Network Slice-Based Paging Method for Signaling Overhead Reduction
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Solution Overview
Problem
In the Long Term Evolution (LTE) and New Radio (NR) systems, the existing paging methods result in high paging signaling overhead and frequent reading of irrelevant paging messages by terminal devices due to simultaneous paging across multiple network slices, especially when Paging Occasions (POs) for different slices are the same.
Innovation Solution
A method where a network device sends paging messages to terminal devices based on the specific network slices they use, optimizing the paging process by selecting the appropriate slice for transmission, either by determining a primary slice for non-emergent or simultaneous transmission for emergent scenarios, and using indication information to ensure the terminal device only receives messages intended for its slice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If simultaneous paging is performed across all network slices, then all terminal devices can be reached, but paging signaling overhead increases and terminal devices frequently read irrelevant paging messages
Solution Approach 1:
The patent segments the paging process by network slice type (emergency vs. non-emergency slices) and by terminal device slice support status. The network device determines whether to perform paging on a first network slice or a second network slice based on whether the terminal supports emergency services on that slice, thereby avoiding unnecessary paging transmissions and reducing signaling overhead while maintaining reliable reachability.
2Reliability
If paging is performed on all network slices, then no paging messages are missed, but terminal devices waste power reading irrelevant messages
Solution Approach 1:
The patent extracts and separates the paging process into distinct paths based on network slice type. By identifying emergency network slices versus non-emergency slices, the system extracts only the necessary paging transmissions for each terminal device, preventing terminals from reading irrelevant paging messages and reducing their power consumption while ensuring no important messages are missed.
3Loss of energy
If paging is performed on a single network slice, then signaling overhead is reduced, but paging efficiency decreases for terminals using multiple slices
Solution Approach 1:
The patent implements a dynamic paging approach where the network device adaptively selects which network slice to page based on real-time terminal device capabilities and service requirements. The system dynamically determines whether to page on the first network slice or second network slice, optimizing the balance between signaling overhead reduction and paging efficiency for multi-slice terminals.
Data Source
AI summary
The disclosure provides a paging method, a network device and a terminal device. The method includes that: a network device sends a paging message to a terminal device based on at least one network slice used by the terminal device. Accordingly, the network device pages the terminal device based on the network slice of the terminal device, which, compared with simultaneous paging of all network slices, may reduce a paging signaling overhead and avoid the terminal device frequently reading paging messages which do not belong to it.