WO2021081902A1 - 一种信号发送方法、信号接收方法及装置 - Google Patents

一种信号发送方法、信号接收方法及装置 Download PDF

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Publication number
WO2021081902A1
WO2021081902A1 PCT/CN2019/114758 CN2019114758W WO2021081902A1 WO 2021081902 A1 WO2021081902 A1 WO 2021081902A1 CN 2019114758 W CN2019114758 W CN 2019114758W WO 2021081902 A1 WO2021081902 A1 WO 2021081902A1
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Prior art keywords
symbol
data
modulation data
symbols
sent
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PCT/CN2019/114758
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English (en)
French (fr)
Inventor
胡远洲
汪凡
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980101711.9A priority Critical patent/CN114631292B/zh
Priority to PCT/CN2019/114758 priority patent/WO2021081902A1/zh
Priority to EP19950963.9A priority patent/EP4033709A4/en
Publication of WO2021081902A1 publication Critical patent/WO2021081902A1/zh
Priority to US17/733,798 priority patent/US20220329379A1/en

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    • 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
    • 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
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/26412—Filtering over the entire frequency band, e.g. filtered orthogonal frequency-division multiplexing [OFDM]
    • 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
    • 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels

Definitions

  • This application relates to the field of communication technology, and in particular to a signal sending method, signal receiving method and device.
  • time-domain filtering can be used for time-domain signals, and time-domain filtering can be a polyphase network, and the length of the filter exceeds one symbol.
  • a reference signal (reference signal) is also sent.
  • the reference signal is used for channel estimation, and the obtained channel response can be used to assist in demodulating the received data.
  • the filtered data of one symbol obtained by using a polyphase network to implement time-domain filtering is mixed with time-domain signals of several symbols. In this case, the symbol where the reference signal is located will be interfered by several adjacent symbols, which will affect the performance of channel estimation and thus the demodulation performance.
  • the embodiments of the present application provide a signal sending method, a signal receiving method, and a device to solve the problem that affects channel estimation performance.
  • the embodiments of the present application provide a signal sending method, which can be executed by a terminal device, can also be executed by a component of the terminal device (such as a processor, a chip, or a chip system, etc.), or can be executed by a network device It can also be executed by a component of a network device (for example, a processor, a chip, or a chip system, etc.).
  • the execution subject is the terminal device as an example for description.
  • the terminal device sends the reference signal to the network device on the first symbol, and sends the first modulation data to the network device on the second symbol, and sends the second modulation data to the network device on the third symbol; wherein, the second symbol The symbol and the third symbol are respectively adjacent to the first symbol, and the second symbol is different from the third symbol, the sum of the first modulation data and the second modulation data is 0, or The first modulation data and the second modulation data are the same.
  • the sum of the adjacent modulation data before and after the symbol of the reference signal is zero (or inverted each other) or the same, so that the reference signal after time domain filtering is prevented from being interfered by adjacent modulation data. Ensure channel estimation performance.
  • the reference signal on the first symbol is used to demodulate the first modulation data and the second modulation data.
  • the channel is estimated by the reference signal, thereby demodulating more accurate data from the first modulated data and the second modulated data.
  • the reference signal, the first modulation data, and the second modulation data sent on the first symbol may be processed by using a binary phase shift keying BPSK or Pi/2-BPSK modulation method. of.
  • the reference signal on the first symbol, the first modulation data, and the second modulation data are sent after filtering processing.
  • it may be sent after performing frequency domain resource mapping, inverse Fourier transform, and time domain filtering.
  • At least two reference signals can be sent in one time slot, which can ensure the performance of the demodulated data of the terminal device in a high-speed mobile scenario.
  • the at least two reference signals may be continuous in the time domain or discontinuous in the time domain.
  • first modulation data and the second modulation data are the same, two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are used to carry the reference signal.
  • the reference signals respectively carried on the first symbol are the same. Continuously sending two reference signals can ensure the performance of the terminal equipment in high-speed mobile scenarios, and the two reference signals are the same, and the adjacent modulation data before and after the symbol of the reference signal in the time domain are also the same, ensuring that the reference signals will not generate each other Interference, and reduce the interference of modulation data on the reference signal.
  • the sum of the first modulation data and the second modulation data is 0, and the method further includes: sending the third modulation data on the fourth symbol, and sending the third modulation data on the fifth symbol.
  • Send fourth modulation data where the fourth symbol is adjacent to the second symbol in the time domain, and the fifth symbol is adjacent to the third symbol in the time domain; the third modulation data is adjacent to the third symbol in the time domain;
  • the sum of the fourth modulation data is zero.
  • the first modulation data and the second modulation data are the same, and the method further includes: sending third modulation data on a fourth symbol, and sending fourth modulation data on a fifth symbol.
  • Modulation data, the fourth symbol is adjacent to the second symbol in the time domain, and the fifth symbol is adjacent to the third symbol in the time domain; the third modulation data and the fourth modulation The data is the same.
  • the multiple adjacent modulation data before and after the symbol of the reference signal are the same in the time domain, so that the reference signal after the time domain filtering is prevented from being interfered by the adjacent multiple modulation data, and the channel estimation performance is further ensured.
  • the first symbol, the second symbol, and the third symbol are included in a resource unit RU, and the number of symbols included in the RU is equal to the number of repetitions of data on the RU.
  • the data on the RU includes the first modulation data and the second modulation data.
  • the number of data transmissions on the RU is K, and the number of symbols included in the RU
  • the number of symbols contained in one RU is
  • the number of times the data on the configured RU is sent is greater than 1, and is an even number of times, that is, K>1, and K is an even number, and the number of symbols contained in an RU is
  • the embodiment of this application when the method for sending reference signals and modulated data provided in the embodiment of this application is used and when the number of transmissions configured is K when the method provided in the embodiment of this application is not used, the embodiment of this application is not used.
  • the number of symbols on an RU is always the same when the number of transmissions changes.
  • the configured number of transmissions K 1, then the number of symbols contained in one RU is In actual sending, the data on the RU is sent once.
  • the number of symbols contained in one RU is K/f(K).
  • K the number of data transmissions on the RU is K/f(K).
  • different configuration schemes can be used for the configured transmission times when the method for transmitting reference signals and modulated data provided in the embodiment of the present application is used and when the method provided by the embodiment of the present application is not used.
  • the configured number of transmissions is K
  • the number of symbols on one RU is The actual number of transmissions.
  • the configured number of transmissions is K′
  • the embodiments of the present application provide a signal receiving method, which can be executed by a terminal device, can also be executed by a component of the terminal device (such as a processor, a chip, or a chip system, etc.), or can be executed by a network device It can also be executed by a component of a network device (for example, a processor, a chip, or a chip system, etc.).
  • a component of the terminal device such as a processor, a chip, or a chip system, etc.
  • a network device for example, a processor, a chip, or a chip system, etc.
  • the network device receives the reference signal on the first symbol; and receives the first modulation data on the second symbol, and receives the second modulation data on the third symbol; wherein the second symbol and the third symbol are in time Respectively adjacent to the first symbol in the domain, and the second symbol is different from the third symbol, the sum of the first modulation data and the second modulation data is 0, or the first modulation The data is the same as the second modulation data.
  • the reference signal on the first symbol is used to demodulate the first modulation data and the second modulation data.
  • the reference signal, the first modulation data, and the second modulation data sent on the first symbol may be processed by using a binary phase shift keying BPSK or Pi/2-BPSK modulation method. of.
  • the reference signal on the first symbol, the first modulation data, and the second modulation data are obtained after filtering processing.
  • it may be obtained after performing frequency domain resource mapping, inverse Fourier transform, and time domain filtering processing on the received data (including the modulated data and the reference signal).
  • first modulation data and the second modulation data are the same, two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are used to carry the reference signal.
  • the reference signals respectively carried on the first symbol are the same.
  • the sum of the first modulation data and the second modulation data is 0, and the method further includes: the network device receives the third modulation data on the fourth symbol, and Receiving fourth modulation data on the symbol, the fourth symbol is adjacent to the second symbol in the time domain, the fifth symbol is adjacent to the third symbol in the time domain, and the third modulation data The sum of the fourth modulation data is zero.
  • the first modulation data and the second modulation data are the same, and the method further includes: the network device receives the third modulation data on the fourth symbol, and receiving on the fifth symbol Fourth modulation data, where the fourth symbol is adjacent to the second symbol in the time domain, and the third modulation data is the same as the fourth modulation data.
  • the first symbol, the second symbol, and the third symbol are included in a resource unit RU, and the number of symbols included in the RU is equal to the number of repetitions of data on the RU.
  • the data on the RU includes the first modulation data and the second modulation data.
  • the network device demodulates the first modulation data and the second modulation data according to the reference signal on the first symbol.
  • an embodiment of the present application provides a device that can implement the foregoing first aspect or any one of the possible implementation methods of the first aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • an embodiment of the present application provides a device that can implement the foregoing second aspect or any one of the possible implementation methods of the second aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • an embodiment of the present application provides a device, including a processor, the processor is coupled with a memory, and the memory is used to store a program or instruction, and when the program or instruction is executed by the processor, The device is enabled to implement the method described in the foregoing first aspect or any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a device, including a processor, the processor is coupled with a memory, and the memory is used to store a program or instruction, and when the program or instruction is executed by the processor, The device is enabled to implement the foregoing second aspect or the method described in any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction When the computer program or instruction is executed, the computer executes the first aspect or any one of the first aspects. The method described in the implementation mode.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer executes the second aspect or any one of the second aspects described above. The method described in the implementation mode.
  • an embodiment of the present application provides a computer program product, which includes computer program code that, when run on a computer, causes the computer to execute the above-mentioned first aspect or any possible implementation of the first aspect The method described in the method.
  • an embodiment of the present application provides a computer program product, which includes computer program code, which, when run on a computer, causes the computer to execute the above-mentioned second aspect or any possible implementation of the second aspect The method described in the method.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip implements the method described in the first aspect or any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip implements the method described in the second aspect or any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a communication system, including: the device described in the third aspect, and/or the device described in the fourth aspect.
  • an embodiment of the present application provides a communication system, including: the device described in the fifth aspect, and/or the device described in the sixth aspect.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of data processing of a single tone waveform provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of symbols where modulation data and reference signals provided by an embodiment of the application are located;
  • FIG. 4 is a schematic flowchart of a signal transmission method provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of symbols where modulation data and reference signals of Example 1 are provided in an embodiment of the application;
  • FIG. 6 is a schematic diagram of symbols where another modulation data and reference signal of Example 1 provided by an embodiment of the application are located;
  • FIG. 7 is a schematic diagram of symbols where modulation data and reference signals of Example 2 provided by an embodiment of the application are located;
  • FIG. 8 is a schematic diagram of symbols where another modulation data and a reference signal of Example 2 provided by an embodiment of the application are located;
  • FIG. 9 is a schematic diagram of symbols where modulation data and reference signals of Example 3 provided by an embodiment of the application are located;
  • FIG. 10 is a schematic diagram of symbols where another modulation data and reference signal of Example 3 provided by an embodiment of the application are located;
  • FIG. 11 is a schematic diagram of symbols where modulation data and reference signals of Example 4 are provided in an embodiment of this application;
  • FIG. 12 is a schematic diagram of symbols where modulation data and reference signals of Example 5 are provided in an embodiment of this application;
  • FIG. 13 is a schematic diagram of symbols where another modulation data and reference signal of Example 5 are provided in an embodiment of the application;
  • FIG. 14 is a schematic diagram of symbols where still another modulation data and reference signal of Example 5 are provided in an embodiment of this application;
  • Example 15 is a schematic diagram of symbols where modulation data and reference signals of Example 6 are provided in an embodiment of this application;
  • FIG. 16 is a schematic structural diagram of an apparatus 1600 provided by an embodiment of this application.
  • FIG. 17 is a schematic diagram of an apparatus 1700 provided by an embodiment of the application.
  • FIG. 18 is a schematic diagram of an apparatus 1800 provided by an embodiment of the application.
  • FIG. 1 is a schematic diagram of the architecture of a communication system applied in an embodiment of the present application.
  • the communication system includes network equipment and terminal equipment (terminal equipment 1-terminal equipment 6 in Figure 1).
  • the terminal device is connected to the network device in a wireless manner.
  • the terminal device can be a fixed location, or it can be movable.
  • FIG. 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as core network equipment, wireless relay equipment, and wireless backhaul equipment not shown in FIG. One or more.
  • the embodiment of the present application does not limit the number of network devices and terminal devices included in the communication system.
  • the technology described in the embodiments of this application can be used in various communication systems, such as the fourth generation (4G) communication system, 4.5G communication system, 5G communication system, a system that integrates multiple communication systems, or a communication system that will evolve in the future .
  • 4G fourth generation
  • 4.5G communication system 5G communication system
  • 5G communication system a system that integrates multiple communication systems
  • 3GPP 3rd generation partnership project
  • the network device can be any device with a wireless transceiver function. Including but not limited to: evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional NodeB), base station in NR (gNodeB or gNB) or transmission receiving point/transmission reception point (TRP), 3GPP Subsequent evolution of base stations, access nodes in the WiFi system, wireless relay nodes, wireless backhaul nodes, etc.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support the networks of the same technology mentioned above, and they can also support the networks of different technologies mentioned above.
  • the base station can contain one or more co-site or non-co-site TRPs.
  • the network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the network device can also be a server, a wearable device, a machine communication device, or a vehicle-mounted device, etc.
  • the following description takes the network device as a base station as an example.
  • the multiple network devices may be base stations of the same type, or base stations of different types.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the terminal device can communicate with multiple base stations of different technologies.
  • the terminal device can communicate with a base station that supports an LTE network, can also communicate with a base station that supports a 5G network, and can also support communication with a base station of an LTE network and a base station of a 5G network Double connection.
