Rate Matching Configuration for Multi-Transmitter Wireless Systems
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Solution Overview
Problem
Current wireless communication technologies face ambiguity and inefficiency in rate matching for multi-transmitter communications, leading to suboptimal performance and interference between transmitters in multi-TRP configurations.
Innovation Solution
The method involves configuring rate matching resources and TCI states per transmitter group, allowing for clear identification and efficient use of resources, reducing ambiguity and improving rate matching efficiency by associating TCI states with corresponding groups and resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rate matching is performed in multi-transmitter communication without group-based configuration, then resource utilization is simplified, but ambiguity and interference between transmitters increase
Solution Approach 1:
The patent segments rate matching resources into multiple groups, where each group is associated with specific transmitters and TCI states. This segmentation resolves the ambiguity in multi-transmitter communication by clearly defining which resources correspond to which transmitter group, thereby improving reliability without significantly increasing overall system complexity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring rate matching resources and TCI states into groups before actual transmission occurs. This pre-organization of resources eliminates ambiguity during the transmission phase, as the UE already has clear mappings between transmitter groups and their associated rate matching resources.
2Productivity
If rate matching resources are shared across all transmitters, then resource efficiency is improved, but interference between transmitters increases
Solution Approach 1:
The patent applies local quality by assigning specific rate matching resource groups to specific transmitter groups based on their TCI states. Instead of uniform resource allocation, each transmitter group receives tailored resource allocation that matches its characteristics, thereby maintaining resource efficiency while minimizing interference between different transmitter groups.
3Measurement precision
If TCI states are not associated with specific transmitter groups, then system operation is simplified, but rate matching precision deteriorates
Solution Approach 1:
The patent introduces TCI states as intermediaries that bridge the relationship between transmitter groups and rate matching resources. This intermediary mechanism provides precise mapping without requiring complex direct configuration, as the TCI states serve as reference signals that naturally associate transmitters with their appropriate resource groups.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive configuration information identifying respective rate matching resources of at least two groups and respective transmission configuration indication (TCI) states for the at least two groups. The user equipment may rate match a shared channel transmitted by one or more transmitters based at least in part on the respective rate matching resources and the respective TCI states. Numerous other aspects are provided.