Spatial Relation Indication for Segmented 5G Beamforming Signaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing spatial relations for beamforming, particularly in 5G communication systems, which affect radio interface efficiency and coverage.
Innovation Solution
The implementation of a spatial relation indication mechanism, where a user equipment (UE) receives configuration information for transmission configuration indicator (TCI) states, activates a specified number of TCI state code points, and processes messages to determine the size and receive the indicated TCI state code points, thereby establishing optimal beamforming configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single message is used to indicate all TCI state code points, then the signaling is simpler, but the message size becomes excessively large when K is large
Solution Approach 1:
The patent divides the single large message into two separate messages: a first message that activates K TCI state code points, and a second message that indicates N selected code points from the activated set. This segmentation reduces the size of each individual message while maintaining the ability to convey all necessary information, directly resolving the contradiction between signaling simplicity and message size.
2Adaptability or versatility
If N is allowed to vary dynamically based on K, then the system becomes more adaptable, but the UE complexity increases due to dynamic size determination
Solution Approach 1:
The patent establishes predetermined relationships between K and N values, where N is selected from a predefined set based on the value of K. This preliminary configuration allows the UE to determine the size of the second message simply by reading the first part that signals N, without requiring complex dynamic calculations. The adaptability is maintained through the predefined options, while the complexity is reduced by eliminating the need for real-time dynamic determination.
Data Source
AI summary
Methods and apparatuses for spatial relation indications. A method of operating a user equipment (UE) includes receiving configuration information for transmission configuration indicator (TCI) states, receiving a first message activating K TCI state code points, from the configured TCI states, and receiving a first part of a second message signaling a quantity (N) of indicated TCI state code points from the K activated TCI state code points. The method further includes determining a size of a second part of the second message based on the first part of the second message and receiving the second part of the second message. The second part of the second message includes the N indicated TCI state code points.