DCI Scheduling Multiple PDSCHs via Bundle
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Solution Overview
Problem
In current 5G wireless communication systems, it is challenging for base stations to efficiently provide resource information for multiple physical downlink shared channels (PDSCHs) to terminals through a single Downlink Control Information (DCI) message, leading to increased signaling overhead and complexity.
Innovation Solution
A method where a terminal receives Downlink Control Information (DCI) containing transmission configuration indicators (TCI) states from a base station, assumes data reception through multiple PDSCHs based on the same information, and obtains resource information for these channels, allowing for the scheduling and transmission of multiple PDSCHs through a single DCI, with options for different precoding resource block group configurations and frequency positioning of phase tracking reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple PDSCHs are scheduled through separate DCI messages, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent combines multiple PDSCH scheduling operations into a single DCI message by introducing a PDSCH bundle concept. Multiple PDSCHs are grouped together and scheduled jointly through one DCI, which contains a bundle of resource allocation information. This merging approach reduces the number of DCI messages required while maintaining accurate resource allocation through the bundled information structure.
Solution Approach 2:
The DCI message is enhanced to serve multiple functions simultaneously: it schedules multiple PDSCHs, carries resource allocation information for the bundle, and provides transmission configuration indicators for multiple channels. This multi-functionality allows a single DCI to replace what would traditionally require multiple separate control messages.
2Adaptability or versatility
If multiple DCI messages are used to schedule multiple PDSCHs, then scheduling flexibility is improved, but system complexity increases
Solution Approach 1:
The patent segments the PDSCH bundle into multiple individual PDSCH components, each with its own resource allocation and transmission characteristics. The single DCI contains structured information that can be parsed to provide individual scheduling flexibility for each PDSCH within the bundle, maintaining adaptability while reducing the number of control messages.
Solution Approach 2:
The patent introduces new parameters in the DCI structure to accommodate bundled PDSCH scheduling, including bundle size indicators, resource allocation offsets, and transmission configuration parameters. These parameter changes enable the system to maintain scheduling flexibility through a unified control mechanism rather than requiring multiple independent DCI messages.
Data Source
AI summary
Disclosed are: a method for operating a terminal and a base station in a wireless communication system; and a device supporting same. According to an embodiment applicable to the present disclosure, a terminal may: acquire resource information for setting a transmission mode, in which data generated from the same information is transmitted through a plurality of physical downlink shared channels (PDSCHs) by a base station, and on this basis, transmitting the data through the plurality of PDSCHs; and acquire related data information.