Communication device and method for processing received signal

Abstract

The present application relates to the technical field of communications, and provides a communication device and a method for processing a received signal. The device comprises: a first channel, which is connected to a first filter, and is used for receiving a first signal from the first filter and outputting a second signal, wherein the first signal is a signal output once the first filter processes a received signal, and the first channel comprises at least one filter; a second channel, which is connected to the first filter, and is used for receiving a third signal from the first filter and outputting a fourth signal, wherein the third signal is a signal obtained once the first signal is attenuated; and a denoising module, which is connected to the first channel and the second channel, and is used for receiving the second signal and the fourth signal, and denoising the second signal on the basis of the fourth signal. The method can reduce the impact of interference signals on the sensitivity and the uplink coverage of receivers.

Description

Communication device and method for processing received signal

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on October 27, 2023, with application number 202311414914.8 and application name “A communication device and a method for processing received signals”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication device and a method for processing received signals. Background Art

[0003] Frequency division duplexing (FDD) is a duplexing mode commonly used in long-term evolution (LTE) systems. In other words, a system communicating using FDD is also called an FDD system. In FDD systems, reception and transmission occur on two separate, symmetrical frequency channels, separated by a guard band. The receiving channel of an FDD system is often affected by various interference signals, such as downlink signals and neighboring station transmissions. Current FDD systems typically use an uplink duplexer to suppress uplink out-of-band interference signals. However, if the uplink duplexer's suppression is insufficient, the leaked interference signal may generate nonlinear intermodulation components in the receiving link (or uplink) components. These nonlinear intermodulation components fall within the receiving band, affecting receiver sensitivity and uplink coverage. Therefore, reducing the impact of interference signals on receiver sensitivity and uplink coverage is a pressing technical issue.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a communication device, a method for processing received signals, and a computer-readable storage medium to reduce the impact of interference signals on receiver sensitivity and uplink coverage. The embodiments of the present application provide the following technical solutions:

[0006] In a first aspect, a communication device is provided, which includes: a first channel, connected to a first filter, for receiving a first signal from the first filter and outputting a second signal, where the first signal is a signal output by the first filter after processing the received signal, and the first channel includes at least one filter; a second channel, connected to the first filter, for receiving a third signal from the first filter and outputting a fourth signal, where the third signal is a signal obtained after attenuation processing of the first signal; a denoising module, connected to the first channel and the second channel, for receiving the second signal and the fourth signal, and denoising the second signal according to the fourth signal.

[0007] In the traditional denoising algorithm scheme, the communication device obtains an interference signal (for example, a downlink signal or a neighboring station interference signal) from inside the system through a first channel, which not only consumes a large amount of computing resources, but also fails to fully obtain the neighboring station interference signal, thereby affecting the modeling performance and receiver sensitivity. The present application obtains all interference signals (for example, a third signal) generated by the excitation nonlinear component through a newly added second channel, without obtaining the interference signal from inside the system, which can not only reduce the consumption of computing resources for obtaining the interference signal, but also simplify the process of obtaining the interference signal; in addition, the second channel outputs a fourth signal according to the third signal, and the denoising module performs modeling according to the fourth signal (for example, modeling estimates the nonlinear intermodulation component generated by the interference signal) to denoise the second signal (for example, the denoising module cancels the nonlinear intermodulation component generated by the interference signal in the second signal on the device of the first channel), thereby reducing the interference signal on the sensitivity of the receiver and the impact of the uplink coverage.

[0008] In a possible implementation, the second channel includes a first coupler and a second coupler, the first coupler is connected to the output end of the first filter and the input end of the second coupler, and the second coupler is connected to the output end of the first coupler and the output end of the first channel.

[0009] In some cases, the second channel first couples out all interference signals (for example, the third signal) generated by the excitation nonlinear components from the first signal at one time through the first coupler, and then couples the coupled third signal back to the output end of the first channel in the form of a fourth signal through the second coupler. This can not only avoid the large amount of resources consumed in obtaining interference signals in traditional denoising algorithm solutions, but also simplify the modeling process of the interference signal by the denoising module.

[0010] In a possible implementation, the second channel further includes a first attenuator, and the first attenuator is connected to the output end of the first coupler and the input end of the second coupler.

[0011] In some cases, a first attenuator is added to the second channel to reduce the power of the third signal acquired by the second channel to prevent the third signal with excessive power from interfering with the signal on the first channel (eg, the second signal).

[0012] In one possible implementation, at least one filter includes a second filter and a third filter, the input end of the second filter is connected to the output end of the first filter, and the output end of the third filter is connected to the input end of the denoising module; the second channel also includes a third coupler and a fourth coupler, the third coupler is connected to the output end of the first coupler and the output end of the second filter, and the fourth coupler is connected to the input end of the third filter and the input end of the second coupler.

[0013] In some embodiments, by adding multiple couplers (e.g., a third coupler and a fourth coupler) in the second channel, an interference signal (e.g., a fourth signal, etc.) that is not affected by the out-of-band zero point of the filter on the first channel (e.g., the second filter and the third filter) can be obtained. Finally, the denoising module models the interference signal through the fourth signal, which can effectively cancel the nonlinear component of the interference signal in the second signal on the device of the first channel.

[0014] In one possible implementation, the second channel further includes a second attenuator and a third attenuator, wherein the second attenuator is connected to the output end of the first coupler and the input end of the third coupler; and the third attenuator is connected to the output end of the fourth coupler and the input end of the second coupler.

[0015] In some embodiments, a second attenuator and a third attenuator are added to the second channel to reduce the power of the interference signal (e.g., the third signal) obtained by the second channel, so as to avoid the interference signal received by the second channel having excessive power, thereby affecting the output of the second signal on the first channel.

[0016] In a possible implementation, the input end of the second filter is connected to the output end of the first filter, including: the input end of the second filter is connected to the output end of the first filter through a low noise amplifier LNA; the input end of the first coupler is connected to the input end of the low noise amplifier LNA.

