Design of dual-core connected mesh topology and fine-grained fault-tolerant mechanism for 3D optical network-on-chip  

作　　者：Pengxing GUO Xiangyu HE Yufei YANG Kun LIU Sijing YU Weigang HOU Lei GUO 

机构地区：[1]School of Communications and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [2]Institute of Intelligent Communication and Network Security,Chongqing University of Posts and Telecommunications,Chongqing 400065,China

出　　处：《Science China(Information Sciences)》2023年第11期269-283,共15页中国科学（信息科学）（英文版）

基　　金：supported in part by National Natural Science Foundation of China(Grant Nos.62205043,62222103,62071076,62075024,62221005);Chongqing Municipal Education Commission(Grant No.CXQT21019);Nature Science Foundation of Chongqing(Grant No.CSTB2022NSCQ-MSX1334)。

摘　　要：This paper proposes a fault-tolerant mechanism including a reliable three-dimensional(3D)topology structure named 3D DCMesh(3D dual-core connected mesh)and a fault-tolerant routing algorithm for 3D optical network-on-chip(3D ONoC).In 3D DCMesh,each intellectual property(IP)core connects two optical routers(ORs)with perpendicular physical locations.Thus,every IP core has an additional path selection to play a certain role in redundant protection since it breaks the traditional thinking that each IP core connects only one OR.On the other hand,the previous fault-tolerant algorithm rudely treats the faulty ORs as invalid,resulting in low utilization of resources inside ORs.Hence,this paper proposes a fine-grained fault-tolerant algorithm based on microring resonator faults(FTM-MR),where some ORs along the transmission path can still work normally even if their internal MRs lose efficiency.The simulation results show that the solution in this study outperforms the previous related work by 10.86%-19.97%,6.75%-8.83%,and 13.08%-18.8% for average insertion loss,crosstalk noise,and signal-to-noise ratio(SNR),respectively,under different topology sizes without OR-fault.It can improve the insertion loss performance,crosstalk noise,and the SNR by a maximum of 67.41%,14.2%,and 187.63%,respectively,when the node failure rates are in the range of 50%.

关 键 词：3D ONoC 3D DCMesh topology microring resonator faults FINE-GRAINED fault-tolerant routing 

分 类 号：TN929.1[电子电信—通信与信息系统]