Bluetooth Channel Grouping to Avoid Wi-Fi Interference
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Solution Overview
Problem
Conventional Bluetooth apparatuses experience unnecessary connection delays due to complex calculations and processes like channel quality value calculation and frequency hopping, which do not effectively consider channel structure and occupancy characteristics when minimizing interference with Wi-Fi signals.
Innovation Solution
Divide Bluetooth channels into multiple groups based on frequency band structure and occupancy characteristics, selecting channels that do not overlap with Wi-Fi channels in use, thereby avoiding interference and reducing calculation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel quality value calculation and frequency hopping method are used to minimize interference, then interference between Bluetooth and Wi-Fi signals is reduced, but calculation complexity increases and connection delay occurs
Solution Approach 1:
The patent divides Bluetooth channels into multiple groups (first group, second group, third group) based on their frequency band characteristics and overlap relationships with Wi-Fi channels. This segmentation allows the system to select an entire group of channels that are guaranteed to be free from Wi-Fi interference, avoiding the need for complex per-channel quality calculations and frequency hopping algorithms.
2Reliability
If channel quality value calculation and frequency hopping method are used to minimize interference, then interference between Bluetooth and Wi-Fi signals is reduced, but connection delay increases
Solution Approach 1:
The patent performs preliminary classification of Bluetooth channels into groups based on their frequency band structure and potential overlap with Wi-Fi channels before actual connection establishment. By pre-identifying which channel groups are free from Wi-Fi interference, the system eliminates the need for time-consuming quality measurements and frequency hopping during the connection process, significantly reducing connection delay.
3Productivity
If Bluetooth channels are divided into multiple groups based on frequency band structure, then channel assignment efficiency is improved, but device complexity increases
Solution Approach 1:
The patent utilizes the inherent frequency band parameters of Bluetooth and Wi-Fi channels to define fixed groups based on overlap relationships. By changing the approach from dynamic quality-based selection to static parameter-based grouping, the system achieves efficient channel assignment through simple group selection rather than complex real-time calculations, balancing productivity improvement with acceptable device complexity.
Data Source
AI summary
Bluetooth apparatus includes a control unit and a Bluetooth communication unit. The control unit divides Bluetooth channels into divided groups including a first group, a second group, and a third group and selects one from among the divided groups. The Bluetooth communication unit uses channels included in the selected divided group, in which the selected divided group does not include a frequency band of a Wi-Fi channel in use.