WO2020164537A1 - 参考信号生成的方法及通信设备 - Google Patents

参考信号生成的方法及通信设备 Download PDF

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Publication number
WO2020164537A1
WO2020164537A1 PCT/CN2020/075028 CN2020075028W WO2020164537A1 WO 2020164537 A1 WO2020164537 A1 WO 2020164537A1 CN 2020075028 W CN2020075028 W CN 2020075028W WO 2020164537 A1 WO2020164537 A1 WO 2020164537A1
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Prior art keywords
reference signal
target reference
modulation
communication device
dmrs
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PCT/CN2020/075028
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English (en)
French (fr)
Inventor
孙晓东
刘昊
孙鹏
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维沃移动通信有限公司
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Priority to KR1020217028684A priority Critical patent/KR20210121244A/ko
Priority to SG11202108870WA priority patent/SG11202108870WA/en
Priority to BR112021016061-2A priority patent/BR112021016061A2/pt
Priority to EP20756280.2A priority patent/EP3926877A4/en
Priority to JP2021547090A priority patent/JP7250944B2/ja
Publication of WO2020164537A1 publication Critical patent/WO2020164537A1/zh
Priority to US17/403,218 priority patent/US20210377087A1/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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • 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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • 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
    • H04L27/26035—Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the embodiments of the present disclosure relate to the field of communication technologies, and in particular, to a method for generating a reference signal and a communication device.
  • the reference signals of the service and control channels are generated by the PN sequence or the ZC sequence.
  • the physical uplink shared channel Physical Uplink Shared Channel, PUSCH
  • the physical uplink control channel Physical Uplink Control Channel, PUCCH
  • transmission precoding also called DFT-s-OFDM waveform
  • demodulation reference signal Demodulation Reference
  • PAPR peak to average power ratio
  • the embodiments of the present disclosure provide a method and communication device for generating a reference signal to solve the problem of high PAPR of DMRS symbols.
  • a method for generating a reference signal applied to a first communication device including:
  • the first modulation includes any one of the following: ⁇ /2-binary phase shift keying BPSK modulation, and 8-phase shift keying PSK modulation; the indication information is used to instruct the first communication device to use all The target reference signal transmission.
  • a first communication device including:
  • the first generating module is configured to, when receiving the instruction information from the second communication device, firstly modulate at least one of the target reference signal sequences, and then generate the target reference signal through discrete Fourier transform modulation, wherein, The first modulation includes any one of the following: ⁇ /2-BPSK modulation, and 8-PSK modulation; the indication information is used to instruct the first communication device to use the target reference signal for transmission.
  • a communication device including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being processed by the The steps of the reference signal generation method described above are implemented when the device is executed.
  • a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned reference signal is realized Steps of the generated method.
  • the PAPR of the DMRS symbol is higher than the PAPR of the data symbol, and the uplink coverage performance can be improved.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the disclosure
  • FIG. 2 is a flowchart of a method for generating a reference signal according to an embodiment of the disclosure
  • FIG. 3 is a structural diagram of a first communication device according to an embodiment of the disclosure.
  • Fig. 4 is a structural diagram of a communication device according to an embodiment of the disclosure.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present disclosure should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • LTE-Advanced LTE-Advanced, LTE-A
  • LTE-A LTE/LTE evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the terms “system” and “network” are often used interchangeably.
  • the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
  • UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
  • the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
  • OFDMA system can realize such as Ultra Mobile Broadband (UMB), Evolved UTRA ((Evolution-UTRA, E-UTRA)), IEEE 802.11 ((Wi-Fi)), IEEE 802.16 ((WiMAX)), IEEE 802.20, Flash-OFDM and other radio technologies.
  • UMB Ultra Mobile Broadband
  • Evolved UTRA (Evolution-UTRA, E-UTRA)
  • IEEE 802.11 (Wi-Fi)
  • IEEE 802.16 (WiMAX)
  • IEEE 802.20 Flash-OFDM and other radio technologies.
