This paper focuses on the integration of Internet and Wireless LANs (WLANs) and proposes a novel technique that supports seamless and efficient integration. This technique is based on a generic adaptation layer, referred to as Wireless Adaptation Layer (WAL), which is introduced between the IP layer and the WLAN Link Layer. WAL is designed to (i) dynamically cope with the wireless channel impai...

Security represents one of the major obstacles today to the wider deployment of IP mul-ticast. The current work identiies and discusses the various concepts and issues underlying multicast security. A classiication of the current issues is provided, covering some core problems , infrastructure problems, and the complex applications that may be built atop a secure IP multicast. Three broad core ...

We discuss the design and evaluation of a secure and fault tolerant storage infrastructure for un-trusted distributed computing environments. Previous designs of storage systems for this space have tended to use decoupled mechanisms for achieving fault tolerance and security. Our design, based on cryptographic properties of error-correction odes, combines redundancy (for fault tolerance) and en...

This paper presents Contory, a middleware specifically deployed to support provisioning of context information on mobile devices such as smart phones. Contory integrates multiple strategies for context provisioning, namely internal sensors-based, external infrastructure-based, and distributed provisioning in ad hoc networks. Applications can query Contory about context items of different types,...

One of the ways towards provision of low-cost mobile multimedia entertainment is to make possible the sharing of the wireless resources among multiple operators of different radio access technologies. Here we discuss opportunities for new system architectures enabled by sharing the resources belonging to the cellular and broadcasting systems, namely the spectrum and the infrastructure. The goal...

Peer-to-peer systems have gained a lot of attention as information sharing systems for the wide-spread exchange of resources and voluminous information among thousands of users. However, current peer-to-peer information sharing systems work mostly on wired networks. With the growing number of communication-equipped mobile devices that can self-organize into infrastructure-less communication pla...

Effective service delivery capabilities are critical to the transformation of the Internet into a viable commercial infrastructure. At the same time, there are several design limitations that prevent this. In this paper, we propose a novel service overlay architecture that serves as a flexible, unifying platform for delivering services over the Internet. We introduce a new addressing scheme and...

Wireless or mobile network is the new generation of wireless network that is different from the wired approach in many aspects like power and energy efficient routing protocols, routing configuration, network infrastructure. There are several protocols proposed for the deployment of MANETs in fields like government, military etc. In this paper we are proposing a technique to identify attack i.e...

Recent advances in digital video hardware, software and coding standards have led to a wide variety of digital video products. However, such continuous evolution leads to the necessity of regular replacements of the available multimedia devices. To avoid this, a new initiative within the MPEG community, namely Reconfigurable Video Coding, has risen to provide the flexible framework that allows ...

The outbreak of Ebola inWest Africa is devastating to the affected countries. With no specific treatments or preventivemeasuresavailable,Ebolahas, todate,caused almost 2300 deaths,1 overwhelmed fragile health care systemsandthereby led to inadequatecare forother serious diseases, and slowed economic activity. YetEbolamost likelywill notbecomeaglobalhealth threat.2 Ebola only spreads throughdire...