Spectrum Allocation Management via Priority Preemption
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Solution Overview
Problem
Current spectrum allocation methods for wireless communications, particularly in TV whitespace, are inefficient as they do not effectively manage preemptive spectrum needs, leading to interference and suboptimal use of available spectrum among different user priorities.
Innovation Solution
A system and method for managing spectrum allocation through a central registration system that issues spectrum certificates to users, allowing for dynamic allocation and revocation based on priority needs, using a distributed architecture to handle high registration volumes and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a higher priority user requires spectrum, TV whitespace users may be forced to relinquish spectrum at least on a temporary basis
Solution Approach 1:
The system performs preliminary actions by establishing priority levels and pre-defined revocation protocols before spectrum conflicts occur. When a higher priority user needs spectrum, the system can immediately revoke lower priority allocations without negotiation or delay, as the revocation criteria were predetermined. This resolves the contradiction by preparing the framework in advance that enables rapid spectrum reallocation.
Solution Approach 2:
The spectrum allocation system is designed to be dynamic, allowing allocations to be temporarily revoked and reallocated based on changing priority needs. The system continuously monitors spectrum requests and can adjust allocations in real-time, transforming the static spectrum assignment into a flexible, adaptive resource management approach that prioritizes reliability over time efficiency.
2Productivity
If current spectrum allocation methods are used, then spectrum is allocated to users, but interference occurs and spectrum utilization is suboptimal
Solution Approach 1:
The system implements feedback mechanisms where spectrum usage information, interference levels, and priority requests are continuously monitored and fed back to the allocation algorithm. This enables the system to detect interference conditions and adjust allocations dynamically, revoking spectrum from users causing interference and reallocating to higher priority users, thereby optimizing utilization while eliminating harmful interference through continuous monitoring and adjustment.
Solution Approach 2:
The system changes key parameters including priority levels, allocation durations, and geographic boundaries based on real-time conditions. By dynamically adjusting these parameters rather than maintaining fixed allocations, the system can optimize spectrum utilization efficiency while preventing interference through adaptive parameter modification in response to changing operational conditions.
3Productivity
If a centralized spectrum management system is implemented, then spectrum allocation can be optimized, but registration burden and system complexity increase
Solution Approach 1:
The centralized spectrum management system is segmented into distributed registration points and regional management nodes that handle local allocations independently. This segmentation reduces the complexity burden on any single component while maintaining centralized optimization capabilities through coordinated communication between segments. Users register with local nodes rather than a monolithic central system, reducing perceived complexity while preserving management efficiency.
Solution Approach 2:
The system introduces intermediary components including spectrum brokers and automated registration agents that mediate between users and the central management system. These intermediaries handle complex registration procedures, priority assessments, and allocation negotiations, shielding users from system complexity while enabling efficient centralized spectrum management through automated intermediary processing.
Data Source
AI summary
Disclosed are techniques for managing situations where spectrum use by one party is preempted by spectrum needs of another party. A revocation may be sent from a spectrum management system to secondary radio systems that are impacted by the presence of priority radio system. Remedial action may be taken if an acknowledgement of the revocation message is not received from a secondary radio system. Also, the secondary radio systems may transmit keep-alive messages to monitor operation of the communication pathway for the revocation messages.