WO2018137460A1 - 一种参考信号配置方法、基站和终端 - Google Patents

一种参考信号配置方法、基站和终端 Download PDF

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Publication number
WO2018137460A1
WO2018137460A1 PCT/CN2017/119087 CN2017119087W WO2018137460A1 WO 2018137460 A1 WO2018137460 A1 WO 2018137460A1 CN 2017119087 W CN2017119087 W CN 2017119087W WO 2018137460 A1 WO2018137460 A1 WO 2018137460A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
subcarrier
terminal
subcarriers
base station
Prior art date
Application number
PCT/CN2017/119087
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English (en)
French (fr)
Inventor
葛士斌
武露
毕晓艳
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17894029.2A priority Critical patent/EP3557847B1/en
Publication of WO2018137460A1 publication Critical patent/WO2018137460A1/zh
Priority to US16/522,324 priority patent/US20190349164A1/en

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    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a reference signal configuration method, a base station, and a terminal.
  • DFT-S-OFDM Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplexing
  • the PAPR of the DFT-S-OFDM waveform is not only high, but also Will affect the performance of CP-OFDM.
  • the present application provides a reference signal configuration method, a base station, and a terminal, by configuring a time-frequency resource of a reference signal of a terminal, so that a DFT-S-OFDM waveform terminal and a CP-OFDM multiplexed same time-frequency resource are used. Maintaining the performance of CP-OFDM allows DFT-S-OFDM to maintain a low PAPR.
  • the embodiment of the present invention provides a reference signal configuration method, including: generating, by a base station, resource configuration information, where the resource configuration information is used to indicate a resource unit occupied by a reference signal of the first terminal.
  • the time-frequency resources in which the resource unit is located include a plurality of consecutive symbols in the time domain and a plurality of consecutive sub-carriers in the frequency domain.
  • the reference signal is carried in at least one of the plurality of symbols.
  • the reference signal is carried in multiple subcarrier groups, and each of the plurality of subcarrier groups includes multiple subcarriers with consecutive frequencies, adjacent The subcarrier groups are separated by a preset number of subcarriers, the reference signal occupies one subcarrier in each subcarrier group, and the first terminal adopts a first waveform.
  • the base station sends the resource configuration information to the first terminal.
  • the first waveform is a discrete Fourier transform-Spread-Orthogonal Frequency Division Multiplexing (DFT) -S-OFDM) waveform.
  • DFT discrete Fourier transform-Spread-Orthogonal Frequency Division Multiplexing
  • each of the multiple subcarrier groups carrying the reference signal is used to carry the second terminal The reference signal, wherein the second terminal adopts a Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform, and the reference signal of the second terminal is a DMRS.
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplexing
  • each subcarrier group includes two consecutive subcarriers.
  • the terminal employing the first waveform in this way enables the first waveform to occupy only half of the subcarriers in one subcarrier group. This in turn causes the first waveform to maintain low PAPR characteristics.
  • the subcarrier occupied by the reference signal in each subcarrier group is the subcarrier The highest frequency subcarrier or the lowest subcarrier in the carrier group.
  • each subcarrier group includes three or more consecutive sub-carriers Carrier.
  • the reference signal is a demodulation reference signal DMRS.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group and a second identifier of the subcarrier occupied by the reference signal in the subcarrier group it carries.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, wherein an indicator in the OCC codebook sequence corresponding to one reference signal is used to indicate the first terminal Whether the reference signal is configured on a subcarrier in a subcarrier group carried by the reference signal.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, wherein an indicator in the OCC codebook sequence corresponding to one reference signal is used to indicate the first terminal Whether a reference signal is generated on a subcarrier in a subcarrier group carried by the reference signal.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, each indicator in the OCC codebook sequence is used to indicate that the first terminal associates the reference signal with the The result of the indicator product is mapped onto the subcarriers in the subcarrier group carrying the reference signal.
  • the resource configuration indication information includes the reference signal that is carried in the multiple subcarrier groups a first identifier of each subcarrier group, and an OCC codebook sequence corresponding to the reference signal, where the first terminal and the second terminal use different OCC codebooks.
  • an embodiment of the present invention provides a reference signal configuration method, including: a first terminal generates a reference signal, and the first terminal adopts a first waveform.
  • the first terminal sends a reference signal, and the time-frequency resource used for carrying the reference signal includes a plurality of consecutive symbols in the time domain and a plurality of consecutive subcarriers in the frequency domain, where the resource unit where the reference signal is located is carried in multiple symbols of the time-frequency resource.
  • At least one symbol, on the symbol carrying the reference signal, the reference signal is carried in a plurality of subcarrier groups, each of the plurality of subcarrier groups includes a plurality of consecutive subcarriers, and an interval between adjacent subcarrier groups is preset The number of subcarriers, the reference signal occupies one subcarrier in each subcarrier group.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • each of the multiple subcarrier groups carrying the reference signal is used to carry the second terminal
  • the reference signal wherein the second terminal adopts a cyclic prefix orthogonal frequency division multiplexing CP-OFDM waveform, and the reference signal of the second terminal is a DMRS.
  • each subcarrier group includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the highest frequency Subcarrier or lowest subcarrier.
  • each subcarrier group includes three or more consecutive sub-carriers Carrier.
  • the reference signal is a demodulation reference signal DMRS.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group and a second identifier of the subcarrier occupied by the reference signal in the subcarrier group it carries.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, wherein an indicator in the OCC codebook sequence corresponding to one reference signal is used to indicate the first terminal Whether the reference signal is configured on a subcarrier in a subcarrier group carried by the reference signal.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, wherein an indicator in the OCC codebook sequence corresponding to one reference signal is used to indicate the first terminal Whether a reference signal is generated on a subcarrier in a subcarrier group carried by the reference signal.
  • the resource configuration information includes: the reference signal is carried in each of the multiple subcarrier groups a first identifier of the carrier group, and an OCC codebook sequence corresponding to the reference signal, the OCC codebook sequence includes a plurality of indicators, each indicator in the OCC codebook sequence is used to indicate that the first terminal associates the reference signal with the The result of the indicator product is mapped onto the subcarriers in the subcarrier group carrying the reference signal.
  • the resource configuration indication information includes the reference signal that is carried in the multiple subcarrier groups a first identifier of each subcarrier group, and an OCC codebook sequence corresponding to the reference signal, where the first terminal and the second terminal adopt different OCC codebook sequences.
  • an embodiment of the present invention provides a base station, including: a generating unit, configured to generate resource configuration information, where the resource configuration information is used to indicate a resource unit occupied by a reference signal of the first terminal.
  • the time-frequency resource in which the resource unit is located includes a plurality of consecutive symbols in the time domain and a plurality of consecutive sub-carriers in the frequency domain, and the reference signal is carried in at least one of the plurality of symbols, where the reference signal is carried
  • the reference signal is carried in a plurality of subcarrier groups, each of the plurality of subcarrier groups includes a plurality of subcarriers that are consecutive in frequency, and a predetermined number of subcarriers are spaced between adjacent subcarrier groups,
  • the signal occupies one subcarrier in each subcarrier group, and the first terminal adopts a first waveform.
  • a sending unit configured to send resource configuration information to the first terminal.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • each of the multiple subcarrier groups carrying the reference signal is used to carry the second The reference signal of the terminal, wherein the second terminal adopts a cyclic prefix orthogonal frequency division multiplexing CP-OFDM waveform, and the reference signal of the second terminal is a DMRS.
  • each subcarrier group includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the subcarrier The highest frequency subcarrier or the lowest subcarrier in the carrier group.
  • each subcarrier group includes three or more consecutive sub-carriers Carrier.
  • the reference signal is a demodulation reference signal DMRS.
  • an embodiment of the present invention provides a terminal, including: a generating unit, configured to generate a reference signal, where the terminal adopts a first waveform.
  • a sending unit configured to send a reference signal, where time-frequency resources for carrying the reference signal include multiple symbols consecutive in the time domain and multiple consecutive subcarriers in the frequency domain, where the resource unit where the reference signal is located is carried by multiple time-frequency resources At least one symbol in the symbol, on the symbol carrying the reference signal, the reference signal is carried in a plurality of subcarrier groups, each of the plurality of subcarrier groups includes a plurality of consecutive subcarriers, and an interval between adjacent subcarrier groups A preset number of subcarriers, the reference signal occupies one subcarrier in each subcarrier group.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • the reference of each of the multiple subcarriers occupied by the reference signal is used to carry the reference of the second terminal.
  • each subcarrier group includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the subcarrier The highest frequency subcarrier or the lowest subcarrier in the carrier group.
  • each subcarrier group includes three or more consecutive sub-carriers Carrier.
  • an embodiment of the present invention provides a base station, including a memory, a processor, a bus, and a transceiver, wherein the memory is configured to store code and data, the processor and the memory are connected by a bus, and the processor runs the code in the memory.
  • the plurality of subcarriers, the reference signal is carried in at least one of the plurality of symbols, and the reference signal is carried on a plurality of subcarrier groups, the plurality of subcarrier groups on the symbol carrying the reference signal
  • Each of the subcarrier groups includes a plurality of subcarriers that are contiguous in frequency, and the adjacent subcarrier groups are separated by a predetermined number of subcarriers, and the reference signal occupies one subcarrier in each of the subcarrier groups, the first terminal
  • the first waveform is used.
  • a transceiver configured to send the resource configuration information to the first terminal.
  • an embodiment of the present invention provides a terminal, including a memory, a processor, a bus, and a transceiver, wherein the memory stores code and data, the processor and the memory are connected by a bus, and the processor runs the code in the memory to execute : generating a reference signal, the first terminal adopting a first waveform.
  • the transceiver is configured to: send a reference signal, where the time-frequency resource for carrying the reference signal includes multiple symbols consecutive in the time domain and multiple subcarriers consecutive in the frequency domain, where the resource unit where the reference signal is located is carried by the At least one of a plurality of symbols of the time-frequency resource, the reference signal is carried on a plurality of subcarrier groups, and each of the plurality of subcarrier groups includes a plurality of consecutive subcarriers. A predetermined number of subcarriers are spaced apart between adjacent subcarrier groups, and the reference signal occupies one subcarrier in each subcarrier group.
  • an embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores instructions, when the computer readable storage medium is run on a computer, causing the base station to perform the first aspect to the first aspect.
  • an embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores instructions, when the computer readable storage medium is run on a computer, causing the terminal to perform the second aspect to the second aspect.
  • an embodiment of the present invention provides a computer program product, including instructions, when the base station is configured to perform a reference signal configuration described in any one of the foregoing first aspect to the first aspect. Method of method.
