An assisted positioning beacon network with synchronized coordinated communication

Abstract

The application 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. The 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. The auxiliary positioning beacon network with synchronous coordination communication can avoid the Bluetooth receiving module of the mobile terminal from being in an open state for a long time and reduce the consumption of the power of the mobile terminal through the connection of the plurality of Bluetooth beacons with the server for the sorting circulation transmission of signals.

Description

Technical Field

[0001] This invention relates to the field of positioning beacon technology, specifically to an auxiliary positioning beacon network with synchronous and coordinated communication. Background Technology

[0002] A location beacon network is a network system that uses location beacons to achieve location tracking. A location beacon is a radio transmitter primarily used to provide location information in small indoor or outdoor spaces, supporting location-based service applications or systems. This particular location beacon is a Bluetooth beacon.

[0003] A Bluetooth beacon is a device that uses Bluetooth Low Energy technology to send a unique identifier to its surroundings. It is primarily used for indoor positioning and push services. By broadcasting data packets containing specific information, mobile devices and other terminal devices can identify and parse this information, thereby achieving accurate push notifications and location tracking.

[0004] In existing positioning beacon networks, Bluetooth beacons transmit signals independently, then go to sleep after transmitting a signal, and then restart transmitting a signal after an interval, repeating this cycle. However, their sleep time is relatively long, requiring the mobile terminal's Bluetooth receiver module to remain on until it receives a signal from a traditional Bluetooth beacon before going to sleep. This results in the mobile terminal's Bluetooth receiver module being on for an extended period, leading to excessive power consumption. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary positioning beacon network with synchronous and coordinated communication, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary positioning beacon network with synchronous and coordinated communication, comprising 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; the mobile terminal includes a mobile processing module, a display screen, a Bluetooth receiving module, and a Bluetooth signal transmission module. Multiple 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 multiple Bluetooth beacons, causing the multiple Bluetooth beacons to send signals in a sorted and cyclical manner. The Bluetooth beacons send Bluetooth signals through a beacon Bluetooth transmission module. The mobile terminal is connected to a Bluetooth base station via a mobile signal transmission module. The Bluetooth base station is connected to a server to obtain the signal transmission interval of the Bluetooth beacon. The mobile terminal starts the Bluetooth receiving module. The start time of the Bluetooth receiving module is the same as the signal transmission interval of the Bluetooth beacon. After scanning and receiving the Bluetooth transmission signal of the nearby Bluetooth beacon, the Bluetooth receiving module turns off and goes into sleep mode. The mobile terminal transmits the received signal from the Bluetooth beacon to the Bluetooth base station. The Bluetooth base station sends the received signal to the server. The server processes and analyzes the signal to determine the real-time location of the mobile terminal. The server sends the calculation results back to the Bluetooth base station, which then sends the calculation results to the mobile terminal. The mobile terminal displays the location information on its screen.

[0007] Preferably, the Bluetooth base station is provided with a reference antenna and a uniform circular array consisting of an array of antennas arranged with the reference antenna as the center. A uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antennas to receive data packets sent by Bluetooth beacons, extracts IQ sampling data from the data packets, and uses a two-dimensional spatial spectrum multi-signal classification algorithm to calculate the spatial azimuth and elevation angles of the Bluetooth beacon. 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 sets of three-antenna uniform linear antenna arrays that are perpendicular to each other. The two sets of uniform linear antenna arrays are time-division multiplexed to receive data packets sent by the Bluetooth beacon in the direction from one end to the other. The IQ sampling data in the data packets are extracted, and the planar azimuth angle 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 angle of the Bluetooth beacon. Determine whether the absolute difference of the spatial azimuth angle obtained above is greater than the angle error range in the design of the circular array antenna. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the angle of arrival of the Bluetooth beacon.

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

[0009] Preferably, data packets sent by Bluetooth beacons are received using two polarization directions, IQ sampling data is extracted from the data packets, 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 angles or spatial azimuth angles respectively.

[0010] Preferably, an interference generation module is provided inside the Bluetooth beacon; The interference generation module 12 uses certain bits of the random address of the Bluetooth beacon 1 that changes over time as interference, or performs mathematical operations or string transformations on the random address of the Bluetooth beacon that changes over time according to certain rules to generate interference. 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 the Bluetooth beacon, obtain the transmission identifier, and send the transmission identifier via a signal. Beneficial effects

[0011] This invention provides an auxiliary positioning beacon network with synchronized and coordinated communication. Compared with the prior art, it has the following advantages: 1. This auxiliary positioning beacon network with synchronous and coordinated communication connects to the server through multiple Bluetooth beacons and sends signals in a sorted and cyclical manner, which can avoid the mobile terminal's Bluetooth receiver module being turned on for a long time and reduce the power consumption of the mobile terminal.

