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Intro

Intro. T-Systems Nova GmbH Broadband Wireless Local Area Networks. Frank Christahl. Andreas Huber. Labor für Telekommunikation. Gliederung des Vortrags. Vorstellung Demonstrator Allgemeines zum Netzwerksimulator. HMWK Projekt. IP based Mobility in Wireless LANs

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Intro

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  1. Intro T-Systems Nova GmbH Broadband Wireless Local Area Networks Frank Christahl Andreas Huber

  2. Labor für Telekommunikation Gliederung des Vortrags • Vorstellung Demonstrator • Allgemeines zum Netzwerksimulator

  3. HMWK Projekt • IP based Mobility in Wireless LANs • Implementierung und Untersuchung der Protokolle mit NS • Verifizierung der Ergebnisse mit einem Meßaufbau • Projektzeitraum: • Oktober 2001 bis Oktober 2004 • Teilfinanzierung durch das HMWK

  4. Der Network Simulator • Freie Quellen • Objekt-orientiert (C++, OTcl) • Modularer Aufbau, Erweiterbar • Viele Protokolle implementiert • Wired and wireless • Konfiguration in Tcl / OTcl

  5. Auswertung mit NS NAM-Editor .nam NAM Text-Editor File Packet-Loss Delays Jitter Percentile etc. .tr NS A.- NS Tools File Tcl File .gra X Graph File z.B. Durchsatz

  6. Simulation: Mobile IP

  7. Durchsatz

  8. Auswertung der Tracedatei Mobile Node über Home Agent Mobile Node über Foreign Agent The number of packets transmitted T = 707. The number of packets received R = 688. The number of packets lost L = 19. 2.68 % of all packets of flow 0 sent from node 0 to node 10 were lost. Min. Delay for flow 0 = 41 ms Max. Delay for flow 0 = 73.208 ms Delay mean for flow 0 = 54.2583 ms Jitter for flow 0 = 2.18758 ms 90 % of the Delays are <= 54.3602 ms 95 % of the Delays are <= 54.76 ms 99 % of the Delays are <= 57.208 ms The number of packets transmitted T = 239. The number of packets received R = 219. The number of packets lost L = 20. 8.36 % of all packets of flow 0 sent from node 0 to node 10 were lost. Min. Delay for flow 0 = 66.1998 ms Max. Delay for flow 0 = 70.488 ms Delay mean for flow 0 = 67.4539 ms Jitter for flow 0 = 1.88074 ms 90 % of the Delays are <= 70.2801 ms 95 % of the Delays are <= 70.2801 ms 99 % of the Delays are <= 70.3917 ms

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