Standalone SL CSI-RS Multiplexing for FR2 Beam Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink reference signals for beam management, particularly in FR2 where beam-based management is necessary due to significant atmospheric attenuation and path loss.
Innovation Solution
The proposed solution involves standalone SL CSI-RS transmissions, which allow for multiplexing multiple SL CSI-RS transmissions in one sidelink slot, enabling efficient beam management without the need for accompanying PSSCH transmissions. This approach helps avoid collision issues and reduces latency in beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standalone SL CSI-RS transmissions are implemented for beam management, then beam management efficiency is improved and collision risks are reduced, but resource allocation complexity increases
Solution Approach 1:
The patent segments the sidelink resource pool into dedicated CSI-RS resource elements that are separate from data transmission resources. This segmentation allows standalone SL CSI-RS transmissions to be scheduled independently, improving beam management efficiency while containing resource allocation complexity within defined parameters and time intervals.
2Loss of time
If multiple SL CSI-RS transmissions are multiplexed in one sidelink slot, then beam management latency is reduced, but collision risks increase
Solution Approach 1:
The patent implements preliminary resource configuration where the network node pre-configures CSI-RS resource elements and time intervals before actual transmissions occur. This preliminary setup enables multiple SL CSI-RS transmissions to be multiplexed in one sidelink slot with predefined collision avoidance mechanisms, reducing beam management latency while controlling collision risks through pre-established transmission parameters.
3Adaptability or versatility
If SL CSI-RS transmissions are scheduled independently from data transmissions, then beam management independence is improved, but resource management complexity increases
Solution Approach 1:
The patent creates a universal resource allocation framework where the same resource management mechanisms handle both data transmissions and standalone SL CSI-RS transmissions. The network node uses unified scheduling procedures and UE implements consistent resource selection algorithms for both transmission types, achieving beam management independence while avoiding proportional increase in resource management complexity through multi-functional resource handling.
Data Source
AI summary
Methods, systems, and apparatuses are provided for handling sidelink reference signals for beam management in a wireless communication system, with a method of a first device comprising being scheduled or requested to perform one or more standalone Sidelink (SL) Channel State Information Reference Signal (CSI-RS) transmissions, receptions, or measurements in a first sidelink Transmission Time Interval (TTI) in a first sidelink resource pool in a sidelink carrier or cell, being scheduled or requested to perform a first sidelink data and/or feedback transmission or reception in the first sidelink TTI in the sidelink carrier or cell, and determining to perform either the one or more standalone SL CSI-RS transmissions, receptions, or measurements, or the first sidelink data and/or feedback transmission or reception in the first sidelink TTI, at least based on a parameter of a standalone SL CSI-RS.