Dual-Processor Wireless Information Management for Positioning
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Solution Overview
Problem
Existing electronic devices face challenges with power consumption and accuracy in GPS-based positioning, especially in urban areas with tall buildings, and cellular signal-based positioning is inefficient due to storage limitations and varying processing speeds.
Innovation Solution
An efficient database structure and information management method are implemented using a dual-processor system, where the first processor searches a local memory for wireless information and requests additional information from a second processor if needed, optimizing cellular signal-based positioning by efficiently managing data and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based positioning is used to obtain accurate location information, then positioning accuracy is improved, but power consumption increases making it unsuitable for long-term use
Solution Approach 1:
The patent divides the positioning system into two segments: GPS for high-accuracy positioning and cellular signal-based positioning for low-power operation. The device switches between these segments based on power availability and positioning requirements, allowing long-term operation without continuous GPS usage while maintaining acceptable positioning accuracy through the cellular segment.
Solution Approach 2:
The patent changes the operational parameters of cellular signal-based positioning by implementing a database structure that stores pre-calculated distance information and signal characteristics. This allows the system to perform positioning calculations using cellular signals with modified parameters that improve accuracy while consuming significantly less power than GPS.
2Use of energy by moving object
If cellular signal-based positioning is used to reduce power consumption, then power efficiency is improved, but positioning accuracy deteriorates due to signal fading and building obstructions
Solution Approach 1:
The patent implements preliminary action by pre-calculating and storing distance information, signal strength characteristics, and base station location data in a database during periods when GPS is available or when power is abundant. This pre-prepared data is then used during low-power operation to improve cellular positioning accuracy without requiring real-time complex calculations that would consume excessive power.
Solution Approach 2:
The patent introduces a database as an intermediary between the cellular signal reception and positioning calculation. This database stores pre-processed information about base stations, signal characteristics, and distance relationships, acting as a mediator that enhances the accuracy of cellular positioning by providing reference data that compensates for signal fading and building obstructions.
3Device complexity
If all wireless information is stored in a single memory to simplify access, then device complexity is reduced, but storage space requirements increase beyond available capacity
Solution Approach 1:
The patent segments the storage system into multiple memories with different capacities and access characteristics. The first memory stores frequently accessed wireless information for quick retrieval during positioning operations, while the second memory stores comprehensive wireless information including base station data and signal characteristics. This segmentation reduces the complexity of managing large datasets while fitting within available storage constraints.
Solution Approach 2:
The patent applies local quality by optimizing the storage format and content for each memory segment. The first memory stores condensed, frequently used information optimized for rapid access, while the second memory stores detailed comprehensive data. Each memory segment has tailored storage characteristics that match its specific access patterns and capacity constraints, improving overall system efficiency.
4Device complexity
If a single processor handles all information processing to simplify system architecture, then device complexity is reduced, but processing speed varies depending on information management efficiency
Solution Approach 1:
The patent segments the processing function into two processors with distinct roles: the first processor handles communication and controls the overall positioning process, while the second processor specializes in searching and retrieving wireless information from the database. This segmentation improves processing speed by allowing parallel operation and specialized optimization of each processor for its specific tasks.
Solution Approach 2:
The patent implements multi-functionality by designing the first processor to perform both communication functions and control functions, while the second processor handles both information searching and data retrieval. This universal design allows the system to maintain relatively simple processor architecture while achieving high processing speeds through efficient division of labor and parallel processing capabilities.
Data Source
AI summary
An electronic device is provided, and includes a communication interface and a first processor and a second processor. The first processor may be configured to receive first base station information from base station, search a first memory for first wireless information corresponding to the received first base station information, and when the first wireless information is not searched in the first memory, send a request for second wireless information corresponding to the first base station information to the second processor, and the second processor may be configured to search a second memory for the second wireless information based on the request for the second wireless information. Other various embodiments are also available.