signal looped back through the aforementioned signal transmission module; wherein the aforementioned first radio frequency signal is transmitted to the aforementioned at least one antenna interface through the aforementioned signal transmission module, and is looped back and transmitted to the aforementioned radio frequency module at the aforementioned at least one antenna interface;

[0049] Based on the first radio frequency signal looped back, the phases of the signals sent by the plurality of radio frequency interfaces are corrected.

[0050] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface;

[0051] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0052] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned n1 second bridges; wherein n1×n2 is equal to n.

[0053] In a possible implementation, the signal transmission module further includes a first switch, wherein the first switch is arranged between the first antenna interface and the second transmission interface correspondingly connected to the first antenna interface; the first antenna interface is any one of the at least one antenna interface;

[0054] The receiving of the first radio frequency signal looped back by the signal transmission module includes:

[0055] The first radio frequency signal is received by the signal transmission module at the first antenna interface and transmitted back through the first switch loopback that is turned off.

[0056] In a possible implementation, the RF module controls the first switch to be turned off, and the sending of the first RF signal through the plurality of RF interfaces includes:

[0057] When a first RF interface among the aforementioned multiple RF interfaces is used to receive a signal, the aforementioned RF module sends a second RF signal through multiple second RF interfaces; the aforementioned first RF interface is any one of the aforementioned multiple RF interfaces, and the aforementioned second RF interface is the remaining RF interfaces among the aforementioned multiple RF interfaces except the aforementioned first RF interface;

[0058] The second radio frequency signal transmitted back by the signal transmission module at the first antenna interface through the turned-off first switch loopback is received through the first radio frequency interface.

[0059] In a possible implementation, the sending of the first RF signal through the plurality of RF interfaces further includes: the RF module sending a third RF signal through the first RF interface and a third RF interface; the third RF interface is any one of the plurality of second RF interfaces;

[0060] The third RF signal transmitted back by the signal transmission module at the first antenna interface through the first switched-off loopback is received through the fourth RF interface of the RF module. The fourth RF interface is any one of the plurality of second RF interfaces except the third RF interface.

[0061] In a possible implementation, the signal transmission module further includes a second switch and a third switch; the second switch is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface; the second antenna interface is any one of the at least one antenna interface; the third switch is arranged between the fifth radio frequency interface and the first transmission interface correspondingly connected to the fifth radio frequency interface; the fifth radio frequency interface is any one of the plurality of radio frequency interfaces;

[0062] Controlling the second switch and the third switch to be turned on, so that the first end of the second switch is connected to the first end of the first conductive path, and the first end of the third switch is connected to the second end of the first conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the third switch is also connected to the fifth radio frequency interface;

[0063] The receiving of the first radio frequency signal looped back by the signal transmission module includes:

[0064] The fourth RF signal transmitted back by the signal transmission module at the second antenna interface through the first conductive path is received through the fifth RF interface; the fourth RF signal is a RF signal sent by multiple sixth RF interfaces, and the multiple sixth RF interfaces are the remaining RF interfaces among the multiple RF interfaces except the fifth RF interface.

[0065] In a possible implementation, the signal transmission module further includes a fourth switch, wherein the fourth switch is arranged between the seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface; the seventh RF interface is any one of the plurality of sixth RF interfaces;

[0066] Controlling the second switch and the fourth switch to be turned on, so that the first end of the second switch is connected to the first end of the second conductive path, and the first end of the fourth switch is connected to the second end of the second conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the fourth switch is also connected to the seventh radio frequency interface;

[0067] The receiving of the first radio frequency signal looped back by the signal transmission module includes:

[0068] The fifth RF signal is received by the aforementioned signal transmission module at the aforementioned second antenna interface through the aforementioned seventh RF interface, and is looped back and transmitted back through the aforementioned second switch that is turned on by the aforementioned fourth switch; the aforementioned fifth RF signal is the RF signal sent by the aforementioned fifth RF interface and the eighth RF interface, and the aforementioned eighth RF interface is any one of the aforementioned multiple RF interfaces except the aforementioned seventh RF interface.

[0069] In a fourth aspect, an embodiment of the present application further provides a phase correction method, which is applied to a radio frequency module, wherein the radio frequency module includes multiple radio frequency interfaces, the multiple radio frequency interfaces are connected to a signal transmission module, the signal transmission module is also connected to a first antenna interface, and the first antenna interface is also connected to a signal transmission module; the method includes:

[0070] Receiving the radio frequency signal transmitted by the aforementioned signal transmission module through the aforementioned multiple radio frequency interfaces; wherein the aforementioned radio frequency signal is sent by the aforementioned signal transmission module through the aforementioned first antenna interface, and is transmitted by the aforementioned signal transmission module to the aforementioned multiple radio frequency interfaces;

[0071] Based on the radio frequency signals received by the plurality of radio frequency interfaces, the phases of the signals received by the plurality of radio frequency interfaces are corrected.

[0072] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the first antenna interface;

[0073] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0074] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned multiple second bridges; wherein n1×n2 is equal to n.

[0075] In a fifth aspect, the present application provides a communication device, which includes a processor and a memory. The memory is coupled to the processor, and when the processor executes a computer program or computer instruction stored in the memory, the method described in any one of the third aspects above can be implemented. The communication device may also include a communication interface, which is used for the communication device to communicate with other devices. Exemplarily, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface.

[0076] In one possible implementation, the device may include:

[0077] Memory for storing computer programs or computer instructions;

[0078] Processor for:

[0079] Sending a first radio frequency signal through the aforementioned multiple radio frequency interfaces;

[0080] receiving a first radio frequency signal looped back through the aforementioned signal transmission module; wherein the aforementioned first radio frequency signal is transmitted to the aforementioned at least one antenna interface through the aforementioned signal transmission module, and is looped back and transmitted to the aforementioned radio frequency module at the aforementioned at least one antenna interface;

[0081] Based on the first radio frequency signal looped back, the phases of the signals sent by the plurality of radio frequency interfaces are corrected.

[0082] It should be noted that the computer program or computer instruction in the memory in the present application can be stored in advance or downloaded from the Internet and stored when the device is used. The present application does not specifically limit the source of the computer program or computer instruction in the memory. The coupling in the embodiments of the present application is an indirect coupling or 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.

[0083] In a sixth aspect, the present application provides a communication device, which includes a processor and a memory. The memory is coupled to the processor, and when the processor executes a computer program or computer instruction stored in the memory, the method described in any one of the fourth aspects above can be implemented. The communication device may also include a communication interface, which is used for the communication device to communicate with other devices. Exemplarily, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface.

[0084] In one possible implementation, the device may include:

[0085] Memory for storing computer programs or computer instructions;

[0086] Processor for:

[0087] Receiving the radio frequency signal transmitted by the aforementioned signal transmission module through the aforementioned multiple radio frequency interfaces; wherein the aforementioned radio frequency signal is sent by the aforementioned signal transmission module through the aforementioned first antenna interface, and is transmitted by the aforementioned signal transmission module to the aforementioned multiple radio frequency interfaces;

[0088] Based on the radio frequency signals received by the plurality of radio frequency interfaces, the phases of the signals received by the plurality of radio frequency interfaces are corrected.

[0089] It should be noted that the computer program or computer instruction in the memory in the present application can be stored in advance or downloaded from the Internet and stored when the device is used. The present application does not specifically limit the source of the computer program or computer instruction in the memory. The coupling in the embodiments of the present application is an indirect coupling or 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.

[0090] In a seventh aspect, the present application provides a computer-readable storage medium storing a computer program or computer instructions, wherein the computer program or computer instructions are executed by a processor to implement any of the aforementioned methods of the third aspect.

[0091] In an eighth aspect, the present application provides a computer-readable storage medium storing a computer program or computer instructions, wherein the computer program or computer instructions are executed by a processor to implement any of the aforementioned methods of the fourth aspect.

[0092] In a ninth aspect, the present application provides a computer program product. When the computer program product is executed by a processor, any of the aforementioned methods in the third aspect will be executed.

[0093] In a tenth aspect, the present application provides a computer program product. When the computer program product is executed by a processor, any of the aforementioned methods in the fourth aspect will be executed.

[0094] In the eleventh aspect, an embodiment of the present application provides a chip, which includes a processor, wherein the processor is used to execute a computer program or computer instructions stored in a memory, so that the chip executes the method described in any one of the third aspects.

[0095] In the twelfth aspect, an embodiment of the present application provides a chip, which includes a processor, wherein the processor is used to execute a computer program or computer instructions stored in a memory, so that the chip executes any of the methods described in the fourth aspect.

[0096] The solutions provided in the third to twelfth aspects are used to implement or cooperate with the corresponding methods provided in the first or second aspects, and therefore can achieve the same or corresponding beneficial effects as the corresponding methods in the first or second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] The following is an introduction to the drawings required for use in the embodiments of the present application.

[0098] Figures 1 to 6 is a schematic diagram of the structure of a communication device;

[0099] Figure 7 , Figure 8 , Fig.10 , Fig.11 as well as Fig.13 It is a structural schematic diagram of a signal transmission module;

[0100] Fig. 9 , Fig.12 as well as Fig.14 is a flow chart of a phase correction method;

[0101] Figures 15 to 17 A schematic diagram of the structure of a communication device. DETAILED DESCRIPTION

[0102] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0103] In the embodiment of the present application, "multiple" refers to two or more. In the embodiment of the present application, "and / or" is used to describe the association relationship of the associated objects, indicating three relationships that can exist independently. For example, A and / or B can represent: A exists alone, B exists alone, or A and B exist at the same time. The description methods such as "at least one (or at least one) of a1, a2, ... and an" used in the embodiment of the present application include the situation where any one of a1, a2, ... and an exists alone, and also include any combination of any multiple of a1, a2, ... and an, and each situation can exist alone; for example, the description method of "at least one of a, b and c" includes the situation where a is alone, b is alone, c is alone, a and b are combined, a and c are combined, b and c are combined, or a, b, c are combined.

[0104] In the various embodiments of the present application, unless otherwise specified or logically conflicting, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0105] The embodiments of the present application are described below in conjunction with the accompanying drawings.

[0106] See also Figure 1 , Figure 1 A schematic diagram of a communication device provided in an embodiment of the present application. Figure 1 The communication device 100 shown includes a radio frequency module 110, a radio frequency channel module 120 and an antenna module 130. The radio frequency module 110 can be connected to the antenna module 130 through the radio frequency channel module 120, and can interact with the terminal device through the antenna module 130 to transmit radio frequency signals.

[0107] In order to facilitate understanding of the radio frequency signal interaction process between the above communication device 100 and the terminal device, an example is given below.

[0108] Exemplarily, the communication device 100 may be a base station, which may transmit a radio frequency signal to a terminal device. Specifically, the base station generates a radio frequency signal through a radio frequency module 110, and loads data information into the radio frequency signal in the process of generating the radio frequency signal. The data information may include audio information or video information sent by the base station to the terminal device. Furthermore, the radio frequency module 110 transmits the generated radio frequency signal to the antenna module 130 through the radio frequency channel module 120. Then, the antenna module 130 may transmit the radio frequency signal to the terminal device in the form of electromagnetic wave radiation, so that the mobile terminal device may obtain the corresponding data information according to the received radio frequency signal. Among them, the terminal device may be a mobile phone, a television, a car broadcasting system, a navigation system, or other device with an electromagnetic wave receiver.

[0109] Exemplarily, in the case where the above-mentioned communication device is a base station, in addition to receiving the RF signal transmitted by the base station, the terminal device can also generate and transmit the RF signal to the antenna module 130 of the base station, and the RF signal carries the data information sent by the terminal device to the base station. Further, the antenna module 130 transmits the received RF signal to the RF module 110 through the above-mentioned RF channel module 120. Then, the RF module 110 can process the RF signal to obtain the data information carried by the RF signal. Alternatively, in the case where the terminal device communicates with other terminal devices through the base station, the RF module 110 can transmit the RF signal again through the above-mentioned RF channel module 120 and the antenna module 130 after processing the RF signal, thereby transmitting the RF signal to other terminal devices.

[0110] It is understandable that the above-mentioned communication device 100 can also be other devices with signal transmission and signal reception functions, and the embodiments of the present application are not illustrated one by one here. At the same time, the description of the RF signal interaction between the RF module 110, the RF channel module 120 and the antenna module 130 in the above-mentioned communication device 100, and the RF signal interaction between the communication device 100 and the terminal device is only an example here and does not constitute a limitation on the embodiments of the present application.

[0111] It should be noted that with the development of communication technology, in order to achieve beamforming (BeamForming, BF) of radio frequency signals, multiple-input multiple-output technology (Multiple-Input Multiple-Output, MIMO) is widely used in communication devices. Among them, MIMO technology refers to the arrangement of multiple antennas in a communication device to interact with multiple radio frequency signals with a terminal device at the same time through multiple channels corresponding to multiple antennas, including the transmission and reception of multiple radio frequency signals. MIMO technology can improve the spectrum utilization of communication devices and greatly improve channel capacity. Furthermore, the BF of the above-mentioned radio frequency signal refers to the communication device adjusting the phase parameters of multiple antennas so that radio frequency signals at certain angles obtain constructive interference, while radio frequency signals at other angles obtain destructive interference, thereby obtaining the expected signal radiation pattern.

[0112] It is understandable that the functions realized by the above MIMO technology cannot be realized by a single antenna, so the antenna module in the communication device can be an array antenna. Specifically, the array antenna refers to an antenna system composed of many identical single antennas arranged in a certain pattern, and the position of each antenna and the phase of the transmitted signal can be adjusted independently, so that the array antenna has the BF function.

[0113] In order to facilitate understanding of the specific process of the above-mentioned communication device performing multiple-input and multiple-output of radio frequency signals, that is, realizing the MIMO technology, the embodiments of the present application are described in the following contents in conjunction with the attached Figure 2 Provide explanation.

[0114] See also Figure 2 , Figure 2 Another structural diagram of a communication device provided in an embodiment of the present application. Specifically, Figure 2The communication device 200 shown includes a radio frequency module 210, a radio frequency channel module 220 and an array antenna 230. The array antenna 230 includes N antenna units (N is an integer greater than or equal to 1), and each antenna unit includes an antenna interface. The radio frequency channel module 220 includes N radio frequency channels, and the N radio frequency channels are respectively connected to the antenna interfaces of the N antenna units. The radio frequency module 210 includes N radio frequency units, and the N radio frequency units are connected to the N radio frequency channels of the radio frequency channel module 220 through the radio frequency interface. It can be seen that in the communication device 200, the N radio frequency interfaces in the radio frequency module 210 can exchange signals with the N antenna interfaces of the array antenna 230 through the N radio frequency channels.

