IEEE 802.15.4模擬的NS2中的AODV數據包大小

我想在NS2中使用AODV協議進行IEEE 802.15.4模擬。我正在從節點0發送一個30字節的數據包到節點1.從發送方開始，數據包將與添加的標題一起傳輸。但是，在接收端，MAC層丟棄路由層頭，但AGT層沒有丟棄MAC層頭。我發送30字節的數據包，但收到50字節的數據包。我在劇本中做錯了什麼？我試圖用AODV模擬IEEE 802.11的代碼，並且它完美地工作。IEEE 802.15.4模擬的NS2中的AODV數據包大小

我附上完整的TCL腳本和跟蹤文件線包0

TCL腳本

#=================================== 
#  Simulation parameters setup 
#=================================== 
set val(chan) Channel/WirelessChannel  ;# channel type 
set val(prop) Propagation/Shadowing  ;# radio-propagation model 
set val(netif) Phy/WirelessPhy/802_15_4 ;# network interface type 
set val(mac) Mac/802_15_4    ;# MAC type 
set val(ifq) Queue/DropTail/PriQueue  ;# interface queue type 
set val(ll)  LL       ;# link layer type 
set val(ant) Antenna/OmniAntenna   ;# antenna model 
set val(ifqlen) 50       ;# max packet in ifq 
set val(nn)  2       ;# number of mobilenodes 
set val(rp)  AODV      ;# routing protocol 
set val(x)  1000      ;# X dimension of topography 
set val(y)  1000      ;# Y dimension of topography 
set val(stop) 2      ;# time of simulation end 

################################################################## 

#=================================== 
Antenna/OmniAntenna set Gt_ 1     ;#Transmit antenna gain 
Antenna/OmniAntenna set Gr_ 1     ;#Receive antenna gain 
Phy/WirelessPhy  set L_ 1.0     ;#System Loss Factor 
Phy/WirelessPhy  set freq_ 2.4e9    ;#channel 
Phy/WirelessPhy  set bandwidth_ 0.25Mb  ;#Data Rate 


###############Simulation experiment # 3 ################################################ 
Phy/WirelessPhy set Pt_ 0.00050118723363   ;#in W for Transmit Power -3dBm IEEE 802.15.4 standard 
Phy/WirelessPhy set RXThresh_ 3.1622776602e-12  ;#Receive Power Threshold -85dBm IEEE 802.15.4 
Phy/WirelessPhy set CSThresh_ 1.5848931925e-12  ;#Carrier Sense Power -88dBm 

#=================================== 
#  Initialization   
#=================================== 
#Create a ns simulator 
set ns [new Simulator] 

#Setup topography object 
set topo  [new Topography] 
$topo load_flatgrid $val(x) $val(y) 
create-god $val(nn) 

#Open the NS trace file 
set tracefile [open outAODV.tr w] 
$ns trace-all $tracefile 

#Open the NAM trace file 
set namfile [open outAODV.nam w] 
$ns namtrace-all $namfile 
$ns namtrace-all-wireless $namfile $val(x) $val(y) 
set chan [new $val(chan)];#Create wireless channel 


#=================================== 
#  Mobile node parameter setup 
#=================================== 
$ns node-config -adhocRouting $val(rp) \ 
       -llType  $val(ll) \ 
       -macType  $val(mac) \ 
       -ifqType  $val(ifq) \ 
       -ifqLen  $val(ifqlen) \ 
       -antType  $val(ant) \ 
       -propType  $val(prop) \ 
       -phyType  $val(netif) \ 
       -channel  $chan \ 
       -topoInstance $topo \ 
       -agentTrace ON \ 
       -routerTrace ON \ 
       -macTrace  ON \ 
       -movementTrace ON 


# first set values of shadowing model 
Propagation/Shadowing set pathlossExp 2.9 ;# path loss exponent 
Propagation/Shadowing set std_db 8.0  ;# shadowing deviation (dB) 
Propagation/Shadowing set dist0 1.0  ;# reference distance (m) 
Propagation/Shadowing set seed 10   ;# seed for RNG 


#=================================== 
#  Nodes Definition   
#=================================== 
set n0 [$ns node]      ;#considered as a sink 
$n0 set X_ 60 
$n0 set Y_ 60 
$n0 set Z_ 0.0 
$ns initial_node_pos $n0 15 

set n1 [$ns node]      ;# Source 1 measured PDR /throughput/Delay varying diatance 
$n1 set X_ 90 
$n1 set Y_ 60 
$n1 set Z_ 0.0 
$ns initial_node_pos $n1 15 

# Start Coordinate/Normal Nodes 
$ns at 0.0 "$n0 NodeLabel \"PAN Coor\"" 
$ns at 0.0 "$n0 sscs startCTPANCoord" 

#=================================== 
#  Agents Definition   
#=================================== 
#Setup a UDP connection 
set null0 [new Agent/Null]  
$ns attach-agent $n0 $null0 

#=================================== 
#  Applications Definition  CBR1  
#=================================== 
#Setup a CBR Application over UDP connection 

set udp1 [new Agent/UDP] 
$ns attach-agent $n1 $udp1 
$ns connect $udp1 $null0 

set cbr1 [new Application/Traffic/CBR] 
$cbr1 attach-agent $udp1 
$cbr1 set packetSize_ 30 
$cbr1 set interval_ .1 

