Dual Bluetooth IC Control for EDR Interference Avoidance
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Solution Overview
Problem
In dual Bluetooth (BT) architectures with a single integrated circuit (IC), the use of Enhanced Data Rate (EDR) technology by two sets of BT circuits leads to mutual interference, degrading signal reception quality and connectivity.
Innovation Solution
A dual BT architecture with a shared storage circuit or shared hardware circuit to manage the use of specific modulation technology, preventing simultaneous usage by both sets of BT circuits to avoid interference, by enabling or disabling the use of EDR technology based on the status of the other set's link establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If two sets of BT circuits simultaneously use EDR technology to transmit signals, then data transmission rate is improved, but mutual interference occurs and signal reception quality deteriorates
Solution Approach 1:
The patent implements periodic action by alternating the usage of EDR technology between two BT circuits based on link establishment status. When one circuit establishes a link, it uses EDR technology while the other circuit uses basic rate technology, and this status dynamically switches as links are established or disconnected. This periodic alternation prevents simultaneous EDR usage and mutual interference while maintaining high data transmission rates when possible.
2Productivity
If two sets of BT circuits use the same modulation technology simultaneously, then communication efficiency is improved, but connection quality between circuits and partners deteriorates
Solution Approach 1:
The patent applies local quality by allowing different modulation technologies to be used by different BT circuits simultaneously based on their local link establishment status. Each circuit independently determines its modulation mode (EDR or basic rate) according to whether it has an active link, creating localized quality differences that prevent global interference while maintaining communication efficiency for circuits that can operate independently.
Data Source
AI summary
A method for controlling the operation of a dual Bluetooth architecture of a single IC includes: after establishing a first link of a first Bluetooth circuit, performing a first group of steps; and after establishing a second link of a second Bluetooth circuit, performing a second group of steps. The first group of steps includes: determining whether the second link uses a modulation technique; when the second link uses the modulation technique, disabling the first Bluetooth circuit from using it; and when the second link does not use the modulation technique, enabling the first Bluetooth circuit to use it. The second group of steps includes: determining whether the first link uses the modulation technique; when the first link uses the modulation technique, disabling the second Bluetooth circuit from using it; and when the first link does not use the modulation technique, enabling the second Bluetooth circuit to use it.