Signal processing method and apparatus, and related device

Abstract

The present application relates to the technical field of communications, and discloses a signal processing method and apparatus, and a related device. The method comprises: a transmitting end executing a first operation, wherein the first operation comprises at least one of the following: determining transmission characteristic information of a transmission signal on the basis of first information; and transmitting first assistance information, the first assistance information being used for assisting a receiving end in determining the transmission characteristic information of the transmission signal, wherein the first information comprises at least one of the following: information related to a transmission parameter or signal characteristic of the transmission signal; time-frequency domain position information of a reference signal, the reference signal being used for estimating the transmission characteristic information of the transmission signal; an energy-saving level or energy-saving mode of the transmitting end; first indication information, the first indication information being transmitted by the receiving end, and the first indication information being used for indicating the transmission characteristic information of the transmission signal; and second assistance information, the second assistance information being information for assisting the transmitting end in transmitting the transmission signal.

Description

Signal processing methods, devices and related equipment

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411006893.0, filed on July 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication technology, and more specifically, to a signal processing method, apparatus, and related equipment. Background Technology

[0004] In related technologies, signal amplification is necessary to transmit electrical signals over long distances and ensure signal quality. Power amplifiers are an important tool in this regard, effectively converting weak signals into powerful output signals by increasing their power. Generally, the efficiency of a power amplifier increases with output power, and its efficiency is highest when operating in the nonlinear region. However, in related technologies, it is not always possible to determine whether a signal is suitable for transmission in the nonlinear region of the power amplifier, which can hinder energy saving at the transmitting end. Summary of the Invention

[0005] This application provides a signal processing method, apparatus, and related equipment that can solve the problem in related technologies where it is not possible to determine whether a signal is suitable for transmission in the saturation region of a power amplifier, thus hindering energy saving at the transmitting end.

[0006] Firstly, a signal processing method is provided, including:

[0007] The sending end performs a first operation, which includes at least one of the following:

[0008] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0009] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0010] The first information includes at least one of the following:

[0011] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0012] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0013] The energy-saving level or energy-saving mode of the transmitting end;

[0014] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0015] The second auxiliary information is information that assists the transmitting end in sending transmission signals.

[0016] Secondly, a signal processing method is provided, including:

[0017] The receiving end processes the received signal based on the target information;

[0018] The target information includes at least one of the following:

[0019] The second information is information related to the transmission characteristics of the received signal;

[0020] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0021] Thirdly, a signal processing apparatus is provided, comprising:

[0022] A first processing module is configured to perform a first operation, the first operation including at least one of the following:

[0023] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0024] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0025] The first information includes at least one of the following:

[0026] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0027] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0028] The energy-saving level or energy-saving mode of the transmitting end;

[0029] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0030] The second auxiliary information is information that assists the transmitting end in sending transmission signals.

[0031] Fourthly, a signal processing apparatus is provided, comprising:

[0032] The third processing module is used to process the received signal according to the target information;

[0033] The target information includes at least one of the following:

[0034] The second information is information related to the transmission characteristics of the received signal;

[0035] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0036] Fifthly, a signal processing apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0037] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first or second aspect.

[0038] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to perform a first operation, the first operation including at least one of the following:

[0039] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0040] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0041] The first information includes at least one of the following:

[0042] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0043] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0044] The energy-saving level or energy-saving mode of the transmitting end;

[0045] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0046] Second auxiliary information, which is information that assists the transmitting end in sending transmission signals;

[0047] Alternatively, the processor is used to process the received signal according to the target information;

[0048] The target information includes at least one of the following:

[0049] The second information is information related to the transmission characteristics of the received signal;

[0050] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0051] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first or second aspect.

[0052] A ninth aspect provides a network-side device, including a processor and a communication interface, wherein the processor is configured to perform a first operation, the first operation including at least one of the following:

[0053] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0054] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0055] The first information includes at least one of the following:

[0056] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0057] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0058] The energy-saving level or energy-saving mode of the transmitting end;

[0059] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0060] Second auxiliary information, which is information that assists the transmitting end in sending transmission signals;

[0061] Alternatively, the processor is used to process the received signal according to the target information;

[0062] The target information includes at least one of the following:

[0063] The second information is information related to the transmission characteristics of the received signal;

[0064] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0065] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0066] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0067] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0068] In a thirteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first or second aspect.

[0069] In this embodiment, the transmitting end determines the transmission characteristic information of the transmitted signal based on the first information. Based on this transmission characteristic information, it can determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier, thereby determining whether the power amplifier is operating in the nonlinear region. This helps improve the efficiency of the power amplifier and achieves energy saving at the transmitting end. The transmitting end also transmits first auxiliary information to assist the receiving end in determining the transmission characteristic information of the transmitted signal. This allows the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. This enables the receiving end to select a suitable demodulation method to process the transmitted signal, compensating for distortion and effectively ensuring the consistency between the signal transmitted and received. Furthermore, this method achieves the goal of processing the transmitted signal using digital post-distortion processing technology, thus contributing to energy saving at the transmitting end. Attached Figure Description

[0070] Figure 1 shows a structural diagram of a communication system applicable to an embodiment of this application;

[0071] Figure 2 shows a schematic diagram of the nonlinear characteristics of the power amplifier;

[0072] Figure 3 shows one of the schematic flowcharts of the signal processing method according to an embodiment of this application;

[0073] Figure 4 shows a second schematic flowchart of the signal processing method according to an embodiment of this application;

[0074] Figure 5 shows an interactive schematic diagram of the signal processing method according to an embodiment of this application;

[0075] Figure 6 shows a schematic diagram of the signal processing method according to an embodiment of this application;

[0076] Figure 7 shows a schematic diagram of one of the modules of the signal processing device according to an embodiment of this application;

[0077] Figure 8 shows a second schematic diagram of the signal processing device according to an embodiment of this application;

[0078] Figure 9 shows a structural block diagram of a communication device according to an embodiment of this application;

[0079] Figure 10 shows a structural block diagram of the terminal according to an embodiment of this application;

[0080] Figure 11 shows a structural block diagram of the network-side device according to an embodiment of this application. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0082] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0083] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0084] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0085] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0086] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0087] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0088] To enable those skilled in the art to better understand the embodiments of this application, the following description will be provided first.

[0089] I. Power Amplifier (PA);

[0090] In related technologies, signal amplification is necessary to transmit electrical signals over long distances and ensure signal quality. Power amplifiers (PAA) are an important tool for this purpose, effectively converting weak signals into powerful output signals by increasing their power.

[0091] 1. Nonlinearity of PA:

[0092] As shown in Figure 2, power amplifier nonlinearity refers to the situation where, when the input signal is a small current signal, the output power increases linearly with the input power, and the ratio of output signal power to input signal power remains constant, i.e., the gain is a fixed value; this state is called the linear state. When the power amplifier receives a large current signal, the power ratio of the output signal to the input signal changes, and the power ratio gradually decreases, i.e., the gain is compressed. The final result is that the input signal power increases, while the output power remains unchanged; this state is called the saturation state. To improve power amplifier efficiency and extend the signal transmission distance, the power amplifier needs to operate in the saturation region, or nonlinear region, for an extended period. However, before reaching saturation, the gain has already been compressed, which is the so-called power amplifier nonlinear distortion.

[0093] Nonlinear distortion in power amplifiers introduces additional frequency components into the transmitted signal, such as harmonic components, intermodulation components, and even intermodulation products between these components. These distorted components do not match the signal to be transmitted, causing problems in the transmission process and resulting in incomplete signals such as voice distortion and interruptions in the received signal. Therefore, it is necessary to linearize the nonlinear distortion of the power amplifier to ensure that the signal remains intact after amplification.

[0094] 2. PA efficiency and power consumption:

[0095] Power amplifiers generally have low efficiency. Theoretically, power amplifiers commonly used in communication systems can achieve 50% or even higher efficiency, but in actual operation, the efficiency is generally only 10% to 30%.

[0096] Generally speaking, the efficiency of a power amplifier increases with the increase of output power, and the efficiency of a power amplifier is the highest when it is operating in the saturation region.

[0097] At the same time, although the gain and efficiency of a power amplifier will increase with the increase of output power, the power consumption of the power amplifier will generally also increase accordingly due to the increase of output power, but the increase is not as much as the increase of output power.

[0098] II. Nonlinear distortion processing techniques:

[0099] There are various ways to deal with the nonlinear distortion of power amplifiers, the most common being power back-off and digital pre-distortion (DPD) technology.

[0100] Power back-off, or power back-off method, involves reducing the input power of a power amplifier by 6-10 dB from the 1 dB compression point (equivalent to the critical point between the amplifier's linear and nonlinear regions), operating it at a level much lower than the 1 dB compression point. This moves the power amplifier away from the saturation region and into the linear operating region, thereby improving the third-order intermodulation distortion (3DIC). Generally, a 1 dB reduction in fundamental power improves 3D intermodulation distortion by 2 dB. However, due to power back-off, the PA's operating point is further away from the saturation point, resulting in lower PA efficiency. Furthermore, when the output power is reduced to a certain level, such as when the 3D intermodulation distortion value is below -45 dBc, further back-off is unlikely to significantly improve the PA's linearity. Moreover, for broadband signals, the effect of power back-off is limited due to memory effects.

[0101] Digital predistortion technology, through the cascading of a predistorter and a power amplifier (PA), integrates nonlinear distortion functionality into the digital baseband signal processing domain. The amount of distortion exhibited by the predistorter is comparable to (or equal to) that of the amplifier, but with the opposite function. Combining these two nonlinear distortion functions enables a highly linear, distortion-free system. The challenge of digital predistortion technology lies in the fact that the distortion (i.e., nonlinearity) characteristics of the PA vary with time, temperature, and bias, and differ between different devices.

[0102] III. Digital Post-Distortion Techniques:

[0103] Unlike DPD technology, which preprocesses nonlinear distortion at the transmitter where the power amplifier (PA) is located, digital post-distortion technology performs post-processing on the signal at the receiver, removing nonlinear distortion terms from the received signal. The advantage of digital post-distortion technology is that the PA can operate at its saturation point, thereby improving the power amplifier's efficiency.

[0104] Assuming we use the commonly used MP model to establish the mathematical model of PA, the details are as follows:

[0105] Where n represents the nth sampling point in the time domain, d represents the memory depth of PA, p represents the order, and c represents the kernel function of the series. In other words, the nonlinear characteristics in the signal can be simply considered to be composed of memory depth, order, and kernel function.

