Mobile Terminal Satellite Search Using 3D Line-of-Sight Mapping
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Solution Overview
Problem
Current satellite search methods for mobile terminals are costly, consume high power, and require large antenna spaces, making them unsuitable for integration within mobile devices.
Innovation Solution
A satellite search method that determines a target area with a direct line of sight using location and 3D map information, allowing the mobile terminal to adjust its pose for optimal satellite communication without external antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external devices or large antennas are used for satellite search, then satellite search capability is achieved, but device cost, power consumption, and size increase
Solution Approach 1:
The patent extracts the satellite search function from external dedicated devices and integrates it into the mobile terminal's existing antenna system. By using the mobile terminal's built-in antenna for both cellular communication and satellite search, the need for separate external satellite search devices is eliminated, reducing device complexity and cost while maintaining satellite search capability
Solution Approach 2:
The patent makes the mobile terminal's antenna serve multiple functions: it acts as both a cellular communication antenna and a satellite search antenna. This multi-functionality eliminates the need for dedicated satellite search antennas or external devices, thereby reducing device size, cost, and power consumption while achieving satellite search capability
2Reliability
If antenna is placed outside mobile terminal or occupies large space inside, then satellite search is enabled, but device size and cost increase
Solution Approach 1:
The mobile terminal's existing antenna is designed to perform dual functions: cellular communication and satellite search. By making the antenna universal, the patent eliminates the need for additional dedicated satellite antennas, thereby saving device space and reducing manufacturing cost while enabling satellite search functionality
Solution Approach 2:
The patent merges the satellite search function with the existing cellular communication antenna system. By combining these functions into a single antenna structure, the patent avoids the need for separate antenna components, reducing overall device size and complexity while achieving the desired satellite search capability
3Reliability
If traditional satellite search method is used, then satellite search capability is achieved, but power consumption is high
Solution Approach 1:
The patent performs preliminary actions by using the mobile terminal's existing location information and 3D map data to predict and determine the target area where satellite signal can be received, before actually conducting the satellite search. This preliminary planning allows the device to focus the satellite search operation on specific directions or areas, reducing the time and power required for exhaustive satellite search while maintaining search capability
Solution Approach 2:
The patent introduces 3D map information and location data as intermediary elements that mediate between the mobile terminal and the satellite search process. By using these intermediaries to pre-determine the target area and guide the satellite search, the system avoids random or exhaustive search methods, thereby reducing power consumption while achieving reliable satellite connection
Data Source
AI summary
A satellite search method is applied to a mobile terminal. The satellite search method includes determining, based on location information of the mobile terminal, location information of an available satellite, and three-dimensional (3D) map information, whether a direct line of sight between the mobile terminal and the available satellite is blocked by an obstacle, and determining location information of a target area based on the 3D map information when the direct line of sight is blocked by the obstacle, where the target area includes a direct line of sight between the mobile terminal and the available satellite.