Indication-Based CSI Planning for Multiple Physical Uplink Transmissions
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Solution Overview
Problem
The lack of an effective mechanism for uniformly and efficiently planning physical uplink channel transmission in 5G mobile communication systems leads to poor reliability due to inaccurate determination of channel state information, particularly in scenarios involving space, frequency, and beam factors.
Innovation Solution
A method and device for determining channel state information of multiple physical uplink channel transmissions based on indication information, utilizing transmission scheme indications, time-frequency domain resource allocations, and spatial transmission filters to improve transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated transmission is supported in uplink grant-free transmission, then transmission reliability is improved, but accurate determination of channel state information becomes difficult due to lack of uniform planning mechanism
Solution Approach 1:
The base station performs preliminary planning and configuration of physical uplink channel transmissions before actual transmission occurs. Indication information is pre-configured to specify transmission parameters including spatial filters, frequency resources, and time resources for M repeated transmissions, enabling the terminal to accurately determine channel state information in advance without requiring real-time negotiation
Solution Approach 2:
Indication information serves as an intermediary mechanism between the base station and terminal. This indication information carries channel state information and transmission parameters, acting as a mediator that enables accurate channel state determination without direct real-time interaction during the repeated transmission process
2Adaptability or versatility
If multiple complex factors (space, frequency, beam) are involved in uplink transmission, then transmission flexibility is improved, but planning complexity increases due to lack of effective mechanism
Solution Approach 1:
The indication information mechanism is designed with multi-functionality to simultaneously handle multiple complex factors. A single indication information structure specifies spatial filters, frequency resources, time resources, and transmission parameters for M repeated transmissions, providing uniform planning across space, frequency, and beam dimensions without requiring separate mechanisms for each factor
Solution Approach 2:
The system utilizes parameter changes in indication information to adapt to different transmission scenarios. By dynamically adjusting parameters such as spatial filter indices, frequency resource allocations, and time resource assignments within the indication information, the system achieves flexible planning across multiple dimensions while maintaining a unified mechanism
Data Source
AI summary
Provided are an information determination method and device, a receiving method and device, a communication node, and a medium. The method includes: receiving indication information; and determining channel state information of M physical uplink channel transmissions according to the indication information, where M is an integer greater than or equal to 1.