update_mobile_structres_before_frame2.m

基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.

function [st_channelGrid,st_initConfig,st_mobileStations,MobileIdCnt,st_baseStation,st_measurement]= update_mobile_structres_before_frame2(st_initConfig,st_channelGrid,st_mobileStations,MobileIdCnt,st_baseStation,st_measurement)
%__________________________________________________________________________
% Type:                 :   Function Header
% Function name         :   ofdma_sfn_Cellular_la_dl_simulator
% input                 :   st_channelGrid,st_initConfig,st_mobileStations,st_baseStations
% output                :   st_channelGrid,st_initConfig,st_mobileStations,st_baseStations
%                       :
% calling functions     :   input_config
% called functions      :
% Function Description  :       % Update mobile structure.
%   its acceleraion
%   its position, therefore
%   its pathloss
%   settings of channel object
%       its history to zero. No need to store history now
%       its rms delay spread as per the distance.
%       its doppler as per the new velocity
%     ALSO UPDATE REQUIRED PARAMETERS
%__________________________________________________________________________

% Update new velocity and location

% if st_initConfig.nFrmCnt > 1
%     figure(1);
%     hold on;
%     plot(st_initConfig.locMS,'g.');
% end
% Check each mobile, if the remaining file size to be trasmitted is less
% than zero. If so, then initiate a new mobile in that handle
new_mobile_handles=[];
finished_locs=nan(1,st_initConfig.nuMob);%[];
bad_mobiles_loc=nan(1,st_initConfig.nuMob);%[];
old_mobile_handles=[];
%ch_matrixPointer = ones(1,st_initConfig.chnums);
for lp_nmob =1:st_initConfig.nuMob
    % IDENTIFY MOBILE WHICH ARE NOT ABLE TO GET THROUGH BUT ARE SIMPLY BLOCKING
    % THE NETWORK RESOURCES.
    % TAKE THEM AWAY FROM THE NETWORK, i.e. DO NOT SERVE THEM ANY MORE AND MARK
    % THEM WITH A YELLOW STAR

    if st_initConfig.nFrmCnt > st_initConfig.MAX_OFDM_SYMBOL_WAIT...
            && mean(st_mobileStations(lp_nmob).sinrFeedBackNoChErr) < 10^((st_initConfig.SINR_Threshold)/10)...
            && (st_mobileStations(lp_nmob).RemFileSz(st_initConfig.nFrmCntSlot)...
            ==  st_mobileStations(lp_nmob).RemFileSz(mod((st_initConfig.nFrmCntSlot-st_initConfig.MAX_OFDM_SYMBOL_WAIT-1),st_initConfig.nuFrmPerSlot)+1))...
            && (st_mobileStations(lp_nmob).MobNumber(st_initConfig.nFrmCntSlot)...
            ==  st_mobileStations(lp_nmob).MobNumber(mod((st_initConfig.nFrmCntSlot-st_initConfig.MAX_OFDM_SYMBOL_WAIT),st_initConfig.nuFrmPerSlot)+1)),

        bad_mobiles_loc=st_initConfig.locMS(lp_nmob);
        st_mobileStations(lp_nmob).RemFileSz(st_initConfig.nFrmCntSlot) = -9999;
        st_measurement.outageCnt=st_measurement.outageCnt+1;
    end

    if st_mobileStations(lp_nmob).RemFileSz(st_initConfig.nFrmCntSlot)<=0
        new_mobile_handles = [new_mobile_handles lp_nmob];% Store the mobile handle number
        % set state to finished only when it's not bad, and not during the
        % first frame transmission.
        if st_mobileStations(lp_nmob).RemFileSz(st_initConfig.nFrmCntSlot)~=-9999 && st_initConfig.nFrmCnt > 1,
            finished_locs(lp_nmob)=st_initConfig.locMS(lp_nmob);
        end
        % to be used in channel creation
        MobileIdCnt=MobileIdCnt+1;
        st_mobileStations(lp_nmob).MobNumber(st_initConfig.nFrmCntSlot) = MobileIdCnt;
        st_mobileStations(lp_nmob).RemFileSz(st_initConfig.nFrmCntSlot)=st_initConfig.MaxFileSz;%*(1 + randint(1,1,st_initConfig.tast_file_size_max_ratio*100)/100);
        st_mobileStations(lp_nmob).MobActiveCnt = 1;
        % This value might need to be changed.
        st_initConfig.locMS(lp_nmob)=nan;
        st_initConfig.veloMS(lp_nmob)=nan;
        st_mobileStations(lp_nmob).targetUEthpt = st_initConfig.targetUEthpt;
    else
        % Store the handles for the mobile handlers who will continue with
        % the same old mobiles
        old_mobile_handles=[old_mobile_handles lp_nmob];
        st_mobileStations(lp_nmob).MobNumber(st_initConfig.nFrmCntSlot) = st_mobileStations(lp_nmob).MobNumber(mod(st_initConfig.nFrmCntSlot-2,st_initConfig.nuFrmPerSlot)+1);
        st_mobileStations(lp_nmob).MobActiveCnt = st_mobileStations(lp_nmob).MobActiveCnt + 1;
    end
end
st_baseStation.new_mobile_handles=new_mobile_handles; % show results every time