  • a terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, airplanes, etc.). Balloons and satellites are classy).
  • the terminal equipment may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Terminal equipment in industrial control), vehicle-mounted terminal equipment, terminal equipment in self-driving (self-driving), terminal equipment in assisted driving, terminal equipment in remote medical (remote medical), smart grid (smart grid) Terminal equipment, terminal equipment in transportation safety, terminal equipment in smart city, terminal equipment in smart home, etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control Terminal equipment in industrial control
  • vehicle-mounted terminal equipment terminal equipment in self-driving (self-driving)
  • terminal equipment in assisted driving terminal equipment in remote medical (remote medical)
  • smart grid smart grid
  • Terminal equipment can sometimes also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile Equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc.
  • the terminal equipment can be fixed or mobile.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • Network equipment and terminal equipment can communicate through licensed spectrum, or communicate through unlicensed spectrum, or communicate through licensed spectrum and unlicensed spectrum at the same time.
  • Network equipment and terminal equipment can communicate through a frequency spectrum below 6 GHz (gigahertz, GHz), communicate through a frequency spectrum above 6 GHz, and communicate using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • the terminal device may be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • the terminal device in this application may be a terminal device in machine type communication (MTC).
  • MTC machine type communication
  • the terminal device of the present application may be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit that is built into a vehicle as one or more components or units. The vehicle passes through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted Components, on-board chips or on-board units can implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), and vehicle to vehicle (V2V). Wait.
  • V2X vehicle to everything
  • LTE-V long term evolution vehicle
  • V2V vehicle to vehicle
  • the symbol refers to the time domain symbol.
  • the time domain symbol here can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform spread spectrum OFDM. (Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • DFT-s-OFDM discrete Fourier transform spread spectrum OFDM.
  • NCP normal cyclic prefix
  • one slot may include 14 symbols; when the symbols use an extended cyclic prefix (extended cyclic prefix, ECP), one slot may include 12 symbols.
  • one slot includes 14 symbols as an example.
  • a slot may also include other numbers of symbols, for example, a slot includes 16 symbols, which is not limited in this application.
  • the Single tone waveform maps a modulated data to a sub-carrier, and then undergoes an inverse Fourier transform to generate a time-domain signal of one symbol.
  • the modulation data can be binary phase shift keying (BPSK) modulation data for Pi/2 phase rotation, where the phase factor of the Pi/2 phase rotation is determined by the index l of the symbol, for example, the phase factor is
  • BPSK modulated data is obtained by BPSK modulation of the bits to be sent.
  • a time domain filter may be used to perform time domain filtering on the time domain signal on the symbol, for example, as shown in FIG. 2.
  • the time-domain filtering can use a commonly used linear convolution (linear convolution).
  • the duration of the time-domain filter is generally less than the duration of one symbol.
  • Time-domain filtering can also be implemented by using a polyphase network (PPN). In this case, the duration of the time-domain filter exceeds the duration of one symbol.
  • PPN polyphase network
  • the filtered data of one symbol obtained by using the polyphase network to implement time domain filtering is a mixture of time domain signals of several symbols.
  • a reference signal (reference signal) is also sent, and the reference signal may also be called a pilot signal.
  • the reference signal sent together with the modulated data is a signal known by both the terminal device and the network device, and is mainly used to assist the receiving end in data demodulation, so it can also be called a demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • the symbol sends a reference signal.
  • the reference signal and the modulated data are located on different symbols, and the frequency domain can occupy the same bandwidth (that is, the same subcarrier position).
  • the symbols that carry modulated data are referred to as data symbols, and the symbols that carry reference signals are referred to as reference signal symbols.
  • the terminal equipment sends data and reference signals.
  • the network equipment uses the known reference signals to perform channel estimation and interpolation operations to estimate the channel response of the symbol where the data is located. (channel response), and then use the received data and its estimated channel response to perform equalization, demodulation and other operations to demodulate the sent data.
  • the reference signal and the modulation data generated from the data to be sent are generally time-division, that is, the symbol where the reference signal is located is different from the symbol where the modulation data generated from the data to be transmitted is located.
  • a time slot containing 14 symbols is taken as an example.
  • the symbol index in the time slot ranges from 0 to 13, where the reference signal is sent in the reference signal symbol, and the modulation data generated from the data to be sent is sent in the data symbol.
  • Symbols 3 and 10 in Figure 3 are reference signal symbols, and the other symbols are data symbols.
  • the duration of the coefficient of the time domain filter (referred to as C(t)) is 3 ⁇ T, and the duration of one symbol is T.
  • C(t) the duration of the coefficient of the time domain filter
  • T the duration of one symbol
  • the embodiments of the present application provide a method and device for signal transmission and signal reception, which are used to solve the problem that the symbol of the reference signal receives interference from several adjacent symbols, which affects the demodulation performance.
  • the method of the present application can be applied to a sending device and also can be applied to a receiving device.
  • the sending device may be a terminal device, and the receiving device may be a network device.
  • terminal equipment 1 to terminal equipment 6 can use the solution provided in the embodiments of this application to send data and reference signals to network equipment, and the network equipment needs to receive data sent by terminal equipment 1 to terminal equipment 6.
  • the sending device can also be a network device, and the receiving device can be a terminal device.
  • the network device can use the solution provided by the embodiments of this application to send data and reference signals to the terminal device 1 to the terminal device 6, and the terminal device 1 to the terminal device 6 need to receive the data sent by the network device. And reference signal.
  • the following describes the method provided in the embodiment of the present application by taking the sending device as the terminal device and the receiving device as the network device as an example.
  • the method includes steps S401 and S402.
  • the terminal device sends a reference signal to the network device on consecutive L rs symbols, where L rs is a positive integer, and the start symbol index of the L rs symbols is l s . Therefore, the network device receives the reference signal on consecutive L rs symbols.
  • the terminal device sends modulated data to the network device on the symbol l s -i and the symbol l s +L rs -1+i respectively.
  • i is a positive integer less than or equal to L data
  • L data is a positive integer. Therefore, the network device receives the modulated data on the symbol l s -i and the symbol l s +L rs -1+i, respectively.
  • the modulation data on the symbol l s -i and the modulation data on the symbol l s +L rs -1+i are obtained based on the same modulation data.
  • the data length of the modulated data on the symbol l s -i and the data length of the modulated data on the symbol l s +L rs -1+i are the same as the data length of the same modulated data.
  • the modulated data on the symbol l s -1 and the modulated data on the symbol l s + L rs are both modulated data A, or obtained from the transformation of A, for example, the modulated data on the symbol l s -1 and the symbol l s
  • the sum of modulated data on +L rs is 0, for example, the modulated data on symbol l s -1 is A, the modulated data on symbol l s +L rs is -A, or the modulated data on symbol l s -1 is -A, the modulated data on the symbol l s +L rs is A.
  • the symbol for transmitting the reference signal is called the first symbol, and two different symbols (symbol l s -i and symbol l s + L rs -1+i) are called the second symbol and the third symbol, respectively.
  • the terminal device sends the reference signal on the first symbol; sends the first modulated data on the second symbol, and sends the second modulated data on the third symbol; wherein the sum of the first modulated data and the second modulated data Is 0, or the first modulation data and the second modulation data are the same.
  • the network device receives the reference signal on the first symbol, the network device receives the first modulation data on the second symbol, and receives the second modulation data on the third symbol.
  • the index of the symbol may also be referred to as the serial number or identification of the symbol.
  • l s -i and l s +L rs -1+i are the indexes of the symbols.
  • the symbol l s -i to the symbol l s +L rs -1+i may be L rs +2i symbols among the symbols used for data (including modulation data and reference signals) transmission by the terminal device.
  • the index of the symbol can be greater than or equal to 0, and can also be equal to 0.
  • a slot can include 14 symbols.
  • the indexes of the 14 symbols are from 0 to 13.
  • the 14 symbols are respectively: symbol 0, symbol 1, ..., symbol 13.
  • the symbol l s -i is the first symbol among the 14 symbols, and the symbol l s -i can be the symbol 0.
  • the indexes of the 14 symbols are from 1 to 14.
  • the 14 symbols are: symbol 1, symbol 2, ..., symbol 14.
  • the indexes of the 14 symbols are from -2 to 11.
  • the 14 symbols are: symbol -2, symbol -1, symbol 0, ..., symbol 11.
  • the symbol l s -i is the second symbol among the 14 symbols, and the symbol l s -i can be the symbol -1.
  • the symbol l s -i to the symbol l s +L rs -1+i can also be symbols contained in multiple time slots or multiple subframes (subframes), with indexes from l s -i to l s +L rs -1+i It is the index of the symbols in the multiple time slots or multiple subframes, that is, the symbol l s -i to the symbol l s +L rs -1+i may span multiple time slots or multiple subframes.
  • the modulation data or reference symbols sent on the symbols in the embodiments of the present application can be obtained in the following manner: a bit stream including one or more bits is modulated by a certain modulation method to obtain one or more complex symbols. One or more complex symbols are mapped to one or more time-domain symbols one-to-one.
  • the above-mentioned bit stream can be obtained by various processing methods, for example, the original bit stream can be processed by encoding, interleaving, scrambling, etc., to obtain the bit stream.
  • the original bit stream can be obtained according to the service to be sent by the terminal device, which is not limited in the embodiment of the present application.
  • the modulation mode in the embodiment of the present application may be BPSK modulation or Pi/2-BPSK modulation.
  • the data mapped onto the subcarrier after BPSK modulation may be called BPSK modulated data
  • the data mapped on the subcarrier after Pi/2-BPSK modulation may be called Pi/2-BPSK modulated data.
  • the following description takes BPSK modulated data as an example.
  • the modulated data or reference signal is filtered before sending.
  • the filtering may be time-domain filtering. Specifically, frequency domain resource mapping, inverse Fourier transform, and time domain filtering may be performed on the reference signal or modulation data before being sent.
  • the terminal device may determine whether to use the solution provided in the embodiment of the present application to send data and reference signals by receiving signaling from the network device. For example, one or more bits included in the signaling are used to indicate whether to use the scheme provided in the embodiment of the present application to send data and reference signals. Taking 1 bit as an example, for example, when the value on the 1 bit is 1, the terminal device can use the solution provided in the embodiment of the present application to send data and reference signals. When the value on the 1 bit is 0, the terminal device does not use the solution provided in the embodiment of the present application to send data and reference signals.
  • the data and the reference signal are sent in a non-repeated mapping manner, that is , the modulation data on the symbol l s -1 and the modulation data on the symbol l s +L rs are irrelevant.
  • the terminal device can use the solution provided in the embodiment of the present application to send data and reference signals.
  • the terminal device does not use the scheme provided in the embodiment of the present application to send data and reference data.
  • the network device may send signaling to indicate whether the terminal device adopts the solution provided in the embodiment of the present application to receive data and reference signals. It should be understood that when the terminal device is used as the receiving end, the network device may not send signaling instructions. When the terminal device determines that the modulation data on the two symbols are the same through analysis, one of them may be discarded. When the sum of modulated data is 0, one of them can also be discarded.
  • the signaling may be semi-static signaling and/or dynamic signaling.
  • the semi-static signaling may be radio resource control (RRC) signaling, broadcast message, system message, or medium access control (MAC) control element (CE).
  • the broadcast message may include remaining minimum system information (RMSI).
  • the dynamic signaling may be physical layer signaling.
  • the physical layer signaling may be the signaling carried by the physical control channel or the signaling carried by the physical data channel.
  • the physical data channel may be a downlink channel, such as a physical downlink shared channel (PDSCH).
  • the physical control channel can be a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (EPDCCH), a narrowband physical downlink control channel (NPDCCH), or a machine type.
  • Communication physical downlink control channel (machine type communication (MTC) physical downlink control channel, MPDCCH).
  • MTC machine type communication
  • MPDCCH Physical downlink control channel
  • DCI downlink control information
  • the physical control channel may also be a physical sidelink control channel (physical sidelink control channel), and the signaling carried by the physical sidelink control channel may also be called sidelink control information (SCI).
  • SCI sidelink control information
  • the symbol used to transmit the reference signal is called the first symbol, that is, the index of the first symbol may be l s .
  • the two symbols adjacent to the first symbol are the second symbol and the third symbol.
  • the second symbol is different from the third symbol.
  • the second symbol is earlier than the third symbol in the time domain, that is, the index of the second symbol is l s -1
  • the index of the third symbol is l s +1
  • the second symbol can be later than the third symbol in the time domain, that is, the index of the second symbol is l s +1
  • the index of the third symbol is l s -1.
  • the second symbol is earlier than the third symbol in the time domain as an example.
  • the modulated data sent on the second symbol is referred to as first modulated data
  • the modulated data sent on the third symbol is referred to as second modulated data. Therefore, the terminal device sends the reference signal to the network device on the first symbol, sends the first modulation data to the network device on the second symbol, and sends the second modulation data to the network device on the third symbol. Further, the network device receives the reference signal on the first symbol, the network device receives the first modulation data on the second symbol, and receives the second modulation data on the third symbol. For example, the sum of the first modulation data and the second modulation data is 0, or the first modulation data and the second modulation data are the same.
  • the first modulated data sent on the symbol l s -1 is represented as d left , and the data length of d left is 1.
  • the second modulation data sent on the symbol l s +1 is denoted as d right , and the data length of d right is 1.
  • both the first modulation data and the second modulation data can be determined based on the same modulation data d 1st.
  • a time slot including 14 symbols is taken as an example, and the symbol index is 0-13.
  • symbol 3 and symbol 10 send reference signals, and both symbol 3 and symbol 10 can be called reference signal symbols.
  • Symbols 2 and 4 can be called data symbols.
  • the first modulation data and the second modulation data may be determined according to the modulation data in the first modulation number set D 1st .
