extensions [matrix] extensions [array] globals [ FSPL Dist_m SNR BER EbNo Lp pr-list datarates num_voice num_real num_data] breed [BSs BS] BSs-own [power-in-dB] breed [nodes node] nodes-own [ xcord ycord dist priority ] breed [ timers a_timer ] timers-own [ owner timeout action ] ;; Setup the radio environment to create clear-all create-BSs num-BS [ set shape "bst" set color white set size 20 set power-in-dB -30] create-nodes num-nodes [ set shape "mob" set size 2 set color 52 set label who set label-color red] reset-ticks end to set-priority ;;set the priority on a random basis set datarates ["96kbps" "512kbps" "64kbps"] let i 1; set pr-list []; while [i < num-nodes] [ ask node (i) [set priority random 3 fd 0.2] set i i + 1 ] set pr-list ([priority] of nodes) end to assign set datarates ["96kbps" "512kbps" "64kbps"] ;ask min-one-of nodes [priority][ create-link-with turtle 0] ;ask links [set color blue set label item 0 datarates ] ;if any? nodes with [priority = 1] [ ask links [set color white set label item 1 datarates ]] foreach (pr-list) [ask nodes with [priority = 0] [ifelse ? = 0 [voice] [fd 1]] ] foreach (pr-list) [ask nodes with [priority = 1] [ifelse ? = 1 [realtime-video] [fd 1]] ] foreach (pr-list) [ask nodes with [priority = 2] [ifelse ? = 2 [store-forward-data] [fd 1]] ] end to voice set num_voice count nodes with [priority = 0] ask n-of (num_voice - 1) nodes with [priority = 0] [create-link-with turtle 0 fd 0.1] ask links[ set color green set label item 0 datarates] ask links with [color = green] [die] end to realtime-video set num_real count nodes with [priority = 1] ask n-of (num_real - 1) nodes with [priority = 1] [create-link-with turtle 0 fd 0.1] ask links[ set color orange set label item 1 datarates] ask links with [color = orange] [die] end to store-forward-data set num_data count nodes with [priority = 2] ask n-of (num_data - 1) nodes with [priority = 2] [create-link-with turtle 0 fd 0.2] ask links[ set color red set label item 2 datarates] ask links with [color = red] [die] end ;; Perform Calculation to calculate ;let dist Distance-nodes ask BSs [set ycor 0 set xcor 0] ask nodes [ ; head in a random direction perform-mobility ;; subroutine for mobility set-priority assign voice realtime-video store-forward-data ] tick ask nodes [ ask patch-here [ set pcolor yellow ] print word("The distance from ") self print word(" to the Base Station is " ) distancexy 0 0 ;; Initialize Parameters and calculate Free Space Path Loss set Dist_m distancexy 0 0 if Dist_m > Comm_range [ set label " Out of Range!" wait 2 type "the node has gone beyond the range of communication. " set label who stop ] let c 3 * 10 ^ 8 let freq 0 set freq Frequency_MHz let lambda 0 set lambda c / (freq * 1000000) set FSPL 20 * log( Dist_m) 10 + 20 * log(freq)10 + 32.45 print word("The Free Space PathLoss is ")FSPL ;;link budget assignments Gains in dBi Losses in dB let Pt 0 let B Bandwidth_MHz_receiver * 10 ^ 6 let k 1.380650 * 10 ^ -23 let NF 7 let Pr 0 set Pt Tx_Power_dBm let Lcr 0.56 ;;Effective Noise Temp all in Kelvins let Te 0 let T0 290 let Tant 300 set Te 290 print word("Power Transmitted is ")Pt print"dBm" set Pr (Pt - FSPL) Print word("The power received is ")Pr print"dB" ;; 30 dB fade margin Let Np (10 * log(k * (Te) * B)10) + 30 + NF Print word("The noise power obtained is ")Np print"dBm" set SNR Pr - Np print word("The received SNR is ")SNR ;;EbNo Calculation let Eb 0 set Eb Pr + ( 10 * log(B)10) print Eb let No 0 set No ( Np + 10 * log(1048576)10) print No set EbNo (Eb - No) print word("The Eb/No for the bit rate 1 Mbps system is ")EbNo print "dB" ;;erfc calculation let z