Multi-Link RF Test Platform for NTN Encoding and Link Evaluation
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Solution Overview
Problem
There is a need to provide a test method and system to emulate and verify the performance of multi-link communication systems, particularly in non-terrestrial networks (NTN), which encompass various wireless communication systems including satellites and drones, to ensure sufficient data quality and resilience across different link characteristics.
Innovation Solution
A method and system for testing multi-link communication systems that involve processing transmission data with different encoding and compression schemes, converting it into RF signals, transferring these signals through multiple communication links, sampling and decoding them, and analyzing performance using predefined quality metrics such as data throughput, block error rate, and Mean Opinion Score (MOS).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic data encoding and compression are applied to counter link quality effects, then data quality and resilience are improved, but device complexity increases
Solution Approach 1:
The patent applies different encoding and compression schemes dynamically based on link quality parameters. The system adjusts modulation and coding schemes (MCS) according to measured link conditions, changing parameters adaptively to optimize performance while managing complexity through parameter-based decision making rather than fixed complex processing.
Solution Approach 2:
The system implements dynamic link adaptation where encoding and compression parameters are adjusted in real-time based on measured link quality. This dynamic approach allows the system to optimize data quality by adapting to changing link conditions, using feedback mechanisms to modify processing parameters continuously.
2Adaptability or versatility
If multiple encoding and compression schemes are emulated for different link scenarios, then test coverage and performance verification are improved, but test system complexity increases
Solution Approach 1:
The test system is designed with multi-functionality to emulate various link scenarios and communication modes through a unified platform. The same test system can configure different encoding schemes, compression ratios, and link characteristics to verify performance across multiple scenarios without requiring separate specialized equipment for each test case.
Solution Approach 2:
The test system uses parameter configuration to emulate different link scenarios. By changing test parameters such as signal strength, interference levels, and encoding schemes, the system can verify performance across diverse conditions using a single test platform, avoiding the need for multiple specialized test systems.
3Productivity
If data is aggregated over multiple links with different characteristics, then data throughput and resilience are improved, but measurement precision requirements increase
Solution Approach 1:
The patent segments the evaluation process into separate quality metrics, each measuring specific aspects of performance (throughput, latency, error rate, MOS). This segmentation allows precise measurement of individual performance characteristics while evaluating aggregate performance across multiple links, making it easier to analyze and interpret results without requiring all metrics to be measured with equal precision simultaneously.
Data Source
AI summary
A test system for testing performance of a multi-link communication system including at least one non-terrestrial network (NTN) communication link. The system comprises an encoding and compression stage to process transmission data at a signal transmission side of the test system by emulating different encoding and compression schemes to provide encoded and compressed transmission data converted into radio frequency, RF, signals transferred via communication links of the communication system to a terrestrial wireless device at a signal reception side of the test system. The system further comprises a decoding and decompression stage to apply corresponding decoding and decompression schemes to sampled RF signals to provide reception data at the signal reception side of the system and a data analysing unit adapted to analyse a performance of the communication system by evaluating the reception data provided by the decoding and decompression stage of the system.