[0017] In some cases, the input end of the first coupler is connected to the input end of the low-noise amplifier LNA, that is, the input end of the first coupler is connected to the input end of the first-stage low-linearity device (for example, the low-noise amplifier LNA) of the first channel, which is conducive to directly obtaining the original signal that causes the device on the first channel to generate intermodulation, greatly improving modeling performance and efficiency.

[0018] In a possible implementation, the denoising module is connected to the first channel and the second channel, including: the denoising module is connected to the first channel and the second channel via an analog-to-digital converter ADC.

[0019] In some embodiments, the leaked interference signal is coupled back to the first channel through the second channel, and the second channel and the first channel share the same analog-to-digital converter ADC, which can reduce device cost.

[0020] In a possible implementation, the first filter is a duplexer.

[0021] In a possible implementation, the received signal is a signal received through an antenna.

[0022] In one possible implementation, the apparatus is a network device.

[0023] In a second aspect, a method for processing a received signal, a communication device, and a computer-readable storage medium are provided, which are applied to any device in the first aspect. The method includes: processing a first signal through a first channel and outputting a second signal, where the first signal is a signal output after the first filter processes the received signal; processing a third signal through a second channel and outputting a fourth signal, where the third signal is a signal obtained after attenuation processing of the first signal; processing the second signal through a denoising module, wherein the denoising module is used to denoise the second signal according to the fourth signal.

[0024] Compared with the traditional algorithm scheme, the communication device models the interference signal obtained from the system (for example, the downlink signal or the neighboring station interference signal) to perform denoising on the second signal, which not only consumes a lot of resources and has poor modeling performance, but also affects the sensitivity of the receiver; the present application obtains all interference signals (for example, the third signal) generated by the excitation nonlinear component through the second channel, which can not only reduce the resource consumption of obtaining the interference signal, but also obtain relatively comprehensive leaked interference signals (for example, the fourth signal); the denoising module models the fourth signal output by the second channel (for example, the model estimates the nonlinear component generated by the interference signal) to perform denoising on the second signal (for example, to cancel the nonlinear component of the interference signal in the second signal generated on the first channel), which not only has high modeling efficiency, but also can reduce the impact of the interference signal on the sensitivity of the receiver and the uplink coverage.

[0025] In a third aspect, a communication device is provided. The communication device may be a network device (e.g., a base station), or may be executed by a module (e.g., a processor, a chip, or a chip system) applied to the network device, or may be a logical node, a logical module, or software that can implement all or part of the network device functions. The communication device includes a processor and, optionally, a memory. The memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions in the memory; when the processor executes the computer program or instructions stored in the memory, the communication device executes the method performed by the network device in the above method embodiment.

[0026] In a fourth aspect, a computer program product is provided, the computer program product comprising: a computer program code, which, when executed, causes the method performed by the network device in the above aspects to be executed.

[0027] In a fifth aspect, the present application provides a chip system comprising a processor for implementing the network device functions described in the aforementioned methods. In one possible design, the chip system further comprises a memory for storing program instructions and / or data. The chip system may be comprised solely of a chip or may include a chip and other discrete components.

[0028] In a sixth aspect, the present application provides a computer-readable storage medium, which includes a computer program or instructions. When the computer program or instructions are executed, the methods performed by the network device in the above aspects are implemented.

[0029] In a seventh aspect, an embodiment of the present application provides a communication system, comprising: a communication device according to any one of the above-mentioned first aspects.

[0030] Any of the devices or computer storage media or computer program products or chips or communication systems provided above can be used to execute the method provided in the second aspect. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding scheme in the corresponding method provided above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic diagram of a possible, non-limiting communication system provided in an embodiment of the present application;

[0032] FIG2 is a schematic diagram of a network structure of a communication system provided in an embodiment of the present application;

[0033] FIG3 is a schematic diagram of a structure of communication between a network device and a terminal device provided in an embodiment of the present application;

[0034] FIG4 is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application;

[0035] FIG5 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0036] FIG6 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0037] FIG7 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0038] FIG8 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0039] FIG9 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0040] FIG10 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0041] FIG11 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0042] FIG12 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0043] FIG13 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0044] FIG14 is a schematic structural diagram of another communication device 400 provided in an embodiment of the present application;

[0045] FIG15 is an interactive diagram of a method for processing a received signal provided in an embodiment of the present application;

[0046] FIG16 is a schematic structural diagram of a communication device 1600 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0048] In the description of the present application, "at least one of the following items" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, a and b and c, wherein a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit quantity and execution order, and words such as "first" and "second" do not limit necessarily different.

[0049] It should be understood that, in this application, “in case of”, “if”, “when”, “if” and similar expressions can be used interchangeably.

[0050] It should be noted that, in this application, words such as "exemplarily" or "for example" are used to indicate giving an example, illustration, or explanation. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being a preferred implementation over other embodiments or designs. The use of words such as "exemplarily" or "for example" in this application is intended to present the relevant concepts in a concrete manner.

[0051] The technical solutions of the embodiments of the present application can be applied to various communication systems, including long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) mobile communication systems or new radio access technologies (NR). The technical solutions provided in the present application can also be applied to future communication systems, such as sixth generation (6G) mobile communication systems.

