WO2026021458A1 - 信号传输方法、信号处理方法、装置及相关设备 - Google Patents
信号传输方法、信号处理方法、装置及相关设备Info
- Publication number
- WO2026021458A1 WO2026021458A1 PCT/CN2025/109973 CN2025109973W WO2026021458A1 WO 2026021458 A1 WO2026021458 A1 WO 2026021458A1 CN 2025109973 W CN2025109973 W CN 2025109973W WO 2026021458 A1 WO2026021458 A1 WO 2026021458A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reference signal
- signal
- transmission
- transmitted
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
Definitions
- This application relates to the field of communication technology, and more specifically, to a signal transmission method, signal processing method, apparatus, and related equipment.
- This application provides a signal transmission method, signal processing method, apparatus, and related equipment, which can solve the problem in existing signal transmission schemes that it is difficult to ensure the consistency between the signal received by the receiver and the signal sent by the transmitter.
- a signal transmission method executed by a transmitting end, the method comprising:
- a reference signal is transmitted, which is used to estimate the transmission characteristic information of the transmitted signal.
- a signal processing method executed by a receiving end, the method comprising:
- a reference signal is received, which is used to assist the receiver in estimating the transmission characteristic information of the received transmitted signal
- the transmitted signal is received and processed based on its transmission characteristic information.
- a signal transmission device comprising:
- the first transmitting module is used to transmit a reference signal, which is used to estimate the transmission characteristic information of the transmitted signal.
- a signal processing apparatus comprising:
- the first receiving module is used to receive a reference signal, which is used to assist the receiving end in estimating the transmission characteristic information of the received transmission signal.
- the processing module is used to receive and process the transmitted signal according to the transmission characteristic information of the transmitted signal.
- a signal transmission apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or a signal processing apparatus is provided, the apparatus being configured to perform the steps of the method described in the second aspect.
- a 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.
- a terminal including a processor and a communication interface, wherein the communication interface is used to transmit a reference signal, the reference signal being used to estimate transmission characteristic information of a transmitted signal; or, the communication interface is used to receive a reference signal, the reference signal being used to assist a receiving end in estimating transmission characteristic information of a received transmitted signal; the processor is used to perform reception processing on the transmitted signal based on the transmission characteristic information of the transmitted signal.
- a 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.
- a network-side device including a processor and a communication interface, wherein the communication interface is used to transmit a reference signal, the reference signal being used to estimate transmission characteristic information of a transmitted signal; or, the communication interface is used to receive a reference signal, the reference signal being used to assist a receiving end in estimating transmission characteristic information of a received transmitted signal; the processor is used to perform reception processing on the transmitted signal based on the transmission characteristic information of the transmitted signal.
- a readable storage medium 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.
- a wireless communication system 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.
- a 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.
- a computer program/program product is provided, which is stored in a storage medium and is executed by at least one processor to perform the steps of the method as described in the first or second aspect.
- a reference signal is transmitted.
- the reference signal is used to estimate the transmission characteristic information of the transmitted signal, so that the receiving end can estimate the transmission characteristic information of the transmitted signal based on the reference signal. This facilitates the receiving end to perform corresponding reception processing on the transmitted signal based on the transmission characteristic information to compensate for the distortion of the received transmitted signal, thereby effectively ensuring the consistency between the signal transmitted by the transmitting end and the signal received by the receiving end.
- Figure 1 shows a structural diagram of a communication system applicable to an embodiment of this application
- Figure 2 shows a schematic diagram of the nonlinear characteristics of the power amplifier
- FIG. 3 shows a flowchart of one embodiment of the signal transmission method of this application
- Figure 4 shows one of the interactive schematic diagrams of the signal transmission method according to an embodiment of this application
- Figure 5 shows a second interactive schematic diagram of the signal transmission method according to an embodiment of this application.
- Figure 6 shows one of the schematic diagrams of the transmission of reference signals according to an embodiment of this application.
- Figure 7 shows a second schematic diagram of the transmission of the reference signal according to an embodiment of this application.
- Figure 8 shows a second schematic flowchart of the signal transmission method according to an embodiment of this application.
- FIG. 9 is a schematic flowchart of the signal processing method according to an embodiment of this application.
- Figure 10 shows a schematic diagram of the module of the signal transmission device according to an embodiment of this application.
- FIG. 11 shows a schematic diagram of the module of the signal transmission device according to an embodiment of this application.
- Figure 12 shows a structural block diagram of a communication device according to an embodiment of this application.
- Figure 13 shows a structural block diagram of the terminal according to an embodiment of this application.
- Figure 14 shows a structural block diagram of the network-side device according to an embodiment of this application.
- first and second 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.
- “or” in this application indicates at least one of the connected objects.
- 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.
- 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.
- 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.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- NR New Radio
- FIG. 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 a 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), or augmented reality device (AR).
- UE user equipment
- PDA personal digital assistant
- UMPC ultra-mobile personal computer
- MID mobile internet device
- AR augmented reality device
- terminal-side devices such as AR (Augmented Reality), Virtual Reality (VR) devices, robots, wearable devices, flight vehicles, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines.
- Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, and smart clothing.
- Vehicle-mounted devices can also be referred to as vehicle terminals, vehicle controllers, vehicle modules, vehicle components, vehicle chips, or vehicle units.
- Network-side equipment 12 may include access network equipment or core network equipment.
- 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.
- WLAN Wireless Local Area Network
- WiFi Wireless Fidelity
- a base station can be referred to as a 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), or Extended Service Set (BSS).
- NB Node B
- eNB Evolved Node B
- gNB Next Generation Node B
- NR Node B New Radio Node B
- Access Point Relay Base Station
- RBS Serving Base Station
- BTS Base Transceiver Station
- BSS Base Station
- BSS Basic Service Set
- BSS Basic Service Set
- BSS Basic Service Set
- base station can refer to any suitable term in the field, such as Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit/Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (e.g., satellite or high-altitude platform station), or any other suitable term in the field, as long as the same technical effect is achieved.
- ESS Service Set
- HNB Home Node B
- TRP Transmit/Receive Point
- NTN Non-Terrestrial Network
- satellite or high-altitude platform station any other suitable term in the field, as long as the same technical effect is achieved.
- the term is not limited to any specific technical term. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.
- 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), and Home Subscriber Server (SS).
- MME Mobility Management Entity
- AMF Access and Mobility Management Function
- SMF Session Management Function
- UPF User Plane Function
- PCF Policy Control Function
- PCF Policy and Charging Rules Function
- EASDF Edge Application Server Discovery Function
- UDM Unified Data Management
- UDR Unified Data Repository
- SS Home Subscriber Server
- HSS network service providers
- CNC centralized network configuration
- NEF network exposure function
- L-NEF local NEF
- BSF binding support function
- AF application function
- LMF location management function
- GMLC gateway mobile location center
- NWDAF network data analytics function
- NTN non-terrestrial network equipment
- 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).
- a platform e.g., a cloud platform
- PA Power Amplifier
- PAs Power amplifiers
- 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.
- 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.
- 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.
- 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.
- 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%.
- 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.
- 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 in output power, but the increase is not as great as the increase in output power.
- Power back-off 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.
- 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.
- digital post-distortion technology performs post-processing on the signal at the receiving end, that is, 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 efficiency of the power amplifier.
- n represents the nth sampling point in the time domain
- d represents the memory depth of PA
- p represents the order
- c represents the kernel function of the series.
- the nonlinear characteristics in the signal can be simply considered to be composed of memory depth, order, and kernel function.
- the receiver can establish a mathematical model of the PA and then remove the nonlinear distortion terms in the signal.
- this application embodiment provides a signal transmission method, executed by a transmitting end, the method including:
- Step 301 Send a reference signal, which is used to estimate the transmission characteristic information of the transmitted signal.
- the sending end is a terminal or a network-side device, and the network-side device may be a base station.
- the transmitting end sends a reference signal to the receiving end so that the receiving end can estimate the transmission characteristic information of the transmitted signal sent by the transmitting end based on the reference signal.
- the receiving end can be a terminal or a network-side device.
- 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.
- the transmission signal includes at least one of a reference signal, a data signal, and a control signal.
- the reference signal includes at least one of the following:
- DMRS Demodulation Reference Signal
- SRS Sounding Reference Signal
- Synchronization Signal and PBCH block (SSB);
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- TRS Tracking Reference Signal
- PTRS Phase Tracking Reference Signal
- CSI-RS Channel State Information Reference Signal
- the transmitting end sends a reference signal, which is used to estimate the transmission characteristic information of the transmitted signal, so that the receiving end can estimate the transmission characteristic information of the transmitted signal based on the reference signal.
- a reference signal which is used to estimate the transmission characteristic information of the transmitted signal
- the receiving end can estimate the transmission characteristic information of the transmitted signal based on the reference signal.
- the reference signal includes at least one of the following:
- the first reference signal is used to estimate the channel characteristic information of the transmitted signal
- the second reference signal is used to estimate the nonlinear characteristics of the transmitted signal.
- the transmission power of the first reference signal is different from the transmission power of the second reference signal.
- the first reference signal is also used to estimate at least one of the following: adjacent channel interference information, receiver nonlinear distortion information, and nonlinear distortion information generated by devices in the transmitter other than the power amplifier.
- the nonlinear characteristic information of the transmitting end changes slowly. Therefore, the receiving end does not need to acquire the nonlinear characteristic information in real time for data demodulation. Instead, it can perform data demodulation based on previously measured nonlinear characteristic information.
- the transmitting end can transmit only the first reference signal when transmitting the transmission signal. Alternatively, in some embodiments, when the transmission signal is transmitted in the linear region, only the first reference signal can also be transmitted.
- the transmitting end may transmit the first reference signal and the second reference signal simultaneously with the transmitted signal. In some embodiments, where channel characteristic information can be obtained based on the transmitted signal, the transmitting end may also transmit only the second reference signal.
- the receiving end can determine the channel characteristic information and/or nonlinear characteristic information of the transmitted signal based on at least one of the first parameter signal and the second reference signal. Then, it can perform digital post-distortion processing on the transmitted signal based on this channel characteristic information and/or nonlinear characteristic information, removing the nonlinear distortion term in the received transmitted signal and compensating for the distortion of the received transmitted signal, thereby effectively ensuring the consistency between the signal transmitted by the transmitting end and the signal received by the receiving end. Furthermore, the solution of this application allows digital post-distortion technology to be applied to the receiving end, enabling the power amplifier at the transmitting end to operate at its saturation point, achieving maximum power amplifier efficiency, and thus realizing energy saving at the transmitting end.
- the nonlinear characteristic information of the transmitted signal is the nonlinear state of the power amplifier associated with the transmitted signal.
- the nonlinear characteristic information of the transmitted signal further includes at least one of the following: the model of the power amplifier associated with the transmitted signal, the kernel function (series kernel) of the power amplifier associated with the transmitted signal, the memory depth of the power amplifier associated with the transmitted signal, the operating point of the power amplifier associated with the transmitted signal transmitting the transmitted signal, and the average power of the power amplifier associated with the transmitted signal transmitting the transmitted signal.
- 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.
- the associated power amplifier may be an equivalent power amplifier.
- 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.
- the receiving end can determine whether the power amplifier of the transmitting end is operating in a nonlinear state based on the second reference signal, thereby determining whether the received signal contains a nonlinear distortion term, and then selecting a suitable signal demodulation method to demodulate the data.
- the first reference signal is transmitted when the power amplifier at the transmitting end is in a linear state
- the second reference signal is transmitted when the power amplifier at the transmitting end is in a nonlinear state.
- the channel characteristic information can be estimated first using the first reference signal.
- the transmitted signal is transmitted in the nonlinear region, and the transmitted signal will be affected by both the channel and the nonlinear characteristics.
- the second reference signal will also be affected by both the channel and the nonlinear characteristics. Therefore, based on the channel characteristic information estimated by the first reference signal, the nonlinear characteristic information can be estimated based on the second reference signal.
- the signal transmitted in the nonlinear region is denoted as x
- the channel characteristic information is denoted as H
- the nonlinear characteristic information is denoted as G
- the interference caused by other cells or various factors is denoted as R
- the nonlinear characteristic information G can be obtained, thereby realizing digital post-distortion processing.
- the method in this application embodiment further includes:
- Send first indication information which is used to indicate a first difference between the transmission power of the first reference signal and the transmission power of the second reference signal, or to indicate a second difference between the energy per resource element (EPRE) corresponding to the first reference signal and the EPRE corresponding to the second reference signal, or to indicate a third difference between the transmission bandwidth of the first reference signal and the transmission bandwidth of the second reference signal, or to indicate the absolute value of the transmission power of the first reference signal or the absolute value of the transmission power of the second reference signal, or to indicate the absolute value of the EPRE corresponding to the first reference signal or the absolute value of the EPRE corresponding to the second reference signal, or to indicate the absolute value of the transmission bandwidth of the first reference signal or the absolute value of the transmission bandwidth of the second reference signal.
- EPRE energy per resource element
- the content indicated by the first indication information may also be predefined by the protocol or configured by the network-side device.
- the aforementioned first indication information can be carried through channels such as RRC, MAC CE, PDCCH, or PUCCH.
- the receiving end can obtain the power-related information of the first reference signal and the second reference signal, and then, based on the power-related information, the receiving end can determine the linear characteristic information corresponding to the first reference signal and/or the nonlinear characteristic information corresponding to the second reference signal.
- the first reference signal and the second reference signal are spaced apart by K time units, where K is an integer.
- K time units are set between the first reference signal and the second reference signal, i.e., there is an interval symbol between the two reference signals, so as to facilitate automatic gain control (AGC) at the receiving end.
- the interval symbol may transmit a partial or complete repetition of the subsequent transmission reference signal or the previous transmission reference signal, or it may not be transmitted at all.
- the aforementioned time units may include one or more symbols, time slots, radio subframes, radio frames, milliseconds, and seconds.
