AU2020101369A4 - Method and device for indoor positioning of mobile terminal - Google Patents

Method and device for indoor positioning of mobile terminal Download PDF

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Publication number
AU2020101369A4
AU2020101369A4 AU2020101369A AU2020101369A AU2020101369A4 AU 2020101369 A4 AU2020101369 A4 AU 2020101369A4 AU 2020101369 A AU2020101369 A AU 2020101369A AU 2020101369 A AU2020101369 A AU 2020101369A AU 2020101369 A4 AU2020101369 A4 AU 2020101369A4
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AU
Australia
Prior art keywords
mobile terminal
wifi signal
location information
hotspots
signal hotspots
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AU2020101369A
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Yehemin Gao
Yuebin Li
Jiazhu Zheng
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Nanjing Forestry University
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Nanjing Forestry University
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Priority to AU2020101369A priority Critical patent/AU2020101369A4/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
    • 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
    • G01S5/0205—Details
    • G01S5/021—Calibration, monitoring or correction
    • 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
    • G01S5/0205—Details
    • G01S5/0242—Determining the position of transmitters to be subsequently used in positioning
    • 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
    • G01S5/0295—Proximity-based methods, e.g. position inferred from reception of particular signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

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

Abstract

The present invention provides a method and device for indoor positioning of a mobile terminal. A plurality of WIFI signal hotspots are provided indoors. The method comprises: 1) 5 obtaining the location information of a plurality of WIFI signal hotspots; 2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value; 3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots. 10 DRAWINGS start S100 the location information of a plurality of WIFI signal hotspots is obtained. S200 the respective distances between the mobile terminal and the WIFI signal hotspots are calculated based on the RSSI value. S300 the location information of the mobile terminal is calculated based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots. end FIG. 1

