5G Over Coax Small Cells for Symmetric MIMO Data Delivery
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Solution Overview
Problem
Existing hybrid fiber coax (HFC) networks face limitations in data rates and bandwidth due to the use of amplifiers and coaxial cable infrastructure, requiring costly upgrades to optical fiber or DOCSIS 4.0 technology, which are expensive and time-consuming, and end-user equipment cannot utilize the full capacity of delivered capacity symmetrically.
Innovation Solution
Implementing a small cell apparatus with a port for coaxial cables, impedance matching, diplexer, signal converter, MIMO layers, and antenna to enhance data transmission, leveraging existing coaxial infrastructure for high-speed data services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If existing HFC network infrastructure with amplifiers and coaxial cable is used, then network coverage and ease of operation are maintained, but data rates and bandwidth are limited
Solution Approach 1:
The network is segmented into small cell nodes distributed throughout the service area, each capable of providing high-speed wireless access. This segmentation allows the system to achieve high data rates through wireless MIMO technology while maintaining the simplicity of the existing coaxial infrastructure for backhaul connectivity.
Solution Approach 2:
The patent transitions from traditional wired HFC access to wireless access using small cells with MIMO antennas. This dimensional change enables high-speed data transmission through spatial multiplexing and beamforming capabilities while retaining the existing coaxial infrastructure for network connectivity.
2Speed
If optical fiber or DOCSIS 4.0 technology is deployed to achieve high data rates, then data rates and bandwidth are improved, but capital expenditure and implementation time increase
Solution Approach 1:
The system leverages the existing coaxial cable infrastructure to provide backhaul connectivity for small cells, eliminating the need for costly optical fiber deployment. The small cells utilize wireless MIMO technology to deliver high-speed access, making the network self-sufficient with respect to high-speed delivery without requiring expensive infrastructure upgrades.
Solution Approach 2:
The patent changes the operational parameters of the existing coaxial infrastructure by enabling it to support high-frequency wireless signals for small cell backhaul. This parameter change allows the legacy infrastructure to serve dual purposes: traditional cable access and wireless small cell connectivity, avoiding the need for complete infrastructure replacement.
3Adaptability or versatility
If traditional HFC network architecture is used, then ease of operation and network coverage are maintained, but symmetric bandwidth allocation and data rate capacity are limited
Solution Approach 1:
The small cell architecture enables dynamic bandwidth allocation where each cell can independently adjust its spectral resources based on local traffic conditions. This dynamic capability provides flexible symmetric bandwidth allocation while maintaining simple operation through automated network management and centralized coordination.
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
Enables optimized delivery of ultra-high data rate services symmetrically, leveraging existing coaxial cable infrastructure, reducing latency and cost, and providing flexible bandwidth allocation.
Implementation Method 1
an impedance matching component configured to sufficiently match the signal
Implementation Method 2
a diplexer configured to separate the signal into a separated signal
Implementation Method 3
a signal converter configured to increase and/or decrease the separated signal to an emission signal at an emission frequency
Implementation Method 4
a transceiver node configured to map the emission signal to two or more multiple-input multiple-output (MIMO) layers
Implementation Method 5
an antenna configured to transmit the two or more MIMO layers
Data Source
AI summary
Apparatus and methods are disclosed. The small cell apparatus includes a port to interface with a coaxial cable, the coaxial cable configured to transmit a signal from a radio unit (RU); an impedance matching component configured to sufficiently match the signal; a diplexer configured to separate the signal into a separated signal; a signal converter configured to increase and/or decrease the separated signal to an emission signal at an emission frequency; a transceiver node configured to map the emission signal to two or more multiple-input multiple-output (MIMO) layers; and an antenna configured to transmit the two or more MIMO layers.