Base Station DCI Pattern Selection for Flexible Data Allocation
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Solution Overview
Problem
In New RAT, the flexible allocation of resources for data areas is hindered by the semi-static notification of resource areas using higher-layer signaling, which limits the ability to dynamically adjust data allocation in consideration of control resource sets.
Innovation Solution
A base station and terminal system that selects one pattern for data allocation from multiple patterns in a resource area, with the base station providing notification of setting information via higher-layer signaling and the selected pattern via downlink control signal (DCI), allowing the terminal to specify the data allocation resource accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource areas are notified using higher-layer signaling, then the notification is reliable and standardized, but the flexibility to dynamically adjust data allocation is reduced
Solution Approach 1:
The notification mechanism is segmented into two parts: higher-layer signaling provides semi-static resource area configuration, while DCI provides dynamic pattern selection. This division allows each layer to handle appropriate aspects of resource allocation, achieving both reliability and flexibility.
Solution Approach 2:
Higher-layer signaling performs preliminary action by pre-configuring multiple resource area patterns before actual data transmission. The terminal receives and stores these patterns in advance, enabling rapid dynamic selection via DCI without complex real-time negotiations.
2Adaptability or versatility
If multiple patterns of resource areas are supported, then the adaptability to different use cases is improved, but the overhead of signaling increases
Solution Approach 1:
The patent extracts the dynamic pattern selection information from the bulk higher-layer signaling and places it in compact DCI format. Only the necessary pattern index (e.g., 2 bits for 4 patterns) is transmitted dynamically, while the detailed pattern configurations are pre-established through higher-layer signaling.
Solution Approach 2:
The system changes the parameter representation by using compact pattern indices in DCI instead of transmitting full resource allocation details dynamically. This parameter transformation reduces signaling overhead while maintaining the ability to select from multiple resource area patterns.
3Productivity
If dynamic pattern selection is implemented, then resource utilization is improved, but the complexity of terminal processing increases
Solution Approach 1:
The terminal performs preliminary action by pre-receiving and storing multiple resource area patterns through higher-layer signaling. This advance preparation eliminates the need for complex real-time pattern generation, reducing processing complexity while enabling efficient dynamic selection based on DCI indicators.
Data Source
AI summary
In a base station, a DCI generation unit selects one pattern (mode) for use when data is allocated from among a plurality of patterns (modes) of a resource area where data (PDSCH) is allocated, and a transmission unit provides notification about setting information regarding the plurality of patterns (modes) by signaling of a higher layer and provides notification about the one pattern (mode) selected from the plurality of patterns by a downlink control signal (DCI).