  • an embodiment of the present invention provides a computer program product, including an instruction, when the terminal is executed on the terminal, causing the terminal to perform the reference signal configuration described in any one of the foregoing second aspect to the second aspect.
  • an embodiment of the present invention provides a reference signal configuration method, including:
  • the base station Determining, by the base station, a resource unit occupied by the reference signal of the first terminal, where the time-frequency resource of the resource unit includes a plurality of consecutive symbols in the time domain and a plurality of consecutive sub-carriers in the frequency domain, where the reference signal is carried in the At least one of the plurality of symbols, on the symbol carrying the reference signal, the reference signal is carried in a plurality of subcarrier groups, each of the plurality of subcarrier groups comprising a plurality of subcarriers having a continuous frequency, Between adjacent subcarrier groups, a predetermined number of subcarriers are separated, the reference signal occupies one subcarrier in each subcarrier group, and the first terminal adopts a first waveform; the base station passes the resource unit Obtaining the reference signal.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • each of the multiple subcarrier groups carrying the reference signal is used to carry a reference signal of the second terminal, where the second terminal adopts a cyclic prefix orthogonal frequency division.
  • the CP-OFDM waveform is multiplexed, and the reference signal of the second terminal is a DMRS.
  • each of the subcarrier groups includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the highest frequency subcarrier or the lowest subcarrier in the subcarrier group.
  • each of the subcarrier groups includes three or more consecutive subcarriers.
  • the reference signal is a demodulation reference signal DMRS.
  • the embodiment of the present invention provides a base station, including: a determining module, configured to determine a resource unit occupied by a reference signal of the first terminal, where the time-frequency resource where the resource unit is located includes a continuous multiple in the time domain. And a plurality of subcarriers that are consecutive in the frequency domain, the reference signal is carried in at least one of the plurality of symbols, and the reference signal is carried on the plurality of subcarrier groups on the symbol carrying the reference signal.
  • Each of the plurality of subcarrier groups includes a plurality of subcarriers that are consecutive in frequency, and the adjacent subcarrier groups are separated by a predetermined number of subcarriers, and the reference signal occupies one subcarrier in each subcarrier group.
  • a carrier, the first terminal adopting a first waveform
  • an acquiring module configured to acquire the reference signal by using the resource unit.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • each of the multiple subcarrier groups carrying the reference signal is used to carry a reference signal of the second terminal, where the second terminal adopts a cyclic prefix orthogonal frequency division.
  • the CP-OFDM waveform is multiplexed, and the reference signal of the second terminal is a DMRS.
  • each of the subcarrier groups includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the highest frequency subcarrier or the lowest subcarrier in the subcarrier group.
  • each of the subcarrier groups includes three or more consecutive subcarriers.
  • the reference signal is a demodulation reference signal DMRS.
  • a thirteenth aspect, the embodiment of the present invention provides a base station, including: a processor, configured to:
  • the time-frequency resource where the resource unit is located includes a plurality of consecutive symbols in the time domain and a plurality of consecutive sub-carriers in the frequency domain
  • the reference signal is carried in the multiple At least one of the symbols, on the symbol carrying the reference signal, the reference signal is carried in a plurality of subcarrier groups, each of the plurality of subcarrier groups comprising a plurality of subcarriers having a continuous frequency, phase
  • the neighboring subcarrier groups are separated by a preset number of subcarriers, the reference signal occupies one subcarrier in each subcarrier group, the first terminal adopts a first waveform, and the reference is obtained by using the resource unit. signal.
  • the first waveform is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • each of the multiple subcarrier groups carrying the reference signal is used to carry a reference signal of the second terminal, where the second terminal adopts a cyclic prefix orthogonal frequency division.
  • the CP-OFDM waveform is multiplexed, and the reference signal of the second terminal is a DMRS.
  • each of the subcarrier groups includes two consecutive subcarriers.
  • the subcarrier occupied by the reference signal in each subcarrier group is the highest frequency subcarrier or the lowest subcarrier in the subcarrier group.
  • each of the subcarrier groups includes three or more consecutive subcarriers.
  • the reference signal is a demodulation reference signal DMRS.
  • the embodiment of the present invention further provides a communication system, which includes the base station described in any one of the possible implementations of the third aspect to the third aspect, and any possible implementation manner of the fourth aspect or the fourth aspect.
  • any of the computer-readable storage media provided above is used to perform the method corresponding to the base station or the terminal provided above. Therefore, the beneficial effects that can be achieved can be referred to the corresponding method provided above. The beneficial effects in this are not repeated here.
  • the reference signal configuration method provided by the embodiment of the present invention when the first terminal sends the reference signal, the first terminal sends the reference signal, and the time-frequency resource used for carrying the reference signal includes continuous time domain. a plurality of symbols and a plurality of consecutive subcarriers in the frequency domain, wherein the resource unit in which the reference signal is located occupies at least one of the plurality of symbols of the time-frequency resource, and the reference signal is carried in the plurality of subcarrier groups on the symbol occupied by the reference signal
  • Each of the plurality of subcarrier groups includes a plurality of consecutive subcarriers, and the adjacent subcarrier groups are separated by a predetermined number of subcarriers, and the reference signal occupies one subcarrier in each subcarrier group. Since the reference signal is carried on multiple subcarriers and only one subcarrier is occupied in one subcarrier group, embodiments of the present invention can maintain the characteristics of DFT-S-OFDM low PAPR.
  • any of the readable media provided above is used to perform the corresponding method provided above, and therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods provided above. I will not repeat them here.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2a is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 2b is a schematic structural diagram of a baseband subsystem of a base station according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a reference signal configuration method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a resource unit according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram 1 of a configuration structure of a reference signal according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram 2 of a configuration structure of a reference signal according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram 3 of a reference signal according to an embodiment of the present disclosure.
  • FIG. 8a is a schematic diagram 4 of a configuration structure of a reference signal according to an embodiment of the present invention.
  • FIG. 8b is a schematic diagram 5 of a configuration structure of a reference signal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram 6 of a reference signal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the words “exemplary” or “such as” are used to mean an example, illustration, or illustration. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the invention should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words “exemplary” or “such as” is intended to present the concepts in a particular manner.
  • the words “first”, “second” and the like are used to distinguish the same or similar items whose functions and functions are substantially the same, in the field.
  • the skilled person will understand that the words “first”, “second” and the like do not limit the number and order of execution.
  • the technical solution provided by the embodiments of the present invention can be applied to a wireless communication system supporting two waveforms, for example, a wireless communication network supporting DFT-S-OFDM waveforms and CP-OFDM waveforms, as shown in FIG.
  • a base station may be a device that communicates with a user equipment (User Equipment, UE) or other communication station, such as a relay station, and the base station may provide communication coverage of a specific physical area.
  • UE User Equipment
  • the UE may be distributed throughout the wireless network, and each UE may be static or mobile.
  • the UE may be a terminal, a mobile station, a subscriber unit, a station, or the like.
  • the UE may be a cellular phone, a personal digital assistant (PDA), a wireless modem (Modem), a wireless communication device, a handheld, a laptop computer, a cordless phone (cordless) Phone), wireless local loop (WLL) station, etc.
  • PDA personal digital assistant
  • Modem wireless modem
  • WLL wireless local loop
  • the UE When the UE is applied to the M2M mode communication, the UE may be referred to as an M2M terminal, and may specifically be a smart meter, a smart home appliance, or the like that supports M2M communication.
  • the base station includes a baseband subsystem, a medium radio frequency subsystem, an antenna feed subsystem, and some supporting structures (for example, a whole subsystem), wherein the baseband subsystem is used to implement the operation of the entire base station.
  • EPC Evolved Packet Core
  • LTE physical layer MAC (Medium Access Control) layer
  • the middle RF subsystem realizes conversion between baseband signal, intermediate frequency signal and radio frequency signal, realizes demodulation of LTE wireless receiving signal and modulation and power amplification of transmitting signal
  • antenna feeder subsystem includes antenna connected to base station radio frequency module The feeder and the feeder and the feeder of the GRS receiving card are used for receiving and transmitting the wireless air interface signal.
  • the whole subsystem is a supporting part of the baseband subsystem and the intermediate frequency subsystem, and provides structural, power supply and environmental monitoring functions.
  • the baseband subsystem may be as shown in FIG. 2b: for example, the mobile phone accesses the Internet through the base station to access the core network (MME/S-GW), and accesses the Internet through the core network, where the data of the Internet passes through the core network and the base station.
  • the interface is transmitted to the baseband part, and the baseband part performs PDCP, RLC, MAC layer, coding, modulation, etc., and is sent to the radio frequency part for transmission to the terminal.
  • the baseband and the radio frequency can be connected through the CPRI interface; in addition, the radio frequency part can be pulled far by the optical fiber, for example, the remote RRU.
  • the baseband of each step of the configuration method in the embodiment of the present invention is implemented by radio frequency, and the receiving and transmitting step is implemented by an antenna (for example, an air interface).
  • the interface between the terminal and the base station involved in the implementation of the present invention may be understood as an air interface for communication between the terminal and the base station, or may also be referred to as a Uu interface.
  • the Reference Signal is also known as a Pilot or training sequence.
  • the reference signal is known.
  • the reference signal has multiple uses, and the reference signal can be divided into multiple types based on specific purposes, such as a reference signal for obtaining channel state information reference (CSI), and a reference signal for demodulating the received signal. And reference signals for beam management.
  • certain reference signals can serve multiple purposes.
  • the usage of the reference signal and the configuration of the resources carrying the reference signal may also be different for different purposes.
  • the reference signal in the embodiment of the present invention is a Demodulation Reference Signal (DMRS).
  • DMRS Demodulation Reference Signal
  • the DMRS can perform channel estimation on the precoded channel (also referred to as an equivalent channel), and demodulate the data based on the channel estimation result, so the DMRS Used to demodulate the received signal.
  • FIG. 3 shows a reference signal configuration method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • the base station generates resource configuration information, where the resource configuration information is used to indicate a resource unit occupied by the reference signal of the first terminal, where the time-frequency resource where the resource unit is located includes multiple consecutive symbols in the time domain and consecutive in the frequency domain.
  • a plurality of subcarriers where the reference signal is carried in at least one of the plurality of symbols, where the reference signal is carried on a plurality of subcarrier groups, in the plurality of subcarrier groups, on the symbol carrying the reference signal
  • Each subcarrier group includes a plurality of subcarriers that are contiguous in frequency, and a predetermined number of subcarriers are separated between adjacent subcarrier groups, the reference signal occupies one subcarrier in each subcarrier group, and the first terminal adopts a first Waveform.
