WO2018127157A1 - 一种上行信号发送方法、接收方法、终端及基站 - Google Patents

一种上行信号发送方法、接收方法、终端及基站 Download PDF

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Publication number
WO2018127157A1
WO2018127157A1 PCT/CN2018/071657 CN2018071657W WO2018127157A1 WO 2018127157 A1 WO2018127157 A1 WO 2018127157A1 CN 2018071657 W CN2018071657 W CN 2018071657W WO 2018127157 A1 WO2018127157 A1 WO 2018127157A1
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Prior art keywords
terminal
symbol
power difference
channel
power
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PCT/CN2018/071657
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English (en)
French (fr)
Inventor
赵兆
秦龙
纪刘榴
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华为技术有限公司
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Priority to EP18736707.3A priority Critical patent/EP3557829B1/en
Publication of WO2018127157A1 publication Critical patent/WO2018127157A1/zh
Priority to US16/502,950 priority patent/US20190327685A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to an uplink signal sending method, a receiving method, a terminal, and a base station.
  • the power control in the Long Term Evolution is mainly divided into a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • SRS Sounding Reference Signal
  • the basic criterion is open loop plus closed loop, wherein the open loop is based on the downlink reference signal, the terminal estimates the path loss Pathloss, and then performs uplink transmit power compensation; the closed loop, that is, the base station sends an instruction to the terminal according to the uplink uplink power of the receiving terminal, indicating the dynamic Power offset.
  • the purpose of the uplink power control is to ensure the correct reception of the signal and to ensure the level of interference between the terminals.
  • the existing LTE power control performs power control for PUSCH, PUCCH, and SRS respectively.
  • New Radio will support new scenarios, and the capabilities of the terminal will be enhanced, so the functions that can be supported are enhanced.
  • the uplink prefix will support Cyclic prefix-Orthogonal freq terminal cyber division multiplexing (CP-OFDM) technology, and at the same time, Orthogonal Frequency Division Multiplexing based on discrete Fourier extension (Discrete Fourier) Transform spread OFDM, DFT-s-OFDM), as a complementary technology, also needs support.
  • CP-OFDM Cyclic prefix-Orthogonal freq terminal cyber division multiplexing
  • OFDM Orthogonal Frequency Division Multiplexing based on discrete Fourier extension (Discrete Fourier) Transform spread OFDM, DFT-s-OFDM), as a complementary technology
  • the uplink supports both CP-OFDM and DFT-s-OFDM waveforms, and the two waveforms adopt a consistent pilot design, it is possible that both the CP-OFDM and the DFT-s-OFDM users in the NR support RS and channel multiplexing.
  • the PAPR on this OFDM symbol is higher than the PAPR of other OFDM symbols not multiplexed with the RS.
  • PAPR Peak-to-average Power Ratio
  • the embodiment of the present invention provides an uplink signal sending method, a receiving method, a terminal, and a base station, which are used to solve the problem that the PAPR of the OFDM symbol in the NR and the channel multiplexed OFDM symbol is higher than the PAPR of the OFDM symbol not multiplexed with the RS.
  • an embodiment of the present invention provides a method for transmitting an uplink signal, including:
  • the terminal determines an uplink transmit power of an uplink signal mapped on the target time-frequency resource according to the determined power difference, and sends the uplink signal by using the uplink transmit power.
  • the terminal receives the downlink signaling sent by the base station, determines the waveform used by the terminal according to the signaling, and determines the power difference corresponding to the target time-frequency resource according to the correspondence between the waveform and the power difference, and further determines the power according to the determined power.
  • the difference determines the uplink transmit power of the uplink signal mapped on the target time-frequency resource, and sends the uplink signal with the power, where the target time-frequency resource refers to the OFDM symbol of the RS and the channel multiplex, or may be the RS and the channel complex The RE of the mapped channel in the used OFDM symbol.
  • the power limited terminal can also perform normal data transmission, and optimize the transmission power utilization of the power limited terminal.
  • a power difference in the correspondence relationship represents a power difference between the first symbol and the second symbol, where the first symbol is a reference signal RS and a channel a multiplexed OFDM symbol, the second symbol being an OFDM symbol not multiplexed with the RS; or
  • the power difference in the correspondence relationship represents a power difference between a first RE in the first symbol and a second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second symbol For an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • the RS and channel multiplexed OFDM symbols refer to an RE that maps a reference signal and an RE that maps a channel on a plurality of time-frequency resources at the same time of one resource unit.
  • An OFDM symbol that is not multiplexed with an RS refers to a case where there are no mapped channels and mapped reference signals on a plurality of time-frequency resources at the same time of one resource unit.
  • One resource unit includes multiple time-frequency resources, such as one RB in LTE.
  • the time-frequency resource refers to the time and frequency domain unit of the resource mapping, such as an RE in LTE.
  • two definitions of power difference are given, which respectively correspond to two methods for reducing the transmission power of the terminal.
  • the transmission power is reduced for the entire OFDM symbol (ie, the first symbol), and second.
  • the transmission power is reduced for the RE in the first symbol, and different application scenarios can be corresponding to different terminal power control methods, and can be flexibly applied.
  • the RS is a reference signal for demodulation or a reference signal for channel sounding; It is an uplink data channel or an uplink control channel or a random access channel.
  • the waveform is a CP-OFDM
  • the corresponding power difference is different from the power difference corresponding to the waveform when the DFT-s-OFDM is used.
  • the downlink signaling is physical Layer signaling; or the downlink signaling is high layer signaling.
  • an uplink signaling method including:
  • the terminal determines, according to the downlink signaling, an uplink sending power of an uplink signal that is mapped on the target time-frequency resource, and sends the uplink signal by using the uplink sending power.
  • the terminal receives the downlink signaling sent by the base station, where the signaling indicates the power difference of the terminal on the target time-frequency resource, and the terminal determines, according to the downlink signaling, the uplink signal mapped on the target time-frequency resource.
  • the uplink transmit power, and the uplink signal is transmitted at the power, where the target time-frequency resource refers to the OFDM symbol of the RS and the channel multiplex, or may be the RE of the mapped channel in the OFDM symbol of the RS and the channel multiplex.
  • the power limited terminal can also perform normal data transmission, and optimize the transmission power utilization of the power limited terminal.
  • the power difference indicated by the downlink signaling indicates a power difference between the first symbol and the second symbol, where the first symbol is an RS and a channel complex An OFDM symbol used, the second symbol being an OFDM symbol not multiplexed with the RS; or
  • the power difference indicated by the downlink signaling indicates a power difference between the first RE in the first symbol and the second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second The symbol is an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • the RS is a reference signal for demodulation or a reference signal for channel sounding; the channel is an uplink data channel or an uplink control channel or a random access channel.
  • two definitions of power difference are given, which respectively correspond to two methods for reducing the transmission power of the terminal.
  • the transmission power is reduced for the entire OFDM symbol (ie, the first symbol), and second.
  • the transmission power is reduced for the RE in the first symbol, and different application scenarios can be corresponding to different terminal power control methods, and can be flexibly applied.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an uplink signal receiving method including:
  • the base station determines a power difference corresponding to an uplink signal on the target time-frequency resource according to a correspondence between a waveform and a power difference and a waveform used by the terminal, and parses the uplink signal according to the power difference.
  • the base station sends downlink signaling to the terminal, and the terminal determines the waveform used by the terminal according to the signaling, the base station receives the uplink signal that is sent by the terminal and is mapped to the target time-frequency resource, and the base station according to the correspondence between the waveform and the power difference and the terminal
  • the waveform used determines a power difference corresponding to the uplink signal on the target time-frequency resource, and parses the uplink signal according to the power difference.
  • the target time-frequency resource refers to an OFDM symbol that is RS-channel-multiplexed, or may be an RE of a mapped channel in an OFDM symbol of an RS and a channel.
  • the power limited terminal can also perform normal data transmission, and optimize the transmission power utilization of the power limited terminal.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides an uplink signal sending and receiving method, including:
  • the base station sends downlink signaling to the terminal, where the downlink signaling indicates a power difference of the terminal on the target time-frequency resource;
  • the base station parses the uplink signal according to a power difference on the target time-frequency resource.
  • the base station sends downlink signaling to the terminal, where the downlink signaling indicates the power difference of the terminal on the target time-frequency resource; the base station receives the uplink signal that is sent by the terminal and is mapped to the target time-frequency resource; and the base station according to the target time-frequency resource
  • the power difference is analyzed, and the uplink signal is parsed, wherein the target time-frequency resource refers to an OFDM symbol of the RS and the channel multiplex, or may be an RE of the mapped channel in the OFDM symbol of the RS and the channel multiplex.
  • the power limited terminal can also perform normal data transmission, and optimize the transmission power utilization of the power limited terminal.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides a terminal, including:
  • a receiving unit configured to receive downlink signaling sent by the base station, and determine, according to the downlink signaling, a waveform used by the terminal;
  • a power difference determining unit configured to determine, according to a correspondence between a waveform used by the terminal and a power difference, a power difference corresponding to the target time-frequency resource
  • a transmit power determining unit configured to determine, according to the determined power difference, an uplink transmit power of an uplink signal mapped on the target time-frequency resource
  • a sending unit configured to send the uplink signal by using the determined uplink transmit power.
  • the power difference in the correspondence relationship represents a power difference between the first symbol and the second symbol, where the first symbol is RS and channel multiplexing. OFDM symbol, the second symbol is an OFDM symbol not multiplexed with the RS; or
  • the power difference in the correspondence relationship represents a power difference between a first RE in the first symbol and a second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second symbol For an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • the RS is a reference signal for demodulation or a reference signal for channel sounding; It is an uplink data channel or an uplink control channel or a random access channel.
  • the waveform is a CP-OFDM
  • the corresponding power difference is different from the power difference corresponding to the waveform when the DFT-s-OFDM is used.
  • the downlink signaling is physical Layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides a terminal, including:
  • a receiving unit configured to receive downlink signaling sent by the base station, where the downlink signaling indicates a power difference of the terminal on the target time-frequency resource;
  • a transmit power determining unit configured to determine, according to the downlink signaling, an uplink transmit power of an uplink signal mapped on the target time-frequency resource
  • a sending unit configured to send the uplink signal by using the determined uplink transmit power.
  • the power difference indicated by the downlink signaling indicates a power difference between the first symbol and the second symbol, where the first symbol is an RS and a channel complex An OFDM symbol used, the second symbol being an OFDM symbol not multiplexed with the RS; or
  • the power difference indicated by the downlink signaling indicates a power difference between the first RE in the first symbol and the second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second The symbol is an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • the RS is a reference signal for demodulation or a reference signal for channel sounding; the channel is an uplink data channel or an uplink control channel or a random access channel.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides a base station, including:
  • a sending unit configured to determine a waveform used by the terminal, and send downlink signaling corresponding to the waveform to the terminal;
  • a receiving unit configured to receive an uplink signal that is sent by the terminal and mapped to a target time-frequency resource
  • a power difference determining unit configured to determine a power difference corresponding to an uplink signal on the target time-frequency resource according to a correspondence between a waveform and a power difference and a waveform used by the terminal;
  • a parsing unit configured to parse the uplink signal according to the power difference.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides a base station, including:
  • a sending unit configured to send downlink signaling to the terminal, where the downlink signaling indicates a power difference of the terminal on a target time-frequency resource
  • a receiving unit configured to receive an uplink signal that is sent by the terminal and mapped to a target time-frequency resource
  • a parsing unit configured to parse the uplink signal according to a power difference on the target time-frequency resource.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • the ninth aspect the application provides a terminal, including a processor, a transceiver, and a memory, where the processor may perform the uplink signaling method provided by the first aspect or any possible implementation manner of the first aspect;
  • the storage computer executes instructions for transmitting and receiving signaling and data.
