TDD Split Configuration for Cross-Link Interference Mitigation
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Solution Overview
Problem
Wireless communication systems face challenges in mitigating inter-node interference, particularly due to cross-link interference between network nodes, which affects the efficiency and reliability of communication in wireless networks.
Innovation Solution
A time division duplexing (TDD) split configuration is implemented based on compatible or non-compatible beam pairs, with specific restriction durations to manage interference, allowing network nodes to communicate effectively with user equipment while minimizing cross-link interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If TDD split configuration is implemented based on beam pair compatibility, then inter-node interference is reduced, but system complexity increases due to beam pair assessment and configuration management
Solution Approach 1:
The patent changes the TDD configuration parameters (split configuration, restriction durations) based on beam pair compatibility assessments. By dynamically adjusting these parameters according to measured interference levels and beam characteristics, the system reduces cross-link interference while managing complexity through parameter optimization rather than structural complexity
Solution Approach 2:
The patent implements a feedback mechanism where network nodes assess beam pair compatibility, measure interference levels, and use this information to determine appropriate TDD split configurations. The configuration is based on feedback from interference measurements and beam pair assessments, allowing the system to adapt to changing conditions and reduce interference while maintaining manageable complexity through intelligent control
2Reliability
If TDD split configuration with restriction durations is applied, then communication reliability is improved by reducing missed packets, but network resource flexibility is reduced
Solution Approach 1:
The patent applies dynamic TDD split configurations with different restriction durations (first restriction duration for uplink, second restriction duration for downlink) based on beam pair compatibility and interference conditions. This dynamic approach improves reliability by protecting vulnerable transmissions while maintaining network flexibility through adaptive configuration that can be adjusted based on changing traffic and interference conditions
Solution Approach 2:
The patent applies different restriction durations and TDD split configurations to different beam pairs and directional links based on their specific compatibility characteristics and interference profiles. This localized approach ensures that reliability improvements are applied where needed (in directions with cross-link interference) while preserving network flexibility in other directions and time resources
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may obtain a time division duplexing (TDD) split configuration, for inter-node interference mitigation, that is based at least in part on at least one of a subset of compatible beam pairs of a set of beam pairs or a subset of non-compatible beam pairs of the set of beam pairs, and that indicates a first restriction duration and a second restriction duration, a beam pair of the set of beam pairs comprising an uplink beam associated with the first network node and a downlink beam associated with a second network node. The first network node may communicate with at least one user equipment (UE) based at least in part on the TDD split configuration for inter-node interference mitigation. Numerous other aspects are described.