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Mobile devices need not always be connected to a server. The device hoards required data in its local memory so that it can access the data even when it is not connected with the network. To preserve the consistency among data stored at the client end and the server end, some synchronization technique has to be applied.
As mobile devices have become more powerful and ubiquitous in our daily life, sharing content objects among mobile platforms has become increasingly popular. Without the help of server infrastructures, clients usually form a mobile peer-to-peer (P2P) system as an ad-hoc network, and discover content objects by flooding query to neighboring peers. Such a flooding-based query method consumes communication...
For the purpose of cooperation between a user's mobile device and a public device, we propose ad-hoc pairing, which dynamically generates a pair of a mobile device and a public device. The proposed method has the feature to generate the pair required by a user steadily with few errors and few retries. We measure the period required for pairing procedure via the implemented system to evaluate the efficiency...
This paper presents an efficient sharing protocol (iShare) that blends different wireless interfaces of the mobile device for content dissemination service. With iShare, mobile users download content from a source via the cellular link and at the same time form an ad hoc mesh network for peer-to-peer exchange of content data. The mesh remains robust to network dynamics, minimizes ad hoc communication...
In this paper we introduce mechanisms for automated mapping of urban areas that provide a virtual sensor abstraction to the applications. We envision a participatory system that exploits widely available devices as mobile phones to cooperatively read environmental conditions as air quality or noise pollution, and map these measurements to stationary virtual sensors. We propose spatial and temporal...
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