Reference Signal Skipping for Low-Power UE Wake-Up Monitoring
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Solution Overview
Problem
Existing wireless communication systems face challenges in conserving power at user equipment (UE) and network nodes by reducing the need for continuous monitoring of reference signals and wake-up signals, leading to unnecessary power consumption during active and inactive times.
Innovation Solution
Implementing indications to skip sets of reference signals and wake-up signals for specific durations, allowing UEs and network nodes to refrain from receiving or transmitting these signals, thereby conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of reference signals and wake-up signals is implemented, then signal detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic monitoring of reference signals and wake-up signals instead of continuous monitoring. The UE is configured to monitor these signals at specific periodic intervals determined by network configuration, allowing the device to enter low-power states between monitoring occasions while maintaining reliable signal detection when needed.
Solution Approach 2:
The monitoring behavior is made dynamic and configurable through network signaling. The network can dynamically adjust monitoring requirements based on traffic conditions, channel state, and service requirements, allowing the UE to adapt its monitoring activity and power consumption accordingly rather than following a fixed continuous monitoring pattern.
2Measurement precision
If continuous transmission of reference signals is performed, then channel quality measurement accuracy is improved, but network node power consumption increases
Solution Approach 1:
The network node transmits reference signals periodically according to configured patterns rather than continuously. This allows channel quality measurements to be performed at regular intervals sufficient for maintaining connection quality while significantly reducing the energy consumption associated with continuous reference signal transmission.
Solution Approach 2:
The patent applies different reference signal transmission configurations to different time periods and different UE contexts. The network can configure specific monitoring and transmission patterns tailored to individual UE requirements, channel conditions, and service types, optimizing the balance between measurement accuracy and energy consumption locally for each scenario.
3Reliability
If frequent wake-up signal monitoring is implemented, then connection maintenance reliability is improved, but power consumption during inactive time increases
Solution Approach 1:
The UE monitors wake-up signals periodically during inactive time according to configured wake-up signal occasions rather than continuously. This periodic monitoring approach maintains connection reliability by detecting wake-up indications when transmitted while allowing the UE to remain in low-power state between monitoring occasions, significantly reducing power consumption during inactive periods.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication to skip a set of reference signals or a wake-up signal for at least one duration of time. The UE may refrain from receiving or transmitting the set of reference signals, the wake-up signal, or a combination thereof in response to the indication. Numerous other aspects are described.