Investigation of the IEEE 802.11 Medium Access Control (MAC) Sublayer Functions
INFOCOM '97 Proceedings of the INFOCOM '97. Sixteenth Annual Joint Conference of the IEEE Computer and Communications Societies. Driving the Information Revolution
IEEE 802.11 Wireless Local Area Networks
IEEE Communications Magazine
Analyzing the hidden-terminal effects and multimedia support for wireless LAN
Computer Communications
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Packet voice communications over PC-based local area networks
IEEE Journal on Selected Areas in Communications
Dynamic polling mechanism for enhancing voice transmission in IEEE 802.11e wireless LANs
International Journal of Wireless and Mobile Computing
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This paper presents a new dynamically adaptable polling scheme for efficient support of voice communications over an IEEE802.11 network. The proposed Cyclic Shift and Station Removal polling scheme is implemented only on the Access Point of each Basic Service Set without requiring any modification on the existing access protocol. This polling scheme increases the number of conversations in case of silence detection, while maintains high voice quality. By considering constant bit rate digitized voice traffic, the paper presents a discrete-time Markov chain model, that is, used to analyze the performance of the IEEE802.11 Point Coordination Function in terms of maximum number of supported conversations, when silence detection is used at the mobile terminals. The paper also determines how the parameters of the proposed polling scheme have to be related to the silence detector hangover.