Hi,
I am doing wireless simulation in ns2 with about 700 moving nodes. at time
t = 0 simulation start and at t= 270 a node start raising a message small in
size periodically after every 0.4 seconds. This message is heard by
nearby(upto 300 meters) till about t=780 seconds. After that no one is able
to hear it though there are many nodes around. please can any one help.
the configuration are given below
LL set mindelay_ 50us
LL set delay_ 25us
LL set bandwidth_ 0 ;# not used
Agent/Null set sport_ 0
Agent/Null set dport_ 0
Agent/CBR set sport_ 0
Agent/CBR set dport_ 0
Queue/DropTail/PriQueue set Prefer_Routing_Protocols 1
# unity gain, omni-directional antennas
# set up the antennas to be centered in the node and 1.5 meters above it
Antenna/OmniAntenna set X_ 0
Antenna/OmniAntenna set Y_ 0
Antenna/OmniAntenna set Z_ 1.5
Antenna/OmniAntenna set Gt_ 1.0
Antenna/OmniAntenna set Gr_ 1.0
# Initialize the SharedMedia interface with parameters to make
# it work like the 914MHz Lucent WaveLAN DSSS radio interface
Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.559e-11
Phy/WirelessPhy set RXThresh_ 3.652e-10
Phy/WirelessPhy set Rb_ 2*1e6
# This is for 250
set opt(rr) 250
Phy/WirelessPhy set Pt_ 0.60
Phy/WirelessPhy set freq_ 914e+6
Phy/WirelessPhy set L_ 1.0
# =====================================================================
# This puts in only the headers that we need.
# =====================================================================
remove-all-packet-headers
add-packet-header IP
#add-packet-header CBR
add-packet-header Common
#add-packet-header SLC
add-packet-header HDCtransport
#add-packet-header AODV
add-packet-header Flags
add-packet-header LL
add-packet-header Mac
# ======================================================================
# Main Program
# ======================================================================
#
# Initialize Global Variables
#
*and node configuration is*
*
*
*
*
*$ns_ node-config -adhocRouting $opt(adhocRouting) \
-llType $opt(ll) \
-macType $opt(mac) \
-ifqType $opt(ifq) \
-ifqLen $opt(ifqlen) \
-antType $opt(ant) \
-propType $opt(prop) \
-phyType $opt(netif) \
-channel $chan_1_ \
-topoInstance $wtopo \
-agentTrace OFF \
-routerTrace OFF \
-macTrace ON \
-movementTrace ON \
-EotTrace OFF
I made changes in Phy/WirelessPhy set Pt_ 0.60 by setting the value of Pt_
as 0.29 but it didnot help me. also I tried to put initialEnergy in node
config section above with higher valu that also did not make any difference.
Regards,
Mozaffar
*
