TwoPhases: A transmission scheme to reduce the link width at deflection routing based Network-on-Chips

Deflection routing is a promising approach for energy and hardware efficient Network-on-Chips (NoCs). As packet switching cannot be deployed for deflection routing based NoCs, an appropriate link width for such NoCs is crucial. Further, the most appropriate link width can be considerably larger, compared to packet switched NoCs. In this paper, we present a new alternating transmission scheme for deflection routing which allows smaller link widths. Simulations and theoretical comparisons with existing basic transmission methods show that our approach outperforms the existing approaches for high injection rates and uniform packet sizes.