Software Defined Spectrum Sharing Controller for Dynamic Allocation
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Solution Overview
Problem
Current Spectrum Access System (SAS) technologies are limited in dynamically reallocating spectrum among Priority Access (PA) users, leading to underutilization of available spectrum and increased costs for PA users, as they cannot acquire more than 30 MHz of spectrum on demand, restricting their capacity and revenue potential.
Innovation Solution
The implementation of a Software Defined Spectrum Sharing Controller (SDSSC) that enables elastic ownership of tier 2 PA spectrum, allowing for pay-per-use spectrum ownership, real-time monitoring, and choice between dedicated licensed/unlicensed spectrum usage, thereby increasing the number of PA users and revenue potential by facilitating spectrum sharing among PAL users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static spectrum allocation is used for PAL users, then spectrum access is guaranteed with interference protection, but spectrum utilization is low and users cannot acquire additional spectrum on demand
Solution Approach 1:
The patent implements dynamic spectrum allocation that allows PAL users to transition from static 30 MHz allocation to flexible on-demand acquisition. The system dynamically adjusts spectrum grants based on real-time utilization metrics, enabling users to acquire additional spectrum when needed while maintaining interference protection guarantees. This resolves the contradiction by making the allocation system adaptive rather than fixed.
Solution Approach 2:
The system performs preliminary actions by pre-establishing interference protection mechanisms and spectrum access rights for PAL users before they need additional spectrum. When utilization thresholds are met, the system has already prepared the framework for dynamic expansion, allowing seamless acquisition of additional spectrum without compromising previously guaranteed protection.
2Reliability
If PAL users are limited to 30 MHz maximum allocation, then interference protection is maintained, but capacity and revenue potential are restricted
Solution Approach 1:
The patent implements a dynamic allocation framework where the 30 MHz limit is not fixed but adjustable based on real-time conditions. The system continuously monitors spectrum utilization and can dynamically increase allocations beyond 30 MHz when interference conditions permit, thereby increasing capacity and revenue potential while maintaining protection through active monitoring and adjustment.
Solution Approach 2:
The system changes the parameter of maximum allocation from a fixed 30 MHz to a variable threshold that adapts based on interference conditions, utilization metrics, and network state. This allows the quantity of spectrum to expand beyond traditional limits while maintaining reliability through parameter-based control mechanisms.
3Productivity
If unutilized PA spectrum is made available to GAA tier, then spectrum sharing increases, but PA users cannot access it even when willing to pay for additional capacity
Solution Approach 1:
The patent creates a universal spectrum access mechanism that serves multiple functions: it maintains GAA access to unutilized spectrum while simultaneously enabling PAL users to acquire the same spectrum through dynamic allocation. The system acts as a multi-functional platform that can serve both tiers appropriately based on demand and utilization, resolving the contradiction between sharing efficiency and user flexibility.
Solution Approach 2:
The system introduces an intermediary allocation mechanism that mediates between GAA and PAL user needs. This intermediary layer monitors spectrum utilization and facilitates transfers or additional allocations to PAL users who want to acquire capacity, while maintaining overall sharing efficiency. The intermediary resolves the conflict by enabling PA users to access previously unavailable spectrum.
Data Source
AI summary
A spectrum Sharing Controller comprises: an interface to a sharable spectrum, wherein the sharable spectrum is assigned to a first hierarchy level; a processor configured to enable a first entity for accessing at least part of the sharable spectrum on the first hierarchy level, wherein the processor is configured to assign a second hierarchy level to the at least part of the sharable spectrum accessible to the first entity, and wherein the processor is configured to enable a second entity for accessing at least part of the sharable spectrum on the second hierarchy level.