Embodiments of the application provide device, method and system for routing global assistant signals in a NoC. The device comprises: a signal distributing element having an associated intermediate router provided in a system for routing global assistant signals in a NoC which includes at least one intermediate router electrically interposed between a source router and a destination router, wherein the signal distributing element is configured to: based on a predetermined criterion, select either local global assistant signals generated by the associated intermediate router or upstream global assistant signals received from an upstream router of the associated intermediate router as current global assistant signals to be sent to a downstream router of the associated intermediate router.