High-Assurance Video Conference System over the Internet
Summary :
In video conference systems over the Internet, audio and video data are often lost due to UDP packet losses, resulting in degradation of assurance. In this paper we describe a high-assurance video conference system applying the following two techniques: (1) packet loss recovery using convolutional codes, which improves the assurance of communication; and (2) Xcast, a multicast scheme that is designed for relatively small groups, reducing the bandwidth required for a multi-point conference. We added these functions to a GateKeeper (GK), a device used in conventional conference systems. Encoding/decoding and Xcast routing were then implemented as the upper layer for the UDP. We examined the functions of the system over the Internet in a multi-point conference between three sites around Tokyo, as well as a conference between Tokyo and Korea. We also investigated the effectiveness of the proposed system in experiments using an Internet simulator. Experimental results showed that the quality of received picture was improved in comparison with the case where no encoding schemes were applied.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E86-B No.10 pp.2940-2947
- Publication Date
- 2003/10/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (IEICE/IEEE Joint Special Issue on Assurance Systems and Networks)
- Category
- Network Systems and Applications
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Keyword
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Masayuki ARAI, Hitoshi KUROSU, Mamoru OHARA, Ryo SUZUKI, Satoshi FUKUMOTO, Kazuhiko IWASAKI, "High-Assurance Video Conference System over the Internet" in IEICE TRANSACTIONS on Communications,
vol. E86-B, no. 10, pp. 2940-2947, October 2003, doi: .
Abstract: In video conference systems over the Internet, audio and video data are often lost due to UDP packet losses, resulting in degradation of assurance. In this paper we describe a high-assurance video conference system applying the following two techniques: (1) packet loss recovery using convolutional codes, which improves the assurance of communication; and (2) Xcast, a multicast scheme that is designed for relatively small groups, reducing the bandwidth required for a multi-point conference. We added these functions to a GateKeeper (GK), a device used in conventional conference systems. Encoding/decoding and Xcast routing were then implemented as the upper layer for the UDP. We examined the functions of the system over the Internet in a multi-point conference between three sites around Tokyo, as well as a conference between Tokyo and Korea. We also investigated the effectiveness of the proposed system in experiments using an Internet simulator. Experimental results showed that the quality of received picture was improved in comparison with the case where no encoding schemes were applied.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e86-b_10_2940/_p
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@ARTICLE{e86-b_10_2940,
author={Masayuki ARAI, Hitoshi KUROSU, Mamoru OHARA, Ryo SUZUKI, Satoshi FUKUMOTO, Kazuhiko IWASAKI, },
journal={IEICE TRANSACTIONS on Communications},
title={High-Assurance Video Conference System over the Internet},
year={2003},
volume={E86-B},
number={10},
pages={2940-2947},
abstract={In video conference systems over the Internet, audio and video data are often lost due to UDP packet losses, resulting in degradation of assurance. In this paper we describe a high-assurance video conference system applying the following two techniques: (1) packet loss recovery using convolutional codes, which improves the assurance of communication; and (2) Xcast, a multicast scheme that is designed for relatively small groups, reducing the bandwidth required for a multi-point conference. We added these functions to a GateKeeper (GK), a device used in conventional conference systems. Encoding/decoding and Xcast routing were then implemented as the upper layer for the UDP. We examined the functions of the system over the Internet in a multi-point conference between three sites around Tokyo, as well as a conference between Tokyo and Korea. We also investigated the effectiveness of the proposed system in experiments using an Internet simulator. Experimental results showed that the quality of received picture was improved in comparison with the case where no encoding schemes were applied.},
keywords={},
doi={},
ISSN={},
month={October},}
Copy
TY - JOUR
TI - High-Assurance Video Conference System over the Internet
T2 - IEICE TRANSACTIONS on Communications
SP - 2940
EP - 2947
AU - Masayuki ARAI
AU - Hitoshi KUROSU
AU - Mamoru OHARA
AU - Ryo SUZUKI
AU - Satoshi FUKUMOTO
AU - Kazuhiko IWASAKI
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2003
AB - In video conference systems over the Internet, audio and video data are often lost due to UDP packet losses, resulting in degradation of assurance. In this paper we describe a high-assurance video conference system applying the following two techniques: (1) packet loss recovery using convolutional codes, which improves the assurance of communication; and (2) Xcast, a multicast scheme that is designed for relatively small groups, reducing the bandwidth required for a multi-point conference. We added these functions to a GateKeeper (GK), a device used in conventional conference systems. Encoding/decoding and Xcast routing were then implemented as the upper layer for the UDP. We examined the functions of the system over the Internet in a multi-point conference between three sites around Tokyo, as well as a conference between Tokyo and Korea. We also investigated the effectiveness of the proposed system in experiments using an Internet simulator. Experimental results showed that the quality of received picture was improved in comparison with the case where no encoding schemes were applied.
ER -
English