[0106] Once the receiver understands the nonlinear characteristics of the PA, it can establish a mathematical model of the PA and then remove the nonlinear distortion terms in the signal.

[0107] The signal processing method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0108] As shown in Figure 3, this application embodiment provides an information processing method, including:

[0109] Step 301: The sending end performs the first operation;

[0110] In this embodiment of the application, the sending end is a terminal or a network-side device, and the network-side device may be a base station.

[0111] The receiving end can be a terminal or a network-side device. For example, the sending end is a terminal and the receiving end is a terminal; or, the sending end is a terminal and the receiving end is a base station; or, the sending end is a base station and the receiving end is a terminal.

[0112] The first operation includes at least one of the following:

[0113] First item: Based on the first information, determine the transmission characteristic information of the transmitted signal.

[0114] Optionally, the transmission characteristic information is information used to indicate whether the transmitted signal is sent in the nonlinear region.

[0115] Here, the transmission characteristic information of the transmitted signal is determined based on the first information, so as to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier. That is, based on the transmission characteristic information, it is determined whether to perform transmission in the nonlinear region to achieve energy saving effect.

[0116] The first information includes at least one of the following:

[0117] A1: Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0118] A2: Time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal.

[0119] If the time-frequency domain position information of the reference signal indicates that the reference signal is transmitted in the nonlinear region, it can be determined whether the transmission signal is transmitted in the nonlinear region. For example, whether the transmission is in the nonlinear region is associated with different time-frequency domain positions of the reference signal, then the time-frequency domain position information of the reference signal implicitly indicates whether the transmission signal is transmitted in the nonlinear region.

[0120] A3: Energy saving level or energy saving mode of the sending end.

[0121] Optionally, when the energy efficiency level of the transmitting end is high, transmission is performed in the non-linear region; otherwise, transmission is performed in the linear region.

[0122] A4: First indication information, which is sent by the receiving end and is used to indicate the transmission characteristic information of the transmitted signal.

[0123] For example, if the first indication information indicates that the transmission signal is sent in the nonlinear region, then the transmitting end sends the transmission signal in the nonlinear region; otherwise, the transmission signal is sent in the linear region.

[0124] A5: Second auxiliary information, which is information that assists the transmitting end in sending transmission signals.

[0125] The transmitting end determines the transmission characteristic information of the transmitted signal based on the second auxiliary information, and then determines whether to perform transmission in the nonlinear region.

[0126] The second item: Sending first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal.

[0127] Here, by sending first auxiliary information, the receiving end can determine the transmission characteristic signal of the transmitted signal based on the first auxiliary information, and then select an appropriate signal demodulation method to demodulate the received transmitted signal based on the transmission characteristic information.

[0128] In some embodiments, considering that the base station is unaware of the terminal's PA characteristics, when the terminal transmits without regard to the power indicated by the base station, it needs to consider other factors to determine whether to transmit in the non-linear region:

[0129] In some embodiments, the receiving end may impose certain restrictions on the sending end's transmission based on its processing capabilities or other factors. For example, it may prohibit / dislike the sending end from transmitting in the nonlinear region on certain time-frequency domain resources or within a certain time range, or it may have certain expectations regarding the nonlinear characteristics of the transmitted signal sent by the sending end. The sending end then determines the final transmission method based on this information.

[0130] The transmission signal in the embodiments of this application includes at least one of a reference signal, a data signal, and a control signal.

[0131] In this embodiment, the transmitting end determines the transmission characteristic information of the transmitted signal based on the first information. Based on this transmission characteristic information, it can determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier, thereby determining whether the power amplifier is operating in the nonlinear region. This helps improve the efficiency of the power amplifier and achieves energy saving at the transmitting end. The transmitting end also sends first auxiliary information to assist the receiving end in determining the transmission characteristic information of the transmitted signal. This allows the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. This enables the receiving end to select a suitable demodulation method to process the transmitted signal, compensating for distortion and effectively ensuring the consistency between the signal transmitted and received. Furthermore, this method achieves the goal of processing the transmitted signal using digital post-distortion processing technology, thus contributing to energy saving at the transmitting end.

[0132] Optionally, information related to the transmission parameters or signal characteristics of the transmitted signal includes at least one of the following:

[0133] (1) Power scheduling information for transmitted signals.

[0134] Since the uplink power of the terminal is controlled by the base station, in some embodiments, whether the terminal performs transmission in the nonlinear region is determined directly based on the uplink power indicated by the base station. When the indicated uplink power is within the amplification range of the nonlinear region, or when it is more suitable to amplify in the PA nonlinear region under appropriate voltage or other settings, the terminal transmits in the nonlinear region; otherwise, it transmits in the linear region.

[0135] (2) Information on the changes in nonlinear parameters associated with the transmitted signal.

[0136] In some embodiments, the nonlinear characteristic information (which may also be described as nonlinear parameters) of the transmitting end may have changed significantly, causing the nonlinear characteristics of the receiving end to no longer be applicable. If the terminal is already close to the resource location scheduled by the base station or the downlink resource location indicated by the base station, it is too late to send auxiliary information for the receiving end to perform nonlinear characteristic estimation, or too late to send reference signals for the receiving end to perform nonlinear characteristic estimation. Therefore, the transmitting end chooses to transmit in the linear region.

[0137] (3) Time-frequency domain scheduling information of transmitted signals.

[0138] For example, if the nonlinear parameters change significantly and there is no reference signal for nonlinear feature estimation before the scheduled time-frequency domain position, meaning that the receiver cannot estimate the new nonlinear features in time using the reference signal, or if other factors prevent the receiver from obtaining the new nonlinear features in time, then transmission is performed in the linear region; otherwise, transmission is performed in the nonlinear region.

[0139] For example, if a user's transmission resources are adjacent in the frequency domain or the gap between frequency domains is less than a certain threshold, transmission will not be carried out in the nonlinear region to avoid greater inter-user interference.

[0140] (4) At least one of the peak to average power ratio (PAPR) range, mean and expected value of the transmitted signal.

[0141] In some embodiments, a large PAPR range of the transmitted signal can lead to significant differences in the average power of the transmitted signal across different time domains. If the transmission is performed in the nonlinear region, it may correspond to different nonlinear characteristics, resulting in a substantial increase in the reception complexity at the receiver. Therefore, when the PAPR exceeds a certain threshold, the transmitted signal is sent in the linear region. In this case, the choice of threshold is related to the nonlinear characteristics of the PA at the transmitter and the processing capability of the receiver.

[0142] In some embodiments, the PAPR range of the signal is large. If it is transmitted in the linear region, it will cause a large power backoff, thereby affecting the efficiency of the PA at the transmitting end. Therefore, when the PAPR is greater than a certain threshold, the signal is transmitted in the nonlinear region.

[0143] In other embodiments, the PAPR range of the signal is large. If it is transmitted in the nonlinear region, it may exceed the signal processing range of the power amplifier, resulting in signal distortion and causing the receiver to be unable to receive information correctly. Therefore, when the PAPR is greater than a certain threshold and / or when the maximum power of the signal exceeds the maximum output power of the amplifier, the signal is transmitted in the linear region.

[0144] Optionally, the transmission characteristic information includes at least one of the following: power information of the transmitted signal, linear characteristic information, and nonlinear characteristic information.

[0145] In this embodiment of the application, the nonlinear feature information includes at least one of the following: the nonlinear state of the power amplifier associated with the transmission signal, the model of the power amplifier associated with the transmission signal, the kernel function (series kernel) of the power amplifier associated with the transmission signal, the memory depth of the power amplifier associated with the transmission signal, the operating point of the power amplifier associated with the transmission signal transmitting the transmission signal, and the average power of the power amplifier associated with the transmission signal transmitting the transmission signal.

[0146] Based on the above transmission characteristic information, the transmitting end determines whether the transmission signal is transmitted in the nonlinear region.

[0147] Optionally, the linear characteristic information includes the linear state information of the power amplifier associated with the transmitted signal;

[0148] The nonlinear characteristic information includes the nonlinear state information of the power amplifier associated with the transmitted signal.

[0149] The nonlinear state of the power amplifier mentioned above refers to the power amplifier operating in the nonlinear region, which can also be described as the saturation region.

[0150] It should be noted that the associated power amplifier may be an equivalent power amplifier. The meaning of equivalent power amplifier is that, for the receiving end, the nonlinear characteristics associated with the received transmitted signal are not necessarily the nonlinear state of a specific power amplifier, but may be the combined effect of the nonlinear states of multiple power amplifiers, or may be the nonlinear characteristics after some signal processing, such as digital predistortion, rather than the true nonlinear state of the power amplifier.

[0151] In this embodiment, the receiving end can determine whether the power amplifier of the transmitting end is operating in a nonlinear state based on the aforementioned nonlinear or linear characteristic information. This allows it to determine whether the received signal contains nonlinear distortion terms, and thus select a suitable signal demodulation method to demodulate the data to compensate for the distortion of the received transmitted signal. This effectively ensures the consistency between the signal transmitted by the transmitting end and the signal received by the receiving end. Furthermore, this method achieves the purpose of processing the transmitted signal through digital post-distortion processing technology, thereby facilitating energy saving at the transmitting end.

[0152] The following is a further explanation of the content included in the second auxiliary information in the first information above.

[0153] Optionally, the second auxiliary information includes at least one of the following:

[0154] B1: Requirements for nonlinear transmission;

[0155] Optionally, the requirements for the nonlinear transmission include at least one of the following:

[0156] (1) The error vector magnitude (EVM) is less than or equal to the first threshold;

[0157] It is understandable that the receiving end has certain requirements for the EVM of the transmitted signal in the nonlinear region. If these requirements are exceeded, the transmitting end should not transmit the transmitted signal in the nonlinear region.

[0158] (2) The Adjacent Channel Leakage Ratio (ACLR) is less than or equal to the second threshold;

[0159] It is understandable that the receiving end has certain requirements for the ACLR of the transmitted signal in the nonlinear region. If these requirements are exceeded, the transmitting end should not transmit the transmitted signal in the nonlinear region.

[0160] (3) The range of variation of the nonlinear parameter is less than or equal to the third threshold;

[0161] It is understandable that the receiving end expects the nonlinear state of the power amplifier to remain largely unchanged within a certain time range.

[0162] (4) The minimum power in the nonlinear region is greater than or equal to the fourth threshold;

[0163] It is understandable that the receiver does not expect the transmitter to transmit in the nonlinear region when transmitting at a lower power.

[0164] (5) The power of the 1dB compression point of the power amplifier associated with the transmitted signal is greater than or equal to the fifth threshold.

