Multi-Carrier Frequency Allocation with Grouped Cell Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating frequency resources for multicarriers and scheduling across multiple cells, particularly in systems supporting carrier aggregation, where optimizing the size of the frequency domain resource allocation field is crucial for effective communication.
Innovation Solution
The method involves receiving downlink control information (DCI) for multicarrier scheduling from a base station, allocating frequency domain resources based on active bandwidth parts (BWPs) of cells, and optimizing the size of the frequency domain resource allocation (FDRA) field by dividing cells into groups, allowing for efficient resource allocation across multiple cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the frequency domain resource allocation field size is increased to support multiple cells, then the scheduling capability for multiple cells is improved, but the control channel overhead increases
Solution Approach 1:
The patent divides multiple cells into different cell groups and allocates frequency resources separately for each group. This segmentation allows the system to manage multiple cells without requiring a single large allocation field, thereby reducing overall control channel overhead while maintaining multi-cell scheduling capability.
Solution Approach 2:
The patent dynamically determines the frequency domain resource allocation field size based on the number of cells to be scheduled and their bandwidth characteristics. By adapting the field size to actual scheduling needs rather than using a fixed maximum size, the system reduces unnecessary overhead while preserving the ability to schedule multiple cells when required.
2Measurement precision
If the frequency domain resource allocation field is optimized for each individual cell, then the resource allocation precision is improved, but the complexity of determining field size increases
Solution Approach 1:
The patent applies different frequency domain resource allocation field configurations to different cell groups based on their specific bandwidth requirements. Each cell group receives optimized allocation precision tailored to its local characteristics, while the overall system manages complexity through standardized group-level determination procedures.
3Productivity
If carrier aggregation is implemented to increase communication capacity, then the data throughput is improved, but the resource allocation complexity increases
Solution Approach 1:
The patent segments aggregated cells into manageable groups for resource allocation purposes. This segmentation maintains the high communication capacity benefits of carrier aggregation while reducing allocation complexity by handling cells in organized groups rather than as individual entities.
Solution Approach 2:
The patent creates a universal resource allocation mechanism that can handle different numbers and types of cells through standardized cell group configurations. This multi-functional approach supports various carrier aggregation scenarios without requiring separate allocation procedures for each case, thereby reducing overall complexity.
Data Source
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AI summary
The present disclosure relates to allocating a frequency resource for a multicarrier in a wireless communication system, and a method performed by a terminal may include, for a plurality of cells being configured, receiving downlink control information (DCI) for scheduling for a multicarrier from a base station and receiving data by using resources indicated by the DCI.