[0012] 2. This auxiliary positioning beacon network with synchronous and coordinated communication adds an extra antenna at the center without changing the radius of the uniform circular array antenna. This allows it to form two sets of uniform linear antenna arrays with the outer antennas, further verifying the spatial azimuth angle of the Bluetooth beacon. This effectively solves the problem of unstable phase of the received Bluetooth signal due to multipath interference when using a single uniform circular array antenna, which leads to large fluctuations in the spatial azimuth angle calculation result of the beacon. This improves the stability of the Bluetooth base station in calculating the Bluetooth beacon's angle of arrival in complex environments. Simultaneously, by using mutually perpendicular dual-polarized antennas to receive data packets sent by the Bluetooth beacon and selecting the set with the higher signal-to-noise ratio for calculation, the accuracy of the Bluetooth base station in calculating the angle of arrival of Bluetooth beacons in different locations is further improved. 3. This auxiliary positioning beacon network with synchronous and coordinated communication transforms the unique identifier of the Bluetooth beacon into a time-varying transmission identifier through interference before sending it. This prevents unauthorized malicious software from obtaining a real and stable unique identifier, making it difficult for them to forge corresponding services based on the unique identifier to deceive users and obtain sensitive information. This protects users' interests and improves the security of the beacon network. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the workflow of the structure of the present invention.

[0014] In the diagram: 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 Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1 The present invention provides a technical solution: an auxiliary positioning beacon network with synchronous and 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 Bluetooth base station 11 through beacon signal transmission module 4. Bluetooth base station 11 is connected to server 2. Server 2 numbers and sorts the multiple Bluetooth beacons 1, so that the multiple Bluetooth beacons 1 send signals in a sorted and cyclical manner. Bluetooth beacons 1 send Bluetooth signals through beacon Bluetooth transmission module 6. Mobile terminal 3 is connected to Bluetooth base station 11 through mobile signal transmission module 9. Bluetooth base station 11 is connected to server 2 to obtain the signal transmission interval of Bluetooth beacon 1. The mobile terminal 3 starts the Bluetooth receiving module 10. The start-up time of the Bluetooth receiving module 10 is the same as the signal transmission interval of the Bluetooth beacon 1. After scanning and receiving the Bluetooth transmission signal of the nearby Bluetooth beacon 1, the Bluetooth receiving module 10 shuts down and goes into sleep mode. Mobile terminal 3 transmits the signal received 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 determine the real-time location of mobile terminal 3. Server 2 sends the calculation result back to Bluetooth base station 11, Bluetooth base station 11 sends the calculation result to mobile terminal 3, and mobile terminal 3 displays the location information through display screen 7. Traditional Bluetooth beacons 1 send signals intermittently, then go to sleep, and then restart sending signals after the interval, repeating this cycle. However, their sleep time is relatively long, requiring the Bluetooth receiver module 10 of the mobile terminal 3 to remain on until it receives a signal from the traditional Bluetooth beacon 1. This results in a long operating time for the Bluetooth receiver module 10 of the mobile terminal 3, leading to excessive power consumption. By connecting multiple Bluetooth beacons 1 to the server 2 and sending signals in a sorted and cyclical manner, the time taken for multiple Bluetooth beacons 1 to send signals in a single sorted manner is less than the sleep time of the traditional Bluetooth beacon 1. This reduces the operating time of the Bluetooth receiver module 10 of the mobile terminal 3, thus reducing the power consumption of the mobile terminal 3.

[0017] Furthermore, the Bluetooth base station 11 is equipped with a reference antenna and a uniform circular array of array antennas arranged with the reference antenna as the center. The uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antennas to receive data packets sent by Bluetooth beacon 1, extracts IQ sampling data from the data packets, and uses a two-dimensional spatial spectrum multi-signal classification algorithm to calculate the spatial azimuth and elevation angles of Bluetooth beacon 1. 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 sets of three-antenna uniform linear antenna arrays that are perpendicular to each other. The two sets of uniform linear antenna arrays are time-division multiplexed to receive data packets sent by Bluetooth beacon 1 in the direction from one end to the other. IQ sampling data in the data packets are extracted, and the planar azimuth angle 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 angle of Bluetooth beacon 1. Determine whether the absolute difference of the spatial azimuth angle obtained above is greater than the angle error range when designing the circular array antenna. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the angle of arrival of Bluetooth beacon 1. Both the reference antenna and the array antenna are dual-polarized microstrip antennas with the two polarization directions of the antenna being perpendicular to each other. The data packets sent by Bluetooth beacon 1 are received using the two polarization directions. The IQ sampling data in the data packets are 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 angles, or the spatial azimuth angle. By adding an additional antenna at the center without changing the radius of the uniform circular array antenna, forming two sets of uniform linear antenna arrays with the outer antennas, the spatial azimuth angle of Bluetooth beacon 1 can be further verified. 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 significant fluctuations in the spatial azimuth angle calculation result of the beacon. This improves the stability of the Bluetooth base station 11 in calculating the angle of arrival of Bluetooth beacon 1 in complex environments. Simultaneously, by using a mutually perpendicular dual-polarized antenna design to receive data packets sent by Bluetooth beacon 1 and selecting the set with the higher signal-to-noise ratio for calculation, the accuracy of the Bluetooth base station 11 in calculating the angle of arrival of Bluetooth beacon 1 in different azimuths is further improved.

