Distributed Radiohead Daisy Chains for Dense Wireless Coverage
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Solution Overview
Problem
Current wireless communication systems face challenges in densification due to limitations in placing radios and antennas, including interference management, aesthetic concerns, and regulatory restrictions, which hinder efficient and rapid deployment while maintaining optimal performance.
Innovation Solution
The implementation of a multi-user multi-antenna system (MU-MAS) using daisy-chained network and power cables with small distributed radioheads, leveraging Distributed-Input Distributed-Output (DIDO) technology to create Virtual Radio Instances (VRIs) that deliver multiple simultaneous non-interfering data streams within the same frequency band, allowing for flexible and efficient radio deployments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antenna and radio placements are used, then coverage and signal strength are improved, but deployment complexity and regulatory restrictions increase
Solution Approach 1:
The system segments the traditional monolithic base station into multiple distributed radioheads, each capable of independent operation. These radioheads can be deployed separately across different locations, simplifying the overall deployment process while maintaining comprehensive coverage through coordinated operation.
Solution Approach 2:
The patent introduces a centralized controller as an intermediary that manages multiple distributed radioheads. This controller coordinates the radioheads to work together as a unified system, ensuring proper signal strength and coverage while allowing each radiohead to be deployed independently without complex interconnections.
2Productivity
If more radios and antennas are deployed for densification, then network capacity is improved, but interference management and aesthetic concerns worsen
Solution Approach 1:
Each radiohead is designed to operate independently with localized signal transmission. The system applies local quality by allowing each distributed radiohead to serve its specific area optimally, reducing interference with other radioheads while maintaining high network capacity through aggregated performance of multiple units.
Solution Approach 2:
The patent transitions from two-dimensional antenna arrays to three-dimensional spatial distribution of multiple radioheads. By distributing radioheads across different physical locations and heights, the system increases network capacity through spatial multiplexing while reducing interference through natural spatial separation.
3Reliability
If conventional base station deployments are used, then network performance is improved, but permitting time and installation time increase
Solution Approach 1:
The radioheads are designed as compact, standardized units that can be rapidly deployed and replaced. Their simplified form factor and standardized interfaces reduce installation complexity and time, while their distributed architecture maintains network performance through redundancy and load distribution.
Solution Approach 2:
The system allows for preliminary deployment of radioheads in locations with minimal regulatory oversight before formal permitting is completed. The modular design enables phased deployment where radioheads can be installed and activated incrementally, reducing overall permitting time while maintaining network performance through progressive capacity addition.
Data Source
AI summary
Systems and methods are described to create radio daisy chains for convenient and aesthetically pleasing high-density radio deployments.