- the first reference signal and the second reference signal satisfy at least one of the following:
- the bandwidth of the first reference signal is less than the bandwidth of the second reference signal.
- the bandwidth of the first reference signal is smaller than that of the second reference signal.
- the transmission power of the first reference signal can be reduced, making it easier to transmit within the linear region of the PA.
- the difference between the bandwidth of the first reference signal and the bandwidth of the second reference signal can be indicated by the transmitting end, predefined by the protocol, or preconfigured by the network side.
- the bandwidth difference can be the difference between the bandwidth of one side and the bandwidth of the other side.
- the center frequency of the first reference signal is the same as the center frequency of the second reference signal.
- the time domain position corresponding to the first reference signal is different from the time domain position corresponding to the second reference signal.
- the sign corresponding to the first reference signal is different from the sign corresponding to the second reference signal.
- the sequence corresponding to the first reference signal is different from the sequence corresponding to the second reference signal.
- the first reference signal and the second reference signal can correspond to different reference signal types.
- the first reference signal and the second reference signal correspond to different sequences and can have different estimation performance, making the setting of the first reference signal and the second reference signal more flexible.
- the first reference signal is a comb-like structure.
- the transmission power of the first reference signal can be reduced, making it easier to transmit within the linear region of the PA.
- the first reference signal occupies L frequency units every N frequency units.
- the nonlinear characteristic information of a certain transmission power point can be estimated.
- the reference signal is a non-constant envelope signal
- the nonlinear characteristic information of the transmission power within a certain range can be estimated.
- the transmission period of the reference signal is determined by the transmitting end or the receiving end.
- the reference signal may be triggered by the transmitting end or by the receiving end.
- A1 The nonlinear characteristics of the transmitting or receiving end have caused the effective timer to fail.
- A2 The time during which the transmitting end does not send a transmission signal is greater than the first threshold.
- A4 The change in the nonlinear state of the power amplifier PA is greater than the third threshold.
- This nonlinear state can be caused by factors such as temperature and memory effects. Significant temperature changes will affect the nonlinear state of the PA. Changes in memory depth will also affect the nonlinear state of the PA.
- A5 The bit error rate, retransmission rate, or non-acknowledgment (NACK) transmission rate at the receiving end is greater than the fourth threshold, or the data transmission accuracy, retransmission rate, or acknowledgment transmission rate at the receiving end is less than the fifth threshold.
- NACK non-acknowledgment
- the triggering event corresponding to A5 may also be that the offset value of the bit error rate, retransmission rate or transmission rate of non-acknowledgment message NACK at the receiving end is greater than a preset threshold, or that the offset value of the data transmission accuracy, retransmission rate or transmission rate of acknowledgment message at the receiving end is greater than a preset threshold.
- A6 The sending end needs to send transmission signals.
- a reference signal is sent first to facilitate the receiver in estimating the nonlinear characteristic information in order to receive the transmission signal.
- A7 The sending end receives the scheduling information for transmitting the signal.
- A8 Beam failure, beam recovery, beam switching, or PA switching occurred at the transmitting end.
- 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.
- 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.
- A9 A state switch has occurred at the sending end.
- 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 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.
- A10 Cell handover has occurred at the transmitting end.
- the method further includes:
- the reference signals at different resource locations correspond to different transmission parameters
- the transmission parameters include at least one of beam, transmission configuration indicator (TCI), power amplifier, and power amplifier set (PA set);
- the transmission power of different reference signals corresponding to the same transmission parameter may be different.
- the aforementioned resource locations include at least one of time-domain resource locations and frequency-domain resource locations.
- the repeated transmission of the reference signal includes: transmitting it K times within one transmission cycle.
- the time-domain interval of the repeatedly transmitted reference signal is J time-domain units.
- the receiving end by repeatedly transmitting the reference signal, the receiving end can be assisted in estimating the nonlinear characteristic information of the power amplifier at different operating points in the nonlinear region, and the receiving end can also be assisted in estimating the nonlinear characteristic information of different power amplifiers at the transmitting end.
- transmitting the reference signal includes:
- the reference signal is transmitted on a first resource, which is associated with the resource transmitting the signal;
- the reference signal may be transmitted on a second resource that is not associated with the resource from which the transmission signal is transmitted.
- the reference signal and the transmitted signal can be correlated.
- the reference signal and the transmitted signal can be connected in the time domain, or the time domain interval can be fixed, or the time domain interval can be explicitly/implicitly indicated.
- they can be transmitted on the same resource.
- the reference signal and the transmitted signal can be transmitted on the same resource so that the receiving end can obtain the nonlinear characteristic information corresponding to the transmitted signal based on the reference signal.
- the reference signal and the transmitted signal can also be transmitted on unrelated resources, that is, the transmission of the reference signal and the transmitted signal is independent of each other.
- the reference signal can be transmitted periodically, regardless of how the transmitted signal is transmitted, so that the receiving end can periodically obtain the nonlinear characteristic information corresponding to the transmitting end based on the reference signal.
- the downlink reference signal when the reference signal is transmitted periodically, the downlink reference signal can reuse the PSS, and the uplink reference signal can reuse the SRS.
- the reference signal can reuse the DMRS.
- the sequence of the reference signal is related to the ID of the terminal.
- the frequency domain range of the reference signal is greater than the frequency domain range of the transmitted signal.
- the base station informs the terminal of the frequency range of the reference signal through control information.
- the base station informs the terminal of the range within which the reference signal should be transmitted through scheduling information.
- B3 Directly indicates the frequency range of the reference signal through a bitmap.
- a bitmap indicates on which Physical Resource Blocks (PRBs) reference signals are sent.
- PRBs Physical Resource Blocks
- This offset value indicates the offset between the frequency domain range of the reference signal and the frequency domain range of the signal. For example, it indicates the offset of the frequency domain range of the reference signal relative to the highest, center, or lowest point of the signal's frequency domain.
- the unit of this offset value is one or more subcarriers, PRB, Precoding Resource Block Group (PRG), Resource Block Group (RBG), Resource Block Set (RB set), or subband.
- transmitting the reference signal includes:
- the pattern of the reference signal can be used to determine whether the reference signal is transmitted periodically or aperiodically, or whether the reference signal and the transmission signal are transmitted on the same resource.
- the first information includes at least one of the following:
- the scheduling-related information includes at least one of the following:
- Second item Uplink power control information.
- the accompanying reference signal can only be sent when the number of symbols exceeds a certain threshold.
- Item 7 Error Vector Magnitude (EVM) or Adjacent Channel Leakage Ratio (ACLR) indicated by scheduling information.
- EVM Error Vector Magnitude
- ACLR Adjacent Channel Leakage Ratio
- a reference signal or accompanying reference signal is only sent when the EVM requirement is below a certain threshold. Conversely, no reference signal or accompanying reference signal is sent when the ACLR requirement is below a certain threshold.
- C3 Indication information, which is used to indicate the pattern of the reference signal.
- C4 Type of transmitted signal.
- a reference signal is not transmitted when the transmitted signal is a target signal that includes at least one of the following:
- the transmitter when transmitting the target signal, the transmitter can consider transmitting it in the linear region or transmitting a separate reference signal.
- C5 Vector Amplitude Error (EVM) / Adjacent Channel Leakage Ratio (ACLR) requirement.
- ELM Vector Amplitude Error
- ACLR Adjacent Channel Leakage Ratio
- a reference signal or accompanying reference signal may be sent only when the EVM requirement is below a certain threshold. In this case, nonlinear characteristic information is needed to compensate for the nonlinear distortion of the transmitted signal, thereby reducing the EVM.
- the ACLR requirement is below a certain threshold, no reference signal or accompanying reference signal may be sent.
- the ACLR requirement is high, it is not suitable for the transmitter to perform transmission in the nonlinear region, therefore, it is not necessary to send a reference signal to estimate the nonlinear characteristic information.
- the nonlinear characteristic information of the transmitting end changes slowly, so the receiving end does not need to acquire the nonlinear characteristic information in real time for data demodulation. Instead, it can perform data demodulation based on the previously measured nonlinear characteristic information, as shown in Figure 4.
- the process of this embodiment includes:
- Step 1 The transmitting end sends a reference signal.
- the transmitting end can periodically send reference signals, or send reference signals in a semi-static manner, or send reference signals non-periodically.
- Step 2 The receiver estimates the nonlinear characteristic information of the transmitter based on the reference signal sent by the transmitter.
- Step 3 The receiver adjusts the PA model and other relevant receiving parameters used for data demodulation based on the estimated nonlinear characteristic information.
- Step 4 The sending end sends the transmission signal.
- Step 5 The receiving end determines whether the transmitted signal is transmitted in the nonlinear region. If it is transmitted in the nonlinear region, the received signal is demodulated based on the adjusted receiving parameters.
- the steps in the above process can be arbitrarily changed or omitted.
- the receiving end can adjust its receiving parameters only after determining that the transmission is in the nonlinear region.
- the receiving end may not need to determine whether the transmission is in the nonlinear region, or it may assume that all data received in the following period of time is in the nonlinear region after receiving the reference signal.
- the transmitting end transmits the reference signal along with the data signal, as shown in Figure 5.
- the process includes:
- Step 1 The transmitting end simultaneously sends a reference signal and a transmission signal
- Step 2 The receiving end determines whether the reference signal and the transmitted signal are transmitted in the nonlinear region
- Step 3 If the reference signal and the transmitted signal are transmitted in the nonlinear region, nonlinear characteristic information is estimated based on the reference signal, and then the PA model and other related receiving parameters used for data demodulation are adjusted.
- Step 4 The receiving end demodulates the data based on nonlinear characteristic information or adjusted receiving parameters
- the transmitting end when it transmits the transmission signal, it also transmits a reference signal along with the transmission information, thereby solving the problem of channel estimation and nonlinear characteristic estimation required for data demodulation, and enabling the power amplifier efficiency of the transmitting end to gain.
- the transmitting end simultaneously transmits a first reference signal and a second reference signal.
- the first reference signal is used by the receiving end to estimate channel characteristic information
- the second reference signal is used by the receiving end to estimate the nonlinear characteristics of the power amplifier.
- the reference signal only contains the first reference signal
- the second reference signal can be reused from an existing DMRS embedded in the transmitted signal, as shown in Figure 6.
- the design of the reference signal satisfies at least one of the following:
- the PA When the first reference signal is transmitted, the PA is either operating in the linear region or not operating in the saturation region;
- the first reference signal is located at the first symbol and/or the last symbol of the PUSCH;
- the first symbol after the reference signal is a repetition of the first symbol of the transmitted signal. This repetition is used by the receiver for AGC processing.
- the second reference signal is located at the symbol where the transmitted signal is located;
- the second reference signal When the second reference signal is located at the symbol of the transmitted signal to estimate the impact of the transmitted signal during communication, the second reference signal can reuse the existing DMRS design, for example, the transmission pattern of PUSCH DMRS can be reused during uplink transmission.
- the PA operates in the saturation region/saturation point/1dB compression point.
- the nonlinear distortion (mainly power amplifier related) that the transmitted signal will be affected by can be obtained by removing the channel characteristic information estimated from the first reference signal and/or some other signal distortion information, thereby performing digital post-distortion and recovering the signal.
- the gap shown in Figure 6 may exist. When it does, it could be a time-domain unit that is not transmitted, such as one symbol, or it could be a repetition of the previous or next time-domain unit. Alternatively, the gap shown in Figure 6 may not exist, meaning that the reference signal and the transmitted signal are adjacent in the time domain.
- the transmitter periodically, semi-statically, or non-periodically, or triggered by the transmitter or receiver, transmits a reference signal, enabling the receiver to estimate the nonlinear state information of the transmitter's power amplifier (PA).
- PA power amplifier
- the reference signal is transmitted independently.
- the independently transmitted reference signal can be periodically transmitted by the base station allocating periodic reference signal transmission resources to the terminal, or it can be semi-statically transmitted by the base station or the terminal, or it can be transmitted on demand by the base station or the terminal.
- on-demand triggering means triggering the transmission of the reference signal based on a triggering event.
- the terminal requests the base station to allocate transmission resources for the reference signal via SR/BSR;
- the base station indicates the transmission resources of the reference signal via PDCCH;
- the base station when scheduling uplink/downlink transmissions, the base station sends a second indication message to instruct the terminal to send a reference signal, or to indicate at which resource location the terminal should send the reference signal.
- the reference signal includes a first reference signal and a second reference signal, wherein the power of the first reference signal is lower than a first preset value, and the power of the second reference signal is higher than a second preset value.
- the first reference signal occupies K1 symbols
- the terminal sends two SRS signals, with the first SRS signal serving as the first reference signal and the second SRS signal serving as the second reference signal.
- the first reference signal and the second reference signal are adjacent in the time domain.
- a gap is provided between the first reference signal and the second reference signal for AGC adjustment at the receiving end.
- the gap can be either no transmission, a repetition of the first reference signal, or a repetition of the second reference signal.
- the transmission of the reference signal is associated with other uplink transmissions:
- the reference signal can be placed at the end of these uplink schedules and transmitted in the nonlinear region of the PA.
- the nonlinear characteristics of the PA can be estimated based on the reference signal. This does not affect other uplink transmissions and also eliminates the need for additional scheduling by the base station, saving signaling overhead.
- the reference signal occupies the last symbol of the uplink schedule.
- repetition can be performed on the reference signal for AGC.
- a repetition can be performed on the last symbol of the uplink transmission for AGC.
- nonlinear feature estimation based on the known information can be considered without the need to send an additional reference signal.
- HARQ hybrid automatic repeat request
- ACK acknowledgenowledgement
- CSI-RS Channel State Information Reference Signal
- a reference signal is received, which is used to assist the receiving end in estimating the transmission characteristic information of the received transmission signal; based on the transmission characteristic information of the transmission signal, the transmission signal is processed to compensate for the distortion of the received transmission signal, thereby effectively ensuring the consistency between the signal sent by the transmitting end and the signal received by the receiving end.