sqrt(EbNo) let t 1.0 / (1.0 + 0.47047 * abs(z)) let ans 0 let erfc 0 set erfc exp( - (z * z)) * ((0.3480242 * t) + (t ^ 2 * ( -0.0958798)) + (t ^ 3 * ( 0.7478556))) ;; Abramowitz and Stegun approximation print word("the value of erfc is ")erfc ;;BER calculation for BPSK set BER 0.5 * erfc print word("The BER for BPSK transmitted signal is ")BER do-exhibition1 ;ask links with [color = blue] [die] ] clear-patches reset-ticks end to perform-mobility ask nodes [ set Dist_m distancexy 0 0 if Dist_m > Comm_range [ set label " Out of Range!" wait 2 type "the node has gone out beyond the range of communication. " set label who stop ]] rt random-float 360 set xcord xcord + (transition * dx) set ycord ycord + (transition * dy) ; hide nodes who have moved out of the world ifelse patch-at (xcord - xcor) (ycord - ycor) = nobody [ ht ] [ st set xcor xcord set ycor ycord ] set dist sqrt (xcord * xcord + ycord * ycord) end to terminate ask node Node_of_interest [set label "" ] end to do-exhibition1 set-current-plot "FSPL" set-plot-pen-interval 1 set-plot-x-range 0 30 set-plot-y-range 50 150 plotxy Dist_m FSPL end to-report Received_SNR report SNR end to-report BER_BPSK report BER end to-report Eb/No report EbNo end ;; Initialize Parameters and calculate Okumura-Hata Loss Model (Urban) ;ask turtles [forward 12] ;ask turtles [set heading 32] ;ask turtles [ setxy random xcor ycor] ;ask turtles [ setxy random xcor ycor pen-down left 45 forward 2] ;ask turtles with[ ycor != 0][ set shape "person" set ycor 0 set xcor 10 ; ] ;ask turtles with [hidden?][ ;set color orange] ;;//Noise Generation AWGN// to noise reset-ticks let sigma 0.7 ;;standard deviation of noise let i 0 ;; signal of concern ;; noisy signal let t ticks let x array:from-list n-values 2000 [0] let n array:from-list n-values 2000 [0] let y array:from-list n-values 2000 [0] while[i < 2000] [ array:set n i sqrt sigma * random-normal 0 1 array:set x i sin (2 * pi * Frequency_MHz * i) set i i + 1 ] let xl array:to-list x let nl array:to-list n let yl array:to-list y set yl (map [ ?1 + ?2 ] xl nl) print word("Value of x is ")xl print word("Value of n is ")nl print word("Value of y is ")yl tick end to make-movie ;; from http://ccl.northwestern.edu/netlogo/models/community/Wireless-Coop-Mobile ;; prompt user for movie location user-message "Save your new movie file (choose a name ending with .mov)" let path user-new-file if not is-string? path [ stop ] ;; stop if user canceled ;; run the model assign movie-start path movie-grab-view repeat 2 [movie-grab-view ] ;; export the movie movie-close user-message (word "Exported movie to " path) end @#$#@#$#@ GRAPHICS-WINDOW 210 10 649 470 16 16 13.0 1 10 1 1 1 0 1 1 1 -16 16 -16 16 0 0 1 ticks 30.0 SLIDER 3 84 175 117 num-BS num-BS 0 2 1 1 1 NIL HORIZONTAL SLIDER 5 143 177 176 num-nodes num-nodes 0 100 33 1 1 NIL HORIZONTAL SLIDER 4 197 176 230 Comm_range Comm_range 0 100 50 1 1 NIL HORIZONTAL CHOOSER 688 70 826 115 Frequency_MHz Frequency_MHz 500 990 1000 1 INPUTBOX 857 66 1076 126 Bandwidth_MHz_receiver 2 1 0 Number INPUTBOX 865 198 1084 258 Tx_Power_dBm 17 1 0 Number SLIDER 3 389 175 422 transition transition 0 10 10 1 1 NIL HORIZONTAL INPUTBOX 3 289 204 349 Node_of_interest NIL 1 0 String PLOT 1093 293 1293 443 FSPL Distancein Km FSPL in dB 0.0 20.0 -10.0 10.0 true false "" "" PENS "pen-0" 1.0 1 -15575016 true "" "" MONITOR 790 470 921 515 NIL Received_SNR 17 1 11 MONITOR 935 470 1051 515 NIL BER_BPSK 17 1 11 MONITOR 1063 470 1120 515 NIL Eb/No 17 1 11 BUTTON 104 11 202 44 assign_slots calculate T 1 T OBSERVER NIL NIL NIL NIL 1 BUTTON 2 10 94 43 Setup RAN create NIL 1 T OBSERVER NIL NIL NIL NIL 1 @#$#@#$#@ ## WHAT IS IT? This model demonstrates the decision making capabilities of the central authority (in this case, the base station). The base station assigns the nodes with slots to transmit data packets based on the priority being assigned. The priority is assigned on the basis of type of data the nodes wants to transmit. ## HOW IT WORKS (Real-time voice, video and store-and-forward type of communication is considered in this model where real-time voice is assigned the highest priority and is allowed to make transmission first and the remaining nodes would wait untill the voice communication is completed. The number of channels available is one less than the number of nodes for each priority. The data rates for three of these communication types are also assigned on the fly according to the type of data, nodes want to send. ) ## HOW TO USE IT (how to use the model, including a description of each of the items in the Interface tab) ## THINGS TO NOTICE (suggested things for the user to notice while running the model) ## THINGS TO TRY (suggested things for the user to try to do (move sliders, switches, etc.) with the model) ## EXTENDING THE MODEL (suggested things to add or change in the Code tab to make the model more complicated, detailed, accurate, etc.) ## NETLOGO FEATURES (interesting or unusual features of NetLogo that the model uses, particularly in the Code tab; or where workarounds were needed for missing features) ## RELATED MODELS (models in the NetLogo Models Library and elsewhere which are of related interest) ## CREDITS AND REFERENCES (a reference to the model's URL on the web if it has one, as well as any other necessary credits, citations, and links) @#$#@#$#@ default true 0 Polygon -7500403 true true 150 5 40 250 150 205 260 250 airplane true 0 Polygon -7500403 true true 150 0 135 15 120 60 120 105 15 165 15 195 120 180 135 240 105 270 120 285 150 270 180 285 210 270 165 240 180 180 285 195 285 165 180 105 180 60 165 15 arrow true 0 Polygon -7500403 true true 150 0 0 150 105 150 105 293 195 293 195 150 300 150 box false 0 Polygon -7500403 true true 150 285 285 225 285 75 150 135 Polygon -7500403 true true 150 135 15 75 150 15 285 75 Polygon -7500403 true true 15 75 15 225 150 285 150 135 Line -16777216 false 150 285 150 135 Line -16777216 false 150 135 15 75 Line -16777216 false 150 135 285 75 bst false 0 Line -7500403 true 150 45 120 135 Line -7500403 true 150 45 180 135 Line -7500403 true 150 45 150 150 Line -7500403 true 180 135 150 150 Line -7500403 true 120 135 150 150 Line -7500403 true 120 135 150 120 Line -7500403 true 150 120 180 135 Line -7500403 true 135 90 150 105 Line -7500403 true 150 105 165 90 Line -7500403 true 135 45 165 45 Line -7500403 true 165 30 165 45 Line -7500403 true 135 30 135 45 bug true 0 Circle -7500403 true true 96 182 108 Circle -7500403 true true 110 127 80 Circle -7500403 true true 110 75 80 Line -7500403 true 150 100 80 30 Line -7500403 true 150 100 220 30 butterfly true 0 Polygon -7500403 true true 150 165 209 199 225 225 225 255 195 270 165 255 150 240 Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240 Polygon -7500403 true true 139 148 100 105 55 90 25 90 10 105 10 135 25 180 40 195 85 194 139 163 Polygon -7500403 true true 162 150 200 105 245 90 275 90 290 105 290 135 275 180 260 195 215 195 162 165 Polygon -16777216 true false 150 255 135 225 120 150 135 120 150 105 165 120 180 150 165 225 Circle -16777216 true false 135 90 30 Line -16777216 false 150 105 195 60 Line -16777216 false 150 105 105 60 car false 0 Polygon -7500403 true true 300 180 279 164 261 144 240 135 226 132 213 106 203 84 185 63 159 50 135 