WO2019096211A1 - Reconfigurable antenna-based positioning method and system - Google Patents

Reconfigurable antenna-based positioning method and system Download PDF

Info

Publication number
WO2019096211A1
WO2019096211A1 PCT/CN2018/115677 CN2018115677W WO2019096211A1 WO 2019096211 A1 WO2019096211 A1 WO 2019096211A1 CN 2018115677 W CN2018115677 W CN 2018115677W WO 2019096211 A1 WO2019096211 A1 WO 2019096211A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
time
beams
time difference
downlink signal
Prior art date
Application number
PCT/CN2018/115677
Other languages
French (fr)
Chinese (zh)
Inventor
唐彦波
Original Assignee
捷开通讯(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 捷开通讯(深圳)有限公司 filed Critical 捷开通讯(深圳)有限公司
Publication of WO2019096211A1 publication Critical patent/WO2019096211A1/en

Links

Classifications

    • 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

Definitions

  • the present application relates to the field of communication and positioning technologies, and in particular, to a positioning method and a positioning system based on a reconfigurable antenna.
  • the commonly used positioning technology generally includes TOA (Time Of Arrival, time difference of arrival) positioning technology, TDOA (Time Difference of Arrival, positioning time difference) positioning technology, and AOA (Angle of Arrival) positioning technology.
  • TOA positioning technology also known as the circumferential positioning technology
  • TDOA positioning technology also known as the hyperbolic positioning technology
  • the embodiment of the present application provides a positioning method and a positioning system based on a reconfigurable antenna, which can improve the accuracy of positioning, and the hardware cost is low.
  • the embodiment of the present application provides a positioning method based on a reconfigurable antenna, including:
  • the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain a first incident angle of the first antenna to the UE, where the first antenna is a reconfigurable antenna
  • the first antenna is configured to form a directional beam with a beam direction in a range of 0° to 360° through a single radio frequency link;
  • the first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE;
  • a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
  • the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference between the downlink signal and the UE, including:
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
  • obtaining a time or time difference that a downlink signal arrives at the UE in each measurement period includes:
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
  • the first antenna transmits four of the first beams and twelve of the second beams.
  • the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain the first antenna to the UE.
  • the first angle of incidence including:
  • the first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
  • the method further includes:
  • the UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
  • the embodiment of the present application further provides a positioning method based on a reconfigurable antenna, including:
  • the first antenna transmits a plurality of second beams to the surroundings, each second beam is smaller than a scanning angle of each first beam, and scans, by using the second beam, the uplink signal sent by the UE in the first incident angle to obtain the first antenna to the UE.
  • Second incident angle ;
  • the first antenna and the two second antennas located at different locations simultaneously transmit downlink signals to the UE, and obtain time or time difference that the downlink signals arrive at the UE;
  • the position of the UE is located according to a second angle of incidence and a time or time difference.
  • a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
  • the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference between the downlink signal and the UE, including:
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
  • obtaining a time or time difference that a downlink signal arrives at the UE in each measurement period includes:
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
  • the first antenna transmits four of the first beams and twelve of the second beams.
  • the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain the first antenna to the UE.
  • the first angle of incidence including:
  • the first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
  • the method further includes:
  • the UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
  • the embodiment of the present application further provides a positioning system based on a reconfigurable antenna, including a processor, and a first antenna and two second antennas connected to the processor and located at different positions.
  • the first antenna is configured to transmit a plurality of first beams to the surroundings, and scan the uplink signals transmitted by the UE by using the multiple first beams;
  • the processor is configured to obtain a first incident angle of the first antenna to the UE according to the multiple first beams;
  • the first antenna is further configured to transmit a plurality of second beams to the surroundings, each second beam being smaller than a scanning angle of each first beam, and scanning, by the second beam, an uplink signal transmitted by the UE in the first incident angle;
  • the processor is configured to obtain a second incident angle of the second antenna to the UE according to the multiple second beams;
  • the first antenna is further configured to simultaneously transmit a downlink signal to the UE with the two second antennas;
  • the processor is further configured to obtain a time or time difference that the downlink signal arrives at the UE;
  • the processor is further for locating the location of the UE based on the second angle of incidence and the time or time difference.
  • a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective ones in each measurement period.
  • the processor acquires a time or time difference that the downlink signal arrives at the UE in each measurement period, and selects the one with the smallest time as the time or time difference of the downlink signal to the UE.
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times, and the processor acquires each downlink.
  • the time or time difference at which the signal arrives at the UE, and the one with the smallest time is selected as the time or time difference at which the downlink signal arrives at the UE.
  • the first antenna transmits four of the first beams and twelve of the second beams.
  • the first antenna is configured to transmit a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and pass the first beams in the multiple different directions. Scanning the uplink signal transmitted by the UE;
  • the processor is configured to obtain a first incident angle of the first antenna to the UE according to the first beam of the multiple different directions.
  • the embodiment of the present application is based on the AOA positioning technology, and firstly uses the first beam with a wide scanning range to roughly determine the incident angle of the UE, and then uses the second beam with a fine scanning range to accurately determine the incident angle of the UE, and performs two scans.
  • the accuracy of the incident angle recognition can be improved, and then the TOA or TDOA positioning technology is used to acquire the time or time difference of the downlink signal to the UE, and the integrated incident angle and the time or time difference are used to locate the UE, which is equivalent to the AOA positioning technology and TOA or TDOA.
  • the signal feature measurement values of the positioning technology are combined for hybrid positioning, which can fully utilize the signal feature measurement value, avoids the disadvantages of the single positioning technology, and can improve the positioning accuracy, and the present application is based on the reconfigurable antenna transmitting beam without increasing the phase. Hardware such as the corresponding RF link, so the hardware cost is low.
  • FIG. 1 is a schematic structural diagram of an embodiment of a positioning system based on a reconfigurable antenna according to the present application
  • FIG. 2 is a schematic flow chart of an embodiment of a method for positioning a reconfigurable antenna according to the present application
  • FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a scenario of downlink signal multipath transmission according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another embodiment of a positioning system based on a reconfigurable antenna according to the present application.
  • the main purpose of the present application is to combine the AOA positioning technology with the signal characteristic measurement values of the TOA or TDOA positioning technology for hybrid positioning, which can fully utilize the signal characteristic measurement values, thereby avoiding the disadvantages of the single positioning technology, thereby improving the positioning.
  • Accuracy, and the present application is based on the reconfigurable antenna transmitting the corresponding beam, without the need to add hardware such as the corresponding RF link as the AOA positioning technology, and thus the hardware cost is low.
  • the UEs targeted by the present application include, but are not limited to, mobile terminals such as a smart phone, a PC (Personal Computer), a PDA (Personal Digital Assistant, a personal digital assistant, or a tablet), and are worn on the body or embedded in clothing, jewelry,
  • the wearable device in the accessory only needs to have the wireless communication signal transceiving function.
  • the positioning system includes three base stations: eNB1, eNB2, and eNB3, and the three base stations are connected through network devices (such as routers and networks).
  • the ingress node, etc. 11 accesses the wireless network and transmits the uplink signal and the downlink signal to and from the UE 12.
  • the eNB1, the eNB2, and the eNB3 are respectively provided with one antenna, which are respectively a first antenna and two second antennas, and the three base stations respectively transmit an uplink signal and receive a downlink signal through respective antennas.
  • FIG. 2 is a schematic flow chart of a method for positioning a reconfigurable antenna according to an embodiment of the present application. Referring to FIG. 2, the positioning method of this embodiment includes steps S21 to S24.
  • the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the multiple first beams to obtain a first incident angle of the first antenna to the UE.
  • the first antenna transmits a plurality of second beams to the surroundings, each second beam is smaller than a scanning angle of each first beam, and scans, by using the second beam, an uplink signal sent by the UE in the first incident angle to obtain a first antenna.
  • the second angle of incidence to the UE.
  • the first antenna of this embodiment is a reconfigurable antenna.
  • the so-called reconfigurable antenna refers to a plurality of parameters such as a transmission frequency, a beam direction, and a polarization mode of the first antenna by changing the structure and configuration of the first antenna.
  • the first antenna can have multiple working modes by switching different states, thereby adapting to different application scenarios or changing wireless channel environments.
  • the first antenna can be closely integrated with the baseband processor and the antenna controller to perform joint optimization and implement a software-defined switching mode, which becomes an important part of the SDN network (Software Defined Network). Optimized network coverage while maintaining high-precision positioning.
  • SDN network Software Defined Network
  • the reconfigurable antenna can form a directional beam using only a single RF link, and the beam can be switched in different directions within a 360° range.
  • the number of beams is closely related to the positioning accuracy. Specifically, the more the number of beams, the narrower the scanning range of each beam, and the higher the positioning accuracy.
  • the first antenna can transmit four first beams for calculating a first angle of incidence of the first antenna to the UE, and the twelve second beams are used to calculate a second angle of incidence of the first antenna to the UE.
