User Terminal DCI Segmentation for Multi-TB Scheduling
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Solution Overview
Problem
In next-generation radio communication systems, specifically in NR, the existing methods struggle to appropriately control the transmission or reception of multiple pieces of data scheduled over different time units using a single piece of downlink control information, leading to inefficiencies in resource allocation and retransmission processes.
Innovation Solution
A user terminal is designed with a receiving section to interpret downlink control information containing fields for each transport block, allowing it to control the transmission or reception of multiple transport blocks using shared channels scheduled across various time units, and includes mechanisms for flexible resource allocation and retransmission control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single piece of DCI schedules multiple PUSCHs corresponding to multiple pieces of data over different time units, then resource allocation efficiency is improved, but the ability to appropriately control transmission or reception of multiple pieces of data deteriorates
Solution Approach 1:
The DCI structure is segmented to include separate fields for each transport block (TB), allowing independent control parameters (such as HARQ process numbers, redundancy versions, and modulation and coding schemes) to be specified for each scheduled data piece. This segmentation enables precise control over multiple PUSCH transmissions while maintaining efficient resource allocation through a single DCI message.
2Adaptability or versatility
If existing LTE methods are used for multi-data scheduling, then system compatibility is maintained, but appropriate control of multiple data transmissions over different time units cannot be achieved
Solution Approach 1:
The DCI message structure is designed with universal fields that can accommodate multiple transport blocks, where each TB field contains complete control information necessary for scheduling. This multi-functional DCI structure maintains compatibility with existing LTE decoding procedures while enabling enhanced control capabilities for scheduling multiple data pieces across different time units, effectively bridging legacy system requirements with advanced scheduling needs.
Data Source
AI summary
A user terminal according to an aspect of the present disclosure comprises: a reception unit which receives downlink control information including a field for each transport block (TB) or a field for a specific transport block (TB); and a control unit which controls the transmission or reception of a plurality of different transport blocks (TB) using a plurality of shared channels that are scheduled according to the downlink control information over a plurality of time units. Accordingly, it is possible to appropriately control the transmission or reception of a plurality of pieces of data that are multi-data scheduled.