  • the resource unit includes at least one of the plurality of symbols in the time domain and one subcarrier in each of the plurality of subcarrier groups in the frequency domain.
  • the time-frequency resources described above may be similar to RBs or RB pairs in LTE.
  • the first waveform in the embodiment of the present invention is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM waveform.
  • the base station In S101, the base station generates resource configuration information.
  • the resource configuration information is used to indicate a resource unit occupied by the reference signal of the first terminal.
  • 4 is an exemplary schematic diagram of a resource distribution pattern 100 employed by a base station to indicate a reference signal for a first terminal.
  • the smallest resource granularity may be one OFDM symbol (the uplink is an SC-FDMA symbol. hereinafter collectively referred to as an OFDM symbol).
  • the smallest resource granularity is one subcarrier.
  • a time-frequency resource unit consisting of one OFDM symbol and one subcarrier is a Resource Element (RE).
  • the RE is the basic unit. As shown in FIG.
  • the resource elements (Resource Element, RE) occupied by the reference signal R corresponding to one antenna port are distributedly distributed in the two resource blocks 104 and 106 included in the resource block (102).
  • the resource block pair 102 includes a plurality of symbols consecutive in the time domain and a plurality of consecutive subcarriers in the frequency domain. And within the resource block pair 102, the location of the resource unit carrying the reference signal is fixed.
  • the entire resource block pair 102 can be channel estimated by means of a reference signal carried on the above resource unit in combination with a specific interpolation method. It can be seen that the resource unit includes at least one of the plurality of symbols in the time domain and one subcarrier in each of the plurality of subcarrier groups in the frequency domain.
  • the time-frequency resources described above may be similar to RBs or RB pairs in LTE.
  • the embodiment of the present invention provides a resource unit, which can be used as a basic unit for scheduling resource allocation, and can also be used to describe a plurality of reference signal arrangement manners.
  • the resource unit provided by the embodiment of the present invention will be described below with reference to FIG.
  • FIG. 4 is a schematic structural diagram of a resource unit 100 according to an embodiment of the present invention.
  • a Resource Unit 100 occupies a plurality of consecutive subcarriers in a frequency domain and a plurality of consecutive symbols (OFDM symbols) in a time domain.
  • the smallest resource unit in a resource unit is a Resource Element (RE), and each resource granule occupies one subcarrier in the frequency domain and one symbol in the time domain.
  • Resource unit 100 typically includes a plurality of REs.
  • the reference signal of the first terminal is carried by at least one of the plurality of symbols.
  • the reference signal is carried in multiple subcarrier groups, such as the first subcarrier group, the second subcarrier group, and the third subcarrier group in FIG.
  • the number of subcarrier groups may be one group or multiple groups. It is not limited to the three groups listed here.
  • Each of the plurality of subcarrier groups includes a plurality of consecutive subcarriers.
  • the first subcarrier group includes a first subcarrier and a second subcarrier.
  • only one subcarrier group may include two subcarriers. It can be understood that, in actual use, one subcarrier group may further include three or more subcarriers. .
  • a predetermined number of subcarriers are spaced between adjacent subcarrier groups.
  • the reference signal occupies one subcarrier in each subcarrier group. If one subcarrier group contains two subcarriers, the reference signal occupies half of the resources in the subcarrier group.
  • the reference signal occupies one third or less of the resources of the subcarrier group.
  • the subcarriers occupied by the reference signal may also be two or more, as long as the subcarriers occupied by the reference signal are only subcarriers.
  • the reference signal is all possible implementations.
  • step S102 After the base station determines the resource unit occupied by the first terminal reference signal, the base station sends the resource configuration information to the terminal.
  • the base station may send resource configuration information to the terminal by using downlink control information (DCI).
  • DCI downlink control information
  • step S103 and step S104 the first terminal receives the resource configuration information sent by the base station and saves the information. Then, in step S104 and step S105, the first terminal generates a reference signal and transmits the reference signal to the base station according to the resource unit indicated by the saved resource configuration information.
  • the embodiment of the present invention further includes:
  • Step S106 The base station receives the reference signal sent by the first terminal.
  • a terminal can only use one waveform, that is, DFT-S-OFDM waveform or CP-OFDM waveform.
  • one terminal can adopt DFT-S-OFDM waveform
  • the other terminal can adopt CP- OFDM waveform.
  • This enables MU between the first terminal employing the DFT-S-OFDM waveform and the second terminal employing the CP-OFDM waveform at the same time, since DFT-S-OFDM is used for the edge user equipment in the cell, CP-OFDM It is used for central user equipment in a cell. Therefore, CP-OFDM can use the time-frequency resources occupied by DFT-S-OFDM, thereby improving CP-OFDM performance.
  • the subcarrier occupied by the reference signal in each subcarrier group is the highest or lowest frequency subcarrier.
  • the reference signal may be determined to be placed on the highest frequency subcarrier in each subcarrier group or on the lowest frequency subcarrier according to parameters such as channel quality.
  • the reference signal of the first terminal is multiplexed on the subcarrier by an orthogonal code of the reference signal
  • the reference signal of the second terminal is multiplexed on the subcarrier by an orthogonal code of the reference signal, that is, each terminal
  • the reference signals are multiplexed on the subcarriers of the subcarrier group by respective orthogonal codes.
  • the orthogonal code may be an Orthogonal Cover Code (OCC).
  • the following includes each subcarrier group including two subcarriers, the first waveform is a DFT-S-OFDM waveform, and the reference signal of the second terminal using the CP-OFDM waveform is carried on the subcarrier group carrying the DMRS, and the base station is introduced.
  • the resource configuration information in the embodiment of the present invention includes a first identifier of each subcarrier group carried by the reference signal in the plurality of subcarrier groups, and a second identifier of the subcarrier occupied by the reference carrier in the subcarrier group carried by the reference signal.
  • the subcarrier group carrying the reference signal in the embodiment of the present invention is further used to carry the reference signal of the terminal using the CP-OFDM waveform
  • the base station sends the configuration information to the terminal that carries the reference signal that uses the CP-OFDM waveform
  • the configuration information may only include the identity of the subcarrier group in which the reference signal is located.
  • the first identifier is used to uniquely identify the subcarrier group
  • the second identifier is used to uniquely identify the subcarrier.
  • the first identification and the second identification may be numbered.
  • each sub-carrier group may be numbered, for example, the first sub-carrier group is 10, the second sub-carrier group is 20, and so on, and the details are not described herein again.
  • the foregoing is only an example to indicate that the identifier of each subcarrier group is a number, which can be set as needed during actual use.
  • the number of the first subcarrier in the first subcarrier group may be 101.
  • the configuration indication information sent by the base station to the second terminal adopting the CP-OFDM waveform is only used to indicate which subcarrier group the reference signal is carried on.
  • the second terminal adopting the CP-OFDM waveform After receiving the configuration indication information, the second terminal adopting the CP-OFDM waveform transmits the reference signal on the subcarrier group indicated by the configuration indication information. That is, the reference signals X1, X2, X3, X4, X5, and X6 using the CP-OFDM waveform as shown in FIG. 5 are configured on each of the first subcarrier group, the second subcarrier group, and the third subcarrier group. .
  • the reference signals include S1, S2, and S3.
  • the resource configuration information is used to indicate that the reference signal S1 is carried in the first subcarrier group, and the reference signal S1 occupies the first subcarrier in the first subcarrier group, and the reference signal S2 is carried in the second subcarrier group, and the reference signal S2 is carried in the second subcarrier group, and the The reference signal S2 occupies the first subcarrier in the second subcarrier group, the reference signal S3 is carried in the third subcarrier group, and the reference signal S3 occupies the first subcarrier in the third subcarrier group.
  • the reference signal S1 is mapped on the first subcarrier of the first subcarrier group, and the reference signal S2 is mapped to the first subcarrier of the second subcarrier group, and the reference is made.
  • Signal S3 is mapped onto the first subcarrier of the third subcarrier group.
  • the resource configuration information in the embodiment of the present invention includes a first identifier that is carried by the reference signal in each of the plurality of subcarrier groups, and an OCC codebook sequence corresponding to the reference signal.
  • the OCC codebook sequence includes a plurality of indicators, each of the plurality of indicators corresponding to one of the subcarrier groups carrying the reference signal.
  • the sequence of the OCC codebook corresponding to the reference signal is used to indicate to the first terminal, which subframe of the subcarrier group carried by the reference signal is configured by the first terminal. That is, it is used to indicate the specific location of the reference signal in the subcarrier group.
  • the number of indicators in the OCC codebook sequence may be determined according to the number of subcarriers in the subcarrier group carried by the reference signal corresponding to the OCC codebook.
  • the OCC codebook sequence in the embodiment of the present invention includes a first indicator and a second indicator, for example, the first indicator is “1" and the second indicator is "0".
  • the terminal corresponds to the OCC code according to the reference signal.
  • the processing of the reference signal is also different, therefore, the following will be introduced in conjunction with the corresponding situation:
  • the first indicator in the OCC codebook sequence is used to indicate that the reference signal is mapped to a subcarrier corresponding to the first indicator
  • the second indicator in the OCC codebook sequence is used for And indicating that the reference signal is not mapped to the subcarrier corresponding to the second indicator
  • the resource configuration information is used to indicate that the reference signal S1, the reference signal S2, and the reference signal S3 are respectively carried in the first subcarrier group and the second sub a carrier group and a third subcarrier group
  • the codebook corresponding to the reference signal S1, the reference signal S2, and the reference signal S3 are both [1, 0], if the first subcarrier of the reference signal S1 in the first subcarrier group If the corresponding indicator is the first indicator 1, the first terminal maps the reference signal S1 to the first subcarrier, and if the indicator corresponding to the second subcarrier in the first subcarrier group is 0, the A terminal does not map the reference signal S2 to the second subcarrier.
  • the first terminal maps the reference signal S2 to the first subcarrier in the second subcarrier group, if the second subcarrier group The second subcarrier corresponds to the indicator 0, and the terminal does not map the reference signal S2 to the second subcarrier in the second subcarrier group.
  • the first subcarrier in the third subcarrier group corresponds to the indicator 1
  • the first terminal maps the reference signal S3 to the first subcarrier in the third subcarrier group, if the third subcarrier group The second subcarrier corresponds to the indicator 0, and the first terminal does not map the reference signal S3 to the second subcarrier in the third subcarrier group.
  • the distribution of the reference signal on the resource unit can be as shown in FIG. 6.
  • the first indicator in the OCC codebook sequence is used to indicate that the first terminal generates a reference signal on a certain subcarrier of the subcarrier group carried by the reference signal
  • the second indicator in the OCC codebook sequence And configured to indicate that the first terminal does not generate a reference signal on a certain subcarrier in the subcarrier group that carries the reference signal.
