Improvement of burst transmission delay using offset time for burst assembly in optical burt switching

被引:7
作者
Mikoshi, Taiju [1 ]
Takenaka, Toyofumi [1 ]
机构
[1] Nihon Univ, Grad Sch Engn, Fukushima 9638642, Japan
来源
2008 7TH ASIA-PACIFIC SYMPOSIUM ON INFORMATION AND TELECOMMUNICATION TECHNOLOGIES | 2008年
关键词
optical burst switching; OBS; burst assembly; offset time; delay;
D O I
10.1109/APSITT.2008.4653532
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We propose a novel algorithm for reducing burst transmission delay and packet loss rate. In optical burst switching (OBS), a certain offset time and burst assembly period are needed, leading to transmission delay. In order to reduce the delay, the proposed method transmits a control packet before the burst assembly period expires. Due to this mechanism, a method is needed to estimate burst length. To estimate burst length, the proposed method adopts the Jacobson/Karels algorithm used in TCP. Moreover, to reduce the estimation error, the proposed method uses a head-dropping algorithm for the burst collision procedure. We evaluate packet delay, packet loss rate and estimation error rate by simulation experiments. The simulation results show that the proposed method has a lower packet loss rate and delay than the conventional method and burst estimation error can be neglected.
引用
收藏
页码:13 / +
页数:2
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