Wireless Beam Indication With Multiple RS Sets for Model Changes
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Solution Overview
Problem
Existing methods fail to efficiently update beam sets in wireless communication systems due to changes in UE position, movement, or rotation, leading to inaccuracies and reliability issues in beam indication.
Innovation Solution
Implement a method for beam indication using multiple RS sets, including a first RS set and a second RS set, where the second RS set includes RSs for beam measurement, with a quasi co-location relationship, to efficiently change the indicated beam set in response to changes in the network-side AI/ML model or fallback scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single beam set is used for beam indication, then the system is simple to operate, but the beam indication accuracy deteriorates when the AI/ML model changes or needs retraining
Solution Approach 1:
The patent divides the beam indication system into multiple independent RS sets (first RS set and second RS set), each serving different functions. The first RS set is used for normal beam indication while the second RS set is used for beam measurement and model changes. This segmentation allows the system to maintain high reliability by switching between sets without increasing overall complexity, as each set is managed independently with clear defined purposes.
2Adaptability or versatility
If the beam set is updated frequently to adapt to UE position changes, then the beam indication accuracy is maintained, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent implements dynamic beam set selection where the system can switch between the first RS set and second RS set based on operational conditions. When the AI/ML model needs changes or retraining, the system dynamically transitions to using the second RS set for beam measurement, and then switches back to the first RS set for normal indication. This dynamic approach maintains adaptability while managing complexity through structured switching protocols.
Solution Approach 2:
The patent changes the operational parameters of the beam indication system by introducing multiple RS sets with different configurations. The system modifies which RS set is active based on specific conditions (model changes, retraining needs), allowing adaptability without permanently increasing complexity. The parameter change involves switching the active beam set identifier and adjusting the number of bits in the beam indication accordingly.
3Productivity
If multiple RS sets are configured for different beam indication scenarios, then the system can adapt to model changes efficiently, but the configuration complexity increases
Solution Approach 1:
The patent creates a universal beam indication framework where multiple RS sets serve different functions within a unified system. The first RS set handles normal beam indication while the second RS set handles beam measurement and model adaptation scenarios. This multi-functional design allows efficient beam set updates for different scenarios without requiring separate independent systems, thereby improving productivity while controlling configuration complexity through a standardized multi-set architecture.
Data Source
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AI summary
A method performed by a terminal in a wireless communication system according to an embodiment disclosed in the present disclosure comprises the steps of: receiving configuration information; receiving a beam indication; and receiving physical signals/channels on the basis of the beam indication. The configuration information includes information about a plurality of reference signals (RSs) for the beam indication. A plurality of RS sets are configured on the basis of the plurality of RSs. The beam indication is performed on the basis of one of the plurality of RS sets.