A Multistage Control Mechanism for Group-Based Machine-Type Communications in an LTE System

Algorithm 1

Multistage control mechanism.

Input: 𝑁,𝑆,𝐺_𝑖,𝑗,𝑅_𝑖,𝑗,𝐷_𝑖,𝑀_𝑖,

Output: 𝐴_𝑖

for  𝑗=1  to  𝑄  do

    for  𝑖=1  to  𝑁  do            //allocate resource

    {

        𝐶_𝑖,𝑗=(𝑅_𝑖,𝑗/𝐺_𝑖,𝑗);

        Find  (𝐶_𝑖,𝑗<𝐻_𝑠′ and 𝐶_𝑖,𝑗≥𝐿_𝑠′);    // use (8) and (9) with given 𝑠^′

        Switch  (𝑠^′)

        {

             case (𝑠^′==𝑆): 𝐴_𝑖=𝑀_𝑖; break;

             case(𝑠^′∈Φ): MME sends attach reject message; break;

             default: 𝐴_𝑖=𝐷_𝑗/𝑒^{(𝑠′−1)}; break;

        }

    }

    end for;

end for;