Content for TS 25.305 Word version: 18.0.0
5 UTRAN UE Positioning Architecture
6 Signalling protocols and interfaces
7 General UTRAN UE Positioning procedures
8 Cell ID and Enhanced Cell ID based positioning methods
9 OTDOA positioning method
10 Network-assisted GPS positioning method
11 Information storage
5 UTRAN UE Positioning Architecture p. 15
5.1 UE Positioning Operations p. 15
5.2 Functional Description of UTRAN UE Positioning related elements p. 17
5.2.1 Radio Network Controller (RNC) p. 17
5.2.1.1 Serving RNC p. 17
5.2.1.2 Other RNC p. 18
5.2.1.2.1 Controlling RNC p. 18
5.2.1.2.2 Drift RNC p. 19
5.2.2 Node B p. 19
5.2.3 Location measurement unit (LMU) p. 19
5.2.4 User Equipment (UE) p. 20
5.2.5 Stand-alone SMLC |R5| p. 21
6 Signalling protocols and interfaces p. 21
6.1 LCS signalling between SRNC and MSC/SGSN p. 21
6.2 SRNC signalling to a target UE p. 21
6.3 Controlling RNC signalling to a standalone LMU p. 21
6.4 Controlling RNC signalling to an associated LMU p. 21
6.5 RNC-to-RNC signalling for UE Positioning support p. 21
6.5a SAS to RNC signalling for PCAP |R5| p. 22
6.6 Interfaces p. 22
6.6.1 Iu Interface p. 22
6.6.2 Iur Interface p. 22
6.6.3 Iub Interface p. 23
6.6.4 Uu Interface p. 23
6.6.4.1 Signalling between SRNC and Target UE p. 23
6.6.4.1.1 Assistance Data Delivery to UE p. 25
6.6.4.1.2 Error Handling p. 25
6.6.4.1.3 Broadcast of Assistance Data p. 25
6.6.4.1.4 Signalling Flow for Assistance Data Broadcast Using the Common UTRAN Broadcast Service p. 25
6.6.4.1.5 UE Positioning Assistance Data Ciphering p. 26
6.6.4.1.6 UE Positioning Assistance Data Ciphering Algorithm p. 26
6.6.4.2 Signalling between RNC and stand-alone LMU p. 27
6.6.5 Iupc Interface |R5| p. 28
7 General UTRAN UE Positioning procedures p. 31
7.1 General procedures in UTRAN for UE Positioning p. 31
7.2 Common procedures supporting UE Positioning interaction between RNCs p. 32
7.3 Exception procedures p. 32
7.3.1 Procedures in the SRNC p. 32
7.3.2 Procedures in a LMU p. 34
7.3.3 Procedures in the target UE p. 34
7.3.4 Procedures in the SAS |R5| p. 34
7.4 Radio interface timing procedures p. 35
8 Cell ID and Enhanced Cell ID based positioning methods p. 36
8.1 Cell ID determination p. 39
8.2 Mapping the Cell ID to Geographic Co-ordinates or a Service Area p. 40
8.3 Enhanced Cell ID Methods |R10| p. 40
9 OTDOA positioning method p. 41
9.1 Use of Idle Periods p. 43
9.2 Relative Time Difference (RTD) p. 43
9.3 Time of Day (ToD) p. 44
9.4 Node B Synchronisation p. 44
9.5 OTDOA-IPDL and OTDOA Modes p. 44
9.6 OTDOA network positioning procedures p. 46
10 Network-assisted GPS positioning method p. 51
10.1 Timing calibration p. 52
10.2 Timing assistance p. 52
10.3 GPS assistance data p. 52
10.4 UE search p. 53
10.5 Position determination p. 53
10.5.1 Information to be transferred between UTRAN elements p. 53
10.5.1.1 Almanac data p. 54
10.5.1.2 DGPS corrections p. 55
10.5.1.3 Ionospheric corrections p. 55
10.5.1.4 Ephemeris data and clock correction p. 55
10.5.1.5 Real Time integrity monitor function p. 55
10.5.1.6 GPS reference time p. 56
10.5.1.7 UTC p. 56
10.5.1.8 Reference Location p. 56
10.5.1.9 Additional non-GPS related information p. 56
10.6 RNC based Network Assisted GPS positioning Procedure p. 57
10.7 SAS initiated Network Assisted GPS positioning Procedure |R7| p. 58
11 Information storage p. 60