[0052] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0053] Figure 1 shows a possible, non-limiting schematic diagram of a communication system. As shown in Figure 1, the communication system 100 includes at least one network device (such as 110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal device (such as 120a-120c in Figure 1, collectively referred to as 120). Among them, the network device 110 can also be called a radio access network (RAN) node or radio access network device, which is used to help terminal devices achieve wireless access; the network device 110 can be a base station, and the base station can broadly cover various names as follows, or be replaced with the following names, such as: node B (NodeB), evolved NodeB (eNB), next generation NodeB (gNB), next generation evolved NodeB (ng-eNB), relay station, access point, transmission point (TRP), transmitting point (TP), master eNodeB (MeNB), secondary eNodeB (SeNB), multi standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP) in wireless fidelity (WIFI) system, transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), etc. unit (RRU), active antenna unit (AAU), remote radio head (RRH), etc. The base station can be a macro base station, a micro base station, a pico base station, a small station, a relay station, a balloon station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, a modem or a chip for being set in the aforementioned device or apparatus. The base station can also be a network side device in a 6G network, a device that assumes the function of a base station in a future communication system, etc. The base station can support networks with the same or different access technologies. The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or a drone can be configured to be used as a device for communicating with another base station. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0054] In a network structure of a communication system, as shown in FIG2 , the network device 110 may be a wireless access device including a centralized unit (CU) node, a distributed unit (DU) node, or a CU node and a DU node. The wireless access device including the CU node and the DU node splits the protocol layer of the gNB in ​​the NR system, centrally controls some protocol layer functions in the CU, and distributes some or all of the remaining protocol layer functions in the DU, which is centrally controlled by the CU. Optionally, as shown in FIG2 , the CU may also be divided into a control plane central node (central unit-control plane, CU-CP) and a user plane central node (central unit-user plane, CU-UP). The CU-CP is responsible for control plane functions, mainly including RRC and the packet data convergence protocol (PDCP) corresponding to the control plane, namely PDCP-C. PDCP-C is mainly responsible for encryption and decryption, integrity protection, and data transmission of control plane data. The CU-UP is responsible for user plane functions, mainly including the service data adaptation protocol (SDAP) and the PDCP corresponding to the user plane (i.e., PDCP-U). SDAP is primarily responsible for processing data within the core network and mapping flows to bearers. PDCP-U is primarily responsible for data plane encryption and decryption, integrity protection, header compression, sequence number maintenance, and data transmission. The CU-CP and CU-UP are connected via the E1 interface. The CU-CP represents the gNB's connection to the core network via the NG interface. It connects to the DU via the F1 control plane, or F1-C. The CU-UP connects to the DU via the F1 user plane, or F1-U. Alternatively, PDCP-C may also reside in the CU-UP.

[0055] In an optional embodiment, the communication system 100 shown in Figure 1 may further include: a core network device (not shown in Figure 1). The core network device refers to a device in the core network (CN) that provides service support for the terminal device 120. For example, the core network device may be: an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, etc., which are not listed here one by one. Among them, the AMF entity can be responsible for access management and mobility management of the terminal device 120; the SMF entity can be responsible for session management, such as user session establishment; the UPF entity can be a functional entity of the user plane, mainly responsible for connecting to the external network. It should be noted that in this application, the entity may also be referred to as a network element or a functional entity. For example, the AMF entity may also be referred to as an AMF network element or an AMF functional entity. For another example, the SMF entity may also be referred to as an SMF network element or an SMF functional entity.

[0056] The terminal device 120 is a device with wireless transceiver capabilities that can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, balloon, and satellite). The embodiments of the present application do not limit the scenario in which the terminal device is located.

[0057] The terminal device 120 may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wireless modem, a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, and may also be a wireless terminal used in scenarios such as virtual reality (VR), augmented reality (AR), industrial control (industrial control), self-driving, remote medical, smart grid, transportation safety, smart city, and smart home. In this application, the aforementioned terminal devices and chips applicable to the aforementioned terminal devices are collectively referred to as terminal devices. It should be understood that the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0058] As an example, communication between a network device (e.g., 110a) and a terminal device (e.g., 120a) in the communication system 100 shown in FIG1 can be performed in the form shown in FIG3. As shown in FIG3, the terminal device includes a processor 101, a memory 102, and a transceiver 103. The transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The network device includes a processor 201, a memory 202, and a transceiver 203. The transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be configured to receive transmission control information via the antenna 1033, and the transmitter 1031 can be configured to send transmission feedback information to the network device via the antenna 1033. The transmitter 2031 can be configured to send transmission control information to the terminal device via the antenna 2033, and the receiver 2032 can be configured to receive transmission feedback information sent by the terminal device via the antenna 2033.

[0059] As described in the background technology, in some scenarios, due to the narrow spacing between the downlink signal transmission band and the uplink signal reception band, if the filter (e.g., duplexer) has insufficient suppression, the leaked interference signal may generate nonlinear intermodulation components in the receiving link (or uplink) device. These nonlinear intermodulation components fall within the receiving band, affecting the receiver's sensitivity and uplink coverage. For example, the uplink signal receiving band (band 1) RX band is 1920-1980 MHz and will be interfered with by the downlink signal transmission band (1885-1915 MHz). Since the downlink signal transmission band and RX band are only 5 MHz apart, if the filter (e.g., duplexer) has insufficient suppression, the transmission band will interfere with the RX band. For another example, the band (band 2) RX band is 703-748 MHz and will be interfered with by the adjacent 690-698 MHz digital television (DTV) downlink signal. Therefore, how to reduce the impact of interference signals on receiver sensitivity and uplink coverage is a technical problem that needs to be solved urgently. To this end, the present application provides a communication device that can reduce the impact of interference signals on receiver sensitivity and uplink coverage.

[0060] The following describes a communication device 400 (hereinafter referred to as device 400 ) provided by the present application in conjunction with an embodiment, as shown in FIG4 . The device 400 includes:

[0061] a first channel connected to the first filter, configured to receive a first signal from the first filter and output a second signal, wherein the first signal is a signal output by the first filter after processing the received signal, and the first channel includes at least one filter;

[0062] a second channel connected to the first filter, configured to receive a third signal from the first filter and output a fourth signal, wherein the third signal is a signal obtained by attenuating the first signal;

[0063] The denoising module is connected to the first channel and the second channel, and is configured to receive the second signal and the fourth signal, and perform denoising processing on the second signal according to the fourth signal.

