Multi-Sector Small-Cell Antennas for Dynamic CBRS Spectrum Allocation
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Solution Overview
Problem
Current omni-directional and multi-sector antennas in wireless networks are not well adapted to dynamic changes in spectrum availability, user density, and electrical power limitations, leading to inefficient utilization of resources in consumer-based small-cell applications.
Innovation Solution
A wireless access point apparatus with a multi-sector antenna system that selectively configures antenna elements based on RF spectrum type, user traffic density, and electrical power availability, utilizing quasi-licensed CBRS spectrum through CBRS domain proxies and Spectrum Allocation Systems to optimize sector utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If omni-directional and multi-sector antennas are used in wireless networks, then coverage area is provided, but they are not well adapted to dynamic changes in spectrum availability, user density, and electrical power limitations, leading to inefficient resource utilization
Solution Approach 1:
The patent applies dynamics by making the antenna system adjustable and reconfigurable in response to changing conditions. The base station dynamically adjusts antenna sector configurations, activates or deactivates specific antenna elements, and modifies beamforming parameters based on real-time spectrum availability, user density, and power constraints, transforming a static antenna system into an adaptive one that optimizes resource utilization.
Solution Approach 2:
The patent implements local quality by differentiating treatment across different antenna sectors and elements. Each antenna element or sector can be independently configured, activated, or deactivated based on local conditions such as user density, interference levels, and available power. This allows optimized resource allocation where high-quality service is provided to high-demand areas while reducing or eliminating service in low-demand or constrained areas.
2Area of stationary object
If multiple antenna elements are configured to serve different azimuth sectors, then spatial coverage is improved, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the antenna system into distinct azimuth sectors, each served by specific antenna elements. This segmentation allows independent control and optimization of each sector's coverage and performance. The base station can selectively activate or deactivate entire sectors based on demand, simplifying management while maintaining comprehensive spatial coverage when needed.
Solution Approach 2:
The patent implements multi-functionality by designing antenna elements and sectors to serve multiple purposes. The same physical antenna infrastructure can provide coverage for different azimuth sectors, support various service types (mobile broadband, fixed wireless access, indoor coverage), and adapt to different operational modes (high power for outdoor coverage, low power for indoor service) based on real-time conditions.
3Productivity
If antenna sectors are selectively activated based on user traffic density and interference levels, then network performance is optimized, but the control and measurement requirements increase
Solution Approach 1:
The patent applies feedback mechanisms where the base station continuously monitors network conditions including user traffic density, signal strength, and interference levels. This feedback information is used to dynamically adjust antenna sector activation, modify beamforming parameters, and reallocate resources. The feedback loop enables automated optimization of network performance without requiring complex manual measurement and analysis.
Data Source
AI summary
Apparatus and methods for providing multi-tier quasi-licensed spectrum wireless service via a common wireless access node such as a small-cell. In one embodiment, the quasi-licensed system utilizes multi-sector antennae to create antenna lobes adaptively according to parameters associated with different cell sectors, such as user traffic, random access requests, and/or interference. In one variant, when the user traffic or interference is determined to be very high in a particular sector, the sector is configured and activated based on the availability of low-noise spectrum. In another variant, when a new sector is created, the electrical power resources available for that sector are checked, and based on the amount of power available at that sector, either CBSD Category A or B status is allocated to that sector.