Terminal Cell-Set Configuration for Multi-Carrier DL and UL Scheduling
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Solution Overview
Problem
The relationship between the set of cells configured for downlink (DL) and the set of cells configured for uplink (UL) in multi-cell PDSCH/PUSCH scheduling in wireless communication systems is not clearly defined, leading to uncertainties in multi-carrier enhancement discussions.
Innovation Solution
A terminal is equipped with a reception unit to receive control information for multi-carrier downlink and uplink scheduling, and a control unit to configure sets of cells for downlink and uplink based on this information, clarifying the relationship between DL and UL cell configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-cell PDSCH/PUSCH scheduling is implemented without clarifying the relationship between DL and UL cell sets, then system capacity and data transmission speed can be improved, but uncertainty and configuration ambiguity arise
Solution Approach 1:
The patent applies parameter changes by introducing specific configuration parameters (first scheduling information and second scheduling information) that define the relationship between DL and UL cell sets. These parameters enable the terminal to determine which cells belong to which set, thereby resolving the configuration ambiguity while maintaining the ability to achieve high system capacity and data transmission speeds through multi-cell scheduling.
2Manufacturing precision
If the relationship between DL and UL cell sets is clarified through separate scheduling information, then configuration precision is improved, but control information complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the scheduling information into two distinct parts: first scheduling information for configuring the UL cell set and second scheduling information for configuring the DL cell set. This segmentation allows each set to be configured independently with precise control, while the modular structure helps manage the overall complexity by organizing the control information into separate, manageable components.
Solution Approach 2:
The patent applies universality by designing the scheduling information structure to serve multiple functions simultaneously. The first and second scheduling information not only configure their respective cell sets but also establish the relationship between them, enabling the system to achieve both precise configuration and coordinated multi-cell scheduling through a unified control mechanism.
Data Source
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AI summary
A terminal includes: a reception unit configured to receive, from a base station, control information including first scheduling information related to multi-carrier downlink data and second scheduling information related to multi-carrier downlink data; and a control unit configured to configure a set of cells used for uplink based on the first scheduling information, and to configure a set of cells used for downlink based on the second scheduling information.