Multi-TRP Transmission Mapping for Beam and CSI Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-TRP transmission mechanisms in next-generation wireless communication systems face challenges in efficiently managing communication with multiple Transmission/Reception Points (TRPs), particularly in terms of beamforming, CSI reporting, and resource allocation.
Innovation Solution
The proposed solution involves a UE receiving TRP information that includes identifiers, resource sets, and mapping tables to facilitate communication with multiple TRPs, enabling improved CSI reporting, UL beam management, rate matching, preemption handling, and beam failure recovery mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-TRP transmission is adopted to increase data throughput and coverage, then communication reliability and data rate are improved, but system complexity and difficulty of managing beamforming and resource allocation increase
Solution Approach 1:
The patent segments the multi-TRP system into independently configurable units by introducing TRP-specific identifiers (TRP-IDs) and separate Downlink Reference Signal (DL-RS) resources for each TRP. This allows the UE to independently manage and process signals from multiple TRPs without overwhelming system complexity, as each TRP can be identified and handled through dedicated resources and parameters.
Solution Approach 2:
The patent adds a new dimension of TRP identification by introducing TRP-IDs as a separate parameter dimension. This allows the system to distinguish between multiple TRPs not just through spatial separation but through an additional identification layer, enabling more efficient resource allocation and beam management across multiple transmission points.
2Reliability
If TRP information including mapping tables is transmitted to enable precise TRP identification, then communication reliability is improved, but signaling overhead and information management complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring TRP mapping tables that associate TRP-IDs with specific DL-RS resources and CORESETs before actual transmission occurs. This allows the UE to have ready-made mapping information, reducing the need for dynamic signaling during data transmission and thereby reducing overall signaling overhead while maintaining reliable TRP identification.
3Measurement precision
If separate DL-RS resources are allocated for each TRP to improve beamforming precision, then beam management accuracy is improved, but resource allocation complexity and processing requirements increase
Solution Approach 1:
The patent applies universality by designing a unified TRP information structure that can handle multiple TRPs through a consistent mapping framework. The same TRP mapping table mechanism and identification methods work across all TRPs, allowing the system to manage separate DL-RS resources for each TRP without proportionally increasing complexity, as the management approach remains universal and scalable.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A method performed by a User Equipment (UE) is provided. The method includes receiving Transmission/Reception Point (TRP) information from a Base Station (BS), and communicating with a plurality of TRPs based on the TRP information, where the TRP information identifies a correspondence between the plurality of TRPs and a plurality of Downlink (DL) Reference Signal (RS) resources, and where the TRP information includes at least one of a plurality of TRP Identifiers (IDs), a plurality of Control Resource Set (CORESET) IDs, or a TRP mapping table including a plurality of TRP indices and a plurality of DL RS resource indices.