Reliable Multicast Control Scheme for Achieving TCP-Friendly in Heterogeneous Environment(Traffic Controling CDNs)(Special Issue on Content Delivery Networks)
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概要
- 論文の詳細を見る
Reliable multicast is an interesting application of distributing data, to lots of clients at the same time. In heterogeneous environment, it is necessary to adjust the transmitting rate corresponding to the bandwidth of receivers. Placed at a network bottleneck point, an active server can buffer the multicast packets and control the transmitting rate to the downstream multicast receivers independently so as to absorb bandwidth differences. If wireless and wired receivers coexist, the best position for the active server is at the edge of the wired and wireless links because the bandwidth of wireless receivers are lower than that of wired receivers. However, it is not enough that an active server only controls the transmitting rate in such environment because wireless receivers tend to lose packet by the wireless transmission error. This paper proposes a scheme in which the active server independently controls a reliable multicast, scheme that is robust against packet loss due to wireless transmission error. Simulation results show that rate-based reliable multicast congestion control is more appropriate than window-based control for wireless links. We also show that FEC applied only to the wireless link improves the throughput of wireless multicast receivers. Finally, we show that combining rate-based reliable multicast congestion control scheme with FEC only for the wireless link makes reliable multicast more practical and friendly with TCP even if packets are lost due to transmission errors.
- 社団法人電子情報通信学会の論文
- 2003-06-01
著者
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Atsumi Yukio
Multimedia Laboratories. Ntt Docomo Inc.:(present Address)school Of Business Administration Senshu U
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MORITANI Yuki
Network Laboratories, NTT DoCoMo Inc.
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Moritani Yuki
Network Laboratories Ntt Docomo Inc.