WO2018045984A1 - 一种参数配置方法、装置及存储介质 - Google Patents

一种参数配置方法、装置及存储介质 Download PDF

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WO2018045984A1
WO2018045984A1 PCT/CN2017/100931 CN2017100931W WO2018045984A1 WO 2018045984 A1 WO2018045984 A1 WO 2018045984A1 CN 2017100931 W CN2017100931 W CN 2017100931W WO 2018045984 A1 WO2018045984 A1 WO 2018045984A1
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length
cyclic prefix
cyclic
determining
parameter configuration
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PCT/CN2017/100931
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English (en)
French (fr)
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左志松
郝鹏
戴博
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
    • 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
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
    • 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
    • H04L5/0008—Wavelet-division

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a parameter configuration method, apparatus, and storage medium.
  • Orthogonal Frequency Division Multiplexing is a modulation method of wireless signals.
  • the signal subcarriers are mapped to the Inverse Fast Fourier Transform (IFFT) input.
  • IFFT Inverse Fast Fourier Transform
  • the result of the IFFT transform is used as the result.
  • CP Cyclic Prefix
  • a certain number of samples at the tail of the signal generated based on the above method are copied to the front of the signal as a CP, thereby forming a complete symbol (Symbol); the CP can protect the multipath component of the signal to prevent interference between symbols.
  • the length of the symbol is also variable depending on the difference in the value of the N point and the spacing of the subcarriers.
  • the device transmits data by transmitting consecutive symbols, and the device transmits
  • the schematic diagram of the continuous signal, as shown in FIG. 1, includes an air signal of a plurality of consecutive symbols, and the symbol length is not fixed.
  • FIG. 2 Schematic diagram of OFDM signal generation, as shown in FIG. 2, devices of different transmission bandwidths can also be frequency-multiplexed together in OFDM uplink signals to receive and decode for the same radio access device.
  • the UEs with different transmission bandwidths need to be frequency-multiplexed into the same frame, and their parameters such as the sampling rate and the number of FFT points are different. Therefore, the CPs of different bandwidths cannot be aligned in time, which leads to a decrease in the effective CP length and an increase in the difference. Interference between OFDM parameters.
  • the embodiment of the present invention is to provide a parameter configuration method, device, and storage medium, which can make CPs of different bandwidths approximately aligned in time, reduce interference between different OFDM parameters, and reduce the sampling rate of the device.
  • An embodiment of the present invention provides a parameter configuration method, where the method includes: determining an orthogonal frequency division multiplexing wireless signal to form a number of cyclic prefixes of a time slot; and determining a length of the cyclic prefix.
  • the determining the number of cyclic prefixes of the orthogonal frequency division multiplexing wireless signals to form a time slot comprises:
  • Determining the number of the cyclic prefix is a cyclic prefix having a fifth length and six having a sixth
  • the determining the length of the cyclic prefix comprises: determining that the first length is
  • Orthogonal frequency division multiplexing symbol period T 10 times the second length is 8T; determining the third length is 12T, the fourth length is 8T; determining the fifth length is 16T, the first The four lengths are 8T.
  • the method further includes determining, according to the length of the cyclic prefix, the distribution of the cyclic prefix as:
  • the content of the cyclic prefix signal is consistent with the content of the frequency division multiplexing symbol corresponding to the cyclic prefix that is equal to the length of the cyclic prefix.
  • the embodiment of the invention further discloses a parameter configuration device, the device comprising: a first determining module and a second determining module; wherein
  • the first determining module is configured to determine, according to the orthogonal frequency division multiplexing radio signal, a number of cyclic prefixes that form a time slot;
  • the second determining module is configured to determine a length of the cyclic prefix.
  • the first determining module is specifically configured to determine that the number of the cyclic prefix is four cyclic prefixes having a first length and three cyclic prefixes having a second length; or
  • determining the number of the cyclic prefix is a cyclic prefix having a fifth length and six cyclic prefixes having a sixth length.
  • the second determining module is configured to determine that the first length is 10 times of an orthogonal frequency division multiplexing symbol period T, and the second length is 8T;
  • the fifth length is 16T and the fourth length is 8T.
  • the apparatus further includes: a third determining module, configured to determine, according to the length of the cyclic prefix, the distribution of the cyclic prefix:
  • the content of the cyclic prefix signal is consistent with the content of the frequency division multiplexing symbol corresponding to the cyclic prefix that is equal to the length of the cyclic prefix.
  • An embodiment of the present invention further provides a parameter configuration apparatus, including: a memory configured to store an executable program;
  • a processor configured to execute by executing an executable program stored in the memory:
  • the length of the cyclic prefix is determined.
  • the embodiment of the invention further provides a storage medium storing an executable program, when the executable program is executed by the processor, executing:
  • the length of the cyclic prefix is determined.
  • the parameter configuration method, device and storage medium provided by the embodiments of the present invention determine the number and length of CPs that form an OFDM wireless signal in a time slot, and provide a preferred distribution of CPs in a time slot; thus, in the same system bandwidth At least four different OFDM parameters can be pre-frequency Multiplexing and minimal interference between each other; when the at least two different OFDM parameters are multiplexed with LTE, the symbols can be approximately aligned, reducing the interference between different OFDM parameters. .