[0064] It should be noted that the communication device 400 may be the network device 110a in FIG. 1 or the network device 110b in FIG. 1 .

[0065] In one example, the various components of device 400 can be connected in the manner shown in FIG4 ; for example, the output of the first filter is connected to the input of the first channel, the input of the second channel is connected to the input of the first channel, the first channel is connected to the denoising module, and the second channel is also connected to the denoising module; optionally, the first channel and the second channel can be connected to the denoising module via the same analog-to-digital converter (ADC). It should be noted that device 400 can also have other connection methods, which can be referred to the detailed description of the embodiments below and will not be repeated here.

[0066] The first filter may be a duplexer or a semiconductor filter, which is not limited in this application.

[0067] The first filter performs denoising processing on the received signal to obtain a first signal; wherein the first signal includes an interference leakage signal.

[0068] The received signal may be a service signal containing interference. For example, the network device may receive some service signals from the terminal device; the received signal may be received by an antenna.

[0069] In one possible implementation, the received signal is a signal received by an antenna. In addition to receiving service signals, the antenna can also receive some interference signals existing in space. Compared with traditional denoising algorithms that require obtaining internal system signals as a modeling basis for interference signals, which have problems such as high data transmission resource consumption and inability to obtain neighboring station interference signals, the present application directly obtains received signals containing interference (e.g., neighboring station interference signals) through the antenna, reducing the cost of obtaining interference signals.

[0070] The first channel includes at least one filter, wherein the filter may be a semiconductor filter, such as a surface acoustic wave (SAW) filter and / or a bulk acoustic wave (BAW) filter.

[0071] In an optional implementation, the first channel may further include at least one low noise amplifier (LNA); for example, the filter and the low noise amplifier included in the first channel may appear alternately and be connected in cascade. Please refer to the following embodiments and will not be repeated here.

[0072] The above-mentioned second channel can be a coupling channel, which is used to couple a part of the signal from the signal output by the first filter (for example, the first signal); the coupling channel includes at least one coupler; the coupler couples a third signal from the output end of the first filter; the third signal is a signal obtained after the first signal is attenuated; because the coupler couples a part of the full-band signal from the first signal, that is, the coupler obtains part of the power from the first signal, therefore, the third signal can be understood as the attenuation processing of the first signal by the coupler in the coupling channel.

[0073] In an optional implementation, the second channel may further include: at least one attenuator; in order to reduce the interference of the third signal coupled out by the second channel on the signal transmitted on the first channel, the second channel may attenuate the power of the third signal by adding an attenuator to reduce the interference of the third signal on the signal transmitted on the first channel.

[0074] As an example, the attenuator and the coupler of the second channel may be connected in a cascade manner.

[0075] After the second channel couples (or receives or obtains) the third signal from the first signal output by the first filter, it attenuates the third signal and outputs a fourth signal; the fourth signal is input to the denoising module for the denoising module to establish an interference signal model.

[0076] After receiving the first signal, the first channel filters and processes the first signal and outputs a second signal. The second signal is also input into the denoising module. The denoising module estimates the nonlinear intermodulation components generated by the fourth signal on the device of the first channel based on the interference signal model established by the fourth signal. The denoising module can also be called an interference cancellation module.

[0077] In a possible implementation, the denoising module is connected to the first channel and the second channel, including: the denoising module is connected to the first channel and the second channel via an analog-to-digital converter ADC.

[0078] In one example, the output end of the first channel is connected to the output end of the second channel, and the input end of the denoising module is connected to the output end of the first channel; wherein, the second signal output by the first channel is mixed with the fourth signal output by the second channel to obtain a mixed signal; the first channel inputs the mixed signal to the denoising module through the ADC.

[0079] In this embodiment, the leaked interference signal (for example, the fourth signal) is coupled back to the first channel through the second channel, and the second channel and the first channel share the same ADC, which can reduce device cost.

[0080] It should be noted that the second signal and the fourth signal can be input to the denoising module through an ADC respectively, or can share an ADC input denoising module. This application does not limit this. Please refer to the embodiments below and will not repeat them here.

[0081] The above-mentioned denoising module denoises the second signal according to the fourth signal, which can be understood as: the denoising module cancels the nonlinear intermodulation components generated by the interference signal in the second signal on the device of the first channel based on the nonlinear intermodulation components estimated by modeling the fourth signal.

[0082] It can be seen that in the traditional denoising algorithm scheme, the communication device obtains an interference signal (for example, a downlink signal or a neighboring station interference signal) from inside the system through the first channel, which not only consumes a large amount of computing resources, but also cannot fully obtain the neighboring station interference signal, thereby affecting the modeling performance and receiver sensitivity. The present application obtains all interference signals (for example, a third signal) generated by the excitation nonlinear component through a newly added second channel, without obtaining the interference signal from inside the system, which can not only reduce the consumption of computing resources for obtaining the interference signal, but also simplify the process of obtaining the interference signal; in addition, the second channel outputs a fourth signal according to the third signal, and the denoising module performs modeling according to the fourth signal (for example, modeling estimates the nonlinear intermodulation component generated by the interference signal) to denoise the second signal (for example, the denoising module cancels the nonlinear intermodulation component generated by the interference signal in the second signal on the device of the first channel), thereby reducing the interference signal on the sensitivity of the receiver and the impact of the uplink coverage.

[0083] Figure 5 shows another connection method of the device 400, wherein the second channel includes a first coupler and a second coupler, the first coupler is connected to the output end of the first filter and the input end of the second coupler respectively, and the second coupler is connected to the output end of the first coupler and the output end of the first channel respectively.

[0084] The above-mentioned first coupler will couple a signal with partial power from the first signal, that is, the third signal; the third signal outputs a fourth signal through the second coupler; the second coupler couples the fourth signal to the output end of the first channel; the second signal and the fourth signal can be input into the denoising module through an ADC respectively (not shown in Figure 5); optionally, the second signal and the fourth signal can share an ADC and be input into the denoising module through the ADC (as shown in Figure 5).

