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

A joint optimization system for delay and spectrum occupation in a cloud-edge collaborative network, comprising:

• an initialization module, configured to initialize a cloud-edge collaborative network, and generate a set of user requests;
• a modeling module, configured to establish a target function of minimum average end-to-end delay and minimum spectrum slot occupation of a user request;
• a determination module, configured to sequentially determine, during processing of each user request based on the target function, 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, wherein if all constraints are satisfied, the user request is successfully processed, proceed to step S4;
• or if any constraint is not satisfied, the user request fails to be processed;
• and
• a calculation module, configured to calculate average end-to-end delay and spectrum resource occupancy of the user request.