Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation DN212926229 Issue 06A Approved on 2022-07-15 Single RAN Features Rel. 23R3-SR Operating Documentation, Issue 01 © 2023 Nokia. Nokia Condential Information. Use subject to agreed restrictions on disclosure and use. Nokia is committed to diversity and inclusion. We are continuously reviewing our customer documentation and consulting with standards bodies to ensure that terminology is inclusive and aligned with the industry. Our future customer documentation will be updated accordingly. This document includes Nokia proprietary and condential information, which may not be distributed or disclosed to any third parties without the prior written consent of Nokia. 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Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Table of Contents Summary of changes .................................................................................................................... 6 1 5GC000480 overview and benefits ........................................................................................... 8 2 5GC000480 requirements .......................................................................................................... 9 3 5GC000480 system impact ..................................................................................................... 10 3.1 5GC000480 impact on other features ....................................................................... 10 4 5GC000480 description ............................................................................................................ 11 5 5GC000480 reference data ..................................................................................................... 14 6 Activating gNB BC selection based on allowedBC-ListMRDC order from eNB ................. 22 7 Deactivating gNB BC selection based on allowedBC-ListMRDC order from eNB ............ 23 Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 3 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation List of Figures Figure 1 4 Radio Admission Control – SgNB addition .............................................................. 12 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation List of Tables Table 1 Table 2 Table 3 Issue 06A. Counters related to 5GC000480 ............................................................................... 15 Parameters related to 5GC000480 .......................................................................... 20 Parameter related to the gNB BC selection based on allowedBC-ListMRDC order from eNB functionality .................................................................................................. 21 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 5 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Summary of changes A list of changes between document issues. You can navigate through the respective changed topics. Changes between issues 06 (2022-05-11, 22R3) and 06A (2022-07-15, 22R3) 5GC000480 reference data The full name of the NRPMRNL miNrNTRAF parameter has been changed. The full name of the NRPMRNL miNrRacCu parameter has been changed. The full name of the NRPMRNL miNrRacDu parameter has been changed. Changes between issues 05 (2022-04-15, 22R2) and 06 (2022-05-11, 22R3) 5GC000480 description The information about activating the gNB BC selection based on allowedBC-ListMRDC order from eNB functionality has been updated. 5GC000480 reference data The parameter related to the gNB BC selection based on allowedBC-ListMRDC order from eNB functionality has been changed. Activating gNB BC selection based on allowedBC-ListMRDC order from eNB The NRBTS Temporary activation flags 1 (tmpActFeat1) parameter has been changed to the NRBTS Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB (actAllowedBcListMrdcPrioBcSel) parameter. Deactivating gNB BC selection based on allowedBC-ListMRDC order from eNB The NRBTS Temporary activation flags 1 (tmpActFeat1) parameter has been changed to the NRBTS Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB 6 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation (actAllowedBcListMrdcPrioBcSel) parameter. Changes between issues 04 (2022-03-23, 22R1) and 05 (2022-04-15, 22R2) Activating gNB BC selection based on allowedBC-ListMRDC order from eNB The parameter used to activate the Sorting the list in allowedBC-ListMRDC in eNB functionality has been updated. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 7 1. 5GC000480 overview and benefits Main idea of the feature and advantages it brings. The 5GC000480: Radio Admission Control for NSA Mode 3x Operation feature introduces radio admission control checks for the NSA mode 3x operation. Radio Admission Control feature protects L1 and L2 resources against high radio resource load. It provides the possibility for the operator to control amount of active users and users not having QoS flow data radio bearer on gNB and cell level. 8 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 2. 