an assessment of mobile ad hoc network manet issues n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
An Assessment of Mobile Ad-Hoc Network (MANET) Issues PowerPoint Presentation
Download Presentation
An Assessment of Mobile Ad-Hoc Network (MANET) Issues

Loading in 2 Seconds...

play fullscreen
1 / 9

An Assessment of Mobile Ad-Hoc Network (MANET) Issues - PowerPoint PPT Presentation


  • 120 Views
  • Uploaded on

An Assessment of Mobile Ad-Hoc Network (MANET) Issues. Jerry Usery CS 526 May 12 th , 2008. MANET Issues - Overview. History Uses Technical Concerns DSR and AODV Routing Security. MANET Issues - History. Three generations of ad-hoc network systems 1 – 1972, PRNET ALOHA, CSMA

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'An Assessment of Mobile Ad-Hoc Network (MANET) Issues' - lynne


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
manet issues overview
MANET Issues - Overview
  • History
  • Uses
  • Technical Concerns
  • DSR and AODV Routing
  • Security
manet issues history
MANET Issues - History
  • Three generations of ad-hoc network systems
    • 1 – 1972, PRNET
      • ALOHA, CSMA
    • 2 – 1980s, SURAN
      • Packet-switched network
      • No infrastructure
      • Increased radio performance
    • 3 – Current generation
manet issues uses
MANET Issues - Uses
  • Growing need
    • Emergency and rescue operations
    • Disaster relief efforts
    • Military networks
  • Flexibility and speed of set-up is key
manet issues technical concerns
MANET Issues – Technical Concerns
  • Routing has been problematic
    • Existing Internet protocols intended for fixed infrastructure
    • Limited success with conventional protocols at each router
      • Bandwidth, power constraints, topology changes and SECURITY concerns
    • Link state protocols (bandwidth, reliability issues)
    • On-demand protocols (frequent topology changes)
manet issues dsr and aodv routing
MANET Issues – DSR and AODV Routing
  • DSR
    • Simple, specifically designed for MANETs
    • Implemented on several testbeds
    • Connected to Internet
    • Route discovery & maintenance
    • Scales automatically
    • Allows multiple routes to any node
    • Designed for approximately 200 nodes, unicast IPv4 packets
manet issues dsr and aodv routing cont
MANET Issues – DSR and AODV Routing (Cont)
  • AODV
    • Experimental protocol
    • Rapid adaptation to dynamic link changes
    • Low use of the network
    • Low memory overhead and processing
    • Finds unicast routes within the network
    • Uses destination sequence numbers (no loops)
    • Nodes notified when link is broken
    • IPv6 packets
manet issues security
MANET Issues – Security
  • Major Issue with as needed connections
  • Client-server structure does not apply
  • Availability, confidentiality, integrity, authentication, non-repudiation all face challenges
  • Dynamic security solution required
  • External attacks
    • Active - Erroneous routes, replaying old information, false route queries, distortion of route information
    • Passive - Eavesdropping data, analyzing traffic
  • Internal attacks
    • Compromised nodes can use standard security to protect their attacks
    • Valid signatures must be validated
manet issues
MANET Issues
  • Questions?