GSM系统消息类别与携带的信息systeminformationtype1主要包含随机接入控制信息(RACH),小区频点分配表CA,在BCCH信道发送。主要消息内容如下:Cellchanneldescription1,3,5,7,9RACHcontrolparametersmaxRetransmission:(2)maximum4retransmissionsTX-integer:(14)32slotsusedcellbaraccess:(0)notbarredcallreestablishment:(1)notallowedaccesscontrolemergencycallallowed:(0)allMSsbarredclasses:空resetoctetsbandindication1800--------------------------------------------------------------------------------------------------------------------------------systeminformationtype2主要包含了随机接入控制信息(RACH),网络色码允许,邻近小区列表(BA1);(neighbourcelldescription,NCCpremitted,RACHcontrolparameters)。主要消息内容如下:neighbourcelldescriptionextind:theinformationelementcarriesthecompleteBAchannels:1,3,5,7,9,11,17NCCpermittedNCCpermittedvalues:01234567RACHcontrolparametersmaxRetransmission:(2)maximum4retransmissionsTX-integer:(14)32slotsusedcellbaraccess:(0)notbarredcallreestablishment:(1)notallowedaccesscontrolemergencycallallowed:(0)allMSsbarredclasses:空--------------------------------------------------------------------------------------------------------------------------------systeminformationtype2bis主要包含了随机接入控制信息(RACH)和邻近小区的扩展频点分配表(也是BA1的一部分),因为systeminformationtype2携带的频点分配表的频点个数是有限的,因而,2bis携带了BA1中其他的与systeminformationtype2同频段的频点信息。--------------------------------------------------------------------------------------------------------------------------------systeminformationtype2ter主要描述了邻近小区的扩展频点分配表(BA1表的一部分),只有双频手机会读取改小区,单频900或1800的手机会忽略该消息,因该消息携带的频点信息是与当前小区的频点处于不同频段的频点信息,这些信息对于单频手机而言是不需要的。主要消息内容如下:neighbourcelldescription2multibandreporting:themsshallreportthestrongestcell(fromotherband)baind:0channels:525527529--------------------------------------------------------------------------------------------------------------------------------systeminformationtype3主要包含了位置区标识,小区标识,随机接入控制信息(RACH),小区选择有关的参数,是最重要的系统消息。主要消息内容如下:cellidentity(ci):55055locationareaidentificationmobilecountrycode(MCC):460mobilenetworkcode(MNC):00locationareacode(LAC):29000ControlChannelDescriptionMSCR:MSCisrelease’99onwardsattach/deatachallowed(ATT):MSsinthecellshallapplyIMSIattachanddetachprocedure。BS-AG-BLKS-RES:2CCCH-CONF:1basicphysicalchannelusedforCCCH,notcombinedwithSDCCHsCBQ3:lumodenotsupportedBS-PA-MFRMS:2multiframesperiodT3212timeoutvalue:1hour(10*6)Celloptions(BCCH)DynamicARFCNmappingindicator(DN-ind):DynamicARFCNmappingisnotusedbytheplmnPowercontrolindicator(PWRC):PWRCSetDTXindicator:theMSsshalluseuplinkdiscontinuoustransmissionRADIO-LINK-TIMEOUT:64CellselectionparametersCELL-RESELECT-HYSTERESIS:8dBRxlevhysteresisforLA-reselectionMS-TXPWR-MAX-CCH:5ADDITIONALRESELECTPARAMIND(ACS):systeminformationtype16and17arenotbroadcastontheBCCHsHALFRATESUPPORT(NECI):NewestablishmentcausesarenotsupportedRXLEV-ACCESS-MIN:10RACHcontrolparametersmaxRetransmission:(2)maximum4retransmissionsTX-integer:(14)32slotsusedcellbaraccess:(0)notbarredcallreestablishment:(1)notallowedaccesscontrolemergencycallallowed:(0)allMSsbarredclasses:空RestOctetsselectionparametersCbq:0Cellreselectionoffset:0dbTemporaryoffset:0dbPenaltytime:20sPowerOffset:2dbSystemInformation2terindicator-notavailableEarlyclassmarksendingcontrol-explicityacceptedBCCHschedulingisnotsentinSI9GPRSindicatorRAcolor:1SI13position:SI13messageissentonBCCHNormThesendingofUTRANandCDMA2000classmarksendingmessengeriscontrolledbytheearlyclassmarksending--------------------------------------------------------------------------------------------------------------------------------systeminformationtype4主要包含了主要描述了位置区标识、随机接入控制信息(RACH)、小区选择参数以及可选的CBCH信道信息。它是必选的,在BCCH信道上发送,可选的IECBCH描述和MA在系统支持小区广播时描述了CBCH信道的配置和相应的频点信息。locationareaidentificationmobilecountrycode(MCC):460mobilenetworkcode(MNC):00locationareacode(LAC):29000CellselectionparametersCELL-RESELECT-HYSTERESIS:8dBRxlevhysteresisforLA-reselectionMS-TXPWR-MAX-CCH:5ADDITIONALRESELECTPARAMIND(ACS):systeminformationtype16and17arenotbroadcastontheBCCHsHALFRATESUPPORT(NECI):NewestablishmentcausesarenotsupportedRXLEV-ACCESS-MIN:10RACHcontrolparametersmaxRetransmission:(2)maximum4retransmissionsTX-integer:(14)32slotsusedcellbaraccess:(0)notbarredcallreestablishment:(1)notallowedaccesscontrolemergencycallallowed:(0)allMSsbarredclasses:空RestoctetsselectionparametersCbq:0Cellreselectionoffset:0dbTemporaryoffset:0dbPenaltytime:20sPowerOffset:2dbGPRSindicatorRAcolor:1SI13position:SI13messageissentonBCCHNormAdditionalparametersarenotsendinsysteminformationtype7and8--------------------------------------------------------------------------------------------------------------------------------systeminformationtype5主要包含了邻近小区的频点信息(即BA2表)。它是必选的,在SACCH信道上发送。与系统消息2不同的是,手机可以在通话状态下读取系统消息5中描述的频点,在测量报告中上报邻近小区的相关信息,作为切换的依据。同样,对PHASE1的900手机而言,它只认识系统消息5描述的邻近小区频点而忽略5BIS和5TER消息携带的邻近小区频点信息。neighborcelldescriptionextind:theinformationelementcarriesthecompleteBABAIND:0Channels:13579…--------------------------------------------------------------------------------------------------------------------------------systeminformationtype5ter主要包含了TER主要描述了邻近小区的频点信息(也是BA2表的一部分)。它在SACCH信道上发送。同