05_ra41335en50gla1_lte Rab and Nas Counters

LTE Counters and KPI [RL50] [RL50] RA4133-50A RAB and NAS counters Module 5 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. Nokia Solutions and Networks Academy Legal notice Intellectual Property Rights All copyrights and intellectual property rights for Nokia Solutions and Networks training documentation, product documentation and slide presentation material, all of which are forthwith known as Nokia Solutions and Networks training material, are the exclusive property of Nokia Solutions and Networks. Nokia Solutions and Networks owns the rights to copying, modification, translation, adaptation or derivatives including any improvements or developments. Nokia Solutions and Networks has the sole right to copy, distribute, amend, modify, develop, license, sublicense, sell, transfer and assign the Nokia Solutions and Networks training material. Individuals can use the Nokia Solutions and Networks training material for their own personal self-development only, those same individuals cannot subsequently pass on that same Intellectual Property to others without the prior written agreement of Nokia Solutions and Networks. The Nokia Solutions and Networks training material cannot be used outside of an agreed Nokia Solutions and Networks training session for development of groups without the prior written agreement of Nokia Solutions and Networks. 2 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. Document change history Date Version Name Change comment 3 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. Course Objectives RAB and NAS counters After completing this learning element, the participant should be able to: Describe the LTE bearer concept (E-RAB, EPS bearer, S1 and S5/S8 bearer) Explain in detail the signaling for bearer setup and the corresponding counters Discuss possibilities for investigations by using existing LTE interface S1 • Listing of release counters and their meaning • Identify Counters for QCI 4 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer • Smart Admin Control • S1 and X2 Setup • LTE Bearer Release • QCI Counters 5 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . All rights reserved. LTE Bearers 6 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. failures. releases SRB1 and SRB2 setups. for QCI1. releases. setup completions. .2.4. All rights reserved. completions. non GBR Pre emption for GBR and Non GBR Activity time for GBR and Non GBR M8007 – Radio Bearer DRB setup attempts. completions and failures 7 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. LTE Bearers Bearer counters M8006 – EPS Bearer measurement setups attempts.3.. All rights reserved. . LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • LTE Bearer Release • QCI Counters 8 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Session creation CreateSessionRensponse 9 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Attach Procedure (Positive) UE eNB MME SGW PGW HSS Random Access procedure RRCConnectionSetupComplete (EMM: Attach Request. ESM: PDN Connectivity Request) IntialUEMessage (EMM: Attach Request. ESM: PDN Connectivity Request) EIR ME identity check procedure ME identity check procedure Authentication / Security Authentication / Security Location updating CreateSessionRequest 7. All rights reserved. . ESM: Activate Default EPS Bearer Context Complete) First Uplink Data Modify Bearer Request M8000 S1 AP Measurements: eNodeB level Modify Bearer Response M8006 EPS Bearer Measurements: cell level M8007 Radio Bearer Measurements: cell level First Downlink Data 10 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Attach Procedure (Positive) UE