公开(公告)号：US11882390B2

公开(公告)日：2024-01-23

申请号：US17787571

申请日：2021-08-23

申请人： SOOCHOW UNIVERSITY

发明人： Bowen Chen ,  Jingwen Hu ,  Qi Chen ,  Gangxiang Shen ,  Mingyi Gao ,  Weidong Shao ,  Hong Chen

IPC分类号： H04B10/00 ,  H04Q11/00 ,  H04B10/032 ,  H04J14/00

CPC分类号： H04Q11/0062 ,  H04B10/032 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0086

摘要： The present invention relates to a method and system for allocating a dedicated protected spectrum based on crosstalk awareness, including calculation, core selection, a modulation format, and spectrum allocation. First, working paths are first established: selecting a modulation format; determining a maximum allowable crosstalk value, classifying cores, calculating inter-core crosstalk values of all available spectrum blocks, and selecting a spectrum block with the smallest crosstalk value for allocation; and then dedicated protection paths are established: selecting a modulation format; determining a maximum allowable crosstalk value, classifying cores, calculating inter-core crosstalk values of all available spectrum blocks, and selecting a spectrum block with the smallest crosstalk value for allocation. The present invention improves the spectrum resource efficiency of a space-division multiplexing elastic optical network, reduces a crosstalk value of each fiber link, and implements the survivability of a space-division multiplexing optical network.

公开(公告)号：US11968122B2

公开(公告)日：2024-04-23

申请号：US17915257

申请日：2021-10-11

申请人： SOOCHOW UNIVERSITY

发明人： Bowen Chen ,  Ling Liu ,  Ruixin Liang ,  Shoucui Wang ,  Qi Chen ,  Gangxiang Shen ,  Mingyi Gao ,  Weidong Shao ,  Hong Chen

IPC分类号： G06F13/00 ,  H04L47/11 ,  H04L47/2491

CPC分类号： H04L47/11 ,  H04L47/2491

摘要： The present invention provides a joint optimization method and system for delay and spectrum occupation in a cloud-edge collaborative network. The method includes: initializing a cloud-edge collaborative network, and generating a set of user requests; establishing a target function of minimum average end-to-end delay and minimum spectrum slot occupation of a user request; during processing of each user request based on the target function, sequentially determining whether a node and path selection uniqueness constraint, a mobile edge computing (MEC) server load constraint, a spectrum resource occupation and uniqueness constraint, a spectrum continuity constraint, and a spectrum consistency constraint are satisfied, where if all constraints are satisfied, the user request is successfully processed, and the process turns to step S4; or if any constraint is not satisfied, the user request fails to be processed; and calculating average end-to-end delay and spectrum resource occupancy of the user request.

公开(公告)号：US11387897B2

公开(公告)日：2022-07-12

申请号：US17256892

申请日：2020-07-24

申请人： SOOCHOW UNIVERSITY

发明人： Bowen Chen ,  Qingcheng Zhu ,  Gangxiang Shen ,  Lian Xiang ,  Mingyi Gao

IPC分类号： H04B10/032

摘要： The present invention provides a protection method and system in flexible bandwidth optical networks with multi-core fiber. The method includes steps of: selecting an appropriate working path for a connection request, and selecting a working core as a transmission channel on the working path; allocating, on the selected working path and working core, a spectrum resource that satisfies spectral continuity, spectral consistency, and a crosstalk threshold constraint; selecting, for the connection request, a dedicated protection path that does not intersect a link of the working path, and selecting a protection core as a transmission channel on the protection path; and finally, allocating, on the selected protection path and protection core, the spectrum resource that satisfies the spectral continuity, the spectral consistency, and the crosstalk threshold constraint.