Millimeter-Wave Surface-Wave Communications on Power Lines
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Solution Overview
Problem
The existing wireless infrastructure is overwhelmed by increasing data usage from smartphones and portable devices, leading to high costs for small cell deployment, as traditional methods like fiber and cable installation are costly and inefficient for providing network connectivity to base stations and distributed antennas due to limited bandwidth.
Innovation Solution
A surface-wave communication system using millimeter-wave frequencies (30 GHz-300 GHz) that leverages existing power line infrastructure to transmit data as guided waves along wires, eliminating the need for new fiber and cable installations by utilizing coupling devices to emit and receive millimeter-wave transmissions on power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fiber and cable installation is used to provide network connectivity to base stations and distributed antennas, then reliable data transmission is achieved, but installation costs and device complexity increase significantly
Solution Approach 1:
The patent uses existing power lines as an intermediary medium to transmit millimeter-wave signals. Instead of installing new fiber or cable infrastructure, the system leverages the already-deployed power line network as a conduit for wireless backhaul communication, thereby avoiding high installation costs while maintaining connectivity reliability
Solution Approach 2:
The power lines serve multiple functions: their original purpose for electrical power distribution is maintained, while simultaneously they function as transmission media for millimeter-wave wireless signals. This multi-functionality eliminates the need for dedicated communication infrastructure, reducing overall system complexity and installation costs
2Adaptability or versatility
If traditional wireless infrastructure is expanded to handle increasing data usage, then network coverage is improved, but bandwidth limitations and infrastructure costs worsen
Solution Approach 1:
The system transitions from traditional lower-frequency wireless communication to millimeter-wave frequencies (30-300 GHz), fundamentally changing the frequency parameter to access previously unavailable high-bandwidth spectrum. This enables significantly higher data rates and capacity while utilizing existing power line infrastructure for signal transmission
Solution Approach 2:
The patent guides millimeter-wave signals along the surface of power lines rather than traditional free-space propagation or wired fiber transmission. This surface-wave propagation mode represents a new dimension of signal transmission that combines wireless flexibility with guided-path reliability, enabling network expansion without conventional infrastructure
3Productivity
If small cell deployment is pursued to provide coverage for smaller areas, then mobile bandwidth is improved, but deployment expense increases
Solution Approach 1:
The system allows existing power line infrastructure to serve dual purposes without requiring additional dedicated communication infrastructure. By enabling millimeter-wave transmission over power lines, small cells can be deployed using already-installed utilities, making the deployment process self-sufficient regarding transmission media and dramatically reducing per-node installation costs
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
This approach provides high-bandwidth connectivity to distributed base stations and antennas without the expense of new infrastructure, improving network efficiency and reducing installation costs while maintaining reliable data transmission across various environmental conditions.
Implementation Method 1
emitting the transmission as a guided wave on a surface of a wire via a coupling device
Implementation Method 2
generating a transmission based on the carrier-wave signal and the signal, wherein the transmission is a millimeter-wave transmission
Data Source
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AI summary
A millimeter-wave surface-wave communications system to provide network connectivity for a backhaul network and a distributed antenna system. Rather than building new structures, and installing additional fiber and cable, embodiments described herein disclose using high-bandwidth, millimeter-wave communications propagating over existing power line infrastructure. The wavelength of the transmission is comparable in size or smaller than the circumference of the power lines.