WO2020024381A1 - 定位参考信号生成方法、装置、通信系统及存储介质 - Google Patents

定位参考信号生成方法、装置、通信系统及存储介质 Download PDF

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Publication number
WO2020024381A1
WO2020024381A1 PCT/CN2018/105683 CN2018105683W WO2020024381A1 WO 2020024381 A1 WO2020024381 A1 WO 2020024381A1 CN 2018105683 W CN2018105683 W CN 2018105683W WO 2020024381 A1 WO2020024381 A1 WO 2020024381A1
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Prior art keywords
positioning
time
prs
domain sequence
frequency domain
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PCT/CN2018/105683
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English (en)
French (fr)
Inventor
陈诗军
毕程
陈大伟
王园园
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中兴通讯股份有限公司
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Priority to ES18928375T priority Critical patent/ES2946282T3/es
Priority to EP18928375.7A priority patent/EP3833058B1/en
Priority to US17/264,424 priority patent/US11974259B2/en
Publication of WO2020024381A1 publication Critical patent/WO2020024381A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/04—Details
    • G01S1/042—Transmitters
    • G01S1/0428—Signal details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca 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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals

Definitions

  • the present invention relates to, but is not limited to, the field of communication technologies, and in particular, to a method, a device, a communication system, and a storage medium for generating a Positioning Reference Signal (PRS).
  • PRS Positioning Reference Signal
  • LTE Long Term Evolution
  • OFDM Orthogonal Frequency Division Multiplexing
  • 5G The fifth generation mobile communication technology standard
  • An advantage of this type of technology is that you can reduce the inter-symbol interference (ISI) and inter-carrier interference (ICI) by setting a cyclic prefix (CP). Cyclic prefix is a copy of each OFDM symbol. Part of the symbol is appended to the front of each OFDM symbol.
  • a CP is added at the transmitting end, and a CP is removed at the receiving end.
  • the structure of the CP is shown in FIG. 1, and the processes of the receiving end and the transmitting end are shown in FIG. 2.
  • the basic principle of the related technology's Observed Time Difference of Arrival (OTDOA) method is that according to different distances of different cells, the time ⁇ i of PRS reaching the receiving node in different cells is different.
  • the PRS arrival time of neighboring cells and the reference cell The difference in PRS arrival time is obtained to obtain the PRS arrival time difference, and the distance difference between different cells is calculated according to the time difference, thereby achieving the positioning of the terminal in the cell.
  • the difference between the PRS signal arrival times of the two cells exceeds the length of one CP, it will cause the PRS signals on different symbols to interfere with each other, which will affect the correlation detection at the receiving end and affect the positioning results.
  • the arrival time difference is more than one CP, and the positioning reference signal will cause interference to the communication data. This limits the distance between the nearest and farthest cells to the receiving end in all K cells used for measurement should not exceed the CP time length ⁇ speed of light.
  • the frame structure of 5G has changed a lot compared with LTE. It supports flexible configuration of the subcarrier interval. As shown in Figure 3, the subcarrier interval can be 30kHz, 60kHz, 120kHz, 240kHz, which corresponds to a large subcarrier interval. , The system symbol length will also become shorter, and the CP will also become shorter, which will result in the inability to effectively complete OTDOA positioning in 5G scenarios.
  • the embodiments of the present invention desire to provide a method, device, communication system and storage medium for generating a positioning reference signal, so as to solve the problem that the length of the CP is shortened due to the increase in the subcarrier interval in the related technology, which leads to 5G The OTDOA positioning problem cannot be effectively completed in the scenario.
  • an embodiment of the present invention provides a method for generating a positioning reference signal.
  • the method includes: generating a positioning frequency domain sequence according to time-frequency resource information and system configuration information; wherein the time-frequency resource information includes an allocation time. Number of consecutive system symbols
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ; and based on the positioning frequency domain sequence, generating the Continuous positioning time domain data in a continuous system symbol time.
  • an embodiment of the present invention provides a positioning reference signal generating device.
  • the device includes: a first generating unit configured to generate a positioning frequency domain sequence according to the time-frequency resource information and the system configuration information;
  • the time-frequency resource information includes the number of consecutive system symbols in the allocation time.
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ;
  • a second generating unit configured to generate the positioning frequency domain sequence based on the positioning frequency domain sequence; Continuous positioning time domain data in a continuous system symbol time.
  • an embodiment of the present invention provides a communication system including the apparatus for generating a positioning reference signal according to the embodiment of the present invention.
  • an embodiment of the present invention provides a positioning reference signal generating device.
  • the positioning reference signal generating device includes a memory, a processor, and a positioning reference stored in the memory and operable on the processor.
  • a signal generating program and when the positioning reference signal generating program is executed by the processor, the method for generating the positioning reference signal provided by the embodiment of the present invention is implemented.
  • an embodiment of the present invention provides a storage medium that stores a computer program, and the computer program is executed by at least one processor to implement generation of the positioning reference signal provided by the embodiment of the present invention. method.
  • a positioning frequency domain sequence is generated according to a preset positioning subcarrier interval, and generated according to the positioning frequency domain sequence.
  • Continuous positioning time domain data in a continuous system symbol time that is, in the embodiment of the present invention, multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length and making the system configured with a high subcarrier interval
  • the positioning reference signal is configured with a small subcarrier interval and a long CP length, thereby increasing the coverage of the positioning network, making the OTDOA positioning technology more feasible, and effectively avoiding the positioning reference signal to other Signal interference, and further effectively solve the related art problem that due to the increase of the subcarrier spacing in 5G, making the CP length shorter, which can not effectively complete the OTDOA positioning problem in the 5G scene.
  • FIG. 1 is a schematic structural diagram of a CP in the related art
  • 3 is a schematic diagram of different subcarrier intervals in 5G provided by an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for generating a positioning reference signal according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of combining multiple system symbols into one positioning reference signal according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of another method for generating a positioning reference signal according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a positioning reference signal generating device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a positioning reference signal generating apparatus according to an embodiment of the present invention.
  • the positioning reference signal when the system is configured with a high subcarrier interval and a small CP, the positioning reference signal is configured with a small subcarrier interval and a long CP length, thereby increasing the coverage of the positioning network.