  • the reconfigurable antenna of this embodiment may also be a top and bottom layer design, for example, the upper layer transmits 4 first beams, and the lower layer transmits 12 second beams.
  • the base station (for example, eNB1) provided with the reconfigurable antenna has no change except the software algorithm of the antenna controller.
  • the base station in this embodiment may include a baseband processor 31, an antenna controller 32, and an RF (Radio Frequency, Radio frequency device 33 and antenna 34, antenna 34 is connected to antenna controller 32 and RF 33, antenna controller 32 is connected to baseband processor 31 and transmits beam under the control of baseband processor 31, and RF 33 implements antenna 34 and baseband processing.
  • RF Radio Frequency, Radio frequency device 33 and antenna 34
  • the connection of the device 31 is used to transmit an uplink signal and a downlink signal between the two, and the baseband processor 31 includes an antenna data processing unit 311, an AOA measurement estimating unit 312, a TOA/TDOA measurement estimating unit 313, and an integrated data processing unit 314.
  • the antenna data processing unit 311 is configured to perform analysis processing on data generated when the antenna 34 communicates, and the AOA measurement estimating unit 312 is configured to calculate an angle of the antenna to the UE, for example, a first incident angle and a second incident angle of the first antenna to the UE.
  • the TOA/TDOA measurement estimation unit 313 is configured to calculate a time or time difference of the downlink signal arriving at the UE, and the integrated data processing unit 314 is configured to calculate the location information of the UE according to the data of the AOA measurement estimation unit 312 and the TOA/TDOA measurement estimation unit 313. .
  • the antenna controller 32 can be preset with a software algorithm, and the software algorithm can control the reconfigurable antenna to transmit different beams, so no additional hardware cost is added.
  • the first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals transmitted by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE.
  • First incident angle For example, the first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals transmitted by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE.
  • First incident angle First incident angle.
  • the eNB1 may control the first antenna to periodically scan or control the first antenna to trigger the scan by using a software algorithm to detect the uplink signal sent by the UE 12, that is, SRS (Sounding) Reference Signal, detection reference signal).
  • the first antenna performs a coarse search in the coverage interval with the first beam having a wide scanning range, obtains a coarse position of the UE 12, and then performs a fine search by using a second beam with a narrow scanning range, and the direction of the second beam is switched. Smaller, only small beam switching is performed within the large beam range after the coarse search. These two scans improve the accuracy of the incident angle recognition.
  • the eNB1 closest to the UE 12 can be used.
  • One beam and the second beam, i.e., the distance between the first antenna and the UE 12 is less than the distance between any one of the second antennas and the UE 12.
  • the first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE.
  • the reflection and scattering of the signal by the obstacle 41 causes a plurality of paths L1, L2, and L3 for signal transmission.
  • the first path L1 is used.
  • the embodiment can detect the transmission time of the first path of the downlink signal between each base station and the UE 12 as the signal feature measurement value of the TOA positioning technology.
  • the embodiment can perform multiple measurements and select one of the measurements with the smallest measurement result as the signal feature measurement value.
  • the TOA is taken as an example.
  • the two second antennas are the same as the first antenna, and are all reconfigurable antennas, the first antenna of eNB1, the second antenna of eNB2, and the second antenna period of eNB3.
  • the respective beam directions are changed, and each time the beam direction is changed, the time when the downlink signal arrives at the UE 12 is acquired, and finally the time measured by the plurality of periods is acquired, and the smallest one is selected as the TOA.
  • the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 multiple times.
  • each of the three antennas can also change the respective beam directions when transmitting the downlink signals.
  • the time when each downlink signal arrives at the UE 12 is obtained, and finally the time measured by the multiple transmissions is acquired, and the one with the smallest time is selected as the time measured in the period.
  • the acquisition principle and process of TDOA and TOA are similar, that is, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 in multiple measurement periods, and the three antennas change their respective beams in each measurement period. Direction, then obtain the time difference of the downlink signal arriving at the UE in each measurement period, and select the one with the smallest time as the TDOA.
  • the principle and process of obtaining the time difference of each measurement period in this embodiment is: in each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 multiple times, wherein each transmission
  • the three antennas can also change the respective beam directions, and then acquire the time when each downlink signal arrives at the UE 12, and finally obtain the time difference measured by multiple transmissions, and select the one with the smallest time as the time difference measured in the period. .
  • the embodiment can transmit the uplink signal to the antennas of the three base stations through the UE 12, and acquire the time or time difference of the uplink signal to each base station as the signal feature measurement. value.
  • the second incident angle obtained by the above S21 and S22 can be regarded as the signal characteristic measurement value of the AOA positioning technology, and the time or time difference obtained by S23 can be regarded as the signal characteristic measurement value of the TOA/TDOA positioning technology, and the two embodiments are used in this embodiment.
  • the signal characteristic measurements of the technology are combined and positioned to form a hybrid positioning technique.
  • the hybrid positioning technology makes full use of the signal feature measurement value.
  • the base station for example, eNB1
  • the base station can measure the distance from the UE to the base station according to the time or time difference, and the base station shortens the positioning according to the auxiliary information provided by the uplink signal, the incident angle of the UE 12 to the base station. Time, to avoid the shortcomings of single positioning technology, thereby improving positioning accuracy.
  • the UE may simultaneously transmit an uplink signal to the first antenna and the two second antennas located at different positions, and acquire the uplink signals respectively. Determining a time or time difference between the first antenna and the two second antennas, and then positioning the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively position.
  • FIG. 5 is a schematic structural diagram of a reconfigurable antenna-based positioning system according to an embodiment of the present application.
  • the positioning system 50 includes a processor 51, and a first antenna 521 and two second antennas 522 that are coupled to the processor 51 and are located at different locations.
  • the three antennas can be respectively disposed on three base stations (e.g., eNB1, eNB2, and eNB3) at different locations.
  • the processor 51 can be a baseband processor of any one of the base stations.
  • the first antenna 521 is configured to transmit a plurality of first beams, for example, four first beams, to the surroundings, and scan the uplink signals transmitted by the UE by using the plurality of first beams.
  • the processor 51 is configured to obtain a first incident angle of the first antenna 521 to the UE according to the plurality of first beams.
  • the first antenna 521 is configured to transmit a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scan the uplink signals transmitted by the UE by using the first beams in the multiple different directions.
  • the processor 51 is configured to obtain a first incident angle of the first antenna 521 to the UE according to the first beam in multiple different directions.
  • the first antenna 521 is further configured to transmit a plurality of second beams, for example, 12 second beams, each of which is smaller than a scanning angle of each first beam, and scans the UE in the first incident angle by using the second beam.
  • the processor 51 is configured to obtain a second incident angle of the second antenna 522 to the UE according to the plurality of second beams.
  • the first antenna 521 is also configured to simultaneously transmit downlink signals to the UE with the two second antennas 522.
  • the processor 51 is configured to obtain a time or time difference of the downlink signal arriving at the UE.
  • the processor 51 is further configured to locate the location of the UE based on the second angle of incidence and the time or time difference.
  • the first beam and the second beam are transmitted by the base station (antenna) closest to the UE. It can be seen that the distance between the first antenna 521 and the UE is smaller than the distance between any one of the second antennas 522 and the UE.
  • the reflection and scattering of the obstacle by the obstacle causes more paths for signal transmission.
  • the first path acts as a direct path between the base station and the UE. Therefore, the present implementation
  • the transmission time of the first path of the downlink signal between each base station and the UE can be detected as a signal characteristic measurement value of the TOA positioning technology. Based on this, the embodiment can perform multiple measurements and select one of the measurements with the smallest measurement result as the signal feature measurement value.
  • the two second antennas 522 are the same as the first antenna 521, and are both reconfigurable antennas.
  • the first antenna 521 and the two second antennas 522 simultaneously transmit downlink signals to the UE in multiple measurement periods, and The respective beam directions are changed in each measurement period, and the processor 51 acquires the time or time difference of the downlink signal reaching the UE in each measurement period, and selects the one with the smallest time as the time or time difference of the downlink signal to the UE.
  • the first antenna 521 and the two second antennas 522 simultaneously transmit downlink signals to the UE multiple times, and the processor 51 acquires the time or time difference of each downlink signal arriving at the UE, and selects The smallest time is the time or time difference that the downlink signal arrives at the UE.
  • the above-described structural elements of the positioning system 50 of the present embodiment correspond to the reconfigurable antenna-based positioning method of the above-described embodiments, and have the same technical effects.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A reconfigurable antenna-based positioning method and system. The method comprises: a first antenna transmits a plurality of first beams to the surroundings, and scans, by means of the plurality of first beams, for uplink signals transmitted by a UE to obtain a first incident angle from the first antenna to the UE (S21); the first antenna transmits a plurality of second beams to the surroundings, the scanning angle for each second beam is smaller than that for each first beam, and scans, by means of the second beams, for uplink signals transmitted by the UE within the first incident angle to obtain a second incident angle from the first antenna to the UE (S22); the first antenna and two second antennas located at different positions simultaneously transmit downlink signals to the UE, and obtains time or a difference in time of arrivals of the downlink signals at the UE (S23); position the UE according to the second incident angle and the time or the difference in time (S24).

