Unified DCI Signaling for Uplink and Downlink Resource Unavailability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication networks face high device processing requirements due to the need to monitor multiple downlink control information formats for uplink and downlink transmissions, particularly when high subcarrier spacing is used, leading to reduced PDCCH monitoring capacity and increased complexity.
Innovation Solution
A unified signaling mechanism is introduced to combine downlink preemption indication and uplink cancellation indication using a new DCI format, reducing the need for separate monitoring of DCI formats and optimizing PDCCH monitoring for high subcarrier spacing scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple downlink control information formats are used for indicating uplink and downlink transmissions, then the signaling capability is improved, but the device processing complexity increases
Solution Approach 1:
The patent combines separate downlink preemption indication and uplink cancellation indication into a single unified DCI format. This merging reduces the number of DCI formats from multiple to one, thereby reducing device processing complexity while maintaining the ability to indicate both downlink and uplink resource unavailability
Solution Approach 2:
The unified DCI format is designed to serve multiple functions: it can indicate downlink preemption, uplink cancellation, or both simultaneously. This multi-functionality allows a single DCI format to replace multiple specialized formats, reducing the monitoring burden on devices while preserving comprehensive signaling capability
2Reliability
If multiple DCI formats are monitored for high subcarrier spacing, then the transmission reliability is improved, but the PDCCH monitoring capacity is reduced
Solution Approach 1:
By merging downlink preemption indication and uplink cancellation indication into a single unified DCI format, the patent reduces the total number of DCI formats that need to be monitored. This increases PDCCH monitoring capacity while maintaining transmission reliability through the consolidated indication mechanism
3Measurement precision
If separate DCI formats are used for downlink preemption and uplink cancellation, then the indication precision is improved, but the overall system efficiency deteriorates
Solution Approach 1:
The unified DCI format incorporates fields that can independently indicate downlink preemption and uplink cancellation status. This allows the single format to maintain precise indication capability for both types of resource unavailability while improving overall system efficiency by reducing monitoring overhead and processing requirements
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for unified signaling for Downlink Preemption Indication (“DL PI”) and Uplink Cancellation Indication (“UL CI”). One apparatus in a mobile communication network includes a processor and a transceiver that receives first signaling information from a Radio Access Network (“RAN”) device to schedule first communication resources and receives second signaling information after receiving the first signaling information. Here, the processor determines unavailability of at least one set of uplink resources and unavailability of at least one set of downlink resources from the second signaling information on the scheduled first communication resources.