Virtualization as an environment of realization of network functions
Abstract
As telecommunication technologies are evolving very rapidly, there is a need to optimize the allocation of network and energy resources for information and telecommunications equipment. A promising way to solve this problem is the use of virtualization technology, which ensures the smooth operation of service devices and their high energy efficiency at different loads. There are studies that demonstrate solutions for new generation mobile and cloud computing that focus on the implementation of specific network structure and the application of a virtualization environment. However, issues related to high-performance information and telecommunication equipment, depending on the virtualization environment, remain open. The analysis of the use of virtualization technology in the environment of the 5th generation mobile network is carried out and the basic principles of virtualized network operation are determined. The article proposes the implementation of segments of the mobile network as virtualized ones, which will ensure its flexibility and productivity. The technology of virtualization of network functions provides the speed and reliable operation of telecommunication networks due to the operation of the network function as a separate virtual machine. This allows to provide high-speed deployment of the function in seconds or minutes, ensure the performance of data centers, increase information security and reduce CAPEX and OPEX. Virtualization allows to rationally allocate physical resources of servers for certain network functions and provides centralized control and management of the network. The main protocol that provides centralized network maintenance is the OpenFlow protocol. It has the ability to make changes to the network load and with less resource costs to send data to the end user on the optimal route. Virtualization technology of network functions is becoming a widespread technology in computer networks. Data centers have high protection against the effects of external threats, mobile networks increase network performance through flexible load balancing and increase the energy efficiency of the equipment. In other cases, control over network traffic is provided, the load is distributed to network segments and network fault tolerance is increased
Keywords
hypervisor; technologies of network functions virtualization; software-defined networks
References
[1] A. Basta, W. Kellerer, M. Hoffmann, H. J. Morper, and K. Hoffmann, "Applying NFV and SDN to LTE mobile core gateways, the functions placement problem", in Proc. 4th Workshop on All Things Cellular: Operations, Applications, & Challenges, Association for Computing Machinery, New York, NY, USA, 2014, pp. 33-38.
[2] J. G. Herrera, and J. F. Botero, "Resource allocation in NFV: A comprehensive survey", IEEE Transactions on Network and Service Management, vol. 13, no. 3, pp. 518532, Sept. 2016.
[3] B. Addis, D. Belabed, M. Bouet, and S. Secci, "Virtual network functions placement and routing optimization", 2015 IEEE 4th Int. Conf. on Cloud Networking, 2015, pp. 171-177.
[4] L. Globa, M. Skulysh, and S. Sulima, "Method for resource allocation of virtualized network functions in hybrid environment", 2016 IEEE Int. Black Sea Conf. on Communications and Networking, 2016, pp. 1-5.
[5] Open Networking Foundation, "The SDN Solutions Showcase", Jan. 2016. [Online]. Available: http://opennetworking.wpengine. com/. Accessed on: Jan. 18, 2021.
[6] Open Networking Foundation, "The OpenFlow Switch Specification". [Online]. Available: https://opennetworking.org/. Accessed on: Jan. 18, 2021
[7]Cisco, "Software-Defined Networking". [Online]. Available: https://www.cisco.com/c/ en/us/solutions/software-defined-networking/ overview.html
[8] Hewlett Packard, "Software Defined Networking". Available: https://techlibrary.hpe.com/ ie/ en/networking/solutions/technology/sdn/ Accessed on: Feb. 20, 2021.
[9] European Telecommunications Standards Institute, "Network Functions Virtualisation – White Paper on NFV priorities for 5G", 2017. [Online]. Available: https://portal.etsi.org/NFV/NFV_White_Paper _5G.pdf. Accessed on: Feb, 21, 2021
[10] M. Abu-Lebdeh, D. Naboulsi, R. Glitho, and C. W. Tchouati, "NFV orchestrator placement for geo-distributed systems", 2017 16th IEEE Int. Symposium on Network Computing and Applications, 2017, pp. 1-5.
[11] European Telecommunications Standards Institute, "Network Functions Virtualization (NFV); Architectural Framework", Dec. 2014. [Online]. Available: http://www.etsi.org. Accessed on: Feb, 10, 2021
[12] 5G Forum, "5G Vision, Requirements, and Enabling Technologies", Republic of Korea, 2016.
[13] J. Ordonez-Lucena, P. Ameigeiras, D. Lopez, J. J. Ramos-Munoz, J. Lorca, and J. Folgueira, "Network slicing for 5G with SDN/NFV: Concepts, architectures, and challenges", IEEE Communications Magazine, vol. 55, no. 5, pp. 80-87, May 2017.
[14] Ericsson Mobility Report, Telefonaktiebolaget LM Ericsson 1994-2021. [Online]. Available: https://www.ericsson.com/en/ mobility-report. Accessed on: Jan, 20, 2021.
[15] 3rd Generation Partnership Project, "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Release 15 Description; Summary of Rel-15 Work Items (Release 15)", 3GPP Technical Report 21.915 (2019-09) [Online]. Available: https://portal.3gpp.org/. Accessed on: Mar. 23, 2021