- the second information includes at least one of the following:
- the second item the pattern of the reference signal, wherein the pattern of the reference signal is related to whether the transmitted signal is in the nonlinear state.
- the pattern indicating information is control information, and the pattern of the reference signal is indicated by the control information;
- the pattern of the reference signal can be determined by whether a low-power symbol is received.
- the transmitter is transmitting in the linear region or in a nonlinear region.
- the third item uplink transmission scheduling information, which includes whether the transmission signal is sent in the nonlinear state;
- the power information of the transmitted signal includes at least one of the following:
- the receiver determines the target symbol based on whether it receives repeated transmissions of the target symbol, i.e., based on whether AGC exists.
- the target symbol can be the first or last symbol of the transmitted signal.
- the reference signal includes at least one of the following:
- the first reference signal is used to assist the receiver in estimating the channel characteristic information of the transmitted signal
- the nonlinear characteristic information is the nonlinear state of the power amplifier associated with the transmitted signal.
- the second reference signal is sent when the power amplifier is in a nonlinear state.
- the method in this application embodiment further includes:
- first indication information which is used to indicate a first difference between the transmission power of the first reference signal and the transmission power of the second reference signal, or to indicate a second difference between the energy EPR on each resource element corresponding to the first reference signal and the EPR corresponding to the second reference signal, or to indicate a third difference between the transmission bandwidth of the first reference signal and the transmission bandwidth of the second reference signal, or to indicate the absolute value of the transmission power of the first reference signal or the absolute value of the transmission power of the second reference signal, or to indicate the absolute value of the EPR corresponding to the first reference signal or the absolute value of the EPR corresponding to the second reference signal, or to indicate the absolute value of the transmission bandwidth of the first reference signal or the absolute value of the transmission bandwidth of the second reference signal.
- the first reference signal and the second reference signal are spaced apart by K time units, where K is an integer.
- the first reference signal and the second reference signal satisfy at least one of the following:
- the bandwidth of the first reference signal is less than the bandwidth of the second reference signal
- the time domain position corresponding to the first reference signal is different from the time domain position corresponding to the second reference signal;
- the sequence corresponding to the first reference signal is different from the sequence corresponding to the second reference signal.
- the first reference signal is a comb-like structure.
- the reference signal is a constant envelope signal or a non-constant envelope signal.
- the received reference signal includes:
- the reference signal is received periodically;
- the reference signal may be received non-periodically;
- the reference signal can be received using a semi-static transmission method
- the reference signal may be received based on a triggering event.
- the triggering event includes at least one of the following:
- the nonlinear characteristics of the transmitting or receiving end cause the effective timer to fail
- the time during which the transmitting end does not send a transmission signal exceeds the first threshold
- the duration of the transmission signal sent by the transmitting end is greater than the second threshold
- the change in the nonlinear state of the power amplifier PA is greater than the third threshold.
- the bit error rate, retransmission rate, or non-acknowledgment (NACK) transmission rate at the receiving end is greater than the fourth threshold; or the data transmission accuracy rate, retransmission rate, or acknowledgment transmission rate at the receiving end is less than the fifth threshold.
- NACK non-acknowledgment
- the sending end needs to send transmission signals
- the sending end receives the scheduling information for transmitting the signal
- the transmitting end experiences beam failure, beam recovery, beam switching, or power amplifier switching.
- a state switch occurs at the sending end
- a reference signal is received, which is used to assist the receiving end in estimating the transmission characteristic information of the received transmission signal; based on the transmission characteristic information of the transmission signal, the transmission signal is processed to reduce the distortion of the received transmission signal, thereby effectively ensuring the consistency between the signal sent by the transmitting end and the signal received by the receiving end.
- the signal transmission method provided in this application can be executed by a signal transmission device.
- This application uses an example of a signal transmission device executing the signal transmission method to illustrate the signal transmission device provided in this application.
- 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.
- the device 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.
- the terminal may include, but is not limited to, the type of terminal 11 listed above
- 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.
- a signal transmission or signal processing device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware.
- the processing module can be implemented by a processor.
- the processor can include general-purpose processors, special-purpose processors, etc., such as a central processing unit (CPU), microprocessor, digital signal processor (DSP), artificial intelligence (AI) processor, graphics processing unit (GPU), application-specific integrated circuit (ASIC), network processor (NP), field-programmable gate array (FPGA), 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: transceiver, pins, circuits, bus, radio frequency unit, etc.
- the signal transmission device 1000 when the signal transmission 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 transmission device 1000 includes: As shown in Figure 10, this application embodiment also provides a signal transmission device, including:
- the first transmitting module 1001 is used to transmit a reference signal, which is used to estimate the transmission characteristic information of the transmitted signal.
- the reference signal includes at least one of the following:
- the first reference signal is used to estimate the channel characteristic information of the transmitted signal
- the second reference signal is used to estimate the nonlinear characteristics of the transmitted signal.
- the nonlinear characteristic information of the transmitted signal is the nonlinear state of the power amplifier associated with the transmitted signal.
- the first reference signal is transmitted when the power amplifier at the transmitting end is in a linear state
- the second reference signal is transmitted when the power amplifier at the transmitting end is in a nonlinear state.
- the apparatus in this application embodiment further includes:
- the second transmitting module is configured to transmit first indication information, wherein the first indication information is configured to indicate a first difference between the transmission power of the first reference signal and the transmission power of the second reference signal, or to indicate a second difference between the energy EPR on each resource element corresponding to the first reference signal and the EPR corresponding to the second reference signal, or to indicate a third difference between the transmission bandwidth of the first reference signal and the transmission bandwidth of the second reference signal, or to indicate the absolute value of the transmission power of the first reference signal or the absolute value of the transmission power of the second reference signal, or to indicate the absolute value of the EPR corresponding to the first reference signal or the absolute value of the EPR corresponding to the second reference signal, or to indicate the absolute value of the transmission bandwidth of the first reference signal or the absolute value of the transmission bandwidth of the second reference signal.
- the first reference signal and the second reference signal are spaced apart by K time units, where K is an integer.
- the first reference signal and the second reference signal satisfy at least one of the following:
- the bandwidth of the first reference signal is less than the bandwidth of the second reference signal
- the time domain position corresponding to the first reference signal is different from the time domain position corresponding to the second reference signal;
- the sequence corresponding to the first reference signal is different from the sequence corresponding to the second reference signal.
- the first reference signal is a comb-like structure.
- the reference signal is a constant envelope signal or a non-constant envelope signal.
- the first sending module is used to:
- the reference signal is sent periodically
- the reference signal may be transmitted non-periodically;
- the reference signal can be transmitted using a semi-static transmission method
- the reference signal may be sent based on the triggering event.
- the triggering event includes at least one of the following:
- the nonlinear characteristics of the transmitting or receiving end cause the effective timer to fail
- the time during which the transmitting end does not send a transmission signal exceeds the first threshold
- the duration of the transmission signal sent by the transmitting end is greater than the second threshold
- the change in the nonlinear state of the power amplifier PA is greater than the third threshold.
- the bit error rate, retransmission rate, or non-acknowledgment (NACK) transmission rate at the receiving end is greater than the fourth threshold; or the data transmission accuracy rate, retransmission rate, or acknowledgment transmission rate at the receiving end is less than the fifth threshold.
- NACK non-acknowledgment
- the sending end needs to send transmission signals
- the sending end receives the scheduling information for transmitting the signal
- the transmitting end experiences beam failure, beam recovery, beam switching, or power amplifier switching.
- a state switch occurs at the sending end
- the device further includes:
- the third transmitting module is used to repeatedly transmit the reference signal
- reference signals at different resource locations correspond to different transmission parameters
- the transmission parameters include at least one of beam, transmission configuration indicator (TCI), power amplifier, and power amplifier set.
- the transmission power of different reference signals corresponding to the same transmission parameter may be different.
- the first transmitting module is configured to transmit the reference signal on a first resource, the first resource being associated with the resource transmitting the signal;
- the reference signal may be transmitted on a second resource that is not associated with the resource from which the transmission signal is transmitted.
- the frequency domain range of the reference signal is greater than the frequency domain range of the transmitted signal.
- the first sending module is used to:
- a reference signal is transmitted
- the first information includes at least one of the following:
- the second indication information is used to indicate the pattern of the reference signal
- EVM Vector amplitude error
- ACLR adjacent channel leakage ratio
- the scheduling-related information includes at least one of the following:
- Modulation coding scheme MCS
- MCS adjustment method MCS
- the scheduling information indicates the vector amplitude error EVM/adjacent channel leakage ratio ACLR.
- the reference signal includes at least one of the following:
- SRS Detection Reference Signal
- Synchronization Signal/Physical Broadcast Channel Signal Block (SSB);
- Phase tracking reference signal PTRS Phase tracking reference signal
- CSI-RS Channel State Information Reference Signal
- the information processing device 1100 when the information processing device is a terminal or a component in a terminal, or a network-side device or a component in a network-side device, the information processing device 1100 includes: a first receiving module 1101, used to receive a reference signal, the reference signal being used to assist the receiving end in estimating the transmission characteristic information of the received transmission signal;
- the processing module 1102 is used to receive and process the transmission signal according to the transmission characteristic information of the transmission signal.
- processing module is used for:
- the second information includes at least one of the following:
- the pattern of the reference signal wherein the pattern of the reference signal is related to the transmitted signal in the nonlinear state
- Uplink transmission scheduling information including whether the transmission signal is sent in the nonlinear state
- the nonlinear characteristic information is the nonlinear state of the power amplifier associated with the transmitted signal.
- the first reference signal and the second reference signal satisfy at least one of the following:
- the reference signal can be received using a semi-static transmission method
- the reference signal may be received based on a triggering event.
- the nonlinear characteristics of the transmitting or receiving end cause the effective timer to fail
- the transmitting end transmits a reference signal, which is used to estimate the transmission characteristic information of the transmitted signal, so that the receiving end can estimate the transmission characteristic information of the transmitted signal based on the reference signal.
- a reference signal which is used to estimate the transmission characteristic information of the transmitted signal
- the receiving end can estimate the transmission characteristic information of the transmitted signal based on the reference signal.
- the signal transmission device provided in this application embodiment can implement the various processes implemented in the method embodiments of Figures 3 to 8 and achieve the same technical effect. To avoid repetition, it will not be described again here.
- the signal processing apparatus provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG9 and achieve the same technical effect. To avoid repetition, it will not be described again here.
- this application embodiment also provides a communication device 1200, including a processor 1201 and a memory 1202.
- the memory 1202 stores a program or instructions that can be executed on the processor 1201.
- the communication device 1200 is a terminal or a network-side device
- the program or instructions are executed by the processor 1201, they implement the various steps of the above-described signal transmission method or signal processing method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.
- the memory 1309 can be used to store software programs or instructions, as well as various data.
- the memory 1309 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.).
- the memory 1309 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.
- 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 embodiments shown in FIG3 or FIG9.
- This network-side device embodiment corresponds to the above-described 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.
- the network-side device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145.
- the antenna 141 is connected to the radio frequency device 142.
- the radio frequency device 142 receives information through the antenna 141 and sends the received information to the baseband device 143 for processing.
- the baseband device 143 processes the information to be transmitted and sends it to the radio frequency device 142.
- the radio frequency device 142 processes the received information and transmits it through the antenna 141.
- the methods executed by the receiving end or the transmitting end in the above embodiments can be implemented in the baseband device 143, which includes a baseband processor.
- the baseband device 143 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG14.
- One of the chips is, for example, a baseband processor, which is connected to the memory 145 via a bus interface to call the program or instructions in the memory 145 to execute the network-side device operation shown in the above method embodiment.
- the network-side device may also include a network interface 146, such as a Common Public Radio Interface (CPRI).
- CPRI Common Public Radio Interface
- the network-side device 1400 of this application embodiment also includes: a program or instructions stored in a memory 145 and executable on a processor 144.
- the processor 144 calls the program or instructions in the memory 145 to execute the methods executed by the modules shown in FIG10 or FIG11 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.
- This application also provides a readable storage medium storing a program or instructions.
- the program or instructions When the program or instructions are executed by a processor, they implement the various processes of the above-described signal transmission method or signal processing method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.
- 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.
- ROM computer read-only memory
- RAM random access memory
- magnetic disk magnetic disk
- optical disk optical disk
- the readable storage medium may be a non-transient readable storage medium.
- 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.
- 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 transmission method or signal processing method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.
