Efficient rekeying algorithms for WiMAX networks

Jeremy Brown, Xiaojiang Du, Mohsen Guizani

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this paper, we study the rekeying issue in IEEE 802.16e WiMAX networks. The existing rekeying scheme-the Multicast and Broadcast Rekeying Algorithm (MBRA) unicasts new keys to each subscriber station (SS). This scheme does not scale well since it incurs large communication overheads when the number of SSs increase. In our work, first we propose a general tree-based rekeying scheme, which is more efficient than the MBRA. We also formulate an optimization problem to determine the optimal tree structure for given number of SSs. Furthermore, we present a novel and efficient rekeying scheme for WiMAX networks. Our new rekeying scheme utilizes efficient security schemes and the WiMAX network application feature. Both analysis and performance evaluation show that our rekeying scheme can significantly reduce the communication overheads.

Original languageEnglish
Pages (from-to)392-400
Number of pages9
JournalSecurity and Communication Networks
Volume2
Issue number5
DOIs
StatePublished - 2009

Keywords

  • IEEE 802.16e
  • Key management
  • Security
  • WiMAX

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