Actually my question is: In my tcl file after i load the 802_11EXT parameters then how do i access those parameters later? e.g.
#802.11p default parameters #Phy/WirelessPhyExt parameters are described Mac/802_11Ext set CWMin_ 15 Mac/802_11Ext set CWMax_ 1023 Mac/802_11Ext set SlotTime_ 0.000013 Mac/802_11Ext set SIFS_ 0.000032 Mac/802_11Ext set ShortRetryLimit_ 7 Mac/802_11Ext set LongRetryLimit_ 4 Mac/802_11Ext set HeaderDuration_ 0.000040 Mac/802_11Ext set SymbolDuration_ 0.000008 Mac/802_11Ext set BasicModulationScheme_ 0 Mac/802_11Ext set use_802_11a_flag_ true Mac/802_11Ext set RTSThreshold_ 2346 Mac/802_11Ext set MAC_DBG 0 # e.g. later in the code if i have to print the value Pt_ then how do i do it? # puts "$CWMin_"; # doesn't work Regards, Pratik Joshi On Sun, Nov 30, 2014 at 5:26 PM, Pratik Joshi <pratik.joshi...@gmail.com> wrote: > Thanks Knudfl for the reply. The default one in the original file > (ns-allinone-2.34/ns-2.34/tcl/ex/802.11/IEEE802-11p.tcl is: > Mac/802_11Ext set CWMin_ 15 > Mac/802_11Ext set CWMax_ 1023 > > But i would like to change it to 0-15 from my tcl script and not change > these values from the original file. But before that when i am simulating > VANET then is this the same contention window range with which the packets > are being sent? or do these CW range means something different? > > Regards, > Pratik Joshi > > On Sat, Nov 29, 2014 at 3:15 PM, knudfl <knu...@ofir.dk> wrote: > >> >> > @pratikjoshi >> > IEEE802.11 >> >> ? Change "contention window" from what to what ? ? >> >> Some documentation ... >> . http://www.isi.edu/nsnam/ns/doc/node193.html >> . >> http://www.crhc.illinois.edu/wireless/assignments/simulations/slabc1.html >> . >> >> http://www.ijoar.org/journals/IJOAREC/papers/Implementation-of-Dedicated-Short-Range-Communication-%28DSRC%29-IEEE80211p-in-NS2-and-Its-Performance-Analysis-over-IEEE802-11.pdf >> >> . https://www.google.com/webhp?hl=all&gws_rd=ssl#hl=all&q=IEEE802-11p.tcl >> . >> >> https://www.google.com/webhp?hl=all&gws_rd=ssl#hl=en&q=ns2+Contention+window >> >> - >> >> >> >> -- >> View this message in context: >> http://network-simulator-ns-2.7690.n7.nabble.com/How-to-maniulate-IEEE802-11p-parameters-from-IEEE802-11p-tcl-tp29408p29410.html >> Sent from the ns-users mailing list archive at Nabble.com. >> >> > > > -- > *Regards,* > *Pratik* > -- *Regards,* *Pratik*
