Bluetooth ACL Role Switching for Wi-Fi Coexistence Bottlenecks
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Solution Overview
Problem
Wi-Fi and Bluetooth operations on the same 2.4 GHz band in terminal devices lead to interference, resulting in reduced data transmission rates and network stalling due to shared air interface resources.
Innovation Solution
A method for monitoring a link that involves determining preset parameters to switch roles between terminal devices, reducing Bluetooth time-sharing ratios, and optimizing data transmission rates by requesting role switches based on specific conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile phone continuously monitors the Bluetooth ACL to synchronize messages from the Bluetooth headset, then the Bluetooth time-sharing ratio per unit time increases, but the Wi-Fi data transmission rate decreases due to occupied air interface resources
Solution Approach 1:
The patent dynamically adjusts the Bluetooth monitoring strategy by switching between continuous monitoring and periodic monitoring modes. The network management module determines the appropriate monitoring mode based on current network conditions and service requirements, allowing the system to adaptively balance Bluetooth connection reliability with Wi-Fi data transmission performance.
Solution Approach 2:
The patent changes the monitoring parameter (time-sharing ratio) from a fixed high value to a dynamically adjustable value. By modifying the monitoring frequency and time-sharing ratio based on network conditions, the system optimizes the balance between maintaining Bluetooth connection reliability and ensuring Wi-Fi data transmission rate.
2Adaptability or versatility
If Wi-Fi and Bluetooth operate simultaneously on the 2.4 GHz band, then both services can function concurrently, but mutual interference occurs reducing overall performance
Solution Approach 1:
The patent implements periodic action by using time-division multiplexing for Wi-Fi and Bluetooth operations. The system alternates between Wi-Fi transmission periods and Bluetooth monitoring periods, allowing both services to function concurrently while minimizing mutual interference through structured time separation.
Solution Approach 2:
The system dynamically adjusts the time-sharing ratios and operational parameters of both Wi-Fi and Bluetooth based on current network conditions, service priorities, and interference levels. This dynamic adjustment allows concurrent operation while optimizing overall data transmission performance.
Data Source
AI summary
This application provides a method for monitoring a link and a terminal device, so as to increase a data transmission rate of a Wi-Fi service and/or Bluetooth service in a Wi-Fi and Bluetooth coexistence scenario with the same operating band. The method is applied to a first terminal device, and includes: establishing a Bluetooth ACL between the first terminal device and a second terminal device; determining a preset parameter of the first terminal device and/or the second terminal device; determining, based on the preset parameter, whether to perform role switch; sending a first request message to the second terminal device when it is determined to perform role switch, where the first request message is used to request role switch between the first terminal device and the second terminal device.