Dynamic PDCCH Skipping Indication for UE Power Savings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in implementing dynamic physical downlink control channel (PDCCH) skipping efficiently, especially in the presence of aperiodic or irregular traffic, as existing methods either require significant signaling overhead or are not well-suited for such scenarios.
Innovation Solution
A method for dynamic PDCCH skipping is introduced, where a user equipment (UE) receives a PDCCH indication to skip monitoring during specific periods, using a minimal signaling overhead of 1 bit or 2 bits, allowing for UE power savings even in irregular traffic conditions by determining the skipping periods based on scheduling delays and parameters like k0, k1, and k2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional PDCCH monitoring is continuously performed, then communication reliability is maintained, but UE power consumption increases
Solution Approach 1:
The patent implements periodic PDCCH monitoring with configurable skipping patterns. The UE monitors PDCCH in specified slots and skips monitoring in other slots based on configuration parameters (monitoringSlotOffset, monitoringSymbolsWithinSlot, etc.), transforming continuous monitoring into periodic action to reduce power consumption while maintaining communication reliability through selective monitoring.
Solution Approach 2:
The patent introduces dynamic PDCCH skipping where the monitoring pattern can be adjusted based on traffic conditions and UE state. The configuration allows flexible adjustment of monitoring parameters (periodicity, offset, symbols) to adapt between active and sleeping states, enabling the system to dynamically balance power savings and reliability based on actual communication needs.
2Use of energy by moving object
If PDCCH skipping is implemented to save power, then UE power consumption decreases, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential monitoring configuration parameters needed for PDCCH skipping from the full PDCCH configuration. By specifying only the critical parameters (monitoringSlotOffset, monitoringSymbolsWithinSlot, duration) in the skipping configuration, the patent reduces signaling overhead compared to providing complete PDCCH monitoring configurations for all scenarios.
Solution Approach 2:
The PDCCH skipping configuration structure is designed to be universal, supporting both continuous monitoring (when skipping is not needed) and periodic skipping (when power savings are required). The same configuration framework handles different monitoring patterns, offsets, and durations, eliminating the need for separate dedicated signaling for each monitoring scenario.
3Device complexity
If static PDCCH skipping configuration is used, then device complexity is reduced, but adaptability to irregular traffic decreases
Solution Approach 1:
The patent implements dynamic PDCCH skipping configuration where monitoring parameters can be adjusted based on traffic conditions and UE state. The configuration supports different monitoring patterns, offsets, and durations that can be activated based on actual communication needs, enabling the system to adapt to irregular traffic patterns while maintaining manageable complexity through a structured configuration framework.
Solution Approach 2:
The patent enables adaptability to irregular traffic by allowing changes in key monitoring parameters (monitoringSlotOffset, monitoringSymbolsWithinSlot, duration) based on traffic conditions. These parameter changes allow the UE to adjust its monitoring behavior dynamically - using more frequent monitoring during active traffic and skipping during idle periods - without requiring complete reconfiguration.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may receive a PDCCH including an indication to skip PDCCH monitoring during at least one of: a period of time between the PDCCH and a first physical channel scheduled by the PDCCH, a period of time between the first physical channel scheduled by the PDCCH and a second physical channel scheduled by the PDCCH, or a period of time between the PDCCH and a third physical channel scheduled by the PDCCH. The UE may skip PDCCH monitoring based at least in part on the indication. Numerous other aspects are provided.