Reducing location update cost in a PCS network

Yi-Bing Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

285 Scopus citations


Location tracking operations in a personal communications services (PCS's) network are expensive. Several strategies have been proposed to reduce the location update cost. This paper studies a special case of a location tracking algorithm called the alternative location algorithm. This special case is referred to as the two location algorithm (TLA). An analytical model is proposed to compare the performance of TLA and the IS-41 protocol. Our study indicates that the performance of TLA is significantly affected by the user moving patterns and the call traffic. If the user mobility is higher than the call frequency or the user tends to move back to the previously visited registration areas, then TLA may significantly outperform IS-41. We also observe that the variance of the portable residence times in registration areas has impact on the performance of TLA (i.e., better performance is expected for larger variance).

Original languageEnglish
Pages (from-to)25-33
Number of pages9
JournalIEEE/ACM Transactions on Networking
Issue number1
StatePublished - 1 Dec 1997


  • Home location register
  • Mobility management
  • Personal communications services
  • Roaming management
  • Visitor location register

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