Description

基于可重构天线的定位方法及定位系统Positioning method and positioning system based on reconfigurable antenna
本申请要求于2017年11月16日提交中国专利局、申请号为201711141181.X、发明名称为“基于可重构天线的定位方法及定位系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed on November 16, 2017, the Chinese Patent Office, the application number is 201711141181.X, and the invention name is "Reconfigurable antenna based positioning method and positioning system". The citations are incorporated herein by reference.
技术领域Technical field
本申请涉及通信与定位技术领域，具体涉及一种基于可重构天线的定位方法及定位系统。The present application relates to the field of communication and positioning technologies, and in particular, to a positioning method and a positioning system based on a reconfigurable antenna.
背景技术Background technique
根据提取测量参数的不同，常用的定位技术一般包括TOA（Time of Arrival, 到达时间差）定位技术、TDOA（Time Difference of Arrival, 到达时间差）定位技术、以及AOA（Angle of Arrival, 到达角度）定位技术。其中，在采用TOA定位技术（又称圆周定位技术）或TDOA定位技术（又称双曲线定位技术）对UE（User Equipment, 用户设备）进行定位的场景中，UE与基站距离越远，定位精度越高，而与基站距离越近，定位误差越高；而在采用AOA定位技术的定位场景中，UE与基站距离越近，定位精度越高，而距离越远，定位误差越高。由此可见，单独采用任何一种定位技术都难得到最佳的定位效果，如何集中各种定位技术的优势，在保证最低定位需求、不增加网络负担的前提下融合多种定位技术的测量数据并获得最高的定位精度，即，如何以较低的硬件成本获取最高的定位精度是移动定位技术的发展方向之一。According to the different measurement parameters, the commonly used positioning technology generally includes TOA (Time Of Arrival, time difference of arrival) positioning technology, TDOA (Time Difference of Arrival, positioning time difference) positioning technology, and AOA (Angle of Arrival) positioning technology. Among them, in the scenario where the UE (User Equipment, User Equipment) is positioned by using the TOA positioning technology (also known as the circumferential positioning technology) or the TDOA positioning technology (also known as the hyperbolic positioning technology), the farther the UE is from the base station, the positioning accuracy The higher the distance from the base station, the higher the positioning error. In the positioning scenario using the AOA positioning technology, the closer the UE is to the base station, the higher the positioning accuracy, and the farther the distance is, the higher the positioning error is. It can be seen that it is difficult to obtain the best positioning effect by using any kind of positioning technology alone. How to concentrate the advantages of various positioning technologies, and combine the measurement data of multiple positioning technologies under the premise of ensuring the minimum positioning requirement and increasing the network burden. And get the highest positioning accuracy, that is, how to obtain the highest positioning accuracy with lower hardware cost is one of the development directions of mobile positioning technology.
技术问题technical problem
本申请实施例提供一种基于可重构天线的定位方法及定位系统，能够提高定位的精度性，且硬件成本较低。The embodiment of the present application provides a positioning method and a positioning system based on a reconfigurable antenna, which can improve the accuracy of positioning, and the hardware cost is low.
技术解决方案Technical solution
第一方面，本申请实施例提供一种基于可重构天线的定位方法，包括：In a first aspect, the embodiment of the present application provides a positioning method based on a reconfigurable antenna, including:
第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，所述第一天线为可重构天线，所述第一天线用于通过单个射频链路形成波束方向在0°至360°范围内的方向性波束；The first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain a first incident angle of the first antenna to the UE, where the first antenna is a reconfigurable antenna The first antenna is configured to form a directional beam with a beam direction in a range of 0° to 360° through a single radio frequency link;
所述第一天线向周围发射多个第二波束，每一所述第二波束小于每一所述第一波束的扫描角度，通过所述第二波束在所述第一入射角内扫描UE发射的上行信号，得到第一天线到UE的第二入射角；Transmitting, by the first antenna, a plurality of second beams, each of the second beams being smaller than a scanning angle of each of the first beams, and scanning, by using the second beam, the UE to transmit in the first incident angle The uplink signal, obtaining a second incident angle of the first antenna to the UE;
位于不同位置的所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差；The first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE;
根据所述第二入射角和所述时间或时间差定位所述UE的位置。Positioning the UE based on the second angle of incidence and the time or time difference.
在所述的基于可重构天线的定位方法中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。In the reconfigurable antenna-based positioning method, a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
在所述的基于可重构天线的定位方法中，所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差，包括：In the reconfigurable antenna-based positioning method, the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference between the downlink signal and the UE, including:
在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向；The first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that the downlink signal arrives at the UE in each measurement period, and selecting the one with the smallest time as the time or time difference of the downlink signal reaching the UE.
在所述的基于可重构天线的定位方法中，获取各个测量周期内下行信号到达所述UE的时间或时间差，包括：In the reconfigurable antenna-based positioning method, obtaining a time or time difference that a downlink signal arrives at the UE in each measurement period includes:
在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号；During each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that each downlink signal arrives at the UE, and selecting the one with the smallest time as the time or time difference that the downlink signal arrives at the UE.
在所述的基于可重构天线的定位方法中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。In the reconfigurable antenna-based positioning method, the first antenna transmits four of the first beams and twelve of the second beams.
在所述的基于可重构天线的定位方法中，所述第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，包括：In the reconfigurable antenna-based positioning method, the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain the first antenna to the UE. The first angle of incidence, including:
所述第一天线根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。The first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
在所述的基于可重构天线的定位方法中，在所述得到第一天线到UE的第二入射角之后，还包括：In the reconfigurable antenna-based positioning method, after the obtaining the second incident angle of the first antenna to the UE, the method further includes:
UE同时向位于不同位置的所述第一天线和两个第二天线发射上行信号，并获取所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差；The UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
根据所述第二入射角与所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差定位所述UE的位置。And locating the location of the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively.
第二方面，本申请实施例还提供一种基于可重构天线的定位方法，包括：In a second aspect, the embodiment of the present application further provides a positioning method based on a reconfigurable antenna, including:
第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角；Transmitting, by the first antenna, a plurality of first beams to the surroundings, and scanning the uplink signals transmitted by the UE by using the plurality of first beams to obtain a first incident angle of the first antenna to the UE;
第一天线向周围发射多个第二波束，每一第二波束小于每一第一波束的扫描角度，通过第二波束在第一入射角内扫描UE发射的上行信号，得到第一天线到UE的第二入射角；The first antenna transmits a plurality of second beams to the surroundings, each second beam is smaller than a scanning angle of each first beam, and scans, by using the second beam, the uplink signal sent by the UE in the first incident angle to obtain the first antenna to the UE. Second incident angle;
位于不同位置的第一天线和两个第二天线同时向UE发射下行信号，并得到下行信号到达所述UE的时间或时间差；The first antenna and the two second antennas located at different locations simultaneously transmit downlink signals to the UE, and obtain time or time difference that the downlink signals arrive at the UE;
根据第二入射角和时间或时间差定位UE的位置。The position of the UE is located according to a second angle of incidence and a time or time difference.
在所述的基于可重构天线的定位方法中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。In the reconfigurable antenna-based positioning method, a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
在所述的基于可重构天线的定位方法中，所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差，包括：In the reconfigurable antenna-based positioning method, the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference between the downlink signal and the UE, including:
在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向；The first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that the downlink signal arrives at the UE in each measurement period, and selecting the one with the smallest time as the time or time difference of the downlink signal reaching the UE.
在所述的基于可重构天线的定位方法中，获取各个测量周期内下行信号到达所述UE的时间或时间差，包括：In the reconfigurable antenna-based positioning method, obtaining a time or time difference that a downlink signal arrives at the UE in each measurement period includes:
在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号；During each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that each downlink signal arrives at the UE, and selecting the one with the smallest time as the time or time difference that the downlink signal arrives at the UE.
在所述的基于可重构天线的定位方法中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。In the reconfigurable antenna-based positioning method, the first antenna transmits four of the first beams and twelve of the second beams.
在所述的基于可重构天线的定位方法中，所述第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，包括：In the reconfigurable antenna-based positioning method, the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain the first antenna to the UE. The first angle of incidence, including:
所述第一天线根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。The first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
