Full-Duplex Symbol Segmentation for Open-Loop Clutter Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in mitigating open loop clutter interference, particularly in full duplex operations at mmWave frequencies, where conventional closed loop techniques are resource-intensive and less effective.
Innovation Solution
Implementing open loop clutter interference mitigation techniques that utilize device-based and pattern-based approaches to reduce clutter interference in full duplex operations, optimizing transmission null configurations and QCL information for improved interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If closed loop clutter interference mitigation techniques are used, then interference mitigation capability is improved, but signaling overhead and resource consumption increase
Solution Approach 1:
The patent segments the TTI into multiple symbol subsets and applies different QCL information to each subset. This segmentation allows the system to mitigate clutter interference across different spatial configurations without requiring continuous closed-loop feedback for the entire TTI, thereby reducing signaling overhead while maintaining interference mitigation capability.
Solution Approach 2:
The patent transmits QCL information in advance for multiple symbol subsets before the actual data transmission occurs. This preliminary action enables the receiving device to prepare appropriate spatial configurations ahead of time, eliminating the need for real-time closed-loop feedback and reducing signaling overhead during the transmission process.
2Reliability
If closed loop clutter interference mitigation techniques are used, then interference mitigation capability is improved, but system complexity and resource requirements increase
Solution Approach 1:
By dividing the TTI into multiple symbol subsets and assigning different QCL information to each, the system reduces the complexity of real-time closed-loop processing. Each subset can be processed independently with pre-configured spatial parameters, simplifying the overall system architecture while maintaining effective interference mitigation.
Solution Approach 2:
The transmitting device provides all necessary QCL information autonomously through downlink control information, enabling the receiving device to independently determine spatial configurations without requiring complex interactive feedback mechanisms. This self-service approach reduces system complexity while maintaining interference mitigation effectiveness.
3Measurement precision
If multiple QCL information are transmitted per TTI, then spatial configuration accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent transmits multiple QCL information parameters segmented by symbol subsets within the TTI. Each QCL information set corresponds to specific symbol subsets with different spatial configurations, providing accurate spatial information where needed while avoiding redundant signaling for entire TTIs, thus balancing precision with overhead reduction.
Solution Approach 2:
Different QCL information is applied to different symbol subsets based on their specific spatial requirements. This local quality approach ensures that each subset receives the appropriate spatial configuration accuracy for its specific transmission conditions, rather than applying uniform high-precision signaling across the entire TTI, thereby reducing overall signaling overhead.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
In one aspect, a method for wireless communication includes transmitting, by a wireless communication device, symbol configuration information for a particular transmission time interval (TTI). The symbol configuration information indicates one or more subsets of symbols of the particular TTI, and the wireless communication device is operating in a full duplex mode. The method for wireless communication further includes transmitting, by the wireless communication device, Quasi-Colocation (QCL) information for one or more subsets of the symbols, where the QCL information indicates multiple QCL per TTI. Other aspects and features are also claimed and described.