Multi-TRP UE Sidelink Resource Exclusion via TCI State
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Solution Overview
Problem
Wireless communication systems with multiple transmission and receive points (TRPs) face challenges in efficiently reserving resources for future transmissions across different TRPs, leading to inconsistent link quality and network congestion issues.
Innovation Solution
A method where a multi-TRP UE uses sidelink control information associated with a first TCI state to reserve resources for a second TCI state, enabling or disabling resource protection based on signal strength, network congestion, and data priority, allowing for adaptive resource management across TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-TRP UE reserves resources for future transmissions using sidelink control information associated with a first TCI state, then resource allocation efficiency is improved, but resource protection consistency deteriorates when the reserved resources are for a second TCI state
Solution Approach 1:
The transmitting UE performs preliminary resource reservation by sending sidelink control information (SCI) associated with a first TCI state to reserve time and frequency resources for future transmissions associated with a second TCI state. This advance reservation allows the receiver UE to proactively protect reserved resources from potential interference, ensuring consistent resource protection across different TCI states while maintaining efficient resource allocation.
2Reliability
If resource protection is enabled for reserved time and frequency resources, then transmission reliability is improved, but network congestion increases
Solution Approach 1:
The receiver UE dynamically determines whether to enable or disable resource protection for reserved time and frequency resources based on current channel conditions, signal strength measurements, and network congestion parameters. This dynamic adaptation allows the system to enable resource protection only when necessary, maintaining transmission reliability while minimizing unnecessary resource consumption and network congestion.
3Measurement precision
If a UE monitors and measures signal strength for multiple TCI states, then resource protection accuracy is improved, but power consumption increases
Solution Approach 1:
The receiver UE applies different measurement and protection strategies to different TCI states based on their specific characteristics and requirements. Instead of uniformly monitoring all TCI states with the same precision, the UE focuses measurements on TCI states that require protection, thereby improving resource protection accuracy for critical transmissions while reducing unnecessary power consumption for less critical ones.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE a sidelink control information transmission associated with a first transmission configuration indicator (TCI) state over a sidelink channel. The first UE may determine that the sidelink control information transmission reserves time and frequency resources for a sidelink data transmission associated with a second TCI state. In some examples, the second TCI state may be different from the first TCI state. The first UE may then selectively enable or disable a resource protection procedure for the reserved time and frequency resources based on the determination and a signal strength associated with the first TCI state or the second TCI state, a network congestion parameter, or a data priority associated with the sidelink data transmission.