Dynamic Spectrum Allocation for Wireless Capacity Optimization
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing limited spectrum resources, particularly in dynamically adapting to varying user demand and interference issues.
Innovation Solution
The technology involves a dynamic spectrum allocation system that utilizes a spectrum access system (SAS) to manage Citizens Broadband Radio Service (CBRS) spectrum, allowing for on-demand allocation and reallocation of spectrum based on user demand, and adjusting the uplink-to-downlink ratio to optimize wireless capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual spectrum allocation is used, then exclusive licensed spectrum can be obtained, but the process takes much time and is not automated
Solution Approach 1:
The patent implements dynamic spectrum allocation where the SAS automatically adjusts spectrum grants based on real-time network conditions, user demand, and interference levels. This replaces static manual allocation with adaptive automated decision-making, resolving the contradiction between reliable allocation and time consumption.
Solution Approach 2:
The system continuously monitors spectrum usage, interference conditions, and network performance, then feeds this information back to the SAS which adjusts allocations accordingly. This closed-loop feedback mechanism enables automated spectrum management that is both reliable and time-efficient.
2Productivity
If more spectrum is allocated to meet growing wireless demand, then network capacity increases, but interference becomes more problematic
Solution Approach 1:
The patent applies different spectrum allocation strategies to different geographic locations, user types, and time periods. The SAS evaluates local interference conditions and network demands separately, allocating spectrum optimally for each context rather than using uniform allocation, thereby increasing capacity while managing interference locally.
Solution Approach 2:
The system dynamically changes spectrum allocation parameters including frequency bands, power levels, and time slots based on real-time conditions. This enables the network to adapt to changing demands and interference patterns, maximizing capacity while preventing harmful interference through continuous parameter optimization.
3Adaptability or versatility
If CBRS spectrum sharing is implemented, then spectrum utilization improves, but complex management of multiple user priorities is required
Solution Approach 1:
The patent implements a universal SAS platform that handles multiple user types (incumbent, priority, and general authorized access users) through a single automated system. This multi-functional SAS manages spectrum sharing across all user categories with unified policies and procedures, reducing operational complexity despite the diverse sharing requirements.
Solution Approach 2:
The SAS automatically performs spectrum allocation, monitoring, and adjustment without human intervention. The system self-manages the complex priorities and requirements of different user types through automated decision algorithms, eliminating the need for manual coordination while maintaining sophisticated spectrum sharing capabilities.
Data Source
AI summary
The described technology is generally directed towards adaptive spectrum as a service, in which spectrum can be dynamically allocated to adapt to demand for wireless capacity. The demand for wireless capacity can be based on monitoring system state, and/or proactively predicted based on other system state such as time of day. Reallocated spectrum can be monitored for performance, to converge spectrum allocation to a more optimal state. Allocated spectrum can be relocated, increased or decreased, including by the use of citizens band radio service spectrum or other spectrum. Currently allocated spectrum can be adapted into modified allocated spectrum by an application program (xApp) coupled to a radio access network intelligent controller (RIC), a citizens broadband radio service device, a domain proxy service, and/or a user device.