LDACS

In this update we fixed some imprecise wording, especially in the security section. Furthermore work on restructuring paragraphs with the important IETF words defined in RFC 2119 MUST, MUST NOT, SHOULD, SHOULD NOT, MAY was started.

In this update, we formatted the DO-350A requirements to IETF conform draft standard and we fixed the position of th terminology chapter.

In this update, we fixed all missing abbreviations and incorporated further feedback on LDACS communication and security requirements.

We clearly list communication and surveillance requirements for LDACS from the RTCA DO-350A standard.

With this update and renaming of the draft, the WG RAW has officially adopted the working document for LDACS. Thus we have incorporated all the feedback from the WG RAW we received after the version draft-maeurer-raw-ldacs-06.

Growth of civil air traffic worldwide poses a great challenge for the supporting Communication, Navigation and Surveillance (CNS) infrastructure. Analogue systems have to be replaced by digital means to optimize spectrum efficiency and automation is …

In this update we go deeper about the requirements for digital datalinks in aeronautics. We have updated chapter 6 for that purpose and explained requirements in depth coming from RTCA DO-350A.

We have received feedback on ground infrastructure, security, requirement analysis and more. Thus we created chapter 6 - Requirements to LDACS - and extended the chapter 8 on reliability and chapter 10 on security extensively.

In IETF 108 we are going to present the latest and greatest about LDACS development and ask for adoption of our draft.

In version 04, we added section "7. Reliability and Availability", where we list LDACS reliability measures for reliable and robust transmission of wireless data. These include PHY layer robustness due to robust modulation and coding, a fixed frame structure, robust resource scheduling, efficient load balancing, ARQ protocols and priority mechanisms for data prioritization, just to name a few.