SDN Controlled Access Slice Pooling for 5G Resource Allocation
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in dynamically managing access slices and network resources to meet varying service requirements and network conditions, such as increased demand and disparate access technologies, which affects service quality and efficiency.
Innovation Solution
Implementing a dynamic access slice pooling system with Software Defined Network (SDN) controlled capabilities, where radio access network devices instantiate and manage virtual network slices based on service requests, adjusting resources and technologies to optimize performance for specific services and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic access slice pooling and SDN controlled capabilities are implemented, then service quality and resource allocation efficiency are improved, but device complexity and system configuration difficulty increase
Solution Approach 1:
An SDN controller is introduced as an intermediary component that centralizes the management and control of network slices. The SDN controller handles slice instantiation, resource allocation, and coordination between multiple radio access network devices, thereby improving resource allocation efficiency while managing system complexity through centralized control rather than distributed complexity
Solution Approach 2:
The system implements multi-functional radio access network devices that can host multiple virtual network slices simultaneously. Each device is designed to accommodate diverse service requirements (e.g., eMBB, URLLC, mMTC) through virtualization, allowing a single physical device to perform multiple network functions and serve different service types without requiring separate dedicated hardware for each service
2Adaptability or versatility
If access slices are dynamically instantiated based on service requests, then adaptability to diverse services is improved, but processing time and response delays increase
Solution Approach 1:
The system pre-instantiates network slices for anticipated service types and maintains them in a ready state before actual service requests arrive. By preparing network slices in advance based on predicted traffic patterns and service demands, the system can quickly assign pre-configured slices to incoming requests, reducing the time required for slice instantiation while maintaining high adaptability to diverse services
Solution Approach 2:
The system implements dynamic slice allocation and resource adjustment mechanisms that can rapidly respond to service requests. Network slices can be dynamically instantiated, activated, or deactivated based on real-time service demands, allowing the system to adapt to diverse services while minimizing response delays through flexible, on-demand resource allocation
3Use of energy by moving object
If multiple virtual network functions are assigned to single slices, then resource utilization is improved, but service isolation and security are worsened
Solution Approach 1:
The system segments virtual network functions and network resources into isolated network slices, where each slice is a logically separated network instance with dedicated resources and security boundaries. This segmentation allows multiple virtual network functions to be assigned to single slices while maintaining service isolation through virtualization, as each slice operates in an isolated environment with controlled access to shared physical resources
Solution Approach 2:
The system applies different quality levels and security policies to different network slices based on their specific service requirements. Each slice can have customized resource allocation, security parameters, and performance characteristics tailored to its intended service (e.g., high security for URLLC, high bandwidth for eMBB), allowing resource sharing while maintaining appropriate isolation and security for each service type
Data Source
AI summary
Various embodiments disclosed herein provide for a dynamic access slice pooling system with software defined network (SDN) controlled capabilities in a 5G wireless communications system. A radio access network device can have one or more slices instantiated on the device that facilitate various services being requested by user equipment devices. A slice can have one or more virtual network functions that are specialized for particular services. When a user equipment device requests a service, the service can be assigned to a slice based on the type of service being requested. If the type of slice associated with the service is not currently operational, the SDN controller on the radio access network device can instantiate a new slice with the virtual network functions selected for the service being requested.