Beam Indication Segmentation for Millimeter Wave Systems
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Solution Overview
Problem
Millimeter wave communication systems face complex beam indications and management due to user movements and channel changes, leading to challenges in maintaining effective beam training and propagation.
Innovation Solution
A method and device for configuring reference-signal-related information into sets that satisfy predetermined channel characteristic requirements, allowing for efficient beam indication and management by notifying communication nodes to perform beam indications based on these sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If explicit global beam indexes are used for beam indication in millimeter wave communication systems, then beam training can be supported, but beam management becomes increasingly complex due to user movements and channel changes
Solution Approach 1:
The patent segments beam indication into two parts: a common beam index conveyed through higher-layer signaling (RRC or MAC CE) that remains relatively stable, and a differential beam index conveyed through downlink control information (DCI) that adapts to channel changes. This segmentation allows the system to maintain beam training capability while reducing management complexity by separating static and dynamic components.
Solution Approach 2:
The patent implements dynamic beam indication where the differential beam index in DCI can be updated frequently to track user movements and channel changes. The system dynamically adjusts beam indications based on current channel conditions while maintaining a stable common beam foundation, enabling adaptability without proportionally increasing management complexity.
2Reliability
If beam indexes are continuously updated and replaced to support beam training, then communication robustness improves, but signaling complexity increases
Solution Approach 1:
The patent performs preliminary action by configuring common beam indexes through higher-layer signaling before actual data transmission. This pre-configuration establishes a stable beam foundation that reduces the need for frequent full beam updates, thereby maintaining communication robustness while reducing signaling complexity during active transmission.
Solution Approach 2:
The patent introduces a differential beam index as an intermediary that bridges the stable common beam index and the actual instantaneous beam requirements. This intermediary allows incremental adjustments to beam directions without requiring complete beam reconfiguration, maintaining robustness while simplifying signaling updates.
3Reliability
If multi-antenna array and beamforming are used to resist signal transmission losses, then link margin improves, but system complexity increases
Solution Approach 1:
The patent segments the beamforming function into common beam components configured through higher-layer signaling and dynamic beam adjustments conveyed through DCI. This segmentation allows the multi-antenna array to maintain high link margin through coordinated beamforming while reducing control complexity by separating stable and dynamic parameters.
Data Source
AI summary
Provided are a signaling sending method and device and a signaling receiving method and device. The signaling sending method includes: configuring N sets according to reference-signal-related information satisfying a predetermined channel characteristic requirement, where N is an integer greater than or equal to 1, and an element in the N sets is the reference-signal-related information; generating a first type of signaling, where the first type of signaling carries the N sets; and sending the first type of signaling to a second communication node, where the first type of signaling is used for notifying the second communication node to perform beam indication according to the N sets.