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! >>
