Uplink Reference Signal Pairing for Wireless Terminal Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting explosive data traffic, high transmission rates, a large number of connected devices, very low End-to-End latency, and high energy efficiency, particularly in uplink transmission scenarios involving multiple transmission elements and targets.
Innovation Solution
A method and apparatus for performing uplink transmission in a wireless communication system by receiving and transmitting reference signals, where a smaller number of reference signals are used based on type, indication order, or index, enabling simultaneous and repetitive transmission across multiple transmission elements and targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple reference signals are configured for uplink transmission to multiple transmission targets, then the capacity and versatility of uplink transmission is improved, but the device complexity and processing overhead increase
Solution Approach 1:
The patent segments the set of reference signals into multiple groups, where each group is associated with a specific transmission target (e.g., different TRPs or panels). This segmentation allows the terminal to selectively use reference signals from appropriate groups based on the intended transmission target, reducing the complexity of managing all reference signals simultaneously while maintaining the ability to transmit to multiple targets.
Solution Approach 2:
The network configures and indicates multiple reference signal groups to the terminal in advance, before the actual uplink transmission occurs. This preliminary configuration includes providing information about the number of reference signal groups, the reference signals in each group, and their associations with transmission targets. By preparing this information beforehand, the terminal can efficiently select and use the appropriate reference signals during transmission without real-time complex processing.
2Ease of operation
If reference signals are paired based on type, indication order, or index, then the ease of operation is improved, but the measurement precision and reliability of transmission configuration may be compromised
Solution Approach 1:
The patent introduces dynamic selection mechanisms where the terminal can choose reference signals from configured groups based on current transmission conditions and requirements. The pairing based on type, indication order, or index provides a structured framework that maintains accuracy, while the dynamic aspect allows flexible adaptation to different scenarios, balancing operational simplicity with configuration precision.
Solution Approach 2:
The system incorporates feedback mechanisms where the terminal reports channel state information and transmission status to the network, and the network adjusts reference signal configurations accordingly. This feedback loop ensures that the paired reference signals remain appropriately matched to transmission targets, maintaining configuration accuracy while allowing operational flexibility.
Data Source
AI summary
A method and an apparatus for uplink transmission in a wireless communication system are disclosed. A method performed by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving information related to a first number of reference signals (RSs) for uplink transmission from a network; and performing the uplink transmission based on the second number of RSs among the first number of RSs. Here, the second number may be smaller than the first number, and the second number of RSs may be paired based on one or more of a type, an indication order, or an index related to a RS.