Paging Signal Transmission Using PEI for Terminal Power Saving
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Solution Overview
Problem
In communication systems like 5G, terminals in idle or inactive modes consume high power due to frequent detection of paging information on each Paging Occasion (PO).
Innovation Solution
A network device transmits a Power Saving Signal (PEI) before the PO, which includes a first and second power-saving signal, scrambled with cell and terminal group IDs, allowing the terminal to determine if paging information is present, reducing unnecessary detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal frequently detects paging information on each Paging Occasion to ensure reliable communication, then the reliability of communication is improved, but the power consumption of the terminal increases
Solution Approach 1:
The network device transmits the PEI signal before the actual paging occasion to preliminarily indicate whether paging information will be sent. The terminal detects this preliminary indication first, and only if the PEI indicates paging information is present does the terminal proceed to detect the actual paging information on the PO. This preliminary action avoids unnecessary full paging detection when no paging information is sent, thereby reducing power consumption while maintaining communication reliability.
Solution Approach 2:
The PEI signal acts as an intermediary between the network device and the terminal's paging detection process. Instead of directly detecting paging information on every PO, the terminal first detects the PEI intermediary signal that carries indication information about the presence of paging information. This intermediary mechanism allows the terminal to make informed decisions about whether to proceed with full paging detection, reducing unnecessary power consumption while ensuring reliable communication when paging information is actually present.
2Loss of information
If the terminal detects paging information on every Paging Occasion to ensure no messages are missed, then the completeness of information reception is improved, but the time and energy waste increase
Solution Approach 1:
The PEI signal provides preliminary indication before the actual paging occasion, allowing the terminal to advance knowledge about whether paging information will be transmitted. This preliminary action enables the terminal to skip unnecessary detection procedures when no paging information is present, reducing time waste while ensuring that when paging information is indicated as present, the terminal is prepared to detect it completely, thus maintaining information reception completeness.
3Measurement precision
If the terminal performs full paging detection on each PO to ensure accurate information reception, then the measurement precision is improved, but the power consumption increases
Solution Approach 1:
The PEI signal serves as an intermediary that provides accurate indication information about the presence of paging information. The terminal detects this intermediary signal first, which carries precise information about whether paging data will be transmitted. Based on this accurate intermediary indication, the terminal can make precise decisions: perform full detection only when the PEI indicates paging information is present, and skip detection when it indicates no paging information. This maintains measurement precision while significantly reducing unnecessary power consumption.
Data Source
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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.