Multicast Paging Early Indication Signaling for UE Power Savings
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Solution Overview
Problem
Conventional paging early indication (PEI) signaling techniques are deficient in efficiently managing multicast paging operations in wireless communications systems, leading to high signaling overhead and inefficient power usage in user equipment (UEs).
Innovation Solution
The described techniques improve multicast paging operations by enabling a base station to transmit control signaling indicating parameters for receiving multicast PEIs and transmitting a multicast PEI to a group of UEs, allowing them to decode and monitor for multicast paging messages efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional PEI signaling techniques are used for multicast paging, then paging notification can be provided to UEs, but signaling overhead increases and power efficiency deteriorates
Solution Approach 1:
The PEI signaling is segmented into group-specific PEI messages that are targeted to specific multicast groups. Each PEI message contains identifiers (such as group ID or service ID) that allow UEs to determine whether the message is intended for their group. This segmentation reduces the overhead compared to sending individual PEI messages to each UE while maintaining power efficiency by enabling UEs to quickly identify and process only relevant paging notifications.
2Reliability
If individual PEI messages are sent to each UE for multicast paging, then each UE can be notified individually, but signaling overhead increases significantly
Solution Approach 1:
Multiple PEI notifications for different UEs belonging to the same multicast group are merged into a single group-specific PEI message. The message includes group identifiers that allow all UEs in the group to identify themselves as recipients. This combining approach maintains reliable notification delivery to all group members while significantly reducing signaling overhead compared to sending separate PEI messages to each UE individually.
3Reliability
If UEs continuously monitor for paging messages, then no paging messages are missed, but power consumption increases
Solution Approach 1:
The system implements preliminary action by sending PEI (Paging Early Indication) messages before actual paging messages. These PEI messages contain group-specific identifiers that allow UEs to determine in advance whether a paging message is intended for their multicast group. UEs can use this early indication to wake up only when necessary, maintaining reliable paging reception while significantly reducing power consumption by avoiding continuous monitoring.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, control signaling that indicates one or more parameters pertaining to reception of paging early indications (PEIs). The UE may receive a PEI from the base station in accordance with the one or more parameters. The UE may determine, based on the PEI, whether the UE is scheduled to receive a multicast paging message from the base station in a subsequent paging occasion (PO). If the UE is scheduled to receive a multicast paging message, the UE may monitor for the multicast paging message in the subsequent PO. Otherwise, the UE may enter a low-power state during the subsequent PO, which may result in greater power savings at the UE. Aspects of the present disclosure may provide for improved multicast paging operations between the UE and the base station.