Electronic Device BIS Data Transmission With Adaptive Bitrate
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Solution Overview
Problem
Low energy (LE) electronic devices supporting Bluetooth Core Version 5.2 or higher face challenges in securing reliability and efficiency in broadcast isochronous stream (BIS) data transmission due to difficulties in accurately responding to environmental changes, leading to resource wastage and increased current consumption.
Innovation Solution
Classifying BIS audio PDUs based on specific criteria to ensure reliability by using different bitrates and transmission powers, allowing for dynamic adjustments in data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed bitrate and transmission power are used for BIS data transmission, then the transmission parameters are simple to manage, but the system cannot accurately respond to environmental changes leading to resource wastage and increased current consumption
Solution Approach 1:
The patent implements dynamic transmission parameters by classifying audio PDUs into different groups (first group with first bitrate/power, second group with second bitrate/power) and selectively applying different transmission configurations based on environmental conditions and data characteristics, enabling the system to adapt to changing conditions while managing energy consumption efficiently
Solution Approach 2:
The patent applies different transmission qualities to different parts of the data stream by classifying individual audio PDUs into different groups based on their characteristics and environmental conditions, allowing each PDU to be transmitted with appropriately optimized bitrate and power levels rather than using a uniform configuration for all data
2Reliability
If higher transmission power and bitrate are used for BIS data, then data transmission reliability is improved, but resource wastage increases
Solution Approach 1:
The patent changes transmission parameters (bitrate and power) based on PDU classification and environmental conditions by selecting from multiple predefined parameter sets (first bitrate/first power, second bitrate/second power), allowing the system to optimize the balance between reliability and energy consumption for each transmission based on actual needs
3Loss of energy
If dynamic adjustments in bitrate and transmission power are implemented, then resource efficiency is improved, but the complexity of transmission control increases
Solution Approach 1:
The patent segments the audio data stream into individual PDUs and further segments them into different groups (first group, second group) based on classification criteria, allowing different transmission strategies to be applied to different segments without requiring complex continuous adjustment mechanisms for the entire stream
Data Source
AI summary
According to an embodiment, electronic devices (101 and 300) each comprise a communication circuit (190) and at least one processor (120) connected to the communication circuit (190). The at least one processor (120) may perform control to broadcast an advertising message including information about a bit rate used to transmit broadcast isochronous stream (BIS) data. The at least one processor (120) may perform control to transmit at least one first BIS data of a first attribute in a first ISO interval. The at least one processor (120) may perform control to transmit at least one second BIS data of a second attribute in the first ISO interval.