Dynamic Spectrum Sharing via Signal Descriptor Objects
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Solution Overview
Problem
The existing RF spectrum is fully allocated, leading to inefficiencies in wireless broadband applications, necessitating methods to increase spectrum utilization through spectrum sharing, which requires accurate mapping and modeling of temporal and spatial variations in RF environment to identify unused portions and prioritize users effectively.
Innovation Solution
A method and apparatus for determining and sharing spectrum availability by automatically sensing and analyzing the RF spectrum to identify used and unused portions, communicating this information to spectrum owners or users, and prioritizing users to allocate unused spectrum efficiently, utilizing Signal Descriptor Objects (SDO) and Hole Descriptor Objects (HDO) to summarize and communicate essential information for dynamic spectrum sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spectrum is fully allocated to licensed users, then spectrum ownership rights are protected, but spectrum utilization efficiency deteriorates due to low actual occupancy
Solution Approach 1:
The patent segments the spectrum allocation system into multiple tiers: primary licensed users retain guaranteed access, while secondary and tertiary users can access unused portions. This segmentation allows simultaneous protection of ownership rights and improvement of utilization efficiency by creating distinct access levels.
Solution Approach 2:
The patent implements dynamic spectrum sharing where allocation is not static but adapts based on actual usage patterns. The system continuously monitors spectrum occupancy and dynamically assigns unused portions to secondary users, making the allocation flexible and responsive to real-time conditions while maintaining primary user rights.
2Productivity
If spectrum sharing is implemented, then spectrum utilization efficiency is improved, but interference management complexity increases
Solution Approach 1:
The patent introduces a spectrum coordination system that acts as an intermediary between primary and secondary users. This mediator monitors spectrum usage, identifies unused portions, and coordinates allocations to prevent interference, thereby managing the complexity centrally rather than requiring complex interactions between all users.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors spectrum occupancy and usage patterns. This feedback information is used to adjust allocations in real-time, ensuring that secondary users do not interfere with primary users while maximizing utilization of unused spectrum resources.
3Measurement precision
If comprehensive spectrum monitoring is performed, then accurate spectrum availability information is obtained, but measurement and analysis difficulty increases due to multi-dimensional variations
Solution Approach 1:
The patent applies local quality analysis by examining spectrum characteristics at specific time, frequency, and spatial locations independently. Instead of attempting to analyze all multi-dimensional variations simultaneously, the system focuses on local spectrum conditions to build an accurate picture of availability, reducing the complexity of measurement and analysis.
Solution Approach 2:
The patent transforms the complex multi-dimensional spectrum data into a more manageable representation by introducing additional dimensions for analysis. The system organizes spectrum occupancy information across time, frequency, and space into structured models that simplify the detection and measurement processes while maintaining comprehensive coverage.
4Adaptability or versatility
If N-tiered user prioritization is implemented, then spectrum allocation flexibility is improved, but system complexity increases beyond traditional three-tiered models
Solution Approach 1:
The patent implements a universal prioritization framework where the same basic N-tiered structure can accommodate different numbers of user tiers based on specific needs. The system is designed to be multi-functional, supporting both traditional three-tiered models and expanded N-tiered configurations using the same fundamental mechanisms, thereby improving flexibility without proportionally increasing complexity.
Data Source
AI summary
A method and apparatus for determining and sharing RF spectrum availability. The method includes automatically sensing and analyzing a spectrum to identify used and/or unused portions of the spectrum, and automatically communicating the used and/or unused portions of the spectrum to a spectrum owner or a spectrum user. The invention has particular use in automatically identifying and quantifying current spectrum users, automatically reporting the current spectrum users to a spectrum owner, and/or allocating unused spectrum portions to users.