  • the first terminal generates a reference signal on a subcarrier on the subcarrier group carrying the reference signal, and carries the reference signal.
  • the reference signal is not generated on another subcarrier on the subcarrier group, that is, the reference signal sequence generated on one subcarrier group carrying the reference signal is [S1, 0].
  • the reference signal sequence generated on the subcarrier group of the reference signal S3 is [S1, 0, S2, 0, S3, 0...].
  • the first terminal configures the reference signal on the subcarriers in the subcarrier group carrying the reference signal according to the generated reference signal sequence, as shown in FIG. 7.
  • the first terminal if the codebook corresponding to the reference signal is [0, 1], that is, the codebook corresponding to the reference signal S1, the reference signal S2, and the reference signal S3 is [0, 1], the first terminal generates The reference signal sequence is [0, S1, 0, S2, 0, S3...]. Finally, the first terminal places the reference signal on the subcarrier carrying the reference signal according to the sequence corresponding to the reference signal [0, S1, 0, S2, 0, S3...].
  • each indicator in the OCC codebook sequence in the embodiment of the present invention is used to indicate that a result obtained by the first terminal multiplying the reference signal by the indicator is mapped to a certain one of the subcarrier groups carrying the reference signal. On the carrier.
  • the reference signal sequence generated by the first terminal is [S1, S1, S2, S2, S3, S3, ...]
  • the reference signal S1 is carried on the first subcarrier group
  • the reference signal S2 is carried in the second On the subcarrier group
  • the reference signal S3 is carried on the third subcarrier group.
  • the first terminal multiplies each reference signal in the reference signal sequence by an indicator in an OCC codebook sequence after generating the reference signal sequence, and indicates each reference signal in the codebook sequence corresponding to the reference signal
  • the result of the multiplication is mapped on one subcarrier as shown in Figure 8a.
  • the reference signal S1 is multiplied by the indicator 1 of the OCC codebook, and finally the reference signal S1 is carried on the first subcarrier in the first subcarrier group.
  • the reference signal S1 is multiplied by the indicator 0 in the OCC codebook, and finally the reference signal S1 is not carried on the second subcarrier of the first subcarrier group.
  • the reference signal S2 is multiplied by the indicator 1 of the OCC codebook, and the final reference signal S2 is carried on the first subcarrier in the second subcarrier group. Multiplying the reference signal S2 by the indicator 0 in the OCC codebook ultimately does not carry the reference signal S2 on the second subcarrier of the second subcarrier group.
  • the reference signal S3 is multiplied by the indicator 1 of the OCC codebook, and the final reference signal S3 is carried on the first subcarrier in the third subcarrier group.
  • the reference signal S3 is multiplied by the indicator 0 in the OCC codebook, and finally the reference signal S3 is not carried on the second subcarrier of the third subcarrier group.
  • the reference signal sequence generated by the first terminal is [S1, S2, S3, S4, S5, S6, ...]
  • the reference signal S1 and the reference signal S2 are carried on the first subcarrier group
  • the reference signal S3 And the reference signal S4 is carried on the second subcarrier group
  • the reference signal S5 and the reference signal S6 are carried on the third subcarrier group.
  • the first terminal will reference each of the reference signal sequences [S1, S2, S3, S4, S5, S6, ...] Multiplying an indicator in an OCC codebook sequence and mapping the result of multiplying each reference signal by an indicator in the codebook sequence corresponding to the reference signal on one subcarrier.
  • the reference signal S1 is multiplied by the indicator 1 of the OCC codebook, and the final reference signal S1 is carried on the first subcarrier in the first subcarrier group.
  • Multiplying the reference signal S2 by the indicator 0 in the OCC codebook ultimately does not carry the reference signal S2 on the second subcarrier in the first subcarrier group.
  • the reference signal S3 is multiplied by the indicator 1 of the OCC codebook, and the final reference signal S3 is carried on the first subcarrier in the second subcarrier group.
  • the reference signal S4 is multiplied by the indicator 0 in the OCC codebook, and finally the reference signal S4 is not carried on the second subcarrier of the second subcarrier group.
  • the reference signal S5 is multiplied by the indicator 1 of the OCC codebook, and the final reference signal S5 is carried on the first subcarrier in the third subcarrier group.
  • the reference signal S6 is multiplied by the indicator 0 in the OCC codebook, and finally the reference signal S6 is not carried on the second subcarrier of the third subcarrier group.
  • the resource configuration indication information includes a first identifier of each subcarrier group carried by the reference signal in the plurality of subcarrier groups, and an OCC codebook sequence corresponding to the reference signal, where the first terminal and the second terminal Use different OCC codebooks.
  • the OCC codebook used by the first terminal is [1, 0]
  • the OCC codebook [1, 1] used by the second terminal As shown in FIG. 9, if the reference signal sequence generated by the first terminal is [S1, S2, S3, S4, S5, S6, ...], the reference signal sequence generated by the first terminal is [X1, X2, X3, X4. , X5, X6 «].
  • the reference signal S1 is multiplied by the indicator 1 in the OCC codebook, the reference signal S1 is carried on the first subcarrier in the first subcarrier group, and the reference signal S2 and the indication in the OCC codebook After multiplying by 0, the reference signal S2 is not carried on the second subcarrier in the first subcarrier group.
  • the reference signal X1 is multiplied by the indicator 1 in the OCC codebook, the reference signal X1 is carried on the first subcarrier in the first subcarrier group, the reference signal X2 and the indicator in the OCC codebook After multiplying by 1, the reference signal X2 is carried on the first subcarrier in the first subcarrier group.
  • Figure 9 shows that is multiplied by the indicator 1 in the OCC codebook, the reference signal S1 is carried on the first subcarrier in the first subcarrier group, and the reference signal S2 and the indication in the OCC codebook After multiplying by 0, the reference signal S2 is not carried on the second subcarrier in the first subcarrier group.
  • the reference signal S1 is carried on the first subcarrier of the first subcarrier group
  • the reference signal S3 is carried on the first subcarrier of the second subcarrier group
  • the reference signal S5 is carried in the third subcarrier.
  • the reference signal X1 is carried on the first subcarrier of the first subcarrier group
  • the reference signal X2 is carried on the second subcarrier of the first subcarrier group.
  • the reference signal X3 is carried on the first subcarrier of the second subcarrier group
  • the reference signal X4 is carried on the second subcarrier of the second subcarrier group
  • the reference signal X5 is carried on the first subcarrier of the third subcarrier group.
  • the reference signal X6 is carried on the second subcarrier of the third subcarrier group.
  • the base station, the terminal, and the like include hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in conjunction with the network elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiments of the present invention may divide the functional modules of the base station, the terminal, and the like according to the foregoing method.
  • each functional module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 10 is a schematic diagram showing a possible structure of a base station involved in the foregoing embodiment, where the base station 300 includes a generating unit 301 and a sending unit 302.
  • the generating unit 301 is configured to perform step S101 in the foregoing embodiment
  • the sending unit 302 is configured to perform step S102 in the foregoing embodiment. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
  • the generating unit 301 may be a processor of the base station, and the sending unit 302 may be a transmitter, which may be integrated with the receiver to form a transceiver.
  • FIG. 11 shows a possible logical structure diagram of the base station 310 involved in the above embodiment.
  • the base station 310 includes a processing module 312 and a communication module 313.
  • the processing module 312 is configured to control and manage the actions of the application function entities.
  • the processing module 312 is configured to perform steps S101 and S102 in the above embodiments, and/or other processes for the techniques described herein.
  • the communication module 313 is used for communication with the terminal.
  • the base station 310 can also include a storage module 311 for storing program codes and data of the base station.
  • the processing module 312 can be a processor or a controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
  • the communication module 313 can be a transceiver, a transceiver circuit or a transceiver, or the like.
  • the storage module 311 can be a memory.
  • the base station involved in the embodiment of the present invention may be the device shown in FIG.
  • the base station 320 includes a processor 322, a transceiver 323, a memory 321, and a bus 324.
  • the transceiver 323, the processor 322, and the memory 321 are connected to each other through a bus 324.
  • the bus 324 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • FIG. 13 is a schematic diagram showing a possible structure of a terminal involved in the foregoing embodiment.
  • the terminal 400 includes a generating unit 401, a receiving unit 402, and a sending unit 403.
  • the generating unit 401 is configured to perform step S103 in the foregoing embodiment
  • the receiving unit 402 is configured to perform step S104 in the foregoing embodiment
  • the sending unit 403 is configured to execute step S105 in the foregoing embodiment. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
  • the generating unit 401 may be a processor of the base station
  • the receiving unit 402 may be a receiver
  • the sending unit 403 may be a transmitter, where the receiver may be integrated with the transmitter to form a transceiver of the terminal. Device.
  • FIG. 14 shows a possible logical structure diagram of the terminal 410 involved in the above embodiment.
  • the terminal 410 includes a processing module 412 and a communication module 413.
  • the processing module 412 is configured to control and manage the actions of the terminal.
  • the processing module 412 is configured to perform steps S103, S104, and S105 in the above embodiments, and/or other processes for the techniques described herein.
  • the communication module 413 is configured to communicate with a base station.
  • the terminal 410 may further include a storage module 411 for storing program codes and data of the terminal.
  • the processing module 412 can be a processor or a controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
  • the communication module 413 can be a transceiver, a transceiver circuit or a transceiver, or the like.
  • the storage module 411 can be a memory.
  • the terminal involved in the embodiment of the present invention may be the device shown in FIG.
  • a terminal 420 includes a processor 422, a transceiver 423, a memory 421, and a bus 424.
  • the transceiver 423, the processor 422, and the memory 421 are connected to each other through a bus 424.
  • the bus 424 may be a PCI bus or an EISA bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 15, but it does not mean that there is only one bus or one type of bus.
  • an embodiment of the present invention provides a computer readable storage medium.
  • the computer readable storage medium stores instructions.
  • the base station is configured to perform steps S101-S102 in the foregoing embodiment. .
  • an embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores instructions, and when the computer readable storage medium is run on a computer, causes the terminal to perform step S103 in the foregoing embodiment. S105.
