A New Content-Oriented Traffic Engineering for Content Distribution: CAR (Content Aware Routing)
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- YAMASHITA Shigeyuki
- Faculty of Engineering Science, Kansai University
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- IMACHI Daiki
- Faculty of Engineering Science, Kansai University
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- YAMAMOTO Miki
- Faculty of Engineering Science, Kansai University
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- MIYAMURA Takashi
- NTT Network Service Systems Laboratories, NTT Corporation
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- KAMAMURA Shohei
- NTT Network Service Systems Laboratories, NTT Corporation
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- SASAYAMA Koji
- NTT Network Service Systems Laboratories, NTT Corporation
抄録
Large-scale content transfer, especially video transfer, is now a dominant traffic component in the Internet. Originally, content transfer had a content-oriented feature, i.e., “Users do not care where content is retrieved. Users only take care of what content they obtain.” Conventional traffic engineering (TE) aims to obtain optimal routes for traffic between ingress and egress router pairs, i.e., TE has focused on a location-oriented approach that takes care of where to connect. With increased demand for content-oriented features for content traffic, TE needs to focus on content-oriented routing design. In this study, we therefore propose a novel approach to content-oriented TE, called content aware routing (CAR). In CAR, routes are designed for content and egress router pairs, i.e., content traffic toward a receiver-side router. Content demand can be flexibly distributed to multiple servers (i.e., repositories) providing the same content, meaning that content can be obtained from anywhere. CAR solves the optimization problem of minimizing maximum link utilization. If there are multiple optimal solutions, CAR selects a solution in which resource usage is minimized. Using numerical examples formulated by the linear programming problem, we evaluated CAR by comparing it with combinations of conventional content delivery networks and TE, i.e., location-oriented designs. Our numerical results showed that CAR improved maximum link utilization by up to 15%, with only a 5% increase of network resource usage.
収録刊行物
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E98.B (4), 575-584, 2015
一般社団法人 電子情報通信学会
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詳細情報 詳細情報について
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- CRID
- 1390282679351472896
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- NII論文ID
- 130005061814
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- ISSN
- 17451345
- 09168516
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可