Assisted positioning beacon network with synchronous coordination communication

Abstract

The invention discloses an auxiliary positioning beacon network with synchronous coordination communication, which comprises a plurality of Bluetooth beacons, a server, a Bluetooth base station and a mobile terminal, and is characterized in that each Bluetooth beacon comprises a beacon processing module, a beacon signal transmission module and a Bluetooth transmitting module; the mobile terminal comprises a mobile processing module, a display screen, a Bluetooth receiving module and a Bluetooth signal transmission module. According to the auxiliary positioning beacon network with the synchronous coordination communication function, a plurality of Bluetooth beacons are connected with the server for sequencing and circularly sending signals, so that the Bluetooth receiving module of the mobile terminal can be prevented from being in an open state for a long time, and the power consumption of the mobile terminal is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning beacons, and in particular to an auxiliary positioning beacon network with synchronous coordinated communication. Background Art

[0002] A location beacon network is a network system that uses location beacons to determine location. A location beacon is a radio transmitter that provides location information in small indoor or outdoor spaces, supporting location-based service applications or systems. Location beacons are typically Bluetooth beacons.

[0003] A Bluetooth beacon is a device that uses Bluetooth low energy technology to transmit a unique identifier to its surroundings. It is primarily used for indoor positioning and push notification services. By broadcasting data packets containing specific information, mobile devices and other devices can recognize and interpret this information, enabling precise push notification and positioning.

[0004] The Bluetooth beacons in the existing positioning beacon network all send signals independently. After sending the signal, they will sleep, and then start sending the signal again when the interval time is up, and repeat this cycle. However, their sleep time is long, and the Bluetooth receiving module of the mobile terminal needs to be turned on all the time until it receives the traditional Bluetooth beacon signal, and then it will sleep. This will cause the Bluetooth receiving module of the mobile terminal to be turned on for a long time, resulting in excessive power consumption. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an auxiliary positioning beacon network with synchronous coordinated communication, which solves the problems raised by the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an auxiliary positioning beacon network with synchronous and coordinated communication, including multiple Bluetooth beacons, a server, a Bluetooth base station and a mobile terminal, characterized in that: the Bluetooth beacon includes a beacon processing module, a beacon signal transmission module and a Bluetooth transmitting module, and the mobile terminal includes a mobile processing module, a display screen, a Bluetooth receiving module and a Bluetooth signal transmission module; The plurality of Bluetooth beacons are connected to a Bluetooth base station via a beacon signal transmission module, the Bluetooth base station is connected to a server, the server numbers and sorts the plurality of Bluetooth beacons, so that the plurality of Bluetooth beacons are sorted and send signals cyclically, and the Bluetooth beacons send Bluetooth signals via a beacon Bluetooth transmission module; The mobile terminal is connected to the Bluetooth base station through the mobile signal transmission module, and the Bluetooth base station is connected to the server to obtain the signal transmission interval of the Bluetooth beacon; The mobile terminal starts a Bluetooth receiving module, the Bluetooth receiving module startup time is consistent with the signal transmission interval of the Bluetooth beacon, and the Bluetooth receiving module is shut down and sleeps after scanning and receiving the Bluetooth transmission signal of the nearby Bluetooth beacon; The mobile terminal transmits the received signal from the Bluetooth beacon to the Bluetooth base station, which sends the received signal to the server. The server processes and analyzes the signal to obtain the real-time location of the mobile terminal. The server transmits the calculation result back to the Bluetooth base station, and the Bluetooth base station sends the calculation result to the mobile terminal, and the mobile terminal displays the location information through a display screen.

[0007] Preferably, the Bluetooth base station is provided with a reference antenna and a uniform circular array consisting of 1 array antenna arranged with the reference antenna as the center of the circle; The uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antenna to receive data packets sent by the Bluetooth beacon, extract the IQ sampling data in the data packets, and use a two-dimensional spatial spectrum multi-signal classification algorithm to calculate the spatial azimuth and elevation angle of the Bluetooth beacon; Four array antennas in a uniform circular array are combined with a reference antenna at the center of the circle to form two mutually perpendicular three-antenna uniform linear antenna arrays. The two uniform linear antenna arrays receive data packets sent by Bluetooth beacons in a time-division multiplexing manner, switching from one end to the other. The IQ sampling data in the data packets is extracted, and the planar azimuth of the Bluetooth beacon on the two linear array antennas is calculated using a one-dimensional spatial spectrum multi-signal classification algorithm. The two angles are then combined to obtain the spatial azimuth of the Bluetooth beacon. Determine whether the absolute difference in the spatial azimuth angle obtained above is greater than the angle error range when the circular array antenna is designed. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the arrival angle of the Bluetooth beacon.