  • a computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, computer instructions can be wired from a website site, computer, server or data center (eg, , coaxial cable, fiber optic, digital subscriber line (DSL) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the computer readable storage medium can be any available media that can be read by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state hard disk (SSD)) or the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, a solid state hard disk (SSD)
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a flash memory, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

本申请提供一种参考信号配置方法、基站和终端，涉及通信技术领域，用以通过配置终端的参考信号所在时频资源，以使得采用第一波形的终端对应的参考信号保持较低的PAPR，包括：基站生成资源配置信息，资源配置信息用于指示第一终端的参考信号所占用的资源单元，资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，参考信号占用多个符号中至少一个符号，在该参考信号占用的符号上，参考信号承载于多个子载波组，多个子载波组中每个子载波组包含连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波，终端采用与参考信号对应的第一波形，基站向终端发送资源配置信息。

Description

一种参考信号配置方法、基站和终端
本申请要求于2017年01月26日提交中国专利局、申请号为201710061810.1、申请名称为“一种参考信号配置方法、基站和终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种参考信号配置方法、基站和终端。
背景技术
在第三代合作项目(3GPP，3rd Generation Partnership Project)的RAN1#86bis中，上行(UP link，UL)新空口(New Radio，NR)需要支持离散傅里叶变换扩频的正交频分复用(Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing，DFT-S-OFDM)波形和循环前缀正交频分复用(Cyclic Prefix-Orthogonal Frequency Division Multiplexing，CP-OFDM)波形。其中，DFT-S-OFDM主要用于小区边缘用户设备(User Equipment，UE)，而CP-OFDM主要用于小区中心UE。
目前现有技术中，若在时频资源上支持传送采用DFT-S-OFDM波形终端和采用CP-OFDM复用相同时频资源，这样不仅会导致DFT-S-OFDM波形的PAPR高，而且还会影响CP-OFDM的性能。
发明内容
本申请提供一种参考信号配置方法、基站和终端，用以通过配置终端的参考信号所在时频资源，以使得采用DFT-S-OFDM波形终端和采用CP-OFDM复用相同时频资源，在保持CP-OFDM的性能前提下，使DFT-S-OFDM保持较低的PAPR。
为达到上述目的，本申请采用如下技术方案：
第一方面，本发明实施例提供一种参考信号配置方法，包括：基站生成资源配置信息，该资源配置信息用于指示第一终端的参考信号所占用的资源单元。资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波。参考信号承载于多个符号中的至少一个符号，在该承载参考信号的符号上，参考信号承载于多个子载波组，多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波，第一终端采用第一波形。基站向第一终端发送所述资源配置信息。
结合第一方面，在第一方面的第一种可能的实现方式中，第一波形为离散傅里叶变换扩频的正交频分复用(Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing，DFT-S-OFDM)波形。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，承载参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，第二终端采用循环前缀正交频分复用(Cyclic Prefix-Orthogonal Frequency Division Multiplexing，CP-OFDM)波形，第二终端的参考信号为DMRS。
结合第一方面至第一方面的第二种可能的实现方式中任意一项，在第一方面的第 三种可能的实现方式中，每个子载波组包括连续的2个子载波。这样采用第一波形的终端能够使得第一波形在一个子载波组中仅占用一半的子载波。进而使得第一波形保持低PAPR特性。
结合第一方面至第一方面的第三种可能的实现方式中任意一项，在第一方面的第四种可能的实现方式中，参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
结合第一方面至第一方面的第四种可能的实现方式中任意一项，在第一方面的第五种可能的实现方式中，每个子载波组包括连续的3个或3个以上的子载波。
结合第一方面至第一方面的第五种可能的实现方式中任意一项，在第一方面的第六种可能的实现方式中，参考信号为解调参考信号DMRS。
结合第一方面至第一方面的第六种可能的实现方式中任意一项，在第一方面的第七种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号在其所承载的子载波组所占用的子载波的第二标识。
结合第一方面至第一方面的第七种可能的实现方式中任意一项，在第一方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，其中，一个参考信号对应的OCC码本序列中的指示符用于指示第一终端是否将该参考信号配置在该参考信号所承载的子载波组中的子载波上。
结合第一方面至第一方面的第七种可能的实现方式中任意一项，在第一方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，其中，一个参考信号对应的OCC码本序列中的指示符用于指示第一终端在该参考信号所承载的子载波组中的子载波上是否产生参考信号。
结合第一方面至第一方面的第七种可能的实现方式中任意一项，在第一方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，OCC码本序列中每个指示符用于指示第一终端将该参考信号与该指示符乘积所得的结果，映射在承载该参考信号的子载波组中的子载波上。
结合第一方面至第一方面的第八种可能的实现方式中任意一项，在第一方面的第就种可能的实现方式中，资源配置指示信息中包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，其中，该第一终端与第二终端采用不同的OCC码本。
第二方面，本发明实施例提供一种参考信号配置方法，包括：第一终端生成参考信号，该第一终端采用第一波形。第一终端发送参考信号，用于承载参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，参考信号所在的资源单元承载于时频资源多个符号中的至少一个符号，在承载该参考信号的符号上，该参考信号承载于多个子载波组，多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波。
结合第二方面，在第二方面的第一种可能的实现方式中，第一波形为离散傅里叶 变换扩频的正交频分复用DFT-S-OFDM波形。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，承载参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，第二终端采用循环前缀正交频分复用CP-OFDM波形，第二终端的参考信号为DMRS。
结合第二方面至第二方面的第二种可能的实现方式中任意一项，在第二方面的第三种可能的实现方式中，每个子载波组包括连续的2个子载波。
结合第二方面至第二方面的第三种可能的实现方式中任意一项，在第二方面的第四种可能的实现方式中，参考信号在每个子载波组中占用的子载波为频率最高的子载波或者最低的子载波。
结合第二方面至第二方面的第四种可能的实现方式中任意一项，在第二方面的第五种可能的实现方式中，每个子载波组包括连续的3个或3个以上的子载波。
结合第二方面至第二方面的第五种可能的实现方式中任意一项，在第二方面的第六种可能的实现方式中，参考信号为解调参考信号DMRS。
结合第一方面至第一方面的第六种可能的实现方式中任意一项，在第一方面的第七种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号在其所承载的子载波组所占用的子载波的第二标识。
结合第二方面至第二方面的第七种可能的实现方式中任意一项，在第二方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，其中，一个参考信号对应的OCC码本序列中的指示符用于指示第一终端是否将该参考信号配置在该参考信号所承载的子载波组中的子载波上。
结合第二方面至第二方面的第七种可能的实现方式中任意一项，在第二方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，其中，一个参考信号对应的OCC码本序列中的指示符用于指示第一终端在该参考信号所承载的子载波组中的子载波上是否产生参考信号。
结合第二方面至第二方面的第七种可能的实现方式中任意一项，在第二方面的第八种可能的实现方式中，资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，OCC码本序列包括多个指示符，OCC码本序列中每个指示符用于指示第一终端将该参考信号与该指示符乘积所得的结果，映射在承载该参考信号的子载波组中的子载波上。
结合第二方面至第二方面的第八种可能的实现方式中任意一项，在第二方面的第就种可能的实现方式中，资源配置指示信息中包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，其中，该第一终端与第二终端采用不同的OCC码本序列。
第三方面，本发明实施例提供一种基站，包括：生成单元，用于生成资源配置信息，该资源配置信息用于指示第一终端的参考信号所占用的资源单元。资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承 载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波，第一终端采用第一波形。发送单元，用于向第一终端发送资源配置信息。
结合第三方面，在第三方面的第一种可能的实现方式中，第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
结合第三方面或第三方面的第一种可能的实现方式中，在第三方面的第二种可能的实现方式中，承载参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，第二终端采用循环前缀正交频分复用CP-OFDM波形，第二终端的参考信号为DMRS。
结合第三方面至第三方面的第二种可能的实现方式中任意一项，在第三方面的第三种可能的实现方式中，每个子载波组包括连续的2个子载波。
结合第三方面至第三方面的第三种可能的实现方式中任意一项，在第三方面的第四种可能的实现方式中，参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
结合第三方面至第三方面的第四种可能的实现方式中任意一项，在第三方面的第五种可能的实现方式中，每个子载波组包括连续的3个或3个以上的子载波。
结合第三方面至第三方面的第五种可能的实现方式中任意一项，在第三方面的第六种可能的实现方式中，参考信号为解调参考信号DMRS。
第四方面，本发明实施例提供一种终端，包括：生成单元，用于生成参考信号，该终端采用第一波形。发送单元，用于发送参考信号，用于承载参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，参考信号所在的资源单元承载于时频资源多个符号中的至少一个符号，在承载该参考信号的符号上，该参考信号承载于多个子载波组，多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波。
结合第四方面，在第四方面的第一种可能的实现方式中，第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
结合第四方面或第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，参考信号占用的多个子载波中每个子载波用于承载第二终端的参考信号，其中，第二终端采用CP-OFDM波形，第二终端的参考信号为DMRS。
结合第四方面至第四方面的第一种可能的实现方式中任意一项，在第四方面的第三种可能的实现方式中，每个子载波组包括连续的2个子载波。
