By considering a WLAN with a polling MAC scheme and a centralized topology based on a hub with control and relay functions, this paper investigates the problem of managing the resources relative to the uplink and the downlink. The proposed and analytically studied resources allocation is a FDD scheme, with a suitable organization of the signal and information packets on the band partition. In order to make realistic the investigation, a not ideal channel, characterized by a certain bit error probability, two ARQ strategies, to mitigate the error effects, and a traffic model, to consider packet routes from stations inside and outside the WLAN, are taken into account. A general performance optimization procedure, based on an opportune bandwidth partition selection, is presented and some results are shown, by considering a simple scenario.
WLAN Token Passing MAC Proposal with Optimized FDD technique
Giovanardi A.;Mazzini G.
1999
Abstract
By considering a WLAN with a polling MAC scheme and a centralized topology based on a hub with control and relay functions, this paper investigates the problem of managing the resources relative to the uplink and the downlink. The proposed and analytically studied resources allocation is a FDD scheme, with a suitable organization of the signal and information packets on the band partition. In order to make realistic the investigation, a not ideal channel, characterized by a certain bit error probability, two ARQ strategies, to mitigate the error effects, and a traffic model, to consider packet routes from stations inside and outside the WLAN, are taken into account. A general performance optimization procedure, based on an opportune bandwidth partition selection, is presented and some results are shown, by considering a simple scenario.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
