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Performance evaluation of directional antenna-assisted MAC protocols in the presence of mobility
Alonso Zárate, Luis Gonzaga; Verikoukis, Christos; Koutsopoulos, Iordanis
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils
Wireless LANs
Distributed queuing MAC
IEEE 802.11
The basic feature of the emerging IEEE 802.11n and other standards for high throughput is the presence of directional antennas at network nodes. In this work
we evaluate the performance of media access control protocols in envisioned IEEE 802.11n wireless LANs that operate in point coordination function (PCF) mode. The Access Point (AP) is equipped with an adaptive antenna array. An underlying objective of the access control protocol is to identify and localize individual users in order to transmit information to them. The performance metric is the required time for localization of all users. In an earlier work [3]
access control protocols are studied
that employ directional transmissions with contention-based or contentionfree polling methods to locate users residing in or out of coverage range of the AP. However
the location of users is oftentimes subject to changes due to mobility.
Cues, Teoria de
Xarxes d'àrea local sense fils (Xarxes d'ordinadors)
National Technical University of Athens

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