Repeater-Based Area Messaging Using User Direction and Position
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Solution Overview
Problem
Existing methods fail to provide intuitive user notification in specific areas within a predetermined area, such as an airplane, without requiring prior registration, especially when users change frequently.
Innovation Solution
A wireless communication system comprising wireless communication terminals and a repeater that logically divide a work area into sub-areas, allowing users to designate a direction for message transmission, with the repeater determining the communication area based on user position and direction information, enabling message transmission to specific users within that area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If message transmission is enabled in a predetermined area without prior user registration, then ease of operation is improved, but reliability deteriorates due to inability to accurately identify specific users
Solution Approach 1:
The predetermined area is divided into multiple sub-areas, allowing the system to segment the communication target from a large area into smaller, more manageable regions. This enables more precise message delivery while maintaining ease of operation, as users can select specific sub-areas rather than registering individual users.
Solution Approach 2:
The repeater acts as an intermediary device that receives message transmission requests from wireless communication terminals, determines the appropriate communication area based on user position and direction information, and forwards messages to the correct sub-area. This mediator resolves the contradiction by handling the complex area determination logic centrally.
2Measurement precision
If the area is divided into multiple sub-areas for precise message transmission, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The repeater performs multiple functions including position information acquisition, direction information acquisition, communication area determination, and message forwarding. By consolidating these functions into a single multi-functional device, the system achieves precise area specification without proportionally increasing overall system complexity.
Solution Approach 2:
The repeater pre-acquires and stores position information of wireless communication terminals in the predetermined area before message transmission occurs. This preliminary action enables rapid and accurate determination of communication areas when messages need to be sent, reducing real-time processing complexity.
3Productivity
If user position and direction information are used to determine communication area, then productivity is improved, but loss of information increases due to additional data requirements
Solution Approach 1:
The system extracts only the essential information needed for area determination (position information and direction information) from the complete set of possible user data. By taking out only these critical elements, the system achieves efficient message delivery without managing excessive information.
Solution Approach 2:
The system acquires position information periodically and maintains updated location data for all terminals in the area. This partial redundancy of information ensures that when a message needs to be sent, the necessary data is already available, improving productivity while the information overhead remains manageable due to the periodic rather than continuous acquisition approach.
Data Source
AI summary
A wireless communication system, a repeater, and a wireless communication method capable of transmitting a message to another user in a specific area selected by a user are provided. The wireless communication system includes a plurality of wireless communication terminals and the repeater. The wireless communication terminal acquires an operation of a user, and transmits a message and direction information. The repeater determines a communication area based on the received information, and transmits a message to another wireless communication terminal worn by a user in the communication area.