结合第四方面至第四方面的第三种可能的实现方式中任意一项，在第四方面的第四种可能的实现方式中，参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
结合第四方面至第四方面的第四种可能的实现方式中任意一项，在第四方面的第五种可能的实现方式中，每个子载波组包括连续的3个或3个以上的子载波。
第五方面，本发明实施例提供一种基站，包括存储器、处理器、总线和收发器，其中，存储器，用于存储代码和数据，处理器与存储器通过总线连接，处理器运行存 储器中的代码以执行：生成资源配置信息，该资源配置信息用于指示第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形。收发器，用于向第一终端发送所述资源配置信息。
第六方面，本发明实施例提供一种终端，包括存储器、处理器、总线和收发器，其中，存储器中存储代码和数据，处理器与存储器通过总线连接，处理器运行存储器中的代码以执行：生成参考信号，该第一终端采用第一波形。收发器用于执行：发送参考信号，用于承载所述参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号所在的资源单元承载于所述时频资源多个符号中的至少一个符号，在承载该参考信号的符号上，该参考信号承载于多个子载波组，所述多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在每个子载波组中占用一个子载波。
第七方面，本发明实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当计算机可读存储介质在计算机上运行时，使得基站执行第一方面至第一方面的任意一种可能的设计方式所描述的参考信号配置方法的指令。
第八方面，本发明实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当计算机可读存储介质在计算机上运行时，使得终端执行第二方面至第二方面的任意一种可能的设计方式所描述的参考信号配置方法的指令。
第九方面，本发明实施例提供一种包括指令的计算机程序产品，当其在基站上运行时，使得基站执行上述第一方面至第一方面任意一种可能的实现方式所描述的参考信号配置方法的方法。
第十方面，本发明实施例提供一种包括指令的计算机程序产品，当其在终端上运行时，使得终端执行上述第二方面至第二方面任意一种可能的实现方式所描述的参考信号配置方法的方法。
第十一方面，本发明实施例提供一种参考信号配置方法，包括：
基站确定第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形；所述基站通过所述资源单元获取所述参考信号。
在一种可能的实现方式中，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
在一种可能的实现方式中，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，所述第二终端的参考信号为DMRS。
在一种可能的实现方式中，所述每个子载波组包括连续的2个子载波。
在一种可能的实现方式中，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
在一种可能的实现方式中，所述每个子载波组包括连续的3个或3个以上的子载波。
在一种可能的实现方式中，所述参考信号为解调参考信号DMRS。
第十二方面，本发明实施例提供一种基站，包括：确定模块，用于确定第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形；获取模块，用于通过所述资源单元获取所述参考信号。
在一种可能的实现方式中，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
在一种可能的实现方式中，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，所述第二终端的参考信号为DMRS。
在一种可能的实现方式中，所述每个子载波组包括连续的2个子载波。
在一种可能的实现方式中，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
在一种可能的实现方式中，所述每个子载波组包括连续的3个或3个以上的子载波。
在一种可能的实现方式中，所述参考信号为解调参考信号DMRS。
第十三方面，本发明实施例提供一种基站，包括：处理器，用于：
确定第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形；通过所述资源单元获取所述参考信号。
在一种可能的实现方式中，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
在一种可能的实现方式中，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，所述第二终端的参考信号为DMRS。
在一种可能的实现方式中，所述每个子载波组包括连续的2个子载波。
在一种可能的实现方式中，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
在一种可能的实现方式中，所述每个子载波组包括连续的3个或3个以上的子载波。
在一种可能的实现方式中，所述参考信号为解调参考信号DMRS。
本发明实施例还提供一种通信系统，该通信系统包括第三方面至第三方面任意一种可能的实现方式所描述的基站，以及第四方面或第四方面任意一种可能的实现方式所描述的终端。
可以理解地，上述提供的任一种计算机可读存储介质均用于执行上文所提供的基站或终端对应的方法，因此，其所能达到的有益效果可参考上文所提供的对应的方法中的有益效果，此处不再赘述。
本发明实施例提供的一种参考信号配置方法，通过第一终端根据基站发送的资源配置信息，第一终端在发送参考信号时，使得用于承载参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，参考信号所在的资源单元占用时频资源多个符号中的至少一个符号，在该参考信号占用的符号上，该参考信号承载于多个子载波组，多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，参考信号在每个子载波组中占用一个子载波。由于参考信号承载于多个子载波上，且在一个子载波组中仅占用一个子载波，因此本发明实施例能够保持DFT-S-OFDM低PAPR的特性。
可以理解地，上述提供的任一种可读介质均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考上文所提供的对应的方法中的有益效果，此处不再赘述。
附图说明
图1为本发明实施例提供的一种通信系统的结构示意图；
图2a为本发明实施例提供的基站的结构示意图；
图2b为本发明实施例提供的基站的基带子系统结构示意图；
图3为本发明实施例提供的一种参考信号配置方法流程示意图；
图4为本发明实施例提供的一种资源单元的结构示意图；
图5为本发明实施例提供的一种参考信号配置结构示意图一；
图6为本发明实施例提供的一种参考信号配置结构示意图二；
图7为本发明实施例提供的一种参考信号配置结构示意图三；
图8a为本发明实施例提供的一种参考信号配置结构示意图四；
图8b为本发明实施例提供的一种参考信号配置结构示意图五；
图9为本发明实施例提供的一种参考信号配置结构示意图六；
图10为本发明实施例提供的一种基站的逻辑结构示意图；
图11为本发明实施例提供的一种基站的结构示意图；
图12为本发明实施例提供的一种基站的结构示意图；
图13为本发明实施例提供的一种终端的逻辑结构示意图；
图14为本发明实施例提供的一种终端的结构示意图；
图15为本发明实施例提供的一种终端的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行详细地描述。
在本发明实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本发明实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
为了便于清楚描述本发明实施例的技术方案，在本发明的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分，本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定。
本发明实施例提供的技术方案可以应用于支持两种波形的无线通信系统中，例如，支持DFT-S-OFDM波形和CP-OFDM波形的无线通信网络中，如图1所示，该系统包括基站101以及与基站101通信的至少一个用户设备(图1中仅示出了两个用户设备)，例如，图1中的用户设备102以及用户设备103。
其中，在本发明实施例中，基站(base station，BS)可以是与用户设备(User Equipment，UE)或其它通信站点如中继站点，进行通信的设备，基站可以提供特定物理区域的通信覆盖。
在本发明实施例中，UE可以分布于整个无线网络中，每个UE可以是静态的或移动的。
UE可以是为终端(terminal)，移动台(mobile station)，用户单元(subscriber unit)，站台(station)等。UE可以为蜂窝电话(cellular phone)，个人数字助理(personal digital assistant，PDA)，无线调制解调器(Modem)，无线通信设备，手持设备(handheld)，膝上型电脑(laptop computer)，无绳电话(cordless phone)，无线本地环路(wireless local loop，WLL)台等。当UE应用于M2M方式通信时，UE可以称为M2M终端，具体可以是支持M2M通信的智能电表、智能家电等。
如图2a所示，作为一个举例，基站包括基带子系统、中射频子系统、天馈子系统和一些支撑结构(例如，整机子系统)，其中，基带子系统用于实现整个基站的操作维护，实现信令处理、无线资源原理、到EPC(Evolved Packet Core，分组核心网)的传输接口，实现LTE物理层、MAC(Medium Access Control，介质访问控制)层、L3信令、操作维护主控功能；中射频子系统实现基带信号、中频信号和射频信号之间的转换，实现LTE无线接收信号的解调和发送信号的调制和功率放大；天馈子系统包括连接到基站射频模块的天线和馈线以及GRS接收卡的天线和馈线，用于实现无线空口信号的接收和发送，整机子系统，是基带子系统和中频子系统的支撑部分，提供结构、供电和环境监控功能。
其中，基带子系统可以如图2b所示：例如，手机上网需要通过基站接入核心网(MME/S-GW),在通过核心网接入因特网，其中因特网的数据通过核心网与基站之间的接口，传递到基带部分，基带部分进行PDCP，RLC，MAC层、编码，调制等处理，交给射频部分发射给终端。基带与射频之间可以通过CPRI接口连接；另外，射频部分目前可以通过光纤拉远，例如拉远的RRU。本发明实施例中的配置方法的各个步骤基带通过射频来实现，同时接收发送步骤是通过天线(例如，空中接口)来实现的。
本发明实施中涉及的终端与基站之间的接口可以理解为终端与基站之间进行通信的空中接口，或者也可以称为Uu接口。
参考信号(Reference Signal，RS)又称为导频(Pilot)或者训练序列，对于发射端设备和接收端设备而言，参考信号是已知的。参考信号具有多种用途，基于具体用途可以将参考信号划分为多种类型，例如用于获得信道状态信息(Channel State Information Reference，CSI)的参考信号，用于对接收信号进行解调的参考信号，以及用于进行波束管理的参考信号。特别的，某些参考信号可以兼具多种用途。用途不同，参考信号的发射方式和承载参考信号的资源的配置也可以不同。可选的，本发明实施例中的参考信号为解调参考信号(Demodulation ReferenceSignal，DMRS)。其中，由于DMRS与数据通过相同的预编码矩阵进行预编码，基于DMRS可以对预编码后的信道(又称为等效信道)进行信道估计，并基于信道估计结果对数据进行解调，因此DMRS用于对解调接收的信号。
图3示出了本发明实施例提供的一种参考信号配置方法，如图3所示，该方法包括：
S101、基站生成资源配置信息，资源配置信息用于指示第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，第一终端采用第一波形。由此可见，所述资源单元包括时域内的所述多个符号中的至少一个符号和频域内所述多个子载波组中每一子载波组中的一个子载波。上述时频资源可以类似LTE中的RB或者RB pair。
可选的，本发明实施例中的第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
在S101中，基站生成资源配置信息。该资源配置信息用于指示第一终端的参考信号所占用的资源单元。图4是基站指示第一终端的参考信号所采用的资源分布图样100的示范性示意图。作为一个例子，在时域上，最小的资源粒度可以是一个OFDM符号(上行是SC-FDMA符号。下文统一称为OFDM符号)。在频域上，最小的资源粒度是一个子载波。一个OFDM符号与一个子载波组成的一个时频资源单元，即为资源单元(Resource Element，RE)。物理层在进行资源映射的时候，是以RE为基本单位的。如图4所示，一天线端口对应的参考信号R所占据的资源单元(Resource Element，RE)分散分布在资源块(Resource Block)对102所包含的两个资源块104和106内。资源块对102包括时域上连续的多个符号和频域上连续的多个子载波。并且在资源块对102内，承载参考信号的资源单元所在的位置是固定的。借助上述资源单元上承载的参考信号，结合特定的插值方法，便可对整个资源块对102进行信道估计。由此可见，所述资源单元包括时域内的所述多个符号中的至少一个符号和频域内所述多个子载波组中每一子载波组中的一个子载波。上述时频资源可以类似LTE中的RB或者RB pair。本发明实施例提供了一种资源单元，该资源单元可以用作为调度用户进行资源分 配的基本单位，也可以用于描述多种参考信号的排布方式。下面就结合图4对本发明实施例提供的资源单元进行描述。
