ISM Band Interference Manager for In-Flight Entertainment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In-flight entertainment systems experience communication interference due to the high density of wireless transceivers operating in the ISM band, leading to degraded or intermittent service, as transceivers increase transmission power to compensate for interference, further exacerbating the issue.
Innovation Solution
An in-flight entertainment system with static Bluetooth transceivers and an ISM band communication interference manager that measures signal strength and controls transmission power levels to mitigate interference, identifying and reducing excessive interference from mobile transceivers, thereby maintaining communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transceivers increase transmission power level to respond to degradation of communication link quality, then communication reliability is improved, but signal noise floor increases and communication interference worsens
Solution Approach 1:
The system continuously monitors communication link quality and transmission power levels of multiple transceivers. When interference is detected, the manager sends feedback messages to specific transceivers instructing them to adjust their power levels, creating a closed-loop control system that dynamically optimizes communication quality while controlling noise floor
Solution Approach 2:
The system dynamically changes the transmission power level parameter of individual transceivers based on real-time interference conditions. Instead of uniformly increasing power across all transceivers, the manager selectively adjusts power levels of specific transceivers causing or experiencing interference, optimizing the overall system performance
2Adaptability or versatility
If multiple wireless transceivers operate simultaneously in high density, then service coverage is improved, but communication interference increases
Solution Approach 1:
The system applies different transmission power levels to different transceivers based on their local interference conditions. The manager identifies specific transceivers causing or experiencing interference and instructs only those transceivers to adjust their power levels, rather than uniformly controlling all transceivers in the system
Solution Approach 2:
The ISM band communication interference manager acts as an intermediary between transceivers, coordinating their operations to minimize interference. The manager receives interference reports from transceivers, processes the information, and sends coordination messages to adjust transceiver behavior, enabling high-density operation without excessive interference
Data Source
AI summary
An in-flight entertainment system includes a plurality of static transceivers and an ISM band communication interference manager. The static transceivers are configured to transmit and receive radio frequency signals in the ISM band. The static transceivers are further configured to measure signals received within the ISM band from mobile transceivers within the aircraft and to measure signals received from proximately located ones of the static transceivers, and to generate measurement reports containing the measurements and containing identifiers of the proximately located ones of the static transceivers and the mobile transceivers. The ISM band communication interference manager is communicatively connected to the static transceivers, and performs operations that include receiving the measurement reports from the static transceivers, and controlling transmission power levels used by the static transceivers and the mobile transceivers responsive to the content of the measurement reports.