1-to-Many and many-to-1 communication in hybrid wireless network-on-chip

Abstract

To alleviate the complex communication problems arising in the network-on-chip (NoC) architectures as the number of on-chip components increases, wireless network-on-chip (WiNoC) is among the most promising scalable interconnection architectures for future generation NoCs. Since 1-to-many and many-to-1 communications caused by the cache coherence protocol in the multiprocessor system have high demands on the network, we propose several optimization schemes to improve both 1-to-many and many-to-1 communications in the hybrid WiNoC. Experimental results show that our optimized hybrid WiNoC can reduce the network latency by ~50% on average.