Modular redundancy for cloud based IMS robustness

Muhammad Taqi Raza, Changlong Li, Hsiao Yun Tseng, Songwu Lu

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

4 Scopus citations

Abstract

IMS (IP Multimedia Subsystem) is an emerging architectural framework that delivers a number of multimedia services - ranging from voice/video over LTE, interactive gaming and many more - in operational LTE network. Network operators are embracing cloud-based IMS to meet increasing multimedia traffic demand. They can easily and cost-efficiently implement multimedia applications while ensuring superior end-user experiences through always-on services and real-time engagement. In this paper, we reveal that cloud-based IMS cannot provide session-level resilience under faults and becomes the bottleneck to high service availability. The root cause lies upon the weak failure recovery mechanisms at both IMS protocol and cloud platform that terminate the on-going IMS control-plane procedure. To address this, we propose a design that provides fault-tolerance to IMS control-plane operations. Our design provides modular redundancy to perform real time failure recovery. As the system operates, the control-plane operations are logged at redundant IMS NFs modules. These logs are replayed from the failed operation to resume IMS working after failure. We build our system prototype of open source IMS over cloud platform. Our results show that we can achieve session-level resilience by performing fail-over procedure within tens of milliseconds under different combinations of IMS control-plane operations failures.

Original languageEnglish (US)
Title of host publicationMobiWac 2017 - Proceedings of the 15th ACM International Symposium on Mobility Management and Wireless Access, Co-located with MSWiM 2017
PublisherAssociation for Computing Machinery, Inc
Pages75-82
Number of pages8
ISBN (Electronic)9781450351638
DOIs
StatePublished - Nov 21 2017
Externally publishedYes
Event15th ACM International Symposium on Mobility Management and Wireless Access, MobiWac 2017 - Miami, United States
Duration: Nov 21 2017Nov 25 2017

Publication series

NameMobiWac 2017 - Proceedings of the 15th ACM International Symposium on Mobility Management and Wireless Access, Co-located with MSWiM 2017

Conference

Conference15th ACM International Symposium on Mobility Management and Wireless Access, MobiWac 2017
Country/TerritoryUnited States
CityMiami
Period11/21/1711/25/17

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Information Systems
  • Computer Networks and Communications

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