Tài liệu 5G RAN Huawei mô tả chi tiết về các KPI ( RRC connection, thoughput, Handover, Accessbility..) và các công thức tính liên quan. Tài liệu này rất có ích cho các bạn đang hoạt động trong mảng tối ưu, xử lý KPI, worse cells, troubleshooting...Hy vọng mang lại lợi ích cho các bạn
5G RAN V100R015C10 KPI Reference Issue 01 Date 2019-06-06 HUAWEI TECHNOLOGIES CO., LTD Copyright © Huawei Technologies Co., Ltd 2019 All rights reserved No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd All other trademarks and trade names mentioned in this document are the property of their respective holders Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied The information in this document is subject to change without notice Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document not constitute a warranty of any kind, express or implied Huawei Technologies Co., Ltd Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: https://www.huawei.com Email: support@huawei.com Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd i 5G RAN KPI Reference Contents Contents 5G RAN KPI Reference 1.1 Changes in 5G RAN KPI Reference 1.2 Accessibility KPIs 1.2.1 RRC Setup Success Rate (CU) 1.2.2 RRC Setup Success Rate (Service) (CU) 1.2.3 RRC Setup Success Rate (Signaling) (CU) 1.2.4 NGSIG Connection Setup Success Rate (CU) 1.2.5 QoS Flow Setup Success Rate (CU) 10 1.2.6 Call Setup Success Rate (CU) 13 1.3 Retainability KPIs .14 1.4 Mobility KPIs 14 1.4.1 Intra-Frequency Handover Out Success Rate (CU) 14 1.4.2 Intra-RAT Handover In Success Rate (CU) 22 1.4.3 Inter-RAT Handover Out Success Rate (NR to LTE) (CU) .26 1.5 Service Integrity KPIs 28 1.5.1 User Downlink Average Throughput (DU) 28 1.5.2 User Uplink Average Throughput (DU) 28 1.5.3 Cell Downlink Average Throughput (DU) 29 1.5.4 Cell Uplink Average Throughput (DU) 30 1.6 Utilization KPIs 30 1.6.1 Downlink Resource Block Utilizing Rate (DU) 30 1.6.2 Uplink Resource Block Utilizing Rate (DU) 31 1.6.3 Average CPU Load 31 1.7 Availability KPIs 32 1.7.1 Radio Network Unavailability Rate (CU) 32 1.8 Traffic KPIs 33 1.8.1 Downlink Traffic Volume (DU) .33 1.8.2 Uplink Traffic Volume (DU) 33 1.8.3 Average User Number (CU) 34 1.8.4 Maximum User Number 35 1.9 NSA DC Accessibility and Mobility KPIs 35 1.9.1 SgNB Addition Success Rate 35 1.9.2 Intra-SgNB PSCell Change Success Rate 36 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd ii 5G RAN KPI Reference Contents 1.9.3 Inter-SgNB PSCell Change Success Rate 37 1.9.4 SgNB-Triggered SgNB Abnormal Release Rate .38 1.10 Reference Documents .39 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd iii 5G RAN KPI Reference 5G RAN KPI Reference 5G RAN KPI Reference Purpose This document describes basic key performance indicators (KPIs) in the 5G RAN The KPI formulas are used in common scenarios Only associated key counters are provided in this document l The KPIs described in this document are for common scenarios, and the formulas are for instruction only For details on KPIs that are closely related to features, see the related feature parameter description l This document lists only key counters associated with the KPIs For details on other counters used on the live network, see 3900 & 5900 Series Base Station Performance Counter Reference l If 3GPP protocols are updated, KPIs described in this document may change Intended Audience This document is intended for: l Network planners l Network administrators l Network operators Product Versions The following table lists the product versions related to this document Product Name Solution Version Product Version DBS5900 l SRAN15.1 V100R015C10 DBS5900 LampSite l 5G RAN2.1 DBS3900 DBS3900 LampSite BTS3900 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference Product Name Solution Version Product Version BTS5900 BTS3900A BTS5900A BTS3900L BTS5900L BTS3900AL BTS5900AL Organization 1.1 Changes in 5G RAN KPI Reference 1.2 Accessibility KPIs 1.3 Retainability KPIs 1.4 Mobility KPIs 1.5 Service Integrity KPIs 1.6 Utilization KPIs 1.7 Availability KPIs 1.8 Traffic KPIs 1.9 NSA DC Accessibility and Mobility KPIs 1.10 Reference Documents 1.1 Changes in 5G RAN KPI Reference This chapter describes the changes in 5G RAN