  • FIG. 1 is a schematic diagram of a continuous signal transmitted by a device according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of OFDM signal generation according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of subcarrier mapping of an OFDM according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an optional process flow of a parameter configuration method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of coexistence of OFDM parameters of different sampling rates according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an optional structure of a parameter configuration apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of hardware components of a parameter configuration apparatus according to an embodiment of the present invention.
  • OFDM orthogonal frequency division multiplexing
  • Each frame of OFDM contains a plurality of symbols, and the lengths of the symbols may be different; since the OFDM signal belongs to a digital signal, the sampling frequency of the OFDM signal is constant within the frame. Therefore, the symbol length has a corresponding relationship with the number of sampling points occupied by the symbol.
  • the schematic diagram of the subcarrier mapping of OFDM, as shown in FIG. 3, can be seen that the symbol length is consistent with the input point value N of the IFFT.
  • different OFDM parameters include: different subcarrier spacing, CP/GP Length, etc.
  • Different types of OFDM parameters are used for frequency division multiplexing. If subcarrier spacing or symbol length is different, crosstalk between subcarriers may occur between different subbands.
  • different OFDM parameters should be kept as many times as possible; for example, different subcarrier spacings are integer multiples, different time domains.
  • the symbol length is an integer multiple relationship.
  • An optional schematic diagram of a process flow of a parameter configuration method includes the following steps:
  • Step 101 Determine the number of cyclic prefixes that the OFDM wireless signal constitutes a time slot.
  • one time slot is composed of OFDM symbols including 7 CPs, and the total length in the time domain is 960T; the parameter configuration apparatus determines that the number of the cyclic prefix is four cyclic prefixes having a first length And three cyclic prefixes having a second length; or determining that the number of the cyclic prefix is two cyclic prefixes having a third length and five cyclic prefixes having a fourth length; or determining the cyclic prefix The number is a cyclic prefix having a fifth length and six cyclic prefixes having a sixth length;
  • the first length, the second length, the third length, and the fourth length are all even numbers
  • n is a fraction of a positive integer or a positive integer
  • Step 102 Determine a length of the cyclic prefix.
  • the parameter configuration means determines that the first length is 10 times of the OFDM orthogonal frequency division multiplexing symbol period T by ensuring that the difference between the lengths is small, and the second length is 8T;
  • the third length is 12T, and the fourth length is 8T;
  • the fifth length is determined to be 16T, and the fourth length is 8T.
  • the distribution of the CP is ⁇ 10T*4, 8T*3 ⁇ , or ⁇ 12T*2, 8T*5 ⁇ , or ⁇ 16T*1, 8T*6 ⁇ ;
  • the content of the cyclic prefix signal is the same as the content of the OFDM symbol corresponding to the cyclic prefix, and the length of the OFDM symbol is 128T.
  • the length of the CP is A
  • the length is The content of the CP of A and the 128T long OFDM
  • the contents of the OFDM symbols whose length is A from the last bit in the symbol are identical.
  • the parameter configuration method further includes:
  • Step 103 Determine a distribution of the cyclic prefix according to a length of the cyclic prefix.
  • the parameter configuration means determines that the cyclic prefix has a distribution of ⁇ 10T, 8T, 10T, 8T, 10T, 8T, 10T ⁇ , or ⁇ 10T, 10T, 8T, 10T, 8T, 10T, 8T ⁇ ; Or, ⁇ 12T, 8T, 8T, 12T, 8T, 8T, 8T ⁇ , or ⁇ 12T, 8T, 8T, 8T, 12T, 8T, 8T ⁇ ; or, ⁇ 16T, 8T, 8T, 8T, 8T, 8T, 8T ⁇ .
  • the distribution of CPs in the preferred time slot of the periodicity of the embodiment of the present invention enables different OFDM parameters to be adjacent frequency multiplexed under the same system bandwidth and minimize interference between the multiplexed OFDM parameters.
  • each CP has a 128T long OFDM symbol, and the CP signal is in the time domain repeated in the time domain equal to the length of the CP.
  • the length of the CP of each OFDM symbol in the OFDM parameter is provided in the embodiment of the present invention, and the distribution of the CP in the preferred time slot is provided.
  • at least two different OFDMs are in the same system bandwidth.
  • the parameters may be frequency multiplexed with minimal interference between each other; the at least two different OFDM parameters utilize a very low sampling rate and LTE pre-frequency complex
  • the symbols can also be approximated to reduce the interference between different OFDM parameters; thus, by using appropriate m and n factor scaling, the sampling rate of the device is reduced, and the transmission and reception power consumption of the device is greatly reduced;
  • the setting is also relatively uniform in each frame.
  • the sampling rate of different OFDM parameters is a multiple relationship
  • the OFDM parameter can also be a multiple relationship between each CP point, thus simplifying the baseband processing process and the air interface. Settings.
  • each CP has a 128T long OFDM symbol, and the CP signal is in the time domain repeated in the time domain equal to the length of the CP.
  • the length of the CP of each OFDM symbol in the OFDM parameter is provided in the embodiment of the present invention, and the distribution of the CP in the preferred slot is provided. According to the embodiment of the present invention, at least three different OFDMs are in the same system bandwidth.
  • the parameters can be frequency-multiplexed and have minimal interference with each other; when the at least two different OFDM parameters are multiplexed with LTE, the symbols can also be approximately aligned to reduce different OFDM parameters.
