Indoor Drive Test Reporting Using Bluetooth and WiFi Positioning
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Solution Overview
Problem
Conventional Minimization of Drive Tests (MDT) technology is challenged in indoor scenarios due to GPS positioning inaccuracy, which hinders effective network optimization and user experience.
Innovation Solution
A method and device for reporting drive test information using UE with wireless short-distance communication functions, detecting and reporting related information of other devices, such as BT and WIFI devices, to determine indoor network coverage problems, allowing for accurate signal quality assessment and coverage enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based positioning is used for MDT in outdoor scenarios, then positioning accuracy is improved, but the system becomes inapplicable in indoor scenarios where GPS does not work
Solution Approach 1:
The patent introduces Bluetooth and WIFI devices as intermediary positioning references indoors. Instead of directly using GPS satellites (which don't work indoors), the system uses locally available Bluetooth and WIFI devices as mediators to establish positioning relationships, enabling MDT functionality in indoor environments where traditional GPS fails
Solution Approach 2:
The patent makes the positioning system universal by enabling it to work in both outdoor and indoor scenarios. The UE can switch between GPS-based positioning outdoors and Bluetooth/WIFI-based positioning indoors, making the MDT system adaptable to multiple environments rather than being limited to outdoor GPS-only operation
2Reliability
If conventional drive test methods are used, then network coverage can be tested, but heavy human resource, material resource and fund investments are required
Solution Approach 1:
The patent enables UEs to automatically perform drive test measurements and reporting without requiring professional drive test instruments or expert operators. Regular mobile phones autonomously collect network measurement data, Bluetooth/WIFI positioning data, and automatically report to the network side, making the system self-serving and eliminating the need for specialized equipment and expert human resources
Solution Approach 2:
The patent uses measurement data from regular UEs as a substitute for data collected by expensive professional drive test instruments. By copying the measurement functionality to ordinary mobile phones, the system achieves the same network coverage testing capability without requiring physical drive test equipment, thereby reducing material resource investment
3Measurement precision
If MDT technology is applied to indoor scenarios using Bluetooth and WIFI devices, then positioning capability indoors is improved, but the device complexity increases
Solution Approach 1:
The patent leverages the fact that modern UEs already possess Bluetooth and WIFI capabilities for other purposes. By making these existing components serve the additional function of positioning and MDT measurements, the patent avoids adding dedicated hardware, thereby minimizing the increase in device complexity while still achieving indoor positioning capability
Data Source
AI summary
A drive test information reporting method is performed by user equipment (UE) indoors, the UE being a device with a wireless short-distance communication function. The method includes: detecting related information of another wireless short-distance communication device; recording and storing the related information of the another wireless short-distance communication device and corresponding detection time points; recording and storing network signal quality at each detection time point; and reporting drive test information to a base station at a preset reporting moment, the drive test information including the related information of the another wireless short-distance communication device, the corresponding detection time points and the network signal quality at each detection time point.