[0008] Preferably, the reference antenna and the array antenna both adopt dual-polarized microstrip antennas, and the two polarization directions of the antennas are perpendicular to each other.

[0009] Preferably, two polarization directions are used to receive data packets sent by the Bluetooth beacon, IQ sampling data in the data packets are extracted, and the set of IQ sampling data with a higher signal-to-noise ratio is selected to calculate and obtain the spatial azimuth and pitch angle or spatial azimuth respectively.

[0010] Preferably, an interference generation module is provided inside the Bluetooth beacon; The interference generating module 12 uses certain bits of the random address of the Bluetooth beacon 1 that changes with time as the interference amount, or generates the interference amount after performing a mathematical operation or character string transformation on the random address of the Bluetooth beacon that changes with time according to certain rules; At least one filling bit is determined according to the current time, the interference amount is filled in the filling bit, and the unique identifier of the Bluetooth beacon is filled in other bits to obtain a transmission identifier, and the transmission identifier is sent through a signal. Beneficial effects

[0011] The present invention provides an auxiliary positioning beacon network with synchronous and coordinated communication. Compared with the existing technology, it has the following advantages: 1. The auxiliary positioning beacon network with synchronous coordinated communication connects to the server through multiple Bluetooth beacons to send signals in a sequence and cycle, which can prevent the Bluetooth receiving module of the mobile terminal from being in the open state for a long time and reduce the power consumption of the mobile terminal.

[0012] 2. This auxiliary positioning beacon network with synchronous coordinated communication adds an additional antenna at the center position without changing the radius of the uniform circular array antenna, so that it can form two groups of uniform linear antenna arrays with the outer antennas, thereby further verifying the spatial azimuth angle of the Bluetooth beacon. This effectively solves the problem of phase instability caused by multipath interference of the received Bluetooth signal when using a single uniform circular array antenna, which leads to large fluctuations in the spatial azimuth angle of the beacon arrival angle calculation result. It improves the stability of the Bluetooth base station's calculation of the Bluetooth beacon's arrival angle in complex environments. At the same time, the design of dual-polarized antennas perpendicular to each other is used to receive the data packets sent by the Bluetooth beacon and select the group with the higher signal-to-noise ratio for calculation, further improving the Bluetooth base station's calculation accuracy of the arrival angle of Bluetooth beacons at different locations. 3. This auxiliary positioning beacon network with synchronous and coordinated communication transforms the unique identifier of the Bluetooth beacon into a transmission identifier that changes with time through interference, making it impossible for unauthorized malware to obtain a true and stable unique identifier. It is also difficult to forge corresponding services based on the unique identifier to defraud users of sensitive information, thereby protecting the interests of users and improving the security of the beacon network. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the workflow of the present invention.

[0014] In the figure: 1. Bluetooth beacon; 2. Server; 3. Mobile terminal; 4. Beacon processing module; 5. Beacon processing module; 6. Bluetooth transmitting module; 7. Display screen; 8. Mobile processing module; 9. Mobile signal transmission module; 10. Bluetooth receiving module; 11. Bluetooth base station; 12. Interference generation module. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1 The present invention provides a technical solution: an auxiliary positioning beacon network with synchronous coordinated communication, including multiple Bluetooth beacons 1, a server 2, a Bluetooth base station 11 and a mobile terminal 3, characterized in that: the Bluetooth beacon 1 includes a beacon processing module 5, a beacon signal transmission module 4 and a Bluetooth transmitting module 6, and the mobile terminal 3 includes a mobile processing module 8, a display screen 7, a Bluetooth receiving module 10 and a Bluetooth signal transmission module 9; Multiple Bluetooth beacons 1 are connected to a Bluetooth base station 11 via a beacon signal transmission module 4, and the Bluetooth base station 11 is connected to a server 2. The server 2 numbers and sorts the multiple Bluetooth beacons 1, so that the multiple Bluetooth beacons 1 are sorted and send signals cyclically. The Bluetooth beacons 1 send Bluetooth signals via a beacon Bluetooth transmission module 6; The mobile terminal 3 is connected to the Bluetooth base station 11 through the mobile signal transmission module 9, and the Bluetooth base station 11 is connected to the server 2, so as to obtain the signal transmission interval of the Bluetooth beacon 1; The mobile terminal 3 starts the Bluetooth receiving module 10. The Bluetooth receiving module 10 starts at the same time as the signal transmission interval of the Bluetooth beacon 1. The Bluetooth receiving module 10 scans and receives the Bluetooth transmission signal of the nearby Bluetooth beacon 1 and then shuts down to sleep. Mobile terminal 3 transmits the received signal from Bluetooth beacon 1 to Bluetooth base station 11. Bluetooth base station 11 sends the received signal to server 2. Server 2 processes and analyzes the signal to obtain the real-time location of mobile terminal 3. The server 2 transmits the calculation result back to the Bluetooth base station 11, and the Bluetooth base station 11 sends the calculation result to the mobile terminal 3, and the mobile terminal 3 displays the position information through the display screen 7; The traditional Bluetooth beacon 1 will send signals at intervals, and will sleep after sending the signals. Then, it will start sending signals again when the interval time is up, and repeat this cycle. However, its sleep time is long, and the Bluetooth receiving module 10 of the mobile terminal 3 needs to be turned on all the time until it receives the signal sent by the traditional Bluetooth beacon 1, and then it will sleep. This will cause the Bluetooth receiving module 10 of the mobile terminal 3 to be turned on for a long time, resulting in excessive power consumption. By connecting multiple Bluetooth beacons 1 to the server 2 for sequencing and cyclically sending signals, the time it takes for multiple Bluetooth beacons 1 to sequence and send signals at a time is less than the sleep time of the traditional Bluetooth beacon 1. This can reduce the time it takes for the Bluetooth receiving module 10 of the mobile terminal 3 to be turned on, and reduce the power consumption of the mobile terminal 3.