[0115] For example, Figure 2 As shown, the RF interface a1 is connected to the antenna interface c1 through the RF channel b1, that is, the RF interface a1 and the antenna interface c1 can interact with each other through the RF channel b1; the RF interface a2 is connected to the antenna interface c2 through the RF channel b2, that is, the RF interface a2 and the antenna interface c2 can interact with each other through the RF channel b2; the RF interface an is connected to the antenna interface cn through the RF channel bn, that is, the RF interface an and the antenna interface cn can interact with each other through the RF channel bn.

[0116] It can be understood that since each of the above-mentioned RF interfaces and the corresponding antenna interface has an independent RF channel for signal interaction, different RF channels do not interfere with each other. Therefore, the RF module 210 can control each RF interface to output a corresponding RF signal, and transmit it to each of the above-mentioned antenna interfaces through the RF channel. Further, the array antenna 230 can transmit the RF signals received by each antenna interface separately, thereby realizing the transmission of multiple RF signals by the communication device 200. At this time, the RF signal is sent by the RF module 210 to the array antenna 230, and is transmitted by the array antenna 230 to the terminal device, and the RF signal is a downlink signal.

[0117] Similarly, the communication device 200 can receive multiple RF signals through multiple antenna units in the array antenna 230, and transmit the received multiple RF signals to multiple RF interfaces of the RF module 210 through multiple antenna interfaces and corresponding RF channels. Since different RF channels do not interfere with each other, the communication device 200 can independently receive RF signals from each RF interface, thereby realizing the reception of multiple RF signals by the communication device 200. At this time, the RF signal is sent from the array antenna 230 to the RF module 210, and the RF signal is an uplink signal.

[0118] In some feasible implementations, when the communication device 200 performs beamforming on the RF signal, it is necessary to independently control the phase of the RF signal transmitted by each antenna unit in the array antenna 230. To this end, the communication device 200 can be provided with multiple RF units in the RF module 210, and each RF unit is connected to a corresponding RF interface. Then, the RF module 210 independently controls each RF unit to generate a corresponding RF signal, so that the RF interface with each RF unit can output a corresponding RF signal, thereby enabling each antenna interface of the array antenna 230 to receive the RF signal transmitted by the RF channel. It can be understood that since the RF signals received by each antenna interface are generated by a corresponding RF unit, the RF signals received by each antenna interface can be signals with the same or different phases. In other words, the communication device 200 can adjust the phase of the RF signal received by each antenna interface separately. Further, the array antenna 230 can transmit each RF signal to the terminal device through each antenna unit, thereby realizing the beamforming of the above-mentioned signal.

[0119] It should be noted that due to the structural differences between different RF units, when the RF module controls different RF units to generate RF signals, there will be phase differences in the RF signals generated by different RF units, that is, there will be phase differences in the RF signals sent by each RF interface of the RF module.

[0120] Exemplarily, assume that in the above-mentioned communication device 200, the RF module 210 controls the RF unit connected to the RF interface a1 and the RF unit connected to the RF interface a2 to generate a RF signal with a phase of w1. However, due to structural differences, the RF signal generated by the RF unit connected to the RF interface a1 has a phase difference Δw1, that is, the RF signal generated by the RF unit connected to the RF interface a1 has a phase of w1+Δw1. The RF signal generated by the RF unit connected to the RF interface a2 has a phase difference Δw2, that is, the RF signal generated by the RF unit connected to the RF interface a2 has a phase of w1+Δw2. It can be seen that the RF signals generated by different RF units have phase differences. Then the RF signals sent by the RF interface a1 and the RF interface a2 will have a phase difference.

[0121] It should be noted that, in addition to the structural differences between the above-mentioned different RF units, there are also structural differences between different RF channels in the communication device, which may cause phase differences in RF signals after being transmitted through different RF channels.

[0122] Exemplarily, it is assumed that in the above-mentioned communication device 200, the phases of the RF signals output by the RF interface a1 and the RF interface a2 are both w2, the RF signal output by the RF interface a1 is transmitted to the antenna interface c1 through the RF channel b1, and the RF signal output by the RF interface a2 is transmitted to the antenna interface c2 through the RF channel b2. Due to the structural difference between the RF channel b1 and the RF channel b2, the phase difference generated by the RF signal after being transmitted through the RF channel b1 is Δw3, that is, the phase of the RF signal received by the antenna interface c1 is w2+Δw1. At the same time, the phase difference generated by the RF signal after being transmitted through the RF channel b2 is Δw4, that is, the phase of the RF signal received by the antenna interface c2 is w2+Δw4. It can be seen that different RF channels have different phase differences in the RF signal. Similarly, when each antenna interface of the array antenna 230 transmits the RF signal to each RF interface through the corresponding RF channel, the RF signal received by each RF interface will also have different phase differences under the influence of the structural differences of the RF channel.

[0123] It can be seen that when the RF signal is downlink, the structural differences of different RF units in the RF module and the structural differences of different RF channels will cause the RF signal to have a phase difference. When the RF signal is uplink, the structural differences of different RF channels will also cause the RF signal to have a phase difference. For ease of explanation, in the following content of the embodiment of the present application, the phase difference of the downlink RF signal is used to represent the phase difference caused by the RF module (i.e., different RF units) and the RF channel to the RF signal when the RF signal is generated by the RF module and sent to the array antenna through the RF channel; and the phase difference of the uplink RF signal is used to represent the phase difference caused by the RF channel to the RF signal when the RF signal is sent from the array antenna to the RF module through the RF channel.

[0124] It should be noted that when the communication device performs beamforming on the RF signal, it needs to independently control the phase of each RF signal transmitted by the array antenna. The phase difference of the RF signal during downlink will cause the phase of the RF signal transmitted by the communication device to be inaccurate. At the same time, the phase difference of the RF signal during uplink will also affect the processing of the RF signal by the communication device. For this reason, the communication device needs to correct the phase difference of the RF signal during uplink and downlink.

[0125] In some possible implementations, Figure 3 The communication device shown can correct the phase difference of the radio frequency signal when it is downlink. For details, please refer to Figure 3 , Figure 3 A further structural diagram of a communication device provided in an embodiment of the present application. Figure 3The communication device 300 includes a radio frequency module 310, a radio frequency channel module 320, and an array antenna 330. The radio frequency module 310 includes a radio frequency interface a1, a radio frequency interface a2, and a radio frequency interface a3, the radio frequency channel module 320 includes a radio frequency channel b1, a radio frequency channel b2, and a radio frequency channel b3, and the array antenna 330 includes a coupler, an antenna interface c1, an antenna interface c2, and an antenna interface c3, wherein the coupler is connected to each antenna interface of the array antenna 330. It can be understood that each of the above radio frequency interfaces is connected to each antenna interface through a corresponding radio frequency channel, and this application will not be repeated here.

[0126] The communication device 300 can use the RF interface a3 and the antenna interface c3 as calibration interfaces, and the RF channel b3 as calibration channel. Furthermore, the communication device 300 controls the RF interface a1 and the RF interface a2 to generate RF signals, and after being transmitted through the RF channel, the RF signals are received by the antenna interface c1 and the antenna interface c2. As can be seen from the above content, the RF signals received by the antenna interface c1 and the antenna interface c2 have a phase difference.

[0127] In order to correct the phase difference of the above-mentioned radio frequency signal when it is downlinked, the communication device 300 couples the radio frequency signals received by the antenna interface c1 and the antenna interface c2 through a coupler to obtain a first coupled signal corresponding to the antenna interface c1 and a second coupled signal corresponding to the antenna interface c2, and transmits the first coupled signal and the second coupled signal to the correction channel (radio frequency channel b3) through the above-mentioned antenna interface c3, and then receives them by the above-mentioned radio frequency interface a3. Due to the coupling through the coupler, the phase of the radio frequency signal does not change, that is, the phase of the first coupled signal is the same as the phase of the radio frequency signal received by the antenna interface c1, and the phase of the second coupled signal is the same as the phase of the radio frequency signal received by the antenna interface c2. Therefore, the communication device 300 can determine the phase difference of the radio frequency signal received by the antenna interface c1 and the antenna interface c2 according to the phase of the received first coupled signal and the second coupled signal, so as to correct the phase of the radio frequency signal when it is downlinked, thereby making the phase of the radio frequency signal received by the antenna interface c1 and the antenna interface c2 the same.

[0128] As can be seen from the above content, the communication device 300 needs to be provided with additional RF interfaces, RF channels, and antenna interfaces in order to transmit the RF signals received by each antenna interface back to the RF module for phase correction. Therefore, if the communication device does not have additional RF interfaces, RF channels, and antenna interfaces, the phase of the RF signals received by each antenna interface cannot be corrected. At the same time, using the RF interfaces, RF channels, and antenna interfaces in the communication device for phase correction will also reduce the utilization rate of the interface resources.

[0129] In some feasible implementations, in order to correct the phase difference of the radio frequency signal when it is downlinking when the communication device does not have an additional radio frequency interface, radio frequency channel, and antenna interface, Figure 4 The communication device 400 shown can perform phase correction through the coupler inside the RF module. Figure 4 , Figure 4 This is another structural diagram of a communication device provided in an embodiment of the present application. Figure 4 As shown, the communication device 400 includes a radio frequency module 410, a radio frequency channel module 420, and an array antenna 430. The radio frequency module 410 includes a coupler, a radio frequency interface a1, and a radio frequency interface a2, the radio frequency channel module 420 includes a radio frequency channel b1 and a radio frequency channel b2, and the array antenna 430 includes an antenna interface c1 and an antenna interface c2. The coupler is connected to each radio frequency interface of the radio frequency module 410. It can be understood that each of the above radio frequency interfaces is connected to each antenna interface through a corresponding radio frequency channel, and this application will not be repeated here.

[0130] Furthermore, the above-mentioned communication device 300 can control the RF interface a1 and the RF interface a2 to output RF signals respectively. It can be seen from the above content that due to the structural differences of the RF units, there is a phase difference between the RF signals output by the RF interface a1 and the RF interface a2. To this end, the RF module 310 couples the RF signal output by the RF interface through a coupler to obtain a third coupled signal, and couples the RF signal output by the RF interface a2 through a coupler to obtain a fourth coupled signal. Then, the above-mentioned third coupled signal and fourth coupled signal are obtained through an internal correction channel, and the phase difference of the RF signals sent by the RF interface a1 and the RF interface a2 is determined based on the third coupled signal and the fourth coupled signal.

[0131] However, it can be seen from the above content that in addition to the phase difference between the RF signals sent by different RF interfaces in the communication device, the RF signals will also have a phase difference after being transmitted through different RF channels. The RF module 410 in the above communication device 400 can only determine the phase difference of the RF signals sent between different RF interfaces. Therefore, although the communication device 400 does not require additional RF interfaces, RF channels, and antenna interfaces for phase correction, it cannot correct the phase difference generated between different RF channels, and the correction accuracy is low and the applicability is poor.

[0132] Based on the above introduction, in order to correct the phase difference of the radio frequency signal when it is downlinking without occupying the radio frequency interface, radio frequency channel and antenna interface in the communication device for phase correction, an embodiment of the present application provides a communication device. The communication device does not require an additional radio frequency interface, radio frequency channel and antenna interface to achieve phase correction of the radio frequency signal when it is downlinking. The communication device is exemplarily introduced below.

[0133] See also Figure 5 , Figure 5 A further structural diagram of a communication device provided in an embodiment of the present application. Figure 5 The communication device 500 shown includes a radio frequency module 510 , a signal transmission module 520 and an array antenna 530 .

[0134] The RF module 510 includes a plurality of RF interfaces, which are connected to the signal transmission module 520. The signal transmission module 520 is also connected to at least one antenna interface. It should be explained that the at least one antenna interface can be understood as an interface in the array antenna 530 for receiving the RF signal generated and transmitted by the RF module 510. Figure 5 In the communication device 500 shown, a simple description is given by taking the connection between the signal transmission module 520 and an antenna interface of the array antenna 530 as an example.

[0135] It can be understood that the signal transmission module 520 connects the RF module 510 and the antenna interface of the array antenna 530, so that the RF module 510 can perform signal interaction with the array antenna 530 through the signal transmission module 520. Specifically, the RF module 510 can control multiple RF interfaces to send a first RF signal, and transmit the first RF signal to the signal transmission module 520 through the multiple RF interfaces. The first RF signal can be understood as an RF signal output by multiple RF interfaces of the RF module 510. Then, the signal transmission module 520 can transmit the received first RF signal to the antenna interface of the array antenna 530.

[0136] It can be seen from the above content that when the RF module 510 sends the first RF signal to the array antenna 530 through the signal transmission module 520, the first RF signal is a downlink RF signal. At this time, there is a phase difference in the first RF signal sent by the RF module 510 through multiple RF interfaces, and the first RF signal will also have a phase difference after being transmitted by the signal transmission module 520, that is, the first RF signal will have a phase difference when it is downlink, and the antenna interface of the array antenna 530 receives the first RF signal sent by multiple RF interfaces. The phase is inconsistent. In order to correct the phase difference of the first RF signal when it is downlink, the communication device 500 in the embodiment of the present application can adjust the phase of the RF signal sent by each RF interface of the RF module 510 according to the phase difference of the first RF signal received by the antenna interface, so that the phase of the RF signal received by the array antenna 530 remains consistent, thereby completing the phase correction of the RF signal when it is downlink.

[0137] Specifically, after the signal transmission module 520 transmits the first RF signal to the antenna interface of the array antenna 530, the first RF signal can be looped back at the antenna interface to transmit to the RF module 510. Then, the RF module 510 can correct the phase of the signal sent by each RF interface according to the first RF signal transmitted back by the loopback, so as to complete the phase correction of the RF signal when it is downlinked.

[0138] It should be explained that when the first RF signal is transmitted to the antenna interface by the signal transmission module 520, the phase of the first RF signal is consistent with the phase when the first RF signal is received by the antenna interface. That is to say, the communication device 500 can use the first RF signal transmitted by the signal transmission module 520 to the antenna interface as the first RF signal received by the array antenna 530. Therefore, the communication device 500 can reflect the first RF signal at the above-mentioned antenna interface through the signal transmission module 520 to loop back the first RF signal to the RF module 510. Further, due to the phase difference of the first RF signal transmitted back by the loopback, it can be used to characterize the phase difference of the first RF signal received by the array antenna 530. Therefore, the RF module 510 can determine the phase difference of the first RF signal received by the array antenna 530 according to the first RF signal transmitted back by the loopback, so as to adjust the phase of the RF signal sent by each RF interface of the RF module 510 according to the phase difference of the first RF signal received by the array antenna 530, and then make the phase of the RF signal received by the array antenna 530 consistent, and complete the phase correction of the RF signal when it is downlink.