[0165] It is understandable that the receiver does not expect the transmitter to transmit in the nonlinear region when transmitting at a lower power.

[0166] (6) The power at the saturation point of the power amplifier associated with the transmitted signal is greater than or equal to the sixth threshold.

[0167] It is understandable that the receiver does not expect the transmitter to transmit in the nonlinear region when transmitting at a lower power.

[0168] B2: Nonlinear processing capability of the receiving end.

[0169] For example, if the receiver does not have nonlinear processing capabilities, it transmits in the linear region of the power amplifier; if the receiver has nonlinear processing capabilities, it transmits in the nonlinear region of the power amplifier.

[0170] B3: Recommended nonlinear power range for the receiver.

[0171] The transmitting end determines whether the transmitted signal is suitable for transmission in the nonlinear region of the power amplifier based on the power corresponding to the transmitted signal and the power range of the nonlinear region recommended by the receiving end.

[0172] B4: Recommended transmission time range for the non-linear zone, transmission time window for the non-linear zone, start time for transmission in the non-linear zone, or end time for transmission in the linear zone.

[0173] The transmitting end determines whether to transmit the signal in the linear zone or the nonlinear zone based on the transmission time range, nonlinear zone transmission time window, start time of nonlinear zone transmission, or end time of linear zone transmission recommended by the receiving end.

[0174] B5: Energy saving level / energy saving mode of the receiver.

[0175] Since digital post-distortion processing requires more computation and therefore consumes more power, when the receiver has high energy-saving requirements, it is not desirable for the transmitter to send transmission signals in the nonlinear region.

[0176] Optionally, sending the first auxiliary information includes:

[0177] The first auxiliary information is sent when the sending conditions are met; or, the first auxiliary information is sent periodically.

[0178] The sending conditions include at least one of the following:

[0179] C1: Triggered by the sender or the receiver;

[0180] C2: The nonlinear characteristic timer at the transmitting or receiving end has failed;

[0181] This nonlinear characteristic validity timer is used to determine whether the obtained nonlinear characteristic is valid; it can be understood as the validity period of the nonlinear information. Before or after the validity period ends, the transmitting end needs to inform the receiving end of new nonlinear characteristic information, or send a reference signal so that the receiving end can estimate the latest nonlinear characteristic information based on the new reference signal.

[0182] C3: The time during which the transmitting end does not send a transmission signal is greater than or equal to the seventh threshold;

[0183] Here, if the time during which the transmitting end does not send a transmission signal exceeds the seventh threshold, the transmitting end is triggered to inform the receiving end of new nonlinear characteristic information, or to send a reference signal, so that the receiving end can estimate the nonlinear characteristic information, thereby avoiding the use of nonlinear characteristic information with large errors after the nonlinear characteristic information has changed significantly.

[0184] C4: The duration for which the transmitting end continuously sends transmission signals is greater than or equal to the eighth threshold;

[0185] Here, if the duration of the transmitted signal sent by the transmitting end exceeds the eighth threshold, the transmitting end is triggered to inform the receiving end of new nonlinear characteristic information, or to send a reference signal, so that the receiving end can re-estimate the nonlinear characteristic information and reduce the impact of memory effect on the nonlinear characteristic information.

[0186] C5: The transmitter detects a change in the nonlinear state of the power amplifier that is greater than or equal to the ninth threshold.

[0187] This nonlinear state can be caused by factors such as temperature and memory effects. Significant temperature changes can affect the nonlinear state of the PA. Changes in memory depth can also affect the nonlinear state of the PA. Therefore, it is necessary to update the nonlinear characteristic information.

[0188] C6: The bit error rate, retransmission rate, or non-acknowledgment (NACK) transmission rate of the receiving end is greater than or equal to the tenth threshold, or the data transmission accuracy rate, retransmission rate, or acknowledgment transmission rate of the receiving end is less than or equal to the eleventh threshold.

[0189] Optionally, in this embodiment of the application, the triggering event corresponding to C6 may also be that the offset value of the receiving end's bit error rate, retransmission rate, or transmission rate of non-acknowledgment message (NACK) is greater than a preset threshold, or that the offset value of the receiving end's data transmission accuracy, retransmission rate, or transmission rate of acknowledgment message is greater than a preset threshold.

[0190] It is understandable that the signal processing accuracy at the receiving end is low at this point, possibly because the nonlinear characteristic information at the receiving end is no longer accurate. Therefore, it is necessary to update the nonlinear characteristic information.

[0191] C7: The transmitting end needs to send a transmission signal;

[0192] Before sending the transmission signal, inform the receiver of new nonlinear characteristic information, or send a reference signal to facilitate the receiver's estimation of the nonlinear characteristic information in order to receive the transmission signal.

[0193] C8: The transmitting end receives the scheduling information for the transmitted signal;

[0194] C9: Beam failure, beam recovery, beam switching, or power amplifier switching has occurred at the transmitting end;

[0195] Since different beams correspond to different power amplifiers, or different numbers of amplifiers, a transmission reference signal is triggered in the event of beam failure, beam recovery, or beam switching at the transmitting end, so that the receiving end can re-estimate the nonlinear characteristic information.

[0196] If the power amplifier is switched, the nonlinear state corresponding to different power amplifiers may be different. Therefore, it is necessary to inform the receiver of the new nonlinear characteristic information or retransmit the reference signal.

[0197] C10: A state change has occurred at the sending end;

[0198] For example, switching from an idle state to a connected state, or from an inactive state to a connected state, or from a connected state to an idle state or an inactive state.

[0199] C11: Cell handover occurred at the transmitting end.

[0200] When a cell handover occurs at the transmitting end, the base station changes, and naturally the power amplifier also changes. Therefore, it is necessary to inform the receiving end of the new nonlinear characteristic information or retransmit the reference signal.

[0201] Since performing transmission in the nonlinear region will cause spectrum regeneration, which will increase interference between users, the transmitting end needs to meet certain restrictions before it can perform transmission in the nonlinear region. That is, the first auxiliary information can only be sent if the above-mentioned transmission conditions are met.

[0202] The transmitting end, for example, the base station, does not perform transmission in (or the receiving end does not expect the transmitting end to be in) a non-linear region when at least one of the following conditions is met:

[0203] (1) The number of users accessing the base station exceeds a certain threshold;

[0204] It is understandable that when there are more users, it is easier to be interfered with by other users, and sending in the non-linear region will bring more serious interference between users. In this case, the sending end does not perform transmission in the non-linear region, or the receiving end does not expect the sending end to perform transmission in the non-linear region.

[0205] (2) The number of users receiving data in the same time domain unit is greater than a certain threshold;

[0206] It is understandable that there is significant interference between users at this time, and transmission in the non-linear region would cause even more severe interference between users. Therefore, the base station does not perform transmission in the non-linear region at this time, or the terminal does not expect the base station to perform transmission in the non-linear region.

[0207] (3) Users scheduled by the base station have adjacent frequency domains or their frequency domain gap is less than a certain threshold;

[0208] It is understandable that there is significant interference between users at this time, and transmission in the non-linear region would cause even more severe interference between users. Therefore, the sending end does not perform transmission in the non-linear region at this time, or the receiving end does not expect the sending end to perform transmission in the non-linear region.

[0209] (4) Interference between users exceeds a certain threshold;

[0210] It is understandable that when there is significant interference between users, transmission in the nonlinear region would cause even more severe interference. Therefore, the transmitting end does not perform transmission in the nonlinear region, or the receiving end does not expect the transmitting end to perform transmission in the nonlinear region.

[0211] (5) The channel quality is less than a certain threshold;

[0212] It is understandable that the decoding success rate of the receiver will be lower when the channel quality is poor, and transmission in the non-linear region may further affect the reception. Therefore, the transmitter does not perform transmission in the non-linear region, or the receiver does not expect the transmitter to perform transmission in the non-linear region.

[0213] (6) The receiving end is in power saving mode, or the power saving level is greater than a certain level, or power saving is desired.

[0214] It is understandable that signal processing using digital post-distortion technology is more power-consuming. Therefore, when the receiver has a greater need for power saving, the transmitter does not perform transmission in the nonlinear region, or the receiver does not expect the transmitter to perform transmission in the nonlinear region.

[0215] When the transmitter is a terminal, since the uplink transmission of the terminal is scheduled by the base station, and the terminal is unaware of whether other terminals are also transmitting in adjacent frequency domains, whether to restrict transmission in nonlinear regions needs to be indicated by the base station.

[0216] In some embodiments, the base station is in power-saving mode, where it is not expected or prohibited for the terminal to perform transmission in the non-linear region;

[0217] In some other embodiments, the base station schedules multiple users in adjacent frequency domains. In this case, it is not expected that these users or some of the users will perform transmissions in nonlinear regions to avoid affecting data demodulation.

[0218] Optionally, the first auxiliary information includes at least one of the following:

[0219] D1: Second indication information, which is used to indicate to the receiving end whether the transmitting end sends a reference signal to assist the receiving end in determining the transmission characteristic information of the transmission signal, or to indicate to the receiving end whether the transmitting end sends information other than the second indication information in the first auxiliary information;

[0220] In some embodiments, the transmitter may choose, based on certain conditions, whether to send auxiliary information to assist the receiver in performing digital post-distortion processing, or to send a reference signal to assist the receiver in performing digital post-distortion processing. Since different methods have different effects on the receiver, a second indication is used to inform the transmitter of its choice. For example, a 1-bit indication.

[0221] D2: Power amplifier model related information associated with the transmitted signal.

[0222] The relevant information for this power amplifier model includes at least one of the following: PA model type, kernel function, memory depth, and order.

[0223] It is understandable that the transmitting end informs the receiving end of the relevant information about the power amplifier model, and the receiving end can then model the nonlinear characteristics of the power amplifier based on this information, thereby performing digital post-distortion.

[0224] In some embodiments, the transmitting end informs the receiving end of all or part of the information related to its equivalent power amplifier model. The receiving end determines which power amplifiers or equivalent power amplifiers are associated with the transmitted signal, and can then model the nonlinear characteristics of the power amplifiers based on this information, thereby performing digital post-distortion.

[0225] D3: Power amplifier information or equivalent power amplifier information associated with the transmitted signal; in some embodiments, the transmitting end informs the receiving end of all or part of the transmitting end's or equivalent power amplifier model-related information. When the transmitting end informs the receiving end which power amplifiers or equivalent power amplifiers are associated with the transmitted signal, the receiving end can model the nonlinear characteristics of the power amplifiers based on this information, thereby performing digital post-distortion.