% as of now this function will create a random drop of users this will be
% changed very soon where users who have finished trasmitting will quit the
% system while new users will join: This latter part has been accomplised
[st_initConfig.locMS,st_initConfig.veloMS]=...
    mobmoveScale(st_initConfig.locMS,st_initConfig.veloMS,st_initConfig.aMean,st_initConfig.vMean,...
    st_initConfig.dT,st_initConfig.rombvec,st_initConfig.centerBsLoc,st_initConfig.locBS(st_initConfig.desiredBsIdx),st_initConfig.dmin);

% % Store the location and velocities of the old mobiles. This is needed,
% % since the mobmove function will be called several times and location of
% % the old mobiles would get updated, which is not desired. Therefore the
% % location and velocities of the old mobiles need to be restored to the
% % state of the last call
%
switch st_initConfig.handOffFlg
    case 'nohandoff'
        % only continue if there are new mobiles. reduce complexity
        locMStemporary=st_initConfig.locMS;
        veloMStemporary=st_initConfig.veloMS;
        all_mobile_index=1:st_initConfig.nuMob;
        new_mobiles_flag = isempty(st_baseStation.new_mobile_handles); % New mobile connection flag
        while new_mobiles_flag == 0 % While all new mobiles are not ok
            g = threeSectorpathGain(locMStemporary,st_initConfig.locBS,st_initConfig.fib,st_initConfig.rombvec,st_initConfig.attConst,st_initConfig.alpha, st_initConfig.sigma, st_initConfig.raa, st_initConfig.lobeVector, st_channelGrid.lognmapShadow,st_channelGrid.mapvecShadow, st_initConfig.sps, st_initConfig.nuCluster, st_initConfig.ncell_per_cluster,st_initConfig.dmin);
            [val,mob_idx]=max(g,[],2);
            new_mobile_handles_ref=all_mobile_index(mob_idx~=st_initConfig.desiredBsIdx); % store the 'NEW mobile' handler
            if ~isempty(new_mobile_handles_ref)% if at least one NEW mobile is not connected to the BS 2 then
                locMStemporary(new_mobile_handles_ref)=nan;% make those indexes nan so that mobmove can assign them new values
                veloMStemporary(new_mobile_handles_ref)=nan;
                [locMStemporary,veloMStemporary]=...
                    mobmoveScale(locMStemporary,veloMStemporary,st_initConfig.aMean,st_initConfig.vMean,...
                    st_initConfig.dT,st_initConfig.rombvec,st_initConfig.centerBsLoc,st_initConfig.locBS(st_initConfig.desiredBsIdx),st_initConfig.dmin);
            else
                new_mobiles_flag = 1;
            end
        end
        st_initConfig.locMS(new_mobile_handles)=locMStemporary(new_mobile_handles);
        st_initConfig.veloMS(new_mobile_handles)=veloMStemporary(new_mobile_handles);
end

st_initConfig.veloMS(abs(st_initConfig.veloMS)>st_initConfig.max_veloms)=(1 + 2*st_initConfig.vFactor*randint(1,1,10000)/10000)*st_initConfig.min_veloms*exp(-j*randn);
st_initConfig.veloMS(abs(st_initConfig.veloMS)<st_initConfig.min_veloms)=(1 + 2*st_initConfig.vFactor*randint(1,1,10000)/10000)*st_initConfig.min_veloms*exp(-j*randn);

distance_matrix=abs(repmat((st_initConfig.locMS),1,length(st_initConfig.locBS))-  repmat(st_initConfig.locBS,length(st_initConfig.locMS),1))/1e3;
for lp_nmob=st_baseStation.new_mobile_handles
    for lp_nBs=1:st_initConfig.nuBs;%CellPerCluster
        for lp_nTxAntenna=1:st_initConfig.nuAntennaBS
            for lp_nRxAntenna=1:st_initConfig.nuAntennaMS
                st_mobileStations(lp_nmob).ch_idx(lp_nBs,lp_nTxAntenna,lp_nRxAntenna) = randint(1,1,[st_initConfig.chnums_min st_initConfig.chnums_max]);
                tmp = randint;
                if tmp == 0,
                    tmp = -1;
                end
                st_mobileStations(lp_nmob).ch_step(lp_nBs,lp_nTxAntenna,lp_nRxAntenna) = tmp;
            end
        end
    end
end
st_channelGrid.distance_matrix=distance_matrix;