  • the method described in the present invention is described below. Explain in detail:
  • An embodiment of the present invention provides a method for generating a positioning reference signal. Referring to FIG. 4, the method includes:
  • the time-frequency resource information includes the number of consecutive system symbols in the allocation time.
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ;
  • the length of the positioning frequency domain sequence according to the embodiment of the present invention is the number of system subcarriers of the allocated frequency domain resource * 2 ⁇ .
  • a positioning frequency domain sequence is generated according to 1/2 ⁇ system subcarrier intervals according to preset time-frequency resource information and a positioning base station identifier id, so as to configure a positioning reference signal as a small subcarrier interval.
  • the allocation method is characterized by ensuring that it contains at least two consecutive system symbols for sending PRS;
  • system symbols described in the embodiments of the present invention include symbols such as OFDM symbols.
  • FIG. 3 is a schematic diagram of different subcarrier intervals in 5G. According to FIG. 3, as the system subcarrier interval increases, the CP length becomes smaller and smaller.
  • the schematic diagram of the reference signal is shown in FIG. 5. In the embodiment of the present invention, two consecutive two system symbols are configured as one positioning symbol of the present invention.
  • the number of consecutive system symbols is Each.
  • a positioning frequency domain sequence is generated according to a preset positioning subcarrier interval, and the positioning frequency domain sequence is generated according to the positioning frequency domain sequence.
  • Continuous positioning time-domain data in a continuous system symbol time that is, in the embodiment of the present invention, multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length, so that the system is configured with a high subcarrier interval and a small
  • the positioning reference signal is configured with a small subcarrier interval and a long CP length, thereby increasing the coverage of the positioning network. Interference, and further effectively solve the related art problem that due to the increase in the subcarrier spacing of 5G, which makes the CP length shorter, and can not effectively complete the OTDOA positioning problem in 5G scenarios.
  • it further includes pre-allocated time-frequency resource information and system configuration information;
  • the time-frequency resource information further includes the number of frequency-domain system subcarriers. And system subcarrier numbers, as well as Frequency-domain continuous frequency-domain resources allocated within the system symbol of each system subcarrier interval; the system configuration information further includes a positioning base station id and a system subcarrier interval.
  • the embodiments of the present invention allocate time-frequency resource information and system configuration information by positioning a base station or by a communication system.
  • a positioning frequency domain sequence is generated according to a preset ⁇ f prs , thereby realizing positioning reference signals. Configured for small subcarrier spacing.
  • Table 1 shows the configuration of different subcarrier intervals in the 5G embodiment of the present invention, as shown in Table 1.
  • ⁇ ⁇ f 2 ⁇ ⁇ 15 [kHz] CP 0 15 Regular CP 1 30 Regular CP 2 60 Normal CP, extended CP 3 120 Regular CP
  • Table 2 shows the CP configuration under different subcarrier bandwidths according to the embodiment of the present invention. As shown in Table 2, when the positioning subcarrier interval is 15, the corresponding system symbol length is 66.67, and the CP length is 4.69. The total signal length is 71.36.
  • step S401 includes:
  • ⁇ is a natural number; according to the system subcarrier number and the positioning base station id, the length is generated according to a preset positioning subcarrier interval as Positioning frequency domain sequence Where ⁇ and k are natural numbers.
  • the embodiment of the present invention generates a positioning frequency domain sequence by using a method specified in the 3GPP standard.
  • those skilled in the art can also generate a positioning frequency domain sequence by other methods, which is not limited in the present invention.
  • step S402 may include: performing a Fourier transform on the positioning frequency domain sequence to obtain a continuous Time-domain data in a system symbol period.
  • the embodiment of the present invention generates Time-domain data within the time period of a continuous system symbol, that is, to realize the generation of a plurality of system symbols into a positioning symbol, see FIG. 5.
  • multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length, so that when the system is configured with high subcarrier spacing and small CP, the positioning reference signal is configured with small subcarrier spacing, long
  • the CP length which in turn increases the coverage of the positioning network, makes OTDOA positioning technology more feasible, and effectively avoids the interference of positioning reference signals to other signals, and effectively solves the related technology due to the subcarrier spacing in 5G.
  • Increasing makes the CP length shorter, resulting in the inability to effectively complete the OTDOA positioning problem in 5G scenarios.
  • An embodiment of the present invention also provides a method for generating a positioning reference signal.
  • the method for generating a PRS in 5G according to an embodiment of the present invention includes the following steps:
  • the first step is to assign positioning reference signals with time-frequency resource information that is continuous in time and determine system configuration information such as the system subcarrier interval, the positioning subcarrier interval, and the PRSid (that is, the positioning base station identification) configuration:
  • the time-frequency resource information includes: The number of consecutive system symbols in the allocated time is: Number of frequency domain system subcarriers And system subcarrier number.
  • the allocation method is characterized by ensuring that it contains at least two consecutive OFDM symbols for sending PRS;
  • the system configuration information includes: PRSid, system subcarrier interval, positioning subcarrier interval, etc.
  • the second step is to generate a positioning frequency domain sequence to be sent according to the positioning subcarrier interval configuration information, time-frequency resource information, and PRSid information. It includes the following steps:
  • the length according to the positioning subcarrier interval is Positioning frequency domain sequence.
  • the method for generating a positioning frequency domain sequence in the embodiment of the present invention includes, but is not limited to, a method that meets the requirements specified in the 3GPP standard.
  • Positioning frequency domain sequence includes, but is not limited to, a method that meets the requirements specified in the 3GPP standard.
  • the third step is to generate Time-domain data for continuous positioning in a continuous system symbol time.
  • the value of the range CP is multiplied by T s as the t parameter in Y (t) to obtain the time-domain sequence CP.
  • T s is the baseband sampling period as:
  • CP as continuous Time-domain data within a system symbol period.
  • CPsize prs equal to ⁇ f prs table corresponding to the CP length 1 divided by T S.
  • the method described in the embodiment of the present invention solves the problem that the CP is too short to limit the coverage of a positioning base station, so that when the system is configured with a high subcarrier interval and a small CP, the positioning reference signal can be configured with a small subcarrier interval and a long CP.
  • the length which in turn increases the coverage of the positioning network, makes OTDOA positioning technology more feasible, and at the same time effectively avoids interference of positioning reference signals to other signals.
