A method for map-enhanced closed space UWB base station network management and control

Abstract

The application provides a method for map-enhanced closed space UWB base station network management and control, which utilizes a high-precision map of a closed space, excavates the spatial correlation and service boundedness characteristics of a UWB base station in the closed space, realizes user-driven classified partition UWB base station network management, and completes UWB base station health monitoring and power self-adaptive regulation and control. On the one hand, the energy consumption of the UWB base station network is greatly reduced, and the efficiency of the UWB network operation is improved. The existing whole-network full-time operation PNT base station network management and control method is improved, and the power consumption of the base station network is minimized to 1 / number of base stations in the network through classified partition intelligent management and control. On the other hand, the UWB base station working state self-adaptive adjustment and health state auxiliary monitoring are realized, the deficiency that the base station power is set according to fixed experience value in the existing method is overcome, and a user-driven base station power self-adaptive regulation and control method is provided.

Description

A method for managing and controlling UWB base station networks in enclosed spaces using map augmentation Technical Field

[0001] This invention relates to the field of information network technology, and in particular to a method for managing and controlling a map-enhanced closed-space UWB base station network. Background Technology

[0002] UWB technology boasts high-precision ranging and strong resistance to multipath errors, making it widely used for positioning in enclosed spaces such as indoors and underground. Three or more UWB base stations form a continuously operating UWB base station network, providing continuous 3D positioning services to users within its coverage area. However, if the UWB base station network continues to operate 24 / 7 when there are no users in the enclosed space, base stations, network, and platform will become idle, resulting in resource waste. This problem of ineffective network and energy waste will become even more pronounced as the number of enclosed spaces within building complexes increases. Therefore, optimizing and managing UWB network operation and reducing its power consumption are key issues that need to be addressed.

[0003] Due to the complex environments of indoor and underground enclosed spaces, UWB base stations are susceptible to abnormal interference. UWB signals experience significant propagation errors in metallic environments, making monitoring and forecasting difficult. Therefore, when users utilize a UWB base station network, understanding the health status of the base stations is crucial. Consequently, rapidly generating UWB base station health status data and enabling UWB base station monitoring has become a research hotspot in UWB network monitoring technology.

[0004] To overcome the problems of high energy consumption of UWB base stations operating around the clock in complex building clusters, difficulty in monitoring the health status of UWB base stations in enclosed spaces, and insufficient adaptability of UWB base station regulation, a new method for managing and controlling UWB base stations with map enhancement is needed. Summary of the Invention

[0005] The purpose of this invention is to provide a method for managing and controlling UWB base station networks in map-enhanced enclosed spaces, thereby solving the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A method for managing and controlling a map-enhanced UWB base station network in a closed space includes the following steps:

[0008] S1. Obtain information on each UWB base station in the UWB base station network within the closed space to construct a UWB base station information model, and divide the UWB base stations into sentinel base stations and control base stations.

[0009] S2, Use high-precision maps to construct a UWB base station information table and obtain the mapping relationship between enclosed spaces and UWB base stations;

[0010] S3 uses high-precision maps to build a user information table and obtain the mapping relationship between enclosed spaces and users;

[0011] S4. Based on the sentinel base station or control base station observed by the user in real time, the closed space code of the sentinel base station or control base station is obtained by indexing according to the UWB base station information table, and the closed space code is assigned to the user.

[0012] S5: Based on the code of the closed space to which the user belongs, the user opens the user information table in the closed space, adds the user information to the user information table in the closed space, and performs user-driven UWB base station network management and classified and partitioned UWB base station network management for all UWB base stations in the closed space.

[0013] Preferably, the UWB base station information model in step S1 includes basic information and extended information. The basic information includes number, name, location coordinates, operating status and working parameters, etc., and the extended information includes the closed space code, reasonable distance range under the space, health status, service type and power control parameters, etc.

[0014] Preferably, step S2 specifically includes:

[0015] S21 divides the area into several closed spaces based on a high-precision map, assigns a code to each closed space, and configures one sentry-type UWB base station in each closed space;

[0016] S22, based on the closed space coding, update the closed space coding information of the base station in the extended information of all UWB base stations in each closed space, and summarize all UWB base stations in each closed space and fill them into the UWB base station information table corresponding to the closed space.

[0017] Preferably, the method for classifying and zoning UWB base stations in step S5 specifically includes the following steps:

[0018] S51. Periodically scan the user information table in the enclosed space to determine the number of users in the enclosed space. If the number of users is greater than 0, proceed to step S52; otherwise, proceed to step S53.

