60 GHz MIMO Fronthaul Transceiver for Fiber-Free 5G Deployment
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Solution Overview
Problem
The challenge of deploying cellular networks with high capacity and density in locations that are not pre-wired, particularly in urban environments, is exacerbated by the need for costly and time-consuming fiber installations, which limit installation flexibility and increase deployment costs.
Innovation Solution
A 60 GHz wireless communication system using a multiple-input multiple-output transceiver, which includes a system-on-chip device with advanced integrated circuits, enabling high-throughput, low-latency fronthaul transmissions, and flexible installation options by eliminating the need for extensive fiber cabling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fiber installations are used for cellular network deployment, then network capacity and reliability are improved, but deployment cost and time increase significantly
Solution Approach 1:
The patent replaces the mechanical fiber optic cable installation system with a wireless millimeter wave communication system. Instead of physically laying fiber cables through trenches and conduits, the system uses wireless signals in the 28 GHz or 39 GHz bands to transmit fronthaul traffic between remote radio units and baseband processing units, eliminating the need for extensive civil works while maintaining network reliability
Solution Approach 2:
The patent introduces wireless millimeter wave signals as an intermediary medium to carry fronthaul traffic. The system uses wireless fronthaul interfaces to transfer data between radio units and distributed units, serving as a substitute for the traditional fiber optic cable intermediary, thereby reducing deployment complexity and time while preserving communication reliability
2Productivity
If fiber installations are used for cellular network deployment, then network capacity is improved, but deployment cost increases
Solution Approach 1:
The patent replaces the expensive mechanical fiber installation process with wireless millimeter wave communication infrastructure. By eliminating the need for fiber optic cables, trenches, and associated civil engineering work, the system significantly reduces material costs, labor costs, and project overhead while delivering high network capacity through wireless fronthaul interfaces
Solution Approach 2:
The patent changes the physical parameter of signal transmission from guided electromagnetic waves in fiber optic cables to radiated electromagnetic waves in the millimeter wave spectrum. This parameter change enables high-capacity communication without the infrastructure costs of fiber installation, as the wireless system uses existing radio frequency spectrum resources instead of requiring new physical media
3Stability of the object's composition
If extensive fiber cabling is installed, then connection stability is improved, but installation flexibility is reduced
Solution Approach 1:
The patent introduces dynamic wireless fronthaul interfaces that can be rapidly deployed, reconfigured, and relocated without physical infrastructure changes. The wireless millimeter wave system allows network operators to dynamically adjust radio unit positions, change service locations, and adapt to changing network demands by simply reconfiguring wireless parameters rather than reinstalling physical fiber cables, thereby enhancing installation flexibility while maintaining connection stability through robust wireless protocols
Data Source
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AI summary
An example system-on-chip (SoC) device for a communication system includes a peripheral component interconnect express (PCIe) interface configured to receive data from a backhaul field programmable gate array (FPGA) of the communication system, and a producer port linked with a consumer port through direct memory access (DMA). Data received by the PCIe interface is assigned to the producer port. The device includes dual hardware media access controls (MACs) configured to consume the data assigned to the producer port, and at least one processor configured to supply the data to a wireless interface for transmission to another wireless communication device of the communication system at a frequency of at least sixty Gigahertz.