Centralized Unit Center for Resource Multiplexing in C-RAN
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Solution Overview
Problem
Current centralized radio access network (C-RAN) architectures face challenges in meeting high throughput requirements due to transmission bottlenecks, resource waste, high overhead, and poor real-time performance, particularly in the separation of centralized units (CUs) and distributed units (DUs).
Innovation Solution
An integration system and method for multiple centralized units (CUs) that configures a CU center to share function modules at corresponding levels, providing function services across logical CUs, breaking resource constraints and enabling resource multiplexing, thereby alleviating resource waste and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple CUs are centrally deployed to alleviate transmission bottlenecks, then transmission performance is improved, but resource waste and high overhead occur
Solution Approach 1:
The patent merges multiple CUs into a single CU center that integrates multiple logical CUs. This consolidation allows multiple CUs to share common function modules (such as RRC, PDCP, and RLC layers) while maintaining logical separation, thereby improving transmission performance without proportionally increasing resource consumption.
Solution Approach 2:
The CU center implements universal function modules that can serve multiple logical CUs simultaneously. These shared function modules provide multi-functional capabilities, allowing a single physical infrastructure to support multiple logical entities, thus reducing resource waste while maintaining service quality.
2Adaptability or versatility
If CUs are separated from DUs according to protocol, then architecture flexibility is improved, but transmission bottleneck occurs
Solution Approach 1:
The patent segments the base station into CU and DU parts with clear functional separation. The CU handles higher-layer protocols (RRC, PDCP, RLC) while the DU handles lower-layer functions (MAC, PHY), allowing independent optimization of each segment while maintaining overall system flexibility and avoiding transmission bottlenecks through proper interface design.
Solution Approach 2:
The F1 interface acts as an intermediary between CU and DU, enabling flexible communication while maintaining efficient data transmission. This standardized interface allows the separated architecture to maintain adaptability while avoiding transmission bottlenecks through optimized signaling and data flow management.
3Area of stationary object
If multiple CUs are deployed independently, then service coverage is improved, but overhead and complexity increase
Solution Approach 1:
Multiple logical CUs are merged into a single CU center infrastructure, reducing system overhead and complexity while maintaining the ability to provide wide service coverage. The shared function modules and common management plane eliminate redundant components that would otherwise increase system complexity.
Data Source
AI summary
The present disclosure provides an integration method for multiple centralized units, an integration device for multiple centralized units, and an integration system for multiple centralized units. The integration system for multiple centralized units includes a centralized unit center, the centralized unit center is configured to integrate multiple logical centralized units, the multiple logical centralized units share one or more function modules at corresponding levels according to a preset service requirement, and the function modules at the corresponding levels are configured to provide function services at the corresponding levels for the logical centralized units.