1. Overview of Space Communication Cross Support Architecture April 2013 Takahiro Yamada (JAXA/ISAS) 1

2. Purpose of the Architecture Space Communications Cross Support Architecture – To be used as a common framework when CCSDS Agencies provide and use space communications cross support services develop systems that provide interoperable space communications cross support services 2

3. Documents Space Communications Cross Support Architecture Description Document – Green Book – Provides descriptive information Space Communications Cross Support Architecture Requirements Document – Magenta Book – Provides the normative specifications and definitions 3

4. System Elements Cross Support Service Element (CSSE) – a physical element that is involved in providing one or more space communications cross support services, possibly together with some other CSSEs User Element (UE) – a physical element that is involved in using one or more space communications cross support services provided by one or more CSSEs Cross Support Service System (CSSS) – a set of CSSEs or UEs that are managed by a single authority with a single set of management policies 4

5. Cross Support Service Elements CSSE TypeEarth Space/ Orbit Space/ Planet Earth-Space Link Terminal (ESLT) X Earth Routing Node X Space Routing Node X Planet-Space Link Terminal (PSLT) X Earth/Planet Wide Area Network (WAN) Routing Node XX 5

6. User Elements UE TypeEarth Space/ Orbit Space/ Planet Earth User Node X Space User Node Varies Planet User Node X Earth Routing Node X 6

7. ABA Configuration 7

8. SSI Configuration 8

9. ABA Service Interfaces 9

10. SSI Service Interfaces 1 10

11. SSI Service Interfaces 2 11

12. SSI Service Interfaces 3 12

13. ABA Earth User Node 13

14. ABA Earth-Space Link Terminal 14

15. ABA Space User Node 15

16. SSI Earth User Node 16

17. SSI Earth Routing Node 17

18. SSI Earth/Planet-Space Link Terminal 18

19. SSI Space Routing Node 19

20. SSI Earth/Planet WAN Routing Node 20

21. SSI Space/Planet User Node 21

22. ABA Forward Protocol Layering 22

23. ABA Return Protocol Layering 23

24. SSI Forward Protocol Layering 24

25. SSI Return Protocol Layering 25