- 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) 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 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
- 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
- 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
- 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
The content of this page was last updated on 2015-02-27. It was migrated from the old Trac wiki on 2023-01-24.