QoS-aware and reliable traffic steering for service function chaining in mobile networks

Ruozhou Yu, Guoliang Xue, Xiang Zhang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The ever-increasing mobile traffic has inspired deployment of capacity and performance enhancing network services within mobile networks. Owing to recent advances in network function virtualization, such network services can be flexibly and cost-efficiently deployed in the mobile network as software components, avoiding the need for costly hardware deployment. Nevertheless, this complicates network planning by bringing the need for service function chaining. In this paper, we study mobile network planning through a software-defined approach, considering both quality-of-service and reliability of different classes of traffic. We define and formulate the traffic steering problem for service function chaining in mobile networks, which turns out to be NP-hard. We then develop a fast approximation scheme for the problem, and evaluate its performance via extensive simulation experiments. The results show that our algorithm is near-optimal, and achieves much better performance compared with baseline algorithms.

Original languageEnglish (US)
Article number8058433
Pages (from-to)2522-2531
Number of pages10
JournalIEEE Journal on Selected Areas in Communications
Issue number11
StatePublished - Nov 2017


  • Mobile networks
  • Quality-of-service
  • Reliability
  • Service function chaining
  • Software-defined networking

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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