Non-Bluetooth Frequency Hopping in Shared Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The scarcity of frequency spectrum resources in wireless communication systems leads to interference among devices sharing the same band, particularly between non-Bluetooth and Bluetooth devices, necessitating a method to minimize or avoid interference in shared spectrum usage.
Innovation Solution
A method and device that scan for frequency hopping communications by Bluetooth devices, determine their hopping sequences, and establish a wireless connection using a different protocol with a secondary frequency hopping sequence to avoid interference, allowing non-Bluetooth devices to communicate effectively in the same band without conflicting with Bluetooth devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices share the same frequency band, then frequency spectrum utilization is improved, but interference between devices increases
Solution Approach 1:
The frequency band is segmented into multiple channels, and the system further segments the communication approach by implementing two distinct frequency hopping sequences: a first sequence for Bluetooth devices and a second sequence for non-Bluetooth devices. This segmentation allows simultaneous operation of different device types in the same frequency band while minimizing mutual interference.
Solution Approach 2:
The system employs dynamic frequency hopping where the frequency allocation is not static but changes over time according to predetermined sequences. Bluetooth devices hop according to a first frequency hopping sequence while non-Bluetooth devices use a second frequency hopping sequence, creating dynamic temporal separation that reduces interference while maintaining high spectrum utilization.
2Productivity
If non-Bluetooth devices use the same frequency hopping sequence as Bluetooth devices, then frequency hopping efficiency is improved, but interference from Bluetooth devices increases
Solution Approach 1:
Different local qualities (frequency hopping sequences) are assigned to different device types. Bluetooth devices operate with a first frequency hopping sequence characterized by specific hopping patterns and timing, while non-Bluetooth devices use a second frequency hopping sequence with different characteristics. This local differentiation allows each device type to maintain optimal frequency hopping efficiency for its protocol while avoiding interference with the other.
Solution Approach 2:
Instead of having all devices use the same frequency hopping sequence (conventional approach), the system inverts the approach by assigning different sequences to different device types. This inversion creates temporal and spectral separation where non-Bluetooth devices intentionally hop to frequencies that complement rather than conflict with Bluetooth device hopping patterns.
Data Source
AI summary
A non-Bluetooth device operates in a same frequency band as Bluetooth devices by employing a method of intelligent frequency hopping. The method includes: scanning a frequency band for frequency hopping communications in the frequency band by one or more Bluetooth communication devices communicating according to a Bluetooth communication protocol; determining a first frequency hopping sequence utilized by the one or more Bluetooth communication devices according to the Bluetooth communication protocol; determining a second frequency hopping sequence within the frequency band to avoid interference from the frequency hopping communications by the one or more Bluetooth communication devices; and establishing a wireless communication connection between two non-Bluetooth devices, the wireless communication connection operating in the frequency band according to a second wireless communication protocol different than the Bluetooth communication protocol, and using the second frequency hopping sequence.