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Computers 2016, 5(4), 30; doi:10.3390/computers5040030

Store-Carry and Forward-Type M2M Communication Protocol Enabling Guide Robots to Work together and the Method of Identifying Malfunctioning Robots Using the Byzantine Algorithm

Information Systems Science Major, Graduate School of Engineering, Soka University, 1-236 Tangi-cho, Hachioji-shi 192-8577, Japan
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Academic Editor: Yevgeniya Kovalchuk
Received: 25 August 2016 / Revised: 14 November 2016 / Accepted: 21 November 2016 / Published: 28 November 2016
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Abstract

This paper concerns a service in which multiple guide robots in an area display arrows to guide individual users to their destinations. It proposes a method of identifying malfunctioning robots and robots that give wrong directions to users. In this method, users’ mobile terminals and robots form a store-carry and forward-type M2M communication network, and a distributed cooperative protocol is used to enable robots to share information and identify malfunctioning robots using the Byzantine algorithm. The robots do not directly communicate with each other, but through users’ mobile terminals. We have introduced the concept of the quasi-synchronous number, so whether a certain robot is malfunctioning can be determined even when items of information held by all of the robots are not synchronized. Using simulation, we have evaluated the proposed method in terms of the rate of identifying malfunctioning robots, the rate of reaching the destination and the average length of time to reach the destination. View Full-Text
Keywords: M2M communication; store-carry and forward; guide robot; Byzantine algorithm; identification of malfunctioning robots; quasi-synchronous number M2M communication; store-carry and forward; guide robot; Byzantine algorithm; identification of malfunctioning robots; quasi-synchronous number
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Suga, Y.; Takami, K. Store-Carry and Forward-Type M2M Communication Protocol Enabling Guide Robots to Work together and the Method of Identifying Malfunctioning Robots Using the Byzantine Algorithm. Computers 2016, 5, 30.

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