eNB MME SGW PGW HSS •M8000C0 Initial context setup requests •M8006C0 EPS bearer setup attempts InitialContextSetupRequest (EMM: Attach Accept. ESM: Activate Default EPS Bearer Context Request ) M8007C1 Data RB setup completions RRCConnectionReconfigurationComplete M8007C11: SRB2 SETUP SUCC InitialContextSetupResponse M8000C1 Initial context setup completions M8006C1 EPS bearer setup completions ULInformationTransfer (EMM: Attach Complete. ESM: Activate Default EPS Bearer Context Complete) UplinkNASTransport (EMM: Attach Complete. . ESM: Activate Default EPS Bearer Context Request) M8007C0 Data RB setup attempts RRCConnectionReconfiguration M8007C10: SRB2 setup attempts (EMM: Attach Accept. All rights reserved. All rights reserved. . ESM: Activate Default EPS Bearer Context Request) M8007C0 Data RB setup attempts RRCConnectionReconfiguration M8007C10: SRB2 setup attempts (EMM: Attach Accept. ESM: Activate Default EPS Bearer Context Request ) M8007C1 Data RB setup completions RRCConnectionReconfigurationComplete M8007C11: SRB2 SETUP complete InitialContextSetupResponse 11 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Attach Procedure (Positive) UE eNB MME SGW PGW HSS •M8000C0 Initial context setup requests •M8006C0 EPS bearer setup attempts InitialContextSetupRequest (EMM: Attach Accept. All rights reserved. NAS Service Request (Negative) UE eNB MME SGW PGW HSS InitialContextSetupFailure M8000C9 M8000C8 S1 setup failure indicated by MME S1 setup failure. . no response from MME 12 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . NAS Service Request (Negative) UE eNB MME SGW PGW HSS InitialContextSetupRequest RRCConnectionReconfiguration Setup DRB TS1Relocexec/Tx2Relocexec expires RRCConnectionReconfigurationComplete M8007C2 Data bearer setup failure 13 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. All rights reserved. NAS Service Request (Negative) UE eNB MME SGW PGW HSS InitialContextSetupRequest RRCConnectionReconfiguration RRCConnectionReconfigurationComplete InitialContextSetupResponse (with failure cause) M8006C2/C3/C4/C5 M8000C2/C3/C4/C5 EPS bearer setup failure due to Initial context setup failure due to • Radio network layer • Radio network layer • Transport layer • Transport layer • Resource reasons • Resource reasons • Other reasons • Other reasons 14 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. Data Radio Bearer Setup Counter Summary M8007C2  M8007C0 M8007C1  Data bearer setup Data bearer setup attempts failures / completions 15 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. . NAS Bearer Setup Counter Summary  failures due to M8000C2 Radio Network Layer M8006C2 M8000C0 failures due to M8006C0 M8000C1 M8007C1  M8000C3 M8006C3 Transport Layer M8000C4 failures due to M8006C4 Resource reasons Initial context & Initial context & EPS bearer EPS bearer setup setup failures / completions M8000C5 failures due to attempts M8006C5 Other reasons 16 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. DRB Setup KPIs LTE_5003a E-UTRAN Data Radio Bearer Setup Success Ratio Shows the setup success ratio for the data radio bearer setup procedure The elementary procedure "RRC connection reconfiguration" is used in this context to setup a user plane (data) radio bearer Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) DRB SSR = (DRB setup 100 * sum ([M8007C1]) / 100 * sum ([DATA_RB_STP_COMP]) / sum successes / DRB setup sum ([M8007C0]) ([DATA_RB_STP_ATT]) attempts) * 100% 17 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) RB SR= 100 . . DRB Setup KPIs LTE_5117a E-UTRAN Radio Bearer Success Ratio The KPI shows the Radio Bearer Success Ratio given as 100% .Radio Bearer Drop Ratio. All rights reserved. RB SR= 100 .RB DR RB SR= 100 .LTE_5004 (100*sum([M8007C5])+ ([M8007C6]) / sum([M8007C3]+ ([M8007C4]+ [M8007C5]+ [M8007C13]+ [M8007C6])) 18 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. 