在所述的基于可重构天线的定位方法中，在所述得到第一天线到UE的第二入射角之后，还包括：In the reconfigurable antenna-based positioning method, after the obtaining the second incident angle of the first antenna to the UE, the method further includes:
UE同时向位于不同位置的所述第一天线和两个第二天线发射上行信号，并获取所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差；The UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
根据所述第二入射角与所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差定位所述UE的位置。And locating the location of the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively.
第三方面，本申请实施例还提供一种基于可重构天线的定位系统，包括处理器、以及与处理器连接且位于不同位置的一个第一天线和两个第二天线，In a third aspect, the embodiment of the present application further provides a positioning system based on a reconfigurable antenna, including a processor, and a first antenna and two second antennas connected to the processor and located at different positions.
第一天线用于向周围发射多个第一波束，并通过多个第一波束扫描UE发射的上行信号；The first antenna is configured to transmit a plurality of first beams to the surroundings, and scan the uplink signals transmitted by the UE by using the multiple first beams;
处理器用于根据多个第一波束得到第一天线到UE的第一入射角；The processor is configured to obtain a first incident angle of the first antenna to the UE according to the multiple first beams;
第一天线还用于向周围发射多个第二波束，每一第二波束小于每一第一波束的扫描角度，通过第二波束在第一入射角内扫描UE发射的上行信号；The first antenna is further configured to transmit a plurality of second beams to the surroundings, each second beam being smaller than a scanning angle of each first beam, and scanning, by the second beam, an uplink signal transmitted by the UE in the first incident angle;
处理器用于根据多个第二波束得到第二天线到UE的第二入射角；The processor is configured to obtain a second incident angle of the second antenna to the UE according to the multiple second beams;
第一天线还用于和两个第二天线同时向UE发射下行信号；The first antenna is further configured to simultaneously transmit a downlink signal to the UE with the two second antennas;
处理器还用于得到下行信号到达UE的时间或时间差；The processor is further configured to obtain a time or time difference that the downlink signal arrives at the UE;
处理器还用于根据第二入射角和时间或时间差定位UE的位置。The processor is further for locating the location of the UE based on the second angle of incidence and the time or time difference.
在所述的基于可重构天线的定位系统中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。In the reconfigurable antenna-based positioning system, a distance between the first antenna and the UE is smaller than a distance between the second antenna and the UE.
在所述的基于可重构天线的定位系统中，在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向，所述处理器获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。In the reconfigurable antenna-based positioning system, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective ones in each measurement period. In the beam direction, the processor acquires a time or time difference that the downlink signal arrives at the UE in each measurement period, and selects the one with the smallest time as the time or time difference of the downlink signal to the UE.
在所述的基于可重构天线的定位系统中，在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号，所述处理器获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。In the reconfigurable antenna-based positioning system, in each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times, and the processor acquires each downlink. The time or time difference at which the signal arrives at the UE, and the one with the smallest time is selected as the time or time difference at which the downlink signal arrives at the UE.
在所述的基于可重构天线的定位系统中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。In the reconfigurable antenna-based positioning system, the first antenna transmits four of the first beams and twelve of the second beams.
在所述的基于可重构天线的定位系统中，所述第一天线用于根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号；In the reconfigurable antenna-based positioning system, the first antenna is configured to transmit a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and pass the first beams in the multiple different directions. Scanning the uplink signal transmitted by the UE;
所述处理器用于根据所述多个不同方向的第一波束得到所述第一天线到所述UE的第一入射角。The processor is configured to obtain a first incident angle of the first antenna to the UE according to the first beam of the multiple different directions.
有益效果Beneficial effect
本申请实施例基于AOA定位技术，设计先采用扫描范围较宽的第一波束来粗略判断UE的入射角，而后采用扫描范围较细的第二波束来精确判断UE的入射角，通过两次扫描能够提高入射角识别的精确性，而后基于TOA或TDOA定位技术获取下行信号到达UE的时间或时间差，综合入射角和所述时间或时间差对UE进行定位，相当于将AOA定位技术与TOA或TDOA定位技术的信号特征测量值加以组合进行混合定位，可以充分利用信号特征测量值，避免单一定位技术的缺点，从而能够提高定位的精度性，且本申请基于可重构天线发射波束，无需增加相对应的射频链路等硬件，因此硬件成本较低。The embodiment of the present application is based on the AOA positioning technology, and firstly uses the first beam with a wide scanning range to roughly determine the incident angle of the UE, and then uses the second beam with a fine scanning range to accurately determine the incident angle of the UE, and performs two scans. The accuracy of the incident angle recognition can be improved, and then the TOA or TDOA positioning technology is used to acquire the time or time difference of the downlink signal to the UE, and the integrated incident angle and the time or time difference are used to locate the UE, which is equivalent to the AOA positioning technology and TOA or TDOA. The signal feature measurement values of the positioning technology are combined for hybrid positioning, which can fully utilize the signal feature measurement value, avoids the disadvantages of the single positioning technology, and can improve the positioning accuracy, and the present application is based on the reconfigurable antenna transmitting beam without increasing the phase. Hardware such as the corresponding RF link, so the hardware cost is low.
附图说明DRAWINGS
图1是本申请基于可重构天线的定位系统一实施例的结构示意图；1 is a schematic structural diagram of an embodiment of a positioning system based on a reconfigurable antenna according to the present application;
图2是本申请基于可重构天线的定位方法一实施例的流程示意图；2 is a schematic flow chart of an embodiment of a method for positioning a reconfigurable antenna according to the present application;
图3是本申请一实施例的基站的结构示意图；3 is a schematic structural diagram of a base station according to an embodiment of the present application;
图4是本申请一实施例的下行信号多路径传输的场景示意图；4 is a schematic diagram of a scenario of downlink signal multipath transmission according to an embodiment of the present application;
图5是本申请基于可重构天线的定位系统另一实施例的结构示意图。FIG. 5 is a schematic structural diagram of another embodiment of a positioning system based on a reconfigurable antenna according to the present application.
本发明的实施方式Embodiments of the invention
本申请的主要目的是：将AOA定位技术与TOA或TDOA定位技术的信号特征测量值加以组合进行混合定位，该混合定位可以充分利用信号特征测量值，避免单一定位技术的缺点，由此提高定位的精度性，并且本申请基于可重构天线发射相应的波束，无需如AOA定位技术需要增加相对应的射频链路等硬件，因此硬件成本较低。The main purpose of the present application is to combine the AOA positioning technology with the signal characteristic measurement values of the TOA or TDOA positioning technology for hybrid positioning, which can fully utilize the signal characteristic measurement values, thereby avoiding the disadvantages of the single positioning technology, thereby improving the positioning. Accuracy, and the present application is based on the reconfigurable antenna transmitting the corresponding beam, without the need to add hardware such as the corresponding RF link as the AOA positioning technology, and thus the hardware cost is low.
本申请所定位的UE包括但不限于智能手机、PC（Personal Computer, 个人计算机）、PDA（Personal Digital Assistant，个人数字助理或平板电脑）等移动终端，以及佩戴于肢体或者嵌入于衣物、首饰、配件中的可穿戴设备，只需具备无线通信信号收发功能即可。The UEs targeted by the present application include, but are not limited to, mobile terminals such as a smart phone, a PC (Personal Computer), a PDA (Personal Digital Assistant, a personal digital assistant, or a tablet), and are worn on the body or embedded in clothing, jewelry, The wearable device in the accessory only needs to have the wireless communication signal transceiving function.
本申请基于图1所示的定位系统实现该发明目的，如图1所示，所述定位系统包括eNB1、eNB2及eNB3这3个基站，且这3个基站通过网络设备（例如路由器、网络接入节点等）11接入无线网络，并与UE 12之间进行上行信号和下行信号的传输。其中，eNB1、eNB2以及eNB3分别设置有一个天线，分别为第一天线和两个第二天线，这3个基站分别通过各自的天线发送上行信号和接收下行信号。The present invention achieves the object of the present invention based on the positioning system shown in FIG. 1. As shown in FIG. 1, the positioning system includes three base stations: eNB1, eNB2, and eNB3, and the three base stations are connected through network devices (such as routers and networks). The ingress node, etc. 11 accesses the wireless network and transmits the uplink signal and the downlink signal to and from the UE 12. The eNB1, the eNB2, and the eNB3 are respectively provided with one antenna, which are respectively a first antenna and two second antennas, and the three base stations respectively transmit an uplink signal and receive a downlink signal through respective antennas.
下面将结合本申请实施例中的附图，对本申请所提供的各个示例性的实施例的技术方案进行清楚、完整地描述。在不冲突的情况下，下述各个实施例及其技术特征可以相互组合。The technical solutions of the various exemplary embodiments provided by the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments. The following embodiments and their technical features can be combined with each other without conflict.
图2是本申请一实施例的基于可重构天线的定位方法的流程示意图。请参阅图2，本实施例的定位方法包括步骤S21~S24。2 is a schematic flow chart of a method for positioning a reconfigurable antenna according to an embodiment of the present application. Referring to FIG. 2, the positioning method of this embodiment includes steps S21 to S24.
S21：第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。S21: The first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the multiple first beams to obtain a first incident angle of the first antenna to the UE.
