Controller-switch assignment in 5G networks

Ehsan Tohidi, Saeedeh Parsaeefard, Mohammad Ali Maddah-Ali, Babak Hossein Khalaj, Alberto Leon-Garcia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Explosive growth in both quantity and quality of services and the development trends in 5G networks indicates that multiple distributed software defined network (SDN) controllers are of increasing importance from both network performance and reliability perspectives. Although SDN was first considered with a logically centralized controller approach, due to delay, reliability, and scalability challenges, moving towards multiple distributed controllers is inevitable. In the distributed controlling scheme, an assignment that associates a controller to each switch is required. Moreover, the number of required SDN controllers and even their locations have to be determined. In this paper, two controller-switch assignment algorithms for static and dynamic scenarios are proposed. The proposed algorithms have the advantage of fast implementation. It is shown by simulations that the proposed assignments outperform recent algorithms in terms of the number of active controllers.

Original languageEnglish (US)
Title of host publicationIEEE 5G World Forum, 5GWF 2019 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781728136271
StatePublished - Sep 2019
Externally publishedYes
Event2nd IEEE 5G World Forum, 5GWF 2019 - Dresden, Germany
Duration: Sep 30 2019Oct 2 2019

Publication series

NameIEEE 5G World Forum, 5GWF 2019 - Conference Proceedings


Conference2nd IEEE 5G World Forum, 5GWF 2019

Bibliographical note

Publisher Copyright:
© 2019 IEEE.


  • 5G Networks
  • Controller-Switch Assignment
  • SDN


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