图4是依照本发明实施例的资源单元100的结构示意图。如图4所示，资源单元(Resource Unit)100占用频域内多个连续的子载波，和时域内多个连续的符号(OFDM符号)。资源单元内的最小资源单位是资源粒(Resource Element，RE)，每个资源粒占用频域内的一个子载波和时域内的一个符号。资源单元100通常包括多个RE。
请参见图5，第一终端的参考信号承载于多个符号中的至少一个符号。在承载该参考信号的符号上，参考信号承载于多个子载波组，如图5中第一子载波组，第二子载波组，及第三子载波组。此处为说明方便，仅列举3个子载波组，本领域技术人员可以理解，子载波组数量可以为1组，也可以是多组。而不仅限于此处列举的3组。
多个子载波组中每个子载波组包含连续的多个子载波，如图5中，第一子载波组包括第一子载波和第二子载波。同上，本发明实施例中仅是列举了一个子载波组中可以包括两个子载波，可以理解的是，在实际使用过程中，一个子载波组中还可以包括3个或3个以上的子载波。相邻子载波组之间间隔预设数量的子载波。作为一种可能的实施方式，参考信号在每个子载波组中占用一个子载波。如果一个子载波组中包含两个子载波，则参考信号占用该子载波组中一半的资源。同理，如果一个子载波组中包含三个或三个以上子载波，则参考信号占用该子载波组三分之一或更少比例的资源。本领域普通技术人员可以理解，在子载波组中包含三个或三个以上子载波时，参考信号占用的子载波也可以是两个或两个以上，只要参考信号占用的子载波只是子载波组中的部分子载波，且能够使得参考信号可以保持低峰值平均功率比(PAPR-Peak to Average Power Ratio，PAPR)的特性，都是可能的实施方式。
请参见步骤S102。在基站确定第一终端参考信号所占用的资源单元之后，基站向终端发送资源配置信息。可选的，基站可以通过下行控制信息(Downlink control information，DCI)向终端发送资源配置信息。
步骤S103和步骤S104中，第一终端接收基站发送的资源配置信息并保存。之后，在步骤S104和步骤S105中，第一终端生成参考信号并按照保存的资源配置信息指示的资源单元，第一基站发送参考信号给基站。
可以理解的是，在本发明实施例的步骤S105之后，本发明实施例还包括：
步骤S106、基站接收第一终端发送的参考信号。
同一时刻，一个终端仅可以采用一个波形即采用DFT-S-OFDM波形或者CP-OFDM波形，不同终端在同一个时刻时，一个终端可以采用DFT-S-OFDM波形，另一个终端可以采用CP-OFDM波形。这样能够实现在同一时刻采用DFT-S-OFDM波形的第一终端与采用CP-OFDM波形的第二终端之间的MU，由于DFT-S-OFDM用于小区内的边缘用户设备，CP-OFDM用于小区内的中心用户设备，因此，CP-OFDM能够使用DFT-S-OFDM占据的时频资源，进而提高了CP-OFDM性能。
可选的，参考信号在每个子载波组中占用的子载波为频率最高或者最低的子载波。
具体的，在实际使用过程中可以根据信道质量等参数确定将参考信号放置在每个子载波组中频率最高的子载波上或者是频率最低的子载波上。
第一终端的参考信号通过该参考信号的正交码复用在所述子载波上，所述第二终 端的参考信号通过参考信号的正交码复用在所述子载波上，即各终端的参考信号通过各自的正交码复用在子载波组的子载波上。正交码可以是正交掩码(Orthogonal Cover Code，OCC)。
下述以每个子载波组包括2个子载波，第一波形为DFT-S-OFDM波形，在承载有DMRS的子载波组上承载有采用CP-OFDM波形的第二终端的参考信号，介绍基站向终端发送的资源配置信息的具体内容，以及采用DFT-S-OFDM波形的第一终端的参考信号与采用CP-OFDM波形的第二终端的参考信号之间的图样分布。
本发明实施例中的资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号在其所承载的子载波组所占用的子载波的第二标识。具体的，若本发明实施例中承载参考信号的子载波组还用于承载采用CP-OFDM波形的终端的参考信号，则基站向承载采用CP-OFDM波形的参考信号的终端发送配置信息时，该配置信息可以仅包括参考信号所在的子载波组的标识。
其中，第一标识用于唯一识别子载波组，第二标识用于唯一识别子载波。例如，第一标识和第二标识可以为编号。例如，可以对每个子载波组编号，例如，第一子载波组为10，第二子载波组为20等以此类推，本发明实施例在此不再赘述。可以理解的是，上述只是举例说明每个子载波组的标识为编号，在实际使用过程中可以根据需要设置。又例如，第一子载波组中的第一子载波的编号可以为101。
示例性的，如图5所示，基站向采用CP-OFDM波形的第二终端发送的配置指示信息仅用于指示参考信号承载于哪一个子载波组上。采用CP-OFDM波形第二终端在接收到该配置指示信息后，将参考信号在配置指示信息所指示的子载波组上发送。即如图5中采用CP-OFDM波形的参考信号X1，X2，X3，X4，X5以及X6被配置在第一子载波组、第二子载波组以及第三子载波组中的每个子载波上。
作为一个例子，本发明实施例中的采用第一波形，如DFT-S-OFDM波形的终端，参考信号包括S1、S2和S3。其中，资源配置信息用于指示参考信号S1承载于第一子载波组，且该参考信号S1占用第一子载波组中的第一子载波，参考信号S2承载于第二子载波组，且该参考信号S2占用第二子载波组中的第一子载波，参考信号S3承载于第三子载波组，且该参考信号S3占用第三子载波组中的第一子载波。则在第一终端接收到资源配置信息后，将参考信号S1映射在第一子载波组的第一子载波上，将参考信号S2映射到第二子载波组的第一子载波上，将参考信号S3映射到第三子载波组的第一子载波上。
另一方面，本发明实施例中的资源配置信息包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列。该OCC码本序列包括多个指示符，多个指示符中的每个指示符与承载参考信号的子载波组中一个子载波对应。一个参考信号对应的OCC码本序列用于指示第一终端将该参考信号配置在该参考信号所承载的子载波组中的哪个子载波上。即用于指示参考信号在子载波组中的具体位置。
具体的，OCC码本序列中的指示符的数量可以根据该OCC码本所对应的参考信号承载的子载波组中子载波的数量确定。
本发明实施例中OCC码本序列包括第一指示符和第二指示符，例如，第一指示符 为“1”，第二指示符为“0”。
在本发明实施例中即使OCC码本序列对应的内容相同，即均包括第一指示符和第二指示符，但是OCC码本中每个指示符的作用不同时，终端根据参考信号对应OCC码本，对参考信号的处理也不同，因此，以下将结合相应情形介绍：
一方面，示例性的，OCC码本序列中的第一指示符用于指示将该参考信号映射到与该第一指示符对应的子载波上，OCC码本序列中的第二指示符用于指示将该参考信号不映射到与该第二指示符对应的子载波上，该资源配置信息用于指示参考信号S1、参考信号S2和参考信号S3分别承载于第一子载波组、第二子载波组以及第三子载波组，且参考信号S1、参考信号S2和参考信号S3对应的码本均为[1，0]，若该参考信号S1在第一子载波组中的第一子载波对应的指示符为第一指示符1，则第一终端将参考信号S1映射到该第一子载波上，若该第一子载波组中的第二子载波对应的指示符为0，则第一终端将参考信号S2不映射到该第二子载波上。若该第二子载波组中的第一子载波对应指示符1，则第一终端将参考信号S2映射到第二子载波组中的第一子载波上，若该第二子载波组中的第二子载波对应指示符0，则终端将参考信号S2不映射到第二子载波组中的第二子载波上。若该第三子载波组中的第一子载波对应指示符1，则第一终端将参考信号S3映射到第三子载波组中的第一子载波上，若该第三子载波组中的第二子载波对应指示符0，则第一终端将参考信号S3不映射到第三子载波组中的第二子载波上。具体的，参考信号在资源单元上的分布可以如图6所示。
另一方面，OCC码本序列中的第一指示符用于指示第一终端在该参考信号所承载的子载波组中的某个子载波上产生参考信号，OCC码本序列中的第二指示符用于指示第一终端在承载该参考信号的子载波组中的某个子载波上不产生参考信号。
例如，若参考信号对应的OCC码本序列为[1，0]，则可以理解为第一终端在承载该参考信号的子载波组上的一个子载波上生成参考信号，在承载该参考信号的子载波组上的另一个子载波上不生成参考信号，也即在承载该参考信号的一个子载波组上生成的参考信号序列为[S1，0]。
下述以参考信号为S1、参考信号S2和参考信号S3为例详细说明：第一终端若确定参考信号对应的码本为[S1，0]，则在承载该参考信号S1、参考信号S2和参考信号S3的子载波组上生成的参考信号序列为[S1，0，S2，0，S3，0…]。第一终端根据生成的参考信号序列将参考信号配置在承载该参考信号的子载波组中的子载波上，如图7所示。
可以理解的是，若参考信号对应的码本为[0，1]，即参考信号为S1、参考信号S2和参考信号S3分别对应的码本为[0，1]，则第一终端生成的参考信号序列为[0，S1，0，S2，0，S3…]。最终，第一终端根据上述参考信号对应的序列[0，S1，0，S2，0，S3…]，将参考信号放置在承载该参考信号的子载波上。
又一方面，本发明实施例OCC码本序列中每个指示符用于指示第一终端将该参考信号与该指示符乘积所得的结果，映射在承载该参考信号的子载波组中的某个子载波上。
示例性的，若第一终端生成的参考信号序列为[S1，S1，S2，S2，S3，S3，…]其中，参考信号S1承载于第一子载波组上，参考信号S2承载于第二子载波组上，参考 信号S3承载于第三子载波组上。第一终端在生成参考信号序列后将参考信号序列中的每个参考信号与一个OCC码本序列中的指示符相乘，并将每个参考信号与该参考信号对应的码本序列中的指示符相乘的结果映射在一个子载波上，如图8a所示。将参考信号S1与OCC码本的指示符1相乘，则最终参考信号S1承载于第一子载波组中的第一子载波上。将参考信号S1与OCC码本中的指示符0相乘，则最终在第一子载波组的第二子载波上不承载参考信号S1。参考信号S2与OCC码本的指示符1相乘，则最终参考信号S2承载于第二子载波组中的第一子载波上。将参考信号S2与OCC码本中的指示符0相乘，则最终在第二子载波组的第二子载波上不承载参考信号S2。参考信号S3与OCC码本的指示符1相乘，则最终参考信号S3承载于第三子载波组中的第一子载波上。将参考信号S3与OCC码本中的指示符0相乘，则最终在第三子载波组的第二子载波上不承载参考信号S3。
示例性的，若第一终端生成的参考信号序列为[S1，S2，S3，S4，S5，S6，…]其中，参考信号S1、参考信号S2承载于第一子载波组上，参考信号S3和参考信号S4承载于第二子载波组上，参考信号S5和参考信号S6承载于第三子载波组上。第一终端在生成参考信号序列[S1，S2，S3，S4，S5，S6，…]后，将参考信号序列[S1，S2，S3，S4，S5，S6，…]中的每个参考信号与一个OCC码本序列中的指示符相乘，并将每个参考信号与该参考信号对应的码本序列中的指示符相乘的结果映射在一个子载波上。如图8b所示，将参考信号S1与OCC码本的指示符1相乘，则最终参考信号S1承载于第一子载波组中的第一子载波上。将参考信号S2与OCC码本中的指示符0相乘，则最终在第一子载波组中的第二子载波上不承载参考信号S2。参考信号S3与OCC码本的指示符1相乘，则最终参考信号S3承载于第二子载波组中的第一子载波上。将参考信号S4与OCC码本中的指示符0相乘，则最终在第二子载波组的第二子载波上不承载参考信号S4。参考信号S5与OCC码本的指示符1相乘，则最终参考信号S5承载于第三子载波组中的第一子载波上。将参考信号S6与OCC码本中的指示符0相乘，则最终在第三子载波组的第二子载波上不承载参考信号S6。
再一方面，资源配置指示信息中包括参考信号承载于多个子载波组中每个子载波组的第一标识，以及该参考信号所对应的OCC码本序列，其中，该第一终端与第二终端采用不同的OCC码本。例如，第一终端采用的OCC码本为[1,0]，第二终端采用的OCC码本[1,1]。则如图9所示，若第一终端生成的参考信号序列为[S1，S2，S3，S4，S5，S6……]，第一终端生成的参考信号序列为[X1，X2，X3，X4，X5，X6……]。则对于第一终端：参考信号S1与OCC码本中的指示符1相乘后，参考信号S1承载于第一子载波组中的第一子载波上，参考信号S2与OCC码本中的指示符0相乘后，在第一子载波组中的第二子载波上不承载参考信号S2。对于第二终端，参考信号X1与OCC码本中的指示符1相乘后，参考信号X1承载于第一子载波组中的第一子载波上，参考信号X2与OCC码本中的指示符1相乘后，参考信号X2承载于第一子载波组中的第一子载波上。如图9所示。其余参考信号的分布方式和原理均可以参考参考信号S1、S2和X1和X2，本发明实施例在此不再赘述。最终，如图9所示，参考信号S1承载于第一子载波组的第一子载波上，参考信号S3承载于第二子载波组的第一 子载波上，参考信号S5承载于第三子载波组的第一子载波上。参考信号X1承载于第一子载波组的第一子载波上，参考信号X2承载于第一子载波组的第二子载波上。参考信号X3承载于第二子载波组的第一子载波上，参考信号X4承载于第二子载波组的第二子载波上，参考信号X5承载于第三子载波组的第一子载波上，参考信号X6承载于第三子载波组的第二子载波上。
上述主要从基站和终端之间交互的角度对本申请提供的方案进行了介绍。可以理解的是，基站和终端等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的网元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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。