  • the application provides a terminal, including a processor, a transceiver, and a memory; the processor may perform the uplink signaling method provided by any possible implementation of the second aspect or the second aspect;
  • the storage computer executes instructions for transmitting and receiving signaling and data.
  • the application provides a base station, including a processor, a transceiver, and a memory, where the processor can perform the uplink signal receiving method provided by any possible implementation manner of the third aspect or the third aspect;
  • the storage computer executes instructions for transmitting and receiving signaling and data.
  • the present application provides a base station, including a processor, a transceiver, and a memory, where the processor can perform the uplink signal receiving method provided by any possible implementation manner of the fourth aspect or the fourth aspect;
  • the storage computer executes instructions for transmitting and receiving signaling and data.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus in performing the corresponding functions of a network device (e.g., a base station) in the above method. For example, determining a power difference corresponding to an uplink signal on a target time-frequency resource.
  • the communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, downlink signaling is sent.
  • the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the network device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a base station, a gNB or a TRP, etc.
  • the communication unit may be a transceiver, or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above apparatus includes a transceiver, a processor, and a memory.
  • the processor is for controlling a transceiver transceiver signal for storing a computer program for executing a computer program in a memory, such that the apparatus performs the third aspect, or the fourth aspect, or the third aspect or the fourth A method in which a network device (such as a base station) is implemented in any of the possible implementations.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal in the above method. For example, determine the waveform used by the terminal.
  • the communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, receiving downlink signaling.
  • the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above apparatus includes a transceiver, a processor, and a memory.
  • the processor is for controlling a transceiver transceiver signal for storing a computer program for operating a computer program in the memory, such that the apparatus performs the first aspect, or the second aspect, or the first aspect or A method in which the terminal is completed in any of the possible implementations.
  • a system comprising the terminal and the network device.
  • a fourteenth aspect a computer readable storage medium for storing a computer program, the computer program comprising any one of the first to fourth aspects or any one of the first to fourth aspects The instructions of the method in the implementation.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any one of the above first to fourth aspects Or the method of any of the first to fourth aspects of the possible implementation.
  • FIG. 1 is a flowchart of uplink signal transmission and reception according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a target time-frequency resource according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of another target time-frequency resource according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a terminal according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a base station according to an embodiment of the present invention.
  • the embodiment of the present application can be applied to a 4G (fourth generation mobile communication system) evolution system, such as an LTE (Long Term Evolution) system, or can also be a 5G (fifth generation mobile communication system) system, such as adopting a new wireless system.
  • 4G fourth generation mobile communication system
  • LTE Long Term Evolution
  • 5G fifth generation mobile communication system
  • New RAT new radio access technology
  • CRAN Cloud Radio Access Network
  • a terminal also called a User Equipment (UE) is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • UE User Equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • a base station also known as a radio access network (RAN) device
  • RAN radio access network
  • eNB evolved Node B
  • RNC Radio network controller
  • NB Node B
  • BSC Base Station Controller
  • BBU Base Transceiver Station
  • HNB BaseBand Unit
  • BBU Base Station
  • TRP Transmitting and Receiving Point
  • TP Transmitting Point
  • AP Wifi Access Point
  • the NR system supports both CP-OFDM and DFT-s-OFDM waveforms.
  • NR can design a unified time-frequency mapping pattern of DMRS and/or SRS for two waveforms.
  • the design can facilitate the scheduling of users of the two waveforms for multi-user multiplexing. For example, in the non-orthogonal multiple access (NOMA) technology, two user terminals with different capabilities are scheduled. use.
  • NOMA non-orthogonal multiple access
  • DMRS such a design is advantageous for uplink and downlink unified pilot patterns, and reduces interference between the same frequency uplink and downlink in the dynamic scheduling uplink and downlink technology.
  • the unified pilot pattern design can reduce the complexity of the terminal implementation.
  • the specific unified pilot pattern design can support pilot and PUSCH or PUCCH time division, frequency division and the like.
  • the pilot and PUSCH or PUCCH can adopt frequency division.
  • a scheme can better utilize resources and improve system capacity.
  • DFT-s-OFDM in order to support such multiplexing, it is necessary to consider users with limited power.
  • the overall power peak-to-average ratio is reduced by reducing the PUSCH or PUCCH multiplexed with the RS.
  • an uplink signal sending and receiving method provided by an embodiment of the present invention includes:
  • Step 101 The base station determines a waveform used by the terminal.
  • Step 102 The base station sends downlink signaling to the terminal that has a corresponding relationship with the waveform.
  • Step 103 The terminal determines a power difference corresponding to the target time-frequency resource.
  • Step 104 The terminal determines an uplink sending power of the uplink signal mapped on the target time-frequency resource.
  • Step 105 The terminal sends an uplink signal according to the determined uplink transmit power.
  • Step 106 The base station determines a power difference corresponding to the uplink signal on the target time-frequency resource.
  • Step 107 The base station parses the uplink signal with a determined power difference.
  • the base station determines a waveform used by the terminal, and the waveform used by the terminal refers to a manner in which the terminal generates a baseband, and the waveform determined by the base station is divided into DFT-s-OFDM and CP-OFDM, wherein DFT-s - OFDM is a single-carrier technology, that is, the terminal uses a single carrier for transmission, and is mainly applicable to a terminal at a cell edge or a power-limited terminal; CP-OFDM is a multi-carrier multiplexing technology, and the terminal can transmit using multiple carriers.
  • DFT-s - OFDM is a single-carrier technology, that is, the terminal uses a single carrier for transmission, and is mainly applicable to a terminal at a cell edge or a power-limited terminal
  • CP-OFDM is a multi-carrier multiplexing technology, and the terminal can transmit using multiple carriers.
  • the terminal When the base station determines that the waveform used by the terminal is DFT-s-OFDM, the terminal performs DFT expansion on the signal that completes the time-frequency resource mapping, and then performs an inverse fast Fourier Transform (IFFT) to generate a baseband. signal;
  • IFFT inverse fast Fourier Transform
  • the terminal When the base station determines that the waveform used by the terminal is CP-OFDM, the terminal directly performs IFFT on the signal on which the time-frequency resource mapping is completed, thereby generating a baseband signal.
  • the base station may determine and schedule the terminal according to the type of reporting capability of the terminal (for example, the terminal is a low-power terminal or a high-power terminal, etc.), whether the terminal is at a cell edge or a center, and the like. Waveform type.
  • the base station sends, to the terminal, downlink signaling that has a corresponding relationship with the waveform, where the downlink signaling may display or implicitly indicate a waveform used by the terminal.
  • the display indicates that the waveform used by the terminal refers to The waveform information used by the terminal is sent to the terminal in the downlink signaling; the waveform used by the terminal is implicitly indicated that the downlink signaling itself does not include the waveform information, but the downlink signaling time and the frequency domain may be adopted.
  • the indication waveforms such as the location and the scrambled content mode, that is, when the terminal receives the downlink signaling, the terminal can determine the waveform according to the information such as the downlink signaling time, the frequency domain location, and the scrambling content mode.
  • the base station can send downlink signaling in the following manner:
  • the downlink signaling is high-level signaling
  • the base station sends high-level signaling to the terminal through the upper layer, where the downlink signaling can display or implicitly indicate the waveform used by the terminal.
  • the display indicates that the waveform used by the terminal is, in particular, the high-level configuration, which may be configured by public common, terminal-dedicated, or terminal group GROUP parameters.
  • the high-level configuration which may be configured by public common, terminal-dedicated, or terminal group GROUP parameters.
  • the domain of the signaling uplinkWaveform is used to indicate the waveform used by the terminal, and its value is ENUMERATED ⁇ CP-OFDM, DFT-s-OFDM ⁇ , meaning: in CP-OFDM and DFT-s-OFDM. Select one of the values as the value of the field.
  • the downlink signaling is physical layer signaling (for example, DCI signaling), and the base station sends DCI signaling to the terminal through the physical layer, where the DCI signaling can display a waveform indicating the use of the terminal.
  • DCI signaling for example, DCI signaling
  • the downlink signaling may be sent by using physical layer signaling, and the base station may implicitly notify the UE of the waveform by using a scrambling format of different PDCCH channels.
  • the base station sends the DCI signaling, where the DCI used to indicate various parameters used by the terminal for uplink scheduling is called the uplink grant UL Grant information, and thus the waveform is added by the UL grant.
  • the flag bit implements a waveform indicating the use of the terminal: in the waveform flag, 0 indicates a CP-OFDM waveform, 1 indicates a DFT-s-OFDM waveform, or 0 indicates a DFT-s-OFDM waveform, and 1 indicates a CP-OFDM waveform.
  • the waveform is indicated by default, for example configured to use CP-OFDM waveforms by default, or DFT-s-OFDM waveforms are used by default.
  • the base station configures the waveform used by the terminal on the target time-frequency resource through the high-layer signaling, and sends the waveform to the terminal through the DCI signaling display, that is, the mode is a combination of the foregoing mode 1 and mode 2.
  • Signaling when delivered, uses DCI signaling.
  • the terminal determines the power difference corresponding to the target time-frequency resource.
  • the target time-frequency resource refers to an OFDM symbol of the RS and the channel multiplexed; or the target time-frequency resource is an RE of the mapped channel on the OFDM symbol of the RS and the channel multiplexed.
  • the terminal can know the target time-frequency resource that needs to adjust power by:
  • the protocol map position of the pilot is defined in the protocol, and the base station learns the time-frequency resources mapped by the uplink pilot by using the scheduled time-frequency resource mapping manner, location, and the like.
  • One possible way is to pre-define the protocol, that is, to specify the determined uplink pilot (DMRS and/or SRS) and channel multiplexing (such as specifying that the DMRS and the PUSCH are in the same time domain location), thereby obtaining the terminal. Know the target time-frequency resources for adjusting power.
  • the foregoing Table 1 is pre-stored in the base station and the terminal.
  • the power difference can be obtained by searching the above table 1.
  • the power difference corresponding to the waveform is CP-OFDM and the waveform is In the DFT-s-OFDM, the corresponding power difference is different, that is, a and b in the above Table 1 are different.
  • the uplink signal corresponding to the DFT-s-OFDM is required.
  • the transmit power is smaller than the transmit power of the uplink signal corresponding to the CP-OFDM, that is, the transmit power of the DFT-s-OFDM is reduced by a larger amplitude, for example, for CP-OFDM, 1 dBm is down, and for DFT-s-OFDM , down 2dBm.
  • Embodiment 1 The power difference represents a power difference between the first symbol and the second symbol
  • FIG. 2 is a schematic diagram of a target time-frequency resource according to an embodiment of the present invention.
