Wireless Channel Switching via TWT Scheduling Without Handshakes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional channel switching techniques in wireless communications involve handshakes at each switch, leading to increased overhead and reduced efficiency due to the inability to simultaneously communicate on multiple channels.
Innovation Solution
Negotiating a Target Wake Time (TWT) for each Device Under Test (DUT) and switching channels according to the negotiated TWTs to avoid overlapping wake intervals, thereby eliminating the need for handshakes during channel switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional channel switching techniques are used with handshakes at each switch, then channel switching can be performed, but overhead increases and efficiency decreases
Solution Approach 1:
The patent applies preliminary action by negotiating Target Wake Time (TWT) parameters in advance before channel switching occurs. The TWT negotiation establishes predetermined wake intervals and channel switching schedules beforehand, allowing the wireless device to automatically switch channels at the negotiated times without performing handshakes during the actual channel switch, thereby eliminating handshake overhead and improving channel switching efficiency
2Ease of operation
If channel switches are performed without negotiated TWT, then channel switching can occur, but wake intervals may overlap causing communication conflicts
Solution Approach 1:
The patent applies feedback by implementing a TWT negotiation mechanism where the first and second DUTs exchange TWT request and response messages to establish their wake intervals. This feedback loop allows each DUT to inform the other of its scheduled wake times, enabling the system to coordinate channel switching such that wake intervals do not overlap, thereby preventing communication conflicts while maintaining reliable operation
Data Source
AI summary
Embodiments of a device, a method, and a system for channel switching are disclosed. In an embodiment, the device includes a wireless network interface device implemented on one or more integrated circuits (ICs), where the wireless network interface device is configured to negotiate a Target Wake Time (TWT) of a first Device Under Test (DUT) (DUT1) and a TWT of a second DUT (DUT2), and switch channels between DUT1 and DUT2 according to the negotiated TWT of DUT1 and the negotiated TWT of DUT2.