Distributed Inbuilding Relay Using Beam ID for Spatial Diversity
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Solution Overview
Problem
Implementing effective and cost-efficient inbuilding relay coverage for 5G millimeter wave networks is challenging due to high signal loss through cables and aerials, requiring complex beamforming with multiple transceivers, which increases costs and difficulties in repeaters and inbuilding solutions.
Innovation Solution
A distributed inbuilding relay apparatus using beam identification (ID) to optimize spatial diversity, comprising a distributed unit transmitting data signals with beam ID information to grouped termination units, which selectively radiate signals based on matching beam ID information, reducing the need for beamforming and minimizing the size and power consumption of active antenna units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming with multiple transceivers is implemented to compensate for mmWave signal loss, then signal coverage and quality are improved, but device complexity and cost increase significantly
Solution Approach 1:
The system segments the inbuilding coverage function into multiple distributed termination units spread throughout the building. Each termination unit independently receives and retransmits signals, eliminating the need for complex centralized beamforming while achieving comprehensive coverage through spatial distribution of multiple simple nodes
Solution Approach 2:
Instead of using one complex beamforming system, the patent deploys multiple simple termination units that copy the basic receive-and-retransmit function across different locations. Each unit is a simplified copy that collectively provides the coverage equivalent to a complex beamforming system
2Loss of energy
If multiple transceivers and array antennas are deployed for beamforming, then mmWave signal loss is compensated, but implementation cost increases
Solution Approach 1:
The patent replaces expensive, complex beamforming equipment with multiple inexpensive termination units. Each termination unit is a low-cost device that can be deployed throughout the building, sacrificing individual unit sophistication for overall system cost-effectiveness and ease of deployment
3Reliability
If beamforming technology is used to concentrate radio waves, then signal penetration through buildings is improved, but the number of required components and system complexity increase
Solution Approach 1:
The system divides the signal transmission function across multiple geographically distributed termination units. Instead of concentrating complexity in one beamforming system, each unit independently handles local signal reception and retransmission, achieving penetration through distributed presence rather than focused beam energy
Data Source
Figure 1~2A
Figure 2B
Figure 3
AI summary
The present disclosure in some embodiments relates to an inbuilding relay coverage extension method and apparatus capable of maximizing spatial diversity in place of beamforming which is a major core technology in 5G technology in an inbuilding solution based on an RF repeater and an optical repeater using the beamforming.