[0019] S52, turn on all control-type base stations in the enclosed space for user location services, and proceed to step S54;

[0020] S53, shut down all control-type base stations in the enclosed space, and proceed to step S54;

[0021] S54, clear the user information table in the enclosed space, return to step S4 to restart monitoring user observation information and the user information table.

[0022] Preferably, the UWB base station network management and control in step S5 includes: reading the observation distance and the distance range value in the base station information table, judging and updating the health status parameters of the base station information table; reading the observed signal strength and generating the base station power adjustment value.

[0023] Preferably, the step of reading the observation distance and the distance range value in the base station information table, and determining and updating the health status parameters of the base station information table, specifically includes:

[0024] For base station U, calculate the distances UA, UB, UC, UD, UE, UF, UG, and UH from base station U to the boundary point, and obtain the maximum distance US; based on the user's measured distance DS, perform the following judgments and health status settings:

[0025]

[0026] Where δ0 is the UWB ranging error.

[0027] Preferably, the observed signal strength is read to generate a base station power adjustment value. Specifically, if the available UWB signal strength value RSSI0 is -100dBm, all UWB base stations observed by the user are traversed. If the signal strength RSSI0 of the i-th observed base station is... i If the value is less than RSSI0, then calculate the power adjustment value dR:

[0028] dR = RSSI0 - RSSI i

[0029] Adjust the power of the UWB base station based on the power adjustment values ​​provided by users' actual measurements.

[0030] The beneficial effects of this invention are:

[0031] This invention provides a method for managing and controlling a UWB base station network in a closed space using map enhancement. This method utilizes a high-precision map of the closed space to uncover the spatial correlation and service boundedness characteristics of UWB base stations within the closed space, enabling user-driven, categorized, and partitioned UWB base station network management, and completing UWB base station health monitoring and adaptive power control. On one hand, it significantly reduces the energy consumption of the UWB base station network and improves the efficiency of UWB network operation. On the other hand, it improves upon existing full-network, all-time PNT base station network management and control methods, reducing base station network power consumption to a minimum of 1 / number of base stations in the network through intelligent categorized and partitioned management.

[0032] On the other hand, this method achieves adaptive adjustment of UWB base station operating status and auxiliary monitoring of health status, overcoming the shortcomings of existing methods that set base station power based on fixed empirical values. A user-driven adaptive base station power control method is proposed. Based on the difference between the actual user-observed signal strength and the design threshold, the output power adjustment value adaptively adjusts the base station power according to the actual situation. This overcomes the limitation of existing methods in monitoring the health status of sparse base station networks. It utilizes the boundedness characteristics of enclosed spaces to obtain a reasonable range for base station ranging, and determines and sets the base station health status by comparing the measured user distance values. Attached Figure Description

[0033] Figure 1 is a flowchart illustrating the map-enhanced closed-space UWB base station network management method provided in Example 1;

[0034] Figure 2 is a schematic diagram of the distance between base station U and the boundary of the enclosed space; Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Example

[0037] This embodiment provides a method for managing and controlling a map-enhanced UWB base station network in a closed space, as shown in Figure 1, including the following steps:

[0038] S1. Obtain information on each UWB base station in the UWB base station network within the closed space to construct a UWB base station information model, and divide the UWB base stations into sentinel base stations and control base stations.

[0039] S2, Use high-precision maps to construct a UWB base station information table and obtain the mapping relationship between enclosed spaces and UWB base stations;

[0040] S3 uses high-precision maps to build a user information table and obtain the mapping relationship between enclosed spaces and users;

[0041] S4. Based on the sentinel base station or control base station observed by the user in real time, the closed space code of the sentinel base station or control base station is obtained by indexing according to the UWB base station information table, and the closed space code is assigned to the user.

[0042] S5: Based on the code of the closed space to which the user belongs, the user opens the user information table in the closed space, adds the user information to the user information table in the closed space, and performs classified management and user-driven intelligent control of the base station network for all UWB base stations in the closed space.

[0043] The UWB base station information model used in this embodiment includes basic information and extended information. The basic information consists of commonly used UWB attribute values, while the extended information is generated by overlaying high-precision geographic information onto the basic UWB base station information, resulting in new spatial association information, service association information, status association information, control association information, etc. The extended UWB information model is shown in Table 1 below:

[0044] Table 1

[0045]

[0046]

[0047] The basic information of a UWB base station includes its ID, name, location coordinates, operating status, and working parameters. The ID serves as a unique identifier for the UWB base station within the UWB network, used to distinguish and retrieve UWB base station information. Typically, the UWB base station information table can be named using the UWB ID. The name is a description of the UWB base station's identity. The location coordinates are the three-dimensional coordinates of the UWB antenna. The operating status indicates whether the UWB is active or inactive; 0 indicates the base station is inactive, and 1 indicates it is active. Working parameters include the base station's transmit power, etc.

