CU-DU Interference Processing for TDD Atmospheric Ducting
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Solution Overview
Problem
The atmospheric ducting interference in TDD networks affects a large number of base stations over extended periods, causing uplink interference and requiring unified management in the 5G era.
Innovation Solution
A processing method and communication device for managing remote interference under the CU-DU architecture, involving the determination of base station set IDs and RIM-RS resource configurations, with coordinated interference management between CU and DU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If personalized interference prevention schemes are used in 4G era, then remote base station interference can be prevented for individual operators, but unified management across global TDD networks cannot be achieved
Solution Approach 1:
The patent implements a universal remote interference management mechanism that operates across different operators and regions through the 3GPP RIM framework. The gNB grouping and set ID assignment enable a single standardized approach to manage atmospheric ducting interference globally, replacing operator-specific personalized schemes with a unified system that works across all TDD networks worldwide.
2Length of stationary object
If downlink signal transmission time is extended to cover large distances, then atmospheric ducting interference can be transmitted over 150-320km, but uplink reception at local base stations is interfered with
Solution Approach 1:
The patent employs feedback mechanisms where victim base stations detect atmospheric ducting interference and transmit notifications to the core network, which then sends control information back to affected gNBs. This closed-loop feedback system enables dynamic adjustment of downlink transmission parameters to prevent uplink reception interference while maintaining long-distance signal propagation capabilities.
Solution Approach 2:
The system dynamically adjusts downlink transmission parameters based on real-time interference conditions. Through the RIM framework, gNBs can modify their transmission characteristics when atmospheric ducting is detected, allowing the system to adapt between long-distance transmission modes and interference-free operation modes as needed.
3Adaptability or versatility
If gNB grouping is implemented for unified interference management, then coordinated interference management across multiple base stations is enabled, but system complexity increases
Solution Approach 1:
The patent segments the gNB grouping management into distinct functional components: victim base station detection, core network coordination, and aggressor gNB execution. This segmentation divides the complex coordinated management task into manageable segments that can be handled by different network elements, reducing the complexity burden on any single component while enabling unified interference management across the network.
Data Source
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AI summary
A processing method and a processing device are provided. The processing method includes determining, by a first device, a base station set ID and/or a configuration of an RIM-RS resource, and the first device is an aggressor base station or a victim base station.