Mobile Station Navigation Mode Switching
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Solution Overview
Problem
Existing navigation systems in mobile communication networks cannot provide simultaneous network connection and navigation features during voice or data calls, and navigation assistance is suspended when the user goes outside network coverage or receives a call.
Innovation Solution
The mobile station switches from server-based navigation to on-board mode, using local resources for navigation, allowing it to continue providing directional assistance during calls and without network coverage by utilizing stand-alone GPS and stored map data, and recalculating routes as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the mobile station uses server-based navigation with network connection, then navigation accuracy and route calculation capability are improved, but the navigation session is suspended when a voice or data call occurs
Solution Approach 1:
The navigation application is segmented into two operational modes: server-based mode for high-precision navigation when network is available, and on-board mode for continuous navigation when network is unavailable or during calls. The system automatically switches between segments based on network status and call state, ensuring both precision and continuity.
Solution Approach 2:
The system changes the operational parameter of navigation mode based on network availability and call state. When network connection is lost or a call begins, the parameter switches from server-based to on-board mode, maintaining navigation functionality throughout the transition.
2Loss of information
If the mobile station maintains network connection for server-based navigation, then real-time route updates are improved, but simultaneous voice or data calls cannot occur
Solution Approach 1:
The mobile station downloads and stores map data and route information in advance during network availability. This preliminary action enables the on-board mode to function independently during calls, providing route updates without requiring real-time network connection.
Solution Approach 2:
The on-board navigation application acts as an intermediary that can operate independently when network connection is unavailable during calls. It uses locally stored data to provide navigation services, bridging the gap between network-based and standalone navigation.
3Reliability
If the mobile station switches to on-board mode during calls, then navigation continuity is improved, but real-time route recalculation capability is reduced
Solution Approach 1:
The route recalculation functionality is extracted from the server and implemented locally in the on-board navigation application. This enables the mobile station to perform basic route recalculation independently during calls, maintaining navigation continuity without requiring server intervention.
Data Source
AI summary
A mobile station, and related methods, provide navigational assistance. The mobile station executes a local navigation application and can transition between network assisted navigation and stand-alone navigation that utilizes the local navigation application. Various events can cause the transition between the operational states.