Last Hop Options for DTN

Pitts, Robert Lee

关键词: DISRUPTION TOLERANT NETWORKING (DTN);    PROTOCOL (COMPUTERS);    CONSULTATIVE COMMITTEE FOR SPACE DATA SYSTEMS (CCSDS);    INTERNATIONAL SPACE STATION;    PAYLOADS;   

RP-ID  :  M18-6632

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

It is possible to use a Delay Tolerant Network (DTN) to transport data and/or commanding from one end-point to another end-point where DTN is not used. This implies that at least one or the other end-point is sending and receiving as a non-DTN node. It also implies that at least one intermediate node prior to the non-DTN node has a Convergence Layer Adapter (CLA) or application which supports appropriate protocols. This is the basic concept of Rationale, Scenarios, and Requirements for DTN in Space, section 4.2.2.6.3: An application on the last hop relay node may extract TeleCommands(TCs) from an immediate or delayed TC file and radiate them as TCs to their destination (typically orbiter to lander); Rationale: Such an application could be used to support low-level commanding in case the destination spacecraft’s network layer is not functioning properly.