Position-Assisted Cross-Link Interference Measurement in TDD Networks
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Solution Overview
Problem
Current techniques for managing cross-link interference in TDD wireless communication systems are inefficient, leading to suboptimal use of communication resources due to the lack of effective interference management strategies that consider the geographical location of user equipment (UEs) in neighboring cells.
Innovation Solution
The proposed solution involves a position-assisted cross-link interference measurement method where UEs transmit their location information to the base station, allowing for the configuration of cross-link interference measurement procedures based on their specific locations, thereby optimizing the measurement process by bypassing unnecessary measurements and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current techniques for managing cross-link interference are used, then the system can perform basic interference measurement, but the use of communication resources is inefficient
Solution Approach 1:
The patent applies local quality by configuring CLI measurement procedures specifically for UEs based on their geographical location and TDD configuration. Instead of treating all UEs uniformly, the system tailors measurement configurations to local conditions (location-based interference patterns, cell-specific TDD settings), thereby improving resource utilization efficiency while maintaining reliable interference management for each UE's specific context
Solution Approach 2:
The system dynamically adjusts CLI measurement configurations based on real-time UE location information and TDD configuration changes. The network can modify measurement parameters, triggering conditions, and measurement slots according to current network conditions and UE positions, enabling adaptive resource allocation that improves both productivity and reliability
2Productivity
If position-assisted CLI measurement is implemented, then measurement efficiency is improved, but additional location information processing is required
Solution Approach 1:
The patent applies preliminary action by having UEs report their location information to the network in advance before CLI measurements are performed. The network pre-processes this location data to determine appropriate measurement configurations, triggering conditions, and resource allocation strategies. This advance preparation reduces the complexity of real-time processing by establishing measurement frameworks before actual measurement events occur
Solution Approach 2:
The network acts as an intermediary that processes location information and translates it into appropriate CLI measurement configurations. Rather than requiring UEs to independently handle complex location-based processing, the network serves as a mediator that receives location data, performs the necessary analysis, and generates simplified measurement instructions for the UEs, thereby improving measurement efficiency while managing processing complexity centrally
3Loss of information
If all UEs perform CLI measurements, then complete interference data is collected, but signaling overhead and processing time increase
Solution Approach 1:
The patent applies local quality by selectively configuring CLI measurements based on each UE's specific location and interference risk profile. Instead of mandating measurements for all UEs uniformly, the system identifies which UEs are actually exposed to cross-link interference based on their geographical position and TDD configuration, thereby collecting complete interference data only where needed and reducing overall processing time
Solution Approach 2:
The system applies partial action by implementing CLI measurements only for UEs that meet specific criteria (e.g., located in cells with conflicting TDD configurations, experiencing potential interference). This selective approach ensures that complete interference data is collected for affected UEs while avoiding unnecessary measurements for UEs not at risk, thereby reducing signaling overhead and processing time without sacrificing data completeness for relevant cases
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. The method includes receiving, from a first base station, a set of cross-link interference measurement configurations associated with location information, performing a cross-link interference measurement procedure on signals received based on the set of cross-link interference measurement configurations, or the location information, or a location of the first UE, or a combination thereof, and transmitting, to the first base station, a measurement value based on the performed cross-link interference measurement procedure.