Reliable Multicast Transport Protocol (RMTP)

Reliable Multicast Transport Protocol (RMTP)

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by Sanjoy Paul , Krishan K. Sabnani , John C. Lin , Supratik Bhattacharyya

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Datum	Value	Source
TITLE	Reliable Multicast Transport Protocol (RMTP)	user correction
AUTHOR NAME	Sanjoy Paul	user correction
AUTHOR AFFIL	Bell Laboratories	user correction
AUTHOR ADDR	Holmdel, NJ 07733	user correction
AUTHOR NAME	Krishan K. Sabnani	user correction
AUTHOR AFFIL	Bell Laboratories	user correction
AUTHOR ADDR	Holmdel, NJ 07733	user correction
AUTHOR NAME	John C. Lin	user correction
AUTHOR AFFIL	Department of Computer Sciences; Purdue University	user correction
AUTHOR ADDR	West Lafayette, IN 47907	user correction
AUTHOR NAME	Supratik Bhattacharyya	user correction
AUTHOR AFFIL	Department of Computer Science; University of Massachusetts	user correction
AUTHOR ADDR	Amherst, MA 01003	user correction
ABSTRACT	This paper presents the design, implementation and performance of a reliable multicast transport protocol called RMTP. RMTP is based on a hierarchical structure in which receivers are grouped into local regions or domains and in each domain there is a special receiver called a Designated Receiver (DR) which is responsible for sending acknowledgments periodically to the sender, for processing acknowledgements from receivers in its domain and for retransmitting lost packets to the corresponding receivers. Since lost packets are recovered by local retransmissions as opposed to retransmissions from the original sender, end-to-end latency is significantly reduced, and the overall throughput is improved as well. Also, since only the DRs send their acknowledgments to the sender, instead of all receivers sending their acknowledgments to the sender, a single acknowledgement is generated per local region, and this prevents acknowledgement implosion. Receivers in RMTP send their acknowledgments to the DRs periodically, thereby simplifying error recovery. In addition, lost packets are recovered by selective repeat retransmissions, leading to improved throughput at the cost of minimal additional buffering at the receivers. This paper also describes the implementation of RMTP and its performance on the Internet.	SVM HeaderParse 0.2
CITATIONS	44 found	ParsCit 1.0