Mobile RF Mapping System for Building Coverage Analysis
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Solution Overview
Problem
Current methods for mapping radio frequency (RF) environments in buildings and structures are inefficient and inaccurate, leading to poor RF coverage and increased costs due to manual data collection and lack of understanding of RF interference and attenuation caused by structural elements.
Innovation Solution
A mobile mapping system equipped with a location detection element, RF instrument, and optical scanner that collects RSSI data and generates an RF fingerprint of the environment, allowing for the adjustment of RF components and improved RF planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual RF mapping by human operators is used, then flexibility and adaptability are maintained, but measurement precision and productivity deteriorate
Solution Approach 1:
The patent replaces manual mechanical operations (human operators walking and recording) with an automated mobile mapping system that uses GPS for location tracking, RF instruments for signal measurement, and processors for data mapping. This substitution eliminates human error in data collection while maintaining continuous measurement capability, thereby improving both precision and productivity simultaneously.
Solution Approach 2:
The mobile mapping system is designed to autonomously collect RF data, track its own position via GPS, process the collected data, and generate RF environment maps without requiring human intervention at each measurement point. The system self-manages the entire mapping process, from data acquisition to analysis, which dramatically improves productivity while maintaining consistent measurement precision.
2Reliability
If additional antennas are installed to improve RF coverage, then reliability improves, but device complexity and cost increase
Solution Approach 1:
The patent performs RF environment mapping and analysis before finalizing the antenna system design. By using the mobile mapping system to identify specific areas with poor RF coverage, the design team can plan antenna placements in advance, ensuring optimal coverage without over-provisioning. This preliminary characterization allows for a streamlined antenna system that achieves reliability without unnecessary complexity.
Solution Approach 2:
The RF mapping process identifies specific locations within the building where signal attenuation occurs due to structural elements. Rather than uniformly increasing antenna density throughout the entire facility, the system enables targeted antenna placement only in areas where it is actually needed, based on the mapped RF fingerprint. This localized approach improves reliability where required while minimizing overall system complexity.
3Reliability
If comprehensive RF environment characterization is performed, then reliability and measurement precision improve, but loss of time and productivity worsen
Solution Approach 1:
The mobile mapping system continuously collects RF data as it moves through the environment, rather than requiring stop-and-measure procedures. The GPS tracker continuously records position information, and the RF instrument continuously measures signal strength, creating an unbroken data stream that is processed into a comprehensive RF map. This continuous operation dramatically reduces the time required for thorough RF characterization.
Solution Approach 2:
The automated data collection and processing system replaces time-consuming manual operations. The processor automatically correlates RF measurements with GPS location data, generates the RF fingerprint map, and identifies coverage gaps without human intervention. This automation reduces the time required for comprehensive RF analysis while maintaining high measurement precision and reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides accurate and efficient RF mapping, enabling optimal RF performance and cost reduction by identifying areas requiring additional antennas and confirming RF thresholds, ensuring reliable coverage for critical users like first responders.
Implementation Method 1
an antenna coupled to the moveable unit; a radio frequency (RF) instrument coupled to the moveable unit, wherein the RF instrument collects data from one or more locations within the environment using the antenna
Implementation Method 2
a light detection and ranging (LIDAR) device that takes three-dimensional samples of the environment
Data Source
AI summary
Systems and methods of radio frequency data mapping are provided. An exemplary method includes moving a mobile mapping system through the environment, the mobile mapping system comprising a location detection element and a radio frequency (RF) instrument which receives data from an antenna of the mobile mapping system; collecting data from the RF instrument at one or more collection locations within the environment, the collected data including received signal strength indicator (RSSI) data; mapping the collected data at least in part based on data received from the location detection element and the RF instrument to form an RF fingerprint of the environment; and using the mapped data to confirm an anticipated environmental RF fingerprint associated with the environment, adjust one or more RF components associated with the environment, or both.