[0226] D4: Digital predistortion (DPD) related information associated with the transmitted signal.

[0227] The DPD-related information includes at least one of the following: whether DPD is enabled, DPD parameter configuration information, and the impact of DPD on the PA model.

[0228] It is understandable that digital predistortion (DPD) technology pre-compensates the transmitted signal, affecting its nonlinear characteristics. It is no longer entirely the nonlinear characteristics of the associated power amplifier, but rather an equivalent nonlinear characteristic. Therefore, understanding DPD-related information at the receiving end is beneficial for performing digital post-distortion.

[0229] D5: The linear or nonlinear range of the power amplifier associated with the transmitted signal;

[0230] The transmitting end informs the receiving end of the linear or nonlinear range of the power amplifier, which helps the receiving end determine whether the transmitted signal is sent in the nonlinear range, and thus determine whether digital distortion has been performed.

[0231] D6: The power threshold, minimum power in the nonlinear region, 1dB compression point, or saturation point of the power amplifier associated with the transmitted signal.

[0232] The transmitter informs the receiver about these characteristics of the power amplifier, which helps the receiver determine whether the transmitted signal is being sent in the nonlinear region, and thus determine whether digital distortion has occurred.

[0233] D7: The nonlinear operating point of the power amplifier associated with the transmitted signal;

[0234] The operating point in this nonlinear region corresponds to one operating frequency of the power amplifier.

[0235] D8: The range of the nonlinear region associated with the nonlinear region operating point;

[0236] Since the range of the nonlinear region may be large, only a certain range of nonlinear regions may share the same nonlinear characteristics. The transmitting end informs the receiving end of the range of the nonlinear region associated with the nonlinear region operating point, which helps it to establish an accurate power amplifier model to perform digital post-distortion.

[0237] D8: Clipping or power back-off related information associated with the transmitted signal;

[0238] The power back-off information includes the magnitude and / or coefficient of the power back-off value. It is understood that clipping and power back-off affect the actual transmitted power of the signal and the operating point of the power amplifier. Informing the receiver of clipping or power back-off information from the transmitting end helps it establish an accurate power amplifier model to handle digital distortion.

[0239] D9: Information on the first parameter associated with the transmission signal and / or the change of the first parameter, wherein the first parameter includes at least one of port, beam, modulation scheme and power supply voltage.

[0240] D9: Information on the second parameter associated with the transmitted signal and / or the change of the second parameter, wherein the second parameter includes at least one of in-band distortion parameter and out-of-band transmission parameter;

[0241] D10: Information related to changes in nonlinear parameters.

[0242] The change in nonlinear parameters includes the change in nonlinear parameters caused by at least one of D1 to D10 above.

[0243] It should be noted that the auxiliary information provided by the transmitting end to the receiving end may not only include information related to the power amplifier or other transmission parameters associated with the transmitted signal, but may also include information related to other power amplifiers, equivalent amplifiers, or other transmission parameters. Since nonlinear distortion is influenced by many factors, directly informing the receiving end of all relevant information through the first auxiliary information to assist the receiving end in performing reception would incur significant overhead for the transmitting end, especially when the first auxiliary information is carried within control information. Therefore, this application provides a transmission method that saves signaling overhead.

[0244] In some embodiments, both the sending end and the receiving end maintain a mapping table for the first auxiliary information. When the sending end sends the first auxiliary information, it only needs a bitmap with a small number of bits or informs the receiving end of the index corresponding to the first auxiliary information, thereby reducing the overhead of the first auxiliary information.

[0245] In some embodiments, different types of information in the first auxiliary information will correspond to different mapping tables. For example, the kernel function of the PA model corresponds to one table, and the parameters associated with DPD correspond to another table. In this case, the receiving end needs to determine the parameters for nonlinear distortion processing based on different information. The processing complexity of this method is located at the receiving end, and the overhead of the first auxiliary information is relatively large.

[0246] In some embodiments, the first auxiliary information corresponds to a table. In this case, the sending end determines the final nonlinear distortion parameters based on the various information received and informs the corresponding index or sends a bitmap. The receiving end can directly determine the parameters for nonlinear distortion processing. In comparison, the processing complexity is mainly located at the sending end, and the overhead of the first auxiliary information is very low.

[0247] In some embodiments, in order to balance the processing complexity of the sending and receiving ends, the auxiliary information is divided into Q classes, with each class corresponding to only one auxiliary feedback information. In this case, the auxiliary information contains Q indexes or bitmaps.

[0248] Optionally, the method further includes:

[0249] If the transmission characteristic information indicated by the first indication information is inconsistent with the transmission characteristic information indicated by the third indication information, the second operation is performed;

[0250] Wherein, the third indication information is the information in the first information other than the first indication information, and the second operation includes at least one of the following:

[0251] A transmission signal may be sent according to the transmission characteristic information indicated by the first indication information, or a transmission signal may be sent according to the transmission characteristic information indicated by the third indication information.

[0252] Send feedback information, which is used to instruct the receiving end to resend the first indication information or adjust the third indication information, and / or, the feedback information includes at least one of the first indication information and the third indication information recommended by the sending end.

[0253] Optionally, the feedback information can be a negative acknowledgment (NACK) message. This NACK message instructs the base station to retransmit the first indication information.

[0254] Optionally, the feedback information may be power adjustment recommendation information, used to instruct the base station to adjust the uplink power.

[0255] Assume the terminal transmits based on the first indication and backs down or increases the uplink power indicated by the third indication information to conform to the first indication information of the base station.

[0256] When a base station transmits uplink power control information based on the third indication information, it can indicate the actual transmission working area or working point in advance or when sending transmission signals.

[0257] As an optional implementation, in this embodiment of the application, the transmission signal can be sent according to the transmission feature information indicated by the first indication information or according to the transmission feature information indicated by the third indication information, based on the priority of the first indication information and the third indication information.

[0258] For example, when controlling the transmission mode of a terminal, in addition to uplink power control, the base station can also instruct the terminal whether to perform transmission in a non-linear region or a linear region, such as indirectly instructing the terminal to transmit in a linear region or a non-linear region by instructing the transmission characteristic information through a first indication information. However, since the base station may not know the characteristics of the terminal's PA, or the characteristics of the PA may change due to various factors, the following two conflicting situations may occur.

[0259] Scenario 1: The uplink power indicated by the base station is in the non-linear region, but it instructs the terminal to perform transmission in the linear region.

[0260] In some embodiments, the terminal determines whether to transmit according to the power indication method or the indication to transmit in the linear area, based on predefined or network-side pre-configured priority rules.

[0261] In some embodiments, base station indication is predefined as priority, and the terminal does not transmit according to the uplink power indicated by the base station, but instead backs up the power to make the transmission live in the linear region; optionally, the terminal notifies the base station of the power back-up and / or the back-up power value during transmission.

[0262] In some embodiments, power indication is predefined as priority, and the PA ultimately operates in the nonlinear region. In order to remove the nonlinear characteristics of the signal when the base station demodulates the data, the terminal notifies the base station in advance, or the terminal sends an additional reference signal during scheduling. This reference signal is used to assist the receiver in estimating the nonlinear characteristic information.

[0263] In some embodiments, the terminal uses techniques such as DPD or voltage adjustment to ensure that the uplink power indicated by the base station is within the linear region of the terminal PA.

[0264] Scenario 2: The uplink power indicated by the base station is in the linear region, but the terminal is instructed to perform transmission in the non-linear region.

[0265] In some embodiments, the terminal transmits according to uplink power, with an additional indication that it is transmitting in the linear region.

[0266] In some embodiments, the terminal transmits according to the uplink power without additional indication, expecting the base station to determine whether the terminal is transmitting in the linear or non-linear region through CRC check. In this case, the base station needs to demodulate the data in two ways.

[0267] In some embodiments, the terminal increases the uplink transmission power, enabling transmission to be performed in the non-linear region. Optionally, the actual transmission power is determined based on the non-linear region operating point indicated by the base station, either meeting the minimum power required for operation in the non-linear region, or maintaining consistency with the transmission power of the previously transmitted first reference signal.

[0268] In this embodiment, the transmitting end determines the transmission characteristic information of the transmitted signal based on the first information. Based on this transmission characteristic information, it can determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier, thereby determining whether the power amplifier is operating in the nonlinear region. This helps improve the efficiency of the power amplifier and achieves energy saving at the transmitting end. The transmitting end also transmits first auxiliary information to assist the receiving end in determining the transmission characteristic information of the transmitted signal. This allows the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. This enables the receiving end to select a suitable demodulation method to process the transmitted signal, compensating for distortion and effectively ensuring the consistency between the signal transmitted and received. Furthermore, this method achieves the goal of processing the transmitted signal using digital post-distortion processing technology, thus contributing to energy saving at the transmitting end.

[0269] As shown in Figure 4, this application embodiment also provides a signal processing method, including:

[0270] Step 401: The receiving end processes the received signal according to the target information;

[0271] The target information includes at least one of the following:

[0272] The second information is information related to the transmission characteristics of the received signal;

[0273] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0274] In this embodiment, the receiving end can determine the transmission characteristic information of the transmitted signal based on the second information and / or the first auxiliary information. This enables the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. As a result, it can select an appropriate demodulation method to process the transmitted signal to compensate for the distortion of the received transmitted signal, effectively ensuring the consistency between the signal transmitted by the transmitting end and the signal received by the receiving end. Furthermore, this method achieves the purpose of processing the transmitted signal through digital post-distortion processing technology, which is beneficial to achieving energy saving at the transmitting end.

[0275] Optionally, the transmission characteristic information includes at least one of the power information, linear characteristic information, and nonlinear characteristic information of the received signal.

[0276] Optionally, the linear characteristic information includes the linear state information of the power amplifier associated with the received signal;

[0277] The nonlinear characteristic information includes the nonlinear state information of the power amplifier associated with the received signal.

[0278] The transmission feature information in this embodiment is the same as the transmission feature information on the sending end side, and will not be described again here.

[0279] Optionally, the second information includes at least one of the following:

[0280] E1: The fourth indication information sent by the transmitting end, which is used to indicate whether the received signal is transmitted in the nonlinear state of the power amplifier.

[0281] Optionally, the fourth indication information may be sent before the transmission signal is sent, and the fourth indication information may be carried in the PDCCH; or, the fourth indication information may be sent simultaneously with the transmission signal.

[0282] E2: The pattern of the reference signal, which is related to whether the received signal is in the nonlinear state.

[0283] E3: Uplink transmission scheduling information.