- This application also provides a wireless communication system, including: a transmitter and a receiver, wherein the transmitter can be used to perform the steps of the signal transmission method described above, and the receiver can be used to perform the steps of the signal processing method described above.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transmitters (AREA)
Abstract
本申请公开了一种信号传输方法、信号处理方法、装置及相关设备,属于通信技术领域,本申请实施例的信号传输方法包括:发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
Description
相关申请的交叉引用
本申请基于申请号为:202411007003.8,申请日为2024年07月25日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
本申请涉及通信技术领域,具体而言,涉及一种信号传输方法、信号处理方法、装置及相关设备。
相关技术中,信号在由发送端传输至接收端的过程中,由于各种因素(功率放大器的非线性失真因素),会使得传输的信号产生额外的成分,如谐波分量、互调分量等,甚至各分量之间也能产生互调的产物,从而引发信号失真,导致最后接收端难以准确地对信号进行恢复。因此,现有信号传输方案中难以保证接收端接收到的信号与发送端发送的信号的一致性。
本申请实施例提供一种信号传输方法、信号处理方法、装置及相关设备,能够解决现有信号传输方案中难以保证接收端接收到的信号与发送端发送的信号的一致性的问题。
第一方面,提供了一种信号传输方法,由发送端执行,所述方法包括:
发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
第二方面,提供了一种信号处理方法,由接收端执行,所述方法包括:
接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;
根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
第三方面,提供了一种信号传输装置,包括:
第一发送模块,用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
第四方面,提供了一种信号处理装置,包括:
第一接收模块,用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;
处理模块,用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
第五方面,提供了一种信号传输装置,所述装置被配置为执行如第一方面所述的方法的步骤,或者提供了一种信号处理装置,所述装置被配置为执行如第二方面所述的方法的步骤。
第六方面,提供了一种终端,该终端包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面或第二方面所述的方法的步骤。
第七方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息;或者,所述通信接口用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;所述处理器用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
第八方面,提供了一种网络侧设备,该网络侧设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面或第二方面所述的方法的步骤。
第九方面,提供了一种网络侧设备,包括处理器及通信接口,其中,所述通信接口用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息;或者,所述通信接口用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;所述处理器用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
第十方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第二方面所述的方法的步骤。
第十一方面,提供了一种无线通信系统,包括:终端及网络侧设备,所述终端可用于执行如第一方面所述的方法的步骤,所述网络侧设备可用于执行如第二方面所述的方法的步骤。
第十二方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法的步骤,或实现如第二方面所述的方法的步骤。
第十三方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面或第二方面所述的方法的步骤。
在本申请实施例中,发送参考信号,所述参考信号用于估计传输信号的传输特征信息,使得接收端能够根据该参考信号估计传输信号的传输特征信息,便于接收端后续基于该传输特征信息对传输信号进行相应的接收处理,以补偿所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
图1表示本申请实施例可应用的一种通信系统的结构图;
图2表示功率放大器的非线性特征示意图;
图3表示本申请实施例的信号传输方法的流程示意图之一;
图4表示本申请实施例的信号传输方法的交互示意图之一;
图5表示本申请实施例的信号传输方法的交互示意图之二;
图6表示本申请实施例的参考信号的传输示意图之一;
图7表示本申请实施例的参考信号的传输示意图之二;
图8表示本申请实施例的信号传输方法的流程示意图之二;
图9表示本申请实施例的信号处理方法的流程示意图;
图10表示本申请实施例的信号传输装置的模块示意图;
图11表示本申请实施例的信号传输装置的模块示意图;
图12表示本申请实施例的通信设备的结构框图;
图13表示本申请实施例的终端的结构框图;
图14表示本申请实施例的网络侧设备的结构框图。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,本申请中的“或”表示所连接对象的至少其中之一。例如“A或B”的保护范围至少涵盖三种方案,即,方案一:包括A且不包括B;方案二:包括B且不包括A;方案三:既包括A又包括B。此外,术语“A和/或B”、“A和B中的至少一项”、“A或B中的至少一项”也分别至少涵盖上述三种方案。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请的术语“指示”既可以是一个直接的指示(或者说显式的指示),也可以是一个间接的指示(或者说隐含的指示)。其中,直接的指示可以理解为,发送方在发送的指示中将具体的信息、需要执行的操作或请求的结果等内容明确告知接收方;间接的指示可以理解为,接收方根据发送方发送的指示确定对应的信息,或者进行判断并根据判断结果确定需要执行的操作或请求结果等。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)或其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR系统以外的系统,如第6代(6th Generation,6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中,终端11还可以称为用户设备(User Equipment,UE),终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(Ultra-mobile Personal Computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(Augmented Reality,AR)、虚拟现实(Virtual Reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、飞行器(flight vehicle)、车载用户设备(Vehicle User Equipment,VUE)、船载设备、行人用户设备(Pedestrian User Equipment,PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(Personal Computer,PC)、柜员机或者自助机等终端侧设备。可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。其中,车载设备也可以称为车载终端、车载控制器、车载模块、车载部件、车载芯片或车载单元等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备也可以称为无线接入网(Radio Access Network,RAN)设备、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network,WLAN)接入点(Access Point,AP)或无线保真(Wireless Fidelity,WiFi)节点等。其中,基站可被称为节点B(Node B,NB)、演进节点B(Evolved Node B,eNB)、下一代节点B(the next generation Node B,gNB)、新空口节点B(New Radio Node B,NR Node B)、接入点、中继基站(Relay Base Station,RBS)、服务基站(Serving Base Station,SBS)、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用节点B(home Node B,HNB)、家用演进型节点B(home evolved Node B)、发送接收点(Transmit/Receive Point,TRP)、非地面网络(Non-Terrestrial Network,NTN)设备(例如卫星(satellite)或高空平台站(high altitude platform station)等)或所属领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例进行介绍,并不限定基站的具体类型。
核心网设备也可以称为核心网节点、核心网功能或核心网网元等,其包含但不限于如下至少一项:移动管理实体(Mobility Management Entity,MME)、接入移动管理功能(Access and Mobility Management Function,AMF)、会话管理功能(Session Management Function,SMF)、用户平面功能(User Plane Function,UPF)、策略控制功能(Policy Control Function,PCF)、策略与计费规则功能单元(Policy and Charging Rules Function,PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function,EASDF)、统一数据管理(Unified Data Management,UDM)、统一数据仓储(Unified Data Repository,UDR)、归属用户服务器(Home Subscriber Server,HSS)、集中式网络配置(Centralized network configuration,CNC)、网络存储功能(Network Repository Function,NRF)、网络开放功能(Network Exposure Function,NEF)、本地NEF(Local NEF,L-NEF)、绑定支持功能(Binding Support Function,BSF)、应用功能(Application Function,AF)、位置管理功能(Location Management Function,LMF)、网关的移动位置中心(Gateway Mobile Location Centre,GMLC)、网络数据分析功能(Network Data Analytics Function,NWDAF)、非地面网络(Non-Terrestrial Network,NTN)设备(例如卫星(satellite)或高空平台站(high altitude platform station)等)等。需要说明的是,在本申请实施例中仅以NR系统中的核心网设备为例进行介绍,并不限定核心网设备的具体类型,如果在后续协议版本(例如6G)中本申请实施例提到的核心网设备的名称发生变化,也在本申请的保护范围内。
可选的,核心网设备可以由一个设备中的一个或多个功能模块实现,也可以由多个设备共同实现,本申请实施例对此不作具体限定。可以理解的是,上述功能模块既可以是硬件设备中的网络元件,或者是在专用硬件上运行的软件功能模块,或者是平台(例如,云平台)上实例化的虚拟化功能模块等。
为使本领域技术人员能够更好地理解本申请实施例,首先进行如下说明。
一、功率放大器(Power Amplifier,PA);
相关技术中,为了传送远距离的电信号和保证信号质量,需要对信号进行放大处理。而功率放大器(简称功放)正是一种重要的工具,通过增加信号的功率,有效地将微弱的信号转化为强大的输出信号。
1、PA的非线性:
如图2所示,功放非线性是指当功放的输入信号为小电流信号时,输出功率随着输入功率线性增加,输出信号功率与输入信号功率比值不变,即增益为一固定值,称这一状态为线性状态。当功放输入大电流信号时,输出信号与输入信号的功率比发生变化,且功率比逐渐减小,即增益出现压缩现象。最终结果为输入信号功率增加,而输出功率不变,称这一状态为饱和状态。为了提高功放效率,使得信号发射距离更远,需要将功放长期工作在饱和区,或者描述为非线性区。但是功放在未达到饱和状态之前,增益已经出现压缩,也就是所谓的功放非线性失真。
功放的非线性失真引发传输信号产生额外的频率成分,如谐波分量、互调分量等,甚至各分量之间也能产生互调的产物。这些失真带来的分量都与需要传输的信号不相符,给传输过程带来困扰,导致最后接收到的信号出现话音畸变,断断续续等不完整现象。因此需要对功放的非线性失真做线性化处理使得经过功放放大后的信号能够保持完整无损。
2、PA的效率和功耗:
功率放大器的效率一般较低,通信系统中常用的功率放大器理论上可以达到50%甚至更高,但是在实际工作中,一般的效率只有10%~30%。
一般来说,功率放大器的效率会随着输出功率的增大而增大,工作在饱和区的时候功率放大器的效率是最高的。
同时,虽然功率放大器的增益和效率都会随着输出功率的增大而增大,但是由于输出功率增大,功率放大器的功耗一般也会相应的提高,只是提高的幅度没有输出功率增大的多。
二、非线性失真处理技术:
对功放的非线性失真有着多种处理方式,常见的主要是功率回退和数字预失真(Digital Pre-Distortion,DPD)技术。
其中,功率回退即功率回退法就是把功率放大器的输入功率从1dB压缩点(相当于放大器线性区和非线性区的临界点)向后回退6-10个分贝,工作在远小于1dB压缩点的电平上,使功率放大器远离饱和区,进入线性工作区,从而改善功率放大器的三阶交调系数。一般情况,当基波功率降低1dB时,三阶交调失真改善2dB。但是,由于功率回退,PA的工作点远离饱和点,此时PA的效率较低。同时,当输出功率回退到一定程度时,比如当三阶交调值小于-45dBc以下时,继续回退很难进一步提高PA的线性度。而且,对宽带信号,由于记忆效应,功率回退的效果也有限。
数字预失真技术,通过一个预失真元件(Predistorter)和功放元件(PA)级联,非线性失真功能内置于数字、数码基带信号处理域中,其与放大器展示的失真数量相当(相等),但功能却相反。将这两个非线性失真功能相结合,便能够实现高度线性、无失真的系统。数字预失真技术的挑战在于PA的失真(即非线性)特性会随时间、温度以及偏压(biasing)的变化而变化,因器件的不同而不同。
三、数字后失真技术:
不同于DPD技术在PA所在的发射端提前处理非线性失真,数字后失真技术是在接收端对信号进行后处理,即去除接收信号中的非线性失真项。数字后失真技术的好处在于PA可以工作在饱和点,以提高功放的效率。
假设用常用的MP模型来建立PA的数学模型,具体如下:
其中,n代表时域的第n个采样点,d代表PA的记忆深度,p代表阶数,c代表级数的核函数,即可以简单的认为信号中的非线性特征由记忆深度,阶数,核函数组成。
当接收端了解了PA的非线性特征后,便可建立PA的数学模型,进而去除掉信号中的非线性失真项。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的信号传输方法进行详细地说明。
如图3所示,本申请实施例提供了一种信号传输方法,由发送端执行,该方法包括:
步骤301:发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
本申请实施例中,发送端为终端或网络侧设备,该网络侧设备可以是基站。
