Multi-Cell DCI Scheduling Using Cell Set Indicators
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Solution Overview
Problem
Current communication systems suffer from poor scheduling efficiency and high overhead in downlink control resources due to the scheduling of only one cell at a time, which affects performance.
Innovation Solution
A communication device and network system capable of handling multi-cell scheduling by receiving and transmitting DCI to determine a plurality of cells for communication operations, improving scheduling efficiency and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one DCI schedules only one cell, then the scheduling is simple to implement, but the scheduling efficiency is poor and the overhead for DL control resources is higher
Solution Approach 1:
The patent merges multiple cell scheduling functions into a single DCI message. The DCI now contains a cell set indicator field that can identify multiple cells, allowing one DCI to schedule multiple cells simultaneously. This combining approach improves scheduling efficiency by reducing the number of DCI messages needed while managing complexity through standardized field structures.
Solution Approach 2:
The DCI message is enhanced to serve multiple functions: it can schedule a single cell or multiple cells depending on the cell set indicator field value. The same DCI structure and transmission mechanism are used for both single-cell and multi-cell scheduling, making the system more versatile without requiring separate scheduling protocols.
2Quantity of substance
If one DCI schedules only one cell, then the control structure is simple, but the overhead for DL control resources increases
Solution Approach 1:
Multiple scheduling decisions that would otherwise require separate DCI messages are merged into a single DCI. By including a cell set indicator field that can represent multiple cells, the system reduces the total number of DCI transmissions needed, thereby reducing DL control resource overhead while maintaining manageable control structure complexity through field-based identification.
3Productivity
If multiple cells are scheduled by one DCI, then the scheduling efficiency improves and overhead is reduced, but the complexity of determining scheduled cells increases
Solution Approach 1:
The system performs preliminary configuration of cell sets before actual scheduling occurs. Cell sets are pre-defined and associated with specific DCI formats or search spaces, so when a DCI is received, the UE can quickly determine which cells are scheduled by referencing the pre-configured cell set information, reducing the real-time complexity of determining scheduled cells.
Solution Approach 2:
The patent creates equipotentiality by establishing consistent rules and structures for cell set identification across different DCI formats and scenarios. The cell set indicator field follows standardized encoding rules, and the same principles apply whether scheduling one cell or multiple cells, making the determination process uniform and easier to implement.
Data Source
AI summary
A communication device for handling a multi-cell scheduling includes at least one storage device; and at least one processing circuit, coupled to the at least one storage device, wherein the at least one storage device stores instructions, and the at least one processing circuit is configured to execute the instructions of: receiving a downlink (DL) control information (DCI) from a network; determining a plurality of first cells for at least one communication operation from a cell set according to the DCI; and performing the at least one communication operation with the network via at least one cell of the plurality of first cells.