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A recent paper (Edman et al. ) has taken a combinatorial approach to measuring the anonymity of a threshold mix anonymous communications system. Their paper looks at ways of matching individual messages sent to individual messages received, irrespective of user, and determines a measure of the anonymity provided by the system. Here we extend this… (More)
The IP Multimedia Subsystem (IMS) is a converged framework for delivering voice, video and data communication services to mobile and fixed users. The present operator-centric IMS model, which assume a single operator for the access network, IMS core and application servers, restricts if and how users can access services beyond the IMS core network. The… (More)
Although the IP Multimedia Subsystem (IMS) and Web Serviceshave been developed on the basis of different Service Delivery Platforms (SDP), opportunities for new services have emerged from converged access to IMS and Web Services. Researchers are focusing on finding means to develop converged access architectures for IMS and Web Services while preserving the… (More)
Radio links in cognitive wireless mesh networks (CWMN) exhibit fluctuations in link capacity due to the unpredictable nature of the occupancy of frequency holes by primary users in addition to variability in the quality of wireless channels. These variations prevent quality of service (QoS) from being delivered on CWMNs solely by using traditional… (More)
A variety of wireless access technologies provides todaypsilas users with pervasive access to critical content and applications. Guaranteeing a satisfactory quality of service requires reliable and ubiquitous delivery schemes that optimally use the available access technologies. This paper presents a novel architecture to support adaptive real-time data and… (More)
We present WebRTC, describe its strengths and weaknesses and present its different forms of integrations, in the form of mediated, asymmetric or bridged communications. We go on to discuss the issues of providing real peer to peer communications on the basis of WebRTC and propose several building blocks to support such communications.
The IP multimedia subsystem (IMS) defines a generic architecture to support communication services over a Session Initiation Protocol (SIP) infrastructure. In the IMS architecture, application servers host and execute the IMS service logic. These servers can be SIP application servers, open services architecture (OSA) application servers, or a customized… (More)