COMMUNICATION METHOD FOR DATA SHARING SYSTEM, DATA SHARING SYSTEM, AND COMMUNICATION NODE

Title:

COMMUNICATION METHOD FOR DATA SHARING SYSTEM, DATA SHARING SYSTEM, AND COMMUNICATION NODE

Document Type and Number:

WIPO Patent Application WO/2015/079620

Kind Code:

A1

Abstract:

A communication method for a data sharing system which is constituted by a plurality of communication nodes, and through which data transmitted from a transmission source node are propagated by having the respective communication nodes repeatedly transmit the data, includes: a transmission step in which a first communication node transmits a transmission stop message including a hash value of data in relation to which repeated transmission is to be stopped; a reception step in which a second communication node receives the transmission stop message; and a stopping step in which the second communication node stops transmission of data having an identical hash value to the hash value included in the transmission stop message. The hash value is preferably encrypted using a public key cryptosystem. A transmission source node of the transmission stop message may be a transmission source node or a destination node of the data to be stopped, or another node.

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Inventors:

ONISHI RYOKICHI (JP)
WATANABE TOSHIHIKO (JP)

Application Number:

PCT/JP2014/005415

Publication Date:

June 04, 2015

Filing Date:

October 27, 2014

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)

International Classes:

H04W48/18

Foreign References:

US20120233326A1	2012-09-13
EP2498552A1	2012-09-12
US20110069606A1	2011-03-24
JP2008305371A	2008-12-18
JP2006184953A	2006-07-13

Other References:

YI QIAN ET AL: "Performance evaluation of a secure MAC protocol for vehicular networks", MILITARY COMMUNICATIONS CONFERENCE, 2008. MILCOM 2008. IEEE, IEEE, PISCATAWAY, NJ, USA, 16 November 2008 (2008-11-16), pages 1 - 6, XP031407987, ISBN: 978-1-4244-2676-8
AMIN VAHDAT; DAVID BECKER: "Epidemic Routing for Partially-Connected Ad-Hoc,Networks", TECHNICAL REPORT CS-200006, 2000

Attorney, Agent or Firm:

KAWAGUCHI, Yoshiyuki et al. (4-10 Higashi Nihonbashi 3-chome, Chuo-k, Tokyo 04, JP)

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