Service Function Chaining in 5G & Beyond Networks : Challenges and Open Research Issues

Hajar Hantouti*, Nabil Benamar, Tarik Taleb

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review


Service Function Chaining (SFC) is a trending paradigm, which has helped to introduce unseen flexibility in telecom networks. Network service providers, as well as big network infrastructure providers, are competing to offer personalized services for their customers. Hence, added value services require the invocation of various elementary functions called Service Functions (SFs). The SFC concept composes and imposes the order in which SFs are invoked for a particular service. Emerging technologies such as Software Defined Networking and Network Function Virtualization support the dynamic creation and management of SFC. Even though SFC is an active technical area where several aspects were already standardized and many SFC architecture flavors are currently deployed, yet some challenges and open issues are still to be solved. In this paper, we present different research problems related to SFC and investigate several key challenges that should be addressed to realize more reliable SFC operations.

Original languageEnglish
Pages (from-to)320-327
Number of pages8
Issue number4
Publication statusPublished - 2020
MoE publication typeA1 Journal article-refereed


  • Computer architecture
  • Network function virtualization
  • Software defined networking
  • Hardware
  • Programming
  • Quality of service
  • Resource management

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