Network Layer

• Deployed internets will be comprised of fixed (e.g. landers) and mobile elements

  • Mobile elements can be slow-movers

    • Rovers
    • Balloons
  • Mobile elements can be fast-movers

    • Low orbiters
    • Powered ìAirîcraft
  • Routing protocols must be able to constitute and maintain an ad hoc network with all of these elements
  • Must efficiently adapt to changes in available link resources -- ìvertical handoffs?î

• Must propagate signals of current conditions issued by link layer elements

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