KPI Reference 01 (2019-06-06) This is the first commercial release Compared with Draft A (2018-12-30), this issue includes the following new topics: 1.9 NSA DC Accessibility and Mobility KPIs Compared with Draft A (2018-12-30), this issue does not include any changes or exclude any topics Draft A (2018-12-30) This is a draft Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference Compared with V100R013C10, this issue includes the following changes: l Added KPIs in 1.2 Accessibility KPIs, 1.3 Retainability KPIs, 1.4 Mobility KPIs, and 1.7 Availability KPIs l Update KPIs in 1.5.1 User Downlink Average Throughput (DU) and 1.5.2 User Uplink Average Throughput (DU) l Revised KPI names to add CU or DU as suffix to KPI names 1.2 Accessibility KPIs Accessibility KPIs are used to measure the probability that a user successfully accesses the network and requests services The services include RRC connection setup, NGSIG setup, PDU session setup, and QoS flow setup 1.2.1 RRC Setup Success Rate (CU) Description According to 3GPP TS 38.331, the RRC connection setup procedure is triggered by different causes The upper layer determines the cause value for the RRC connection setup initiated by the UE The RRC connection setup for the cause value of mo-signaling is related to signaling The RRC connection setup for other reasons is related to services This KPI is calculated by the gNodeB when the UE initiates an RRC connection setup procedure As shown at point A in Figure 1-1, the total number of RRC connection setup attempts due to different causes is incremented by each time the gNodeB receives an RRCSetupRequest message from the UE As shown at point C, the total number of successful RRC connection setups due to different setup causes is incremented by Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-1 Measurement points for RRC connection setup Definition The RRC Setup Success Rate KPI is defined in Table 1-1 Table 1-1 RRC Setup Success Rate (CU) Issue 01 (2019-06-06) Name RRC Setup Success Rate (CU) Object Cell or radio network Formul a RRCS_SR = (RRCSetupSuccess/RRCSetupAttempt) x 100% Associa ted Counte rs RRC Setup Success Rate = (N.RRC.SetupReq.Succ/N.RRC.SetupReq.Att) x 100% Unit % Note None Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference 1.2.2 RRC Setup Success Rate (Service) (CU) Description According to 3GPP TS 38.331, the RRC connection setup procedure is triggered by different causes The upper layer determines the cause value for the RRC connection setup initiated by the UE The RRC connection setup for the cause value of mo-signaling is related to signaling The RRC connection setup for other reasons is related to services This KPI is used to evaluate the RRC connection setup success rate of services in a cell or on the entire network This KPI is calculated by the gNodeB when the UE initiates an RRC connection setup procedure As shown at point A in Figure 1-2, the total number of RRC connection setup attempts due to services is incremented by each time the gNodeB receives an RRCSetupRequest message from the UE As shown at point C, the number of successful RRC connection setups due to services is incremented by Figure 1-2 Measurement points for RRC connection setup Definition The RRC Setup Success Rate (Service) KPI is defined in Table 1-2 Table 1-2 RRC Setup Success Rate (Service) (CU) Name Issue 01 (2019-06-06) RRC Setup Success Rate (Service) (CU) Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference Object Cell or radio network Formul a RRCS_SRservice = (RRCSetupSuccessservice/RRCSetupAttemptservice) x 100% Associat ed Counter s RRC Setup Success Rate (Service) = ((N.RRC.SetupReq.Succ.Emc + N.RRC.SetupReq.Succ.HighPri + N.RRC.SetupReq.Succ.Mt + N.RRC.SetupReq.Succ.MoData + N.RRC.SetupReq.Succ.MoVoiceCall + N.RRC.SetupReq.Succ.MpsPri + N.RRC.SetupReq.Succ.MoSms + N.RRC.SetupReq.Succ.MoVideoCall)/(N.RRC.SetupReq.Att.Emc + N.RRC.SetupReq.Att.HighPri + N.RRC.SetupReq.Att.Mt + N.RRC.SetupReq.Att.MoData + N.RRC.SetupReq.Att.MoVoiceCall + N.RRC.SetupReq.Att.MpsPri + N.RRC.SetupReq.Att.MoSms + N.RRC.SetupReq.Att.MoVideoCall)) x 100% Unit % Note None 1.2.3 RRC Setup Success Rate (Signaling) (CU) Description This KPI is