S22：第一天线向周围发射多个第二波束，每一第二波束小于每一第一波束的扫描角度，通过第二波束在第一入射角内扫描UE发射的上行信号，得到第一天线到UE的第二入射角。S22: The first antenna transmits a plurality of second beams to the surroundings, each second beam is smaller than a scanning angle of each first beam, and scans, by using the second beam, an uplink signal sent by the UE in the first incident angle to obtain a first antenna. The second angle of incidence to the UE.
本实施例的第一天线为可重构天线，所谓可重构天线指的是通过改变第一天线的结构和配置，可以使第一天线的发射频率、波束方向、极化方式等多种参数中的一种或几种实现变化。于此，本实施例可以通过切换不同的状态使第一天线具有多种工作模式，从而适应不同的应用场景或不断变化的无线信道环境。更重要的是，第一天线可以与基带处理器和天线控制器紧密结合，进行联合优化，实现软件定义切换工作模式，成为SDN网络（Software Defined Network, 软件定义网络）中的一个重要组成部分，在高精度定位的同时实现优化的网络覆盖。The first antenna of this embodiment is a reconfigurable antenna. The so-called reconfigurable antenna refers to a plurality of parameters such as a transmission frequency, a beam direction, and a polarization mode of the first antenna by changing the structure and configuration of the first antenna. One or several of the implementation changes. In this embodiment, the first antenna can have multiple working modes by switching different states, thereby adapting to different application scenarios or changing wireless channel environments. More importantly, the first antenna can be closely integrated with the baseband processor and the antenna controller to perform joint optimization and implement a software-defined switching mode, which becomes an important part of the SDN network (Software Defined Network). Optimized network coverage while maintaining high-precision positioning.
所述可重构天线仅使用单个射频链路，就能形成方向性波束，并且波束可以在360°范围内的不同方向进行切换。其中，波束的数量与定位精度密切相关，具体地，波束数量越多，每个波束的扫描范围越窄，定位精度越高。基于此，第一天线可以发射四个第一波束用于计算第一天线到UE的第一入射角，及十二个第二波束用于计算第一天线到UE的第二入射角。当然，本实施例的可重构天线也可以为上下2层设计，例如上层发射4个第一波束，下层发射12个第二波束。The reconfigurable antenna can form a directional beam using only a single RF link, and the beam can be switched in different directions within a 360° range. The number of beams is closely related to the positioning accuracy. Specifically, the more the number of beams, the narrower the scanning range of each beam, and the higher the positioning accuracy. Based on this, the first antenna can transmit four first beams for calculating a first angle of incidence of the first antenna to the UE, and the twelve second beams are used to calculate a second angle of incidence of the first antenna to the UE. Certainly, the reconfigurable antenna of this embodiment may also be a top and bottom layer design, for example, the upper layer transmits 4 first beams, and the lower layer transmits 12 second beams.
与传统基站相比，设置有可重构天线的基站（例如eNB1）除了改变天线控制器的软件算法之外，其余硬件结构并未发生变化。如图3所示，本实施例的基站可以包括基带处理器31、天线控制器32、RF（Radio Frequency, 射频件）33以及天线34，天线34与天线控制器32及RF 33连接，天线控制器32与基带处理器31连接并在基带处理器31的控制下发射波束，RF 33实现天线34与基带处理器31的连接并用于在两者之间传输上行信号和下行信号，基带处理器31包括天线数据处理单元311、AOA测量估计单元312、TOA/TDOA测量估计单元313以及综合数据处理单元314，其天线数据处理单元311用于对天线34通信时产生的数据进行分析处理，AOA测量估计单元312用于计算得到天线到UE的角度，例如第一天线到UE的第一入射角及第二入射角，TOA/TDOA测量估计单元313用于计算得到下行信号到达UE的时间或时间差，综合数据处理单元314用于根据AOA测量估计单元312和TOA/TDOA测量估计单元313的数据计算得到UE的位置信息。Compared with the conventional base station, the base station (for example, eNB1) provided with the reconfigurable antenna has no change except the software algorithm of the antenna controller. As shown in FIG. 3, the base station in this embodiment may include a baseband processor 31, an antenna controller 32, and an RF (Radio Frequency, Radio frequency device 33 and antenna 34, antenna 34 is connected to antenna controller 32 and RF 33, antenna controller 32 is connected to baseband processor 31 and transmits beam under the control of baseband processor 31, and RF 33 implements antenna 34 and baseband processing. The connection of the device 31 is used to transmit an uplink signal and a downlink signal between the two, and the baseband processor 31 includes an antenna data processing unit 311, an AOA measurement estimating unit 312, a TOA/TDOA measurement estimating unit 313, and an integrated data processing unit 314. The antenna data processing unit 311 is configured to perform analysis processing on data generated when the antenna 34 communicates, and the AOA measurement estimating unit 312 is configured to calculate an angle of the antenna to the UE, for example, a first incident angle and a second incident angle of the first antenna to the UE. The TOA/TDOA measurement estimation unit 313 is configured to calculate a time or time difference of the downlink signal arriving at the UE, and the integrated data processing unit 314 is configured to calculate the location information of the UE according to the data of the AOA measurement estimation unit 312 and the TOA/TDOA measurement estimation unit 313. .
其中，天线控制器32中可以预置有软件算法，通过软件算法控制可重构天线发射不同的波束，因此不会增加额外的硬件成本。Wherein, the antenna controller 32 can be preset with a software algorithm, and the software algorithm can control the reconfigurable antenna to transmit different beams, so no additional hardware cost is added.
例如，所述第一天线根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。For example, the first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals transmitted by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. First incident angle.
对于步骤S11和S12而言，在具体测量中，eNB1可以控制第一天线周期性扫描或通过软件算法控制第一天线触发扫描，以检测UE 12发送的上行信号，即SRS（Sounding Reference Signal, 探测参考信号）。第一天线先用扫描范围较宽的第一波束在覆盖范围区间内进行粗搜索，获取UE 12的粗略位置，然后采用扫描范围较窄的第二波束进行精细搜索，第二波束的方向切换范围较小，仅是在粗搜索后的大波束范围内进行小波束切换。这两次扫描能够提高入射角识别的精确性。For steps S11 and S12, in a specific measurement, the eNB1 may control the first antenna to periodically scan or control the first antenna to trigger the scan by using a software algorithm to detect the uplink signal sent by the UE 12, that is, SRS (Sounding) Reference Signal, detection reference signal). The first antenna performs a coarse search in the coverage interval with the first beam having a wide scanning range, obtains a coarse position of the UE 12, and then performs a fine search by using a second beam with a narrow scanning range, and the direction of the second beam is switched. Smaller, only small beam switching is performed within the large beam range after the coarse search. These two scans improve the accuracy of the incident angle recognition.
鉴于eNB1与UE 12之间的距离越小，LOS（Line of sight, 视距）路径存在的概率越大，则入射角的测量误差越小，本实施例可以采用距离UE 12最近的eNB1发射第一波束和第二波束，即，第一天线与UE 12之间的距离小于任一个第二天线与UE 12之间的距离。In view of the smaller the distance between the eNB1 and the UE 12, the greater the probability that the LOS (Line of Sight) path exists, the smaller the measurement error of the incident angle. In this embodiment, the eNB1 closest to the UE 12 can be used. One beam and the second beam, i.e., the distance between the first antenna and the UE 12 is less than the distance between any one of the second antennas and the UE 12.
S23：位于不同位置的第一天线和两个第二天线同时向UE发射下行信号，并得到下行信号到达所述UE的时间或时间差。S23: The first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE.
如图4所示，在室内等障碍物较多的无线通信环境中，障碍物41对信号的反射及散射使得信号传输存在多条路径L1、L2、L3，通常情况下，只有首达路径L1作为基站和UE 12之间的直射路径。基于此，本实施例可以检测下行信号在各个基站与UE 12之间的首达路径的传输时间作为TOA定位技术的信号特征测量值。As shown in FIG. 4, in a wireless communication environment with many obstacles such as indoors, the reflection and scattering of the signal by the obstacle 41 causes a plurality of paths L1, L2, and L3 for signal transmission. Generally, only the first path L1 is used. As a direct path between the base station and the UE 12. Based on this, the embodiment can detect the transmission time of the first path of the downlink signal between each base station and the UE 12 as the signal feature measurement value of the TOA positioning technology.
在无线通信环境中，紧跟首达路径之后会有其它多条路径的信号分量到达UE 12，并且它们到达UE 12的时间间隔很短。如果该时间间隔小于无线宽带信号可分辨的时间粒度，就会造成信号特征测量值的测量误差，严重影响最终定位结果的精确性。基于此，本实施例可以进行多次测量，并选取其中测量结果最小的一个作为信号特征测量值。In a wireless communication environment, signal components of other multiple paths arrive at the UE 12 immediately following the first path, and their time interval to the UE 12 is very short. If the time interval is smaller than the time granularity that the wireless broadband signal can be resolved, the measurement error of the signal characteristic measurement value is caused, which seriously affects the accuracy of the final positioning result. Based on this, the embodiment can perform multiple measurements and select one of the measurements with the smallest measurement result as the signal feature measurement value.
请继续参阅图1所示，以获取TOA为例，两个第二天线和第一天线一样，均为可重构天线，eNB1的第一天线、eNB2的第二天线以及eNB3的第二天线周期性地改变各自的波束方向，在每一次改变波束方向时，获取下行信号到达UE 12的时间，最终获取多个周期测量到的时间，选取其中最小的一个作为TOA。在此过程中，对于每一测量周期，第一天线和两个第二天线均同时多次向UE 12发射下行信号，当然每一次发射下行信号时这三个天线也可以改变各自的波束方向，然后获取每一次下行信号到达UE 12的时间，最终获取多次发射所测量到的时间，选取时间最小的一个作为该周期测量到的时间。For example, as shown in FIG. 1 , the TOA is taken as an example. The two second antennas are the same as the first antenna, and are all reconfigurable antennas, the first antenna of eNB1, the second antenna of eNB2, and the second antenna period of eNB3. The respective beam directions are changed, and each time the beam direction is changed, the time when the downlink signal arrives at the UE 12 is acquired, and finally the time measured by the plurality of periods is acquired, and the smallest one is selected as the TOA. In this process, for each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 multiple times. Of course, each of the three antennas can also change the respective beam directions when transmitting the downlink signals. Then, the time when each downlink signal arrives at the UE 12 is obtained, and finally the time measured by the multiple transmissions is acquired, and the one with the smallest time is selected as the time measured in the period.