  • the first modulation data and the second modulation data are determined based on d 2
  • l s 10
  • the terminal device also sends modulated data on symbols 0, 1, 5, 6, 7, 8, 12, and 13.
  • the second modulated data sent on symbol 0 is d 0
  • the second modulated data sent on symbols 1 , 5 , 6 , 7, 8, 12, 13 are d 1, d 3, d 4, d 5, and d 6 , d 8 , d 9 .
  • the first modulation data set and the second modulation data set may be included in the original modulation data set.
  • the original modulation data can be divided into a first modulation data set and a second modulation data set.
  • the original modulation data set is [d 0 , d 1 , d 2 , d 3 , d 4 , d 5 , d 6 , d 7 , d 8 , d 9 ].
  • the symbols carrying [d 0 , d 1 , d 2 , d 3 , d 4 , d 5 , d 6 , d 7 , d 8 , d 9 ] can also be called data symbols.
  • the original modulation data set can be obtained by modulating the bits to be sent.
  • a time slot including 14 symbols is taken as an example.
  • the number of symbols included in a time slot may also be other values.
  • a time slot may include 15 symbols.
  • FIG. 5 or FIG. 6 uses two symbols in a time slot to send a reference signal as an example.
  • one symbol in a time slot can also be used to send the reference signal, or multiple symbols in a time slot.
  • Send to the reference signal for example 3.
  • Example 2 taking L rs as 2 and L data as 1, as an example, two consecutive first symbols transmit the reference signal, and the indexes of the two first symbols carrying the reference signal are l s and l s +1.
  • the first modulated data is sent on the symbol l s -1 and the second modulated data is sent on the symbol l s +2.
  • the modulated data sent on the symbol l s -1 and the symbol l s +2 are obtained from the same modulated data.
  • Each modulation data includes 1 BPSK modulation data
  • the reference signal includes 1 BPSK modulation data.
  • the sum of the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 is 0, the first modulation data sent on the symbol l s -1 and the first modulated data sent on the symbol l s +2
  • the sum of the second modulation data is zero. That is to say, the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 are opposite to each other, and the modulated data sent on the symbol l s -1 and the modulated data sent on the symbol l s +2 are mutually opposite. Is the reverse.
  • the reference signal sent on the symbol l s is represented as r rs1
  • the reference signal sent on l s +1 is represented as r rs2
  • the modulated data sent on the symbol l s -1 is represented as d left
  • the symbol l s +2 The transmitted modulation data is denoted as d right .
  • the data length of r rs1 , r rs2 , d left , and d right are all 1.
  • the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 are opposite to each other
  • one time slot contains 14 symbols, and the symbol index ranges from 0 to 13.
  • the terminal device also sends modulated data on symbols 0, 1, 2, 3, 4, 9, 10, 11, 12, and 13.
  • D 1st [d 5 ]
  • D 2st [d 0 ,d 1 ,d 2 ,d 3 ,d 4 ,d 6 ,d 7 ,d 8 ,d 9 ,d 10 ].
  • the modulation data is the same.
  • a time slot contains 14 symbols, and the symbol index ranges from 0 to 13.
  • the terminal device also sends modulated data on symbols 0 , 1 , 2 , 3 , 4 , 9, 10, 11, 12, and 13 respectively [d 0, d 1, d 2, d 3, d 4 ,d 6 ,d 7 ,d 8 ,d 9 ,d 10 ].
  • Example 3 Taking L rs as 1, and L data >1 as an example, the first symbol sends a reference signal, and the index of the first symbol carrying the reference signal is l s .
  • L data 2 as an example, the first modulated data is sent on the second symbol (symbol l s -1) and the second modulated data is sent on the third symbol (symbol l s +1). s -2) The third modulated data is sent and the fourth modulated data is sent on the fifth symbol (symbol l s +2).
  • the first modulated data sent on the symbol l s -1 and the second modulated data sent on the symbol l s +1 are obtained from the same modulation data, and the third modulated data sent on the symbol l s -2 and the symbol l s +2
  • the fourth modulated data sent on the upper side is obtained from the same modulated data.
  • Each modulation data includes 1 BPSK modulation data
  • the reference signal includes 1 BPSK modulation data.
  • the sum of the first modulated data sent on the symbol l s -1 and the second modulated data sent on the symbol l s +1 is 0, and the third modulated data sent on the symbol l s -2 and the symbol l s
  • the sum of the fourth modulated data sent on +2 is 0.
  • a time slot contains 14 symbols, and the symbol index is from 0 to 13 as an example.
  • symbols 3 and 10 send reference signals, and other symbols send modulated data.
  • the sum of the first modulated data sent on symbol 2 (ie d 2 ) and the second modulated data sent on symbol 4 (ie -d 2) is 0 .
  • the sum of the third modulated data (ie d 1 ) sent on symbol 1 and the fourth modulated data (ie -d 1) sent on symbol 5 is zero.
  • the sum of the modulated data sent on symbol 9 (ie d 6 ) and the modulated data sent on symbol 11 (ie -d 6 ) is 0, and on symbol 8
  • the sum of the transmitted modulated data (i.e. d 5 ) and the modulated data transmitted on the symbol 12 (i.e. -d 5) is zero.
  • the sum of the first modulated data sent on the symbol l s -1 and the second modulated data sent on the symbol l s +1 is 0, and the third modulated data sent on the symbol l s -2 and the second modulated data sent on the symbol l s +2 are sent.
  • the sum of the modulation data of four is 0, another possible way is shown in Figure 10. Take, for example, that there are 14 symbols in a time slot, and the symbol index ranges from 0 to 13.
  • Symbols 3 and 10 send reference signals, and other symbols send modulated data.
  • the first modulation number sent on symbol 2 is d 2
  • the second modulation data sent on symbol 4 is -d 2 .
  • the third modulated data sent on symbol 1 is -d 1
  • the fourth modulated data sent on symbol 5 is d 1
  • the modulated data sent on symbol 9 is d 6
  • the modulated data sent on symbol 11 is -d 6
  • the modulated data sent on symbol 8 is -d 5
  • the modulated data sent on symbol 12 is d 5 .
  • the modulated data sent on the symbol l s -2 and the modulated data sent on the symbol l s +2 are obtained based on the same modulated data.
  • the modulated data sent on the symbol l s -3 and the modulated data sent on the symbol l s +3 are obtained based on the same modulation data. For example, referring to FIG.
  • a slot contains 14 symbols, and the symbol index ranges from 0 to 13.
  • symbols 3 and 10 send reference signals, and other symbols send modulated data.
  • the sum of the first modulated data sent on symbol 2 (ie d 2 ) and the second modulated data sent on symbol 4 (ie -d 2) is 0 .
  • the sum of the third modulated data (ie d 1 ) sent on symbol 1 and the fourth modulated data (ie -d 1) sent on symbol 5 is zero.
  • Data transmitted on the third modulation symbol 0 (i.e., D 0) fourth modulation data (i.e., -d 0) to 0 and the sum of the transmitted symbol 6.
  • the sum of the modulated data sent on symbol 9 (that is, d 5 ) and the modulated data sent on symbol 11 (that is -d 5 ) is 0, and the sum of the modulated data sent on symbol 9 (that is, -d 5) is 0.
  • the sum of the modulated data sent (i.e. d 4 ) and the modulated data sent on the symbol 12 (i.e. -d 4 ) is zero.
  • the sum of the modulated data sent on symbol 7 (ie d 3 ) and the modulated data sent on symbol 13 (ie -d 3 ) is zero.
  • Example 5 taking L rs as 2 and L data >1 as an example, two consecutive first symbols transmit the reference signal, and the indexes of the two first symbols carrying the reference signal are l s and l s +1, respectively.
  • L data 2 as an example, the first modulated data is sent on the second symbol (symbol l s -1) and the second modulated data is sent on the third symbol (symbol l s +2).
  • s -2) The third modulated data is sent and the fourth modulated data is sent on the fifth symbol (symbol l s +3).
  • the first modulated data sent on the symbol l s -1 and the second modulated data sent on the symbol l s +2 are obtained from the same modulation data, and the third modulated data sent on the symbol l s -2 and the symbol l s +3
  • the fourth modulated data sent up is obtained from the same modulated data.
  • Each modulation data includes 1 BPSK modulation data
  • the reference signal includes 1 BPSK modulation data.
  • the sum of the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 is 0, the first modulation data sent on the symbol l s -1 and the first modulated data sent on the symbol l s +2
  • the sum of the second modulated data is 0, and the sum of the third modulated data sent on the symbol 1 s -2 and the fourth modulated data sent on the symbol 1 s +3 is 0. That is to say, the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 are opposite to each other, and the modulated data sent on the symbol l s -1 and the modulated data sent on the symbol l s +2 are mutually opposite. In order to reverse, the third modulated data sent on the symbol l s -2 and the fourth modulated data sent on the symbol l s +3 are mutually inverse.
  • a slot contains 14 symbols, and the symbol index is from 0 to 13.
  • the reference signal sent by symbol 6 is r 1
  • the reference signal sent by symbol 7 is -r 1 .
  • the modulated data sent by symbol 5 is d 5
  • the modulated data sent by symbol 8 is -d 5
  • the modulated data sent by symbol 4 is d 4
  • the modulated data sent by symbol 9 is -d 4 .
  • the terminal device also sends modulated data d 0 , d 1 , d 2 , d 3 , d 6 , d 7 , d on symbols 0, 1, 2, 3, 10, 11, 12, and 13, respectively. 8 , d 9 .
  • the modulated data is the same
  • the third modulated data sent on the symbol l s -2 is the same as the fourth modulated data sent on the symbol l s +3.
  • a time slot contains 14 symbols, and the symbol index is from 0 to 13.
  • the reference signal sent by symbol 6 is r 1
  • the reference signal sent by symbol 7 is r 1 .
  • the modulated data sent by symbol 5 is d 5
  • the modulated data sent by symbol 8 is d 5
  • the modulated data sent by symbol 4 is d 4
  • the modulated data sent by symbol 9 is d 4 .
  • the sum of the reference signal sent on the symbol l s and the reference signal sent on the symbol l s +1 is 0, and the first modulated data sent on the symbol l s -1 and the symbol l s +2 are sent on
  • the second modulated data of is the same
  • the third modulated data sent on the symbol l s -2 is the same as the fourth modulated data sent on the symbol l s +3.
  • the reference signal sent by symbol 6 is r 1
  • the reference signal sent by symbol 7 is -r 1 .
  • the modulated data sent by symbol 5 is d 5
  • the modulated data sent by symbol 8 is d 5
  • the modulated data sent by symbol 4 is d 4
  • the modulated data sent by symbol 9 is d 4 .
  • the sum of the modulated data is 0, and the sum of the third modulated data sent on the symbol 1 s -2 and the fourth modulated data sent on the symbol 1 s +3 is 0.
  • one slot contains 14 symbols, and the symbol index ranges from 0 to 13.
  • the reference signal sent by symbol 6 is r 1
  • the reference signal sent by symbol 7 is r 1 .
  • the modulated data sent by symbol 5 is d 5
  • the modulated data sent by symbol 8 is -d 5
  • the modulated data sent by symbol 4 is -d 4
  • the modulated data sent by symbol 9 is d 4 .
  • the data to be sent may be repeatedly sent multiple times in the embodiment of the present application.
  • the resource used to carry the data to be sent may be referred to as a resource unit (RU).
  • the number of symbols included in the RU in the embodiment of the present application is related to the number of repetitions of data on the RU.
  • the data to be sent and the reference signal to be modulated are modulated to obtain the modulated data and reference signal sent on the symbol.
  • the number of time slots included in the RU can be different, that is, the number of symbols included is different.
  • the modulated data and reference signal in each time slot can be sent or received according to the scheme provided in any embodiment corresponding to FIG. 4 to FIG. 14.
  • the index of the symbol in the embodiment of the present application may be the number of the symbol in a time slot, or may be the number of the symbol in an RU.
  • the configured number of repetitions may be K or K N.
  • K is a positive integer
  • K N is a positive integer.
  • the K configured for different terminal devices may be the same or different, and the K configured for different to-be-sent data of the same terminal device may be the same or different.
  • the value of N configured for different terminal devices may be the same or different, and the value of N configured for different data to be sent of the same terminal device may be the same or different.
  • the number of data transmissions on the RU is K, and the number of symbols included in the RU
  • the number of time slots included in an RU is The number of symbols included in a slot
  • the number of time slots included in an RU is The number of symbols included in a slot
  • the number of times the data on the configured RU is sent is greater than 1, and is an even number of times, that is, K>1, and K is an even number, and the number of symbols contained in an RU is
  • the LTE system narrow band internet of things narrow band internet of things
  • different configuration schemes can be used for the configured transmission times when the method for transmitting reference signals and modulated data provided in the embodiment of the present application is used and when the method provided by the embodiment of the present application is not used.
  • the configured number of transmissions is K
  • the number of symbols on one RU is The actual number of transmissions.
  • the configured number of transmissions is K′
  • the number of data sent in the RU can be increased by reducing the number of repetitions of the data to be sent and increasing the number of symbols contained in the RU, thereby reducing the coding rate and improving the performance of demodulated data.
  • Example 6 as shown in Figure 15, the data in one RU is repeated K/2 times.
  • the number of repetitions is 1, one RU contains 1 time slot (ie ), 1 time slot contains 14 symbols, and the transmitted data is shown in Figure 11.
  • the number of repeated transmissions of data on the RU configured as shown in Figure 15 is K.
  • K is an even number
  • the number of time slots included in the RU is 2, and the number of symbols contained in each time slot is 14, that is, one RU contains The number of symbols is 28.
  • the number of modulated data that can be sent in one RU is 12 (from d 0 to d 11 ).
  • the number of time slots included in one RU is 1 and the number of symbols included in one time slot is 14, then the number of modulated data that can be sent in one RU is 6.
