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TS 25.452
UTRAN – Iupc Interface –
Signalling Transport

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Mr. Flore, Dino

Content for  TS 25.452  Word version:  16.0.0

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1  ScopeWord‑p. 5

The present document specifies the signalling transport related to PCAP signalling to be used across the Iupc interface. The Iupc interface is a logical interface for the interconnection of Stand-Alone SMLC (SAS) and Radio Network Controller (RNC) components of the Universal Terrestrial Radio Access Network (UTRAN) for the UMTS system. The radio network control signalling between these nodes is based upon the Position Calculation Application Part (PCAP).

2  References

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.
TS 25.422: "UTRAN Iur Interface Signalling Transport".
ITU-T Recommendation Q.711 (1996-07): "Functional description of the signalling connection control part".
ITU-T Recommendation Q.712 (1996-07): "Definition and function of Signalling connection control part messages".
ITU-T Recommendation Q.713 (1996-07): "Signalling connection control part formats and codes".
ITU-T Recommendation Q.714 (1996-07): "Signalling connection control part procedures".
ITU-T Recommendation Q.715 (1996-07): "Signalling connection control part user guide".
ITU-T Recommendation Q.716 (1993-03): "Signalling Connection Control Part (SCCP) performance".
TS 25.305: "Stage 2 functional specification of UE positioning in UTRAN"

3  Definitions and abbreviations

3.1  Definitions

For the purposes of the present document, the following definition applies:
Stand-Alone SMLC (SAS):
As defined in TS 25.305.

3.2  Abbreviations

For the purposes of the present document, the following abbreviations apply:
Position Calculation Application Part
Service Access Point
Stand-Alone SMLC
Signalling Connection Control Part
Serving Mobile Location Centre
User Equipment
Universal Mobile Telecommunication System
UMTS Terrestrial Radio Access Network

4  PCAP Signalling BearerWord‑p. 6

4.1  Introduction

This clause specifies the Signalling Bearer protocol stack that supports the PCAP signalling protocol.
The following requirements on the Signalling Bearer can be stated:
  • provide reliable transfer of control plane signalling messages in both connectionless mode and connection-oriented mode;
  • provide separate independent connections for distinguishing individual transactions;
  • provide networking and routing functions;
  • provide redundancy in the signalling network;
  • provide load sharing.

4.2  Signalling Bearer

The Iupc signalling bearer shall comply with the requirements of clause 5.2 in TS 25.422.

4.3  Services Provided by the Signalling Bearer

When considering the requirements that the upper layers, i.e. PCAP, have on the Signalling Bearer, there are a number of services it has to provide and a number of functions to perform. These numbers of services that the signalling bearer shall provide, to the upper layers, are stated in references ITU-T Rec. Q.711 [2], ITU-T Rec. Q.712 [3], ITU-T Rec. Q.713 [4], ITU-T Rec. Q.714 [5], ITU-T Rec. Q.715 [6], and ITU-T Rec. Q.716 [7].

$  Change HistoryWord‑p. 7

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