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Cloud storage usages are becoming increasingly popular on mobile devices. Through an extensive motivation study, we find that cloud storage accesses from mobile apps suffer from several notable problems that undermine usage experiences. The root cause is that the way of cloud storage providers deploying their services onto mobile devices relies on app developers for the correct and appropriate implementations...
In this paper, we studied for the synchronization of CCNx that is one of the Content Centric Network (CCN) projects by using Hazelcast. CCN is considered as a way to solve the explosive growth of Internet traffic. Hazelcast is an open source In-Memory Data Grid. Hazelcast, that one of the consensus-based in-memory data grid, has the strength to speed, high-availability, and secure. To effectively...
Nowadays, mobile applications/devices have become the trends, especially, when they were gradually shifted from basic communication services to supporting more sophisticated service provisioning. Mobile applications are usually very light, are nowadays likely to be often connected to the Internet, and can be used quite easily. However, these applications exhibit some challenges related to limited...
Highly distributed, autonomous and self-powered systems operating in harsh, outdoors environments face several threats in terms of dependability, timeliness and security, due to the challenging operating conditions determined by the environment. Despite such difficulties, there is an increasing demand to deploy these systems to support critical services, thus calling for severe timeliness, safety,...
We propose a new clock duty control for the mobile display interface. This is designed by using the relation between the data and the strobe signals. The proposed scheme has an output duty error less than 5% for 20% skew and has under 20ps jitter from 500MHz to 1GHz operation.
The birth of remarkable advance in the development of computer and hardware in computer world has enables us to access information anytime and anywhere regardless of the geography factor. Therefore, replication in distributed system environment has become increasingly popular due to its high degree of availability, fault tolerance and enhance the performance of a system. Read-One-Write-All Monitoring...
This paper analyzes the reasons of asynchronous between audio and video image for current 3G video phones. A solution for improving the synchronization between audio and video data is proposed. The solution proposed in this work mainly consists of software components, according to which hardware needs to be selected. It also gives the video phone terminal structure, block diagram for H.324M video...
The specifications of the protocols supporting mobility - MIPv6, NEMO - centralize their key functionalities on the home agent, which represents a single point of failure. In the context of the French research project REMORA, we have developed a solution to make home agent-based mobility protocols more reliable against the home agent failures. This paper presents the design, the implementation and...
Wireless distributed network is a distributed system based on wireless communication technology to achieve resource share and cooperation. With the gradual consummation of wireless communication network, wireless distributed network has played a more and more important role in distributed testing and controlling field. SMS is a simple text transfer protocol on GSM network. It has been widely used...
Sensor networks are now enabling the monitoring of various environmental phenomena with more accuracy than the previous labour intensive and less technological solutions. This paper is concerned with the application of opportunistic networking techniques to wildlife monitoring, where the sensors are attached to animals moving in their habitat. We present seal-2-seal, a novel protocol for logging of...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
This correspondence describes an efficient Bayesian framework for localization of moving terminals (MTs) in wideband wireless networks. In a previous paper, the authors have presented a grid-based technique, based on a hidden Markov model, that used the power delay profiles of the received signals to track the MT position. This grid-based Bayesian method has proved its efficacy in reducing localization...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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