Multiband Bluetooth Adaptive Spectral Map
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Solution Overview
Problem
Bluetooth communication in the 2.4 GHz frequency band experiences congestion and interference due to coexistence with other protocols, degrading performance and user experience in wireless personal area networks (WPANs).
Innovation Solution
An electronic device with an integrated circuit that determines an adaptive spectral map across different spectral bands, allowing communication to switch between the 2.4 GHz and 5 GHz bands based on predefined conditions, such as communication performance metrics and device capabilities, to reduce interference and improve coexistence with other protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Bluetooth communication uses the 2.4 GHz frequency band, then short-distance wireless communication is achieved, but congestion and interference occur due to coexistence with other protocols
Solution Approach 1:
The patent extends Bluetooth communication from a single frequency dimension (2.4 GHz) to multiple frequency dimensions (2.4 GHz, 5 GHz, and 60 GHz bands), allowing the system to transition between different spectral domains to avoid interference while maintaining communication functionality
Solution Approach 2:
The system dynamically changes the frequency parameter by selecting different spectral bands (2.4 GHz, 5 GHz, 60 GHz) based on environmental conditions and interference levels, transforming the fixed-frequency Bluetooth protocol into a flexible multiband system
2Object-affected harmful factors
If frequency hopping across spectral bands is implemented, then interference is reduced, but device complexity increases
Solution Approach 1:
The integrated circuit is designed with multi-functionality to handle multiple spectral bands (2.4 GHz, 5 GHz, 60 GHz) and different communication protocols (Bluetooth Classic, Bluetooth Low Energy, Wi-Fi), reducing the need for separate dedicated hardware for each function
Solution Approach 2:
The system implements dynamic frequency band selection where the integrated circuit can adaptively switch between different spectral bands based on real-time interference conditions, connection requirements, and device capabilities, rather than using a static frequency assignment
3Productivity
If multiband communication is used, then communication performance is improved, but compatibility with legacy devices is reduced
Solution Approach 1:
The system dynamically adapts its operating frequency band based on the capabilities of the communicating devices. When a legacy device is detected, the system automatically restricts communication to the common 2.4 GHz band, while allowing access to 5 GHz and 60 GHz bands when both devices support multiband operation
Solution Approach 2:
The patent segments the Bluetooth device population into two groups: legacy devices that only support 2.4 GHz and multiband-capable devices that support 2.4 GHz, 5 GHz, and 60 GHz. This segmentation allows the system to apply different communication strategies for different device types, maintaining backward compatibility while enabling advanced functionality
Data Source
AI summary
An electronic device that communicates with a second electronic device using adaptive frequency hopping across different spectral bands is described. An integrated circuit in the electronic device includes processing logic that determines an adaptive spectral map that specifies channels across multiple spectral bands. During communication with a second electronic device that includes a second integrated circuit using a communication protocol (such as Bluetooth or Bluetooth Low Energy), the integrated circuit selects channels in the adaptive spectral map, where selection can be based on a predefined frequency-hopping sequence.