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Publish/Subscribe system is an asynchronous and multi-point communication system, which decouples communication space from communication time and control flow completely. It adapts well to highly dynamic network environments and data-centric networks. This paper presents an Opportunistic Networks based Message Publish/Subscribe Scheme (ONMPSS), which can calculate the number of subscription requests...
In mobile phones, it is useful to know the most probable next location to make decisions about future actions. In this letter we compare three LZ based prediction algorithms. The originality of our work is that we make it in a cellular network, we separate the algorithms into two independent phases (tree updating and probability calculation), we have included Active LeZi in the study, and we evaluate...
Internet users consume a large volume of rich media, and the consumption is increasing dramatically with the pervasiveness of network. BitTorrent has been well accepted as a solution to large-scale content distribution without requiring major infrastructure investment. However, it has not taken into account the link optimization across networks, causing heavy traffic across networks. This limitation...
Effective link-layer trigger mechanism can significantly influence the handover performance and determine whether the handover completes successfully. The predictive handover framework that employs the required handover time and predicted signal power level to generate link trigger was proposed. Because this scheme doesn't consider the moving condition of the mobile terminal (MT), it would increase...
The resource limitation of mobile devices causes the problem that the existing image processing software based on the centralized computing mode had difficulty running in mobile devices. A solution is given in the paper by adopting Web service-based image processing method. For one thing, image processing tasks were distributed to service providers' service registry and service requesters. For another,...
Real time mobile collaboration systems allow two or more geographically separated users to work on a shared document at the same time. There has been a large amount of work on consistency management for real-time collaboration in replicated architectures, however, the algorithms depend on fixed membership, and are not suited to ad-hoc mobile networks. This paper builds on the previous work of the...
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