  • UMB Ultra Mobile Broadband
  • Evolved UTRA (Evolution-U
  • LTE and more advanced LTE are new UMTS versions that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
  • the technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies.
  • the wireless communication system may include: a network device 10 and a terminal.
  • the terminal is denoted as User Equipment (UE) 11, and the UE 11 may communicate with the network device 10 (transmit signaling or data).
  • UE User Equipment
  • the connection between the above-mentioned various devices may be a wireless connection.
  • a solid line is used in FIG. 1 to indicate.
  • the foregoing communication system may include multiple UEs 11, and the network device 10 may communicate with multiple UEs 11.
  • the terminal provided by the embodiment of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), and a mobile Internet device (Mobile Internet).
  • UMPC ultra-mobile personal computer
  • PDA personal digital assistant
  • Mobile Internet Mobile Internet
  • Device MID
  • Wearable Device Wearable Device
  • vehicle-mounted equipment etc.
  • the network device 10 provided by the embodiment of the present disclosure may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (for example, the following Equipment such as next generation node base station (gNB) or transmission and reception point (TRP)).
  • eNB evolved node base station
  • 5G system for example, the following Equipment such as next generation node base station (gNB) or transmission and reception point (TRP)).
  • gNB next generation node base station
  • TRP transmission and reception point
  • the following first introduces the manner in which the DMRS sequence is generated by the low PAPR sequence.
  • the DMRS sequence is generated using a low PAPR sequence (also called a Zadoff-Chu sequence).
  • Zadoff-Chu sequence is generated by computer search.
  • an embodiment of the present disclosure provides a method for generating a reference signal.
  • the execution subject of the method is a first communication device.
  • the first communication device may be a terminal, and the second communication device may be a network device;
  • the first communication device may be a network device, and the second communication device may be a terminal.
  • the specific steps include: step 201.
  • Step 201 When receiving the instruction information from the second communication device, firstly modulate at least one of the target reference signal sequences, and then modulate the target reference signal by discrete Fourier transform, wherein the first Modulation includes any one of the following: ⁇ /2-BPSK modulation and 8-PSK modulation; the indication information is used to instruct the first communication device to use the target reference signal for transmission, in other words, the indication information is related to the target reference signal, For the sake of brevity, I won't repeat them below.
  • the target At least one first modulation in the reference signal sequence generates a target reference signal.
  • the physical channel demodulation reference signal includes one or more of the following: PUSCH DMRS, Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) DMRS, Physical Sidelink Shared Channel (Physical Sidelink Shared Channel) Channel, PSSCH) DMRS, PUCCH DMRS, Physical Downlink Control Channel (PDCCH) DMRS, Physical Sidelink Control Channel (PSCCH) DMRS, Physical Broadcast Channel (Physical broadcast channel, PBCH) DMRS.
  • PUSCH DMRS Physical Downlink Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • PSSCH Physical Sidelink Shared Channel
  • PUCCH Physical Downlink Control Channel
  • PUCCH Physical Downlink Control Channel
  • PSCCH Physical Sidelink Control Channel
  • PBCH Physical Broadcast Channel
  • the channel state information acquisition reference signal includes one or more of the following: sounding reference signal (Sounding Reference Signal, SRS), channel state information reference signal (Channel State Information-Reference Signal, CSI) -RS).
  • Sounding Reference Signal Sounding Reference Signal
  • CSI Channel State Information-Reference Signal
  • the physical channel can be at least one of a traffic channel, a control channel, and a broadcast channel.
  • the reference signal may include at least: at least one of DMRS and SRS.
  • the second communication device is a network device, and the indication information is transmitted through radio resource control (Radio Resource Control, RRC) signaling or downlink control information (Downlink Control Information, DCI).
  • RRC Radio Resource Control
  • DCI Downlink Control Information
  • the target reference signal sequence includes at least one of the sequences in Table 1.
  • Table 1 A sequence table suitable for Computer Generated Sequence (CGS)-6.
