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TS 38.305
Stage 2 functional specification of
UE Positioning in NG-RAN

3GPP‑Page   ETSI‑search   eToC↓   LoFT↓   CONTENT →
V18.5.0 (PDF)  2025/03  188 p.
V17.8.0  2025/03  139 p.
V16.10.0  2023/12  124 p.
V15.10.0  2023/06  74 p.
Rapporteur:
Dr. Fischer, Sven
Qualcomm Germany

essential Table of Contents for  TS 38.305  Word version:  18.5.0

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List of Figures and Tables

Table 4.3.1-1Supported versions of UE positioning methods
Table 4.3.1-2Supported versions of SL positioning and ranging methods
Figure 5.1-1UE Positioning Overall Architecture applicable to NG-RAN
Figure 5.2-1Location Service Support by NG-RAN
Figure 6.4.1-1Protocol Layering for LMF to UE LPP CP Signalling
Figure 6.4.1-2Protocol Layering for LMF to UE SLPP Signalling
Figure 6.4.2-1LPP PDU transfer between LMF and UE (network- and UE-triggered cases)
Figure 6.4.3-1SLPP PDU transfer between LMF and UE (network- and UE-triggered cases)
Figure 6.4.4-1LPP Message transfer between LMF and UE using LCS-UPP
Figure 6.5.1-1Protocol Layering for LMF to NG-RAN Signalling
Figure 6.5.2-1NRPPa PDU Transfer between an LMF and NG-RAN node for UE Positioning
Figure 6.5.3-1NRPPa PDU Transfer between an LMF and NG-RAN for obtaining NG-RAN Data
Figure 6.5.4-1NRPPa PDU Transfer between an LMF and NG-RAN Node for providing assistance information for broadcasting
Figure 6.5.4-2NRPPa PDU Transfer between an NG-RAN node and LMF for providing feedback on assistance data broadcasting
Figure 6.7.1-1Protocol Layering for UE-to-UE Signalling
Figure 6.7.2-1SLPP PDU transfer between UEs
Figure 7.1.3-1UE positioning measurements in RRC_IDLE state
Figure 7.2.1-1A single NRPPa transaction
Figure 7.2.2.1-1Location information transfer
Figure 7.3.2-1UE Positioning Operations to support an MT-LR or NI-LR
Figure 7.3.3-1UE Positioning Operations to support an MO-LR
Figure 7.3.4-1UE Positioning Operations to support a Deferred MT-LR
Figure 7.3A.2-1UE Positioning Operations to support an SL-MT-LR
Figure 7.3A.3-1UE Positioning Operations to support an SL-MT-LR for periodic, triggered Location Events
Figure 7.3A.4-1UE Positioning Operations to support an SL-MO-LR
Figure 7.4.1.1-1Location measurement indication procedure
Figure 7.4.1.2-1RRC procedure for UE TxTEG
Figure 7.4.2.1-1Inter-frequency RSTD measurement indication procedure
Figure 7.5.2-1Procedures to support broadcast of assistance data
Figure 7.6.2-1On-Demand PRS transmission procedure
Figure 7.7.2-1Pre-configured measurement gap configuration and activation procedure
Figure 7.7.2-2Pre-configured measurement gap deactivation procedure
Figure 7.8.2-1Pre-configured PRS processing window configuration and activation procedure
Figure 7.8.2-2Pre-configured PRS processing window deactivation procedure
Figure 7.11.2.1-1SLPP Capability Transfer Procedure
Figure 7.11.2.1-2SLPP Capability Indication Procedure
Figure 7.11.2.2-1SLPP Assistance Data Transfer procedure
Figure 7.11.2.2-2SLPP Assistance Data Delivery procedure
Figure 7.11.2.3-1SLPP Location Information Transfer procedure
Figure 7.11.2.3-2SLPP Location Information Delivery procedure
Figure 7.11.2.4-1SLPP Error handling
Figure 7.11.2.5-1SLPP Abort
Figure 7.12-1Procedure for sidelink positioning and ranging (UE-only operation)
Figure 7.14.2-1Area-specific SRS (Pre-)configuration Allocation Procedure
Figure 7.14.3-1Area-specific SRS Configuration Update Procedure
Figure 7.14.4-1Area-specific SRS Configuration Activation Procedure
Table 8.1.2.1.0-1Information that may be transferred from the LMF to UE
Table 8.1.2.1a-1Single base RTK service: Specific information that may be transferred from the LMF to the UE
Table 8.1.2.1a-2Non-Physical Reference Station Network RTK service: Specific information that may be transferred from the LMF to the UE
Table 8.1.2.1a-3MAC Network RTK service: Specific Information that may be transferred from the LMF to the UE
Table 8.1.2.1a-4FKP Network RTK service: Information that may be transferred from the LMF to the UE
Table 8.1.2.1a-5SSR PPP service: Information that may be transferred from the LMF to the UE
Table 8.1.2.1a-6SSR PPP-RTK service: Information that may be transferred from the LMF to the UE
Table 8.1.2.1b-1Mapping of Integrity Parameters
Table 8.1.2.2.0-1Information that may be transferred from UE to the LMF
Figure 8.1.3.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.1.3.2.1a-1LPP Periodic Assistance data delivery procedure
Figure 8.1.3.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.1.3.2.2a-1UE-initiated Periodic Assistance Data Transfer Procedure
