Multi-mode Wireless Device Location Service Selection
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Solution Overview
Problem
Current location determination technologies, such as GPS, face limitations in accuracy and cost, especially indoors, and dual-mode cellular mobile terminals require integration of emerging Wi-Fi based location determination systems with existing cellular technologies for enhanced performance.
Innovation Solution
A method and system for a multi-mode wireless mobile device to selectively access and rank multiple location service networks, including Wi-Fi, cellular, and GPS, to provide location data by prioritizing the highest ranked service and switching to backup services when primary networks are unavailable, ensuring reliable and cost-effective location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based location determination is used, then location data can be obtained, but accuracy deteriorates indoors and operational costs increase
Solution Approach 1:
The patent combines multiple location determination technologies (GPS, Wi-Fi, cellular) into a unified location determination system. The multi-mode mobile device integrates different communication modules that can access multiple location services, allowing the system to merge the strengths of each technology to achieve accurate indoor and outdoor location determination.
Solution Approach 2:
The location determination system is designed with multi-functionality to operate across different environments and network types. The device can universally access location services through multiple networks (cellular, Wi-Fi, WiMAX) and switch between different location determination technologies based on environmental conditions, ensuring continuous accurate operation both indoors and outdoors.
2Reliability
If multiple location service networks are integrated, then service reliability improves, but device complexity increases
Solution Approach 1:
The patent implements dynamic network selection and service switching mechanisms. The location determination system dynamically chooses which network and location service to use based on real-time conditions such as network availability, signal strength, and service responsiveness. This dynamic approach allows the system to adapt to changing environments without requiring complex manual configuration.
Solution Approach 2:
The multi-mode mobile device incorporates self-service capabilities through automated network selection and failover mechanisms. The device automatically monitors the status of multiple location services and networks, and autonomously switches to alternative services when primary services fail or become unresponsive, eliminating the need for manual intervention and reducing operational complexity.
3Measurement precision
If Wi-Fi based location service is used, then accuracy and cost improve, but network availability becomes limited
Solution Approach 1:
The patent applies local quality by optimizing location determination methods for specific environments. The system preferentially uses Wi-Fi based location services in indoor environments where Wi-Fi networks are available and provide superior accuracy. In outdoor or remote areas where Wi-Fi is unavailable, the system automatically transitions to cellular-based location services, ensuring appropriate service quality for each local context.
Data Source
AI summary
In part, the invention relates to a method for generating location data using a wireless mobile device, the wireless mobile device adapted to communicate with a plurality of location services, each service associated with one of a plurality of networks. In one embodiment, the method comprises the steps of: selecting a first location service from the plurality of location services; transmitting a first request for location data to the first location service; if the first request fails, selecting a second location service from the plurality of location services; and receiving location data from one of the first and the second location services.