Open AccessConfiguration of ACK Trees for Multicast Transport Protocols
Author(s) -
Koh Seok Joo,
Kim Eunsook,
Park Juyoung,
Kang Shin Gak,
Park Ki Shik,
Park Chee Hang
Publication year - 2001
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.01.0101.0303
Subject(s) - multicast , computer science , reliable multicast , materials science , computer network , distributed computing , protocol independent multicast
For scalable multicast transport, one of the promising approaches is to employ a control tree known as acknowledgement (ACK) tree which can be used to convey information on reliability and session status from receivers to a root sender. The existing tree configuration has focused on a ‘bottom‐up’ scheme in which ACK trees grow from leaf receivers toward a root sender. This paper proposes an alternative ‘top‐down’ configuration where an ACK tree begins at the root sender and gradually expands by including non‐tree nodes into the tree in a stepwise manner. The proposed scheme is simple and practical to implement along with multicast transport protocols. It is also employed as a tree configuration in the Enhanced Communications Transport Protocol, which has been standardized in the ITU‐T and ISO/IEC JTC1. From experimental simulations, we see that the top‐down scheme provides advantages over the existing bottom‐up one in terms of the number of control messages required for tree configuration and the number of tree levels.