Description

DRAWINGS
start
S100 the location information of a plurality of WIFI signal hotspots is obtained.
S200 the respective distances between the mobile terminal and the WIFI signal hotspots are calculated based on the RSSI value.
S300 the location information of the mobile terminal is calculated based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.
end
FIG. 1
METHOD AND DEVICE FOR INDOOR POSITIONING OF MOBILE TERMINAL TECHNICAL FIELD
[0001] The present invention relates to the technical field of signal and information processing, and to a method and a device for indoor positioning of a mobile terminal.
BACKGROUND
[0002] In the ZigBee indoor positioning technology, other positioning networks needs to be laid according to environmental requirements, a considerable amount of devices are required, and the cost is relatively high. Bluetooth indoor positioning technology achieves accurate positioning in indoor environments by measuring the signal strength, which is not easily affected by obstacles. Due to the relatively high cost of Bluetooth devices and the large number of devices required to achieve accurate positioning, the indoor positioning technology is suitable for a specific environment and cannot be fully popularized. The ultra wide band technology completely gets rid of the traditional method using carrier modulation, and is susceptible to interference from other narrow-band wireless communication signals, which will bring great errors to positioning. In the infrared indoor positioning technology, many devices such as optical sensors need to be installed, and the cost is relatively high, so that the infrared indoor positioning technology is suitable for a relatively simple and fixed indoor environment. Since the ultrasonic indoor positioning technology is also greatly affected by environmental factors, errors are prone to occur. At the same time, the hardware requirements are also very high, so that the cost is relatively high.
[0003] On the other hand, WIFI signals have been widely used at present, and WIFI signal hotspots (also referred to as APs) have been laid indoors in streets and large structures. Therefore, indoor positioning of WIFI has been implemented to meet the needs of people to determine their location, which is of great significance on realizing the construction of smart cities.
SUMMARY
[0004] A method for indoor positioning of a mobile terminal, wherein a plurality of WIFI signal hotspots are provided indoors, wherein the method comprises the steps of:
[0005] 1) obtaining the location information of a plurality of WIFI signal hotspots;
[0006] 2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
[0007] 3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG.1 is a flowchart of a method for indoor positioning of a mobile terminal according to an embodiment of the present invention.
[0009] FIG. 2 is a flowchart of a method for indoor positioning of a mobile terminal according to another embodiment of the present invention.
[0010] FIG. 3 is a block diagram of a device for indoor positioning of a mobile terminal according to an embodiment of the present invention.
[0011] FIG. 4 is a block diagram of a device for indoor positioning of a mobile terminal according to another embodiment of the present invention.
[0012] FIG. 5 is a block diagram of an apparatus for indoor positioning of a mobile terminal according to an embodiment of the present invention.
DESCRIPTION OF THE EMBODIMENTS
[0013] As shown in FIG. 1, a method for indoor positioning of a mobile terminal according to an embodiment of the present invention is provided, wherein a plurality of WIFI signal hotspots are provided indoors, wherein the method comprises: obtaining the location information of a plurality of WIFI signal hotspots (SOO); calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value (S200); calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots (S300).
[0014] In S100, the location information of a plurality of WIFI signal hotspots is obtained. Here, "obtaining the location information of a plurality of WIFI signal hotspots" may be the address of the WIFI signal hotspots received by the mobile terminal through the positioning station, or the location information of the WIFI signal hotspots obtained by the mobile terminal through the following method.
[0015] As shown in FIG. 2, the plurality of WIFI signal hotspots comprise WIFI signal hotspots located in an indoor boundary area and WIFI signal hotspots located in an indoor interior area, wherein obtaining the location information of the plurality of WIFI signal hotspots comprises the following steps.
[0016] S110: the location information of the WIFI signal hotspots located in the indoor boundary area is obtained
[0017] comprising:
[0018] Sll: receiving, by the mobile terminal located outside the indoor boundary area, GPS signals to obtain the location information of the current location of the mobile terminal;
[0019] S112: receiving, by the mobile terminal, the signal of the WIFI signal hotspots located in the indoor boundary area, and calculating the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area based on the RSSI value;
