Beacon positioning device based on 5G network

Abstract

The present disclosure relates to a beacon positioning device based on a 5G network, which is applied to an indoor positioning system, and includes a beacon positioning device, a terminal device and a cell base station. The terminal device has a configuration message, the beacon positioning device does not provide communication services and is deployed within the coverage of the cell base station in one of the following ways: independent deployment, deployment in a BBU and deployment in an RRU; the beacon positioning device includes a message sending module and a message feature selection module; the message sending module is configured to send a positioning message to the terminal device, the positioning message has a distinguishing feature, and the distinguishing feature is used to distinguish the beacon positioning device. If the terminal device receives the positioning message, the terminal device obtains the distinguishing feature of the positioning message, obtains an identification code of the beacon positioning device based on the distinguishing feature, measures key parameters of the positioning message, and then generates a measurement report. If the cell base station receives the measurement report, the position of the terminal device is obtained; the message feature selection module is configured to adjust the distinguishing feature.

Description

[0001] This application is filed on February 8, 2021 、Application No. 2021101798358 、The name of the invention is Based on 5G network Indoor positioning system and method based on network A divisional application for a patent application. Technical Field

[0002] The present disclosure generally relates to a beacon positioning device based on a 5G network. Background Art

[0003] Currently, there are three main positioning methods in the 3GPP system.

[0004] The first is to use the Assisting-GNSS (A-GNSS) positioning method. This method relies on the Global Navigation Satellite System (GNSS) to obtain the location coordinate information of the terminal device. However, in indoor positioning scenarios, the positioning accuracy of this positioning method is low.

[0005] The second is the positioning method based on the cell ID. This positioning method obtains the geographical location information of the cell according to the ID of the cell where the terminal device is located. Then, the geographical location information is used as the location information of the terminal device. The positioning accuracy of this method is directly related to the cell range. The larger the cell range, the lower the positioning accuracy. If the cell range is reduced, although the positioning accuracy is relatively improved, the deployment cost will increase.

[0006] The third is the Observed Time Difference of Arrival (OTDOA) positioning method. This method requires the terminal device to measure the signals of multiple cells. According to the time error, angle error and other information between the signals of multiple cells, the location of the terminal device is obtained through the algorithm. In an open environment, this positioning method has a high positioning accuracy. However, in a complex environment, this positioning method has high requirements for the algorithm. Moreover, when there are a large number of obstructions in the environment that block the cell signal, the positioning accuracy of this positioning method will be greatly reduced. Summary of the invention

[0007] The present disclosure is made in view of the above-mentioned state of the prior art, and its purpose is to provide an indoor positioning system and method based on a 5G network with higher positioning accuracy and lower deployment cost.

[0008] To this end, the first aspect of the present disclosure provides an indoor positioning system based on a 5G network, wherein the indoor positioning system includes multiple beacon positioning devices, terminal equipment and cell base stations, wherein the beacon positioning device is deployed within the coverage area of ​​the cell base station, and the beacon positioning device includes a message sending module and a message feature selection module, wherein the message sending module is used to periodically send positioning messages, and the message feature selection module is used to adjust the distinguishing features of the positioning messages; the terminal equipment includes a configuration message receiving module, a positioning message receiving module, a positioning message measurement module and a report sending module, wherein the configuration message receiving module is used to receive the configuration message of the cell base station, the positioning message receiving module periodically receives the positioning message sent by the beacon positioning device based on the configuration message, and obtains the distinguishing features of the positioning message, and the positioning message receiving module obtains the distinguishing features of the positioning message based on the distinguishing features. The identification code of the beacon positioning device, the positioning message measurement module measures the key parameters of the positioning message based on the configuration message, the report sending module generates a measurement report based on the configuration message, the identification code and the key parameters, and periodically sends the measurement report to the cell base station; the cell base station has the distinguishing features, the identification code and the geographical location information of each of the beacon positioning devices within its coverage range, the cell base station includes a configuration message sending module and a measurement report receiving module, if the terminal device establishes a connection with the cell base station, the configuration message sending module sends the configuration message to the terminal device, the configuration message includes the identification code and the distinguishing features of the beacon positioning device, if the measurement report receiving module receives the measurement report sent by the terminal device, the measurement report receiving module obtains the position of the terminal device based on the measurement report. In this case, in the indoor positioning scenario, the indoor positioning system involved in the present disclosure has a high positioning accuracy. In a complex environment, the indoor positioning system involved in the present disclosure can still maintain a high positioning accuracy. In addition, the indoor positioning system involved in the present disclosure has a low deployment cost. The indoor positioning system involved in the present disclosure can reduce interference to nearby base stations.

