Channel measurements and concurrent messages for user equipment with multiple transmit-receive points
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately measuring signal quality and coordinating transmissions for user equipment with multiple transmit-receive points, particularly in scenarios involving multiple TRPs, which can lead to inefficiencies in resource utilization and reliability.
Innovation Solution
A method for user equipment with multiple TRPs to measure separate indicators of signal strength for each TRP, transmit configuration messages to peer UEs to avoid combining measurements, and coordinate simultaneous or combined transmissions based on these measurements to improve reliability and resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment with multiple TRPs combines measurements from multiple TRPs, then measurement accuracy is improved, but it leads to incorrect channel quality assessment and reduced reliability in multi-TRP scenarios
Solution Approach 1:
The patent segments the measurement process by TRP, requiring separate measurement and reporting for each TRP's reference signals. The network configures separate measurement gaps and reporting rules for each TRP, preventing improper combination while maintaining accurate individual measurements. This segmentation resolves the contradiction by preserving measurement precision for each TRP while ensuring reliable channel quality assessment through separate evaluation.
2Measurement precision
If the network configures separate measurement gaps for each TRP, then measurement accuracy is improved, but measurement overhead and complexity increase
Solution Approach 1:
The patent implements segmentation by configuring separate measurement gaps and reporting configurations for each TRP. The network provides distinct measurement gap patterns, reference signal resource configurations, and reporting rules for each TRP, enabling accurate separate measurements while managing complexity through structured configuration management.
Solution Approach 2:
The patent enables dynamic adaptation by allowing the network to flexibly configure measurement parameters, gaps, and reporting rules based on multi-TRP deployment scenarios. The system can adjust measurement configurations dynamically to balance measurement accuracy requirements against overhead and complexity constraints for different network conditions.
3Productivity
If user equipment transmits concurrent messages on overlapping resources using multiple TRPs, then resource utilization efficiency is improved, but interference management becomes more difficult
Solution Approach 1:
The patent implements dynamic resource allocation and coordination for concurrent transmissions from multiple TRPs. The network dynamically manages uplink grant allocations, power control parameters, and resource assignments for each TRP based on channel conditions and interference levels. This dynamic approach enables efficient resource utilization through concurrent transmissions while maintaining interference management through adaptive parameter adjustment and coordinated scheduling.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE on a sidelink channel, a configuration message that includes an indication of a first set of reference signals associated with a first transmit-receive point (TRP) of the first UE, an indication of a second set of reference signals associated with a second TRP of the first UE, and an indication to refrain from combining measurements based at least in part on the first set of reference signals with measurements based at least in part on the second set of reference signals. The first UE may further transmit, using the first TRP of the first UE, the first set of reference signals, and transmit, using the second TRP of the first UE, the second set of reference signals. Numerous other aspects are provided.