[0139] For example, Figure 5The RF module 510 shown includes a RF interface TX0, a RF interface TX1 and a RF interface TXn, and the RF interface TX0, the RF interface TX1 and the RF interface TXn are connected to the signal transmission module 520. Further, the RF module 510 can control the RF interface TX0, the RF interface TX1 and the RF interface TXn to send RF signals. It can be understood that the RF signals sent by the RF interface TX0, the RF interface TX1 and the RF interface TXn are the above-mentioned first RF signals. Further, the RF signals sent by each RF interface can be sent to the antenna interface through the signal transmission module 520. Then, the signal transmission module 520 can transmit the RF signals sent by each RF interface, that is, the first RF signal, to the RF module 510 in a loopback at the antenna interface. The RF module 510 corrects the phase of the signals sent by the RF interface TX0, the RF interface TX1 and the RF interface TXn according to the first RF signal transmitted back in the loopback. For example, it is assumed that in the first RF signal transmitted back through the loop, the phase difference between the RF signal corresponding to the RF interface TX0 and the RF signal corresponding to the RF interface TX1 is 10 degrees, and the phase difference between the RF signal corresponding to the RF interface TX0 and the RF signal corresponding to the RF interface TXn is 20 degrees. Among them, in the first RF signal transmitted back through the loop, the RF signal corresponding to each RF interface can be understood as the RF signal after the signal sent by each RF interface is transmitted through the signal transmission module 520 and is looped back and transmitted back at the above antenna interface.

[0140] Further, the RF module 510 can adjust the phase of the RF signal sent by the RF interface TX1 and the RF interface TXn according to the first RF signal transmitted back by the loopback. Specifically, the RF module 510 adjusts the phase difference between the signal sent by the RF interface TX1 and the signal sent by the RF interface TX0 to 10 degrees, and the phase difference between the signal sent by the RF interface TXn and the signal sent by the RF interface TX0 to 20 degrees, so that the phase of the RF signal sent by each RF interface received by the array antenna 530 is consistent. The specific implementation process is described in the subsequent description, which is not described in detail here.

[0141] For ease of understanding, the embodiment of the present application first describes the specific implementation of the signal transmission module in the following content.

[0142] For some possible implementations, see Figure 6 , Figure 6 A structural schematic diagram of a signal transmission module provided in an embodiment of the present application. Figure 6The signal transmission module 600 shown includes multiple first transmission interfaces and multiple second transmission interfaces. Among them, each of the multiple first transmission interfaces is connected to a radio frequency interface of the radio frequency module, that is, each first transmission interface is connected to a corresponding radio frequency interface. Each of the multiple second transmission interfaces is connected to an antenna interface of the array antenna, that is, each second transmission interface is connected to a corresponding antenna interface.

[0143] In the above signal transmission module 600, each first transmission interface is interconnected with any second transmission interface of the plurality of second transmission interfaces, and similarly, each second transmission interface is interconnected with any first transmission interface of the plurality of first transmission interfaces. For ease of understanding, the present application embodiment is briefly illustrated in the following content.

[0144] For example, Figure 6 As shown, it is assumed that the multiple first transmission interfaces of the above-mentioned signal transmission module 600 include the first transmission interface A1, the first transmission interface A2, the first transmission interface A3 and the first transmission interface A4, and the multiple second transmission interfaces include the second transmission interface B1, the second transmission interface B2, the second transmission interface B3 and the second transmission interface B4. Among them, the first transmission interface A1 is connected to the radio frequency interface TX0, the first transmission interface A2 is connected to the radio frequency interface TX1, the first transmission interface A3 is connected to the radio frequency interface TX2, and the first transmission interface A4 is connected to the radio frequency interface TX3. The second transmission interface B1 is connected to the antenna interface RX0, the second transmission interface B2 is connected to the antenna interface RX1, the second transmission interface B3 is connected to the antenna interface RX2, and the second transmission interface B4 is connected to the antenna interface RX3.

[0145] Furthermore, the first transmission interface A1 is interconnected with the second transmission interface B1, the second transmission interface B2, the second transmission interface B3 and the second transmission interface B4. Among them, the interconnection between the first transmission interface A1 and the second transmission interface B4 means that when the first transmission interface A1 receives the RF signal sent by the RF interface TX0, the first transmission interface A1 can transmit the received RF signal to the second transmission interface B4, and when the second transmission interface B4 receives the RF signal sent by the antenna interface RX3, the second transmission interface B4 can transmit the RF signal to the first transmission interface A1. Similarly, for the description of the interconnection between the second transmission interface B4 and the first transmission interface A2, the first transmission interface A3 and the first transmission interface A4, please refer to the above content, and this application will not repeat it here.

[0146] In summary, the second transmission interface B4 is interoperable with the first transmission interface A1, the first transmission interface A2, the first transmission interface A3 and the first transmission interface A4, which means that the second transmission interface B4 can receive RF signals sent from each RF interface. At the same time, when the second transmission interface B4 receives a RF signal sent from the antenna interface, it can send the RF signal to the first transmission interface A1, the first transmission interface A2, the first transmission interface A3 and the first transmission interface A4.

[0147] Similarly, for the description of the interconnection between other first transmission interfaces (for example, the first transmission interface A2, the first transmission interface A3 or the first transmission interface A4) in the signal transmission module 600 and the second transmission interface B1, the second transmission interface B2, the second transmission interface B3 and the second transmission interface B4, reference may be made to the description of the second transmission interface B4 mentioned above, and this application will not elaborate on it here.

[0148] It can be understood that, in the embodiment of the present application, each first transmission interface of the signal transmission module 600 can communicate with any one of the multiple second transmission interfaces, and after receiving the RF signal sent by the corresponding RF interface, the received RF signal can be sent to the multiple second transmission interfaces. Then, the above-mentioned multiple second transmission interfaces can transmit the RF signal transmitted from the first transmission interface to the corresponding antenna interface, thereby realizing the downlink of the RF signal between the RF module and the array antenna. Similarly, each second transmission interface of the signal transmission module 600 can communicate with any one of the multiple first transmission interfaces, and after receiving the RF signal sent by the corresponding antenna interface, the received RF signal can be sent to the multiple first transmission interfaces. Then, the above-mentioned multiple first transmission interfaces can transmit the RF signal transmitted from the second transmission interface to the corresponding RF interface, thereby realizing the uplink of the RF signal between the RF module and the array antenna.

[0149] In some feasible implementations, the signal transmission module includes n1 first bridges and n1 second bridges. Each first bridge includes n2 first transmission interfaces, and each second bridge includes n2 second transmission interfaces, that is, each first bridge includes the same number of transmission interfaces as each second bridge. And each first bridge is connected to any one of the plurality of second bridges. It should be noted that the above n1×n2 is equal to n, that is, the signal transmission module includes n first transmission interfaces and n second transmission interfaces.

[0150] For example, see Figure 7 , Figure 7 Another structural diagram of the signal transmission module provided in the embodiment of the present application. Figure 7The signal transmission module 700 shown includes two first bridges: a first bridge Q1 and a first bridge Q2, and two second bridges: a second bridge Q3 and a second bridge Q4. The first bridge Q1 and the first bridge Q2 include two first transmission interfaces respectively, and the second bridge Q3 and the second bridge Q4 include two second transmission interfaces respectively, that is, n1=2, n2=2.

[0151] Further, the first bridge Q1 is connected to the output interface D2 of the second bridge Q3 via the output interface D1, and the first bridge Q1 is also connected to the output interface D4 of the second bridge Q3 via the output interface D3. The first bridge Q2 is connected to the output interface D6 of the second bridge Q3 via the output interface D5, and the first bridge Q2 is also connected to the output interface D8 of the second bridge Q3 via the output interface D7. It can be seen that in the signal transmission module 700, each first bridge is connected to each second bridge via the corresponding output interface.

[0152] In the signal transmission module 700, the first transmission interface A1 of the first bridge Q1 can receive the RF signal sent by the RF interface TX0, and transmit the RF signal to the output interface D1 and the output interface D3. Then, since the output interface D1 of the first bridge Q1 is connected to the output interface D2 of the second bridge Q3, the first bridge Q1 can send the RF signal received by the output interface D1 to the output interface D2 of the second bridge Q3. The output interface D2 of the second bridge Q3 can transmit the received RF signal to the second transmission interface B1 and the second transmission interface B2, and then transmit the RF signal to the antenna interface RX0 and the antenna interface RX1.

[0153] Similarly, after receiving the RF signal transmitted from the first transmission interface A1, the output interface D3 can send the RF signal to the output interface D4 of the second bridge Q4. Then, the output interface D4 of the second bridge Q4 transmits the received RF signal to the second transmission interface B3 and the second transmission interface B4, and then transmits the RF signal to the antenna interface RX2 and the antenna interface RX3.

[0154] It can be seen that the signal transmission module 700 can transmit the radio frequency signal sent by the radio frequency interface TX0 to each antenna interface of the array antenna to complete the downlink of the radio frequency signal.

[0155] It can be understood that for the description of the RF signals sent by other RF interfaces of the RF module (such as RF interface TX1, RF interface TX2 or RF interface TX3) being transmitted to each antenna interface through the signal transmission module 700, reference can be made to the above content, and this application will not elaborate on it here.

[0156] In addition, the second transmission interface B1 of the second bridge Q3 can receive the RF signal sent by the antenna interface RX0, and transmit the RF signal to the output interface D2 and the output interface D6. Then, since the output interface D2 of the second bridge Q3 is connected to the output interface D1 of the first bridge Q1, the second bridge Q3 can send the RF signal received by the output interface D2 to the output interface D1 of the first bridge Q1. The output interface D1 of the first bridge Q1 can transmit the received RF signal to the first transmission interface A1 and the first transmission interface A2, and further transmit the RF signal sent by the antenna interface RX0 to the RF interface TX0 and the RF interface TX1.

[0157] Similarly, after receiving the RF signal transmitted from the second transmission interface B1, the output interface D6 can send the RF signal to the output interface D5 of the first bridge Q2. Then, the output interface D5 of the first bridge Q2 transmits the received RF signal to the first transmission interface A3 and the first transmission interface A4, and further transmits the RF signal sent by the antenna interface RX0 to the RF interface TX2 and the RF interface TX3.

[0158] It can be seen that the signal transmission module 700 can transmit the RF signal sent by the antenna interface RX0 to each RF interface of the RF module to complete the uplink of the RF signal.

[0159] It can be understood that for the description of the RF signals sent by other antenna interfaces of the array antenna (such as antenna interface RX1, antenna interface RX2 or antenna interface RX3) being transmitted to each RF interface through the signal transmission module 700, reference can be made to the above content, and this application will not elaborate on it here.

[0160] In some feasible implementations, the first bridge or the second bridge may be a bridge composed of resistors and having two input interfaces and two output interfaces. For example, each bridge includes a first interface, a second interface, a third interface, and a fourth interface. It should be noted that two interfaces of the first interface, the second interface, the third interface, and the fourth interface are used for input signals, and the other two interfaces are used for output signals. For example, the second interface and the third interface of the bridge may be used as Figure 7 In the embodiment, the first transmission interface A1 and the first transmission interface A2 of the first bridge Q1 are used to receive the RF signal sent by the RF interface. Then the first interface and the fourth interface of the bridge can be used as the output interface D1 and the output interface D6 of the first bridge Q1, and are used to output the RF signal to the corresponding second bridge. It can be understood that this is only an example and does not constitute a limitation on the embodiments of the present application.

[0161] In some feasible implementations, when the number of RF interfaces and antenna interfaces is an even number, the signal transmission module can add a first bridge connected to the RF interface and add a second bridge connected to the antenna interface, so that each RF interface of the RF module can send an RF signal to each antenna interface through the signal transmission module, and each antenna interface of the array antenna can send an RF signal to each RF interface through the signal transmission module. For example, assuming that the number of RF interfaces and antenna interfaces is 8, and the number of output interfaces of the first bridge and the second bridge is 2, the signal transmission module can be provided with 4 first bridges and 4 second bridges, and the number of first transmission interfaces is 2×4=8, that is, each RF interface can be connected to a corresponding first transmission interface. Similarly, the number of second transmission interfaces is 2×4=8, that is, each antenna interface can be connected to a corresponding second transmission interface.

[0162] In some feasible implementations, when the number of RF interfaces and antenna interfaces is an odd number, the signal transmission module can add a first bridge connected to the RF interface and add a second bridge connected to the antenna interface, so that each RF interface of the RF module can send a RF signal to each antenna interface through the signal transmission module, and each antenna interface of the array antenna can send a RF signal to each RF interface through the signal transmission module. For example, assuming that the number of RF interfaces and antenna interfaces is 7, and the number of output interfaces of the first bridge and the second bridge is 2, the signal transmission module can be set with 4 first bridges and 4 second bridges, then the number of first transmission interfaces is 2×4=8, and the number of second transmission interfaces is 2×4=8. Further, the 7 RF interfaces of the RF module can be connected to a first transmission interface respectively, and the extra first transmission interface can be used as an idle interface. At the same time, the 7 antenna interfaces of the array antenna can be connected to a second transmission interface respectively, and the extra second transmission interface can be used as an idle interface.

[0163] In some feasible implementations, the signal transmission module of the embodiment of the present application further includes a first switch. As can be seen from the above content, the signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. Among them, the above-mentioned first switch is arranged between the first antenna interface and the second transmission interface correspondingly connected to the first antenna interface, and the above-mentioned first antenna interface is any one of the at least one antenna interface of the array antenna. In other words, one end of the first switch is connected to any antenna interface of the array antenna, and the other end is connected to the second transmission interface correspondingly connected to the antenna interface.

[0164] For example, see Figure 8 , Figure 8 Another structural schematic diagram of the signal transmission module provided in an embodiment of the present application. Figure 8The signal transmission module 800 shown includes multiple first transmission interfaces, multiple second transmission interfaces and a first switch K1. Among them, the first transmission interface A1 is connected to the RF interface TX0, the first transmission interface A2 is connected to the RF interface TX1, the first transmission interface A3 is connected to the RF interface TX2, and the first transmission interface A4 is connected to the RF interface TX3; the second transmission interface B1 is connected to the antenna interface RX0, the second transmission interface B2 is connected to the antenna interface RX1, the second transmission interface B3 is connected to the antenna interface RX2, and the second transmission interface B4 is connected to the antenna interface RX3 through the first switch K1. It should be noted that Figure 8 The first switch K1 shown is arranged between the second transmission interface B4 and the antenna interface RX3 as an example only. The first switch K1 may also be arranged between other second transmission interfaces and corresponding antenna interfaces, which is not limited in the present application.

