Crowdsensing Task Assignment Based on Particle Swarm Optimization in Cognitive Radio Networks

Algorithm 3

Procedure of optimizing the sensing task assignment of the particle.

 for each particle

  for each mobile user

   if its remaining energy satisfies formula (3)

    Maintain the matrix;

    else set the corresponding row vector to zero;

   end if

  end for

  Then the current matrix T ₁ is derived;

   Evaluate the crowdsensing effect function of this particle;

  Obtainthis particle’s P _id (matrix T ₂) based on crowdsensing effect function;

  Obtain (matrix T ₃) with the optimal ;

  Merge matrix T ₁, T ₂, T ₃;

  Optimize the column vectors of the merging matrix;

  Optimize row vectors of the merging matrix with specific probability using (9);

  Evaluate the crowdsensing effect function of merging matrix according to (6);

end for