[0009] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the positioning message is one of SSB or CSI-RS. In this case, the indoor positioning system can be applied to the 5G network.

[0010] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the distinguishing feature includes at least one of a time domain feature, a frequency domain feature, a PCI, a transmission power, and a scrambling code, thereby enabling the terminal device to identify different beacon positioning devices based on different types of distinguishing features.

[0011] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the key parameter is at least one of signal reception strength or signal reception power, thereby facilitating subsequent terminal devices to measure different types of key parameters.

[0012] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the bandwidth and transmission power of the beacon positioning device are smaller than those of the cell base station. In this case, the coverage of the beacon positioning device is smaller than the coverage of the cell base station, and the beacon positioning device can be deployed within the coverage of the cell base station. At the same time, the beacon positioning device can reduce interference to the cell base station.

[0013] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the beacon positioning device is deployed independently or in the BBU or RRU, thereby improving the flexibility of the deployment of the beacon positioning device.

[0014] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the configuration information includes a period for the terminal device to receive the positioning message and a period for sending the measurement report, thereby enabling the terminal device to receive the positioning message and send the measurement report at a preset time interval.

[0015] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the cell base station establishes a connection with the terminal device via an RRC protocol, thereby facilitating the cell base station to configure the terminal device based on the RRC protocol.

[0016] In addition, in the indoor positioning system involved in the first aspect of the present disclosure, optionally, the measurement report includes the identification code and the key parameter. Thus, the cell base station can obtain the location of the terminal device based on the identification code and key parameters in the measurement report and the location information of each beacon positioning device within the coverage area of ​​the cell base station.

[0017] In addition, the second aspect of the present disclosure relates to an indoor positioning method based on a 5G network, which includes: a cell base station sends a configuration message to a terminal device, and the terminal device completes the configuration based on the configuration information; the terminal device periodically receives the positioning message sent by the beacon positioning device within the coverage of the cell base station, obtains the distinguishing features of the beacon positioning device, obtains the identification code of the beacon positioning device that sends the positioning message based on the distinguishing features, and measures the key parameters of the positioning message; the terminal device generates a measurement report based on the identification code, the key parameters and the configuration message, and periodically sends the measurement report to the cell base station; the cell base station receives the measurement report sent by the terminal device, and obtains the location of the terminal device based on the measurement report and the location information of each beacon positioning base station within the coverage of the cell base station. In this case, the indoor positioning system involved in the present disclosure has a high positioning accuracy. In a complex environment, the indoor positioning system involved in the present disclosure can still maintain a high positioning accuracy. In addition, the indoor positioning system involved in the present disclosure has a low deployment cost.

[0018] According to the present disclosure, a 5G network-based indoor positioning system and method with higher positioning accuracy and lower deployment cost are provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Embodiments of the present disclosure will now be explained in further detail, by way of example only, with reference to the accompanying drawings, in which:

[0020] Figure 1 A block diagram of an indoor positioning system based on a 5G network involved in the present disclosure is shown.

[0021] Figure 2 A block diagram of a beacon positioning device of an indoor positioning system based on a 5G network involved in the present disclosure is shown.

[0022] Figure 3 A schematic diagram showing an example of a deployment method of a beacon positioning device of an indoor positioning system based on a 5G network involved in the present disclosure.

[0023] Figure 4 A schematic diagram of a variation of the deployment method of the beacon positioning device of the indoor positioning system based on the 5G network involved in the present disclosure is shown.

[0024] Figure 5 A block diagram of a terminal device of an indoor positioning system based on a 5G network involved in the present disclosure is shown.

[0025] Figure 6 A block diagram of a cell base station of an indoor positioning system based on a 5G network involved in the present disclosure is shown.

[0026] Figure 7 A schematic diagram of the processing flow of a cell base station of an indoor positioning system based on a 5G network involved in the present disclosure is shown.

[0027] Figure 8 An interactive schematic diagram of the 5G network-based indoor positioning system 1 involved in the present disclosure is shown.

[0028] Fig. 9 A flow chart of the indoor positioning method 9 based on the 5G network involved in the present disclosure is shown. DETAILED DESCRIPTION

[0029] Hereinafter, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same symbols are assigned to the same components, and repeated descriptions are omitted. In addition, the accompanying drawings are only schematic diagrams, and the ratio of the dimensions of the components or the shapes of the components may be different from the actual ones.

