Bluetooth BIS Transmission with Adaptive Bitrate and Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low energy (LE) electronic devices face challenges in securing reliability and efficiency in Bluetooth Core Version 5.2 or higher BIS data transmission due to resource wastage and high current consumption from mandatory retransmissions, especially when coexisting with WiFi or Bluetooth, and inability to adapt to varying environments.
Innovation Solution
Classifying BIS audio PDUs based on specific criteria to ensure reliability by using different bitrates and transmission powers, allowing for dynamic adjustment during data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mandatory retransmissions are used to ensure reliability of BIS data transmission, then transmission reliability is improved, but current consumption and resource wastage increase
Solution Approach 1:
The patent applies different bitrates and transmission powers to different BIS data packets based on their specific requirements. Critical data packets use higher transmission power and bitrate for reliable delivery, while non-critical packets use lower parameters to save energy. This local differentiation resolves the contradiction by avoiding uniform high-power transmission for all packets.
Solution Approach 2:
The system dynamically adjusts transmission parameters (bitrate and power) based on real-time conditions including packet importance, channel quality, and power availability. This dynamic adaptation allows the system to maintain reliability when needed while reducing power consumption during normal operation, resolving the static contradiction between reliability and energy use.
2Device complexity
If fixed bitrate and transmission power are used for BIS data transmission, then device complexity is reduced, but adaptability to varying environments deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of transmission parameters based on environmental conditions such as channel quality, interference levels, and power availability. The system transitions from fixed parameters to adaptive parameters, allowing it to respond to varying environments while maintaining manageable complexity through algorithmic control.
Solution Approach 2:
The system changes transmission parameters (bitrate and power) based on detected environmental conditions and data priorities. By modifying these parameters dynamically, the system achieves adaptability to different environments without requiring complete system redesign, resolving the contradiction between simplicity and adaptability.
3Ease of operation
If uniform transmission parameters are used for all BIS data, then ease of operation is improved, but sound quality and transmission efficiency deteriorate
Solution Approach 1:
The patent assigns different transmission parameters to different data packets based on their priority and importance. Critical audio data receives higher bitrate and power for better quality, while less critical data uses lower parameters. This local differentiation maintains operational simplicity through automated classification while improving overall sound quality and efficiency.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
According to an embodiment, an electronic device (101, 300) includes a communication circuit (190) and at least one processor (120) connected to the communication circuit (190). The at least one processor (120) may control to broadcast an advertising message including information about a bitrate used to transmit broadcast isochronous stream, BIS, data. The at least one processor (120) may control to broadcast, in a first ISO interval, one or more first BIS data of a first attribute. The at least one processor (120) may control to broadcast, in the first ISO interval, one or more second BIS data of a second attribute.