Fig. 1
From: ECDU: an edge content delivery and update framework in Mobile edge computing
Edge content update process. The detailed process is as follows: (1) a mobile user uploads a content such as c14 to CS1 through BS1; (2) CS1 copies a copy of c14 and migrates it to CP3; (3) CP3 migrates c14 to CP2; (4) CP2 migrates c14 to CP1; (5) CP1 uploads c14 to the cloud data center; (6) other mobile users request c14 from CP2 through BS2; (7) the cloud data center delivers c14 to CP2; (8) CP2 provides c14 service to mobile users