Spectrum Allocation in CBRS Networks via Iterative EIRP Adjustment
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Solution Overview
Problem
Determining available channels and power in a spectrum-controlled wireless communication network, particularly in CBRS systems, is challenging due to interference management and efficient allocation requirements, necessitating innovative methods to maximize spectrum utilization while minimizing interference.
Innovation Solution
The method involves iterative registration and spectrum inquiry processes with a Spectrum Management Entity (SME) to determine available spectrum, using a Domain Proxy and Self-Organizing Network (SON) techniques to allocate channels efficiently, identifying primary and supplemental BS/APs, and dynamically adjusting EIRP to optimize channel allocation and interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If iterative registration and spectrum inquiry processes are used with dynamic EIRP adjustment, then channel availability is maximized and interference is reduced, but network complexity and configuration time increase
Solution Approach 1:
The system employs self-organizing network (SON) techniques where base stations automatically perform iterative registration and spectrum inquiries with the SME, dynamically adjusting their own EIRP levels without manual intervention. The domain proxy automates the coordination between multiple base stations and the spectrum management entity, enabling the network to self-configure and optimize spectrum utilization while maintaining reliability.
Solution Approach 2:
The patent implements dynamic EIRP adjustment where base stations continuously adapt their transmission power levels based on real-time spectrum availability feedback from the SME. This dynamic parameter adjustment allows the system to maximize channel availability and reduce interference adaptively, transforming a static configuration into a flexible, responsive network that automatically optimizes its performance.
2Productivity
If iterative EIRP reduction and re-registration is performed to determine available spectrum, then spectrum utilization is optimized, but time and signaling overhead increase
Solution Approach 1:
The system performs preliminary spectrum inquiries during the initial registration phase with the SME, establishing baseline spectrum availability information before full network operation begins. This preliminary action allows base stations to pre-configure their EIRP levels based on anticipated spectrum conditions, reducing the need for extensive iterative adjustments later and accelerating network deployment while maintaining optimized spectrum utilization.
Solution Approach 2:
The patent implements a feedback mechanism where the SME continuously provides spectrum availability information to base stations through the domain proxy. This real-time feedback allows base stations to adjust their EIRP levels iteratively based on actual spectrum conditions, optimizing spectrum utilization efficiently. The feedback loop enables the system to converge quickly on optimal configurations by learning from each inquiry response, reducing overall determination time.
3Reliability
If primary and supplemental BS/APs are identified and configured differently, then network performance is enhanced and interference reduced, but device complexity and management overhead increase
Solution Approach 1:
The patent applies local quality by differentiating the configuration and functionality of primary versus supplemental base stations based on their specific roles in the network. Primary base stations are configured with full spectrum inquiry and EIRP adjustment capabilities to serve as anchor points, while supplemental base stations use simplified configurations that leverage information from primary stations. This localized differentiation optimizes network performance and interference management while keeping individual device complexity manageable through role-based configuration.
Solution Approach 2:
The system merges the operational complexity of spectrum management into a centralized domain proxy that handles iterative registration and coordination with the SME on behalf of multiple base stations. By combining these complex functions at the proxy level rather than implementing them in each individual base station, the system enhances overall network performance through coordinated operation while reducing the operational complexity burden on individual devices and simplifying management overhead.
Data Source
AI summary
Methods and apparatus are disclosed for determining spectrum availability within a radio band managed by a Spectrum Management Entity (SME), and allocating available spectrum to Base Station/Access Points (BS/APs) of an Enterprise Network (EN). The EN includes a domain proxy that sends a registration request to the SME indicating a maximum EIRP for the BS/APs. After receiving registration, the Domain Proxy sends a spectrum inquiry and receives a response specifying available spectrum. If less than the entire requested spectrum is available, then the maximum EIRP indication is reduced, and a next iteration is performed re-registering the BS/APs and requesting spectrum. Iterations are repeated until the entire requested spectrum is available, and then spectrum is allocated to the BS/APs. Each iteration of channel availability is stored, and channels are allocated utilizing a Self-Organizing Network (SON) technique responsive to the stored channel availability. The EN may comprise a CBRS Network.