Coexistence Manager for Secondary Networks in White Space
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Solution Overview
Problem
Current technologies face challenges in enabling coexistence of secondary networks in shared radio frequency bands without interference, particularly in unassigned and white space frequencies, due to lack of efficient methods for resource sharing and management.
Innovation Solution
A method and apparatus for providing wireless devices with suitable operating parameters through device management information, including allowed frequencies and transmission powers, to facilitate coexistence with neighboring networks in unassigned frequency bands, using a network controller and control node to manage and share resources effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If unlicensed transmitters operate in white space frequencies, then spectrum utilization is improved, but interference with licensed services may occur
Solution Approach 1:
The system performs preliminary actions by querying a database to identify available white space frequencies before transmission, and by requiring spectrum sensing to detect incumbent signals. This advance preparation prevents interference before it occurs, enabling safe spectrum utilization.
Solution Approach 2:
The system implements feedback mechanisms through spectrum sensing that continuously monitors for incumbent signals. When interference is detected, the unlicensed transmitter receives feedback to adjust or cease transmission, dynamically preventing harmful interference while maintaining spectrum utilization.
2Reliability
If device management information is provided for coexistence management, then network coexistence is improved, but system complexity increases
Solution Approach 1:
The patent introduces a coexistence manager as an intermediary component that handles the complex tasks of database querying, spectrum sensing coordination, and transmission parameter management. This mediator shields individual transmitters from complexity while ensuring reliable coexistence through centralized control.
Data Source
AI summary
Method, apparatus, and computer program product embodiments are disclosed to provide a wireless device with suitable operating parameters for wireless resource sharing with heterogeneous wireless networks to enable coexistence of secondary networks in a shared band environment. An example embodiment includes a method, comprising: receiving a request from a wireless network, requesting device management information for coexistence within an unassigned frequency band with zero or more neighboring wireless networks of the wireless network; and providing the requested device management information for the wireless network, based on at least location of the wireless network, the device management information including at least allowed frequency and transmission power.