csma_simulation/working_node.m at master · everydayaday/csma_simulation · GitHub

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function [status, timer,flag] = working_node(pre_status_matrix, pre_next_status_timer,frame_size,first_frame_flag)


    len=size(pre_status_matrix,1);
    status=zeros(len,1);
    timer=zeros(len,1);
    flag=first_frame_flag;

    for i=1:len
        if(pre_status_matrix(i)==4 && pre_next_status_timer(i)==1) %SIFS sending ack next time slot;
            status(i)=5;
            timer(i)=2;

        end


        if(pre_status_matrix(i)==3 && pre_next_status_timer(i)>1) %SIFS sending ack next time slot;
            status(i)=3;
            timer(i)= pre_next_status_timer(i)-1;

        end


        if(pre_status_matrix(i)==5 && pre_next_status_timer(i)>1) %SIFS sending ack next time slot;
            status(i)=5;
            timer(i)= pre_next_status_timer(i)-1;

        end

        if(pre_status_matrix(i)==2 && pre_next_status_timer(i)==1) %DIFS end start sending data;
            status(i)=3;
             timer(i) = frame_size(i);
             flag(i)=1;
        end

    end


end