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An Adaptive Multimedia QoS Scheduler for 802.11e Wireless LANs

Summary: An Adaptive Multimedia QoS Scheduler for
802.11e Wireless LANs
Inanc Inan Student Member, Feyza Keceli Student Member, and Ender Ayanoglu Fellow
Center for Pervasive Communications and Computing
Department of Electrical Engineering and Computer Science
The Henry Samueli School of Engineering
University of California, Irvine
Email: {iinan, fkeceli, ayanoglu}@uci.edu
Abstract-- The IEEE 802.11e standard defines the Hybrid
Coordination Function (HCF) which specifies the QoS algorithms
in the MAC layer of the next generation 802.11 wireless LAN
(WLAN). The HCF is composed of two access functions: A
distributed contention-based channel access function (EDCA)
providing prioritized QoS and a centralized polling-based chan-
nel access function (HCCA) providing parameterized QoS. In this
paper, we address the efficient medium access control (MAC) of
the mostly variable bit rate (VBR) and bursty multimedia traffic
in HCCA and propose a novel application-aware adaptive 802.11e
QoS scheduler. The proposed scheduler coordinates the resource
allocation of the associated flows using adaptive service intervals,


Source: Ayanoglu, Ender - Department of Electrical and Computer Engineering, University of California, Irvine


Collections: Engineering