Multi-TRP Uplink TCI Mapping for Reliable Repeated Transmission
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Solution Overview
Problem
The increasing demand for faster and more reliable mobile communication services in next-generation wireless systems, particularly in scenarios involving multiple transmission reception points (TRPs), poses challenges in optimizing uplink transmission beams to enhance reliability and efficiency.
Innovation Solution
A method and apparatus that allows user equipment (UE) to autonomously determine a mapping pattern between transmission occasions (TOs) and transmission configuration indication (TCI) states for uplink transmission, optimizing beam selection across multiple TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink transmission is repeated to multiple TRPs, then transmission reliability is improved, but beam management complexity increases
Solution Approach 1:
The UE autonomously determines the mapping pattern between transmission occasions and TCI states without requiring explicit configuration from the gNB. The UE selects appropriate beams based on local channel conditions and transmission requirements, making the beam management process self-service oriented and reducing network-side complexity
Solution Approach 2:
The system dynamically adapts the beam selection and mapping pattern based on real-time transmission conditions. The UE can flexibly adjust which TCI states are mapped to which transmission occasions according to channel quality, mobility conditions, and transmission reliability requirements, enabling dynamic optimization rather than static configuration
2Adaptability or versatility
If multiple TCI states are configured for uplink transmission, then transmission versatility is improved, but configuration complexity increases
Solution Approach 1:
The UE autonomously determines the mapping pattern between transmission occasions and TCI states without requiring explicit configuration from the gNB. The UE selects appropriate beams based on local channel conditions and transmission requirements, making the beam management process self-service oriented and reducing network-side complexity
Solution Approach 2:
The gNB provides a universal configuration framework that supports multiple TCI states and transmission occasions, but the actual mapping and selection is performed by the UE based on its local conditions. This universal framework approach allows the system to handle diverse transmission scenarios without requiring scenario-specific configurations
Data Source
AI summary
Disclosed are a method and apparatus for uplink transmission and reception in a wireless communication system. The method according to an embodiment of the present disclosure may comprise the steps of: receiving, from a base station, configuration information related to uplink transmission, wherein the configuration information comprises information used to determine a mapping pattern between a plurality of TOs and a plurality of TCI states regarding the uplink transmission; and repeatedly transmitting, to the base station, the uplink transmission from the plurality of TOs on the basis of the plurality of TCI states.