Avoiding TCP false retransmission in LEO satellite network using TTL information

Hiroshi Tsunoda, Kohei Ohta, Nei Kato, Yoshiaki Nemoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Recently, more research attention has been focused on LEO (Low Earth Orbit) satellite networks connected to ISL (Inter Satellite Link). If terrestrial and LEO satellite networks are seamlessly interconnected by TCP/IP protocols, a global network that covers the whole earth can be integrated into the Internet. However, handover and rerouting issues in LEO satellite networks cause delay variance, and the delay variance can degrade performance of TCP, originally designed for wired networks, because of unnecessary retransmission. In this paper, we propose a method for avoiding the unnecessary retransmission by using the TTL (Time To Live) field in IP headers. Our simulation results show how our mechanism is effectively avoiding unnecessary retransmissions.

Original languageEnglish
Pages (from-to)64-71
Number of pages8
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number1
Publication statusPublished - 2005 Jan


  • Handover
  • LEO satellite networks
  • Rerouting
  • TCP
  • TTL


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