Figure 8.1.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.1.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.2.2.3-1Information that may be transferred from UE to the LMF
Figure 8.2.3.2.1.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.2.3.2.1.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.2.3.2.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.2.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.2.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.3.2.2-1Information that may be transferred from ng-eNB to the LMF
Table 8.3.2.3-1Information that may be transferred from gNB to the LMF
Table 8.3.2.4-1Information that may be transferred from UE to the LMF
Figure 8.3.3.3-1LMF-initiated Location Information Transfer Procedure
Figure 8.3.3.3.2-1UE-initiated Location Information Delivery Procedure
Figure 8.3.4.3.1-1LMF-initiated Position Measurement Procedure
Table 8.4.2.1.0-1Information that may be transferred from the LMF to UE
Table 8.4.2.2.0-1Information that may be transferred from UE to the LMF
Figure 8.4.3.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.4.3.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.4.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.4.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.5.2.1.0-1Information that may be transferred from the LMF to UE
Table 8.5.2.2.0-1Information that may be transferred from the UE to the LMF
Figure 8.5.3.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.5.3.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.5.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.5.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.6.2.1.0-1Suggested UE Bluetooth AoA transmission parameters that may be transferred from LMF to the UE
Table 8.6.2.1.0-2Assistance data that may be transferred from LMF to the UE
Table 8.6.2.2.0-1Information that may be transferred from the UE to the LMF
Figure 8.6.3.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.6.3.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.6.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.6.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.7.2.1.0-1Information that may be transferred from the LMF to UE
Table 8.7.2.2.0-1Information that may be transferred from UE to the LMF
Figure 8.7.3.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.7.3.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.7.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.7.3.3.2-1UE-initiated Location Information Delivery Procedure
Table 8.8.2.2.0-1Sensor Measurement Information that may be transferred from UE to the LMF
Figure 8.8.3.2-1LMF-initiated Location Information Transfer Procedure
Figure 8.8.3.3-1UE-initiated Location Information Delivery Procedure
Table 8.9.2.2-1Information that may be transferred from UE to the LMF
Table 8.9.2.3-1Information that may be transferred from gNB to the LMF
Figure 8.9.3.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.9.3.3.2-1UE-initiated Location Information Delivery Procedure
Figure 8.9.4.3-1LMF-initiated Location Information Transfer Procedure
Table 8.10.2.1-1Assistance data that may be transferred from LMF to the UE
Table 8.10.2.2-1Measurement results that may be transferred from UE to the LMF
Table 8.10.2.3-1Assistance data that may be transferred from gNB to the LMF
Table 8.10.2.3-2UL information/UE configuration data that may be transferred from serving gNB to the LMF
Table 8.10.2.3-3Measurement results that may be transferred from gNBs to the LMF
Table 8.10.2.4-1Requested UL-SRS transmission characteristics information that may be transferred from LMF to gNB
Table 8.10.2.4-2TRP Measurement request information that may be transferred from LMF to gNBs
Table 8.10.2.4-3Requested positioning activation/deactivation information that may be transferred from LMF to gNB
Figure 8.10.3.1.2.1.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.10.3.1.2.1.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.10.3.1.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.10.3.1.3.2-1UE-initiated Location Information Delivery Procedure
Figure 8.10.3.2.1-1LMF-initiated TRP Information Exchange Procedure
Figure 8.10.3.2.1-2LMF-initiated UL Information Request Procedure
Figure 8.10.3.2.2-1LMF-initiated Location Information Transfer Procedure
Figure 8.10.3.2.3-1Positioning Activation/Deactivation Procedure
Figure 8.10.4-1Multi-RTT positioning procedure
Table 8.11.2.1.0-1Assistance data that may be transferred from LMF to the UE
Table 8.11.2.1.1-1Mapping of Integrity Parameters
Table 8.11.2.2-1Measurement results that may be transferred from UE to the LMF
Table 8.11.2.3-1Assistance data that may be transferred from gNB to the LMF
