@article{Xi LI   Zhang Heli:1,
author = {[Xi LI   Zhang Heli]},
title = {Efficient caching strategy based on graph coloring for moving users in ultra dense networks
},
publisher = {The Journal of China Universities of Posts and Telecommunications},
year = {2019},
journal = {Journal of China Universities of Posts and Telecommunications},
volume = {26},
number = {3},
eid = {1},
pages = {1-7},
keywords = { ultra dense network, graph coloring, caching, moving user, download delay},
doi = https://jcupt.bupt.edu.cn/EN/10.19682/j.cnki.1005-8885.2019.0011
}