used to evaluate the RRC connection setup success rate of signaling in a cell or on the entire network This KPI indicates the RRC setup success rate of the signaling-related cause (mo-signaling) This KPI is calculated by the gNodeB when the UE initiates an RRC connection setup procedure As shown at point A in Figure 1-3, the number of RRC connection setup attempts due to signaling is incremented by each time the gNodeB receives an RRCSetupRequest message from the UE As shown at point C, the number of successful RRC connection setups due to signaling is incremented by Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 5G RAN KPI Reference 5G RAN KPI Reference target gNodeB receives an RRC Reestablishment Complete message from the UE and sends a UE CONTEXT RELEASE message to the source gNodeB over the Xn interface to instruct the source gNodeB to release the UE context, the target gNodeB counts the number of successful incoming handover executions in the target cell at point C Figure 1-20 Xn-based inter-gNodeB incoming handover with RRC connection reestablishment to the target cell Figure 1-21 illustrates NG-based inter-gNodeB incoming handover with RRC connection reestablishment to the target cell When the target gNodeB sends a Handover Request Acknowledge message to the source gNodeB or AMF, the target gNodeB counts the number of incoming handover execution attempts in the target cell at point B When the target gNodeB receives an RRC Reestablishment Complete message from the UE and sends a Handover Notify message to the AMF over the NG interface to instruct the source gNodeB to release the UE context, the target gNodeB counts the number of successful incoming handover executions in the target cell at point C Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 25 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-21 NG-based inter-gNodeB incoming handover with RRC connection reestablishment to the target cell Definition The Intra-RAT Handover In Success Rate KPI is defined in Table 1-8 Table 1-8 Intra-RAT Handover In Success Rate (CU) Name Intra-RAT Handover In Success Rate (CU) Object Cell or radio network Formul a Intra-RATHOIn_SR = (Intra-RATHOInSuccess/Intra-RATHOInAttempt) x 100% Associat ed Counter s Intra-RAT Handover In Success Rate = ((N.HO.Ng.IntergNB.ExecSuccIn + N.HO.IntragNB.ExecSuccIn + N.HO.Xn.IntergNB.ExecSuccIn)/ (N.HO.Ng.IntergNB.ExecAttIn + N.HO.IntragNB.ExecAttIn + N.HO.Xn.IntergNB.ExecAttIn)) x 100% Unit % Note None 1.4.3 Inter-RAT Handover Out Success Rate (NR to LTE) (CU) Description This KPI indicates the inter-RAT outgoing handover success rate from NR to LTE Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 26 5G RAN KPI Reference 5G RAN KPI Reference The number of NR-to-LTE outgoing handover execution attempts is incremented by as shown in Figure 1-22 after the gNodeB sends a HANDOVER COMMAND message to the UE The number of successful NR-to-LTE outgoing handover executions is incremented by at point C when the gNodeB receives a UE CONTEXT RELEASE COMMAND message from the AMF after the UE accesses the LTE network Figure 1-22 Inter-RAT handover (NR to LTE) Definition The Inter-RAT Handover Out Success Rate (NR to LTE) KPI is defined in Table 1-9 Table 1-9 Inter-RAT Handover Out Success Rate (NR to LTE) (CU) Issue 01 (2019-06-06) Name Inter-RAT Handover Out Success Rate (NR to LTE) (CU) Object Cell or radio network Formul a IRATHO_N2E_SR = (IRATHO_N2E_Success/IRATHO_N2E_Attempt) x 100% Associat ed Counter s Inter-RAT Handover Out Success Rate (NR to LTE) = (N.HO.InterRAT.N2E.ExecSuccOut)/(N.HO.InterRAT.N2E.ExecAttOut) x 100% Unit % Copyright © Huawei Technologies Co., Ltd 27 5G RAN KPI Reference 5G RAN KPI Reference Note If the failure caused by the core network is not calculated in some scenarios, the following formula can be used: Inter-RAT Handover Out Success Rate (NR to LTE) = (N.HO.InterRAT.N2E.ExecSuccOut – N.HO.InterRAT.N2E.AMFAbnormRsp)/(N.HO.InterRAT.N2E.ExecAttOut) x 100% 1.5 Service Integrity KPIs Service integrity KPIs are used to evaluate the service quality of end-users in the 5G RAN 1.5.1 User Downlink Average Throughput (DU) Description This KPI indicates the average downlink UE throughput