Unified TCI State Mapping Across CORESET Pool Indexes

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently applying unified transmission configuration indication (TCI) states to signals or channels associated with control resource set (CORESET) pool index values, leading to suboptimal performance in multi-TRP scenarios.

Innovation Solution

Implementing methods and apparatuses that enable the application of unified TCI states to signals or channels by receiving and transmitting medium access channel control elements (MAC-CEs) and downlink control information (DCIs) to manage TCI field codepoints and CORESET pool index values, allowing for the application of first and second unified TCI states to different CORESET pool index values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If unified TCI states are applied to signals or channels associated with CORESET pool index values, then communication efficiency and performance are enhanced, but system complexity increases due to the need to manage TCI field codepoints and map them to multiple CORESET pool indexes

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the TCI state management by introducing separate TCI field codepoints for different CORESET pool index values. Each codepoint is specifically mapped to apply to either the first or second CORESET pool index, allowing the system to handle multiple TCI states independently for different transmission reception points without creating a single complex unified management structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent adds a new dimension to TCI state management by introducing the CORESET pool index as an additional layer of differentiation. Instead of managing TCI states in a single dimension, the system now manages them across multiple dimensions by associating specific TCI field codepoints with specific CORESET pool index values, enabling more granular control.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If separate TCI states are managed for different CORESET pool index values, then interference is reduced in multi-TRP environments, but the difficulty of detecting and measuring TCI configurations increases

Engineering Contradiction:

ImproveinterferenceVSAvoidTCI configuration detection

Core Design Contradiction:

Object-affected harmful factorsVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies local quality by assigning specific TCI field codepoints to specific CORESET pool index values. Each codepoint has a localized function of applying to a particular CORESET pool index, allowing the system to optimize TCI state management for each local context (first TRP or second TRP) independently, thereby reducing interference between different transmission reception points.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces the TCI field codepoint as an intermediary element that mediates between the unified TCI states and the multiple CORESET pool indexes. This intermediary enables the system to manage the mapping relationship between TCI states and CORESET pool indexes in a structured manner, making detection and measurement more manageable despite the increased complexity of multi-TRP configurations.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If MAC-CEs and DCIs are used to indicate TCI field codepoints and CORESET pool index values, then adaptability is improved, but the quantity of signaling overhead increases

Engineering Contradiction:

ImproveadaptabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies universality by using the same MAC-CE and DCI signaling mechanisms to handle multiple functions: indicating TCI field codepoints, associating them with CORESET pool index values, and managing the application of unified TCI states. This multi-functional approach allows the system to maintain adaptability across different scenarios while reusing existing signaling structures rather than creating separate dedicated signaling for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250324429A1Applying unified transmission configuration indication states to signals or channels associated with control resource set pool index values

Publication Date: 2025.10.16 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, one or more medium access channel control elements (MAC-CEs) that indicate a plurality of transmission configuration indication (TCI) field codepoints, wherein each TCI field codepoint corresponds to one or more of: one or more unified TCI states or one or more control resource set (CORESET) pool index values. The UE may receive, from the base station, one or more downlink control informations (DCIs) that indicate one or more TCI field codepoints indicated by the one or more MAC-CEs. Numerous other aspects are described.