Network Slice Session Establishment With Terminal-Side Compatibility Checks
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Solution Overview
Problem
In existing network slicing technologies, session connections fail when a terminal device attempts to access a network slice not supported by the current cell or network, leading to resource wastage due to unsuccessful session establishment requests.
Innovation Solution
A terminal device processes session establishment requests based on information about supported and allowed network slices, and sends appropriate indication information to a core network device to facilitate network slice remapping, fallback, cell redirection, or service remapping to reduce resource overheads and delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the terminal device sends a session establishment request without checking network slice support, then the session establishment process is simple, but resources are wasted due to unsuccessful session establishment when the network slice is not supported
Solution Approach 1:
The terminal device performs preliminary checking of network slice support information before sending the session establishment request. The terminal obtains first information indicating network slices supported by the current cell or access device, and second information indicating allowed network slices, then determines whether the requested network slice is supported before initiating session establishment. This preliminary action prevents resource waste from unsuccessful session establishment attempts.
2Loss of energy
If the terminal device checks network slice support information before session establishment, then resource waste is reduced, but the complexity of the session establishment process increases
Solution Approach 1:
The terminal device autonomously performs the checking of network slice support information and determination of whether to send the session establishment request without requiring additional network device intervention. The terminal uses obtained first information (supported network slices) and second information (allowed network slices) to self-determine compatibility, reducing overall system complexity while maintaining resource efficiency.
3Adaptability or versatility
If the terminal device attempts to establish a session with an unsupported network slice, then the network can provide comprehensive service support, but access delays occur due to failed session establishment
Solution Approach 1:
The terminal device performs preliminary verification of network slice support status before attempting session establishment. By checking whether the requested network slice is in the list of supported network slices (first information) and allowed network slices (second information), the terminal avoids initiating session establishment requests that would inevitably fail, thereby eliminating access delays while the network maintains comprehensive service support capabilities.
Data Source
AI summary
This application provides a communication method and a communication apparatus where a terminal device receives information about supported and allowed network slices and processes a session establishment request based on this information to optimize network efficiency and service delivery. The terminal device receives first information that indicates at least one supported network slice, which includes a network slice supported by at least a first cell or a network slice supported by a first access device. The first cell includes a cell currently accessed by the terminal device, and the first access device includes an access device currently accessed by the terminal device; the terminal device receives second information that indicates at least one allowed network slice; and the terminal device processes a session establishment request of a first service based on the first information and the second information to reduce a waste of resources.