Multimedia Wireless Networks from a Teletraffic Perspective

Emerging ubiquitous telecommunications systems will enableinteractions between various types of device, in both wired and wirelessnetworks, and among Peer-to-Peer (P2P) application overlay networks, thus,evolving into a Ubiquitous-to-Ubiquitous Environment (U2E) infrastructure.This will permit users to build their own ubiquitous communication servicesusing a combination of different P2P communication technologies. Dynamic,heterogeneous and distributed P2P overlay networks will help to create newubiquitous services, through the convergence of communications and highlyadaptive reconfigurable terminals. They will also bring new challenges. In thispaper, we will discuss the evolution of U2E computing, its securityarchitectures, challenges, and proposed solution models. We will discuss theU2E infrastructure, and problems involved in securing ubiquitous environments.Our goal is to discuss U2E evolution, to survey its security issues, establish keyrequirements for its security architectures, and propose feasible security models.