  • a target time-frequency resource refers to an OFDM symbol of an RS and a channel multiplex, as shown in FIG. 2, an OFDM symbol 7
  • the OFDM symbol 9 is a target time-frequency resource, where the RS mapped on the target time-frequency resource may be a reference signal used for uplink channel sounding, for example, may be a Sounding Reference Signal (SRS) or used for
  • the demodulated reference signal may be, for example, a Demodulation Reference Signal (DMRS), and the blank area on the target time-frequency resource is a channel for transmitting data, for example, may be an uplink uplink channel (PUSCH). ) or a physical uplink control channel (PUCCH) or a physical random access channel (PRACH).
  • PUSCH uplink uplink channel
  • PUCCH physical uplink control channel
  • PRACH physical random access channel
  • the power difference refers to the power difference between the first symbol and the second symbol
  • the first symbol is an OFDM symbol with RS and channel multiplexing
  • the second symbol is an OFDM symbol that is not multiplexed with the RS.
  • the RS and channel multiplexed OFDM symbols refer to an RE that maps a reference signal and an RE that maps a channel on a plurality of time-frequency resources at the same time of one resource unit.
  • An OFDM symbol that is not multiplexed with an RS refers to a case where there are no mapped channels and mapped reference signals on a plurality of time-frequency resources at the same time of one resource unit.
  • One resource unit includes multiple time-frequency resources, such as one RB in LTE.
  • the time-frequency resource refers to the time and frequency domain unit of the resource mapping, such as an RE in LTE.
  • the OFDM symbol mapped with the RS and the channel power control is performed on the entire OFDM symbol (ie, the target time-frequency resource), and the transmission power is reduced (including reducing the transmission power of the channel on the OFDM symbol and the RS). Transmit power).
  • Embodiment 2 The power difference represents a power difference between the first RE in the first symbol and the second RE in the second symbol
  • FIG. 3 is a schematic diagram of another target time-frequency resource according to an embodiment of the present invention.
  • a target time-frequency resource refers to a time-frequency of a mapping channel on an OFDM symbol of an RS and a channel multiplexed.
  • Resources, as shown in FIG. 3, white time-frequency resources (ie, white resource elements (RE)) on OFDM symbol 7 and OFDM symbol 9 are target time-frequency resources.
  • the power difference refers to the power difference between the RE on the first symbol and the RE of the second symbol
  • the first symbol is an OFDM symbol with RS and channel multiplexing
  • the second symbol is an OFDM symbol that is not multiplexed with the RS.
  • the transmission power is reduced (only the channel on the OFDM symbol is reduced) Transmitting power).
  • the terminal determines the uplink transmission power of the uplink signal mapped on the target time-frequency resource.
  • the terminal After determining the power difference corresponding to the waveform, the terminal can determine the uplink transmit power of the uplink signal mapped on the target time-frequency resource.
  • Method 1 Power reduction control in the power control process of PUSCH, PUCCH, PRACH, and SRS respectively
  • SRS and channel multiplexing reduce the power of the SRS symbol.
  • the set of symbols is called Sa
  • the remaining symbols containing only PUSCH and/or PUCCH and/or PRACH are called Sb.
  • the p(i) function refers to a value obtained by power control of PUSCH, PUCCH, PRACH, etc. according to the existing LTE (open loop and closed loop control, etc.)
  • k is a symbol number, within one subframe or time slot.
  • the symbols are divided into two categories, which respectively form two sets of symbols Sa and Sb.
  • the value of the function l(k) indicates the power offset of the symbol numbered k.
  • the function is a conditional function.
  • Method 2 Perform power control of PUSCH, PUCCH, PRACH, SRS, etc., and then perform power reduction operation on some symbols in the entire subframe, that is, RS and channel multiplexed symbols.
  • the power control of P PUSCH, c (i), P PUCCH, c (i), P SRS, c (i) is completed first, and the power P(i) of the entire symbol is obtained, and then the power is reduced, and the reduced value is obtained.
  • the 3dB power is reduced for the multiplexed symbols. It can be expressed as follows, where the formula here means that for the symbol k belonging to Sa, the indicated 3 dB power is reduced based on the P(i) of the existing power calculation.
  • the second method is more concise, but the first method can better adapt to the maximum power and prevent the waste of maximum power. Which method is selected depends on actual needs or configuration.
  • the terminal sends an uplink signal with a determined uplink transmission power.
  • the base station determines a power difference corresponding to the uplink signal on the target time-frequency resource.
  • the base station can determine the power difference corresponding to the uplink signal on the target time-frequency resource by searching the correspondence table as shown in Table 1 above.
  • the base station parses the uplink signal with a determined power difference.
  • the reception of the base station is divided into two parts: channel quality measurement and demodulation.
  • the DMRS and the PUSCH are multiplexed in the embodiment of the present invention, when demodulating, for the average power estimated by the DMRS, when the PUSCH is signal-detected, the reduced DMRS or the reduced PUSCH power should be compensated.
  • the embodiment of the present invention when used for multiplexing DMRS and PUCCH, when demodulating, for the average power estimated by the DMRS, when the signal is detected for the PUCCH, the power of the reduced DMRS or the reduced PUCCH should be compensated.
  • the embodiment of the present invention when used for multiplexing DMRS and PRACH, when demodulating, for the average power estimated by the DMRS, when the signal is detected for the PRACH, the reduced DMRS or the reduced PRACH power should be compensated.
  • the embodiment of the present invention when calculating the signal to interference and noise ratio, channel estimation, etc. by using SRS, the power of the reduced SRS or the power of the PUSCH or PUCCH or PRACH should be compensated to prevent the SRS calculated signal.
  • the dry noise ratio is inaccurate from the signal to interference and noise ratio experienced by the channel.
  • the protocol specifies or the base station sends signaling, and the terminal can learn the power difference between the RS and the channel multiplexed symbols and other symbols, thereby actively reducing the power of the RS and channel multiplexed OFDM symbols, thereby achieving a reduction.
  • the purpose of PAPR Alternatively, on the RS and channel multiplexed symbols, the power of the REs of the mapped RSs is not reduced, and the power of the REs of the mapped channels is reduced to achieve the purpose of reducing the PAPR on this symbol.
  • the signaling sent by the terminal base station is used to obtain the same channel, and the power difference between the RS and the channel multiplexing and the symbols not multiplexed with the RS.
  • the power of the RE symbol or the RS and the RE of the channel multiplexed symbol is reduced, and the power-limited terminal, such as the uplink transmission performance of the terminal using the DFT-s-OFDM, can be ensured.
  • the use of transmit power can be optimized.
  • the method for transmitting and receiving an uplink signal includes:
  • Step 401 The base station determines a power difference of the terminal on the target time-frequency resource.
  • Step 402 The base station sends downlink signaling to the terminal.
  • Step 403 The terminal determines an uplink sending power of the uplink signal mapped on the target time-frequency resource.
  • Step 404 The terminal sends an uplink signal by using the determined uplink transmit power.
  • Step 405 The base station parses the uplink signal according to the power difference on the target time-frequency resource.
  • the difference between the second embodiment of the present invention and the foregoing embodiment is that the base station directly determines the power difference of the terminal on the target time-frequency resource, and sends the power difference to the terminal through downlink signaling, thereby eliminating the need for waveforms, waveforms, and power.
  • the poor correspondence indicates that the terminal further determines the power difference.
  • the base station determines the power difference of the terminal on the target time-frequency resource, and the implementation manner of the power difference is the same as that in the first embodiment, and there are also two implementation manners:
  • Embodiment 1 The power difference represents a power difference between the first symbol and the second symbol
  • FIG. 2 is a schematic diagram of a target time-frequency resource according to an embodiment of the present invention.
  • a target time-frequency resource refers to an OFDM symbol of an RS and a channel multiplex, as shown in FIG. 2, an OFDM symbol 7
  • the OFDM symbol 9 is a target time-frequency resource, where the RS mapped on the target time-frequency resource may be a reference signal used for uplink channel sounding, for example, may be a Sounding Reference Signal (SRS) or used for
  • the demodulated reference signal may be, for example, a Demodulation Reference Signal (DMRS), and the blank area on the target time-frequency resource is a channel for transmitting data, for example, an uplink data channel or an uplink control channel or random access. channel.
  • SRS Sounding Reference Signal
  • DMRS Demodulation Reference Signal
  • the power difference refers to the power difference between the first symbol and the second symbol
  • the first symbol is an OFDM symbol with RS and channel multiplexing
  • the second symbol is an OFDM symbol that is not multiplexed with the RS.
  • the OFDM symbol mapped with the RS and the channel power control is performed on the entire OFDM symbol (ie, the target time-frequency resource), and the transmission power is reduced (including reducing the transmission power of the channel on the OFDM symbol and the RS). Transmit power).
  • Embodiment 2 The power difference represents a power difference between the first RE in the first symbol and the second RE in the second symbol
  • FIG. 3 is a schematic diagram of another target time-frequency resource according to an embodiment of the present invention.
  • a target time-frequency resource refers to a time-frequency of a mapping channel on an OFDM symbol of an RS and a channel multiplexed.
  • Resources, as shown in FIG. 3, white time-frequency resources (ie, white REs) on OFDM symbol 7 and OFDM symbol 9 are target time-frequency resources.
  • the power difference refers to the power difference between the RE on the first symbol and the RE of the second symbol
  • the first symbol is an OFDM symbol with RS and channel multiplexing
  • the second symbol is an OFDM symbol that is not multiplexed with the RS.
  • the transmission power is reduced (only the channel on the OFDM symbol is reduced) Transmitting power).
  • the base station sends downlink signaling to the terminal.
  • the downlink signaling is also sent in three ways, which are respectively through high layer signaling and physical layer signaling.
  • the downlink signaling is high-layer signaling
  • the base station sends high-level signaling to the terminal through the upper layer, where the high-level signaling indicates the power difference of the terminal on the target time-frequency resource.
  • the downlink signaling is physical layer signaling (for example, DCI signaling), and the base station sends DCI signaling to the terminal through the physical layer, where the DCI signaling indicates the power difference of the terminal on the target time-frequency resource.
  • DCI signaling indicates the power difference of the terminal on the target time-frequency resource.
  • the base station configures the power difference of the terminal on the target time-frequency resource through the high-layer signaling, and sends the power difference on the configured target time-frequency resource to the terminal through the DCI signaling, that is, the mode is the above-mentioned mode and mode.
  • high-level signaling is used when the power difference on the target time-frequency resource is configured
  • DCI signaling is used when the transmission is performed.
  • the terminal determines the uplink transmission power of the uplink signal mapped on the target time-frequency resource. That is, the terminal determines the uplink transmission power of the uplink signal on the target time-frequency resource according to the received power difference.
  • the terminal sends an uplink signal with the determined uplink transmit power.
  • the base station parses the uplink signal according to the power difference on the target time-frequency resource.
  • the specific implementation of the uplink signal analysis by the base station according to the power difference on the target time-frequency resource can be referred to the implementation in the first embodiment, and details are not described herein again.