  • TBS transport block size
  • the modulated data or reference signal when the modulated data or reference signal is sent on a symbol, the modulated data or reference signal may be filtered before sending.
  • the filtering may be time-domain filtering. Specifically, frequency domain resource mapping, inverse Fourier transform, and time domain filtering may be performed on the reference signal or modulation data before being sent.
  • the modulation data is the modulation data obtained by BPSK modulation of the bits to be sent.
  • the BPSK data (modulated data or reference signal) on the symbol 1 is sent, the BPSK data on the symbol 1 undergoes Pi/2 phase rotation to obtain rotation data, and the rotation data includes 1 data.
  • one piece of BPSK data of symbol 1 may be modulated data or reference signal generated from the bits to be sent.
  • the rotation data is mapped on the corresponding frequency domain resources by way of resource mapping. Specifically, the rotation data is mapped in a subcarrier, and the position (or referred to as an index) of the subcarrier is denoted as k.
  • the rotation data undergoes inverse Fourier transform after resource mapping to obtain the time-domain output data x l (t) of the symbol l. Since the rotation data contains 1 data, the output of the Fourier transform can be expressed as Expression (2):
  • phase offset which can be predefined or determined by the symbol index 1.
  • symbol index 1 a phase offset
  • t offset is a time domain offset factor, which can be a predefined fixed value. Among them, 0 ⁇ t ⁇ N ⁇ T s , and N is a positive integer.
  • T s is a time unit factor, and T s can be defined on the terminal device or configured by the network device to the terminal device through signaling.
  • the time domain output data x l (t) is filtered in the time domain to obtain the time domain signal s l (t) of the symbol l, and the terminal device sends the time domain signal s l (t).
  • the coefficient of the time domain filter is expressed as C(t), and the length of the filter, that is, the duration, is L ⁇ T.
  • the time-domain filtering operation can be implemented using a polyphase network (PPN).
  • PPN polyphase network
  • time-domain filtering can be realized by using expression (3):
  • T N ⁇ T s
  • T is also the duration of a symbol.
  • k1 is an integer greater than or equal to 0, and k2 is an integer greater than or equal to k1.
  • the offset is the offset value.
  • the offset can be predefined or configured by the network device through signaling for the terminal.
  • offset can be l ⁇ T or Indicates rounding down.
  • time domain signal s l (t) can be specifically expressed by the following expression (4):
  • the network device can use the known reference signal to perform operations such as channel estimation and equalization to demodulate the BPSK data generated from the bits to be sent.
  • the reference signal can be obtained by BPSK modulation from bit data known by the network device.
  • the known bit data can be generated by a pseudo-random sequence (such as a pseudo noise sequence or a Gold sequence), and the initial value of the pseudo-random sequence can be determined by the cell identity or the identity of the terminal device, so the network device can determine that the pseudo-random sequence is The generated bit data.
  • the embodiments of the present application also provide corresponding devices, including corresponding modules for executing the foregoing embodiments.
  • the module can be software, hardware, or a combination of software and hardware.
  • FIG 16 shows a schematic diagram of the structure of a device.
  • the apparatus 1600 may be a network device, a terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a chip that supports the terminal device to implement the above method. Or processor, etc.
  • the device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.
  • the apparatus 1600 may include one or more processors 1601, and the processor 1601 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 1601 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process The data of the software program.
  • the processor 1601 may also store instructions and/or data 1603, and the instructions and/or data 1603 may be executed by the processor, so that the apparatus 1600 executes the above method embodiments. Described method.
  • the processor 1601 may include a transceiver unit for implementing receiving and sending functions.
  • the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separated or integrated.
  • the foregoing transceiver circuit, interface, or interface circuit may be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit may be used for signal transmission or transmission.
  • the apparatus 1600 may include a circuit, and the circuit may implement the sending or receiving or communication function in the foregoing method embodiment.
  • the apparatus 1600 may include one or more memories 1602, on which instructions 1604 may be stored, and the instructions may be executed on the processor, so that the apparatus 1600 executes the foregoing method embodiments. Described method.
  • data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and the memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.
  • the apparatus 1600 may further include a transceiver 1605 and/or an antenna 1606.
  • the processor 1601 may be referred to as a processing unit, and controls the device 1600.
  • the transceiver 1605 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver device, or a transceiver module, etc., for implementing the transceiver function.
  • the apparatus 1600 in the embodiment of the present application may be used to execute the method described in the embodiment corresponding to FIG. 4 to FIG. 14 in the embodiment of the present application, or may be used to execute the method described in the above two or more figures. The methods are combined with each other.
  • the processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured by various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the device described in the above embodiment may be a network device or a terminal device, but the scope of the device described in this application is not limited to this, and the structure of the device may not be limited by FIG. 16.
  • the device can be a stand-alone device or can be part of a larger device.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as modem (MSM)
  • FIG. 17 provides a schematic structural diagram of a terminal device.
  • the terminal device can be applied to the scenario shown in FIG. 1.
  • FIG. 17 only shows the main components of the terminal device.
  • the terminal device 1700 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. .
  • the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and performs processing on the data. deal with.
  • FIG. 17 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 17 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiving function can be regarded as the transceiving unit 1711 of the terminal device 1700
  • the processor with the processing function can be regarded as the processing unit 1712 of the terminal device 1700.
  • the terminal device 1700 includes a transceiving unit 1711 and a processing unit 1712.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1711 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1711 as the sending unit, that is, the transceiver unit 1711 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the foregoing receiving unit and sending unit may be an integrated unit or multiple independent units.
  • the above-mentioned receiving unit and sending unit may be in one geographic location, or may be scattered in multiple geographic locations.
  • the device can be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.).
  • the device may be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.).
  • the device may also be another communication module, which is used to implement the method in the method embodiment of the present application.
  • the device 1800 may include: a processing module 1802 (or referred to as a processing unit).
  • a transceiver module 1801 or referred to as a transceiving unit
  • a storage module 1803 or referred to as a storage unit).
  • one or more modules as shown in Figure 18 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It may be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application.
  • the processor, memory, and transceiver can be set separately or integrated.
  • the device has the function of implementing the terminal described in the embodiment of the application.
  • the device includes a module or unit or means corresponding to the terminal to execute the steps related to the terminal described in the embodiment of the application.
  • the function or unit is The means can be implemented through software, or through hardware, or through hardware execution of corresponding software, or through a combination of software and hardware.
  • the device has the function of implementing the network device described in the embodiment of the application.
  • the device includes the module or unit or means corresponding to the network device executing the steps related to the network device described in the embodiment of the application.
  • the functions or units or means can be realized by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware. For details, reference may be made to the corresponding description in the foregoing corresponding method embodiment.
  • each module in the apparatus 1800 in the embodiment of the present application may be used to execute the method described in the embodiment corresponding to FIG. 4 to FIG. 14 in the embodiment of the present application, or may be used to execute the above two diagrams or more. The methods described in each figure are combined with each other.
  • an apparatus 1800 may include: a transceiver module 1801 and a processing module 1802.
  • the processing module 1802 is configured to obtain the reference signal, the first modulation data, and the second modulation data;
  • the transceiver module 1801 is configured to send a reference signal on a first symbol; send first modulated data on a second symbol, and send second modulated data on a third symbol; wherein, the second symbol and the third symbol Adjacent to the first symbol in the time domain, and the second symbol is different from the third symbol, the sum of the first modulation data and the second modulation data is 0, or the first symbol
  • the first modulation data is the same as the second modulation data.
  • two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are used to carry the reference signal.
  • the sum of the reference signals respectively carried on a symbol is zero.
  • two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are respectively The reference signals carried are the same.
  • the transceiver module 1801 is further configured to send third modulated data on a fourth symbol, and send fourth modulated data on a fifth symbol, where the fourth symbol corresponds to the second modulated data in the time domain.
  • the symbols are adjacent, and the fifth symbol is adjacent to the third symbol in the time domain; the sum of the third modulation data and the fourth modulation data is 0.
  • the transceiver module 1801 is further configured to send third modulated data on a fourth symbol, and send fourth modulated data on a fifth symbol, where the fourth symbol corresponds to the second modulated data in the time domain. Symbols are adjacent, and the fifth symbol is adjacent to the third symbol in the time domain; when the first modulation data and the second modulation data are the same, the third modulation data and the fourth modulation data are the same The data is the same.
  • the first symbol, the second symbol, and the third symbol are included in a resource unit RU, and the number of symbols included in the RU is related to the number of repetitions of data on the RU, and the RU
  • the above data includes the first modulation data and the second modulation data.
  • the reference signal on the first symbol is used to demodulate the first modulation data and the second modulation data.
  • the reference signal on the first symbol, the first modulation data, and the second modulation data are sent after filtering processing.
  • the transceiver module 1801 is configured to receive a reference signal on a first symbol; receive first modulated data on a second symbol, and receive second modulated data on a third symbol;
  • the processing module 1802 is configured to demodulate the first modulation data and the second modulation data according to the reference signal.
  • the second symbol and the third symbol are respectively adjacent to the first symbol in the time domain, and the second symbol is different from the third symbol, the first modulation data and the The sum of the second modulation data is 0, or the first modulation data and the second modulation data are the same.
  • two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are used to carry the reference signal.
  • the sum of the reference signals respectively carried on a symbol is zero.
  • two consecutive first symbols in the time domain are used to carry the reference signal, and the two consecutive first symbols in the time domain are respectively The reference signals carried are the same.
  • the transceiver module 1801 is further configured to receive third modulated data on a fourth symbol, and receive fourth modulated data on a fifth symbol, where the fourth symbol corresponds to the second modulated data in the time domain.
  • the symbols are adjacent, the fifth symbol is adjacent to the third symbol in the time domain, and the sum of the third modulation data and the fourth modulation data is 0.
  • the transceiver module 1801 is further configured to receive third modulated data on a fourth symbol, and receive fourth modulated data on a fifth symbol, where the fourth symbol corresponds to the second modulated data in the time domain.
  • the symbols are adjacent, and the third modulation data is the same as the fourth modulation data.
  • the first symbol, the second symbol, and the third symbol are included in a resource unit RU, and the number of symbols included in the RU is related to the number of repetitions of data on the RU, and the RU
  • the above data includes the first modulation data and the second modulation data.
  • the reference signal on the first symbol, the first modulation data, and the second modulation data are obtained after filtering processing.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the processing unit used to execute these technologies at a communication device can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, etc.
  • the general-purpose processor may be a microprocessor.
  • the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.
  • This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one of! or "at least one of" as used herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, and there are six cases of A, B and C at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the corresponding relationships shown in the tables in this application can be configured or pre-defined.
  • the value of the information in each table is only an example, and can be configured to other values, which is not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, and so on.
  • the names of the parameters shown in the titles in the above tables may also adopt other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.
  • the pre-definition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.