[0017] Furthermore, the Bluetooth base station 11 is provided with a reference antenna and a uniform circular array consisting of 1 array antenna arranged with the reference antenna as the center of the circle; The uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antenna to receive the data packet sent by Bluetooth beacon 1, extract the IQ sampling data in the data packet, and use the two-dimensional spatial spectrum multi-signal classification algorithm to calculate the spatial azimuth and elevation angle of Bluetooth beacon 1; Four array antennas in a uniform circular array are combined with a reference antenna at the center of the circle to form two mutually perpendicular three-antenna uniform linear antenna arrays. The two uniform linear antenna arrays receive data packets sent by Bluetooth beacon 1 in a time-division multiplexing manner, switching from one end to the other. The IQ sampling data in the data packets is extracted, and the plane azimuth of Bluetooth beacon 1 on the two linear array antennas is calculated using a one-dimensional spatial spectrum multi-signal classification algorithm. The two angles are then combined to obtain the spatial azimuth of Bluetooth beacon 1. Determine whether the absolute difference in the spatial azimuth angle obtained above is greater than the angle error range when the circular array antenna is designed. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the arrival angle of Bluetooth beacon 1; Both the reference antenna and the array antenna are dual-polarized microstrip antennas with the two polarization directions perpendicular to each other. Data packets sent by Bluetooth beacon 1 are received using the two polarization directions. IQ sampling data in the data packets is extracted, and the set with the higher signal-to-noise ratio of the two sets of IQ sampling data is selected to calculate the spatial azimuth and elevation angle, or the spatial azimuth angle. By adding an additional antenna at the center without changing the radius of the uniform circular array antenna, it forms two uniform linear antenna arrays with the outer antennas, further verifying the spatial azimuth angle of Bluetooth beacon 1. This effectively solves the problem of phase instability caused by multipath interference in the received Bluetooth signal when using a single uniform circular array antenna, which leads to large fluctuations in the spatial azimuth angle of the beacon arrival angle calculation result. This improves the stability of Bluetooth base station 11's arrival angle calculation for Bluetooth beacon 1 in complex environments. At the same time, a design of two perpendicular dual-polarized antennas is used to receive data packets sent by Bluetooth beacon 1 and select the group with the highest signal-to-noise ratio for calculation, further improving the accuracy of Bluetooth base station 11's arrival angle calculation for Bluetooth beacons 1 at different azimuths.

[0018] Furthermore, an interference generation module 12 is provided inside the Bluetooth beacon 1; The interference generating module 12 uses certain bits of the random address of the Bluetooth beacon 1 that changes with time as the interference amount, or generates the interference amount after performing a mathematical operation or character string transformation on the random address of the Bluetooth beacon 1 that changes with time according to certain rules; Determine at least one padding bit based on the current time, fill the padding bit with the interference amount, fill the other bits with the unique identifier of Bluetooth beacon 1, obtain a transmission identifier, and send the transmission identifier through a signal; When the mobile terminal 3 enters the coverage range of the Bluetooth beacon 1, it will receive the signal of the Bluetooth beacon 1. After receiving the transmission identifier sent by the application on the mobile terminal 3, the server 2 removes the interference and obtains the unique identifier of the Bluetooth beacon 1. This prevents unauthorized malware from obtaining a true and stable unique identifier, and makes it difficult to forge the corresponding service based on the unique identifier to defraud the user's sensitive information, thereby protecting the interests of the user and improving the security of the beacon network.