Figure 8.11.3.1.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.11.3.1.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.11.3.1.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.11.3.1.3.2-1UE-initiated Location Information Delivery Procedure
Figure 8.11.3.2.1.1-1LMF-initiated TRP Information Exchange Procedure
Table 8.12.2.1.0-1Assistance data that may be transferred from LMF to the UE
Table 8.12.2.1.1-1Mapping of Integrity Parameters
Table 8.12.2.2.0-1Measurement results that may be transferred from UE to the LMF
Table 8.12.2.3.0-1Assistance data that may be transferred from gNB to the LMF
Figure 8.12.3.1.2.1-1LMF-initiated Assistance Data Delivery Procedure
Figure 8.12.3.1.2.1a-1LPP Periodic Assistance data delivery procedure
Figure 8.12.3.1.2.2-1UE-initiated Assistance Data Transfer Procedure
Figure 8.12.3.1.2.2a-1UE-initiated Periodic Assistance Data Transfer Procedure
Figure 8.12.3.1.3.1-1LMF-initiated Location Information Transfer Procedure
Figure 8.12.3.1.3.2-1UE-initiated Location Information Delivery Procedure
Figure 8.12.3.2.1.1-1LMF-initiated TRP Information Exchange Procedure
Table 8.13.2.0-1Assistance data that may be transferred from gNB to the LMF
Table 8.13.2.1-1UE configuration data that may be transferred from serving gNB to the LMF
Table 8.13.2.2-1Measurement results that may be transferred from gNBs to the LMF
Table 8.13.2.3-1Requested UL-SRS transmission characteristics information that may be transferred from LMF to gNB
Table 8.13.2.3-2TRP Measurement request information that may be transferred from LMF to gNB
Table 8.13.2.3-3Requested positioning activation/deactivation information that may be transferred from LMF to gNB
Figure 8.13.3.2.1-1LMF-initiated UL Information Request Procedure
Figure 8.13.3.2.1-2LMF-initiated TRP Information Exchange Procedure
Figure 8.13.3.3-1LMF-initiated Location Information Transfer Procedure
Figure 8.13.3.3a-1Positioning Activation/Deactivation Procedure
Figure 8.13.3.4-1UL-TDOA positioning procedure
Table 8.14.2.0-1Assistance data that may be transferred from gNB to the LMF
Table 8.14.2.1-1UE configuration data that may be transferred from serving gNB to the LMF
Table 8.14.2.2-1Measurement results that may be transferred from gNBs to the LMF
Table 8.14.2.3-1Requested UL-SRS transmission characteristics information that may be transferred from LMF to gNB
Table 8.14.2.3-2TRP Measurement request information that may be transferred from LMF to gNB.
Table 8.14.2.3-3Requested positioning activation/deactivation information that may be transferred from LMF to gNB
Figure 8.14.3.2.1-1LMF-initiated UL Information Request Procedure
Figure 8.14.3.2.1-2LMF-initiated TRP Information Exchange Procedure
Figure 8.14.3.3-1LMF-initiated Location Information Transfer Procedure
Figure 8.14.3.3a-1Positioning Activation/Deactivation Procedure
Figure 8.14.3.4-1UL-AoA positioning procedure
Figure 8.15.2.2.2-1Assistance Data transfer procedure
Table 8.15.2.2.2-1Assistance data that may be transferred between endpoints.
Figure 8.15.2.2.3-1Location Information transfer procedure
Table 8.15.2.2.3-1Location request information that may be transferred between endpoints
Table 8.15.2.2.3-2Location result information that may be transferred between endpoints
Figure 8.15.3.2.2-1Assistance Data transfer procedure
Table 8.15.3.2.2-1Assistance data that may be transferred between endpoints.
Figure 8.15.3.2.3-1Location Information transfer procedure
Table 8.15.3.2.3-1Location request information that may be transferred between endpoints.
Table 8.15.3.2.3-2Location result information that may be transferred between endpoints
Figure 8.15.4.2.2-1Assistance Data transfer procedure
Table 8.15.4.2.2-1Assistance data that may be transferred between endpoints.
Figure 8.15.4.2.3-1Location Information transfer procedure
Table 8.15.4.2.3-1Location request information that may be transferred between endpoints.
Table 8.15.4.2.3-2Location result information that may be transferred between endpoints
Figure 8.15.5.2.2-1Assistance Data transfer procedure
Table 8.15.5.2.2-1Assistance data that may be transferred between endpoints.
Figure 8.15.5.2.3-1Location Information transfer procedure
Table 8.15.5.2.3-1Location request information that may be transferred between endpoints
Table 8.15.5.2.3-2Location result information that may be transferred between endpoints
Table A.1-1SUPL support of positioning methods
Figure A.2-1System reference architecture reference for Location Services in reference point representation
Figure A.3-1LPP session over SUPL
Figure A.3-2LPP session over SUPL
Figure A.4-1Transfer of OTDOA assistance data to UE via SUPL
Figure A.4-2Transfer to the UE via SUPL of OTDOA assistance data not already available at the LMF

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