Restoration scheme of mobility databases by mobility learning and prediction in PCS networks

Joon Min Gil, Chan Yeol Park, Chong Sun Hwang, Doo Soon Park, Jin Gon Shon, Young Sik Jeong

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

This paper proposes a restoration scheme based on mobility learning and prediction in the presence of the failure of mobility databases in personal communication systems (PCSs). In PCSs, mobility databases must maintain the current location information of users to provide a fast connection for them. However, the malfunction of mobility databases may cause some location information to be lost. As a result, without an explicit restoration procedure, incoming calls to users may be rejected. Therefore, an explicit restoration scheme against the malfunction of mobility databases is needed to guarantee continuous service availability to users. Introducing mobility learning and prediction into the restoration process allows systems to locate users after a failure of mobility databases. In failure-free operations, the movement patterns of users are learned by a Neuro-Fuzzy Inference System (NFIS). After a failure, an inference process of the NFIS is initiated and the users' future location is predicted. This is used to locate lost users after a failure. This proposal differs from previous approaches using a checkpoint because it does not need a backup process nor additional storage space to store checkpoint information. In addition, simulations show that our proposal can reduce the cost needed to restore the location records of lost users after a failure when compared to the checkpointing scheme.

Original languageEnglish
Pages (from-to)1962-1973
Number of pages12
JournalIEEE Journal on Selected Areas in Communications
Volume19
Issue number10
DOIs
StatePublished - Oct 2001

Keywords

  • Mobility database failure restoration
  • Mobility learning and prediction
  • Personal communication systems

Fingerprint

Dive into the research topics of 'Restoration scheme of mobility databases by mobility learning and prediction in PCS networks'. Together they form a unique fingerprint.

Cite this