  • the positioning reference signal generation includes:
  • Allocate time-frequency resource information and configuration information such as system subcarrier interval, positioning subcarrier interval, and PRSid to positioning reference signals;
  • positioning frequency domain sequence length ⁇ 4.
  • Generate positioning frequency domain sequence Generate positioning frequency domain sequence
  • the positioning reference signal generation includes:
  • Generate positioning frequency domain sequence Generated positioning frequency domain sequence
  • CP is continuous Time domain data for several system symbols.
  • cpsize prs equal to ⁇ f prs table corresponding to the CP length 1 divided by T S.
  • FIG. 6 is a schematic flowchart of another method for generating a positioning reference signal according to an embodiment of the present invention. The method for generating a positioning reference signal according to the embodiment of the present invention will be explained in detail below with reference to FIG. 6:
  • S602. Generate a positioning frequency domain sequence according to the time-frequency resource and the positioning subcarrier interval.
  • a positioning symbol is used for the continuous system symbols, and positioning time domain data of multiple system symbols that are continuous in time are generated according to the positioning frequency domain sequence.
  • multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length, so that when the system is configured with high subcarrier spacing and small CP, the positioning reference signal is configured with small subcarrier spacing, long CP length, thereby increasing the coverage of the positioning network.
  • An embodiment of the present invention provides a device for generating a positioning reference signal.
  • the device includes:
  • a first generating unit 71 is configured to generate a positioning frequency domain sequence according to the time-frequency resource information and the system configuration information; wherein the time-frequency resource information includes a number of consecutive system symbols in an allocated time
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ;
  • a second generating unit 72 is configured to generate the positioning frequency domain sequence based on the positioning frequency domain sequence. Continuous positioning time domain data in a continuous system symbol time.
  • the positioning frequency domain sequence is generated by the first generation unit 71 according to a preset positioning subcarrier interval, and is generated by the second generation unit 72 according to the positioning frequency domain sequence.
  • Continuous positioning time-domain data in a continuous system symbol time that is, in the embodiment of the present invention, multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length, so that the system is configured with a high subcarrier interval and a small
  • the positioning reference signal is configured with a small subcarrier interval and a long CP length, thereby increasing the coverage of the positioning network, making OTDOA positioning technology more feasible, and effectively avoiding the effect of positioning reference signals on other signals. Interference, and further effectively solve the related art problem that due to the increase in the subcarrier spacing of 5G, which makes the CP length shorter, and can not effectively complete the OTDOA positioning problem in the 5G scene.
  • the time-frequency resource information includes a pre-allocated number of 2 ⁇ system symbols. Number of frequency domain system subcarriers And system subcarrier number; the system configuration information includes the id of the base station, the system subcarrier interval, and the positioning subcarrier interval.
  • the embodiment of the present invention allocates time-frequency resource information and system configuration information through a base station performing positioning or a communication system.
  • the reference signal is configured as a small subcarrier interval.
  • Table 1 shows the configuration of different subcarrier intervals in the 5G embodiment of the present invention, as shown in Table 1.
  • Table 2 shows the CP configuration under different subcarrier bandwidths according to the embodiment of the present invention. As shown in Table 2, when the positioning subcarrier interval is 15, the corresponding system symbol length is 66.67, and the CP length is 4.69. The total signal length is 71.36.
  • the first generating unit 71 is further configured to determine a positioning frequency domain sequence length. According to the system subcarrier number and the positioning base station id, the length according to the preset positioning subcarrier interval is Positioning frequency domain sequence
  • the first generating unit 71 of the embodiment of the present invention generates a positioning frequency domain sequence according to a method specified in the 3GPP standard.
  • a positioning frequency domain sequence can also generate by other methods. This is not limited.
  • the second generating unit 72 is further configured to perform a Fourier transform on the positioning frequency domain sequence to obtain a continuous Time-domain data in a system symbol period.
  • the embodiment of the present invention generates Time-domain data within the time period of a continuous system symbol, that is, to realize the generation of a plurality of system symbols into a positioning symbol, see FIG. 5.
  • multiple system symbols are converted into one positioning symbol, thereby effectively increasing the CP length, so that when the system is configured with high subcarrier spacing and small CP, the positioning reference signal is configured with small subcarrier spacing, long
  • the CP length which in turn increases the coverage of the positioning network, makes OTDOA positioning technology more feasible, and effectively avoids the interference of positioning reference signals to other signals, and effectively solves the related technology due to the subcarrier spacing in 5G.
  • Increasing makes the CP length shorter, resulting in the inability to effectively complete the OTDOA positioning problem in 5G scenarios.
  • the fourth embodiment of the present invention provides a communication system, and the communication system includes the positioning reference signal generating device according to the embodiment of the present invention, which can be understood by referring to the embodiments of the present invention, and will not be discussed in detail herein.
  • An embodiment of the present invention provides a storage medium.
  • a computer program is stored on the storage medium, and when the computer program is executed by a processor, the following method steps are implemented:
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ;
  • the storage medium described in this embodiment includes, but is not limited to, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • An embodiment of the present invention provides a device for generating a positioning reference signal.
  • the device for generating a positioning reference signal includes: a memory 81, a processor 82, and stored in the memory 81 and can be processed in the processing.
  • the system configuration information includes a positioning subcarrier interval ⁇ f prs ;
  • modules or steps of the present invention can be implemented by a general-purpose computing device, and they can be concentrated on a single computing device or distributed on a network composed of multiple computing devices.
  • they may be implemented with program code executable by a computing device, so that they may be stored in a storage device and executed by the computing device, and in some cases, may be in a different order than here
  • the steps shown or described are performed either by making them into individual integrated circuit modules or by making multiple modules or steps into a single integrated circuit module. As such, the invention is not limited to any particular combination of hardware and software.

