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Enabling transparent caching in LTE mobile backhaul networks with SDN
KTH, School of Electrical Engineering (EES).ORCID iD: 0000-0002-4876-0223
2016 (English)In: Proceedings - IEEE INFOCOM, Institute of Electrical and Electronics Engineers (IEEE), 2016, 724-729 p.Conference paper (Refereed)
Abstract [en]

Today's mobile network architecture lacks the flexibility to efficiently handle the fast increasing amount of data traffic. SDN could potentially provide the required flexibility in future mobile architectures, however its introduction into the existing architecture is challenging. In this paper we propose a solution to improve the mobile backhaul's flexibility based on SDN, compatible with the current architecture, focusing on the transparent in-network caching's use case. We explore the design space in terms of function placement, and propose a scalable solution for in-network caching based on stateless DPI and stateful connection tracking. We implemented a prototype of the proposed solution to evaluate its impact on MPEG DASH streaming performance. Our experimental results show that the delay introduced by our module is less than 5ms for 99% of the packets, which is negligible in today's LTE networks, and the slight negative impact on streaming rate selection is easily outweighed by the increased flexibility.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016. 724-729 p.
Keyword [en]
Motion Picture Experts Group standards, Network architecture, Data traffic, Design spaces, Existing architectures, Increased flexibility, Mobile architecture, Mobile backhaul networks, Mobile backhauls, Scalable solution, Wireless telecommunication systems
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-194866DOI: 10.1109/INFCOMW.2016.7562172ISI: 000389210700136ScopusID: 2-s2.0-84988811215ISBN: 9781467399555OAI: diva2:1054913
35th IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2016, 10 April 2016 through 14 April 2016

QC 20161209

Available from: 2016-12-09 Created: 2016-11-01 Last updated: 2017-01-23Bibliographically approved

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Dán, György
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