부산대학교 도서관

Space terahertz information-centric network (STICN) employ the information-centric network (ICN) architecture, enabling inter-satellite communication through terahertz inter-satellite links, offering advantages such as high data capacity, efficiency, and fast communication. However, high-capacity, high-speed, and efficient communication leads to increased energy consumption of satellite payloads. Given the limited onboard space computing resources, accommodating high-power demands becomes challenging. Existing routing algorithms for STICN lack consideration of energy consumption and terahertz characteristics, hindering the achievement of high transmission efficiency within the terahertz spectrum. This paper introduces an energy-efficient routing algorithm for STICN, building upon the Floyd-Warshall algorithm. It takes into account the in-network caching characteristics of STICN. When cached content changes, the algorithm selects nodes with the desired cached content that are closer to the source node while considering link energy consumption and current load constraints. This approach jointly optimizes transmission rates and energy consumption to calculate energy-efficient routes. Simulation experiments demonstrate that the proposed routing algorithm reduces payload energy consumption while enhancing network transmission rates.