Multicast Session Wake-Up Signaling for Selective UE Monitoring
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Solution Overview
Problem
Monitoring multiple multicast sessions for wake-up signals leads to inefficient resource use and increased power consumption in user equipment (UE) due to active durations without information transmission from the base station.
Innovation Solution
A UE receives configuration information from a base station indicating wake-up signal configurations for multicast sessions, allowing it to monitor wake-up signals before active durations and determine which sessions to monitor based on these configurations, thereby optimizing resource use and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE monitors multiple multicast sessions for wake-up signals, then the UE can receive information from multiple multicast sessions, but the UE monitors active durations during which the base station does not transmit information, leading to increased power consumption
Solution Approach 1:
The patent segments the monitoring task by introducing a wake-up signal mechanism that divides the continuous monitoring requirement into discrete check-points. The UE only performs full monitoring when a wake-up signal is detected, otherwise it enters a low-power state. This segmentation resolves the contradiction by maintaining multicast session adaptability while reducing power consumption during inactive periods.
Solution Approach 2:
The base station performs preliminary action by transmitting wake-up signals before the UE needs to monitor active durations. This advance notification allows the UE to prepare for monitoring only when necessary, avoiding unnecessary power consumption during periods when no information will be transmitted. The wake-up signal acts as a preliminary trigger that reconciles the need for session availability with energy efficiency.
2Adaptability or versatility
If the UE monitors multiple multicast sessions, then the UE can receive information from the base station during multiple time periods, but the UE inefficiently uses resources by monitoring during active durations without information transmission
Solution Approach 1:
The system implements self-service through the wake-up signal mechanism where the base station automatically notifies the UE when information is available. The UE relies on this self-service notification rather than continuously checking all multicast sessions, reducing resource waste while maintaining the ability to receive information from multiple sessions. This self-service approach resolves the contradiction by making the system self-regulating based on actual transmission needs.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. One method for providing a wake-up signal to user equipments (UEs) that support multiple multicast sessions may include a base station transmitting configuration information to a UE indicating a wake-up signal configuration for one or more multicast sessions. Accordingly, the UE may monitor the one or more multicast sessions for a wake-up signal and receive, prior to an active duration of a multicast session, a wake-up signal from the base station. The wake-up signal may include control signaling indicating to the UE which of a set of multicast sessions the UE is to monitor. The UE may determine which multicast sessions to monitor based on the received control signaling.