in a cell Definition The User Downlink Average Throughput KPI is defined in Table 1-10 and is calculated based on the total traffic volume and data transmission duration of a UE in the downlink when the tail packet transmission is not counted Table 1-10 User Downlink Average Throughput (DU) Name User Downlink Average Throughput (DU) Object Cell or radio network Formul a UserDLAveThp = UserDLRmvLastSlotTrafficVolume/UserDLRmvLastSlotTransferTime Associa ted Counte rs User Downlink Average Throughput = (N.ThpVol.DL – N.ThpVol.DL.LastSlot)/N.ThpTime.DL.RmvLastSlot Unit Gbit/s Note None 1.5.2 User Uplink Average Throughput (DU) Description This KPI indicates the average uplink UE throughput in a cell Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 28 5G RAN KPI Reference 5G RAN KPI Reference Definition The User Uplink Average Throughput KPI is defined in Table 1-11 and is calculated based on the total traffic volume and data transmission duration of a UE in the uplink when the small packet transmission is not counted Table 1-11 User Uplink Average Throughput (DU) Name User Uplink Average Throughput (DU) Object Cell or radio network Formul a UserULAveThp = UserULRmvSmallPktTrafficVolume/UserULRmvSmallPktTransferTime Associat ed Counter s User Uplink Average Throughput = (N.ThpVol.UL – N.ThpVol.UE.UL.SmallPkt)/N.ThpTime.UE.UL.RmvSmallPkt Unit Gbit/s Note None 1.5.3 Cell Downlink Average Throughput (DU) Description This KPI indicates the average downlink cell throughput, which reflects the cell capacity in the downlink Definition The Cell Downlink Average Throughput KPI is defined in Table 1-12 and is calculated based on the total traffic volume and data transmission duration in the downlink of a cell Table 1-12 Cell Downlink Average Throughput (DU) Issue 01 (2019-06-06) Name Cell Downlink Average Throughput (DU) Object Cell or radio network Formul a CellDLAveThp = CellDLTrafficVolume/CellDLTransferTime Associat ed Counter s Cell Downlink Average Throughput = N.ThpVol.DL.Cell/N.ThpTime.DL.Cell Unit Gbit/s Note None Copyright © Huawei Technologies Co., Ltd 29 5G RAN KPI Reference 5G RAN KPI Reference 1.5.4 Cell Uplink Average Throughput (DU) Description This KPI indicates the average uplink cell throughput, which reflects the cell capacity in the uplink Definition The Cell Uplink Average Throughput KPI is defined in Table 1-13 and is calculated based on the total traffic volume and data transmission duration in the uplink of a cell Table 1-13 Cell Uplink Average Throughput (DU) Name Cell Uplink Average Throughput (DU) Object Cell or radio network Formul a CellULAveThp = CellULTrafficVolume/CellULTransferTime Associat ed Counter s Cell Uplink Average Throughput = N.ThpVol.UL.Cell/N.ThpTime.UL.Cell Unit Gbit/s Note None 1.6 Utilization KPIs Utilization KPIs are used to evaluate the capabilities, such as the capability to meet traffic demands, in specific internal conditions 1.6.1 Downlink Resource Block Utilizing Rate (DU) Description This KPI indicates the busy-hour downlink RB usage in each cell or network Definition The Downlink Resource Block Utilizing Rate KPI is defined in Table 1-14 Table 1-14 Downlink Resource Block Utilizing Rate (DU) Name Issue 01 (2019-06-06) Downlink Resource Block Utilizing Rate (DU) Copyright © Huawei Technologies Co., Ltd 30 5G RAN KPI Reference 5G RAN KPI Reference Object Cell or radio network Formul a RB_URDL = (RB_UsedDL/RB_AvailableDL) x 100% Associat ed Counter s Downlink Resource Block Utilizing Rate = (N.PRB.DL.Used.Avg/ N.PRB.DL.Avail.Avg) x 100% Unit % Note None 1.6.2 Uplink Resource Block Utilizing Rate (DU) Description This KPI indicates the busy-hour uplink RB usage in each cell or network Definition The Uplink Resource Block Utilizing Rate KPI is defined in Table 1-15 Table 1-15 Uplink Resource Block Utilizing Rate (DU) Name Uplink Resource Block Utilizing Rate (DU) Object Cell or radio network Formul a RB_URUL = (RB_UsedUL/RB_AvailableUL) x 100% Associat ed Counter s Uplink Resource Block Utilizing Rate = (N.PRB.UL.Used.Avg/ N.PRB.UL.Avail.Avg) x 100% Unit % Note None 1.6.3 Average CPU Load Description This KPI indicates the CPU usage during busy hours Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 