Mobile Station Alert Area Switching for Accurate Emergency Broadcasts
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Solution Overview
Problem
In conventional wireless communication standards, emergency information distribution by moving stations is not appropriately performed due to their movement between different emergency information distribution areas, while fixed base stations statically belong to specific areas.
Innovation Solution
A communication control apparatus is provided with functional units to estimate the emergency information distribution area of a moving station, allowing it to appropriately distribute emergency information by switching between areas based on its location and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If moving stations are used to supplement fixed communication cells, then coverage area and mobility are improved, but emergency information distribution accuracy deteriorates due to movement between different emergency information distribution areas
Solution Approach 1:
The patent applies dynamics by making the emergency information distribution area of the moving station changeable based on its current location. The base station determines the moving station's position and dynamically updates its associated emergency information distribution area, allowing the system to adapt to the moving station's movement while maintaining accurate emergency information distribution.
Solution Approach 2:
The patent implements feedback through the base station continuously monitoring the moving station's location and using this information to determine the appropriate emergency information distribution area. This feedback mechanism ensures that the moving station always transmits emergency information for the correct area despite its movement.
2Speed
If moving stations move between different emergency information distribution areas, then mobility and coverage are improved, but the ability to appropriately perform emergency information distribution deteriorates
Solution Approach 1:
The patent applies preliminary action by having the base station proactively determine and update the moving station's emergency information distribution area based on its current location. This preliminary determination ensures that the moving station is always configured with the correct emergency information area before it moves to a new location, maintaining reliability throughout its movement.
3Measurement precision
If fixed base stations are used, then emergency information distribution accuracy is maintained, but coverage area and mobility are limited
Solution Approach 1:
The patent merges the advantages of fixed base stations (accurate emergency information distribution) with the advantages of moving stations (expanded coverage and mobility). The moving station inherits the ability to accurately distribute emergency information by having its emergency information distribution area dynamically determined based on its location, while simultaneously providing extended coverage and mobility.
Data Source
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AI summary
A communication control apparatus has at least one processor that performs: by an emergency information distribution area estimation unit, estimating an emergency information distribution area where a moving station capable of communicating with a communication device is located; and by an emergency information distribution control unit, having the moving station distribute emergency information for the estimated emergency information distribution area. The moving station is connectable to a fixed base station that statically belongs to a specific emergency information distribution area, and the emergency information distribution area estimation unit estimates that the moving station is located in the emergency information distribution area to which the fixed base station to which the moving station is connected belongs.