Bluetooth Audio Broadcast Scheduling for Low-Latency Slave Feedback
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Solution Overview
Problem
Existing Bluetooth technologies face challenges in efficiently transmitting audio data in short-range wireless communication systems, particularly in managing connections and data transfer between devices with low delay and maintaining regular data packet intervals.
Innovation Solution
A method and device for transmitting audio data using a broadcast scheme for master devices and a unicast scheme for user input data, with time durations allocated for transmission and reception, allowing for efficient data transfer and synchronization among multiple slave devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Bluetooth broadcast scheme is used for audio data transmission, then data transfer rate is improved, but transmission delay increases
Solution Approach 1:
The transmission time is divided into multiple time durations, with at least one time duration dedicated to broadcast transmission of audio data and another time duration dedicated to unicast transmission of control signals. This segmentation allows both transmission modes to occur without interfering with each other, achieving high data transfer rates while maintaining low transmission delay.
2Productivity
If multiple slave devices transmit data simultaneously, then system productivity is improved, but data collision and interference increase
Solution Approach 1:
The transmission opportunity is segmented into different time durations assigned to different slave devices. Each slave device is allocated a specific time duration for transmitting control signals to the master device, preventing simultaneous transmissions and eliminating data collisions while maintaining high system throughput.
Solution Approach 2:
Time durations are periodically allocated to multiple slave devices in a cyclic manner. Each slave device transmits control signals during its assigned periodic time window, ensuring reliable transmission while allowing all slave devices to communicate efficiently with the master device over time.
3Ease of operation
If connection management procedures are simplified, then ease of operation is improved, but transmission reliability deteriorates
Solution Approach 1:
Slave devices automatically transmit control signals during their allocated time durations without requiring complex manual connection management. The master device receives these control signals and autonomously adjusts transmission parameters, simplifying operation while maintaining reliable connections through automatic timing and coordination.
Data Source
AI summary
A method of transmitting audio data in a short-range wireless communication system, and a device therefor are provided. More specifically, a method of transmitting, by a master device, audio data in a short-range wireless communication system comprises transmitting, to at least one first slave device, the audio data based on a broadcast scheme; and receiving, from at least one second slave device, data generated based on a user input based on a unicast scheme, wherein (i) a transmission of the audio data and (ii) a reception of the data generated based on the user input are performed based on at least one time duration periodically allocated for (i) the transmission of the audio data and (ii) the reception of the data generated based on the user input, and wherein each of the at least one time duration includes (i) a first time duration for the transmission of the audio data and (ii) a second time duration for the reception of the data generated based on the user input.