06.06.2011 LTE_5116a Data Radio Bearer Attempts (#) LTE_5117a Data Radio Bearer Success Ratio (%) LTE_5003a Data Radio Bearer Setup Success Ratio (%) 19 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.06.05. Data Radio Bearer Setup KPIs 12.2011 13.2011 06.000 90.00 2.00 6.2011 29.00 8.2011 15.05.05.2011 17.06.2011 31. All rights reserved.05.2011 27.06.2011 19.06.000 50.00 0 23.2011 11.06.2011 02.000 70.000 60.06.06.05.2011 09. .2011 21.2011 25.000 80.00 4.000 100.00 10.06.2011 04. . sum ([M8006C0]) sum ([EPS_BEARER_SETUP_ATTEMPTS]) RAB setup attempts) * 100 % 20 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. not the whole end-to-end service accessibility. E-RAB Setup KPIs LTE_5017a E-UTRAN E-RAB Setup Success Ratio Describes the setup success ratio of the elementary E-RAB setup procedure used to setup the E-RAB between MME and UE It indicates the E-UTRAN contribution to network accessibility for the end user. Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB SSR = (E-RAB 100 * sum ([M8006C1]) / 100 * sum ([EPS_BEARER_SETUP_COMPLETIONS]) / setup successes / E. All rights reserved.000 80.00 10.00 2.06.00 6.2011 27.000 50.000 60.00 8.06.00 4.06.2011 13.2011 06.2011 29.05.2011 21.000 100.2011 04.05.06.2011 LTE_5118a E-RAB Setup Attempts (#) LTE_5024a E-RAB Normal Release Ratio RAN View (%) LTE_5017a E RAB Setup Success Ratio (%) LTE_5023a E-RAB Normal Release Ratio User Perspective (%) 21 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.06.2011 17.2011 31.06.00 0 23.06. .E-RAB Setup KPIs 12.05.000 70.2011 02.2011 11.2011 25.2011 09.06.2011 19.000 90.05.06.05.06.2011 15. QCI1 The KPI describes the setup success ratio of the elementary E-RAB setup procedure used to setup the E-RAB between MME and UE for QCI1 DRBs. . not the whole end-to-end service accessibility. [M8006C44]) / [EPS_BEAR_SET_COM_ADDIT_QCI1]) / RAB setup attempts sum([M8006C17] + sum([EPS_BEARER_STP_ATT_INI_QCI_1] + QCI1)*100% [M8006C26]) [EPS_BEARER_STP_ATT_ADD_QCI_1]) 22 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB SSR QCI1=(E-RAB 100*sum([M8006C35] + 100*sum([EPS_BEARER_STP_COM_INI_QCI1] + setup successes QCI1 / E. It indicates the E-UTRAN contribution to network accessibility for the end-user. All rights reserved.E-RAB Setup KPIs LTE_5204a E-UTRAN E-RAB Setup Success Ratio. QCI2 The KPI describes the setup success ratio of the elementary E-RAB setup procedure used to setup the E-RAB between MME and UE for QCI2 DRBs. In a similar manner LTE_5554a and LTE_5555a calculate success ratio for QCI 3 and 4 respectively Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB SSR QCI2=(E-RAB 100*sum([M8006C168] + 100*sum([EPS_BEARER_STP_COM_INI_QCI_2] + setup successes QCI2 / E. E-RAB Setup KPIs LTE_5553a E-UTRAN E-RAB Setup Success Ratio. All rights reserved. [M8006C171]) / [EPS_BEAR_SET_COM_ADD_QCI_2]) / RAB setup attempts sum([M8006C162] + sum([EPS_BEARER_STP_ATT_INI_QCI_2] + QCI2)*100% [M8006C165]) [EPS_BEARER_STP_ATT_ADD_QCI_2]) 23 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . It indicates the E-UTRAN contribution to network accessibility for the end-user. not the whole end-to-end service accessibility. ([M8006C169] + ([EPS_BEARER_STP_COM_INI_QCI_3] + [EPS_BEAR_SET_COM_ADD_QCI_3]) - [M8006C173])) / sum([M8006C0] . non . [EPS_BEARER_STP_ATT_ADD_QCI_1]) -([EPS_BEARER_STP_ATT_INI_QCI_2] + ([M8006C163] + [M8006C166]) . sum([EPS_BEARER_SETUP_ATTEMPTS] . Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB SSR non GBR=(E-RAB setup 100*sum(([M8006C1] .