Network Topology Transformation for Fault Tolerance in SpaceWire Onboard Networks

The paper presents a network transformation algorithm for fault tolerance in SpaceWire onboard networks which is implemented in SANDS computer-aided design system. We give general notions on fault tolerance for onboard networks, introduce our algorithm for network transformation and give several examples of running the algorithm on different topologies

Analysis of the transport protocol requirements for the SpaceWire on-board networks of spacecrafts

The paper gives an overview and analysis of SpaceWire oriented transport protocols. Also this paper considers the “Academician M.F. Reshetnev” Information Satellite Systems” general requirements for the Transport protocol to operate over the SpaceWire network technology. Finally, we propose preliminary solutions for some Transport protocol mechanisms

Simulation Of ExoMars2020's Rover Network Using SystemC

In this paper, we describe the process of implemen- tation, goals and results of our research in the modelisation of ExoMars2020's network using SystemC. We will mainly see that the use of database to store the result of a simulation's running can be ef?cient in a network involving packets with huge amount of data, and if such kind of network can be made in parallel, then we can increase the performance of its time execution

Scheduling mechanisms for spacewire networks

The paper describes two mechanisms which solve the problem of time multiplexing for SpaceWire networks. They are a transport-level scheduling mechanism, which is used in the STP-ISS protocol, and SpaceWire-DSUAI, that is a protocol prototype. The current paper presents an overview of these mechanisms and compares them. In addition, we provide a short analysis of time-division multiplexing in the communication protocols

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

Fault-tolerance analysis algorithm for SpaceWire onboard networks

The paper presents algorithms for fault tolerance evaluation which will be applied in a new computer-aided design system for SpaceWire onboard networks. We give general notions on fault tolerance for onboard networks, and introduce our algorithm for evaluation of fault tolerance in SpaceWire networks. Finally we address our future work direction on network topology transformation for fault tolerance

Conformance testing of the STP-ISS protocol implementation by means of temporal logic

The paper considers a process of conformance testing by means of computational tree temporal logic. Authors present a Kripke structure, which is STP-ISS-13 protocol implementation under test and a compilation example of temporal logic formula for a protocol requirement. Finally, the paper gives an example of error detection

Protocol for deterministic data delivery in SpaceWire networks

The paper presents a new scheduling protocol for SpaceWire networks which provides deterministic data delivery in the network and performs arbitration of data coming from several transport protocols. Firstly, we give an overview of TDMA-based network protocols that have been developed for the ground-based and onboard networks. Then, we present a new scheduling protocol which is based on the STP-ISS scheduling mechanism and extended with additional features

Research and analysis of flow control mechanism for transport protocols of the space wire onboard networks

The paper provides the analysis of the existing solutions for the flow control mechanisms of the well-known industrial protocols (Infiniband, Fibre Channel, PCI Express, USB 3.1), protocols for mobile communications (UniPro), protocols for global networks (TCP/IP) and onboard networks (SpaceWire, GigaSpaceWire, SpaceFibre, JRDDP, SpaceWire-R, RapidIO, STP). Current analysis resulted in the Flow Control mechanism that was proposed during the development of the new transport protocol STP-ISS for the onboard networks

Development of the Transport Layer Scheduling Mechanism for the Onboard SpaceWire Networks

—Scheduling becomes an important mechanism for the onboard networks. It gives an ability to control the traffic and network capacity. This paper gives an overview of the development of the new transport layer scheduling mechanism for the SpaceWire onboard networks and presents the scheduling mechanisms modeling results. In addition, the paper compares the developed scheduling mechanism with the one that was adapted from the SpaceWire-D transport protocol. The results of this research will be used for the development of a new transport protocol operating over SpaceWire