wiki:DtnUseCases

DTN Use Cases

Space Systems Communications

  • International Space Station (ISS) Tracking and Data Relay Satellite (TDRS) availability, bandwidth and latency
  • Deep space communications (One-­Way Light Time (OWLT) from Earth to Mars ~4min minimum)
  • Space system support for isolated ground systems (data exchanges only possible during satellite over-­flights)
  • GEO satellite communications for long-delay; frequent disruptions (replaces traditional Peformance Enhancing Proxies (PEPs))
  • LEO satellite communications with scheduled link intermittency which can take advantage of both DTN scheduled contacts and resilience to disruption.

Need:

  • BP Compressed format for resource-­constrained devices
  • BP End-to-end integrity assurance
  • Streamlined Security
  • Security Key Management

Unmanned Air Systems (UAS) in Integrated Air Space

  • Unmanned Air Systems (UAS) will operate in same airspace as civil aviation (e.g., FAA Modernization and Reform Act of 2012)
  • RF communications occasionally subject to disruption (e.g., terrain features, atmospheric conditions, signal fading, etc.)
  • Operation in remote regions can result in extended outages
  • Internet protocols alone (e.g., TCP/IP) insufficient to assure safety of flight

Need:

  • BP and SBSP Improvements
  • Security Key Management
  • Dynamic Routing
  • Neighbor and Contact Discovery

Vehicular Delay Tolerant Networks

  • Vehicular communications in special-purpose applications, including public transportation, commercial fleets, law enforcement, expeditionary forces, etc.
  • Vehicles communicate with each other for road safety, traffic monitoring, navigation, information sharing, etc.
  • Infrequent transmission opportunities due to intermittent signals, sparse traffic conditions, terrain features etc.
  • Short contacts between vehicles passing

Need:

  • BP and SBSP Improvements
  • Security Key Management
  • Dynamic Routing
  • Neighbor and Contact Discovery

Disaster Response and Humanitarian Aid

  • Communications infrastructure frequently impaired or decimated
  • Response teams use portable or vehicular radio systems; “Reachback” via SATCOM; terrestrial links-of­-opportunity
  • Long delays when connected; extended periods of disruption
  • Loss due to attrition, battery lifetime, sensor network duty cycles, etc.
  • Ad‐hoc approaches often result in communication failures

Need:

  • BP and SBSP Improvements
  • Security Key Management
  • Network Management
  • Neighbor and Contact Discovery

Unmanned Underwater Vehicles (UUV)

  • UUV networking still in exploratory phase
  • Speed of sound underwater is only 1.5 km/sec; data rates are low
  • Long‐endurance UUV operations (days/weeks/months)
  • Delay-tolerant multi-hopping between mobile UUVs
  • Message relaying based on scheduled or unplanned windows of opportunity
  • Secure store, carry and forward of data objects larger than packets

Need:

  • BP Compressed format for resource‐constrained devices
  • Streamlined Security
  • Neighbor and Contact Discovery

Civil Aviation

  • Global Aeronautical Telecommunications Network (ATN) is low delay/disruption and can use traditional non-DTN protocols
  • Air Traffic Control (ATC), Airline Operations Control (AOC) track aircraft over ATN in all phases of flight in real time.
  • System‐Wide Information Management (SWIM) - significant delays possible
  • Aviation data links can experience disruption; some may not be available during all phases of flight, and periods of complete data link outages possible. DTN may be applicable.

Need:

  • BP End‐to‐end integrity assurance
  • Streamlined Security
  • Security Key Management

Summary

  • Many use cases, with more on the way
  • Of interest to many industry sectors
  • Bundle Protocol and security as enablers
  • DTNWG provides framework for moving the technology forward
Last modified 8 years ago Last modified on 27/02/15 20:48:44