Supporting service differentiation for real-time and best-effort traffic in stateless wireless ad hoc networks (SWAN)
| Autor: | Li-Hsiang Sun, Andrew T. Campbell, Gahng-Seop Ahn, András Veres |
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| Rok vydání: | 2002 |
| Předmět: |
Mobile radio
Computer Networks and Communications business.industry Transmission Control Protocol Wireless ad hoc network Computer science Quality of service ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Mobile computing Admission control law.invention law Distributed algorithm Internet Protocol Wireless The Internet Electrical and Electronic Engineering business Software Explicit Congestion Notification Computer network |
| Zdroj: | IEEE Transactions on Mobile Computing. 1:192-207 |
| ISSN: | 2161-9875 1536-1233 |
| Popis: | 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. The proposed architecture is designed to handle both real-time UDP traffic, and best effort UDP and TCP traffic without the need for the introduction and management of per-flow state information in the network. SWAN supports per-hop and end-to-end control algorithms that primarily rely on the efficient operation of TC/IP protocols. In particular, SWAN uses local rate control for best-effort traffic, and sender-based admission control for real-time UDP traffic. Explicit congestion notification (ECN) is used to dynamically regulate admitted real-time sessions in the face of network dynamics brought on by mobility or traffic overload conditions. SWAN does not require the support of a QoS-capable MAC to deliver service differentiation. Rather, real-time services are built using existing best effort wireless MAC technology. Simulation, analysis, and results from an experimental wireless testbed show that real-time applications experience low and stable delays under various multihop, traffic, and mobility conditions. |
| Databáze: | OpenAIRE |
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