  • the protocol specifies or the base station sends signaling, and the terminal can directly learn the power difference between the RS and the channel multiplexed symbols and other symbols, thereby actively reducing the power of the RS and the channel multiplexed OFDM symbols. Reduce the purpose of PAPR. Alternatively, on the RS and channel multiplexed symbols, the power of the REs of the mapped RSs is not reduced, and the power of the REs of the mapped channels is reduced to achieve the purpose of reducing the PAPR on this symbol.
  • the signaling sent by the terminal base station is used to obtain the same channel, and the power difference between the RS and the channel multiplexing and the symbols not multiplexed with the RS.
  • the power of the RE symbol or the RS and the RE of the channel multiplexed symbol can be reduced, and the power-limited terminal, such as the uplink transmission performance of the terminal using the DFT-s-OFDM, can be ensured.
  • the use of transmit power can be optimized.
  • the embodiment of the present invention provides a terminal 500, as shown in FIG. 5, including:
  • the receiving unit 501 is configured to receive downlink signaling sent by the base station, and determine, according to the downlink signaling, a waveform used by the terminal;
  • the power difference determining unit 502 is configured to determine, according to a correspondence between the waveform used by the terminal and the power difference, a power difference corresponding to the target time-frequency resource;
  • a transmit power determining unit 503, configured to determine, according to the determined power difference, an uplink transmit power of an uplink signal mapped on the target time-frequency resource;
  • the sending unit 504 is configured to send the uplink signal for the determined uplink transmit power.
  • the power difference in the correspondence relationship represents a power difference between the first symbol and the second symbol, where the first symbol is an RS and channel multiplexed OFDM symbol, and the second symbol is not multiplexed with the RS. OFDM symbol; or
  • the power difference in the correspondence relationship represents a power difference between a first RE in the first symbol and a second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second symbol For an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • the RS is a reference signal for demodulation or a reference signal for channel sounding; the channel is an uplink data channel or an uplink control channel or a random access channel.
  • the power difference corresponding to the waveform when the waveform is CP-OFDM is different from the power difference corresponding to the waveform when the waveform is DFT-s-OFDM.
  • the downlink signaling is sent by the base station by using a physical layer; or the downlink signaling is sent by the base station by using a high layer.
  • an embodiment of the present invention provides a terminal 600, as shown in FIG. 6, including:
  • the receiving unit 601 is configured to receive downlink signaling sent by the base station, where the downlink signaling indicates a power difference of the terminal on the target time-frequency resource;
  • the transmit power determining unit 602 is configured to determine, according to the downlink signaling, an uplink transmit power of an uplink signal mapped on the target time-frequency resource;
  • the sending unit 603 is configured to send the uplink signal for the determined uplink transmit power.
  • the power difference indicated by the downlink signaling indicates a power difference between the first symbol and the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second symbol is not a complex with the RS. OFDM symbol used; or
  • the power difference indicated by the downlink signaling indicates a power difference between the first RE in the first symbol and the second RE in the second symbol, where the first symbol is an RS and a channel multiplexed OFDM symbol, and the second The symbol is an OFDM symbol that is not multiplexed with the RS, the first RE is an RE for mapping a channel, and the second RE is an RE for mapping a channel.
  • an embodiment of the present invention provides a base station 700, as shown in FIG. 7, including:
  • the sending unit 701 is configured to determine a waveform used by the terminal, and send, to the terminal, downlink signaling that has a corresponding relationship with the waveform;
  • the receiving unit 702 is configured to receive an uplink signal that is sent by the terminal and is mapped to a target time-frequency resource.
  • the power difference determining unit 703 is configured to determine, according to a correspondence between the waveform and the power difference and a waveform used by the terminal, a power difference corresponding to the uplink signal on the target time-frequency resource;
  • the parsing unit 704 is configured to parse the uplink signal according to the power difference.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • an embodiment of the present invention provides a base station 800, as shown in FIG. 8, including:
  • the sending unit 801 is configured to send downlink signaling to the terminal, where the downlink signaling indicates a power difference of the terminal on the target time-frequency resource;
  • the receiving unit 802 is configured to receive an uplink signal that is sent by the terminal and is mapped to a target time-frequency resource;
  • the parsing unit 803 is configured to parse the uplink signal according to the power difference on the target time-frequency resource.
  • the downlink signaling is physical layer signaling; or the downlink signaling is high layer signaling.
  • the embodiment of the present invention further provides an uplink signal sending apparatus 900.
  • the sending apparatus 900 may be a terminal or a chip.
  • the sending apparatus includes: processing The processor 901, the memory 902 and the transceiver 903; the processor 901, the memory 902 and the transceiver 903 are all connected by a bus 904;
  • the memory 902 is configured to store computer execution instructions; the memory 902 may be integrated in the processor or may be set independently of the processor 901;
  • the processor 901 is configured to execute a computer execution instruction stored by the memory 902;
  • the processor 901 executes the computer-executed instructions stored in the memory 902, so that the sending device 900 performs the steps performed by the terminal in the foregoing uplink signal sending method provided by the embodiment of the present invention, or causes the terminal to deploy the corresponding step.
  • Functional unit
  • the processor 901 may include different types of processors 901, or include the same type of processor 901; the processor 901 may be any one of the following: a central processing unit (CPU), an ARM processor , Field Programmable Gate Array (FPGA), dedicated processor and other devices with computational processing capabilities. In an optional implementation manner, the processor 901 may also be integrated into a many-core processor.
  • processors 901 may include different types of processors 901, or include the same type of processor 901; the processor 901 may be any one of the following: a central processing unit (CPU), an ARM processor , Field Programmable Gate Array (FPGA), dedicated processor and other devices with computational processing capabilities.
  • the processor 901 may also be integrated into a many-core processor.
  • the memory 902 may be any one or any combination of the following: a random access memory (RAM), a read only memory (ROM), a non-volatile memory (non-volatile memory). , referred to as NVM), Solid State Drives (SSD), mechanical hard disks, disks, disk arrays and other storage media.
  • RAM random access memory
  • ROM read only memory
  • NVM non-volatile memory
  • SSD Solid State Drives
  • the transceiver 903 is configured to enable the transmitting device 900 to perform data interaction with other devices; for example, the terminal performs data interaction with the base station through the transceiver 903.
  • the transceiver 903 can be any one or any combination of the following: a network interface (such as an Ethernet interface), a wireless network card, and the like having a network access function.
  • the bus 904 can include an address bus, a data bus, a control bus, etc., for ease of representation, Figure 9 shows the bus with a thick line.
  • the bus 904 can be any one or any combination of the following: an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, and an extended industry standard structure ( Extended Industry Standard Architecture (EISA) bus and other devices for wired data transmission.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the embodiment of the present invention further provides a receiving apparatus 1000 for a base station uplink signal.
  • the receiving apparatus 1000 may be a base station, or may be a chip or the like.
  • the processor 1001 includes: The memory 1002 and the transceiver 1003; the processor 1001, the memory 1002, and the transceiver 1003 are all connected by a bus 1004;
  • the memory 1002 is configured to store computer execution instructions; the memory 1002 may be integrated in the processor or may be set independently of the processor 1001;
  • the processor 1001 is configured to execute a computer execution instruction stored by the memory 1002.
  • the processor 1001 executes the computer-executed instructions stored in the memory 1002, so that the base station 1000 performs the steps performed by the base station in the foregoing uplink signal receiving method provided by the embodiment of the present invention, or causes the base station to deploy the function corresponding to the step. unit;
  • the processor 1001 may include different types of processors 1001, or include the same type of processor 1001; the processor 1001 may be any one of the following: a central processing unit (CPU), an ARM processor , Field Programmable Gate Array (FPGA), dedicated processor and other devices with computational processing capabilities. In an optional implementation manner, the processor 1001 may also be integrated into a many-core processor.
  • processors 1001 may include different types of processors 1001, or include the same type of processor 1001; the processor 1001 may be any one of the following: a central processing unit (CPU), an ARM processor , Field Programmable Gate Array (FPGA), dedicated processor and other devices with computational processing capabilities. In an optional implementation manner, the processor 1001 may also be integrated into a many-core processor.
  • CPU central processing unit
  • FPGA Field Programmable Gate Array
  • the memory 1002 may be any one or any combination of the following: a random access memory (RAM), a read only memory (ROM), a non-volatile memory (non-volatile memory). , referred to as NVM), Solid State Drives (SSD), mechanical hard disks, disks, disk arrays and other storage media.
  • RAM random access memory
  • ROM read only memory
  • NVM non-volatile memory
  • SSD Solid State Drives
  • the transceiver 1003 is configured to enable the receiving device 1000 to perform data interaction with other devices; for example, the base station performs data interaction with the terminal through the transceiver 1003.
  • the transceiver 1003 may be any one or any combination of the following: a network interface (such as an Ethernet interface), a wireless network card, and the like having a network access function.
  • the bus 1004 can include an address bus, a data bus, a control bus, etc., for ease of representation, Figure 10 shows the bus with a thick line.
  • the bus 1004 may be any one or any combination of the following: an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, and an extended industry standard structure ( Extended Industry Standard Architecture (EISA) bus and other devices for wired data transmission.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores a computer executed instruction; the processor of the terminal or the base station executes the computer to execute an instruction, so that the terminal or the base station performs the uplink signal provided by the embodiment of the present invention.
  • Embodiments of the present invention provide a computer program product comprising computer executed instructions stored in a computer readable storage medium.
  • the processor of the terminal or the base station can read the computer execution instruction from the computer readable storage medium; the processor executes the computer to execute the instruction, so that the terminal or the base station performs the uplink signal sending method provided by the embodiment of the present invention, and is executed by the network management device. Steps, or cause the network management device to deploy a functional unit corresponding to the step.
  • embodiments of the invention may be provided as a method, system, or computer program product.
