A Survey on the Placement of Virtual Resources and Virtual Network Functions

Research output: Contribution to journalReview ArticleScientificpeer-review


Research units

  • University of Oulu
  • Sejong University


Cloud computing and network slicing are essential concepts of forthcoming 5G mobile systems. Network slices are essentially chunks of virtual computing and connectivity resources, configured and provisioned for particular services according to their characteristics and requirements. The success of cloud computing and network slicing hinges on the efficient allocation of virtual resources (e.g. VCPU, VMDISK) and the optimal placement of Virtualized Network Functions (VNFs) composing the network slices. In this context, this paper elaborates issues that may disrupt the placement of VNFs and VMs. The paper classifies the existing solutions for VM Placement (VMP) based on their nature, whether the placement is dynamic or static, their objectives, and their metrics. The paper then proposes a classification of VNF Placement (VNFP) approaches, first, regarding the general placement and management issues of VNFs, and second, based on the target VNF type.


Original languageEnglish
Article number8556457
Pages (from-to)1409 - 1434
JournalIEEE Communications Surveys and Tutorials
Issue number2
Early online date2018
Publication statusPublished - 2019
MoE publication typeA2 Review article in a scientific journal

    Research areas

  • NFV, Cloud, Network Slice, 5G, Mobile, and VNF Placement.

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