  • the sampling rate of the device is reduced, and the transmission and reception power consumption of the device is greatly reduced; the setting of the CP is relatively uniform in each frame, when different OFDM
  • the OFDM parameter can also be a multiple relationship between each CP point, thus simplifying the baseband processing and air interface settings.
  • each CP has a 128T long OFDM symbol, and the CP signal is in the time domain repeated in the time domain equal to the length of the CP.
  • the length of the CP of each OFDM symbol in the OFDM parameter is provided in the embodiment of the present invention, and the distribution of the CP in the preferred time slot is provided. According to the embodiment of the present invention, at least four different OFDMs are in the same system bandwidth.
  • the parameters can be frequency-multiplexed and have minimal interference with each other; when the at least two different OFDM parameters are multiplexed with LTE, the symbols can also be approximately aligned to reduce different OFDM parameters.
  • the sampling rate of the device is reduced, and the transmission and reception power consumption of the device is greatly reduced; the setting of the CP is relatively uniform in each frame, when different
  • the sampling rate of the OFDM parameters is a multiple relationship, the OFDM parameter can be doubled between each CP point.
  • the number relationship which simplifies the baseband processing and air interface settings.
  • each CP has a 128T long OFDM symbol, and the CP signal is in the time domain repeated in the time domain equal to the length of the CP.
  • FIG. 5 A schematic diagram of coexistence of OFDM parameters of different sampling rates in the above embodiments of the present invention, as shown in FIG. 5, the sampling rates of two different OFDM parameters are different, and the subcarrier spacing and the symbol length are the same, so that unprotected band coexistence can be realized.
  • the length of the CP of each OFDM symbol in the OFDM parameter is provided in the embodiment of the present invention, and the distribution of the CP in the preferred time slot is provided.
  • at least two different OFDMs are in the same system bandwidth.
  • the parameters can be frequency-multiplexed and have minimal interference with each other; when the at least two different OFDM parameters are multiplexed with LTE, the symbols can also be approximately aligned to reduce different OFDM parameters.
  • the sampling rate of the device is reduced, and the transmission and reception power consumption of the device is greatly reduced; the setting of the CP is relatively uniform in each frame, when different
  • the OFDM parameter can also be a multiple relationship between each CP point, thus simplifying the setting of the baseband processing and the air interface.
  • an embodiment of the present invention further provides a parameter configuration apparatus.
  • An optional schematic diagram of the composition of the device, as shown in FIG. 6, includes: a first determining module 10 and a second determining module 20;
  • the first determining module 10 is configured to determine that the orthogonal frequency division multiplexing wireless signal forms a number of cyclic prefixes of the time slot;
  • the second determining module 20 is configured to determine a length of the cyclic prefix.
  • the first determining module 10 is configured to determine that the number of the cyclic prefix is four cyclic prefixes having a first length and three cyclic prefixes having a second length; or, determining the The number of cyclic prefixes is two cyclic prefixes having a third length and five cyclic prefixes having a fourth length; or, determining that the number of cyclic prefixes is a cyclic prefix having a fifth length and six having a A six-length cyclic prefix.
  • the second determining module is configured to determine that the first length is 10 times of an orthogonal frequency division multiplexing symbol period T, and the second length is 8T;
  • the fifth length is 16T and the fourth length is 8T.
  • the apparatus further includes: a third determining module 30, configured to determine, according to the length of the cyclic prefix, the distribution of the cyclic prefix:
  • the content of the cyclic prefix signal is consistent with the content of the frequency division multiplexing symbol corresponding to the cyclic prefix that is equal to the length of the cyclic prefix.
  • the CP length and the number of samples determined by the parameter configuration method and apparatus provided by the embodiments of the present invention are used for transmitting and receiving OFDM signals of the device.
  • the embodiment of the invention further provides a parameter configuration device, the hardware component structure of the parameter configuration device, comprising: a memory configured to store an executable program;
  • a processor configured to execute an executable program stored in the memory, executes:
  • the length of the cyclic prefix is determined.
  • the processor is configured to execute when the computer program is executed:
  • the number of the cyclic prefix is four cyclic prefixes having a first length and three cyclic prefixes having a second length;
  • the number of the cyclic prefix is two cyclic prefixes having a third length and five cyclic prefixes having a fourth length;
  • the number of the cyclic prefix is determined to be one cyclic prefix having a fifth length and six cyclic prefixes having a sixth length.
  • the processor is configured to execute when the computer program is executed:
  • the first length is 10 times of the orthogonal frequency division multiplexing symbol period T, and the second length is 8T;
  • the fifth length is 16T and the fourth length is 8T.
  • the processor is further configured to execute when the computer program is executed:
  • the processor is configured to execute when the computer program is executed:
  • the content of the cyclic prefix signal is consistent with the content of the frequency division multiplexing symbol corresponding to the cyclic prefix that is equal to the length of the cyclic prefix.
  • FIG. 7 is a schematic diagram showing the hardware structure of a parameter configuration apparatus according to another embodiment of the present invention.
  • the parameter configuration apparatus 700 includes at least one processor 701, a memory 702, and at least one communication interface 704.
  • the various components in parameter configuration device 700 are coupled together by bus system 705. It will be appreciated that the bus system 705 is used to implement connection communication between these components.