5GC000480 requirements Information on where to find hardware, software, and license requirements. Hardware and software preconditions For 5G supported hardware and software, see Reference Documentation/Compatibility matrix Operating Documentation/5G Features/List of Features and Documents Reference Documentation/ Compatibility matrix and Operating Documentation/ 5G Features/List of Features and Documents. For SRAN supported hardware and software, see Operating Documentation/Single RAN Features/List of Features and DocumentsOperating Documentation/Single RAN Features/List of Features and Documents. For ASiR System 5G supported hardware and software, see Operating Documentation/AirScale Indoor Radio System 5G/ASiR System 5G Features/List of Features Supported in ASiR System 5GOperating Documentation/AirScale Indoor Radio System 5G/ASiR System 5G Features/List of Features Supported in ASiR System 5G. For ASiR System supported hardware and software, see Operating Documentation/AirScale Indoor Radio System/ASiR System Features/List of Features in ASiR SystemOperating Documentation/AirScale Indoor Radio System/ASiR System Features/List of Features in ASiR System. Sales information For 5G and SRAN licensing information, see Operating Documentation/Single RAN System/LicensesOperating Documentation/5G and Single RAN System/Licenses. For ASiR System 5G licensing information, see Operating Documentation/AirScale Indoor Radio System 5G/ASiR System 5G Features/List of Features Supported in ASiR System 5GOperating Documentation/AirScale Indoor Radio System 5G/ASiR System 5G Features/List of Features Supported in ASiR System 5G. For ASiR System licensing information, see Operating Documentation/AirScale Indoor Radio System/ASiR System Features/List of Features in ASiR SystemOperating Documentation/AirScale Indoor Radio System/ASiR System Features/List of Features in ASiR System. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 9 3. 5GC000480 system impact The 5GC000480: Radio Admission Control for NSA Mode 3x Operation feature has no impact on interfaces, network management tools, system performance and capacity. 3.1 5GC000480 impact on other features There are no correlations between the 5GC000480: Radio Admission Control for NSA Mode 3x Operation feature and any other feature. 10 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 4. 5GC000480 description This feature introduces radio admission control checks for the NSA mode 3x operation. The 5GC000480: Radio Admission Control for NSA Mode 3x Operation feature introduces basic radio admission control for the gNB NSA mode 3x operation. The gNB check each procedure which tries to add an active UE, that is, a UE with at least one data radio bearer established, or procedures which try to add data radio bearers whether an operator-configurable number of: active UEs operating in NSA mode 3x per 5G cell, the cell level admission limit is based on user plane (UP), control plane (CP) HW capacity, channel state information (CSI) resource situation, physical uplink control channel (PUCCH) allocation is exceeded. active UEs operating in NSA mode 3x per gNodeB per NRCELLGRP is exceeded. non-GBR data radio bearers of active UEs operating in NSA mode 3x per NRCELLGRP is exceeded. The related request is rejected if one of the above conditions is fulfilled. An all-or-nothing approach is applied by the radio admission control. Limitation on number of Scell allocations per cell are introduced with mobility or carrier aggregation functions. Radio Admission Control (RAC) compares the amount of NSA users, non-GBR data radio bearers (DRBs) with operations, administration, and maintenance (OAM) parameters. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 11 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Figure 1: Radio Admission Control – SgNB addition gNB BC selection based on allowedBC-ListMRDC order from eNB The allowedBC-ListMRDC is an information element (IE) that consists of Multi-RAT Dual Connectivity (MR-DC) band combination candidates for EN-DC. The band combination (BC) selection functionality allows to maintain the order of BCs received from master eNB (MeNB) in allowedBC-ListMRDC IE during EN-DC connection setup or EN-DC connection modification. It selects the BC with the best 5G UL and DL throughput. In case of several BCs that propose the same 5G UL and DL throughput, gNB chooses the BC with 12 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A the lowest position index. This means that for gNB, the BC in the first position in allowedBCListMRDC has the highest priority. This mechanism applies to both NSA frequency range 1 (FR1) and NSA frequency range 2 (FR2). The gNB BC selection based on allowedBC-ListMRDC order from eNB functionality introduces the NRBTS Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB (actAllowedBcListMrdcPrioBcSel) parameter to activate this functionality. For more information, see Activating gNB BC selection based on allowedBC-ListMRDC order from eNB. Note: The gNB BC selection based on allowedBC-ListMRDC order from eNB is disabled by default. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 13 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 5. 5GC000480 reference data List of management data related to the feature: measurements and counters, and parameters. For reference data descriptions, see Reference Documentation/Reference document. Measurements and counters 14 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Table 1: Counters related to 5GC000480 Counter ID Counter name Measurement M55114C00001 The number of radio admission requests for NSA user Central unit (CU) Radio admission control measurement M55114C00002 The number of radio admitted UEs for NSA user Central unit (CU) Radio admission control measurement M55114C00003 The number of non-GBR DRB radio admission requests for NSA user Central unit (CU) Radio admission control measurement M55114C00004 The number of radio admitted non-GBR DRBs for NSA user Central unit (CU) Radio admission control measurement M55114C00005 The number