G. Tsuchida

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In mobile ad hoc networks, changes in topology caused by the movement of hosts and changes in radio link connectivity make it difficult for mobile hosts to maintain access to data on other hosts. To solve such a problem, replica distribution methods which distribute replicas of data items to other mobile hosts and maintain them have been proposed; we have(More)
In this paper we propose Road-aware Skip Copy (RSC) method for distributing replicas of location-dependent data on server-less vehicular ad hoc networks in urban areas. In the RSC method, mobile nodes broadcast replicas of data item near intersections in order to distribute replicas to many nodes with small number of broadcasts, and it limits the number of(More)
In mobile ad hoc networks, due to the movement of nodes and changes of radio link status, it is difficult to maintain connections between the nodes. To improve availability of data items owned by nodes on such networks, it is useful to place replicas of data items to multiple nodes. We have proposed a scheme for sharing location dependent information using(More)
We propose link-aware and density based replica arrangement (LDR) method for dynamical arrangement of replicas of location dependent data that addresses the difficulties encountered by mobile hosts in ad hoc networks when trying to access data on other hosts due to the movement of hosts, obstacles, etc. In this LDR method, replicas of location dependent(More)
In this paper we propose an efficient geocasting scheme based on flooding for cases where a source node sends request messages to nodes in the destination area and receives replies from some of them, Geocasting based on Successful Transmission Records (GSTR). Generally geocast protocols based on flooding generate many redundant messages which generate(More)
In mobile ad hoc networks, due to the movement of hosts, obstacles, etc, it is difficult for mobile hosts to access the data on other hosts. To solve this problem, replica distribution methods which distribute the replicas of data items to other hosts and maintain them have been proposed. We have proposed LDR (Link-aware and Density-based Rearrangement)(More)
In mobile ad hoc networks, due to the movement of hosts, etc, it is difficult for mobile hosts to access the data on other hosts. As solution methods of such a problem, replica distribution methods which distribute the replicas of data items to other hosts and maintain them have been proposed, and we have proposed and evaluated Skip Copy (SC) method and(More)
In mobile ad hoc networks, due to the movement of hosts, etc, it is difficult for mobile hosts to access the data on other hosts. As solution methods of such a problem, replica distribution methods which distribute the replicas of data items to other hosts and maintain them have been proposed, and we have proposed Skip Copy (SC) method as one for location(More)