  • the target reference signal can be generated based on at least one sequence in the index 0-14 in the sequence shown in Table 1, that is, at least one sequence in the index 0-14 in the sequence shown in Table 1, first modulates, and then passes Discrete Fourier transform modulation generates the target reference signal, wherein the first modulation includes any one of the following: ⁇ /2-BPSK modulation, and 8-PSK modulation.
  • the time domain-orthogonal cover coding is [+1, +1].
  • the frequency domain-orthogonal cover coding is [+1, +1].
  • the TD-OCC and FD-OCC when the target reference signal resource is mapped may both be [+1, +1].
  • the influence of the OCC sequence on the target reference signal shift autocorrelation, PAPR, cross-correlation, and demodulation performance can be avoided.
  • the method shown in FIG. 2 may further include: generating the target reference signal sequence according to a predetermined rule;
  • the predetermined rule may include one or more of the following:
  • the reference signal modulation symbol shift autocorrelation average value of the target reference signal is the smallest, for example, the reference signal modulation symbol shift autocorrelation average value of the target reference signal is less than 0.5;
  • the PAPR value of the corresponding time domain symbol is the smallest, for example, the PAPR value is less than 2.5dB;
  • the average value of cross-correlation between reference signal modulation symbols of the target reference signal is the smallest, for example, the average value of cross-correlation between reference signal modulation symbols of the target reference signal is less than 0.5;
  • SINR Signal to Interference plus Noise Ratio
  • the PAPR of the DMRS symbol is higher than the PAPR of the data symbol, which can improve the power amplifier efficiency of the transmitting end, reduce power consumption, and improve the demodulation performance of the receiving end, and improve the uplink cover.
  • the modulation method is: (1) firstly undergo ⁇ /2-BPSK modulation, and then undergo discrete Fourier transform modulation; or (2) firstly undergo 8-PSK modulation , And Discrete Fourier Transform, when the number of resources is 1 Physical Resource Block (PRB), preferably, the DMRS of PUSCH is generated based on at least one sequence in the index 0-14 in the sequence shown in Table 1. , Produced by DFT modulation.
  • PRB Physical Resource Block
  • the modulation method is: (1) first modulated by ⁇ /2-BPSK, and then modulated by discrete Fourier transform; or (2) modulated by 8-PSK first , And Discrete Fourier Transform.
  • the number of resources is 1 PRB and the DMRS port is 1, DMRS resource mapping uses FD-OCC as [+1,+1], and does not use FD-OCC in related technologies as [+ 1,-1].
  • the embodiment of the present disclosure also provides a first communication device. Since the principle of the first communication device to solve the problem is similar to the method for generating the reference signal in the embodiment of the present disclosure, the implementation of the network device can refer to the implementation of the method. The place will not be explained here.
  • an embodiment of the present disclosure further provides a first communication device, and the first communication device 300 includes:
  • the first generating module 301 is configured to, when receiving the instruction information from the second communication device, firstly modulate at least one of the target reference signal sequences, and then generate the target reference signal through discrete Fourier transform modulation;
  • the first modulation includes any of the following: (1) ⁇ /2-BPSK modulation, and (2) 8-PSK modulation; the indication information is used to instruct the first communication device to use the target reference Signal transmission.
  • the target reference signal sequence includes at least one of the following sequences:
  • the target reference signal sequence further includes at least one of the following sequences:
  • the TD-OCC is [+1, +1].
  • the FD-OCC is [+1, +1].
  • the first generating module 301 is further configured to: when the physical channel demodulation reference signal or the channel state information acquisition reference signal is transmitted based on the transmission precoding, the target reference signal sequence At least one of them is first modulated and then modulated by discrete Fourier transform to generate the target reference signal.
  • the physical channel demodulation reference signal includes one or more of the following: PUSCH DMRS, PDSCH DMRS, PSSCH DMRS, PUCCH DMRS, PDCCH DMRS, PSCCH DMRS, PBCH DMRS.
