Abstract
The wireless network on chip WiNoC introduces wireless links in the traditional network on chip (NoC), which reduces the network diameter and enables high-throughput, low-latency data communications. In addition, if wireless nodes can dynamically request data transmission, wireless bandwidth will be more effectively utilized. In order to implement a conflict-free, adaptive bandwidth allocation strategy, a priority-based dynamic media access control mechanism has been designed. In this work, a dynamic priority calculation method has been proposed based on the packets’ transmission time and the waiting time in the queue. Then, a priority calculating unit is designed to calculate the dynamic priority of the packet. Finally, the central control unit designed obtains the dynamic priority of the packets, and dynamically authorizes the use rights of the wireless medium according to the priority of the data packet. Simulation experiments show that the media access control mechanism proposed in this paper has significant improvements in throughput, delay, and power consumption performances compared with other mechanisms [S.Deb et al., Wireless NoC as interconnection backbone for multicore chips: promises and challenges, IEEE J. Emerg. Sel. Topics Circuits Syst. 2 (2012) 228–239].
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