ETSI TS 138 473 V15.18.0 (2024-09)

5G; NG-RAN; F1 Application Protocol (F1AP) (3GPP TS 38.473 version 15.18.0 Release 15)

RTS/TSGR-0338473vfi0

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN 3 - lub specification, lur specification, lu specification and UTRAN & O&M
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 26-Sep-2024

Standards Content (Sample)

TECHNICAL SPECIFICATION
5G;
NG-RAN;
F1 Application Protocol (F1AP)
(3GPP TS 38.473 version 15.18.0 Release 15)

3GPP TS 38.473 version 15.18.0 Release 15 1 ETSI TS 138 473 V15.18.0 (2024-09)

Reference
RTS/TSGR-0338473vfi0
Keywords
5G
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ETSI
3GPP TS 38.473 version 15.18.0 Release 15 2 ETSI TS 138 473 V15.18.0 (2024-09)
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ETSI
3GPP TS 38.473 version 15.18.0 Release 15 3 ETSI TS 138 473 V15.18.0 (2024-09)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 9
1 Scope . 10
2 References . 10
3 Definitions and abbreviations . 11
3.1 Definitions . 11
3.2 Abbreviations . 12
4 General . 12
4.1 Procedure specification principles . 12
4.2 Forwards and backwards compatibility . 13
4.3 Specification notations . 13
5 F1AP services . 13
6 Services expected from signalling transport . 14
7 Functions of F1AP . . 14
8 F1AP procedures . 14
8.1 List of F1AP Elementary procedures . 14
8.2 Interface Management procedures . 15
8.2.1 Reset . 15
8.2.1.1 General . 15
8.2.1.2 Successful Operation . 15
8.2.1.2.1 Reset Procedure Initiated from the gNB-CU . 15
8.2.1.2.2 Reset Procedure Initiated from the gNB-DU . 16
8.2.1.3 Abnormal Conditions . 17
8.2.2 Error Indication . 17
8.2.2.1 General . 17
8.2.2.2 Successful Operation . 17
8.2.2.3 Abnormal Conditions . 18
8.2.3 F1 Setup . 18
8.2.3.1 General . 18
8.2.3.2 Successful Operation . 18
8.2.3.3 Unsuccessful Operation . 19
8.2.3.4 Abnormal Conditions . 19
8.2.4 gNB-DU Configuration Update . 19
8.2.4.1 General . 19
8.2.4.2 Successful Operation . 20
8.2.4.3 Unsuccessful Operation . 21
8.2.4.4 Abnormal Conditions . 21
8.2.5 gNB-CU Configuration Update . 21
8.2.5.1 General . 21
8.2.5.2 Successful Operation . 22
8.2.5.3 Unsuccessful Operation . 23
8.2.5.4 Abnormal Conditions . 23
8.2.6 gNB-DU Resource Coordination . 23
8.2.6.1 General . 23
8.2.6.2 Successful Operation . 24
8.2.7 gNB-DU Status Indication . 24
8.2.7.1 General . 24
8.2.7.2 Successful Operation . 24
8.2.7.3 Abnormal Conditions . 24
ETSI
3GPP TS 38.473 version 15.18.0 Release 15 4 ETSI TS 138 473 V15.18.0 (2024-09)
8.2.8 F1 Removal . 25
8.2.8.1 General . 25
8.2.8.2 Successful Operation . 25
8.2.8.3 Unsuccessful Operation . 26
8.2.8.4 Abnormal Conditions . 26
8.2.9 Network Access Rate Reduction . 26
8.2.9.1 General . 26
8.2.9.2 Successful operation. 27
8.2.9.3 Abnormal Conditions . 27
8.3 UE Context Management procedures . 27
8.3.1 UE Context Setup . 27
8.3.1.1 General . 27
8.3.1.2 Successful Operation . 27
8.3.1.3 Unsuccessful Operation . 30
8.3.1.4 Abnormal Conditions . 31
8.3.2 UE Context Release Request (gNB-DU initiated) . 31
8.3.2.1 General . 31
8.3.2.2 Successful Operation . 31
8.3.2.3 Abnormal Conditions . 31
8.3.3 UE Context Release (gNB-CU initiated) . 32
