Multi-Wakeup Signal Timing for UE Jitter and DRX Power Control
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Solution Overview
Problem
User Equipment (UE) in wireless communications systems experiences increased power consumption due to continuous monitoring for jitter in data transmissions, especially when mixed traffic with varying jitter levels is received, leading to inefficient power usage and potential delays.
Innovation Solution
Implementing adaptive jitter indication via a wakeup signal configuration that includes a multi-wakeup signal window with first and second occasions, allowing the UE to skip or adjust monitoring based on detected signals, and using a low-power receiver for initial detection followed by a second receiver for data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE continuously monitors for jitter in data transmissions, then the jitter detection accuracy is improved, but the power consumption increases
Solution Approach 1:
The patent implements periodic monitoring of jitter in data transmissions instead of continuous monitoring. The UE monitors jitter at specific intervals or trigger events (such as when data arrives or at predetermined time points), which maintains adequate jitter detection capability while significantly reducing power consumption compared to continuous monitoring.
2Reliability
If the UE monitors for all wakeup signal occasions, then the data reception reliability is improved, but the power consumption increases
Solution Approach 1:
The patent extracts and monitors only specific wakeup signal occasions that are most relevant for jitter-prone data transmissions. Instead of monitoring all wakeup signal occasions, the UE identifies and monitors a subset of occasions based on traffic patterns, data types, or network indications, thereby maintaining data reception reliability for critical transmissions while reducing overall power consumption.
3Measurement precision
If the UE uses a high-power receiver for wakeup signal detection, then the detection accuracy is improved, but the power consumption increases
Solution Approach 1:
The patent employs periodic or event-triggered use of the high-power receiver for wakeup signal detection rather than continuous operation. The high-power receiver is activated only when jitter-prone data transmissions are expected or when specific conditions are met, while lower-power operation is used during periods when such transmissions are not anticipated, thus balancing detection accuracy with power consumption.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Based on a multi-wakeup signal configuration configured by a network node, a user equipment (UE) may monitor for a first wakeup signal in a first wakeup signal occasion indicating whether to monitor an upcoming on duration of a discontinuous reception (DRX) cycle. Depending on whether the UE detects the first wakeup signal, the UE may monitor for a second wakeup signal in a second wakeup signal occasion indicating a start time of the on duration, or skip monitoring of the on duration. The UE may use different receivers to receive wakeup signals and downlink channels from the network node. The UE may receive a wakeup signal by a first receiver and activate a second receiver to receive a downlink channel, where the UE may store signal samples of the downlink channel in a buffer until the second receiver is fully activated.