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Abstract

本发明公开了一种定位信号生成方法、装置、通信系统及存储介质，其中，方法包括：根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数Nslot prs，所述系统配置信息包括定位子载波间隔Δf prs；基于所述定位频域序列，生成所述Nslot prs个连续系统符号时间内的连续的定位时域数据。

Description

定位参考信号生成方法、装置、通信系统及存储介质
相关申请的交叉引用
本申请基于申请号为201810852229.6、申请日为2018年07月30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
本发明涉及但不限于通信技术领域，特别是涉及一种定位参考信号(Positioning Reference Signal，PRS)的生成方法、装置、通信系统及存储介质。
背景技术
长期演进(Long Term Evolution，LTE)技术引入了正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)和它的扩展或者混合技术，第五代移动通信技术标准(5G)依然使用这一技术。这类技术的一个优点是可以通过设置循环前缀(Cyclic Prefix，CP)来减少符号间干扰(Inter Symbol Interference，ISI)和载波间干扰(Intercarrier interference，ICI)，循环前缀是复制每个OFDM符号最后的部分符号，再附加到每个OFDM符号的前端。OFDM系统中在发射端进行加CP操作，接收端进行去CP操作。其中，CP的结构如图1所示，接收端和发射端的流程如图2所示。
相关技术的到达时间差定位方法(Observed Time Difference ofArrival，OTDOA)的基本原理是根据不同小区的距离不同，不同小区的PRS到达接收节点的时间τ i是不同的，相邻小区PRS到达时间和参考小区PRS到达时间做差，得到PRS到达时间差，通过根据该时间差来计算不同小区之间的 距离差，进而实现对小区内终端的定位。
但是当两个小区的PRS信号到达时间之差超过一个CP的时间长度时，就会造成不同符号上的PRS信号互相干扰，从而影响接收端侧的相关检测，并对定位结果造成影响，而且如果到达时间差超过一个CP，定位参考信号也会对通信数据造成干扰。这就限制了在所有用来测量的K个小区里，最近和最远小区到达接收端的距离差不宜超过CP时间长度×光速。
但是5G的帧结构与LTE相比发生了很大的变化，支持子载波间隔的灵活配置，如图3所示，子载波间隔可以是30kHz、60kHz、120kHz、240kHz，对应于大的子载波间隔，系统符号长度也会变短，CP也随之变短，所以就会导致在5G场景中无法有效的完成OTDOA定位。
发明内容
有鉴于此，本发明实施例期望提供一种定位参考信号的生成方法、装置、通信系统及存储介质，以解决相关技术中由于子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
第一方面，本发明实施例提供了一种定位参考信号的生成方法，该方法包括：根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000001
所述系统配置信息包括定位子载波间隔Δf prs；基于所述定位频域序列，生成所述
Figure PCTCN2018105683-appb-000002
个连续系统符号时间内的连续的定位时域数据。
第二方面，本发明实施例提供了一种定位参考信号的生成装置，该装置包括：第一生成单元，配置为根据所述时频资源信息和所述系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000003
所述系统配置信息包括定位子载波间隔Δf prs；第二生成单元，配置为基于所述定位频域序列，生成所述
Figure PCTCN2018105683-appb-000004
个连续系统符号时间内 的连续的定位时域数据。
第三方面，本发明实施例提供了一种通信系统，该通信系统包括本发明实施例所述的定位参考信号的生成装置。
第四方面，本发明实施例提供一种定位参考信号的生成装置，所述定位参考信号的生成装置包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的定位参考信号的生成程序，所述定位参考信号的生成程序被所述处理器执行时实现本发明实施例提供的所述定位参考信号的生成方法。
第五方面，本发明实施例提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被至少一个处理器执行时，以实现本发明实施例提供的所述定位参考信号的生成方法。
本发明实施例有益效果如下：
本发明实施例通过根据预设的定位子载波间隔生成定位频域序列，并根据该定位频域序列生成
Figure PCTCN2018105683-appb-000005
个连续系统符号时间内的连续的定位时域数据，也就是说，本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰，并进而有效解决了相关技术中由于5G中子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图说明
图1是相关技术中CP的结构示意图；
图2是相关技术中OFDM发射系统的流程示意图；
图3是本发明实施例提供的5G中不同的子载波间隔示意图；
图4是本发明实施例提供的一种定位参考信号的生成方法的流程示意图；
图5是本发明实施例提供的将多个系统符号合成一个定位参考信号的示意图；
图6是本发明实施例提供的另一种定位参考信号的生成方法的流程示意图；
图7是本发明实施例提供的一种定位参考信号的生成装置的结构示意图；
图8是本发明实施例提供的一种定位参考信号的生成装置的结构示意图。
具体实施方式
以下面将参照附图更详细地描述本发明的示例性实施例。虽然附图中显示了本发明的示例性实施例，然而应当理解，可以以各种形式实现本发明而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。
本发明实施例在系统配置为高子载波间隔，小CP的情况下，通过将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，下面对本发明所述的方法进行详细的解释和说明：
本发明实施例提供了一种定位参考信号的生成方法，参见图4，该方法包括：
S401、根据时频资源信息和系统配置信息，生成定位频域序列。
其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000006
所述系统配置信息包括定位子载波间隔Δf prs；
其中，本发明实施例所述Δf prs≤Δf sys(即，系统子载波间隔，或者也可以称为，系统子载波间隔宽度，并且，本发明实施例的定位子载波间隔，也可以称为，定位子载波间隔宽度)，且Δf sys＝Δf prs*2 λ，其中，λ为自然数；
并且，本发明实施例所述定位频域序列的长度为所分配的频域资源的系统子载波个数*2 λ，。且所述系统子载波间隔Δf sys为定位子载波间隔Δf prs*2 λ；所述
Figure PCTCN2018105683-appb-000007
个连续系统符号数＝2 λ。
本发明实施例是根据预设的时频资源信息和定位基站标识id，按照1/2 λ个系统子载波间隔来生成定位频域序列，实现将定位参考信号配置为小子载波间隔。
本发明实施例中，
Figure PCTCN2018105683-appb-000008
由各个信道和参考信号所占的资源和其优先级决定，分配方式的特点为确保其中至少包含两个连续的系统符号用于发送PRS；
需要说明的是，本发明实施例所述的系统符号包括OFDM符号等等符号。
图3是5G中不同的子载波间隔的示意图，通过图3可知，随着系统子载波间隔的增加，CP长度越来越小，图5是本发明实施例的将多个系统符号合成一个定位参考信号的示意图，如图5所示，本发明实施例通过将连续2 2个系统符号配置为本发明的一个定位符号。
S402、基于所述定位频域序列，生成连续系统符号时间内的连续的定位时域数据。
这里，连续系统符号的数量为
Figure PCTCN2018105683-appb-000009
个。
也就是说，本发明实施例是通过根据预设的定位子载波间隔生成定位 频域序列，并根据该定位频域序列生成
