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Traffic equations

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are equations that describe the mean arrival rate of traffic, allowing the arrival rates at individual nodes to be determined. Mitrani notes "if the network is stable, the traffic equations are valid and can be solved."
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to this equation, so the mean arrival rates at each of the nodes can be determined given knowledge of the external arrival rates
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is surely non-singular as otherwise in the long run the network would become empty.
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arrivals from each of the other nodes on the network. If external arrivals at node
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there are no external arrivals, so the traffic equations take the form (for 
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arrivals (that is, arrivals from outside the network directly placed onto node
677: 753: 215:{\displaystyle \lambda _{i}=\gamma _{i}+\sum _{j=1}^{m}p_{ji}\lambda _{j}.} 525:
Performance Modelling of Communication Networks and Computer Architectures
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article, jobs travel among the nodes following a fixed routing matrix.
546: 550: 443:{\displaystyle \lambda _{i}=\sum _{j=1}^{m}p_{ji}\lambda _{j}.} 379: 315: 288: 238: 138: 94: 47: 945: 904: 871: 808: 767: 712: 686: 584: 522: 442: 328: 301: 269: 214: 107: 60: 562: 8: 282:and there is a unique solution of unknowns 569: 555: 547: 472:Mitrani, I. (1997). "Queueing networks". 467: 465: 431: 418: 408: 397: 384: 378: 320: 314: 293: 287: 263: 237: 203: 190: 180: 169: 156: 143: 137: 99: 93: 52: 46: 270:{\displaystyle \lambda (I-P)=\gamma \,,} 461: 364: = 1, 2, ...,  123: = 1, 2, ...,  119:, the traffic equations are, (for  20:, a discipline within the mathematical 227:This can be written in matrix form as 72:in the network is given by the sum of 7: 14: 1016: 1015: 254: 242: 1: 846:Flow-equivalent server method 927:Adversarial queueing network 816:Continuous-time Markov chain 482:10.1017/CBO9781139173087.005 302:{\displaystyle \lambda _{i}} 115:, and the routing matrix is 61:{\displaystyle \lambda _{i}} 889:Heavy traffic approximation 634:Pollaczek–Khinchine formula 521:; Patel, Naresh M. (1992). 329:{\displaystyle \gamma _{i}} 108:{\displaystyle \gamma _{i}} 1056: 1013: 894:Reflected Brownian motion 699:Markovian arrival process 917:Layered queueing network 704:Rational arrival process 41:, the mean arrival rate 1005:Teletraffic engineering 800:Shortest remaining time 474:Probabilistic Modelling 1000:Scheduling (computing) 639:Matrix analytic method 444: 413: 330: 303: 271: 216: 185: 109: 62: 831:Product-form solution 732:Gordon–Newell theorem 694:Poisson point process 585:Single queueing nodes 445: 393: 358:Gordon–Newell network 352:Gordon–Newell network 331: 304: 272: 217: 165: 110: 63: 22:theory of probability 858:Decomposition method 504:As explained in the 476:. pp. 122–155. 377: 313: 286: 236: 136: 92: 45: 990:Pipeline (software) 970:Flow control (data) 965:Erlang distribution 947:Information systems 737:Mean value analysis 344: −  995:Quality of service 980:Network congestion 841:Quasireversibility 821:Kendall's notation 529:. Addison-Wesley. 519:Harrison, Peter G. 440: 326: 299: 267: 212: 105: 58: 1027: 1026: 985:Network scheduler 884:Mean-field theory 795:Shortest job next 785:Processor sharing 742:Buzen's algorithm 725:Traffic equations 713:Queueing networks 687:Arrival processes 661:Kingman's formula 26:traffic equations 1047: 1019: 1018: 836:Balance equation 768:Service policies 666:Lindley equation 571: 564: 557: 548: 541: 540: 528: 515: 509: 502: 496: 495: 469: 449: 447: 446: 441: 436: 435: 426: 425: 412: 407: 389: 388: 335: 333: 332: 327: 325: 324: 308: 306: 305: 300: 298: 297: 276: 274: 273: 268: 221: 219: 218: 213: 208: 207: 198: 197: 184: 179: 161: 160: 148: 147: 114: 112: 111: 106: 104: 103: 67: 65: 64: 59: 57: 56: 1055: 1054: 1050: 1049: 1048: 1046: 1045: 1044: 1040:Queueing theory 1030: 1029: 1028: 1023: 1009: 941: 900: 867: 853:Arrival theorem 804: 763: 720:Jackson network 708: 682: 673:Fork–join queue 612:Burke's theorem 580: 578:Queueing theory 575: 545: 544: 537: 517: 516: 512: 506:Jackson network 503: 499: 492: 471: 470: 463: 458: 427: 