UE Wake-Up Signal Paging Record Analysis for Energy Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication technologies face challenges in minimizing the disruption of deep sleep states in user equipment (UE) due to the use of Wake Up Signals (WUS) that wake up all UEs in a group, even if only one UE needs to be paged, leading to unnecessary power consumption and energy inefficiency.
Innovation Solution
A method where user equipment (UE) in a sleep state receives a wake-up signal and monitors paging occasions by receiving and analyzing paging messages. If the message is not addressed to the UE, it determines whether to continue monitoring based on the number of paging records in the message, allowing it to return to a deep sleep state if unnecessary, thereby reducing wake-up time and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE wakes up upon receiving a wake up signal to check paging messages, then the UE can receive paging information, but the UE remains awake longer than necessary causing increased power consumption
Solution Approach 1:
The UE performs preliminary action by monitoring the number of paging records in the paging message before fully processing all paging information. This allows the UE to determine in advance whether it needs to continue monitoring or can safely return to sleep state, thereby reducing unnecessary wake-up time and power consumption while ensuring reliable paging reception when needed.
2Reliability
If the UE monitors all paging occasions after waking up, then the UE ensures no paging message is missed, but the UE cannot return to sleep state promptly causing energy waste
Solution Approach 1:
The UE applies partial action by monitoring only the necessary number of paging occasions based on the paging records received. Instead of monitoring all possible paging occasions, the UE determines the minimum required monitoring based on the actual paging message content, thereby reducing wake-up duration and energy waste while maintaining reliable paging detection.
3Use of energy by moving object
If the LP wake up receiver maintains ultra-low power consumption, then the UE can enter deep sleep state effectively, but the main receiver cannot be turned off completely limiting functionality
Solution Approach 1:
The receiver system is segmented into two distinct parts: the LP wake up receiver that maintains ultra-low power consumption for basic wake-up signal detection, and the main receiver that can be completely turned off when not needed. This segmentation allows the UE to achieve deep sleep state with minimal power consumption while retaining full functionality when the main receiver is activated.
Data Source
AI summary
A UE in a sleep state receives a WUS and monitors paging occasion(s). The monitoring includes: receiving a paging message; determining the received paging message is not addressed to the UE; and determining whether another paging occasion should be monitored based at least on paging records in the paging message. The UE reenters the sleep state in response to a determination it is not necessary to monitor another paging occasion. A network node receives, from a UE, indication of a capability to transition out of a sleep state via a WUS to return to a sleep state based on paging message monitoring. The network node determines, based on the capability and on a need to transmit a paging message to the user equipment, a sleep state of the user equipment, and transmits to the UE either a wake up signal or paging message based on the determined sleep state.