of admission rejects due to lack of CP-UE capacity for NSA user Central unit (CU) Radio admission control measurement M55114C00006 The number of admission rejects due to lack of NSA user capacity Central unit (CU) Radio admission control measurement M55114C00007 The number of admission rejects due to lack of non-GBR capacity for NSA user Central unit (CU) Radio admission control measurement M55114C00008 Average number of NSA users Central unit (CU) Radio admission control measurement M55114C00009 Average number of NSA users denominator Central unit (CU) Radio admission control measurement M55114C00010 Peak number of NSA users Central unit (CU) Radio admission control measurement M55114C00011 Average admission holding time of NSA users Central unit (CU) Radio admission control measurement M55114C00012 Average admission holding time of NSA users denominator Central unit (CU) Radio admission control measurement Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 15 Counter ID Counter name Measurement M55114C00013 Peak holding time of NSA users Central unit (CU) Radio admission control measurement M55114C00016 The number of radio admission requests for handover for NSA users Central unit (CU) Radio admission control measurement M55114C00017 The number of non-GBR DRB radio admission requests for handovers for NSA user Central unit (CU) Radio admission control measurement M55114C00018 The number of radio admitted UEs for handover for NSA user Central unit (CU) Radio admission control measurement M55114C00019 The number of radio admitted non-GBR DRBs for handovers for NSA user Central unit (CU) Radio admission control measurement M55114C00020 The number of unsuccessful radio admissions for NSA users Central unit (CU) Radio admission control measurement M55114C00021 The number of radio admission requests for 1 Scell Central unit (CU) Radio admission control measurement M55114C00022 The number of radio admission requests for 2 Scells Central unit (CU) Radio admission control measurement M55114C00023 The number of radio admission requests for 3 Scells Central unit (CU) Radio admission control measurement M55114C00024 The number of radio admission requests for 4 Scells Central unit (CU) Radio admission control measurement M55114C00025 The number of radio admission requests for 5 Scells Central unit (CU) Radio admission control measurement 16 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Counter ID Counter name Measurement M55114C00026 The number of radio admission requests for 6 Scells Central unit (CU) Radio admission control measurement M55114C00027 The number of radio admission requests for 7 Scells Central unit (CU) Radio admission control measurement M55114C00028 The number of successful radio admissions for 1 Scell additions. Central unit (CU) Radio admission control measurement M55114C00029 The number of successful radio admissions for 2 Scell additions. Central unit (CU) Radio admission control measurement M55114C00030 The number of successful radio admissions for 3 Scell additions. Central unit (CU) Radio admission control measurement M55114C00031 The number of successful radio admissions for 4 Scell additions. Central unit (CU) Radio admission control measurement M55114C00032 The number of successful radio admissions for 5 Scell additions. Central unit (CU) Radio admission control measurement M55114C00033 The number of successful radio admissions for 6 Scell additions. Central unit (CU) Radio admission control measurement M55114C00034 The number of successful radio admissions for 7 Scell additions. Central unit (CU) Radio admission control measurement M55114C00035 The number of unsuccessful radio admissions for Scells additions. Central unit (CU) Radio admission control measurement M55114C00036 Peak number of NSA users in the cell group Central unit (CU) Radio admission control measurement Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 17 Counter ID Counter name Measurement M55114C00037 The number of PsCell releases due to PsCell change Central unit (CU) Radio admission control measurement M55114C00038 The number of successful PsCell changes Central unit (CU) Radio admission control measurement M55115C00002 The number of admission requests for NSA user Distributed unit (DU) Radio admission control measurement M55115C00003 The number of successful radio admitted NSA users Distributed unit (DU) Radio admission control measurement M55115C00004 The number of unsuccessful radio admissions for NSA users Distributed unit (DU) Radio admission control measurement M55115C00005 The number of unsuccessful radio admissions for NSA users due to no PUCCH capacity Distributed unit (DU) Radio admission control measurement M55115C00006 The number of radio admission requests for the Scell Distributed unit (DU) Radio admission control measurement M55115C00007 The number of successful radio admissions for the Scell Distributed unit (DU) Radio admission control measurement M55115C00008 The number of radio admission requests for 1 Scell Distributed unit (DU) Radio admission control measurement M55115C00009 The number of radio admission requests for 2 Scells Distributed unit (DU) Radio admission control measurement M55115C00010 The number of radio admission requests for 3 Scells Distributed unit (DU) Radio admission control measurement M55115C00011 The number of radio admission requests for 4 Scells Distributed unit (DU) Radio admission control measurement 18 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Counter ID Counter name Measurement M55115C00012 The number of radio