Figure PCTCN2018105683-appb-000010
个连续系统符号时间内的连续的定位时域数据，即，本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰，并进而有效解决了相关技术中由于5G中子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
本发明实施例中，还包括预先分配时频资源信息和系统配置信息；
其中，所述时频资源信息还包括频域系统子载波个数
Figure PCTCN2018105683-appb-000011
和系统子载波编号，以及在
Figure PCTCN2018105683-appb-000012
个系统子载波间隔的系统符号内分配的频域连续的频域资源；所述系统配置信息还包括定位基站id和系统子载波间隔。
实施时，本发明实施例通过定位基站，或者由通信系统，来分配时频资源信息和系统配置信息。
并且在分配时，就将系统子载波和定位子载波按照Δf sys＝Δf prs*2 λ进行配置，以在步骤401中，按照预设的Δf prs生成定位频域序列，从而实现将定位参考信号配置为小子载波间隔。
表1为本发明实施例5G中不同子载波间隔配置，如表1所示。
表1
μ Δf＝2 μ·15[kHz] CP
0 15 常规CP
1 30 常规CP
2 60 常规CP，扩展CP
3 120 常规CP
4 240 常规CP
表2为本发明实施例不同子载波带宽下的CP配置，如表2所示，本发明实施例在定位子载波间隔为15时，对应的系统符号长度位66.67，CP长度为4.69，定位参考信号总长度为71.36。
表2
Figure PCTCN2018105683-appb-000013
本发明实施例中，步骤S401包括：
确定定位频域序列长度
Figure PCTCN2018105683-appb-000014
其中，λ为自然数；根据系统子载波编号和定位基站id，按照预设的定位子载波间隔生成长度为
Figure PCTCN2018105683-appb-000015
的定位频域序列
Figure PCTCN2018105683-appb-000016
其中，λ和k均为自然数。
实施时，本发明实施例是通过按照3GPP标准中规定的方法生成定位频域序列，当然，本领域的技术人员也可以通过其他方法来生成定位频域序列，本发明对此不作限定。
本发明实施例中，步骤S402可以包括：对所述定位频域序列进行傅里叶变换得到连续
Figure PCTCN2018105683-appb-000017
个系统符号时间段内的定位时域数据。
本发明实施例中，对所述定位频域序列进行傅里叶变换，根据
Figure PCTCN2018105683-appb-000018
得到包含CP在内的
Figure PCTCN2018105683-appb-000019
个连续系统符号时间内的连续的定位时域序列{y i，i∈[-cpsize prs，FFTSIZE-1]}，其中y i＝Y(i*Ts)，j为复数符号，，基带采样周期
Figure PCTCN2018105683-appb-000020
cpsize prs等于Δf prs对应的循环前缀CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
Figure PCTCN2018105683-appb-000021
个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
本发明实施例通过根据定位频域序列，生成
Figure PCTCN2018105683-appb-000022
个连续系统符号时间段内的时域数据，即，实现将多个系统符号生成一个定位符号，可参见图5。
本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰，并进而有效解决了相关技术中由于5G中子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
本发明实施例还提供了一种定位参考信号的生成方法，本发明实施例在5G中生成PRS的方法包括以下步骤：
第一步，给定位参考信号分配时间上连续的时频资源信息和确定系统子载波间隔、定位子载波间隔、PRSid(即，定位基站标识)配置等系统配置信息：
其中，时频资源信息包括：分配的时间上连续的系统符号数为
Figure PCTCN2018105683-appb-000023
频域系统子载波个数
Figure PCTCN2018105683-appb-000024
和系统子载波编号。
本发明实施例所述
Figure PCTCN2018105683-appb-000025
由各个信道和参考信号所占的资源和其优先级决定，分配方式的特点为确保其中至少包含两个连续的OFDM符号用于发送PRS；
系统配置信息包括：PRSid、系统子载波间隔、定位子载波间隔等，系统子载波间隔配置信息如图3所示；定位子载波间隔配置如图5所示，同时满足：系统子载波间隔Δf sys＞＝定位子载波带宽Δf prs，且Δf sys＝Δf prs*2 λ。
第二步 依据定位子载波间隔配置信息、时频资源信息和PRSid信息，生成所要发送的定位频域序列。包含如下步骤：
(1)确定定位频域序列长度：定位PRS序列长度
Figure PCTCN2018105683-appb-000026
(2)根据PRSid、时频资源信息，按照定位子载波间隔生成长度为
Figure PCTCN2018105683-appb-000027
的定位频域序列。
本发明实施例生成定位频域序列的生成方法包括但不限于满足3GPP标准中规定的方法。生成的定位频域序列为定位频域序列
Figure PCTCN2018105683-appb-000028
Figure PCTCN2018105683-appb-000029
第三步 生成
Figure PCTCN2018105683-appb-000030
个连续系统符号时间内的连续定位时域数据。
对所述定位频域序列进行傅里叶变换，根据
Figure PCTCN2018105683-appb-000031
得到包含CP在内的
Figure PCTCN2018105683-appb-000032
个连续系统符号时间内的连续的定位时域序列{y i，i∈[-cpsize prs，FFTSIZE-1]}，其中y i＝Y(i*Ts)，j为复数符号，，基带采样周期
Figure PCTCN2018105683-appb-000033
cpsize prs等于Δf prs对应的循环前缀CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
Figure PCTCN2018105683-appb-000034
个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
在一实施例中，本发明实施例是在范围CP取值后乘以T s，做为Y(t) 中的t参量，得到时域序列CP。T s为基带采样周期为：
Figure PCTCN2018105683-appb-000035
CP作为连续
Figure PCTCN2018105683-appb-000036
个系统符号时间段内的时域数据。其中CPsize prs等于表1中Δf prs对应的CP长度除以T S。
本发明实施例所述方法，解决了CP过短限制定位基站覆盖范围的问题，使得在系统配置为高子载波间隔，小CP的情况下，能够将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰。
在一实施例中，在100M带宽、系统子载波间隔240k，定位子载波间隔15k下，定位参考信号生成包括：
(1)给定位参考信号分配时频资源信息和系统子载波间隔、定位子载波间隔、PRSid等配置信息；
分配连续系统符号数为
Figure PCTCN2018105683-appb-000037
频域系统子载波个数
Figure PCTCN2018105683-appb-000038
和系统子载波编号，系统带宽BW＝100MHz，Δf sys＝240kHz，Δf prs＝15kHz。
(2)依据定位子载波间隔、时频资源信息和PRSid信息，生成所要发送的定位频域序列；
确定定位频域序列长度：定位频域序列长度
Figure PCTCN2018105683-appb-000039
λ＝4。
生成定位频域序列：生成定位频域序列
Figure PCTCN2018105683-appb-000040
(3)生成
Figure PCTCN2018105683-appb-000041