([EPS_BEARER_STP_ATT_INI_QCI_1] + ([M8006C162] + [M8006C165]) . ([EPS_BEARER_STP_COM_INI_QCI_4] + [EPS_BEAR_SET_COM_ADD_QCI_4])) / ([M8006C17] + [M8006C26]) . .GBR The KPI describes the setup success ratio of the elementary E-RAB setup procedure used to setup the E-RAB between MME and UE for non GBR services.([M8006C169] + ([EPS_BEARER_STP_COM_INI_QCI_2] + [EPS_BEAR_SET_COM_ADD_QCI_2]) - [M8006C172]) . [EPS_BEARER_STP_ATT_ADD_QCI_2]) -([EPS_BEARER_STP_ATT_INI_QCI_3] + ([M8006C164] + [M8006C167]))) [EPS_BEARER_STP_ATT_ADD_QCI_3]) -([EPS_BEARER_STP_ATT_INI_QCI_4] + [EPS_BEARER_STP_ATT_ADD_QCI_4])) 24 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved.([M8006C35] + 100*sum(EPS_BEARER_SETUP_COMPLETIONS] - successes non GBR / E-RAB setup [M8006C44]) -([M8006C168] + ([EPS_BEARER_STP_COM_INI_QCI1] +[EPS_BEAR_SET_COM_ADD_QCI1]) - attempts non GBR)*100% [M8006C171]) . E-RAB Setup KPIs LTE_5217b E-UTRAN E-RAB Setup Success Ratio. It indicates the E-UTRAN contribution to network accessibility for the end-user. not the whole end-to-end service accessibility. 11.2010 31.2010 28.2010 06.2010 01.2010 04. All rights reserved.10.10.11.2010 05.2010 03.2010 02.11.10.2010 25.10.2010 22.10.10.2010 24.2010 LTE 800 20 days report 25 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . NAS Bearer Setup KPIs Call Setup Success Ratio = RRC setup success ratio * RAB setup success ratio (like for WCDMA) CSSR (Call Setup Success Rate) eRAB Setup Attempts CSSR [%] 1400 100 90 1200 80 1000 70 800 60 50 % 600 40 400 30 20 200 10 0 0 18.2010 29.2010 26.10.2010 21.2010 20.11.10.10.11.10.2010 23.2010 19.10.11.10.10.2010 27.2010 30.10. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • LTE Bearer Release • QCI Counters 26 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . Lower availability services may be offered without jeopardizing higher available services .‘Must’ availability services like emergency sessions need no dedicated (reserved) resource • Dynamic adaptation of resources to actual need ARP = Allocation and retention/maintenance Priority 27 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. and the system corrects overbooking situations using preemption according Based on number of RRC to priorities (Radio) connections and number of active users per cell w/s allocation and .ARP based admission Control retention priority (ARP) • Prioritize the availability of different services . Smart Admin Control and ARP RL40 . . All rights reserved.Smart Admission Control Service management High RB requests with congestion • Necessity when offering high bit rate services control by using of priority and • Configuration of access control threshold per cell smart admissions simplified for GBR traffic Rejected UE requests due of too S-RAC high RB utilization • RAC reacts on measurements and therefore is  Only for QCI 2-4 Descriptions / Objective: adapted in a dynamic way  Not for VoIP To admit or to reject the requests • Congestion control function allows more optimistic for establishment of Radio Bearers (RB) on a cell basis admission decisions. 3. without partial admission) 28 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.S-RAC predicts load required/caused by each new GBR radio bearer • Reflecting requested transmission rates in UL/DL under given radio conditions • Considering existing GBR load . Smart Admission Control (RL40) .S-RAC only for GBR traffic to avoid congestion on ‘guaranteed’ resources . . All rights reserved. • Radio conditions of high bit rate users getting worse • Too optimistic admission was done • Bursting traffic cannot be served over time.g.Adaptation of