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Aerospace Tsn Use Cases, Traffic Types, And AEROSPACE TSN USE CASES, TRAFFIC REV. 0.6 TYPES, AND REQUIRMENTS Date: March 4, 2021 Document in support of IEEE 802.1DP and SAE AS6675: TSN Profile for Aerospace 1 2 CONTRIBUTOR GROUP 3 4 Fischer, Wolfgang <[email protected]> 5 Gelish, Joseph <[email protected]> 6 Hegarty, Michael <[email protected]> 7 Jabbar, Abdul <[email protected]> 8 Lawton, Grant <[email protected]> 9 Nelson, Brent <[email protected]> 10 Rang, John <[email protected]> 11 Scanlon, Gregory <[email protected]> 12 Santinelli, Luca <[email protected]> 13 Zaehring, Jamie <[email protected]> 14 15 16 17 18 19 __________________________________________________________________________________________________________________________________________ V0.6 AEROSPACE TSN USE CASES Page 2 of 32 20 TABLE OF CONTENTS 21 1. Scope ............................................................................................................................................................................... 3 22 1.1 Definitions ................................................................................................................................................................ 3 23 1.2 Symbols and Abbreviations ..................................................................................................................................... 3 24 1.2.1 Symbols ............................................................................................................................................................... 3 25 1.2.2 Abbreviations ....................................................................................................................................................... 3 26 2. Introduction to Aerospace networks ................................................................................................................................ 3 27 2.1 Current Network Architecture .................................................................................................................................. 3 28 2.2 Considerations for Future TSN based network architecture ................................................................................... 4 29 2.3 Time Synchronization in Aerospace ........................................................................................................................ 7 30 3. Aerospace Use Cases ..................................................................................................................................................... 8 31 3.1.1 General ................................................................................................................................................................ 8 32 3.1.2 Small Business Aircraft ..................................................................................................................................... 10 33 3.1.3 Large Passenger Aircraft .................................................................................................................................. 11 34 3.1.4 Large Passenger Aircraft (Cabin) ...................................................................................................................... 13 35 3.1.5 Small and Combat Military Mission Network ..................................................................................................... 15 36 3.1.6 Large Military Aircraft Mission Network ............................................................................................................. 16 37 3.1.7 Small, Combat, and Large Military Flight Network (VMS) ................................................................................. 17 38 3.1.8 Unmanned Military Aircraft Network .................................................................................................................. 19 39 3.1.9 Rotary Wing Mission Network ........................................................................................................................... 20 40 3.1.10 Rotary Wing Flight Network .......................................................................................................................... 21 41 3.1.11 Satellite Network ........................................................................................................................................... 22 42 3.1.12 Fibre Channel over TSN backbone (AS6509) .............................................................................................. 25 43 3.1.13 Summary of Use Cases ................................................................................................................................ 27 44 4. Aerospace Traffic Types ................................................................................................................................................ 28 45 4.1 Traffic Definitions................................................................................................................................................... 28 46 5. Aerospace TSN Requirements ...................................................................................................................................... 28 47 5.1 Interoperability and Interconnection ...................................................................................................................... 28 48 5.2 Aerospace Mode of Operations ............................................................................................................................ 29 49 5.3 Configuration Requirements ................................................................................................................................. 29 50 5.4 Network Availability Requirements ........................................................................................................................ 29 51 5.5 General Bridge 802.1Q requirements ................................................................................................................... 30 52 5.6 Time Synchronization Requirements .................................................................................................................... 30 53 5.7 Traffic Shaping Requirements ............................................................................................................................... 30 54 5.8 Filtering and Policing Requirements ..................................................................................................................... 30 55 5.9 Other Requirements That Were Considered ........................................................................................................ 31 56 57 58 V0.6 AEROSPACE TSN USE CASES Page 3 of 32 59 1. SCOPE 60 This document captures aerospace network use cases that may potentially use TSN profile. It includes use cases for both 61 commerical and military platforms. Furthermore, the use cases could be based on traditionally Ethernet based networks 62 (e.g. ARINC664) or non-ethernet based communication sub-systems (e.g. Fibre Channel or FireWire). The use cases 63 cover all domains of an aerospace platform. 64 1.1 Definitions 65 66 1.2 Symbols and Abbreviations 67 1.2.1 Symbols 68 69 1.2.2 Abbreviations 70 71 2. INTRODUCTION TO AEROSPACE NETWORKS 72 This captures the high level aerospace architecture along with specific examples of the use cases (from the ppt slide on 73 topology and instances).Generic description of the aircraft network/domains from a commercial and military perspective. 74 2.1 Current Network Architecture 75 Commercial Aircraft 76 Networks are used in commercial aircraft to support varying levels of capabilities from supporting passenger 77 entertainment to the actual control of the aircraft. Modern commercial aircraft can be subdivided into three networking 78 domains: Aircraft Control Domain (ACD), Airline Information Services Domain (AISD), and the Passenger Information and 79 Entertainment Services Domain (PIESD) as shown in Figure 1. 80 Passenger Information & Airline Aircraft Entertainment Service Information Control Domain (PIESD) Services Domain Domain (ACD) (AISD) 81 82 Figure 1: Commercial Aircraft Network Domains V0.6 AEROSPACE TSN USE CASES Page 4 of 32 83 The Aircraft Control Domain (ACD) networks host equipment that contribute to the safe flight of the aircraft. Functions 84 typically hosted on the ACD network include electronic flight instrument system (EFIS), engine-indicating and crew 85 alerting system (EICAS), flight management system (FMS), flight controls, and other control systems. Due to the high 86 criticality of the functions hosted, the ACD network has high safety requirements and deterministic behavior is required. 87 In the ACD, networks were initially brought on the aircraft in order to reduce size, weight, and power (SWaP). In legacy 88 aircraft, function specific federated equipment was interconnected by lower bandwidth point to point databuses such as 89 ARINC 429. Modern aircraft employ integrated modular avionics (IMA) that reduces the amount of federated equipment 90 and wires. In an IMA system, a general purpose processor is used to host the applications from multiple systems. The 91 network provides an interconnect between the IMA processing, other functions hosted on the network, and to data 92 concentrators that provide legacy interfaces. SWaP savings occur due to the reduction in equipment needed and the 93 reduction in wiring in due to consolidated buses as depicted in Figure 2. 94 Figure 2: Commercial Integrated Modular Avionics Depiction 95 The Airline Information
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