Caching and Placement for In-Network Caching in Device-to-Device Communications

Algorithm 1

Joint caching decision and content discovery algorithm.

Require:, , , ,

0.001, .

while and do

Find the optimal .

Obtain through (24).

Find the optimal content discovery of D2D pair

for content by using (25).

Update .

Set and .

Update the dual variable according to (26).

Update .

end while