アダプティブFECとELNの組み合わせによるワイヤレスセルラーネットワーク上のTCPの性能向上に関する検討 Improving TCP Performance for Wireless Cellular Networks by Adaptive FEC Combined with Explicit Loss Notification

    • 三好 昌弘 MIYOSHI Masahiro
    • 大阪大学基礎工学研究科情報数理系専攻 Department of Infomatics and Mathematical Science, Graduate School of Engineering Science, Osaka University
    • 村田 正幸 MURATA Masayuki
    • 大阪大学基礎工学研究科情報数理系専攻 Department of Infomatics and Mathematical Science, Graduate School of Engineering Science, Osaka University

Abstract

ワイヤレスセルラーネットワークにおいて、アダプティブFECとELN(Explicit Loss Notification)を組み合わせたTCPの性能向上手法を提案した。本提案手法は、伝送誤りをELNを用いて検出し、その誤り率に応じて適切にFECのコードを切換えるものである。ギルバートモデルを用いた無線通信路シミュレーションにより本提案手法が従来のTCP性能向上事法(Snoopプロトコル、ELN、Fixed FEC)に比べて、有効であることを検証した。

We propose a new adaptive FEC scheme combined with ELN (Explicit Loss Notification) that was proposed for improving TCP performance in wireless cellular networks. In our method, transmission errors on the wireless link are measured at the packet level and the error status is notified the TCP sender with ELN. According to this information, an appropriate FEC code is determined in order to maximize the TCP performance. We first compare the TCP performance using Snoop Protocol, ELN and the fixed FEC, through which we find the appropriate FEC code against given BER (bit error ratio). We then show how the adaptive FEC can be realized using our solution, and also examine the appropriate observation period of measuring BER enough for the fading speed on the noisy wireless link. We finally demonstrate that our method can achieve better performance than the conventional fixed FEC by using the Gilbert model as a wireless error model.

Journal

Technical report of IEICE. CQ   [List of Volumes]

Technical report of IEICE. CQ 102(24), 39-44, 2002-04-12  [Table of Contents]

The Institute of Electronics, Information and Communication Engineers

References:  11

You must have a user ID to see the references.If you already have a user ID, please click "Login" to access the info.New users can click "Sign Up" to register for an user ID.

Preview

Preview

Codes

  • NII Article ID (NAID) :
    110004023695
  • NII NACSIS-CAT ID (NCID) :
    AN1054106X
  • Text Lang :
    ENG
  • Article Type :
    ART
  • ISSN :
    09135685
  • NDL Article ID :
    6162520
  • NDL Source Classification :
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No. :
    Z16-940
  • Databases :
    CJP  NDL  NII-ELS 

Share