Broadcast approach for UMTS mobility database recovery

Sok Ian Sou*, Yi-Bing Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The Universed Mobile Telecommunications System (UMTS) provides high bandwidth packet data services to mobile users. To support mobility management, an MM context is established for every mobile station in its corresponding Serving GPRS Support Node (SGSN). When the SGSN fails, all MM contexts in the SGSN are corrupted. These MM contexte must be recovered or data delivery to the mobile stations will fail. This paper describes a broadcast approach that allows the MS to detect lost MM context in SGSN and therefore speeds up the process for SGSN recovery. We propose an analytic model to evaluate the performance of the broadcast approach. The analytic model is validated against simulation experiments. Based on our study, the network operator can select the appropriate parameter values in the broadcast approach for various traffic conditions.

Original languageEnglish
Pages (from-to)865-871
Number of pages7
JournalIEEE Transactions on Mobile Computing
Issue number8
StatePublished - 1 Aug 2007


  • Broadcast
  • Mobility Management (MM) context
  • Serving GPRS Support Node (SGSN)
  • Universal Mobile Telecommunications System (UMTS)

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