Distributed Caching Based on Matching Game in LEO Satellite Constellation Networks

作者：Liu, Shuaijun; Hu, Xin; Wang, Yipeng; Cui, Gaofeng^*; Wang, Weidong

来源：IEEE Communications Letters, 2018, 22(2): 300-303.

DOI：10.1109/LCOMM.2017.2771434

• Information-centric network (ICN)
• content access delay (CAD)
• many-to-many matching with externalities
• two-sided exchange-stable

With the rapid development of low Earth orbit (LEO) constellation satellite networks and on-board processing, in-network content caching becomes feasible, which can further improve the system performance. In order to minimize user terminals content access delay, a novel caching algorithm by optimizing content placement in LEO satellite constellation networks is proposed in this letter. The formulated problem is proved to be NP-complete (NPC) by reducing it to the 2-disjoint set cover problem, which is a known NPC problem. This letter considers the interactions among distributed satellites for making individual content decisions. Then, this letter adopts an exchange-stable matching (ESM) algorithm based on many-to-many matching game with externalities. Simulation results show that the ESM algorithm can improve the system performance in terms of content access delay.

• 出版日期2018-2
• 单位北京邮电大学