Beam Reporting Resource Configuration for Early LTM CSI
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beam reporting to support the increasing demand for wireless data traffic and enable various vertical applications, particularly in 5G/NR systems operating at higher frequencies, where beamforming and massive MIMO techniques are employed.
Innovation Solution
Implementing user equipment (UE) and base station configurations that support early channel state information (CSI) acquisition for layer one triggered mobility (LTM), including message exchanges for LTM candidate cells and CSI resource configurations, to enhance beam reporting and mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If early CSI acquisition for LTM is implemented, then beam reporting efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements early CSI acquisition by performing channel state information measurements and acquisitions before the actual LTM handover event occurs. The UE is configured with CSI resources for candidate cells and performs measurements in advance, allowing the network to have timely CSI available for beam reporting and mobility decisions without waiting until the handover execution moment.
Solution Approach 2:
The patent segments the CSI acquisition process into distinct phases: configuration phase where the UE is provided with CSI resource configurations for candidate cells, measurement phase where early CSI is acquired, and reporting phase where CSI is submitted for LTM decisions. This segmentation allows each phase to be optimized independently and manages the complexity through structured process division.
2Adaptability or versatility
If multiple LTM candidate cells are configured with CSI resources, then mobility support is improved, but loss of time increases
Solution Approach 1:
The patent applies preliminary action by configuring multiple LTM candidate cells with CSI resources in advance and performing measurements before handover is needed. This allows the network to have ready-to-use CSI for multiple potential target cells, enabling faster mobility decisions when handover becomes necessary without time loss during the actual handover event.
Data Source
AI summary
A UE includes a processor, and a transceiver operably coupled to the processor. The transceiver is configured to transmit, to a serving cell, a message indicating that the UE supports CSI acquisition for LTM. The transceiver is also configured to receive, from the serving cell, a configuration message including an LTM configuration for one or more LTM candidate cells, a list of one or more LTM CSI resource configurations for early CSI acquisition of one or more LTM candidate cells, and a list of one or more LTM CSI reporting configurations for early CSI reporting. The transceiver is also configured to receive, from the serving cell, early CSI request information for an LTM candidate cell of the one or more LTM candidate cells, and transmit, to one of the serving cell or the LTM candidate cell, CSI acquired based on the early CSI request information.