本步骤中,发送端向接收端发送参考信号,以便于接收端基于该参考信号估计发送端发送的传输信号的传输特征信息。
该接收端可以是终端或网络侧设备。示例性的,上述发送端为终端,接收端为终端;或者,发送端为终端,接收端为基站;或者,发送端为基站,接收端为终端。
可选地,所述传输信号包括参考信号、数据信号和控制信号中的至少一项。
可选地,所述参考信号包括以下至少一项:
解调参考信号(Demodulation Reference Signal,DMRS);
探测参考信号(Sounding Reference Signal,SRS);
同步信号/物理广播信道信号块(Synchronization Signal and PBCH block,SSB);
主同步信号(Primary Synchronisation Signal,PSS);
辅同步信号(Secondary Synchronisation Signal,SSS);
跟踪参考信号(Tracking Reference Signal,TRS);
相位跟踪参考信号(Phase Tracking Reference Signal,PTRS);
信道状态信息参考信号(CSI Reference Signal,CSI-RS)。
本申请实施例中,发送端发送参考信号,所述参考信号用于估计传输信号的传输特征信息,使得接收端能够根据该参考信号估计传输信号的传输特征信息,便于接收端后续基于该传输特征信息对传输信号进行相应的接收处理,以补偿所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
可选地,所述参考信号包括以下至少一项:
第一参考信号;
第二参考信号;
其中,所述第一参考信号用于估计传输信号的信道特征信息;
所述第二参考信号用于估计传输信号的非线性特征信息。
本申请实施例中,所述第一参考信号的发送功率与所述第二参考信号的发送功率不同。
可选地,所述第一参考信号还用于估计以下至少一项信息:邻道干扰信息,接收机的非线性失真信息、发射机中除功率放大器之外的器件产生的非线性失真信息。
在一些实施例中,发送端的非线性特征信息变化较慢,因此接收端不需要实时获取非线性特征信息以用于数据解调,而是可以根据之前测量的非线性特征信息执行数据解调,因此,发送端可以在发送传输信号时只发送第一参考信号。或者,在一些实施例中,在传输信号在线性区传输的情况下,也可以只发送第一参考信号。
在一些实施例中,发送端的非线性特征信息变化较快时,发送端可以在发送传输信号的同时发送第一参考信号和第二参考信号。在一些实施例中,在基于传输信号能够得到信道特征信息的情况下,发送端也可以仅发送第二参考信号。
本申请实施例中,接收端基于上述第一参数信号和第二参考信号中的至少一项,可以确定传输信号的信道特征信息和/或非线性特征信息,进而能够基于该信道特征信息和/或非线性特征信息对传输信号进行数字后失真处理,除掉所接收的传输信号中的非线性失真项,补偿所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。且本申请的方案使得数字后失真技术可以应用在接收端,使得发送端的功率放大器可以工作在饱和点,取得最大的功率放大器效率,从而实现发送端的节能目的。
可选地,所述传输信号的非线性特征信息是与传输信号关联的功率放大器的非线性状态。
本申请实施例中,所述传输信号的非线性特征信息还包括以下至少一项:传输信号所关联功率放大器的模型,传输信号所关联功率放大器的核函数(级数核),传输信号所关联功率放大器的记忆深度,传输信号所关联功率放大器发送传输信号的工作点,传输信号所关联功率放大器发送传输信号的平均功率中的至少一项。
上述功率放大器的非线性状态是指功率放大器工作在非线性区,该非线性区也可描述为饱和区。
需要说明的是,所述关联的功率放大器可能是一个等效功率放大器,等效功率放大器的含义是指对接收端来说,接收到的传输信号关联的非线性特征不一定是某一个具体的功率放大器的非线性状态,而可能是多个功率放大器的非线性状态的共同作用,或可能是经过一些信号处理,例如数字预失真后的非线性特征,而不完全是功率放大器的真正的非线性状态。
本申请实施例中,接收端基于第二参考信号,能够获知发送端的功率放大器是否工作在非线性状态,从而能够确定所接收信号中是否包含非线性失真项,进而能够选择合适的信号解调方法解调数据。
可选地,所述第一参考信号是在所述发送端的功率放大器处于线性状态的情况下发送的;
所述第二参考信号是在所述发送端的功率放大器处于非线性状态的情况下发送的。
由于在线性区发送的信号主要受到信道的影响,因此,可以先通过上述第一参考信号将信道特征信息估计出来,而上述传输信号是在非线性区发送的,传输信号会同时受到信道和非线性特征的影响,而第二参考信号也会同时受到信道和非线性特征的影响,所以此时在基于第一参考信号估计出来的信道特征信息的基础上,可以再基于上述第二参考信号估计出非线性特征信息。
例如,假设在非线性区发送的信号记为x,信道特征信息记为H,非线性特征信息记为G,其他小区或各种因素导致的干扰项记为R时,接收端接收到的信号y可以表达为y=R*H*G*x。
当参考信号x1位于线性区发送时,此时接收端接收到的参考信号y1可以表达为y1=R*H*x1。此时由于x1和y1都已知,可以得到R*H。
此时再基于非线性区发送的参考信号,由于x和y已知,就可以得到非线性特征信息G,从而实现数字后失真处理。
可选地,本申请实施例的方法,还包括:
发送第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量(Energy Per Resource Element,EPRE)与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
本申请实施例中,所述第一指示信息指示的内容还可以由协议预定义或者由网络侧设备配置。
上述第一指示信息可以通过RRC、MAC CE或PDCCH或PUCCH等信道承载。
这里,通过发送该第一指示信息,使得接收端能够获知第一参考信号和第二参考信号的功率相关信息,进而基于该功率相关信息能够辅助接收端确定第一参考信号对应的线性特征信息和/或第二参考信号对应的非线性特征信息。
可选地,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
本申请实施例中,第一参考信号和第二参考信号之间设置K个时间单位,即两个参考信号之间有间隔符号,以便于接收端进行自动增益控制(Automatic Gain Control,AGC)。间隔符号上可以发送后一个发送参考信号或前一个发送参考信号的部分重复或全部重复,或者不进行发送。
上述时间单元可以包括一个或多个符号,时隙,无线子帧,无线帧,毫秒,秒。
可选地,所述第一参考信号和所述第二参考信号满足以下至少一项:
第一项:所述第一参考信号的带宽小于所述第二参考信号的带宽。
这里,第一参考信号的带宽小于第二参考信号的带宽,在EPRE相同的情况下可以使得第一参考信号的发送功率更小,更容易实现在PA的线性区内发送。
上述第一参考信号的带宽与第二参考信号的带宽的差值可以由发送端指示,或由协议预定义或者由网络侧预配置。可选地,带宽的差值可以是与单边带宽的差值。可选地,所述第一参考信号的中心频率与所述第二参考信号的中心频率相同。
第二项:所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同。
例如,第一参考信号对应的符号和第二参考信号对应的符号不同。
第三项:所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
具体的,第一参考信号与第二参考信号可以对应不同的参考信号类型。
这里,第一参考信号和第二参考信号对应不同的序列,可以具有不同的估计性能,使得第一参考信号和第二参考信号的设置更加灵活。
可选地,所述第一参考信号为梳状结构。
这里,通过设置第一参考信号为梳状结构,能够使得第一参考信号的发送功率更小,更容易实现在PA的线性区内发送。例如,第一参考信号每隔N个频域单位占用L个频域单位。
可选地,所述参考信号为恒包络信号或为非恒包络信号。
本申请实施例中,在参考信号为恒包络信号时,可以估计某个发送功率点的非线性特征信息。在参考信号为非恒包络信号时,可以估计一定范围内发送功率的非线性特征信息。
可选地,所述发送参考信号,包括:
周期性地发送所述参考信号;
或者,非周期性地发送所述参考信号;
或者,基于半静态的发送方式,发送所述参考信号;
或者,根据触发事件,发送所述参考信号。
本申请实施例中,参考信号的发送周期由发送端确定或由接收端确定。所述参考信号可有发送端触发发送,或者由接收端触发发送。
示例性的,发送端根据非线性特征的变化特点,业务类型等确定发送周期。接收端根据移动性,波束变化,解码成功率等确定发送周期。
可选地,所述触发事件包括以下至少一项:
A1:发送端或接收端的非线性特性有效定时器失效。
该非线性特征有效定时器用来判断得到的非线性特征是否有效,可以理解为非线性信息的有效时间。有效时间结束后基于新的参考信号估计最新的非线性特征信息。
A2:发送端没有发送传输信号的时间大于第一阈值。
这里,在发送端没有发送传输信号的时间大于第一阈值的情况下,触发发送端发送参考信号,以便于接收端估计非线性特征信息,以避免在非线性特征信息变化较大后接收端使用误差较大的非线性特征信息。
A3:发送端发送传输信号的持续时间大于第二阈值。
这里,发送端发送传输信号的持续时间大于第二阈值的情况下,触发发送端发送参考信号,以便于接收端重新估计非线性特征信息,减少记忆效应对非线性特征信息带来的影响。
A4:功率放大器PA的非线性状态的变化值大于第三阈值。
该非线性状态可以是温度,记忆效应等。温度变化较大时会影响PA的非线性状态。记忆深度改变时会影响PA的非线性状态。
A5:接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值。
可选地,本申请实施例中,上述A5对应的触发事件还可以是接收端的误码率、重传率或非确认消息NACK的传输率与预设数值的偏移值大于预设阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率与预设数值的偏移值大于预设阈值。
A6:发送端需要发送传输信号。
发送传输信号前先发送参考信号,便于接收端估计非线性特征信息,以接收传输信号。
A7:发送端接收到发送传输信号的调度信息。
A8:发送端发生波束失败或波束恢复或波束切换或PA切换。
由于不同的波束对应不同的功率放大器,或者,对应不同的放大器数量,因此,在发送端发生波束失败或波束恢复或波束切换的情况下触发发送参考信号,以便于接收端重新估计非线性特征信息。
而如果功率放大器发生了切换,不同的功率放大器对应的非线性状态可能不同,因此,需要告知接收端新的非线性特征信息,或者重新发送参考信号。
A9:发送端发生状态切换。
例如,从空闲态切换至连接态,或者从非激活态切换至连接态,或者从连接态切换至空闲态或非激活态。
A10:发送端发生小区切换。
在发送端发生小区切换的情况下,功率放大器的特性会发生变化,因此,需要重新发送参考信号。
可选地,所述方法还包括:
重复发送所述参考信号;
其中,重复发送的所述参考信号中,不同资源位置的参考信号对应不同的发送参数,所述发送参数包括波束、传输配置指示(Transmission Configuration Indicator,TCI)、功率放大器和功率放大器集合(PA set)中的至少一项;
或者,重复发送的所述参考信号中,对应同一个所述发送参数的不同参考信号的发送功率不同。
上述资源位置包括时域资源位置和频域资源位置中的至少一项。
可选地,对应于不同波束、TCI、功率放大器或功率放大器集合的参考信号可以在相同的时域上发送。
可选地,对应同一发送参数的不同参考信号的发送功率的差值可以由发送端根据功率放大器的特征确定。
可选地,所述重复发送所述参考信号包括:在所述参考信号被触发后,重复发送K次,K为正整数,K由协议预定义,或由网络侧预配置或由网络侧配置。
可选地,所述重复发送所述参考信号包括:在一个发送周期内,重复发送K次。
可选地,重复发送的所述参考信号的时域间隔为J个时域单位。
本申请实施例中,通过重复发送参考信号,可以辅助接收端估计功率放大器在非线性区的不同工作点的非线性特征信息,还可以辅助接收端估计发送端不同功率放大器的非线性特征信息。
可选地,所述发送参考信号,包括:
在第一资源上发送所述参考信号,所述第一资源关联传输信号的资源;
或者,在第二资源上发送所述参考信号,所述第二资源不关联所述传输信号的资源。
本申请实施例中,参考信号与传输信号可以有关联关系,例如参考信号与传输信号时域相连,或者时域间隔固定,或者时域间隔显示/隐式指示,又或者可以在同一个资源上发送,示例性的,对于非线性特征变换较快的场景,可以将参考信号与传输信号在同一块资源上发送,以便于接收端基于该参考信号获取与该传输信号对应的非线性特征信息。本申请实施例中,参考信号与传输信号也可以在不相关的资源上发送,即参考信号与传输信号的发送互相独立。示例性的,对于非线性特征变换较慢的场景,可以将参考信号周期性的发送,不考虑传输信号如何发送,以便于接收端定期地基于该参考信号获取发发送端对应的非线性特征信息。
本申请实施例中,在参考信号周期性的发送的情况下,下行的参考信号可以重用PSS,上行的参考信号可以重用SRS。
在参考信号与传输信号在同一块资源上传输的情况下,参考信号可以重用DMRS。
可选地,本申请实施例中,参考信号的序列与终端的ID有关。
可选地,所述参考信号的频域范围大于所述传输信号的频域范围。
本申请实施例中参考信号的频域范围的指示方式包括以下至少一项:
B1:由发送端指示;
例如,基站通过控制信息告知终端参考信号的频域范围。
B2:由接收端指示;
例如,基站通过调度信息告知终端参考信号应该在什么范围内发送。
B3:通过位图(bitmap)直接指示参考信号的频域范围。
例如,bitmap指示在哪些物理资源块(Physical Resource Block,PRB)上发送参考信号。
B4:通过偏移值间接指示参考信号的频域范围。
该偏移值用于指示参考信号的频域范围与信号频域范围的偏移值,例如,用于指示参考信号的频域范围相对于信号频域范围的频域最高点、频域中心点或频域最低点的偏移值。该偏移值的单位为一个或多个子载波,PRB,预编码资源块组(Precoding Resource block Group,PRG),资源块组(Resource block group,RBG),资源块集合(Resource block set,RB set),子带。
由于参考信号的频域范围大于传输信号的频域范围,因此,可以辅助接收端估计由非线性特征导致频谱扩展带来的干扰。
可选地,所述发送参考信号,包括:
根据第一信息,确定参考信号的图样;
根据所述参考信号的图样,发送参考信号。
本申请实施例中,所述参考信号的图样可以是是否发送参考信号,还可以是以什么图样发送参考信号。例如,参考信号的发送类型,或时频域位置。
本申请实施例中,可以根据参考信号的图样,确定周期性发送参考信号还是非周期性发送参考信号,或者是参考信号与传输信号是否在同一块资源上传输。
其中,所述第一信息包括以下至少一项:
C1:发送端的功率放大器的非线性状态的变化。
具体的,根据发送端的功率放大器的非线性状态的变化快慢或幅度,确定参考信号的图样。例如,发送端的功率放大器的非线性状态的变化较快时,可以将参考信号与传输信号在同一块资源上传输或者说在一次发送中传输,该传输方式也可描述为随路传输。
C2:调度相关信息;
可选地,所述调度相关信息包括以下至少一项:
第一项:调度传输的时域位置。
例如,当发生了非线性特征的变化,此时调度传输前一段时间内没有用于估计非线性特征的参考信号发送,则发送随路的参考信号。
第二项:上行功率控制信息。
例如,基站指示的上行功率落在线性区,则不发送参考信号,如果落在非线性区,则发送参考信号。
第三项:业务类型;
例如,针对特定业务类型,才发送参考信号。
第四项:符号的数量;
例如,当符号数大于一定阈值时,才可以发送随路的参考信号。
第五项:带宽;
例如,当带宽大于一定阈值时,才发送参考信号或随路的参考信号。
第六项:调制编码方案(Modulation and coding scheme,MCS)或MCS的调整方式;
第七项:调度信息指示的矢量幅度误差(Error Vector Magnitude,EVM)或相邻频道泄漏比(Adjacent Channel Leakage Ratio,ACLR)。
例如,当EVM要求小于一定阈值时,才发送参考信号或随路的参考信号。当ACLR要求小于一定阈值时,不发送参考信号或随路的参考信号。
C3:指示信息,所述指示信息用于指示所述参考信号的图样。
C4:传输信号的类型。
可选地,当传输信号为以下目标信号时不发送参考信号。该目标信号包括以下至少一项:
SRS,PUCCH format0,PUCCH format2,SSB,TRS。
可以理解,当传输信号符号数较少时,不太适合额外同时发送参考信号,因为这样会降低传输效率。因此,发送端在发送目标信号时,可以考虑在线性区发送,或者发送独立的参考信号。
C5:矢量幅度误差EVM/相邻频道泄漏比ACLR要求。
例如,当EVM要求小于一定阈值时,才发送参考信号或随路的参考信号。此时需要非线性特征信息补偿传输信号的非线性失真,从而降低EVM。或当ACLR要求小于一定阈值时,不发送参考信号或随路的参考信号。当ACLR要求较高时,不太适用于发送端在非线性区执行传输,因此也不需要发送参考信号估计非线性特征信息。
下面结合实施例对本申请的信号处理方法进行说明。
实施例一:
在一些实施例中,发送端的非线性特征信息变化较慢,因此接收端不需要实时获取非线性特征信息以用于数据解调,而是可以根据之前测量的非线性特征信息执行数据解调,如图4所示,本申请实施例的流程包括:
步骤1:发送端发送参考信号。
发送端可周期性的发送参考信号,或采用半静态的方式发送参考信号,或非周期性的发送参考信号。
步骤2:接收端基于发送端发送的参考信号估计发送端的非线性特征信息。
步骤3:接收端基于估计得到的非线性特征信息调整用于数据解调的PA模型等相关接收参数。
步骤4:发送端发送传输信号。
步骤5:接收端判断该传输信号是否在非线性区传输,如果是在非线性区传输,则基于调整后的接收参数解调接收到的信号。
需要注意的是,以上流程的步骤可以任意调换或取消。例如,接收端在确定传输位于非线性区时才调整自己的接收参数,又例如,接收端不需要确定传输是否位于非线性区,或者是在接收到参考信号后,就认为接下来的一段时间内接收到的数据传输都是位于非线性区的。
在另外一些实施例中,发送端的非线性参数变化较快,或是发送端没有发送与数据独立的参考信号,则为了让接收端可以去除传输信号的非线性特征,发送端将参考信号同数据信号一同发送,如图5所示,流程包括:
步骤1:发送端同时发送参考信号和传输信号;
步骤2:接收端判断参考信号和传输信号是否在非线性区传输;
步骤3:参考信号和传输信号是否在非线性区传输的情况下,基于参考信号估计得到非线性特征信息,进而调整用于数据解调的PA模型等相关接收参数;
步骤4:接收端基于非线性特征信息或者调整后的接收参数解调数据;
需要说明的是,以上流程的步骤可能任意调换或取消。
实施例二:
在一些实施例中,发送端发送传输信号时,与传输信息一起发送参考信号,从而解决了数据解调需要信道估计和非线性特性估计的问题,使得发送端的功率放大器效率取得了增益。
一种可能的实现方式是:
发送端在发送传输时,同时发送的参考信号包括第一参考信号和第二参考信号。第一参考信号用于接收端估计信道特征信息,第二参考信号用于接收端估计功率放大器的非线性特性信息,或者认为参考信号只包含第一参考信号,第二参考信号可以重用现有的DMRS嵌在传输信号中,如6图所示。参考信号的设计满足以下至少一项:
(1)第一参考信号在发送时PA工作在线性区,或者不工作在饱和区;
(2)第一参考信号位于PUSCH的第一个符号和/或最后一个符号;
(3)参考信号之后的第一个符号为传输信号所在的第一个符号的重复(repetition),该重复的符号用于接收端进行AGC处理。
(4)参考信号所在的符号没有数据映射;
(5)第二参考信号位于传输信号所在的符号;
将第二参考信号位于传输信号所在的符号来估计传输信号在通信过程中受到的影响时,第二参考信号可以重用已有的DMRS设计,例如,在上行传输时重用PUSCH DMRS的发送图样(pattern);
(6)发送端在发送第二参考信号时PA工作在饱和区/饱和点/1dB压缩点。
当第二参考信号在传输过程中受到与传输信号相同的影响时,由于第二参考信号的发送信息已知,便可以通过去除第一参考信号估计出的信道特征信息和/或一些其他的信号失真信息,得到传输信号会受到的(主要是功率放大器相关的)非线性失真影响,从而执行数字后失真,恢复信号。
需要说明的是,图6中所示的间隔(gap)可能存在,当存在的时候可能为一些不发送的时域单位,例如1个符号,也可能为前一个时域单位或后一个时域单位的repetition。图6中所示的gap也可能是不存在的,即参考信号与传输信号时域相邻。
实施例三:
在一些实施例中,发送端周期性的,或半静态的,或非周期性的,或由发送端或接收端触发,发送参考信号,使得接收端可以估计发送端的PA的非线性状态信息,从而解决了数据解调需要信道估计和非线性特性估计的问题,使得发送端的功率放大器效率取得了增益。
一种可能的实现方式是:参考信号独立发送。具体的,如图7所示,独立发送的参考信号可以是由基站给终端分配周期性的参考信号传输资源进而进行周期性的传输,或者由基站或终端触发半静态的参考信号的传输,或是基站或终端按需触发参考信号的传输。这里的按需触发即基于触发事件触发参考信号的传输。
可选的,终端通过SR/BSR请求基站分配参考信号的传输资源;
可选的,基站通过PDCCH指示参考信号的传输资源;
可选的,基站在调度上行/下行传输时,发送第二指示信息,指示终端发送参考信号,或指示终端在哪个资源位置发送参考信号。
可选的,参考信号包括第一参考信号和第二参考信号,第一参考信号的功率低于第一预设值,第二参考信号的功率高于第二预设值。
可选的,第一参考信号占据K1个符号,第二参考信号占据K2个符号,例如K1=K2=1。例如,终端发送两个SRS信号,第一个SRS信号作为第一参考信号,第二个SRS信号作为第二参考信号。
可选的,第一参考信号与第二参考信号时域相邻。
可选地,第一参考信号与第二参考信号中间有gap,用于接收端进行AGC调整。Gap可以是不进行发送,或者是第一参考信号的repetition,或者是第二参考信号的repetition。
另一种可能的实现方式是:参考信号的传输与其他上行传输关联:
当某些上行传输是位于PA的线性区发送时,可以将参考信号置于这些上行调度的末端进行传输,在PA的非线性区进行发送,借助这些上行传输发送一定会做的信道估计,可以基于参考信号将PA的非线性特性估计出来,既不影响其他上行传输,还可以不用基站进行额外调度,节省信令开销。
可选的,参考信号占据上行调度的最后1个符号。
可选的,对参考信号做repetition,用于AGC。
可选的,对上行传输的最后一个符号做repetition,用于AGC。
可选的,基站在调度上行传输时,发送第二指示信息,指示终端同时发送参考信号,或指示终端在哪个时域位置(符号)发送参考信号,或指示终端在上行传输的偏移(offset)时频域位置发送参考信号。
可选的,终端在进行上行传输时,发送第二指示信息,指示终端同时发送了参考信号,或指示终端在哪个时域位置(符号)发送了参考信号。
实施例四:
在一些实施例中,当发送端进行repetition传输时,或者混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)-确认(ACK)重传,或者独立发送参考信号等接收端已知信息的传输时,可以考虑基于已知信息进行非线性特征估计,而不需要额外发送参考信号。
在一些实施例中,在进行接收端已知信息的传输时,可以考虑不发送与传输信号时域复用的第二参考信号,只发送用于信道估计的第一参考信号。
在一些实施例中,如果信道条件变化较慢,可以考虑不发送单独的用于信道估计的第一参考信号,而是让接收端利用之前已获得的信道估计特性。
在一些实施例中,周期性发送的参考信号,例如SSB,只在某些预定义或预配置的周期位置额外发送参考信号。例如,额外发送参考信号的SSB位置是为了给第一次检测SSB的UE使用,后续由于SSB的PSS和SSS序列已知,终端可以通过已知的序列获得信道特征信息和/或非线性特征。在一些实施例中,PSS或SSS在线性区发送,PBCH在非线性区发送。
在一些实施例中,发送端的信号记忆特征不显著,接收端可以利用参考信号将信号特征和非线性特征同时估计出来,然后利用接收端算法将数据恢复。此时,需要发送端提前告知接收端,或者接收端通过参考信号的pattern进行判断。
在一些子实施例中,发送端提前告知接收端参考信号pattern,或指示发送参考信号的哪一部分或是否发送相关参考信号。
实施例五:
PA是否位于线性区发送决定了发送的信号是否有非线性失真,而信号是否有失真也影响着接收端的数据解调。这也就意味着如果接收端想要正确解调数据,需要知道信号是否有失真,也相当于需要知道PA是位于线性区执行的传输还是位于非线性区执行的传输。如图8所示。因此,接收端在解码数据前需要先判断所接收信号是否具有非线性特征,即接收的信号是否是由发送端在PA的非线性区发送的。
一种可能的实现方式是:发送端提前指示接收端是否在非线性区进行发送;
发送端(例如基站)在发送控制信息(例如PDCCH)时,可以指示数据信道是否位于非线性区发送,或者通过指示关联的参考信号pattern隐式指示数据信道是否位于非线性区发送。
所述关联的参考信号pattern可以是数据信道发送时携带的参考信号pattern,例如是否有两种功率不同的参考信号,参考信号的位置。
所述关联的参考信号pattern还可以是控制信息是否指示数据发送之前发送端额外发送了参考信号。
显然,接收端可以提前确定发送端是否在非线性区进行发送,从而选择合适的信号解调方法解调数据。
另一种可能的实现方式是:接收端调度发送端是否在非线性区进行发送;
由于终端的上行传输是由基站调度的,因此基站可以直接指示终端在非线性区还是线性区执行传输。
此时,有两种可能:
在一些实施例中,基站了解终端的PA特性,例如线性区与非线性区的功率分界点,则此时可以通过上行功率控制,将终端的上行发送功率控制在线性区或者非线性区内。
在一些实施例中,基站不了解终端的PA特性,则只指示终端在非线性区还是线性区执行传输,或是否允许终端在非线性区传输。
另一种可能的实现方式是:接收端检测发送端是否在非线性区进行发送;
接收端可以通过检测确定发送端是否在非线性区进行发送。一种可能的方法是接收端检测到某些或某个符号上的功率低于其他符号,则认为发送端在非线性区发送。因为此时传输携带了功率较低的参考信号,单独对信道进行估计,以进行正确的数据解调。
本申请实施例的方案,接收端可以通过参考信号获得发送端PA的工作状态以及对应的非线性特征,从而可以去除接收信号的非线性干扰,实现正确解码。此方案使得数字后失真技术可以应用在接收端,从而实现发送端的节能目的。
如图9所示,本申请实施例还提供了一种信号处理方法,由接收端执行,该方法包括:
步骤901:接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息。
本申请实施例中,发送端为终端或网络侧设备,该网络侧设备可以是基站。
本步骤中,发送端向接收端发送参考信号,以便于接收端基于该参考信号估计发送端发送的传输信号的传输特征信息。
该接收端可以是终端或网络侧设备。示例性的,上述发送端为终端,接收端为终端;或者,发送端为终端,接收端为基站;或者,发送端为基站,接收端为终端。
步骤902:根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
这里的接收处理包括选择合适的信号解调方法解调传输信号。
可选地,所述传输信号包括参考信号、数据信号和控制信号中的至少一项。
可选地,所述参考信号包括以下至少一项:
解调参考信号(Demodulation Reference Signal,DMRS);
探测参考信号(Sounding Reference Signal,SRS);
同步信号/物理广播信道信号块(Synchronization Signal and PBCH block,SSB);
主同步信号(Primary Synchronisation Signal,PSS);
辅同步信号(Secondary Synchronisation Signal,SSS);
跟踪参考信号(Tracking Reference Signal,TRS);
相位跟踪参考信号(Phase Tracking Reference Signal,PTRS);
信道状态信息参考信号(CSI Reference Signal,CSI-RS)。
本申请实施例中,接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;根据所述传输信号的传输特征信息,对所述传输信号进行接收处理,以补偿所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
可选地,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理,包括:
在根据第二信息确定所述传输信号是在功率放大器的非线性状态发送的情况下,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理;
其中,所述第二信息包括以下至少一项:
第一项:接收信号的控制信息,所述控制信息用于指示传输信号是否在所述非线性状态发送。
第二项:参考信号的图样,所述参考信号的图样与传输信号是否在所述非线性状态相关。
可选地,所述参考信号的图样根据以下至少一项确定:
(1)参考信号的图样指示信息;
例如,该图样指示信息为控制信息,通过该控制信息指示参考信号的图样;
(2)符号的功率信息。
例如,通过判断是否接收到功率较低的符号来确定参考信号的图样。
(3)序列检测信息。
可选地,在第A个符号检测序列,判断是否是参考信号,如果是参考信号,则认为发送端在线性区发送或是非线性发送。
第三项:上行传输调度信息,所述上行传输调度信息包括传输信号是否在所述非线性状态发送;
第四项:传输信号的功率信息。
该传输信号的功率信息包括以下至少一项:
接收信号范围内是否有不同的接收功率;
接收功率是否大于预设阈值的信息。
第五项:传输信号的重复传输信息。
接收端根据是否接收到目标符号的重复传输确定,即根据是否存在AGC确定,该目标符号可以是传输信号的第一个符号或最后一个符号。
本申请实施例中,接收端基于上述第二信息确定传输信号是否在功率放大器的非线性状态发送。
可选地,所述参考信号包括以下至少一项:
第一参考信号;
第二参考信号;
其中,所述第一参考信号用于辅助接收端估计所述传输信号的信道特征信息;
所述第二参考信号用于辅助接收端估计所述传输信号的非线性特征信息。
可选地,所述非线性特征信息是与传输信号关联的功率放大器的非线性状态。
可选地,所述第一参考信号是在所述功率放大器处于线性状态的情况下发送的;
所述第二参考信号是在所述功率放大器处于非线性状态的情况下发送的。
可选地,本申请实施例的方法,还包括:
获取第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
可选地,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
可选地,所述第一参考信号和所述第二参考信号满足以下至少一项:
所述第一参考信号的带宽小于所述第二参考信号的带宽;
所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;
所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
可选地,所述第一参考信号为梳状结构。
可选地,所述参考信号为恒包络信号或为非恒包络信号。
可选地,所述接收参考信号,包括:
周期性地接收所述参考信号;
或者,非周期性地接收所述参考信号;
或者,基于半静态的发送方式,接收所述参考信号;
或者,根据触发事件,接收所述参考信号。
可选地,所述触发事件包括以下至少一项:
发送端或接收端的非线性特性有效定时器失效;
发送端没有发送传输信号的时间大于第一阈值;
发送端发送传输信号的持续时间大于第二阈值;
功率放大器PA的非线性状态的变化值大于第三阈值;
接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值;
发送端需要发送传输信号;
发送端接收到发送传输信号的调度信息;
发送端发生波束失败或波束恢复或波束切换或功率放大器切换;
发送端发生状态切换;
发送端发生小区切换。
需要说明的是,上述参考信号已在发送端侧的方法实施例中进行详细描述,此处不再赘述。且发送端与接收端的交互过程已在发送端的方法实施例中进行详细描述,此处不再赘述。
本申请实施例中,接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;根据所述传输信号的传输特征信息,对所述传输信号进行接收处理,以减少所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
本申请实施例提供的信号传输方法,执行主体可以为信号传输装置。本申请实施例中以信号传输装置执行信号传输方法为例,说明本申请实施例提供的信号传输装置。
本申请实施例提供的信号处理方法,执行主体可以为信号处理装置。本申请实施例中以信号处理装置执行信号处理方法为例,说明本申请实施例提供的信号处理装置。
本申请实施例提供一种信号传输装置或信号处理装置,作为一种示例,该装置可以是通信设备或通信设备中的部件,例如芯片。该通信设备可以是终端、网络侧设备或服务器等。示例性的,终端可以包括但不限于上述所列举的终端11的类型,网络侧设备可以包括但不限于上述所列举的网络侧设备12的类型,本申请实施例不作具体限定。
信号传输装置或信号处理装置包括接收模块、发送模块和处理模块。其中,接收模块、发送模块和处理模块可以是通过软件实现,也可以通过硬件实现。当通过硬件实现时,处理模块可以由处理器实现,示例性的,处理器可以包括通用处理器、专用处理器等,例如处理器包括中央处理器(Central Processing Unit,CPU)、微处理器、数字信号处理器(Digital Signal Processor,DSP)、人工智能(Artificial Intelligent,AI)处理器、图形处理器(Graphics Processing Unit,GPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、网络处理器(Network Processor,NP)、现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、门电路、晶体管、分立硬件组件等。接收模块和发送模块可以由通信接口实现,通信接口可以包括收发器、管脚、电路、总线、射频单元等其中一种或多种。
具体的,参见图10,当信号传输装置为终端或终端中的部件时,或者为网络侧设备或网络侧设备中的部件时,信号传输装置1000包括:如图10所示,本申请实施例还提供了一种信号传输装置,包括:
第一发送模块1001,用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
可选地,所述参考信号包括以下至少一项:
第一参考信号;
第二参考信号;
其中,所述第一参考信号用于估计传输信号的信道特征信息;
所述第二参考信号用于估计传输信号的非线性特征信息。
可选地,所述传输信号的非线性特征信息是与传输信号关联的功率放大器的非线性状态。
可选地,所述第一参考信号是在所述发送端的功率放大器处于线性状态的情况下发送的;
所述第二参考信号是在所述发送端的功率放大器处于非线性状态的情况下发送的。
可选地,本申请实施例的装置,还包括:
第二发送模块,用于发送第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
可选地,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
可选地,所述第一参考信号和所述第二参考信号满足以下至少一项:
所述第一参考信号的带宽小于所述第二参考信号的带宽;
所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;
所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
可选地,所述第一参考信号为梳状结构。
可选地,所述参考信号为恒包络信号或为非恒包络信号。
可选地,所述第一发送模块用于:
周期性地发送所述参考信号;
或者,非周期性地发送所述参考信号;
或者,基于半静态的发送方式,发送所述参考信号;
或者,根据触发事件,发送所述参考信号。
可选地,所述触发事件包括以下至少一项:
发送端或接收端的非线性特性有效定时器失效;
发送端没有发送传输信号的时间大于第一阈值;
发送端发送传输信号的持续时间大于第二阈值;
功率放大器PA的非线性状态的变化值大于第三阈值;
接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值;
发送端需要发送传输信号;
发送端接收到发送传输信号的调度信息;
发送端发生波束失败或波束恢复或波束切换或功率放大器切换;
发送端发生状态切换;
发送端发生小区切换。
可选地,所述装置还包括:
第三发送模块,用于重复发送所述参考信号;
其中,重复发送的所述参考信号中,不同资源位置的参考信号对应不同的发送参数,所述发送参数包括波束、传输配置指示TCI、功率放大器和功率放大器集合中的至少一项;
或者,重复发送的所述参考信号中,对应同一个所述发送参数的不同参考信号的发送功率不同。
可选地,所述第一发送模块用于在第一资源上发送所述参考信号,所述第一资源关联传输信号的资源;
或者,在第二资源上发送所述参考信号,所述第二资源不关联所述传输信号的资源。
可选地,所述参考信号的频域范围大于所述传输信号的频域范围。
可选地,所述第一发送模块用于:
根据第一信息,确定参考信号的图样;
根据所述参考信号的图样,发送参考信号;
其中,所述第一信息包括以下至少一项:
发送端的功率放大器的非线性状态的变化;
调度相关信息;
第二指示信息,所述第二指示信息用于指示所述参考信号的图样;
传输信号的类型;
矢量幅度误差EVM或相邻频道泄漏比ACLR要求。
可选地,所述调度相关信息包括以下至少一项:
调度传输的时域位置;
上行功率控制信息;
业务类型;
符号的数量;
带宽;
调制编码方案MCS或MCS的调整方式;
调度信息指示的矢量幅度误差EVM/相邻频道泄漏比ACLR。
可选地,所述参考信号包括以下至少一项:
解调参考信号DMRS;
探测参考信号SRS;
同步信号/物理广播信道信号块SSB;
主同步信号PSS;
辅同步信号SSS;
跟踪参考信号TRS;
相位跟踪参考信号PTRS;
信道状态信息参考信号CSI-RS。
参见图11,当信息处理装置为终端或终端中的部件时,或者为网络侧设备或网络侧设备中的部件时,信息处理装置1100包括:第一接收模块1101,用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;
处理模块1102,用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
可选地,所述处理模块用于:
在根据第二信息确定所述传输信号是在功率放大器的非线性状态发送的情况下,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理;
其中,所述第二信息包括以下至少一项:
接收信号的控制信息,所述控制信息用于指示传输信号是否在所述非线性状态发送;
参考信号的图样,所述参考信号的图样与传输信号是否在所述非线性状态相关;
上行传输调度信息,所述上行传输调度信息包括传输信号是否在所述非线性状态发送;
传输信号的功率信息。
传输信号的重复传输信息。
可选地,所述参考信号包括以下至少一项:
第一参考信号;
第二参考信号;
其中,所述第一参考信号用于辅助接收端估计所述传输信号的信道特征信息;
所述第二参考信号用于辅助接收端估计所述传输信号的非线性特征信息。
可选地,所述非线性特征信息是与传输信号关联的功率放大器的非线性状态。
可选地,所述第一参考信号是在所述功率放大器处于线性状态的情况下发送的;
所述第二参考信号是在所述功率放大器处于非线性状态的情况下发送的。
可选地,本申请实施例的装置,还包括:
第二接收模块,用于获取第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
可选地,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
可选地,所述第一参考信号和所述第二参考信号满足以下至少一项:
所述第一参考信号的带宽小于所述第二参考信号的带宽;
所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;
所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
可选地,所述第一参考信号为梳状(comb)结构。
可选地,所述参考信号为恒包络信号或为非恒包络信号。
可选地,所述第一接收模块,用于:
周期性地接收所述参考信号;
或者,非周期性地接收所述参考信号;
或者,基于半静态的发送方式,接收所述参考信号;
或者,根据触发事件,接收所述参考信号。
可选地,所述触发事件包括以下至少一项:
发送端或接收端的非线性特性有效定时器失效;
发送端没有发送传输信号的时间大于第一阈值;
发送端发送传输信号的持续时间大于第二阈值;
功率放大器PA的非线性状态的变化值大于第三阈值;
接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值;
发送端需要发送传输信号;
发送端接收到发送传输信号的调度信息;
发送端发生波束失败或波束恢复或波束切换或功率放大器切换;
发送端发生状态切换;
发送端发生小区切换。
在本申请实施例中,发送端发送参考信号,所述参考信号用于估计传输信号的传输特征信息,使得接收端能够根据该参考信号估计传输信号的传输特征信息,便于接收端后续基于该传输特征信息对传输信号进行相应的接收处理,以减少所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
本申请实施例提供的信号传输装置能够实现图3至图8的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例提供的信号处理装置能够实现图9的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
如图12所示,本申请实施例还提供一种通信设备1200,包括处理器1201和存储器1202,存储器1202上存储有可在所述处理器1201上运行的程序或指令,例如,该通信设备1200为终端或网络侧设备时,该程序或指令被处理器1201执行时实现上述信号传输方法或信号处理方法实施例的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种终端,包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如图3或图9所示方法实施例中的步骤。该终端实施例与上述发送端侧方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。该终端可以是图10所示的信号传输装置或图11所示的信号处理装置。具体地,图13为实现本申请实施例的一种终端的硬件结构示意图。
该终端1300包括但不限于:射频单元1301、网络模块1302、音频输出单元1303、输入单元1304、传感器1305、显示单元1306、用户输入单元1307、接口单元1308、存储器1309以及处理器1310等中的至少部分部件。
本领域技术人员可以理解,终端1300还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器1310逻辑相连,从而通过电源管理系统实现管理充电、放电以及功耗管理等功能。图13中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元1304可以包括图形处理器13041和麦克风13042,图形处理器13041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1306可包括显示面板13061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板13061。用户输入单元1307包括触控面板13071以及其他输入设备13072中的至少一种。触控面板13071,也称为触摸屏。触控面板13071可包括触摸检测装置和触摸控制器两个部分。其他输入设备13072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元1301接收来自网络侧设备的下行数据后,可以传输给处理器1310进行处理;另外,射频单元1301可以向网络侧设备发送上行数据。通常,射频单元1301包括但不限于天线、放大器、收发器、耦合器、低噪声放大器、双工器等。
存储器1309可用于存储软件程序或指令以及各种数据。存储器1309可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作系统、至少一个功能(比如声音播放功能、图像播放功能等)所需的应用程序或指令等。此外,存储器1309可以包括易失性存储器或非易失性存储器。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请实施例中的存储器1309包括但不限于这些和任意其它适合类型的存储器。
处理器1310可包括一个或多个处理单元;可选的,处理器1310集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器1310中。
其中,在一些实施例中,射频单元1301,用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
本申请实施例中,发送参考信号,所述参考信号用于估计传输信号的传输特征信息,使得接收端能够根据该参考信号估计传输信号的传输特征信息,便于接收端后续基于该传输特征信息对传输信号进行相应的接收处理,以减少所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
在一些实施例中,射频单元1301,用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;处理器1310,用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
本申请实施例中,接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;根据所述传输信号的传输特征信息,对所述传输信号进行接收处理,以减少所接收的传输信号的失真,从而有效保证发送端发送的信号和接收端接收的信号的一致性。
可以理解,本实施例中提及的各实现方式的实现过程可以参照方法实施例信号处理方法或信号传输方法的相关描述,并达到相同或相应的技术效果,为避免重复,在此不再赘述。
本申请实施例还提供一种网络侧设备,包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如图3或图9所示的方法实施例的步骤。该网络侧设备实施例与上述接收端方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中,且能达到相同的技术效果。
具体地,本申请实施例还提供了一种网络侧设备,该网络侧设备可以是图11所示的信号处理装置或图10所示的信号传输装置。如图14所示,该网络侧设备1400包括:天线141、射频装置142、基带装置143、处理器144和存储器145。天线141与射频装置142连接。在上行方向上,射频装置142通过天线141接收信息,将接收的信息发送给基带装置143进行处理。在下行方向上,基带装置143对要发送的信息进行处理,并发送给射频装置142,射频装置142对收到的信息进行处理后经过天线141发送出去。
以上实施例中接收端或发送端执行的方法可以在基带装置143中实现,该基带装置143包括基带处理器。
基带装置143例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图14所示,其中一个芯片例如为基带处理器,通过总线接口与存储器145连接,以调用存储器145中的程序或指令,执行以上方法实施例中所示的网络侧设备操作。
该网络侧设备还可以包括网络接口146,该接口例如为通用公共无线接口(Common Public Radio Interface,CPRI)。
此外,本申请实施例的网络侧设备1400还包括:存储在存储器145上并可在处理器144上运行的程序或指令,处理器144调用存储器145中的程序或指令执行图10或图11所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述信号传输方法或信号处理方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器或网络侧设备中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。在一些示例中,可读存储介质可以是非瞬态的可读存储介质。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述信号传输方法或信号处理方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述信号传输方法或信号处理方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种无线通信系统,包括:发送端及接收端,所述发送端可用于执行如上所述的信号传输方法的步骤,所述接收端可用于执行如上所述的信号处理方法的步骤。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助计算机软件产品加必需的通用硬件平台的方式来实现,当然也可以通过硬件来实现。该计算机软件产品存储在存储介质(如ROM、RAM、磁碟、光盘等)中,计算机软件产品包括若干指令,用以使得终端或者网络侧设备执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式的实施方式,这些实施方式均属于本申请的保护之内。
Claims (44)
- 一种信号传输方法,由发送端执行,所述方法包括:发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
- 根据权利要求1所述的方法,其中,所述参考信号包括以下至少一项:第一参考信号;第二参考信号;其中,所述第一参考信号用于估计传输信号的信道特征信息;所述第二参考信号用于估计传输信号的非线性特征信息。
- 根据权利要求2所述的方法,其中,所述传输信号的非线性特征信息是与传输信号关联的功率放大器的非线性状态信息。
- 根据权利要求2或3所述的方法,其中,所述第一参考信号是在所述发送端的功率放大器处于线性状态的情况下发送的;所述第二参考信号是在所述发送端的功率放大器处于非线性状态的情况下发送的。
- 根据权利要求2至4任一项所述的方法,其中,还包括:发送第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
- 根据权利要求2至5任一项所述的方法,其中,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
- 根据权利要求2至6任一项所述的方法,其中,所述第一参考信号和所述第二参考信号满足以下至少一项:所述第一参考信号的带宽小于所述第二参考信号的带宽;所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
- 根据权利要求2至7任一项所述的方法,其中,所述第一参考信号为梳状结构。
- 根据权利要求2至8任一项所述的方法,其中,所述参考信号为恒包络信号或为非恒包络信号。
- 根据权利要求2至9任一项所述的方法,其中,所述发送参考信号,包括:周期性地发送所述参考信号;或者,非周期性地发送所述参考信号;或者,基于半静态的发送方式,发送所述参考信号;或者,根据触发事件,发送所述参考信号。
