4,585 research outputs found
Integrated Support for Handoff Management and Context-Awareness in Heterogeneous Wireless Networks
The overwhelming success of mobile devices and wireless
communications is stressing the need for the development of
mobility-aware services. Device mobility requires services
adapting their behavior to sudden context changes and being
aware of handoffs, which introduce unpredictable delays and
intermittent discontinuities. Heterogeneity of wireless
technologies (Wi-Fi, Bluetooth, 3G) complicates the situation,
since a different treatment of context-awareness and handoffs is
required for each solution. This paper presents a middleware
architecture designed to ease mobility-aware service
development. The architecture hides technology-specific
mechanisms and offers a set of facilities for context awareness
and handoff management. The architecture prototype works with
Bluetooth and Wi-Fi, which today represent two of the most
widespread wireless technologies. In addition, the paper discusses
motivations and design details in the challenging context of
mobile multimedia streaming applications
Synchronous Relaying Of Sensor Data
In this paper we have put forth a novel methodology to relay data obtained by
inbuilt sensors of smart phones in real time to remote database followed by
fetching of this data . Smart phones are becoming very common and they are
laced with a number of sensors that can not only be used in native applications
but can also be sent to external nodes to be used by third parties for
application and service development
TCPSnitch: Dissecting the Usage of the Socket API
Networked applications interact with the TCP/IP stack through the socket API.
Over the years, various extensions have been added to this popular API. In this
paper, we propose and implement the TCPSnitch software that tracks the
interactions between Linux and Android applications and the TCP/IP stack. We
collect a dataset containing the interactions produced by more than 120
different applications. Our analysis reveals that applications use a variety of
API calls. On Android, many applications use various socket options even if the
Java API does not expose them directly. TCPSnitch and the associated dataset
are publicly available.Comment: See https://www.tcpsnitch.or
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