caa a22 4500 445870826 CHVBK 20180317145511.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s11107-011-0329-8 doi (NATIONALLICENCE)springer-10.1007/s11107-011-0329-8 TCP over optical burst-switched networks with controlled burst retransmission [Elektronische Daten] [Qiong Zhang, Neal Charbonneau, Vinod Vokkarane, Jason Jue] For optical burst-switched (OBS) networks in which TCP is implemented at a higher layer, the loss of bursts can lead to serious degradation of TCP performance. Due to the bufferless nature of OBS, random burst losses may occur, even at low traffic loads. Consequently, these random burst losses may be mistakenly interpreted by the TCP layer as congestion in the network. The TCP sender will then trigger congestion control mechanisms, thereby reducing TCP throughput unnecessarily. In this paper, we introduce a controlled retransmission scheme in which the bursts lost due to contention in the OBS network are retransmitted at the OBS layer. The OBS retransmission scheme can reduce the burst loss probability in the OBS core network. Also, the OBS retransmission scheme can reduce the probability that the TCP layer falsely detects congestion, thereby improving the TCP throughput. We develop an analytical model for evaluating the burst loss probability in an OBS network that uses a retransmission scheme, and we also analyze TCP throughput when the OBS layer implements burst retransmission. We develop a simulation model to validate the analytical results. Simulation and analytical results show that an OBS layer with controlled burst retransmission provides up to two to three orders of magnitude improvement in TCP throughput over an OBS layer without burst retransmission. This significant improvement is primarily because the TCP layer triggers fewer time-outs when the OBS retransmission scheme is used. Springer Science+Business Media, LLC, 2011 DWDM nationallicence OBS nationallicence Retransmission nationallicence TCP nationallicence Zhang Qiong Fujitsu Labs of America Inc., Richardson, TX, USA aut Charbonneau Neal Department of Computer and Information Science, University of Massachusetts, Dartmouth, MA, USA aut Vokkarane Vinod Department of Computer and Information Science, University of Massachusetts, Dartmouth, MA, USA aut Jue Jason Department of Computer Science, University of Texas at Dallas, Richardson, TX, USA aut Photonic Network Communications Springer US; http://www.springer-ny.com 22/3(2011-12-01), 299-312 1387-974X 22:3<299 2011 22 11107 https://doi.org/10.1007/s11107-011-0329-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-011-0329-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Qiong Fujitsu Labs of America Inc., Richardson, TX, USA aut NATIONALLICENCE 700 1- Charbonneau Neal Department of Computer and Information Science, University of Massachusetts, Dartmouth, MA, USA aut NATIONALLICENCE 700 1- Vokkarane Vinod Department of Computer and Information Science, University of Massachusetts, Dartmouth, MA, USA aut NATIONALLICENCE 700 1- Jue Jason Department of Computer Science, University of Texas at Dallas, Richardson, TX, USA aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 22/3(2011-12-01), 299-312 1387-974X 22:3<299 2011 22 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer