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TS 49.031 (RAN6)
Location Services (LCS) –
Base Station System Application Part LCS Extension (BSSAP-LE)

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(P) V14.1.0 2017/06 67 p.

(P) V13.0.0 2016/01 54 p.

(P) V12.0.0 2014/09 54 p.

(P) V11.0.0 2012/09 54 p.

(P) V10.0.0 2011/03 54 p.

(P) V9.0.0 2009/12 54 p.

(P) V8.1.0 2008/12 54 p.

(P) V7.6.0 2008/03 53 p.

(P) V6.5.0 2005/07 45 p.

(P) V5.4.0 2004/05 43 p.

(P) V4.4.0 2004/05 40 p.

(P) GSM Rel-99 v8.7.1 2004/05 48 p.

(P) GSM Rel-98 v7.8.0 2004/05 49 p.

Rapporteur: Mr. Andersen, Niels Peter Skov
Antecedent: TS 09.31
See also: LCS-related TS/TR

This TS specifies procedures and information coding that are needed to define and support the BSSAP LCS Extension (BSSAP-LE). The BSSAP-LE message set is applicable to the following GSM interfaces defined in TS 43.059:

Lb interface (BSC-SMLC).
Lp interface (SMLC-SMLC).

This TS defines message formats and encoding for BSSAP-LE and the particular subsets of it that are applicable to each of the above interfaces. This TS also defines the support for BSSAP-LE message transfer on each of these interfaces using either ITU-T and ANSI versions of SS7 MTP or IETF M3UA/SCTP and SCCP. Additional requirements for the above interfaces that are applicable to BSSAP-LE are also defined - e.g. usage of BSSAP (as defined in TS 24.008 and TS 48.008) on the Lb interface.

full Table of Contents for TS 49.031 PDF version: 14.1.0

part: 1 2 3

1 Scope [R4] PDF-p. 7

2 References [R4]

3 Definitions, abbreviations and symbols [R4] PDF-p. 8

4 Definition of BSSAP-LE [R4]

4.1 DTAP-LE Messages

4.2 BSSMAP-LE Messages PDF-p. 9

5 Procedures applicable to use of BSSAP-LE [R4]

5.1 Location Request

5.1.1 Successful Operation PDF-p. 10

5.1.2 Unsuccessful Operation PDF-p. 11

5.1.3 Abnormal Conditions

5.2 Connection Oriented Information Transfer PDF-p. 12

5.2.1 Successful Operation

5.2.2 Abnormal Conditions

5.2.3 Segmentation

5.3 Connectionless Information Transfer PDF-p. 13

5.3.1 Successful Operation

5.3.2 Unsuccessful Operation

5.3.3 Abnormal Conditions PDF-p. 14

5.3.4 Segmentation

5.4 LMU Connection Establishment

5.4.1 LMU Connection Establishment initiated by the SMLC

5.4.1.1 Successful Operation

5.4.1.2 Unsuccessful Operation PDF-p. 15

5.4.1.3 Abnormal Conditions

5.4.2 LMU Connection Establishment initiated by the MSC

5.4.2.1 Successful Operation

5.4.2.2 Unsuccessful Operation

5.4.2.3 Abnormal Conditions

5.6 DTAP-LE Information Transfer PDF-p. 16

5.6.1 DTAP-LE Information Transfer Initiated by the SMLC

5.6.2 DTAP-LE Information Transfer Initiated by the BSC

5.7.1 Normal Operation

5.7.2 Abnormal Conditions

5.8 Perform Location Information [R5] PDF-p. 17

6 Usage of BSSAP-LE and BSSAP on the Lb Interface [R4]

6.1 Applicable Message Sets

6.2 MTP Functions PDF-p. 18

6.3 SCCP Functions

6.3.2 Modifications for Connectionless SCCP PDF-p. 19

6.3.3 Modifications for Connection Oriented SCCP

6.3.4 Contents of the SCCP Data Field

6.3.5 Abnormal Conditions PDF-p. 20

8 Use of BSSAP-LE on the Lp Interface [R4]

8.1 Applicable Message Sets

8.2 MTP Functions

8.3 SCCP functions PDF-p. 21

8.3.2 Allowed Exceptions to ITU-T Recommendations Q.711-714

8.3.3 Allowed Exceptions to ANSI T1.112

8.3.4 Usage of Connectionless SCCP

8.3.5 Usage of Connection Oriented SCCP PDF-p. 22

8.3.6 Contents of the SCCP Data Field