PEI Skipping Across DRX Cycles for Lower 5G Paging Power
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, face inefficiencies in power consumption due to frequent monitoring for paging early indications (PEI), which can be improved by allowing devices to skip multiple PEI occasions and enter a reduced power state for extended periods.
Innovation Solution
Devices are configured to skip multiple PEI occasions and enter a reduced power state for a specified duration, transitioning to an increased power state only when necessary to monitor synchronization signal blocks or reference signals, thereby conserving power and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices frequently monitor for paging early indications (PEI) in 5G NR systems, then paging message reception reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements discontinuous receive (DRX) cycles where devices periodically switch between active monitoring states and sleep states. During DRX cycles, devices monitor for PEI only at designated occasions rather than continuously, reducing power consumption while maintaining reliable paging message reception when actually needed.
Solution Approach 2:
The patent introduces a mechanism to skip multiple PEI occasions consecutively by setting a skip indicator to a second value. When the skip indicator indicates skipping, the device transitions to a sleep state and skips monitoring multiple upcoming PEI occasions, thereby extending the reduced power state duration and significantly reducing power consumption while still maintaining the ability to receive paging messages when necessary.
2Use of energy by moving object
If devices enter reduced power state for extended periods by skipping PEI monitoring, then power consumption is reduced, but ability to receive paging messages timely may be compromised
Solution Approach 1:
The patent employs a skip indicator mechanism that provides feedback control for PEI monitoring. The network can dynamically adjust the skip behavior by setting the skip indicator to different values, allowing devices to adapt their monitoring behavior based on network conditions and priority requirements, thus balancing power savings with timely paging message reception.
Solution Approach 2:
The patent makes the PEI monitoring behavior dynamic rather than static. The skip indicator can be configured to different values (first value for no skipping, second value for skipping) allowing the device to dynamically adjust between active and sleep states based on current needs, enabling flexible trade-offs between power consumption and timely paging reception.
3Reliability
If devices monitor all PEI occasions, then paging message reception is ensured, but battery life is reduced
Solution Approach 1:
The patent implements DRX cycles that create periodic monitoring intervals instead of continuous monitoring. Devices wake up at specific PEI occasions within DRX cycles to check for paging messages, then return to sleep state. This periodic action significantly extends battery life by reducing the total time the device spends in high-power monitoring states while still ensuring paging messages are received during active periods.
Solution Approach 2:
The patent allows devices to skip multiple PEI occasions by setting the skip indicator to indicate skipping. This enables the device to extend its reduced power state duration by consecutively skipping several PEI monitoring opportunities, thereby significantly extending battery life while maintaining the capability to receive paging messages when the skip indicator indicates no skipping.
Data Source
AI summary
Aspects described herein relate to configuring a device to skip multiple paging early indication (PEI) occasions. An indication of a skip duration of multiple discontinuous receive (DRX) cycles to skip in monitoring for a paging early indication (PEI) can be received, and a reduced power state can be entered for the skip duration. After the skip duration, an increased power state can be entered to monitor for the PEI, a synchronization signal block (SSB), or one or more reference signals.