[0165] It should be noted that the first switch K1 can be turned off or on under the control of the RF module. Among them, when the first switch K1 is turned on, the second transmission interface B4 is connected to the antenna interface RX3. At this time, when the second transmission interface B4 receives a radio frequency signal transmitted from any first transmission interface, the second transmission interface B4 can send the received radio frequency signal to the antenna interface RX3 through the turned-on first switch K1. Similarly, when the antenna interface RX3 sends a radio frequency signal, the radio frequency signal can be sent to the second transmission interface B4 through the turned-on first switch K1. In other words, when the first switch K1 is turned on, the second transmission interface B4 can communicate with the antenna interface RX3.

[0166] Among them, when the first switch K1 is turned off, the second transmission interface B4 is disconnected from the antenna interface RX3. At this time, when the second transmission interface B4 receives a radio frequency signal transmitted from any first transmission interface, the second transmission interface B4 can send the received radio frequency signal to the antenna interface RX3. However, since the first switch K1 is turned off at this time, the radio frequency signal cannot be transmitted to the antenna interface RX3. Further, when the radio frequency signal sent by the second transmission interface B4 is transmitted to the first switch K1, the turned-off first switch K1 will reflect the radio frequency signal, so that the radio frequency signal is transmitted back to the second transmission interface B4. It can be seen from the above content that the second transmission interface B4 is interconnected with each first transmission interface. Therefore, the second transmission interface B4 can transmit the reflected radio frequency signal to each first transmission interface, thereby sending the reflected radio frequency signal to each radio frequency interface of the radio frequency module through each first transmission interface. It can be seen that when the first switch K1 is turned off, the first switch K1 can intercept the RF signal sent from the second transmission interface B4 to the antenna interface RX3, and reflect it back to the second transmission interface B4, so that the RF signal is looped back and transmitted to the RF module at the antenna interface RX3.

[0167] Exemplarily, assuming that the first switch is a thyristor, a transistor, a field effect transistor or a thyristor, the RF module can provide a turn-on voltage to the first switch so that the first switch can be turned on. In addition, the RF module can provide a turn-off voltage to the first switch so that the first switch is turned off.

[0168] Alternatively, assuming that the first switch is a relay, the RF module can energize the electromagnet to draw down the armature to close the working circuit, that is, turn on the first switch. In addition, the electromagnet can be powered off to lose its magnetism, and the spring can pull up the armature to cut off the working circuit, that is, turn off the first switch.

[0169] It is understandable that the above description is only an example and does not constitute a limitation on the embodiments of the present application. The embodiments of the present application do not limit the specific form and on-off control method of the first switch.

[0170] For example, Figure 8 The radio frequency module shown controls the first switch K1 to be turned off.

[0171] In some feasible implementations, the signal transmission module may include multiple first switches. Each first switch may be set between any second transmission interface and the corresponding antenna interface connected to the second transmission interface. Exemplarily, it is assumed that the signal transmission module 800 includes 4 first switches: a first switch K1, a first switch K5, a first switch K6, and a first switch K7. Then the first switch K1 may be set between the second transmission interface B4 and the antenna interface RX3, the first switch K5 may be set between the second transmission interface B3 and the antenna interface RX2, the first switch K6 may be set between the second transmission interface B2 and the antenna interface RX1, and the first switch K7 may be set between the second transmission interface B1 and the antenna interface RX0.

[0172] Exemplarily, the turned-off first switch K1 can reflect the first RF signal sent by the second transmission interface B4 to the antenna interface RX3 back to the second transmission interface B4, so that the first RF signal sent by each RF interface is looped back and transmitted to the RF module at the antenna interface RX3. Similarly, the turned-off first switch K5 can reflect the first RF signal sent by the second transmission interface B3 to the antenna interface RX2 back to the second transmission interface B3, so that the first RF signal sent by each RF interface is looped back and transmitted to the RF module at the antenna interface RX2. Similarly, the turned-off first switch K6 can reflect the first RF signal sent by the second transmission interface B2 to the antenna interface RX1 back to the second transmission interface B2, so that the first RF signal sent by each RF interface is looped back and transmitted to the RF module at the antenna interface RX1. Similarly, the turned-off first switch K7 can reflect the first RF signal sent by the second transmission interface B1 to the antenna interface RX0 back to the second transmission interface B1, so that the first RF signal sent by each RF interface is looped back and transmitted to the RF module at the antenna interface RX0. In general, the first switch provided at each antenna interface can reflect the radio frequency signal sent to the antenna interface when it is turned off. It is understandable that the specific implementation of each first switch when it is turned on or off can refer to the above content. The number of first switches in the signal transmission module can be adjusted according to actual conditions, and this application does not limit it here.

[0173] In some feasible implementations, the communication device in the embodiment of the present application can Figure 8 The signal transmission module 800 shown in the figure loops back the first RF signal sent by multiple RF interfaces to the RF module at the above-mentioned antenna interface, so that the RF module can correct the phase of the signal sent by each RF interface according to the first RF signal looped back.

[0174] To facilitate understanding of the phase correction process of the above communication device, the following is combined with Fig. 9 The phase correction process includes but is not limited to the following steps:

[0175] S901, control the first switch to turn off.

[0176] As can be seen from the above content, the signal transmission module can reflect the RF signal sent by the second transmission interface connected to the first switch by turning off the first switch, and loop back the reflected RF signal to each RF interface of the RF module. Therefore, in order to enable the RF module to perform phase correction according to the RF signal transmitted back by the loopback, the first switch can be controlled to be turned off before the RF module sends the RF signal.

[0177] It should be noted that, when the signal transmission module includes multiple first switches, the specific implementation of each first switch is the same. For ease of explanation, the embodiment of the present application is described here by taking the signal transmission module including a first switch as an example. And the first switch is arranged between the first antenna interface and the second transmission interface correspondingly connected to the first antenna interface. The first antenna interface is any one of the multiple antenna interfaces of the array antenna.

[0178] S902: When a first RF interface among the multiple RF interfaces is used to receive a signal, the RF module sends a second RF signal through multiple second RF interfaces.

[0179] After the RF module controls the first switch to be turned off, the RF module can determine any one of the multiple RF interfaces as the first RF interface, and determine the remaining RF interfaces of the multiple RF interfaces except the first RF interface as multiple second RF interfaces. Further, the RF module controls the multiple second RF interfaces to send a second RF signal, and controls the first RF interface to receive a signal. The second RF signal can be understood as multiple RF signals respectively sent by the multiple second RF interfaces.

[0180] For example, Figure 8 The RF module shown can determine the RF interface TX1 as the first RF interface, and the RF interface TX1 is used to receive signals; and determine the RF interface TX0, the RF interface TX2 and the RF interface TX3 as the second RF interface, and the RF interface TX0, the RF interface TX2 and the RF interface TX3 are used to send a second RF signal. The second RF signal can be understood to include a RF signal sent by the RF interface TX0, a RF signal sent by the RF interface TX2 and a RF signal sent by the RF interface TX3.

[0181] S903. The signal transmission module transmits a second radio frequency signal to the first antenna interface.

[0182] It can be seen from the above content that each first transmission interface of the signal transmission module is interconnected with each second transmission interface, so the second RF signals sent by multiple second RF interfaces can be transmitted to each second transmission interface of the signal transmission module through multiple first transmission interfaces with the multiple second RF interfaces. Then, each second transmission interface can transmit the received second RF signal to the corresponding antenna interface. However, a turned-off first switch is set between the first antenna interface and the corresponding second transmission interface in the signal transmission module, and the turned-off first switch can reflect the second RF signal. The second RF signals sent by other second transmission interfaces to the corresponding antenna interface will not be reflected. Therefore, the specific implementation of other second transmission interfaces other than the second transmission interface corresponding to the first antenna interface is not discussed in the embodiments of the present application.

[0183] It can be understood that after the multiple first transmission interfaces of the signal transmission module receive the second radio frequency signal, the second radio frequency signal can be transmitted to the first antenna interface through the second transmission interface.

[0184] For example, Figure 8 The signal transmission module shown transmits the RF signal sent by the RF interface TX0 to the second transmission interface B4 through the first transmission interface A1, transmits the RF signal sent by the RF interface TX2 to the second transmission interface B4 through the first transmission interface A3, and transmits the RF signal sent by the RF interface TX3 to the second transmission interface B4 through the first transmission interface A4. Then, the second transmission interface B4 can send the RF signals sent by each second RF interface to the first antenna interface.

[0185] S904: The signal transmission module, at the first antenna interface, loops back and transmits the second radio frequency signal to the first radio frequency interface through the turned-off first switch.

[0186] It is understandable that, since the first switch is turned off, when the second RF signal is transmitted to the first antenna interface, it will be reflected back to the second transmission interface of the signal transmission module by the turned-off first switch. Further, the signal transmission module can loop back the reflected second RF signal and transmit it to the first RF interface.

[0187] It should be noted that, in the process of the signal transmission module performing loopback transmission on the second RF signal, each second transmission interface of the signal transmission module is interconnected with each first transmission interface, and the second RF signal will actually be looped back and transmitted to each RF interface through each first transmission interface. However, when multiple second RF interfaces send the second RF signal and also receive the second RF signal transmitted back in the loop, the signals received by the multiple second RF interfaces will have a large noise, and the signal-to-noise ratio of the multiple second RF interfaces is relatively low. Therefore, the specific implementation of the second RF signal transmitted back in the loopback received by the multiple second RF interfaces is not discussed in the embodiments of the present application. In contrast, the RF module uses the first RF interface as the RF interface for receiving signals, so the signal-to-noise ratio of the first RF interface is relatively high, and the received second RF signal transmitted back in the loopback is relatively accurate.

[0188] For example, Figure 8 When the first switch K1 is turned off, the second RF signal transmitted from the second transmission interface B4 can be reflected back to the second transmission interface B4. Then, the second transmission interface B4 can loop back the reflected second RF signal to the first RF interface TX1 through the interconnected first transmission interface A2.

[0189] S905: The radio frequency module corrects phases of signals sent by the plurality of second radio frequency interfaces based on the second radio frequency signal looped back.

[0190] As can be seen from the above content, the phase difference of the second RF signal transmitted back through the loop can be understood as the phase difference of the signals sent by the multiple second RF interfaces when they are downlinked. Therefore, in order to correct the phase difference of the signals sent by the second RF interface when they are downlinked, the RF module can determine the phase difference of the signals sent by the multiple second RF interfaces when they are downlinked based on the second RF signal transmitted back through the loop, and correct the phase of the signals sent by the multiple second RF interfaces based on the phase difference, so that the phases of the signals sent by the multiple second RF interfaces when they are downlinked remain consistent.

[0191] It should be noted that, in order to distinguish the RF signals sent by different RF interfaces in the second RF signal and transmitted through loopback when the RF module receives the second RF signal transmitted through loopback, the RF module can adjust the frequency or amplitude of the RF signal sent by each second RF interface among the multiple second RF interfaces, which is different from other second RF interfaces. It is understandable that after the loopback transmission by the signal transmission module, the frequency or amplitude of the RF signal corresponding to each second RF interface in the second RF signal remains unchanged. Therefore, the RF module can distinguish the RF signals corresponding to different second RF interfaces according to the frequency or amplitude of the signal in the second RF signal, thereby determining the phase difference of the signal sent between the multiple second RF interfaces when it is downlinked.

[0192] For example, Figure 8 The RF module shown controls the RF interface TX0 to send a RF signal with a frequency of f1, controls the RF interface TX2 to send a RF signal with a frequency of f2, and controls the RF interface TX3 to send a RF signal with a frequency of f3. Further, after the RF interface TX1 (i.e., the first RF interface) receives the second RF signal transmitted in a loopback, the RF module can determine the RF signal with a frequency of f1 in the second RF signal transmitted in the loopback as the RF signal corresponding to the RF interface TX0, the RF signal with a frequency of f2 as the RF signal corresponding to the RF interface TX2, and the RF signal with a frequency of f3 as the RF signal corresponding to the RF interface TX3, thereby distinguishing the RF signals in the second RF signal.

[0193] After determining the RF signals corresponding to each second RF interface, the RF module can use the RF signal corresponding to one of the second RF interfaces as a standard RF signal, and obtain the phase difference between the multiple RF signals corresponding to the multiple second RF interfaces. For example, assume that the RF module can use the RF signal corresponding to the RF interface TX0 as a standard RF signal. At this time, in the second RF signal looped back, the phase difference between the RF signal with a frequency of f1 (i.e., the RF signal corresponding to the RF interface TX0) and the RF signal with a frequency of f2 (i.e., the RF signal corresponding to the RF interface TX2) is +10 degrees, and the phase difference between the RF signal with a frequency of f1 and the RF signal with a frequency of f3 (i.e., the RF signal corresponding to the RF interface TX3) is -20 degrees.

[0194] It should be noted that when the RF module interacts with the array antenna for RF signals, each RF interface interacts with a corresponding antenna interface. Figure 8 The RF interface TX0 shown will send a RF signal to the antenna interface RX0 through the first transmission interface A1 and the second transmission interface B1. In the above-mentioned phase correction process, the RF signal sent by the RF interface TX0 is transmitted from the first transmission interface A1 to the second transmission interface B4. That is, the transmission path of the RF signal when the communication device performs phase correction is different from the transmission path when the RF signal interacts in the communication device. Among them, the above-mentioned transmission path can be understood as a path from a first transmission interface to a second transmission interface in the signal transmission module. From the above content, it can be seen that the phase difference generated by the RF signal after being transmitted through different RF channels (that is, the above-mentioned transmission path) is different. In other words, when the communication device performs phase correction, the phase difference of the RF signal obtained by the loopback transmission is not necessarily the same as the phase difference when the RF signal interacts.

[0195] It is understandable that when each transmission interface (i.e., the first transmission interface and the second transmission interface) of the signal transmission module is fixedly connected to the RF module and the array antenna, the phase difference between different transmission paths is also fixed. To this end, the RF module can obtain the phase difference between the above-mentioned different transmission paths in advance before performing phase correction, and then during the phase correction process, determine the phase difference of the signals sent by different RF interfaces when the RF module performs RF signal interaction based on the phase difference of the second RF signal transmitted back by the loopback transmission and the phase difference between different transmission paths.

[0196] For example, it is assumed that in the above signal transmission module 800, when the RF signal is transmitted from the first transmission interface A1 to the second transmission interface B1, a phase difference of -5 degrees will be generated, and when it is transmitted from the first transmission interface A1 to the second transmission interface B4, a phase difference of -10 degrees will be generated. At the same time, when the RF signal is transmitted from the first transmission interface A3 to the second transmission interface B3, a phase difference of -6 degrees will be generated, and when it is transmitted from the first transmission interface A3 to the second transmission interface B4, a phase difference of -8 degrees will be generated.