[0284] When the receiving end is a base station, it can be determined based on the scheduling power, the number of symbols, or the scheduling indication information (indicating whether the terminal is allowed to send in the linear or non-linear area).

[0285] E4: Power information of the received signal.

[0286] E5: Information about the type of received signal.

[0287] For example, when the time domain length of the received transmitted signal is less than L, the receiver assumes that the signal is transmitted in the linear region.

[0288] When the time domain length of the transmitted signal is short, if a reference signal also needs to be transmitted, to avoid lower spectral efficiency and prevent the reference signal from occupying an extra symbol, the transmitting end is considered to be transmitting the signal in the linear region. Similarly, if the receiving end schedules the transmitting end to perform the transmission, when the allocated time domain length is less than L, it can be assumed that the receiving end expects the transmitting end to operate in the linear region to perform the transmission.

[0289] For example, if the received signal is a transmission signal in a specific control information format, it is determined whether the transmission signal is sent in the linear region or the non-linear region. For instance, if PUCCH format 0 or PUCCH format 2 is received, it is sent in the linear region.

[0290] For example, if a specific reference signal is received, such as a Sounding Reference Signal (SRS) or a Synchronization Signal and PBCH block (SSB), it is determined that the reference signal was transmitted in the linear region.

[0291] Optionally, the first auxiliary information includes at least one of the following:

[0292] The second indication information is used to instruct the receiving end whether the transmitting end sends a reference signal to assist the receiving end in determining the transmission characteristic information of the transmission signal, or to instruct the receiving end whether the transmitting end sends information other than the second indication information in the first auxiliary information.

[0293] Information related to the power amplifier model associated with the transmitted signal;

[0294] Information about the power amplifier or equivalent power amplifier associated with the transmitted signal;

[0295] Digital predistortion (DPD) related information associated with transmitted signals;

[0296] The linear or nonlinear range of the power amplifier associated with the transmitted signal;

[0297] The power threshold, minimum power in the nonlinear region, 1dB compression point, or saturation point of the power amplifier associated with the transmitted signal;

[0298] The nonlinear operating point of the power amplifier associated with the transmitted signal;

[0299] The nonlinear region range associated with the nonlinear region operating point;

[0300] Information related to clipping or power back-off associated with the transmitted signal;

[0301] The first parameter associated with the transmitted signal and / or information on the change of the first parameter, wherein the first parameter includes at least one of port, beam, modulation scheme and power supply voltage.

[0302] The second parameter associated with the transmitted signal and / or information on the change of the second parameter, wherein the second parameter includes at least one of in-band distortion parameter and out-of-band transmission parameter;

[0303] Information related to changes in nonlinear parameters.

[0304] The first auxiliary information has been described in detail in the method embodiment on the sending end side, and will not be repeated here.

[0305] Optionally, the method in this application embodiment further includes:

[0306] Send second auxiliary information, which is information to assist the sending end in sending the transmission signal.

[0307] Optionally, the second auxiliary information includes at least one of the following:

[0308] Requirements for nonlinear transmission;

[0309] The nonlinear processing capability of the receiving end;

[0310] Recommended nonlinear power range for the receiver;

[0311] Recommended transmission time range, transmission time window, start time of nonlinear transmission, or end time of linear transmission at the receiving end;

[0312] Energy efficiency rating / energy efficiency mode of the receiver.

[0313] Optionally, the requirements for the nonlinear transmission include at least one of the following:

[0314] Vector amplitude error EVM is less than or equal to the first threshold;

[0315] Adjacent channel leakage ratio (ACLR) is less than or equal to the second threshold;

[0316] The range of variation of the nonlinear parameter is less than or equal to the third threshold;

[0317] The minimum power in the nonlinear region is greater than or equal to the fourth threshold.

[0318] The power at the 1dB compression point of the power amplifier associated with the transmitted signal is greater than or equal to the fifth threshold.

[0319] The power at the saturation point of the power amplifier associated with the transmitted signal is greater than or equal to the sixth threshold.

[0320] The second auxiliary information has been described in detail in the method embodiment of the sending end, and will not be repeated here.

[0321] In this embodiment, the receiving end can determine the transmission characteristic information of the transmitted signal based on the second information and / or the first auxiliary information. This enables the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. As a result, it can select an appropriate demodulation method to process the transmitted signal to compensate for the distortion of the received transmitted signal, effectively ensuring the consistency between the signal transmitted by the transmitting end and the signal received by the receiving end. Furthermore, this method achieves the purpose of processing the transmitted signal through digital post-distortion processing technology, which is beneficial to achieving energy saving at the transmitting end.

[0322] In some embodiments, the communication process between the sender and receiver is shown in Figure 5, including:

[0323] Step 1: The receiving end sends the second auxiliary information to the sending end.

[0324] The receiving end uses this second auxiliary information to inform the sending end about its nonlinear distortion processing capabilities and related requirements, helping the sending end determine under what circumstances transmission is possible in the nonlinear region.

[0325] Step 2: The sending end determines to perform transmission in the non-linear region based on the first information and the second auxiliary information.

[0326] For example, the transmitting end determines to perform transmission in the nonlinear region based on transmission resources, modulation method, transmission power, energy saving requirements, and signal characteristics, combined with the requirements indicated by the second auxiliary information of the receiving end.

[0327] Step 3: The sending end sends the first auxiliary information.

[0328] This first auxiliary information is used to assist the receiver in performing nonlinear distortion processing.

[0329] The auxiliary receiver determines the transmission characteristic information of the transmitted signal, thereby assisting the receiver in performing nonlinear distortion processing;

[0330] Step 4: The receiving end adjusts the relevant parameters of the nonlinear distortion module based on the first auxiliary information.

[0331] These relevant parameters can be PA models, etc.;

[0332] Step 5: The sending end sends the transmission signal.

[0333] Step 6: The receiving end receives the transmitted signal and determines whether the transmitted signal sent by the sending end contains nonlinear characteristics, and then performs signal demodulation based on the determination result.

[0334] It should be noted that the steps in Figure 5 can be arbitrarily interchanged or combined, and the order of the steps in Figure 5 is not fixed. For example, in some embodiments, the transmitting end will first inform the receiving end of the first auxiliary information regarding nonlinear distortion processing, and then determine whether to perform transmission in the nonlinear region; for another example, the receiving end will send the second auxiliary information to the transmitting end only after receiving the first auxiliary information; for yet another example, the transmitting end will determine whether to perform transmission in the nonlinear region only before transmission; for yet another example, the receiving end will adjust the nonlinear distortion receiving parameters during or after signal reception to demodulate the signal; for yet another example, the transmitting end will send the first auxiliary information simultaneously with signal transmission.

[0335] In some embodiments, as shown in Figure 6, whether the transmitted signal received by the receiver has nonlinear characteristics affects the demodulation process. Therefore, before decoding the data, the receiver needs to determine whether the received signal has nonlinear characteristics, i.e., whether the received signal was transmitted by the transmitter in the nonlinear region of the PA. In some embodiments, the transmitter informs the receiver whether its transmitted signal was transmitted in the nonlinear region or the linear region. For example, it may notify the receiver by sending control information before or simultaneously with the data, so that the receiver can demodulate the data. In some embodiments, the transmitter informs the receiver of the associated time-frequency domain range / window / start position / end position for transmission in the nonlinear region or the linear region. For example, without additional notification or indication, the receiver may assume that the transmission is performed according to the agreed transmission method within the associated time-frequency domain range.

[0336] In some embodiments, when the receiving end is a base station, since the transmission parameters of the terminal are mostly scheduled by the base station, the base station can determine whether the terminal's transmission is performed in the nonlinear region or the linear region based on its own scheduling information, such as power control information and nonlinear region transmission indication information.

[0337] In some embodiments, the protocol is predefined, or the sender and receiver negotiate in advance the transmission methods for different types of transmitted signals. For example, certain reference signals, such as SRS and SSB, are always transmitted in the linear region, and certain control information formats, such as PUCCH format 0 and PUCCH format 2, are always transmitted in the linear region. In some embodiments, signals with a time domain length less than a certain threshold are transmitted in the linear region, while signals with a time domain length greater than a certain threshold are transmitted in the nonlinear region. This is because signals occupying a larger number of symbols are more likely to carry reference signals used for both channel estimation and nonlinear estimation simultaneously.

[0338] Through the above scheme, the receiving end can obtain the operating status and corresponding nonlinear characteristics of the transmitter's power amplifier (PA), thereby removing nonlinear interference from the received signal and achieving correct decoding. This scheme allows digital post-distortion technology to be applied to the receiving end, thus achieving energy saving at the transmitting end.

[0339] The signal processing method provided in this application can be executed by a signal processing device. This application uses an example of a signal processing device executing the signal processing method to illustrate the signal processing device provided in this application.

[0340] This application provides a signal processing apparatus. As an example, the signal processing apparatus may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0341] The signal processing device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0342] Specifically, referring to Figure 7, when the signal processing device is a terminal or a component within a terminal, or a network-side device or a component within a network-side device, the signal processing device 700 includes a first processing module 701 for performing a first operation, the first operation including at least one of the following:

[0343] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0344] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0345] The first information includes at least one of the following:

[0346] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0347] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0348] The energy-saving level or energy-saving mode of the transmitting end;

[0349] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0350] The second auxiliary information is information that assists the transmitting end in sending transmission signals.

[0351] Optionally, the information related to the transmission parameters or signal characteristics of the transmitted signal includes at least one of the following:

[0352] Power scheduling information for transmitted signals;

[0353] Information on changes in nonlinear parameters associated with the transmitted signal;

[0354] Time-frequency domain scheduling information for transmitted signals;

[0355] The peak-to-average power ratio (PAPR) of the transmitted signal is at least one of the range, mean, and expected value.

[0356] Optionally, the transmission characteristic information includes at least one of the following: power information of the transmitted signal, linear characteristic information, and nonlinear characteristic information.

[0357] Optionally, the linear characteristic information includes the linear state information of the power amplifier associated with the transmitted signal;

[0358] The nonlinear characteristic information includes the nonlinear state information of the power amplifier associated with the transmitted signal.

[0359] Optionally, the second auxiliary information includes at least one of the following:

[0360] Requirements for nonlinear transmission;

[0361] The nonlinear processing capability of the receiving end;

[0362] Recommended nonlinear power range for the receiver;

[0363] Recommended transmission time range, transmission time window, start time of nonlinear transmission, or end time of linear transmission at the receiving end;

[0364] Energy efficiency rating / energy efficiency mode of the receiver.

