TR 29.903
Feasibility Study on
SS7 signalling transport in the core network with
SCCP-User Adaptation (SUA) layer
V6.0.0 (PDF)
2005/01 41 p.
V5.0.0
2002/01 41 p.
- Rapporteur:
- Mr. Young, Michael
full Table of Contents for TR 29.903 Word version: 6.0.0
1 Scope p. 6
The scope of this Technical Report (TR) is to capture the results of a feasibility study on SS7 signalling transport (e.g. MAP & CAP) in a 3GPP core network with SCCP-User Adaptation (SUA) for Release-5.
With this purpose in mind, this TR evaluates the advantages and disadvantages associated with the implementation of SUA in the core network, and compares it with the SCCP/M3UA option. Therefore, an overview of M3UA is provided in this document for reference. This TR covers all scenarios such as SUA peer to peer as well as interworking with legacy SS7 network, plus the interworking between SUA and SCCP/M3UA. This TR also identifies and studies the technical issues related to SUA implementation and proposes the possible technical solutions that will enable the effient implementation of SUA, with minimum impacts on the available services.
More generally, the aim of this TR is to identify and strive to solve all issues introduced by such evolution of the core network signalling. At the end of the feasibility study, the open issues are reported and their importance is assessed. Also discussed are the benefits and drawbacks with respect to the introduction of SUA into 3GPP core network signalling.
2 References p. 6
3 Definitions and Abbreviations p. 8
3.1 Definitions p. 8
3.2 Abbreviations p. 8
4 Introduction p. 9
5 SUA Overview p. 9
5.1 Sigtran Background p. 9
5.2 SUA Functionality p. 10
5.3 Mapping Between SCCP Messages and SUA Messages p. 11
5.4 Status in IETF p. 11
6 M3UA Overview p. 12
7 SUA Implementation p. 13
7.1 SUA In an All IP Environment p. 13
7.1.1 Architecture p. 14
7.1.2 Routing SUA Messages in an Intra-PLMN Environment p. 15
7.1.3 Routing SUA Messages in an Inter-PLMN Environment. p. 16
7.1.4 Message Segmentation p. 16
7.2 Interworking with Legacy SS7 Network p. 16
7.2.1 Architecture p. 16
7.2.2 Global Title Management p. 17
7.2.3 Message Segmentation p. 17
7.2.4 SUA Interworking with SCCP Network Management Function p. 17
7.2.5 AMF implementation example in interworking with legacy SS7 network p. 18
7.3 Interworking with SCCP/M3UA p. 20
7.3.1 Architecture p. 20
7.3.2 Global Title management p. 20
7.3.3 Message Segmentation p. 20
7.3.4 SUA Interworking with SCCP Network Management Function p. 20
7.3.5 Interworking in native SS7 networks p. 21
7.3.6 Interworking in SS7 and SigTran Networks p. 21
7.3.7 Interworking in 3GPP networks p. 25
7.3.8 SCCP and SUA interworking in detail p. 26
7.3.8.1 Establishment of SUA connectivity p. 27
7.3.8.2 SEP Failover p. 27
7.3.8.3 Successful ASP Failover Scenario p. 28
7.3.9 Interworking Conclusions p. 28
8 Services Impact p. 28
8.1 Calling line identification presentation (CLIP) p. 28
8.2 Calling line identification restriction (CLIR) p. 28
8.3 Connected line identification presentation (COLP) p. 28
8.4 Connected line identification restriction (COLR) p. 28
8.5 Call Forwarding Unconditional (CFU) p. 29
8.6 Call Forwarding on mobile subscriber Busy (CFB) p. 29
8.7 Call Forwarding on No Reply (CFNRy) p. 29
8.8 Call Forwarding on mobile subscriber Not Reachable (CFNRc) p. 29
8.9 Call Waiting (CW) p. 29
8.10 Call hold (HOLD) p. 29
8.11 Multiparty services (MPTY) p. 29
8.12 Closed User Group p. 29
8.13 Advice of Charge services p. 29
8.14 Barring of All Outgoing Calls (BAOC) p. 29
8.15 Barring of Outgoing International Calls (BOIC) p. 29
8.16 Barring of Outgoing International Calls except those directed to the Home PLMN Country (BOIC-exHC) p. 29
8.17 Barring of All Incoming Calls (BAIC) p. 30
8.18 Barring of Incoming Calls when roaming outside the home PLMN country (BIC-Roam) p. 30
8.19 Explicit Call Transfer (ECT) p. 30
8.20 Completion of Calls to Busy Subscriber (CCBS) p. 30
8.21 Support of Private Numbering Plan (SPNP) p. 30
8.22 Multiple Subscriber Profile (MSP) p. 30
8.23 enhanced Multi-Level Priority and Pre-emption (eMLPP) p. 30
8.24 SMS p. 30
8.25 CAMEL p. 30
8.26 Mobile Number Portability p. 31
9 Security p. 31
10 Network Evolution and Interworking Scenarios p. 32
11 Benefits and Drawbacks p. 33
12 Open Issues p. 34
13 Conclusion p. 35
14 Work Plan p. 35
A Procedure for Message Routing with DNS/ENUM p. 36
A.1 Routing Using Provided E.164 (MSISDN) Number p. 36
A.2 Routing Using Provided E.212 (IMSI) Number p. 36
$ Change history p. 39