  • the bus system 705 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 705 in FIG.
  • memory 702 can be either volatile memory or non-volatile memory, and can include both volatile and nonvolatile memory.
  • the non-volatile memory may be a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), or an Erasable Programmable Read (EPROM). Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM), Ferromagnetic Random Access Memory (FRAM), Flash Memory, Magnetic Surface Memory , CD-ROM, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface memory can be a disk storage or a tape storage.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • SSRAM Dynamic Random Access
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRS Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • ESDRAM Synchronous Dynamic Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 702 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 702 in the embodiment of the present invention is used to store various types of data to support the operation of the parameter configuration apparatus 700.
  • Examples of such data include any computer program for operating on parameter configuration device 700, such as operating system 7021 and application 7022; contact data; phone book data; messages; pictures;
  • the operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 7022 can include various applications for implementing various application services. A program implementing the method of the embodiment of the present invention may be included in the application 7022.
  • Processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in a form of software.
  • the processor 701 described above may be a general purpose processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like.
  • DSP digital signal processor
  • the processor 701 can implement or perform the various methods, steps, and logic blocks disclosed in the embodiments of the present invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiment of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a storage medium, the storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 in combination with its hardware. Complete the steps of the foregoing method.
  • the parameter configuration device 700 may be configured by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), and Complex Programmable Logic Devices (CPLD, Complex Programmable Logic Device, Field-Programmable Gate Array (FPGA), General Purpose Processor, Controller, Micro Controller Unit (MCU), Microprocessor, or other Electronic component implementation for performing the aforementioned method.
  • ASICs Application Specific Integrated Circuits
  • DSPs Programmable Logic Devices
  • PLDs Programmable Logic Devices
  • CPLD Complex Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • MCU Micro Controller Unit
  • Microprocessor or other Electronic component implementation for performing the aforementioned method.
  • the embodiment of the invention further provides a computer readable storage medium, on which a computer program is stored, which when executed by the processor, executes:
  • the length of the cyclic prefix is determined.
  • the number of the cyclic prefix is four cyclic prefixes having a first length and three cyclic prefixes having a second length;
  • the number of the cyclic prefix is two cyclic prefixes having a third length and five cyclic prefixes having a fourth length;
  • the number of the cyclic prefix is determined to be one cyclic prefix having a fifth length and six cyclic prefixes having a sixth length.
  • the first length is 10 times of the orthogonal frequency division multiplexing symbol period T, and the second length is 8T;
  • the fifth length is 16T and the fourth length is 8T.
  • the content of the cyclic prefix signal is consistent with the content of the frequency division multiplexing symbol corresponding to the cyclic prefix that is equal to the length of the cyclic prefix.
  • first ⁇ second ⁇ third ⁇ fourth ⁇ fifth ⁇ sixth in the embodiments of the present invention are merely objects that are similar to each other, and do not represent a specific ordering for an object, which can be understood.
  • the first, second, third, fourth, fifth, sixth, and the like may be interchanged in a specific order or order.
  • objects of the "first ⁇ second ⁇ third ⁇ fourth ⁇ fith ⁇ sixth” distinction may be interchanged where appropriate so that the embodiments of the invention described herein can be The order described in addition to those is implemented.
  • An embodiment of the present invention provides a parameter configuration method, including: a parameter configuration apparatus, determining, by using an orthogonal frequency division multiplexing radio signal, a number of cyclic prefixes of a time slot and a length of the cyclic prefix; and according to the length of the cyclic prefix And the number determines the distribution of the cyclic prefix.
  • a parameter configuration apparatus determining, by using an orthogonal frequency division multiplexing radio signal, a number of cyclic prefixes of a time slot and a length of the cyclic prefix; and according to the length of the cyclic prefix And the number determines the distribution of the cyclic prefix.