Transport Admission Control various bit rates of QCI 2.Counter based RAC will not work in case of serving high bit rate users  Replaced by a measurement based function .4 bearers (without congestion handling.S-RAC offers congestion handling when overbooking of resources is detected e. . • Insufficient resources available – Other E-RABs may be preempted to steal their resources or – Request is rejected • Controlled by an ARP parameter – Mandatory part of any E-RAB requested by EPC M8006C174 Pre-empted GBR bearers M8006C175 Pre-empted non-GBR bearers M8013C28 Pre-empted UE contexts due to pre-emption of last non-GBR bearer 29 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. ARP Counters (RL40) • ARP concept • Each time an E-RAB needs to be established – some bearer combination. All rights reserved. . – radio resources – transport resources are required. All rights reserved. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • LTE Bearer Release • QCI Counters 30 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. eNB name. S1 Setup Procedure eNB MME M8000C6: S1 Setup attempt S1AP: S1 SETUP REQUEST eNB global ID. Relative MME capacity SCTP: SACK GUMMEI: Globally Unique MME Identity TA: Tracking Area DRX: Discontinue Reception 31 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . supported TAs and Paging DRX configuration SCTP: SACK M8000C7: S1 Setup complete S1AP: S1 SETUP RESPONSE ServedGUMMEI. .S1 Setup Counter Summary  M8000C8 M8000C6 M8000C7  M8000C9 S1 setup attempts S1 setup failures / completions 32 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. .S1 Setup KPIs LTE_5014a E-UTRAN S1 Setup Success Ratio Shows the setup success ratio for the elementary procedure "S1 Setup“ When this procedure is finished S1 interface is operational and other S1 messages can be exchanged Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) S1 SSR = (S1 setup 100 * sum([M8000C7]) / 100 * sum ([S1_SETUP_SUCC]) / sum successes / S1 setup sum ([M8000C6]) ([S1_SETUP_ATT]) attempts) * 100% 33 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . S1 initial context Setup Procedure eNB MME M8000C0: Initial context Setup requests S1AP: S1 INITIAL CONTEXT SETUP REQUEST SCTP: SACK M8000C1: Initial Context Setup completions S1AP: S1 INITIAL CONTEXT SETUP RESPONSE SCTP: SACK 34 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. All rights reserved. .Context Setup KPIs LTE_5009a Initial Context Setup Success Ratio Shows the setup success ratio for the elementary procedure "Initial Context Setup". used to setup initial UE context in MME (UE associated logical S1 connection) Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) S1 init Cont SSR = 100 * sum ([M8000C1]) / 100 * sum ([INI_CONT_STP_COMP]) / sum (initial context setup sum ([M8000C0]) ([INI_CONT_STP_REQ]) successes / initial context setup attempts) * 100% 35 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • LTE Bearer Release • QCI Counters 36 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . LTE X2AP (8022) RL30 It provides measurements related to X2 Setup procedure. . The counters are updated at the originating eNB site eNB1 X2 Setup Procedure: Positive eNB2 M8022C0: X2 setup attempt X2AP: X2 SETUP REQUEST X2AP: X2 SETUP RESPONSE 37 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. LTE X2AP (8022) It provides measurements related to X2 Setup procedure. All rights reserved. . The counters are updated at the originating eNB site eNB1 X2 Setup Procedure: Negative eNB2 M8022C0: X2 setup attempt X2AP: X2 SETUP REQUEST X2AP: X2 SETUP FAILURE M8022C1: X2 setup failure message or expiration of Timer (wait for X2 SETUP RESPONSE) 3GPP TS 36.423 38 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • LTE Bearer Release • QCI Counters 39 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . All rights reserved. ECM -IDLE remove UE context Transition due to inactivity InactivityTimer UE consumes less battery power in idle mode LNCEL. . 