Dynamic Spectrum Allocation for Interference Management
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Solution Overview
Problem
In wireless communication systems, the scarcity and high cost of transmission resources, such as spectrum resources, limit the ability to provide high-quality and high-speed services, necessitating efficient management to allocate resources between primary and secondary systems while ensuring interference tolerance and desired communication quality.
Innovation Solution
A method and apparatus that obtain information on primary and secondary communication systems, determine available resources ensuring interference levels below the primary system's tolerance, and allocate resources based on estimated communication quality, including the use of critical region estimation and resource allocation devices to optimize transmission resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission resources are allocated to secondary system, then resource utilization efficiency is improved, but interference to primary system increases
Solution Approach 1:
The patent changes the parameter of resource allocation by introducing dynamic allocation mechanisms that adjust the amount and type of resources given to secondary systems based on primary system conditions. The spectrum management system modifies allocation parameters (resource blocks, power levels, time slots) to maximize secondary system utilization while keeping interference within acceptable thresholds defined by the primary system's interference tolerance.
Solution Approach 2:
The patent implements feedback mechanisms where the spectrum management system continuously monitors the actual interference caused to primary users and adjusts resource allocation accordingly. The system receives feedback on primary user reception quality and secondary system resource usage, then dynamically modifies allocation decisions to maintain interference below tolerance levels while optimizing resource utilization efficiency.
2Reliability
If more transmission resources are allocated to secondary system, then communication quality of secondary system is improved, but available resources for primary system decrease
Solution Approach 1:
The patent applies dynamic resource allocation where the amount of transmission resources allocated to secondary systems is not fixed but continuously adjusted based on real-time conditions. The spectrum management system dynamically determines resource allocation levels that satisfy secondary system communication quality requirements while preserving sufficient resources for primary system operations, adapting to changing traffic demands and channel conditions.
Solution Approach 2:
The patent implements local quality optimization by allocating different types and amounts of resources to different secondary systems or geographic regions based on local conditions. Rather than uniform allocation, the system tailors resource distribution to specific secondary system needs and local interference conditions, ensuring communication quality where needed while conserving resources in areas where primary system demands are higher.
3Adaptability or versatility
If dynamic spectrum utilization is implemented, then resource flexibility is improved, but system complexity increases
Solution Approach 1:
The patent introduces a spectrum management system as an intermediary layer between primary and secondary systems. This intermediary handles the complexity of dynamic resource allocation, interference monitoring, and coordination tasks, shielding individual primary and secondary systems from the computational burden. The spectrum management system centralizes the complex decision-making logic for dynamic spectrum utilization while providing simpler interfaces to constituent systems.
Data Source
AI summary
A spectrum management system includes circuitry that obtains information of a primary communication system, where the information includes an interference tolerance of the primary communication system. The circuitry also obtains a desired communication quality for a secondary communication system, and determines available resources for the secondary communication system that result in an interference level below the interference tolerance of the primary communication system. The circuitry then allocates resources to the secondary communication system based on a comparison of an estimated communication quality of the secondary communication system if the available resources are used and the desired communication quality.