[0018] Furthermore, an interference generation module 12 is provided inside the Bluetooth beacon 1; The interference generation module 12 uses certain bits of the random address of Bluetooth beacon 1 that changes over time as interference, or performs mathematical operations or string transformations on the random address of Bluetooth beacon 1 that changes over time according to certain rules to generate interference. Determine at least one padding bit based on the current time, fill the padding bit with the interference amount, and fill the other bits with the unique identifier of Bluetooth beacon 1 to obtain the transmission identifier. Send the transmission identifier through the signal. When mobile terminal 3 enters the coverage area of ​​Bluetooth beacon 1, it will receive the signal from Bluetooth beacon 1. Server 2 receives the transmission identifier sent by the application on mobile terminal 3, removes the interference, and obtains the unique identifier of Bluetooth beacon 1. This makes it impossible for unauthorized malicious software to obtain a real and stable unique identifier, and it is difficult to use the unique identifier to forge the corresponding service to deceive users and obtain sensitive information, thereby protecting the interests of users and improving the security of the beacon network.

[0019] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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

Claims

1. An auxiliary positioning beacon network with synchronous and coordinated communication, comprising 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). 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). 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) send signals in a sorted and cyclical manner. The Bluetooth beacons (1) send Bluetooth signals through a Bluetooth transmission module (6). The mobile terminal (3) is connected to the Bluetooth base station (11) through the Bluetooth signal transmission module (9), and the Bluetooth base station (11) is connected to the server (2) to obtain the signal transmission interval of the Bluetooth beacon (1); The mobile terminal (3) starts the Bluetooth receiving module (10). The start time of the Bluetooth receiving module (10) is the same as the signal transmission interval of the Bluetooth beacon (1). After scanning and receiving the Bluetooth transmission signal of the nearby Bluetooth beacon (1), the Bluetooth receiving module (10) shuts down and goes into sleep mode. The mobile terminal (3) transmits the signal received from the Bluetooth beacon (1) to the Bluetooth base station (11). The Bluetooth base station (11) sends the received signal to the server (2). The server (2) processes and analyzes the signal to obtain the real-time location of the mobile terminal (3). The server (2) sends the calculation result back to the Bluetooth base station (11), 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); The Bluetooth base station (11) has a reference antenna and a uniform circular array of array antennas arranged with the reference antenna as the center. The uniform circular array rotates counterclockwise or clockwise in a time-division multiplexing manner to switch the array antennas to receive data packets sent by the Bluetooth beacon (1), extracts the IQ sampling data in the data packets, and uses a two-dimensional spatial spectrum multi-signal classification algorithm to calculate the spatial azimuth and elevation angles of the Bluetooth beacon (1). 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 sets of three-antenna uniform linear antenna arrays that are perpendicular to each other. The two sets of uniform linear antenna arrays are time-division multiplexed and switch to receive data packets sent by the Bluetooth beacon (1) from one end to the other. The IQ sampling data in the data packets are extracted, and the plane azimuth angle of the 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 combined to obtain the spatial azimuth angle 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 designing the circular array antenna. If so, discard the data packet; otherwise, retain the data packet and use the above calculation result as the angle of arrival of the Bluetooth beacon (1).

2. The auxiliary positioning beacon network with synchronous coordination communication according to claim 1, characterized in that: Both the reference antenna and the array antenna are dual-polarized microstrip antennas, and the two polarization directions of the antennas are perpendicular to each other.

3. The auxiliary positioning beacon network with synchronous coordinated communication according to claim 2, 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 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 spatial azimuth angle respectively.

4. The auxiliary positioning beacon network with synchronous coordination communication according to claim 1, characterized in that: An interference generation module (12) is provided inside the Bluetooth beacon (1); The interference generation module (12) uses a few bits of the random address of the Bluetooth beacon (1) that changes over time as interference, or performs mathematical operations or string transformations on the random address of the Bluetooth beacon (1) that changes over time according to certain rules to generate interference. At least one fill bit is determined based on the current time, the interference amount is filled in the fill bit, and the unique identifier of the Bluetooth beacon (1) is filled in the other bits to obtain the transmission identifier, and the transmission identifier is sent through a signal.

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