Unified TDRA Configuration for Multi-Cell Scheduling
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in performing wireless signal transmission and reception, particularly in managing multiple cell scheduling and resource allocation.
Innovation Solution
The method involves configuring multiple Time Domain Resource Allocation (TDRA) entries for individual and multi-cell scheduling, using Downlink Control Information (DCI) through a Physical Downlink Control Channel (PDCCH), and utilizing parameter sets including slot offset, resource mapping type, and starting symbol information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate TDRA configurations are used for each cell, then individual cell scheduling flexibility is improved, but control overhead and system complexity increase
Solution Approach 1:
The patent combines TDRA configurations from multiple cells into a unified set of TDRA entries that can be shared across cells. Instead of maintaining separate TDRA configurations for each cell, the system creates a consolidated TDRA table where entries can be referenced by multiple cells, thereby reducing control overhead while preserving individual cell scheduling capabilities through selective entry assignment.
Solution Approach 2:
The patent implements universal TDRA entries that can serve multiple cells simultaneously. Each TDRA entry in the unified configuration is designed to be applicable across different cells, allowing a single configuration to perform the scheduling function for multiple cells, thus reducing overall system complexity and control signaling requirements.
2Productivity
If multiple TDRA entries are configured for multi-cell scheduling, then resource allocation efficiency is improved, but configuration complexity increases
Solution Approach 1:
The patent segments the multi-cell TDRA configuration into modular entries, where each entry represents a discrete resource allocation pattern that can be independently defined and then combined. This segmentation allows the system to build complex multi-cell schedules from simpler, reusable building blocks, improving resource allocation efficiency while managing configuration complexity through modular design.
Solution Approach 2:
The patent performs preliminary configuration of TDRA entries during system setup or semi-static reconfiguration, so that when actual scheduling decisions are made, the system can simply reference pre-defined entries rather than creating configurations in real-time. This preliminary action prepares the scheduling framework in advance, enabling efficient resource allocation during dynamic operation without the overhead of real-time configuration complexity.
3Quantity of substance
If a single TDRA field is used for multiple cells in DCI, then control message size is reduced, but scheduling precision may be compromised
Solution Approach 1:
The patent uses a single TDRA field in the DCI message that references entries in a shared TDRA configuration table. Instead of including separate TDRA parameters for each cell in the DCI, the system copies the scheduling parameters from the referenced table entries, which are pre-configured with cell-specific details. This approach keeps the DCI message compact while maintaining scheduling precision through the detailed pre-configured entries.
Solution Approach 2:
The patent introduces a TDRA configuration table as an intermediary between the compact DCI message and the detailed scheduling requirements of multiple cells. The single TDRA field in the DCI serves as a key that points to the intermediary table, which then provides the precise scheduling parameters for each cell. This intermediary structure enables the system to transmit minimal information in the DCI while still achieving precise multi-cell scheduling through the intermediary configuration data.
Data Source
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AI summary
A UE according to an embodiment may receive a configuration of a plurality of first TDRA entries for each cell for individual scheduling of each cell, receive, by each entry for multiple cell scheduling, a configuration of a plurality of second TDRA entries including TDRA information for multiple cells, and receive DCI for the multiple cell scheduling through a PDCCH, wherein the DCI for the multiple cell scheduling provides one TDRA field for one or all of at least two cells scheduled together, a value of the one TDRA field is related to one of the plurality of second TDRA entries, and the TDRA information for the multiple cells included in each of the plurality of second TDRA entries may be configured on the basis of the plurality of first TDRA entries configured for the individual scheduling of each cell.