[0085] In some cases, the second channel first couples out all interference signals (for example, the third signal) generated by the excitation nonlinear components from the first signal at one time through the first coupler, and then couples the coupled third signal back to the output end of the first channel in the form of a fourth signal through the second coupler. This can not only avoid the large amount of resources consumed in obtaining interference signals in traditional denoising algorithm solutions, but also simplify the modeling process of the interference signal by the denoising module.

[0086] In a possible implementation, the second channel further includes a first attenuator, and the first attenuator is connected to the output end of the first coupler and the input end of the second coupler.

[0087] The first attenuator is used to attenuate the power of the third signal coupled out by the first coupler to prevent the third signal from interfering with the signal in the first channel.

[0088] In one example, as shown in Figure 6, the input end of the first coupler is connected to the output end of the first filter; the output end of the first coupler is connected to the input end of the first attenuator; the output end of the first attenuator is connected to the input end of the second coupler; the output end of the second coupler is connected to the output end of the first channel; wherein, the first channel filters and processes the received first signal and outputs a second signal; the first coupler couples out a partial power interference signal (for example, a third signal) from the first signal; the first attenuator attenuates the partial power interference signal output by the first coupler and outputs an attenuated interference signal; the second coupler receives the attenuated interference signal, couples the attenuated interference signal, and outputs a fourth signal; the second signal and the fourth signal can be respectively input into the denoising module through an ADC (not shown in Figure 6); optionally, the second signal and the fourth signal can share an ADC and be input into the denoising module through the ADC (as shown in Figure 6).

[0089] In another example, as shown in Figure 7, at least one filter includes a second filter and a third filter, the input end of the second filter is connected to the output end of the first filter, and the output end of the third filter can be connected to the input end of the denoising module through an ADC; the input end of the first coupler is connected to the output end of the first filter; the output end of the first coupler is connected to the input end of the first attenuator; the output end of the first attenuator is connected to the input end of the second coupler; the output end of the second coupler is connected to the output end of the third filter; wherein, the second filter and the third filter in the first channel filter and process the received first signal in turn, and output a second signal; the first coupler couples out a partial power interference signal (for example, a third signal) from the first signal; the first attenuator attenuates the partial power interference signal output by the first coupler, and outputs the attenuated interference signal; the second coupler receives the attenuated interference signal, couples the attenuated interference signal, and outputs a fourth signal; the second signal and the fourth signal can share an ADC and be input to the denoising module through the ADC.

[0090] In some cases, a first attenuator is added to the second channel to reduce the power of the third signal acquired by the second channel to prevent the third signal with excessive power from interfering with the signal on the first channel (eg, the second signal).

[0091] In one possible implementation, at least one filter includes a second filter and a third filter, the input end of the second filter is connected to the output end of the first filter, and the output end of the third filter is connected to the input end of the denoising module; the second channel also includes a third coupler and a fourth coupler, the third coupler is connected to the output end of the first coupler and the output end of the second filter, and the fourth coupler is connected to the input end of the third filter and the input end of the second coupler.

[0092] The second filter may be a semiconductor filter, such as a SAW filter or a BAW filter; the third filter may also be a semiconductor filter, such as a SAW filter or a BAW filter.

[0093] It should be noted that the types of the second filter and the third filter may be the same or different, and this application does not limit this; for example, the second filter is SAW and the third filter is BAW.

[0094] In one example, the second filter and the third filter are connected to each other in a cascade manner, and the output end of the second filter is connected to the input end of the third filter, as shown in FIG8 .

[0095] In one example, the device 400 can also be implemented through the structure shown in Figure 8; the output end of the antenna is connected to the input end of the first filter; the output end of the first filter is connected to the input end of the second filter; the output end of the second filter is connected to the input end of the third filter; the output end of the third filter is connected to the input end of the ADC; the output end of the ADC is connected to the input end of the denoising module; the input end of the first coupler is connected to the output end of the first filter; the output end of the first coupler is connected to the input end of the third coupler; the output end of the third coupler is connected to the output end of the second filter; the input end of the fourth coupler is connected to the output end of the second filter; the output end of the fourth coupler is connected to the input end of the second coupler; and the output end of the second coupler is connected to the input end of the ADC.

[0096] In the device 400, the device 400 obtains a received signal through an antenna; the first filter processes the received signal and outputs a first signal; the first coupler couples a third signal from the first signal; the third coupler couples the third signal to the output end of the second filter, and at this time, the signal output by the third coupler is a fifth signal; the fifth signal is mixed with the signal output by the second filter to obtain a first mixed signal; the fourth coupler couples a signal with partial power from the first mixed signal to obtain a sixth signal; the sixth signal is output as a fourth signal through the fourth coupler and the second coupler in sequence; the second signal and the fourth signal can be respectively input into the denoising module through an ADC (not shown in Figure 8); optionally, the second signal and the fourth signal can share an ADC and be input into the denoising module through the ADC (as shown in Figure 8).

[0097] In some embodiments, by adding multiple couplers (e.g., a third coupler and a fourth coupler) in the second channel, an interference signal (e.g., a fourth signal, etc.) that is not affected by the out-of-band zero point of the filter on the first channel (e.g., the second filter and the third filter) can be obtained. Finally, the denoising module models the interference signal through the fourth signal, which can effectively cancel the nonlinear component of the interference signal in the second signal on the device of the first channel.

[0098] In one possible implementation, the second channel further includes a second attenuator and a third attenuator, wherein the second attenuator is connected to the output end of the first coupler and the input end of the third coupler; and the third attenuator is connected to the output end of the fourth coupler and the input end of the second coupler.

[0099] The second attenuator may be a resistive attenuation network, such as a pi attenuator or a T-type attenuator; the third attenuator may also be a resistive attenuation network, such as a pi attenuator or a T-type attenuator.

