Optimization Algorithm for AoI-Based UAV-Assisted Data Collection

Algorithm 4

Greedy algorithm based on data collection order optimization.

Input: Node coordinates in each cluster, the set of cluster heads , the

   node situation in each cluster;

Output: The order of node uploads in each cluster, the value of the suboptimal

   function of P3;

1: for i=1:M do

2: for j=1: do

3: table⟵Record the nodes that have been uploaded;

4: list⟵Record nodes that have not been uploaded yet;

5: According to equation (20), the next node that can lower the objective

  value of the function is found from the list.

6: end for

7: end for