Computer Science – Networking and Internet Architecture
Scientific paper
2004-11-22
Computer Science
Networking and Internet Architecture
This paper integrates the QoS scheme published in MMCN 2002 with a low latency mobility scheme that appeared in IEEE JSAC May
Scientific paper
The proliferation of IEEE 802.11-based wireless LANs opens up avenues for creation of several tetherless and mobility oriented services. Most of these services, like voice over WLAN, media streaming etc., generate delay and bandwidth sensitive traffic. These traffic flows require undisrupted network connectivity with some QoS guarantees. Unfortunately, there is no adequate support built into these wireless LANs towards QoS provisioning. Further, the network layer handoff latency incurred by mobile nodes in these wireless LANs is too high for real-time applications to function properly. In this paper, we describe a QoS mechanism, called Rether, to effectively support bandwidth guarantee on wireless LANs. Rether is designed to support the current wireless LAN technologies like 802.11b and 802.11a with a specific capability of being tailored for QoS oriented technology like 802.11e. We also describe a low-latency handoff mechanism which expedites network level handoff to provide real-time applications with an added advantage of seamless mobility.
Chiueh Tzi-cker
De Pradipta
Gopalan Kartik
Peng Gang
Sharma Srikant
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