  • the channel state information acquisition reference signal includes one or more of the following: SRS and CSI-RS.
  • the first communication device further includes:
  • the second generation module is configured to generate the target reference signal sequence according to a predetermined rule
  • the predetermined rule includes one or more of the following:
  • the reference signal modulation symbol of the target reference signal has the smallest mean shift autocorrelation
  • the reference signal modulation symbol of the target reference signal undergoes inverse Fourier transform and the peak-to-average power ratio of the corresponding time-domain symbol is the smallest PAPR value;
  • the average value of the cross-correlation between reference signal modulation symbols of the target reference signal is the smallest
  • the demodulation performance of the reference signal sequence meets specific requirements.
  • the first communication device provided in the embodiment of the present disclosure can execute the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • FIG. 4 is a structural diagram of a communication device applied in an embodiment of the present disclosure.
  • the communication device 400 includes a processor 401, a transceiver 402, a memory 403, and a bus interface, where:
  • the communication device 400 further includes: a program stored in the memory 403 and capable of running on the processor 401, and the program is executed by the processor 401 to implement the following steps:
  • a program stored in the memory 403 and capable of running on the processor 401, and the program is executed by the processor 401 to implement the following steps:
  • the first modulation includes any one of the following: (1) ⁇ / 2-BPSK modulation, and (2) 8-PSK modulation;
  • the indication information is used to instruct the first communication device to use the target reference signal for transmission.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 401 and various circuits of the memory represented by the memory 403 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 402 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 401 is responsible for managing the bus architecture and general processing, and the memory 403 can store data used by the processor 401 when performing operations.
  • the communication device provided in the embodiments of the present disclosure can execute the foregoing method embodiments, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • the embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the method embodiment for supporting time-sensitive communication service quality is realized , And can achieve the same technical effect, in order to avoid repetition, I will not repeat it here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) )