  • embodiments of the invention may be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • embodiments of the invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • Embodiments of the invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明公开了一种上行信号发送方法、接收方法、终端及基站，包括：终端接收基站下发的下行信令，根据下行信令确定终端使用的波形，终端根据波形与功率差的对应关系，确定目标时频资源对应的功率差，进而根据确定的功率差确定映射在目标时频资源上的上行信号的上行发送功率，并以该功率发送上行信号，其中，目标时频资源指的是RS与信道复用的OFDM符号，或者可以是RS与信道复用的OFDM符号中的映射信道的RE。该实施例，通过降低在目标时频资源上的上行信号的发射功率，达到降低RS与信道复用的OFDM符号，从而使得功率受限的终端也可以进行正常的数据发送，优化功率受限的终端的发射功率利用。

Description

一种上行信号发送方法、接收方法、终端及基站
本申请要求在2017年01月06日提交中华人民共和国知识产权局、申请号为201710011447.2、发明名称为“一种上行信号发送方法、接收方法、终端及基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种上行信号发送方法、接收方法、终端及基站。
背景技术
目前，长期演进(Long Term Evolution，LTE)中的功控主要分为对物理上行共享信道(hysical Uplink Shared Channel，PUSCH)、物理上行链路控制信道(Physical Uplink Control Channel，PUCCH)、物理随机接入信道(Physical Random Access Channel，PRACH)和信道探测参考信号(Sounding Reference Signal，SRS)的功控。基本准则是开环加闭环，其中，开环即根据下行参考信号，终端估计出路径损耗Pathloss，然后进行上行发射功率补偿；闭环即基站根据接收终端上行发送的功率，对终端发送指令，指示动态的功率偏移。上行功控的目的是保证信号的正确接收和保证终端之间的干扰水平。
LTE由于单载波特性，不存在SRS复用的场景，现有的LTE功控都是针对PUSCH、PUCCH和SRS分别进行功控的。
而在5G中，新空口(New radio，NR)将支持新的场景，终端的能力提升，因此能够支持的功能增强。NR中上行将支持循环前缀正交频分复用(Cyclic prefix-Orthogonal freq终端ncy division multiplexing，CP-OFDM)技术，与此同时，基于离散傅里叶扩展的正交频分复用(Discrete Fourier Transform spread OFDM，DFT-s-OFDM)作为补充技术，也需要支持。
由于上行支持CP-OFDM和DFT-s-OFDM两种波形，且两种波形采用一致的导频设计，所以NR中将可能CP-OFDM与DFT-s-OFDM用户都支持RS与信道复用。
当RS与信道在同一OFDM符号复用时，会导致这个OFDM符号上的PAPR高于其他未与RS复用的OFDM符号的PAPR。由于这样OFDM符号间的峰均比(Peak-to-average Power Ratio，PAPR)差，会导致一些终端设备采用功率回退的做法来满足峰值功率发射需求。但是，这样的功率回退措施造成了其余未与RS复用的符号也降低了发射功率，这样的性能损失对于这些符号是不公平的。
综上所述，在NR中，存在RS与信道复用的OFDM符号的PAPR比未与RS复用的OFDM符号的PAPR高的问题，进而导致功率受限的终端无法正常发送数据。
发明内容
本发明实施例提供一种上行信号发送方法、接收方法、终端及基站，用以解决NR中RS与信道复用的OFDM符号的PAPR比未与RS复用的OFDM符号的PAPR高的问题。
第一方面，本发明实施例提供一种上行信号的发送方法，包括：
终端接收基站下发的下行信令，根据所述下行信令，确定所述终端所使用的波形；
所述终端根据终端使用的波形与功率差的对应关系，确定目标时频资源对应的功率差；
所述终端根据确定的功率差，确定映射在所述目标时频资源上的上行信号的上行发送功率，并以所述上行发送功率发送所述上行信号。
本发明实施例，终端接收基站下发的下行信令，根据该信令确定终端使用的波形，终端根据波形与功率差的对应关系，确定目标时频资源对应的功率差，进而根据确定的功率差确定映射在目标时频资源上的上行信号的上行发送功率，并以该功率发送上行信号，其中，目标时频资源指的是RS与信道复用的OFDM符号，或者可以是RS与信道复用的OFDM符号中的映射信道的RE。该实施例，通过降低在目标时频资源上的上行信号的发射功率，达到降低RS与信道复用的OFDM符号或者降低RS与信道复用的OFDM符号上的映射信道的RE的PAPR的目的，从而使得功率受限的终端也可以进行正常的数据发送，优化功率受限的终端的发射功率利用。
结合第一方面，在第一方面的第一种可能的实现方式中，所述对应关系中的功率差表示第一符号与第二符号的功率差，所述第一符号为参考信号RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述对应关系中的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
其中，RS与信道复用的OFDM符号是指，在一个资源单元的同一时间的多个时频资源上，既有映射参考信号的RE，又有映射信道的RE。未与RS复用的OFDM符号是指在在一个资源单元的同一时间的多个时频资源上，不存在既映射信道和又映射参考信号的情况。其中，一个资源单元包括了多个时频资源，如LTE中的一个RB。时频资源是指资源映射的时间、频域单位，如LTE中的一个RE。
上述发明实施例中，给出了功率差的两种定义，分别对应两种降低终端发送功率的方法，第一种方式下，是对整个OFDM符号(即第一符号)降低发送功率，第二种方式下，是对第一符号中的RE降低发送功率，不同应用场景可对应不同的终端功率控制方法，可灵活应用。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，所述波形为CP-OFDM时对应的功率差与所述波形为DFT-s-OFDM时对应的功率差不相同。
结合第一方面或第一方面的第一种可能的实现方式至第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，所述下行信令为物理层信令；或者所述下行信令为高层信令。
第二方面，本发明实施例提供一种上行信号发送方法，包括：
终端接收基站下发的下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
所述终端根据所述下行信令，确定映射在所述目标时频资源上的上行信号的上行发送功率，并以所述上行发送功率发送所述上行信号。
本发明实施例，终端接收基站下发的下行信令，该信令指示终端在目标时频资源上的功率差，终端根据所述下行信令，确定映射在目标时频资源上的上行信号的上行发送功率，并以该功率发送上行信号，其中，目标时频资源指的是RS与信道复用的OFDM符号，或者可以是RS与信道复用的OFDM符号中的映射信道的RE。该实施例，通过降低在目标时频资源上的上行信号的发射功率，达到降低RS与信道复用的OFDM符号或者降低RS与信道复用的OFDM符号上的映射信道的RE的PAPR的目的，从而使得功率受限的终端也可以进行正常的数据发送，优化功率受限的终端的发射功率利用。
结合第二方面，在第二方面的第一种可能的实现方式中，所述下行信令指示的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述下行信令指示的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
其中，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
上述发明实施例中，给出了功率差的两种定义，分别对应两种降低终端发送功率的方法，第一种方式下，是对整个OFDM符号(即第一符号)降低发送功率，第二种方式下，是对第一符号中的RE降低发送功率，不同应用场景可对应不同的终端功率控制方法，可灵活应用。
所述下行信令为物理层信令；或者所述下行信令为高层信令。
第三方面，本发明实施例提供一种上行信号接收方法，包括：
基站确定终端使用的波形，并向终端发送与所述波形具有对应关系的下行信令；
所述基站接收所述终端发送的映射在目标时频资源的上行信号；
所述基站根据波形与功率差的对应关系以及所述终端使用的波形，确定所述目标时频资源上的上行信号对应的功率差，并根据所述功率差解析所述上行信号。
本发明实施例，基站向终端发送下行信令，终端根据该信令确定终端使用的波形，基站接收终端发送的映射在目标时频资源的上行信号，基站根据波形与功率差的对应关系以及终端使用的波形，确定目标时频资源上的上行信号对应的功率差，并根据所述功率差解析所述上行信号。其中，目标时频资源指的是RS与信道复用的OFDM符号，或者可以是RS与信道复用的OFDM符号中的映射信道的RE。该实施例，通过降低在目标时频资源上的上行信号的发射功率，达到降低RS与信道复用的OFDM符号或者降低RS与信道复用的OFDM符号上的映射信道的RE的PAPR的目的，从而使得功率受限的终端也可以进行正常的数据发送，优化功率受限的终端的发射功率利用。
结合第三方面，在第三方面的第一种可能的实现方式中，所述下行信令为物理层 信令；或者所述下行信令为高层信令。
第四方面，本发明实施例提供一种上行信号发接收方法，包括：
基站向终端发送下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
所述基站接收所述终端发送的映射在目标时频资源的上行信号；
所述基站根据所述目标时频资源上的功率差，解析所述上行信号。
本发明实施例，基站向终端发送下行信令，下行信令指示终端在目标时频资源上的功率差；基站接收终端发送的映射在目标时频资源的上行信号；述基站根据目标时频资源上的功率差，解析上行信号，其中，目标时频资源指的是RS与信道复用的OFDM符号，或者可以是RS与信道复用的OFDM符号中的映射信道的RE。该实施例，通过降低在目标时频资源上的上行信号的发射功率，达到降低RS与信道复用的OFDM符号或者降低RS与信道复用的OFDM符号上的映射信道的RE的PAPR的目的，从而使得功率受限的终端也可以进行正常的数据发送，优化功率受限的终端的发射功率利用。
结合第四方面，在第四方面的第一种可能的实现方式中，所述下行信令为物理层信令；或者所述下行信令为高层信令。
第五方面，本发明实施例提供一种终端，包括：
接收单元，用于接收基站下发的下行信令，根据所述下行信令，确定终端所使用的波形；
功率差确定单元，用于根据终端使用的波形与功率差的对应关系，确定目标时频资源对应的功率差；
发送功率确定单元，用于根据确定的功率差，确定映射在所述目标时频资源上的上行信号的上行发送功率；
发送单元，用于以确定的所述上行发送功率发送所述上行信号。
结合第五方面，在第五方面的第一种可能的实现方式中，所述对应关系中的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述对应关系中的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
结合第五方面或第五方面的第一种可能的实现方式或第五方面的第二种可能的实现方式，在第五方面的第三种可能的实现方式中，所述波形为CP-OFDM时对应的功率差与所述波形为DFT-s-OFDM时对应的功率差不相同。
结合第五方面或第五方面的第一种可能的实现方式至第五方面的第三种可能的实现方式，在第五方面的第四种可能的实现方式中，所述下行信令为物理层信令；或者所述下行信令为高层信令。
第六方面，本发明实施例提供一种终端，包括：
接收单元，用于接收基站下发的下行信令，所述下行信令指示终端在目标时频资源上的功率差；
发送功率确定单元，用于根据所述下行信令，确定映射在所述目标时频资源上的上行信号的上行发送功率；
发送单元，用于以确定的所述上行发送功率发送所述上行信号。
结合第六方面，在第六方面的第一种可能的实现方式中，所述下行信令指示的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述下行信令指示的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
其中，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
所述下行信令为物理层信令；或者所述下行信令为高层信令。
第七方面，本发明实施例提供一种基站，包括：
发送单元，用于确定终端使用的波形，并向终端发送与所述波形具有对应关系的下行信令；
接收单元，用于接收所述终端发送的映射在目标时频资源的上行信号；
功率差确定单元，用于根据波形与功率差的对应关系以及所述终端使用的波形，确定所述目标时频资源上的上行信号对应的功率差；
解析单元，用于根据所述功率差解析所述上行信号。
结合第七方面，在第七方面的第一种可能的实现方式中，所述下行信令为物理层信令；或者所述下行信令为高层信令。
