Abstract: With the rapid advancement of space communication technologies in emerging fields such as low-altitude intelligent networks,interplanetary Internet,and satellite-terrestrial integrated systems,traditional network architectures designed for relatively static terrestrial environments are increasingly inadequate. These conventional architectures face significant challenges in coping with highly dynamic node mobility,frequent topology changes. To address these fundamental limitations,this paper proposes a novel identifier-based computing-storage-forwarding convergence mechanism and constructs a heterogeneous converged network architecture tailored for space communication. The proposed mechanism centers around a unified identifier system that establishes multi-layer mapping relationships among identifier types,including bundle identifiers,network function identifiers,component identifiers,group identifiers,and terminal identifiers. This multi-layer mapping decouples network services from underlying hardware,facilitates unified scheduling of heterogeneous network resources,and supports intelligent resolution of service demands across diverse network domains. On this basis,a three-layer converged architecture is designed,comprising the bundle service layer,the convergence adaptation layer,and the network component layer. By integrating store-and-forward strategies with distributed networking methods,the architecture mitigates the effects of intermittent links and long propagation delays typical of space environments. Furthermore,a distributed mobile network prototype is developed to validate the proposed architecture and mechanisms. Experimental results demonstrate that the proposed mechanism reduces average transmission latency by over 35% versus conventional approaches under mobile conditions. In addition,the system shows significantly enhanced robustness against link disruptions and improved communication resource utilization efficiency. These findings confirm the effectiveness and feasibility of the identifier-based heterogeneous convergence mechanism in addressing highly dynamic network topologies,providing a viable technical pathway for developing future space communication systems with identifier-driven intelligent scheduling capabilities.

Key words: Computing and network convergence, Space communications, Low-altitude economy, Distributed networks, Heterogeneous network convergence, Cooperative transmission