10.65535 s. 30s Less active UEs which network has to handle Fast going to inactivity has drawback of longer connection setup time (more transitions idle to connected) 40 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. eNodeB Initiated Transition to ECM Idle UE eNB MME S -GW UE in Detect user inactivity RRC -CONNECTED or other eNB trigger S 1 AP : UE Context Release Request S1 AP : UE Context Release Command S 11 interaction to inform S.GW RRC : RRC Connection Release S 1 AP : UE Context Release Complete about connection release L2 ACK Set UE to Release all UE related Set UE to RRC ..IDLE resources. eNodeB Initiated Transition to ECM Idle (Positive) ECM_CONNECTED eNB MME eNodeB initiated EPS bearer release M8006C10 normal release (UE inactivity) M8006C15 radio network layer inter-RAT redirection S1AP: UEContextReleaseRequest With cause eNodeB initiated transition to ECM idle M8013C13 normal release S1AP: UEContextReleaseCommand With cause S1AP: UEContextReleaseComplete ECM_IDLE M8006 EPS Bearer Measurements: cell level Radio bearer release M8007 Radio Bearer Measurements: cell level M8007C3 normal release M8013 UE State Measurements: cell level 41 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. All rights reserved. EPC Initiated Transition to ECM Idle(Positive) ECM_CONNECTED eNB MME S1AP: UEContextReleaseRequest With cause EPC initiated EPS bearer release M8006C6 normal release (UE initiated) M8006C7 detach (UE or MME initiated) S1AP: UEContextReleaseCommand With cause EPC initiated transition to ECM idle M8013C9 normal release (UE initiated) S1AP: UEContextReleaseComplete M8013C10 detach (UE or MME initiated) ECM_IDLE M8006 EPS Bearer Measurements: cell level Radio bearer release M8007 Radio Bearer Measurements: cell level M8007C4 detach M8013 UE State Measurements: cell level 42 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . . All rights reserved. Transition to ECM Idle (Negative) ECM_CONNECTED eNodeB initiated EPS bearer release eNB MME M8006C12 radio link failure M8006C14 transport network unavailable M8006C13 other failure S1AP: UEContextReleaseRequest With cause eNodeB initiated transition to ECM idle S1AP: UEContextReleaseCommand M8013C15 radio link failure With cause M8013C16 other failure S1AP: UEContextReleaseComplete Radio bearer release M8007C5 radio link failure ECM_IDLE M8007C6 other failure 43 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. Transition to ECM Idle (Negative) ECM_CONNECTED eNB MME EPC initiated EPS bearer release M8006C8 radio network layer cause M8006C9 other cause S1AP: UEContextReleaseCommand With cause EPC initiated transition to ECM idle M8013C11 radio network layer cause M8013C12 other cause S1AP: UEContextReleaseComplete Radio bearer release ECM_IDLE M8007C5 radio network layer cause M8007C6 other cause 44 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. . All rights reserved. LTE Bearer Release Counter Summary eNodeB initiated eNodeB initiated M8013C15/C16 M8006C12/C13/C14 M8007C5/C6  EPC initiated EPC initiated M8006C8/C9 M8013C11/C12 eNodeB initiated eNodeB initiated M8013C13 M8006C10/C15 EPC initiated EPC initiated M8007C3/C4  M8013C9/C10 M8006C6/C7 Transitions to ECM idle EPS bearer releases Radio bearer releases Always triggers EPS Always triggers radio bearer release bearer release 45 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. user perspective Describes the ratio of normally released E-RABs from user perspective Corresponding to a connection completion ratio Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB NRR UP = (normal E. LTE Bearer Release KPIs LTE_5023d E-RAB Normal Release Ratio. . 