Hybrid application support for mobile information systems

The wide-spread presence of wireless networks and the availability of mobile devices has enabled the development of mobile applications that take us a step closer to accomplishing Weiser’s vision of ubiquitous computing (Weiser, 1991). Unfortunately however, network connectivity is still not given anywhere and at any time. To increase the benefit of mobile applications, the next logical step is to provide support for an offline modethat allows to continuously work with an application, even when the device is not connected to a network. In this paper typical problems of replicating data are explained, possible solutions are discussed and two architectural patterns that could be used to implement hybrid support are illustrated

Towards Service Continuity for Generic Mobile Services

This paper discusses models of generic mobile services. The goal is to gain understanding of the challenges in designing, developing and deploying advanced mobile data services. First, a composition model describing the components of a generic mobile service and the components relationships is given

Towards Service Continuity for Generic Mobile Services”. The

Abstract. This paper discusses models of generic mobile services. The goal is to gain understanding of the challenges in designing, developing and deploying advanced mobile data services. First, a composition model describing the components of a generic mobile service and the components relationships is given. Second, distribution models describing the distributions of the components in the former model across hosts, networks and domains are presented. After presenting these generic models, a brief mobility analysis is carried out, followed by a discussion of mobility and service continuity dependency on the service distribution. The functions necessary to provide service continuity are identified and incorporated in a service continuity layer