[0100] It should be noted that the types of the second attenuator and the third attenuator may be the same or different, and this application does not limit this; for example, the second attenuator is a pi attenuator, and the third attenuator is a T-type attenuator.

[0101] In one example, the device 400 can also be implemented by the structure shown in Figure 9; the difference between Figure 9 and Figure 8 is that the output end of the first coupler is connected to the input end of the second attenuator, and the output end of the second attenuator is connected to the input end of the third coupler; the output end of the fourth coupler is connected to the input end of the third attenuator; and the output end of the third attenuator is connected to the input end of the second coupler.

[0102] Compared with Figure 8, in the device 400, Figure 9 couples a third signal from the first signal; the second attenuator attenuates the third signal to obtain an attenuated signal; the third coupler couples the attenuated signal to the output end of the second filter, and at this time, the signal output by the third coupler is the seventh signal; the seventh signal is mixed with the signal output by the second filter to obtain a second mixed signal; the fourth coupler couples a signal with partial power from the second mixed signal to obtain an eighth signal; the eighth signal outputs a ninth signal through the fourth coupler (not shown in Figure 9); the ninth signal passes through the third attenuator and outputs a tenth signal (not shown in Figure 9); the tenth signal outputs a fourth signal through the second coupler; the second signal and the fourth signal can be respectively input into the denoising module through an ADC (not shown in Figure 9); optionally, the second signal and the fourth signal can share an ADC and be input into the denoising module through the ADC (as shown in Figure 9).

[0103] In some embodiments, a second attenuator and a third attenuator are added to the second channel to reduce the power of the interference signal (e.g., the third signal) obtained by the second channel, so as to avoid the interference signal received by the second channel having excessive power, thereby affecting the output of the second signal on the first channel.

[0104] In a possible implementation, the input end of the second filter is connected to the output end of the first filter, including: the input end of the second filter is connected to the output end of the first filter through a low noise amplifier LNA; the input end of the first coupler is connected to the input end of the low noise amplifier LNA.

[0105] The LNA is used to amplify the weak signal output by the first filter and reduce noise interference so that the system can demodulate the required information data.

[0106] As an example, as shown in FIG10 , the first channel includes a first LNA, a second filter, a second LNA, and a third filter; the first LNA, the second filter, the second LNA, and the third filter are connected in cascade, wherein the input of the first LNA is connected to the output of the first filter; the output of the first LNA is connected to the input of the second filter; the input of the second LNA is connected to the output of the second filter; the output of the second LNA is connected to the input of the third filter; and the output of the third filter is connected to the input of the denoising module via an ADC. The first coupler, the first attenuator, and the second coupler in the second channel are also connected in cascade. For specific connections, please refer to the description of the relevant embodiments above and will not be repeated here.

[0107] In the device 400 shown in FIG10 , the signal flow of the second channel can refer to the relevant description of the signal flow of the second channel in the device 400 shown in FIG6 , and will not be repeated here. The first LNA receives the first signal from the output end of the first filter and amplifies the first signal for the first time to obtain a first amplified signal. The second filter receives the first amplified signal from the first LNA and filters the first amplified signal for the first time to obtain a first filtered signal. The second LNA receives the first filtered signal from the second filter and amplifies the first filtered signal for the second time to obtain a second amplified signal. The third filter receives the second amplified signal from the second LNA and filters the second amplified signal for the second time to obtain a second filtered signal (i.e., the second signal). The second signal and the fourth signal can be input into the denoising module via respective ADCs (not shown in FIG10 ). Optionally, the second signal and the fourth signal can share a common ADC and be input into the denoising module via the ADC (as shown in FIG10 ).

[0108] In another example, as shown in Figure 11, the connection order of the LNA and filter in the second channel is opposite to that shown in Figure 10. In this case, the input of the first coupler in the first channel is connected to the output of the first filter, and the output of the second coupler is connected to the output of the second LNA. The first signal passes through the second filter, the first LNA, the third filter, and the second LNA in sequence to output the second signal. The second and fourth signals are input to the denoising module through the same ADC.

[0109] In another example, as shown in FIG12 , in the device 400, the first channel includes a third LNA and a fourth filter, wherein the input end of the third LNA is connected to the output end of the first filter; and the output end of the third LNA is connected to the input end of the fourth filter. The difference between FIG12 and the device 400 shown in FIG10 is that the structure of the first channel is different, wherein the third LNA receives the first signal from the output end of the first filter and amplifies the first signal to obtain an amplified signal; the fourth filter filters the amplified signal to obtain a second signal; the second signal and the fourth signal can share an ADC and be input into the denoising module through the ADC.

[0110] In another example, as shown in FIG13 , in the device 400, the first channel includes a fourth LNA and a fifth filter, and the second channel includes a fifth coupler and a fourth attenuator, wherein the input end of the fourth LNA is connected to the output end of the first filter; the output end of the fourth LNA is connected to the input end of the fifth filter; the output end of the fifth filter is connected to the input end of the denoising module through ADC1; the input end of the fifth coupler is connected to the output end of the first filter; the output end of the fifth coupler is connected to the input end of the fourth attenuator; the output end of the fourth attenuator is connected to the input end of the denoising module through ADC2; wherein the first signal sequentially passes through the fourth LNA and the fifth filter to output the second signal; the second signal is input to the denoising module through ADC1; the third signal sequentially passes through the fifth coupler and the fourth attenuator to output the fourth signal; and the fourth signal is input to the denoising module through ADC2.

[0111] In another example, as shown in FIG14 , the second channel includes a sixth coupler and a seventh coupler, and the sixth coupler and the seventh coupler are connected in cascade, wherein the input end of the sixth coupler can be connected to the output end of the fourth LNA, and the output end of the seventh coupler is connected to the output end of the fifth filter; the third signal sequentially passes through the sixth coupler and the seventh coupler to output the fourth signal; the first signal sequentially passes through the fourth LNA and the fifth filter to output the second signal; and the second signal and the fourth signal share an ADC input to the denoising module.

