Performance evaluation of TCP/IP over time-division multiplexing Ethernet

Kana Otawara, Masaaki Yamamoto, Takahiro Yakoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


S-TDMA is a concept to realize coexistence of RT (real-time) and non-RT traffic over switched Ethernet by separating them in a time-slot basis. Theoretically, coexistence is achieved even in multi-hop network if precise time synchronization among the all nodes on its communication path. However, since it is technically difficult, the construction of wide-area S-TDMA network was not yet achieved. This paper implemented S-TDMA switch on NetFPGA-1G-CML board with 1 Gbps Ethernet PHY, newly adding a few nanoseconds-level time synchronization and change-mode mechanism to the previously presented implementation. Remarkably, this implementation enabled to examine the degree of throughput deterioration of non-RT with change-mode in one S-TDMA switch. Previous works regarding S-TDMA switch have never researched this issue. From the result of 1 ms period, TCP throughput was 14:65 Mbps when non-RT time-slot occupies 90% of each period. It was the worst value and only 4% of the result when non-RT time-slot occupies 100%. Such value is considered not practical if S-TDMA network is constructed in the real Internet infrastructure. Thus, further approaches to enhance TCP performance are discussed.

Original languageEnglish
Title of host publicationProceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9781509034741
Publication statusPublished - 2016 Dec 21
Event42nd Conference of the Industrial Electronics Society, IECON 2016 - Florence, Italy
Duration: 2016 Oct 242016 Oct 27

Publication series

NameIECON Proceedings (Industrial Electronics Conference)


Other42nd Conference of the Industrial Electronics Society, IECON 2016

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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