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Proceedings Paper

Algorithm of offset time in IP-over-WDM optical network
Author(s): Jian Liu; QingJi Zeng; Jianxin Wang; Jun Huang
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Paper Abstract

Optical Burst Switching combines the advantages of circuit switching and package switching, and it can improve the efficiency of system resource with high speed transmission and Qos. Now the rationale of OBS has been discussed a lot, and many schemes have been given. While there are still some key problems need to be resolved, such as in the model of IP over WDM, how to assemble the IP packages into burst that will be transmitted in the optical networks; and how to set the offset time between payload and its control package. In this paper, we provide a part randomized offset-time method to calculate the offset time upon the basis of: the network condition of the optical path that the payload will pass, the shaping scheme which is introduced to reduce the drop probability. At the same time, although there are many factors should be considered when setting the offset time, too sophisticated algorithm will be discarded. Because our ultimate end is to get equilibrium between the control complexity and bandwidth efficiency even some redundancy will be introduced in this method. We also consider a balance between end-to-end delay and blocking probability introduced by the new offset-time determination algorithm. At last, we will analyze the improvement in the network performance if the offset time has been set properly, especially when associated with delayed reservation technology.

Paper Details

Date Published: 3 September 2002
PDF: 6 pages
Proc. SPIE 4907, Optical Switching and Optical Interconnection II, (3 September 2002); doi: 10.1117/12.482283
Show Author Affiliations
Jian Liu, Shanghai Jiaotong Univ. (China)
QingJi Zeng, Shanghai Jiaotong Univ. (China)
Jianxin Wang, Shanghai Jiaotong Univ. (China)
Jun Huang, Shanghai Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4907:
Optical Switching and Optical Interconnection II
Lih-Yuan Lin; Yimo Zhang; Kimio Oguchi, Editor(s)

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