802.11e


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802.11e

Quality of service (QoS) extensions to the 802.11 (Wi-Fi) protocol that give real-time audio and video preference over other data. Also known as "Wi-Fi Multimedia" (WMM) and "wireless multimedia extensions" (WME), the 802.11e enhancements were developed to give the transmission of voice over IP (VoIP) and video streaming a higher priority than Web browsing and file downloads. See Wi-Fi Alliance.
References in periodicals archive ?
Liu, "Priority and delay aware packet management framework for real-time video transport over 802.11e WLANs," Multimedia Tools and Applications, vol.
Moreover, our protocol treats the differentiated traffic in a fairer way than IEEE 802.11e EDCA mechanism.
Unlike normal Acks, Block Acks are not Control Frames, but a category of Action frames that was introduced in the 802.11e amendment [41].
Dorni, "Deployment of a reliable 802.11e experimental setup for throughput measurements," Wireless Communications and Mobile Computing, vol.
Network and Simulation Parameters Number of nodes 16, 25, 36, 49, G4 Network topology Grid Mobility model Random Waypoint Node velocity 0.5 m/s Network interface WiFi (802.11) Antenna Omni directional Radio propagation model Two Ray Ground Reflection Frequency band 2.4 GHz Radio range 250 in Modulation OFDM MAC 802.11e EDCA Routing protocol MP-OLSR Maximum data rate 2 Mbps Basic data rate 1 Mbps Node addressing IPv6 Transport layer protocol UDP Video data 4:2:0 foreman GIF H.2G4/AVC coded Original video duration 17 s Simulation duration 100 s Table 2: Summary of comparison of the four adaptation options.
Authors in [12] propose an algorithm for providing throughput guarantee services in 802.11e EDCF wireless LANs and a Contention Window Based Admission control.
Xiao, "Performance analysis of the IEEE 802.11e block ACK scheme in a noisy channel," in Proceedings of the 2nd International Conference on Broadband Networks (BROADNETS '05), pp.
The focus of the IEEE 802.11e standard is the hybrid coordination function (HCF), which provides an efficient mechanism for centrally coordinated medium access, and uses the enhanced distributed coordination function (EDCF) for distributed coordination of medium access.
Mao, Saturated throughput analysis of IEEE 802.11e EDCA, The Int.
It is also compliant with IEEE 802.11b, 802.11g, 802.11d, 802.11e, 802.11i and 802.11n.