Title :
On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs
Author_Institution :
Univ. of Wollongong, Wollongong, NSW, Australia
fDate :
7/1/2010 12:00:00 AM
Abstract :
This letter highlights a key problem that arises when frame aggregation, a popular method for boosting VoIP capacity, is used in Wireless Local Area Networks (WLANs) that employ asynchronous power save mode (PSM). Specifically, it shows how the PSM proposed by the Wi-Fi Alliance renders frame aggregation ineffective. It then proposes a novel opportunistic scheduler that restores the benefits of frame aggregation whilst ensuring stations have minimal energy expenditure.
Keywords :
Internet telephony; energy conservation; wireless LAN; VoIP capacity; asynchronous power save mode; energy conservation; multirate WLAN; opportunistic scheduler; voice-over-IP; wireless local area networks; Bit rate; Boosting; Capacity planning; Codecs; Delay; Energy conservation; Fading; Helium; IEEE 802.11g Standard; Internet telephony; Multicast algorithms; Wireless LAN; Wireless networks; IEEE 802.11; VoIP capacity; WLANs; opportunistic scheduling;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.07.100468
