NFVO SLA-Based Virtual Resource Allocation in NFV Systems
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Solution Overview
Problem
In Network Functions Virtualization (NFV) systems, the current resource allocation method often fails to meet service quality requirements, leading to a low qualification hit rate for virtual resource applications, as the Network Functions Virtualization Orchestrator (NFVO) does not consider Service Level Agreement (SLA) parameters when requesting NFVI virtual resources.
Innovation Solution
The proposed solution involves an SLA-based resource allocation method where the NFVO considers NFVI SLA parameters when requesting virtual resources, determining the required SLA parameters for network services and virtualized network functions, and grouping SLA parameters based on preset rules to identify target resource pools that meet the SLA requirements, thereby ensuring the obtained virtual resources meet user requirements and improving the qualification hit rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the NFVO applies for NFVI virtual resources without considering SLA parameters, then the resource application process is simple and fast, but the qualification hit rate is low and service quality requirements are not met
Solution Approach 1:
The patent applies preliminary action by having the NFVO determine the SLA parameters required for the network service and its VNFs before applying for NFVI virtual resources. This advance determination ensures that the resource application includes necessary SLA information, improving the qualification hit rate without significantly complicating the overall process.
Solution Approach 2:
The patent introduces an intermediary mechanism by determining SLA parameters as a intermediate step between service requirements and resource allocation. This intermediary process translates service quality requirements into specific NFVI resource specifications, enabling better matching between allocated resources and service quality expectations.
2Reliability
If the NFVO applies for NFVI virtual resources multiple times to meet service quality, then the service quality requirement is satisfied, but the resource application efficiency is reduced
Solution Approach 1:
The patent eliminates the need for multiple resource applications by determining all necessary SLA parameters in advance before the resource application. This preliminary determination ensures that the first resource application includes complete SLA information, achieving high qualification hit rate and avoiding repeated applications, thus maintaining high resource application efficiency.
3Manufacturing precision
If the NFVO determines NFVI SLA parameters based on network service SLA, then the virtual resources meet user requirements, but the complexity of parameter determination increases
Solution Approach 1:
The patent manages the complexity of parameter determination by establishing SLA parameter relationships in advance through preliminary action. The NFVO determines the mapping between network service SLA parameters and NFVI SLA parameters before resource allocation, which streamlines the determination process while ensuring precise resource allocation that meets user requirements.
Solution Approach 2:
The patent uses VNF SLA parameters as an intermediary to bridge network service SLA requirements and NFVI resource specifications. This intermediary layer simplifies the determination process by providing a structured translation path from service-level requirements to infrastructure-level parameters, improving both precision and manageability.
Data Source
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AI summary
Embodiments of the present invention provide an SLA-based resource allocation method and an NFVO. The method includes: receiving, by an NFVO, a network service instantiation request, where the network service instantiation request includes an identifier of an SLA of a network service; determining, by the NFVO based on the identifier of the SLA of the network service, an NFVI SLA parameter required for instantiating the network service; further obtaining, from a VIM based on the NFVI SLA parameter, a virtual resource meeting a requirement of the NFVI SLA parameter; and instantiating the network service based on the obtained virtual resource. In the method, the NFVO considers the NFVI SLA parameter when applying for the virtual resource, so that the obtained virtual resource meets a user requirement and a qualification hit rate of resource application is improved.