Strategies towards robust and stable application layer multicast

Tetsuya Kusumoto*, Su Zhou, Jiro Katto, Sakae Okubo

*この研究の対応する著者

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

The purpose of this study is to construct a robust and stable overlay tree of ALM (Application Layer Multicast) for real-time video transmission. Firstly, we propose a proactive route maintenance which enables fast recovery of the overlay tree against node departures and failures. By forcing free node degrees for route backup, signaling overheads for route maintenance can be reduced in a scalable manner. Secondly, we improve performance of the proposed method by introducing layered video coding. Smooth layer management instead of coarse degree management contributes to reduction of the depth of overlay tree (i.e. delay) as well as to efficient bandwidth utilization. Thirdly, we introduce session records of each node into the overlay tree construction. Long-term history of user access records is expected to bring more robust overlay trees. Finally, we carried out extensive evaluation experiments. Simulations and implementations demonstrate that our methods lead to fast recovery of the overlay tree against node departures and reduction of the signaling overheads. Furthermore, introduction of layered video coding is proved to be efficient to reduce delays, to improve bandwidth utilization and to avoid severe degradation of picture quality. Final experiments show that incorporation of node stability reduces the number of nodes affected by parent node departures by promoting adequate nodes to upper layer of the ALM tree.

本文言語English
ホスト出版物のタイトルPACKET VIDEO 2007 - 16th International Packet Video Workshop
出版社IEEE Computer Society
ページ253-262
ページ数10
ISBN(印刷版)1424409810, 9781424409815
DOI
出版ステータスPublished - 2007
イベントPACKET VIDEO 2007 - 16th International Packet Video Workshop - Lausanne, Switzerland
継続期間: 2007 11 122007 11 13

出版物シリーズ

名前PACKET VIDEO 2007 - 16th International Packet Video Workshop

Conference

ConferencePACKET VIDEO 2007 - 16th International Packet Video Workshop
国/地域Switzerland
CityLausanne
Period07/11/1207/11/13

ASJC Scopus subject areas

  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • コンピュータ ビジョンおよびパターン認識
  • コンピュータ ネットワークおよび通信

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