Dynamic Aperture Windows for Satellite Communication Bandwidth Efficiency
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Solution Overview
Problem
Satellite communication systems face inefficiencies in bandwidth utilization due to variability in timing synchronization caused by satellite movement and time jitter, leading to increased overhead and reduced throughput, especially at higher symbol rates.
Innovation Solution
The system dynamically adjusts aperture window sizes based on terminal timing offsets and maximum satellite drift to optimize bandwidth utilization, reducing overhead and increasing throughput by aligning the aperture window with the terminal's timing offset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed aperture window size is used for all terminals, then timing synchronization is simplified, but bandwidth utilization efficiency deteriorates due to increased overhead
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed aperture window size to a dynamically adjusted aperture window size. The aperture window is modified based on terminal-specific timing offsets and satellite drift characteristics, allowing the system to adapt to varying synchronization conditions while optimizing bandwidth utilization for each terminal.
Solution Approach 2:
The patent implements local quality by tailoring the aperture window parameters to individual terminal characteristics. Each terminal receives a customized aperture window configuration based on its specific timing offset and satellite drift, rather than using a uniform aperture for all terminals, thereby optimizing performance for each local condition.
2Reliability
If aperture window size is increased to accommodate timing variability, then synchronization reliability is improved, but overhead increases and throughput decreases
Solution Approach 1:
The patent applies parameter changes by adjusting the aperture window size parameter based on measured timing offsets and satellite drift. The system changes the aperture parameter dynamically to match actual synchronization conditions, using larger apertures only when necessary and smaller apertures when timing is stable, thereby optimizing the trade-off between reliability and throughput.
Solution Approach 2:
The patent implements partial action by applying aperture window expansion only to the extent necessary to accommodate timing variability. Rather than using a uniformly large aperture for all conditions, the system applies aperture adjustment partially and selectively based on actual timing offset measurements, avoiding excessive overhead when full aperture expansion is not required.
3Productivity
If aperture window is dynamically adjusted for each terminal, then bandwidth efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies feedback by measuring actual timing offsets at the gateway and using this information to adjust aperture windows for individual terminals. The system continuously monitors synchronization conditions and adapts aperture parameters based on real-time feedback, automating the complexity management through data-driven decision-making rather than manual configuration.
Solution Approach 2:
The patent implements self-service by enabling the system to automatically measure timing offsets and adjust aperture windows without external intervention. The gateway autonomously monitors synchronization conditions, calculates appropriate aperture sizes, and applies them to terminals, reducing the need for manual system configuration and simplifying operational complexity.
Data Source
AI summary
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for dynamically reducing an aperture size to reduce overhead. In some implementations, a server can receive a first transmission from a first terminal through a communication network. The server can determine a timing offset associated with the first terminal based on the first transmission. The server can determine an aperture window size for an aperture window for the first terminal based on the determined timing offset associated with the first terminal. The server can generate allocation data that assigns communication resources to one or more terminals that includes the first terminal, the allocation data being based on the determined aperture window size for the first terminal. The server can communicate with the one or more terminals to indicate the communication resources respectively allocated to the one or more terminals.