Innovative Transport Protocols

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Innovative Transport Protocols

• Current Students
• Armando Caro
• Jana Iyengar
• Ryan Bickhart
• Mark Hufe
• Brad Durandetta
• Preethi Natarajan

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Internet Protocol Stack
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Innovative Transport Protocols
Application
Application
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How to design a new application ? Current
environment On top of TCP
Application
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Designing a new application Research On top of
ideal transport protocol
Application
menu of transport protocols/services
TCP
Transport Layer
SCTP
UDP
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Stream Control Transmission Protocol (SCTP)
Multihoming

• Key Research Problems
• fault tolerance
• concurrent multipath transfer (load sharing)

Why is multihoming new and exciting? -
multihoming is just now happening on wide scale
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Multi-streaming
voice
video
tactical info (e.g., gps, supply levels)
images (e.g., maps, radar)
Issues synchronization, congestion control, flow
control
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Multistreaming
sender app
receiver app
s4
s2
s1
s3
s1
s2
s3
s4
multistreaming transport
IP
DLL
PHY
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Unordered / Partial Order
(RFC1693 An Extension to TCP Partial Order
Service Connolly, Amer, Conrad, Nov 1994)
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Undo or Expire
Real time game
Real time game
position updates
transport
transport
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Controlled / partial reliability
10 second video 5 frames/sec
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Reliable time critical
unmanned vehicle

• Commands to robot
• must be reliable AND delivered within a bounded
  delay
• Mechanisms
• Send multiple copies (ie retransmit before loss
  to increase probability of receipt)
• Send multiple copies out different interfaces
  (assuming multihoming)
• Use Forward Error Correction (FEC)

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Higher security

• avoid denial-of-service attacks, mid-stream
  attacks

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Army Research Lab (ARL)Collaborative Technology
Alliance (CTA)in Communications and Networks

• 5 (8) years
• 44M (76M)
• Army Scientists
• Industry
• Telcordia
• BAE Systems
• General Dynamics
• McAfee
• BBN
• Primary Universities
• Delaware
• Maryland
• Princeton
• Johns Hopkins
• Georgia Tech
• Minnesota
• Morgan State
• CCNY
• Clark Atlanta

and Cisco Systems, IncUniversity Research
Program