CORESET Configuration for Separate Ack/Nack Transmission Resources
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving data, particularly in managing Ack/Nack signals for downlink data, which leads to delays and resource allocation inefficiencies due to the lack of separate resource allocation for these signals.
Innovation Solution
A method where a base station configures control resource sets (CORESETs) to allow for separate transmission of Ack/Nack signals through different resources within the same slot, using index values to group and schedule Physical Downlink Shared Channels (PDSCH) and Downlink Control Information (DCI), enabling simultaneous transmission of Ack/Nack for multiple PDSCHs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If Ack/Nack signals for multiple PDSCHs are transmitted through the same resource, then resource allocation is simplified, but transmission delay increases and resource utilization efficiency deteriorates
Solution Approach 1:
The patent divides the Ack/Nack transmission resource into multiple separate resources (first resource and second resource) corresponding to different PDSCH receptions. This segmentation allows simultaneous transmission of multiple Ack/Nack signals without collision, reducing transmission delay while maintaining manageable resource allocation through structured grouping via CORESET indices.
2Productivity
If separate resources are allocated for Ack/Nack transmission, then resource utilization efficiency improves, but system complexity increases
Solution Approach 1:
The patent creates a universal mapping mechanism where CORESET indices serve multiple purposes: they identify control resource sets, group PDSCH receptions, and determine Ack/Nack resource selection. This multi-functionality enables separate resource allocation for improved efficiency while avoiding the complexity overhead of dedicated signaling for each function.
3Reliability
If multiple CORESETs are configured with different TCI states, then beam diversity and reliability improve, but configuration complexity increases
Solution Approach 1:
The patent assigns different TCI states to different CORESETs to provide localized beam optimization for specific transmission directions or channels. Each CORESET is configured with appropriate TCI states suited to its specific function, improving reliability through beam diversity while maintaining clear local configuration rules that prevent system-wide complexity escalation.
Data Source
AI summary
The present specification relates to a method, performed by a base station, for transmitting and receiving data in a wireless communication system. More particularly, a terminal receives, from the base station, configuration information for setting a control resource set (CORESET) and receives first downlink control information (DCI) and second DCI, on the basis of the configuration information. Afterward, the terminal receives a first physical downlink shared channel (PDSCH) on a resource scheduled by the first DCI and receives a second PDSCH on a resource scheduled by the second DCI. Afterward, the terminal transmits first Ack/Nack with respect to the first PDSCH and Ack/Nack with respect to the second PDSCH, wherein the first Ack/Nack and the second Ack/Nack are transmitted through different resources in the same slot.