[0197] It can be seen that when the RF signals interact, the phase difference generated when the RF signal is transmitted from the first transmission interface A1 to the second transmission interface B1 is 1 degree behind the phase difference (-5+4)=-1 generated when the RF signal is transmitted from the first transmission interface A3 to the second transmission interface B3. In other words, when the phases of the RF signals sent by the RF interface TX0 and the RF interface TX2 are consistent, the phase difference of the RF signals received by the antenna interface RX0 and the antenna interface RX2 is -1 degree.

[0198] In addition, during the phase correction process, the phase difference generated when the RF signal is transmitted from the first transmission interface A1 to the second transmission interface B4 is 2 degrees behind the phase difference (-10+8)=-2 generated when the RF signal is transmitted from the first transmission interface A3 to the second transmission interface B4. That is to say, when the phases of the RF signals sent by the RF interface TX0 and the RF interface TX2 are consistent, the phase difference of the RF signal received by the antenna interface RX3 is -2 degrees.

[0199] Therefore, during the phase correction process, if the phase difference of the RF signal corresponding to the RF interface TX0 in the looped-back RF signal is 10 degrees (+10 degrees) ahead of the phase difference of the RF signal corresponding to the RF interface TX2, then according to the above-mentioned pre-known phase difference of different transmission paths of -2 degrees, the RF module can determine that the phase difference between the RF signals sent by the RF interface TX0 and the RF interface TX2 is +10-(-2)=+12 degrees, that is, the phase of the signal sent by the RF interface TX0 is 12 degrees ahead of the phase of the signal sent by the RF interface TX0.

[0200] Further, it can be known from the above content that in the process of RF signal interaction, the phase difference generated by the RF signal transmitted from the first transmission interface A1 to the second transmission interface B1 lags by 1 degree compared to the phase difference generated by the RF signal transmitted from the first transmission interface A3 to the second transmission interface B3. At the same time, the phase of the signal sent by the RF interface TX0 is 12 degrees ahead of the phase of the signal sent by the RF interface TX2. The RF module can determine that in the process of RF signal interaction, the phase difference between the RF signal sent by the RF interface TX0 from the first transmission interface A1 to the second transmission interface B1 and the RF signal sent by the RF interface TX2 from the first transmission interface A3 to the second transmission interface B3 is (12-1) = +11 degrees, that is, the phase of the RF signal received by the antenna interface RX0 is 11 degrees ahead of the phase of the RF signal received by the antenna interface.

[0201] Therefore, according to the phase difference of +11 degrees in the above-mentioned RF signal interaction process, the RF module can control the phase of the RF interface RX2 sending the RF signal to be 11 degrees ahead of the phase of the RF interface RX0 sending the RF signal, so that the antenna interface RX0 receives the RF signal, and the phase of the RF signal received by the antenna interface is +11-11=0, that is, the phase difference is 0, and the phase remains consistent.

[0202] Similarly, the RF module can determine the phase difference between the RF signal sent by the RF interface TX0 and the RF signal sent by the RF interface TX3 based on the above content, thereby controlling the phase of the RF signal sent by the RF interface TX3 according to the phase difference, and then correcting the phase of the signals sent by the RF interface TX0 and the RF interface TX3.

[0203] It is understandable that after the above correction, the phases of the RF signals sent by RF interface TX0, RF interface TX2 and RF interface TX3 received by the array antenna remain consistent. The RF module implements phase correction of RF interface TX0, RF interface and RF interface TX3.

[0204] It can be seen that the RF module sends the second RF signal by controlling multiple second RF interfaces, and receives the second RF signal looped back by the signal transmission module through the first RF interface, and can correct the phase of the RF signal sent by the multiple second RF interfaces based on the second RF signal looped back.

[0205] S906. The RF module sends a third RF signal through the first RF interface and the third RF interface.

[0206] It can be seen from the above content that the RF module can correct the phase of the RF signals sent by multiple second RF interfaces according to the second RF signal looped back by the signal transmission module. However, the first RF interface of the RF module is only used to receive the second RF signal looped back, and is not used to send RF signals. The RF module cannot determine the phase difference of the RF signal sent by the first RF interface when it is downlink. Therefore, after correcting the phase of the RF signals sent by multiple second RF interfaces, the RF module can also correct the first RF interface through a second phase correction to perform phase correction on each of the multiple RF interfaces.

[0207] Specifically, after the RF module performs phase correction on multiple second RF interfaces, any one of the multiple second RF interfaces that have completed the correction can be used as the third RF interface. Then, the RF module can adjust the phase of the first RF interface when sending the RF signal downlink to be consistent with the phase of the third RF interface when sending the RF signal downlink, so as to complete the phase correction of the first RF interface.

[0208] For example, Figure 8 After the RF module completes phase correction for RF interface TX0, RF interface TX2 and RF interface TX3, RF interface TX0 can be determined as the third RF interface. Alternatively, the RF module can also determine RF interface TX2 or RF interface TX3 as the third RF interface, which is not limited in the present embodiment.

[0209] Furthermore, the RF module can control the RF interface TX1 (i.e., the first RF interface) and the RF interface TX0 (the third RF interface) to send a third RF signal. The third RF signal can be understood as including the RF signal sent by the RF interface TX1 and the RF signal sent by the third RF interface TX0. As can be seen from the above content, in order to distinguish the RF signals sent by different RF interfaces, the RF module can adjust the frequency or amplitude of the RF signals sent by each RF interface to be different. For example, the RF module can control the frequency of the RF signal sent by the RF interface TX1 to be f4, and control the frequency of the RF signal sent by the RF interface TX0 to be f5.

[0210] S907: The signal transmission module, at the first antenna interface, loops back and transmits the third RF signal to the fourth RF interface of the RF module through the turned-off first switch.

[0211] It is understandable that the turned-off first switch can reflect the third RF signal transmitted by the second transmission interface to the first antenna interface, so that the signal transmission module can receive the reflected third RF signal and loop back the reflected third RF signal to the fourth RF interface of the RF module. The fourth RF interface is any one of the calibrated multiple second RF interfaces except the third RF interface. It is understandable that the fourth RF interface is a RF interface that has been phase-corrected by the RF module.

[0212] For example, Figure 8 The RF module shown may determine the RF interface TX2 or the RF interface TX3 as the fourth RF interface when the RF interface TX0 is determined as the third RF interface, and the present application does not impose any limitation on this.

[0213] Similarly, the specific implementation of the signal transmission module looping back the third RF signal to the fourth RF interface can refer to the above step S904, in which the signal transmission module loops back the second RF signal to the first RF interface, and the embodiments of the present application are not described in detail here.

[0214] S908: The radio frequency module corrects the phase of the signal sent by the first radio frequency interface based on the third radio frequency signal transmitted back through the loopback.

[0215] Similarly, the RF module can correct the phase of the RF signal sent by the first RF interface according to the phase difference between the RF signal corresponding to the first RF interface and the RF signal corresponding to the second RF interface in the third RF signal looped back, so that the phase of the RF signal sent by the first RF interface when downlink is consistent with the phase of the RF signal sent by the third RF interface when downlink. That is, the RF signals sent by the first RF interface and the third RF interface are received by the array antenna in the same phase.

[0216] For example, assuming Figure 8 The RF module shown controls the RF interface TX1 (i.e., the first RF interface) to send a RF signal with a frequency of f4, and controls the RF interface TX0 (i.e., the third RF interface) to send a RF signal with a frequency of f5. Further, after the RF interface TX3 (i.e., the fourth RF interface) receives the third RF signal transmitted back through the loopback, the RF module can determine the RF signal with a frequency of f4 in the third RF signal transmitted back through the loopback as the RF signal corresponding to the RF interface TX1, and the RF signal with a frequency of f5 as the RF signal corresponding to the RF interface TX0, thereby distinguishing the RF signals in the third RF signal.

[0217] After determining the RF signals corresponding to the RF interface TX0 and the RF interface TX1 in the third RF signal transmitted back through the loop, the RF module can use the RF signal corresponding to the RF interface TX0 as the standard RF signal, and obtain the phase difference between the RF signal corresponding to the RF interface TX1 and the RF signal corresponding to the RF interface TX0. For example, in the third RF signal transmitted back through the loop, the phase of the RF signal with a frequency of f4 (i.e., the RF signal corresponding to the RF interface TX1) lags by 30 degrees compared to the phase of the RF signal with a frequency of f5 (i.e., the RF signal corresponding to the RF interface TX0).

[0218] Similarly, the RF module can determine the phase difference of signals sent by different RF interfaces when performing RF signal interaction based on the phase difference of the second RF signal transmitted back by the loopback transmission and the phase difference between different transmission paths acquired in advance, thereby realizing phase correction of the RF interface TX1. For details, please refer to the specific implementation of S905 above, which will not be elaborated in this application.

[0219] It can be seen that the RF module can implement the first phase correction through the above S901-S905, and then implement the phase correction of multiple second RF interfaces. Further, the RF module can implement the second phase correction through the above S906-S908, and then implement the phase correction of the first RF interface. Therefore, in the embodiment of the present application, the RF module performs phase correction on each of the multiple RF interfaces without setting up additional RF interfaces or antenna interfaces.

[0220] In some feasible implementations, in addition to implementing phase correction for multiple RF interfaces through two phase corrections according to the above-mentioned phase correction steps S901-S908, the RF module may also adopt other phase correction steps to implement phase correction for multiple RF interfaces.

[0221] In addition, it can be seen from the above content that the communication device may include multiple first switches, and each first switch can reflect the RF signal sent by the second transmission interface corresponding to the first switch when it is turned off, so that the signal transmission module loops back the RF signals sent by the multiple RF interfaces to the RF module at the antenna interface corresponding to each first switch. For ease of understanding, the embodiment of the present application takes the communication device including the first switch K1, the first switch K5 and the first switch K6 as an example to illustrate the specific implementation of the above phase correction.

[0222] For example, Figure 8The first switch K1 shown is arranged between the antenna interface RX3 and the second transmission interface B4, the first switch K5 is arranged between the antenna interface RX2 and the second transmission interface B3, and the first switch K6 is arranged between the antenna interface RX1 and the second transmission interface B2. Furthermore, in the first phase correction process, the RF module can determine the RF interface TX0 and the RF interface TX2 as the second RF interface after determining that the RF interface TX1 is the first RF interface. Then, the RF module can control the first switch K1 to be turned off, and the first switch K5 and the first switch K6 to be turned on. The signal transmission module reflects the RF signal sent by the RF interface TX0 and the RF interface TX2 to the second transmission interface B4 through the turned-off first switch K1, and then loops back to the RF interface TX1. The RF module can perform phase correction on the RF interface TX0 and the RF interface TX2 based on the RF signal transmitted back in the loop.

[0223] Furthermore, during the second phase correction process, the RF module can control the first switch K5 to be turned on, the first switch K1 and the first switch K6 to be turned on, and then control the RF interfaces TX1 and TX0 to send RF signals. The signal transmission module transmits the RF signals sent by the RF interfaces TX1 and TX0 to the RF module in a loopback at the antenna interface RX2 through the turned-off first switch K5. The RF module receives the looped-back RF signal through the RF interface TX3, thereby performing phase correction on the RF interface TX1 based on the RF interface TX0 that has completed phase correction.

[0224] Furthermore, during the third phase correction process, the RF module can control the first switch K6 to be turned on, the first switch K1 and the first switch K5 to be turned on, and then control the RF interfaces TX3 and TX0 to send RF signals. The signal transmission module transmits the RF signals sent by the RF interfaces TX3 and TX0 to the RF module in a loopback at the antenna interface RX1 through the turned-off first switch K6. The RF module receives the looped-back RF signal through the RF interface TX1, thereby performing phase correction on the RF interface TX3 based on the RF interface TX0 that has completed the phase correction. It can be understood that the RF module implements phase correction for multiple RF interfaces.

[0225] In general, the number of times the RF module performs phase correction and the number of first switches in the signal transmission module can be adjusted according to the actual application scenario. At the same time, each time a phase correction is performed, the number of RF ports used to send and receive RF signals can also be adjusted according to practical conditions. The embodiments of the present application do not give examples one by one.

[0226] In some feasible implementations, the communication device can not only Figure 8The signal transmission module 800 shown in the figure loops back the first RF signal to the RF module at the first antenna interface, and can also transmit the first RF signal to the RF module through Fig.10 The signal transmission module shown implements the above content. For details, please refer to Fig.10 , Fig.10 Another structural schematic diagram of the signal transmission module provided in an embodiment of the present application. Fig.10 The signal transmission module 1000 shown includes a plurality of first transmission interfaces, a plurality of second transmission interfaces, a second switch K2 and a third switch K3.

[0227] The second switch K2 is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface. The second antenna interface is any one of the at least one antenna interface of the array antenna. Fig.10 The second antenna interface is the antenna interface RX3. The third switch K3 is arranged between the fifth RF interface and the first transmission interface correspondingly connected to the fifth RF interface. The fifth RF interface is any one of the multiple RF interfaces of the RF module. Fig.10 The fifth radio frequency interface is the radio frequency interface TX0 , that is, the third switch K3 is arranged between the radio frequency interface TX0 and the first transmission interface A1 .

[0228] It is understandable that the RF module can control the second switch K2 and the third switch K3 to be turned on. Fig.10 As shown, the first end i1 of the second switch K2 is connected to the first end i2 of the first conductive path, and the first end i3 of the third switch K3 is connected to the second end i4 of the first conductive path. At the same time, the second end i5 of the second switch K2 is also connected to the second transmission interface (i.e., the second transmission interface B4) corresponding to the second antenna interface (i.e., the antenna interface RX3), and the second end i6 of the third switch K3 is also connected to the fifth radio frequency interface (i.e., the radio frequency interface TX0).

[0229] It can be seen that when the second switch K2 and the third switch K3 are turned on, the second transmission interface B4 can be connected to the RF interface TX0 through the second switch K2, the first conductive path and the third switch K3. It can be understood that at this time, the second transmission interface B4 can loop back the received first RF signal to the RF interface TX0 of the RF module through the second switch K2, the first conductive path and the third switch K3.

[0230] In addition, when the second switch K2 is disconnected from the third switch K3, the first end i1 of the second switch K2 is connected to the antenna interface RX3, and the first end i3 of the third switch K3 is connected to the first transmission interface A1. At this time, the RF interface TX0 can transmit the transmitted RF signal to the first transmission interface A1 through the third switch K3, and the first transmission interface A1 transmits it to the second transmission interface B4. Then, the second transmission interface B4 can transmit the above RF signal to the antenna interface RX3 through the second switch K2, thereby completing the downlink of the RF signal. Similarly, when the second switch K2 is disconnected from the third switch K3, the antenna interface RX3 can send the RF signal to the RF module through the signal transmission module to complete the uplink of the RF signal.

