Paging Frame Determination for RedCap UEs in RRC Inactive
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently supporting terminals with reduced capability (RedCap UE) for MTC communication, as they require specialized system information and paging mechanisms to optimize resource usage and power efficiency.
Innovation Solution
The method involves configuring RedCap UE to use specific search spaces and control resource sets within the initial bandwidth part to receive system information, monitor paging occasions, and adjust bandwidth and subcarrier spacing dynamically to reduce power consumption and improve scheduling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If RedCap UE monitors paging in RRC_INACTIVE state using standard 5G mechanisms, then network coverage and reliability are maintained, but power consumption increases and resource allocation efficiency decreases
Solution Approach 1:
The patent implements dynamic DRX cycle adjustment where the terminal can switch between first DRX cycle (for normal paging) and second DRX cycle (for extended paging) based on network conditions and terminal state. This dynamic adaptation allows the terminal to extend monitoring intervals when appropriate, reducing power consumption while maintaining reliable connection through selective use of different DRX configurations
Solution Approach 2:
The patent changes the DRX cycle parameter from a fixed value to a multi-level configurable parameter. The terminal receives and applies different DRX cycle values (first DRX cycle and second DRX cycle) based on system information and network configuration, allowing parameter optimization to balance power saving and connection reliability for RedCap UEs
2Productivity
If RedCap UE uses standard bandwidth and subcarrier spacing configurations, then system compatibility is maintained, but resource allocation efficiency and scheduling flexibility decrease
Solution Approach 1:
The patent segments the bandwidth part configuration into multiple options with different bandwidth sizes and subcarrier spacings. The terminal can be configured with specific bandwidth parts suitable for RedCap capabilities, separating RedCap-specific configurations from standard 5G configurations. This segmentation allows efficient resource allocation for RedCap UEs while maintaining compatibility with standard terminals
Solution Approach 2:
The patent creates a universal configuration framework that supports both standard 5G terminals and RedCap terminals. The system information includes configurations that can be applied universally, with specific parameters (bandwidth, subcarrier spacing) that can be adapted for different terminal types. This multi-functionality allows the same system to efficiently serve diverse terminal capabilities
Data Source
AI summary
A method and apparatus for monitoring paging in a mobile communication system are provided. Method for monitoring paging includes receiving a first message including first paging cycle and second paging cycle from the AMF, receiving a second message including third paging cycle and fourth paging cycle from the base station, receiving a system information including an information related to the support of extended DRX, determining a reference DRX cycle, monitoring paging occasion based on the reference DRX cycle and receiving a paging.