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Abstract

本发明公开了一种参数配置方法，包括：确定正交频分复用无线信号构成时隙的循环前缀的个数；确定所述循环前缀的长度；本发明还公开了另两种参数配置装置及一种计算机存储介质。

Description

一种参数配置方法、装置及存储介质
相关申请的交叉引用
本申请基于申请号为201610814841.5、申请日为2016年09月09日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及通信技术领域，尤其涉及一种参数配置方法、装置及存储介质。
背景技术
正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)作为一种无线信号的调制方式，将信号子载波映射到快速傅里叶变换(Inverse Fast Fourier Transform，IFFT)输入中，IFFT变换的结果作为发射调制的信号源；C基于OFDM无线信号调制的循环前缀(Cyclic Prefix，CP)的引入，进一步增强了系统抗符号间干扰(ISI)的能力，同时还更好地保持了子载波之间的正交性。
IFFT变换的公式为：
Figure PCTCN2017100931-appb-000001
其中，i＝0,1...，N-1；
将基于上述方法生成的信号的尾部一定数量的样点，拷贝到信号的前面作为CP，从而形成一个完整的符号(Symbol)；CP可以对信号的多径分量进行保护，防止符号间的干扰。根据N点数值的不同和子载波间隔的不同，符号的长度也可变。设备通过发射连续的符号来传输数据，设备发射 的连续信号示意图，如图1所示，包括连续多个符号的空中信号，且符号长度不定。
OFDM信号生成示意图，如图2所示，不同发射带宽的设备在OFDM上行信号还可频分复用到一起，为同一无线接入设备接收和解码。
由于不同发射带宽的UE需要频分复用到同一帧，且他们的采样率、FFT点数等参数不同；因此，会引起不同带宽的CP在时间上不能对齐，进而导致有效CP长度减少、增加不同OFDM参数之间的干扰。
发明内容
有鉴于此，本发明实施例期望提供一种参数配置方法、装置及存储介质，能够使得不同带宽的CP在时间上近似对齐，减少不同OFDM参数之间的干扰，降低设备的采样率。
本发明实施例的技术方案是这样实现的：
本发明实施例提供一种参数配置方法，所述方法包括：确定正交频分复用无线信号构成时隙的循环前缀的个数；确定所述循环前缀的长度。
在一实施例中，所述确定正交频分复用无线信号构成时隙的循环前缀的个数，包括：
确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二
长度的循环前缀；或，
确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四
长度的循环前缀；或，
确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六
长度的循环前缀。
在一实施例中，所述确定所述循环前缀的长度，包括：确定所述第一长度为
正交频分复用符号周期T的10倍，所述第二长度为8T；确定所述第三长度为12T，所述第四长度为8T；确定所述第五长度为16T，所述第四长度为8T。
在一实施例中，所述方法还包括：依据所述循环前缀的长度确定所述循环前缀的分布为：
{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
{16T，8T，8T，8T，8T，8T，8T}。
在一实施例中，所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
本发明实施例还公开一种参数配置装置，所述装置包括：第一确定模块和第二确定模块；其中，
所述第一确定模块，配置为确定正交频分复用无线信号构成时隙的循环前缀的个数；
所述第二确定模块，配置为确定所述循环前缀的长度。
在一实施例中，所述第一确定模块，具体用于确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，
确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四
长度的循环前缀；或，确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
在一实施例中，所述第二确定模块，配置为确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
确定所述第三长度为12T，所述第四长度为8T；
确定所述第五长度为16T，所述第四长度为8T。
在一实施例中，所述装置还包括：第三确定模块，配置为依据所述循环前缀的长度确定所述循环前缀的分布为：
{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
{16T，8T，8T，8T，8T，8T，8T}。
在一实施例中，所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
本发明实施例还提供一种参数配置装置，包括：存储器，配置为存储可执行程序；
处理器，配置为通过执行所述存储器中存储的可执行程序时，执行：
确定正交频分复用无线信号构成时隙的循环前缀的个数；
确定所述循环前缀的长度。
本发明实施例还提供一种存储介质，存储有可执行程序，所述可执行程序被处理器运行时，执行：
确定正交频分复用无线信号构成时隙的循环前缀的个数；
确定所述循环前缀的长度。
本发明实施例所提供的参数配置方法、装置及存储介质，确定OFDM无线信号构成时隙的CP的个数和长度，并且提供了优选的时隙内CP的分布情况；如此，在同一系统带宽下，至少四种不同的OFDM参数可以临频 复用，并且相互之间的干扰最小；所述至少两种不同的OFDM参数利用极低的采样速率与LTE临频复用时，符号也可以近似对齐，减小了不同OFDM参数之间的干扰。
附图说明
图1为本发明实施例设备发射的连续信号示意图；
图2为本发明实施例OFDM信号生成示意图；
图3为本发明实施例OFDM的子载波映射示意图；
图4为本发明实施例参数配置方法的处理流程可选示意图；
图5为本发明实施例中不同采样率的OFDM参数共存的示意图；
图6为本发明实施例参数配置装置的组成结构可选示意图。
图7为本发明实施例参数配置装置的硬件组成结构示意图。
具体实施方式
为更好地理解本发明实施例，下面对OFDM进行详细介绍。
OFDM的每一帧信号中包含多个符号，所述符号的长度可以不同；由于OFDM信号属于数字信号，因此，OFDM信号的采样频率在帧内时不变的。故符号长度与该符号占用的采样点数具有对应关系，OFDM的子载波映射示意图，如图3所示，可以看出符号长度与IFFT的输入点值N保持一致。