8.3.3.1 General . 32
8.3.3.2 Successful Operation . 32
8.3.3.4 Abnormal Conditions . 32
8.3.4 UE Context Modification (gNB-CU initiated) . 32
8.3.4.1 General . 32
8.3.4.2 Successful Operation . 33
8.3.4.3 Unsuccessful Operation . 37
8.3.4.4 Abnormal Conditions . 37
8.3.5 UE Context Modification Required (gNB-DU initiated) . 37
8.3.5.1 General . 37
8.3.5.2 Successful Operation . 38
8.3.5.2A Unsuccessful Operation . 39
8.3.5.3 Abnormal Conditions . 39
8.3.6 UE Inactivity Notification . 39
8.3.6.1 General . 39
8.3.6.2 Successful Operation . 39
8.3.6.3 Abnormal Conditions . 39
8.3.7 Notify . 40
8.3.7.1 General . 40
8.3.7.2 Successful Operation . 40
8.3.7.3 Abnormal Conditions . 40
8.4 RRC Message Transfer procedures . 40
8.4.1 Initial UL RRC Message Transfer . 40
8.4.1.1 General . 40
8.4.1.2 Successful operation. 41
8.4.1.3 Abnormal Conditions . 41
8.4.2 DL RRC Message Transfer . 41
8.4.2.1 General . 41
8.4.2.2 Successful operation. 41
8.4.2.3 Abnormal Conditions . 42
8.4.3 UL RRC Message Transfer . 42
8.4.3.1 General . 42
8.4.3.2 Successful operation. 42
8.4.3.3 Abnormal Conditions . 43
8.4.4 RRC Delivery Report. 43
8.4.4.1 General . 43
8.4.4.2 Successful operation. 43
8.4.4.3 Abnormal Conditions . 43
8.5 Warning Message Transmission Procedures . 43
8.5.1 Write-Replace Warning . 43
8.5.1.1 General . 43
8.5.1.2 Successful Operation . 44
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3GPP TS 38.473 version 15.18.0 Release 15 5 ETSI TS 138 473 V15.18.0 (2024-09)
8.5.1.3 Unsuccessful Operation . 44
8.5.1.4 Abnormal Conditions . 44
8.5.2 PWS Cancel . 45
8.5.2.1 General . 45
8.5.2.2 Successful Operation . 45
8.5.2.3 Unsuccessful Operation . 45
8.5.2.4 Abnormal Conditions . 45
8.5.3 PWS Restart Indication . 46
8.5.3.1 General . 46
8.5.3.2 Successful Operation . 46
8.5.3.3 Abnormal Conditions . 46
8.5.4 PWS Failure Indication . 46
8.5.4.1 General . 46
8.5.4.2 Successful Operation . 46
8.5.4.3 Abnormal Conditions . 46
8.6 System Information Procedures . 47
8.6.1 System Information Delivery . 47
8.6.1.1 General . 47
8.6.1.2 Successful Operation . 47
8.6.1.3 Abnormal Conditions . 47
8.7 Paging procedures . 47
8.7.1 Paging . 47
8.7.1.1 General . 47
8.7.1.2 Successful Operation . 48
8.7.1.3 Abnormal Conditions . 48
9 Elements for F1AP Communication . 48
9.1 General . 48
9.2 Message Functional Definition and Content . 49
9.2.1 Interface Management messages . 49
9.2.1.1 RESET . 49
9.2.1.2 RESET ACKNOWLEDGE . 49
9.2.1.3 ERROR INDICATION . 50
9.2.1.4 F1 SETUP REQUEST . 50
9.2.1.5 F1 SETUP RESPONSE . 51
9.2.1.6 F1 SETUP FAILURE . 51
9.2.1.7 GNB-DU CONFIGURATION UPDATE . 51
9.2.1.8 GNB-DU CONFIGURATION UPDATE ACKNOWLEDGE . 53
9.2.1.9 GNB-DU CONFIGURATION UPDATE FAILURE . 54
9.2.1.10 GNB-CU CONFIGURATION UPDATE . 54
9.2.1.11 GNB-CU CONFIGURATION UPDATE ACKNOWLEDGE . 57
9.2.1.12 GNB-CU CONFIGURATION UPDATE FAILURE . 58
9.2.1.13 GNB-DU RESOURCE COORDINATION REQUEST . 58
9.2.1.14 GNB-DU RESOURCE COORDINATION RESPONSE . 59
9.2.1.15 GNB-DU STATUS INDICATION . 59
9.2.1.16 F1 REMOVAL REQUEST . 59
9.2.1.17 F1 REMOVAL RESPONSE . 60
9.2.1.18 F1 REMOVAL FAILURE . 60
9.2.1.19 NETWORK ACCESS RATE REDUCTION . 60