  • a storage medium such as ROM/RAM, magnetic disk, optical disk
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本公开提供一种参考信号生成的方法及通信设备，该方法包括：当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，其中，所述第一调制包括以下任意一项：π/2-BPSK调制，和8-PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。

Description

参考信号生成的方法及通信设备
相关申请的交叉引用
本申请主张在2019年2月15日在中国提交的中国专利申请号No.201910117787.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开实施例涉及通信技术领域，尤其涉及一种参考信号生成的方法及通信设备。
背景技术
相关技术中的新空口(New Radio，NR)移动通信系统中，业务和控制信道的参考信号由PN序列或ZC序列产生。当物理上行共享信道(Physical Uplink Shared Channel，PUSCH)或物理上行控制信道(Physical Uplink Control Channel，PUCCH)采用传输预编码(也称为DFT-s-OFDM波形)时，解调参考信号(Demodulation Reference Signal，DMRS)符号的峰值平均功率比(Peak to Average Power Ratio，PAPR)相对数据符号的PAPR较高，影响上行覆盖性能。
发明内容
本公开实施例提供一种参考信号生成的方法及通信设备，解决DMRS符号的PAPR较高的问题。
依据本公开实施例的第一方面，提供了一种参考信号生成的方法，应用于第一通信设备，包括：
当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号；
其中，所述第一调制包括以下任意一项：π/2-二进制相移键控BPSK调制，和8-相移键控PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
依据本公开实施例的第二方面，还提供了一种第一通信设备，包括：
第一生成模块，用于当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，其中，所述第一调制包括以下任意一项：π/2-BPSK调制，和8-PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
依据本公开实施例的第三方面，还提供了一种通信设备，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如上所述的参考信号生成的方法的步骤。
依据本公开实施例的第四方面，还提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如上所述的参考信号生成的方法的步骤。
通过本公开实施例，可以避免当PUSCH或PUCCH采用传输预编码时，DMRS符号的PAPR相对数据符号的PAPR高，可以提高上行覆盖性能。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本公开实施例的无线通信系统的架构示意图；
图2为本公开实施例的参考信号生成的方法的流程图；
图3为本公开实施例的第一通信设备的结构图；
图4为本公开实施例的通信设备的结构图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创 造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本公开实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本公开实施例中被描述为“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。
本文所描述的技术不限于5G系统以及后续演进通信系统，以及不限于LTE/LTE的演进(LTE-Advanced，LTE-A)系统，并且也可用于各种无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。
术语“系统”和“网络”常被可互换地使用。CDMA系统可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access，UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access，WCDMA)和其他CDMA变体。TDMA系统可实现诸如全球移动通信系统(Global System for Mobile Communication，GSM)之类的无线电技术。OFDMA系统可实现诸如超移动宽带(Ultra Mobile Broadband，UMB)、演进型UTRA((Evolution-UTRA，E-UTRA))、IEEE 802.11((Wi-Fi))、IEEE 802.16((WiMAX))、IEEE 802.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信系统(Universal Mobile Telecommunications System，UMTS)的部分。LTE和更高级的LTE(如LTE-A)是使用E-UTRA的新UMTS版本。UTRA、 E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project，3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。