[0020] S113: calculating the location information of the WIFI signal hotspots located in the indoor boundary area based on the location information of the current location of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots.
[0021] S120: the calibrated location information of the WIFI signal hotspots located in the indoor boundary area is used to calculate the location information of the WIFI signal hotspots that have not obtained the location information during the movement of the mobile terminal
[0022] comprising:
[0023] S121: after the mobile terminal enters the indoor interior area, simultaneously receiving the signal of the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the signal of the WIFI signal hotspots that have not obtained the location information, so as to obtain the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information;
[0024] S122: calibrating the current location of the mobile terminal based on the WIFI signal hotspots located in the indoor boundary area that have obtained the location information, so as to obtain the current location information of the mobile terminal;
[0025] S123: calculating the location information of the WIFI signal hotspots that has not been calibrated based on the current location information of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information.
[0026] As shown in FIG 3, a device for indoor positioning of a mobile terminal is provided,
[0027] comprising:
[0028] an obtaining module 210, which is configured to obtain the location information of a plurality of WIFI signal hotspots;
[0029] a distance calculating module 220, which is configured to calculate the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
[0030] a positioning module 230, which is configured to calculate the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.
[0031] As shown in FIG. 4, the plurality of WIFI signal hotspots comprise WIFI signal hotspots located in the indoor boundary area and WIFI signal hotspots located in the indoor interior area, wherein the obtaining module 210 comprises:
[0032] a first obtaining sub-module 211, which is configured to obtain the location information of the WIFI signal hotspots located in the indoor boundary area;
[0033] a second obtaining sub-module 212, which is configured to use the calibrated location information of the WIFI signal hotspots located in the indoor boundary area to calculate the location information of the WIFI signal hotspots that have not obtained the location information during the movement of the mobile terminal.
[0034] The first obtaining sub-module 211 comprises:
[0035] a first distance calculating sub-module 2112, which is configured to calculate the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area based on the RSSI value;
[0036] a first location information calculating module 2113, which is configured to calculate the location information of the WIFI signal hotspots located in the indoor boundary area based on the location information of the current location of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots.
[0037] The second obtaining sub-module 212 comprises:
[0038] a second distance calculating sub-module 2121, which is configured to, after the mobile terminal enters the indoor interior area, calculate the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information based on the signal of the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the signal of the WIFI signal hotspots that have not obtained the location information, which have been received by the mobile terminal,
[0039] a first positioning sub-module 2122, which is configured to calibrate the current location of the mobile terminal based on the WIFI signal hotspots located in the indoor boundary area that have obtained the location information, so as to obtain the current location information of the mobile terminal;
[0040] a second location information calculating module 2123, which is configured to calculate the location information of the WIFI signal hotspots that has not been calibrated based on the current location information of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information.
[0041] The modules described above maybe configured by the Central Processing Unit (CPU) of the positioning device 200. Alternatively, each module may also be configured by a dedicated processing unit of the positioning device 200.
[0042] As shown in FIG. 5, according to the present invention, an apparatus 30 for indoor positioning of a mobile terminal is further provided, comprising:
[0043] a memory 34, in which computer program instructions are stored;
[0044] a processor 32, which is configured to execute the computer program instructions to perform the following operations:
[0045] 1) obtaining the location information of a plurality of WIFI signal hotspots;
[0046] 2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
[0047] 3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.

Claims (5)

Claims WHAT IS CLAIMED IS:
1. A method for indoor positioning of a mobile terminal, wherein a plurality of WIFI signal hotspots are provided indoors, wherein the method comprises:
1) obtaining the location information of a plurality of WIFI signal hotspots;
2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.
2. The method according to claim 1, wherein the plurality of WIFI signal hotspots comprise WIFI signal hotspots located in an indoor boundary area and WIFI signal hotspots located in an indoor interior area, wherein obtaining the location information of the plurality of WIFI signal hotspots comprises:
1-1) obtaining the location information of the WIFI signal hotspots located in the indoor boundary area;
1-2) using the calibrated location information of the WIFI signal hotspots located in the indoor boundary area to calculate the location information of the WIFI signal hotspots that have not obtained the location information during the movement of the mobile terminal.
3. The method according to claim 2, wherein obtaining the location information of WIFI signal hotspots located in the indoor boundary area comprises:
1-1-1) receiving, by the mobile terminal located outside the indoor boundary area, GPS signals to obtain the location information of the current location of the mobile terminal;
1-1-2) receiving, by the mobile terminal, the signal of the WIFI signal hotspots located in the indoor boundary area simultaneously, and calculating the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area based on the RSSI value;
1-1-3) calculating the location information of the WIFI signal hotspots located in the indoor boundary area based on the location information of the current location of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots.
4. The method according to claim 3, wherein using the calibrated location information of the WIFI signal hotspots located in the indoor boundary area to calculate the location information of the WIFI signal hotspots that have not obtained the location information during the movement of the mobile terminal comprises:
1-2-1) after the mobile terminal enters the indoor interior area, simultaneously receiving the signal of the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the signal of the WIFI signal hotspots that have not obtained the location information, so as to obtain the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information;
1-2-2) calibrating the current location of the mobile terminal based on the WIFI signal hotspots located in the indoor boundary area that have obtained the location information, so as to obtain the current location information of the mobile terminal;
1-2-3) calculating the location information of the WIFI signal hotspots that has not been calibrated based on the current location information of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information, and repeating the above steps during the movement of the mobile terminal until the location information of all WIFI signal hotspots is obtained.
5. A device for indoor positioning of a mobile terminal, comprising:
an obtaining module, which is configured to obtain the location information of a plurality of WIFI signal hotspots;
a distance calculating module, which is configured to calculate the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
a positioning module, which is configured to calculate the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots;
wherein the plurality of WIFI signal hotspots comprise WIFI signal hotspots located in the indoor boundary area and WIFI signal hotspots located in the indoor interior area, wherein the obtaining module comprises:
a first obtaining sub-module, which is configured to obtain the location information of the WIFI signal hotspots located in the indoor boundary area; a second obtaining sub-module, which is configured to use the calibrated location information of the WIFI signal hotspots located in the indoor boundary area to calculate the location information of the WIFI signal hotspots that have not obtained the location information during the movement of the mobile terminal; wherein the first obtaining sub-module comprises: a GPS module, which is configured to receive GPS signals when the mobile terminal is located outside the indoor boundary area to obtain the location information of the current location of the mobile terminal; a first distance calculating sub-module, which is configured to calculate the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area based on the RSSI value; a first location information calculating module, which is configured to calculate the location information of the WIFI signal hotspots located in the indoor boundary area based on the location information of the current location of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots; wherein the second obtaining sub-module comprises: a second distance calculating sub-module, which is configured to, after the mobile terminal enters the indoor interior area, calculate the distance between the current location of the mobile terminal and the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information based on the signal of the WIFI signal hotspots located in the indoor boundary area that have obtained the location information and the signal of the WIFI signal hotspots that have not obtained the location information, which have been received by the mobile terminal, a first positioning sub-module, which is configured to calibrate the current location of the mobile terminal based on the WIFI signal hotspots located in the indoor boundary area that have obtained the location information, so as to obtain the current location information of the mobile terminal; a second location information calculating module, which is configured to calculate the location information of the WIFI signal hotspots that has not been calibrated based on the current location information of the mobile terminal and the distance between the current location of the mobile terminal and the WIFI signal hotspots that have not obtained the location information; wherein the device for indoor positioning of a mobile terminal further comprises an apparatus for indoor positioning of a mobile terminal, comprising: a memory, in which computer program instructions are stored; a processor, which is configured to execute the computer program instructions to perform the following operations:
1) obtaining the location information of a plurality of WIFI signal hotspots;
2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots,
wherein the device for indoor positioning of a mobile terminal further comprises a storage medium in which computer program instructions are stored, wherein the computer program instructions are used for indoor positioning of the mobile terminal, and the computer program instructions perform the following operations when being executed:
1) obtaining the location information of a plurality of WIFI signal hotspots;
2) calculating the respective distances between the mobile terminal and the WIFI signal hotspots based on the RSSI value;
3) calculating the location information of the mobile terminal based on the location information of the plurality of WIFI signal hotspots and the respective distances between the mobile terminal and the plurality of WIFI signal hotspots.
AU2020101369A 2020-07-15 2020-07-15 Method and device for indoor positioning of mobile terminal Ceased AU2020101369A4 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112351385A (en) * 2020-10-26 2021-02-09 维沃移动通信有限公司 Positioning method and device and electronic equipment
CN114302337A (en) * 2021-12-31 2022-04-08 恒明星光智慧文化科技(深圳)有限公司 Indoor and outdoor space positioning lamp system and method
CN114501364A (en) * 2022-02-22 2022-05-13 成都市联洲国际技术有限公司 Indoor positioning method and device based on WIFI signal and electronic equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112351385A (en) * 2020-10-26 2021-02-09 维沃移动通信有限公司 Positioning method and device and electronic equipment
CN114302337A (en) * 2021-12-31 2022-04-08 恒明星光智慧文化科技(深圳)有限公司 Indoor and outdoor space positioning lamp system and method
CN114302337B (en) * 2021-12-31 2023-08-15 恒明星光智慧文化科技(深圳)有限公司 Indoor and outdoor space positioning lamp system and method
CN114501364A (en) * 2022-02-22 2022-05-13 成都市联洲国际技术有限公司 Indoor positioning method and device based on WIFI signal and electronic equipment
CN114501364B (en) * 2022-02-22 2023-12-22 成都市联洲国际技术有限公司 Indoor positioning method and device based on WIFI signals and electronic equipment

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