9.2.2 UE Context Management messages . 60
9.2.2.1 UE CONTEXT SETUP REQUEST . 60
9.2.2.2 UE CONTEXT SETUP RESPONSE . 63
9.2.2.3 UE CONTEXT SETUP FAILURE . 65
9.2.2.4 UE CONTEXT RELEASE REQUEST . 65
9.2.2.5 UE CONTEXT RELEASE COMMAND . 66
9.2.2.6 UE CONTEXT RELEASE COMPLETE . 66
9.2.2.7 UE CONTEXT MODIFICATION REQUEST . 67
9.2.2.8 UE CONTEXT MODIFICATION RESPONSE . 71
9.2.2.9 UE CONTEXT MODIFICATION FAILURE . 73
9.2.2.10 UE CONTEXT MODIFICATION REQUIRED. 74
9.2.2.11 UE CONTEXT MODIFICATION CONFIRM . 75
9.2.2.11A UE CONTEXT MODIFICATION REFUSE . 76
ETSI
3GPP TS 38.473 version 15.18.0 Release 15 6 ETSI TS 138 473 V15.18.0 (2024-09)
9.2.2.12 UE INACTIVITY NOTIFICATION . 76
9.2.2.13 NOTIFY . 77
9.2.3 RRC Message Transfer messages . 77
9.2.3.1 INITIAL UL RRC MESSAGE TRANSFER . 77
9.2.3.2 DL RRC MESSAGE TRANSFER . 78
9.2.3.3 UL RRC MESSAGE TRANSFER . 79
9.2.3.4 RRC DELIVERY REPORT . 79
9.2.4 Warning Message Transmission Messages . 79
9.2.4.1 WRITE-REPLACE WARNING REQUEST . 79
9.2.4.2 WRITE-REPLACE WARNING RESPONSE . 80
9.2.4.3 PWS CANCEL REQUEST . 81
9.2.4.4 PWS CANCEL RESPONSE . 81
9.2.4.5 PWS RESTART INDICATION . 82
9.2.4.6 PWS FAILURE INDICATION . 82
9.2.5 System Information messages. 83
9.2.5.1 SYSTEM INFORMATION DELIVERY COMMAND . 83
9.2.6 Paging messages . 83
9.2.6.1 PAGING . 83
9.3 Information Element Definitions . 83
9.3.1 Radio Network Layer Related IEs . 84
9.3.1.1 Message Type . 84
9.3.1.2 Cause . 84
9.3.1.3 Criticality Diagnostics . 86
9.3.1.4 gNB-CU UE F1AP ID . 87
9.3.1.5 gNB-DU UE F1AP ID . 87
9.3.1.6 RRC-Container . 87
9.3.1.7 SRB ID . 87
9.3.1.8 DRB ID . 88
9.3.1.9 gNB-DU ID . 88
9.3.1.10 Served Cell Information . 88
9.3.1.11 Transmission Action Indicator . 90
9.3.1.12 NR CGI . 90
9.3.1.13 Time To wait . 90
9.3.1.14 PLMN Identity . 90
9.3.1.15 Transmission Bandwidth . 91
9.3.1.16 Void. 91
9.3.1.17 NR Frequency Info . 91
9.3.1.18 gNB-DU System Information . 92
9.3.1.19 E-UTRAN QoS . 92
9.3.1.20 Allocation and Retention Priority . 92
9.3.1.21 GBR QoS Information . 93
9.3.1.22 Bit Rate . 94
9.3.1.23 Transaction ID . 94
9.3.1.24 DRX Cycle . 94
9.3.1.25 CU to DU RRC Information . 95
9.3.1.26 DU to CU RRC Information . 96
9.3.1.27 RLC Mode. 98
9.3.1.28 SUL Information . 98
9.3.1.29 5GS TAC . 98
9.3.1.29a Configured EPS TAC . 99
9.3.1.30 RRC Reconfiguration Complete Indicator . 99
9.3.1.31 UL Configuration . 99
9.3.1.32 C-RNTI . 99
9.3.1.33 Cell UL Configured. 99
9.3.1.34 RAT-Frequency Priority Information . 100
9.3.1.35 LCID . 100
9.3.1.36 Duplication activation . 100
9.3.1.37 Slice Support List . 100
9.3.1.38 S-NSSAI . 100
9.3.1.39 UE Identity Index value . 101
9.3.1.40 Paging DRX . 101
9.3.1.41 Paging Priority . 101
ETSI
3GPP TS 38.473 version 15.18.0 Release 15 7 ETSI TS 138 473 V15.18.0 (2024-09)
9.3.1.42 gNB-CU System Information. 101
9.3.1.43 RAN UE Paging identity . 102
9.3.1.44 CN UE Paging Identity . 102
9.3.1.45 QoS Flow Level QoS Parameters . 102
9.3.1.46 GBR QoS Flow Information . 103
9.3.1.47 Dynamic 5QI Descriptor . 103
9.3.1.48 NG-RAN Allocation and Retention Priority . 104
9.3.1.49 Non Dynamic 5QI Descriptor . 105
9.3.1.50
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