[0030] The present disclosure relates to an indoor positioning system based on a 5G network. The indoor positioning system based on a 5G network involved in the present disclosure can be referred to as an indoor positioning system for short. Figure 1 FIG. 1 shows a block diagram of an indoor positioning system based on a 5G network involved in the present disclosure. Figure 1 As shown, the indoor positioning system 1 may include multiple beacon positioning devices 11, terminal equipment 12 and cell base stations 13. The indoor positioning system 1 involved in the present disclosure has high positioning accuracy. Even in a complex environment with a large number of obstructions, the indoor positioning system 1 can still maintain a high positioning accuracy. In addition, the indoor positioning system 1 is designed based on 5G technology and can be integrated with the indoor 5G deployment solution, which is simple and convenient to deploy. The indoor positioning system 1 also has a low deployment cost. At the same time, the indoor positioning system 1 involved in the present disclosure can also reduce interference to nearby base stations.

[0031] Figure 2 A block diagram of a beacon positioning device 11 of an indoor positioning system 1 based on a 5G network involved in the present disclosure is shown.

[0032] In some examples, such as Figure 2 As described above, the beacon positioning device 11 may include a message sending module 111 and a message feature selection module 112 .

[0033] In some examples, the message sending module 111 may be used to periodically send positioning messages. In some examples, the positioning message may be a synchronization signal / physical broadcast channel information block (SSB, SS / PBCH Block) or a channel state indicator reference signal (CSI-RS). However, the present embodiment is not limited thereto.

[0034] In some examples, the positioning message may be received by the terminal device 12. The terminal device 12 may identify the beacon positioning device 11 that sends the positioning message based on the received positioning message.

[0035] In some examples, the positioning message may have a distinguishing feature, wherein the distinguishing feature may be used to distinguish different positioning messages, and further distinguish different beacon positioning devices 11 .

[0036] In some examples, the distinguishing feature may be at least one of a time domain feature, a frequency domain feature, PCI, a transmit power, and a scrambling code. The frequency domain feature may be, for example, a frequency point. The time domain feature may be, for example, the time at which the message is sent.

[0037] In some examples, the message feature selection module 112 may be used to adjust the distinctive features of the positioning message sent by the beacon positioning device 11. Specifically, the message feature selection module 112 may be used to adjust the distinctive features of the positioning message sent by the message sending module 111.

[0038] For example, the message sending modules 111 of multiple beacon positioning devices 11 can send SSB messages at the same time. The message feature selection modules 112 of each beacon positioning device 11 can adjust the distinguishing features of the SSB message. Specifically, each message feature selection module 112 can select the frequency of the corresponding SSB message, the time or PCI of the SSB message transmission. Among them, the frequency of each SSB message can be different frequencies, the time of transmission can also be different times, and the PCI used can be different PCI. In this case, the terminal device 12 can distinguish different SSB messages based on the frequency domain characteristics, time domain characteristics and PCI of the SSB message, and then distinguish different beacon positioning devices 11.

[0039] In some examples, the beacon positioning device 11 may have a smaller bandwidth and transmission power. Specifically, the bandwidth of the beacon positioning device 11 may be smaller than the bandwidth of the cell base station 13, and the transmission power of the beacon positioning device 11 may be smaller than the transmission power of the cell base station 13. Thus, the interference between the beacon positioning device 11 and the cell base station 13 can be reduced.

[0040] In some examples, the beacon positioning device 11 may have a smaller size. Specifically, the size of the beacon positioning device 11 is smaller than that of the cell base station 13. This facilitates the deployment of the beacon positioning device 11 and reduces the deployment cost of the beacon positioning device 11.

[0041] In some examples, the beacon positioning device 11 can be deployed independently or on a BBU or RRU, thereby improving the flexibility of the deployment of the beacon positioning device 11.

[0042] In some examples, as described above, the transmission power of the beacon positioning device 11 may be smaller than that of the cell base station 13, that is, the coverage of the beacon positioning device 11 is smaller than that of the cell base station 13. In this case, the beacon positioning device 11 may be deployed within the coverage of the cell base station 13.

[0043] In some examples, the beacon positioning device 11 can be deployed in multiple ways. Figure 3 FIG. 1 is a schematic diagram showing an example of a deployment method of a beacon positioning device 11 of an indoor positioning system 1 based on a 5G network according to the present disclosure. Figure 3 As shown, the hexagon 11a can represent the coverage of the beacon positioning device 11. The circle 13a can represent the coverage of the cell base station 13. The beacon positioning device 11 can be deployed in a cellular structure. Multiple beacon positioning devices 11 are closely adjacent to each other with the maximum coverage radius as the boundary. The coverage range obtained by superimposing the coverage ranges of multiple beacon positioning devices 11 can be approximately equal to or greater than the coverage range of the cell base station 13. In this case, the indoor positioning system 1 can locate the terminal device 12 at any position within the coverage range. In addition, in this case, due to the large number of deployed beacon positioning devices 11, the terminal device 12 can receive more positioning messages and measure more key parameters of the positioning messages, thereby improving the accuracy of positioning.

