Paging Early Indication for Low-Power 5G Idle Reception
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Solution Overview
Problem
In communication systems like 5G, terminals in idle or inactive modes consume high power due to frequent paging information detection on each Paging Occasion (PO).
Innovation Solution
A network device transmits a Paging Early Indication (PEI) to terminals in idle or inactive modes, using power-saving signals to indicate whether paging information detection is required, before the actual PO, which includes cell-specific or group-specific power-saving signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals detect paging information on each Paging Occasion (PO), then paging information can be received reliably, but terminal power consumption increases
Solution Approach 1:
The network device transmits a Paging Early Indication (PEI) signal before the actual PO to preliminarily indicate whether paging information will be transmitted. Terminals wake up earlier to detect this PEI signal, and based on its value, decide whether to proceed with full paging detection at the PO. This preliminary action allows terminals to avoid unnecessary wake-ups and power consumption while ensuring reliable paging reception when needed.
Solution Approach 2:
The PEI signal acts as an intermediary between the network device and the terminal for paging indication. Instead of directly transmitting paging information or forcing terminals to always wake up for PO, the PEI serves as a mediator that provides advance notification. This intermediary mechanism enables the network to control terminal wake-up behavior efficiently, reducing power consumption while maintaining reliable paging delivery.
2Use of energy by moving object
If terminals wake up early to check for paging information, then power consumption is reduced, but detection timing and synchronization become more complex
Solution Approach 1:
The PEI signal is transmitted periodically at fixed intervals before each PO, following a regular pattern that terminals can predict and synchronize to. This periodic action simplifies the complexity by providing a predictable, rhythmic structure to the early indication mechanism, making it easier for terminals to manage their wake-up schedules and detection timing without requiring complex adaptive algorithms.
Solution Approach 2:
The system allows flexible configuration of PEI transmission parameters such as the time offset between PEI and PO, the periodicity of PEI transmission, and the association between PEI resources and PO resources. By enabling parameter changes and optimization, the system can adapt to different network conditions and terminal capabilities, balancing power savings with detection complexity according to specific deployment scenarios.
Data Source
AI summary
A signal transmission method, a network device, a terminal and a storage medium are provided. The signal transmission method includes transmitting, by a network device, a PEI to a terminal in an idle mode or an inactive mode. The PEI includes at least one of a first power-saving signal or a second power-saving signal, the PEI is used to indicate whether the terminal is to detect paging information on PO, the PEI is transmitted before the PO, and the PO includes at least one PO or at least one PO group.