Collaborative caching method based on social awareness in fog wireless access network

The invention discloses a collaborative caching method based on social awareness in a fog wireless access network. The collaborative caching method comprises the following steps: calculating to obtaina social relationship between fog wireless access points; according to the social relationship between the fog wireless access points; dividing all the fog wireless access points into a plurality ofdisjoint clusters; according to the obtained cluster, calculating time delay T and energy consumption E under different file content transmission modes to obtain an integer programming problem: solving the integer programming problem obtained in the step S100 by adopting a firefly algorithm, and taking the position X* of the brightest firefly as a content placement scheme of collaborative caching;performing collaborative caching according to the content placement scheme; according to the invention, the content diversity in the fog wireless access points can be effectively increased, the cooperation gain between the fog