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Kommunikatsiooniteenuste arendus IRT0080

Kommunikatsiooniteenuste arendus IRT0080. Loeng 9/2008 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee. Military Response. Mobile Computing: Why?. Nokia E61. Home Security. Gambling. Home medical care. E-learning. Sports. Streaming Movies.

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Kommunikatsiooniteenuste arendus IRT0080

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  1. Kommunikatsiooniteenuste arendusIRT0080 Loeng 9/2008 Avo Otstelekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

  2. Military Response Mobile Computing: Why? Nokia E61 Home Security Gambling Home medical care E-learning Sports Streaming Movies

  3. Markets for IP Mobility [Source:Cisco]

  4. Mobile Wireless Devices Laptop Smartphone Media Player Palmtop Digital Camera Mobile Router Personal Digital Assistant Notebook Pager Gaming Console

  5. No mobility High mobility Moderate mobility mobile user, passing through multiple access point while maintaining ongoing connections (like cell phone) mobile user, connecting/ disconnecting from network using DHCP. mobile wireless user, using same access point Mobility Classification Protocols

  6. Mobility Global Macro Micro MIP (1996) Hierarchical MIP (1996) Cellular IP (1998) Hawaii (1999) Dynamic Mobility Agent (2000) TeleMIP (2000) Time (evolutionary path) MIPv6 (2001) TMIP (2001) HMIPv6 (2001) Intra-subnet Inter-domain Intra-domain Mobility Classification Protocols

  7. Tavalahendus

  8. Lahendus multihop

  9. Routing Protocols for MANETS Unicast-Routing Protocol for MANET (Topology-based) CBRP Table-Driven/ Proactive Hybrid On-Demand-driven/Reactive Clusterbased/ Hierarchical Distance- Vector Link- State ZRP DSR AODV TORA LANMAR CEDAR DSDV OLSR TBRPF FSR STAR MANET: Mobile Ad hoc Network (IETF working group)

  10. Proactive vs Reactive Routing • Proactive Routing Protocols (DSDV, OLSR) • + Routes to all reachable nodes in the network available. • + Minimal initial delay for application. • - Larger signalling traffic and power consumption. • Reactive Routing Protocols (DSR, CBR etc) • + Smaller signalling traffic and power consumption. • - A long delay for application when no route to the destination available

  11. Proactive protocols Determine routes independent of traffic pattern Traditional link-state and distance-vector routing protocols are proactive Examples: DSDV (Dynamic sequenced distance-vector) OLSR (Optimized Link State Routing) Reactive protocols Maintain routes only if needed Examples: DSR (Dynamic source routing) AODV (on-demand distance vector) Hybrid protocols Example: Zone Routing Protocol (intra-zone: proactive; inter-zone: on-demand) Routing Protocols: Overview

  12. Lingid (1) http://en.wikipedia.org/wiki/Ad_hoc_routing_protocol_list http://www.cs.cmu.edu/~dmaltz/dsr.html http://en.wikipedia.org/wiki/AODV http://www.olsr.org/?q=about http://www.ietf.org/rfc/rfc3626.txt www.cs.binghamton.edu/~nael/cs527/notes/adhoc-routing1.pp

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