[ns] proper WSN CBR rate

[Mariam Elansary]

AlSalamo Aliokm

Dears,

1-  I wonder, how can I choose the proper value of the CBR rate? is 5.4Mb/s
is fine?

2-  Mac/802_11 vs Mac/802_15.4?

Here is my model:
-------------------------------------------------------------------------------------------

Mac/802_11 set dataRate_ 		11Mb                ;# 802.11 data transmission
rate
Mac/802_11 set basicRate_ 		1Mb                 ;# 802.11 basic transmission
rate 

Mac/802_11 set RTSThreshold_            0                   ;# bytes

set val(chan)		Channel/WirelessChannel             ;# channel type
set val(ant) 		Antenna/OmniAntenna                 ;# antenna type
set val(propagation) 	Propagation/TwoRayGround	    ;# propagation model
set val(netif) 		Phy/WirelessPhy                     ;# network interface
type
set val(ll)		        LL                                  ;# link layer type
set val(ifq) 		        Queue/DropTail/PriQueue             ;# interface
queue type
set val(ifqlen) 	        100                                 ;# max packet
in ifq
set val(mac) 		Mac/802_11                          ;# MAC type
set val(rp) 		        AOMDV                                ;# routing
protocol
set val(n) 		       100.0 				    ;# node number
set val(end) 		200.0                               ;# simulation time [s]
set val(mobility) 	        Static 				    ;# mobility model
set val(traffic) 	        Node-UDP 			    ;# data pattern
set val(dataStart) 	10.0                                ;# data start time
[s]
set val(dataStop) 	[expr $val(end) - 10.0]             ;# data stop time [s]
set val(seed) 		1				    ;# general pseudo-random sequence generator
set val(throughput) 	5.4	 			    ;# CBR rate (<= 5.4Mb/s)



                       set cbr($src($i)) [new Application/Traffic/CBR]
			$cbr($src($i)) attach-agent $udp($src($i))

			$cbr($src($i)) set packetSize_ 52
			$cbr($src($i)) set random_ false
			$cbr($src($i)) set rate_ ??? Mb
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