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ETSI TS 129 276
M00003680
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ETSI TS 129 276 Universal Mobile Telecommunications System (UMTS); LTE; 3GPP Evolved Packet System (EPS); Optimized handover procedures and protocols between E-UTRAN access and cdma2000 HRPD Access; Stage 3 (3GPP TS 29.276 version 12.3.0 Release 12)
standard by European Telecommunications Standards Institute, 01/01/2015
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ETSI TS 129 276 specifies the stage 3 of the Evolved Packet System S101and S121 reference points between theMME and the HRPD Access Network. The S101 interface supports procedures for Pre-Registration, SessionMaintenance and Active handoffs between E-UTRAN and HRPD networks. The S121 interface supports procedures forRIM information exchange between the MME and the HRPD Access Network.It also specifies the S103 interface between the Serving GW and HSGW. This User Plane interface is used to forwardDL data to minimize packet losses in mobility from E-UTRAN to HRPD. Signalling procedures on the S101 interfaceare used to set up tunnels on the S103 interface.