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4.13 Domain Name System Procedures for Evolved Packet System (deps) uid_400004

Resources: C4

References

Document

Title/Contents

WID(s)

CP-080280

WID on Domain Name System Procedures for Evolved Packet System (DEPS)

Impacted Specifications

TS 23.003

Numbering, addressing and identification

New Dedicated Specifications/Reports

TS 29.303

Domain Name System Procedures; Stage 3

UID

Name

Resource

Hyperlink

TS_TR

400104

Domain Name System Procedures for Evolved Packet System (DEPS)

C4

CP-080280

23.003, new 29.303

Rel-8 EPS work has shown that existing pre-Rel-8 DNS procedures for gateway selection are not adequate in EPS. Furthermore, EPS APN naming and subsequent DNS procedures are further complicated by the multiple protocol support (i.e. GTP and Proxy Mobile IP) in Rel-8 gateway nodes and over the inter-operator roaming connections. Well defined DNS procedures for EPS are needed for more advanced DNS usage than using A or AAAA query types.

This work provides Stage 2 procedures and Stage 3 descriptions for DNS usage that cover the EPC node selection (e.g. SGW and PGW nodes) excluding the UE initiated ePDG and Home Agent discovery and selection procedures. The DNS based node selection may be affected by the selected APN, desired protocol support (e.g. GTP or PMIP), and other operational and deployment related information (e.g. service area). The DNS procedures cover both intra- and inter-operator cases.

4.14 Iwf between map based and Diameter based interfaces (saes-map2Diam) uid_410007

Resources: C4

References

Document

Title/Contents

WID(s)

CP-080644

WID on InterWorking Function (IWF) between MAP based and Diameter based interfaces

Impacted Specifications

New Dedicated Specifications/Reports

TS 29.305

InterWorking Function (IWF) between MAP based and Diameter based interfaces

UID

Name

Resource

Hyperlink

TS_TR

410007

InterWorking Function (IWF) between MAP based and Diameter based interfaces

C4

CP-080644

new 29.305

This work was triggered by the Rel-8 Study UID_380023 (FS_MAP2Diam) which produced TR 29.805 InterWorking Function (IWF) between MAP based and Diameter based interfaces.

TSG SA has set the requirement for interworking between SAE/LTE and the legacy system. Some MAP based interfaces are used in legacy systems and CT4 choose the Diameter protocol for S6a/S6d/S13 in EPS. CT4 specified S6a/S6d/S13 related interworking scenarios to be used between EPC networks or between EPC and GPRS core network. Interworking for the other interfaces may be specified in later 3GPP Releases.

CT4 has produced protocol mapping between Diameter based S6a/S6d/S13 and MAP based Gr/Gr+/Gf for the EPS, including description of scenarios, description of mapping procedures and mapping of related messages/parameters.

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