admission requests for 5 Scells Distributed unit (DU) Radio admission control measurement M55115C00013 The number of radio admission requests for 6 Scells Distributed unit (DU) Radio admission control measurement M55115C00014 The number of radio admission requests for 7 Scells Distributed unit (DU) Radio admission control measurement M55115C00015 The number of successful radio admissions for 1 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00016 The number of successful radio admissions for 2 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00017 The number of successful radio admissions for 3 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00018 The number of successful radio admissions for 4 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00019 The number of successful radio admissions for 5 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00020 The number of successful radio admissions for 6 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00021 The number of successful radio admissions for 7 Scell additions. Distributed unit (DU) Radio admission control measurement M55115C00022 The number of PsCell change requests in DU Distributed unit (DU) Radio admission control measurement M55115C00023 The number of PsCell successful changes in DU Distributed unit (DU) Radio admission control measurement Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 19 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Counter ID Counter name Measurement M55131C00001 Peak number of NSA users in the CU Central unit (CU) traffic measurement Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Parameters Table 2: Parameters related to 5GC000480 Full name Abbreviated name Path Maximum number of S-Cell allocations in a cell for NSA operation maxNumOfSCellAlloc MRBTS/NRBTS/NRCELL Maximum number of users in a NR cell for NSA operation maxNumOfUsersPerCel l MRBTS/NRBTS/NRCELL Additional number of user capacity for handovers addNumOfHoUsers MRBTS/NRBTS/NRCELLGRP Additional number of nonGBR capacity for handovers addNumOfNonGBRBeare rsHo MRBTS/NRBTS/NRCELLGRP Maximum number of non-GBR data radio bearers maxNumOfNonGBRBeare rs MRBTS/NRBTS/NRCELLGRP Maximum number of users in a NR Cell Group for NSA operation maxNumOfUsers MRBTS/NRBTS/NRCELLGRP SP-Cell change enabled spCellChangeEnabled MRBTS/NRBTS/NRCELLGRP Central unit (CU) traffic measurement miNrNTRAF MRBTS/NRBTS/NRPMRNL Central unit (CU) Radio admission control measurement miNrRacCu MRBTS/NRBTS/NRPMRNL Distributed unit (DU) Radio admission control measurement miNrRacDu MRBTS/NRBTS/NRPMRNL 20 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Table 3: Parameter related to the gNB BC selection based on allowedBC-ListMRDC order from eNB functionality Full name Abbreviated name Path Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB actAllowedBcListMrdcPri oBcSel MRBTS/NRBTS There are no alarms, faults, key performance indicators (KPIs) related to the 5GC000480: Radio Admission Control for NSA Mode 3x Operation feature. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 21 Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 6. Activating gNB BC selection based on allowedBCListMRDC order from eNB Instructions to activate the gNB band combination (BC) selection based on allowedBCListMRDC order from eNB functionality Before you start See Configuring Features with Web Element Manager for general management tool instructions. Check if the BTS is commissioned and operational. Check if BTS elements are detected and configured. Modifying the settings of the parameters used in this procedure doesn't interrupt service availability. Procedure 1 Go to the Parameter Editor. 2 Set the NRBTS Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB (actAllowedBcListMrdcPrioBcSel) parameter to true. Object path: MRBTS›NRBTS 3 Optional: Set the NRDCDPR Activate sorting the band combination list for MRDC (actSortBcListEnDc) parameter to true. This is an optional step but it's highly recommended to activate the Sorting the list in allowedBC-ListMRDC in eNB functionality. For more information, see Single RAN Operating Documentation / Single RAN Features / 5G EN-DC Option 3x document / Sorting the list in allowedBC-ListMRDC in eNB section. Result The selection of band combination based on allowedBC-ListMRDC order is now enabled. 22 © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. Issue 06A Copyrighted material licensed to ferdi.ceylan@telekom.de on 09-07-2023. No further reproduction or networking is permitted. Distributed by Nokia. 5GC000480: Radio Admission Control for NSA Mode 3x Operation 7. Deactivating gNB BC selection based on allowedBCListMRDC order from eNB Instructions to deactivate the gNB band combination (BC) selection based on allowedBCListMRDC order from eNB functionality Before you start See Configuring Features with Web Element Manager for general management tool instructions. Check if the BTS is commissioned and operational. Check if BTS elements are detected and configured. Modifying the settings of the parameters used in this procedure doesn't interrupt service availability. Procedure 1 Go to the Parameter Editor. 2 Set the NRBTS Activate prioritization of band combinations based on allowedBC-ListMRDC order applied by MeNB (actAllowedBcListMrdcPrioBcSel) parameter to false. Object path: MRBTS›NRBTS Result The selection of band combination based on allowedBC-ListMRDC order is now disabled. Issue 06A. © 2023 Nokia. Nokia Confidential Information Use subject to agreed restrictions on disclosure and use. 23
