Multibit Wake-Up Signal for DRX Cell Monitoring
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Solution Overview
Problem
Existing solutions do not effectively address UE behavior regarding wake-up signals (WUS) in wireless communication networks, particularly in scenarios involving simultaneous configuration of multiple DRX configurations within one cell group, leading to inefficiencies in power consumption and network performance.
Innovation Solution
A multibit indication mechanism is introduced in wake-up signals to differentiate between primary and secondary cells, allowing the UE to start or stop on-duration timers and adjust dormancy behavior accordingly, thereby optimizing cell monitoring and reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors all cells continuously, then network performance is maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic cell monitoring by introducing DRX (Discontinuous Reception) configurations that allow the UE to switch between monitoring and non-monitoring states. The network can dynamically adjust the monitoring behavior of different cells based on traffic conditions, UE mobility, and channel quality, thereby maintaining network performance while reducing power consumption during periods of low activity.
Solution Approach 2:
The patent segments the cell group into multiple cells with individual monitoring configurations. Instead of monitoring all cells continuously, the UE can be configured to monitor only specific cells (e.g., primary cell vs. secondary cells) at different times or with different priorities. This segmentation allows selective monitoring that maintains essential network functions while reducing overall power consumption.
2Use of energy by moving object
If the UE enters dormancy state to save power, then power consumption is reduced, but network response time increases
Solution Approach 1:
The patent implements preliminary actions by configuring the UE with multiple DRX configurations and wake-up signals in advance. Before the UE enters a dormancy state, the network can send wake-up signals to prepare the UE for upcoming data transmissions. This preliminary configuration allows the UE to quickly transition from dormancy to active state when needed, reducing the effective response time while maintaining power savings during dormancy periods.
Solution Approach 2:
The patent employs feedback mechanisms where the network monitors UE behavior, channel conditions, and traffic patterns to dynamically adjust DRX parameters and wake-up signal timing. Based on this feedback, the network can optimize the balance between power consumption and response time by adjusting dormancy duration, monitoring intervals, and wake-up signal schedules to match actual network conditions.
3Use of energy by moving object
If multiple DRX configurations are used for different cells, then power efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a unified DRX management framework that handles multiple DRX configurations through a common set of procedures and signaling mechanisms. The UE maintains a single DRX configuration set that can be applied to different cell groups or individual cells, with the network controlling which configuration is active for which cells. This universal approach allows power-efficient multi-cell monitoring without requiring separate complex management systems for each cell.
Data Source
AI summary
Embodiments herein relate to a method performed by a user equipment, UE (10), for communicating in a wireless communication network.The UE (10) receives a wake-up signal with a multibit indication from a radio network node (12), wherein the multibit indication comprises a first bit indicating to start or not to start, for a first cell, an on-duration timer at one or more of the next occurrence of an on-duration, and a second bit indicating to apply dormancy or non-dormancy behavior on a second cell at the next occurrence of an on-duration for the second cell. The UE (10) further performs an action related to the wake-up signal taking the received multibit indication into account.