this paper gives an idea about NOC

Network on chip or network on a chip (NoC or NOC) is a communication subsystem on an integrated circuit (commonly called a "chip"), typically between IP cores in a system on a chip (SoC). NoCs can span synchronous and asynchronous clock domains or us

Network on chip is an emerging[when?] paradigm for communications within large VLSI systems implemented on a single silicon chip. Sgroi et al. call "the layered-stack approach to the design of the on-chip intercore communications the Network-on-Chip