Low-Power Bluetooth Master Scheduling for Multi-Slave Stability
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Solution Overview
Problem
Existing low-power Bluetooth connection methods face instability when connecting multiple slave apparatuses to a single master apparatus, as simultaneous signal transmission can lead to disconnection of already connected or connecting slave apparatuses.
Innovation Solution
A method that schedules signal transmission using a time schedule table, where each signal is assigned to specific time groups, preventing simultaneous transmission by setting registration and general connection periods as multiples of a unit time, and performing modular operations to arrange these times, ensuring distinct time points for each step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple slave apparatuses are connected to one master apparatus using low-power Bluetooth, then the connectivity capability is improved, but signal interference occurs causing disconnection
Solution Approach 1:
The patent divides the connection process into distinct time segments using a time schedule table. Each slave apparatus is assigned specific time slots for different connection steps (scan, connection request, registration connection, general connection), preventing signal overlap and interference while maintaining multiple simultaneous connections.
Solution Approach 2:
The patent implements periodic signal transmission at scheduled intervals defined by scan periods, connection periods, registration periods, and general periods. This periodic structure ensures that signals from different slave apparatuses are transmitted at non-overlapping times, eliminating interference while maintaining continuous connectivity.
2Speed
If signals are transmitted simultaneously during connection process, then the connection speed is improved, but signal interference causes disconnection
Solution Approach 1:
The patent performs preliminary scheduling of signal transmission times before actual connection establishment. The time schedule table pre-assigns specific time slots for each connection step, ensuring that signals are transmitted at predetermined non-conflicting times, thus preventing interference while maintaining efficient connection speed.
Solution Approach 2:
The patent dynamically adjusts signal transmission timing based on the connection state and apparatus type. Different slave apparatuses are assigned different time slots and periods, allowing the system to adaptively manage signal transmission to avoid interference while maintaining optimal connection speed for each device.
Data Source
AI summary
Disclosed is a method of connecting a plurality of apparatuses using low-power Bluetooth. A plurality of slave apparatuses are connected to a master apparatus, and various signals or times are assigned to a time schedule table. In other words, a scan period, a window scanning time, a registration period, a registration signal, a general period, and a general signal are assigned to the time schedule table without being assigned to the same position of the time schedule table. More specifically, the slave apparatuses are connected to the master apparatus through a scheme of preventing start time points to which the signals are assigned from being assigned to the same position.