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 *