414: 380: 375: 374: 354: 336:and the matrix 316: 311: 310: 289: 284: 283: 234: 233: 199: 186: 152: 139: 134: 133: 95: 90: 89: 80:, if any), and 48: 43: 42: 39:Jackson network 35: 33:Jackson network 18:queueing theory 12: 11: 5: 1053: 1051: 1043: 1042: 1032: 1031: 1025: 1024: 1014: 1011: 1010: 1008: 1007: 1002: 997: 992: 987: 982: 977: 972: 967: 962: 957: 951: 949: 943: 942: 940: 939: 934: 929: 924: 922:Polling system 919: 914: 908: 906: 902: 901: 899: 898: 897: 896: 886: 881: 875: 873: 872:Limit theorems 869: 868: 866: 865: 860: 855: 850: 849: 848: 843: 838: 828: 823: 818: 812: 810: 806: 805: 803: 802: 797: 792: 787: 782: 777: 771: 769: 765: 764: 762: 761: 756: 751: 746: 745: 744: 739: 729: 728: 727: 716: 714: 710: 709: 707: 706: 701: 696: 690: 688: 684: 683: 681: 680: 675: 670: 669: 668: 663: 653: 648: 643: 642: 641: 636: 626: 621: 616: 615: 614: 604: 599: 594: 588: 586: 582: 581: 576: 574: 573: 566: 559: 551: 543: 542: 535: 510: 497: 490: 460: 459: 457: 454: 453: 452: 451: 450: 439: 434: 430: 424: 421: 417: 411: 406: 403: 400: 396: 392: 387: 383: 353: 350: 323: 319: 296: 292: 280: 279: 278: 277: 266: 262: 259: 256: 253: 250: 247: 244: 241: 225: 224: 223: 222: 211: 206: 202: 196: 193: 189: 183: 178: 175: 172: 168: 164: 159: 155: 151: 146: 142: 102: 98: 55: 51: 34: 31: 13: 10: 9: 6: 4: 3: 2: 1052: 1041: 1038: 1037: 1035: 1022: 1012: 1006: 1003: 1001: 998: 996: 993: 991: 988: 986: 983: 981: 978: 976: 975:Message queue 973: 971: 968: 966: 963: 961: 960:Erlang (unit) 958: 956: 953: 952: 950: 948: 944: 938: 937:Retrial queue 935: 933: 930: 928: 925: 923: 920: 918: 915: 913: 910: 909: 907: 903: 895: 892: 891: 890: 887: 885: 882: 880: 877: 876: 874: 870: 864: 861: 859: 856: 854: 851: 847: 844: 842: 839: 837: 834: 833: 832: 829: 827: 824: 822: 819: 817: 814: 813: 811: 807: 801: 798: 796: 793: 791: 788: 786: 783: 781: 778: 776: 773: 772: 770: 766: 760: 757: 755: 752: 750: 749:Kelly network 747: 743: 740: 738: 735: 734: 733: 730: 726: 723: 722: 721: 718: 717: 715: 711: 705: 702: 700: 697: 695: 692: 691: 689: 685: 679: 676: 674: 671: 667: 664: 662: 659: 658: 657: 654: 652: 649: 647: 644: 640: 637: 635: 632: 631: 630: 627: 625: 622: 620: 617: 613: 610: 609: 608: 605: 603: 600: 598: 595: 593: 590: 589: 587: 583: 579: 572: 567: 565: 560: 558: 553: 552: 549: 538: 536:0-201-54419-9 532: 527: 526: 520: 514: 511: 507: 501: 498: 493: 491:9781139173087 487: 483: 479: 475: 468: 466: 462: 455: 437: 432: 428: 422: 419: 415: 409: 404: 401: 398: 394: 390: 385: 381: 373: 372: 371: 370: 369: 367: 363: 359: 351: 349: 347: 343: 340:. The matrix 339: 321: 317: 294: 290: 264: 260: 257: 251: 248: 245: 239: 232: 231: 230: 229: 228: 209: 204: 200: 194: 191: 187: 181: 176: 173: 170: 166: 162: 157: 153: 149: 144: 140: 132: 131: 130: 129: 128: 126: 122: 118: 100: 96: 87: 83: 79: 75: 71: 68:at each node 53: 49: 40: 32: 30: 27: 23: 19: 932:Loss network 863:Beneš method 826:Little's law 809:Key concepts 759:BCMP network 724: 524: 513: 500: 473: 365: 361: 355: 345: 341: 337: 281: 226: 124: 120: 116: 85: 81: 77: 73: 69: 36: 25: 15: 955:Data buffer 912:Fluid queue 879:Fluid limit 790:Round-robin 656:G/G/1 queue 651:G/M/1 queue 646:M/G/k queue 629:M/G/1 queue 624:M/M/∞ queue 619:M/M/c queue 607:M/M/1 queue 602:M/D/c queue 597:M/D/1 queue 592:D/M/1 queue 905:Extensions 678:Bulk queue 88:have rate 754:G-network 429:λ 395:∑ 382:λ 318:γ 291:λ 261:γ 249:− 240:λ 201:λ 167:∑ 154:γ 141:λ 97:γ 50:λ 1034:Category 1021:Category 82:internal 74:external 533:  488:  456:Notes 356:In a 37:In a 780:LIFO 775:FIFO 531:ISBN 486:ISBN 478:doi 16:In 1036:: 484:. 464:^ 368:) 127:) 24:, 570:e 563:t 556:v 539:. 494:. 480:: 438:. 433:j 423:i 420:j 416:p 410:m 405:1 402:= 399:j 391:= 386:i 366:m 362:i 346:P 342:I 338:P 322:i 295:i 265:, 258:= 255:) 252:P 246:I 243:( 210:. 205:j 195:i 192:j 188:p 182:m 177:1 174:= 171:j 163:+ 158:i 150:= 145:i 125:m 121:i 117:P 101:i 86:i 78:i 70:i 54:i

Index

queueing theory
theory of probability
Jackson network
Gordon–Newell network


doi
10.1017/CBO9781139173087.005
ISBN
9781139173087
Jackson network
Harrison, Peter G.
Performance Modelling of Communication Networks and Computer Architectures
ISBN
0-201-54419-9
v
t
e
Queueing theory
D/M/1 queue
M/D/1 queue
M/D/c queue
M/M/1 queue
Burke's theorem
M/M/c queue
M/M/∞ queue
M/G/1 queue
Pollaczek–Khinchine formula
Matrix analytic method
M/G/k queue

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