Independent acknowledgement assembly and its extended mechanisms to enhance TCP performance in OBS networks

Author

Liu, Lei ; Hong, Xiaobin ; Wu, Jian ; Lin, Jintong

Author_Institution

Key Lab. of OCLT, Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

13

Issue

12

fYear

2009

fDate

12/1/2009 12:00:00 AM

Firstpage

986

Lastpage

988

Abstract

This letter investigates how to improve transmission control protocol (TCP) performance over optical burst switching (OBS) networks. Different from previous works, this letter focuses on TCP acknowledgement (ACK) packets. Considering the characteristics of ACK, an independent ACK assembly (IAA) scheme is presented, which assembles ACK into one specific data burst (DBACK) to avoid the disadvantages of the traditional assembly mechanism and improve TCP throughput. Based on IAA, three extended mechanisms, i.e., IAA with DBACK cloning (IAA-DC), IAA with DBACK retransmission (IAA-DR) and IAA with DBACK deflection routing (IAA-DDR) are proposed respectively. Simulation results show that these new mechanisms can further improve TCP throughput performance.

Keywords

optical burst switching; transport protocols; OBS networks; TCP performance; deflection routing; independent acknowledgement assembly; optical burst switching networks; transmission control protocol; Assembly; Cloning; Optical burst switching; Optical control; Performance analysis; Performance gain; Performance loss; Protocols; Routing; Throughput; TCP, OBS, throughput;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.12.090166

Filename

5353285