Multi-TRP Uplink Repetition Signaling for Reliable 5G/6G Transmission
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Solution Overview
Problem
Existing mobile communication systems face challenges in efficiently supporting high data rates, ultra-reliability, and low latency requirements, particularly in terahertz bands, necessitating improved techniques for uplink data transmission and reception in network cooperative communication systems.
Innovation Solution
The proposed solution involves an apparatus and method for uplink data repetitive transmission and reception in a network cooperative communication system, utilizing multiple TRPs (Transmission Reception Points) with enhanced SRI (Sounding Reference Signal) and TPMI (Transmission Precoding Matrix Indicator) fields in a single DCI (Downlink Control Information) to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink data is transmitted through a single serving cell, then the transmission process is simple, but the reliability of data transmission is insufficient
Solution Approach 1:
The patent divides the uplink data transmission into multiple segments by transmitting different repetitions through different cells (serving cell and neighboring cells). Each cell handles a portion of the data transmission, which increases reliability through diversity while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent merges transmission resources across multiple cells by coordinating the serving cell and neighboring cells to simultaneously transmit data repetitions. This combining of multiple transmission paths increases reliability without proportionally increasing complexity, as the coordination follows established inter-cell interference coordination principles.
2Reliability
If data repetitions are transmitted through multiple cells simultaneously, then transmission reliability improves, but inter-cell interference increases
Solution Approach 1:
The patent applies local quality by allowing different cells to transmit data repetitions with cell-specific configurations. Each cell can adjust its transmission parameters (such as resource allocation, power level, or modulation scheme) according to local conditions, thereby maintaining reliability while reducing interference through localized optimization.
Solution Approach 2:
The patent introduces an intermediary coordination mechanism where the network controller manages the simultaneous transmissions across cells. This intermediary coordinates resource allocation and transmission timing to enable multi-cell repetition transmission while mitigating inter-cell interference through centralized control.
3Adaptability or versatility
If the network supports multiple repetition transmission schemes, then adaptability to different scenarios improves, but system complexity increases
Solution Approach 1:
The patent implements universality by designing a multi-cell repetition transmission mechanism that can function across different network scenarios and configurations. The same basic framework supports various adaptation modes (different numbers of repetitions, different cell combinations, different resource allocations) without requiring fundamentally different systems, thereby achieving versatility with controlled complexity.
Data Source
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AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. According to an embodiment of the present disclosure, provided is a method performed in a communication system by a terminal. The method is characterized by comparing the steps of: receiving an RRC message comprising configuration information for a first SRS resource set and a second SRS resource set; receiving, from a base station, a DCI for indicating at least one of a first SRI or a second SRI on a PDCCH; and performing repetition of PUSCH transmission on the basis of at least one of the SRI indicated by the DCI, the first SRS resource set, or the second SRS resource set, wherein the first SRI is associated with the most recent transmission before the PDCCH of the SRS resource identified by the first SRI in the first SRS resource set, and the second SRI is associated with the most recent transmission before the PDCCH of the SRS resource identified by the second SRI in the second SRS resource set.