[0112] In some cases, the input end of the first coupler is connected to the input end of the low-noise amplifier LNA, that is, the input end of the first coupler is connected to the input end of the first-stage low-linearity device (for example, the low-noise amplifier LNA) of the first channel, which is conducive to directly obtaining the original signal that causes the device on the first channel to generate intermodulation, greatly improving modeling performance and efficiency.

[0113] It should be noted that the connection mentioned in this article can be a direct connection or an indirect connection. For example, other devices (such as LNA) can exist between the two filters, and this application does not limit this.

[0114] After introducing the above-mentioned communication device 400, the present application also provides a method 1500 for processing a received signal, as shown in Figure 15, which is applied to the above-mentioned device 400 and the above-mentioned possible implementation method. The method 1500 can be executed by the device 400, and the device 400 can be a network device. For example, the network device can be the base station 110a or 110b in Figure 1; it should be noted that the network device can also be a chip, chip system, or processor applied to the network device, or it can be a logical node, logic module or software that can realize all or part of the functions of the network device.

[0115] The method 1500 includes:

[0116] S1501: A network device processes a first signal through a first channel and outputs a second signal, where the first signal is a signal output after a first filter processes a received signal.

[0117] For the description of the first filter, reference may be made to the relevant description of the apparatus 400 above and will not be repeated here. The first channel includes at least one filter. In an optional implementation, the first channel further includes at least one LNA. When the first channel includes a filter and an LNA, the filter and the LNA may appear alternately in pairs, as shown in FIG10 or FIG11 , or may appear unpaired, which is not limited in this application.

[0118] For example, as shown in Figure 4, device 400 is a network device. The network device obtains a received signal through an antenna and sends the received signal to a first filter (for example, a duplexer). The first filter filters the received signal to obtain a first signal; the first filter inputs the first signal to a first channel; the first channel processes the first signal (for example, filtering, amplifying, etc.) and outputs a second signal.

[0119] S1502: The network device processes a third signal through a second channel and outputs a fourth signal. The third signal is a signal obtained by attenuating the first signal.

[0120] The description of the third signal can be found in the description of apparatus 400 above and will not be repeated here. The second channel includes at least one coupler. In one possible implementation, the second channel also includes at least one attenuator. The description of the coupler and attenuator can be found in the above embodiment and will not be repeated here.

[0121] For example, as shown in Figure 6, the device 400 is a network device, the second channel includes a first coupler, a first attenuator and a second coupler, and the network device couples a third signal from the first signal through the first coupler in the second channel; the third signal passes through the first attenuator and the second coupler in sequence to output a fourth signal; the second signal and the fourth signal output by the first channel can be input to the denoising module through the same ADC, or can be input to the denoising module through different ADCs respectively (for example, the device 400 shown in Figure 13).

[0122] S1503: The network device processes the second signal through a denoising module, wherein the denoising module is used by the network device to perform denoising on the second signal according to the fourth signal.

[0123] In one example, the first channel outputs a second signal, the second channel outputs a fourth signal, and the second signal and the fourth signal are input to a denoising module through the same ADC; the denoising module estimates the nonlinear intermodulation components generated by the fourth signal on the device of the first channel based on the interference signal model established by the fourth signal; the denoising module removes the nonlinear intermodulation components generated by the interference signal in the second signal on the device of the first channel based on the estimated nonlinear intermodulation components.

[0124] Compared with the traditional algorithm scheme, the communication device models the interference signal obtained from the system (for example, the downlink signal or the neighboring station interference signal) to perform denoising on the second signal, which not only consumes a lot of resources and has poor modeling performance, but also affects the sensitivity of the receiver; the present application obtains all interference signals (for example, the third signal) generated by the excitation nonlinear component through the second channel, which can not only reduce the resource consumption of obtaining the interference signal, but also obtain relatively comprehensive leaked interference signals (for example, the fourth signal); the denoising module models the fourth signal output by the second channel (for example, the model estimates the nonlinear component generated by the interference signal) to perform denoising on the second signal (for example, to cancel the nonlinear component of the interference signal in the second signal generated on the first channel), which not only has high modeling efficiency, but also can reduce the impact of the interference signal on the sensitivity of the receiver and the uplink coverage.

[0125] As shown in Figure 16, the present application provides a schematic structural diagram of another communication device 1600. In one possible implementation, the communication device 1600 may be a network device (e.g., a base station), or may be executed by a module (e.g., a processor, a chip, or a chip system) applied to the network device, or may be a logical node, a logical module, or software that can implement all or part of the network device functions.

[0126] In one possible implementation, the communication device 1600 may be a chip or a chip system, wherein the chip system may be composed of a chip or may include a chip and other discrete devices. When the communication device 1600 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface; the processing unit is a processor or microprocessor or integrated circuit or logic circuit integrated on the chip. Optionally, the device for implementing the receiving function in the transceiver unit may be regarded as a receiving unit, and the receiving unit corresponds to the input circuit of the chip; the device for implementing the transmitting function in the transceiver unit may be regarded as a transmitting unit, and the transmitting unit corresponds to the output circuit of the chip, that is, the transceiver unit includes a receiving unit and a transmitting unit.

[0127] In one possible implementation, the communication device 1600 may include a processor 1610 and an interface circuit 1620. The processor 1610 and the interface circuit 1620 communicate with each other. It is understood that the interface circuit 1620 may be a transceiver or an input / output interface, wherein the transceiver includes a transmitter and / or a receiver, the transmitter is used to implement a transmission function, and the receiver is used to implement a reception function.

