cm³WiNoCs: Congestion-Aware Millimeter-Wave Multichannel Wireless Networks-on-Chip

• Main Authors: Dedong Zhao, Yiming Ouyang, Qi Wang, Huaguo Liang
• Format: Article
• Language: English
• Published: IEEE 2020-01-01
• Series: IEEE Access
• Subjects: Congestion-aware; millimeter-wave wireless; multi-channel; networks-on-chip
• Online Access: https://ieeexplore.ieee.org/document/8976156/

Millimeter-wave (mm-Wave) technology has been widely adopted in recent wireless network-on-chip (WiNoC) design since it is fully compatible with current CMOS process. By employing efficient channel multiplexing mechanisms, the performance of WiNoCs can be improved. However, such improvement is very limited since the wireless channels are generally shared by multiple pairs of communicating nodes and as the network size scales up, the multiplexing mechanisms perform worse. In this work, more physically achievable mm-Wave channels are introduced in WiNoCs, based on which, a high-performance millimeter-wave multichannel WiNoC architecture is elaborated which includes designs of topology, routing and MAC mechanism. Besides, to relieve the congestion in hubs, a congestion-aware adaptive channel selection (CAACS) mechanism is also proposed. Simulation results show that such an architecture increases the saturated throughput by 16%~98% and by introducing the CAACS mechanism, the saturated throughput can be further improved by up to 17%. The average packet delay is also significantly reduced while just negligible area and energy overhead are produced.