[0231] It can be understood that the specific implementation of other configurations of the second switch and the third switch can refer to the above content, and this application does not give examples one by one here.

[0232] For example, the second switch K2 may be an electronic switch such as a thyristor, a transistor, a field effect transistor, a thyristor or a relay. Similarly, the third switch K3 may be an electronic switch such as a thyristor, a transistor, a field effect transistor, a thyristor or a relay. It is understood that this is only an example and does not constitute a limitation on the embodiments of the present application.

[0233] It is understandable that the above description is only an example and does not constitute a limitation on the embodiments of the present application. The embodiments of the present application do not limit the specific form and on / off control method of the second switch and the third switch.

[0234] In some feasible implementations, the signal transmission module may include multiple second switches. Each second switch may be set between any second transmission interface and the corresponding antenna interface connected to the second transmission interface. Exemplarily, it is assumed that the signal transmission module 1000 includes 4 second switches: a first switch K2, a first switch K8, a first switch K9, and a first switch K10. Then the first switch K2 may be set between the second transmission interface B4 and the antenna interface RX3, the first switch K8 may be set between the second transmission interface B3 and the antenna interface RX2, the first switch K9 may be set between the second transmission interface B2 and the antenna interface RX1, and the first switch K10 may be set between the second transmission interface B1 and the antenna interface RX0. It is understood that the specific implementation of each second switch when turned on or off can refer to the above content. The number of second switches in the signal transmission module can be adjusted according to actual conditions, and this application is not limited here.

[0235] In some feasible implementations, the signal transmission module may further include a fourth switch. The fourth switch is arranged between the seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface. The seventh RF interface is any one of the multiple RF interfaces of the RF module except the fifth RF interface.

[0236] For example, see Fig.11 , Fig.11 Another structural schematic diagram of the signal transmission module provided in an embodiment of the present application. Fig.11 In the signal transmission module 1100 shown, the fourth switch K4 is arranged between the radio frequency interface TX3 and the first transmission interface A4. In addition, the second switch K2 is arranged between the antenna interface RX3 and the second transmission interface B4. The third switch K3 is arranged between the radio frequency interface TX0 and the first transmission interface A1.

[0237] It should be noted that the above-mentioned setting positions of the second switch, the third switch and the fourth switch are only examples and do not constitute a limitation to the embodiments of the present application.

[0238] The RF module can control the second switch K2 and the fourth switch K4 to be turned on. When the second switch K2 and the fourth switch K4 are turned on, Fig.11 As shown, the first end i1 of the second switch K2 is connected to the first end i7 of the second conductive path, and the first end i8 of the fourth switch K4 is connected to the second end i9 of the second conductive path. At the same time, the second end i5 of the second switch K2 is also connected to the second transmission interface (i.e., the second transmission interface B4) correspondingly connected to the second antenna interface (i.e., the antenna interface RX3), and the second end i10 of the fourth switch K4 is also connected to the seventh radio frequency interface (i.e., the radio frequency interface TX3).

[0239] It can be seen that when the second switch K2 and the fourth switch K4 are turned on, the second transmission interface B4 can be connected to the RF interface TX3 through the second switch K2, the second conductive path and the fourth switch K4. It can be understood that at this time, the second transmission interface B4 can loop back the received first RF signal to the RF interface TX3 of the RF module through the second switch K2, the first conductive path and the fourth switch K4.

[0240] In addition, when the second switch K2 is disconnected from the fourth switch K4, the first end i1 of the second switch K2 is connected to the antenna interface RX3, and the first end i8 of the fourth switch K4 is connected to the first transmission interface A4. At this time, the RF interface TX4 can transmit the transmitted RF signal to the first transmission interface A4 through the fourth switch K4, and the first transmission interface A4 transmits it to the second transmission interface B4. Then, the second transmission interface B4 can transmit the above RF signal to the antenna interface RX3 through the second switch K2, thereby completing the downlink of the RF signal. Similarly, when the second switch K2 is disconnected from the fourth switch K4, the antenna interface RX3 can send the RF signal to the RF module through the signal transmission module to complete the uplink of the RF signal.

[0241] Exemplarily, the second switch K2 may be an electronic switch such as a thyristor, a transistor, a field effect transistor, a thyristor, or a relay. Similarly, the third switch K3 may be an electronic switch such as a thyristor, a transistor, a field effect transistor, a thyristor, or a relay. Similarly, the fourth switch K4 may be an electronic switch such as a thyristor, a transistor, a field effect transistor, a thyristor, or a relay. It is understood that this is only an example and does not constitute a limitation on the embodiments of the present application.

[0242] It is understandable that the above description is only an example and does not constitute a limitation on the embodiments of the present application. The embodiments of the present application do not limit the specific forms and on / off control methods of the second switch, the third switch, and the fourth switch.

[0243] It is understandable that the RF module can also control the second switch K2 and the third switch K3 to be turned on. The specific implementation of the second switch K2 and the third switch K3 to be turned on can refer to the above content, and the embodiment of the present application will not be repeated here.

[0244] In some feasible implementations, the communication device in the embodiment of the present application can Fig.11 The signal transmission module 1100 shown in the figure loops back the first RF signal sent by multiple RF interfaces to the RF module at the above-mentioned second antenna interface (antenna interface RX3), so that the RF module can correct the phase difference of the downlink RF signal according to the first RF signal looped back.

[0245] To facilitate understanding of the phase correction process of the above communication device, the following is combined with Fig.12 The phase correction process includes but is not limited to the following steps:

[0246] S1201, control the second switch and the third switch to be turned on.

[0247] It can be seen from the above content that when the second switch and the third switch are turned on, the second switch can transmit the RF signal sent by the second transmission interface to the third switch through the first conductive path, and transmit it to the fifth RF interface (RF interface TX0) of the RF module through the third switch. Therefore, in order to enable the RF module to perform phase correction according to the RF signal transmitted back by the loopback, before the RF module sends the RF signal, the second switch and the third switch can be controlled to be turned on.

[0248] It should be noted that when the second switch and the third switch are turned on, the second switch and the fourth switch are disconnected. At this time, the seventh RF interface is connected to the first transmission interface through the fourth switch and can send RF signals to the first transmission interface.

[0249] It should be noted that, when the signal transmission module includes multiple second switches, the specific implementation of each second switch is the same. For ease of description, the embodiment of the present application is described here by taking the signal transmission module including one second switch as an example. And the first switch is arranged between the second antenna interface and the second transmission interface corresponding to the second antenna interface.

[0250] S1202. The radio frequency module sends a fourth radio frequency signal through multiple sixth radio frequency interfaces.

[0251] After the RF module controls the second switch and the third switch to be turned on, the fifth RF interface can be determined as an interface for receiving signals, and the remaining RF interfaces except the fifth RF interface among the multiple RF interfaces can be determined as multiple sixth RF interfaces. Further, the RF module controls the multiple sixth RF interfaces to send a fourth RF signal. The fourth RF signal can be understood as multiple RF signals respectively sent by multiple sixth RF interfaces.

[0252] For example, Figure 8 The RF interface TX0 shown is the fifth RF interface, and the RF interface TX0 is used to receive signals; and the RF interface TX1, the RF interface TX2 and the RF interface TX3 are determined as the sixth RF interface, and the RF interface TX1, the RF interface TX2 and the RF interface TX3 are used to send a fourth RF signal. The fourth RF signal can be understood to include a RF signal sent by the RF interface TX1, a RF signal sent by the RF interface TX2 and a RF signal sent by the RF interface TX3.

[0253] S1203: The signal transmission module transmits a fourth radio frequency signal to the second antenna interface.

[0254] The specific implementation of this step can refer to the above S903, and the embodiment of the present application will not be described in detail here.

[0255] S1204: The signal transmission module, at the second antenna interface, loops back and transmits the fourth radio frequency signal to the fifth radio frequency interface through the first conductive path.

[0256] When the third switch is connected to the second switch, it can be seen from the above that when the fourth RF signal is transmitted to the second antenna interface, it will be looped back to the third switch through the first conductive path by the second switch. Further, the third switch can transmit the looped back fourth RF signal to the fifth RF interface.

[0257] For example, Fig.11 When the third switch K3 is turned on with the second switch K2, the fourth radio frequency signal transmitted from the second transmission interface B4 can be transmitted to the radio frequency interface TX0 (ie, the fifth radio frequency interface) through the first conductive path.

[0258] S1205. The radio frequency module corrects phases of the signals sent by the plurality of sixth radio frequency interfaces based on the fourth radio frequency signal looped back.

[0259] It can be understood that the specific implementation of this step can refer to the above S905, and the embodiment of the present application will not be described in detail here.

[0260] S1206: The RF module controls the second switch and the fourth switch to be turned on.

[0261] It can be seen from the above content that the RF module implements the first phase correction through the above S1201-S1205 when the second switch and the third switch are turned on. Specifically, the RF module can perform phase correction on the multiple sixth RF interfaces based on the fourth RF signal sent by the multiple sixth RF interfaces. However, the above-mentioned fifth RF interface is only used to receive the fourth RF signal looped back and is not used to send RF signals. The RF module cannot determine the phase difference of the RF signal sent by the fifth RF interface when it is downlink. Therefore, after correcting the phase of the RF signals sent by the multiple sixth RF interfaces, the RF module can also correct the fifth RF interface through the second phase correction to perform phase correction on each of the multiple RF interfaces.

[0262] Specifically, during the second phase correction process, the RF module can control the second switch and the fourth switch to be turned on. At this time, the second switch can loop back the RF signal sent by the second transmission interface to the fourth switch through the second conductive path, and transmit it to the seventh RF interface of the RF module through the fourth switch.

[0263] It should be noted that when the second switch and the fourth switch are turned on, the second switch and the third switch are disconnected. At this time, the fifth RF interface is connected to the first transmission interface through the second switch and can send RF signals to the first transmission interface.

[0264] S1207. The radio frequency module sends a fifth radio frequency signal through multiple eighth radio frequency interfaces.

[0265] Specifically, after the RF module performs phase correction on multiple sixth RF interfaces, any sixth RF interface among the multiple sixth RF interfaces that have completed the correction can be used as the eighth RF interface. Then, the RF module can adjust the phase of the fifth RF interface when sending the RF signal downlink to be consistent with the phase of the eighth RF interface when sending the RF signal downlink, so as to complete the phase correction of the fifth RF interface.

[0266] For example, Fig.11 After the RF module completes phase correction for RF interface TX1, RF interface TX2 and RF interface TX3, RF interface TX1 can be determined as the eighth RF interface. Alternatively, the RF module can also determine RF interface TX2 or RF interface TX3 as the eighth RF interface, which is not limited in the present embodiment.

[0267] Further, the RF module can control the RF interface TX0 (i.e., the fifth RF interface) and the RF interface TX1 (the eighth RF interface) to send a fifth RF signal. The fifth RF signal can be understood as including the RF signal sent by the RF interface TX0 and the RF signal sent by the RF interface TX1. From the above content, it can be seen that the RF module can adjust the frequency or amplitude of the RF signal sent by the RF interface TX0 and the RF interface TX1 to be different.

[0268] S1208. The signal transmission module, at the second antenna interface, loops back and transmits the fifth radio frequency signal to the seventh radio frequency interface through the second conductive path.

[0269] When the second switch and the fourth switch are turned on, it can be seen from the above that when the fifth RF signal is transmitted to the second antenna interface, it will be looped back to the fourth switch through the second conductive path by the second switch. Further, the fourth switch can transmit the looped back fifth RF signal to the seventh RF interface.

[0270] For example, Fig.11 When the fourth switch K4 is turned on with the second switch K2, the fifth RF signal transmitted from the second transmission interface B4 can be transmitted to the RF interface TX3 (ie, the seventh RF interface) through the second conductive path.

[0271] S1209: The radio frequency module corrects the phase of the signal sent by the fifth radio frequency interface based on the fifth radio frequency signal looped back.

[0272] It can be understood that the specific implementation of this step can refer to the above S908, and the embodiment of the present application will not be described in detail here.

[0273] Similarly, the RF module can not only implement phase correction for multiple RF interfaces through two phase corrections according to the phase correction steps of S1201-S1209, but also implement phase correction for multiple RF interfaces through other phase correction steps. For details, please refer to the above content, and this application will not elaborate on it here.

[0274] In summary, in this solution, the RF module is connected to the antenna interface through the signal transmission module, and sends the first RF signal to the signal transmission module through multiple RF interfaces. The signal transmission module can send the above-mentioned first RF signal to the antenna interface, and loop back the first RF signal to the RF module at the antenna interface, so that the RF module can correct the phase of the signals sent by the above-mentioned multiple RF interfaces according to the first RF signal looped back. It can be understood that the RF module can send RF signals through each RF interface, and then the signal transmission module can loop back the RF signal sent by each RF interface to the RF module, so that the RF module performs phase correction on each RF interface that sends the RF signal. Therefore, in this solution, the communication device can correct the phase of the signal sent by each RF interface of the RF module without setting an additional correction interface, which can save interface resources and has high applicability.

[0275] The present application embodiment is combined with Figures 5 to 12 A communication device is introduced, which can correct the phase difference of the radio frequency signal sent by each radio frequency interface in the radio frequency module when it is downlink, so that the phase of the radio frequency signal sent by each radio frequency interface of the radio frequency module received by the array antenna remains consistent. In addition, an embodiment of the present application also provides a communication device, which can correct the phase difference of the radio frequency signal sent by each antenna interface in the array antenna when it is uplink, so that the phase of the radio frequency signal sent by each antenna interface of the array antenna received by the radio frequency module remains consistent.

[0276] For some possible implementations, see Fig.13 , Fig.13 A further structural diagram of a communication device provided in an embodiment of the present application. Fig.13 The communication device 1300 shown includes a radio frequency module 1310, a signal transmission module 1320, a signal transmission module 1330 and an array antenna 1340. The radio frequency module 1310 includes a plurality of radio frequency interfaces, and the plurality of radio frequency interfaces are connected to the signal transmission module 1320, and the signal transmission module 1320 is also connected to the first antenna interface RX3. The first antenna interface RX3 is any one of the plurality of antenna interfaces of the array antenna 1340. The first antenna interface RX3 is also connected to the signal transmission module 1330.