[0048] Extended information for UWB base stations includes their enclosed space code, reasonable distance range within that space, health status, service type, and power control parameters. The enclosed space code serves as the identifier for the corresponding enclosed space on the map. The reasonable distance range within that space represents the furthest coverage distance the base station can cover within its enclosed space, assisting users in assessing the base station's health status. The health status indicates whether the UWB base station is operating normally; 0 indicates normal, and 1 indicates abnormal. The service type displays the UWB base station's service settings; 0 indicates a sentinel-type base station, operating continuously; 1 indicates a control-type base station, with its operation managed by a control platform. Power control parameters are power adjustment values ​​used to control UWB transmission power.

[0049] In this embodiment, step S2 specifically includes:

[0050] S21 divides the area into several closed spaces based on a high-precision map, assigns a code to each closed space, and configures one sentry-type UWB base station in each closed space;

[0051] S22, update the enclosed space coding information of the base station in the extended information of all UWB base stations in each enclosed space, and summarize the UWB base stations in each enclosed space into the enclosed space UWB base station information table.

[0052] The base station information table is shown in Table 2:

[0053] Table 2

[0054]

[0055]

[0056] The user information table in step S3 is shown in Table 3:

[0057] Table 3

[0058] Serial Number Username Description 1 User1 ID User 1's identifier 2 User2 ID User 2's identifier 3 User3 ID User 3's identifier 4 ... surface

[0059] The method for classifying and zoning UWB base stations in step S5 specifically includes the following steps:

[0060] S51. Periodically scan the user information table in the enclosed space, for example, every ten minutes, to determine the number of users in the enclosed space. If the number of users in the enclosed space is greater than 0, proceed to step S52; otherwise, proceed to step S53.

[0061] S52, turn on all control-type base stations in the enclosed space for user location services, and proceed to step S54;

[0062] S53, shut down all control-type base stations in the enclosed space, and proceed to step S54;

[0063] S54, clear the user information table in the enclosed space, return to step S4 to restart monitoring user observation information and the user information table.

[0064] Step S52 specifically includes: opening the UWB base station user information table (Table 3) within the closed space according to the closed space code, obtaining all UWB base station IDs within the closed space, opening the base station information table (Table 1) of the base station according to the UWB base station ID, and activating the control type base station for user positioning service according to the UWB base station service type.

[0065] The intelligent management and control process of the base station network in step S5 specifically includes: reading the observation distance and the distance range value in the base station information table, judging and updating the health status parameters of the base station information table; reading the observed signal strength and generating base station power adjustment values.

[0066] The process of reading the observation distance and the distance range value in the base station information table, and then determining and updating the health status parameters of the base station information table is as follows:

[0067] Figure 2 shows the distribution scenario within the enclosed space. Using a high-precision map, the boundary points A, B, C, D, E, F, G, and H of the enclosed space can be obtained. The coordinates of boundary point A are (X... A ,Y A Z A B is the boundary point (X). B ,Y B Z B The coordinates of the UWB base station are (X... U ,Y U Z U ).

[0068] Based on the boundary point coordinates and the UWB base station coordinates, the distances UA and UB from the base station to the boundary point can be calculated:

[0069]

[0070] The calculations for other distances (UC, UD, UE, UF, UG, UH) are similar. The maximum observable distance (US) of the UWB base station within the enclosed space is calculated as follows:

[0071] US=Max(UA,UB,UC,UD,UE,UF,UG,UH) (2)

[0072] The UWB ranging error δ0 is 0.05m. Based on the user's measured distance DS, the following judgments and health status settings are made:

[0073]

[0074] The process of reading the observed signal strength and generating base station power adjustment values ​​includes the following steps:

[0075] If the available UWB signal strength value RSSI0 is -100dBm, iterate through all UWB base stations observed by the user. If the signal strength RSSI0 of the i-th observed base station is... i If it is less than RSSI0, then calculate the power adjustment value:

[0076] dR = RSSI0 - RSSI i (4)

[0077] Adjust the power of the UWB base station based on the power adjustment values ​​provided by users' actual measurements.

[0078] By adopting the above-disclosed technical solution of this invention, the following beneficial effects are obtained:

[0079] This invention provides a method for managing and controlling a UWB base station network in a closed space using map enhancement. This method utilizes a high-precision map of the closed space to uncover the spatial correlation and service boundedness characteristics of UWB base stations within the closed space, enabling user-driven, categorized, and partitioned UWB base station network management, and completing UWB base station health monitoring and adaptive power control. On one hand, it significantly reduces the energy consumption of the UWB base station network and improves the efficiency of UWB network operation. It improves upon existing full-time PNT base station network management methods, reducing base station power consumption to a minimum of 1 / number of base stations in the network through intelligent categorized and partitioned management. On the other hand, it achieves adaptive adjustment of UWB base station operating status and auxiliary health monitoring, overcoming the shortcomings of existing methods that set base station power based on fixed empirical values, and proposes a user-driven adaptive base station power control method. Based on the difference between the actual user-observed signal strength and the design threshold, the output power adjustment value adaptively adjusts the base station power according to the actual situation, overcoming the limitation of existing methods in monitoring the health status of sparse base station networks. It utilizes the boundedness characteristics of the closed space to obtain a reasonable range for base station ranging, and determines and sets the base station health status by comparing the measured user distance values.

[0080] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for managing and controlling a map-enhanced UWB base station network in a closed space, characterized in that, Includes the following steps: S1. Obtain information on each UWB base station in the UWB base station network within the enclosed space to construct a UWB base station information model, and classify the UWB base stations into sentinel base stations and control base stations; S2. Construct a UWB base station information table using a high-precision map to obtain the mapping relationship between the enclosed space and UWB base stations; S3. Construct a user information table using a high-precision map to obtain the mapping relationship between the enclosed space and users; S4. Based on the sentinel or control base stations observed by the user in real time, index the enclosed space code of the sentinel or control base station according to the UWB base station information table, and assign the enclosed space code to the user; S5. The user opens the user information table within the enclosed space according to the enclosed space code and adds the user information to the enclosed space. The user information table within the enclosed space is used to perform user-driven UWB base station network management and classification-based UWB base station network management for all UWB base stations within the enclosed space. The specific method for classifying and partitioning UWB base stations in step S5 includes the following steps: S51, periodically scan the user information table within the enclosed space to determine the number of users within the enclosed space. If the number of users is greater than 0, proceed to step S52; otherwise, proceed to step S53; S52, turn on all control-type base stations within the enclosed space for user location services, and proceed to step S54; S53, turn off all control-type base stations within the enclosed space, and proceed to step S54; S54, clear the user information table within the enclosed space, return to step S4, and restart monitoring user observation information and the user information table.

2. The method for managing and controlling a map-enhanced closed-space UWB base station network according to claim 1, characterized in that, The UWB base station information model in step S1 includes basic information and extended information. The basic information includes, but is not limited to, number, name, location coordinates, operating status and working parameters. The extended information includes, but is not limited to, the code of the enclosed space to which it belongs, the reasonable distance range under the space, health status, service type and power control parameters.

3. The method for managing and controlling a map-enhanced closed-space UWB base station network according to claim 1, characterized in that, Step S2 specifically includes: S21, dividing the high-precision map into several closed spaces, assigning a code to each closed space, and configuring one sentinel-type UWB base station in each closed space; S22, updating the closed space code information of the base station in the extended information of all UWB base stations in each closed space according to the closed space code, and summarizing all UWB base stations in each closed space and filling them into the UWB base station information table corresponding to the closed space.

4. The method for managing and controlling a map-enhanced closed-space UWB base station network according to claim 1, characterized in that, The UWB base station network management and control described in step S5 includes: reading the observation distance and the distance range value in the base station information table, judging and updating the health status parameters of the base station information table; reading the observed signal strength and generating the base station power adjustment value.

5. The method for managing and controlling a map-enhanced enclosed space UWB base station network according to claim 4, characterized in that, The process of reading the observed distance and the distance range value in the base station information table, and judging and updating the health status parameters of the base station information table, specifically includes: for base station U, calculating the distances UA, UB, UC, UD, UE, UF, UG, and UH from base station U to the boundary point, and obtaining the maximum distance US; based on the user's measured distance DS, performing the following judgments and health status settings: ;in, This represents the standard error of UWB ranging.

6. The method for managing and controlling a map-enhanced enclosed space UWB base station network according to claim 4, characterized in that, Read the observed signal strength and generate a base station power adjustment value, specifically: if the UWB available signal strength value... Given a value of -100dBm, iterate through all UWB base stations observed by the user. If the signal strength of the i-th observed base station is... Less than Then calculate the power adjustment value dR: Adjust the power of the UWB base station based on the power adjustment values ​​provided by users through actual measurements.

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