50 75 60 0 150 0 165 0 225 300 225 300 180 Circle -16777216 true false 180 180 90 Circle -16777216 true false 30 180 90 Polygon -16777216 true false 162 80 132 78 134 135 209 135 194 105 189 96 180 89 Circle -7500403 true true 47 195 58 Circle -7500403 true true 195 195 58 circle false 0 Circle -7500403 true true 0 0 300 circle 2 false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 cow false 0 Polygon -7500403 true true 200 193 197 249 179 249 177 196 166 187 140 189 93 191 78 179 72 211 49 209 48 181 37 149 25 120 25 89 45 72 103 84 179 75 198 76 252 64 272 81 293 103 285 121 255 121 242 118 224 167 Polygon -7500403 true true 73 210 86 251 62 249 48 208 Polygon -7500403 true true 25 114 16 195 9 204 23 213 25 200 39 123 cylinder false 0 Circle -7500403 true true 0 0 300 dot false 0 Circle -7500403 true true 90 90 120 face happy false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 255 90 239 62 213 47 191 67 179 90 203 109 218 150 225 192 218 210 203 227 181 251 194 236 217 212 240 face neutral false 0 Circle -7500403 true true 8 7 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Rectangle -16777216 true false 60 195 240 225 face sad false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 168 90 184 62 210 47 232 67 244 90 220 109 205 150 198 192 205 210 220 227 242 251 229 236 206 212 183 fish false 0 Polygon -1 true false 44 131 21 87 15 86 0 120 15 150 0 180 13 214 20 212 45 166 Polygon -1 true false 135 195 119 235 95 218 76 210 46 204 60 165 Polygon -1 true false 75 45 83 77 71 103 86 114 166 78 135 60 Polygon -7500403 true true 30 136 151 77 226 81 280 119 292 146 292 160 287 170 270 195 195 210 151 212 30 166 Circle -16777216 true false 215 106 30 flag false 0 Rectangle -7500403 true true 60 15 75 300 Polygon -7500403 true true 90 150 270 90 90 30 Line -7500403 true 75 135 90 135 Line -7500403 true 75 45 90 45 flower false 0 Polygon -10899396 true false 135 120 165 165 180 210 180 240 150 300 165 300 195 240 195 195 165 135 Circle -7500403 true true 85 132 38 Circle -7500403 true true 130 147 38 Circle -7500403 true true 192 85 38 Circle -7500403 true true 85 40 38 Circle -7500403 true true 177 40 38 Circle -7500403 true true 177 132 38 Circle -7500403 true true 70 85 38 Circle -7500403 true true 130 25 38 Circle -7500403 true true 96 51 108 Circle -16777216 true false 113 68 74 Polygon -10899396 true false 189 233 219 188 249 173 279 188 234 218 Polygon -10899396 true false 180 255 150 210 105 210 75 240 135 240 house false 0 Rectangle -7500403 true true 45 120 255 285 Rectangle -16777216 true false 120 210 180 285 Polygon -7500403 true true 15 120 150 15 285 120 Line -16777216 false 30 120 270 120 leaf false 0 Polygon -7500403 true true 150 210 135 195 120 210 60 210 30 195 60 180 60 165 15 135 30 120 15 105 40 104 45 90 60 90 90 105 105 120 120 120 105 60 120 60 135 30 150 15 165 30 180 60 195 60 180 120 195 120 210 105 240 90 255 90 263 104 285 105 270 120 285 135 240 165 240 180 270 195 240 210 180 210 165 195 Polygon -7500403 true true 135 195 135 240 120 255 105 255 105 285 135 285 165 240 165 195 line true 0 Line -7500403 true 150 0 150 300 line half true 0 Line -7500403 true 150 0 150 150 mob true 0 Rectangle -7500403 false true 165 30 165 60 Line -7500403 true 165 45 165 75 Rectangle -7500403 false true 105 105 120 90 Rectangle -7500403 false true 105 90 165 225 Rectangle -13840069 true false 105 240 120 255 Rectangle -2674135 true false 150 240 165 255 Rectangle -7500403 false true 90 75 180 255 pentagon false 0 Polygon -7500403 true true 150 15 15 120 60 285 240 285 285 120 person false 0 Circle -7500403 true true 110 5 80 Polygon -7500403 true true 105 90 120 195 90 285 105 300 135 300 150 225 165 300 195 300 210 285 180 195 195 90 Rectangle -7500403 true true 127 79 172 94 Polygon -7500403 true true 195 90 240 150 225 180 165 105 Polygon -7500403 true true 105 90 60 150 75 180 135 105 plant false 0 Rectangle -7500403 true true 135 90 165 300 Polygon -7500403 true true 135 255 90 210 45 195 75 255 135 285 Polygon -7500403 true true 165 255 210 210 255 195 225 255 165 285 Polygon -7500403 true true 135 180 90 135 45 120 75 180 135 210 Polygon -7500403 true true 165 180 165 210 225 180 255 120 210 135 Polygon -7500403 true true 135 105 90 60 45 45 75 105 135 135 Polygon -7500403 true true 165 105 165 135 225 105 255 45 210 60 Polygon -7500403 true true 135 90 120 45 150 15 180 45 165 90 sheep false 15 Circle -1 true true 203 65 88 Circle -1 true true 70 65 162 Circle -1 true true 150 105 120 Polygon -7500403 true false 218 120 240 165 255 165 278 120 Circle -7500403 true false 214 72 67 Rectangle -1 true true 164 223 179 298 Polygon -1 true true 45 285 30 285 30 240 15 195 45 210 Circle -1 true true 3 83 150 Rectangle -1 true true 65 221 80 296 Polygon -1 true true 195 285 210 285 210 240 240 210 195 210 Polygon -7500403 true false 276 85 285 105 302 99 294 83 Polygon -7500403 true false 219 85 210 105 193 99 201 83 square false 0 Rectangle -7500403 true true 30 30 270 270 square 2 false 0 Rectangle -7500403 true true 30 30 270 270 Rectangle -16777216 true false 60 60 240 240 star false 0 Polygon -7500403 true true 151 1 185 108 298 108 207 175 242 282 151 216 59 282 94 175 3 108 116 108 target false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 Circle -7500403 true true 60 60 180 Circle -16777216 true false 90 90 120 Circle -7500403 true true 120 120 60 tree false 0 Circle -7500403 true true 118 3 94 Rectangle -6459832 true false 120 195 180 300 Circle -7500403 true true 65 21 108 Circle -7500403 true true 116 41 127 Circle -7500403 true true 45 90 120 Circle -7500403 true true 104 74 152 triangle false 0 Polygon -7500403 true true 150 30 15 255 285 255 triangle 2 false 0 Polygon -7500403 true true 150 30 15 255 285 255 Polygon 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-7500403 true true 119 75 179 75 209 101 224 135 220 225 175 261 128 261 81 224 74 135 88 99 wheel false 0 Circle -7500403 true true 3 3 294 Circle -16777216 true false 30 30 240 Line -7500403 true 150 285 150 15 Line -7500403 true 15 150 285 150 Circle -7500403 true true 120 120 60 Line -7500403 true 216 40 79 269 Line -7500403 true 40 84 269 221 Line -7500403 true 40 216 269 79 Line -7500403 true 84 40 221 269 wolf false 0 Polygon -16777216 true false 253 133 245 131 245 133 Polygon -7500403 true true 2 194 13 197 30 191 38 193 38 205 20 226 20 257 27 265 38 266 40 260 31 253 31 230 60 206 68 198 75 209 66 228 65 243 82 261 84 268 100 267 103 261 77 239 79 231 100 207 98 196 119 201 143 202 160 195 166 210 172 213 173 238 167 251 160 248 154 265 169 264 178 247 186 240 198 260 200 271 217 271 219 262 207 258 195 230 192 198 210 184 227 164 242 144 259 145 284 151 277 141 293 140 299 134 297 127 273 119 270 105 Polygon -7500403 true true -1 195 14 180 36 166 40 153 53 140 82 131 134 133 159 126 188 115 227 108 236 102 238 98 268 86 269 92 281 87 269 103 269 113 x false 0 Polygon -7500403 true true 270 75 225 30 30 225 75 270 Polygon -7500403 true true 30 75 75 30 270 225 225 270 @#$#@#$#@ NetLogo 5.1.0 @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ default 0.0 -0.2 0 0.0 1.0 0.0 1 1.0 0.0 0.2 0 0.0 1.0 link direction true 0 Line -7500403 true 150 150 90 180 Line -7500403 true 150 150 210 180 @#$#@#$#@ 0 @#$#@#$#@