Future Image Communication. Communication Services. Multimedia Communications Services.

Communication Services for Multimedia Systems

Narnia: A Virtual Machine for Multimedia Communication Services

Narnia is middleware that helps programmers build multimedia communication services. This middleware uses a collection of familiar programming abstractions— including events, event handlers, resources, sessions, and user roles—to provide both a service development environment and a service execution environment. The run-time environment—the Narnia virtual machine— provides means for creating, t...

A Communication Middleware for Ubiquitous Multimedia Adaptation Services

Ubiquitous services have gained increasing attentions in the area of mobile communication aiming to allow service access anywhere, anytime and anyhow while keeping complexity to a minimum for both users and service providers. Ubiquitous environment features a wide range and an increasing number of access devices and network technologies. Context-aware content/service adaptation is deemed necess...

A Cross Layer Spoofing Detection Mechanism for Multimedia Communication Services

The convergence of different network types under the same architecture offers the opportunity for low cost multimedia services. The main objective has been the high quality of the provided services. However, considering that older equipment with limited processing capabilities may be present in such environments, a tradeoff between security and service quality is inevitable. Specifically, low r...

Performance Analysis of Cellular Mobile Communication Networks Supporting Multimedia Services

This paper illustrates the development of an analytical model for a communication network providing integrated services to a population of mobile users, and presents performance results to both validate the analytical approach, and assess the quality of the services offered to the end users. The analytical model is based on continuous-time multidimensional birth–death processes, and is focused ...