[0365] Optionally, the requirements for the nonlinear transmission include at least one of the following:

[0366] Vector amplitude error EVM is less than or equal to the first threshold;

[0367] Adjacent channel leakage ratio (ACLR) is less than or equal to the second threshold;

[0368] The range of variation of the nonlinear parameter is less than or equal to the third threshold;

[0369] The minimum power in the nonlinear region is greater than or equal to the fourth threshold.

[0370] The power at the 1dB compression point of the power amplifier associated with the transmitted signal is greater than or equal to the fifth threshold.

[0371] The power at the saturation point of the power amplifier associated with the transmitted signal is greater than or equal to the sixth threshold.

[0372] Optionally, the first processing module is used to:

[0373] The first auxiliary information is sent when the sending conditions are met; or, the first auxiliary information is sent periodically.

[0374] The sending conditions include at least one of the following:

[0375] Triggered by the sender or the receiver;

[0376] The nonlinear characteristics of the transmitting or receiving end cause the effective timer to fail;

[0377] The time during which the transmitting end does not send a transmission signal is greater than or equal to the seventh threshold.

[0378] The duration for which the transmitting end continuously sends transmission signals is greater than or equal to the eighth threshold.

[0379] The transmitting end detects a change in the nonlinear state of the power amplifier that is greater than or equal to the ninth threshold.

[0380] The bit error rate, retransmission rate, or non-acknowledgment (NACK) transmission rate at the receiving end is greater than or equal to the tenth threshold; or the data transmission accuracy rate, retransmission rate, or acknowledgment transmission rate at the receiving end is less than or equal to the eleventh threshold.

[0381] The sending end needs to send transmission signals;

[0382] The transmitting end receives the scheduling information for the transmitted signal;

[0383] The transmitting end experiences beam failure, beam recovery, beam switching, or power amplifier switching.

[0384] A state switch occurs at the sending end;

[0385] Cell handover occurred at the transmitting end.

[0386] Optionally, the first auxiliary information includes at least one of the following:

[0387] The second indication information is used to instruct the receiving end whether the transmitting end sends a reference signal to assist the receiving end in determining the transmission characteristic information of the transmission signal, or to instruct the receiving end whether the transmitting end sends information other than the second indication information in the first auxiliary information.

[0388] Information related to the power amplifier model associated with the transmitted signal;

[0389] Information about the power amplifier or equivalent power amplifier associated with the transmitted signal;

[0390] Digital predistortion (DPD) related information associated with transmitted signals;

[0391] The linear or nonlinear range of the power amplifier associated with the transmitted signal;

[0392] The power threshold, minimum power in the nonlinear region, 1dB compression point, or saturation point of the power amplifier associated with the transmitted signal;

[0393] The nonlinear operating point of the power amplifier associated with the transmitted signal;

[0394] The nonlinear region range associated with the nonlinear region operating point;

[0395] Information related to clipping or power back-off associated with the transmitted signal;

[0396] The first parameter associated with the transmitted signal and / or information on the change of the first parameter, wherein the first parameter includes at least one of port, beam, modulation scheme and power supply voltage.

[0397] The second parameter associated with the transmitted signal and / or information on the change of the second parameter, wherein the second parameter includes at least one of in-band distortion parameter and out-of-band transmission parameter;

[0398] Information related to changes in nonlinear parameters.

[0399] Optionally, the apparatus in this application embodiment further includes:

[0400] The second processing module is used to perform a second operation when the transmission feature information indicated by the first indication information is inconsistent with the transmission feature information indicated by the third indication information.

[0401] Wherein, the third indication information is the information in the first information other than the first indication information, and the second operation includes at least one of the following:

[0402] A transmission signal may be sent according to the transmission characteristic information indicated by the first indication information, or a transmission signal may be sent according to the transmission characteristic information indicated by the third indication information.

[0403] Send feedback information, which is used to instruct the receiving end to resend the first indication information or adjust the third indication information, and / or, the feedback information includes at least one of the first indication information and the third indication information recommended by the sending end.

[0404] In this embodiment, the transmitting end determines the transmission characteristic information of the transmitted signal based on the first information. Based on this transmission characteristic information, it can determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier, thereby determining whether the power amplifier is operating in the nonlinear region. This helps improve the efficiency of the power amplifier and achieves energy saving at the transmitting end. The transmitting end also sends first auxiliary information to assist the receiving end in determining the transmission characteristic information of the transmitted signal. This allows the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. This enables the receiving end to select a suitable demodulation method to process the transmitted signal, compensating for distortion and effectively ensuring the consistency between the signal transmitted and received. Furthermore, this method achieves the goal of processing the transmitted signal using digital post-distortion processing technology, thus contributing to energy saving at the transmitting end.

[0405] Referring to Figure 8, when the signal processing device is a network-side device or a component in a network-side device, or a terminal or a component in a terminal, the signal processing device 800 includes: a third processing module 801, used to process the received signal according to the target information;

[0406] The target information includes at least one of the following:

[0407] The second information is information related to the transmission characteristics of the received signal;

[0408] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0409] Optionally, the transmission characteristic information includes at least one of the power information, linear characteristic information, and nonlinear characteristic information of the received signal.

[0410] Optionally, the linear characteristic information includes the linear state information of the power amplifier associated with the received signal;

[0411] The nonlinear characteristic information includes the nonlinear state information of the power amplifier associated with the received signal.

[0412] Optionally, the second information includes at least one of the following:

[0413] The transmitting end sends a fourth indication information, which is used to indicate whether the received signal is transmitted in the nonlinear state of the power amplifier;

[0414] The pattern of the reference signal, wherein the pattern of the reference signal is related to the received signal in the nonlinear state;

[0415] Uplink transmission scheduling information;

[0416] Power information of the received signal.

[0417] Information about the type of signal received.

[0418] Optionally, the first auxiliary information includes at least one of the following:

[0419] The second indication information is used to instruct the receiving end whether the transmitting end sends a reference signal to assist the receiving end in determining the transmission characteristic information of the transmission signal, or to instruct the receiving end whether the transmitting end sends information other than the second indication information in the first auxiliary information.

[0420] Information related to the power amplifier model associated with the transmitted signal;

[0421] Information about the power amplifier or equivalent power amplifier associated with the transmitted signal;

[0422] Digital predistortion (DPD) related information associated with transmitted signals;

[0423] The linear or nonlinear range of the power amplifier associated with the transmitted signal;

[0424] The power threshold, minimum power in the nonlinear region, 1dB compression point, or saturation point of the power amplifier associated with the transmitted signal;

[0425] The nonlinear operating point of the power amplifier associated with the transmitted signal;

[0426] The nonlinear region range associated with the nonlinear region operating point;

[0427] Information related to clipping or power back-off associated with the transmitted signal;

[0428] The first parameter associated with the transmitted signal and / or information on the change of the first parameter, wherein the first parameter includes at least one of port, beam, modulation scheme and power supply voltage.

[0429] The second parameter associated with the transmitted signal and / or information on the change of the second parameter, wherein the second parameter includes at least one of in-band distortion parameter and out-of-band transmission parameter;

[0430] Information related to changes in nonlinear parameters.

[0431] Optionally, the apparatus in this application embodiment further includes:

[0432] The transmitting module is used to transmit second auxiliary information, which is information that assists the transmitting end in transmitting the transmission signal.

[0433] Optionally, the second auxiliary information includes at least one of the following:

[0434] Requirements for nonlinear transmission;

[0435] The nonlinear processing capability of the receiving end;

[0436] Recommended nonlinear power range for the receiver;

[0437] Recommended transmission time range, transmission time window, start time of nonlinear transmission, or end time of linear transmission at the receiving end;

[0438] Energy efficiency rating / energy efficiency mode of the receiver.

[0439] Optionally, the requirements for the nonlinear transmission include at least one of the following:

[0440] Vector amplitude error EVM is less than or equal to the first threshold;

[0441] Adjacent channel leakage ratio (ACLR) is less than or equal to the second threshold;

[0442] The range of variation of the nonlinear parameter is less than or equal to the third threshold;

[0443] The minimum power in the nonlinear region is greater than or equal to the fourth threshold.

[0444] The power at the 1dB compression point of the power amplifier associated with the transmitted signal is greater than or equal to the fifth threshold.

[0445] The power at the saturation point of the power amplifier associated with the transmitted signal is greater than or equal to the sixth threshold.

[0446] The signal processing apparatus provided in this application embodiment can implement the various processes implemented in the method embodiments of Figures 3 to 6 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0447] As shown in Figure 9, this application embodiment also provides a communication device 900, including a processor 901 and a memory 902. The memory 902 stores a program or instructions that can run on the processor 901. For example, when the communication device 900 is a terminal, the program or instructions executed by the processor 901 implement the various steps of the signal processing method embodiment executed by the transmitting end described above, and achieve the same technical effect. When the communication device 900 is a network-side device, the program or instructions executed by the processor 901 implement the various steps of the signal processing method embodiment executed by the receiving end described above, and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0448] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiments shown in FIG3 or FIG4. This terminal embodiment corresponds to the above-described method embodiments on the transmitting or receiving side, and all implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the signal processing device shown in FIG7 or FIG8. Specifically, FIG10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0449] The terminal 1000 includes, but is not limited to, at least some of the following components: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0450] Those skilled in the art will understand that the terminal 1000 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1010 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 10 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0451] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processor 10041 and a microphone 10042. The graphics processor 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0452] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1001 can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network-side device. Typically, the radio frequency unit 1001 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0453] The memory 1009 can be used to store software programs or instructions, as well as various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0454] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0455] In some embodiments, the processor 1010 is configured to perform a first operation, the first operation including at least one of the following:

[0456] Based on the first information, determine the transmission characteristic information of the transmitted signal;

[0457] Send first auxiliary information, which is used to assist the receiving end in determining the transmission characteristic information of the transmitted signal;

[0458] The first information includes at least one of the following:

[0459] Information related to the transmission parameters or signal characteristics of the transmitted signal;

[0460] The time-frequency domain position information of the reference signal, which is used to estimate the transmission characteristic information of the transmitted signal;

[0461] The energy-saving level or energy-saving mode of the transmitting end;

[0462] First indication information, the first indication information is sent by the receiving end, and the first indication information is used to indicate the transmission characteristic information of the transmitted signal;

[0463] The second auxiliary information is information that assists the transmitting end in sending transmission signals.

