Authors: F.J. Knaesel, M.A.R. Dantas
Addresses: Department of Informatics and Statistics (INE), University of Santa Catarina (UFSC), 88040–900 – Florianopolis, Brazil. ' Department of Informatics and Statistics (INE), University of Santa Catarina (UFSC), 88040–900 – Florianopolis, Brazil
Abstract: In mobile wireless environments, Personal Digital Assistants (PDAs) may cache data to work, even when the mobile client is far from the structured network. However, the same cached data may be shared by two or more users and this can be done in an ad hoc wireless network. In this case, it is necessary to always have the most updated data. To solve this problem, we developed software that shares data between the server and mobile devices using a timestamp protocol to always have the most updated data. The experimental environment has one server in a structured network and two mobile clients getting and sending data between the client and the server (when it is covered by the structured wireless network) and between the mobile clients (when a structured wireless network is absent) using an ad hoc network. In this paper, we describe the experimental environment and detail what and how we have done this software.
Keywords: mobile databases; mobile computing; wireless networks; ad hoc networks; consistency; data sharing; mobile communications; mobile networks.
International Journal of Networking and Virtual Organisations, 2009 Vol.6 No.3, pp.259 - 269
Available online: 12 Mar 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article