第八方面，本发明实施例提供一种基站，包括：
发送单元，用于向终端发送下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
接收单元，用于接收所述终端发送的映射在目标时频资源的上行信号；
解析单元，用于根据所述目标时频资源上的功率差，解析所述上行信号。
结合第八方面，在第八方面的第一种可能的实现方式中，所述下行信令为物理层信令；或者所述下行信令为高层信令。
第九方面，本申请提供一种终端，包括处理器、收发器及存储器；所述处理器可执行第一方面或第一方面的任意可能实现方式提供的上行信号发送方法；所述存储器用于存储计算机执行指令，所述收发器用于收发信令及数据。
第十方面，本申请提供一种终端，包括处理器、收发器及存储器；所述处理器可执行第二方面或第二方面的任意可能实现方式提供的上行信号发送方法；所述存储器用于存储计算机执行指令，所述收发器用于收发信令及数据。
第十一方面，本申请提供一种基站，包括处理器、收发器及存储器；所述处理器可执行第三方面或第三方面的任意可能实现方式提供的上行信号接收方法；所述存储 器用于存储计算机执行指令，所述收发器用于收发信令及数据。
第十二方面，本申请提供一种基站，包括处理器、收发器及存储器；所述处理器可执行第四方面或第四方面的任意可能实现方式提供的上行信号接收方法；所述存储器用于存储计算机执行指令，所述收发器用于收发信令及数据。
进一步的，提供一种装置。
在一种可能的设计中，上述装置包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述装置执行上述方法中网络设备(如基站)相应的功能。例如，确定目标时频资源上的上行信号对应的功率差。所述通信单元用于支持所述装置与其他设备通信，实现接收和/或发送功能。例如，发送下行信令。
可选的，所述装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存网络设备必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
所述装置可以为基站，gNB或TRP等，所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中，上述装置，包括收发器、处理器和存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于运行存储器中的计算机程序，使得该装置执行第三方面，或第四方面，或，第三方面或第四方面中任一种可能实现方式中网络设备(如基站)完成的方法。
在一种可能的设计中，上述装置包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述装置执行上述方法中终端相应的功能。例如，确定终端所使用的波形。所述通信单元用于支持所述装置与其他设备通信，实现接收和/或发送功能。例如，接收下行信令。
可选的，所述装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
所述装置可以为智能终端或者可穿戴设备等，所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中，上述装置，包括收发器、处理器和存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该装置执行第一方面，或，第二方面，或第一方面或第二方面中任一种可能实现方式中终端完成的方法。
第十三方面，提供了一种系统，该系统包括上述终端和网络设备。
第十四方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行第一至第四方面中任一种或第一至第四方面中任一种可能实现方式中的方法的指令。
第十五方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程 序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述第一至第四方面中任一种或第一至第四方面中任一种可能实现方式中的方法。
附图说明
图1为本发明实施例提供的上行信号发送及接收流程图；
图2为本发明实施例提供的一种目标时频资源示意图；
图3为本发明实施例提供的另一种目标时频资源示意图；
图4为本发明实施例提供的上行信号发送及接收方法流程图；
图5为本发明实施例提供的终端示意图；
图6为本发明实施例提供的终端示意图；
图7为本发明实施例提供的基站示意图；
图8为本发明实施例提供的基站示意图；
图9为本发明实施例提供的终端示意图；
图10为本发明实施例提供的基站示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图及实施例对本发明作进一步地详细描述。
本申请实施例可以适用于4G(第四代移动通信系统)演进系统，如LTE(Long Term Evolution，长期演进)系统，或者还可以为5G(第五代移动通信系统)系统，如采用新型无线接入技术(new radio access technology，New RAT)的接入网；CRAN(Cloud Radio Access Network，云无线接入网)等通信系统。以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)、终端，又称之为用户设备(User Equipment，UE)，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。常见的终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
2)、基站，又称为无线接入网(Radio Access Network，RAN)设备是一种将终端接入到无线网络的设备，包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)、基站(g NodeB，gNB),传输点(Transmitting and receiving point，TRP)，发射点(Transmitting point，TP)。此外，还可以包括Wifi接入点(Access Point，AP)等。
NR系统支持CP-OFDM和DFT-s-OFDM两种波形。基于以下三点原因，NR可为两种波形设计统一的DMRS和/或SRS的时频映射图样。第一，这样设计可以便于调度两种波形的用户做多用户复用的场景，如在非正交多址(Non-orthogonal multiple access，NOMA)的技术中会调度两个能力不同的用户终端复用。第二、对于DMRS，这样的设计有利于上下行统一导频图样，减小在动态调度上下行的技术中的同频上下 行之间的干扰。第三、统一的导频图案设计可以减少终端实现复杂度。具体的统一导频图案设计可支持导频与PUSCH或PUCCH时分、频分等方式。对于CP-OFDM的用户，其导频与PUSCH或PUCCH可以采用频分的方式，与LTE系统中导频占据整个OFDM符号的方案相比，这样的方案能够更好地利用资源，提高系统容量。对于DFT-s-OFDM，为了也支持这样的复用方式，则需要考虑功率受限的用户。如对于功率峰均比受限的用户，通过降低与RS复用的PUSCH或PUCCH的方式降低整体的功率峰均比。
实施例一
如图1所示，为本发明实施例提供的上行信号发送及接收方法，包括：
步骤101、基站确定终端使用的波形。
步骤102、基站向终端发送与所述波形具有对应关系的下行信令。
步骤103、终端确定目标时频资源对应的功率差。
步骤104、终端确定映射在目标时频资源上的上行信号的上行发送功率。
步骤105、终端以确定的上行发送功率发送上行信号。
步骤106、基站确定目标时频资源上的上行信号对应的功率差。
步骤107、基站以确定的功率差解析上行信号。
具体地，上述步骤101中，基站确定终端使用的波形，终端使用的波形指的是终端生成基带的方式，且基站确定的波形分为DFT-s-OFDM和CP-OFDM，其中，DFT-s-OFDM是单载波技术，即终端使用单载波进行传输，主要适用于处于小区边缘或功率受限的终端；CP-OFDM为多载波复用技术，终端可以使用多载波进行传输。
当基站确定终端使用的波形为DFT-s-OFDM时，终端对完成了时频资源映射的信号先进行DFT扩展，再进行快速傅里叶逆变换(Inverse Fast Fourier Transform，IFFT)，从而生成基带信号；
当基站确定终端使用的波形为CP-OFDM时，终端直接对完成了时频资源映射的信号进行IFFT，从而生成基带信号。
具体地，基站确定终端使用的波形时，可根据终端的上报能力类型(例如终端为低功耗终端或高功耗终端等)、终端处于小区边缘还是中心等，来确定和调度终端所使用的波形类型。
上述步骤102中，基站向终端发送与所述波形具有对应关系的下行信令，该下行信令可显示或隐式地指示终端使用的波形，具体地，显示地指示终端使用的波形指的是将终端使用的波形信息放入下行信令中发送至终端；隐式地指示终端使用的波形指的是下行信令本身不包含有波形信息，但是可通过下行信令的下发时间、频域位置、加扰内容方式等指示波形，即终端在接收到下行信令时，可根据下行信令的下发时间、频域位置、加扰内容方式等信息，确定出波形。
并且，基站可通过下列方式发送下行信令：
方式一、下行信令为高层信令
该方式下，下行信令为高层信令，基站通过高层向终端发送高层信令，该下行信令可显示或隐式地指示终端使用的波形。
以显示指示终端使用的波形为，具体地，高层配置，可以是通过公共common、 终端专用delicated、或者是终端组GROUP参数配置。举一个终端delicated的例子：
PUSCH-ConfigDelicated::＝SEQUENCE{
uplinkWaveform ENUMERATED{CP-OFDM，DFT-s-OFDM}
}
该例中，信令uplinkWaveform的域是用来指示终端使用的波形，其取值为ENUMERATED{CP-OFDM，DFT-s-OFDM}，意思是：在CP-OFDM和DFT-s-OFDM两个取值中选取一个作为该域的值。
方式二、下行信令为物理层信令
该方式下，下行信令为物理层信令(例如为DCI信令)，基站通过物理层向终端发送DCI信令，该DCI信令可显示指示终端使用的波形。
或者，还可以是通过物理层信令下发下行信令，基站可通过不同的PDCCH信道的加扰格式隐式地告知UE波形的情况。
以显示指示终端使用的波形为，在协议中，基站下发DCI信令，其中，用于指示终端上行调度使用的各种参数的DCI称为上行授权UL Grant信息，因而通过在UL grant增加波形标志位实现指示终端使用的波形：波形标志位中，0表示CP-OFDM波形，1表示DFT-s-OFDM波形，或者0表示DFT-s-OFDM波形，1表示CP-OFDM波形。
或者采用默认方式指示波形，例如配置成默认使用CP-OFDM波形，或默认使用DFT-s-OFDM波形。
方式三、通过高层信令+物理层信令
该方式下，基站通过高层信令配置终端在目标时频资源上使用的波形，并通过DCI信令显示地发送至终端，即该方式是上述方式一和方式二的结合，配置波形时采用高层信令，下发时则采用DCI信令。
上述步骤103中，终端确定目标时频资源对应的功率差。其中，目标时频资源指的是RS与信道复用的OFDM符号；或者目标时频资源为RS与信道复用的OFDM符号上的映射信道的RE。
并且，终端可以通过下述方式得知需要调整功率的目标时频资源：
协议中定义导频的图案映射位置，基站通过调度的时频资源映射方式、位置等，得知上行导频所映射的时频资源。一种可能的方式是通过协议预定义的方式，即规定确定的上行导频(DMRS和/或SRS)与信道复用(如规定DMRS与PUSCH在同一时域位置复用)，由此终端得知调整功率的目标时频资源。
在通信过程中，协议中定义不同的波形对应不同的功率差。例如如表1所示，为波形与功率差的对应关系表：
上行波形 功率差
CP-OFDM a
DFT-s-OFDM b
表1
上述表1预存于基站和终端，当终端确定基站指示的波形时，可通过查找上述表1，得知功率差，具体地，所述波形为CP-OFDM时对应的功率差与所述波形为DFT-s-OFDM时对应的功率差不相同，即上述表1中的a和b不相同，具体实施中， 一般地，通过功率差的调整之后，需要使得DFT-s-OFDM对应的上行信号的发射功率要小于CP-OFDM对应的上行信号的发射功率，即对于DFT-s-OFDM的发射功率的下调幅度要大些，例如，对于CP-OFDM，下调1dBm，而对于DFT-s-OFDM，下调2dBm。一个具体的实现方式中，可以使得上述表1中的a＝0，b＝-3，即CP-OFDM对应的发射功率不变，DFT-s-OFDM对应的发射功率下调3dBm。
本发明实施例中，给出了两种功率差的实施方式，具体实施过程中，可视实际需要而定，选择其中一种实施方式：
实施方式一、功率差表示第一符号与第二符号的功率差
如图2所示，为本发明实施例提供的目标时频资源示意图，其中，图2中，目标时频资源指的是RS与信道复用的OFDM符号，如图2所示，OFDM符号7和OFDM符号9均为目标时频资源，其中，目标时频资源上映射的RS可以是用于上行信道探测的参考信号，例如可以是信道探测参考信号(Sounding reference signal，SRS)或者是用于解调的参考信号，例如可以是解调参考信号(Demodulation reference signal，DMRS)，目标时频资源上的空白区域为信道，用于传输数据，例如可以是上行数据信道(Physical uplink shared channel，PUSCH)或上行控制信道(Physical uplink control channel，PUCCH)或物理随机接入信道(Physical Random Access Channel，PRACH)。