100*sum([M8006C6]+ 100*sum([EPC_EPS_BEARER_REL_REQ_NORM]+ RAB releases user [M8006C7]+ [M8006C15] + [EPC_EPS_BEARER_REL_REQ_DETACH]+ perspective / all E-RAB M8006C10] + [M8006C174] + [ENB_EPS_BEAR_REL_REQ_RNL_REDIR] + releases) * 100% [M8006C175]) / [ENB_EPS_BEARER_REL_REQ_NORM] + sum([M8006C6] + [M8006C7] [PRE_EMPT_GBR_BEARER] + + [M8006C8] + [M8006C9] + [PRE_EMPT_NON_GBR_BEARER]) / [M8006C15] + [M8006C10] + sum([EPC_EPS_BEARER_REL_REQ_NORM]+ [M8006C12] +[M8006C14] + [EPC_EPS_BEARER_REL_REQ_DETACH]+ [M8006C13] + [M8006C174] + [EPC_EPS_BEARER_REL_REQ_RNL]+ [M8006C175]) [EPC_EPS_BEARER_REL_REQ_OTH] + [ENB_EPSBEAR_REL_REQ_RNL_REDIR]+ [ENB_EPS_BEARER_REL_REQ_NORM] + [ENB_EPS_BEARER_REL_REQ_RNL]+ Now at RL40 includes [ENB_EPS_BEARER_REL_REQ_TNL] + Pre-empted bearer [PRE_EMPT_GBR_BEARER] + release in numerator [PRE_EMPT_NON_GBR_BEARER]) and denominator 46 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. All rights reserved. . Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB NRR UP = (normal E. LTE Bearer Release KPIs Also .Normal release for QCI1 LTE_5209a LTE_5024d E-RAB Normal Release Ratio. 100*sum([M8006C10]+ 100*sum([ENB_EPS_BEARER_REL_REQ_NORM] + RAB releases RAN [M8006C15] + [M8006C6]+ ENB_EPS_BEARER_REL_REQ_RNL_REDIR]+ perspective / all E-RAB [M8006C7 ]+ [M8006C8]+ [EPC_EPS_BEARER_REL_REQ_NORM]+ releases) * 100% [M8006C9] + [M8006C174] + [EPC_EPS_BEARER_REL_REQ_DETACH]+ [M8006C175]) / [EPC_EPS_BEARER_REL_REQ_RNL]+ sum([M8006C6] + [EPC_EPS_BEARER_REL_REQ_OTH] + [M8006C7] + [M8006C8] + [PRE_EMPT_GBR_BEARER] + [M8006C9] + [M8006C15 ]+ [PRE_EMPT_NON_GBR_BEARER]) / [M8006C10] + [M8006C12] + sum([EPC_EPS_BEARER_REL_REQ_NORM]+ [M8006C14] + [M8006C13] + [EPC_EPS_BEARER_REL_REQ_DETACH]+ [M8006C174] + [EPC_EPS_BEARER_REL_REQ_RNL]+ [M8006C175]) [EPC_EPS_BEARER_REL_REQ_OTH] + [ENB_EPSBEAR_REL_REQ_RNL_REDIR]+ [ENB_EPS_BEARER_REL_REQ_NORM] + Now at RL40 includes [ENB_EPS_BEARER_REL_REQ_RNL]+ Pre-empted bearer [ENB_EPS_BEARER_REL_REQ_TNL] + release in numerator [ENB_EPS_BEARER_REL_REQ_OTH]+ [PRE_EMPT_GBR_BEARER] + and denominator [PRE_EMPT_NON_GBR_BEARER]) 47 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. RAN perspective Describes the ratio of normally released E-RABs from RAN perspective M80006C8/9 are included in RAN perspective. User View view but not in RAN view Describes the ratio of abnormally released (dropped) E-RABs from user point of view Each bearer of the "Bearer to be Released List" IE is counted User point of view means that as abnormal E-RAB drops both those ones initiated by eNB and EPC are counted Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB DR = (abnormal E. user [M8006C9] + [M8006C12] + [EPC_EPS_BEARER_REL_REQ_OTH] perspective / all E-RAB [M8006C14] + +[ENB_EPS_BEARER_REL_REQ_RNL] releases) * 100% [M8006C13]) /sum +[ENB_EPS_BEARER_REL_REQ_TNL]+ ([M8006C6] + [M8006C7] + [ENB_EPS_BEARER_REL_REQ_OTH] ]) /sum [M8006C8] + [M8006C9] + ([EPC_EPS_BEARER_REL_REQ_NORM]+ [M8006C15]+ [M8006C10] [EPC_EPS_BEARER_REL_REQ_DETACH]+ + [M8006C12] + [EPC_EPS_BEARER_REL_REQ_RNL]+ [M8006C14] + [M8006C13] [EPC_EPS_BEARER_REL_REQ_OTH] + [M8006C174] + +[ENB_EPSBEAR_REL_REQ_RNL_REDIR]+ [M8006C175]) [ENB_EPS_BEARER_REL_REQ_NORM] +[ENB_EPS_BEARER_REL_REQ_RNL]+ [ENB_EPS_BEARER_REL_REQ_TNL] +[ENB_EPS_BEARER_REL_REQ_OTH]+ [PRE_EMPT_GBR_BEARER] + [PRE_EMPT_NON_GBR_BEARER]) Now at RL40 includes Pre-empted bearer release in denominator 48 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. 