atadmissioncontrol.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  [SuccessAdmission,FailureAdmission] = ...
ATAdmissionControl(RealSCNum,ACDynamicRatio,ATRate,ATStarveRate,N,ATTrafficType,SlotTime,AdmissionControlStrategy,ATSuccessAdmission,ATFailureAdmission);%这一步实现动态产生用户请求，完成接入控制

global ATActive;
global AverageStarveRate;
global ATRTTrafficTimer;
SuccessAdmission = ATSuccessAdmission;
global ATDeactiveTimer;
FailureAdmission = ATFailureAdmission;
global ATTotalActiveTime;
global AverageRealSCnum;
BETA = 0.01;    %指数平滑因子，100个时隙
ACTHRESHHOLD = 100000;%bps
SCThrreshhold = 250;
FREEINTERVAL = 3;   %unit:s
MAX = 10;   %s
MIN = 6;    %s

if AdmissionControlStrategy == 0
    for a = 1:N
        if ATTrafficType(a) == 4
            if ATActive(a) == 1   %处于传输激活状态
                if ATRTTrafficTimer(a) > 0    %传输还没有结束
                    ATRTTrafficTimer(a) = ATRTTrafficTimer(a) - 1;  %传输时隙减少1
                    continue;
                else            %传输Timer到时
                    ATRTTrafficTimer(a) = max(0,ATRTTrafficTimer(a));
                    ATActive(a) = 0;   %设置为非激活状态
                    ATDeactiveTimer(a) = floor(exprnd(FREEINTERVAL)/SlotTime);  %设置空闲计时器
                end
            else    %移动台处于非传输状态
                if ATDeactiveTimer(a) > 0 %还处于空闲状态
                    ATDeactiveTimer(a) = ATDeactiveTimer(a) - 1;
                    continue;
                else
                    ATDeactiveTimer(a) = max(0,ATDeactiveTimer(a));
                    ATActive(a) = 1;
                    ATRTTrafficTimer(a) = floor((MIN+(MAX-MIN)*rand())/SlotTime);
                    ATTotalActiveTime(a) = ATTotalActiveTime(a) + ATRTTrafficTimer(a);
                    SuccessAdmission(a) = SuccessAdmission(a) + 1;
                end
            end
        end
%         if ATTrafficType(a) == 2    %对FTP用户作接入控制
%             if ATActive(a) == 1
%                 continue;
%             else
%                 if sumStarveRate > ACTHRESHHOLD
%                     FailureAdmission(a) = FailureAdmission(a) + 1;
%                 else
%                     Active(a) = 1;
%                     SuccessAdmission(a) = SuccessAdmission(a) + 1;
%                 end
%             end
%         end
    end
elseif AdmissionControlStrategy == 1    %采用申请速率和实际传输速率的差来判断接入
    AverageStarveRate = (1-BETA)*AverageStarveRate + BETA*ATStarveRate;
    sumStarveRate = sum(AverageStarveRate);
    for a = 1:N
        if ATTrafficType(a) == 4
            if ATActive(a) == 1   %处于传输激活状态
                if ATRTTrafficTimer(a) > 0    %传输还没有结束
                    ATRTTrafficTimer(a) = ATRTTrafficTimer(a) - 1;  %传输时隙减少1
                    continue;
                else            %传输Timer到时
                    ATRTTrafficTimer(a) = max(0,ATRTTrafficTimer(a));
                    ATActive(a) = 0;   %设置为非激活状态
                    ATDeactiveTimer(a) = floor(exprnd(FREEINTERVAL)/SlotTime);  %设置空闲计时器
                end
            else    %移动台处于非传输状态
                if ATDeactiveTimer(a) > 0 %还处于空闲状态
                    ATDeactiveTimer(a) = ATDeactiveTimer(a) - 1;
                    continue;
                else
                    ATDeactiveTimer(a) = max(0,ATDeactiveTimer(a));
                    if sumStarveRate > ACDynamicRatio*ACTHRESHHOLD
                        ATActive(a) = 0;
                        ATRTTrafficTimer(a) = 0;%floor(60+(100-60)*rand())/SlotTime;
                        FailureAdmission(a) = FailureAdmission(a) + 1;
                        ATDeactiveTimer(a) = floor(exprnd(FREEINTERVAL)/SlotTime);
                    else
                        ATActive(a) = 1;
                        ATRTTrafficTimer(a) = floor((MIN+(MAX-MIN)*rand())/SlotTime);
                        ATTotalActiveTime(a) = ATTotalActiveTime(a) + ATRTTrafficTimer(a);
                        SuccessAdmission(a) = SuccessAdmission(a) + 1;
                    end
                end
            end
        end
%         if ATTrafficType(a) == 2    %对FTP用户作接入控制
%             if ATActive(a) == 1
%                 continue;
%             else