[0044] Figure 4 FIG. 1 is a schematic diagram showing a modified example of the deployment method of the beacon positioning device 11 of the indoor positioning system 1 based on the 5G network involved in the present disclosure. In the modified example, Figure 4 As shown, the hexagon 11b can represent the coverage of the beacon positioning device 11. The circle 13b can represent the coverage of the cell base station 13. In the deployment mode of the modified example, the beacon positioning device 11 can be deployed only at a few important locations. Thus, the deployment cost of the beacon positioning device 11 can be reduced.

[0045] In some examples, the beacon positioning device 11 may not provide communication services, that is, the beacon positioning device 11 only sends a positioning message and does not establish a connection with the terminal device 12. In this way, the interference of the beacon positioning device 11 to the cell base station 13 can be reduced. Specifically, if the positioning message sent by the beacon positioning device 11 is an SSB message, the SSB message includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a master information block (MIB). The cellBarred parameter in the MIB can be set to be unable to establish a connection. Therefore, if the terminal device 12 receives the SSB message sent by the beacon positioning device 11, the terminal device 12 will not establish a connection with the beacon positioning device 11.

[0046] In some examples, when the positioning message sent by the beacon positioning device 11 is an SSB message, the SSB message sent by the beacon positioning device 11 may include frequency domain information of the SSB message sent by the cell base station 13. Specifically, the pdcch-ConfigSIB1 of the MIB in the SSB message sent by the beacon positioning device 11 can be set to the frequency of the SSB message sent by the cell base station 13. In this case, when the terminal device 12 receives the SSB message from the beacon positioning device 11, the terminal device 12 can obtain the frequency of the SSB message sent by the cell base station 13. As a result, it is convenient for the terminal device 12 to establish a connection with the cell base station 13, and the interference of the beacon positioning device 11 to the cell base station 13 is reduced.

[0047] Figure 5 A block diagram of a terminal device 12 of an indoor positioning system 1 based on a 5G network involved in the present disclosure is shown.

[0048] In this embodiment, as described above, the indoor positioning system 1 may include a terminal device 12. In some examples, such as Figure 5 As shown, the terminal device 12 may include a configuration message receiving module 121 , a positioning message receiving module 122 , a positioning message measuring module 123 and a report sending module 124 .

[0049] In some examples, the configuration message receiving module 121 can be used to receive a configuration message sent by a cell base station 13. The cell base station 13 has distinguishing features, identification codes, and geographic location information of each beacon positioning device 11 within its coverage area. The identification code corresponds one-to-one with the beacon positioning device 11. The identification code can be used to distinguish each beacon positioning device 11. In some examples, the configuration message may include distinguishing features and identification codes of each beacon positioning device 11 within the coverage area of ​​the cell base station 13. After receiving the configuration message, the configuration message receiving module 121 can store the distinguishing feature information and identification code information included in the configuration message. As a result, it is beneficial for the terminal device 12 to identify the beacon positioning device 11 that sends the positioning message based on the received positioning message, and obtain the identification code corresponding to the beacon positioning device 11.

[0050] In some other examples, the terminal device 12 may be configured based on the configuration message. In this case, the terminal device 12 may have the functions of the positioning message receiving module 122 , the positioning message measuring module 123 and the report sending module 124 .

[0051] In some examples, the positioning message receiving module 122 can periodically receive the positioning message sent by the beacon positioning device 11 based on the configuration message, and obtain the distinguishing features of the positioning message. Specifically, when the positioning message receiving module 122 receives the positioning message, the positioning message receiving module 122 can parse the positioning message to obtain the distinguishing features of the positioning message.

[0052] In some examples, the positioning message receiving module 122 can obtain the identification code of the beacon positioning device 11 that sends the positioning message based on the obtained distinguishing feature. Specifically, the positioning message receiving module 122 compares the obtained distinguishing feature with the distinguishing features of each beacon positioning device 11 included in the configuration message.

