NDLI: Performance evaluation of DCCP: A focus on smoothness and TCP-friendliness

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Annales Des Télécommunications : Volume 60

Annales Des Télécommunications : Volume 59

Annales Des Télécommunications : Volume 58

Annales Des Télécommunications : Volume 57

Annales Des Télécommunications : Volume 56

Annales Des Télécommunications : Volume 55

Annales Des Télécommunications : Volume 54

Annales Des Télécommunications : Volume 53

Annales Des Télécommunications : Volume 52

Performance evaluation of DCCP: A focus on smoothness and TCP-friendliness

Content Provider	Springer Nature Link
Author	Gu, Xiaoyuan Di, Pengfei Wolf, Lars
Copyright Year	2006
Abstract	Recent years have seen dramatic increases of the use of multimedia applications on the Internet, which typically either lack congestion control or use proprietary congestion control mechanisms. This can easily cause congestion collapse or compatibility problems. Datagram Congestion Control Protocol (Dccp) fills the gap betweenUdp andTcp, featuring congestion control rather than reliability for packet-switched rich content delivery with high degree of flexibility. We present aDccp model designed and implemented withOpnet Modeler, and the experiments and evaluation focused on largely the smoothness of the data rates, and the fairness between concurrentDccp flows andTcp flows. We foundDccp-ccid3 demonstrates stable data rates under different scenarios, and the fairness betweenDccp andTcp is only achieved under certain conditions. We also validated that the throughput ofDccp-Ccid3 is proportional to the average packet size, and relatively fixed packet size is critical for the optimal operation ofDccp. Problems in the slow start phase and insufficient receiver buffer size were identified and we hereby proposed solutions on this.Le nombre d’applications multimédias sur l’internet a considérablement augmenté ces dernières années. Ces applications généralement ne gèrent pas les congestions ou bien utilisent des mécanismes de contrôle propriétaires. Il peut en résulter facilement des congestions graves ou des problèmes d’incompatibilité. Le protocoleDccp (Datagram Congestion Control Protocol) se positionne entreUdp etTcp puisqu ’il fournit, pour des paquets multimédias, un contrôle de congestion hautement flexible mais sans la fiabilité de délivrance. Cet article présente un modèleDccp conçu et implémenté avec le simulateurOpnet. Les expérimentations et les analyses portent principalement sur le lissage des débits et l’équité entre des fluxDccp etTcp concurrents. On montre queDccp-Ccid3 affiche des débits stables sous divers scénarios et que l’équité entreDccp etTcp n’est atteinte que sous certaines conditions. On valide également que le débit deDccp-Ccid3 est proportionnel à la taille moyenne des paquets et que le fait d’avoir des paquets de taille relativement constante est un facteur essentiel pour un fonctionnement optimal deDccp. Les problèmes pendant la phase de démarrage lent et ceux dus à une mémoire tampon insuffisante côté récepteur sont également analysés et résolus.
Starting Page	46
Ending Page	71
Page Count	26
File Format	PDF
ISSN	00034347
Journal	Annales Des Télécommunications
Volume Number	61
Issue Number	1-2
e-ISSN	19589395
Language	French
Publisher	Springer-Verlag
Publisher Date	2006-01-01
Publisher Place	Paris
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Protocole communication Internet Multimédia Maîtrise encombrement Tcp/Ip Transmission par paquet Modélisation Simulation Évaluation performance Communications Engineering, Networks Information Systems and Communication Service Signal, Image and Speech Processing Computer Communication Networks Information and Communication, Circuits R & D/Technology Policy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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