Multi-Network Radio Resource Monitoring with LP-WUS Wake-Up
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Solution Overview
Problem
Existing IoT devices face challenges in maintaining service continuity and optimizing power consumption in multi-network environments, particularly when experiencing unexpected service disconnection or moving out of network coverage, which can lead to increased latency and power consumption.
Innovation Solution
An apparatus and method for monitoring radio resources in a multi-network environment that utilizes Low-Power Wake-Up Signals (LP-WUS) to wake up a main radio corresponding to available resources based on predefined configuration information, prioritizing signal quality and implementing duty cycles to minimize power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If eDRX cycle is extended for energy reduction, then power consumption is reduced, but service delay time increases
Solution Approach 1:
The patent introduces a wake-up signal mechanism that allows the terminal to be preliminarily notified before the actual data transmission. The wake-up signal is sent in advance during the extended eDRX cycle, enabling the terminal to wake up only when necessary, thus reducing power consumption while maintaining low service delay by avoiding unnecessary wake-ups.
Solution Approach 2:
The patent implements periodic wake-up signals within the extended eDRX cycle, where the terminal monitors for wake-up signals at specific intervals rather than continuously. This periodic monitoring approach reduces power consumption compared to continuous monitoring while ensuring timely service response when data needs to be transmitted.
2Use of energy by moving object
If DRX/eDRX is used to reduce power consumption, then battery efficiency is improved, but service continuity and availability deteriorate in multi-network environments
Solution Approach 1:
The patent extends the wake-up signal mechanism from single-network to multi-network environments, enabling terminals to receive wake-up signals from multiple networks (5G, 4G, 3G, 2G). This multi-functional approach ensures service continuity across different networks while maintaining power savings, as the terminal can wake up in response to wake-up signals from any available network.
Solution Approach 2:
The patent uses wake-up signals as preliminary notifications from multiple networks, allowing the terminal to prepare for data transmission in advance. This preliminary action ensures that the terminal wakes up only when necessary, maintaining service availability across multiple networks while avoiding unnecessary power consumption.
3Reliability
If main radio is kept awake for service continuity, then service availability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic wake-up signals that trigger the main radio to wake up only when necessary, rather than keeping it continuously awake. The terminal monitors for wake-up signals at specific intervals within the eDRX cycle, ensuring service availability when data needs to be transmitted while minimizing power consumption during idle periods.
Solution Approach 2:
The wake-up signal serves as a preliminary notification that triggers the main radio to wake up in advance of actual data transmission. This allows the terminal to maintain service availability by being ready to receive data when needed, while keeping the main radio in low-power state during periods when no data transmission is required.
Data Source
AI summary
Disclosed herein is an apparatus and method for monitoring radio resources in a multi-network environment. The apparatus receives a Low-Power Wake-Up Signal (LP-WUS) based on predefined configuration information within the coverage of multiple radio resources, wakes up a main radio corresponding to an available resource, among the multiple radio resources, based on the configuration information, and performs Physical Downlink Control Channel (PDCCH) monitoring using the woken up main radio.