A Distributed Proxy System for High Speed Clients

The use of Internet services with information access at anytime and anywhere, especially, for mobile clients at high speed, like cars or trains, has been increasing during the last years. This paper presents a novel multilayered architecture based on WiFi, WiMAX and proxy nodes offering reliability for broadband channels and Internet access on highways. We identify several weaknesses of standard fixed infrastructure-based networks and present novel extensions in order to improve several parameters for Quality of Service. Specifically, a distributed proxy system, algorithms, and a routing protocol supporting a feed-forward mechanism for efficient connection transfer between cells have been developed. Additionally, for further discussion of the bandwidth seam of WiFi and WiMAX, a simulation model with the OPNET Modeler was created and evaluated.