[0464] In this embodiment, the transmitting end determines the transmission characteristic information of the transmitted signal based on the first information. Based on this transmission characteristic information, it can determine whether the transmitted signal is transmitted in the linear region or the nonlinear region of the power amplifier, thereby determining whether the power amplifier is operating in the nonlinear region. This helps improve the efficiency of the power amplifier and achieves energy saving at the transmitting end. The transmitting end also transmits first auxiliary information to assist the receiving end in determining the transmission characteristic information of the transmitted signal. This allows the receiving end to determine whether the transmitted signal is transmitted in the linear region or the nonlinear region based on the transmission characteristic information. This enables the receiving end to select a suitable demodulation method to process the transmitted signal, compensating for distortion and effectively ensuring the consistency between the signal transmitted and received. Furthermore, this method achieves the goal of processing the transmitted signal using digital post-distortion processing technology, thus contributing to energy saving at the transmitting end.

[0465] In some embodiments, the processor 1010 is configured to process the received signal according to target information;

[0466] The target information includes at least one of the following:

[0467] The second information is information related to the transmission characteristics of the received signal;

[0468] The first auxiliary information is transmission characteristic information sent by the transmitting end to assist the receiving end in determining the received signal.

[0469] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the signal processing method in the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0470] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG3 or FIG4. This network-side device embodiment corresponds to the above-described sending or receiving end method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0471] Specifically, this application embodiment also provides a network-side device, which may be the signal processing device shown in FIG. 7 or FIG. 8. As shown in FIG. 11, the network-side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114, and a memory 115. The antenna 111 is connected to the radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be transmitted and sends it to the radio frequency device 112. The radio frequency device 112 processes the received information and transmits it through the antenna 111.

[0472] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 113, which includes a baseband processor.

[0473] The baseband device 113 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG11. One of the chips is, for example, a baseband processor, which is connected to the memory 115 via a bus interface to call the program or instructions in the memory 115 to execute the network-side device operation shown in the above method embodiment.

[0474] The network-side device may also include a network interface 116, such as a Common Public Radio Interface (CPRI).

[0475] In addition, the network-side device 1100 of this application embodiment also includes: a program or instructions stored in the memory 115 and executable on the processor 114. The processor 114 calls the program or instructions in the memory 115 to execute the methods executed by the modules shown in FIG7 or FIG8 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0476] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described signal processing method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0477] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0478] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above signal processing method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0479] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0480] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described signal processing method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0481] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the signal processing method executed by the transmitting end as described above, and the network-side device can be used to execute the steps of the signal processing method executed by the receiving end as described above.

[0482] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0483] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0484] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A signal processing method, comprising: a first operation performed by a transmitter, the first operation comprising at least one of: determining transmission characteristic information of a transmission signal according to first information; and transmitting first assistance information, the first assistance information being used to assist a receiver to determine the transmission characteristic information of the transmission signal; wherein the first information comprises at least one of: information related to a transmission parameter or a signal characteristic of the transmission signal; time-frequency domain position information of a reference signal, the reference signal being used to estimate the transmission characteristic information of the transmission signal; an energy saving level or an energy saving mode of the transmitter; first indication information, the first indication information being transmitted by the receiver, and the first indication information being used to indicate the transmission characteristic information of the transmission signal; and second assistance information, the second assistance information being used to assist the transmitter to transmit the transmission signal.

2. The method of claim 1, wherein, The information related to the transmission parameter or the signal characteristic of the transmission signal comprises at least one of: power scheduling information of the transmission signal; variation information of a nonlinear parameter associated with the transmission signal; time-frequency domain scheduling information of the transmission signal; and at least one of a peak-to-average power ratio (PAPR) range, a mean value and an expected value of the transmission signal.

3. The method of claim 1, wherein, The transmission characteristic information comprises at least one of power information, linear characteristic information and nonlinear characteristic information of the transmission signal.

4. The method of claim 3, wherein, The linear characteristic information comprises linear state information of a power amplifier associated with the transmission signal. The nonlinear characteristic information comprises nonlinear state information of the power amplifier associated with the transmission signal.

5. The method of claim 3 or 4, wherein, The second assistance information comprises at least one of: a requirement of nonlinear transmission; a nonlinear processing capability of the receiver; a nonlinear region power range recommended by the receiver; a nonlinear region transmission time range, a nonlinear region transmission time window, a start time of nonlinear region transmission or an end time of linear region transmission recommended by the receiver; and an energy saving level / energy saving mode of the receiver.

6. The method of claim 5, wherein, The requirement of nonlinear transmission comprises at least one of: a vector magnitude error (EVM) being less than or equal to a first threshold value; an adjacent channel leakage ratio (ACLR) being less than or equal to a second threshold value; a nonlinear parameter variation range being less than or equal to a third threshold value; a nonlinear region minimum power being greater than or equal to a fourth threshold value; a power corresponding to a 1 dB compression point of a power amplifier associated with the transmission signal being greater than or equal to a fifth threshold value; and a power corresponding to a saturation point of the power amplifier associated with the transmission signal being greater than or equal to a sixth threshold value.

7. The method according to any one of claims 1 to 6, wherein, The transmitting the first assistance information comprises: transmitting the first assistance information when a transmission condition is met, or periodically transmitting the first assistance information; wherein the transmission condition comprises at least one of: being triggered by the transmitter or being triggered by the receiver; a nonlinear characteristic validity timer of the transmitter or the receiver being invalid; a time during which the transmitter does not transmit the transmission signal being greater than or equal to a seventh threshold value; a time during which the transmitter continuously transmits the transmission signal being greater than or equal to an eighth threshold value; the transmitter detecting a variation value of a nonlinear state of a power amplifier being greater than or equal to a ninth threshold value. The error rate, retransmission rate, or transmission rate of non-acknowledgment message NACK of the receiving end is greater than or equal to a tenth threshold, or the data transmission accuracy, retransmission rate, or transmission rate of the acknowledgment message of the receiving end is less than or equal to an eleventh threshold; The sending end needs to send a transmission signal; The sending end receives scheduling information of the transmission signal; The sending end occurs beam failure or beam recovery or beam switching or power amplifier switching; The sending end occurs state switching; The sending end occurs cell switching.

8. The method according to any one of claims 1 to 7, wherein, The first auxiliary information includes at least one of the following: Second indication information, which is used to indicate to the receiving end whether the sending end sends a reference signal for assisting the receiving end to determine the transmission characteristic information of the transmission signal, or to indicate to the receiving end whether the sending end sends information other than the second indication information in the first auxiliary information; Power amplifier model related information associated with the transmission signal; Power amplifier information or equivalent power amplifier information associated with the transmission signal; Digital pre-distortion DPD related information associated with the transmission signal; Linear region range or nonlinear region range of the power amplifier associated with the transmission signal; Power division point, nonlinear region minimum power, 1 dB compression point, or saturation point of the power amplifier associated with the transmission signal; Nonlinear region operating point of the power amplifier associated with the transmission signal; Nonlinear region range associated with the nonlinear region operating point; Clipping or power backoff related information associated with the transmission signal; First parameter associated with the transmission signal and / or change information of the first parameter, the first parameter including at least one of port, beam, modulation mode, and power supply voltage; Second parameter associated with the transmission signal and / or change information of the second parameter, the second parameter including at least one of in-band distortion parameter and out-of-band emission parameter; Nonlinear parameter change related information.

9. The method according to any one of claims 1 to 8, wherein, The method further includes: In the case where the transmission characteristic information indicated by the first indication information is inconsistent with the transmission characteristic information indicated by the third indication information, performing a second operation; Wherein, the third indication information is information other than the first indication information in the first information, and the second operation includes at least one of the following: Sending the transmission signal according to the transmission characteristic information indicated by the first indication information, or sending the transmission signal according to the transmission characteristic information indicated by the third indication information; Sending feedback information, the feedback information being used to indicate the receiving end to resend the first indication information or adjust the third indication information, and / or the feedback information including at least one of the first indication information and the third indication information recommended by the sending end.

10. A signal processing method, comprising: The receiving end processes the received signal according to target information; Wherein, the target information includes at least one of the following: Second information, which is information related to the transmission characteristic information of the received signal; First auxiliary information, which is information sent by the sending end to assist the receiving end to determine the transmission characteristic information of the received signal.

11. The method of claim 10, wherein, The transmission characteristic information includes at least one of the power information, linear characteristic information, and nonlinear characteristic information of the received signal.

12. The method of claim 11, wherein, The linear characteristic information comprises linear state information of a power amplifier associated with the received signal. The nonlinear characteristic information comprises nonlinear state information of a power amplifier associated with the received signal.

13. The method of claim 11 or 12, wherein, The second information comprises at least one of the following: Fourth indication information sent by the sending end, the fourth indication information being used to indicate whether the received signal is in a nonlinear state of a power amplifier; A pattern of a reference signal, the pattern of the reference signal being related to whether the received signal is in the nonlinear state; Uplink transmission scheduling information; Power information of the received signal; Type information of the received signal.

14. The method according to any one of claims 10 to 13, wherein, The first auxiliary information comprises at least one of the following: Second indication information, the second indication information being used to indicate, to the receiving end, whether the sending end sends a reference signal used to assist the receiving end in determining transmission characteristic information of a transmission signal, or to indicate, to the receiving end, whether the sending end sends information other than the second indication information in the first auxiliary information; Power amplifier model related information associated with the transmission signal; Power amplifier information or equivalent power amplifier information associated with the transmission signal; Digital pre-distortion (DPD) related information associated with the transmission signal; Linear region range or nonlinear region range of a power amplifier associated with the transmission signal; Power division point, minimum power of a nonlinear region, 1 dB compression point or saturation point of a power amplifier associated with the transmission signal; Nonlinear region operating point of a power amplifier associated with the transmission signal; Nonlinear region range associated with the nonlinear region operating point; Clipping or power backoff related information associated with the transmission signal; First parameter associated with the transmission signal and / or change information of the first parameter, the first parameter comprising at least one of a port, a beam, a modulation mode and a power supply voltage; Second parameter associated with the transmission signal and / or change information of the second parameter, the second parameter comprising at least one of an in-band distortion parameter and an out-of-band emission parameter; Nonlinear parameter change related information.

15. The method according to any one of claims 10 to 14, wherein, Further comprising: Sending second auxiliary information, the second auxiliary information being used to assist the sending end in sending a transmission signal.

16. The method of claim 15, wherein, The second auxiliary information comprises at least one of the following: Requirement of nonlinear transmission; Nonlinear processing capability of the receiving end; Recommended nonlinear region power range of the receiving end; Recommended nonlinear region transmission time range, nonlinear region transmission time window, start time of nonlinear region transmission or end time of linear region transmission of the receiving end; Energy saving level / energy saving mode of the receiving end.

