Due to the increasing number of users of the Internet, the need for Quality of Service for the internet has increased. This has lead to the development of Integrated (or IntServ) and Differentiated (or DiffServ) Services as possible replacements to the Best Effort Service that is currently used in the Internet. The lack of scalability in the IntServ model has given rise to the popularity of the...

In this paper, we analyze the tradeoffs between signaling and resource utilization in DiffServ networks partitioned in areas (hierarchical domains) using flow aggregates that can be dynamically adjusted. These tradeoffs are studied using two analytical models. In the first model, based on multidimensional birth-death processes, the offered load is detailed at the flow level, which allows accura...

The new standard IEEE 802.11e targets at enhancing the legacy 802.11 so that QoS management over WLAN standards becomes possible. This is done by the introduction of two new functions, the enhanced distributed channel access (EDCA) and the hybrid coordination function controlled channel access (HCCA) for offering diffserv and intserv functionalities. The efficient coordination of both functions...