随着通信技术的发展，为了满足不同业务类型的需求，在5G系统设计了多种不同的OFDM参数配置共存于同一载频；其中，不同的OFDM参数包括：不同的子载波间隔，CP/GP长度等。采用不同的OFDM参数的业务类型频分复用，如果子载波间隔或者符号长度不同，会导致不同子带之间存在子载波间串扰。为了尽量减少干扰，不同的OFDM参数之间需尽量保持整数倍的关系；如：不同的子载波间隔之间为整数倍关系，不同的时域 符号长度之间为整数倍关系。
本发明实施例一种参数配置方法的处理流程可选示意图，如图4所示，包括以下步骤：
步骤101，确定OFDM无线信号构成时隙的循环前缀的个数。
在一实施例中，一个时隙由包含7个CP的OFDM符号组成，在时域上的总长度为960T；参数配置装置确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀；
这里，为了降低采样率，所述第一长度、第二长度、第三长度、第四长度均为偶数；
其中，
Figure PCTCN2017100931-appb-000002
m为正整数或正整数的分数；
为正确发送和接收数据，设备的采样率R＝n/T，其中，n为正整数或正整数的分数。
步骤102，确定所述循环前缀的长度。
在一实施例中，参数配置装置以确保各个长度的差值小为策略确定所述第一长度为OFDM正交频分复用符号周期T的10倍，所述第二长度为8T；确定所述第三长度为12T，所述第四长度为8T；确定所述第五长度为16T，所述第四长度为8T。
由此，可确定所述CP的分布情况为{10T*4，8T*3}，或{12T*2，8T*5}，或{16T*1，8T*6}；
其中，所述循环前缀信号的内容与所述循环前缀对应的OFDM符号后面等于所述循环前缀的长度的内容一致；所述OFDM符号的长度为128T，举例所述CP的长度为A，则长度为A的CP的内容与所述128T长的OFDM 符号中从最后一位开始向前数长度为A的OFDM符号内容一致。
所述参数配置方法还包括：
步骤103，依据所述循环前缀的长度确定所述循环前缀的分布。
在一实施例中，参数配置装置确定所述循环前缀的分布为{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，{16T，8T，8T，8T，8T，8T，8T}。
本发明实施例周期的优选的时隙内CP的分布，使得在同一系统带宽下，不同的OFDM参数可以邻频复用，并且使得复用的OFDM参数之间干扰最小。
实施例一
本发明实施例一中，一个时隙由7个OFDM符号组成，包含CP的OFDM符号的长度分别为{10T+128T，8T+128T，10T+128T，8T+128T，10T+128T，8T+128T，10T+128T}；其中，每个OFDM符号的后面128T部分来自于IFFT变换；本发明实施例中，m＝1，
Figure PCTCN2017100931-appb-000003
本发明实施例中，一种优选的采样率为每个T长时间对应一个采样点，n＝1时，采样率R＝1.92m/s，此时，IFFT的点数为128点。
本发明实施例中，另一种优选的采样率为每2个T长时间对应一个采样点，n＝1/2时，采样率R＝0.96m/s，此时，IFFT的点数为64点。
本发明实施例中，每一个CP后面都有一个128T长的OFDM符号，且CP信号在时域上是对该OFDM符号后面等于该CP长度的时域重复。
本发明实施例中提供了OFDM参数中每一个OFDM符号的CP的长度，并且提供了优选的时隙内CP的分布情况；通过本发明实施例，在同一系统带宽下，至少两种不同的OFDM参数可以临频复用，并且相互之间的干扰最小；所述至少两种不同的OFDM参数利用极低的采样速率与LTE临频复 用时，符号也可以近似对齐，减小不同OFDM参数之间的干扰；如此，通过采用合适的m和n因子缩放，降低设备的采样率，极大地降低了设备的发射和接收功耗；CP的设定在每一帧中也保持相对均匀，当不同的OFDM参数采样率之间为倍数关系时，OFDM参数在每个CP点数之间也可以为倍数关系，如此简化了基带处理过程和空中接口的设定。
实施例二
本发明实施例二中，一个时隙由7个OFDM符号组成，包含CP的OFDM符号的长度分别为{12T+128T，8T+128T，8T+128T，8T+128T，12T+128T，8T+128T，8T+128T}；其中，每个OFDM符号的后面128T部分来自于IFFT变换；本发明实施例中，m＝1，
Figure PCTCN2017100931-appb-000004
本发明实施例中，一种优选的采样率为每个T长时间对应一个采样点，n＝1时，采样率R＝1.92m/s，此时，IFFT的点数为128点。
本发明实施例中，另一种优选的采样率为每2个T长时间对应一个采样点，n＝1/2时，采样率R＝0.96m/s，此时，IFFT的点数为64点。
本发明实施例中，另一种优选的采样率为每4个T长时间对应一个采样点，n＝1/4时，采样率R＝0.48m/s，此时，IFFT的点数为32点。
本发明实施例中，每一个CP后面都有一个128T长的OFDM符号，且CP信号在时域上是对该OFDM符号后面等于该CP长度的时域重复。
本发明实施例中提供了OFDM参数中每一个OFDM符号的CP的长度，并且提供了优选的时隙内CP的分布情况；通过本发明实施例，在同一系统带宽下，至少三种不同的OFDM参数可以临频复用，并且相互之间的干扰最小；所述至少两种不同的OFDM参数利用极低的采样速率与LTE临频复用时，符号也可以近似对齐，减小不同OFDM参数之间的干扰；如此，通过采用合适的m和n因子缩放，降低设备的采样率，极大地降低了设备的发射和接收功耗；CP的设定在每一帧中也保持相对均匀，当不同的OFDM 参数采样率之间为倍数关系时，OFDM参数在每个CP点数之间也可以为倍数关系，如此简化了基带处理过程和空中接口的设定。
实施例三
本发明实施例三中，一个时隙由7个OFDM符号组成，包含CP的OFDM符号的长度分别为{16T+128T，8T+128T，8T+128T，8T+128T，8T+128T，8T+128T，8T+128T}；其中，每个OFDM符号的后面128T部分来自于IFFT变换；本发明实施例中，m＝1，
Figure PCTCN2017100931-appb-000005
本发明实施例中，一种优选的采样率为每个T长时间对应一个采样点，n＝1时，采样率R＝1.92m/s，此时，IFFT的点数为128点。
本发明实施例中，另一种优选的采样率为每2个T长时间对应一个采样点，n＝1/2时，采样率R＝0.96m/s，此时，IFFT的点数为64点。
本发明实施例中，另一种优选的采样率为每4个T长时间对应一个采样点，n＝1/4时，采样率R＝0.48m/s，此时，IFFT的点数为32点。
本发明实施例中，另一种优选的采样率为每8个T长时间对应一个采样点，n＝1/8时，采样率R＝0.48m/s，此时，IFFT的点数为16点。
本发明实施例中，每一个CP后面都有一个128T长的OFDM符号，且CP信号在时域上是对该OFDM符号后面等于该CP长度的时域重复。
