Preemption Indication for Multi-TRP Wireless Transmission
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Solution Overview
Problem
Current wireless communication systems lack efficient mechanisms for preemption indication in multi-TRP (Transmission and Reception Point) environments, leading to potential interference and resource allocation inefficiencies.
Innovation Solution
The system receives a downlink control information (DCI) message via a physical downlink control channel (PDCCH) with a transmission configuration indicator (TCI) state associated with a Transmission Reception Point (TRP), allowing for preemption of reference signals or channels based on a preemption indication, and monitors for preemption indications across multiple TCI states and TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If preemption indication is implemented in multi-TRP environments, then resource allocation efficiency is improved and interference is minimized, but system complexity increases due to multiple TCI states and CORESET groups
Solution Approach 1:
The patent segments the preemption indication mechanism by associating different TCI states with different CORESET groups, allowing independent configuration and monitoring of preemption indications for each TRP. This segmentation enables the UE to handle multiple TRPs without overwhelming complexity by processing them in organized groups.
Solution Approach 2:
The patent introduces TCI states as intermediary elements that link TRPs to specific CORESET groups. These TCI states act as mediators that carry preemption indication information, allowing the system to manage multiple TRPs through a structured intermediate layer rather than direct complex interactions.
2Object-affected harmful factors
If monitoring for preemption indications across multiple TCI states is implemented, then interference minimization is improved, but detection and measurement complexity increases
Solution Approach 1:
The patent segments the monitoring task by associating preemption indications with specific CORESET groups and TCI states. This segmentation allows the UE to monitor for preemption indications in an organized manner across multiple TRPs, reducing detection complexity through structured group management.
Solution Approach 2:
The patent implements feedback mechanisms where the UE monitors preemption indications and adjusts its reception accordingly. This feedback loop enables dynamic adaptation to changing transmission conditions across multiple TRPs, improving interference minimization while managing detection complexity through systematic response protocols.
Data Source
AI summary
Systems, devices, and techniques for preemption indication in wireless communication systems are described. A described technique includes receiving, by a User Equipment (UE) via a physical downlink control channel (PDCCH), a downlink control information (DCI) message in a Control Resource Set (CORESET) configured with a transmission configuration indicator (TCI) state, the TCI state being associated with a transmission reception point (TRP), the DCI message comprising a downlink preemption indication for the TCI state; and applying preemption to a reference signal or a channel associated with the TCI state responsive to the downlink preemption indication.