TDOA和TOA的获取原理及过程相似，即，在多个测量周期内第一天线和两个第二天线均同时向UE 12发射下行信号，在每一测量周期内三个天线均改变各自的波束方向，然后获取各个测量周期内下行信号到达UE的时间差，并选取时间最小的一个作为TDOA。同理，本实施例获取每一测量周期的时间差的原理及过程为：在每一测量周期内，第一天线和两个第二天线均同时多次向UE 12发射下行信号，其中每一次发射下行信号时这三个天线也可以改变各自的波束方向，然后获取每一次下行信号到达UE 12的时间，最终获取多次发射所测量到的时间差，选取时间最小的一个作为该周期测量到的时间差。The acquisition principle and process of TDOA and TOA are similar, that is, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 in multiple measurement periods, and the three antennas change their respective beams in each measurement period. Direction, then obtain the time difference of the downlink signal arriving at the UE in each measurement period, and select the one with the smallest time as the TDOA. Similarly, the principle and process of obtaining the time difference of each measurement period in this embodiment is: in each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE 12 multiple times, wherein each transmission When the downlink signal is used, the three antennas can also change the respective beam directions, and then acquire the time when each downlink signal arrives at the UE 12, and finally obtain the time difference measured by multiple transmissions, and select the one with the smallest time as the time difference measured in the period. .
考虑到空间信道的互易性，在TOA/TDOA的测量过程中，本实施例可以通过UE 12向三个基站的天线发射上行信号，并获取上行信号到各个基站的时间或时间差作为信号特征测量值。Considering the reciprocity of the spatial channel, in the measurement process of the TOA/TDOA, the embodiment can transmit the uplink signal to the antennas of the three base stations through the UE 12, and acquire the time or time difference of the uplink signal to each base station as the signal feature measurement. value.
S24：根据第二入射角和时间或时间差定位UE的位置。S24: Positioning the UE according to the second incident angle and the time or time difference.
上述S21和S22得到的第二入射角可视为AOA定位技术的信号特征测量值，S23得到的时间或时间差可视为TOA/TDOA定位技术的信号特征测量值，本实施例将这两种定位技术的信号特征测量值加以组合进行定位，形成了混合定位技术。该混合定位技术充分利用信号特征测量值，例如基站（例如eNB1）可以根据时间或时间差测出UE到基站的距离，同基站根据上行信号提供的辅助信息—UE 12到基站的入射角度来缩短定位时间，避免单一定位技术的缺点，从而提高定位精度。The second incident angle obtained by the above S21 and S22 can be regarded as the signal characteristic measurement value of the AOA positioning technology, and the time or time difference obtained by S23 can be regarded as the signal characteristic measurement value of the TOA/TDOA positioning technology, and the two embodiments are used in this embodiment. The signal characteristic measurements of the technology are combined and positioned to form a hybrid positioning technique. The hybrid positioning technology makes full use of the signal feature measurement value. For example, the base station (for example, eNB1) can measure the distance from the UE to the base station according to the time or time difference, and the base station shortens the positioning according to the auxiliary information provided by the uplink signal, the incident angle of the UE 12 to the base station. Time, to avoid the shortcomings of single positioning technology, thereby improving positioning accuracy.
例如，在得到第一天线到UE的第二入射角之后，还可以通过UE同时向位于不同位置的所述第一天线和两个第二天线发射上行信号，并获取所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差，再根据所述第二入射角与所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差定位所述UE的位置。For example, after obtaining the second incident angle of the first antenna to the UE, the UE may simultaneously transmit an uplink signal to the first antenna and the two second antennas located at different positions, and acquire the uplink signals respectively. Determining a time or time difference between the first antenna and the two second antennas, and then positioning the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively position.
图5是本申请一实施例的基于可重构天线的定位系统的结构示意图。如图5所示，该定位系统50包括处理器51、以及与处理器51连接且位于不同位置的一个第一天线521和两个第二天线522。这三个天线可以分别设置于不同位置的三个基站（例如eNB1、eNB2以及eNB3）上。其中，处理器51可以为任一个基站的基带处理器。FIG. 5 is a schematic structural diagram of a reconfigurable antenna-based positioning system according to an embodiment of the present application. As shown in FIG. 5, the positioning system 50 includes a processor 51, and a first antenna 521 and two second antennas 522 that are coupled to the processor 51 and are located at different locations. The three antennas can be respectively disposed on three base stations (e.g., eNB1, eNB2, and eNB3) at different locations. The processor 51 can be a baseband processor of any one of the base stations.
第一天线521用于向周围发射多个第一波束，例如4个第一波束，并通过多个第一波束扫描UE发射的上行信号。处理器51用于根据多个第一波束得到第一天线521到UE的第一入射角。The first antenna 521 is configured to transmit a plurality of first beams, for example, four first beams, to the surroundings, and scan the uplink signals transmitted by the UE by using the plurality of first beams. The processor 51 is configured to obtain a first incident angle of the first antenna 521 to the UE according to the plurality of first beams.
例如，第一天线521用于根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号。处理器51用于根据多个不同方向的第一波束得到第一天线521到UE的第一入射角。For example, the first antenna 521 is configured to transmit a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scan the uplink signals transmitted by the UE by using the first beams in the multiple different directions. The processor 51 is configured to obtain a first incident angle of the first antenna 521 to the UE according to the first beam in multiple different directions.
第一天线521还用于向周围发射多个第二波束，例如12个第二波束，每一第二波束小于每一第一波束的扫描角度，通过第二波束在第一入射角内扫描UE发射的上行信号。处理器51用于根据多个第二波束得到第二天线522到UE的第二入射角。The first antenna 521 is further configured to transmit a plurality of second beams, for example, 12 second beams, each of which is smaller than a scanning angle of each first beam, and scans the UE in the first incident angle by using the second beam. The uplink signal transmitted. The processor 51 is configured to obtain a second incident angle of the second antenna 522 to the UE according to the plurality of second beams.
第一天线521还用于和两个第二天线522同时向UE发射下行信号。处理器51用于得到下行信号到达UE的时间或时间差。The first antenna 521 is also configured to simultaneously transmit downlink signals to the UE with the two second antennas 522. The processor 51 is configured to obtain a time or time difference of the downlink signal arriving at the UE.
处理器51还用于根据第二入射角和时间或时间差定位UE的位置。The processor 51 is further configured to locate the location of the UE based on the second angle of incidence and the time or time difference.
鉴于基站与UE之间的距离越小，LOS路径存在的概率越大，则入射角的测量误差越小，本实施例可以采用距离UE最近的基站（天线）发射第一波束和第二波束，由此可知，第一天线521与UE之间的距离小于任一个第二天线522与UE之间的距离。In view of the smaller the distance between the base station and the UE, the greater the probability that the LOS path exists, the smaller the measurement error of the incident angle is. In this embodiment, the first beam and the second beam are transmitted by the base station (antenna) closest to the UE. It can be seen that the distance between the first antenna 521 and the UE is smaller than the distance between any one of the second antennas 522 and the UE.
在室内等障碍物较多的无线通信环境中，障碍物对信号的反射及散射使得信号传输存在较多路径，通常情况下，首达路径作为基站和UE之间的直射路径，因此，本实施例可以检测下行信号在各个基站与UE之间的首达路径的传输时间作为TOA定位技术的信号特征测量值。基于此，本实施例可以进行多次测量，并选取其中测量结果最小的一个作为信号特征测量值。具体地，两个第二天线522和第一天线521一样，均为可重构天线，在多个测量周期内第一天线521和两个第二天线522均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向，处理器51获取各个测量周期内下行信号到达UE的时间或时间差，并选取时间最小的一个作为下行信号到达UE的时间或时间差。In a wireless communication environment with many obstacles, such as indoors, the reflection and scattering of the obstacle by the obstacle causes more paths for signal transmission. Generally, the first path acts as a direct path between the base station and the UE. Therefore, the present implementation For example, the transmission time of the first path of the downlink signal between each base station and the UE can be detected as a signal characteristic measurement value of the TOA positioning technology. Based on this, the embodiment can perform multiple measurements and select one of the measurements with the smallest measurement result as the signal feature measurement value. Specifically, the two second antennas 522 are the same as the first antenna 521, and are both reconfigurable antennas. The first antenna 521 and the two second antennas 522 simultaneously transmit downlink signals to the UE in multiple measurement periods, and The respective beam directions are changed in each measurement period, and the processor 51 acquires the time or time difference of the downlink signal reaching the UE in each measurement period, and selects the one with the smallest time as the time or time difference of the downlink signal to the UE.
在此过程中，在每一测量周期内，第一天线521和两个第二天线522均同时多次向UE发射下行信号，处理器51获取每一次下行信号到达UE的时间或时间差，并选取时间最小的一个作为下行信号到达UE的时间或时间差。In this process, in each measurement period, the first antenna 521 and the two second antennas 522 simultaneously transmit downlink signals to the UE multiple times, and the processor 51 acquires the time or time difference of each downlink signal arriving at the UE, and selects The smallest time is the time or time difference that the downlink signal arrives at the UE.
本实施例的定位系统50的上述结构元件对应执行上述实施例的基于可重构天线的定位方法，具有与其相同的技术效果。The above-described structural elements of the positioning system 50 of the present embodiment correspond to the reconfigurable antenna-based positioning method of the above-described embodiments, and have the same technical effects.
应理解，以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。It should be understood that the above description is only an embodiment of the present application, and thus does not limit the scope of patents of the present application, and the equivalent structure or equivalent flow transformation made by the content of the specification and the drawings of the present application, for example, the technology between the embodiments The combination of features, or directly or indirectly, in other related technical fields is included in the scope of patent protection of the present application.

