Push-to-talk service for intelligent transportation systems

Chai Hien Gan*, Yi-Bing Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Push to talk (PTT) is a walkie-talkie like service. In this service, several predefined group members participate in one PTT session. At any time, only one group member is allowed to speak. Therefore, a mechanism is required to determine the member that is permitted to speak. In Open Mobile Alliance (OMA), a central arbitrator coordinates the permission to speak among the group members. In the Intelligent Transportation System (ITS) environment, the centralized OMA approach is not appropriate. This paper proposes a distributed PTT mechanism for the ITS environment, which does not require any central arbitrator. The group member permitted to speak is automatically determined through distributed learning interaction. We also explore the properties and model the performance of the proposed PTT mechanism.

Original languageEnglish
Pages (from-to)391-399
Number of pages9
JournalIEEE Transactions on Intelligent Transportation Systems
Issue number3
StatePublished - 1 Sep 2007


  • Intelligent transportation systems (ITS)
  • Push-to-talk (PTT) client
  • Real-time transport protocol (RTP)

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