%                 if sumStarveRate > ACTHRESHHOLD
%                     FailureAdmission(a) = FailureAdmission(a) + 1;
%                 else
%                     Active(a) = 1;
%                     SuccessAdmission(a) = SuccessAdmission(a) + 1;
%                 end
%             end
%         end
    end
elseif AdmissionControlStrategy == 2
    AverageRealSCnum = (1-BETA)*AverageRealSCnum + BETA*RealSCNum;
    for a = 1:N
        if ATTrafficType(a) == 4
            if ATActive(a) == 1   %处于传输激活状态
                if ATRTTrafficTimer(a) > 0    %传输还没有结束
                    ATRTTrafficTimer(a) = ATRTTrafficTimer(a) - 1;  %传输时隙减少1
                    continue;
                else            %传输Timer到时
                    ATRTTrafficTimer(a) = max(0,ATRTTrafficTimer(a));
                    ATActive(a) = 0;   %设置为非激活状态
                    ATDeactiveTimer(a) = floor(exprnd(FREEINTERVAL)/SlotTime);  %设置空闲计时器
                end
            else    %移动台处于非传输状态
                if ATDeactiveTimer(a) > 0 %还处于空闲状态
                    ATDeactiveTimer(a) = ATDeactiveTimer(a) - 1;
                    continue;
                else
                    ATDeactiveTimer(a) = max(0,ATDeactiveTimer(a));
                    if AverageRealSCnum > SCThrreshhold
                        ATActive(a) = 0;
                        ATRTTrafficTimer(a) = 0;%floor(60+(100-60)*rand())/SlotTime;
                        FailureAdmission(a) = FailureAdmission(a) + 1;
                        ATDeactiveTimer(a) = floor(exprnd(FREEINTERVAL)/SlotTime);
                    else
                        ATActive(a) = 1;
                        ATRTTrafficTimer(a) = floor((MIN+(MAX-MIN)*rand())/SlotTime);
                        ATTotalActiveTime(a) = ATTotalActiveTime(a) + ATRTTrafficTimer(a);
                        SuccessAdmission(a) = SuccessAdmission(a) + 1;
                    end
                end
            end
        end
    end
end
%     averageStarveRate = (1-BETA)*averageStarveRate + BETA*ATRate;;%注意，此时AverageStarveRate用来表示系统的平均吞吐量
%     sumRate = sum(averageStarveRate);
%     RateREQ = sum(ATRate + ATStarveRate);
%     for a = 1:N
%         if ATTrafficType(a) == 4
%             if Active(a) == 1   %处于传输激活状态
%                 if RTTrafficTimer(a) > 0    %传输还没有结束
%                     RTTrafficTimer(a) = RTTrafficTimer(a) - 1;  %传输时隙减少1
%                     continue;
%                 else            %传输Timer到时
%                     RTTrafficTimer(a) = max(0,RTTrafficTimer(a));
%                     Active(a) = 0;   %设置为非激活状态
%                     DeactiveTimer(a) = floor(exprnd(3)/SlotTime);  %设置空闲计时器
%                 end
%             else    %移动台处于非传输状态
%                 if DeactiveTimer(a) > 0 %还处于空闲状态
%                     DeactiveTimer(a) = DeactiveTimer(a) - 1;
%                     continue;
%                 else
%                     DeactiveTimer(a) = max(0,DeactiveTimer(a));
%                     if sumRate > ACDynamicRatio*ACTHRESHHOLD
%                         Active(a) = 0;
%                         RTTrafficTimer(a) = 0;%floor(60+(100-60)*rand())/SlotTime;
%                         FailureAdmission(a) = FailureAdmission(a) + 1;
%                         DeactiveTimer(a) = floor(exprnd(3)/SlotTime);
%                     else
%                         Active(a) = 1;
%                         RTTrafficTimer(a) = floor((6+(10-6)*rand())/SlotTime);
%                         TotalActiveTime(a) = TotalActiveTime(a) + RTTrafficTimer(a);
%                         SuccessAdmission(a) = SuccessAdmission(a) + 1;
%                     end
%                 end
%             end
%         end
% %         if ATTrafficType(a) == 2    %对FTP用户作接入控制
% %             if ATActive(a) == 1
% %                 continue;
% %             else
% %                 if sumStarveRate > ACTHRESHHOLD
% %                     FailureAdmission(a) = FailureAdmission(a) + 1;
% %                 else
% %                     Active(a) = 1;
% %                     SuccessAdmission(a) = SuccessAdmission(a) + 1;
% %                 end
% %             end
% %         end
%     end
% end