[0053] If there is a distinguishing feature that is the same as the distinguishing feature of the positioning message obtained by the positioning message receiving module 122 among the multiple distinguishing features included in the configuration message, the positioning message receiving module 122 can extract the identification code corresponding to the distinguishing feature from the configuration message. That is, the positioning message receiving module 122 can determine the identification code of the beacon positioning device 11 that sends the positioning message by parsing the received positioning message. The positioning message receiving module 122 can send the determined identification code to the positioning message measurement module 123. For example, there are three beacon positioning devices 11 in the coverage area of ​​the cell base station 13, and the identification codes of the three beacon positioning devices 11 are a, b, and c, respectively, and the PCI codes are 150, 151, and 152, respectively. The configuration message receiving module 121 receives a configuration message from the cell base station 13, and the configuration message contains the PCI codes and identification codes of the above three beacon positioning devices 11. The positioning message receiving module 122 receives an SSB message sent by the beacon positioning device 11 with a PCI code of 150, and obtains the PCI code by parsing the SSB message. By comparing with the PCI code included in the configuration message, the terminal device 12 can obtain the identification code a of the beacon positioning device 11 with a PCI code of 150.

[0054] In some examples, the positioning message measurement module 123 can measure the key parameters of the positioning message based on the configuration message. In other words, the positioning message measurement module 123 can measure the key parameters of the positioning message received by the positioning message receiving module 122 based on a preset period. Specifically, the positioning message receiving module 122 can receive the positioning message. The positioning message receiving module 122 can obtain the identification code corresponding to the beacon positioning device 11 that sends the positioning message, and send the identification code to the positioning message measurement module 123. After receiving the identification code sent by the positioning message receiving module 122, the positioning message measurement module 123 measures the key parameters of the positioning message, binds the key parameters with the identification code, and sends them to the report sending module 124.

[0055] In some examples, the key parameters may be received signal strength (RSSI) and received signal power (RSRP).

[0056] In some examples, the report sending module 124 generates a measurement report based on the configuration message, the identification code and the key parameters, and periodically sends the measurement report to the cell base station 13. Specifically, after the positioning message measurement module 123 completes the measurement, the key parameters and the identification code can be sent to the report sending module 124. The report sending module 124 generates a measurement report based on the measurement report rule information of the configuration message. The report sending module 124 sends the measurement report to the cell base station 13 based on a preset period. In some examples, the measurement report may not include the key parameters and the identification code. In other examples, the measurement report may include the key parameters and the identification code. Among them, the key parameters and the identification code may be a pair. That is, the key parameters and the identification code may correspond to the same beacon positioning device 11. In other words, the positioning message receiving module 122 only receives one positioning message and obtains the identification code based on the positioning message. The positioning message receiving module 122 only sends one identification code to the positioning message measurement module 123. The positioning message measurement module 123 only measures one key parameter and binds the key parameter to the received identification code. The positioning message measurement module 123 sends the pair of key parameters and identification codes to the report sending module 124. In other examples, the measurement report may include multiple pairs of key parameters and identification codes. Thus, it is convenient for the subsequent cell base station 13 to obtain the position of the terminal device 12 based on the identification code and key parameters in the measurement report and the position information of each beacon positioning device 11 within the coverage range of the cell base station 13.

[0057] In some examples, the terminal device 12 can be a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. In some examples, the terminal device 12 can use a 5G network.

[0058] Figure 6 A block diagram of a cell base station 13 of an indoor positioning system 1 based on a 5G network involved in the present disclosure is shown.

[0059] In this embodiment, as described above, the indoor positioning system 1 may include a cell base station 13. In some examples, the cell base station 13 has a preset coverage range.

[0060] In some examples, the cell base station 13 has the distinguishing features, identification codes and geographic location information of each beacon positioning device 11 within its coverage. This facilitates the subsequent cell base station 13 to determine the specific location of the terminal device 12 through a preset location determination method based on the geographic location information of each beacon positioning device 11 and the measurement report periodically sent by the terminal device 12.

[0061] In some examples, such as Figure 6 As shown, the cell base station 13 may include a configuration message sending module 131 and a measurement report receiving module 132 .

[0062] In some examples, if the terminal device 12 establishes a connection with the cell base station 13 , the configuration message sending module 131 may send a configuration message to the terminal device 12 .

[0063] In some examples, the configuration message may include distinguishing features and identification codes of each beacon positioning device 11 within the coverage area of ​​the cell base station 13 .

