Dynamic TDD Interference Management via Priority-Based Configuration
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing cross-link interference (CLI) in dynamic TDD environments, particularly when supporting multiple multiplexing modes, which affects communication quality and capacity.
Innovation Solution
A method and apparatus for improving interference management by efficiently measuring and reporting CLI, involving the comparison of priorities between different configuration information sets to determine the appropriate downlink-uplink configuration for resources, thereby resolving collisions and optimizing CLI management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic TDD environment is used to support multiple multiplexing modes, then communication capacity and coverage are improved, but cross-link interference management becomes more difficult
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting TDD uplink-downlink configuration parameters based on CLI measurement results. The system changes the timing configuration parameters to resolve CLI collisions, transforming the interference problem into a parameter optimization problem that maintains high communication capacity while managing interference through controlled parameter variations.
Solution Approach 2:
The patent implements dynamics by enabling real-time adaptation of TDD configurations based on measured CLI conditions. The system dynamically switches between different multiplexing modes and adjusts uplink-downlink slot configurations in response to changing interference conditions, allowing the network to maintain optimal performance across varying traffic and interference scenarios.
2Reliability
If CLI measurement and reporting scheme for dynamic TDD is applied, then interference control is improved, but the scheme is not suitable for communication nodes supporting multiple multiplexing modes
Solution Approach 1:
The patent achieves universality by designing a CLI measurement and reporting mechanism that functions across multiple multiplexing modes (non-TDM, simultaneous DU/MT operation, and dynamic TDD). The same measurement framework and reporting procedures are universally applied regardless of the specific multiplexing mode, eliminating the need for mode-specific implementations while maintaining interference control effectiveness.
Solution Approach 2:
The patent applies segmentation by dividing the interference management process into distinct measurement phases and reporting phases that can be independently configured for different multiplexing modes. The CLI measurement procedures are segmented into specific measurement opportunities and reporting triggers that adapt to the timing structures of different multiplexing modes, allowing the same core mechanism to serve multiple functions.
3Reliability
If IAB node performs simultaneous transmission and reception in non-TDM mode, then communication quality is improved, but cross-link interference is generated
Solution Approach 1:
The patent implements feedback by establishing a closed-loop CLI management system where the IAB node continuously measures CLI, reports measurements to the network, and receives configuration adjustments in response. This feedback mechanism allows the system to detect CLI generation from simultaneous transmission-reception operations and automatically adjust configurations to mitigate interference while maintaining the benefits of non-TDM operation.
Solution Approach 2:
The patent applies preliminary anti-action by proactively configuring CLI measurement opportunities and reporting requirements before CLI problems arise. The system preemptively establishes measurement procedures and configuration rules that prevent CLI from escalating into harmful interference, allowing the network to maintain simultaneous transmission-reception operations while pre-planning interference mitigation strategies.
Data Source
AI summary
An operation method of a first device may comprise: receiving, from a second device, first configuration information signaled for CLI-related procedures; receiving, from the second device, second configuration information signaled for operating a multiplexing operation of the first device; in response to recognizing, with respect to a first resource, a collision between first DL-UL configuration information indicated by the first configuration information and second DL-UL configuration information indicated by the second configuration information, comparing priorities of the first DL-UL configuration information and the second DL-UL configuration information; and determining a DL-UL configuration applied to the first resource based on the compared priorities.