Aircraft Data Network Message Scheduler for Bandwidth Efficiency
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Solution Overview
Problem
Legacy avionics systems rely on federated subsystems with dedicated logic and interfaces, leading to inefficiencies in data sharing and processing across multiple systems, resulting in higher data transmission frequencies than necessary.
Innovation Solution
A data communications network with a central data server and message scheduler that asynchronously connects remote input units and subscriber units, enabling efficient data distribution, processing, and synchronization across the aircraft, using a current value table and parametric message scheduler to manage and transmit data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data is sampled and transmitted at higher frequency in legacy federated systems, then input-data-sample-time-to-processed-output delay is reduced, but bandwidth consumption and power usage increase
Solution Approach 1:
The patent changes the parameter of data transmission frequency from high (legacy federated systems) to variable/synchronized (invention). The system dynamically adjusts transmission frequency based on actual processing needs, using a message scheduler that coordinates when data should be published and transmitted. This synchronization ensures low latency only when necessary, reducing overall power consumption while maintaining timely processing.
Solution Approach 2:
The patent implements periodic data sampling and transmission at synchronized intervals rather than continuous high-frequency transmission. The message scheduler establishes periodic publication rates that are coordinated across the system, allowing data to be transmitted at regular, optimized intervals that reduce power consumption while maintaining adequate response times for aircraft systems.
2Loss of time
If data is sampled and transmitted at higher frequency, then input-data-sample-time-to-processed-output delay is reduced, but network bandwidth efficiency decreases
Solution Approach 1:
The system changes the transmission frequency parameter from fixed high-frequency to synchronized variable-frequency. The message scheduler coordinates data publication rates to match actual processing requirements, transmitting data only when changes occur or at optimized intervals. This reduces unnecessary bandwidth consumption while maintaining adequate latency performance through synchronized timing across the network.
Solution Approach 2:
The patent ensures continuous useful data transmission through synchronized periodic publishing. Rather than intermittent or ad-hoc transmission, the system maintains continuous flow of synchronized data at optimized rates, ensuring that bandwidth is continuously utilized for meaningful transmissions rather than redundant high-frequency updates, thus improving overall bandwidth efficiency.
3Ease of repair
If multiple federated systems are used with dedicated interfaces, then system modularity and ease of repair are improved, but data sharing efficiency and processing coordination deteriorate
Solution Approach 1:
The patent introduces a universal message scheduler and common data network that serves multiple federated systems. Instead of dedicated point-to-point interfaces between each subsystem, a single standardized message scheduling mechanism coordinates data exchange across all systems. This universal interface maintains the modularity benefits of federated systems while dramatically improving data sharing efficiency through centralized coordination and synchronized publication rates.
Solution Approach 2:
The message scheduler acts as an intermediary between multiple federated systems. Rather than systems directly communicating through dedicated interfaces, the scheduler mediates all data exchanges, coordinating publication and transmission timing. This intermediary layer enables efficient data sharing across modular systems while preserving their independence and ease of repair through standardized interfaces.
Data Source
AI summary
A data communications network having a plurality of remote input units providing data, a data server for storing data, and subscriber units consuming data. The data communications network controls and manages the receipt of the data originating from the remote input, the processing of the data in a form suitable for the subscriber units, and the distribution of the processed data to the subscriber units.