Environmental Sensing Capability Planning for Shared Spectrum
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Solution Overview
Problem
Conventional radio system planning techniques for environmental sensing capability (ESC) systems fail to balance primary user detection with minimal impact on secondary users, often resulting in 'dead zones' where secondary users cannot transmit due to excessive interference, particularly in densely populated areas near primary user operation regions.
Innovation Solution
A method that models both dead zone and protection region coverage for ESC systems, determining prospective radio locations and transmit power levels, and adjusts receiver system parameters such as antenna location and gain to optimize detection of primary users while minimizing dead zones and enhancing protection region coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the ESC system is designed to detect emissions of primary users with high detection rate, then the detection capability is improved, but the dead zone area increases and secondary users are adversely affected
Solution Approach 1:
The patent applies parameter changes by adjusting receiver system parameters (antenna location, antenna gain, front end gain) to optimize the balance between detection capability and dead zone reduction. The system models different parameter configurations and selects optimal values that achieve required detection rates while minimizing dead zone area and protecting secondary users.
2Object-affected harmful factors
If the receiver system parameters are adjusted to reduce dead zones, then the impact on secondary users is reduced, but the detection capability of primary users deteriorates
Solution Approach 1:
The patent implements feedback through an iterative optimization process. The system models the impact of receiver parameters on both detection capability and dead zone formation, evaluates performance metrics, and adjusts parameters accordingly. This feedback loop continues until optimal parameters are found that satisfy both detection requirements and secondary user protection.
Solution Approach 2:
The patent applies preliminary action by performing comprehensive system modeling and parameter optimization before actual ESC system deployment. The methodology predicts dead zone formation and detection performance in advance, allowing designers to select optimal parameters that avoid both excessive dead zones and insufficient detection capability.
3Ease of manufacture
If conventional radio system planning techniques are used for ESC system deployment, then the deployment process is simplified, but the balance between primary user detection and secondary user protection is not achieved
Solution Approach 1:
The patent extends conventional radio system planning techniques by adding multi-functionality. The same planning framework is used to optimize both primary user detection and secondary user protection, creating a universal methodology that handles multiple objectives simultaneously rather than requiring separate specialized approaches.
Data Source
AI summary
Techniques for planning locations of receiver systems for an environmental sensing capabilities (ESC) system are provided. An ESC system is used to detect activity of primary users in shared spectra. The techniques can be used to reduce dead zone area(s), created by the receiver systems, for radios of secondary systems using the shared frequency spectrum.