LTE RRC Timer & RRC Connection Setup Complete message evolution

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MobileComm Professionals, Inc

5.LTE RRC Timer & RRC Connection Setup Complete message evolution

MobileComm Professionals, Inc Author : Ray KhasturTitle : LTE Optimization Consultant



T300 (RRC Connection Timer)

Timer Start Stop At expiry

T300 Transmission of RRCConnectionRequest

Reception of RRCConnectionSetup or RRCConnectionReject message, cell re-selection and upon abortion of connection establishment by upper layers Perform the actions as specified in 5.3.3.6



T301 (RRC Reestablishment Success)


T301Transmission of RRCConnectionReestabilshmentRequest

Reception of RRCConnectionReestablishment or RRCConnectionReestablishmentReject message as well as when the selected cell becomes unsuitable Go to RRC_IDLE



T301 (RRC Reestablishment Fail)


T301Transmission of RRCConnectionReestabilshmentRequest

Reception of RRCConnectionReestablishment or RRCConnectionReestablishmentReject message as well as when the selected cell becomes unsuitable Go to RRC_IDLE



T304 (Handover Timer)


T304

Reception of RRCConnectionReconfiguration message including the MobilityControl Info or reception of MobilityFromEUTRACommand message including CellChangeOrder

Criterion for successful completion of handover to EUTRA or cell change order is met (the criterion is specified in the target RAT in case of inter-RAT)

In case of cell change order from E-UTRA or intra E-UTRA handover, initiate the RRCconnection re-establishment procedure; In case of handover to E-UTRA, perform the actions defined in the specifications applicable for the source RAT.



T310 & T311 (Service Drop Timer)


T310

Upon detecting physical layer problems i.e. upon receiving N310 consecutive out-of-sync indications from lower layers

Upon receiving N311 consecutive in-sync indications from lower layers, upon triggering the handover procedure and upon initiating the connection re-establishment procedure

If security is not activated: go to RRC_IDLEelse: initiate the connection re-establishment procedure

T311Upon initiating the RRCconnection reestablishmentmprocedure

Selection of a suitable E-UTRA cell or a cell using another RAT. Enter RRC_IDLE



N310 & N311 (Service Drop Constant)

Constant Usage

N310Maximum number of consecutive "out-of-sync" indications received from lower layers. Value in whole number

N311Maximum number of consecutive "in-sync" indications received from lower layers. Value in whole number



RLF (Radio Link Failure)

Attempt to recover Radio Link while Out of SYNC (Radio Link Failure)

UE may assume that Radio Link is broken in the following setuation.The measured RSRP is too low (under a certain limit)It failed to decode PDCCH due to power signal quality (e.g, low RSRP, RSRQ)It failed to decode PDSCH due to power signal quality (e.g, low RSRP, RSRQ)

When UL Data arrives from higher layer while Out of SYNC (Radio Link Failure)

eNodeB may assume that that Radio Link is broken in the following setuation.SRS Power (SINR) from UE is much lower than what eNBconfigured for the UEeNodeB couldn't detect (see) any NACK nor ACK from UE for PDSCH.



Timer Definition on Handover X2

TX2 Reloc Overall:T304+T311+T301

TX2 Reloc Overall:500ms+10000ms+200ms

TX2 Reloc Overall: 10.7ms

Related with X2



LTE RRC Connection Setup Complete Evolution



11

RRC Message Rel.8 (ZTE MF-90)

RRCConnectionSetupComplete ::= SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..6),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),Mmec}



12

RRC Message Rel.9

RRCConnectionSetupComplete ::= SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..6),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension RRCConnectionSetupComplete-v8a0-IEsOPTIONAL}RRCConnectionSetupComplete-v8a0-IEs ::= SEQUENCE {lateNonCriticalExtension OCTET STRING OPTIONAL,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),mmec MMEC}



13

RRC Message Rel.10 (Samsung Galaxy Note 4)

RRCConnectionSetupComplete ::= SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..6),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension RRCConnectionSetupComplete-v8a0-IEs OPTIONAL}RRCConnectionSetupComplete-v8a0-IEs ::= SEQUENCE {lateNonCriticalExtension OCTET STRING OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1020-IEs OPTIONAL}RRCConnectionSetupComplete-v1020-IEs ::= SEQUENCE {gummei-Type-r10 ENUMERATED {native, mapped} OPTIONAL,rlf-InfoAvailable-r10 ENUMERATED {true} OPTIONAL,logMeasAvailable-r10 ENUMERATED {true} OPTIONAL,rn-SubframeConfigReq-r10 ENUMERATED {required, notRequired} OPTIONAL,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),mmec MMEC}



RRCConnectionSetupComplete-v1020-IEs ::= SEQUENCE {gummei-Type-r10 ENUMERATED {native, mapped} OPTIONAL,rlf-InfoAvailable-r10 ENUMERATED {true} OPTIONAL,logMeasAvailable-r10 ENUMERATED {true} OPTIONAL,rn-SubframeConfigReq-r10 ENUMERATED {required, notRequired} OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1130-IEs OPTIONAL}RRCConnectionSetupComplete-v1130-IEs ::= SEQUENCE {connEstFailInfoAvailable-r11 ENUMERATED {true} OPTIONAL,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),mmec MMEC}

14

RRC Message Rel.11

RRCConnectionSetupComplete ::= SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..maxPLMN-r11),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension RRCConnectionSetupComplete-v8a0-IEs OPTIONAL}RRCConnectionSetupComplete-v8a0-IEs ::= SEQUENCE {lateNonCriticalExtension OCTET STRING OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1020-IEs OPTIONAL}



RRCConnectionSetupComplete-v1020-IEs ::= SEQUENCE {gummei-Type-r10 ENUMERATED {native, mapped} OPTIONAL,rlf-InfoAvailable-r10 ENUMERATED {true} OPTIONAL,logMeasAvailable-r10 ENUMERATED {true} OPTIONAL,rn-SubframeConfigReq-r10 ENUMERATED {required, notRequired} OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1130-IEs OPTIONAL}RRCConnectionSetupComplete-v1130-IEs ::= SEQUENCE {connEstFailInfoAvailable-r11 ENUMERATED {true} OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1250-IEs OPTIONAL}RRCConnectionSetupComplete-v1250-IEs ::= SEQUENCE {mobilityState-r12 ENUMERATED {normal, medium, high, spare} OPTIONAL,mobilityHistoryAvail-r12 ENUMERATED {true} OPTIONAL,logMeasAvailableMBSFN-r12 ENUMERATED {true} OPTIONAL,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),mmec MMEC}

15

RRC Message Rel.12

RRCConnectionSetupComplete ::= SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..maxPLMN-r11),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension RRCConnectionSetupComplete-v8a0-IEs OPTIONAL}RRCConnectionSetupComplete-v8a0-IEs ::= SEQUENCE {lateNonCriticalExtension OCTET STRING OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1020-IEs OPTIONAL}



16

RRC Message Rel.13

RRCConnectionSetupComplete ::=SEQUENCE {rrc-TransactionIdentifier RRC-TransactionIdentifier,criticalExtensions CHOICE {c1 CHOICE{rrcConnectionSetupComplete-r8 RRCConnectionSetupComplete-r8-IEs,spare3 NULL, spare2 NULL, spare1 NULL},criticalExtensionsFuture SEQUENCE {}}}RRCConnectionSetupComplete-r8-IEs ::= SEQUENCE {selectedPLMN-Identity INTEGER (1..maxPLMN-r11),registeredMME RegisteredMME OPTIONAL,dedicatedInfoNAS DedicatedInfoNAS,nonCriticalExtension RRCConnectionSetupComplete-v8a0-IEs OPTIONAL}RRCConnectionSetupComplete-v8a0-IEs ::= SEQUENCE {lateNonCriticalExtension OCTET STRING OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1020-IEs OPTIONAL}

RRCConnectionSetupComplete-v1020-IEs ::= SEQUENCE {gummei-Type-r10 ENUMERATED {native, mapped} OPTIONAL,rlf-InfoAvailable-r10 ENUMERATED {true} OPTIONAL,logMeasAvailable-r10 ENUMERATED {true} OPTIONAL,rn-SubframeConfigReq-r10 ENUMERATED {required, notRequired}

OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1130-IEs OPTIONAL}RRCConnectionSetupComplete-v1130-IEs ::= SEQUENCE {connEstFailInfoAvailable-r11 ENUMERATED {true} OPTIONAL,nonCriticalExtension RRCConnectionSetupComplete-v1250-IEs OPTIONAL}RRCConnectionSetupComplete-v1250-IEs ::= SEQUENCE {mobilityState-r12 ENUMERATED {normal, medium, high, spare} OPTIONAL,mobilityHistoryAvail-r12 ENUMERATED {true} OPTIONAL,logMeasAvailableMBSFN-r12 ENUMERATED {true} OPTIONAL,nonCriticalExtension SEQUENCE {} OPTIONAL}RegisteredMME ::= SEQUENCE {plmn-Identity PLMN-Identity OPTIONAL,mmegi BIT STRING (SIZE (16)),mmec MMEC}

There is no additional information on LTE Rel.133GPP TS 36.331 V13.0.0 (2015-12)



Thank You



Ray Khastur, ST.

Educational Background : Bachelor of Telecommunication Engineer, Telkom Institute of Technology (2006 –2010) JPPA-N Acceleration

Professional Experience : PI.Works, RAN Consultant (2014 ~ Present) China JIESAI, LTE Optimization Consultant (2014) Lintas Media Telekomunikasi, LTE RF Team Leader (2013 ~ 2014) HUAWEI Tech Investment, CWiL RNP/O Engineer (2011 ~ 2013) Transdata Global Network, CDMA RNO Engineer (2010 ~2011)

Achievements : RF Network Design & Planning First Commercial LTE Network in Indonesia (BOLT! Super 4G LTE)-2013 HUAWEI NPI & Post Launch Optimization BOLT! Super 4G LTE - 2014 PI.Works LTE Technical Expert for HUAWEI Environment LTE Planning & Optimization Trainer Floatway Certified-2013 LTE HUAWEI Trainer for Subcont-2016

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LTE RRC Timer & RRC Connection Setup Complete message evolution

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