ISO 18428:2013 pdf free

ISO 18428:2013 pdf free.Space data and information transfer systems一Spacecraft Onboard Interface Services
The Device Discovery Service operates with Best-effort quality of service. This service makes a single attempt to provide the requested service but cannot ensure that it will be completed successfully.
Channel and Priority parameters are not provided in the Device Discovery Service. Were a subnetwork to provide channelisation and prioritisation to users of other subnetwork services, it would fall to the subnetwork Management Information Base (MIB) to set default channel and priority levels to ensure that the Device Discovery Service adhere to an overall subnetwork prioritisation and resource-reservation scheme.
The SOIS services are intended for use with protocols that operate solely within the confines of an onboard subnet. It is therefore assumed that SOIS services operate in an isolated environment which is protected from external threats. Any external communication is assumed to be protected by services associated with the relevant space _link protocols. The specification of such security services is outside the scope of this document.
At the time of writing there are no identified security concerns. If confidentiality of data is required within a spacecraft it is assumed it is applied at the Application layer. More information regarding the choice of service and where it can be implemented can be found in reference [A2].
executing within the spacecraft have been thoroughly tested and cleared for use by the mission implementer. Confidentiality of applications can be provided by Application layer mechanisms or by specific implementation methods such as time and space partitioning.Such methods are outside the scope of SOIS.
The security services are outside the scope of this document and are expected to be applied at layers above or below those specified in this document. If confidentiality is not implemented,science data or other parameters transmitted within the spacecraft might be visible to other applications resident within the spacecraft, resulting in disclosure of sensitive or private information. ISO 18428 pdf download.