11.07.2015 Views

UMTS: Alive and Well - 4G Americas

UMTS: Alive and Well - 4G Americas

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• MSC for GERAN/UTRANooMaintaining SGs association towards MME for EPS/IMSI attached UESupporting SMS procedures via SGs to EPS• MSC for 1xRTToooMaintaining association towards 1xIWS for 1xRTT attached UESupport 1xSRVCC procedure for enhanced 1xCSFB procedureSupporting 3GPP2 SMS procedures via 1xIWS to EPS• E-UTRAN for GERAN/UTRANooForwarding paging request <strong>and</strong> SMS to the UEDirecting the UE to the target CS capable cell via appropriate procedure (i.e. PSh<strong>and</strong>over, RRC release with redirection, CCO w/NACC)• E-UTRAN for 1xRTToooProvision of broadcast information to trigger UE for 1xRTT CS registrationEstablish CDMA2000 tunnel between the UE <strong>and</strong> MME <strong>and</strong> forward 1xRTTmessages.Directing the UE to the target CS capable cell via appropriate procedure (i.e.RRC release with redirection or enhanced 1xCSFB procedure with 1xSRVCCbased)• UE supporting GERAN/UTRAN CSFBooCSFB procedures for EPS/IMSI attach, update <strong>and</strong> detachCS fallback request/reject <strong>and</strong> SMS procedures for using CS domain services• UE supporting 1xRTT CSFBooooo1xRTT CS registration over the EPS after the UE has completed the E-UTRANattachment1xRTT CS re-registration due to mobilityCS fallback request/reject <strong>and</strong> SMS procedures for using CS domain servicesIncludes enhanced CS fallback to 1xRTT capability indication as part of the UEradio capabilities if it supports enhanced 1xCSFBIncludes concurrent 1xRTT <strong>and</strong> HRPD capability indication as part of the UEradio capabilities if supported by the enhanced CS fallback to 1xRTT capable UEwww.3G<strong>Americas</strong>.org February 2010 Page 62

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