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The demands of socioeconomic development frequently lead to large-scale population migration among cities. While complex network and population migration algorithms have been employed to evaluate this phenomenon, predicting the future shift of urban networks has remained challenging. In this study, we expend the conventional two-dimensional perception of urban structure, projecting geographic information of cities into a high-dimensional future dimension to forecast changes in the network structure with deep learning algorithms. Using the population migration data from 362 Chinese cities, we employed multivariate and non-linear layers to construct a deep learning model that exhibits good geographic and temporal generalization across major metropolitan regions in China, enabling us to forecast the urban network for the year 2025. The result shows that the urban network becomes more equitable and less concentrated in a few dominant cities. This shift suggests a more balanced distribution of resources, opportunities, and development across the urban agglomerations. Understanding the urban structure from the lens of future mobile networks offers deeper insight and perception of its future dimensional nature. By embracing this paradigm shift, we can retain knowledge about urban dynamics and pave the way for more effective urban management. • Advancing the urban structure research from past-present dimension to a future dimension. • Constructing a flows prediction model with strong geographical and temporal generalization. • Predicting mobility patterns in large urban agglomerations in the coming years. • Urban network of major agglomeration will become more equitable and less concentrated. • Proposing a forward-looking urban planning solution for future rapid urban mobility. [ABSTRACT FROM AUTHOR]