[0064] In other examples, the terminal device 12 can be configured based on the configuration message. In this case, the terminal device 12 can have the functions of the positioning message receiving module 122, the positioning message measuring module 123 and the report sending module 124. Specifically, after being configured through the configuration message, the terminal device 12 can receive and measure the positioning message sent by the beacon positioning device 11 at a preset time interval. In addition, after being configured based on the configuration message, the terminal device 12 can determine the type of key parameters of the measured positioning message. After being configured based on the configuration message, the terminal device 12 can send a positioning message measurement report at a preset time interval. After being configured based on the configuration message, the terminal device 12 can determine the content that the measurement report sent needs to include, that is, determine that the measurement report needs to include the key parameters of the positioning message and the identification code of the beacon positioning device 11.

[0065] In some examples, the cell base station 13 may establish a connection with the terminal device 12 and configure the terminal device 12 via the RRC protocol.

[0066] In some examples, the measurement report receiving module 132 is used to receive measurement reports periodically sent by the terminal device 12. Based on the measurement report and the theorem position information of each beacon positioning device 11 within the coverage range of the cell base station 13, the measurement report receiving module 132 determines the specific location of the terminal device 12 by a preset positioning method.

[0067] For example, the measurement report receiving module 132 receives the measurement report sent by the terminal device 12. The measurement report includes multiple pairs of identification codes of the beacon positioning device 11 and the signal receiving power RSRP of the positioning message corresponding to the identification code measured by the terminal device 12. In addition, the cell base station 13 has the transmission power of each beacon positioning device 11. In this case, the cell base station 13 can obtain the transmission power of the beacon positioning device 11 corresponding to the identification code through the identification code. The cell base station 13 obtains the path loss of the positioning message based on the transmission power and signal receiving power corresponding to the identification code. The path loss can satisfy: path loss = transmission power - signal receiving power. The coverage range of the beacon positioning device 11 is small, so the impact of the environment on the path loss is small. The path loss is directly related to the distance between the beacon positioning device 11 and the terminal device 12. Therefore, the distance between the beacon positioning device 11 and the terminal device 12 can be obtained through the path loss. By obtaining the distance between multiple beacon positioning devices 11 and the terminal device 12, and then based on the geographical location information of each beacon positioning device 11, the cell base station 13 can obtain the specific location of the terminal device 12.

[0068] In some examples, the cell base station 13 may be a base station (gNR) in 5G.

[0069] Figure 7 A schematic diagram of the processing flow of the cell base station 13 of the indoor positioning system 1 based on the 5G network involved in the present disclosure is shown.

[0070] In some examples, such as Figure 7 As shown, the processing flow of the cell base station 13 may include establishing a connection (step S71), completing configuration (step S72), receiving a measurement report (step S73), determining a positioning method (step S74) and obtaining a position (step S75).

[0071] In step S71, the cell base station 13 establishes a connection with the terminal device 12. After the cell base station 13 establishes a connection with the terminal device 12, the cell base station 13 may start to provide communication services for the terminal device 12.

[0072] In step S72, the cell base station 13 and the terminal device 12 may establish a connection through the RRC protocol. After the connection is established, the configuration message sending module 131 may send a configuration message to the terminal device 12 through the RRC protocol. Specifically, the cell base station 13 sends an RRC reconfiguration message (RRCReconfiguration message) to the terminal device 12. The RRCReconfiguration message includes a MeasurementConfig information field.

[0073] In some examples, the MeasurementConfig information field may include measurement object information. Specifically, the MeasurementConfig information field may include the distinguishing features and identification codes of each beacon positioning device 11 within the coverage of the cell base station 13. In some examples, the MeasurementConfig information field may also include the type of positioning message and the type of key parameters that the terminal device 12 needs to measure. In some examples, the MeasurementConfig information field may also include the time interval for the positioning message measurement module 123 to measure the positioning message, that is, the period for measuring the positioning message.

[0074] In some examples, the MeasurementConfig information field may include measurement report rule information. Based on the measurement report rule information, the report sending module 124 determines the content that the measurement report to be sent needs to include, that is, determines that the measurement report to be sent needs to include an identification code and key parameters. In some examples, the MeasurementConfig information field may also include the time interval for the report sending module 124 to send the measurement report, that is, the period for sending the measurement report.

[0075] In some examples, the terminal device 12 receives a configuration message sent by the cell base station 13 and completes the configuration based on the configuration information. After completing the configuration, the terminal device 12 may send a configuration completion message to the cell base station 13. Specifically, the terminal device 12 sends an RRC reconfiguration completion message (RRCReconfigurationComplete message) to the cell base station 13.

