RF Repeaters for Added MIMO Spatial Channels in Sparse Environments
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Solution Overview
Problem
Real-world environments often lack sufficient ambient reflective structures, limiting the number of usable spatial layers for MIMO communication between a base station and user equipment to no more than two orthogonal RF polarizations, which restricts channel diversity and bandwidth enhancement.
Innovation Solution
Employing RF signal repeaters to create additional physical channels by acting as intermediaries between the base station and user equipment, thereby increasing channel diversity and enabling more spatial layers for communication, even in environments with limited reflective structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RF signal repeaters are employed to create additional physical channels, then channel diversity and spatial layers are increased, but device complexity and system cost increase
Solution Approach 1:
The patent employs RF signal repeaters as intermediary devices positioned between the base station and user equipment to create additional physical transmission channels. These repeaters receive signals from the base station, process them, and retransmit them to user equipment, thereby creating virtual reflective structures that increase channel diversity and enable more spatial layers for MIMO communication without requiring additional ambient reflective structures.
2Productivity
If RF signal repeaters are deployed to enhance MIMO communication in high user equipment density areas, then bandwidth and communication efficiency are improved, but loss of energy and operational cost increase
Solution Approach 1:
The patent deploys RF signal repeaters selectively in specific geographic areas identified as hotspots with high user equipment density, rather than deploying them network-wide. This partial deployment approach allows the system to achieve bandwidth and communication efficiency improvements in areas where they are most needed, while minimizing overall energy consumption and operational costs by limiting repeater operation to only those locations where additional spatial layers provide measurable performance benefits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of RF signal repeaters enhances MIMO communication by providing additional paths and increasing channel diversity, allowing for improved bandwidth and communication efficiency, especially in areas with high user equipment density, such as hotspots.
Implementation Method 1
receiving, from a MIMO base station that is communicating with first MIMO user equipment via a first downlink MIMO spatial channel corresponding to a first path from the MIMO base station to the first MIMO user equipment, downlink information to be communicated to second MIMO user equipment via a second downlink MIMO spatial channel corresponding to a second path from the MIMO base station through the wireless repeater to the second MIMO user equipment
Data Source
AI summary
A wireless communication network such as a 5G communication network can use MIMO technologies to enhance bandwidth between a wireless communications base station and one or more user equipment devices within a service area of the base station. RF signal repeaters can be utilized to provide one or more additional physical channels for communication between the MIMO base station and the MIMO user equipment. These RF signal repeaters can be regarded as increasing the MIMO channel diversity within the ambient environment.