Base Station Position Estimation and Reliability Update
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Solution Overview
Problem
The precision of position estimation based on GPS is affected by erroneous base station position information, especially with the spread of mobile base stations, which complicates accurate location determination in various environments.
Innovation Solution
An information processing apparatus that includes a base station position estimating unit, an estimation result evaluating unit, and an information management unit to progressively update base station position information using signal strength measurements, determining reliability indices, and adjusting stored indices based on differences between estimated and stored positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base station position information is updated frequently to improve reliability, then position estimation reliability improves, but system complexity increases due to multiple evaluation and update mechanisms
Solution Approach 1:
The system pre-establishes evaluation criteria and update rules for base station position information. The information management unit is configured with predetermined conditions for when to update position information, allowing the system to automatically evaluate and update without complex real-time decision-making processes.
Solution Approach 2:
The system implements a feedback mechanism where the information management unit continuously monitors the reliability of base station position information and automatically updates it when predetermined conditions are met. This closed-loop approach ensures reliability improvement through systematic evaluation and update based on feedback from the position estimation process.
2Measurement precision
If base station position information is updated using estimated values, then position estimation precision improves, but information accuracy may deteriorate due to propagation of estimation errors
Solution Approach 1:
The information management unit automatically evaluates and updates base station position information using predetermined criteria without requiring external intervention. The system uses its own accumulated data and estimation results to self-correct and improve position information reliability, reducing the risk of introducing external errors.
Solution Approach 2:
The system pre-configures update rules and evaluation thresholds to ensure that only position information meeting specific reliability criteria is updated. This preliminary setup prevents erroneous updates by establishing guardrails before the actual update process occurs.
Data Source
AI summary
An information processing apparatus includes a reception unit receiving measurement information on signal strength from a wireless terminal that measures the signal strength of wireless signals transmitted from base stations, a base station information storage unit storing, for each base station, base station position information and an index showing the reliability of the base station position information, a base station position estimating unit estimating position information of a base station based on the received measurement information, an estimation result evaluating unit calculating an index showing the reliability of the estimated position information of the base station, and an information management unit operable when the calculated index shows higher reliability than the index stored in the base station information storage unit, to update the stored base station position information using the position information estimated by the base station position estimating unit.