Energy Efficiency for Data Offloading in D2D Cooperative Caching Networks

Algorithm 2

Joint optimization algorithm.

1:Initialize: , , , calculate based on (16), the maximum tolerance

2:Repeat{Loop}:

  (a) Through solve P1 and find the optimal cache policy with Algorithm 1.

  (b) Through solve P2 and find the optimal transmit power with bisection search.

  (c)Update .

  (d) Set t=t+1.

3:Until or

4:Output , and