Digital Unit Radio Unit Separation for Boundary Signal Diversity
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Solution Overview
Problem
Current communication base station designs that integrate both radio and digital units in a single physical system limit cell design optimization and system capacity, particularly in maximizing performance for terminals in boundary regions.
Innovation Solution
A signal processing system comprising a digital unit connected to a core system and multiple radio units, where the radio units are physically isolated and use multi-antenna technology to transmit and receive signals, determining terminal location based on signal strength ratios and controlling data transmission through shared resource elements to enhance diversity and performance in boundary regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio units and digital units are integrated in a single physical system, then system reliability is improved, but cell design optimization capability deteriorates
Solution Approach 1:
The base station is divided into separate radio units and a digital unit, allowing flexible deployment configurations. Radio units can be independently positioned at different locations while the digital unit processes signals centrally, enabling optimized cell design without sacrificing system reliability through centralized coordination.
2Area of stationary object
If multiple antennas are connected to a single base station to form cells, then coverage holes are reduced, but system capacity is limited
Solution Approach 1:
The patent introduces a spatial dimension by deploying radio units at multiple physical locations with different heights and positions. This three-dimensional arrangement allows the system to serve boundary region terminals through diverse spatial paths while maintaining efficient resource utilization for maximizing system capacity.
3Reliability
If the same resource element is used by adjacent cells for boundary region terminals, then diversity effect is maximized, but resource allocation complexity increases
Solution Approach 1:
The system applies different resource allocation strategies based on terminal location. Boundary region terminals receive signals using the same resource element from adjacent cells to maximize diversity, while other regions use standard resource allocation. This localized approach maximizes diversity effect without unnecessarily increasing overall system complexity.
Data Source
AI summary
A signal processing system and method are disclosed. The signal processing system includes a digital unit connected to a core system and a plurality of radio units physically isolated from the digital unit. The digital unit is configured to process radio digital signals. The plurality of radio units are configured to convert and amplify digital signals from the digital unit, to transmit the amplified signals to a terminal based on a multi-antenna technology using two antennas, and to receive the signals from the terminal and to transmit the same to the digital unit based on the multi-antenna technology using two antennas.