Unified Paging Window for Dual eDRX Wake-Up Reduction
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Solution Overview
Problem
Terminal devices in RRC idle or inactive modes frequently wake up to monitor paging messages with different eDRX cycles, leading to increased power consumption and reduced standby time due to the need to monitor both core network and radio access network-initiated paging messages.
Innovation Solution
The terminal device determines a paging hyperframe based on the least common multiple of or the largest value of the eDRX cycles configured by the core network and the access network, and a time window is defined to monitor both types of paging messages simultaneously, reducing the number of wake-ups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device monitors paging messages based on different eDRX cycles for core network and radio access network separately, then both types of paging messages can be received, but the terminal device needs to wake up frequently, increasing power consumption and reducing standby time
Solution Approach 1:
The patent merges the monitoring of first paging messages (from core network) and second paging messages (from radio access network) into a single unified time window within the same paging hyperframe. This allows the terminal device to monitor both types of paging messages simultaneously during one wake-up period, rather than separately during different wake-up periods, thereby reducing the frequency of wake-ups and lowering power consumption while maintaining reliable reception of both paging message types
2Reliability
If the terminal device monitors paging messages based on different eDRX cycles for core network and radio access network separately, then both types of paging messages can be received, but the standby time is reduced due to frequent wake-ups
Solution Approach 1:
The patent combines the monitoring functions for both first and second paging messages into a single unified monitoring window within one paging hyperframe. This consolidation allows the terminal device to remain in idle or inactive mode for longer continuous periods, extending standby time while ensuring that both core network and radio access network paging messages are reliably received during the unified monitoring period
3Reliability
If multiple eDRX cycles are configured for monitoring different paging messages, then comprehensive paging coverage is achieved, but the device complexity increases due to managing multiple monitoring cycles
Solution Approach 1:
The patent simplifies device complexity by merging the management of multiple eDRX cycles into a single unified paging hyperframe structure with one consolidated monitoring window. Instead of independently managing separate monitoring schedules for first and second paging messages, the terminal device uses a single unified timing structure that accommodates both paging message types, thereby maintaining comprehensive paging coverage while significantly reducing the complexity of monitoring cycle management
Data Source
AI summary
This application relates to the field of communication technologies, and provides a communication method and apparatus. The method includes: A terminal device determines a paging hyperframe, and monitors scheduling information of a first paging message and scheduling information of a second paging message in a time window of the paging hyperframe. The time window is determined based on a first paging time window and a second paging time window, or the time window is determined based on the first paging time window. A start position of the first paging time window is determined based on a first extended discontinuous reception cycle, and a start position of the second paging time window is determined based on a second extended discontinuous reception cycle. The first paging message is initiated by a core network, and the second paging message is initiated by an access network.