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Content for  TS 29.276  Word version:  17.0.0

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1  Scopep. 6

The present document specifies the stage 3 of the Evolved Packet System S101and S121 reference points between the MME and the HRPD Access Network. The S101 interface supports procedures for Pre-Registration, Session Maintenance and Active handoffs between E-UTRAN and HRPD networks. The S121 interface supports procedures for RIM 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 forward DL data to minimize packet losses in mobility from E-UTRAN to HRPD. Signalling procedures on the S101 interface are used to set up tunnels on the S103 interface.
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2  Referencesp. 6

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.402: "Architecture enhancements for non-3GPP accesses".
[3]
RFC 3232:  "Assigned Numbers".
[4]
RFC 2784:  "Generic Routing Encapsulation (GRE)".
[5]
RFC 2890:  "Key and Sequence Number Extensions to GRE".
[6]
TS 29.274: "Evolved GPRS Tunnelling Protocol for Control Plane (GTPv2-C); Stage 3".
[7]
3GPP2 C.S0024-B: "cdma2000 High Rate Packet Data Air Interface Specification".
[8]
TS 23.007: "Restoration procedures".
[9]
3GPP2 C.S0087-0 v2.0: "E-UTRAN - HRPD and CDMA2000 1x Connectivity and Interworking: Air Interface Aspects".
[10]
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[11]
TS 33.402: "3GPP System Architecture Evolution: Security Architecture".
[12]
TS 36.413: "Evolved Universal Terrestrial Radio Access (E-UTRA) ; S1 Application Protocol (S1AP)".
[13]
TS 24.008: " Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".
[14]
TS 29.280: "3GPP EPS Sv interface (MME to MSC) for SRVCC".
[15]
TS 48.018: "General Packet Radio Service (GPRS); Base Station System (BSS) - Serving GPRS Support Node (SGSN); BSS GPRS protocol (BSSGP)".
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3  Definitions, symbols and abbreviationsp. 7

3.1  Definitionsp. 7

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
HRPD Access:
Combination of the eAN - PCF of the cdma2000 access

3.2  Abbreviationsp. 7

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
AN
Access Network
eAN
enhanced AN
eNodeB
enhanced Node B
E-UTRAN
Enhanced UMTS Terrestial Radio Access Network
GRE
Generic Routing Encapsulation
GW
Gateway
HO
HandOver
HRPD
High Rate Packet Data
HSGW
HRPD Serving GateWay
IMSI
International Mobile Station Identity
IP
Internet Protocol
MME
Mobility Management Entity
PCF
Packet Control Function
PDN
Packet data Network
PMIP
Proxy Mobile IP
RIM
RAN Information Management
TEID
Tunnel End Point Identifier
UDP
User Datagram Protocol
VS
Vendor Specific
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4  Generalp. 7

The S101 and S121 reference points are defined between the MME and the HRPD access, enabling interactions between E-UTRAN Access and cdma2000 HRPD Access. The S101 interface is required to perform procedures related to optimise HO from the E-UTRAN Access to cdma2000 HRPD Access to allow for pre-registration and handover signalling with the target system. The S121 interface is required to perform procedures related to RIM information exchange between the E-UTRAN Access and cdma2000 HRPD Access.
The S103 interface is defined between the Serving GW and HSGW and supports the forwarding of DL data during mobility from E-UTRAN to HRPD. Signalling procedures on the S101 interface are used to set up tunnels on the S103 interface.
The requirements for these interfaces are defined in TS 23.402.
The protocol stack used for the S101 and S121 interfaces shall be based on GTPv2-C, see TS 29.274 Figure 4.2.0-1.
The UDP header and port numbers definitions shall be as defined in GTPv2-C, see TS 29.274, clause 4.2.1.
The IP header and IP addresses definitions shall be as defined in GTPv2-C, see TS 29.274, clause 4.2.2.
Layer 1 and Layer 2 requirements shall as defined in GTPv2-C, see TS 29.274, clause 4.2.3 and TS 29.274, clause 4.2.4.
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5  Transmission Order and Bit Definitionsp. 8

Transmission Order and Bit Definitions shall be as defined in GTPv2-C, see TS 29.274, clause 4.3.

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