Quiet Wireless Enrolment for Low-Interference RF Pairing
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Solution Overview
Problem
Existing wireless devices in home and automotive environments experience interference and operational degradation due to high duty cycle transmissions, particularly in the 2.4 GHz ISM band, where multiple devices like Wi-Fi, Bluetooth, and Kleer transceivers coexist, leading to poor coexistence and operational issues.
Innovation Solution
Implementing a wireless media network with a source device that switches between active and quiet enrolment modes, using enrolment trigger packets and RSSI thresholds to filter false triggers and optimize power usage, allowing devices to operate in a power-down mode when not actively connected, thereby improving coexistence and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless devices use high duty cycle transmissions in the 2.4 GHz ISM band, then data transmission capability is improved, but interference with other wireless devices increases
Solution Approach 1:
The patent implements periodic action by alternating between active enrolment mode (transmitting enrolment packets) and quiet enrolment mode (listening for response packets). This periodic transmission pattern reduces the duty cycle compared to continuous transmission, allowing other wireless devices to operate with less interference while still achieving reliable data transmission when needed.
2Reliability
If wireless devices continuously transmit enrolment packets, then device connectivity is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by switching between active enrolment mode (transmitting packets) and quiet enrolment mode (listening only). This reduces power consumption significantly compared to continuous transmission, as the device can enter a lower power state during quiet periods while still maintaining connectivity through periodic active enrolment attempts.
Solution Approach 2:
The patent implements dynamics by making the enrolment mode adaptive - the device dynamically switches between active and quiet modes based on whether it needs to transmit or can listen for responses. This dynamic behavior optimizes the balance between connectivity reliability and power consumption, allowing the device to be more aggressive when needed and more conservative when possible.
3Area of stationary object
If multiple wireless devices operate simultaneously in the same frequency band, then wireless coverage is improved, but operational degradation occurs
Solution Approach 1:
The patent uses periodic action to stagger transmissions between multiple devices. By alternating between active and quiet enrolment modes, devices transmit less frequently and listen more often, reducing the probability of simultaneous transmissions that cause interference. This maintains wireless coverage while improving operational reliability in multi-device environments.
Data Source
AI summary
In a wireless media network a source device provides entertainment content to a sink device over a radio frequency (RF) wireless channel. The source device can go into a receive only quiet enrolment mode until activated by a sink device transmitting enrolment trigger packets or having a signal strength above a certain threshold, thereby improving coexistence with other wireless devices. The source device changes from the quiet enrolment mode to an active enrolment mode when activated by the sink device.