Network Slice Selection via NSSAI Feedback
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Solution Overview
Problem
Current 5G network technologies lack flexibility and efficiency in providing network services to user equipment, as they do not effectively utilize network slicing to allocate appropriate network slice instances and function instances based on user requests, leading to suboptimal resource management and increased costs.
Innovation Solution
A communication method and apparatus that selects a network slice instance and function instance corresponding to user equipment requests, utilizing network slice selection assistance information to allocate resources efficiently, enabling flexible 5G core network architecture and maximizing network effectiveness and cost reduction through network virtualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is not effectively utilized, then network service provision lacks flexibility and efficiency, but implementing network slicing increases system complexity
Solution Approach 1:
The network is segmented into multiple network slice instances, each tailored to specific service requirements. The NSSF divides the network into independent slice instances (e.g., slice instance 1, slice instance 2) that can be selectively allocated to UEs based on their service needs, enabling flexible network service provision while maintaining manageable complexity through modular organization
Solution Approach 2:
The NSSF performs multiple functions including receiving NSSAI from UEs, selecting appropriate network slice instances, and allocating network function instances across different slice instances. This multi-functional approach consolidates complexity into a single management entity while providing diverse network slicing capabilities
2Productivity
If network slice instances are not properly selected and allocated, then resource management becomes inefficient and costs increase, but implementing sophisticated selection mechanisms increases system complexity
Solution Approach 1:
The NSSF uses feedback from NSSAI (Network Slice Selection Assistance Information) provided by UEs to make intelligent selection decisions. The system receives service type indicators from UEs and uses this feedback to select appropriate network slice instances and network function instances, optimizing resource allocation based on actual service requirements rather than using fixed complex rules
Solution Approach 2:
UEs actively participate in the network slice selection process by providing NSSAI that indicates their service requirements. This self-service approach allows UEs to express their needs, and the NSSF automatically matches them with appropriate network slice instances, reducing the need for complex centralized control mechanisms
Data Source
AI summary
Provided is a communication method and apparatus using network slicing. A communication method of a communication apparatus performing communication with a user equipment receives a predetermined request from the user equipment, selects a single network slice instance to be allocated to the user equipment from among a plurality of network slice instances in the communication apparatus in response to the request, selects a single network function instance to be allocated to the user equipment from among a plurality of network function instances included in the selected network slice instance. The network slice instance is in an instantiated form of a network slice that includes at least one network function and resource for providing a network service having a predetermined capability and characteristic to the user equipment.