Design Of Traffic Balance And Reconfigurable High Energy Efficiency Router In WiNoC

With the continuous progress of integrated circuit manufacturing technology,more and more cores can be integrated on the chip,and the average transmission path of packets in the traditional planar metal interconnection Network on Chip(No C)keeps increasing,which leads to problems such as high latency and high power consumption.Wireless Network on Chip(WINo C)has been widely concerned by researchers at home and abroad because of its ability to shorten the Network diameter by using mature Wireless technology.However,the introduction of wireless routers will lead to traffic aggregation in the network,resulting in more serious congestion,hot spots and other problems than the traditional on-chip network.In addition,in the state of low traffic,the idle time of routers is significant,and the static power consumption accounts for the vast proportion of the total power consumption,which affects the communication efficiency and energy efficiency of the network.Therefore,congestion and power consumption in wireless on-chip networks are studied deeply in this dissertation.The main work of this dissertation is as follows:1)To solve the congestion of wireless nodes in WiNoC and the Traffic imbalance in the network,this dissertation proposes a Global Traffic Balance(GTB)mechanism based on Edge-First algorithm.Firstly,it optimizes the mechanism of dividing wired wireless packets to reduce the congestion at wireless nodes.Secondly,according to the congestion of Wireless Router(WR),the edge-first routing algorithm is proposed to balance the traffic in the subnet.Finally,the Global Subnet Congestion awareness(GSCA)judgment mechanism is proposed in the Global network.The Congestion information of each Subnet is transmitted by tokens,so that long distance packets pass through the low Congestion Subnet first,and the traffic of the Global network is balanced.Experimental results show that the proposed scheme ensures low network latency and high network throughput under acceptable hardware overhead and power consumption overhead,and significantly balances the traffic load in the network.2)To solve the problem of power consumption under low flow condition of Win OC,this dissertation proposes a Reconfigurable and energy-efficient Router(REE)architecture:First,bypass links are set for the router and deflection rules are formulated.When the router meets the power-gated condition and is ready to enter the sleep state,the connectivity can still be maintained in the network,and the deflection rate of the packet when it meets the sleep router is reduced.Secondly,a reusable predictor is introduced,which can efficiently predict idle time and wake up the sleeping router more reasonably.The addition of fine-grained power gating at the Wireless Interface(WI)sender can effectively save the static power consumption of WI by utilizing token information.Experimental results show that the proposed scheme has negligible effects on delay and throughput,but significant energy saving is achieved.