本发明实施例中提供了OFDM参数中每一个OFDM符号的CP的长度，并且提供了优选的时隙内CP的分布情况；通过本发明实施例，在同一系统带宽下，至少四种不同的OFDM参数可以临频复用，并且相互之间的干扰最小；所述至少两种不同的OFDM参数利用极低的采样速率与LTE临频复用时，符号也可以近似对齐，减小不同OFDM参数之间的干扰；如此，通过采用合适的m和n因子缩放，降低设备的采样率，极大地降低了设备的发射和接收功耗；CP的设定在每一帧中也保持相对均匀，当不同的OFDM参数采样率之间为倍数关系时，OFDM参数在每个CP点数之间也可以为倍 数关系，如此简化了基带处理过程和空中接口的设定。
实施例四
本发明实施例四中，一个时隙由7个OFDM符号组成，包含CP的OFDM符号的长度分别为{12T+128T，8T+128T，8T+128T，8T+128T，12T+128T，8T+128T，8T+128T}；其中，每个OFDM符号的后面128T部分来自于IFFT变换；本发明实施例中，m＝1，
Figure PCTCN2017100931-appb-000006
本发明实施例中，一种优选的采样率为每个T长时间对应一个采样点，n＝1时，采样率R＝1.92m/s，此时，IFFT的点数为128点。
本发明实施例中，另一种优选的采样率为每2个T长时间对应一个采样点，n＝1/2时，采样率R＝0.96m/s，此时，IFFT的点数为64点。
本发明实施例中，每一个CP后面都有一个128T长的OFDM符号，且CP信号在时域上是对该OFDM符号后面等于该CP长度的时域重复。
本发明上述实施例中不同采样率的OFDM参数共存示意图，如图5所示，两个不同的OFDM参数的采样率不同，子载波间隔和符号长度相同，如此可以实现无保护带共存。
本发明实施例中提供了OFDM参数中每一个OFDM符号的CP的长度，并且提供了优选的时隙内CP的分布情况；通过本发明实施例，在同一系统带宽下，至少两种不同的OFDM参数可以临频复用，并且相互之间的干扰最小；所述至少两种不同的OFDM参数利用极低的采样速率与LTE临频复用时，符号也可以近似对齐，减小不同OFDM参数之间的干扰；如此，通过采用合适的m和n因子缩放，降低设备的采样率，极大地降低了设备的发射和接收功耗；CP的设定在每一帧中也保持相对均匀，当不同的OFDM参数采样率之间为倍数关系时，OFDM参数在每个CP点数之间也可以为倍数关系，如此简化了基带处理过程和空中接口的设定。
为实现上述参数配置方法，本发明实施例还提供一种参数配置装置， 所述装置的组成结构可选示意图，如图6所示，包括：第一确定模块10和第二确定模块20；其中，
所述第一确定模块10，配置为确定正交频分复用无线信号构成时隙的循环前缀的个数；
所述第二确定模块20，配置为确定所述循环前缀的长度。
在一实施例中，所述第一确定模块10，配置为确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
在一实施例中，所述第二确定模块，配置为确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
确定所述第三长度为12T，所述第四长度为8T；
确定所述第五长度为16T，所述第四长度为8T。
在一实施例中，所述装置还包括：第三确定模块30，配置为依据所述循环前缀的长度确定所述循环前缀的分布为：
{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，{16T，8T，8T，8T，8T，8T，8T}。
在一实施例中，所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
在一实施例中，一个时隙由包含7个CP的OFDM符号组成，在时域上的总长度为960T；其中，
Figure PCTCN2017100931-appb-000007
m为正整数或正整数的分数；为正确发送和接收数据，设备的采样率R＝n/T，其中，n为正整数或正整数的分数。
本发明实施例提供的参数配置方法及装置所确定的CP长度和样点数用于设备的OFDM信号的发射和接收。
本发明实施例还提供一种参数配置装置，所述参数配置装置的硬件组成结构，包括：存储器，配置为存储可执行程序；
处理器，配置为运行所述存储器中存储的可执行程序时，执行：
确定正交频分复用无线信号构成时隙的循环前缀的个数；
确定所述循环前缀的长度。
所述处理器用于运行所述计算机程序时，执行：
确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，
确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，
确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
所述处理器用于运行所述计算机程序时，执行：
确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
确定所述第三长度为12T，所述第四长度为8T；
确定所述第五长度为16T，所述第四长度为8T。
所述处理器还用于运行所述计算机程序时，执行：
依据所述循环前缀的长度确定所述循环前缀的分布为：
{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
{16T，8T，8T，8T，8T，8T，8T}。
所述处理器用于运行所述计算机程序时，执行：
所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
图7是本发明另一实施例的参数配置装置的硬件结构示意图，参数配置装置700包括：至少一个处理器701、存储器702、至少一个通信接口704。参数配置装置700中的各个组件通过总线系统705耦合在一起。可理解，总线系统705用于实现这些组件之间的连接通信。总线系统705除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图7中将各种总线都标为总线系统705。
可以理解，存储器702可以是易失性存储器或非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access  Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本发明实施例描述的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
本发明实施例中的存储器702用于存储各种类型的数据以支持参数配置装置700的操作。这些数据的示例包括：用于在参数配置装置700上操作的任何计算机程序，如操作系统7021和应用程序7022；联系人数据；电话簿数据；消息；图片；视频等。其中，操作系统7021包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序7022可以包含各种应用程序，用于实现各种应用业务。实现本发明实施例方法的程序可以包含在应用程序7022中。
