I've seen some code in the CVS somewhere that partially implemented these functionalities
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of Martina Umlauft > Sent: quinta-feira, 16 de Março de 2006 11:30 > To: David Fuste; David Fuste > Cc: NS-users; NS-users > Subject: Re: [ns] Supporting infrastructure WLANs in NS2 > > > Hi, > > look for the NOAH (Non-Ad-Hoc) routing module for ns-2. With this you > can prevent wireless nodes from talking directly with each other; iow. > you can force them to go through the BS and have an infrastructure > network. > > I do not know of any module that implements Association/Disassociation > overhead or scanning. Also, there has been some critique on the phy > models lately - you have to think about how exact a phy model you really > need. > > HTH, Martina > > David Fuste schrieb: > > I will understand no reply as no support for infrastructure WLANs in > NS2. > > Moreover, I have found this text in google: > > > > Bugs in NS2 > > Simulators always need assumtions to make their calculations viable. > > However, when some assumptions are crucial in your simulations, you must > > be careful. For example, there is no scanning for WLAN > > (Discovery/Select/Authentication/Association) in NS-2, mobile nodes are > > associated with their BS automatically if they have the same pre-defined > > domain. If you want to study the overhead of scanning, you should make > > your extension. > > > > ...but also I have found this in a IEEE paper: > > > > Abstract—This paper presents an analytic model for computing the > > capacity of an infrastructure IEEE 802.11 WLAN enhanced with the support > > of the bidirectional MAC > > frame aggregation...Simulations with ns2 are performed and the > > simulation results show that ... > > > > So, it seems someone has performed some work in this area. > > Please, Does someone know about the existence of works in this area? > > Thank you! > > > > David Fuste wrote: > >> Hi all, > >> I just want to know if there is already support for simulating > >> infrastructure WLANs in NS2 or nowadays, NS2 only supports ad-hoc > WLANs. > >> All wireless examples in the NS2 package are based in ad-hoc WLANs, > even > >> in the wired-cum-wireless scenario, where communication between > wireless > >> nodes takes place directly between them, using an ad-hoc routing > >> protocol (AODV,...) instead of using the base station or access point > as > >> intermediate node. > >> Moreover, these wireless nodes don't simulate > assosiation/authentication > >> messages to the base station as is defined in the IEEE 802.11 > standard. > >> Beacons,... > >> > >> I think it is a big drawback if NS2 doesn't have support to > >> infrastructure WLANs. And before start to "implement" it in a simple > >> version, I want to know if there is already some work in this area. > >> Thank you very much! > >>