  • the systems, devices, and methods described in this application can also be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

一种信号发送方法、信号接收方法及装置，以解决影响信道估计性能的问题。通过一个或者多个连续的符号上发送参考信号，并在发送参考信号的时域上前后相邻的符号上发送调制数据，发送参考信号符号的前一个发送调制数据的符号和参考信号符号的后一个发送调制数据的符号分别承载的调制数据之和为零或者相同，从而在经过时域滤波后，参考信号不会受到相邻调制数据的干扰，进而可以保证信道估计性能。

Description

一种信号发送方法、信号接收方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种信号发送方法、信号接收方法及装置。
背景技术
物联网(internet of things，IoT)场景要求设备具有广覆盖，电池寿命长，价格相对较低等特征，从而设备间传输可以采用异步传输。为了降低异步传输产生的带外泄露，可以对时域信号采用时域滤波方式，时域滤波可以采用多相网络(polyphase network)，且滤波器的长度超过一个符号。
完整的数据传输过程中一般而言除了发送数据也要发送参考信号(reference signal)。该参考信号用于信道估计，得到的信道响应可以用来辅助解调接收的数据。当时域滤波器持续时间超过一个符号的持续时间时，采用多相网络实现时域滤波得到的一个符号的滤波数据是由若干个符号的时域信号混合的。在该情况下，参考信号所在符号会受到相邻若干个符号的干扰，影响信道估计的性能，从而影响解调性能。
发明内容
本申请实施例提供了一种信号发送方法、信号接收方法及装置，以解决影响信道估计性能的问题。
第一方面，本申请实施例提供一种信号发送方法，该方法可以由终端设备执行，也可以由终端设备的部件(例如处理器、芯片、或芯片系统等)执行，也可以由网络设备执行，还可以由网络设备的部件(例如处理器、芯片、或芯片系统等)执行。下面以执行主体为终端设备为例进行描述。终端设备在第一符号上向网络设备发送参考信号，并在第二符号上向网络设备发送第一调制数据，和在第三符号上向网络设备发送第二调制数据；其中，所述第二符号和所述第三符号分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。
通过上述方式，采用参考信号的符号时域前后相邻的调制数据之和为零(或者说互为反向)或者相同，使得经过时域滤波后的参考信号避免受到相邻调制数据的干扰，保证信道估计性能。
在一种可能的实现方式中，所述第一符号上的参考信号用于解调所述第一调制数据和所述第二调制数据。通过参考信号对信道进行估计，从而从第一调制数据和第二调制数据中解调到更准确的数据。
在一种可能的实现方式中，针对所述第一符号上发送的参考信号、第一调制数据和第二调制数据可以是采用二进制相移键控BPSK或者Pi/2-BPSK的调制方式处理得到的。所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后再发送的。例如，在发送参考信号和调制数据时，可以是执行频域资源映射、反傅里叶变换以及时域滤波处理后再发送。
在一种可能的实现方式中，一个时隙中可以发送至少两个参考信号，可以保证终端设 备在高速移动场景下的解调数据的性能。至少两个参考信号可以在时域上连续，也可以在时域上不连续。
在一种可能的实现方式中，当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。连续发送两个参考信号，可以保证终端设备在高速移动场景下的性能，并且两个参考信号之和为零，保证参考信号之间不会互相产生干扰。
在一种可能的实现方式中，当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。连续发送两个参考信号，可以保证终端设备在高速移动场景下的性能，并且两个参考信号相同，参考信号的符号时域前后相邻的调制数据也相同，保证参考信号之间不会互相产生干扰，并且降低调制数据对参考信号的干扰。
在一种可能的实现方式中，所述第一调制数据和所述第二调制数据之和为0，所述方法还包括：在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；所述第三调制数据和所述第四调制数据之和为0。上述设计中，采用参考信号的符号时域前后相邻的多个调制数据互为反向，使得经过时域滤波后的参考信号避免受到相邻的多个调制数据的干扰，进一步保证信道估计性能。
在一种可能的实现方式中，所述第一调制数据和所述第二调制数据相同，所述方法还包括：在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；所述第三调制数据和所述四调制数据相同。上述设计中，采用参考信号的符号时域前后相邻的多个调制数据相同，使得经过时域滤波后的参考信号避免受到相邻的多个调制数据的干扰，进一步保证信道估计性能。
在一种可能的实现方式中，所述第一符号、所述第二符号和所述第三符号包含在资源单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
可选的，RU上的数据的发送次数为K，RU包括的符号数目
Figure PCTCN2019114758-appb-000001
比如，RU上的数据的发送次数为1次时，即K＝1，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000002
再比如，配置的RU上的数据的发送次数大于1次，且为偶数次，即K>1,且K为偶数，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000003
一种情况中，在采用本申请实施例提供的发送参考信号和调制数据的方法情况下与不采用本申请实施例提供的方法情况下配置的发送次数均为K时，不采用本申请实施例提供的方案时，发送的次数变化的情况下，一个RU上的符号数量始终不变。在采用本申请实施例提供的方法情况下，比如配置的发送次数K＝1，则一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000004
实际发送时，发送一次RU上的数据。再比如配置的发送次数K>1,且K为偶数，则实际发送时，为了提高解调性能，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000005
RU上的数据发送的次数为K/f(K)。例如，K>1,且K为偶数，f(K)＝2，RU上的数据实际 发送的次数为K/2。
另一种情况中，在采用本申请实施例提供的发送参考信号和调制数据的方法情况下与不采用本申请实施例提供的方法情况下配置的发送次数可以采用不同的配置方案。比如，不采用本申请实施例提供的方案时配置的发送次数为K，一个RU上的符号数量为
Figure PCTCN2019114758-appb-000006
实际发送次数为K。在采用本申请实施例提供的方案时，配置的发送次数为K′，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000007
比如，K′＝1时，f(K′)＝1,再比如，K′>1,f(K′)＝2。
第二方面，本申请实施例提供一种信号接收方法，该方法可以由终端设备执行，也可以由终端设备的部件(例如处理器、芯片、或芯片系统等)执行，也可以由网络设备执行，还可以由网络设备的部件(例如处理器、芯片、或芯片系统等)执行。下面以执行主体为网络设备为例进行描述。网络设备在第一符号上接收参考信号；并且在第二符号上接收第一调制数据，和在第三符号上接收第二调制数据；其中，所述第二符号和所述第三符号在时域上分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。通过上述方式，采用参考信号的符号时域前后相邻的调制数据之和为零(或者说互为反向)或者相同，使得经过时域滤波后的参考信号避免受到相邻调制数据的干扰，保证信道估计性能。
在一种可能的实现方式中，所述第一符号上的参考信号用于解调所述第一调制数据和所述第二调制数据。
在一种可能的实现方式中，针对所述第一符号上发送的参考信号、第一调制数据和第二调制数据可以是采用二进制相移键控BPSK或者Pi/2-BPSK的调制方式处理得到的。所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后获得的。例如，在接收参考信号和调制数据时，可以是对接收到的数据(包括调制数据和参考信号)执行频域资源映射、反傅里叶变换以及时域滤波处理后得到的。
在一种可能的实现方式中，当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。
在一种可能的实现方式中，当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。
在一种可能的实现方式中，所述第一调制数据和所述第二调制数据之和为0，所述方法还包括：网络设备在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻，所述第三调制数据和所述第四调制数据之和为0。
在一种可能的实现方式中，所述第一调制数据和所述第二调制数据相同，所述方法还包括：网络设备在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第三调制数据和所述四调制数据相同。
在一种可能的实现方式中，所述第一符号、所述第二符号和所述第三符号包含在资源 单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
在一种可能的实现方式中，网络设备根据所述第一符号上的参考信号解调所述第一调制数据和所述第二调制数据。
关于上述第二方面有益效果的介绍，可具体参见上述第一方面的记载，此处不再赘述。
第三方面，本申请实施例提供一种装置，可以实现上述第一方面、或第一方面任一种可能的实现方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第四方面，本申请实施例提供一种装置，可以实现上述第二方面、或第二方面任一种可能的实现方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第五方面，本申请实施例提供一种装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第一方面、或第一方面任一种可能的实现方式中所述的方法。
第六方面，本申请实施例提供一种装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第二方面、或第二方面任一种可能的实现方式中所述的方法。
第七方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第一方面、或第一方面任一种可能的实现方式中所述的方法。
第八方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第二方面、或第二方面任一种可能的实现方式中所述的方法。
第九方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，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方面、或第一方面任一种可能的实现方式中所述的方法。
第十方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，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二方面、或第二方面任一种可能的实现方式中所述的方法。
第十一方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第一方面、或第一方面任一种可能的实现方式中所述的方法。
第十二方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第二方面、或第二方面任一种可能的实现方式中所述的方法。
第十三方面，本申请实施例提供一种通信系统，包括：上述第三方面所述的装置，和/或，上述第四方面所述的装置。
第十四方面，本申请实施例提供一种通信系统，包括：上述第五方面所述的装置，和 /或，上述第六方面所述的装置。
附图说明
图1为本申请实施例提供的通信系统的架构示意图；
图2为本申请实施例提供的单频(Single tone)波形的数据处理示意图；
图3为本申请实施例提供的调制数据和参考信号所在的符号示意图；
图4为本申请实施例提供的信号传输方法流程示意图；
图5为本申请实施例提供的示例1的一种调制数据和参考信号所在的符号示意图；
图6为本申请实施例提供的示例1的另一种调制数据和参考信号所在的符号示意图；
图7为本申请实施例提供的示例2的一种调制数据和参考信号所在的符号示意图；
图8为本申请实施例提供的示例2的又一种调制数据和参考信号所在的符号示意图；
图9为本申请实施例提供的示例3的一种调制数据和参考信号所在的符号示意图；
图10为本申请实施例提供的示例3的另一种调制数据和参考信号所在的符号示意图；
图11为本申请实施例提供的示例4的一种调制数据和参考信号所在的符号示意图；
图12为本申请实施例提供的示例5的一种调制数据和参考信号所在的符号示意图；
图13为本申请实施例提供的示例5的另一种调制数据和参考信号所在的符号示意图；
图14为本申请实施例提供的示例5的又一种调制数据和参考信号所在的符号示意图；
图15为本申请实施例提供的示例6的一种调制数据和参考信号所在的符号示意图；
图16为本申请实施例提供的装置1600结构示意图；
图17为本申请实施例提供的装置1700示意图；
图18为本申请实施例提供的装置1800示意图。
具体实施方式
图1是本申请的实施例应用的通信系统的架构示意图。如图1所示，该通信系统包括网络设备和终端设备(如图1中的终端设备1-终端设备6)。终端设备通过无线的方式与网络设备相连。终端设备可以是固定位置的，也可以是可移动的。另外，需要注意的是，图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括在图1中未示出的核心网设备、无线中继设备和无线回传设备中的一种或多种。本申请的实施例对该通信系统中包括的网络设备和终端设备的数量不做限定。
本申请实施例描述的技术可用于各种通信系统，例如第四代(4th generation，4G)通信系统，4.5G通信系统，5G通信系统，多种通信系统融合的系统，或者未来演进的通信系统。例如长期演进(long term evolution，LTE)系统，新空口(new radio,NR)系统，无线保真(wireless-fidelity，WiFi)系统，以及第三代合作伙伴计划(3rd generation partnership project，3GPP)相关的通信系统等，以及其他此类通信系统。
本申请中，网络设备可以是任意一种具有无线收发功能的设备。包括但不限于：LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，NR中的基站(gNodeB或gNB)或收发点(transmission receiving point/transmission reception point,TRP)，3GPP后续演进的基站，WiFi系统中的接入节点，无线中继节点，无线回传节点等。基站可以是：宏基站，微基站，微微基站，小站，中继站，或，气球站等。多个基站可以支持上述提及 的同一种技术的网络，也可以支持上述提及的不同技术的网络。基站可以包含一个或多个共站或非共站的TRP。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或，分布单元(distributed unit,DU)。网络设备还可以是服务器，可穿戴设备，机器通信设备、或车载设备等。以下以网络设备为基站为例进行说明。所述多个网络设备可以为同一类型的基站，也可以为不同类型的基站。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以与不同技术的多个基站进行通信，例如，终端设备可以与支持LTE网络的基站通信，也可以与支持5G网络的基站通信，还可以支持与LTE网络的基站以及5G网络的基站的双连接。
终端设备是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的终端设备、车载终端设备、无人驾驶(self driving)中的终端设备、辅助驾驶中的终端设备、远程医疗(remote medical)中的终端设备、智能电网(smart grid)中的终端设备、运输安全(transportation safety)中的终端设备、智慧城市(smart city)中的终端设备、智慧家庭(smart home)中的终端设备等等。本申请的实施例对应用场景不做限定。终端设备有时也可以称为终端、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、机器终端、UE代理或UE装置等。终端设备可以是固定的，也可以是移动的。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
作为示例而非限定，在本申请中，终端设备可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请中，终端设备可以是物联网(internet of things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请中的终端设备可以是机器类型通信 (machine type communication，MTC)中的终端设备。本申请的终端设备可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。因此，本申请实施例可以应用于车联网，例如车辆外联(vehicle to everything，V2X)、车间通信长期演进技术(long term evolution vehicle，LTE-V)、车到车(vehicle to vehicle，V2V)等。
应理解的是，本申请实施例描述的系统架构是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可以理解，随着网络架构的演进和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
下面对本申请实施例中涉及的技术术语进行说明。
1)时隙(slot)和符号(symbol)
