Network Location Prediction Using Historical MDT Data
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Solution Overview
Problem
Current Minimization of Drive Tests (MDT) technologies in LTE systems rely solely on GPS for location information, failing to utilize historical measurement data for location prediction and are limited by the requirement for GPS support in terminal devices, which restricts coverage analysis and location measurement capabilities.
Innovation Solution
A location prediction method and apparatus that involves a location service network element receiving MDT measurement information from a base station, determining predicted location information using historical data, and sending it back to the base station, enabling location prediction even without GPS support in terminal devices and enhancing coverage analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GPS is used for location measurement, then location information can be obtained, but terminal devices without GPS support or with GPS disabled cannot provide location data
Solution Approach 1:
The patent introduces network-side measurement data as an intermediary to obtain location information. Instead of relying solely on terminal GPS, the network measures signal parameters (RSSI, timing information) and uses these as intermediaries to determine location, enabling terminals without GPS to still provide location data.
Solution Approach 2:
The patent replaces the mechanical/electronic GPS system with a network-based measurement system. By substituting GPS hardware dependency with network signal measurement (RSSI, timing), the system eliminates the requirement for GPS support in terminal devices while maintaining location measurement capability.
2Reliability
If historical GPS location information is used only for coverage analysis, then coverage blind areas can be identified, but location prediction capability is lost
Solution Approach 1:
The patent makes historical location measurement data serve multiple functions: both coverage analysis and location prediction. By treating the same historical data as useful for both purposes, the system achieves multi-functionality, eliminating the need to choose between coverage analysis accuracy and location prediction capability.
Solution Approach 2:
The patent performs preliminary location measurement and data collection during normal network operation, storing historical data before it is needed for prediction. This preliminary action enables future location prediction without requiring additional real-time measurements, allowing the system to maintain both coverage analysis and prediction capabilities.
3Device complexity
If MDT measurement report includes only history location information, then implementation is simple, but location prediction for future time points cannot be achieved
Solution Approach 1:
The patent performs preliminary data collection and processing during normal MDT operation, storing historical measurement data before prediction is needed. This preliminary action enables the network to generate predictions without requiring complex real-time processing, maintaining simplicity while adding prediction functionality.
Solution Approach 2:
The patent segments the location measurement process into two parts: historical data collection (simple MDT report) and future prediction (network-side computation). By separating data collection from prediction generation, the system maintains simple report structure while enabling sophisticated prediction functionality through network-side processing.
Data Source
AI summary
Disclosed are a location prediction method and apparatus, a network element, a base station and a non-transitory computer-readable storage medium. The position prediction method may include: receiving, by a location service network element, a Minimization of Drive Tests (MIDT) measurement information message sent by a base station, wherein the location service network element is a separate network element or a network element inside the base station, and the MDT measurement information message carries history location measurement information of at least one user equipment (UE); determining, by the location service network element, predicted location information of the at least one UE for a first time point or a first time period according to the history location measurement information of the at least one UE; and sending, by the location service network element, the predicted location information to the base station.