上述本发明实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器701可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器702，处理器701读取存储器702中的信息，结合其硬件 完成前述方法的步骤。
在示例性实施例中，参数配置装置700可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，用于执行前述方法。
本发明实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器运行时，执行：
确定正交频分复用无线信号构成时隙的循环前缀的个数；
确定所述循环前缀的长度。
所述计算机程序被处理器运行时，执行：
确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，
确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，
确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
所述计算机程序被处理器运行时，执行：
确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
确定所述第三长度为12T，所述第四长度为8T；
确定所述第五长度为16T，所述第四长度为8T。
所述计算机程序被处理器运行时，还执行：
依据所述循环前缀的长度确定所述循环前缀的分布为：
{10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
{12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
{16T，8T，8T，8T，8T，8T，8T}。
所述计算机程序被处理器运行时，还执行：
所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
需要说明的是，本发明实施例所涉及的术语“第一\第二\第三\第四\第五\第六”仅仅是是区别类似的对象，不代表针对对象的特定排序，可以理解地，“第一\第二\第三\第四\第五\第六”在允许的情况下可以互换特定的顺序或先后次序。应该理解“第一\第二\第三\第四\第五\第六”区分的对象在适当情况下可以互换，以使这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例提供一种参数配置方法，包括：参数配置装置确定正交频分复用无线信号构成时隙的循环前缀的个数及所述循环前缀的长度；并依据所述循环前缀的长度和个数确定所述循环前缀的分布。如此，能够使得不同带宽的CP在时间上近似对齐，减少不同OFDM参数之间的干扰，降低设备的采样率。

Claims (12)

  1. 一种参数配置方法，所述方法包括：
    确定正交频分复用无线信号构成时隙的循环前缀的个数；
    确定所述循环前缀的长度。
  2. 根据权利要求1所述参数配置方法，其中，所述确定正交频分复用无线信号构成时隙的循环前缀的个数，包括：
    确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，
    确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，
    确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
  3. 根据权利要求1或2所述参数配置方法，其中，所述确定所述循环前缀的长度，包括：
    确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
    确定所述第三长度为12T，所述第四长度为8T；
    确定所述第五长度为16T，所述第四长度为8T。
  4. 根据权利要求3所述参数配置方法，其特征在于，所述方法还包括：依据所述循环前缀的长度确定所述循环前缀的分布为：
    {10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
    {12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
    {16T，8T，8T，8T，8T，8T，8T}。
  5. 根据权利要求1或2所述参数配置方法，其中，所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
  6. 一种参数配置装置，所述装置包括：第一确定模块和第二确定模块；其中，
    所述第一确定模块，配置为确定正交频分复用无线信号构成时隙的循环前缀的个数；
    所述第二确定模块，配置为确定所述循环前缀的长度。
  7. 根据权利要求6所述参数配置装置，其中，所述第一确定模块，配置为确定所述循环前缀的个数为四个具有第一长度的循环前缀和三个具有第二长度的循环前缀；或，
    确定所述循环前缀的个数为两个具有第三长度的循环前缀和五个具有第四长度的循环前缀；或，
    确定所述循环前缀的个数为一个具有第五长度的循环前缀和六个具有第六长度的循环前缀。
  8. 根据权利要求6或7所述参数配置装置，其中，所述第二确定模块，配置为确定所述第一长度为正交频分复用符号周期T的10倍，所述第二长度为8T；
    确定所述第三长度为12T，所述第四长度为8T；
    确定所述第五长度为16T，所述第四长度为8T。
  9. 根据权利要求8所述参数配置装置，其中，所述装置还包括：第三确定模块，配置为依据所述循环前缀的长度确定所述循环前缀的分布为：
    {10T，8T，10T，8T，10T，8T，10T}，或{10T，10T，8T，10T，8T，10T，8T}；或，
    {12T，8T，8T，12T，8T，8T，8T}，或{12T，8T，8T，8T，12T，8T，8T}；或，
    {16T，8T，8T，8T，8T，8T，8T}。
  10. 根据权利要求6或7所述参数配置装置，其中，所述循环前缀信号的内容与所述循环前缀对应的频分复用符号后面等于所述循环前缀的长度的内容一致。
  11. 一种参数配置装置，包括：
    存储器，配置为存储可执行程序；
    处理器，配置为通过执行所述存储器中存储的可执行程序时，实现权利要求1至5任一项所述的参数配置方法。
  12. 一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现权利要求1至5任一项所述的参数配置方法。
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