31 5G RAN KPI Reference 5G RAN KPI Reference Definition The Average CPU Load KPI is defined in Table 1-16 Table 1-16 Average CPU Load Name Average CPU Load Object CPU Formul a MeanCPUUtility Associat ed Counter Average CPU Load = VS.BBUBoard.CPULoad.Mean Unit % Note None 1.7 Availability KPIs A cell is available when the gNodeB can provide EPS bearer services 1.7.1 Radio Network Unavailability Rate (CU) Description The Radio Network Unavailability Rate KPI indicates the percentage of time when cells in a radio network are unavailable This KPI is used to evaluate the deterioration of network performance caused by cell unavailability of the radio network during busy hours Definition The Radio Network Unavailability Rate KPI is defined in Table 1-17 This KPI is calculated based on the length of time all cell services are unavailable on the radio network Table 1-17 Radio Network Unavailability Rate Issue 01 (2019-06-06) Name Radio Network Unavailability Rate Object Radio network Formu la RAN_Unavail_Rate = (ΣCellUnavailTime/(TheTotalNumberOfCellsInCluster x {SP} × 60)) x 100% Associ ated Counte rs Radio Network Unavailability Rate = ((N.Cell.Unavail.Dur.System + N.Cell.Unavail.Dur.Manual)/(Number of cells x {SP} x 60)) x 100% SP indicates the reporting period for counters in minutes Copyright © Huawei Technologies Co., Ltd 32 5G RAN KPI Reference 5G RAN KPI Reference Unit % Note None 1.8 Traffic KPIs Traffic KPIs are used to measure the traffic volume in the 5G RAN The traffic KPIs are classified into downlink traffic volume, uplink traffic volume, and user number 1.8.1 Downlink Traffic Volume (DU) Description This KPI is used to evaluate the downlink traffic volume in a cell, which is measured at the Radio Link Control (RLC) layer Definition The Downlink Traffic Volume KPI is defined in Table 1-18 Table 1-18 Downlink Traffic Volume (DU) Name Downlink Traffic Volume (DU) Object Cell or radio network Formu la DLTrafficVolume Associ ated Counte rs Downlink Traffic Volume = N.ThpVol.DL Unit kbit Note None 1.8.2 Uplink Traffic Volume (DU) Definition This KPI is used to evaluate the uplink traffic volume in a cell, which is measured at the RLC layer Description The Uplink Traffic Volume KPI is defined in Table 1-19 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 33 5G RAN KPI Reference 5G RAN KPI Reference Table 1-19 Uplink Traffic Volume (DU) Name Uplink Traffic Volume (DU) Object Cell or radio network Formul a ULTraffic Volume Associat ed Counter s Uplink Traffic Volume = N.ThpVol.UL Unit kbit Note None 1.8.3 Average User Number (CU) Description This KPI indicates the average number of UEs in RRC_CONNECTED mode in a cell The gNodeB samples and records the number of UEs every second and then calculates the average value of these samples in each measurement period Definition The Average User Number KPI is defined in Table 1-20 Table 1-20 Average User Number (CU) Issue 01 (2019-06-06) Name Average User Number (CU) Object Cell or radio network Formul a AvgUserNumber Associat ed Counter s Average User Number =N.User.RRCConn.Avg Unit N/A Note None Copyright © Huawei Technologies Co., Ltd 34 5G RAN KPI Reference 5G RAN KPI Reference 1.8.4 Maximum User Number Description This KPI indicates the maximum number of UEs in RRC_CONNECTED mode in a cell The gNodeB samples and records the number of UEs every second and then calculates the maximum value of these samples in each measurement period Definition The Maximum User Number KPI is defined in Table 1-21 Table 1-21 Maximum User Number Name Maximum User Number Object Cell or radio network Formul a MaxUserNumber Associat ed Counter s Maximum User Number = N.User.RRCConn.Max Unit N/A Note None 1.9 NSA DC Accessibility and Mobility KPIs NSA DC accessibility and mobility KPIs are used to measure the success rates of SgNB addition, intra-SgNB cell change, and inter-SgNB cell change in NSA DC scenarios The KPIs are also used to measure the abnormal SgNB releases 1.9.1 SgNB Addition Success Rate Description This KPI is used to evaluate the SgNB addition success rate in NSA DC scenarios For details about SgNB addition procedures, see 3GPP TS 37.340 The number of SgNB addition attempts is measured