Improving handover and drop-off performance on high-speed trains with multi-RAT

Yi-Bing Lin*, Shun Neng Yang, Chien Ting Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Scopus citations


Provisioning commercial mobile telecommunications service on a high-speed train (HST) faces several challenges. In particular, when an HST quickly passes through the radio coverage of the base stations, frequent handovers may result in serious communication interruption. Methods such as the hierarchical two-hop network and the seamless dual-link handover scheme were proposed to address these challenges. This paper proposes the multiple radio access technology (multi-RAT) to resolve the HST handover issue, which allows the HST to simultaneously connect to two or more heterogeneous mobile networks (e.g., the Universal Mobile Telecommunications System and Long Term Evolution). With this approach, the handover process can be improved by keeping multiple heterogeneous network links of the HST at the same time and maintaining the connection through one link during the handover process of the other link. We show that multi-RAT can effectively enhance HST communications by reducing the impact of handover failure. This approach can work together with other solutions such as the dual-link scheme to further enhance the performance of the HST communications.

Original languageEnglish
Article number6815696
Pages (from-to)2720-2725
Number of pages6
JournalIEEE Transactions on Intelligent Transportation Systems
Issue number6
StatePublished - 1 Dec 2014


  • Handover
  • hierarchical two-hop (HTH) network
  • high-speed train (HST)
  • multiple radio access technology (multi-RAT)

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