Paging Early Indication for Multi-Beam Power Saving
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Solution Overview
Problem
In wireless communication networks, User Equipment (UE) in idle or inactive states incur unnecessary power consumption by continuously monitoring paging occasions, even when no paging messages are sent, due to the lack of efficient early indication mechanisms.
Innovation Solution
The introduction of Paging Early Indication (PEI) that includes a set of downlink monitoring occasions associated with multiple transmission beams, allowing the UE to selectively monitor only when a paging message is indicated, thereby reducing unnecessary monitoring and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continuously monitors paging occasions in idle or inactive states, then the network can reliably deliver paging messages to the UE, but the UE incurs unnecessary power consumption when no paging messages are sent
Solution Approach 1:
The network performs preliminary action by sending a paging early indication before the actual paging occasion. This indication pre-informs the UE whether a paging message will be transmitted, allowing the UE to decide in advance whether to wake up for the paging occasion or remain in sleep mode, thus avoiding unnecessary power consumption while ensuring reliable delivery when needed.
Solution Approach 2:
A paging early indication mechanism is introduced as an intermediary between the network's paging decision and the UE's monitoring action. This intermediary signal carries advance information about upcoming paging messages, enabling the UE to make informed decisions about whether to activate its receiver for the actual paging occasion.
2Reliability
If the UE monitors multiple downlink monitoring occasions corresponding to multiple transmission beams, then the paging message can be reliably received regardless of beam direction, but the power consumption increases due to monitoring all occasions
Solution Approach 1:
The paging early indication is sent in advance before the multiple downlink monitoring occasions, allowing the UE to determine whether any paging message will be transmitted across multiple beams. If the indication shows no paging message is coming, the UE can skip all monitoring occasions for that beam set, avoiding exhaustive monitoring while maintaining reliability when paging is actually present.
Data Source
AI summary
The present disclosure relates to the field of communications, and provides a power saving method and apparatus, a device, and a readable storage medium. The method comprises: receiving a paging early indication (PEI), the PEI comprising a group of downlink monitoring timings, a search space corresponding to a downlink monitoring timing in the PEI being associated with a paging search space of a paging timing corresponding to the PEI, and the group of downlink monitoring timings corresponding to at least two transmission beams; and monitoring the paging timing on the basis of the PEI. When a PEI is introduced for an NR system, a scenario of multiple beams needs to be considered; in order for this, a monitoring mode of the PEI is designed, such that UE can correctly monitor a PEI signal.