NCR Access Control via CU-DU Segmentation
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Solution Overview
Problem
The integration of Network-Controlled Repeaters (NCRs) into wireless communication systems with a base station divided into Centralized Unit (CU) and Distributed Unit (DU) poses a technical challenge, as existing systems struggle to effectively manage NCR access control across these units.
Innovation Solution
A wireless communication method that involves transmitting NCR support information from a first wireless communication node (e.g., gNB-DU) to a second node (e.g., gNB-CU) and receiving NCR configuration information in return. This information includes indications of which cells support NCR access, allowing for controlled access management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NCR access control is implemented in a base station divided into CU and DU, then network performance and resource allocation are optimized, but the system complexity increases due to the need for information transmission and coordination between multiple nodes
Solution Approach 1:
The base station is segmented into Centralized Unit (CU) and Distributed Unit (DU), with each unit having specific responsibilities. The DU determines NCR support capability at the cell level, while the CU performs centralized access control decisions. This segmentation allows optimized access control effectiveness while managing complexity through clear functional division.
Solution Approach 2:
The F1 interface acts as an intermediary communication channel between the CU and DU, enabling information exchange about NCR support capability and access control configurations. This standardized intermediary interface simplifies the interaction between units while maintaining effective control.
2Measurement precision
If detailed NCR support information is transmitted between nodes, then access control precision is improved, but the information transmission overhead increases
Solution Approach 1:
The DU pre-determines and reports NCR support capability information to the CU before actual access control decisions are needed. This preliminary action allows the CU to make informed access control decisions without requiring continuous detailed information transmission during operation, reducing overhead while maintaining precision.
Solution Approach 2:
The system uses different levels of detail for NCR support information based on operational context. Capability information is transmitted in a condensed format during setup, while access control decisions use this pre-exchanged information efficiently. This parameter optimization balances precision requirements with information transmission overhead.
Data Source
AI summary
A wireless communication method includes transmitting, by a first wireless communication node. Network-Controlled Repeater (NCR) support information to a second wireless communication node; and receiving NCR configuration information, by the first wireless communication node from the second wireless communication node.