[0277] The signal transmission module 1330 may generate a radio frequency signal and send the radio frequency signal to the signal transmission module 1320 through the first antenna interface RX3. The signal transmission module 1320 may transmit the received radio frequency signal to multiple radio frequency interfaces. Fig.13 In the signal transmission module 1320 shown, the signal transmission module 1320 transmits the received RF signal to the RF interface TX0, the RF interface TX1, the RF interface TX2 and the RF interface TX3 respectively.

[0278] The specific implementation of the above signal transmission module can refer to the above content about Figure 6 to Figure 7 The description of the embodiments of the present application will not be repeated here.

[0279] After receiving the RF signal through the multiple RF interfaces, the RF module 1310 may correct the phase of the signal received by each RF interface according to the received signal, that is, correct the phase difference of the RF signal when it is uplinked.

[0280] To facilitate understanding of the phase correction process of the above communication device, the following is combined with Fig.14 The phase correction process includes but is not limited to the following steps:

[0281] S1401. The radio frequency module receives radio frequency signals transmitted by the signal transmission module through multiple radio frequency interfaces.

[0282] It can be understood that the above-mentioned signal transmission module can generate a radio frequency signal, and transmit the radio frequency signal to multiple radio frequency interfaces of the radio frequency module through the signal transmission module.

[0283] For example, Fig.13 The signal transmission module 1330 shown is connected to the second transmission interface B4 of the signal transmission module 1320 through the first antenna interface RX3, and the second transmission interface B4 is interconnected with multiple first transmission interfaces. When the signal transmission module 1330 sends a radio frequency signal through the first antenna interface RX3, the second transmission interface B4 receives the radio frequency signal and transmits it to the interconnected first transmission interface A1, the first transmission interface A2, the first transmission interface A3 and the first transmission interface A4, and then transmits the radio frequency signal to each radio frequency interface of the radio frequency module 1310.

[0284] S1402: The radio frequency module corrects phases of the signals received by the multiple radio frequency interfaces based on the radio frequency signals received by the multiple radio frequency interfaces.

[0285] Among them, the specific implementation of the phase correction performed by the above-mentioned RF module 1310 can refer to the relevant description about S905 in the above content, and the embodiment of the present application will not be repeated here.

[0286] It can be understood that after the RF module 1310 completes the above-mentioned phase correction for multiple RF interfaces, when the array antenna 1340 sends the RF signal to the signal transmission module 1320 through each antenna interface, and transmits it to each RF interface of the RF module 1310 through the signal transmission module 1320, the phase of the RF signal received by each RF interface of the RF module 1310 remains consistent.

[0287] It should be noted that the above Figure 3 or Figure 4 In the embodiment, the communication device 300 or the communication device 400 obtains the coupled signals of multiple radio frequency signals through the coupler to perform phase correction according to the phase difference of the multiple coupled signals. However, since the coupler has a large loss on the radio frequency signal, it usually reaches more than 20dB. The radio frequency signal sent by the communication device 300 or the communication device 400 needs to have a high strength to ensure that the coupler obtains a coupled signal of sufficient strength. It can be seen that the signal source of the communication device 300 or the communication device 400 needs to have a high power.

[0288] Compared to the above-mentioned communication device 300 or communication device 400, the communication device 1300 in the embodiment of the present application performs loopback transmission of the RF signal through the signal transmission module 1320 to perform phase correction. Among them, the signal transmission module 1320 realizes the transmission of the RF signal through an electric bridge (such as the first electric bridge and the second electric bridge mentioned above). The structure of the electric bridge is simple and the transmission loss of the RF signal is small, that is, the loss of the RF signal by the signal transmission module 1320 is small, usually only 6dB. Therefore, the signal transmission module 1330 in the communication device 1300 can use a signal transmission source with a simple structure, which does not need to have a high transmission intensity, and can reduce the cost, power consumption and design difficulty of the communication device.

[0289] In summary, the signal transmission module in this solution can send the RF signal sent by the signal transmission module to multiple RF interfaces of the RF module through multiple first bridges and multiple second bridges. The structure of the signal transmission module is simple, and the loss of the RF signal is small. While ensuring that the strength of the RF signal received by the RF module is large enough, the RF signal strength sent by the signal transmission module in the embodiment of the present application is relatively small. Therefore, the signal transmission module can adopt a simple signal transmission source, save costs, and reduce the size and design difficulty of the device.

[0290] The above mainly introduces the phase correction method provided in the embodiment of the present application. It can be understood that in order to realize the corresponding functions mentioned above, the above-mentioned RF module and array antenna include hardware structures and / or software modules corresponding to the execution of each function. In combination with the units and steps of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 exceed the scope of the embodiments of the present application.

[0291] The embodiment of the present application can divide the RF module into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0292] In the case of dividing each functional module into corresponding functional modules, Fig.15 A possible logical structure diagram of a communication device 1500 is shown. The communication device 1500 may be the above-mentioned radio frequency module, or may be a chip in the radio frequency module, or may be a processing system in the radio frequency module, etc. The communication device 1500 includes a sending unit 1501 and a receiving unit 1502. Among them:

[0293] The sending unit 1501 is configured to send a first radio frequency signal through multiple radio frequency interfaces;

[0294] The receiving unit 1502 is used to receive a first RF signal looped back through the signal transmission module; wherein the first RF signal is transmitted to at least one antenna interface through the signal transmission module, and is looped back to the RF module at at least one antenna interface; and based on the first RF signal looped back, the phases of signals sent by multiple RF interfaces are corrected.

[0295] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface;

[0296] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0297] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned n1 second bridges; wherein n1×n2 is equal to n.

[0298] In a possible implementation, the signal transmission module further includes a first switch, wherein the first switch is arranged between the first antenna interface and the second transmission interface correspondingly connected to the first antenna interface; the first antenna interface is any one of the at least one antenna interface;

[0299] The receiving unit 1502 is further configured to receive the first radio frequency signal transmitted back by the signal transmission module at the first antenna interface through the turned-off first switch loopback.

[0300] In a possible implementation, the RF module controls the first switch to be turned off, and the sending unit 1501 is further used to send a second RF signal through multiple second RF interfaces when a first RF interface among the multiple RF interfaces is used to receive a signal; the first RF interface is any one of the multiple RF interfaces, and the second RF interface is the remaining RF interfaces among the multiple RF interfaces except the first RF interface;

[0301] The receiving unit 1502 is further configured to receive, through the first RF interface, the second RF signal transmitted back by the signal transmission module at the first antenna interface through the turned-off first switch loopback.

[0302] In a possible implementation, the sending unit 1501 is further configured to send a third RF signal through the first RF interface and the third RF interface; the third RF interface is any one of the plurality of second RF interfaces;

[0303] The aforementioned receiving unit 1502 is also used to receive, through the fourth RF interface of the aforementioned RF module, the third RF signal transmitted back by the aforementioned signal transmission module at the aforementioned first antenna interface through the aforementioned turned-off first switch loopback, and the aforementioned fourth RF interface is any one of the aforementioned multiple second RF interfaces except the aforementioned third RF interface.

[0304] In a possible implementation, the signal transmission module further includes a second switch and a third switch; the second switch is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface; the second antenna interface is any one of the at least one antenna interface; the third switch is arranged between the fifth radio frequency interface and the first transmission interface correspondingly connected to the fifth radio frequency interface; the fifth radio frequency interface is any one of the plurality of radio frequency interfaces;

[0305] The receiving unit 1502 is further configured to control the second switch and the third switch to be turned on, so that the first end of the second switch is connected to the first end of the first conductive path, and the first end of the third switch is connected to the second end of the first conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the third switch is also connected to the fifth radio frequency interface;

[0306] The aforementioned receiving unit 1502 is also used to receive, through the aforementioned fifth RF interface, the fourth RF signal looped back through the aforementioned first conductive path by the aforementioned signal transmission module at the aforementioned second antenna interface; the aforementioned fourth RF signal is an RF signal sent by multiple sixth RF interfaces, and the aforementioned multiple sixth RF interfaces are the remaining RF interfaces among the aforementioned multiple RF interfaces except the aforementioned fifth RF interface.

[0307] In a possible implementation, the signal transmission module further includes a fourth switch, wherein the fourth switch is arranged between the seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface; the seventh RF interface is any one of the plurality of sixth RF interfaces;

[0308] The receiving unit 1502 is further configured to control the second switch and the fourth switch to be turned on, so that the first end of the second switch is connected to the first end of the second conductive path, and the first end of the fourth switch is connected to the second end of the second conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the fourth switch is also connected to the seventh radio frequency interface;

[0309] The aforementioned receiving unit 1502 is also used to receive, through the aforementioned seventh RF interface, the fifth RF signal looped back by the aforementioned signal transmission module at the aforementioned second antenna interface through the aforementioned second switch that is turned on by the aforementioned fourth switch; the aforementioned fifth RF signal is the RF signal sent by the aforementioned fifth RF interface and the eighth RF interface, and the aforementioned eighth RF interface is any one of the aforementioned multiple RF interfaces except the aforementioned seventh RF interface.

[0310] Fig.15 The specific operations and beneficial effects of each unit in the communication device 1500 can be found in the above Figures 6 to 12 The corresponding descriptions in possible embodiments thereof will not be repeated here.

[0311] Fig.16 A possible logical structure diagram of a communication device 1600 is shown. The communication device 1600 may be the above-mentioned radio frequency module, or may be a chip in the radio frequency module, or may be a processing system in the radio frequency module, etc. The communication device 1600 includes a receiving unit 1601 and a correction unit 1602. Among them:

[0312] The receiving unit 1601 is used to receive the radio frequency signal transmitted by the signal transmission module through the multiple radio frequency interfaces; wherein the radio frequency signal is sent by the signal transmission module through the first antenna interface and transmitted to the multiple radio frequency interfaces by the signal transmission module;

[0313] The correction unit 1602 is configured to correct the phases of the signals received by the plurality of radio frequency interfaces based on the radio frequency signals received by the plurality of radio frequency interfaces.

[0314] In a possible implementation, the signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface;

[0315] The aforementioned signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces. The aforementioned multiple first transmission interfaces are connected one-to-one with the aforementioned multiple radio frequency interfaces, and the aforementioned multiple second transmission interfaces are connected one-to-one with the aforementioned multiple antenna interfaces. Each of the aforementioned first transmission interfaces is interconnected with any one of the aforementioned multiple second transmission interfaces.

[0316] In one possible implementation, the aforementioned signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the aforementioned signal transmission module includes n1 first bridges and n1 second bridges; each of the aforementioned first bridges includes n2 aforementioned first transmission interfaces, and each of the aforementioned second bridges includes n2 aforementioned second transmission interfaces, and each of the aforementioned first bridges is connected to any one of the aforementioned n1 second bridges; wherein n1×n2 is equal to n.

[0317] Fig.16 The specific operations and beneficial effects of each unit in the communication device 1600 can be found in the above Figure 13 to Figure 14 The corresponding descriptions in possible embodiments thereof will not be repeated here.

[0318] Fig.17 The figure shows a possible hardware structure diagram of the communication device 1700 provided by the present application. The communication device 1700 may be the radio frequency module in the above-mentioned embodiment method, or may be a chip in the radio frequency module, or may be a processing system in the radio frequency module, etc. The communication device 1700 includes: a processor 1701, a memory 1702, and a communication interface 1703. The processor 1701, the communication interface 1703, and the memory 1702 may be connected to each other or connected to each other through a bus 1704.

[0319] Exemplarily, the memory 1702 is used to store computer programs and data of the communication device 1700. The memory 1702 may include, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM) or portable read only memory (compact disc read-only memory, CD-ROM), etc.

[0320] The above is used to achieve Fig. 9 The software or program code required for the functions of all or part of the units of the illustrated method is stored in the memory 1702 .

[0321] If the software or program code required for the functions of some units is stored in the memory 1702, the processor 1701 can not only call the program code in the memory 1702 to implement some functions, but also cooperate with other components (such as the communication interface 1703) to complete the Fig. 9 Other functions described by the method shown (such as the function of receiving information).

[0322] There may be multiple communication interfaces 1703 , which are used to support the communication device 1700 to communicate, such as receiving or sending data, signals or signaling.

[0323] Exemplarily, the processor 1701 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The processor 1701 may be used to read the program stored in the memory 1702, execute the above Fig. 9 The method and the operations performed by the radio frequency module in a possible implementation manner. For example, the processor 1701 may perform the following operations:

[0324] Sending a first radio frequency signal through the aforementioned multiple radio frequency interfaces;

[0325] receiving a first radio frequency signal looped back through the aforementioned signal transmission module; wherein the aforementioned first radio frequency signal is transmitted to the aforementioned at least one antenna interface through the aforementioned signal transmission module, and is looped back and transmitted to the aforementioned radio frequency module at the aforementioned at least one antenna interface;

[0326] Based on the first radio frequency signal looped back, the phases of the signals sent by the plurality of radio frequency interfaces are corrected.

[0327] Fig.17 The specific operations and beneficial effects performed by the communication device 1700 can be found in the above Fig. 9 The description of the method and its possible implementation methods will not be repeated here.

[0328] In another possible implementation, the processor 1701 may be used to read the program stored in the memory 1702 and execute the program Fig.14 The method and the operations performed by the radio frequency module in a possible implementation manner. For example, the processor 1701 may perform the following operations:

[0329] Receiving the radio frequency signal transmitted by the aforementioned signal transmission module through the aforementioned multiple radio frequency interfaces; wherein the aforementioned radio frequency signal is sent by the aforementioned signal transmission module through the aforementioned first antenna interface, and is transmitted by the aforementioned signal transmission module to the aforementioned multiple radio frequency interfaces;

[0330] Based on the radio frequency signals received by the plurality of radio frequency interfaces, the phases of the signals received by the plurality of radio frequency interfaces are corrected.

[0331] Fig.17 The specific operations and beneficial effects performed by the communication device 1700 can be found in the above Fig.14 The description of the method and its possible implementation methods will not be repeated here.

[0332] The present application also provides a chip, which includes a processor, wherein the processor is used to execute a computer program or computer instruction stored in a memory, so that the chip performs the above Fig. 9 The operations performed by the RF module in the aforementioned method in any one of the possible method embodiments.

[0333] The present application also provides a chip, which includes a processor, wherein the processor is used to execute a computer program or computer instruction stored in a memory, so that the chip performs the above Fig.14 The operations performed by the RF module in the aforementioned method in any one of the possible method embodiments.

[0334] The present application also provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the above Fig. 9 The operations performed by the RF module in the aforementioned method in any one of the possible method embodiments.

[0335] The present application also provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the above Fig.14 The operations performed by the RF module in the aforementioned method in any one of the possible method embodiments.

