Non-Primary Channel Utilization in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems, particularly those adhering to IEEE 802.11 standards, face inefficiencies in bandwidth utilization due to the inability to effectively switch from busy primary channels to idle secondary channels, leading to suboptimal data transfer rates and network performance.
Innovation Solution
Implementing a protocol that automatically selects non-primary channels for communication by detecting occupation on primary channels through methods like energy detection and clear channel assessment, allowing devices to switch to secondary channels without requiring primary channel communication, thereby enhancing bandwidth utilization and reducing communication overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices communicate only on primary channels according to IEEE 802.11 standards, then compatibility with legacy devices is maintained, but bandwidth utilization efficiency deteriorates when primary channels are busy
Solution Approach 1:
The patent segments the communication channels into primary channels (for legacy compatibility and control) and secondary channels (for high-speed data transfer). This segmentation allows devices to maintain communication on primary channels while utilizing secondary channels for data transmission, thereby resolving the contradiction between legacy compatibility and bandwidth efficiency
Solution Approach 2:
The patent extends communication from a single-dimensional primary channel to multi-dimensional channel usage by introducing secondary channels. Devices can operate on primary channels for compatibility while simultaneously utilizing secondary channels for enhanced throughput, effectively adding another dimension to the communication space
2Productivity
If devices switch to secondary channels when primary channels are busy, then data transfer rates improve, but communication overhead increases due to channel switching requirements
Solution Approach 1:
The patent performs preliminary actions by pre-negotiating secondary channel availability during the association phase. Capability indication fields are exchanged beforehand to establish which secondary channels can be used, eliminating the need for complex real-time channel negotiation and reducing communication overhead during data transmission
Solution Approach 2:
The patent introduces capability indication fields as intermediaries that carry channel availability information during association. These fields act as mediators between devices, pre-establishing the rules for secondary channel usage and simplifying subsequent communication without requiring continuous overhead
3Productivity
If automatic channel selection is implemented, then bandwidth utilization improves, but protocol complexity increases
Solution Approach 1:
The patent implements self-service by enabling devices to autonomously detect primary channel occupancy and automatically select appropriate secondary channels for communication. The capability indication fields and detection mechanisms allow devices to make independent channel selection decisions without requiring complex centralized coordination, thereby improving bandwidth utilization while limiting protocol complexity growth
Data Source
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AI summary
A first device includes at least one processor configured to communicate with the second device using a primary channel, detect occupation on the primary channel by a third device, and communicate with the second device using a secondary channel in response to the occupation by the third device. The secondary channel is chosen from a set of channels. The set of channels being determined at least partially in response to information or parameters exchanged during association of the first device and the second device.