个连续系统符号时间内的连续定位时域数据；
对所述定位频域序列进行傅里叶变换，根据
Figure PCTCN2018105683-appb-000042
得到包含CP在内的
Figure PCTCN2018105683-appb-000043
个连续系统符号时间内的连续的定位时域序列{y i，i∈[-cpsize prs，FFTSIZE-1]}，其中y i＝Y(i* Ts)，j为复数符号，，基带采样周期
Figure PCTCN2018105683-appb-000044
cpsize prs等于Δf prs对应的循环前缀CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
Figure PCTCN2018105683-appb-000045
个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
CP，为连续
Figure PCTCN2018105683-appb-000046
个系统符号的时域数据，其中cpsize prs等于表1中Δf prs对应的CP长度除以T S。
在100M带宽下、系统子载波间隔120k，定位子载波间隔30k下，定位参考信号生成包括：
(1)给定位参考信号分配时频资源信息和确定系统子载波间隔、定位子载波间隔以及PRSid配置信息：
分配连续系统符号数为
Figure PCTCN2018105683-appb-000047
频域系统子载波个数
Figure PCTCN2018105683-appb-000048
和系统子载波编号。系统带宽BW＝100MHz，Δf sys＝120kHz，Δf prs＝30kHz。
(2)依据定位子载波间隔、时频资源信息和PRSid信息，生成所要发送的PRS序列；
确定定位频域序列长度
Figure PCTCN2018105683-appb-000049
λ＝2。
生成定位频域序列：生成的定位频域序列
Figure PCTCN2018105683-appb-000050
(3)生成
Figure PCTCN2018105683-appb-000051
个连续系统符号时间内的连续定位时域数据；
对所述定位频域序列进行傅里叶变换，根据
Figure PCTCN2018105683-appb-000052
得到包含CP在内的
Figure PCTCN2018105683-appb-000053
个连续系统符号时间内的连续的定位时域序列{y i，i∈[-cpsize prs，FFTSIZE-1]}，其中y i＝Y(i*Ts)，j为复数符号，，基带采样周期
Figure PCTCN2018105683-appb-000054
cpsize prs等于Δf prs对应的循环前缀CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
Figure PCTCN2018105683-appb-000055
个连续系统符号时间＝ (cpsize prs+FFTSIZE)*T S。
CP为连续
Figure PCTCN2018105683-appb-000056
个系统符号的时域数据。其中cpsize prs等于表1中Δf prs对应的CP长度除以T S。
图6是本发明实施例提供的另一种定位参考信号的生成方法的流程示意图，下面将结合图6对本发明实施例的定位参考信号的生成方法进行详细的解释和说明：
S601、确定系统子载波间隔、定位子载波间隔、并分配时间上连续的时频资源；
即，分配时频资源信息和系统配置信息；
S602、根据时频资源和定位子载波间隔生成定位频域序列；
S603、将连续的系统符号一个定位符号，根据定位频域序列生成时间上连续的多个系统符号的定位时域数据。
本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围。
本发明实施例提供了一种定位参考信号的生成装置，参见图7，该装置包括：
第一生成单元71，配置为根据所述时频资源信息和所述系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000057
所述系统配置信息包括定位子载波间隔Δf prs；
第二生成单元72，配置为基于所述定位频域序列，生成所述
Figure PCTCN2018105683-appb-000058
个连续系统符号时间内的连续的定位时域数据。
也就是说，本发明实施例是通过第一生成单元71根据预设的定位子载波间隔生成定位频域序列，并通过第二生成单元72根据该定位频域序列生 成
Figure PCTCN2018105683-appb-000059
个连续系统符号时间内的连续的定位时域数据，即，本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰，并进而有效解决了相关技术中由于5G中子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
本发明实施例中，所述时频资源信息包括预分配的2 λ个系统符号数
Figure PCTCN2018105683-appb-000060
频域系统子载波个数
Figure PCTCN2018105683-appb-000061
和系统子载波编号；所述系统配置信息包括基站的id、系统子载波间隔和定位子载波间隔。
实施时，本发明实施例通过执行定位的基站，或者由通信系统，来分配时频资源信息和系统配置信息。
并且在分配时，就将系统子载波和定位子载波按照Δf sys＝Δf prs*2 λ进行配置，以使第一生成单元71能够按照预设的Δf prs生成定位频域序列，从而实现将定位参考信号配置为小子载波间隔。
表1为本发明实施例5G中不同子载波间隔配置，如表1所示。
表1
Figure PCTCN2018105683-appb-000062
表2为本发明实施例不同子载波带宽下的CP配置，如表2所示，本发 明实施例在定位子载波间隔为15时，对应的系统符号长度位66.67，CP长度为4.69，定位参考信号总长度为71.36。
表2
Figure PCTCN2018105683-appb-000063
本发明的一个优选实施例，所述第一生成单元71还配置为，确定定位频域序列长度
Figure PCTCN2018105683-appb-000064
根据系统子载波编号和定位基站id，按照预设的定位子载波间隔生成长度为
Figure PCTCN2018105683-appb-000065
的定位频域序列
Figure PCTCN2018105683-appb-000066
实施时，本发明实施例的第一生成单元71是通过按照3GPP标准中规定的方法生成定位频域序列，当然，本领域的技术人员也可以通过其他方法来生成定位频域序列，本发明对此不作限定。
本发明的一个优选实施例，所述第二生成单元72还配置为，对所述定位频域序列进行傅里叶变换得到连续
Figure PCTCN2018105683-appb-000067
个系统符号时间段内的定位时域数据。
在一实施例中，本发明实施例所述第二生成单元还配置为，对所述定位频域序列进行傅里叶变换，根据
Figure PCTCN2018105683-appb-000068
得到包含CP在内的
Figure PCTCN2018105683-appb-000069
个连续系统符号时间内的连续的定位时域序列{y i，i∈[-cpsize prs，FFTSIZE-1]}，其中y i＝Y(i*Ts)，j为复数符号，，基带采样周期
Figure PCTCN2018105683-appb-000070
cpsize prs等于Δf prs对应的循环前缀CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
Figure PCTCN2018105683-appb-000071
Figure PCTCN2018105683-appb-000072
个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
本发明实施例通过根据定位频域序列，生成
Figure PCTCN2018105683-appb-000073
个连续系统符号时间段内的时域数据，即，实现将多个系统符号生成一个定位符号，可参见图5。
本发明实施例是将多个系统符号转换为一个定位符号，从而有效增加了CP长度，使得在系统配置为高子载波间隔，小CP的情况下，将定位参考信号配置为小子载波间隔，长CP长度，进而增大定位网络的覆盖范围，使得OTDOA定位技术具有更高的可行性，同时有效避免了定位参考信号对其他信号的干扰，并进而有效解决了相关技术中由于5G中子载波间隔增大，使得CP长度变短，而导致的在5G场景中无法有效的完成OTDOA定位问题。
