Soochow University

Weidong Shao

Gangxiang Shen

Mingyi Gao

Qi Chen

Hong Chen

Bowen Chen

Ling Liu

Ruixin Liang

Xuejiao Zhao

Shoucui Wang

Jingwen Hu

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.

Joint optimization method and system for delay and spectrum occupation in cloud-edge collaborative network

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.

Method and system for allocating dedicated protected spectrum based on crosstalk awareness

Provided are a method and a device for determining a clock frequency of a router card. The method includes steps A to D. In step A, a target average port traffic is obtained by using the number of ports and a total to-be-served traffic higher than zero of a target network node for each of neighboring network nodes. In step B, a clock frequency meeting the demand of the target average port traffic is determined as a clock frequency of any router card, the clock frequency of which has not been set, in the target network node. In step C, the total to-be-served traffic and the number of ports are updated. In step D, step A is performed, in a case that there is the updated total to-be-served traffic higher than zero.

Clock frequency determining method and device for router card

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Jiangsu, China

Weidong Shao