Congestion Control and Traffic Scheduling for Collaborative Crowdsourcing in SDN Enabled Mobile Wireless Networks

Algorithm 2

Congestion control algorithm.

Algorithm for Congestion control

  Begin

  Input: mobile wireless network topology graph , crowdsourcing task flow matrix .

  for each row in   do

If   is non-SDN node then

Assign the task flow to its next hop forwarding link;

repeat

, ;

until all non-SDN nodes are traversed;

If   is SDN node then

Compute all possible forwarding path ;

Compute the link capacity ;

Use the AFSA algorithm to assign task flow to its next hop forwarding link;

repeat

, ;

until all SDN nodes are traversed;

Update the crowdsourcing task traffic matrix to , . Return to the third step.

  Output: Number of times: .

  End.