The (R)evolution of access networks for the information superhighway

Competition in deregulated telecommunication markets forces network operators to modernize their access networks-often called the “last mile” to the customer-to provide a mix of multimedia and traditional telecommunication services. Economics necessitate an evolutionary, step-by-step approach to migrate from the present access infrastructure-composed mainly of existing telephone networks and cable TV networks-to the ultimate information superhighway. At the end of the day, however, networks of different operators should provide interconnectivity for the same set of services. A system concept is described that drives access network technology toward a “common platform” with generic access methods, cognate routing and switching, and common, standardized communication protocols. Simulation results show some performance figures of the common platform concept. An implementation on a CATV network is presented as well