Multi-Beam Codebook Signaling for 5G Data Transmission
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Solution Overview
Problem
Current 5G mobile communication systems are limited in their ability to support multi-beam based data transmission due to the constraints of indicating only one codebook in codebook-based transmission and one group of SRS resources in non-codebook based transmission, leading to high signaling overheads.
Innovation Solution
The method extends the indication of multiple codebooks or SRS resource combinations, each corresponding to one beam, allowing for multi-beam based data transmission while reducing signaling overheads by using subsets of codebook sets and SRS resource sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DCI indicates only one codebook in codebook-based transmission, then the system maintains simple signaling structure, but multi-beam based data transmission cannot be supported
Solution Approach 1:
The patent segments the codebook indication by introducing multiple codebook indication fields (first codebook indication field, second codebook indication field, etc.) in the DCI. Each field independently indicates a different codebook, enabling multi-beam transmission while maintaining a structured and manageable signaling format. This segmentation allows the system to indicate multiple codebooks without creating an overly complex single-field structure.
2Adaptability or versatility
If DCI indicates only one group of SRS resources in non-codebook based transmission, then the signaling overhead remains low, but multi-beam based data transmission is not supported
Solution Approach 1:
The patent segments the SRS resource indication by introducing multiple SRS resource indication fields (first SRS resource indication field, second SRS resource indication field, etc.) in the DCI. Each field independently indicates a different group of SRS resources corresponding to different beams. This segmentation enables multi-beam transmission support while keeping the signaling overhead manageable by reusing the existing SRS resource indication mechanism multiple times rather than creating a completely new complex indication structure.
3Adaptability or versatility
If multiple codebooks are indicated in DCI, then multi-beam based data transmission is enabled, but signaling overhead increases
Solution Approach 1:
The patent makes the existing codebook indication fields multi-functional by configuring them to indicate different codebooks for different beams in multi-beam transmission scenarios. The same DCI structure and codebook indication mechanism are reused across multiple fields, allowing the system to support multi-beam transmission without requiring entirely new indication mechanisms. This universal approach enables multi-functionality while controlling signaling overhead by leveraging existing protocol elements.
Data Source
AI summary
Embodiments of this application provide a data transmission method and an apparatus, and relate to the communication field. The method includes: A terminal device receive first information; wherein the first information is used to indicate a first codebook and a second codebook, the first codebook is determined from a first codebook set, the second codebook is determined from a second codebook set, and the second codebook set is a subset of the first codebook set; and perform data transmission based on the first codebook and the second codebook, wherein each of the first codebook and the second codebook corresponds to one beam.