The communication concept shall ensure signal communication path between ECUs in thevehicle that need information from each other within a certain time. The timing of signalcommunication shall be assured off-line (by mathematical assurance, static testing, staticschedules or similar). All ECUs on a network segment shall have the same networkcommunication concept.The most important criteria are The COM stack having a predictable behaviour Signals shall have a defined allowed max age Signals shall have a defined period, or event signals shall not be sent more oftenthan a specified interval Post-build configuration to allow reconfiguration of signal packing into frames withoutrecompiling application software Known failure modes for communication of safety related dataApplications that transmits and receives information on multiplexed networks shall fulfil: Generation of signals according to given timing specifications Signal interface between application and Com Stack, i.e. no frame identifiers inapplication software Tolerate signal jitter between best case and specified worst case signal latencywithout the need for re-verification.