Paper Abstract and Keywords |
Presentation |
2009-11-12 09:30
A method of constructing QoS overlay network and its evaluation Ryoichi Kawahara, Satoshi Kamei, Noriaki Kamiyama, Haruhisa Hasegawa, Hideaki Yoshino (NTT Corp.), Eng Keong Lua (Carnegie Mellon Univ.), Akihiro Nakao (The University of Tokyo) CQ2009-41 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
It is known that there exist Triangle Inequality Violations (TIVs) with respect to network Quality of Service (QoS)
metrics such as latency between nodes in the Internet. This motivates the exploitation of QoS-aware routing overlays. To
find an optimal overlay route, we would usually need to examine all the possible overlay routes. However, this requires both
measuring QoS between all node pairs and investigating all the routes in the full-mesh overlay topology, which poses scalability
problem in terms of both measurement cost and route calculation and dissemination cost. We thus propose a method of
constructing a QoS overlay network that enables us to find a near optimal route in a cost-effective manner. Our idea is based
on the finding that a small number of overlay nodes can provide the optimal routes for a large number of node pairs, which
is obtained through measurement data analysis between PlanetLab nodes. Our overlay network has two layers where the upper-
layer consists of such small number of overlay nodes that can provide the optimal routes while the lower-layer consists of
the other overlay nodes. By allocating such overlay nodes at the upper-layer, we can provide better QoS routes for each node
pair with high probability. We construct the overlay network topology where the upper-layer overlay nodes are connected in
full-mesh manner while the lower-layer overlay nodes are not connected in full-mesh but only to upper-layer nodes. Through
this structure, we can reduce measurement and route calculation costs. Using PlanetLab data, we show that our method can
achieve almost the same performance as the optimal solution. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
overlay network / QoS / routing / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 274, CQ2009-41, pp. 15-20, Nov. 2009. |
Paper # |
CQ2009-41 |
Date of Issue |
2009-11-05 (CQ) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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CQ2009-41 |
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