Communications in Aeronautical Networks Chiara Caiazza, Antonio - PowerPoint PPT Presentation

Simulating LIS ISP-Based Multilink Communications in Aeronautical Networks Chiara Caiazza, Antonio Virdis, Giovanni Stea University of Pisa

Outline • Overview of aeronautical communications • Handover and Multilink • LISP protocol • Performance evaluation • Conclusions

Aeronautical communications • Future Aircraft Communication Mobile network LDACS Network Infrastructure (FCI) Satcom network Ground end system Core network

Multilink Concept • How do we select the link? Aircraft Mobile network LDACS Network • How do we enforce this selection from a communication standpoint? Satcom network Ground end system Core network

Locator/Identifier Separation Protocol (LISP) EID Aircraft Mobile network LISP routers LDACS Network ? Satcom network Ground end system Core network

Registration: EID to RLOC EID EID RLOC Prio Aircraft X Y 11 Mobile network LDACS Network Mapping Server Satcom network Ground end system Core network

Map Request EID EID RLOC Prio Aircraft X Y 11 Mobile network LDACS Network Mapping Server ? Req EID X Satcom network Ground end system Mapping EID X -> RLOC Y Core network

Data Transmission EID EID RLOC Prio Aircraft X Y 11 Mobile network LDACS Network Mapping Server Satcom network RLOC EID X Ground end system Core network

Motivation • Studying Aeronautical communications in a Multilink environment • Evaluating the impact of communication protocols in terms of: • System overhead (number of additional messages) • System load (computation at critical nodes, storage capacity) • Extensible to: • Multiple DataLinks • Multiple Applications and Communication Services

SAPIENT Simulator: Modeling the Communication Network A/C Domain Airborne Application Terrestrial DL Satellite DL receiver receiver DL Domain Terrestrial DL Satellite DL Service Provider Service Provider Multi-link Connection Manager Core Network Domain ATN/IPS (SWIM based) Application Domain RPAS pilot Ground Application ATM/AOC (e.g. C2) (e.g. ATN)

SAPIENT Simulator SATCOM Network Core Ground A/C Network Node Terrestrial Network

Example: Terrestrial DL (LDACS) SATCOM from/to Network upper layers UT UT LDACS Core Ground A/C Air Interface Network Node Channel Segment Model IP2LDACS Terrestrial GS GS GS Network Pathloss Model AC-R AC-R AC-R L2 Ground AG-R AG-R Segment L1 GG-R from/to LDACS LDACS air segment CME Oracle from/to Core

LDACS network Ground end system Core network

Simulation Scenario

System Load: stored entries 300 Indirect mode 250 Direct mode Direct mode w/ push msgs Number of entries 200 150 100 50 0 AC = 10 30 50

System Load: # of messages Aircraft Mobile network LDACS Network Mapping Server Satcom network Ground end system Core network

System Load: # of messages (2) Number of LISP MapRequest Indirect mode 1000 Direct Mode 800 600 400 200 0 10 30 50 10 30 50 10 30 50 10 30 50 10 30 50 delay 20ms delay 15ms delay 40ms delay 10ms delay 0s

Conclusions and Future Work • SAPIENT + LISP: system-level simulator for FCI and Multilink • Arbitrarily increase the complexity of domains, keeping the same Router Architecture • Evaluation of the system LOAD • Move everything to IPv6 • Testing using realistic traffic models and mobility patterns