[0019] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0020] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0021] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning beacon network with synchronous coordinated communication, comprising a plurality of Bluetooth beacons (1), a server (2), a Bluetooth base station (11) and a mobile terminal (3), characterized in that: The Bluetooth beacon (1) includes a beacon processing module (5), a beacon signal transmission module (4) and a Bluetooth transmission module (6); the mobile terminal (3) includes a mobile processing module (8), a display screen (7), a Bluetooth receiving module (10) and a Bluetooth signal transmission module (9); The plurality of Bluetooth beacons (1) are connected to a Bluetooth base station (11) via a beacon signal transmission module (4), the Bluetooth base station (11) is connected to a server (2), the server (2) numbers and sorts the plurality of Bluetooth beacons (1), so that the plurality of Bluetooth beacons (1) are sorted and cyclically send signals, and the Bluetooth beacons (1) send Bluetooth signals via a beacon Bluetooth transmission module (6); The mobile terminal (3) is connected to the Bluetooth base station (11) via the mobile signal transmission module (9), and the Bluetooth base station (11) is connected to the server (2), so as to obtain the signal transmission interval time of the Bluetooth beacon (1); The mobile terminal (3) starts the Bluetooth receiving module (10), the Bluetooth receiving module (10) starts at the same time as the signal transmission interval of the Bluetooth beacon (1), and the Bluetooth receiving module (10) scans and receives the Bluetooth transmission signal of the nearby Bluetooth beacon (1) and then shuts down to sleep; The mobile terminal (3) transmits the received signal from the Bluetooth beacon (1) to the Bluetooth base station (11), and the Bluetooth base station (11) sends the received signal to the server (2), and the server (2) processes and analyzes the signal to obtain the real-time location of the mobile terminal (3); The server (2) transmits the calculation result back to the Bluetooth base station (11), and the Bluetooth base station (11) sends the calculation result to the mobile terminal (3), and the mobile terminal (3) displays the location information through the display screen (7).

2. The assisted positioning beacon network with synchronous coordinated communication according to claim 1, characterized in that: The Bluetooth base station (11) is provided with a reference antenna and a uniform circular array consisting of 1 array antenna arranged with the reference antenna as the center of the circle; The uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antenna to receive the data packet sent by the Bluetooth beacon (1), extract the IQ sampling data in the data packet, and calculate the spatial azimuth and elevation angle of the Bluetooth beacon (1) using a two-dimensional spatial spectrum multi-signal classification algorithm; Four array antennas in a uniform circular array are selected and combined with a reference antenna located at the center of the circle to form two groups of three-antenna uniform linear antenna arrays perpendicular to each other. The two groups of uniform linear antenna arrays receive data packets sent by the Bluetooth beacon (1) in a time-division multiplexing manner, switch from one end to the other end, extract IQ sampling data in the data packets, and use a one-dimensional spatial spectrum multi-signal classification algorithm to calculate the plane azimuth of the Bluetooth beacon (1) on the two linear array antennas, and combine the two angles to obtain the spatial azimuth of the Bluetooth beacon (1); Determine whether the absolute difference of the spatial azimuth angle obtained above is greater than the angle error range when the circular array antenna is designed. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the arrival angle of the Bluetooth beacon (1).

3. The assisted positioning beacon network with synchronous coordinated communication according to claim 1, characterized in that: The reference antenna and the array antenna both adopt dual-polarization microstrip antennas, and the two polarization directions of the antennas are perpendicular to each other.

4. The assisted positioning beacon network with synchronous coordinated communication according to claim 3, characterized in that: The data packets sent by the Bluetooth beacon (1) are received using two polarization directions, the IQ sampling data in the data packets are extracted, and the set with a higher signal-to-noise ratio among the two sets of IQ sampling data is selected to calculate and obtain the spatial azimuth and pitch angle or spatial azimuth respectively.

5. The assisted positioning beacon network with synchronous coordinated communication according to claim 1, characterized in that: An interference generation module (12) is provided inside the Bluetooth beacon (1); The interference generating module 12 uses certain bits of the random address of the Bluetooth beacon 1 that changes with time as the interference amount, or generates the interference amount after performing a mathematical operation or character string transformation on the random address of the Bluetooth beacon (1) that changes with time according to certain rules; At least one filling bit is determined according to the current time, the interference amount is filled in the filling bit, and the unique identifier of the Bluetooth beacon (1) is filled in the other bits to obtain a transmission identifier, and the transmission identifier is sent through a signal.

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