---------- Forwarded message ----------
From: Freak Moister <[EMAIL PROTECTED]>
Date: Oct 9, 2007 10:18 AM
Subject: Mobile Node range questions.... again
To: [email protected]
Hi everyone
I've looked through many of the threads pertaining to node/BS ranges.
However when I try to modify the codes things still don't work out. I'm
wondering if there's still something I'm missing??
I'm trying to simulate a cellular mobile network in WCDMA using the Ad-hoc
networking tools. Meaning I need transmission ranges around 2km or greater.
What I've done:
1. I've calculated the RXThreshold_ using threshold.cc and put it in my code
as:
set opt(netif) Phy/WirelessPhy ;# network interface
type
$opt(netif) set RXThresh_ 2.0465e-11 ;# set receiver threshold
$opt(netif) set Pt_ 0.125 ;# set transmitter transmit power
0.125W
$opt(netif) set freq_ 2e+9
2. I've changed the antenna heights in their respective node config places
$opt(ant) set Z_ 30 ;# BS antenna at 30m height
$opt(ant) set Z_ 1.7 ;# mobile node antenna at 1.7m height
3. changed the rang parameter in setdest.cc to 2000m
4. changed the SISF parameter for mac-802_11 in ns-default.tcl to around
100us
5. changed the DSSS_max delay in mac-802_11.h to around 100us as well
Currently my tx ranges are only around 400m... don't know what else I need
to change or have the changes I've made been correct. Greatly appreciate it
if anyone can help.
~Joyce
