Coordinated Dynamic Spectrum Access via Time-Bound Leases
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Solution Overview
Problem
Current wireless communication spectrum allocation is static and inefficient, leading to underutilization of licensed bands and interference in unlicensed bands, resulting in spectrum scarcity despite available resources, which affects network performance and user experience during peak usage.
Innovation Solution
Implementing a coordinated dynamic spectrum access method through the definition of a Coordinated Access Band (CAB) that allows dynamic allocation of radio frequencies, using a Spectrum and Information Management (SPIM) server and Radio Access Network (RAN) manager to negotiate leases and manage spectrum allocation, enabling time-bound spectrum leases and efficient spectrum utilization across multiple providers and services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static spectrum allocation is used, then regulatory control and service provider rights are maintained, but spectrum utilization efficiency deteriorates due to underutilization during off-peak times
Solution Approach 1:
The patent implements dynamic spectrum allocation where spectrum rights are not fixed but can be leased and transferred between service providers based on real-time demand. The system allows spectrum to be dynamically reassigned from underutilized providers to providers experiencing high demand, transforming the static spectrum allocation model into a dynamic marketplace that adapts to changing conditions while maintaining regulatory oversight through the SSCM.
2Reliability
If more spectrum is allocated to licensed bands, then service quality during peak hours improves, but spectrum scarcity in unlicensed bands worsens due to aggressive deployment
Solution Approach 1:
The patent introduces a Spectrum Sharing and Coordination Management (SSCM) system as an intermediary that coordinates spectrum usage between licensed and unlicensed bands. The SSCM monitors spectrum utilization and interference levels, enabling dynamic adjustments that prevent unlicensed band overcrowding while ensuring licensed services receive adequate spectrum during peak demand through a coordinated marketplace approach.
3Reliability
If service providers statically acquire extra spectrum for peak demand, then service quality during peak hours improves, but cost increases due to acquiring and configuring additional spectrum
Solution Approach 1:
The patent enables service providers to temporarily lease spectrum during peak demand periods and return it when demand subsides, rather than permanently acquiring and configuring additional spectrum. This short-term leasing model allows providers to access extra capacity when needed while avoiding the costs of permanent spectrum acquisition, hardware configuration, and long-term commitment, effectively discarding unused spectrum rights when they are not needed.
4Quantity of substance
If unlicensed bands are expanded to provide more spectrum, then available capacity increases, but interference and overcrowding worsen due to uncoordinated deployment
Solution Approach 1:
The patent implements a feedback mechanism through the SSCM that continuously monitors spectrum utilization, interference levels, and network conditions in unlicensed bands. Based on this feedback, the system dynamically adjusts spectrum allocation and provides coordination signals to service providers, enabling them to expand unlicensed band usage while maintaining acceptable interference levels through coordinated access and real-time adjustments.
Data Source
AI summary
A method and system for coordinated dynamic access to radio spectrum for wireless networking includes defining a coordinated access band (CAB) from which radio access network (RAN) managers may request spectrum allocations in the form of time bound spectrum leases for their respective requesting base stations. In one embodiment of the present invention, a DIMSUMnet architecture is implemented to make some fundamental choices and to centralize the collection of information, such as spectral occupancy, thermal and adjacent frequency interference. Such collected information is subsequently used by a spectrum broker in making spectrum allocation decisions. The DIMSUMnet architecture of the present invention also introduces a RAN manager element to centralize the task of acquiring time bound spectrum leases and for configuring the base stations.