LAN - WAN Standards White Papers
An Adaptive Multimedia QoS Scheduler for 802.11e Wireless LANs
Overview The IEEE 802.11e standard defines the Hybrid Coordination Function (HCF) which species 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 channel access function (HCCA) providing parameterized QoS. This paper addresses 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; transmit opportunities, and polling order.
| Publisher | University of California | File Format | |
|---|---|---|---|
| Date Published | February 2006 | ||
| Format | White Papers | ||
| Topics | |||
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