Evaluation of robust header compression for aeronautical operational data

Integrated systems for provision of both operational and non-operational services are investigated in SANDRA (Seamless Aeronautical Networking through integration of Data-Links, Radios and Antennas). This ultimately comprises integration on the network layer which opposes the hardware segregation of operational and non-operational aeronautical domains. Segregation may in this case be achieved by IPsec which introduces significant overhead. This paper investigates the achievable bandwidth savings for future Air Traffic Services and Airline Operational Communications services through RObust Header Compression (ROHC) schemes for IPsec. Further, a ROHC scheme for IPsec with ESP NULL encryption for non-encrypted operational services is discussed.