at point A in Figure 1-23, and the number of successful SgNB additions is measured at point B in Figure 1-23 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 35 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-23 Measurement points of SgNB addition in NSA DC scenarios Definition The SgNB Addition Success Rate KPI is defined in Table 1-22 Table 1-22 SgNB Addition Success Rate Name SgNB Addition Success Rate Object Cell or radio network Formu la SgNBAdd_SR = (SgNBAdditionSuccess/SgNBAdditionAttempt) x 100% Associ ated Counte rs SgNB Addition Success Rate = (N.NsaDc.SgNB.Add.Succ/ N.NsaDc.SgNB.Add.Att) x 100% Unit % Note None 1.9.2 Intra-SgNB PSCell Change Success Rate Definition This KPI is used to evaluate the intra-SgNB cell change success rate in NSA DC scenarios For details about intra-SgNB cell change procedures, see 3GPP TS 37.340 The number of intra-SgNB cell change attempts is measured at point A in Figure 1-24, and the number of successful intra-SgNB cell changes is measured at point B in Figure 1-24 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 36 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-24 Measurement points of intra-SgNB cell change in NSA DC scenarios Description The Intra-SgNB PSCell Change Success Rate KPI is defined in Table 1-23 Table 1-23 Intra-SgNB PSCell Change Success Rate Name Intra-SgNB PSCell Change Success Rate Object Cell or radio network Formul a IntraSgNBPscellChange_SR = (IntraSgNBPscellChangeSuccess/ IntraSgNBPscellChangeAttempt) x 100% Associat ed Counter s Intra-SgNB PSCell Change Success Rate = (N.NsaDc.IntraSgNB.PSCell.Change.Succ/ N.NsaDc.IntraSgNB.PSCell.Change.Att) x 100% Unit % Note None 1.9.3 Inter-SgNB PSCell Change Success Rate Description This KPI is used to evaluate the inter-SgNB cell change success rate in NSA DC scenarios For details about inter-SgNB cell change procedures, see 3GPP TS 37.340 The number of inter-SgNB cell change attempts is measured at point A in Figure 1-25, and the number of successful inter-SgNB cell changes is measured at point B in Figure 1-25 Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 37 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-25 Measurement points of inter-SgNB cell change in NSA DC scenarios Definition The Inter-SgNB PSCell Change Success Rate KPI is defined in Table 1-24 Table 1-24 Inter-SgNB PSCell Change Success Rate Name Inter-SgNB PSCell Change Success Rate Object Cell or radio network Formul a InterSgNBPscellChange_SR = (InterSgNBPscellChangeSuccess/ InterSgNBPscellChangeAttempt) x 100% Associat ed Counter s Inter-SgNB PSCell Change Success Rate = (N.NsaDc.InterSgNB.PSCell.Change.Succ/ N.NsaDc.InterSgNB.PSCell.Change.Att) x 100% Unit % Note None 1.9.4 SgNB-Triggered SgNB Abnormal Release Rate Description This KPI is used to evaluate abnormal SgNB releases triggered by the SgNB in NSA DC scenarios For details about SgNB release procedures, see 3GPP TS 37.340 Definition The SgNB-Triggered Abnormal SgNB Release Rate KPI is defined in Table 1-25 Table 1-25 SgNB-Triggered SgNB Abnormal Release Rate Name Issue 01 (2019-06-06) SgNB-Triggered SgNB Abnormal Release Rate Copyright © Huawei Technologies Co., Ltd 38 5G RAN KPI Reference 5G RAN KPI Reference Object Cell or radio network Formul a SgNBTriSgNBAbnormalReleaseRate = (SgNBTriSgNBAbnormalRelease/ SgNBRelease) x 100% Associat ed Counter s SgNB-Triggered SgNB Abnormal Release Rate = (N.NsaDc.SgNB.AbnormRel/ N.NsaDc.SgNB.Rel) x 100% Unit % Note None 1.10 Reference Documents [1] gNodeB performance counter reference Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 39 ... Technologies Co., Ltd iii 5G RAN KPI Reference 5G RAN KPI Reference 5G RAN KPI Reference Purpose This document describes basic key performance indicators (KPIs) in the 5G RAN The KPI formulas are used... 10 5G RAN KPI Reference 5G RAN KPI Reference Figure 1-5 Measurement points for initial context setup Issue 01 (2019-06-06) Copyright © Huawei Technologies Co., Ltd 11 5G RAN KPI Reference 5G RAN. .. Technologies Co., Ltd 32 5G RAN KPI Reference 5G RAN KPI Reference Unit % Note None 1.8 Traffic KPIs Traffic KPIs are used to measure the traffic volume in the 5G RAN The traffic KPIs are classified