Dynamic Protection Frame Contouring for Collocated Wireless Radios
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Solution Overview
Problem
Conventional techniques for handling activity of collocated wireless radios are limited in efficiently utilizing shared transmission media and providing sufficient interference isolation, as protection frames like CTS-to-Self frames often exceed the activity duration of collocated Bluetooth radios, resulting in wasted usage of the medium.
Innovation Solution
The implementation of dynamically determined protection frame numbers and durations, based on interference and power parameters, allows for precise contouring of protection frames to the activity of collocated radios, reducing waste and enhancing medium usage efficiency by transmitting these frames in an overlapping and daisy-chained manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protection frames (CTS-to-Self) are used to prevent interference between collocated wireless radios, then interference isolation is improved, but transmission medium usage efficiency deteriorates because protection frames often exceed the activity duration of collocated Bluetooth radios
Solution Approach 1:
The patent implements dynamic determination of protection frame parameters (number and duration) based on real-time activity detection of collocated radios. The system continuously monitors Bluetooth radio activity and adjusts Wi-Fi protection frame characteristics accordingly, transitioning from static to dynamic control to match actual interference conditions and optimize medium utilization.
Solution Approach 2:
The system changes key parameters of protection frames including duration, number of frames, and timing based on detected Bluetooth activity patterns. By dynamically adjusting these parameters rather than using fixed protection intervals, the system reduces wasted medium usage while maintaining sufficient interference protection for Bluetooth communications.
2Device complexity
If fixed-duration protection frames are used, then implementation simplicity is improved, but medium usage efficiency deteriorates due to inability to contour protection to actual radio activity duration
Solution Approach 1:
The patent implements a feedback mechanism where the system detects Bluetooth radio activity and uses this information to dynamically adjust protection frame parameters. The feedback loop continuously monitors actual interference conditions and adjusts protection duration and timing to match real activity patterns, optimizing medium usage based on actual system state.
Solution Approach 2:
The system performs preliminary detection of Bluetooth activity patterns and uses this information to pre-calculate optimal protection frame parameters before transmitting Wi-Fi data. By anticipating interference needs based on detected activity, the system can precisely contour protection frames to actual requirements rather than using conservative fixed durations.
Data Source
AI summary
Systems, methods, and devices improve medium usage of wireless devices. Methods include determining, using one or more processors, multiple protection frames should be used for a first wireless radio and a second wireless radio based, at least in part, on an interference parameter, wherein the first wireless radio and the second wireless radio are collocated in a same wireless device. Methods also include determining, using the one or more processors, one or more transmission parameters associated at least one of the wireless radios, the one or more transmission parameters representing a first duty cycle of the first wireless radio and a second duty cycle of the second wireless radio. Methods further include determining, using the one or more processors, a number of protection frames and a protection frame duration based, at least in part, on the one or more transmission parameters.