Network Slice Selection via Terminal Identification
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Solution Overview
Problem
The definition and connection method for Network Slicing in 3GPP's SMARTER and NextGen systems are unclear, specifically regarding how terminals connect to a core network divided by slices.
Innovation Solution
A communication control method involving attach procedures where terminal apparatuses transmit identification information for network slice type, slice identification, and isolation level to base stations and Mobility Management Entities (MMEs), allowing for selective connection to appropriate network slices based on these criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a core network is divided into multiple network slices to support diversifying services and terminals, then the adaptability and versatility of the network is improved, but the complexity of the network architecture and connection procedures increases
Solution Approach 1:
The core network is segmented into multiple independent network slices, each capable of supporting different services and terminals with specific performance requirements. Each network slice is identified by a unique network slice identifier, allowing the network to be divided into functional segments that can be independently managed and configured.
Solution Approach 2:
The network slice selection mechanism is designed to be universal, supporting multiple services and terminal types through a common framework. The base station and core network entities use standardized procedures to handle network slice selection across different service scenarios, making the system multi-functional without requiring separate mechanisms for each service type.
2Ease of operation
If specific definition and procedures for network slice connection are not established, then the ease of operation is maintained, but the reliability of network slice connection and service delivery deteriorates
Solution Approach 1:
The terminal determines the appropriate network slice before establishing the connection, based on pre-configured network slice identifiers and service requirements. This preliminary determination ensures that the terminal connects to the correct network slice from the start, avoiding connection failures and service delivery issues that would occur with trial-and-error approaches.
Solution Approach 2:
The base station receives the network slice identifier from the terminal and uses this information to route the terminal to the appropriate core network slice. This feedback mechanism ensures that the network can verify and confirm the correct network slice selection, providing reliability while maintaining a simple connection procedure where the terminal's initial selection is respected and enforced by the network.
Data Source
AI summary
Provided is a communication procedure for data transmission and/or reception suitable for a Network Slice and a DeCOR. One or a plurality of Network Slices are included in a core network managed by the network operator, the Network Slice is configured of one or a plurality of Network Functions, and based on registration information of a terminal apparatus or a request of the terminal apparatus, the terminal apparatus performs processing to connect to the one or the plurality of Network Slices corresponding to a service or an application. Furthermore, based on an authentication result from the network, the terminal apparatus performs processing to connect to a supplemental Network Slice.