SMS Validity Period 有效期各字段含义.doc

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1、TIA/EIA637-A4.5.6ValidityPeriod-RelativeTheValidityPeriod-RelativesubparameterindicatestotheMessageCenterthetimeperiod,beginningfromthetimethemessageisreceivedbytheMessageCenter,afterwhichthemessageshouldbediscardedifnotdeliveredtothedestination.Mayalsobeused

2、toindicatethetimeperiodtoretainamessagesenttoamobilestation.TheValidityPeriod-Relativesubparameterhasthefollowingfixed-lengthformat:FieldLength(bits)SUBPARAMETER_ID8SUBPARAM_LEN8VALIDITY8SUBPARAMETER_ID-Subparameteridentifier.Thisfieldshallbesetto‘00000101’.S

3、UBPARAM_LEN-Subparameterlength.Thisfieldshallbesetto‘00000001’.VALIDITY-Validityperiod.ThisfieldshallbesetaccordingtoTable4.5.6-1.Table4.5.6-1.CodingofRelativeTimeFieldsFieldvalue(decimal)RelativeTimePeriodValidityPeriodDeliveryTime0to143(value+1)´5minutesXX1

4、44to16712hours+((value–143)´30minutes)XX168to196(value-166)daysXX197to244(value-192)weeksXX245IndefiniteX246Immediate[1]X247Validuntilmobilebecomesinactive/DeliverwhenmobilenextbecomesactiveXX248Validuntilregistrationareachanges,discardifnotregisteredX249to25

5、5Reserved[1]Indicatesthatthemessageshouldbediscardedifnotimmediatelydeliverable.Ifthisvalueispresentinamessagereceivedbyamobilestation,themobilestationshoulddiscardthemessageafterithasbeendisplayed.4-1