idle mode

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LTE Notes - Idle Mode

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IDLE MODECell selectionThere are QRXLEVMIN and QQUALMIN parameters (as in UMTS) to modify access criteria.Pcompensation max(PEMAX PPowerClass, 0), pMaxServingCell, pMaxGeran I didnt undertand this- PMAX (max UE power)- Criteria for camping of Less power UEs is hard, pMaxServingCell 1000 ReselectionStart Reselection:- SINTRASEARCH: threshold for intra freq cell reselection- SNONINTRASEARCH: threshold for IRAT reselection- TcrMaxConnMode (mobility calc) T_CRMAX_30S to T_CRMAX_60S will discourage reselection but increase precision, celResTiF, sIntrasearch, sNonIntrsearch I didnt undertand this- QHYSTSFHIGH: additional hysteresis- QRXLEVMINOFFSET: additional QRXLEVMIN offset- TRESELECTIONRAT: reselection timer for IRAT (UTRAN or GERAN, depending on parameter, there should be one for each)Reselection decision:- IDLEQHYST1S: Hysteresis for current cell as in UMTS- QOFFSETCELLEUTRAN: offset value for specific cell- CELLRESELPRIORITY: reselection priority for certain cell- NCELLRESELECTIONHIGH: to set the high mobility state (there are high, medium and low mobility states depending on UE speed)- threshXHigh, threshXLow, tReselectionEutraSfHigh, threshServingLow 62, sPrioritySearch1 I didnt undertand this; I guess they are parameters related with the above information, but not sure- interFrqThrH, tResEutSF, eutResTiFHM, celResTiFHM, cellReSelPrio 3 to 0 will discourage, mobStateParamNCelChgHgh, mobStateParamTEval, qRxLevMinOffset 0 to 2dB, q-RxLevMin, spStResPars, qHystSfHigh, tReselEutr, timeToTriggerSfMedium, tResUtra, tResUtraSF, utrResTiFHM I didnt undertand this; I guess they are parameters related with the above information, but not sure- QRX level measured: criteria (Rs reference level for current cell, Rn reference level for neighbour cell): Rs = Qmeas,s + QHYST Rn = Qmeas,n + QOFFSET (or minus OFFSET, depending on vendor)- TEVALUATION: reselection evaluation time- T320: Time after RRCConnection Release in which cell reselection priority info supplied in RRCConnectionRelease must be observed I didnt undertand this HO