DocumentCode :
2500423
Title :
NHAG: Network-Aware Hierarchical Arrangement Graph for Application Layer Multicast in Heterogeneous Networks
Author :
Kobayasi, M. ; Nakayama, Hidehisa ; Ansari, Nirwan ; Kato, Nei
Author_Institution :
Tohoku Univ., Tohoku
fYear :
2007
fDate :
26-30 Nov. 2007
Firstpage :
1993
Lastpage :
1997
Abstract :
Application Layer Multicast (ALM) is highly expected to be the new technological choice contents delivery in lieu of IP multicast. Depending on each node´s streaming application, ALM constructs multicast trees and delivers the stream through those trees. The problem of ALM is that when a node resides in tree leaves, the stream cannot be delivered to descendant nodes. To overcome this problem, Topology-aware Hierarchical Arrangement Graph (THAG) was proposed. By employing Multiple Description Coding (MDC), THAG first splits the stream into a number of sub-streams, and then uses Arrangement Graph (AG) to construct an independent tree for each sub-stream. However, using the same size of AG in THAG has a difficulty delivering a stream appropriately across a heterogeneous network. In this paper, we propose a method to change the size of AG dynamically in enhancing THAG performance well even in a heterogeneous network. Finally, we evaluate the proposed scheme by experiments in ns -2. By comparing with THAG, we show that our proposal scheme provides a better performance in throughput and Bandwidth Satisfaction Rate (BSR).
Keywords :
IP networks; multicast communication; trees (mathematics); IP multicast; application layer multicast; heterogeneous networks; multicast trees; multiple description coding; network-aware hierarchical arrangement graph; topology-aware hierarchical arrangement graph; Bandwidth; Degradation; Electronic mail; Internet; Laboratories; Multicast communication; Proposals; Relays; Tree graphs; Unicast;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
Type :
conf
DOI :
10.1109/GLOCOM.2007.382
Filename :
4411292
Link To Document :
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