在本申请中，如果没有特殊说明，符号指时域符号，这里的时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是离散傅里叶变换扩频OFDM(Discrete Fourier Transform-spread-OFDM，DFT-s-OFDM)符号。符号采用常规循环前缀(normal cyclic prefix，NCP)情况下，一个slot可以包括14个符号；在符号采用扩展循环前缀(extended cyclic prefix，ECP)的情况下，一个slot可以包括12个符号。本申请的实施例中以一个slot包括14个符号为例。当然在未来通信系统中，一个slot还可以包括其它数量的符号，比如一个slot中包括16个符号，本申请对此不作限定。
2)单频(Single tone)波形
Single tone波形将一个调制数据映射到一个子载波内，然后经过傅里叶反变换生成一个符号的时域信号。其中调制数据可以为二进制相移键控(binary phase shift keying，BPSK)调制数据进行Pi/2相位旋转，其中Pi/2相位旋转的相位因子由符号的索引l确定，比如该相位因子为
Figure PCTCN2019114758-appb-000008
其中，该BPSK调制数据由待发送比特经过BPSK调制得到。
为了降低single tone波形的带外泄露(out of band emission，OOB emission)，可以采用时域滤波器对符号上的时域信号进行时域滤波，例如参见图2所示。比如，时域滤波可以采用常用的线性卷积(linear convolution)，此时时域滤波器的持续时间一般小于一个符号的持续时间。时域滤波还可以采用多相网络(polyphase network，PPN)进行实现，此时时域滤波器持续时间超过一个符号的持续时间。
应理解的是，当时域滤波器持续时间超过一个符号的持续时间时，采用多相网络实现时域滤波得到的一个符号的滤波数据是由若干个符号的时域信号混合而成的。
3)参考信号和调制数据
数据传输过程中，一般而言除了发送调制数据也要发送参考信号(reference signal)，参考信号也可以称为导频(pilot)信号。与调制数据一起发送的参考信号是终端设备与网络设备均已知的信号，主要用于辅助接收端进行数据的解调，因此也可以称为解调参考信号(demodulation reference signal，DMRS)。映射到一个子载波内的数据为DMRS时，该符号发送的是参考信号。一般而言参考信号与调制数据位于不同的符号，频域可以占用相 同的带宽(即相同的子载波位置)。后续为了描述方便，将承载调制数据的符号称为数据符号，将承载参考信号的符号称为参考信号符号。终端设备发送数据与参考信号，网络设备接收到相应的调制数据与参考信号后，利用已知的参考信号进行信道估计(channel estimation)与插值(interpolation)等操作估计出数据所在的符号的信道响应(channel response)，然后利用接收的数据与其估计的信道响应进行均衡(equalization)、解调等操作解调出发送的数据。
在一个发送过程中，参考信号和由待发送数据生成的调制数据一般而言是时分的，即参考信号所在的符号与由待发送数据生成的调制数据所在的符号是不同的。例如，如图3所示。图3中以时隙包含14个符号为例，时隙内符号索引从0至13，其中参考信号符号内发送的为参考信号，数据符号内发送的为由待发送数据生成的调制数据。图3中符号3和符号10为参考信号符号，其他符号为数据符号。
示例性的，假设时域滤波器的系数(称为C(t))的持续之间为3×T，一个符号的持续时间为T。可以知道经过时域滤波后符号3发送的参考信号会受到符号2和符号4所发送的数据的干扰。也就是说，Singlet tone波形发送参考信号和调制数据时，如果进行时域滤波，时域滤波器持续时间超过一个符号的持续时间时，参考信号所在符号会受到相邻若干个符号的干扰，影响信道估计的性能，从而影响解调性能。
基于此，本申请实施例提供了一种信号发送、信号接收方法及装置，用于解决参考信号所在符号收到相邻若干符号干扰，影响解调性能的问题。
可以理解的是，本申请方法可以应用于发送设备，也可以应用于接收设备。发送设备可以是终端设备，则接收设备可以是网络设备。比如在图1所示的通信系统中，终端设备1～终端设备6可以使用本申请实施例提供的方案发送数据和参考信号给网络设备，网络设备需要接收终端设备1～终端设备6发送的数据和参考信号。发送设备也可以网络设备，则接收端设备可以是终端设备。比如在图1所示的通信系统中，网络设备可以使用本申请实施例提供的方案发送数据和参考信号给终端设备1～终端设备6，终端设备1～终端设备6需要接收网络设备发送的数据和参考信号。如下以发送设备为终端设备，接收设备是网络设备为例，对本申请实施例提供的方法进行描述。
如图4所示，该方法包括步骤S401和S402。
S401，终端设备在连续L rs个符号上向网络设备发送参考信号，其中L rs为正整数，所述L rs个符号的起始符号索引为l s。从而网络设备在连续L rs个符号上接收参考信号。
S402，终端设备分别在符号l s-i和符号l s+L rs-1+i上向网络设备发送调制数据。i为小于或者等于L data的正整数，L data为正整数。从而，网络设备分别在符号l s-i和符号l s+L rs-1+i上接收调制数据。
可选地，符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据基于同一调制数据得到。可选地，所述符号l s-i上的调制数据的数据长度和符号l s+L rs-1+i上的调制数据的数据长度与所述同一调制数据的数据长度相同。比如，符号l s-1上的调制数据和符号l s+L rs上的调制数据均是调制数据A，或者由A的变形得到，例如，符号l s-1上的调制数据和符号l s+L rs上的调制数据之和为0，比如符号l s-1上的调制数据为A，符号 l s+L rs上的调制数据为-A，或者符号l s-1上的调制数据为-A，符号l s+L rs上的调制数据为A。
在一种可行的实现方式中，比如，发送参考信号的符号称为第一符号，与该第一符号在时域上相邻的两个不同的符号(符号l s-i和符号l s+L rs-1+i)分别称为第二符号和第三符号。终端设备在第一符号上发送参考信号；在第二符号发送第一调制数据，和在第三符号上发送第二调制数据；其中，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。进一步的，网络设备在第一符号上接收参考信号，网络设备在第二符号上接收第一调制数据，并在第三符号上接收第二调制数据。
在另一种可行的实现方式中，时域上连续的两个第一符号用于承载参考信号的情况下，当所述符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据之和为0时，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。在另一种可行的实现方式中，时域上连续的两个第一符号用于承载参考信号的情况下，当所述符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据相同时，所述时域连续的两个第一符号上分别承载的参考信号相同。
在又一种可行的实现方式中，时域上连续的两个第一符号用于承载参考信号的情况下，当所述符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据相同时，所述时域连续的两个第一符号上分别承载的参考信号之和为0。
在再一种可行的实现方式中，时域上连续的两个第一符号用于承载参考信号的情况下，当所述符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据之和为0时，所述时域连续的两个第一符号上分别承载的参考信号相同。
本申请实施例中，符号的索引也可以称为符号的序号或标识。其中，l s-i和l s+L rs-1+i为符号的索引。符号l s-i至符号l s+L rs-1+i可以为用于终端设备进行数据(包括调制数据和参考信号)传输的符号中的L rs+2i个符号。其中，符号的索引可以大于或者等于0，还可以等于0。以NR系统为例，终端设备在传数据传输时，一个时隙(slot)可以包括14个符号，当该14个符号从0开始编号时，该14个符号的索引为从0至13，该14个符号分别为：符号0、符号1、……、符号13，此时，假设符号l s-i为14个符号中的第1个符号，符号l s-i可以为符号0。当该14个符号从1开始编号时，该14个符号的索引为从1至14，该14个符号分别为：符号1、符号2、……..、符号14，此时，假设符号l s-i为14个符号中的第2个符号，符号l s-i可以为符号2。当14个符号从-1开始编号时，该14个符号的索引为从-2至11，该14个符号分别为：符号-2、符号-1、符号0、…….、符号11，此时，假设符号l s-i为14个符号中的第2个符号，符号l s-i可以为符号-1。
符号l s-i至符号l s+L rs-1+i还可以是多个时隙或者多个子帧(subframe)内包含的符号，索引l s-i至l s+L rs-1+i为该多个时隙或者多个子帧内符号的索引，也就是符号l s-i至符号l s+L rs-1+i可以跨越多个时隙或者多个子帧。比如符号l s-i至符号l s+L rs-1+i位于连续2个时隙内，该2个时隙内的符号索引为0至27(一个时隙包含14个符号)，则可以理解符号l s-i和符号l s+L rs-1+i可能的取值为l s-i>＝0，且l s+L rs-1+i≤27。
本申请实施例中符号上发送的调制数据或者参考符号可以通过如下方式获得：采用某种调制方式对包括一个或多个比特的比特流进行调制处理，得到一个或多个复数符号，将得到的一个或多个复数符号一对一映射到一个或多个时域符号上。其中，上述比特流可以采用各种处理方式得到，如：可以将原始比特流经过编码、交织、加扰等处理得到该比特流。原始比特流可以根据终端设备待发送的业务得到，本申请实施例对此不予限制。
本申请实施例中调制方式可以为BPSK调制，或者Pi/2-BPSK调制。在本申请实施例中，可以将经过BPSK调制后映射到子载波上的数据称为BPSK调制数据，将经过Pi/2-BPSK调制后映射子载波上的数据称为Pi/2-BPSK调制数据。后续描述时以BPSK调制数据为例。
可选地，本申请实施例中在符号上发送调制数据或者参考信号时，对调制数据或者参考信号进行滤波后再发送。例如，滤波可以是时域滤波。具体的，可以对参考信号或调制数据进行频域资源映射、反傅里叶变换以及时域滤波处理后再发送。
终端设备可以通过接收来自网络设备的信令确定是否采用本申请实施例提供的方案发送数据和参考信号。例如，该信令包含的1个或者多个比特位，用来指示是否采用本申请实施例提供的方案发送数据和参考信号。以1个比特位为例，比如，该1个比特位上的数值为1时，终端设备可以采用本申请实施例提供的方案发送数据和参考信号。该1个比特位上的数值为0时，终端设备不采用本申请实施例提供的方案发送数据和参考信号。例如，按照非重复映射的方式发送数据和参考信号，即符号l s-1上的调制数据和符号l s+L rs上的调制数据之间是不相关的。再比如，该1个比特位上的数值为0时，终端设备可以采用本申请实施例提供的方案发送数据和参考信号。该1个比特位上的数值为1时，终端设备不采用本申请实施例提供的方案发送数据和参考数据。
在终端设备作为接收端的情况下，网络设备可以发送信令指示终端设备是否采用本申请实施例提供的方案接收数据和参考信号。应理解的是，在终端设备作为接收端的情况下，网络设备也可以不发送信令指示，终端设备通过解析确定两个符号上的调制数据相同时，可以丢弃其中一个，当确定两个符号上的调制数据之和为0时，也可以丢弃其中一个。
在本申请实施例中，信令可以是半静态信令和/或动态信令。半静态信令可以是无线资源控制(radio resource control，RRC)信令、广播消息、系统消息或媒体接入控制(medium access control，MAC)控制元素(control element，CE)。其中，广播消息可以包括剩余最小系统消息(remaining minimum system information，RMSI)。动态信令可以是物理层信令。物理层信令可以是由物理控制信道携带的信令或者物理数据信道携带的信令。其中，物理数据信道可以是下行信道，例如物理下行共享信道(physical downlink shared channel，PDSCH)。物理控制信道可以是物理下行控制信道(physical downlink control channel， PDCCH)、增强物理下行控制信道(enhanced physical downlink control channel，EPDCCH)、窄带物理下行控制信道(narrowband physical downlink control channel，NPDCCH)或机器类通信物理下行控制信道(machine type communication(MTC)physical downlink control channel，MPDCCH)。其中，物理层信令还可以称为下行控制信息(downlink control information，DCI)。物理控制信道还可以是物理副链路控制信道(physical sidelink control channel)，物理副链路控制信道携带的信令还可以称为副链路控制信息(sidelink control information，SCI)。
示例1，以L rs为1，L data为1为例，用于发送参考信号的符号称为第一符号，即第一符号的索引可以为l s。与第一符号相邻的两个符号分别为第二符号和第三符号，第二符号与第三符号不同，比如第二符号在时域上早于第三符号，即第二符号的索引为l s-1，第三符号的索引为l s+1，当然第二符号在时域上还可以晚于第三符号，即第二符号的索引为l s+1，第三符号的索引为l s-1。本申请实施例后续描述时以第二符号在时域上早于第三符号为例。为了描述方便将在第二符号上发送给的调制数据称为第一调制数据，将在第三符号上发送的调制数据称为第二调制数据。从而终端设备在第一符号上向网络设备发送参考信号，在第二符号上向网络设备发送第一调制数据，在第三符号上向网络设备发发送第二调制数据。进一步的，网络设备在第一符号上接收参考信号，网络设备在第二符号上接收第一调制数据，并在第三符号上接收第二调制数据。例如，第一调制数据和第二调制数据之和为0，或者，第一调制数据和第二调制数据相同。
例如，符号l s-1上发送的第一调制数据表示为d left，d left的数据长度为1。符号l s+1上发送的第二调制数据表示为d right，d right的数据长度为1。其中，第一调制数据以及第二调制数据均可以基于同一调制数据d 1st确定。d 1st的数据长度为1。可以是，d left＝d 1st，d right＝-d 1st，也可以是d left＝-d 1st，-d right＝d 1st，即满足-d left＝d right，或者满足d left＝-d right。还可以是d left＝d 1st，d right＝d 1st，即满足d left＝d right。
参见图5所示，以一个时隙包括14个符号为例，符号索引为0-13。其中符号3和符号10发送参考信号，符号3和符号10均可以称为参考信号符号。当采用符号3(即l s＝3)发送参考信号时，假设d 1st＝d 2，符号2发送的调制数据d left＝d 1st，符号4发送的调制数据为d right＝-d 1st；也就是说符号2和符号4发送的调制数据互为反向。符号2和符号4可以称为数据符号。
当采用符号10(即l s＝10)发送参考信号时，假设d 1st＝d 7，符号9发送的调制数据d left＝d 1st，符号11发送的调制数据为d right＝-d 1st；也就是说符号9和符号11发送的调制数据互为反向。
示例性的，第一调制数据和第二调制数据可以根据第一调制数集合D 1st中的调制数据确定。接着图5所示的举例，D 1st＝[d 2,d 7]，l s＝3时，第一调制数据和第二调制数据基于d 2确定，l s＝10时，第一调制数据和第二调制数据基于d 7确定。如图5所示，终端设备还在符号0、1、5、6、7、8、12、13上发送调制数据。终端设备在这些符号内发送的调 制数据可以包含在第二调制数据集合(表示为D 2st)中，第二调制数据集合中包括的调制数据为D 2st＝[d 0,d 1,d 3,d 4,d 5,d 6,d 8,d 9]。符号0上发送的第二调制数据为d 0，符号1、5、6、7、8、12、13上发送的第二调制数据依次分别为d 1，d 3，d 4，d 5，,d 6，d 8，d 9。
第一调制数据集合和第二调制数据集合可以包含在原始调制数据集合中。具体的，可以将原始调制数据分割成第一调制数据集合和第二调制数据集合。例如，图5所示中可以知道原始调制数据集合为[d 0,d 1,d 2,d 3,d 4,d 5,d 6,d 7,d 8,d 9]。分别承载[d 0,d 1,d 2,d 3,d 4,d 5,d 6,d 7,d 8,d 9]的符号也可以称为数据符号。原始调制数据集合可以由待发送比特经过调制得到。
图5中以一个时隙包括14个符号为例，一个时隙包括的符号数还可以是其它数值，例如如图6所示一个时隙可以包含15个符号。
应理解的是，图5或图6以一个时隙中两个符号发送参考信号为例，当然还可以采用一个时隙中的1个符号发送给参考信号，或者一个时隙中的多个符号发送给参考信号，比如3个。
示例2，以L rs为2，L data为1为例，连续两个第一符号发送参考信号，承载参考信号的两个第一符号的索引为l s和l s+1。在符号l s-1发送第一调制数据和符号l s+2上发送第二调制数据。其中在符号l s-1和符号l s+2上发送的调制数据由同一调制数据得到。每个调制数据包含1个BPSK调制数据，参考信号包含1个BPSK调制数据。
一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号之和为0，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据之和为0。也就是说，符号l s上发送的参考信号和符号l s+1上发送的参考信号互为反向，符号l s-1上发送的调制数据和符号l s+2上发送的调制数据互为反向。
比如，符号l s上发送的参考信号表示为r rs1，l s+1上发送的参考信号表示为r rs2，符号l s-1上发送的调制数据表示为d left，符号l s+2上发送的调制数据表示为d right。r rs1，r rs2，d left，d right数据长度均为1。符号l s上发送的参考信号和符号l s+1上发送的参考信号互为反向，符号l s-1上发送的调制数据和符号l s+2上发送的调制数据互为反向。也就是说r rs1＝-r rs2，d left＝-d right。
参见图7所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝6)发送参考信号。当采用符号6发送的参考信号为r 1(即r rs1＝r 1)，符号7发送的参考信号为-r 1(即r rs2＝-r 1)。符号5(即l s-1)发送的第一调制数据为d 5(即d left＝d 5)，符号8发送的调制数据为-d 5(即d right＝-d 5)。如图7所示，终端设备还在符号0、1、2、3、4、9、10、11、12、13上发送调制数据。在图7所示的举例中，D 1st＝[d 5]，D 2st＝[d 0,d 1,d 2,d 3,d 4,d 6,d 7,d 8,d 9,d 10]。
另一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号相同，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据相同。参见图8所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝3)发送参考信号。当采用符号6发送的参考信号为r 1(即r rs1＝r 1)，符号7发送的参考信号为r 1(即r rs2＝r 1)。符号5(即l s-1)发送的第一调制数据为d 5(即d left＝d 5)，符号8发送的调制数据为d 5(即d right＝d 5)。如图8所示，终端设备还分别在符号0、1、2、3、4、9、10、11、12、13上发送调制数据[d 0,d 1,d 2,d 3,d 4,d 6,d 7,d 8,d 9,d 10]。
示例3，以L rs为1，L data>1为例，第一符号发送参考信号，承载参考信号的第一符号的索引为l s。以L data＝2为例，在第二符号(符号l s-1)发送第一调制数据和第三符号(符号l s+1)上发送第二调制数据，在第四符号(比如符号l s-2)发送第三调制数据和第五符号(符号l s+2)上发送第四调制数据。其中在符号l s-1发送的第一调制数据和符号l s+1上发送的第二调制数据由同一调制数据得到，在符号l s-2发送的第三调制数据和符号l s+2上发送第四的调制数据由同一调制数据得到。每个调制数据包含1个BPSK调制数据，参考信号包含1个BPSK调制数据。
一种方式中，符号l s-1发送的第一调制数据和符号l s+1上发送的第二调制数据之和为0，在符号l s-2发送的第三调制数据和符号l s+2上发送第四的调制数据之和为0。例如，参见图9所示，以一个时隙内包含14个符号，符号索引从0至13为例。其中符号3和10发送参考信号，其他符号发送调制数据。当采用符号3(即l s＝3)发送参考信号时，符号2上发送的第一调制数据(即d 2)与符号4上发送的第二调制数据(即-d 2)之和为0。符号1上发送的第三调制数据(即d 1)与符号5上发送的第四调制数据(即-d 1)之和为0。当采用符号10(即l s＝10)发送参考信号时，符号9上发送的调制数据(即d 6)与符号11上发送的调制数据(即-d 6)之和为0，符号8上发送的调制数据(即d 5)与符号12上发送的调制数据(即-d 5)之和为0。
符号l s-1发送的第一调制数据和符号l s+1上发送的第二调制数据之和为0，在符号l s-2发送的第三调制数据和符号l s+2上发送第四的调制数据之和为0，另一种可能的方式如图10所示。以一个时隙内包含14个符号，符号索引从0至13为例。其中符号3和10发送参考信号，其他符号发送调制数据。当采用符号3(即l s＝3)发送参考信号时，符号2上发送的第一调制数为d 2，符号4上发送的第二调制数据为-d 2。符号1上发送的第三调制数据为-d 1，符号5上发送的第四调制数据为d 1。当采用符号10(即l s＝10)发送参考信号时，符号9上发送的调制数据为d 6，符号11上发送的调制数据为-d 6，符号8 上发送的调制数据为-d 5，符号12上发送的调制数据为d 5。
示例4，以L rs为1，L data＝3为例，在符号l s-1发送的调制数据和符号l s+1上发送的调制数据基于同一调制数据得到。在符号l s-2发送调制数据和符号l s+2上发送调制数据基于同一调制数据得到。在符号l s-3发送调制数据和第符号l s+3上发送调制数据基于同一调制数据得到。例如，参见图11所示，以所述符号l s-i上的调制数据和符号l s+L rs-1+i上的调制数据之和为0为例。图11中，一个时隙内包含14个符号，符号索引从0至13。其中符号3和10发送参考信号，其他符号发送调制数据。当采用符号3(即l s＝3)发送参考信号时，符号2上发送的第一调制数据(即d 2)与符号4上发送的第二调制数据(即-d 2)之和为0。符号1上发送的第三调制数据(即d 1)与符号5上发送的第四调制数据(即-d 1)之和为0。符号0上发送的第三调制数据(即d 0)与符号6上发送的第四调制数据(即-d 0)之和为0。当采用符号10(即l s＝10)发送参考信号时，符号9上发送的调制数据(即d 5)与符号11上发送的调制数据(即-d 5)之和为0，符号8上发送的调制数据(即d 4)与符号12上发送的调制数据(即-d 4)之和为0。符号7上发送的调制数据(即d 3)与符号13上发送的调制数据(即-d 3)之和为0。
示例5，以L rs为2，L data>1为例，连续两个第一符号发送参考信号，承载参考信号的两个第一符号的索引分别为l s和l s+1。以L data＝2为例，在第二符号(符号l s-1)发送第一调制数据和第三符号(符号l s+2)上发送第二调制数据，在第四符号(比如符号l s-2)发送第三调制数据和第五符号(符号l s+3)上发送第四调制数据。其中在符号l s-1发送的第一调制数据和符号l s+2上发送的第二调制数据由同一调制数据得到，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据由同一调制数据得到。每个调制数据包含1个BPSK调制数据，参考信号包含1个BPSK调制数据。
一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号之和为0，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据之和为0，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据之和为0。也就是说，符号l s上发送的参考信号和符号l s+1上发送的参考信号互为反向，符号l s-1上发送的调制数据和符号l s+2上发送的调制数据互为反向，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据互为反向。
参见图12所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝6)发送参考信号。符号6发送的参考信号为r 1，符号7发送的参考信号为-r 1。符 号5发送的调制数据为d 5，符号8发送的调制数据为-d 5，符号4发送的调制数据为d 4，符号9发送的调制数据为-d 4。如图12所示，终端设备还在符号0、1、2、3、10、11、12、13上分别发送调制数据d 0,d 1,d 2,d 3,d 6,d 7,d 8,d 9。
另一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号相同，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据相同，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据相同。参见图13所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝6)发送参考信号。符号6发送的参考信号为r 1，符号7发送的参考信号为r 1。符号5发送的调制数据为d 5，符号8发送的调制数据为d 5，符号4发送的调制数据为d 4，符号9发送的调制数据为d 4。
又一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号之和为0，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据相同，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据相同。参见图14(1)所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝6)发送参考信号。符号6发送的参考信号为r 1，符号7发送的参考信号为-r 1。符号5发送的调制数据为d 5，符号8发送的调制数据为d 5，符号4发送的调制数据为d 4，符号9发送的调制数据为d 4。
另一种方式中，符号l s上发送的参考信号和符号l s+1上发送的参考信号相同，符号l s-1上发送的第一调制数据和符号l s+2上发送的第二调制数据之和为0，在符号l s-2发送的第三调制数据和符号l s+3上发送第四调制数据之和为0。参见图14(2)所示，以一个时隙内包含14个符号，符号索引从0至13。其中符号6和符号7(即l s＝6)发送参考信号。符号6发送的参考信号为r 1，符号7发送的参考信号为r 1。符号5发送的调制数据为d 5，符号8发送的调制数据为-d 5，符号4发送的调制数据为-d 4，符号9发送的调制数据为d 4。
为了提高增强数据覆盖，本申请实施例中可以将待发送的数据重复发送多次。比如，用于承载待发送数据的资源可以称为资源单位(resource unit，RU)。为了提高调制性能，本申请实施例中RU包括的符号数量与所述RU上的数据的重复次数相关。待发送的数据以及待调制的参考信号经过调制得到在符号上发送的调制数据和参考信号。不同的重复次数下，RU包括的时隙数量可以不同，即包括的符号数量不同。每个时隙中的调制数据和参考信号可以按照图4-图14对应的任一实施例提供的方案发送或接收。需要说明的是，本申请实施例中符号的索引，可以是符号在一个时隙中的编号，或者可以是符号在一个RU中的编号。
可选地，配置的重复次数可以为K或者K N。K为正整数，K N为正整数。针对不同的终端设备配置的K可以相同也可以不同，针对同一个终端设备的不同的待发送数据配置的K可 以相同也可以不同。示例性地，K N可以根据N确定，比如通过表达式K N＝2 N确定K N，K N也可以是配置的，或者N值是配置的。针对不同的终端设备配置的N值可以相同也可以不同，针对同一终端设备的不同待发送数据配置的N值可以相同也可以不同。
可选的，RU上的数据的发送次数为K，RU包括的符号数目
Figure PCTCN2019114758-appb-000009
示例性地，
Figure PCTCN2019114758-appb-000010
例如，一个RU中包括的时隙数为
Figure PCTCN2019114758-appb-000011
一个时隙中包括的符号数量为
Figure PCTCN2019114758-appb-000012
再例如，一个RU中包括的时隙数为
Figure PCTCN2019114758-appb-000013
一个时隙中包括的符号数量为
Figure PCTCN2019114758-appb-000014
比如，RU上的数据的发送次数为1次时，即K＝1，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000015
再比如，配置的RU上的数据的发送次数大于1次，且为偶数次，即K>1,且K为偶数，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000016
一种情况中，在采用本申请实施例提供的发送参考信号和调制数据的方法情况下与不采用本申请实施例提供的方法(比如采用LTE系统窄带物联网(narrow band internet of things，NB-IoT)场景中single tone波形)情况下配置的发送次数均为K时，不采用本申请实施例提供的方案时，发送的次数变化的情况下，一个RU上的符号数量始终不变，即在K个RU上发送K次待发送的数据，K次发送的待发送的数据总共占用的符号数为
Figure PCTCN2019114758-appb-000017
在采用本申请实施例提供的方法情况下，比如配置的发送次数K＝1，则一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000018
实际发送时，发送一次RU上的数据，在一个RU上发送待发送的数据，示例性的可以参考图4-图14中的发送。再比如配置的发送次数K>1,且K为偶数，则实际发送时，为了提高解调性能，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000019
RU上的数据发送的次数为K/f(K)。例如，K>1,且K为偶数，f(K)＝2，RU上的数据实际发送的次数为K/2，即在K/2个RU上总共发送K/2次待发送的数据，K/2个RU包含的符号数目为
Figure PCTCN2019114758-appb-000020
另一种情况中，在采用本申请实施例提供的发送参考信号和调制数据的方法情况下与不采用本申请实施例提供的方法情况下配置的发送次数可以采用不同的配置方案。比如，不采用本申请实施例提供的方案时配置的发送次数为K，一个RU上的符号数量为
Figure PCTCN2019114758-appb-000021
实际发送次数为K。在采用本申请实施例提供的方案时，配置的发送次数为K′，一个RU包含的符号数量为
Figure PCTCN2019114758-appb-000022
比如，K′＝1时，f(K′)＝1,再比如，K′>1,f(K′)＝2。可选的，在采用本申请实施例提供的发送参考信号和调制数据的方法情况下配置的K′可以小于不采用本申请实施例提供的方法情况下配置的K，例如可以满足：K＝K′*f(K′)。
通过上述两个示例可以看出，可以通过降低待发送的数据的重复次数，增加RU内包含的符号数目来增加RU内发送的数据的数目，从而降低编码码率，提升解调数据的性能。
示例6，如图15所示一个RU内的数据进行了K/2次重复。图中假设重复次数为1时，一个RU包含1个时隙(即
Figure PCTCN2019114758-appb-000023
)，1个时隙内包含14个符号，发送的数据如图11所示。图15中所示配置的RU上的数据的重复发送的次数为K，K为偶数时，RU中包括的时隙数为2，每个时隙包含的符号数目为14，即一个RU包含的符号数目为28。此时，一个RU内可以发送的调制数据数目为12(从d 0至d 11)。如果采用将一个RU内的数据进行了K次重复，一个RU包含的时隙数目为1和一个时隙包含的符号数目为14的发送方式，则一个RU内可以发送的调制数据数目为6。相比这种方案，采用前面描述的一个RU内的数据进行了K/2次重复的方案，发送相同传输块大小(transport block size，TBS)的数据时，一个RU内发送数据的编码码率更低，解调性能更好。
本申请实施例中在符号上发送调制数据或者参考信号时，可以对调制数据或者参考信号进行滤波后再发送的。例如，滤波可以是时域滤波。具体的，可以对参考信号或调制数据进行频域资源映射、反傅里叶变换以及时域滤波处理后再发送。
以符号l上的调制数据或者参考信号为例。以调制数据是由待发送的比特经过BPSK调制后得到的调制数据为例。发送符号l上的BPSK数据(调制数据或者参考信号)时，符号l上的BPSK数据进行Pi/2相位旋转得到旋转数据，旋转数据包含1个数据。其中，符号l的1个BPSK数据可以是由待发送比特生成的调制数据或者参考信号。
例如，BPSK数据表示为b l，旋转数据表示为d l，则Pi/2相位旋转的一种实现方式为表达式(1)：
Figure PCTCN2019114758-appb-000024
旋转数据经过资源映射的方式映射在相应的频域资源上。具体的，旋转数据映射在一个子载波内，该子载波的位置(或者称为索引)表示为k。旋转数据经过资源映射后进行傅里叶反变换得到符号l的时域输出数据x l(t)。由于旋转数据包含1个数据，傅里叶变换的输出可以表示表达式(2)为：
Figure PCTCN2019114758-appb-000025
其中，
Figure PCTCN2019114758-appb-000026
为相位偏移，可以是预定义的，也可以由符号索引l确定。示例性地，
Figure PCTCN2019114758-appb-000027
时，无相位偏移。则表达式(2)可以变形为
Figure PCTCN2019114758-appb-000028
k offset为频率偏移因子，可以是预定义的固定值，例如k offset＝1/2。t offset为时域偏移因子，可以是预定义的固定值。其中0≤t<N×T s，N为正整数。T s为时间单位因子，T s可以是在终端设备上定义的，或者由网络设备通过信令配置给终端设备。Δf为子载波间隔。示例性地Δf＝1/(N×T s)。示例性的，N＝2018，T s＝1/(2018×15000)秒时， Δf＝15000赫兹(Hz)。
时域输出数据x l(t)经过时域滤波得到符号l的时域信号s l(t)，终端设备发送时域信号s l(t)。时域滤波器的系数表示为C(t)，滤波器的长度即持续时间为L×T。时域滤波操作可以采用多相网络(polyphase network，PPN)来实现。相应的，时域滤波可以采用表达式(3)实现：
Figure PCTCN2019114758-appb-000029
其中，T＝N×T s，T也是一个符号的持续时间。k1为大于或者等于0的整数，k2为大于等于k1的整数。可选地，k2-k1的取值可以与滤波器长度L×T中L的取值有关，比如：k2-k1＝L-1。offset为偏移值，offset可以为预定义的，也可以是由网络设备通过信令为终端配置的。可选的，offset可以为l×T或者
Figure PCTCN2019114758-appb-000030
表示向下取整。
基于此，时域信号s l(t)可以具体通过如下表达式(4)表示：
Figure PCTCN2019114758-appb-000031
由表达式(4)中可以确定，上述数据生成过程也可以等效为：将旋转数据d l采用滤波器C(t)进行时域滤波得到输出数据
Figure PCTCN2019114758-appb-000032
然后对输出数据
Figure PCTCN2019114758-appb-000033
采用如下所示的相位因子：
Figure PCTCN2019114758-appb-000034
进行频率搬移得到时域信号s l(t)。
基于此，当所述符号l的1个BPSK数据为网络设备已知的数据时，即BPSK数据为参考信号。网络设备可以利用该已知的参考信号进行信道估计和均衡等操作对待发送比特生成的BPSK数据进行解调。该参考信号可以由网络设备已知的比特数据经过BPSK调制得到。例如，已知的比特数据可以由伪随机序列(比如pseudo noise序列或Gold序列)生成，该伪随机序列的初始化值可以由小区标识或者终端设备的标识确定，因此网络设备能够确定由伪随机序列生成的比特数据。
相应于上述方法实施例给出的方法，本申请实施例还提供了相应的装置，包括用于执行上述实施例相应的模块。所述模块可以是软件，也可以是硬件，或者是软件和硬件结合。
图16给出了一种装置的结构示意图。所述装置1600可以是网络设备，也可以是终端设备，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