下面结合附图介绍本公开的实施例。本公开实施例提供的参考信号生成的方法可以应用于无线通信系统中。参考图1，为本公开实施例提供的一种无线通信系统的架构示意图。如图1所示，该无线通信系统可以包括：网络设备10和终端，终端记做用户设备(User Equipment，UE)11，UE11可以与网络设备10通信(传输信令或传输数据)。在实际应用中上述各个设备之间的连接可以为无线连接，为了方便直观地表示各个设备之间的连接关系，图1中采用实线示意。需要说明的是，上述通信系统可以包括多个UE11，网络设备10可以与多个UE11通信。
本公开实施例提供的终端可以为手机、平板电脑、笔记本电脑、超级移动个人计算机(Ultra-Mobile Personal Computer，UMPC)、上网本或者个人数字助理(Personal Digital Assistant，PDA)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备等。
本公开实施例提供的网络设备10可以为基站，该基站可以为通常所用的基站，也可以为演进型基站(evolved node base station，eNB)，还可以为5G系统中的网络设备(例如，下一代基站(next generation node base station，gNB)或发送和接收点(transmission and reception point，TRP))等设备。
为了便于理解本公开实施例，下面先介绍DMRS序列采用低PAPR序列产生的方式。
NR系统中，当PUSCH和PUCCH采用传输预编码时，DMRS序列采用低PAPR序列(也称为Zadoff-Chu序列)产生。
当DMRS序列长度为6、12、18、24时，Zadoff-Chu序列通过计算机搜索产生。
参见图2，本公开实施例提供一种参考信号生成的方法，该方法的执行 主体为第一通信设备，需要说明的是，第一通信设备可以为终端，第二通信设备可以为网络设备；或者，第一通信设备可以为网络设备，第二通信设备可以为终端。具体步骤包括：步骤201。
步骤201：当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，其中，所述第一调制包括以下任意一项：π/2-BPSK调制，和8-PSK调制；该指示信息用于指示第一通信设备采用目标参考信号传输，换言之，所述指示信息与所述目标参考信号有关，简洁起见，下文不再赘述。
在本公开实施例中，可选地，当物理信道解调参考信号或信道状态信息获取参考信号基于传输预编码传输，且第二通信设备指示第一通信设备采用目标参考信号传输时，利用目标参考信号序列中的至少一个第一调制生成目标参考信号。
在本公开实施例中，可选地，物理信道解调参考信号包括以下一项或多项：PUSCH DMRS、物理下行共享信道(Physical Downlink Shared Channel，PDSCH)DMRS、物理Sidelink共享信道(Physical Sidelink Shared Channel，PSSCH)DMRS、PUCCH DMRS、物理下行控制信道(Physical Downlink Control Channel，PDCCH)DMRS、物理Sidelink控制信道(Physical Sidelink Control Channel，PSCCH)DMRS、物理广播信道(Physical broadcast channel，PBCH)DMRS。
在本公开实施例中，可选地，信道状态信息获取参考信号包括以下一项或多项：探测参考信号(Sounding Reference Signal，SRS)、信道状态信息参考信号(Channel State Information-Reference Signal，CSI-RS)。
其中，物理信道可以业务信道、控制信道和广播信道中的至少一项。参考信号可以至少包括：DMRS和SRS中的至少一项。
示例性地，第二通信设备为网络设备，指示信息通过无线资源控制(Radio Resource Control，RRC)信令或下行控制信息(Downlink Control Information，DCI)传输。
当所述目标参考信号占用的子载波数为6时，所述目标参考信号序列包括表1中序列中的至少一项。
表1：为适用于计算机产生序列(Computer Generated Sequence，CGS)-6的序列表。
Figure PCTCN2020075028-appb-000001
优选地，目标参考信号可以基于表1所示序列中索引0-14中的至少一个序列产生，即表1所示序列中索引0-14中的至少一个序列，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，其中，所述第一调制包括以下任意一项：π/2-BPSK调制，和8-PSK调制。
在本公开实施例中，可选地，目标参考信号资源映射时，对于任意DMRS端口，时域-正交覆盖编码(TD-OCC)为[+1，+1]。
在本公开实施例中，可选地，目标参考信号资源映射时，对于任意DMRS端口，频域-正交覆盖编码(FD-OCC)为[+1，+1]。
示例性地，目标参考信号资源映射时的TD-OCC和FD-OCC可以均为[+1，+1]。
基于上述OCC序列，可避免OCC序列对目标参考信号移位自相关、PAPR、互相关、解调性能的影响。
在本公开实施例中，可选地，图2所示的方法还可以包括：按照预定规则生成所述目标参考信号序列；
其中，所述预定规则可以包括以下一项或多项：
