Terminal Time Resource Allocation Reference Position
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Solution Overview
Problem
Current 5G radio communication systems face inefficiencies in signal assignment, particularly in achieving low latency and high reliability for diverse use cases like URLLC, due to limitations in time resource allocation and control channel management.
Innovation Solution
A terminal and communication method that improves signal assignment efficiency by using control circuitry to map data based on control information, employing a reference position for time resource allocation that adapts according to specific conditions, such as repetition patterns and data channel types, to optimize time resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed reference position is used for time resource allocation, then the system complexity is reduced, but the frequency usage efficiency and adaptability to diverse use cases deteriorate
Solution Approach 1:
The reference position for time resource allocation is made dynamic rather than fixed. The terminal determines the reference position based on the actual reception timing of the physical downlink control channel, allowing the system to adapt to different use cases (eMBB, URLLC, mMTC) and transmission conditions while maintaining manageable complexity through standardized determination rules.
2Device complexity
If the reference position is based on the first symbol of a slot, then the time resource allocation is simplified, but the latency performance for urgent communications deteriorates
Solution Approach 1:
The terminal performs preliminary determination of the reference position based on PDCCH reception timing before allocating time resources for data transmission. This allows the system to prepare and identify the appropriate reference position in advance, enabling faster resource allocation and reducing latency for urgent communications compared to using a fixed slot-based reference.
3Productivity
If the reference position adapts to different conditions, then the frequency usage efficiency is improved, but the device complexity for determining the reference position increases
Solution Approach 1:
The system changes the parameter of reference position based on different conditions (PDCCH reception timing, use case requirements, transmission characteristics). By dynamically adjusting this key parameter according to actual communication conditions, the system improves frequency usage efficiency while managing complexity through standardized determination rules and algorithms.
Data Source
AI summary
A terminal according to the present invention is provided with; a reception circuit that receives downlink control information; and a control circuit that, in control for arranging data with respect to a time resource on the basis of the control information, controls a reference for a position at which data is arranged in the time resource, on the basis of a condition related to the data and/or the control information.