Spectral Fragment Aggregation for Bandwidth Utilization
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Solution Overview
Problem
Traditional wireless systems face inefficiencies due to fragmented spectrum allocation, leading to unused bandwidth and disruptive reallocation processes, especially in satellite communications where small unused blocks are common, resulting in suboptimal bandwidth utilization and resilience to interference.
Innovation Solution
The system divides data streams into sub-streams and allocates them across multiple spectral fragments, adaptively adjusting modulation parameters and using spectral aggregation to combine fragmented spectrum into a contiguous block, enabling efficient bandwidth utilization and improved resilience to interference by selecting backup channels as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spectrum is allocated in contiguous blocks to customers, then bandwidth utilization is optimized, but spectrum fragmentation occurs over time leading to unused blocks and requiring disruptive reallocation
Solution Approach 1:
The patent segments the data stream into multiple sub-streams that can be transmitted over different spectral fragments. This allows the system to utilize non-contiguous spectrum blocks without requiring reallocation, thereby maintaining service continuity while improving bandwidth utilization by filling spectral gaps.
Solution Approach 2:
The patent transitions from a single contiguous spectral dimension to multiple fragmented spectral dimensions. By distributing sub-streams across different frequency bands and time slots, the system achieves efficient spectrum utilization without service disruption, resolving the contradiction between bandwidth optimization and service continuity.
2Productivity
If spectrum reallocation is performed to coalesce unused blocks, then bandwidth utilization improves, but service disruption increases
Solution Approach 1:
The patent performs preliminary actions by pre-segmenting data streams and establishing multiple transmission paths across available spectral fragments before reallocation is needed. This allows the system to dynamically utilize fragmented spectrum without requiring disruptive reallocation operations, maintaining both spectrum efficiency and operational continuity.
3Reliability
If adaptive modulation is applied to each spectral fragment, then resilience to interference improves, but system complexity increases
Solution Approach 1:
The patent applies local quality by implementing adaptive modulation independently for each spectral fragment based on its specific channel conditions. Each sub-stream receives modulation parameters optimized for its assigned frequency band, improving interference resilience while managing complexity through localized rather than global optimization.
4Reliability
If backup spectral fragments are allocated for each channel, then failover capability improves, but spectrum waste increases
Solution Approach 1:
The patent implements universality by making spectral fragments serve multiple functions and multiple customers simultaneously. The same spectral fragment can act as a primary channel for one customer and a backup channel for another, or dynamically switch roles based on channel conditions, thereby improving failover capability without proportionally increasing spectrum consumption.
Data Source
AI summary
Systems, methods and apparatus for improving resiliency to interference as well as improved bandwidth utilization in data transmission systems by using spectral fragments to convey respective portions of a data stream or file to be transmitted and independently adapting spectral fragment channel forward error correction (FEC) rate or other parameters in response to interference/impairment conditions.