LoRaWAN The LoRa Alliance first defined the LoRaWAN standard with the objective of creating a medium access scheme and a set of network management policies that leverage the properties of […]
Low-power wide-area network (LPWAN). These networks use low-power radio signals, such as those in the sub-1 GHz range, to send small amounts of data over a large area. LPWANs are […]
SUMO has different tools for creating and customizing road networks and traffic flows and traffic signals. In this article, we will use some of those tools available in SUMO to […]
Spring Mobility Spring mobility is nothing but making a node to move in a path similar to that of an expanded circular coil spring. From the top or bottom point […]
Mobility Models of ns-3. The default ns-3 installation will contain the following mobility models. MobilityModel Subclasses ConstantPosition ConstantVelocity ConstantAcceleration GaussMarkov Hierarchical RandomDirection2D RandomWalk2D RandomWaypoint SteadyStateRandomWaypoint Waypoint PositionAllocator Position allocators […]
Aquatic Animal Tracking: Tracking marine animals can be extremely tricky due to GPS signals not functioning well underwater[1]. Underwater acoustic communication is a technique of sending and receiving messages below […]
i’ve problem in running tora
$ ns adhoc.tcl TORA cbr-50-10-2 scene-50-0-20-100-500-500
num_nodes is set 50
INITIALIZE THE LIST xListHead
(_o17 cmd line 1)
invoked from within
“_o17 cmd port-dmux _o28”
invoked from within
“catch “$self cmd $args” ret”
invoked from within
“if [catch “$self cmd $args” ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error “error when calling class $cls: $args” $…”
(procedure “_o17” line 2)
(SplitObject unknown line 2)
invoked from within
“$agent port-dmux $dmux_”
(procedure “_o14” line 11)
(Node/MobileNode add-target-rtagent line 11)
invoked from within
“$self add-target-rtagent $agent $port”
(procedure “_o14” line 23)
(Node/MobileNode add-target line 23)
invoked from within
“$self add-target $agent $port”
(procedure “_o14” line 15)
(Node attach line 15)
invoked from within
“$node attach $ragent [Node set rtagent_port_]”
(procedure “_o3” line 72)
(Simulator create-wireless-node line 72)
invoked from within
“_o3 create-wireless-node”
(“eval” body line 1)
invoked from within
“eval $self create-wireless-node $args”
(procedure “_o3” line 23)
(Simulator node line 23)
invoked from within
“$ns_ node”
(“for” body line 2)
invoked from within
“for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable r…”
(file “adhoc.tcl” line 61)
how to solve. please explain me step-by-step
regards,
venkat