Two-Segment DCI Scheduling for Multi-Cell Uplink and Downlink
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in scheduling multi-cell uplink and downlink transmissions due to the bit number limit for decoding Downlink Control Information (DCI) and the need for multiple DCIs, which wastes network resources and complicates resource allocation.
Innovation Solution
Implementing a two-segment DCI structure that includes a first DCI with a common bit field and a first part of designated bit fields, and a second DCI with a second part of designated bit fields, allowing for efficient scheduling of multiple cells within the bit-limit regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DCIs are configured for multi-cell scheduling, then each cell can be scheduled independently, but network resources are wasted and transmission efficiency decreases
Solution Approach 1:
The patent combines multiple separate DCIs into a single unified DCI message that schedules multiple cells simultaneously. This merging approach maintains the ability to independently schedule each cell while eliminating the overhead of transmitting multiple separate DCIs, thus improving transmission efficiency without sacrificing multi-cell scheduling capability.
Solution Approach 2:
The unified DCI structure is designed to serve multiple cells with a single message, making the DCI multi-functional. The DCI contains cell-specific fields that can address different cells, allowing one DCI to perform the scheduling function for multiple cells simultaneously, thereby reducing resource waste while maintaining scheduling flexibility.
2Productivity
If a single DCI is used for multi-cell scheduling, then network resources are saved and transmission efficiency improves, but the bit number exceeds the decoding limit
Solution Approach 1:
The patent segments the DCI structure into common fields and cell-specific fields. The common fields contain scheduling information applicable to multiple cells, while the cell-specific fields contain cell-dependent parameters. This segmentation allows the DCI to efficiently schedule multiple cells while keeping the total bit number within decoding limits by sharing common information across cells.
Solution Approach 2:
The patent dynamically adjusts the DCI format and field content based on the number of cells to be scheduled and their specific requirements. By changing parameters such as the presence/absence of certain fields, field sizes, and cell-specific configurations, the DCI can accommodate multi-cell scheduling needs while maintaining compliance with bit-number limits for polar decoding.
3Manufacturing precision
If multiple DCIs are transmitted for multi-cell scheduling, then each cell's resource allocation is precise, but resource allocation complexity increases and network resources are wasted
Solution Approach 1:
The patent merges the resource allocation information for multiple cells into a single DCI message. This unified approach maintains precise resource allocation for each cell through cell-specific fields while reducing the overall complexity of resource allocation management by eliminating the need to handle multiple separate DCIs and their associated processing.
Data Source
AI summary
Various solutions for improvement of a scheduling of multi-cell PUSCH/PDSCH transmission with a two-segment DCI are described. An apparatus may receive a two-segment DCI indicating a scheduling of a plurality of cells from a network node of a wireless network. The two-segment DCI includes a first DCI and a second DCI. The first DCI includes a common bit field and a first part of a designated bit fields corresponding to at least one of the plurality of cells. The second DCI includes a second part of the designated bit fields corresponding to at least one of the plurality of cells. The apparatus may perform a PDSCH reception or a PUSCH transmission with at least one of the plurality of cells based on the two-segment DCI.