On the Handover Security Key Update and Residence Management in LTE Networks

Quoc-Tuan Vien, Tuan Anh Le, Xin-She Yang, Trung Q. Duong

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

3 Citations (Scopus)


In LTE networks, key update and residence management have been investigated as an effective solution to cope with desynchronization attacks in mobility management entity (MME) handovers. In this paper, we first analyse the impacts of the key update interval (KUI) and MME residence interval (MRI) on the handover performance in terms of the number of exposed packets (NEP) and signaling overhead rate (SOR). By deriving the bounds of the NEP and SOR over the KUI and MRI, it is shown that there exists a tradeoff between the NEP and the SOR, while our aim is to minimise both of them simultaneously. This accordingly motivates us to propose a multiobjective optimisation problem to find the optimal KUI and MRI that minimise both the NEP and SOR. By introducing a relative importance factor between the SOR and NEP along with their derived bounds, we further transform the proposed optimisation problem into a singleobjective optimisation problem which can be solved via a simple numerical method. In particular, the results show that a higher accuracy of up to 1 second is achieved with the proposed approach while requiring a lower complexity compared to the conventional approach employing iterative searches
Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference (WCNC 2017): Proceedings
Place of PublicationSan Francisco, CA, USA
Publisher IEEE
Number of pages6
Publication statusPublished - 11 May 2017

Publication series

NameIEEE Wireless Communications and Networking Conference (WCNC): Proceeedings
ISSN (Electronic)1558-2612

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