[0076] In step S73, the measurement report receiving module 132 may receive the positioning message measurement report periodically sent by the terminal device 12, and parse the measurement report to obtain the identification code and key parameters. In some examples, the measurement report may not include the identification code and key parameters. In other examples, the measurement report may include only one pair of identification codes and key parameters. In other examples, the measurement report may include multiple pairs of identification codes and key parameters.

[0077] In step S74, if there is no identification code and key parameters in the measurement report, there is no beacon positioning device 11 near the terminal device 12. The terminal device 12 cannot receive the positioning message sent by the beacon positioning device 11, that is, the terminal device 12 cannot obtain the identification code and key parameters. In this case, the measurement report receiving module 132 uses the position of the cell base station 13 or any position within the coverage range of the cell base station 13 as the position of the terminal device 12.

[0078] If the measurement report includes only one pair of identification codes and key parameters, there is only one beacon positioning device 11 near the terminal device 12. In this case, the measurement report receiving module 132 determines the beacon positioning device 11 near the terminal device 12 through the identification code in the measurement report. The measurement report receiving module 132 uses the position of the beacon positioning device 11 or any position within the coverage range of the beacon positioning device 11 as the position of the terminal device 12.

[0079] If the measurement report includes multiple pairs of identification codes and key parameters, there are multiple beacon positioning devices 11 near the terminal device 12. In this case, the measurement report receiving module 132 determines the multiple beacon positioning devices 11 near the terminal device 12 through the multiple identification codes in the measurement report. The measurement report receiving module 132 determines the distances between the terminal device 12 and the multiple beacon positioning devices 11 nearby through the multiple key parameters in the measurement report. Finally, the measurement report receiving module 132 determines the location of the terminal device 12 based on the distances obtained above.

[0080] In step S75, the location information of the terminal device 12 is obtained. The measurement report receiving module 132 obtains the location information of the terminal device 12 based on the positioning method determined in step S74. In some examples, the cell base station 13 can send the acquired location information to the program in the cell base station 13 that needs to obtain the location of the terminal device 12. When the cell base station 13 completes step S75, it will continue to implement step S73. That is, the measurement report receiving module 132 will continue to receive the measurement report sent by the terminal device 12 and continuously update the location information of the terminal device 12. When the terminal device 12 is disconnected from the cell base station 13, the cell base station 13 will no longer continue to implement step S73 and directly end the entire processing flow.

[0081] Figure 8 An interactive schematic diagram of the 5G network-based indoor positioning system 1 involved in the present disclosure is shown.

[0082] In some examples, such as Figure 8 As shown, the interaction of the indoor positioning system 1 may include the following steps: establishing a connection (step S81), sending an RRC reconfiguration message (step S82), sending an RRC reconfiguration completion message (step S83), sending a positioning message (step S84) and sending a measurement report (step S85).

[0083] In step S81, the cell base station 13 may establish a connection with the terminal device 12. In some examples, the cell base station 13 may establish a connection with the terminal device 12 via an RRC protocol.

[0084] In step S82, the configuration message sending module 131 sends an RRC reconfiguration message to the terminal device 12. In some examples, as described above, the RRC reconfiguration message may include a MeasurementConfig information field. The MeasurementConfig information field may include measurement object information and measurement report rule information.

[0085] In step S83, the terminal device 12 sends an RRC reconfiguration completion message to the cell base station 13. When the terminal device 12 receives the RRC reconfiguration message sent by the cell base station 13, the terminal device 12 can complete the configuration based on the RRC reconfiguration message. After the terminal device 12 completes the configuration, it can send an RRC reconfiguration completion message to the cell base station 13. When the cell base station 13 receives the RRC reconfiguration completion message sent by the terminal device 12, the measurement report receiving module 132 will start to receive the measurement report sent by the report sending module 124.

[0086] In step S84, the beacon positioning device 11 periodically sends a positioning message. In some examples, as described above, after the terminal device 12 sends the RRC reconfiguration completion message to the cell base station 13, it will periodically receive and measure the positioning message sent by the beacon positioning device 11 based on the RRC reconfiguration message. In some examples, as described above, the terminal device 12 can generate a measurement report based on the RRC reconfiguration message.

[0087] Step S85, the terminal device 12 periodically sends a measurement report to the cell base station 13. In some examples, the report sending module 124 can send the measurement report to the cell base station 13 at a preset time interval based on the RRC reconfiguration message. In some examples, as described above, the cell base station 13 can determine a method for locating the terminal device 12 based on the content of the measurement report. The cell base station 13 obtains the specific location of the terminal device 12 based on the determined positioning method.

