Dynamic TDD Configuration for Interference Mitigation
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Solution Overview
Problem
Time-division duplexing (TDD) configurations in wireless communication systems can cause significant interference between nearby cells with different configurations, leading to reduced network performance and throughput, especially during events with increased uplink traffic.
Innovation Solution
A control device generates traffic demand predictions to dynamically configure TDD settings for cells with high uplink traffic, and identifies other cells to apply interference mitigation configurations, such as slot scheduling adjustments or antenna tilting, to minimize cross-link interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If TDD configurations are dynamically adjusted to meet traffic demands, then adaptability is improved, but interference between nearby cells increases
Solution Approach 1:
The patent applies local quality by allowing different TDD configurations in different geographical locations. Specifically, a first TDD configuration is applied in a first geographical area while a second TDD configuration is applied in a second geographical area, enabling each region to be optimized for its local traffic patterns while maintaining overall system coordination
Solution Approach 2:
The patent implements dynamics by enabling real-time switching between different TDD configurations based on traffic conditions. The system can dynamically adjust the TDD configuration in response to changing traffic demands, allowing the network to adapt to varying uplink and downlink traffic ratios throughout the day
2Productivity
If TDD configurations are made flexible to handle varying traffic ratios, then productivity is improved, but network performance deteriorates due to interference
Solution Approach 1:
The patent resolves this contradiction by applying different TDD configurations to different geographical areas based on their specific traffic characteristics. This allows high-productivity configurations to be applied where needed while maintaining network performance through localized optimization rather than uniform configuration changes
Solution Approach 2:
The patent segments the network into different geographical areas with different TDD configurations. By dividing the network into distinct regions (first geographical area, second geographical area), each segment can be independently optimized for its traffic patterns while the overall network maintains coordination and performance
Data Source
AI summary
In some implementations, a device may generate a traffic demand prediction associated with a radio access network (RAN). The device may determine, based on the traffic demand prediction, that a first set of cells of the RAN are to be configured with a first time-division duplexing (TDD) configuration that differs from a second TDD configuration configured for one or more other cells of the RAN. The device may identify a second set of cells of the RAN that are to be configured to mitigate interference in the first set of cells. The device may provide an interference mitigation configuration to the second set of cells to cause the second set of cells to mitigate interference in the first set of cells.