Claims (20)

  1. 一种基于可重构天线的定位方法，其包括： A positioning method based on a reconfigurable antenna, comprising:
    第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，所述第一天线为可重构天线，所述第一天线用于通过单个射频链路形成波束方向在0°至360°范围内的方向性波束；The first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by using the plurality of first beams to obtain a first incident angle of the first antenna to the UE, where the first antenna is a reconfigurable antenna The first antenna is configured to form a directional beam with a beam direction in a range of 0° to 360° through a single radio frequency link;
    所述第一天线向周围发射多个第二波束，每一所述第二波束小于每一所述第一波束的扫描角度，通过所述第二波束在所述第一入射角内扫描UE发射的上行信号，得到第一天线到UE的第二入射角；Transmitting, by the first antenna, a plurality of second beams, each of the second beams being smaller than a scanning angle of each of the first beams, and scanning, by using the second beam, the UE to transmit in the first incident angle The uplink signal, obtaining a second incident angle of the first antenna to the UE;
    位于不同位置的所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差；The first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE;
    根据所述第二入射角和所述时间或时间差定位所述UE的位置。Positioning the UE based on the second angle of incidence and the time or time difference.
  2. 根据权利要求1所述的方法，其中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。 The method of claim 1, wherein a distance between the first antenna and the UE is less than a distance between the second antenna and the UE.
  3. 根据权利要求1所述的方法，其中，所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差，包括： The method according to claim 1, wherein the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE, including:
    在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向；The first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
    获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that the downlink signal arrives at the UE in each measurement period, and selecting the one with the smallest time as the time or time difference of the downlink signal reaching the UE.
  4. 根据权利要求3所述的方法，其中，获取各个测量周期内下行信号到达所述UE的时间或时间差，包括： The method according to claim 3, wherein acquiring a time or time difference in which the downlink signal arrives at the UE in each measurement period comprises:
    在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号；During each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
    获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that each downlink signal arrives at the UE, and selecting the one with the smallest time as the time or time difference that the downlink signal arrives at the UE.
  5. 根据权利要求1所述的方法，其中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。 The method of claim 1 wherein said first antenna transmits four of said first beams and twelve of said second beams.
  6. 根据权利要求1所述的方法，其中，所述第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，包括： The method according to claim 1, wherein the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by the plurality of first beams to obtain a first antenna to the UE. Angle of incidence, including:
    所述第一天线根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。The first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
  7. 根据权利要求1所述的方法，其中，在所述得到第一天线到UE的第二入射角之后，还包括： The method according to claim 1, wherein after the obtaining the second incident angle of the first antenna to the UE, the method further comprises:
    UE同时向位于不同位置的所述第一天线和两个第二天线发射上行信号，并获取所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差；The UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
    根据所述第二入射角与所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差定位所述UE的位置。And locating the location of the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively.
  8. 一种基于可重构天线的定位方法，其包括： A positioning method based on a reconfigurable antenna, comprising:
    第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角；Transmitting, by the first antenna, a plurality of first beams to the surroundings, and scanning the uplink signals transmitted by the UE by using the plurality of first beams to obtain a first incident angle of the first antenna to the UE;
    所述第一天线向周围发射多个第二波束，每一所述第二波束小于每一所述第一波束的扫描角度，通过所述第二波束在所述第一入射角内扫描UE发射的上行信号，得到第一天线到UE的第二入射角；Transmitting, by the first antenna, a plurality of second beams, each of the second beams being smaller than a scanning angle of each of the first beams, and scanning, by using the second beam, the UE to transmit in the first incident angle The uplink signal, obtaining a second incident angle of the first antenna to the UE;
    位于不同位置的所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差；The first antenna and the two second antennas located at different locations simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE;
    根据所述第二入射角和所述时间或时间差定位所述UE的位置。Positioning the UE based on the second angle of incidence and the time or time difference.
  9. 根据权利要求8所述的方法，其中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。 The method of claim 8, wherein a distance between the first antenna and the UE is less than a distance between the second antenna and the UE.
  10. 根据权利要求8所述的方法，其中，所述第一天线和两个第二天线同时向UE发射下行信号，并得到所述下行信号到达所述UE的时间或时间差，包括： The method according to claim 8, wherein the first antenna and the two second antennas simultaneously transmit a downlink signal to the UE, and obtain a time or time difference that the downlink signal arrives at the UE, including:
    在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向；The first antenna and the two second antennas simultaneously transmit downlink signals to the UE during multiple measurement periods, and change respective beam directions in each measurement period;
    获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that the downlink signal arrives at the UE in each measurement period, and selecting the one with the smallest time as the time or time difference of the downlink signal reaching the UE.
  11. 根据权利要求10所述的方法，其中，获取各个测量周期内下行信号到达所述UE的时间或时间差，包括： The method according to claim 10, wherein acquiring a time or time difference of a downlink signal reaching the UE in each measurement period comprises:
    在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号；During each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times;
    获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。Obtaining a time or time difference that each downlink signal arrives at the UE, and selecting the one with the smallest time as the time or time difference that the downlink signal arrives at the UE.
  12. 根据权利要求8所述的方法，其中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。 The method of claim 8 wherein said first antenna transmits four of said first beams and twelve of said second beams.
  13. 根据权利要求8所述的方法，其中，所述第一天线向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角，包括： The method according to claim 8, wherein the first antenna transmits a plurality of first beams to the surroundings, and scans the uplink signals transmitted by the UE by the plurality of first beams to obtain a first antenna to the UE. Angle of incidence, including:
    所述第一天线根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号，得到第一天线到UE的第一入射角。The first antenna transmits a plurality of first beams in different directions to the surroundings according to a preset software algorithm, and scans the uplink signals sent by the UE by using the first beams in the multiple different directions to obtain the first antenna to the UE. Angle of incidence.
  14. 根据权利要求8所述的方法，其中，在所述得到第一天线到UE的第二入射角之后，还包括： The method according to claim 8, wherein after the obtaining the second incident angle of the first antenna to the UE, the method further comprises:
    UE同时向位于不同位置的所述第一天线和两个第二天线发射上行信号，并获取所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差；The UE simultaneously transmits an uplink signal to the first antenna and the two second antennas located at different locations, and acquires a time or time difference between the uplink signal and the first antenna and the two second antennas respectively;
    根据所述第二入射角与所述上行信号分别到达所述第一天线和两个第二天线的时间或时间差定位所述UE的位置。And locating the location of the UE according to the second incident angle and a time or time difference between the uplink signal and the first antenna and the two second antennas respectively.
  15. 一种基于可重构天线的定位系统，其包括处理器、以及与所述处理器连接且位于不同位置的一个第一天线和两个第二天线， A positioning system based on a reconfigurable antenna, comprising a processor, and a first antenna and two second antennas connected to the processor and located at different positions,
    所述第一天线用于向周围发射多个第一波束，并通过所述多个第一波束扫描UE发射的上行信号；The first antenna is configured to transmit a plurality of first beams to the surroundings, and scan the uplink signals transmitted by the UE by using the multiple first beams;
    所述处理器用于根据所述多个第一波束得到所述第一天线到所述UE的第一入射角；The processor is configured to obtain a first incident angle of the first antenna to the UE according to the multiple first beams;
    所述第一天线还用于向周围发射多个第二波束，每一所述第二波束小于每一所述第一波束的扫描角度，通过所述第二波束在所述第一入射角内扫描UE发射的上行信号；The first antenna is further configured to transmit a plurality of second beams to the surroundings, each of the second beams being smaller than a scanning angle of each of the first beams, and the second beam is within the first incident angle Scanning the uplink signal transmitted by the UE;
    所述处理器用于根据所述多个第二波束得到所述第二天线到所述UE的第二入射角；The processor is configured to obtain a second incident angle of the second antenna to the UE according to the multiple second beams;
    所述第一天线还用于和两个第二天线同时向UE发射下行信号；The first antenna is further configured to simultaneously transmit a downlink signal to the UE with the two second antennas;
    所述处理器还用于得到所述下行信号到达UE的时间或时间差；The processor is further configured to obtain a time or time difference that the downlink signal arrives at the UE;
    所述处理器进一步用于根据所述第二入射角和所述时间或时间差定位所述UE的位置。The processor is further configured to locate a location of the UE based on the second angle of incidence and the time or time difference.
  16. 根据权利要求15所述的定位系统，其中，所述第一天线与所述UE之间的距离小于所述第二天线与所述UE之间的距离。 The positioning system of claim 15, wherein a distance between the first antenna and the UE is less than a distance between the second antenna and the UE.
  17. 根据权利要求15所述的定位系统，其中，在多个测量周期内所述第一天线和两个第二天线均同时向UE发射下行信号，且在每一测量周期内均改变各自的波束方向，所述处理器获取各个测量周期内下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。 The positioning system according to claim 15, wherein the first antenna and the two second antennas simultaneously transmit downlink signals to the UE during a plurality of measurement periods, and change respective beam directions in each measurement period. And the processor acquires a time or time difference that the downlink signal arrives at the UE in each measurement period, and selects the one with the smallest time as the time or time difference that the downlink signal arrives at the UE.
  18. 根据权利要求17所述的定位系统，其中，在每一测量周期内，所述第一天线和两个第二天线均同时多次向UE发射下行信号，所述处理器获取每一次下行信号到达所述UE的时间或时间差，并选取时间最小的一个作为所述下行信号到达所述UE的时间或时间差。 The positioning system according to claim 17, wherein, in each measurement period, the first antenna and the two second antennas simultaneously transmit downlink signals to the UE multiple times, and the processor acquires each downlink signal arrival The time or time difference of the UE, and selecting the one with the smallest time as the time or time difference of the downlink signal to the UE.
  19. 根据权利要求15所述的定位系统，其中，所述第一天线发射四个所述第一波束，以及十二个所述第二波束。 The positioning system of claim 15 wherein said first antenna transmits four of said first beams and twelve of said second beams.
  20. 根据权利要求15所述的定位系统，其中，所述第一天线用于根据预设软件算法向周围发射多个不同方向的第一波束，并通过所述多个不同方向的第一波束扫描UE发射的上行信号； The positioning system according to claim 15, wherein the first antenna is configured to transmit a plurality of first beams of different directions to the surroundings according to a preset software algorithm, and scan the UE by the first beams of the plurality of different directions The uplink signal transmitted;
    所述处理器用于根据所述多个不同方向的第一波束得到所述第一天线到所述UE的第一入射角。The processor is configured to obtain a first incident angle of the first antenna to the UE according to the first beam of the multiple different directions.
PCT/CN2018/115677 2017-11-16 2018-11-15 Reconfigurable antenna-based positioning method and system WO2019096211A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711141181.XA CN108169710A (en) 2017-11-16 2017-11-16 Localization method and alignment system based on reconfigurable antenna
CN201711141181.X 2017-11-16