此时，功率差指的是第一符号与第二符号的功率差，第一符号为RS与信道复用的OFDM符号，第二符号为未与RS复用的OFDM符号。
其中，RS与信道复用的OFDM符号是指，在一个资源单元的同一时间的多个时频资源上，既有映射参考信号的RE，又有映射信道的RE。未与RS复用的OFDM符号是指在在一个资源单元的同一时间的多个时频资源上，不存在既映射信道和又映射参考信号的情况。其中，一个资源单元包括了多个时频资源，如LTE中的一个RB。时频资源是指资源映射的时间、频域单位，如LTE中的一个RE。
即，在实施方式一中，对于映射有RS和信道的OFDM符号，对整个OFDM符号(即目标时频资源)进行功率控制，降低发射功率(包括降低OFDM符号上的信道的发射功率和RS的发射功率)。
实施方式二、功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差
如图3所示，为本发明实施例提供的另一种目标时频资源示意图，其中，图3中，目标时频资源指的是RS与信道复用的OFDM符号上的映射信道的时频资源，如图3所示，OFDM符号7和OFDM符号9上的白色时频资源(即白色的资源元素(Resource Element，RE))均为目标时频资源。
此时，功率差指的是第一符号上的RE与第二符号的RE的功率差，第一符号为RS与信道复用的OFDM符号，第二符号为未与RS复用的OFDM符号。
即，在实施方式二中，对于映射有RS和信道的OFDM符号，只对该OFDM符号上映射信道的RE(即目标时频资源)进行功率控制，降低发射功率(只降低OFDM符号上的信道的发射功率)。
上述步骤104中，终端确定映射在目标时频资源上的上行信号的上行发送功率。
终端在确定了波形对应的功率差后，因而可以确定映射在目标时频资源上的上行信号的上行发送功率。
具体地，可通过以下几种可能的方式实现：
方法一、在PUSCH、PUCCH、PRACH、SRS分别的功率控制过程中降功率控制
如SRS与信道复用，降低SRS符号的功率，该符号的集合称为Sa，其余仅包含PUSCH和/或PUCCH和/或PRACH的符号称为Sb。如下所示，p(i)函数是指按照现有LTE对PUSCH、PUCCH、PRACH等的功率控制方式得到的值(开环与闭环控制等)，k为符号编号，一个子帧或时隙内的符号分为两类，分别组成两个符号集合Sa和Sb，该函数l(k)值指示编号为k的符号的功率偏移量，该函数是一个条件函数，当k属于Sa时，l(k)的值是value，当k属于Sb时，l(k)的值是0。如配置成k属于Sa，则为-3dB，k属于Sb，则l(k)＝0。这里的value＝-3dB，该值由上述基站配置的信令得到。
Figure PCTCN2018071657-appb-000001
Figure PCTCN2018071657-appb-000002
Figure PCTCN2018071657-appb-000003
Figure PCTCN2018071657-appb-000004
方法二、先完成PUSCH、PUCCH、PRACH、SRS等的功率控制，再对整个子帧中的部分符号，即RS与信道复用的符号，进行降功率操作。
即，先完成P PUSCH,c(i)，P PUCCH,c(i)，P SRS,c(i)的功率控制，得到整个符号的功率P(i)，再进行降功率，降低的值为基站所配置信令指示的值。如对复用符号降低3dB功率。则可以表示为，这里公式的意思是，对于属于Sa的符号k在现有功率计算的P(i)的基础上，降低所指示的3dB功率。
P(i,k∈Sa)＝P(i)-3。
其中，第二种方法更为简洁，但第一种方法能够更好地适应最大功率，防止最大功率的浪费。具体选用哪种方式，可以视实际需要或配置而定。
上述步骤105中，终端以确定的上行发送功率发送上行信号。
上述步骤106中，基站确定目标时频资源上的上行信号对应的功率差。
具体地，基站可以通过查找如上述表1所示的对应关系表，从而可以确定目标时频资源上的上行信号所对应的功率差。
上述步骤107中，基站以确定的功率差解析上行信号。
具体地，基站的接收分为信道质量测量和解调两部分。
当本发明实施例用于DMRS与PUSCH复用时，在解调时，对于DMRS估计出的平均功率，在对PUSCH进行信号检测的时候，应补偿降低的DMRS的或降低的PUSCH的功率。
当本发明实施例用于DMRS与PUCCH复用时，在解调时，对于DMRS估计出的平均功率，在对PUCCH进行信号检测的时候，应补偿降低的DMRS的或降低的PUCCH的功率。
当本发明实施例用于DMRS与PRACH复用时，在解调时，对于DMRS估计出的平均功率，在对PRACH进行信号检测的时候，应补偿降低的DMRS的或降低的PRACH的功率。
当本发明实施例用于SRS的信道质量测量时，用SRS计算信干噪比、信道估计等时，应将降低的SRS的功率或PUSCH或PUCCH或PRACH的功率补偿，防止SRS计算得到的信干噪比与信道经历的信干噪比有误差。
本发明上述实施例具有如下有益效果：
根据本实施案例，协议规定或基站发送信令，终端可得知在RS与信道复用的符号上与其他符号的功率差，从而可以主动降低RS与信道复用的OFDM符号的功率，达到降低PAPR的目的。或者是，在RS与信道复用的符号上，不降低映射RS的RE的功率，而降低映射信道的RE的功率，以达到降低这个符号上的PAPR的目的。终端基站下发的该信令，通过查表方式得知同一种信道，在RS与信道复用和未与RS复用的符号的功率差。
该实施例一通过引入功率差，降低RS符号或RS与信道复用的符号上的RE的功率，能够适应功率受限的终端，如使用DFT-s-OFDM的终端的上行传输性能，从而保证了在功率受限的场景下，能够优化利用发射功率。
实施例二
如图4所示，为本发明实施例提供的上行信号发送及接收方法，包括：
步骤401、基站确定终端在目标时频资源上的功率差。
步骤402、基站向终端发送下行信令。
步骤403、终端确定映射在目标时频资源上的上行信号的上行发送功率。
步骤404、终端以确定的上行发送功率发送上行信号。
步骤405、基站根据目标时频资源上的功率差，解析上行信号。
本发明实施例二与上述实施例一的区别在于，基站是直接确定终端在目标时频资源上的功率差，并将功率差通过下行信令发送给终端，从而不需要通过波形及波形与功率差的对应关系来指示终端进一步确定出功率差。
上述步骤401中，基站确定终端在目标时频资源上的功率差，并且功率差的实施方式，同上述实施例一相同，也有两种实施方式：
实施方式一、功率差表示第一符号与第二符号的功率差
如图2所示，为本发明实施例提供的目标时频资源示意图，其中，图2中，目标时频资源指的是RS与信道复用的OFDM符号，如图2所示，OFDM符号7和OFDM符号9均为目标时频资源，其中，目标时频资源上映射的RS可以是用于上行信道探测的参考信号，例如可以是信道探测参考信号(Sounding reference signal，SRS)或者是用于解调的参考信号，例如可以是解调参考信号(Demodulation reference signal，DMRS)，目标时频资源上的空白区域为信道，用于传输数据，例如可以上行数据信道或上行控制信道或随机接入信道。
此时，功率差指的是第一符号与第二符号的功率差，第一符号为RS与信道复用的OFDM符号，第二符号为未与RS复用的OFDM符号。
即，在实施方式一中，对于映射有RS和信道的OFDM符号，对整个OFDM符号 (即目标时频资源)进行功率控制，降低发射功率(包括降低OFDM符号上的信道的发射功率和RS的发射功率)。
实施方式二、功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差
如图3所示，为本发明实施例提供的另一种目标时频资源示意图，其中，图3中，目标时频资源指的是RS与信道复用的OFDM符号上的映射信道的时频资源，如图3所示，OFDM符号7和OFDM符号9上的白色时频资源(即白色的RE)均为目标时频资源。
此时，功率差指的是第一符号上的RE与第二符号的RE的功率差，第一符号为RS与信道复用的OFDM符号，第二符号为未与RS复用的OFDM符号。
即，在实施方式二中，对于映射有RS和信道的OFDM符号，只对该OFDM符号上映射信道的RE(即目标时频资源)进行功率控制，降低发射功率(只降低OFDM符号上的信道的发射功率)。
上述步骤402中，基站向终端发送下行信令。
类似于实施例一中下行信令的发送方式，该步骤中，也有三种方式下发下行信令，分别为通过高层信令、通过物理层信令。
方式一、下行信令为高层信令
该方式下，下行信令为高层信令，基站通过高层向终端发送高层信令，该高层信令指示终端在目标时频资源上的功率差。
举例来说，可以是：
PUSCH-ConfigDelicated::＝SEQUENCE{
referencesignalPowerDifference INTEGER(-3，-2，-1，,0)；
}
方式二、下行信令为物理层信令
该方式下，下行信令为物理层信令(例如DCI信令)，基站通过物理层向终端发送DCI信令，该DCI信令指示终端在目标时频资源上的功率差。
例如，基站可以在DCI信令中配置N比特，用于指示终端在目标时频资源上的功率差，N比特可以指示2 N种功率差，以N＝2为例，可以指示4种功率差，举例来说，如表2所示：
2个比特 功率差
00 0
01 -1
10 -2
11 -3
表2
方式三、通过高层信令+物理层信令
该方式下，基站通过高层信令配置终端在目标时频资源上的功率差，并通过DCI信令将配置的目标时频资源上的功率差发送至终端，即该方式是上述方式一和方式二 的结合，配置在目标时频资源上的功率差时采用高层信令，下发时则采用DCI信令。
上述步骤403中，终端确定映射在目标时频资源上的上行信号的上行发送功率。即终端根据接收到的功率差，确定在目标时频资源上的上行信号的上行发送功率，具体实施方式可参照上述实施例一，这里不再赘述。
上述步骤404中，终端以确定的上行发送功率发送上行信号。
上述步骤405中，基站根据目标时频资源上的功率差，解析上行信号。
该步骤，基站根据目标时频资源上的功率差，解析上行信号的具体实施可参照上述实施例一中的实施，这里不再赘述。
本发明上述实施例具有如下有益效果：
根据本实施案例，协议规定或基站发送信令，终端可直接得知在RS与信道复用的符号上与其他符号的功率差，从而可以主动降低RS与信道复用的OFDM符号的功率，达到降低PAPR的目的。或者是，在RS与信道复用的符号上，不降低映射RS的RE的功率，而降低映射信道的RE的功率，以达到降低这个符号上的PAPR的目的。终端基站下发的该信令，通过查表方式得知同一种信道，在RS与信道复用和未与RS复用的符号的功率差。
该实施例二通过引入功率差，降低RS符号或RS与信道复用的符号上的RE的功率，能够适应功率受限的终端，如使用DFT-s-OFDM的终端的上行传输性能，从而保证了在功率受限的场景下，能够优化利用发射功率。
基于相同的发明构思，本发明实施例提供一种终端500，如图5所示，包括：
接收单元501，用于接收基站下发的下行信令，根据所述下行信令，确定所述终端所使用的波形；
功率差确定单元502，用于根据终端使用的波形与功率差的对应关系，确定目标时频资源对应的功率差；
发送功率确定单元503，用于根据确定的功率差，确定映射在所述目标时频资源上的上行信号的上行发送功率；
发送单元504，用于以确定的所述上行发送功率发送所述上行信号。
可选地，所述对应关系中的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述对应关系中的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
可选地，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
可选地，所述波形为CP-OFDM时对应的功率差与所述波形为DFT-s-OFDM时对应的功率差不相同。
可选地，所述下行信令由所述基站通过物理层下发；或者所述下行信令由所述基站通过高层下发。
基于相同的发明构思，本发明实施例提供一种终端600，如图6所示，包括：
接收单元601，用于接收基站下发的下行信令，所述下行信令指示终端在目标时频资源上的功率差；
发送功率确定单元602，用于根据所述下行信令，确定映射在所述目标时频资源上的上行信号的上行发送功率；
发送单元603，用于以确定的所述上行发送功率发送所述上行信号。
可选地，所述下行信令指示的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
所述下行信令指示的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
基于相同的发明构思，发明实施例提供一种基站700，如图7所示，包括：
发送单元701，用于确定终端使用的波形，并向终端发送与所述波形具有对应关系的下行信令；
接收单元702，用于接收所述终端发送的映射在目标时频资源的上行信号；
功率差确定单元703，用于根据波形与功率差的对应关系以及所述终端使用的波形，确定所述目标时频资源上的上行信号对应的功率差；
解析单元704，用于根据所述功率差解析所述上行信号。
可选地，所述下行信令为物理层信令；或者所述下行信令为高层信令。
基于相同的发明构思，本发明实施例提供一种基站800，如图8所示，包括：
