Single DCI for Multi-Cell Supplementary Uplink Configuration
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Solution Overview
Problem
Legacy 3GPP networks require separate downlink control information messages for each cell to configure supplementary uplink carriers, leading to inefficiencies in multi-cell scheduling, particularly when supporting multiple supplementary uplink carriers across multiple cells.
Innovation Solution
Implementing a single downlink control information message to configure supplementary uplink carriers across multiple cells, allowing for co-scheduling and efficient indication of SUL carrier support through bitfields that adapt based on the number of supported cells and configured carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate downlink control information messages are used for each cell to configure supplementary uplink carriers, then each cell can be configured independently, but the number of control messages increases and scheduling efficiency decreases
Solution Approach 1:
The patent combines multiple separate downlink control information messages into a single unified DCI message that can schedule supplementary uplink carriers across multiple cells simultaneously. This merging approach reduces the total number of control messages while maintaining the ability to independently configure each cell's SUL carrier through unified resource allocation fields within the single DCI structure.
Solution Approach 2:
The patent creates a universal DCI message format that can function across multiple cells with different configurations. The single DCI message incorporates cell-specific resource allocation fields and SUL carrier indication fields that can be dynamically configured for each cell, allowing one message to perform the scheduling function that previously required multiple separate messages.
2Adaptability or versatility
If separate downlink control information messages are used for each cell, then configuration flexibility is maintained, but resource allocation efficiency and network scalability deteriorate
Solution Approach 1:
By merging multiple cell-specific scheduling operations into a single DCI message, the patent achieves both configuration flexibility and improved scheduling efficiency. The unified message structure allows the network to allocate resources across multiple cells in a coordinated manner, reducing processing overhead and improving resource utilization while maintaining the ability to independently configure each cell's parameters.
Solution Approach 2:
The patent implements dynamic field structures within the single DCI message that can adapt to different configuration scenarios. The resource allocation fields and SUL carrier indications are dynamically configured based on the specific needs of each cell and the current scheduling requirements, allowing the system to maintain flexibility while operating with a unified control message framework.
3Quantity of substance
If multiple supplementary uplink carriers are supported across multiple cells, then uplink capacity increases, but the complexity of control signaling increases
Solution Approach 1:
The patent merges the control signaling for multiple SUL carriers across multiple cells into a single DCI message structure. This consolidation reduces control signaling complexity by eliminating redundant message headers and control fields that would exist if separate messages were used for each cell-carrier combination, while still supporting the increased uplink capacity provided by multiple SUL carriers.
Solution Approach 2:
The patent changes the parameter structure of the DCI message to include consolidated resource allocation fields and SUL carrier indication fields that can represent multiple cells and carriers simultaneously. By parameterizing the message to handle multi-cell multi-carrier scenarios through unified field structures, the system supports increased uplink capacity without proportionally increasing control signaling complexity.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods to provide supplemental uplink configuration for single downlink control information based multi-cell scheduling.