Wake-Up Signal Monitoring via Preconfigured Patterns
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in efficiently managing wake-up signals (WUS) and unicast vehicle-to-everything (V2X) communication, particularly in scenarios where UEs relocate to different coverage areas, leading to significant signaling overhead and delayed reconfiguration, which affects power saving and communication efficiency.
Innovation Solution
The system introduces a method for a terminal and base station to use a power saving radio network temporary identifier (PS-RNTI) and search space/CORESET configurations to identify PDCCH monitoring occasions for WUS, allowing UEs to determine WUS monitoring occasions based on received search space and CORESET configurations, reducing the need for frequent RRC reconfigurations and minimizing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent RRC reconfigurations are performed to update WUS monitoring occasions during UE relocation, then communication reliability is improved, but signaling overhead increases and power consumption rises
Solution Approach 1:
The base station pre-configures multiple WUS monitoring occasion patterns and their corresponding parameter sets before UE relocation occurs. When UE moves to a new coverage area, the terminal can autonomously select from pre-configured patterns without requiring frequent RRC reconfiguration messages, thus reducing signaling overhead while maintaining reliable WUS monitoring
Solution Approach 2:
The system enables dynamic selection of WUS monitoring occasion patterns based on UE's current coverage area and mobility state. The terminal can switch between different pre-configured patterns (e.g., first pattern for normal operation, second pattern for relocation scenarios) without full RRC reconfiguration, adapting to changing conditions while minimizing signaling
2Reliability
If frequent RRC reconfigurations are performed to update WUS monitoring occasions during UE relocation, then communication reliability is improved, but power consumption increases
Solution Approach 1:
Multiple WUS monitoring occasion patterns are pre-configured in the terminal before relocation. During UE movement, the terminal can autonomously switch between pre-configured patterns without waiting for RRC reconfiguration messages, reducing the frequency of wake-ups and RRC message processing, thereby lowering power consumption while maintaining reliable communication
Solution Approach 2:
The system employs periodic WUS monitoring with different patterns suitable for different scenarios. By pre-configuring multiple patterns with different periodicities, the terminal can select appropriate monitoring intervals based on relocation status, reducing unnecessary wake-ups and power consumption while ensuring reliable WUS detection when needed
3Productivity
If WUS monitoring is continuously updated during UE relocation, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The WUS monitoring configuration is segmented into multiple independent patterns, each with specific parameters for different scenarios. The terminal only needs to select and apply the relevant pre-configured pattern based on current conditions, rather than processing complete RRC reconfiguration messages, thus reducing device complexity while maintaining communication efficiency
Solution Approach 2:
The terminal is empowered to autonomously select and switch between pre-configured WUS monitoring patterns based on its own detection of relocation conditions, without requiring continuous network control and reconfiguration commands. This self-service capability reduces the complexity of coordination between network and terminal while maintaining efficient communication
Data Source
AI summary
The disclosure relates to a communication method and system for converging a 5th generation (5G) communication system for supporting higher data rates beyond a 4th generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for monitoring wakeup signal and method and apparatus for securing unicast V2X communication are provided.