Common Service Manager Resource Allocation in NFV
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Solution Overview
Problem
The existing NFV system architecture lacks a process and interface for applying and using common services, leading to potential service failures or quality deterioration due to insufficient resources, and inefficient resource utilization.
Innovation Solution
A common service resource application method involving a Common Service Manager (CSM), Virtualized Infrastructure Manager (VIM), and Network Functions Virtualization Orchestrator (NFVO) to manage and allocate resources for Virtual Network Functions (VNFs, ensuring resource reservation and allocation before instantiation to prevent failures and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common services are not integrated into the NFV architecture, then the system architecture remains simple and follows the original NFV design, but VNFs cannot obtain guaranteed common service resources leading to service failures or quality deterioration
Solution Approach 1:
The common service management function is nested within the existing NFV management hierarchy. The CSM is positioned as a subordinate component under the NFVO, allowing it to manage common service resources while integrating into the existing NFV orchestration framework. This nested structure enables reliable common service resource allocation without fundamentally restructuring the entire NFV architecture.
Solution Approach 2:
The Common Service Manager (CSM) acts as an intermediary component between the NFVO and VNFs. It receives resource requirements from VNFs through the NFVO and allocates common service resources accordingly. This intermediary role ensures that VNFs can obtain guaranteed common service resources while maintaining the existing NFV architecture structure.
2Reliability
If common service resources are allocated after VNF instantiation, then the allocation process is simpler, but VNFs may fail to instantiate or experience service quality deterioration due to insufficient resources
Solution Approach 1:
The system performs preliminary resource reservation and allocation before VNF instantiation. When the NFVO receives a VNF instantiation request, it simultaneously triggers the CSM to reserve and allocate common service resources in advance. This preliminary action ensures that required resources are guaranteed before instantiation, preventing service quality deterioration while maintaining efficient instantiation processes.
Solution Approach 2:
The system implements a feedback mechanism where the NFVO monitors the instantiation status of VNFs and the allocation status of common service resources. Based on this feedback, the NFVO can adjust resource allocation decisions and trigger additional resource reservations if needed, ensuring service quality while optimizing instantiation efficiency.
3Reliability
If common service resources are reserved in advance for all possible VNFs, then service reliability is improved, but resource utilization efficiency decreases due to potential waste
Solution Approach 1:
The system performs preliminary resource reservation only when specifically triggered by VNF instantiation requests, rather than pre-reserving resources for all possible VNFs. The CSM reserves common service resources on-demand based on actual instantiation needs, ensuring resource availability when required while avoiding waste from pre-allocation of unused resources.
Solution Approach 2:
The resource allocation system is designed to be dynamic and adaptive. The CSM continuously monitors resource usage patterns and adjusts allocation decisions based on current system state and demand. This dynamic approach allows the system to maintain high resource availability when needed while minimizing waste during periods of lower demand.
Data Source
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AI summary
Embodiments of this application provide a common service resource application method, a related device, and a system. The method includes: receiving, by a common service manager CSM unit, resource requirement information of a common service required by a VNF; and then requesting, based on the resource requirement information of the common service required by the VNF, a virtualized infrastructure manager VIM unit to allocate a resource required by the common service of the VNF. In this embodiment of this application, the CSM unit applies to the VIM unit for the resource of the common service required by the VNF, so as to avoid that the VNF cannot work or service quality deteriorates because the common service has no available resource or resources are insufficient, and avoid a waste of common service resources.