[0088] The present disclosure relates to an indoor positioning method based on a 5G network. The indoor positioning method based on a 5G network involved in the present disclosure may be referred to as an indoor positioning method. The indoor positioning method involved in the present disclosure is used to locate a terminal device 12 in a 5G scenario. The indoor positioning method involved in the present disclosure has a high positioning accuracy. Even in a complex environment with a large number of obstructions, the indoor positioning method can still maintain a high positioning accuracy.

[0089] Fig. 9 A flow chart of the indoor positioning method 9 based on the 5G network involved in the present disclosure is shown.

[0090] In some examples, such as Fig. 9As shown, the indoor positioning method 9 may include the following steps: completing configuration (step S91), receiving and measuring positioning messages (step S92), generating and sending measurement reports (step S93) and obtaining the terminal device location (step S94).

[0091] In step S91, the cell base station 13 sends a configuration message to the terminal device 12, and the terminal device 12 completes the configuration based on the configuration information. For details, please refer to the configuration message sending module 131 and the configuration message receiving module 121 described above.

[0092] In step S92, the terminal device 12 periodically receives the positioning message sent by the beacon positioning device 11 within the coverage of the cell base station 13, obtains the distinguishing feature of the beacon positioning device 11, obtains the identification code of the beacon positioning device 11 that sends the positioning message based on the distinguishing feature, and measures the key parameters of the positioning message. For details, please refer to the above-mentioned message sending module 111, positioning message receiving module 122 and positioning message measuring module 123.

[0093] In step S93, the terminal device 12 generates a measurement report based on the identification code, key parameters and configuration message, and periodically sends the measurement report to the cell base station 13. For details, please refer to the above-mentioned report sending module 124.

[0094] In step S94, the cell base station 13 receives the measurement report sent by the terminal device 12, and obtains the location of the terminal device 12 based on the positioning message measurement report and the location information of each beacon positioning base station within the coverage of the cell base station 13. For details, please refer to the above-mentioned measurement report receiving module 132.

[0095] Although the present disclosure is specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the present disclosure in any form. Those skilled in the art may modify and change the present disclosure as needed without departing from the essential spirit and scope of the present disclosure, and these modifications and changes all fall within the protection scope of the present disclosure.

Claims

1. A beacon positioning device based on a 5G network is a device used in an indoor positioning system, characterized in that: The indoor positioning system comprises a plurality of the beacon positioning devices, a terminal device and a cell base station, the terminal device having a configuration message including an identification code and a distinguishing feature of the beacon positioning device sent by the cell base station, the beacon positioning device does not provide communication services and is deployed within the coverage of the cell base station in one of the following ways: independently deployed, deployed in a BBU and deployed in an RRU, and the bandwidth, size and transmission power of the beacon positioning device are smaller than those of the cell base station; The beacon positioning device includes a message sending module and a message feature selection module; The message sending module is configured to periodically send a positioning message to the terminal device, the positioning message having the distinguishing feature, the distinguishing feature being used to distinguish different beacon positioning devices, if the terminal device receives the positioning message based on the configuration information, the terminal device obtains the distinguishing feature of the positioning message, obtains the identification code of the beacon positioning device that sends the positioning message based on the distinguishing feature of the positioning message, measures the key parameters of the positioning message based on the configuration message, and then generates a measurement report including the key parameters and the identification code, if the cell base station receives the measurement report, the cell base station obtains the position of the terminal device based on the measurement report; The message feature selection module is configured to adjust the distinguishing features of the positioning message sent by the message sending module.

2. The beacon positioning device according to claim 1, characterized in that: The key parameters of the measurement report are used to obtain the distance between the multiple beacon positioning devices and the terminal device, and the distance is used to determine the position of the terminal device.

3. The beacon positioning device according to claim 1, characterized in that: The distinguishing feature includes at least one of a time domain feature, a frequency domain feature, a PCI, a transmission power and a scrambling code.

4. The beacon positioning device according to claim 1, characterized in that: The key parameter is at least one of signal reception strength and signal reception power.

5. The beacon positioning device according to claim 1, characterized in that: The beacon positioning device is also deployed in a cellular structure within the coverage of the cell base station.

6. The beacon positioning device according to claim 1, characterized in that: The coverage range of the cell base station is smaller than the coverage range of multiple beacon positioning devices within the coverage range of the cell base station after being superimposed.

7. The beacon positioning device according to claim 1, characterized in that: The positioning message is one of SSB or CSI-RS.

8. The beacon positioning device according to claim 1, characterized in that: The measurement report includes multiple pairs of identification codes of the beacon positioning device and the signal received power RSRP of the positioning message corresponding to the identification code measured by the terminal device.

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