updatequeueafterschedule.m

ofdm系统当中的接纳控制技术 程序当中有三种接纳控制算法的对比 都是基于ofdm系统的

function [QueueLength,QueueFront] = ...
UpdateQueueAfterSchedule(ATTrafficType,ATDelayRequire,N,Slot,SimTime,ATRate,  ATQueueLength, ATQueueFront,ATQueueEnd, SlotTime)

global ATQueue;
OutData = floor(ATRate * SlotTime);
QueueLength = ATQueueLength;

QueueFront = ATQueueFront;
QueueEnd = ATQueueEnd;
global ATDelay;
global ATPacketDropNum;
MaxArrayLength = 5000;
% arrayIndex = mod(Slot-1,MaxArrayLength)+1;
for a = 1:N
  if ATTrafficType(a) == 4
    if OutData(a) == 0
        for packetIndex = QueueFront(a):QueueEnd(a)
            temp = mod(packetIndex-1,MaxArrayLength)+1;
            if ATQueue(temp,a) > 0;
                if ATDelay(temp,a) == ATDelayRequire(a)-1 && ATTrafficType(a) == 4
                    ATQueue(temp,a) = 0;
                    QueueFront(a) = min(packetIndex+1,QueueEnd(a));%因为到达最大时延，RT业务丢失一个包
                    ATPacketDropNum(a) = ATPacketDropNum(a) + 1;
                else
                    ATDelay(temp, a) = ATDelay(temp, a) + 1;
                end
            end
        end

%         continue;
    else
%     time = QueueFront(a);
        while OutData(a) > 0 && OutData(a) >= (ATQueue(mod(QueueFront(a)-1,MaxArrayLength)+1,a))
            OutData(a) = OutData(a) - ATQueue(mod(QueueFront(a)-1,MaxArrayLength)+1,a);
            ATQueue(mod(QueueFront(a)-1,MaxArrayLength)+1,a) = 0;
            QueueFront(a) = min(QueueFront(a) + 1,QueueEnd(a));
        end

        if QueueFront(a) < SimTime
            ATQueue(mod(QueueFront(a)-1,MaxArrayLength)+1,a) = ATQueue(mod(QueueFront(a)-1,MaxArrayLength)+1,a) - OutData(a);
        end
        for packetIndex = QueueFront(a):QueueEnd(a)
            temp = mod(packetIndex-1,MaxArrayLength)+1;
            if ATQueue(temp,a) > 0;
                if ATDelay(temp,a) == ATDelayRequire(a)-1 && ATTrafficType(a) == 4
                    ATQueue(temp,a) = 0;
                    QueueFront(a) = min(packetIndex+1,QueueEnd(a));%因为到达最大时延，RT业务丢失一个包
                    ATPacketDropNum(a) = ATPacketDropNum(a) + 1;
                else
                    ATDelay(temp, a) = ATDelay(temp, a) + 1;
                end
            end
        end
    end
  elseif ATTrafficType(a) == 2
      
  end
      
%     Delay(Slot, a) = Slot - time;
end