Frequency Spectral Management via Priority Segmentation
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Solution Overview
Problem
In cognitive radio systems, there is a challenge in efficiently managing frequency spectral resources among competing secondary systems without causing interference to primary systems, as existing technologies lack effective methods to prioritize and allocate these resources efficiently.
Innovation Solution
A frequency spectral management apparatus and method that divides secondary systems into priority levels, processes requests based on priority, and adjusts frequency spectral usage to maximize resource utilization while ensuring minimal interference to primary systems, using a geographical location database to calculate and manage available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency spectral resources are dynamically allocated to secondary systems, then resource utilization efficiency is improved, but interference risk to primary systems increases
Solution Approach 1:
The patent segments secondary systems into different priority levels (first level and second level) based on their service requirements and interference tolerance. This segmentation allows the system to allocate frequency spectral resources differently to each group, ensuring that high-priority systems receive adequate resources while low-priority systems are restricted during primary system operations, thus resolving the contradiction between resource utilization and interference prevention
Solution Approach 2:
The patent implements dynamic resource allocation where the available frequency spectral resources for secondary systems are adjusted in real-time based on primary system activity. When primary systems are active, secondary systems must reduce or stop transmissions; when primary systems are inactive, secondary systems can utilize the resources. This dynamic adjustment mechanism maximizes resource utilization while preventing interference to primary systems
2Adaptability or versatility
If multiple secondary systems compete for frequency spectral resources, then service coverage is expanded, but resource allocation complexity increases
Solution Approach 1:
The patent divides competing secondary systems into distinct priority levels with different resource allocation rules. First level secondary systems receive preferential treatment with higher resource guarantees, while second level systems receive residual resources. This segmentation simplifies the allocation process by establishing clear hierarchical rules, reducing the complexity of managing multiple competing systems while maintaining expanded service coverage
Solution Approach 2:
The patent changes the allocation parameter from equal treatment to priority-based differential treatment. By introducing priority levels as a key parameter, the system can automatically differentiate resource allocation among multiple secondary systems without complex real-time negotiations, thereby managing resource allocation complexity while supporting diverse service requirements
3Reliability
If frequency spectral resources are allocated to ensure high-priority secondary systems, then communication quality is improved, but resource availability for other systems decreases
Solution Approach 1:
The patent implements dynamic resource allocation where the quantity of frequency spectral resources allocated to first level secondary systems varies based on primary system activity. When primary systems are inactive, first level systems can access maximum resources ensuring high communication quality; when primary systems are active, resources are dynamically adjusted to prevent interference. This dynamic mechanism ensures communication quality while optimizing overall resource availability across different time periods
Data Source
AI summary
A system that receives a request for resources from a first system of a plurality of systems having different levels of priority; identifies resources that are available in a second system different from the plurality of systems based on the received request; and determines whether to adjust a resource assigned to the plurality of systems based on the priority level of the first system and the resources that are available in the second system.