QoS Evaluation of a Multimedia Interactive Satellite Communications System

Manabu NAKAGAWA; Yoichi HASHIMOTO; Noriyuki IKEUCHI

QoS Evaluation of a Multimedia Interactive Satellite Communications System

Manabu NAKAGAWA, Yoichi HASHIMOTO, Noriyuki IKEUCHI

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QoS of a multimedia interactive satellite communications system, which uses a satellite circuit for downlinks and a terrestrial network for uplinks, has been measured and evaluated under inferior satellite circuit conditions. Our attention in this paper is focused on TCP throughput as the most significant QoS, and experiments and analysis on TCP throughput were performed. The measured results are in good agreement with theoretical values calculated by taking congestion avoidance algorithms of TCP into consideration. As a result, we were able to verify that the TCP throughput declines radically when the low signal quality of a satellite circuit causes packet retransmission to occur. In this case, congestion avoidance works to reduce network congestion. The congestion avoidance increases the value of a retransmission timer and decreases the window size even if the network is not congested. Assuming that throughput deterioration is caused by rain fade, the total time when the throughput declines is less than 4 hours a year in Tokyo, and the results show the system can be put to practical use.

Publication: IEICE TRANSACTIONS on Communications Vol.E81-B No.11 pp.2034-2040

Publication Date: 1998/11/25

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Type of Manuscript: Special Section PAPER (Special Issue on Performance and Quality of Service (QoS) of Multimedia Networks)

Category: Satellite and Wireless Networks

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Manabu NAKAGAWA, Yoichi HASHIMOTO, Noriyuki IKEUCHI, "QoS Evaluation of a Multimedia Interactive Satellite Communications System" in IEICE TRANSACTIONS on Communications, vol. E81-B, no. 11, pp. 2034-2040, November 1998, doi: .
Abstract: QoS of a multimedia interactive satellite communications system, which uses a satellite circuit for downlinks and a terrestrial network for uplinks, has been measured and evaluated under inferior satellite circuit conditions. Our attention in this paper is focused on TCP throughput as the most significant QoS, and experiments and analysis on TCP throughput were performed. The measured results are in good agreement with theoretical values calculated by taking congestion avoidance algorithms of TCP into consideration. As a result, we were able to verify that the TCP throughput declines radically when the low signal quality of a satellite circuit causes packet retransmission to occur. In this case, congestion avoidance works to reduce network congestion. The congestion avoidance increases the value of a retransmission timer and decreases the window size even if the network is not congested. Assuming that throughput deterioration is caused by rain fade, the total time when the throughput declines is less than 4 hours a year in Tokyo, and the results show the system can be put to practical use.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e81-b_11_2034/_p

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@ARTICLE{e81-b_11_2034,
author={Manabu NAKAGAWA, Yoichi HASHIMOTO, Noriyuki IKEUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={QoS Evaluation of a Multimedia Interactive Satellite Communications System},
year={1998},
volume={E81-B},
number={11},
pages={2034-2040},
abstract={QoS of a multimedia interactive satellite communications system, which uses a satellite circuit for downlinks and a terrestrial network for uplinks, has been measured and evaluated under inferior satellite circuit conditions. Our attention in this paper is focused on TCP throughput as the most significant QoS, and experiments and analysis on TCP throughput were performed. The measured results are in good agreement with theoretical values calculated by taking congestion avoidance algorithms of TCP into consideration. As a result, we were able to verify that the TCP throughput declines radically when the low signal quality of a satellite circuit causes packet retransmission to occur. In this case, congestion avoidance works to reduce network congestion. The congestion avoidance increases the value of a retransmission timer and decreases the window size even if the network is not congested. Assuming that throughput deterioration is caused by rain fade, the total time when the throughput declines is less than 4 hours a year in Tokyo, and the results show the system can be put to practical use.},
keywords={},
doi={},
ISSN={},
month={November},}

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TY - JOUR
TI - QoS Evaluation of a Multimedia Interactive Satellite Communications System
T2 - IEICE TRANSACTIONS on Communications
SP - 2034
EP - 2040
AU - Manabu NAKAGAWA
AU - Yoichi HASHIMOTO
AU - Noriyuki IKEUCHI
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E81-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 1998
AB - QoS of a multimedia interactive satellite communications system, which uses a satellite circuit for downlinks and a terrestrial network for uplinks, has been measured and evaluated under inferior satellite circuit conditions. Our attention in this paper is focused on TCP throughput as the most significant QoS, and experiments and analysis on TCP throughput were performed. The measured results are in good agreement with theoretical values calculated by taking congestion avoidance algorithms of TCP into consideration. As a result, we were able to verify that the TCP throughput declines radically when the low signal quality of a satellite circuit causes packet retransmission to occur. In this case, congestion avoidance works to reduce network congestion. The congestion avoidance increases the value of a retransmission timer and decreases the window size even if the network is not congested. Assuming that throughput deterioration is caused by rain fade, the total time when the throughput declines is less than 4 hours a year in Tokyo, and the results show the system can be put to practical use.
ER -