. Dieing 4: Sink E F T, tong PA= 5, thng
a)MA chuong trinh
Cac tuS7 chop vi mai true:mg mang duqc khai bao nhu sau: set val(chan) Channel/WirelessChannel ;# Kieu kenh
set val(prop) Propagation/TwoFtayGround ;# Kieu phat v8 tuyen set val(netif) Phy/WirelessPhy ;# Kik giao tiep m(mg set val(mac) Mac/802_11 ;# Kik MAC
set val(PHENOMmac) Mac ;# Kieu MAC Phenomenon set val(ifq) Queue/DropTail/PriQueue ;# Kieu hang dqi
set val(11) LL ;# Kieu lop lien ket s6 lieu set val(ant) Antenna/OmniAntenna ;# Kieu antent set val(ifqlen) 50
set val(nn) 26 set val(rp) AODV set val(x) 451 set val(y) 451
;# s6 g6i cvc dal trong hang dqi ;# T6ng seo nut Sensor va Sink
;# Giao they djnh tuyen ;# Chieu dai ban d6 (m) ;# Chi& rOng ban a (m)
set val(engmodel) set val(txPower) set val(rxPower) set val(sensePower) EnergyModel 0.175 ;# C8ng suit truyen (mW) 0.175 ;# C8ng suit nhin (mW)
set val(idlePower) 0.0 ;# Cong suk khictu trb roi (mW) set val(initeng) 0.5 ;# Nang ltrqng ban du (J)
MOt dap chuong trInh chinh: # Main Program
# Khoi tao bier toan cuc
set ns_ [new Simulator] set tracefd [open phenom 1 I .tr w] $ns trace-all $tracefd
set namtrace [open phenoml 1 .nam w]
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
Trong chuong trinh chinh di djnh ngliia ten File s6 lieu dau ra (Trace, NAM) vi
thiet lop kiln kenh, giao thirc, nut. Thiet 1#p tog dO cho cic not vi khai bao cic sv kien xiy ra trong thin gian m8 phang.
Sau khi dii c6 ma diu vio duqc luu trong file phenom.tcl ta bit du ch?y m8 phang bang lenh: nam phenom trong cua s6 X. Sau khi chay xong ta ce the quan sit hinh lath bing img dung NAM trong ns-2.
b) Phan tich kit qui
Viec firth toan kat qui dva tren viec phan tich file Trace. File Trace duqc djnh dang gam cic trubng co ban:
[sv kin] [thbi gian] [s6 thin to nit] [mire Trace] ---- [so this ter g6i] [Ideu gall [kich thubc goi][dia chi Mac][ning luqng can IC [kiln hien ttryng].
Cic sv kien trong trubng sv kien gam r (nhon g6i), s (girl g6i), D (mit g6i), f (chuyen tiep g6i); truing thbi gian chi ra thbi diem xiy ra su kien; truing met Trace chi ra sr kien nay thuOc phom vi (mire dO) m8 phang nio (tic nhin (nhtr udp), 16p lien
ket s6 lieu (MAC) hay mire vet ly, ....).
yth yeu eau tinh toan trong truing hqp niy, ta chi can quan dun tin 4 trubng dau tien vi train fling luqng.
r 1.026254208 _7_ RTR 0 AODV 48 [0 fffifIff 8 800] [energy 0.499860] — [8:255 -1:255 30 0] [0x2 1 1 [26 0] [8 4]] (REQUEST)