Improving optical burst switching networks (OBS) performance by adjusting maximum burst size and burstification time

Improving optical burst switching networks (OBS) performance by adjusting maximum burst size and burstification time

Reza PoorzareAli Poorzare Siamak Abedidarabad 

Young Researchers Club, Ardabil Branch, Islamic Azad University, Ardabil 561575675, Iran

Ardabil Branch, Islamic Azad University, Ardabil 561575675, Iran

Corresponding Author Email: 
rezapoorzare@gmail.com
Page: 
1-6
|
DOI: 
https://doi.org/10.18280/rces.050101
Received: 
23 January 2018
|
Accepted: 
19 March 2018
|
Published: 
31 March 2018
| Citation

OPEN ACCESS

Abstract: 

Because Optical Burst Switching (OBN) networks don’t have buffers it leads to problems like burst lost and burst contention when arriving at the destination. These problems downgrade OBS networks performances. When traffic of the network is not heavy burst contention can happen, but when it happens the network thinks the traffic is heavy and it decreases the rate of sending bursts when it’s not necessary. Another important factor in our paper is Packet Delivery Ratio (PDR). Packet loss can happen in two ways in the network: one is because of heavy load and the other one is because of burst contention. In this paper we adjust the burst size and burst creation time to improve the performance of the OBS network. We simulate our algorithm in NS-2 then compare it with another scheme.

Keywords: 

burst size, burstification time, optical burst switching, Transport Control Protocol (TCP)

1. Introduction
2. TCP Vegas
3. Obtaining Best Maximum Burst Size and Burstification Time
4. Comparing Our Scheme with Another Method
5. Conclusion
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