User association, task unloading and resource allocation optimization method based on digital twinning

The invention belongs to the technical field of mobile communication, and relates to a digital twinning-based user association, task unloading and resource allocation optimization method, which comprises the following steps of: establishing a digital twinning edge network model; constructing a digital twin model, a service cache model and a task unloading model according to the digital twin edge network model; establishing a user association, task unloading, service caching and resource allocation joint optimization problem according to the digital twin model, the service caching model and the task unloading model; abstracting a joint optimization problem into a Markov decision process; acquiring real-time data provided by the DT layer, and calculating an optimal decision by using a DDPG algorithm based on a Markov decision process; according to the method, a joint optimization problem of user association, task unloading, service caching and resource allocation is established, an unloading process is abstract