Wireless Station Location-Based Switching for Maritime and Public Networks
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Solution Overview
Problem
Existing wireless communication devices for ships require complex operations to switch between different frequency bands and communication standards, complicating their use in maritime and public network communications.
Innovation Solution
A wireless station that automatically selects between maritime VHF and public network communication modes based on geographical location, using a position determining circuit to switch between frequency bands and standards without the need for manual frequency-specific push-to-talk switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual frequency-specific push-to-talk switches are used to switch between different frequency bands and communication standards, then communication functionality in multiple modes is achieved, but operational complexity increases
Solution Approach 1:
The wireless station automatically determines its geographical location using position determining circuitry and autonomously selects the appropriate telecommunication mode (maritime VHF or public network) based on whether it is located within a predetermined geographical area. This self-service mechanism eliminates the need for manual frequency-specific push-to-talk switches, thereby maintaining multi-mode communication functionality while significantly reducing operational complexity
Solution Approach 2:
The system performs preliminary actions by determining the wireless station's location and pre-selecting the appropriate telecommunication mode before communication is initiated. The position determining circuitry continuously monitors location, and the mode selecting circuitry is ready to switch modes instantaneously when the station enters or exits the predetermined geographical area, eliminating the need for manual switching during operation
2Ease of operation
If automatic location-based mode selection is implemented, then operational complexity is reduced, but device complexity increases due to position determining and mode selecting circuitry
Solution Approach 1:
The position determining circuitry serves multiple functions: it determines the wireless station's location for mode selection, and can potentially provide location information for other navigation or safety functions. The mode selecting circuitry universally handles both maritime VHF and public network communication modes, making the system adaptable to different communication requirements without requiring separate dedicated switching mechanisms for each mode
Solution Approach 2:
The position determining circuitry acts as an intermediary between the wireless station's physical location and the communication mode selection. It translates geographical position into actionable information that the mode selecting circuitry can use to automatically choose the appropriate telecommunication mode, thereby simplifying the overall control architecture despite the added components
Data Source
AI summary
A wireless station includes a switching instruction acceptor, a position determiner, a mode selector, a signal processing circuit, and a communicator. The position determiner determines, with respect to at least one area that indicates a geographical range associated with one of telecommunication modes of the wireless station, whether or not the wireless station is located within one of the areas. When the switching instruction acceptor accepts an instruction of switching to a transmission mode, the mode selector selects a first telecommunication mode of an area within which the wireless station is determined to be located or a second telecommunication mode in a case where the wireless station is not located within any of the areas. The signal processing circuit generates, from an input signal, transmission data matching a telecommunication mode selected by the mode selector.