SWAN: Service Differentiation in Stateless Wireless Ad Hoc Networks

—We propose SWAN, a stateless network model which uses distributed control algorithms to deliver service differentiation in mobile wireless ad hoc networks in a simple, scalable and robust manner. We use rate control for UDP and TCP best-effort traffic, and sender-based admission control for UDP real-time traffic. SWAN uses explicit congestion notification (ECN) to dynamically regulate admitted realtime traffic in the face of network dynamics brought on by mobility or traffic overload conditions. We use the term “soft” real-time services to indicate that real-time sessions could be regulated or dropped due to mobility or excessive traffic overloading at mobile wireless routers. SWAN is designed to limit such conditions, however. A novel aspect of SWAN is that it does not require the support of a QOScapable MAC. Rather, soft real-time services are built using existing best effort wireless MAC technology. Simulation, analysis, and results from an experimental wireless testbed show ...

• Type: Conference
• Year: 2002
• Where: INFOCOM
• Authors: Gahng-Seop Ahn, Li-Hsiang Sun, Andras Veres, Andrew T. Campbell
• Keywords: Communications, INFOCOM 2002, Real-time, UDP Real-time Traffic, Wireless