2024-03-29T23:55:08Zhttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_oaipmhoai:ipsj.ixsq.nii.ac.jp:000956052017-03-31T05:36:57Z05471:06674:07291
Highly Efficient Transport Protocol for Large Capacity Data Files and its detailsHighly Efficient Transport Protocol for Large Capacity Data Files and its detailseng[Special Issue on Theory and Application of Intelligent Information Technology] network protocol, multicast, XCAST, large-capacity data filehttp://id.nii.ac.jp/1001/00095583/Articlehttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_action_common_download&item_id=95605&item_no=1&attribute_id=1&file_no=1Copyright (c) 2012 by the Information Processing Society of JapanToyo University/Presently with Faculty of Information Sciences and artsToyo University/Presently with Faculty of Information Sciences and artsThe University of Electro-Communications/Presently with Center for Industrial and Governmental RelationsToyo University/Presently with Faculty of Information Sciences and artsToyo University/Presently with Faculty of Information Sciences and artsTomoo, SumidaYasunori, ShionoTakaaki, GotoKatsuyoshi, ItoKensei, TsuchidaWe describe a protocol named Non-ordered Block Transfer on Explicit Multi-Unicast (NBT on XCAST). The purpose of this protocol is to save network bandwidth and to reduce server load in delivering large-capacity stored files. In general, files are transfered on a unicast basis. However, the unicast wastes bandwidth by sending the same large-capacity files when responding to each client's requests. In addition, server load increases. To solve this problem, Non-ordered Block Transfer (NBT) has been proposed as an efficient transfer system for large-capacity stored files using asynchronous transfer mode (ATM) multicast. However, NBT with ATM has not been implemented and has a limited area of use. In this paper, to solve this problem we propose an NBT protocol using XCAST (NBT on XCAST), which is proposed as a multicast scheme. XCAST can be implemented in a pure IP network without limitation of the data link layer protocol. Our proposed system is especially effective when the server frequently transfers large-capacity stored files. We discuss bandwidth consumption efficiency, a retransmission scheme, and experimental results of a partial performance using NBT on XCAST.We describe a protocol named Non-ordered Block Transfer on Explicit Multi-Unicast (NBT on XCAST). The purpose of this protocol is to save network bandwidth and to reduce server load in delivering large-capacity stored files. In general, files are transfered on a unicast basis. However, the unicast wastes bandwidth by sending the same large-capacity files when responding to each client's requests. In addition, server load increases. To solve this problem, Non-ordered Block Transfer (NBT) has been proposed as an efficient transfer system for large-capacity stored files using asynchronous transfer mode (ATM) multicast. However, NBT with ATM has not been implemented and has a limited area of use. In this paper, to solve this problem we propose an NBT protocol using XCAST (NBT on XCAST), which is proposed as a multicast scheme. XCAST can be implemented in a pure IP network without limitation of the data link layer protocol. Our proposed system is especially effective when the server frequently transfers large-capacity stored files. We discuss bandwidth consumption efficiency, a retransmission scheme, and experimental results of a partial performance using NBT on XCAST.AA00700121Journal of information processing2035996062012-07-151882-66522013-10-21