发送单元801，用于向终端发送下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
接收单元802，用于接收所述终端发送的映射在目标时频资源的上行信号；
解析单元803，用于根据所述目标时频资源上的功率差，解析所述上行信号。
可选地，所述下行信令为物理层信令；或者所述下行信令为高层信令。
基于相同的发明构思，本发明实施例还提供一种上行信号的发送装置900，具体地，该发送装置900可以是终端，也可以是芯片等，如图9所示，该发送装置包括：处理器901、存储器902和收发器903；所述处理器901、所述存储器902和所述收发器903均通过总线904连接；
所述存储器902，用于存储计算机执行指令；存储器902既可以集成在处理器中，也可以独立于处理器901设置；
所述处理器901，用于执行所述存储器902存储的计算机执行指令；
所述处理器901执行所述存储器902存储的计算机执行指令，使得所述发送装置900执行本发明实施例提供的上述上行信号发送方法中由终端执行的步骤，或者使得终端部署与该步骤对应的功能单元；
所述处理器901，可以包括不同类型的处理器901，或者包括相同类型的处理器901；处理器901可以是以下的任一种：中央处理器(Central Processing Unit，简称CPU)、ARM处理器、现场可编程门阵列(Field Programmable Gate Array，简称FPGA)、专用处理器等具有计算处理能力的器件。一种可选实施方式，所述处理器901还可以集成为众核处理器。
存储器902可以是以下的任一种或任一种组合：随机存取存储器(Random Access Memory，简称RAM)、只读存储器(read only memory，简称ROM)、非易失性存储器(non-volatile memory，简称NVM)、固态硬盘(Solid State Drives，简称SSD)、机械硬盘、磁盘、磁盘整列等存储介质。
收发器903用于使发送装置900与其他设备进行数据交互；例如，该终端通过收发器903与基站进行数据交互。收发器903可以是以下的任一种或任一种组合：网络接口(例如以太网接口)、无线网卡等具有网络接入功能的器件。
该总线904可以包括地址总线、数据总线、控制总线等，为便于表示，图9用一条粗线表示该总线。总线904可以是以下的任一种或任一种组合：工业标准体系结构(Industry Standard Architecture，简称ISA)总线、外设组件互连标准(Peripheral Component Interconnect，简称PCI)总线、扩展工业标准结构(Extended Industry Standard Architecture，简称EISA)总线等有线数据传输的器件。
基于相同的发明构思，本发明实施例还提供一种基站上行信号的接收装置1000，具体地，该接收装置1000可以是基站，也可以是芯片等，如图10所示，包括：处理器1001、存储器1002和收发器1003；所述处理器1001、所述存储器1002和所述收发器1003均通过总线1004连接；
所述存储器1002，用于存储计算机执行指令；存储器1002既可以集成在处理器中，也可以独立于处理器1001设置；
所述处理器1001，用于执行所述存储器1002存储的计算机执行指令；
所述处理器1001执行所述存储器1002存储的计算机执行指令，使得所述基站1000执行本发明实施例提供的上述上行信号接收方法中由基站执行的步骤，或者使得基站部署与该步骤对应的功能单元；
所述处理器1001，可以包括不同类型的处理器1001，或者包括相同类型的处理器1001；处理器1001可以是以下的任一种：中央处理器(Central Processing Unit，简称CPU)、ARM处理器、现场可编程门阵列(Field Programmable Gate Array，简称FPGA)、专用处理器等具有计算处理能力的器件。一种可选实施方式，所述处理器1001还可以集成为众核处理器。
存储器1002可以是以下的任一种或任一种组合：随机存取存储器(Random Access Memory，简称RAM)、只读存储器(read only memory，简称ROM)、非易失性存储器(non-volatile memory，简称NVM)、固态硬盘(Solid State Drives，简称SSD)、机械硬盘、磁盘、磁盘整列等存储介质。
收发器1003用于使接收装置1000与其他设备进行数据交互；例如，该基站通过收发器1003与终端进行数据交互。收发器1003可以是以下的任一种或任一种组合：网络接口(例如以太网接口)、无线网卡等具有网络接入功能的器件。
该总线1004可以包括地址总线、数据总线、控制总线等，为便于表示，图10用一条粗线表示该总线。总线1004可以是以下的任一种或任一种组合：工业标准体系结构(Industry Standard Architecture，简称ISA)总线、外设组件互连标准(Peripheral Component Interconnect，简称PCI)总线、扩展工业标准结构(Extended Industry Standard Architecture，简称EISA)总线等有线数据传输的器件。
本发明实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令；终端或基站的处理器执行该计算机执行指令，使得终端或基站执行本发明实施例提供的上行信号发送方法中由终端或基站执行的步骤，或者使得终端或基站部署与该步骤对应的功能单元。
本发明实施例提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中。终端或基站的处理器可以从计算机可读存储介质读取该计算机执行指令；处理器执行该计算机执行指令，使得终端或基站执行本发明实施例提供的上述上行信号发送方法中由网管设备执行的步骤，或者使得网管设备部署与该步骤对应的功能单元。
本领域内的技术人员应明白，本发明实施例可提供为方法、系统、或计算机程序产品。因此，本发明实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明实施例是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (25)

  1. 一种上行信号的功率控制方法，其特征在于，包括：
    终端接收基站下发的下行信令，根据所述下行信令，确定所述终端所使用的波形；
    所述终端根据终端使用的波形与功率差的对应关系，确定目标时频资源对应的功率差；
    所述终端根据确定的功率差，确定映射在所述目标时频资源上的上行信号的上行发送功率，并以所述上行发送功率发送所述上行信号。
  2. 根据权利要求1所述的方法，其特征在于，所述对应关系中的功率差表示第一符号与第二符号的功率差，所述第一符号为参考信号RS与信道复用的正交频分复用OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
    所述对应关系中的功率差表示第一符号中的第一资源元素RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
  3. 根据权利要求2所述的方法，其特征在于，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
  4. 根据权利要求1至3任一所述的方法，其特征在于，所述波形为循环前缀正交频分复用CP-OFDM时对应的功率差与所述波形为基于离散傅里叶变换扩展的正交频分复用DFT-s-OFDM时对应的功率差不相同。
  5. 根据权利要求1至4任一所述的方法，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  6. 一种上行信号发送方法，其特征在于，包括：
    终端接收基站下发的下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
    所述终端根据所述下行信令，确定映射在所述目标时频资源上的上行信号的上行发送功率，并以所述上行发送功率发送所述上行信号。
  7. 根据权利要求6所述的方法，其特征在于，所述下行信令指示的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
    所述下行信令指示的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
  8. 一种上行信号接收方法，其特征在于，包括：
    基站确定终端使用的波形，并向终端发送与所述波形具有对应关系的下行信令；
    所述基站接收所述终端发送的映射在目标时频资源的上行信号；
    所述基站根据波形与功率差的对应关系以及所述终端使用的波形，确定所述目标时频资源上的上行信号对应的功率差，并根据所述功率差解析所述上行信号。
  9. 根据权利要求8所述的方法，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  10. 一种上行信号接收方法，其特征在于，包括：
    基站向终端发送下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；
    所述基站接收所述终端发送的映射在目标时频资源的上行信号；
    所述基站根据所述目标时频资源上的功率差，解析所述上行信号。
  11. 根据权利要求10所述的方法，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  12. 一种终端，其特征在于，包括：
    收发器，用于接收基站下发的下行信令；以及以处理器确定的上行发送功率发送上行信号；
    处理器，用于根据所述下行信令，确定终端所使用的波形；根据终端使用的波形与功率差的对应关系，确定目标时频资源对应的功率差；根据确定的功率差，确定映射在所述目标时频资源上的上行信号的所述上行发送功率。
  13. 根据权利要求12所述的终端，其特征在于，所述对应关系中的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
    所述对应关系中的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
  14. 根据权利要求13所述的终端，其特征在于，所述RS为用于解调的参考信号或用于信道探测的参考信号；所述信道为上行数据信道或上行控制信道或随机接入信道。
  15. 根据权利要求12至14任一所述的终端，其特征在于，所述波形为CP-OFDM时对应的功率差与所述波形为DFT-s-OFDM时对应的功率差不相同。
  16. 根据权利要求12至15任一所述的终端，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  17. 一种终端，其特征在于，包括：
    收发器，用于接收基站下发的下行信令，所述下行信令指示终端在目标时频资源上的功率差；以及以处理器确定的上行发送功率发送上行信号；
    处理器，用于根据所述下行信令，确定映射在所述目标时频资源上的上行信号的所述上行发送功率。
  18. 根据权利要求17所述的终端，其特征在于，所述下行信令指示的功率差表示第一符号与第二符号的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号；或者
    所述下行信令指示的功率差表示第一符号中的第一RE与第二符号中的第二RE的功率差，所述第一符号为RS与信道复用的OFDM符号，所述第二符号为未与RS复用的OFDM符号，所述第一RE为用于映射信道的RE，所述第二RE为用于映射信道的RE。
  19. 一种基站，其特征在于，包括：
    处理器，用于确定终端使用的波形；以及用于根据波形与功率差的对应关系以及所述终端使用的波形，确定目标时频资源上的上行信号对应的功率差；并根据所述功率差解析所述上行信号
    收发器，用于向所述终端发送与所述波形具有对应关系的下行信令；以及
    用于接收所述终端发送的映射在所述目标时频资源的上行信号。
  20. 根据权利要求19所述的基站，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  21. 一种基站，其特征在于，包括：
    收发器，用于向终端发送下行信令，所述下行信令指示所述终端在目标时频资源上的功率差；以及用于接收所述终端发送的映射在目标时频资源的上行信号；
    处理器，用于根据所述目标时频资源上的功率差，解析所述上行信号。
  22. 根据权利要求21所述的基站，其特征在于，
    所述下行信令为物理层信令；或者
    所述下行信令为高层信令。
  23. 一种通信装置，其特征在于，用于执行如权利要求1至11中任一项所述的方法。
  24. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合；
    存储器，用于存储计算机程序；
    处理器，用于执行所述存储器中存储的计算机程序，以使得所述装置执行如权利要求1至11中任一项所述的方法。
  25. 一种可读存储介质，包括程序或指令，当所述程序或指令在计算机上运行时，如权利要求1至11中任意一项所述的方法被执行。
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