Beam Reporting Confirmation in Mobile Communications
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Solution Overview
Problem
In conventional beam management procedures, there is ambiguity between user equipment (UE) and network nodes regarding successful transmission of beam reports, leading to uncertainty about confirmation of beam reports by the network node.
Innovation Solution
Implementing a method where UE transmits a beam report with an indicator, receives downlink control information (DCI) within an effective duration, and determines confirmation based on an indicator change, allowing for beam switching or synchronization only if confirmed by the network node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network node does not transmit an acknowledgment for the beam report, then the communication protocol is simpler and faster, but the UE cannot know whether the beam report was received or confirmed, leading to ambiguity
Solution Approach 1:
The patent implements a feedback mechanism where the network node transmits downlink control information (DCI) containing an indicator that provides feedback to the UE about whether the beam report was successfully received. This feedback loop resolves the ambiguity by allowing the UE to determine confirmation status without adding complex acknowledgment protocols, thus maintaining productivity while preventing information loss.
2Speed
If the UE performs beam switching without confirmation, then the response time is faster, but the reliability of beam management is reduced due to potential failures
Solution Approach 1:
The patent enables the UE to perform beam switching or beam synchronization actions based on the indicator received in the DCI within the effective duration. The UE can preliminarily prepare for beam switching while waiting for confirmation, and execute the switching action as soon as confirmation is received, thus maintaining fast response time while ensuring reliability through confirmation-based execution.
Data Source
AI summary
Various solutions for response of beam reporting with respect to user equipment and network node in mobile communications are described. An apparatus may transmit a report indicating at least one beam to a network node. The apparatus may receive a downlink control information (DCI) indicating an indicator from the network node within an effective duration corresponding to the report. The apparatus may determine whether the report is received or confirmed by the network node according to the indicator. The apparatus may perform a beam switching or a beam synchronization based on the at least one beam indicated in the report if the report is received or confirmed by the network node.