Sidelink Discontinuous Reception Wake-Up Signal Configuration
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing communication protocols across diverse wireless devices and base stations supporting multiple technologies, leading to suboptimal performance and resource utilization.
Innovation Solution
The implementation of advanced New Radio (NR) user plane and control plane protocol stacks, along with flexible bandwidth management and carrier aggregation techniques, enables dynamic configuration and optimization of communication protocols to adapt to varying traffic conditions and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception (DRX) is configured for sidelink communication, then power consumption is reduced, but measurement accuracy and detection reliability deteriorate
Solution Approach 1:
The patent applies dynamics by making the DRX configuration adaptive rather than static. The network dynamically adjusts DRX parameters (cycle length, on-duration, offset) based on measured channel conditions and traffic patterns. When channel quality is good, longer DRX cycles are used to save more power; when quality degrades, the system switches to shorter cycles or continuous monitoring to maintain measurement accuracy.
Solution Approach 2:
The patent changes physical and operational parameters of the DRX mechanism based on channel conditions. Specifically, it modifies DRX cycle duration, on-duration timer values, and monitoring occasion frequencies according to measured signal quality metrics (RSRP, SINR). This parameter adaptation allows the system to optimize the trade-off between power consumption and measurement accuracy under varying channel conditions.
2Use of energy by moving object
If DRX cycle is extended to save power, then power consumption decreases, but latency in detecting sidelink opportunities increases
Solution Approach 1:
The system dynamically adjusts DRX cycle length based on traffic activity and channel conditions. During periods of high traffic activity or when data is available for transmission, the system shortens the DRX cycle or activates continuous monitoring to reduce detection latency. During idle periods with no traffic, longer DRX cycles are applied to maximize power savings.
Solution Approach 2:
The patent implements periodic monitoring occasions within the DRX cycle where the UE wakes up to check for sidelink opportunities. By strategically positioning these periodic wake-up occasions and adjusting their frequency based on traffic patterns, the system ensures that detection latency remains acceptable while maintaining power savings during idle periods.
3Measurement precision
If measurement requirements are increased to improve accuracy, then measurement precision improves, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies local quality by performing detailed measurements only when necessary rather than continuously. The system uses basic channel quality indicators for routine operations and only activates more complex measurement procedures (such as beam-specific RSRP measurements or interference measurements) when traffic conditions or channel quality warrant higher precision. This selective measurement approach maintains accuracy when needed while reducing overall device complexity.
Data Source
AI summary
A first wireless device may receive, from a second wireless device, one or more messages indicating (i) a configuration of a measurement signal of a third wireless device and (ii) a wake-up condition for the measurement signal. The first wireless device may measure a signal power of the measurement signal. The first wireless device may determine that the signal power satisfies the wake-up condition. Based on the determining, the first wireless device may monitoring one or more sidelink signals from a fourth wireless device.