In the past months the deployment of Wireless Local Area Network (WLAN) hot spots has vastly increased in many places world-wide and the IEEE 802.11 standard is playing a more and more important role in future mobile radio networks of the 4th Generation (4G). In order to fulfill the requirements of such 4G networks the WLAN technology has to provide mechanisms for the transport of Quality-of-Se...

We consider a cellular system with two-level hierarchy, where RSVP resource reservation is made newly over the two-hop link between the macro-level base station and the mobile host during a handoff. For wireless access networks, we propose a dynamic resource allocation scheme that adapts to variations in handoff attempts, where a macrocell provides bandwidth channels for the GS (guarantee servi...

This document presents some observations on "simple best-effort traffic", defined loosely for the purposes of this document as Internet traffic that is not covered by Quality of Service (QOS) mechanisms, congestion-based pricing, cost-based fairness, admissions control, or the like. One observation is that simple best-effort traffic serves a useful role in the Internet, and is worth keeping. Wh...

This paper proposes new data control (best effort rate control) algorithm which changes minimum contention window (CWmin) of best effort traffic with respect to traffic load. By applying new traffic load indication parameter, CWmin of best effort is adaptively controlled. In the result of C++ based network simulation, throughput and drop rate of QoS traffic are guaranteed when proposed algorith...