(1)所述目标参考信号的参考信号调制符号间移位自相关均值最小，例如，所述目标参考信号的参考信号调制符号间移位自相关均值小于0.5；
(2)所述目标参考信号的参考信号调制符号经过逆傅里叶变换后对应时域符号的PAPR值最小，例如，PAPR值小于2.5dB；
(3)所述目标参考信号的参考信号调制符号间互相关均值最小，例如所述目标参考信号的参考信号调制符号间互相关均值小于0.5；
(4)所述参考信号序列解调性能满足特定要求。例如：相同信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)下，误块率(Block Error Rate，BLER)最小，例如SINR＝-5时，BLER<5％。
通过本公开实施例，可以避免当PUSCH或PUCCH采用传输预编码时，DMRS符号的PAPR相对数据符号的PAPR高，可提高发射端功放效率、降低功耗，以及提高接收端解调性能、提高上行覆盖。
示例1：
当网络侧指示终端PUSCH采用DFT-s-OFDM波形传输，调制方式为：(1)先经过π/2-BPSK调制，再经过离散傅里叶变换调制；或者(2)先经过8-PSK 调制，再和离散傅里叶变换，资源数为1个物理资源块(Physical Resource Block，PRB)时，优选地，PUSCH的DMRS基于表1所示序列中的索引0-14中的至少一个序列产生，经过DFT调制产生。
示例2：
当网络侧指示终端PUSCH采用DFT-s-OFDM波形传输，调制方式为：(1)先经过π/2-BPSK调制，再经过离散傅里叶变换调制；或者(2)先经过8-PSK调制，再和离散傅里叶变换，资源数为1个PRB，DMRS端口为1时，DMRS资源映射采用FD-OCC为[+1,+1]，不采用相关技术中的FD-OCC为[+1,-1]。
本公开实施例中还提供了一种第一通信设备，由于第一通信设备解决问题的原理与本公开实施例中参考信号生成的方法相似，因此该网络设备的实施可以参见方法的实施，重复之处不再敷述。
参见图3，本公开实施例还提供一种第一通信设备，该第一通信设备300包括：
第一生成模块301，用于当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号；
其中，所述第一调制包括以下任意一项：(1)π/2-BPSK调制，和(2)8-PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
在本公开实施例中，可选地，当所述目标参考信号占用的子载波数为6时，所述目标参考信号序列包括以下序列中的至少一项：
7、3、－1、－5、－1、3；
7、－5、7、－5、7、3；
5、－7、5、－7、－3、－7；
3、1、5、1、5、－7；
1、5、－7、7、1、5；
7、－5、3、5、－1、－7；
3、－1、3、－3、－5、－1；
5、－7、7、1、5、1；
－3、7、－5、－1、－5、－1；
5、－1、－3、－1、5、－5；
7、－7、1、5、3、－3；
7、1、7、－3、－1、－3；
7、1、－5、－7、－5、1；
－5、5、－1、－3、－1、5；
－5、－1、－7、7、－5、－1。
在本公开实施例中，可选地，所述目标参考信号序列还包括以下序列中的至少一项：
5、7、－3、－5、5、－5；
－1、1、5、－5、7、3；
3、5、－1、5、－1、－3；
7、－7、5、1、－3、3；
7、－1、－3、5、－7、5；
7、5、－7、1、－3、7；
－1、－3、3、5、－1、5；
7、－1、3、1、1、－5；
－3、－5、－5、5、1、－7；
5、－7、7、1、5、1；
3、－7、－3、－1、－5、7；
7、1、－5、－7、－5、1；
－7、5、7、－5、1、－3；
－5、5、－1、－3、－1、5；
－5、－1、－7、7、－5、－1。
在本公开实施例中，可选地，所述目标参考信号资源映射时，对于任意DMRS端口，TD-OCC为[+1，+1]。
在本公开实施例中，可选地，所述目标参考信号资源映射时，对于任意DMRS端口，FD-OCC为[+1，+1]。
在本公开实施例中，可选地，所述第一生成模块301进一步用于：当物理信道解调参考信号或信道状态信息获取参考信号基于传输预编码传输时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号。
在本公开实施例中，可选地，所述物理信道解调参考信号包括以下一项或多项：PUSCH DMRS、PDSCH DMRS、PSSCH DMRS、PUCCH DMRS、PDCCH DMRS、PSCCH DMRS、PBCH DMRS。
在本公开实施例中，可选地，所述信道状态信息获取参考信号包括以下一项或多项：SRS、CSI-RS。
在本公开实施例中，可选地，所述第一通信设备还包括：
第二生成模块，用于按照预定规则生成所述目标参考信号序列；
其中，所述预定规则包括以下一项或多项：
所述目标参考信号的参考信号调制符号间移位自相关均值最小；
所述目标参考信号的参考信号调制符号经过逆傅里叶变换后对应时域符号的峰值平均功率比PAPR值最小；
所述目标参考信号的参考信号调制符号间互相关均值最小；
所述参考信号序列解调性能满足特定要求。
本公开实施例提供的第一通信设备，可以执行上述方法实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
请参阅图4，图4是本公开实施例应用的通信设备的结构图，如图4所示，通信设备400包括：处理器401、收发机402、存储器403和总线接口，其中：
在本公开的一个实施例中，通信设备400还包括：存储在存储器上403并可在处理器401上运行的程序，程序被处理器401执行时实现如下步骤：当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号；其中，所述第一调制包括以下任意一项：(1)π/2-BPSK调制，和(2)8-PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
