# A Research Study on Protocol Stack of Space-Based Optical Backbone Network
[PERSON]  
1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; [EMAIL_ADDRESS] (V.Z. ); [EMAIL_ADDRESS] (M.J.); [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (S.H. );  
Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China; ybysbys0522163.com (Y.Y. ); [EMAIL_ADDRESS] (B.W). China Electronics Technology Group Corp 34 th Research Institute, Culin 541004, China; [EMAIL_ADDRESS] (Q.L. ); [EMAIL_ADDRESS] (B.Z. ); [EMAIL_ADDRESS] (W.Z.) [PERSON]  
1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; [EMAIL_ADDRESS] (V.Z. ); [EMAIL_ADDRESS] (M.J.); [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (S.H. );  
Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China; ybysbys0522163.com (Y.Y. ); [EMAIL_ADDRESS] (B.W)  
China Electronics Technology Group Corp 34 th Research Institute, Culin 541004, China; [EMAIL_ADDRESS] (Q.L. ); [EMAIL_ADDRESS] (B.Z. ); [EMAIL_ADDRESS] (W.Z.) [PERSON]  
1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; [EMAIL_ADDRESS] (V.Z. ); [EMAIL_ADDRESS] (M.J.); [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (S.H. );  
Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China; ybysbysbys0522163.com (Y.Y. ); [EMAIL_ADDRESS] (B.W). China Electronics Technology Group Corp 34 th Research Institute, Culin 541004, China; [EMAIL_ADDRESS] (Q.L. ); [EMAIL_ADDRESS] (B.Z. ); [EMAIL_ADDRESS] (W.Z.) [PERSON]  
1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; [EMAIL_ADDRESS] (V.Z. ); [EMAIL_ADDRESS] (M.J.); [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (S.H. );  
Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China; ybysbysbys0522163.com (Y.Y. ); [EMAIL_ADDRESS] (B.W)  
China Electronics Technology Group Corp 34 th Research Institute, Culin 541004, China; [EMAIL_ADDRESS] (Q.L. ); [EMAIL_ADDRESS] (B.Z. ); [EMAIL_ADDRESS] (W.Z.) [PERSON]  
1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; [EMAIL_ADDRESS] (V.Z. ); [EMAIL_ADDRESS] (M.J.); [EMAIL_ADDRESS] (Y.W. ); [EMAIL_ADDRESS] (M.F. ); liuyiting@bupa network which could provide large communication capacity and global seamless connections, the global space-based optical backbone network aroused researcher's interests. In 2004, [PERSON] proposed the design of a space-based information network backbone to provide high-speed space-to-space communication for space-based assets and shared on-orbit processing resources [6]. In 2017, [PERSON] proposed an approach which consisted of constructing a virtual random satellite network from a satellite physical topology based on LEO(low earth orbit) [7]. In 2017, [PERSON] proposed a novel time slot based optical burst switching (OBS) architecture for GEO/LEO based satellite backbone networks where GEO means Geosynchronous Orbit [8]. We found that most of the published studies focused on hardware or algorithm design. As an important part of the space-based optical backbone network, networking protocols have not yet received sufficient attention. Regarding the spatial networking protocols, the Consultative Committee for Space Data Systems (CCSDS) developed a series of specifications and recommendations, such as the CCSDS protocol stack [9], which lays the protocol foundations of spatial data transmission. However, for a spaced-based optical backbone network that is capable of facing the internet era, these functions are not sufficient.