Frequency Set Classification for Spectrum Sharing
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Solution Overview
Problem
In environments where an incumbent radio communication system exists, existing technologies face challenges in efficiently sharing frequencies among multiple systems, particularly due to interference and differences in radio access technologies, leading to suboptimal frequency utilization and coexistence issues.
Innovation Solution
A method and apparatus that classify frequency sets based on sub-frequency resource utilization states to effectively manage and assign frequency resources, allowing for efficient sharing by distinguishing between operating, coexistent, available, protected, restricted available, and unclassified sets, and updating these classifications based on location and spectrum sensing information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency sharing is implemented among multiple systems, then frequency utilization efficiency is improved, but interference and coexistence issues worsen
Solution Approach 1:
The frequency band is divided into multiple sub-frequency resources, and each sub-frequency resource is assigned to different frequency sharing systems based on their characteristics and requirements. This segmentation allows multiple systems to operate simultaneously in different frequency portions, improving overall utilization while preventing interference between systems.
Solution Approach 2:
Different frequency sets are assigned to different systems based on local conditions and system characteristics. Each system receives frequency resources tailored to its specific needs and operational environment, optimizing performance while minimizing interference with other systems.
2Productivity
If frequency resources are shared among systems using different radio access technologies, then frequency utilization efficiency is improved, but system complexity and coordination overhead worsen
Solution Approach 1:
The frequency band is segmented into distinct frequency sets, with each set assigned to specific systems or technologies. This clear division reduces coordination complexity by establishing predefined rules for frequency usage, eliminating the need for continuous negotiation and coordination between diverse systems.
Solution Approach 2:
A frequency assignment entity acts as an intermediary that manages frequency set assignments and maintains information about which systems use which frequency resources. This mediator simplifies coordination by centralizing the management of frequency sharing rules and reducing direct interaction complexity between different radio access technologies.
3Productivity
If frequency sets are classified and assigned to single systems, then frequency sharing efficiency is improved, but frequency resource flexibility worsens
Solution Approach 1:
The frequency set assignments are not fixed but can be dynamically adjusted based on system performance, interference conditions, and changing operational requirements. The frequency assignment entity can reassign frequency sets between systems as needed, providing both efficient dedicated usage and the flexibility to adapt to changing conditions.
Data Source
AI summary
Provided is a method and apparatus for sharing a frequency in an environment where an incumbent system exists. In a frequency environment where the incumbent system exists, a frequency resource management may be smoothly performed using a plurality of frequency sets classified based on a utilization state of each sub-frequency resource. When a frequency sharing system using the same radio access technology (RAT) as a frequency sharing system to be assigned with a frequency resource exists, it is possible to reduce overhead for frequency sharing by priorly assigning a corresponding frequency resource to to the frequency sharing system to be assigned with the frequency resource.