Common Beam Indication Across Wireless Channels and Reference Signals
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Solution Overview
Problem
Existing beam indication mechanisms in wireless communications require high signaling overheads due to different indications for various channels and reference signals, leading to inefficiencies.
Innovation Solution
A method and apparatus for indicating common beam information using DCI or MAC CE to cover multiple channels and reference signals, reducing signaling overheads and ensuring robustness through feedback mechanisms and effective time schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If different beam indications are provided for various channels and reference signals, then beam configuration accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent combines beam indication information for multiple channels and reference signals into a single common beam indication. Instead of providing separate beam indications for each channel and reference signal, the system uses one unified indication that applies to all of them, thereby reducing signaling overhead while maintaining configuration accuracy.
Solution Approach 2:
The common beam indication serves multiple functions simultaneously by being applicable to multiple channels and reference signals. This universal indication mechanism allows a single signaling message to configure beam parameters for PDSCH, PUCCH, PUSCH, and other channels, as well as for CSI-RS and SRS, eliminating the need for separate indications for each function.
2Quantity of substance
If common beam information is indicated for multiple channels and reference signals, then signaling overhead is reduced, but beam configuration flexibility may be compromised
Solution Approach 1:
The patent segments the beam configuration process into two stages: first, common beam information is indicated once for multiple channels and reference signals; second, channel-specific or reference signal-specific beam information can be provided if needed. This segmentation allows the system to maintain flexibility by providing detailed configurations only when necessary, while using the common indication for general cases.
Solution Approach 2:
The beam configuration system is made dynamic by allowing the network to adaptively provide either common beam indication alone, or common indication combined with specific beam indications for particular channels or reference signals. This dynamic approach enables the system to balance between signaling efficiency and configuration flexibility based on actual deployment requirements.
3Manufacturing precision
If separate beam indications are provided for each channel and reference signal, then configuration precision is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple separate beam indication mechanisms into a single common beam indication system. This consolidation reduces the complexity of the signaling architecture by eliminating the need to manage and process multiple independent beam indication messages for different channels and reference signals, while still achieving precise configuration through the unified indication.
Data Source
AI summary
A beam indication method includes: receiving first DCI or a first MAC CE. The first DCI or the first MAC CE is used to indicate at least one piece of common beam information.