Publications (1)

Publication Number Publication Date
WO2019096211A1 true WO2019096211A1 (en) 2019-05-23

Family

ID=62527446

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/115677 WO2019096211A1 (en) 2017-11-16 2018-11-15 Reconfigurable antenna-based positioning method and system

Country Status (2)

Country Link
CN (1) CN108169710A (en)
WO (1) WO2019096211A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169710A (en) * 2017-11-16 2018-06-15 捷开通讯(深圳)有限公司 Localization method and alignment system based on reconfigurable antenna
CN110944382B (en) * 2018-09-25 2021-03-09 北京紫光展锐通信技术有限公司 Positioning method of user terminal, base station and computer readable storage medium
CN110958685B (en) 2018-09-26 2022-09-09 华为技术有限公司 Positioning method and device
CN111163480A (en) 2018-11-07 2020-05-15 索尼公司 Electronic device, wireless communication method, and computer-readable medium
CN111385820A (en) * 2018-12-29 2020-07-07 深圳Tcl新技术有限公司 Wifi radio frequency direction optimization method and device and readable storage medium
CN111698008B (en) * 2019-03-15 2022-02-11 华为技术有限公司 Method and device for generating beam
CN116233863B (en) * 2023-05-04 2023-07-25 中国电信股份有限公司浙江分公司 Base station deployment method and device for high-precision positioning terminal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6191738B1 (en) * 1999-09-30 2001-02-20 Motorola, Inc. Method and apparatus for locating a remote unit within a communication system
CN1535048A (en) * 2003-03-31 2004-10-06 大唐移动通信设备有限公司 Method of estimating space reaching direction of fixed wave beam
CN101848414A (en) * 2009-03-24 2010-09-29 大唐移动通信设备有限公司 Method for determining signal transmission time delay and method for positioning mobile station
CN102149192A (en) * 2011-01-25 2011-08-10 南京信息工程大学 Cellular network wireless positioning method based on cooperation of mobile stations
CN105979579A (en) * 2016-05-19 2016-09-28 华东交通大学 Application of TOA/AOA mixed positioning method in LTE system
CN108169710A (en) * 2017-11-16 2018-06-15 捷开通讯(深圳)有限公司 Localization method and alignment system based on reconfigurable antenna

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1280493C (en) * 1986-06-10 1991-02-19 Anthony R. Cusdin Radio direction-finding using time of arrival measurements
RU2248668C2 (en) * 2002-11-15 2005-03-20 Корпорация "Самсунг Электроникс" Method for detecting mutual time mismatch of base station signals in cellular radio communication system
CN101087470A (en) * 2006-06-09 2007-12-12 大唐移动通信设备有限公司 A mobile station positioning system and its positioning method
JP4709117B2 (en) * 2006-10-06 2011-06-22 三菱電機株式会社 Radar device and angle measuring device
JP2008219571A (en) * 2007-03-06 2008-09-18 Mitsubishi Electric Corp Multipath suppressor and multipath supression method
JP4623027B2 (en) * 2007-03-06 2011-02-02 三菱電機株式会社 Ranging device, positioning device, ranging method and positioning method
US8373608B2 (en) * 2007-12-05 2013-02-12 Honeywell International Inc. Reconfigurable antenna pattern verification
US20090146894A1 (en) * 2007-12-05 2009-06-11 Honeywell International Inc. Reconfigurable antenna steering patterns
CN102045838B (en) * 2009-10-14 2013-06-12 电信科学技术研究院 Method and equipment for measurement positioning by observing arrival time difference
EP2568529B1 (en) * 2011-09-08 2014-11-26 BlackBerry Limited Mobile device having reconfigurable antenna and associated methods
CN105451327B (en) * 2014-08-18 2018-11-20 北大方正集团有限公司 The suppressing method and terminal of self-interference positioning signal
CN105375963A (en) * 2014-08-27 2016-03-02 上海贝尔股份有限公司 Radiation diagram configurable antenna for micro cell base station
CN106850009B (en) * 2015-11-30 2021-02-09 华为技术有限公司 Method for determining communication beam and corresponding device
CN105655717B (en) * 2015-12-25 2018-11-06 宇龙计算机通信科技(深圳)有限公司 A kind of directional diagram reconstructable aerial and mobile terminal
CN106549213A (en) * 2016-10-26 2017-03-29 捷开通讯(深圳)有限公司 A kind of reconfigurable antenna device suitable for three-stage metal back cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6191738B1 (en) * 1999-09-30 2001-02-20 Motorola, Inc. Method and apparatus for locating a remote unit within a communication system
CN1535048A (en) * 2003-03-31 2004-10-06 大唐移动通信设备有限公司 Method of estimating space reaching direction of fixed wave beam
CN101848414A (en) * 2009-03-24 2010-09-29 大唐移动通信设备有限公司 Method for determining signal transmission time delay and method for positioning mobile station
CN102149192A (en) * 2011-01-25 2011-08-10 南京信息工程大学 Cellular network wireless positioning method based on cooperation of mobile stations
CN105979579A (en) * 2016-05-19 2016-09-28 华东交通大学 Application of TOA/AOA mixed positioning method in LTE system
CN108169710A (en) * 2017-11-16 2018-06-15 捷开通讯(深圳)有限公司 Localization method and alignment system based on reconfigurable antenna

Also Published As

Publication number Publication date
CN108169710A (en) 2018-06-15

Similar Documents

Publication Publication Date Title
WO2019096211A1 (en) Reconfigurable antenna-based positioning method and system
KR102334974B1 (en) Localization of user equipment in mobile communication networks
ES2892300T3 (en) Location of user equipment in a mobile communication network based on delays and path strengths
CN109155984B (en) Method for determining channel time delay, positioning method and related equipment
US12057918B2 (en) Non-line-of-sight path detection for user equipment positioning in wireless networks
US9838845B2 (en) Method and apparatus for positioning user equipment
US20200142025A1 (en) Observed time difference of arrival angle of arrival discriminator
EP3215864B1 (en) Determining the geographic location of a portable electronic device with a synthetic antenna array
WO2020073644A1 (en) Method and device for user equipment positioning
KR20160105891A (en) Access point location discovery in unmanaged networks
US11510172B1 (en) Device detection and locationing within a wireless network
TW201735446A (en) Autonomous antenna aligning system and method
Kumar et al. Phase-based angle estimation approach in indoor localization system using Bluetooth low energy
KR101352361B1 (en) Method and mobile radio terminal device to determine position within mobile radio networks by means of direction finding
EP4229433A2 (en) Determining a position of an entity of a wireless communication network
EP4193160A1 (en) Positioning enhancement for precoded signals with dynamic context information
US20240183974A1 (en) Mapping of Scatterer Locations in a Radio Environment
Chen et al. A beamforming method based on image tracking and positioning in the LOS scenario
US12052677B2 (en) Apparatus and method for time synchronization
WO2024199623A1 (en) Devices and methods for localization of a wi-fi station
Lam et al. CoWiPS: Cooperative Wireless Positioning to Identify Position Mis-reports in Vehicular Scenarios
EP4441909A1 (en) Relative orientation with ultra-fine precision

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18879590

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18879590

Country of ref document: EP

Kind code of ref document: A1