本发明实施例可以根据上述方法示例对基站和终端等进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，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。
在采用对应各个功能划分各个功能模块的情况下，图10示出了上述实施例中所涉及的基站的一种可能的结构示意图，基站300包括：生成单元301和发送单元302。其中，生成单元301用于执行上述实施例中的步骤S101；发送单元302用于执行上述实施例中的步骤S102。上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
具体的，在硬件实现上，上述生成单元301可以为基站的处理器，发送单元302可以为发送器，其可以与接收器集成在一起构成收发器。
在采用集成的单元的情况下，图11示出了上述实施例中所涉及的基站310的一种可能的逻辑结构示意图。基站310包括：处理模块312和通信模块313。处理模块312用于对应用功能实体的动作进行控制管理，例如，处理模块312用于执行上述实施例中的步骤S101以及S102，和/或用于本文所描述的技术的其他过程。通信模块313用于与终端的通信。基站310还可以包括存储模块311，用于存储基站的程序代码和数据。
其中，处理模块312可以是处理器或控制器，例如可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信模块313可以是收发器、收发电路或收发器等。存储模块311可以是存储器。
当处理模块312为处理器，通信模块313为收发器，存储模块311为存储器时，本发明实施例所涉及的基站可以为图12所示的设备。
参阅图12所示，为基站的一种结构举例，该基站320包括：处理器322、收发器 323、存储器321以及总线324。其中，收发器323、处理器322以及存储器321通过总线324相互连接；总线324可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图12中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在采用对应各个功能划分各个功能模块的情况下，图13示出了上述实施例中所涉及的终端的一种可能的结构示意图，终端400包括：生成单元401、接收单元402以及发送单元403。其中，生成单元401用于执行上述实施例中的步骤S103，接收单元402，用于执行上述实施例中的步骤S104，发送单元403用于执行上述实施例中的步骤S105。上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
具体的，在硬件实现上，上述生成单元401可以为基站的处理器，接收单元402可以为接收器，发送单元403可以为发送器，其中，接收器可以与发送器集成在一起构成终端的收发器。
在采用集成的单元的情况下，图14示出了上述实施例中所涉及的终端410的一种可能的逻辑结构示意图。终端410包括：处理模块412和通信模块413。处理模块412用于对终端的动作进行控制管理，例如，处理模块412用于执行上述实施例中的步骤S103、S104以及S105，和/或用于本文所描述的技术的其他过程。通信模块413用于与基站通信。终端410还可以包括存储模块411，用于存储终端的程序代码和数据。
其中，处理模块412可以是处理器或控制器，例如可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信模块413可以是收发器、收发电路或收发器等。存储模块411可以是存储器。
当处理模块412为处理器，通信模块413为收发器，存储模块411为存储器时，本发明实施例所涉及的终端可以为图15所示的设备。
参阅图15所示，为终端的一种结构举例，该终端420包括：处理器422、收发器423、存储器421以及总线424。其中，收发器423、处理器422以及存储器421通过总线424相互连接；总线424可以是PCI总线或EISA总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图15中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
一方面，本发明实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当计算机可读存储介质在计算机上运行时，使得基站执行上述实施例中的步骤S101-S102。
另一方面，本发明实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当计算机可读存储介质在计算机上运行时，使得终端执行上述实施例中的步骤S103-S105。
在上述实施例中，可以全部或部分的通过软件、硬件、固件或者其任意组合来实 现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式实现。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程序指令时，全部或部分地产生按照本发明实施例多描述的流程或功能。所述计算机可以使通用计算机、专用计算机、计算机网络、或者其他可编程装置。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，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、服务器或数据中心传输。计算机可读存储介质可以是计算机能够读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。所述可用介质可以使磁性介质，(例如，软盘，硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如，固态硬盘(Solid Stste Disk,SSD))等。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。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。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，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，所述模块或单元的划分，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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元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全部或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)或处理器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：快闪存储器、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
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，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因 此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (28)

  1. 一种参考信号配置方法，其特征在于，包括：
    基站生成资源配置信息，所述资源配置信息用于指示第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形；
    所述基站向所述第一终端发送所述资源配置信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
  3. 根据权利要求1或2所述的方法，其特征在于，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，所述第二终端的参考信号为DMRS。
  4. 根据权利要求1或2所述的方法，其特征在于，所述每个子载波组包括连续的2个子载波。
  5. 根据权利要求1或2所述的方法，其特征在于，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
  6. 根据权利要求1或2所述的方法，其特征在于，所述每个子载波组包括连续的3个或3个以上的子载波。
  7. 根据权利要求1所述的方法，其特征在于，所述参考信号为解调参考信号DMRS。
  8. 一种参考信号配置方法，其特征在于，包括：
    第一终端生成参考信号，所述第一终端采用第一波形；
    所述第一终端发送所述参考信号，用于承载所述参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号所在的资源单元承载于所述时频资源多个符号中的至少一个符号，在承载该参考信号的符号上，该参考信号承载于多个子载波组，所述多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在每个子载波组中占用一个子载波。
  9. 根据权利要求8所述的方法，其特征在于，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
  10. 根据权利要求8或9所述的方法，其特征在于，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，第二终端的参考信号为DMRS。
  11. 根据权利要求8所述的方法，其特征在于，所述每个子载波组包括连续的2个子载波。
  12. 根据权利要求11所述的方法，其特征在于，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
  13. 根据权利要求8或9所述的方法，其特征在于，所述每个子载波组包括连续的3个或3个以上的子载波。
  14. 根据权利要求8所述的方法，其特征在于，所述参考信号为解调参考信号DMRS。
  15. 一种基站，其特征在于，包括：
    生成单元，用于生成资源配置信息，所述资源配置信息用于指示第一终端的参考信号所占用的资源单元，所述资源单元所在的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号承载于所述多个符号中的至少一个符号，在该承载所述参考信号的符号上，所述参考信号承载于多个子载波组，所述多个子载波组中每个子载波组包含频率连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在所述每个子载波组中占用一个子载波，所述第一终端采用第一波形；
    发送单元，用于向所述第一终端发送所述资源配置信息。
  16. 根据权利要求15所述的基站，其特征在于，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形。
  17. 根据权利要求15或16所述的基站，其特征在于，所述承载所述参考信号的多个子载波组中的每个子载波用于承载第二终端的参考信号，其中，所述第二终端采用循环前缀正交频分复用CP-OFDM波形，第二终端的参考信号为DMRS。
  18. 根据权利要求15或16所述的基站，其特征在于，所述每个子载波组包括连续的2个子载波。
  19. 根据权利要求18所述的基站，其特征在于，所述参考信号在每个子载波组中占用的子载波为该子载波组中频率最高的子载波或者最低的子载波。
  20. 根据权利要求15所述的基站，其特征在于，所述每个子载波组包括连续的3个或3个以上的子载波。
  21. 一种终端，其特征在于，包括：
    生成单元，用于生成参考信号，所述第一终端采用第一波形；
    发送单元，用于发送所述参考信号，用于承载所述参考信号的时频资源包括时域上连续的多个符号和频域上连续的多个子载波，所述参考信号所在的资源单元承载于所述时频资源多个符号中的至少一个符号，在承载该参考信号的符号上，该参考信号承载于多个子载波组，所述多个子载波组中每个载波组包括连续的多个子载波，相邻子载波组之间间隔预设数量的子载波，所述参考信号在每个子载波组中占用一个子载波。
  22. 根据权利要求21所述的终端，其特征在于，所述第一波形为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM波形，第二终端的参考信号为DMRS。
  23. 根据权利要求21或22所述的终端，其特征在于，所述参考信号占用的多个子载波中每个子载波用于承载第二终端的参考信号，其中，第二终端采用CP-OFDM波形。
  24. 根据权利要求21或22所述的终端，其特征在于，所述每个子载波组包括2个子载波。
  25. 根据权利要求24所述的终端，其特征在于，所述参考信号在每个子载波组中占用的子载波为频率最高的子载波或者最低的子载波。
  26. 根据权利要求21所述的终端，其特征在于，所述每个子载波组包括3个或3个以上的子载波。
  27. 一种终端，其特征在于，所述终端包括存储器、处理器、总线和收发器，存储器中存储代码和数据，处理器与存储器通过总线连接，处理器运行存储器中的代码使得终端执行权利要求8-14中任一项所提供的参考信号配置方法。
  28. 一种基站，其特征在于，所述基站包括:存储器、处理器、总线和收发器，存储器中存储代码和数据，处理器与存储器通过总线连接，处理器运行存储器中的代码使得基站执行权利要求1-7中任一项所提供的参考信号配置方法。
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