在图4中，总线架构可以包括任意数量的互联的总线和桥，具体由处理 器401代表的一个或多个处理器和存储器403代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机402可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。
处理器401负责管理总线架构和通常的处理，存储器403可以存储处理器401在执行操作时所使用的数据。
本公开实施例提供的通信设备，可以执行上述方法实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
本公开实施例还提供一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现上述支持时间敏感通信服务质量的方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上 述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (12)

  1. 一种参考信号生成的方法，应用于第一通信设备，包括：
    当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号；
    其中，所述第一调制包括以下任意一项：π/2-二进制相移键控BPSK调制，和8-相移键控PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
  2. 根据权利要求1所述的方法，其中，
    当所述目标参考信号占用的子载波数为6时，所述目标参考信号序列包括以下序列中的至少一项：
    7、3、－1、－5、－1、3；
    7、－5、7、－5、7、3；
    5、－7、5、－7、－3、－7；
    3、1、5、1、5、－7；
    1、5、－7、7、1、5；
    7、－5、3、5、－1、－7；
    3、－1、3、－3、－5、－1；
    5、－7、7、1、5、1；
    －3、7、－5、－1、－5、－1；
    5、－1、－3、－1、5、－5；
    7、－7、1、5、3、－3；
    7、1、7、－3、－1、－3；
    7、1、－5、－7、－5、1；
    －5、5、－1、－3、－1、5；
    －5、－1、－7、7、－5、－1。
  3. 根据权利要求2所述的方法，其中，所述目标参考信号序列还包括以下序列中的至少一项：
    5、7、－3、－5、5、－5；
    －1、1、5、－5、7、3；
    3、5、－1、5、－1、－3；
    7、－7、5、1、－3、3；
    7、－1、－3、5、－7、5；
    7、5、－7、1、－3、7；
    －1、－3、3、5、－1、5；
    7、－1、3、1、1、－5；
    －3、－5、－5、5、1、－7；
    5、－7、7、1、5、1；
    3、－7、－3、－1、－5、7；
    7、1、－5、－7、－5、1；
    －7、5、7、－5、1、－3；
    －5、5、－1、－3、－1、5；
    －5、－1、－7、7、－5、－1。
  4. 根据权利要求1所述的方法，其中，所述目标参考信号资源映射时，对于任意解调参考信号DMRS端口，时域-正交覆盖编码TD-OCC为[+1，+1]。
  5. 根据权利要求1所述的方法，其中，所述目标参考信号资源映射时，对于任意DMRS端口，频域-正交覆盖编码FD-OCC为[+1，+1]。
  6. 根据权利要求1所述的方法，其中，所述将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，包括：
    当物理信道解调参考信号或信道状态信息获取参考信号基于传输预编码传输时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号。
  7. 根据权利要求6所述的方法，其中，所述物理信道解调参考信号包括以下一项或多项：物理上行共享信道解调参考信号PUSCH DMRS、物理下行共享信道解调参考信号PDSCH DMRS、物理侧链路Sidelink共享信道解调参考信号PSSCH DMRS、物理上行控制信道解调参考信号PUCCH DMRS、物理下行控制 信道解调参考信号PDCCH DMRS、物理Sidelink控制信道解调参考信号PSCCH DMRS、物理广播信道解调参考信号PBCH DMRS。
  8. 根据权利要求6所述的方法，其中，所述信道状态信息获取参考信号包括以下一项或多项：探测参考信号SRS、信道状态信息参考信号CSI-RS。
  9. 根据权利要求1所述的方法，还包括：
    按照预定规则生成所述目标参考信号序列；
    其中，所述预定规则包括以下一项或多项：
    所述目标参考信号的参考信号调制符号间移位自相关均值最小；
    所述目标参考信号的参考信号调制符号经过逆傅里叶变换后对应时域符号的峰值平均功率比PAPR值最小；
    所述目标参考信号的参考信号调制符号间互相关均值最小；
    所述参考信号序列解调性能满足特定要求。
  10. 一种第一通信设备，包括：
    第一生成模块，用于当从第二通信设备接收到指示信息时，将目标参考信号序列中的至少一个，先经过第一调制，再经过离散傅里叶变换调制生成目标参考信号，其中，所述第一调制包括以下任意一项：π/2-BPSK调制，和8-PSK调制；所述指示信息用于指示所述第一通信设备采用所述目标参考信号传输。
  11. 一种通信设备，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求1至9中任一项所述的参考信号生成的方法的步骤。
  12. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述的参考信号生成的方法的步骤。
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