mf001002 bss信令详解issue10辅导讲义.docx
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mf001002bss信令详解issue10辅导讲义
课程MF001002
BSS接口信令详解
ISSUE1.0
目录
课程说明1
课程介绍1
课程目标1
相关资料1
第1章A-InterfaceKeyMessages1-1
1.1MessageContents1-2
1.1.1ASSIGNMENTREQUEST1-2
1.1.2ASSIGNMENTCOMPLETE1-3
1.1.3ASSIGNMENTFAILURE1-4
1.1.4HANDOVERREQUEST1-5
1.1.5HANDOVERREQUESTACKNOWLEDGE1-7
1.1.6HANDOVERREQUIRED1-8
1.1.7HANDOVERREQUIREDREJECT1-9
1.1.8HANDOVERCOMMAND1-10
1.1.9HANDOVERCOMPLETE1-10
1.1.10HANDOVERFAILURE1-10
1.1.11HANDOVERPERFORMED1-11
1.1.12PAGING1-12
1.1.13CLEARREQUEST1-13
1.1.14CLEARCOMMAND1-13
1.1.15CLASSMARKREQUEST1-14
1.1.16CLASSMARKUPDATE1-14
1.1.17CIPHERMODECOMMAND1-14
1.1.18CIPHERMODECOMPLETE1-15
1.1.19CIPHERMODEREJECT1-15
1.1.20COMPLETELAYER3INFORMATION1-16
1.2Signalingelementcoding1-16
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
MSC-BSS
M
5-10
Layer3HeaderInformation
1.2.3
MSC-BSS
O（3）
4
Priority
1.2.4
MSC-BSS
O
3
CircuitIdentityCode
1.2.5
MSC-BSS
O
（1）
3
DownlinkDTXFlag
1.2.6
MSC-BSS
O
（2）
2
InterferenceBandToBeUsed
1.2.7
MSC-BSS
O
2
ClassmarkInformation2
1.2.8
MSC-BSS
O（4）
4-5
GroupCallReference
1.2.9
MSC-BSS
O（5）
3-8
TalkerFlag
1.2.10
MSC-BSS
O（6）
1
LSAAccessControlSuppression
1.2.11
MSC-BSS
O（8）
2
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
REFERENCE
DIRECTION
TYPE
LEN
MessageType
1.2.1
BSS-MSC
M
1
RRCause
1.2.12
BSS-MSC
O
2
CircuitIdentityCode
1.2.5
BSS-MSC
O（4）
3
CellIdentifier
1.2.13
BSS-MSC
O
（1）
3-10
ChosenChannel
1.2.14
BSS-MSC
O（3）
2
ChosenEncryptionAlgorithm
1.2.15
BSS-MSC
O（5）
2
CircuitPool
1.2.16
BSS-MSC
O
（2）
2
SpeechVersion（Chosen）
1.2.17
BSS-MSC
O（6）
2
LSAIdentifier
1.2.18
BSS-MSC
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
REFERENCE
DIRECTION
TYPE
LEN
MessageType
1.2.1
BSS-MSC
M
1
Cause
1.2.19
BSS-MSC
M
3-4
RRCause
1.2.12
BSS-MSC
O
2
CircuitPool
1.2.16
BSS-MSC
O
（1）
2
CircuitPoolList
1.2.20
BSS-MSC
O
（2）
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.
INFORMATIONELEMENT
REFERENCE
DIRECTION
TYPE
LEN
MessageType
1.2.1
MSC-BSS
M
1
ChannelType
1.2.2
MSC-BSS
M
5-10
EncryptionInformation
1.2.21
MSC-BSS
M
（1）
3-n
ClassmarkInformation1Or
1.2.22
MSC-BSS
M#
2
ClassmarkInformation2
1.2.8
MSC-BSS
M（
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