[0336] The present application also provides a computer program product. When the computer program product is read and executed by a computer, the above Fig. 9 In any of the possible method embodiments, the operations performed by the RF module in the aforementioned method will be executed.

[0337] The present application also provides a computer program product. When the computer program product is read and executed by a computer, the above Fig.14 In any of the possible method embodiments, the operations performed by the RF module in the aforementioned method will be executed.

[0338] It should be noted that the prefixes such as "first" and "second" used in this application are only used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. For example, if the described object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the described object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of described objects is not limited by the prefix and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the described object is a "device", then the "first device" and the "second device" may be the same device, a device of the same type, or devices of different types; for another example, if the described object is "information", then the "first information" and the "second information" may be information of the same content or information of different contents. For example, without departing from the scope of the various aforementioned examples, a user-side device may be referred to as a server, and similarly, a server may be referred to as a user-side device. Both the user-side device and the server may be nodes, and in some cases, may be separate and different nodes. In short, the use of prefixes used to distinguish between description objects in the embodiments of the present application does not constitute a limitation on the described objects. For the statement of the described objects, refer to the description in the context of the claims or embodiments, and no unnecessary limitation shall be constituted due to the use of such prefixes.

[0339] It should be noted that the description methods such as "at least one of a1, a2, ... and an" used in the embodiments of the present application include the situation where any one of a1, a2, ... and an exists alone, and also include any combination of any multiple of a1, a2, ... and an, and each situation can exist alone. For example, the description method of "at least one of a, b and c" includes the situation where a is alone, b is alone, c is alone, a combination of a and b, a combination of a and c, b and c, or a combination of abc.

[0340] It should also be understood that in each embodiment of the embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0341] It should also be understood that the term “comprise” (also known as “includes,” “including,” “comprises” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0342] It should also be understood that the references to "one embodiment", "an embodiment", or "a possible implementation" throughout the specification mean that specific features, structures, or characteristics related to the embodiment or implementation are included in at least one embodiment of the embodiments of the present application. Therefore, the references to "in one embodiment" or "in one embodiment", or "a possible implementation" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0343] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication device, characterized in that: The device comprises a radio frequency module and a signal transmission module; the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to the signal transmission module, and the signal transmission module is also connected to at least one antenna interface; The RF module is used to send a first RF signal through the multiple RF interfaces; The signal transmission module is used to transmit the first radio frequency signal to the at least one antenna interface, and loop back the first radio frequency signal to the radio frequency module at the at least one antenna interface; The radio frequency module is further used to correct the phases of the signals sent by the multiple radio frequency interfaces based on the first radio frequency signal transmitted in the loopback.

2. The device according to claim 1, characterized in that The signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface; The signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces, the multiple first transmission interfaces are connected to the multiple radio frequency interfaces in a one-to-one correspondence, the multiple second transmission interfaces are connected to the multiple antenna interfaces in a one-to-one correspondence, and each of the first transmission interfaces is interconnected with any one of the second transmission interfaces among the multiple second transmission interfaces.

3. The device according to claim 2, characterized in that The signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the signal transmission module includes n1 first bridges and n1 second bridges; each of the first bridges includes n2 first transmission interfaces, and each of the second bridges includes n2 second transmission interfaces, and each of the first bridges is connected to any one of the multiple second bridges; wherein n1×n2 equals n.

4. The device according to claim 2 or 3, characterized in that The signal transmission module further includes a first switch, wherein the first switch is arranged between a first antenna interface and the second transmission interface correspondingly connected to the first antenna interface; the first antenna interface is any one of the at least one antenna interface; The looping back and transmitting the first radio frequency signal to the radio frequency module at the at least one antenna interface includes: At the first antenna interface, the first radio frequency signal is looped back and transmitted to the radio frequency module through the turned-off first switch.

5. The device according to claim 4, characterized in that The radio frequency module is used to control the first switch to turn off; The RF module is used to send a first RF signal through the multiple RF interfaces, including: when a first RF interface among the multiple RF interfaces is used to receive a signal, the RF module is used to send a second RF signal through multiple second RF interfaces; the first RF interface is any one of the multiple RF interfaces, and the second RF interface is the remaining RF interfaces among the multiple RF interfaces except the first RF interface; The signal transmission module is specifically configured to loop back and transmit the second radio frequency signal to the first radio frequency interface of the radio frequency module through the turned-off first switch at the first antenna interface.

6. The device according to claim 5, characterized in that The RF module is used to send a first RF signal through the multiple RF interfaces, and further includes: the RF module is used to send a third RF signal through the first RF interface and a third RF interface; the third RF interface is any one of the multiple second RF interfaces; The signal transmission module is specifically used to loop back the third RF signal to the fourth RF interface of the RF module at the first antenna interface through the turned-off first switch, and the fourth RF interface is any one of the multiple second RF interfaces except the third RF interface.

7. The device according to claim 2 or 3, characterized in that The signal transmission module also includes a second switch and a third switch; the second switch is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface; the second antenna interface is any one of the at least one antenna interface; the third switch is arranged between the fifth radio frequency interface and the first transmission interface correspondingly connected to the fifth radio frequency interface; the fifth radio frequency interface is any one of the multiple radio frequency interfaces; The RF module is used to control the second switch and the third switch to be turned on, so that the first end of the second switch is connected to the first end of the first conductive path, and the first end of the third switch is connected to the second end of the first conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the third switch is also connected to the fifth RF interface; The looping back and transmitting the first radio frequency signal to the radio frequency module at the at least one antenna interface includes: At the second antenna interface, looping back the fourth radio frequency signal to the fifth radio frequency interface through the first conductive path; The fourth RF signal is a RF signal sent by a plurality of sixth RF interfaces, and the plurality of sixth RF interfaces are the remaining RF interfaces among the plurality of RF interfaces except the fifth RF interface.

8. The device according to claim 7, characterized in that The signal transmission module further includes a fourth switch, wherein the fourth switch is arranged between a seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface; the seventh RF interface is any one of the plurality of sixth RF interfaces; The RF module is used to control the second switch and the fourth switch to be turned on, so that the first end of the second switch is connected to the first end of the second conductive path, and the first end of the fourth switch is connected to the second end of the second conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the fourth switch is also connected to the seventh RF interface; The looping back and transmitting the first radio frequency signal to the radio frequency module at the at least one antenna interface further includes: At the second antenna interface, looping back the fifth radio frequency signal to the seventh radio frequency interface through the second conductive path; The fifth RF signal is a RF signal sent by the fifth RF interface and an eighth RF interface, and the eighth RF interface is any one of the multiple RF interfaces except the seventh RF interface.

9. A communication device, characterized in that: The device comprises a radio frequency module, a signal transmission module and a signal transmitting module; the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to the signal transmission module, the signal transmission module is also connected to a first antenna interface; the first antenna interface is also connected to the signal transmitting module; The signal transmission module is used to send a radio frequency signal through the first antenna interface; The signal transmission module is used to transmit the radio frequency signal to the radio frequency module through the multiple radio frequency interfaces; The radio frequency module is used to correct the phases of the signals received by the multiple radio frequency interfaces based on the radio frequency signals received by the multiple radio frequency interfaces.

10. The device according to claim 9, characterized in that The signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the first antenna interface; The signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces, the multiple first transmission interfaces are connected to the multiple radio frequency interfaces in a one-to-one correspondence, the multiple second transmission interfaces are connected to the multiple antenna interfaces in a one-to-one correspondence, and each of the first transmission interfaces is interconnected with any one of the second transmission interfaces among the multiple second transmission interfaces.

11. The device according to claim 10, characterized in that The signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the signal transmission module includes n1 first bridges and n1 second bridges; each of the first bridges includes n2 first transmission interfaces, and each of the second bridges includes n2 second transmission interfaces, and each of the first bridges is connected to any one of the multiple second bridges; wherein n1×n2 equals n.

12. A phase correction method, characterized in that: The method is applied to a radio frequency module, the radio frequency module includes a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to a signal transmission module, the signal transmission module is also connected to at least one antenna interface, and the method includes: Sending a first radio frequency signal through the multiple radio frequency interfaces; Receive a first radio frequency signal looped back by the signal transmission module; wherein the first radio frequency signal is transmitted to the at least one antenna interface by the signal transmission module, and is looped back to the radio frequency module at the at least one antenna interface; Based on the first radio frequency signal transmitted in the loopback, the phases of the signals sent by the multiple radio frequency interfaces are corrected.

13. The method according to claim 12, characterized in that The signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the at least one antenna interface; The signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces, the multiple first transmission interfaces are connected to the multiple radio frequency interfaces in a one-to-one correspondence, the multiple second transmission interfaces are connected to the multiple antenna interfaces in a one-to-one correspondence, and each of the first transmission interfaces is interconnected with any one of the second transmission interfaces among the multiple second transmission interfaces.

14. The method according to claim 13, characterized in that The signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the signal transmission module includes n1 first bridges and n1 second bridges; each of the first bridges includes n2 first transmission interfaces, and each of the second bridges includes n2 second transmission interfaces, and each of the first bridges is connected to any one of the n1 second bridges; wherein n1×n2 equals n.

15. The method according to claim 13 or 14, characterized in that The signal transmission module further includes a first switch, wherein the first switch is arranged between a first antenna interface and the second transmission interface correspondingly connected to the first antenna interface; the first antenna interface is any one of the at least one antenna interface; The receiving the first radio frequency signal looped back by the signal transmission module includes: The first radio frequency signal is received by the signal transmission module at the first antenna interface and transmitted back through the first switched-off switch loopback.

16. The method according to claim 15, characterized in that The RF module controls the first switch to be turned off, and the sending of the first RF signal through the multiple RF interfaces includes: When a first RF interface among the multiple RF interfaces is used to receive a signal, the RF module sends a second RF signal through multiple second RF interfaces; the first RF interface is any one of the multiple RF interfaces, and the second RF interface is the remaining RF interfaces among the multiple RF interfaces except the first RF interface; The second radio frequency signal transmitted back by the signal transmission module at the first antenna interface through the turned-off first switch loopback is received through the first radio frequency interface.

17. The method according to claim 16, characterized in that The sending of the first RF signal through the multiple RF interfaces also includes: the RF module sending a third RF signal through the first RF interface and a third RF interface; the third RF interface is any one of the multiple second RF interfaces; The third RF signal transmitted back by the signal transmission module at the first antenna interface through the turned-off first switch loopback is received through the fourth RF interface of the RF module, and the fourth RF interface is any one of the multiple second RF interfaces except the third RF interface.

18. The method according to claim 13 or 14, characterized in that The signal transmission module also includes a second switch and a third switch; the second switch is arranged between the second antenna interface and the second transmission interface correspondingly connected to the second antenna interface; the second antenna interface is any one of the at least one antenna interface; the third switch is arranged between the fifth radio frequency interface and the first transmission interface correspondingly connected to the fifth radio frequency interface; the fifth radio frequency interface is any one of the multiple radio frequency interfaces; Control the second switch and the third switch to be turned on, so that the first end of the second switch is connected to the first end of the first conductive path, and the first end of the third switch is connected to the second end of the first conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the third switch is also connected to the fifth radio frequency interface; The receiving the first radio frequency signal looped back by the signal transmission module includes: receiving, through the fifth radio frequency interface, a fourth radio frequency signal transmitted back by the signal transmission module at the second antenna interface through the first conductive path; The fourth RF signal is a RF signal sent by a plurality of sixth RF interfaces, and the plurality of sixth RF interfaces are the remaining RF interfaces among the plurality of RF interfaces except the fifth RF interface.

19. The method according to claim 18, characterized in that The signal transmission module further includes a fourth switch, wherein the fourth switch is arranged between a seventh RF interface and the first transmission interface correspondingly connected to the seventh RF interface; the seventh RF interface is any one of the plurality of sixth RF interfaces; Control the second switch and the fourth switch to be turned on, so that the first end of the second switch is connected to the first end of the second conductive path, and the first end of the fourth switch is connected to the second end of the second conductive path; the second end of the second switch is also connected to the second transmission interface corresponding to the second antenna interface, and the second end of the fourth switch is also connected to the seventh radio frequency interface; The receiving the first radio frequency signal looped back by the signal transmission module includes: receiving, through the seventh RF interface, a fifth RF signal that is looped back and transmitted by the signal transmission module at the second antenna interface through the second switch that is turned on by the fourth switch; The fifth RF signal is a RF signal sent by the fifth RF interface and an eighth RF interface, and the eighth RF interface is any one of the multiple RF interfaces except the seventh RF interface.

20. A phase correction method, the method being applied to a radio frequency module, the radio frequency module comprising a plurality of radio frequency interfaces, the plurality of radio frequency interfaces being connected to a signal transmission module, the signal transmission module being further connected to a first antenna interface, the first antenna interface being further connected to a signal transmission module; the method comprising: Receiving the radio frequency signal transmitted by the signal transmission module through the multiple radio frequency interfaces; wherein the radio frequency signal is sent by the signal transmission module through the first antenna interface and transmitted to the multiple radio frequency interfaces by the signal transmission module; Based on the radio frequency signals received by the multiple radio frequency interfaces, phases of the signals received by the multiple radio frequency interfaces are corrected.

21. The method according to claim 20, characterized in that The signal transmission module is connected to a plurality of antenna interfaces; the plurality of antenna interfaces include the first antenna interface; The signal transmission module includes multiple first transmission interfaces and multiple second transmission interfaces, the multiple first transmission interfaces are connected to the multiple radio frequency interfaces in a one-to-one correspondence, the multiple second transmission interfaces are connected to the multiple antenna interfaces in a one-to-one correspondence, and each of the first transmission interfaces is interconnected with any one of the second transmission interfaces among the multiple second transmission interfaces.

22. The method according to claim 21, characterized in that The signal transmission module includes n first transmission interfaces and n second transmission interfaces, and the signal transmission module includes n1 first bridges and n1 second bridges; each of the first bridges includes n2 first transmission interfaces, and each of the second bridges includes n2 second transmission interfaces, and each of the first bridges is connected to any one of the multiple second bridges; wherein n1×n2 equals n.

23. A communication device, characterized in that: The system comprises a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the system executes the method according to any one of claims 12 to 19.

24. A communication device, characterized in that: The system comprises a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the system executes the method according to any one of claims 20 to 22.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or computer instructions, and the computer program or computer instructions are executed by a processor to implement the method according to any one of claims 12 to 19; Alternatively, the computer program or computer instructions are executed by a processor to implement the method according to any one of claims 20 to 22.

26. A computer program product, characterized in that When the computer program product is executed by a processor, the method described in any one of claims 12 to 19 will be implemented; Alternatively, when the computer program product is executed by a processor, the method described in any one of claims 20 to 22 will be implemented.

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