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Auto Rate Fall Back Algorithm for ns-2.26
Beside, the physical interface has been changed in order to give to
different rates a different transmission range.
Now physical interface model Cisco Aironet parameters.

Software realized by Luigi Iannone <luigi.iannone@lip6.fr>
This software works only for ns version 2.26


INSTALL

1. Uncompress files:

   # gunzip ARFB.tar.gz
   # tar -vxf ARFB.tar

2. Copy all diff files in the ns-2 directory

   # cp -v *.diff {NS-HOME}

3. Go in the ns-2 directory and apply patches

   # cd {NS-HOME}
   # patch -d mac < mac-arfb.diff
   # patch -d common < common-arfb.diff
   # patch tcl/lib/ns-default.tcl ns-default-arfb.diff

4. Edit your Makefile.in adding -DGgX compile define

        DEFINE  = -DGgX -DTCP_DELAY_BIND_ALL -DNO_TK @V_DEFINE@....

5  Recompile ns:

   # ./configure
   # make depend
   # make

DONE now your ns should be able to use ARF.

If your run wlan1.tcl script you should obtain something like
wlan1.ps. In wlan1.tcl two nodes exchange UDP traffic. One of the
nodes moves away from the other. wlan1.ps shows how the throughput
lowers when node is so far that a lower rate should be used.
The plot is twofold, it shows how ARF well changes the rate and it
shows how the physical interface is more real and has different tx
ranges for different tx rates.
  
For a complete of the commands available get a look to the
modification in the "command" routine of "mobilenode.cc" file.

For any other question... mail me.