mf001002 bss信令详解issue10辅导讲义Word格式.docx
《mf001002 bss信令详解issue10辅导讲义Word格式.docx》由会员分享,可在线阅读,更多相关《mf001002 bss信令详解issue10辅导讲义Word格式.docx(111页珍藏版)》请在冰豆网上搜索。
1.3MessageType1-19
1.3.1ChannelType1-22
1.3.2Layer3HeaderInformation1-30
1.3.3Priority1-30
1.3.4CircuitIdentityCode1-31
1.3.5DownlinkDTXFlag1-32
1.3.6InterferenceBandToBeUsed1-32
1.3.7ClassmarkInformationType21-33
1.3.8GroupCallReference1-33
1.3.9TalkerFlag1-34
1.3.10LSAAccessControlSuppression1-34
1.3.11RRCause1-34
1.3.12CellIdentifier1-34
1.3.13ChosenChannel1-36
1.3.14ChosenEncryptionAlgorithm1-38
1.3.15CircuitPool1-38
1.3.16SpeechVersion1-43
1.3.17LSAIdentifier1-43
1.3.18Cause1-43
1.3.19CircuitPoolList1-47
1.3.20EncryptionInformation1-47
1.3.21ClassmarkInformationType11-48
1.3.22ClassmarkInformationType31-49
1.3.23CurrentChannelType11-49
1.3.24LSAInformation1-50
1.3.25OldBSStoNewBSSinformation1-52
1.3.26ConfigurationEvolutionIndication1-53
1.3.27ResponseRequest1-53
1.3.28CellIdentifierList1-54
1.3.29QueuingIndicator1-58
1.3.30Layer3Information1-59
1.3.31IMSI1-59
1.3.32TMSI1-59
1.3.33ChannelNeeded1-60
1.3.34eMLPPPriority1-60
1.3.35CipherResponseMode1-61
1.3.36Layer3MessageContents1-61
1.3.37LSAIdentifierList1-61
1.3.38APDU1-62
第2章Abis-InterfaceKeyMessages2-63
2.1MessageContents2-63
2.1.1CHANNELREQUIRED2-63
2.1.2PAGINGCOMMAND2-64
2.1.3CHANNELACTIVATION2-64
2.1.4CHANNELACTIVATIONACKNOWLEDGE2-66
2.1.5CHANNELACTIVATIONNEGATIVEACKNOWLEDGE2-67
2.1.6IMMEDIATEASSIGNCOMMAND2-67
2.1.7CONNECTIONFAILUREINDICATION2-67
2.1.8ERRORINDICATION2-68
2.1.9ENCRYPTIONCOMMAND2-68
2.1.10HANDOVERDETECTION2-69
2.1.11MODEMODIFY2-69
2.1.12MODEMODIFYACKNOWLEDGE2-70
2.1.13MODEMODIFYNEGATIVEACKNOWLEDGE2-70
2.1.14ESTABLISHINDICATION2-70
2.2Signalingelementcoding2-71
2.2.1Messagediscriminator2-71
2.2.2MESSAGETYPE2-72
2.2.3ChannelNumber2-74
2.2.4RequestReference2-75
2.2.5AccessDelay2-75
2.2.6PhysicalContext2-75
2.2.7PagingGroup2-76
2.2.8MSIdentity2-76
2.2.9ChannelNeeded2-76
2.2.10eMLPPPriority2-77
2.2.11ActivationType2-77
2.2.12ChannelMode2-78
2.2.13ChannelIdentification2-80
2.2.14Encryptioninformation2-81
2.2.15Handoverreference2-82
2.2.16BSPower2-82
2.2.17MSPower2-82
2.2.18TimingAdvance2-83
2.2.19MSPowerParameters2-83
2.2.20BSPowerParameters2-84
2.2.21SACCHInformation2-84
2.2.22UIC2-85
2.2.23Mainchannelreference2-86
2.2.24MultiRateconfiguration2-86
2.2.25MultiRateControl2-86
2.2.26SupportedCodeTypes2-87
2.2.27FrameNumber2-89
2.2.28Cause2-89
2.2.29FullImmediateAssignInfo2-93
2.2.30LinkIdentifier2-94
2.2.31RLMCause2-94
2.2.32L3Information(messagename)2-95
课程说明
课程介绍
本课程介绍了GSM系统中A接口、Abis接口的各种消息的格式、各域的含义及用途,是学习GSM系统的基础。
本课程的主要内容如下:
A接口消息汇总、各消息内容详细解释。
Abis接口消息汇总、各消息内容详细解释。
课程目标
完成本课程的学习后,您应该能够:
●掌握各信令的组成和用途
●能够结合信令内容,分析网络问题
相关资料
《BSS信令分析手册》V4.0
Chapter1A-InterfaceKeyMessages
Thereisnogeneralrulefortheorderofsignalingelements:
ithappensthatthesameelementsappearinvariousordersdependingonthemessage.ThemessagesofA-interfacedescribedherearebasedonPhase2+GSM0808version7.6.0Release1998.
