LED Lighting Synchronization via Mobile Network Time Slots
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Solution Overview
Problem
Conventional visible light communication systems using LED lighting face synchronization issues between adjacent lightings, leading to data collisions in overlapping areas, and existing solutions like power line communication systems are complex and costly to implement.
Innovation Solution
The method involves using a mobile communication network to synchronize adjacent LED lightings by receiving a synchronization channel, analyzing it to extract synchronization signals, and selecting specific time slots based on unique IDs for data transmission, preventing collisions through a mobile communication reception unit, information processing control unit, and LED driving circuit within the LED lighting apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LED lightings transmit data using randomly selected time slots or ID-based time slots, then data transmission can be performed, but data collision occurs in overlapping areas where adjacent LED lightings transmit simultaneously
Solution Approach 1:
The system uses feedback from mobile communication base stations to provide synchronization signals to LED lightings. The base station transmits synchronization signals that LED lightings receive and use to coordinate their time slot selections, preventing simultaneous transmissions in overlapping areas through centralized coordination
Solution Approach 2:
A mobile communication base station serves as an intermediary between LED lightings, receiving synchronization requests and distributing synchronized time slot information. This mediator enables coordinated time slot selection across multiple LED lightings without direct communication between them
2Reliability
If power line communication is used to synchronize LED lightings, then synchronization can be achieved, but system complexity and implementation cost increase significantly
Solution Approach 1:
The mobile communication base station performs multiple functions: it provides both mobile communication services and synchronization signal distribution for LED lighting coordination. This multi-functionality eliminates the need for dedicated synchronization infrastructure, reducing system complexity
Solution Approach 2:
LED lightings autonomously select time slots based on synchronization signals received from mobile communication base stations, without requiring centralized control systems or complex coordination protocols. Each lighting independently makes scheduling decisions based on received synchronization information
Data Source
AI summary
An apparatus and a method for providing synchronized data by using visible light communication includes, receiving a synchronization channel from a mobile communication base station using a specific mobile communication network, by a Light Emitting Diode (LED) lighting; analyzing the received synchronization channel, and extracting a synchronization signal for synchronizing the LED lighting with at least one LED lighting adjacent to the LED lighting; selecting a specific time slot of the synchronization signal based on IDentifications (IDs) of the LED lightings; and including a data frame of the LED lighting in the specific time slot, and transmitting the specific time slot, which includes the data frame of the LED lighting, to a mobile terminal.