17. The method of claim 16, wherein, The requirement of nonlinear transmission comprises at least one of the following: Vector amplitude error (EVM) is less than or equal to a first threshold value; Adjacent channel leakage ratio (ACLR) is less than or equal to a second threshold value; Nonlinear parameter change range is less than or equal to a third threshold value; Minimum power of a nonlinear region is greater than or equal to a fourth threshold value; Power of a 1 dB compression point corresponding to a power amplifier associated with the transmission signal is greater than or equal to a fifth threshold value; Power of a saturation point corresponding to a power amplifier associated with the transmission signal is greater than or equal to a sixth threshold value.

18. A signal processing apparatus, comprising: a first processing module configured to perform a first operation, the first operation comprising at least one of the following: determining transmission characteristic information of a transmission signal according to first information; transmit first auxiliary information, the first auxiliary information being used for assisting a receiving end in determining transmission characteristic information of a transmission signal; The first information includes at least one of the following: Information related to transmission parameters or signal characteristics of the transmission signal; Time-frequency domain position information of a reference signal used for estimating the transmission characteristic information of the transmission signal; Energy-saving level or energy-saving mode of the transmitting end; First indication information, the first indication information being sent by the receiving end and being used for indicating the transmission characteristic information of the transmission signal; Second auxiliary information, the second auxiliary information being information used for assisting the transmitting end in transmitting the transmission signal.

19. The apparatus of claim 18, wherein, The information related to transmission parameters or signal characteristics of the transmission signal includes at least one of the following: Power scheduling information of the transmission signal; Change information of a nonlinear parameter associated with the transmission signal; Time-frequency domain scheduling information of the transmission signal; At least one of a peak-to-average power ratio (PAPR) range, an average value and an expected value of the transmission signal.

20. The apparatus of claim 18, wherein, The transmission characteristic information includes at least one of power information, linear characteristic information and nonlinear characteristic information of the transmission signal.

21. The apparatus of claim 20, wherein, The linear characteristic information includes linear state information of a power amplifier associated with the transmission signal. The nonlinear characteristic information includes nonlinear state information of the power amplifier associated with the transmission signal.

22. The apparatus of claim 20 or 21, wherein, The second auxiliary information includes at least one of the following: Requirement of nonlinear transmission; Nonlinear processing capability of the receiving end; Nonlinear region power range recommended by the receiving end; Nonlinear region transmission time range, nonlinear region transmission time window, start time of nonlinear region transmission or end time of linear region transmission recommended by the receiving end; Energy-saving level / energy-saving mode of the receiving end.

23. The apparatus of claim 22, wherein, The requirement of nonlinear transmission includes at least one of the following: Vector magnitude error (EVM) is less than or equal to a first threshold value; Adjacent channel leakage ratio (ACLR) is less than or equal to a second threshold value; Nonlinear parameter change range is less than or equal to a third threshold value; Nonlinear region minimum power is greater than or equal to a fourth threshold value; Power of a 1 dB compression point corresponding to the power amplifier associated with the transmission signal is greater than or equal to a fifth threshold value; Power of a saturation point corresponding to the power amplifier associated with the transmission signal is greater than or equal to a sixth threshold value.

24. The apparatus of any one of claims 18 to 23, wherein, The first processing module is configured to: transmit the first auxiliary information when a transmission condition is met, or periodically transmit the first auxiliary information; The transmission condition includes at least one of the following: triggered by the transmitting end or triggered by the receiving end; nonlinear characteristic validity timer of the transmitting end or the receiving end is invalid; time during which the transmitting end does not transmit the transmission signal is greater than or equal to a seventh threshold value; time during which the transmitting end continuously transmits the transmission signal is greater than or equal to an eighth threshold value; the transmitting end detects that a change value of nonlinear state of a power amplifier is greater than or equal to a ninth threshold value; bit error rate, retransmission rate or transmission rate of a non-acknowledgement (NACK) message of the receiving end is greater than or equal to a tenth threshold value, or data transmission correctness rate, retransmission rate or transmission rate of an acknowledgement (ACK) message of the receiving end is less than or equal to an eleventh threshold value; the transmitting end needs to transmit the transmission signal; the transmitting end receives scheduling information of the transmission signal; Beam failure occurs at the transmitting end or beam recovery or beam switching or power amplifier switching occurs at the transmitting end; State switching occurs at the transmitting end; Cell switching occurs at the transmitting end.

25. The apparatus of any one of claims 18 to 24, wherein, The first auxiliary information includes at least one of the following: Second indication information, the second indication information is used to indicate the receiving end whether the transmitting end transmits the reference signal used to assist the receiving end to determine the transmission characteristic information of the transmission signal, or to indicate the receiving end whether the transmitting end transmits the information in the first auxiliary information except the second indication information; Power amplifier model related information associated with the transmission signal; Power amplifier information or equivalent power amplifier information associated with the transmission signal; Digital pre-distortion (DPD) related information associated with the transmission signal; Linear region range or non-linear region range of the power amplifier associated with the transmission signal; Power dividing point, non-linear region minimum power, 1 dB compression point or saturation point of the power amplifier associated with the transmission signal; Non-linear region operating point of the power amplifier associated with the transmission signal; Non-linear region range associated with the non-linear region operating point; Clipping or power back-off related information associated with the transmission signal; First parameter associated with the transmission signal and / or change information of the first parameter, the first parameter including at least one of port, beam, modulation mode and power supply voltage; Second parameter associated with the transmission signal and / or change information of the second parameter, the second parameter including at least one of in-band distortion parameter and out-of-band emission parameter; Non-linear parameter change related information.

26. The apparatus of any one of claims 20 to 25, wherein, Further comprising: A second processing module, configured to perform a second operation in a case where the transmission characteristic information indicated by the first indication information is inconsistent with the transmission characteristic information indicated by the third indication information; Wherein, the third indication information is information in the first information except the first indication information, and the second operation includes at least one of the following: Transmit the transmission signal according to the transmission characteristic information indicated by the first indication information, or transmit the transmission signal according to the transmission characteristic information indicated by the third indication information; Send feedback information, the feedback information is used to indicate the receiving end to resend the first indication information or adjust the third indication information, and / or the feedback information includes at least one of the first indication information and the third indication information recommended by the transmitting end.

27. A signal processing apparatus, comprising: A third processing module, configured to process the receiving signal according to target information; Wherein, the target information includes at least one of the following: Second information, the second information is information related to the transmission characteristic information of the receiving signal; First auxiliary information, the first auxiliary information is information transmitted by the transmitting end to assist the receiving end to determine the transmission characteristic information of the receiving signal.

28. The apparatus of claim 27, wherein, The transmission characteristic information includes at least one of the power information, the linear characteristic information and the non-linear characteristic information of the receiving signal.

29. The apparatus of claim 28, wherein, The linear characteristic information includes the linear state information of the power amplifier associated with the receiving signal; The non-linear characteristic information includes the non-linear state information of the power amplifier associated with the receiving signal.

30. The apparatus of claim 28 or 29, wherein, The second information includes at least one of the following: The fourth indication information sent by the sending end, the fourth indication information being used for indicating whether the receiving signal is sent in a nonlinear state of a power amplifier; A pattern of the reference signal, the pattern of the reference signal being related to whether the receiving signal is in the nonlinear state; Uplink transmission scheduling information; Power information of the receiving signal; Type information of the receiving signal.

31. The apparatus of any one of claims 27 to 30, wherein, The first auxiliary information includes at least one of the following: Second indication information, the second indication information being used for indicating, to the receiving end, whether the sending end sends a reference signal used for assisting the receiving end in determining transmission characteristic information of a transmission signal, or indicating, to the receiving end, whether the sending end sends information other than the second indication information in the first auxiliary information; Power amplifier model related information associated with the transmission signal; Power amplifier information or equivalent power amplifier information associated with the transmission signal; Digital pre-distortion (DPD) related information associated with the transmission signal; Linear region range or nonlinear region range of a power amplifier associated with the transmission signal; Power division point, minimum power of a nonlinear region, 1 dB compression point or saturation point of a power amplifier associated with the transmission signal; Nonlinear region operating point of a power amplifier associated with the transmission signal; Nonlinear region range associated with the nonlinear region operating point; Clipping or power backoff related information associated with the transmission signal; First parameter associated with the transmission signal and / or change information of the first parameter, the first parameter including at least one of a port, a beam, a modulation mode and a power supply voltage; Second parameter associated with the transmission signal and / or change information of the second parameter, the second parameter including at least one of an in-band distortion parameter and an out-of-band emission parameter; Nonlinear parameter change related information.

32. The apparatus of any one of claims 27 to 31, wherein, Further comprising: A sending module, configured to send second auxiliary information, the second auxiliary information being information used for assisting the sending end in sending a transmission signal.

33. The apparatus of claim 32, wherein, The second auxiliary information includes at least one of the following: Requirement of nonlinear transmission; Nonlinear processing capability of the receiving end; Recommended nonlinear region power range of the receiving end; Recommended nonlinear region transmission time range, nonlinear region transmission time window, start time of nonlinear region transmission or end time of linear region transmission of the receiving end; Energy saving level / energy saving mode of the receiving end.

34. The apparatus of claim 33, wherein, The requirement of nonlinear transmission includes at least one of the following: Vector amplitude error (EVM) is less than or equal to a first threshold value; Adjacent channel leakage ratio (ACLR) is less than or equal to a second threshold value; Nonlinear parameter change range is less than or equal to a third threshold value; Minimum power of a nonlinear region is greater than or equal to a fourth threshold value; Power of a 1 dB compression point corresponding to a power amplifier associated with the transmission signal is greater than or equal to a fifth threshold value; Power of a saturation point corresponding to a power amplifier associated with the transmission signal is greater than or equal to a sixth threshold value.

35. A communication device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the signal processing method according to any one of claims 1 to 9, or to implement the steps of the signal processing method according to any one of claims 10 to 17.

36. A readable storage medium, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the signal processing method according to any one of claims 1 to 9, or implement the steps of the signal processing method according to any one of claims 10 to 17.

37. A computer program product comprising computer instructions, which, when executed by a processor, implement the steps of the signal processing method according to any one of claims 1 to 9, or implement the steps of the signal processing method according to any one of claims 10 to 17.

38. A chip, comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to run a program or instructions, which implement the steps of the signal processing method according to any one of claims 1 to 9, or implement the steps of the signal processing method according to any one of claims 10 to 17.

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