ThekeyBSSMAPmessagesarelistedinthefollowingtable:
Messagename
Reference
ASSIGNMENTREQUEST
1.1.1
ASSIGNMENTCOMPLETE
1.1.2
ASSIGNMENTFAILURE
1.1.3
HANDOVERREQUEST
1.1.4
HANDOVERREQUESTACKNOWLEDGE
1.1.5
HANDOVERREQUIRED
1.1.6
HANDOVERREQUIREDREJECT
1.1.7
HANDOVERCOMMAND
1.1.8
HANDOVERCOMPLETE
1.1.9
HANDOVERFAILURE
1.1.10
HANDOVERPERFORMED
1.1.11
PAGING
1.1.12
CLEARREQUEST
1.1.13
CLEARCOMMAND
1.1.14
CLASSMARKREQUEST
1.1.15
CLASSMARKUPDATE
1.1.16
CIPHERMODECOMMAND
1.1.17
CIPHERMODECOMPLETE
1.1.18
CIPHERMODEREJECT
1.1.19
COMPLETELAYER3INFORMATION
1.1.20
1.1MessageContents
1.1.1ASSIGNMENTREQUEST
ThismessageissentfromtheMSCtotheBSSviatherelevantSCCPconnectioninordertorequesttheBSStoassignradioresource(s),theattributesofwhicharedefinedwithinthemessage.
Themessagemayalsoincludetheterrestrialcircuittobeused.
INFORMATIONELEMENT
REFERENCE
DIRECTION
TYPE
LEN
MessageType
1.2.1
MSC-BSS
M
1
ChannelType
1.2.2
5-10
Layer3HeaderInformation
1.2.3
O(3)
4
Priority
1.2.4
O
3
CircuitIdentityCode
1.2.5
O
(1)
DownlinkDTXFlag
1.2.6
O
(2)
2
InterferenceBandToBeUsed
1.2.7
ClassmarkInformation2
1.2.8
O(4)
4-5
GroupCallReference
1.2.9
O(5)
3-8
TalkerFlag
1.2.10
O(6)
LSAAccessControlSuppression
1.2.11
MSC-BSS
O(8)
1.ThiselementisincludedwhentheMSCallocatestheA-interfacecircuitsandthechanneltypeInformationElementindicatesspeechordata,andonlyinthosecases.
2.ThiselementmaybeincludedinthecaseofaspeechTCH,andonlyinthiscase.Ifnotincluded,thishasnoimpactontheDTXfunctionintheBSS.
3.Thisinformationelementdoesn’tserveanyusefulpurpose.MSCsshouldnotsendtheinformationelementunlessitisrequiredbytherecipients(duetotheneedtointerworkwitholderversionsoftheprotocol).Itisexpectedthatinfutureversionsof08.08,thisinformationelementwillbedeletedfromthismessage.
4.TheseelementsmaybeincludediftheinformationisknownbytheMSC.
5.ThismaybeincludedbytheMSCforeitheratalkingorlisteningsubscriberinagroupcall.
6.Thisinformationelementisincludedforgroupcalls,whenthisisincludeditindicatesthatthemobileisatalkerinthecallelsethemobileisalistener.
7.TheinformationisindicatedbytheMSCifknown.
8.ThisinformationelementisincludedifLSAaccesscontrolfunctionshallbesuppressedintheBSS.
1.1.2ASSIGNMENTCOMPLETE
TheASSIGNMENTCOMPLETEmessageissentfromtheBSStotheMSCandindicatesthattherequestedassignmenthasbeencompletedcorrectly.
ThemessageissentviatheBSSAPSCCPconnectionassociatedwiththededicatedresource(s).
INFORMATIONELEMENT
1.2.1
BSS-MSC
M
RRCause
1.2.12
O
CircuitIdentityCode
1.2.5
BSS-MSC
O(4)
CellIdentifier
1.2.13
O
(1)
3-10
ChosenChannel
1.2.14
O(3)
ChosenEncryptionAlgorithm
1.2.15
O(5)
CircuitPool
1.2.16
O
(2)
SpeechVersion(Chosen)
1.2.17
O(6)
LSAIdentifier
1.2.18
O(7)
5
1.Thecellidentifierisusedtoindicateanewcell,ifduringtheassignmenttheservingcellhaschanged.
2.ShallbeincludedwhenseveralcircuitpoolsarepresentontheBSSMSCinterfaceandacircuitwasallocatedbytheASSIGNMENTREQUESTmessage.
3.Includedatleastwhenthechannelrate/typechoicewasdonebytheBSS.
4.TheCircuitIdentityCodeinformationelementisincludedmandatorybytheBSSiftheBSSallocatestheA-interfacecircuitsandacircuitisneeded.
5.IncludedatleastwhentheencryptionalgorithmhasbeenchangedbytheBSS.
6.IncludedatleastwhenthespeechversionchoicewasdonebytheBSS.
7.ShallbeincludedifcurrentLSAintheservingcellhasbeenidentified(seeGSM03.73).NotincludedmeansthatthereisnocurrentLSAintheservingcell.
1.1.3ASSIGNMENTFAILURE
TheASSIGNMENTFAILUREmessageissentfromtheBSStotheMSCviatherelevantSCCPconnection.ItindicatesthattherehasbeenafailureintheassignmentprocessattheBSSandthattheassignmentprocedurehasbeenaborted.
INFORMATIONELEMENT
1
Cause
1.2.19
3-4
1.2.12
2
O
(1)
CircuitPoolList
1.2.20
V
1.ShallbeincludedwhenseveralcircuitpoolsarepresentontheBSSMSCinterface.
2.Maybeincludedwhencauseis"
circuitpoolmismatch"
or"
switchcircuitpool"
toindicatecircuitpoolpreferences.
TypicalCausevaluesare:
-radiointerfacemessagefailure,
-OandMintervention,
-equipmentfailure,
-noradioresourceavailable,
-requestedterrestrialresourceunavailable,
-requestedtranscoding/rateadaptionunavailable,
-terrestrialresourcealreadyallocated,
-invalidmessagecontents,
-radiointerfacefailure-reversiontooldchannel,
-directedretry,
-circuitpoolmismatch,
-switchcircuitpool.
requestedspeechversionunavailable.
1.1.4HANDOVERREQUEST
ThismessageissentfromtheMSCtotheBSSviatherelevantSCCPconnectiontoindicatethattheMSistobehandedovertothatBSS.
MSC-BSS
1.2.2
5-10
EncryptionInformation
1.2.21
M
(1)
3-n
ClassmarkInformation1Or
1.2.22
M#
1.2.8
M(