UE Relay Wake-Up Signaling for Joint Paging Power Savings
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Solution Overview
Problem
In wireless communications systems, the gNB is unaware of the different capabilities of relay nodes and UEs regarding their ability to receive wake-up signals (WUS) to exit from a low power state, leading to inefficient power management and resource utilization during paging procedures.
Innovation Solution
A relay node shares a list of connected UEs and their WUS capabilities with the gNB, enabling joint paging and optimizing power savings for both the relay node and its associated UEs by utilizing WUS support from the gNB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the gNB performs paging procedures without awareness of relay node and UE WUS capabilities, then the paging procedure can be performed, but power management efficiency deteriorates due to unnecessary wake-ups and inability to utilize low power states effectively
Solution Approach 1:
The relay node performs preliminary actions by determining WUS capabilities of connected UEs and providing this capability information to the gNB before paging procedures occur. This advance preparation enables the gNB to make informed decisions about WUS transmission, preventing unnecessary energy consumption during actual paging operations.
Solution Approach 2:
A feedback mechanism is established where the relay node continuously monitors and reports WUS capabilities of UEs to the gNB. This feedback loop allows the network to adapt paging strategies based on current capability information, optimizing power management dynamically and reducing energy waste from inappropriate paging transmissions.
2Reliability
If the relay node monitors paging occasions for all connected UEs individually, then complete paging coverage is achieved, but resource utilization deteriorates due to redundant monitoring and processing
Solution Approach 1:
The patent merges the monitoring function by enabling the relay node to monitor paging occasions on behalf of multiple connected UEs simultaneously. When the relay node is paged, it can determine which connected UEs need to be paged based on their capabilities and forward appropriate paging indications, consolidating redundant monitoring activities into a single efficient operation.
Solution Approach 2:
The relay node is assigned a universal paging monitoring function that serves multiple UEs. Instead of each UE requiring individual monitoring, the relay node performs multi-functional paging monitoring for all connected UEs, improving resource utilization while maintaining comprehensive paging coverage through its ability to identify and forward pages to appropriate UEs.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications at a relay node. The relay node may transmit capability information of the relay node to a gNode (gNB). The capability information may indicate a capability to receive one or more wakeup signals (WUSs) to exit from a low power state and a list of one or more user equipments (UEs) connected to the gNB via the relay node. The gNB may then send an indication to the relay node that the gNB supports transmission of the one or more WUSs to the relay node for a joint paging of the relay node and the one or more UEs.