Wireless Network-on-Chip (WiNoC) are being examined for parallel applications to improve the performances by reducing multi-hop latency. Wireless nodes handle massive data transmission assignment, the data bandwidth and energy efficiency of the WiNoC architecture can be improved by establishing wireless links to respond to dynamically changing traffic patterns. Among them, the wireless token mechanism is widely used, since it would take little additional hardware overhead and simple operation process. However, the traditional wireless token mechanism is a time-division-multiplexed fair strategy, and cannot well cope with non-uniform traffic patterns. In this paper, a priority-based dynamic media access control (MAC) mechanism in wireless network-on-chip is architected by redefining MAC mechanism, which aims to make wireless MAC protocols more suitable for non-uniform traffic patterns. Experimental results show that the proposed scheme in this paper guarantees the network performance equivalent to the traditional token mechanism in random traffic mode, and the network throughput is increased by 14%–15% in the hotspot mode. Compared with the traditional token mechanism, the average packet delay is greatly reduced before the saturation point with little extra hardware overhead introduced simultaneously.

无线片上网络 (WiNoC) 正在检查并行应用程序，以通过减少多跳延迟来提高性能。无线节点处理海量数据传输分配，通过建立无线链路来响应动态变化的流量模式，可以提高WiNoC架构的数据带宽和能源效率。其中，无线令牌机制被广泛使用，因为它不需要额外的硬件开销和简单的操作过程。然而，传统的无线令牌机制是一种时分复用的公平策略，不能很好地应对不均匀的流量模式。在本文中，通过重新定义MAC机制，构建了无线片上网络中基于优先级的动态媒体访问控制（MAC）机制，旨在使无线 MAC 协议更适合非均匀流量模式。实验结果表明，本文提出的方案在随机流量模式下保证了与传统令牌机制相当的网络性能，在热点模式下网络吞吐量提高了14%~15%。与传统的令牌机制相比，在饱和点之前的平均数据包延迟大大降低，同时引入的额外硬件开销很少。