- 根据权利要求10所述的方法,其中,所述触发事件包括以下至少一项:发送端或接收端的非线性特性有效定时器失效;发送端没有发送传输信号的时间大于第一阈值;发送端发送传输信号的持续时间大于第二阈值;功率放大器PA的非线性状态的变化值大于第三阈值;接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值;发送端需要发送传输信号;发送端接收到发送传输信号的调度信息;发送端发生波束失败或波束恢复或波束切换或功率放大器切换;发送端发生状态切换;发送端发生小区切换。
- 根据权利要求1至11任一项所述的方法,其中,所述方法还包括:重复发送所述参考信号;其中,重复发送的所述参考信号中,不同资源位置的参考信号对应不同的发送参数,所述发送参数包括波束、传输配置指示TCI、功率放大器和功率放大器集合中的至少一项;或者,重复发送的所述参考信号中,对应同一个所述发送参数的不同参考信号的发送功率不同。
- 根据权利要求1至12任一项所述的方法,其中,所述发送参考信号,包括:在第一资源上发送所述参考信号,所述第一资源关联传输信号的资源;或者,在第二资源上发送所述参考信号,所述第二资源不关联所述传输信号的资源。
- 根据权利要求1至13任一项所述的方法,其中,所述参考信号的频域范围大于所述传输信号的频域范围。
- 根据权利要求1至13任一项所述的方法,其中,所述发送参考信号,包括:根据第一信息,确定参考信号的图样;根据所述参考信号的图样,发送参考信号;其中,所述第一信息包括以下至少一项:发送端的功率放大器的非线性状态的变化;调度相关信息;第二指示信息,所述第二指示信息用于指示所述参考信号的图样;传输信号的类型;矢量幅度误差EVM或相邻频道泄漏比ACLR要求。
- 根据权利要求15所述的方法,其中,所述调度相关信息包括以下至少一项:调度传输的时域位置;上行功率控制信息;业务类型;符号的数量;带宽;调制编码方案MCS或MCS的调整方式;调度信息指示的矢量幅度误差EVM/相邻频道泄漏比ACLR。
- 根据权利要求1至16任一项所述的方法,其中,所述参考信号包括以下至少一项:解调参考信号DMRS;探测参考信号SRS;同步信号/物理广播信道信号块SSB;主同步信号PSS;辅同步信号SSS;跟踪参考信号TRS;相位跟踪参考信息PTRS;信道状态信息参考信号CSI-RS。
- 一种信号处理方法,由接收端执行,所述方法包括:接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
- 根据权利要求18所述的方法,其中,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理,包括:在根据第二信息确定所述传输信号是在功率放大器的非线性状态发送的情况下,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理;其中,所述第二信息包括以下至少一项:接收信号的控制信息,所述控制信息用于指示传输信号是否在所述非线性状态发送;参考信号的图样,所述参考信号的图样与传输信号是否在所述非线性状态相关;上行传输调度信息,所述上行传输调度信息包括传输信号是否在所述非线性状态发送;传输信号的功率信息;传输信号的重复传输信息。
- 根据权利要求18或19所述的方法,其中,所述参考信号包括以下至少一项:第一参考信号;第二参考信号;其中,所述第一参考信号用于辅助接收端估计所述传输信号的信道特征信息;所述第二参考信号用于辅助接收端估计所述传输信号的非线性特征信息。
- 根据权利要求20所述的方法,其中,所述非线性特征信息是与传输信号关联的功率放大器的非线性状态。
- 根据权利要求20或21所述的方法,其中,所述第一参考信号是在功率放大器处于线性状态的情况下发送的;所述第二参考信号是在所述功率放大器处于非线性状态的情况下发送的。
- 根据权利要求20至22任一项所述的方法,其中,还包括:获取第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
- 根据权利要求20至23任一项所述的方法,其中,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
- 根据权利要求20至24任一项所述的方法,其中,所述第一参考信号和所述第二参考信号满足以下至少一项:所述第一参考信号的带宽小于所述第二参考信号的带宽;所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
- 根据权利要求20至25任一项所述的方法,其中,所述第一参考信号为梳状结构。
- 根据权利要求20至26任一项所述的方法,其中,所述参考信号为恒包络信号或为非恒包络信号。
- 根据权利要求20至27任一项所述的方法,其中,所述接收参考信号,包括:周期性地接收所述参考信号;或者,非周期性地接收所述参考信号;或者,基于半静态的发送方式,接收所述参考信号;或者,根据触发事件,接收所述参考信号。
- 根据权利要求28所述的方法,其中,所述触发事件包括以下至少一项:发送端或接收端的非线性特性有效定时器失效;发送端没有发送传输信号的时间大于第一阈值;发送端发送传输信号的持续时间大于第二阈值;功率放大器PA的非线性状态的变化值大于第三阈值;接收端的误码率、重传率或非确认消息NACK的传输率大于第四阈值,或者,接收端的数据传输正确率、重传率或确认消息的传输率小于第五阈值;发送端需要发送传输信号;发送端接收到发送传输信号的调度信息;发送端发生波束失败或波束恢复或波束切换或功率放大器切换;发送端发生状态切换;发送端发生小区切换。
- 一种信号传输装置,包括:第一发送模块,用于发送参考信号,所述参考信号用于估计传输信号的传输特征信息。
- 根据权利要求30所述的装置,其中,所述参考信号包括以下至少一项:第一参考信号;第二参考信号;其中,所述第一参考信号用于估计传输信号的信道特征信息;所述第二参考信号用于估计传输信号的非线性特征信息。
- 根据权利要求31所述的装置,其中,所述传输信号的非线性特征信息是与传输信号关联的功率放大器的非线性状态。
- 根据权利要求31或32所述的装置,其中,所述第一参考信号是在发送端的功率放大器处于线性状态的情况下发送的;所述第二参考信号是在所述发送端的功率放大器处于非线性状态的情况下发送的。
- 根据权利要求31至33任一项所述的装置,其中,还包括:第二发送模块,用于发送第一指示信息,所述第一指示信息用于指示所述第一参考信号的发送功率与所述第二参考信号的发送功率的第一差值,或者,用于指示所述第一参考信号对应的每个资源元素上的能量EPRE与所述第二参考信号对应的EPRE的第二差值,或者,用于指示所述第一参考信号的发送带宽与所述第二参考信号的发送带宽的第三差值,或者,用于指示所述第一参考信号的发送功率的绝对值或第二参考信号的发送功率的绝对值,或者,用于指示所述第一参考信号对应的EPRE的绝对值或第二参考信号对应的EPRE的绝对值,或者,用于指示所述第一参考信号的发送带宽的绝对值或第二参考信号的发送带宽的绝对值。
- 根据权利要求31至34任一项所述的装置,其中,所述第一参考信号和所述第二参考信号之间间隔K个时间单位,K为整数。
- 根据权利要求31至35任一项所述的装置,其中,所述第一参考信号和所述第二参考信号满足以下至少一项:所述第一参考信号的带宽小于所述第二参考信号的带宽;所述第一参考信号对应的时域位置与所述第二参考信号对应的时域位置不同;所述第一参考信号对应的序列与所述第二参考信号对应的序列不同。
- 一种信号处理装置,包括:第一接收模块,用于接收参考信号,所述参考信号用于辅助接收端估计所接收的传输信号的传输特征信息;处理模块,用于根据所述传输信号的传输特征信息,对所述传输信号进行接收处理。
- 根据权利要求37所述的装置,其中,所述处理模块用于:在根据第二信息确定所述传输信号是在功率放大器的非线性状态发送的情况下,根据所述传输信号的传输特征信息,对所述传输信号进行接收处理;其中,所述第二信息包括以下至少一项:接收信号的控制信息,所述控制信息用于指示传输信号是否在所述非线性状态发送;参考信号的图样,所述参考信号的图样与传输信号是否在所述非线性状态相关;上行传输调度信息,所述上行传输调度信息包括传输信号是否在所述非线性状态发送;传输信号的功率信息;传输信号的重复传输信息。
- 根据权利要求37或38所述的装置,其中,所述参考信号包括以下至少一项:第一参考信号;第二参考信号;其中,所述第一参考信号用于辅助接收端估计所述传输信号的信道特征信息;所述第二参考信号用于辅助接收端估计所述传输信号的非线性特征信息。
- 根据权利要求39所述的装置,其中,所述非线性特征信息是与传输信号关联的功率放大器的非线性状态。
- 根据权利要求39或40所述的装置,其中,所述第一参考信号是在功率放大器处于线性状态的情况下发送的;所述第二参考信号是在所述功率放大器处于非线性状态的情况下发送的。
- 一种通信设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至17任一项所述的信号传输方法的步骤,或者,实现如权利要求18至29任一项所述的信号处理方法的步骤。
- 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至17任一项所述的信号传输方法的步骤,或者,实现如权利要求18至29任一项所述的信号处理方法的步骤。
- 一种计算机程序产品,包括计算机指令,所述计算机指令被处理器执行时实现如权利要求1至17任一项所述的信号传输方法的步骤,或者,实现如权利要求18至29任一项所述的信号处理方法的步骤。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411007003.8 | 2024-07-25 | ||
| CN202411007003.8A CN121418052A (zh) | 2024-07-25 | 2024-07-25 | 信号传输方法、信号处理方法、装置及相关设备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2026021458A1 true WO2026021458A1 (zh) | 2026-01-29 |
Family
ID=98494051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2025/109973 Pending WO2026021458A1 (zh) | 2024-07-25 | 2025-07-22 | 信号传输方法、信号处理方法、装置及相关设备 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN121418052A (zh) |
| WO (1) | WO2026021458A1 (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152188A (zh) * | 2020-02-24 | 2022-10-04 | 高通股份有限公司 | 失真探索参考信号 |
| CN115413009A (zh) * | 2021-05-28 | 2022-11-29 | 华为技术有限公司 | 一种功率放大器非线性特征参数确定方法及相关装置 |
| US20230014042A1 (en) * | 2021-07-16 | 2023-01-19 | Qualcomm Incorporated | Over the air digital pre-distortion measurements |
| CN116097561A (zh) * | 2020-08-17 | 2023-05-09 | 高通股份有限公司 | 考虑与发送(tx)非线性关联的压缩因子的参考信号配置 |
| CN116671072A (zh) * | 2021-01-04 | 2023-08-29 | 高通股份有限公司 | 非线性参考信号设计 |
-
2024
- 2024-07-25 CN CN202411007003.8A patent/CN121418052A/zh active Pending
-
2025
- 2025-07-22 WO PCT/CN2025/109973 patent/WO2026021458A1/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115152188A (zh) * | 2020-02-24 | 2022-10-04 | 高通股份有限公司 | 失真探索参考信号 |
| CN116097561A (zh) * | 2020-08-17 | 2023-05-09 | 高通股份有限公司 | 考虑与发送(tx)非线性关联的压缩因子的参考信号配置 |
| CN116671072A (zh) * | 2021-01-04 | 2023-08-29 | 高通股份有限公司 | 非线性参考信号设计 |
| CN115413009A (zh) * | 2021-05-28 | 2022-11-29 | 华为技术有限公司 | 一种功率放大器非线性特征参数确定方法及相关装置 |
| US20230014042A1 (en) * | 2021-07-16 | 2023-01-19 | Qualcomm Incorporated | Over the air digital pre-distortion measurements |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121418052A (zh) | 2026-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240040511A1 (en) | Uplink power determination method, terminal and non-transitory readable storage medium | |
| JP2019533938A (ja) | アップリンク電力制御方法及び装置 | |
| US20200022142A1 (en) | Uplink transmit power control method and device | |
| CN117498912A (zh) | 信息传输的方法和执行其的用于转发信息的设备 | |
| EP4432615A1 (en) | Transmission method and apparatus, device, and storage medium | |
| CN117279015A (zh) | 能力上报处理方法、装置、终端及网络侧设备 | |
| WO2025152836A1 (zh) | 通信方法、装置、终端及网络侧设备 | |
| WO2026021458A1 (zh) | 信号传输方法、信号处理方法、装置及相关设备 | |
| WO2023241539A1 (zh) | 波束指示方法、装置及终端 | |
| WO2024022272A1 (zh) | 回传链路的传输配置确定方法、装置、中继设备及网络侧设备 | |
| WO2023198058A1 (zh) | 信息传输方法、装置、终端及网络侧设备 | |
| WO2023103912A1 (zh) | 分集传输方法、终端及网络侧设备 | |
| WO2026021456A1 (zh) | 信号处理方法、装置及相关设备 | |
| WO2022194200A1 (zh) | 终端操作、配置方法、装置、终端及网络侧设备 | |
| WO2022188681A1 (zh) | Pa的非线性校准方法和设备 | |
| CN115189807A (zh) | Harq进程号的确定、指示方法、装置、终端及网络侧设备 | |
| US20250385764A1 (en) | Apparatuses, methods, and computer programs for adaptive fdss filtering | |
| US11997027B2 (en) | Signal sending method, signal receiving method, and apparatus | |
| EP4668820A1 (en) | Information sending method, information receiving method, repeater and network device | |
| US11329782B2 (en) | Reference signal sending method, reference signal receiving method, network device, and terminal device | |
| WO2020056686A1 (zh) | 一种通信方法及装置 | |
| CN113632559B (zh) | 带宽部分切换机制 | |
| WO2025001987A1 (zh) | 感知导频配置方法及设备 | |
| WO2026067281A1 (zh) | 测量上报方法、接收方法、装置、设备、可读存储介质及计算机程序产品 | |
| CN121220013A (zh) | 相位噪声预补偿 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 25843892 Country of ref document: EP Kind code of ref document: A1 |