Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure
Network Function Virtualization (NFV) is a system that provides application services by connecting virtual network functions (VNFs), and is expected to accommodate new service requests through the development of new VNF and connection with existing ones. Because VNFs are implemented by software, the...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9193890/ |
| _version_ | 1811210757356912640 |
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| author | Yuki Tsukui Shin'ichi Arakawa Shiori Takagi Masayuki Murata |
| author_facet | Yuki Tsukui Shin'ichi Arakawa Shiori Takagi Masayuki Murata |
| author_sort | Yuki Tsukui |
| collection | DOAJ |
| description | Network Function Virtualization (NFV) is a system that provides application services by connecting virtual network functions (VNFs), and is expected to accommodate new service requests through the development of new VNF and connection with existing ones. Because VNFs are implemented by software, their design and placement are important problems for the NFV system, which reduce the current and future system costs. In this article, we investigate the design principles and the placement policies that reduce the cost of designing and developing VNFs for accommodating new service requests. As for the design policy, we introduce a Core/Periphery-Based Design (CPBD) that utilizes the core/periphery concept for developing VNFs. In CPBD, “core” VNFs are developed in advance and repeatedly used to accommodate future service requests. While “core” VNFs are common to current and future service requests, “periphery” VNFs are developed and customized for each service request. Next, we investigate the placement policies of VNFs for CPBD to fully utilize the nature of their core/periphery structure. In addition, we examine the Center-Located Core/Periphery placement (CLCP) policy and the Geographically-Distributed Core/Periphery placement (GDCP) policy, and evaluate the long-term cost of the NFV system under resource restrictions to run VNFs. Our results show that CPBD reduces the long-term cost of design and development of VNFs by 23% compared to the design with no core VNFs. Moreover, in the case of no resource restrictions, both CLCP and GDCP reduce the long-term costs of placing and connecting VNFs by 15% compared to the existing VNF placement algorithm. With resource constraints, GDCP reduces the long-term costs over CLCP by 11%. |
| first_indexed | 2024-04-12T05:01:02Z |
| format | Article |
| id | doaj.art-1c163591f0784d91ab8dcf45d6760057 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T05:01:02Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1c163591f0784d91ab8dcf45d67600572022-12-22T03:46:59ZengIEEEIEEE Access2169-35362020-01-01816629416630310.1109/ACCESS.2020.30231509193890Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery StructureYuki Tsukui0Shin'ichi Arakawa1https://orcid.org/0000-0002-9376-977XShiori Takagi2Masayuki Murata3https://orcid.org/0000-0002-4168-2875Graduate School of Information Science and Technology, Osaka University, Osaka, JapanGraduate School of Information Science and Technology, Osaka University, Osaka, JapanGraduate School of Information Science and Technology, Osaka University, Osaka, JapanGraduate School of Information Science and Technology, Osaka University, Osaka, JapanNetwork Function Virtualization (NFV) is a system that provides application services by connecting virtual network functions (VNFs), and is expected to accommodate new service requests through the development of new VNF and connection with existing ones. Because VNFs are implemented by software, their design and placement are important problems for the NFV system, which reduce the current and future system costs. In this article, we investigate the design principles and the placement policies that reduce the cost of designing and developing VNFs for accommodating new service requests. As for the design policy, we introduce a Core/Periphery-Based Design (CPBD) that utilizes the core/periphery concept for developing VNFs. In CPBD, “core” VNFs are developed in advance and repeatedly used to accommodate future service requests. While “core” VNFs are common to current and future service requests, “periphery” VNFs are developed and customized for each service request. Next, we investigate the placement policies of VNFs for CPBD to fully utilize the nature of their core/periphery structure. In addition, we examine the Center-Located Core/Periphery placement (CLCP) policy and the Geographically-Distributed Core/Periphery placement (GDCP) policy, and evaluate the long-term cost of the NFV system under resource restrictions to run VNFs. Our results show that CPBD reduces the long-term cost of design and development of VNFs by 23% compared to the design with no core VNFs. Moreover, in the case of no resource restrictions, both CLCP and GDCP reduce the long-term costs of placing and connecting VNFs by 15% compared to the existing VNF placement algorithm. With resource constraints, GDCP reduces the long-term costs over CLCP by 11%.https://ieeexplore.ieee.org/document/9193890/Network function virtualization (NFV)virtual network function (VNF)VNF placementcore/periphery structuresoftware designmicroservice |
| spellingShingle | Yuki Tsukui Shin'ichi Arakawa Shiori Takagi Masayuki Murata Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure IEEE Access Network function virtualization (NFV) virtual network function (VNF) VNF placement core/periphery structure software design microservice |
| title | Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure |
| title_full | Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure |
| title_fullStr | Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure |
| title_full_unstemmed | Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure |
| title_short | Design and Placements of Virtualized Network Functions for Dynamically Changing Service Requests Based on a Core/Periphery Structure |
| title_sort | design and placements of virtualized network functions for dynamically changing service requests based on a core periphery structure |
| topic | Network function virtualization (NFV) virtual network function (VNF) VNF placement core/periphery structure software design microservice |
| url | https://ieeexplore.ieee.org/document/9193890/ |
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