Integrated WLAN Spectrum Sharing via iWAG Coordination
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Solution Overview
Problem
The increasing bandwidth demand in wireless networks due to the popularity of wireless devices leads to congestion and inefficient spectrum usage, particularly in areas served by multiple wireless networks, where interference and capacity issues are prevalent.
Innovation Solution
The integration of multiple radios into a single network entity, forming an integrated wireless local area network (iWLAN) that enables spectrum sharing among multiple wireless services, using techniques such as Authorized Shared Access Spectrum and virtualized radio resource management through the Integrated WLAN Access Gateway (iWAG), to optimize spectrum usage and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless networks operate in the same area simultaneously, then wireless service coverage is improved, but spectrum interference and congestion worsen
Solution Approach 1:
The patent merges multiple independent wireless networks into a single integrated wireless network entity that coordinates spectrum usage. Multiple radios are integrated into one network entity that can operate independently on different channels while forming a unified basic service set, allowing coordinated spectrum sharing and reducing interference between previously independent networks
Solution Approach 2:
The integrated wireless network entity acts as an intermediary that mediates spectrum access between different wireless services. It manages channel allocation and coordination between multiple radios and wireless services, preventing direct interference while maintaining coverage for multiple services
2Adaptability or versatility
If multiple radios operate independently on different channels, then wireless service diversity is improved, but network complexity increases
Solution Approach 1:
Multiple radios are merged into a single integrated network entity that shares common control and management functions. The integration allows multiple radios to operate independently on different channels while sharing a unified management structure, reducing the complexity that would arise from completely independent radio operations
Solution Approach 2:
The integrated network entity provides universal management functions that serve multiple radios and wireless services through a single control mechanism. This multi-functional approach allows the system to handle diverse wireless services while maintaining a standardized management interface, reducing overall network complexity
3Productivity
If spectrum sharing is implemented among multiple wireless services, then spectrum usage efficiency is improved, but coordination overhead increases
Solution Approach 1:
Spectrum management functions are merged into the integrated network entity that directly controls the radios performing the sharing. This consolidation eliminates the need for complex external coordination protocols between separate networks, reducing coordination overhead while maintaining efficient spectrum usage through unified control
Data Source
AI summary
A wireless communication system includes a database that holds spectral usage and availability information, an access point that operates to provide wireless services from a plurality of service operators and a gateway that receives a wireless spectrum allocation request from a service operator, determines spectrum availability by consulting the database, responds to the service operator with a grant or a denial based on the determined spectrum availability, and controls the access point to provide wireless service according to the response to the service operator.