本发明第四实施例提供了一种通信系统，所述通信系统包括本发明实施例所述的定位参考信号的生成装置，可参见本发明实施例进行理解，在此不做详细论述。
本发明实施例提供一种存储介质，所述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下方法步骤：
根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000074
所述系统配置信息包括定位子载波间隔Δf prs；
基于所述定位频域序列，生成所述
Figure PCTCN2018105683-appb-000075
个连续系统符号时间内的连续的定位时域数据。
本实施例所述存储介质包括但不限于为：只读存储器(Read-Only  Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁盘或光盘等。
本发明实施例提供一种定位参考信号的生成装置，如图8所示，所述定位参考信号的生成装置包括：存储器81、处理器82及存储在所述存储器81上并可在所述处理器82上运行的定位参考信号的生成程序，所述定位参考信号的生成程序被所述处理器82执行时实现如下方法步骤：
根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
Figure PCTCN2018105683-appb-000076
所述系统配置信息包括定位子载波间隔Δf prs；
基于所述定位频域序列，生成所述
Figure PCTCN2018105683-appb-000077
个连续系统符号时间内的连续的定位时域数据。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。

Claims (13)

  1. 一种定位参考信号PRS的生成方法，包括：
    根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
    Figure PCTCN2018105683-appb-100001
    所述系统配置信息包括定位子载波间隔Δf prs；
    基于所述定位频域序列，生成所述
    Figure PCTCN2018105683-appb-100002
    个连续系统符号时间内的连续的定位时域数据。
  2. 如权利要求1所述的方法，其中，
    所述定位频域序列的长度为所分配的频域资源的系统子载波个数*2 λ，其中，λ为自然数。
  3. 如权利要求1所述的方法，其中，
    所述系统配置信息还包括定位基站标识id和系统子载波间隔；
    所述时频资源信息还包括频域系统子载波个数
    Figure PCTCN2018105683-appb-100003
    和系统子载波编号，以及在
    Figure PCTCN2018105683-appb-100004
    个系统子载波间隔的系统符号内分配的频域连续的频域资源。
  4. 如权利要求3所述的方法，其中，
    所述定位子载波间隔Δf prs为所述系统子载波间隔Δf sys*1/2 λ；
    所述
    Figure PCTCN2018105683-appb-100005
    个连续系统符号数＝2 λ,其中，λ为自然数。
  5. 如权利要求4所述的方法，其中，所述根据时频资源信息和系统配置信息，生成定位频域序列，包括：
    确定定位频域序列长度
    Figure PCTCN2018105683-appb-100006
    根据所述系统子载波编号和所述定位基站id，按照所述定位子载波间隔生成长度为
    Figure PCTCN2018105683-appb-100007
    的定位频域序列
    Figure PCTCN2018105683-appb-100008
    其中，k为自然数。
  6. 如权利要求5所述的方法，其中，所述基于所述定位频域序列，生成所述
    Figure PCTCN2018105683-appb-100009
    个连续系统符号时间内的连续的定位时域数据，包括：
    对所述定位频域序列进行傅里叶变换，根据
    Figure PCTCN2018105683-appb-100010
    得到包含循环前缀CP在内的
    Figure PCTCN2018105683-appb-100011
    个连续系统符号时间内的连续的定位时域序列{y i,i∈[-cpsize prs,FFTSIZE-1]},其中y i＝Y(i*Ts)，j为复数符号,,基带采样周期
    Figure PCTCN2018105683-appb-100012
    cpsize prs等于Δf prs对应的CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
    Figure PCTCN2018105683-appb-100013
    个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
  7. 一种定位参考信号PRS的生成装置，包括：
    第一生成单元，配置为根据时频资源信息和系统配置信息，生成定位频域序列；其中，所述时频资源信息包括分配时间上连续的系统符号数
    Figure PCTCN2018105683-appb-100014
    所述系统配置信息包括定位子载波间隔Δf prs；
    第二生成单元，配置为基于所述定位频域序列，生成所述
    Figure PCTCN2018105683-appb-100015
    个连续系统符号时间内的连续的定位时域数据。
  8. 如权利要求7所述的装置，其中，
    所述系统配置信息还包括定位基站标识id和系统子载波间隔；
    所述时频资源信息还包括频域系统子载波个数
    Figure PCTCN2018105683-appb-100016
    和系统子载波编号，以及在
    Figure PCTCN2018105683-appb-100017
    个系统子载波间隔的系统符号内分配的频域连续的频域资源。
  9. 如权利要求8所述的装置，其中，
    所述第一生成单元还配置为，确定定位频域序列长度
    Figure PCTCN2018105683-appb-100018
    其中，λ为自然数；根据所述系统子载波编号和所述定位基站id，按照所述定位子载波间隔生成长度为
    Figure PCTCN2018105683-appb-100019
    的定位频 域序列
    Figure PCTCN2018105683-appb-100020
    其中，k为自然数。
  10. 如权利要求9所述的装置，其中，
    所述第二生成单元还配置为，对所述定位频域序列进行傅里叶变换，根据
    Figure PCTCN2018105683-appb-100021
    得到包含循环前缀CP在内的
    Figure PCTCN2018105683-appb-100022
    个连续系统符号时间内的连续的定位时域序列{y i,i∈[-cpsize prs,FFTSIZE-1]},其中y i＝Y(i*Ts)，j为复数符号,,基带采样周期
    Figure PCTCN2018105683-appb-100023
    cpsize prs等于Δf prs对应的CP时间长度除以T S，FFTSIZE为预设带宽内子载波间隔为Δf prs的最大子载波个数，且
    Figure PCTCN2018105683-appb-100024
    个连续系统符号时间＝(cpsize prs+FFTSIZE)*T S。
  11. 一种通信系统，所述通信系统包括权利要求7-10中任意一项所述的定位参考信号PRS的生成装置。
  12. 一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被至少一个处理器执行时，以实现权利要求1-6中任意一项所述的定位参考信号PRS的生成方法。
  13. 一种定位参考信号PRS的生成装置，包括：
    存储器，配置为存储PRS的生成程序；
    处理器，配置为运行所述程序，其中，所述程序运行时执行权利要求1至6中任一项所述的PRS的生成方法。
