CSI Reporting for Private and Common Message Beam Management
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Solution Overview
Problem
The use of rate-splitting multiple access (RSMA) techniques in wireless communication systems increases complexity, cost, and overhead due to the need for separate beam management of private and common messages, which can degrade performance.
Innovation Solution
User equipment (UE) reports channel state information (CSI) for both private and common messages, allowing the base station to adjust parameters to improve reception and reduce block error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rate-splitting multiple access (RSMA) techniques are used to reduce redundant signaling and improve decoding performance, then signaling efficiency and decoding performance are improved, but system complexity and overhead increase due to separate beam management requirements
Solution Approach 1:
The patent combines private message and common message transmissions into a unified beam management framework. The base station transmits both message types using the same beamforming resources and channel state information, eliminating the need for separate beam management procedures. This merging approach maintains the decoding performance benefits of RSMA while significantly reducing system complexity and overhead.
2Reliability
If separate beam management is implemented for private and common messages, then message-specific optimization is achieved, but overhead and cost increase
Solution Approach 1:
The patent implements a universal beam management approach where a single set of beamforming parameters and channel state information serves both private and common message transmissions. The base station configures beamforming resources that can simultaneously support multiple message types directed to different user equipment, reducing signaling overhead while maintaining message-specific reception quality through appropriate parameter configuration.
3Reliability
If CSI reporting for both private and common messages is implemented, then reception quality and error rate reduction are achieved, but reporting overhead increases
Solution Approach 1:
The patent implements selective CSI reporting where user equipment reports channel state information specifically for private messages that require dedicated beamforming optimization. For common messages that can be robustly transmitted using broader beamforming, detailed CSI reporting is reduced or omitted. This local quality approach maintains high reception quality for messages that need it while reducing overall reporting overhead.
Data Source
AI summary
Some aspects of the disclosure are related to channel state information (CSI) reporting for one or both of a private message (p-message) or a common message (c-message). In some aspects, a user equipment (UE) may receive a signal that includes a p-message associated with the UE and a c-message associated with the UE and at least one other UE. The UE may transmit a measurement report that indicates one or both of first CSI associated with the p-message or second CSI associated with the c-message.