Robust and efficient stream delivery for application layer multicasting in heterogeneous networks

Document Type

Article

Publication Date

1-1-2009

Abstract

Application layer multicast (ALM) is highly expected to replace IP multicasting as the new technological choice for content delivery. Depending on the streaming application, ALM nodes will construct a multicast tree and deliver the stream through this tree. However, if a node resides in the tree leaves, it cannot deliver the stream to its descendant nodes. In this case, quality of service (QoS) will be compromised dramatically. 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 descriptions, and then uses arrangement graph (AG) to construct node-disjoint multicast trees for each description. However, using a constant AG size in THAG creates difficulty in delivering descriptions appropriately across a heterogeneous network. In this paper, we propose a method, referred to as network-aware hierarchical arrangement graph (NHAG), to change the AG size dynamically to enhance THAG performance, even in heterogeneous networks. Finally, we evaluate the proposed scheme by experiments using the network simulator ns-2. By comparing our proposed method to THAG and SplitStream, we show that our method provides better performance in terms of throughput and QoS. The results indicate that our approach is more reliable than other methods in heterogeneous networks. © 1999-2012 IEEE.

Identifier

70450193234 (Scopus)

Publication Title

IEEE Transactions on Multimedia

External Full Text Location

https://doi.org/10.1109/TMM.2008.2008933

ISSN

15209210

First Page

166

Last Page

176

Issue

1

Volume

11

Grant

0726549

Fund Ref

Japan Science and Technology Agency

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