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Content for TS 43.059 Word version: 18.0.0

1… 5… 9…

5.1 LCS Operations 5.2 High-Level Functions 5.3 GERAN LCS Functional Entities 5.4 Assignment of LCS Functional Entities to GERAN Elements 5.5 Functional Description of GERAN LCS Network Elements 6.1 Protocol layering in A/Gb mode 6.2 Protocol layering in Iu mode 7.1 State description for SMLC 7.2 State Description for the BSC 7.3 Usage of SCCP Connection on the Lb interface in the CS domain in A/Gb mode 7.4 Usage of SCCP Connection on the Lb interface in the PS domain in A/Gb mode 8.1 Information Transfer between an SMLC and a Target MS in the CS Domain in A/Gb mode for E-OTD and A-GNSS positioning methods 8.1a Information Transfer between an SMLC and a Target MS in the PS Domain in A/Gb mode 8.1b Information Transfer between an SMLC and a Target MS in Iu Mode 8.2 Information Transfer between an SMLC and a BSC 8.3 Common Procedures to Support Access to an LMU 8.4 Common Control Procedures for LMUs 8.5 Exception Procedures 8.6 Procedures in the Target MS 8.7 Further Procedures for Handover

5 GERAN LCS Architecture p. 13

5.1 LCS Operations p. 14

5.2 High-Level Functions p. 15

5.2.1 Co-ordination, Measurement and Calculation Functions p. 16

5.3 GERAN LCS Functional Entities p. 17

5.3.1 Internal Client Group p. 17

5.3.1.1 Internal GERAN Location Client Function (LCF) p. 17

5.3.2 GERAN System Handling group p. 17

5.3.2.1 GERAN Location System Control Function (LSCF) p. 17

5.3.2.2 GERAN Location System Operations Function (LSOF) p. 17

5.3.2.3 Location System Broadcast Function (LSBcF) p. 17

5.3.3 Positioning group p. 18

5.3.3.1 GERAN Position Radio Co-ordination Function (PRCF) p. 18

5.3.3.2 GERAN Position Calculation Function (PCF) p. 18

5.3.3.3 GERAN Position Signal Measurement Function (PSMF) p. 19

5.3.3.4 GERAN Position Radio Resource Management (PRRM) p. 19

5.4 Assignment of LCS Functional Entities to GERAN Elements p. 19

5.5 Functional Description of GERAN LCS Network Elements p. 19

5.5.1 BSC p. 19

5.5.2 SMLC p. 19

5.5.3 CBC p. 20

5.5.4 LMU p. 20

5.5.5 MS p. 20

6 Signalling Protocols and Interfaces p. 20

6.1 Protocol layering in A/Gb mode p. 20

6.1.1 Generic Signalling Model p. 20

6.1.2 Message Segmentation in A/Gb mode p. 21

6.1.2.1 Network Level Segmentation p. 21

6.1.2.2 Intermediate Level Segmentation p. 22

6.1.2.3 RRLP Pseudo-Segmentation p. 22

6.1.3 Signalling between an SMLC, MSC and BSC p. 22

6.1.3a Signalling between an SMLC, SGSN and BSS |R5| p. 22

6.1.4 Signaling between SMLC and MS p. 23

6.1.5 SMLC Signalling to a Type A LMU p. 24

6.1.5.1 Circuit Switched Signalling using an SDCCH p. 24

6.1.5.2 Signalling using a TCH p. 24

6.1.6 SMLC signalling to a Type B LMU p. 25

6.1.7 SMLC Signalling to a peer SMLC p. 26

6.2 Protocol layering in Iu mode |R5| p. 26

6.2.1 Signalling between SMLC and MSC/SGSN p. 26

6.2.2 Signalling between SMLC and MS p. 27

6.2.3 SMLC signalling to a Type A LMU p. 28

6.2.4 SMLC signalling to a Type B LMU p. 28

6.2.5 SMLC signalling to a peer SMLC p. 28

7 GERAN Network Location Procedures p. 28

7.1 State description for SMLC p. 28

7.1.1 SMLC States p. 28

7.1.1.1 NULL State p. 28

7.1.1.2 LOCATION State p. 28

7.1.2 State Functionality p. 29

7.1.2.1 State Transitions p. 29

7.1.2.2 LOCATION Timer Function p. 29

7.2 State Description for the BSC p. 29

7.2.1 BSC States p. 29

7.2.1.1 IDLE State p. 29

7.2.1.2 LOCATION State p. 29

7.2.2 State Functionality p. 30

7.2.2.1 State Transitions p. 30

7.2.2.2 LOCATION Timer Function p. 30

7.3 Usage of SCCP Connection on the Lb interface in the CS domain in A/Gb mode p. 30

7.3.1 SCCP Connection for positioning of a target MS p. 30

7.3.2 SCCP connection to access a Type A LMU p. 31

7.4 Usage of SCCP Connection on the Lb interface in the PS domain in A/Gb mode |R5| p. 31

7.4.1 SCCP Connection for positioning of a target MS p. 31

8 Common Procedures to Support Positioning p. 32

8.1 Information Transfer between an SMLC and a Target MS in the CS Domain in A/Gb mode for E-OTD and A-GNSS positioning methods p. 32

8.1a Information Transfer between an SMLC and a Target MS in the PS Domain in A/Gb mode |R5| p. 33

8.1b Information Transfer between an SMLC and a Target MS in Iu Mode |R5| p. 34

8.2 Information Transfer between an SMLC and a BSC p. 35

8.3 Common Procedures to Support Access to an LMU p. 36

8.3.1 Location Update Procedure between an SMLC and a Type A LMU p. 36

8.3.2 IMSI Detach Procedure between an SMLC and a Type A LMU p. 36

8.3.3 LCS Information Transfer between an SMLC and a Type A LMU p. 38

8.3.3.1 Information Transfer using an SDCCH p. 38

8.3.3.2 Information Transfer using a TCH p. 39

8.3.4 LCS Information Transfer between an SMLC and a Type B LMU p. 40

8.4 Common Control Procedures for LMUs p. 41

8.4.1 Reset Procedure p. 41

8.4.2 Status Query Procedure p. 41

8.4.3 Status Update Procedure p. 42

8.5 Exception Procedures p. 42

8.5.1 Procedures in the SMLC p. 42

8.5.2 Procedures in an LMU p. 43

8.5.3 Procedures in the BSC in the CS Domain p. 43

8.5.3.1 General Procedures p. 43

8.5.3.2 Rejection of an SMLC Positioning Request p. 44

8.5.3.3 Interaction with Inter-BSC Handover p. 44

8.5.3.4 Interaction with Intra-BSC Handover and other RR Management Procedures p. 44

8.5.3.5 Priority of Handover and Other RR Management Procedures p. 44

8.5.3.6 Interaction with Segmentation support for Legacy MS p. 44

8.5.3.7 Overload p. 45

8.5.4 Procedures in the BSS in the PS Domain |R5| p. 45

8.5.4.1 General Procedures p. 45

8.5.4.2 Rejection of an SMLC Positioning Request p. 45

8.5.4.3 Overload p. 45

8.5.4.4 Inter BSS Cell Change p. 46

8.5.5 Void

8.6 Procedures in the Target MS p. 46

8.7 Further Procedures for Handover p. 46