Dynamic Spectrum Sharing in Wireless Network Cloud
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Solution Overview
Problem
Traditional cellular networks face significant capital investment challenges in scaling and maintaining base-stations due to the lack of dynamic spectrum sharing mechanisms, as service providers are locked into long-term contracts with prohibitive overhead in reconfiguring thousands of base-stations.
Innovation Solution
A method and system for dynamic spectrum sharing among wireless service providers in a wireless network cloud (WNC) that predicts spectrum usage and allocates excess spectrum from one provider to another based on predicted demands, utilizing a resource-broker module to interface with resource management modules for efficient allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional base-stations with custom-built hardware and software are used, then service providers can process wireless signals reliably, but capital investment and operational costs increase significantly when scaling the network
Solution Approach 1:
The patent merges signal processing functions from distributed base-stations into a centralized cloud infrastructure. Remote Radio Heads (RRH) perform only simple radio frequency functions locally, while complex signal processing is consolidated in the cloud, reducing individual device complexity while maintaining overall system reliability through centralized management
Solution Approach 2:
The cloud infrastructure provides universal signal processing capabilities that can serve multiple service providers and handle various wireless standards. This multi-functional platform eliminates the need for each provider to maintain separate custom-built base-station hardware, reducing capital investment while maintaining processing reliability
2Reliability
If service providers are allocated dedicated spectrum through long-term contracts, then spectrum usage is stable and reliable, but dynamic sharing of spectrum among providers is prevented due to prohibitive reconfiguration overhead
Solution Approach 1:
The patent implements dynamic spectrum sharing where spectrum allocation is not fixed but adapts in real-time based on demand. The system continuously monitors spectrum usage and automatically reallocates spectrum from under-utilized providers to those with higher demand, enabling both stability through automated management and flexibility through dynamic adjustment
Solution Approach 2:
The cloud infrastructure acts as an intermediary that manages spectrum allocation between multiple service providers. It coordinates spectrum sharing without requiring direct reconfiguration of individual base-stations, eliminating prohibitive overhead while maintaining stable and flexible spectrum utilization through centralized control
3Adaptability or versatility
If thousands of base-stations are individually reconfigured for spectrum changes, then each station can adapt to local demands, but the overhead and time required for reconfiguration becomes prohibitive
Solution Approach 1:
The patent extracts complex signal processing and spectrum management functions from individual base-stations and relocates them to the cloud. This allows local RRH units to maintain simple, stable configurations while the cloud handles dynamic spectrum allocation, enabling rapid adaptation to local demands without time-consuming individual reconfigurations
Data Source
AI summary
Techniques for resource sharing among wireless service providers in a wireless network cloud (WNC) are provided. In one aspect, a method for spectrum sharing in a WNC that hosts multiple wireless service providers is provided. The method includes the following steps. A spectrum usage is predicted for each of the wireless service providers during a given future time-window. An excess amount of spectrum, if any, each of the wireless service providers will have during the given time-window is determined. The excess amount of spectrum is allocated from the wireless service providers having the excess amount of spectrum to those of the wireless service providers having a spectrum usage that will exceed an allocated spectrum capacity during the given time-window.