Satellite Physical Layer Frame Sub-Channelization
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Solution Overview
Problem
Current satellite communication systems face capacity limitations, restricting the number of customers who can receive sufficient bandwidth due to the inherent design constraints, despite advancements in communications and processing technology.
Innovation Solution
The implementation of adaptive coding and modulation techniques, along with sub-channelization methods, allows for efficient transmission and reception of broadband signals between gateways and subscriber terminals via satellite, enabling dynamic allocation of bandwidth and modulation formats based on link conditions, thereby optimizing the use of available capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-channelization techniques are implemented, then the number of customers served with sufficient bandwidth is improved, but the device complexity increases
Solution Approach 1:
The patent applies sub-channelization by dividing the satellite communication channel into multiple sub-channels, each dedicated to specific customers or service types. This segmentation allows the system to serve more customers simultaneously with sufficient bandwidth by allocating dedicated sub-channels to each customer group, directly resolving the contradiction between serving more customers and managing system complexity through structured division of resources
2Productivity
If adaptive coding and modulation are used, then the efficiency of bandwidth utilization is improved, but the processing requirements increase
Solution Approach 1:
The patent implements adaptive coding and modulation by dynamically adjusting the modulation scheme and error correction coding based on real-time link conditions such as signal-to-noise ratio. This dynamic adaptation allows the system to optimize bandwidth utilization efficiency for each sub-channel according to actual channel quality, resolving the contradiction between improved efficiency and increased processing requirements through conditional adaptation rather than fixed configurations
Data Source
AI summary
Systems, devices, processors, and methods are described for the transmission and reception of broadband signals between a gateway and subscriber terminals via satellite. In one set of embodiments, a wireless signal is generated and transmitted including a series of frames including a physical layer header and payload. A sub-channel identifier may be included in the physical layer header to identify the sub-channel for the payload, and allow for various novel filtering techniques at the subscriber terminal. The frames may be generated to be of substantially equal duration. Novel subscriber terminal configurations are described to leverage this formatting.