UE Early CSI Triggering for Faster Channel State Acquisition
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently acquiring channel state information (CSI) due to the high demand for data traffic and the need for improved radio interface efficiency, particularly in 5G/NR communication systems operating in higher frequency bands, where propagation loss and transmission distance are significant issues.
Innovation Solution
Implementing UE-initiated early triggering for CSI acquisition by configuring user equipment (UE) and base stations to exchange indicators and resources for CSI reporting, allowing for timely and efficient CSI measurement and reporting through coordinated channel resource configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional CSI acquisition methods are used, then the system can maintain simple procedures, but the CSI acquisition time is delayed and radio interface efficiency is reduced
Solution Approach 1:
The patent applies preliminary action by having the UE configure and prepare CSI measurement resources in advance before actual data transmission begins. The UE configures SRS resources, CSI report configurations, and triggers early CSI acquisition procedures proactively, enabling the network to have channel state information ready before data transmission starts, thus reducing latency and improving radio interface efficiency.
2Productivity
If early CSI acquisition is implemented, then radio interface efficiency is improved, but the system complexity increases due to additional configuration and coordination requirements
Solution Approach 1:
The patent applies self-service by enabling the UE to autonomously configure and manage its own CSI measurement resources. The UE independently sets up SRS resources, configures CSI report settings, and triggers early acquisition procedures without requiring extensive manual network configuration. This autonomous capability reduces the operational burden on network operators while maintaining the complexity benefits of sophisticated CSI management.
3Length of moving object
If UE-initiated early triggering is implemented, then transmission distance is increased by reducing propagation loss, but the requirement for coordinated channel resource configurations increases
Solution Approach 1:
The patent applies feedback by implementing a closed-loop system where the UE transmits CSI reports back to the network, and the network uses this information to adjust subsequent transmission parameters. The UE monitors channel conditions, measures CSI, and provides feedback reports that enable the network to optimize transmission parameters for maximum distance and minimum propagation loss, creating an adaptive system that continuously improves performance.
Data Source
AI summary
Methods and apparatuses for user equipment (UE)-initiated early triggering of channel state information (CSI) acquisition. A method performed by a UE includes receiving, in a system information block (SIB), a first uplink (UL) channel resource configuration and a channel state information (CSI) report configuration for early CSI acquisition and determining, from the first UL channel resource configuration, a first UL channel resource associated with the CSI report configuration. The method further includes transmitting, in a first UL channel based on the first UL channel resource, a first indicator and receiving, in a first downlink (DL) channel, a second indicator indicating the CSI report configuration. The method further includes determining a second UL channel resource based on the CSI report configuration and transmitting, in a second UL channel based on the second UL channel resource, a CSI report.