$ns at 1.0 "$cbr1 start" 
$ns at 1.5 "$cbr1 stop" 

#=================================== 
#  Termination   
#=================================== 
#Define a 'finish' procedure 
proc finish {} { 
    global ns tracefile namfile 
    $ns flush-trace 
    close $tracefile 
    close $namfile 
    exec nam out.nam & 
    exit 0 
} 
for {set i 0} {$i < $val(nn) } { incr i } { 
    $ns at $val(stop) "\$n$i reset" 
} 
$ns at $val(stop) "$ns nam-end-wireless $val(stop)" 
$ns at $val(stop) "finish" 
$ns at $val(stop) "puts \"done\" ; $ns halt" 
$ns run

輸出跟蹤文件（包0只）

s 1.000000000 _1_ AGT --- 0 cbr 30 [0 0 0 0] ------- [1:0 0:0 32 0] [0] 0 0 
r 1.000000000 _1_ RTR --- 0 cbr 30 [0 0 0 0] ------- [1:0 0:0 32 0] [0] 0 0 
s 1.000000000 _1_ RTR --- 0 AODV 48 [0 0 0 0] ------- [1:255 -1:255 30 0] [0x2 1 1 [0 0] [1 4]] (REQUEST) 
s 1.000665000 _1_ MAC --- 0 AODV 55 [0 ffffffff 1 800] ------- [1:255 -1:255 30 0] [0x2 1 1 [0 0] [1 4]] (REQUEST) 
r 1.003257100 _0_ MAC --- 0 AODV 48 [0 ffffffff 1 800] ------- [1:255 -1:255 30 0] [0x2 1 1 [0 0] [1 4]] (REQUEST) 
r 1.003282100 _0_ RTR --- 0 AODV 48 [0 ffffffff 1 800] ------- [1:255 -1:255 30 0] [0x2 1 1 [0 0] [1 4]] (REQUEST) 
s 1.003282100 _0_ RTR --- 0 AODV 44 [0 0 0 0] ------- [0:255 1:255 30 1] [0x4 1 [0 4] 10.000000] (REPLY) 
s 1.004352000 _0_ MAC --- 0 ARP 35 [0 ffffffff 0 806] ------- [REQUEST 0/0 0/1] 
r 1.006304100 _1_ MAC --- 0 ARP 28 [0 ffffffff 0 806] ------- [REQUEST 0/0 0/1] 
s 1.006629100 _1_ MAC --- 0 ARP 35 [0 0 1 806] ------- [REPLY 1/1 0/0] 
s 1.008192000 _0_ MAC --- 0 ACK 5 [0 1 0 0] 
r 1.008544100 _1_ MAC --- 0 ACK 5 [0 1 0 0] 
r 1.009184000 _0_ MAC --- 0 ARP 28 [0 0 1 806] ------- [REPLY 1/1 0/0] 
s 1.012032000 _0_ MAC --- 0 AODV 51 [0 1 0 800] ------- [0:255 1:255 30 1] [0x4 1 [0 4] 10.000000] (REPLY) 
s 1.014048100 _1_ MAC --- 0 ACK 5 [0 0 1 0] 
r 1.014400200 _0_ MAC --- 0 ACK 5 [0 0 1 0] 
r 1.015040100 _1_ MAC --- 0 AODV 44 [0 1 0 800] ------- [0:255 1:255 30 1] [0x4 1 [0 4] 10.000000] (REPLY) 
r 1.015065100 _1_ RTR --- 0 AODV 44 [0 1 0 800] ------- [0:255 1:255 30 1] [0x4 1 [0 4] 10.000000] (REPLY) 
s 1.015065100 _1_ RTR --- 0 cbr 50 [0 0 0 0] ------- [1:0 0:0 30 0] [0] 0 0 
s 1.017650100 _1_ MAC --- 0 cbr 57 [0 0 1 800] ------- [1:0 0:0 30 0] [0] 0 0 
s 1.020032000 _0_ MAC --- 0 ACK 5 [0 1 0 0] 
r 1.020384100 _1_ MAC --- 0 ACK 5 [0 1 0 0] 
r 1.021024000 _0_ MAC --- 0 cbr 50 [0 0 1 800] ------- [1:0 0:0 30 0] [0] 1 0 
r 1.021049000 _0_ AGT --- 0 cbr 50 [0 0 1 800] ------- [1:0 0:0 30 0] [0] 1 0

來源

2017-05-18 Sajeeb Saha

有當使用lr-wpan而不是wifi時，許多deffernt參數需要被修改。如果你想建立的基於IEE802.15.4無線傳感器網絡你可以找到在這個路徑有用的例子

.\ns-allinone-2.35\ns-2.35\tcl\ex\wpan

使用它們作爲模板，或使他們的利益來修改你的代碼。

也是這本書解釋了這些例子

.....\ns-allinone-2.35\ns-2.35\wpan\WPAN_ZBR_pub.pdf

問候

來源

2017-11-10 23:41:46

IEEE 802.15.4模擬的NS2中的AODV數據包大小

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