所述装置1600可以包括一个或多个处理器1601，所述处理器1601也可以称为处理单元，可以实现一定的控制功能。所述处理器1601可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端、终端芯片，DU或 CU等)进行控制，执行软件程序，处理软件程序的数据。
在一种可选的设计中，处理器1601也可以存有指令和/或数据1603，所述指令和/或数据1603可以被所述处理器运行，使得所述装置1600执行上述方法实施例中描述的方法。
在另一种可选的设计中，处理器1601中可以包括用于实现接收和发送功能的收发单元。例如该收发单元可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在又一种可能的设计中，装置1600可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选的，所述装置1600中可以包括一个或多个存储器1602，其上可以存有指令1604，所述指令可在所述处理器上被运行，使得所述装置1600执行上述方法实施例中描述的方法。可选的，所述存储器中还可以存储有数据。可选的，处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置，也可以集成在一起。例如，上述方法实施例中所描述的对应关系可以存储在存储器中，或者存储在处理器中。
可选的，所述装置1600还可以包括收发器1605和/或天线1606。所述处理器1601可以称为处理单元，对所述装置1600进行控制。所述收发器1605可以称为收发单元、收发机、收发电路、收发装置或收发模块等，用于实现收发功能。
可选的，本申请实施例中的装置1600可以用于执行本申请实施例中图4-图14对应的实施例描述的方法，也可以用于执行上述两个图或更多个图中描述的方法相互结合的方法。
本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(Bipolar Junction Transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的装置可以是网络设备或者终端设备,但本申请中描述的装置的范围并不限于此,而且装置的结构可以不受图16的限制。装置可以是独立的设备或者可以是较大设备的一部分。例如所述装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据和/或指令的存储部件；
(3)ASIC，例如调制解调器(MSM)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备、机器设备、家居设备、医疗设备、工业设备等等；
(6)其他等等。
图17提供了一种终端设备的结构示意图。该终端设备可适用于图1所示出的场景中。 为了便于说明，图17仅示出了终端设备的主要部件。如图17所示，终端设备1700包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解析并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行处理后得到射频信号并将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，该射频信号被进一步转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
为了便于说明，图17仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图17中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端设备1700的收发单元1711，将具有处理功能的处理器视为终端设备1700的处理单元1712。如图17所示，终端设备1700包括收发单元1711和处理单元1712。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1711中用于实现接收功能的器件视为接收单元，将收发单元1711中用于实现发送功能的器件视为发送单元，即收发单元1711包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。可选的，上述接收单元和发送单元可以是集成在一起的一个单元，也可以是各自独立的多个单元。上述接收单元和发送单元可以在一个地理位置，也可以分散在多个地理位置。
如图18所示,本申请又一实施例提供了一种装置1800。该装置可以是终端,也可以是终端的部件(例如，集成电路，芯片等等)。或者，该装置可以是网络设备，也可以是网络设备的部件(例如，集成电路，芯片等等)。该装置也可以是其他通信模块,用于实现本申请方法实施例中的方法。该装置1800可以包括:处理模块1802(或称为处理单元)。可选的，还可以包括收发模块1801(或称为收发单元)和存储模块1803(或称为存储单元)。
在一种可能的设计中，如图18中的一个或者多个模块可能由一个或者多个处理器来 实现，或者由一个或者多个处理器和存储器来实现；或者由一个或多个处理器和收发器实现；或者由一个或者多个处理器、存储器和收发器实现，本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置，也可以集成。
所述装置具备实现本申请实施例描述的终端的功能，比如，所述装置包括终端执行本申请实施例描述的终端涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。或者，所述装置具备实现本申请实施例描述的网络设备的功能，比如，所述装置包括所述网络设备执行本申请实施例描述的网络设备涉及步骤所对应的模块或单元或手段，所述功能或单元或手段可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
可选的，本申请实施例中的装置1800中各个模块可以用于执行本申请实施例中图4-图14对应的实施例中描述的方法，也可以用于执行上述两个图或更多个图中描述的方法相互结合的方法。
在一种可能的设计中，一种装置1800可包括：收发模块1801和处理模块1802。
一种实现方式中：
处理模块1802，用于获得参考信号、第一调制数据以及第二调制数据；
收发模块1801，用于在第一符号上发送参考信号；在第二符号发送第一调制数据，和在第三符号上发送第二调制数据；其中，所述第二符号和所述第三符号在时域上分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。
可选地，当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。
可选地，当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。
可选地，所述收发模块1801，还用于在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；所述第三调制数据和所述第四调制数据之和为0。
可选地，所述收发模块1801，还用于在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；当所述第一调制数据和所述第二调制数据相同时，所述第三调制数据和所述四调制数据相同。
可选地，所述第一符号、所述第二符号和所述第三符号包含在资源单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
可选地，所述第一符号上的参考信号用于解调所述第一调制数据和所述第二调制数据。
可选地，所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后再发送的。
另一种实现方式中：
收发模块1801，用于在第一符号上接收参考信号；在第二符号上接收第一调制数据，和在第三符号上接收第二调制数据；
处理模块1802，用于根据所述参考信号解调所述第一调制数据和所述第二调制数据。
其中，所述第二符号和所述第三符号在时域上分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。
可选地，当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。
可选地，当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。
可选地，所述收发模块1801，还用于在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻，所述第三调制数据和所述第四调制数据之和为0。
可选地，所述收发模块1801，还用于在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第三调制数据和所述四调制数据相同。
可选地，所述第一符号、所述第二符号和所述第三符号包含在资源单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
可选地，所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后获得的。
可以理解的是，本申请实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
本领域技术人员还可以理解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员对于相应的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
可以理解，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。
本申请所描述的方案可通过各种方式来实现。例如，这些技术可以用硬件、软件或者硬件结合的方式来实现。对于硬件实现，用于在通信装置(例如，基站，终端、网络实体、 或芯片)处执行这些技术的处理单元，可以实现在一个或多个通用处理器、DSP、数字信号处理器件、ASIC、可编程逻辑器件、FPGA、或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合中。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请还提供了一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
可以理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。可以理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实 施过程构成任何限定。
可以理解，在本申请中，“当…时”、“若”以及“如果”均指在某种客观情况下装置会做出相应的处理，并非是限定时间，且也不要求装置实现时一定要有判断的动作，也不意味着存在其它限定。
本申请中的“同时”可以理解为在相同的时间点，也可以理解为在一段时间段内，还可以理解为在同一个周期内。
本领域技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。本申请中的编号(也可被称为索引)的具体取值、数量的具体取值、以及位置仅作为示意的目的，并不是唯一的表示形式，也并不用来限制本申请实施例的范围。本申请中涉及的第一个、第二个等各种数字编号也仅为描述方便进行的区分，并不用来限制本申请实施例的范围。
本申请中对于使用单数表示的元素旨在用于表示“一个或多个”，而并非表示“一个且仅一个”，除非有特别说明。本申请中，在没有特别说明的情况下，“至少一个”旨在用于表示“一个或者多个”，“多个”旨在用于表示“两个或两个以上”。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A可以是单数或者复数，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
本文中术语“……中的至少一个”或“……中的至少一种”，表示所列出的各项的全部或任意组合，例如，“A、B和C中的至少一种”，可以表示：单独存在A，单独存在B，单独存在C，同时存在A和B，同时存在B和C，同时存在A、B和C这六种情况，其中A可以是单数或者复数，B可以是单数或者复数，C可以是单数或者复数。
可以理解，在本申请各实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以理解，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本领域普通技术人员可以理解，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
可以理解，本申请中描述的系统、装置和方法也可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本申请中各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以上所述的本申请实施方式并不构成对本申请保护范围的限定。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。

Claims (23)

  1. 一种信号发送方法，其特征在于，包括：
    在第一符号上发送参考信号；
    在第二符号发送第一调制数据，和在第三符号上发送第二调制数据；
    其中，所述第二符号和所述第三符号在时域上分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。
  2. 如权利要求1所述的方法，其特征在于：
    当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。
  3. 如权利要求1所述的方法，其特征在于：
    当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。
  4. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；所述第三调制数据和所述第四调制数据之和为0。
  5. 如权利要求3所述的方法，其特征在于，所述方法还包括：
    在第四符号上发送第三调制数据，和在第五符号上发送第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻；所述第三调制数据和所述四调制数据相同。
  6. 如权利要求1-5任一项所述的方法，其特征在于，所述第一符号、所述第二符号和所述第三符号包含在资源单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
  7. 如权利要求1-6任一项所述的方法，其特征在于，所述第一符号上的参考信号用于解调所述第一调制数据和所述第二调制数据。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后再发送的。
  9. 一种信号接收方法，其特征在于，包括：
    在第一符号上接收参考信号；
    在第二符号上接收第一调制数据，和在第三符号上接收第二调制数据；
    其中，所述第二符号和所述第三符号在时域上分别与所述第一符号相邻，且所述第二符号与所述第三符号不同，所述第一调制数据和所述第二调制数据之和为0，或者所述第一调制数据和所述第二调制数据相同。
  10. 如权利要求9所述的方法，其特征在于：
    当所述第一调制数据和所述第二调制数据之和为0时，时域上连续的两个第一符号用于承载参考信号，所述时域上连续的两个第一符号上分别承载的参考信号之和为0。
  11. 如权利要求9所述的方法，其特征在于：
    当所述第一调制数据和所述第二调制数据相同时，时域上连续的两个第一符号用于承载参考信号，所述时域连续的两个第一符号上分别承载的参考信号相同。
  12. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第五符号在时域上与所述第三符号相邻，所述第三调制数据和所述第四调制数据之和为0。
  13. 如权利要求11所述的方法，其特征在于，所述方法还包括：
    在第四符号上接收第三调制数据，和在第五符号上接收第四调制数据，所述第四符号在时域上与所述第二符号相邻，所述第三调制数据和所述四调制数据相同。
  14. 如权利要求9-13任一项所述的方法，其特征在于，所述第一符号、所述第二符号和所述第三符号包含在资源单位RU内，所述RU包括的符号数量与所述RU上的数据的重复次数相关，所述RU上的数据包括所述第一调制数据和所述第二调制数据。
  15. 如权利要求9-14任一项所述的方法，其特征在于，还包括：
    根据所述第一符号上的参考信号解调所述第一调制数据和所述第二调制数据。
  16. 如权利要求9-15任一项所述的方法，其特征在于，所述第一符号上的参考信号、所述第一调制数据和所述第二调制数据是经过滤波处理后获得的。
  17. 一种通信装置，其特征在于，所述装置用于执行权利要求1至8中任一项所述的方法，或者用于执行权利要求9至16中任一项所述的方法。
  18. 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，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至8中任一项所述的方法。
  19. 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，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如 权利要求9至16中任一项所述的方法。
  20. 一种计算机可读介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求1至8中任一项所述的方法，或者如权利要求9至16中任一项所述的方法。
  21. 一种计算机程序产品，所述计算机程序产品中包括计算机程序代码，其特征在于，当所述计算机程序代码在计算机上运行时，使得计算机实现权利要求1至8中任一项所述的方法或者实现权利要求9至16中任一项所述的方法。
  22. 一种芯片，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至8中任一项所述的方法或者如权利要求9至16中任一项所述的方法。
  23. 一种通信系统，其特征在于，包括：如权利要求18所述的装置，和/或，如权利要求19所述的装置。
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