Dynamic Antenna Reconfiguration After Incumbent-Based Spectrum Suspension
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Solution Overview
Problem
In wireless networks with tiered access frameworks, non-incumbent entities face performance degradation due to revoked spectrum access grants by a Spectrum Access System (SAS) to avoid interference with incumbent entities, leading to network performance issues.
Innovation Solution
A non-incumbent network entity dynamically reconfigures its antenna devices using a machine-learned model to predict configurations that cause less interference, submitting requests to the SAS for approval, thereby restoring access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the SAS revokes spectrum access grants from non-incumbent entities to avoid interference with incumbent entities, then interference protection for incumbent entities is improved, but network capacity and service continuity for non-incumbent entities deteriorate
Solution Approach 1:
The patent implements dynamic antenna configuration adjustment where the non-incumbent entity's computing system continuously monitors spectrum access grant status and automatically reconfigures antenna parameters (azimuth, elevation, beamforming weights) in response to SAS decisions. This dynamic adaptation allows the system to maintain optimal performance under changing spectrum availability conditions, resolving the contradiction between interference protection and network capacity.
Solution Approach 2:
The system changes physical parameters of antenna configurations including azimuth angles, elevation angles, and beamforming weight distributions. By adjusting these parameters, the non-incumbent entity can redirect antenna beams away from incumbent entity locations, reducing interference while maintaining service to its own users. The computing system calculates new parameter sets that satisfy SAS interference constraints while preserving network capacity.
2Duration of action of stationary object
If the non-incumbent entity uses the first antenna configuration to maintain network service, then service continuity is improved, but interference with incumbent entities increases causing access grant revocation
Solution Approach 1:
The system implements a feedback loop where the computing system receives spectrum access grant status from the SAS, evaluates current antenna configuration performance, and adjusts parameters accordingly. When the SAS revokes access grants due to interference, the system responds by recalculating and applying new antenna configurations that reduce interference while attempting to maintain service continuity. This closed-loop control resolves the contradiction between service continuity and interference generation.
Solution Approach 2:
The computing system proactively evaluates multiple potential antenna configurations and selects optimal parameter sets before SAS access grant revocation occurs. By pre-calculating alternative configurations that would satisfy interference constraints, the system can quickly switch to acceptable configurations when access is revoked, minimizing service disruption while preventing interference issues.
3Speed
If the non-incumbent entity rapidly reconfigures antenna devices to restore spectrum access, then service restoration speed is improved, but system complexity and computational requirements increase
Solution Approach 1:
The non-incumbent entity's computing system autonomously performs the entire reconfiguration process without requiring manual intervention or complex external coordination. The system self-monitors access grant status, self-calculates optimal new configurations using stored antenna parameter data, and self-applies configurations by commanding antenna devices. This self-service capability enables rapid automated response to SAS decisions while keeping the overall system architecture relatively simple.
Solution Approach 2:
The computing system maintains a pre-computed database of valid antenna configurations and their associated interference characteristics. When rapid reconfiguration is needed, the system queries this pre-prepared data and selects appropriate configurations without performing complex real-time calculations. This preliminary preparation of configuration options enables fast service restoration while avoiding the need for complex real-time optimization algorithms.
Data Source
AI summary
A spectrum access grant for a non-incumbent network entity is determined to be revoked by a Spectrum Access System (SAS) responsive to spectrum utilization by an incumbent network entity. The spectrum access grant is indicative of a first antenna configuration for one or more antenna devices of the non-incumbent network entity to communicate via a wireless network. A second antenna configuration is determined for the one or more antenna devices to communicate via the wireless network. The second antenna configuration is predicted to cause less interference between the non-incumbent network entity and the incumbent network entity. A non-incumbent spectrum access request is provided to the SAS including a request for access to the second antenna configuration for the antenna devices.