Paging Slot Selection in DRX Multi-Beam Reception
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Solution Overview
Problem
In 5G communication systems, electronic devices face challenges in identifying the appropriate time slots for monitoring paging messages in multi-beam environments, leading to unnecessary power and resource consumption due to the network transmitting paging messages for each beam index without clear guidance on device selection.
Innovation Solution
The electronic device determines the time slot for monitoring based on signal strength measurements from previous periods, allowing it to selectively wake up and monitor the physical downlink control channel only in selected time slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network transmits paging messages for each beam index in each time slot, then the paging message coverage is improved, but the device power consumption increases due to unnecessary wake-ups
Solution Approach 1:
The device performs signal strength measurements in advance during previous periods to predict the best time slot for monitoring paging messages. This preliminary action allows the device to wake up only when necessary, avoiding unnecessary power consumption while ensuring reliable paging message reception.
Solution Approach 2:
The device dynamically adjusts its monitoring behavior by selecting different time slots based on measured signal characteristics and device state. Instead of monitoring all time slots statically, the device adapts its monitoring schedule to actual channel conditions, reducing power consumption while maintaining coverage.
2Reliability
If the device monitors all time slots for paging messages, then the paging message reception reliability is improved, but the resource consumption increases
Solution Approach 1:
The device performs preliminary signal strength measurements in previous periods to identify the optimal time slot for paging message monitoring. This advance preparation enables the device to focus resources on the most promising time slot, maintaining reception reliability while reducing overall resource consumption.
Solution Approach 2:
Instead of monitoring all time slots equally, the device performs partial monitoring by selecting only the most suitable time slot(s) based on signal measurements. This partial action approach achieves sufficient paging message reception reliability without the excessive resource consumption of universal monitoring.
3Reliability
If the device wakes up frequently to monitor paging messages, then the paging message detection capability is improved, but the battery life decreases
Solution Approach 1:
The device performs signal strength measurements in advance during previous periods to predict the best monitoring time slot. This preliminary measurement capability allows the device to wake up less frequently while still detecting paging messages reliably, thereby extending battery life.
Solution Approach 2:
The device adopts periodic monitoring at strategically selected time slots rather than continuous or frequent wake-ups. By spacing out wake-up events and concentrating monitoring efforts in the most promising time slots, the device maintains detection capability while preserving battery life.
Data Source
AI summary
According to an embodiment, an electronic device may comprise: a memory, at least one communication circuit, and at least one processor, wherein the at least one processor is configured to: receive, via the at least one communication circuit, multiple synchronization signal (SS)/physical broadcast channel (PBCH) blocks (SSBs) from a network; identify multiple time slots corresponding to the multiple SSBs, respectively; in a discontinuous reception (DRX) mode, based on a measurement result of a signal measured in at least one of the multiple time slots in a previous period, select at least one time slot in which monitoring is to be performed in a current period; and wake up in the selected at least one time slot to monitor a physical downlink control channel (PDCCH).