A Reliable Multicast Mechanism for Location Dependent Data in DSRC-Based ITS Networks(Special Issue on Information System Technologies for ITS)
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概要
- 論文の詳細を見る
A number of mobile hosts might be densely staying in an area caused by traffic congestions. The greater part of the mobile hosts will require commonly useful data, such as traffic information, parking information and other driving related information in such environment. Simultaneous data transmission broadcasts using a common link are regarded as a suitable means to distribute this location-dependent information. However, there is no guarantee that mobile hosts can finish receiving the information completely within a limited time. In this paper, we propose a data retransmission method for communications between a base station and mobile hosts and a data recovery processing method for use between base stations. The data retransmission method called "TOA" (The Order of Arrival) schedules retransmission data specified in the first NACK request received after retransmission processing. We have proposed "Advanced" Join system in which a base station makes consolidated join requests to a multicast group on behalf of mobile hosts. Applying the TOA method to resending in the Advanced Join system, datareceiving efficiency is higher than with the simple Advanced Join system and the absolute number of completed mobile host data reception is higher. Using the TOA method, even with the base station disposition rate of 50% the number of completed reception is higher than with the Advanced Join system at 80%. The proposed reliable multicasting system to the DSRC-based ITS network can realize an efficient base station arrangement in the ITS network infrastructure and contribute to the deployment of a superior ITS.
- 社団法人電子情報通信学会の論文
- 2002-11-01
著者
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WATANABE TAKASHI
The First Department of Surgery, Nagoya University School of Medicine
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Mizuno T
The Faculty Of Information Shizuoka Univ.
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Mizuno Tadanori
the Faculty of Engineering, Shizuoka University
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MUNAKA Tatsuji
Yokosuka ITS Research Center, Telecommunications Advancement Organization of Japan
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YAMAMOTO Tatsushi
the Graduate School of Information, Shizuoka Univ.
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KURODA Masahiro
Information Technology R & D Center, Mitsubishi Electric Corp.
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Munaka Tatsuji
Mitsubishi Electric Corporation
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Yamamoto Tatsushi
The Graduate School Of Information Shizuoka Univ.
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Kuroda Masahiro
Information Technology R & D Center Mitsubishi Electric Corp.
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Watanabe Takashi
The Faculty Of Information Shizuoka University
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