Paging Indicator Reference Signal for UE Power Saving
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power consumption in user equipment (UE) during discontinuous reception (DRX) cycles, as UEs often transition to a normal power state even when no downlink channel is scheduled.
Innovation Solution
The implementation of a reference signal or channel that conveys a paging indicator allows UEs to determine whether to monitor a paging control channel. Based on this indicator, UEs can estimate the time or frequency information for receiving the paging control channel and decide whether to skip monitoring it, thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs continuously monitor the paging control channel during DRX cycles, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The base station transmits a paging indicator in advance (before the actual paging message) to inform the UE whether a downlink channel is scheduled. This preliminary indication allows the UE to prepare accordingly - if no channel is scheduled, the UE can skip monitoring the paging control channel, thereby reducing power consumption while maintaining reliable communication when needed
2Use of energy by moving object
If UEs skip monitoring the paging control channel to save power, then power consumption is reduced, but communication reliability deteriorates
Solution Approach 1:
The paging indicator serves as a feedback mechanism from the base station to the UE, providing information about whether a downlink channel is scheduled. This feedback loop ensures that UEs make informed decisions about monitoring - they skip monitoring only when the indicator confirms no channel is scheduled, thereby maintaining communication reliability while reducing power consumption
3Use of energy by moving object
If UEs transition to normal power state during DRX cycles, then power consumption is reduced, but system efficiency decreases
Solution Approach 1:
The system dynamically adjusts UE power state based on real-time paging indicator information. Instead of a static power consumption pattern, the UE transitions between power states flexibly - remaining in normal power state when a downlink channel is scheduled (as indicated by the paging indicator) and transitioning to sleep state when no channel is scheduled, thereby optimizing both power consumption and system efficiency
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a reference signal or channel conveying a paging indicator. The UE may determine, based on the paging indicator, whether to monitor a paging control channel including a scheduling grant for a paging shared channel communication. The UE may estimate time or frequency information for receiving the paging control channel based at least in part on a result of the determining, and receiving the paging control channel containing based at least in part on the result of the determining and the estimated time or frequency information, or skipping monitoring the paging control channel based at least in part on the result of the determining. Numerous other aspects are provided.