Second revision of the STP-ISS transport protocol for on-board spacewire networks

The paper provides an overview of the second revision of the Transport protocol STP-ISS, which is developed for SpaceWire on-board networks. Current R&D activity is performed by the specialists of SUAI and JSC “ISS”. The paper shortly compares two revisions of the specification and describes the main mechanisms and quality of service types of the second revision of the protocol. STP-ISS is planned to be used for the next generation spacecrafts

STP-ISS Transport Protocol Overview and Modeling

The paper is concerned with the development of the Transport protocol “STP-ISS” for SpaceWire networks. Firstly we give a brief overview of transport protocols which are intended to operate over SpaceWire: RMAP, CCSDS PTP, STUP, JRDDP and STP. Hereinafter, the paper presents the first revision of the new STP-ISS transport protocol which was developed in accordance with the results of the overview and technical requirements to the transport protocol. Finally, we describe STP-ISS modeling, which was very efficient for the STP-ISS protocol development, testing, analysis and improvement. This paper describes three modeling directions: C++ reference code, SDL-specification and SystemC network model