100*sum ([M8006C8]+ 100*sum([EPC_EPS_BEARER_REL_REQ_RNL]+ RAB release requests. LTE Bearer Release KPIs M8006C8/9 inlcuded in user drop LTE_5119c E-RAB Drop Ratio. 100*sum([M8006C12]+ 100*sum([ENB_EPS_BEARER_REL_REQ_RNL] RAB releases from RAN [M8006C14]+ +[ENB_EPS_BEARER_REL_REQ_TNL]+ point of view / all E-RAB [M8006C13])/sum [ENB_EPS_BEARER_REL_REQ_OTH])/sum releases) * 100% ([M8006C6]+ [M8006C7]+ ([EPC_EPS_BEARER_REL_REQ_NORM]+ [M8006C8]+ [M8006C9] + [EPC_EPS_BEARER_REL_REQ_DETACH]+ [M8006C15]+ [M8006C10]+ [EPC_EPS_BEARER_REL_REQ_RNL] [M8006C12] + +[EPC_EPS_BEARER_REL_REQ_OTH] + [M8006C14]+ [M8006C13]+ [ENB_EPSBEAR_REL_REQ_RNL_REDIR] [M8006C174] + +[ENB_EPS_BEARER_REL_REQ_NORM] [M8006C175]) +[ENB_EPS_BEARER_REL_REQ_RNL]+ [ENB_EPS_BEARER_REL_REQ_TNL]+ [ENB_EPS_BEARER_REL_REQ_OTH]+ Now at RL40 includes [PRE_EMPT_GBR_BEARER] + [PRE_EMPT_NON_GBR_BEARER]) Pre-empted bearer release in denominator 49 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. RAN View Describes the ratio of abnormally released (dropped) E-RABs from RAN point of view Each bearer of the "Bearer to be Released List" IE is counted RAN point of view means that as abnormal E-RAB drops only those ones initiated by eNB are counted Summarization Logical formula formula (PI ID) Summarization formula (Abbreviation) E-RAB DR = (abnormal E. All rights reserved. . LTE Bearer Release KPIs Also – Drop ratio for QCI1 RAN view LTE_5572a LTE_5025d E-RAB Drop Ratio. 10. .2010 23.2010 04.11.2010 LTE 800 20 days report 50 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.2010 01.2010 30.2010 25.2010 28.10.2010 29.2010 26.10.2010 31.2010 24.11.2010 19.2010 05.11.2010 20.10.2010 21.11. LTE Bearer Release KPIs eRAB Drop Rate eRAB Drops Bearer (E-RAB) Drop Rate [%] 800 100 700 600 80 500 60 400 % 300 40 200 20 100 0 0 18.10.2010 03.10.10.11.2010 27.2010 02.10.11.10.2010 06.10.10.2010 22.10.10. All rights reserved.10. All rights reserved. . LTE Bearer Release KPIs LTE 800 24 hour report 51 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. LTE RAB and NAS Counters • LTE Bearer Concept • Bearer Setup • Smart Admin Control • S1 Setup • X2 Setup • QCI counters 52 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. . All rights reserved. 151. 142. 142.2. All rights reserved. 133  Counter Group 1 • Silver users: QCI: 140. 131. 143  Counter Group 2 • Gold users: QCI: 150. RAN sharing (operators share eNodeB) to define a set of QCIs dedicated for each operator: • Operator A: QCI: 140. 141. Better user and service differentiation for non-GBR services for one operator: • Bronze users: QCI: 130. 1. Operator Specific QCI (RL30) • In RL30 – up to 21 additional QCIs are defined • Only for non-GBR bearers • QCI range is 128…254 counterGroup The counter group to which • For each QCI an additional counterGroup is defined the QCI belongs • Examples of Counter Groups for the typical use cases: LNBTS. 161. . 153  Counter Group 3 . 162. - • 1.6. 141. 152.. 163  Counter Group 2 53 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.1. 143  Counter Group 1 • Operator B: QCI: 160. 132. 5 PDCP SDU data volume on eUu Interface UL for UEs assigned to QCI Counter Group 1.11 PDCP SDU data volume on eUu Interface DL for UEs assigned to QCI Counter Group 1.6 M8023C21.26 Average number of active UEs of QCI Counter Group 1..6 M8023C6 ..... . M8023C0.6 54 RA41335EN50GLA1 ©2014 Nokia Solutions and Networks.. All rights reserved. LTE UE and Service Differentiation (8023) RL30 LTE UE and Service Differentiation (M8023) measures Operator specific UE and Service Differentiation items. All rights reserved.Thank You ! RA41335EN50GLA1 ©2014 Nokia Solutions and Networks. .