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Content for  TS 29.336  Word version:  18.2.0

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1  Scopep. 8

The present document describes the Diameter-based interfaces between the HSS and other network elements involved in the architecture for interworking with packet data networks and applications, such as Machine-Type Communications (MTC).
In particular, this document specifies the S6m interface between the Home Subscriber Server (HSS) and the MTC Interworking Function (MTC-IWF), the S6n interface between the HSS and the MTC-AAA and the S6t interface between the HSS and the Service Capability Exposure Function (SCEF). The procedures over those interfaces are defined in TS 23.682.
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2  Referencesp. 8

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 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
[3]  Void.
[4]
TS 33.210: "3G security; Network Domain Security (NDS); IP network layer security".
[5]
RFC 4960:  "Stream Control Transport Protocol".
[6]
TS 29.228: "IP multimedia (IM) Subsystem Cx Interface; Signalling flows and Message Elements".
[7]
TS 29.229: "Cx and Dx interfaces based on the Diameter protocol; protocol details ".
[8]
TS 29.173: "Diameter-based SLh interface for Control Plane LCS".
[9]
RFC 5234:  "Augmented BNF for Syntax Specifications: ABNF".
[10]
TS 29.329: "Sh Interface based on the Diameter protocol".
[11]
TS 23.003: "Numbering, addressing and identification".
[12]
TS 29.338: "Diameter based protocols to support SMS capable MMEs".
[13]
TS 29.368: "Tsp interface protocol between the MTC Interworking Function (MTC-IWF) and Service Capability Server (SCS)".
[14]
TS 29.272: "Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol".
[15]
RFC 7683  : "Diameter Overload Indication Conveyance".
[16]
TS 32.299: "Telecommunication management; Charging management; Diameter charging applications".
[17]
TS 29.217: "Congestion Reporting Over Np Reference Point".
[18]
RFC 5777:  "Traffic Classification and Quality of Service (QoS) Attributes for Diameter".
[19]
TS 23.007: "Restoration procedures".
[20]
RFC 7944:  "Diameter Routing Message Priority".
[21]
RFC 5778:  "Diameter Mobile IPv6: Support for Home Agent to Diameter Server Interaction".
[22]
RFC 8583:  "Diameter Load Information Conveyance".
[23]
RFC 6733:  "Diameter Base Protocol".
[24]
TS 29.128: "Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) interfaces for interworking with packet data networks and applications".
[25]
TS 29.154: "Service capability exposure functionality over Nt Reference point".
[26]
TS 29.122: "T8 reference point for Northbound APIs".
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3  Definitions, symbols and abbreviationsp. 9

3.1  Abbreviationsp. 9

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.
AAA
Authentication, Authorization and Accounting
ABNF
Augmented Backus-Naur Form
AVP
Attribute-Value Pair
DRMP
Diameter Routing Message Priority
DSCP
Differentiated Services Code Point
IANA
Internet Assigned Numbers Authority
MTC
Machine-Type Communications
MTC-IWF
MTC Interworking Function
NIDD
Non-IP Data Delivery
SCS
Services Capability Server
SCEF
Service Capability Exposure Function
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4  General Descriptionp. 9

4.1  Introductionp. 9

The S6m reference point between the MTC-IWF and the HSS, the S6n reference point between the MTC-AAA and the HSS, and the S6t reference point between the SCEF and the HSS, are defined in the TS 23.682.
This document describes the Diameter-based S6m, S6n and S6t related procedures, message parameters and protocol specification.
An excerpt of the architecture for Machine-Type Communication, as defined in TS 23.682 is shown in Figure 4.1-1, where the relevant interfaces towards the HSS are highlighted.
Copy of original 3GPP image for 3GPP TS 29.336, Fig. 4.1-1: 3GPP Architecture for Machine-Type Communication
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In this architecture, the S6m reference point connects the MTC-IWF with the HSS, where the subscription information of the UE (e.g., an MTC device) is stored. This reference points allows the MTC-IWF to retrieve subscription data and to do any necessary mapping between different identities associated to the UE.
The S6m interface shall allow the MTC-IWF to:
  • retrieve subscription information of the UE from the HSS,
  • request routing information from the HSS, i.e. the address of the UE's serving nodes supporting SMS for the UE ; in this context serving nodes of the UE are the MSC or MME but not both, the SGSN, and the IP-SM-GW,
  • retrieve the IMSI of the UE,
  • retrieve the External Identifier of the UE associated to an Application Port Identifier,
  • perform authorization of the Service Capability Server that is requesting to send a device trigger to the UE.
Additionally, the S6n reference point connects the MTC-AAA with the HSS, and it allows the MTC-AAA to do the mapping of the UE IMSI to the external identifier(s) of the UE.
The S6t reference point connects the SCEF with the HSS to perform configuration and reporting of Monitoring events, and configuration of AESE Communication Pattern.
The S6t interface shall allow the SCEF to:
  • configure UE related Monitoring events
  • receive reporting of the configured Monitoring events from the HSS
  • configure UE related AESE Communication Pattern
  • Authorize the UE for NIDD.
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