Radwin Transportation FiberinMotion - Method of Operation

FinMDeploymentGuide Release4.5.10 4‐20
MethodofOperation ConfiguringtheRadio Network
4.5.3MethodofOperation
Theco‐channelneighborinterferencemitigationoptionworksasfollows:
Splittimeslots:TBS1isconfiguredtosplitthetimeslotsintheframebetweenitandbetween
its“co‐channelneighbor”(inourcase,withthreefrequencies,it’swithTBS4)
1
.The
resultforthefirstco‐channelneighborpairisthatTBS1transmitsonhalfofthetime
slots,andTBS4transmitsontheotherhalf.SeeFigure 4‐11.
TMU1isinstructedtoreceivethosetimeslotsthatwereassignedtoTBS1,andignore
others.
Noticethatinourexample,TBS1andTBS7areassignedthesametimeslots.Thisis
notaproblembecauseTBS1andTBS7aresofarawayfromeachotherthattheir
mutualsignalsdonotinterfere.
Repeatforallco‐channelneighbors:ThisconfigurationisepeatedwithTBS2vs.TBS5,again
withTBS3vs.TBS6,andevenwithTBS7vs.TBS4,andsoondowntheline.
‐74to‐71 18orless No
‐78to‐75 Grea terthan16 Yes
‐78to‐75 16orless No
‐79orbelow Greaterthan13 Yes
‐79orbelow 13orless No
1. WhichTBSreceiveswhichtimeslotsisdeterminedbytheCNIndexparameter(seepage 4‐24)
Table4‐4:Thresholdsignalstrengthlevels‐de‐activationcriteria
SignalStrengthbetween
TBSandTMU
Differenceinsignal
strengthbetweenTBS
anditsco‐channel
neighbor
De‐Activate
Option?