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11711827B2 (en) * 2020-04-09 2023-07-25 Qualcomm Incorporated Downlink positioning reference signal configuration and processing in full duplex scenarios
US11616617B2 (en) * 2020-11-16 2023-03-28 Jaihyung Cho Method for transmitting reference signal for positioning and apparatus for the same
EP4364368A2 (en) * 2021-06-30 2024-05-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for providing a modified ofdm frame structure
CN113727334B (zh) * 2021-08-26 2023-03-28 中国联合网络通信集团有限公司 一种终端定位方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101156405A (zh) * 2005-04-15 2008-04-02 诺基亚公司 使用可变保护间隔在多载波系统中同步的方法
CN105162510A (zh) * 2009-03-23 2015-12-16 Lg电子株式会社 在多天线系统中发射参考信号的方法和设备
US20160134402A1 (en) * 2014-10-29 2016-05-12 Lg Electronics Inc. Method and apparatus for receiving reference signal in wireless communication system
CN107889212A (zh) * 2016-09-30 2018-04-06 中兴通讯股份有限公司 一种定位的方法和设备

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101738162B1 (ko) * 2009-04-10 2017-05-22 엘지전자 주식회사 무선 통신 시스템에서 포지셔닝 참조 신호 전송 방법 및 장치
CN101594335B (zh) * 2009-06-19 2017-02-08 中兴通讯股份有限公司 参考信号和物理资源块的映射方法
US8891480B2 (en) * 2009-07-01 2014-11-18 Qualcomm Incorporated Positioning reference signals in a telecommunication system
CN102833849B (zh) 2012-08-21 2014-11-05 华为技术有限公司 定位的方法和用户设备
US10439775B2 (en) * 2014-09-02 2019-10-08 Qualcomm Incorporated Randomization of PRS frequency offsets and muting patterns in LTE for EOTDOA
US10637619B2 (en) * 2014-11-03 2020-04-28 Samsung Electronics Co., Ltd. Method and apparatus for channel access for LTE on unlicensed spectrum
WO2016093662A1 (ko) * 2014-12-12 2016-06-16 엘지전자 주식회사 기계타입통신을 지원하는 무선접속시스템에서 포지셔닝 참조신호를 전송하는 방법 및 장치
CN105743626B (zh) * 2014-12-30 2020-09-15 北京三星通信技术研究有限公司 一种下行信道和/或下行参考信号的接收方法和设备
KR102517847B1 (ko) * 2015-01-26 2023-04-04 애플 인크. 이종 기준 신호를 사용한 otdoa(관측된 도달 시간차) 포지셔닝 향상
CN106162922B (zh) * 2015-01-27 2021-01-26 中兴通讯股份有限公司 发现信号的处理方法及装置
US20170180095A1 (en) * 2015-12-22 2017-06-22 Samsung Electronics Co., Ltd. Method and apparatus for operating narrow bandwidth communications in wireless communication system
CN107231690B (zh) 2016-03-25 2023-07-04 中兴通讯股份有限公司 信息发送方法及装置
CN107465497B (zh) * 2016-06-03 2021-08-06 中兴通讯股份有限公司 定位参考信号的传输方法和装置
WO2018025794A1 (ja) * 2016-08-04 2018-02-08 シャープ株式会社 基地局装置、ロケーションサーバーおよび通信方法
US10547421B2 (en) * 2016-09-30 2020-01-28 Qualcomm Incorporated Scheduling for positioning reference signal (PRS) in narrowband-internet of things (NB-IoT)
CN108023698B (zh) * 2016-11-03 2021-01-29 华为技术有限公司 配置参考信号的方法和装置
CN108023704B (zh) * 2016-11-04 2021-10-26 华为技术有限公司 一种传输参考信号的方法、网络侧设备和用户设备
CN108023699B (zh) * 2016-11-04 2020-12-15 华为技术有限公司 信号传输方法和装置
CN108111279B (zh) * 2017-08-21 2022-06-03 中兴通讯股份有限公司 参考信号传输、参数发送方法及装置、终端、基站
EP3681117A4 (en) * 2017-09-08 2021-04-14 NTT DoCoMo, Inc. USER TERMINAL DEVICE AND WIRELESS COMMUNICATION PROCEDURE
CN108260219B (zh) * 2018-01-12 2021-11-12 中兴通讯股份有限公司 一种参考信号的接收和发送方法、设备及计算机可读存储介质
CN110365455B (zh) * 2018-04-09 2021-07-30 大唐移动通信设备有限公司 一种定位参考信号传输方法及装置
CN110635876B (zh) * 2018-06-22 2020-11-06 维沃移动通信有限公司 Nr系统的定位参考信号配置、接收方法和设备
CN110808820B (zh) * 2018-07-20 2021-09-17 大唐移动通信设备有限公司 一种定位参考信号传输方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101156405A (zh) * 2005-04-15 2008-04-02 诺基亚公司 使用可变保护间隔在多载波系统中同步的方法
CN105162510A (zh) * 2009-03-23 2015-12-16 Lg电子株式会社 在多天线系统中发射参考信号的方法和设备
US20160134402A1 (en) * 2014-10-29 2016-05-12 Lg Electronics Inc. Method and apparatus for receiving reference signal in wireless communication system
CN107889212A (zh) * 2016-09-30 2018-04-06 中兴通讯股份有限公司 一种定位的方法和设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3833058A4

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