[0128] Optionally, the communication device 1600 may further include a memory 1630, wherein the memory 1630 communicates with the processor 1610 and the interface circuit 1620 via an internal connection path. The memory 1630 is used to store computer programs and instructions, and the processor 1610 can execute the computer programs and instructions stored in the memory 1630.

[0129] In one possible implementation, the communication device 1600 is used to implement various processes and operations corresponding to the network device in the above method 1500.

[0130] It should be understood that the communication device 1600 can be specifically the network device in the above-mentioned method 1500, or it can be a chip or chip system. Correspondingly, the interface circuit 1620 can be the transceiver circuit of the chip, which is not limited here. Specifically, the communication device 1600 can be used to perform the various operations and / or processes corresponding to the network device in the above-mentioned method embodiment. Optionally, the memory 1630 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1610 can be used to execute instructions stored in the memory, and when the processor 1610 executes the instructions stored in the memory, the processor 1610 is used to perform the various operations and / or processes corresponding to the network device in the above-mentioned method 1500.

[0131] During implementation, each operation of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The operation of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and performs the operation of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0132] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, the various operations of the above-mentioned method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The various methods, operations and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The operations of the methods disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the operations of the above-mentioned method in combination with its hardware.

[0133] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0134] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: computer program code, when the computer program code is run on a computer, it enables the computer to execute the various operations or processes performed by the network device of the above-mentioned execution method 1500.

[0135] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable storage medium, which stores program code. When the program code runs on a computer, the computer executes the various operations or processes performed by the network device of the above method 1500.

[0136] According to the method provided in the embodiment of the present application, the present application also provides a communication system, which includes one or more network devices in the aforementioned method 1500.

[0137] The above-mentioned various apparatus embodiments correspond completely to the method embodiments, and the corresponding modules or units perform the corresponding operations. For example, the communication unit (transceiver) performs the receiving or sending operations in the method embodiments, and other operations except sending and receiving can be performed by the processing unit (processor). The functions of the specific units can be based on the corresponding method embodiments. There can be one or more processors.

[0138] In the embodiments of this application, each term and English abbreviation is provided for convenience of description and shall not constitute any limitation to this application. This application does not exclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

[0139] It should be understood that the term "and / or" as used herein describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. A and B can be singular or plural. The character " / " generally indicates an "or" relationship between the associated objects.

[0140] Those skilled in the art will appreciate that the various illustrative logical blocks and operations described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0141] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can be based on the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0142] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0143] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0144] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0145] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0146] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the contributing part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the operations of the methods described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0147] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended 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 may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within 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 first channel, connected to a first filter, configured to receive a first signal from the first filter and output a second signal, wherein the first signal is a signal output after the first filter processes the received signal, and the first channel includes at least one filter; a second channel connected to the first filter, configured to receive a third signal from the first filter and output a fourth signal, wherein the third signal is a signal obtained after the first signal is attenuated; The denoising module is connected to the first channel and the second channel, and is used to receive the second signal and the fourth signal, and perform denoising processing on the second signal according to the fourth signal.

2. The device according to claim 1, characterized in that The second channel includes a first coupler and a second coupler, the first coupler is connected to the output end of the first filter and the input end of the second coupler, and the second coupler is connected to the output end of the first coupler and the output end of the first channel.

3. The device according to claim 2, characterized in that The second channel further includes a first attenuator connected to an output end of the first coupler and an input end of the second coupler.

4. The device according to claim 2, characterized in that The at least one filter comprises a second filter and a third filter, the input end of the second filter is connected to the output end of the first filter, and the output end of the third filter is connected to the input end of the denoising module; The second channel further includes a third coupler and a fourth coupler, the third coupler is connected to the output end of the first coupler and the output end of the second filter, and the fourth coupler is connected to the input end of the third filter and the input end of the second coupler.

5. The device according to claim 4, characterized in that The second channel also includes a second attenuator and a third attenuator, wherein, The second attenuator is connected to the output end of the first coupler and the input end of the third coupler; The third attenuator is connected to the output end of the fourth coupler and the input end of the second coupler.

6. The device according to claim 4 or 5, characterized in that The input end of the second filter is connected to the output end of the first filter, comprising: The input end of the second filter is connected to the output end of the first filter through a low noise amplifier LNA; An input end of the first coupler is connected to an input end of the low noise amplifier LNA.

7. The device according to any one of claims 1 to 6, characterized in that The denoising module, connected to the first channel and the second channel, includes: The denoising module is connected to the first channel and the second channel via an analog-to-digital converter ADC.

8. The device according to any one of claims 1 to 7, characterized in that The first filter is a duplexer.

9. The device according to any one of claims 1 to 8, characterized in that The received signal is a signal received through an antenna.

10. The device according to any one of claims 1 to 9, characterized in that The device is a network device.

11. A method for processing a received signal, characterized in that: Applied to the device according to any one of claims 1 to 10, the method comprising: Process the first signal through the first channel and output the second signal, where the first signal is a signal output after the first filter processes the received signal; Processing the third signal through the second channel to output the fourth signal, wherein the third signal is a signal obtained after the first signal is attenuated; The second signal is processed by the denoising module, wherein the denoising module is used to perform denoising on the second signal according to the fourth signal.

12. A communication device, characterized in that: The communication device comprises means for executing the method of claim 11.

13. A communication device, characterized in that: The communication device comprises: a processor; The processor is configured to execute a computer program or instruction in the memory, and when the computer program or instruction is executed by the processor, the apparatus implements the method according to claim 11.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is caused to perform the method according to claim 11 .

15. A computer program product, characterized in that The computer program product comprises: a computer program code, which, when executed by a processor, causes the processor to perform the method of claim 11 .

16. A chip system, characterized in that: The chip system includes a memory and a processor, and the processor is configured to execute a computer program stored in the memory to implement the method according to claim 11.

17. A communication system, characterized in that: The communication system includes the apparatus according to any one of claims 1 to 10, or includes a module for executing the method according to claim 11.

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