1、,WCDMA UTRAN KPI,Introduction,KPI definition Key performance indicator KPI entity RNC level Cell level Clutter/region level (customized) KPI analysis Network performance surveillance Trouble shooting network problems Network trend analysis,UTRAN KPI Overview,The UTRAN KPI can be divided into 5 catal
2、ogs Accessibility：UTRAN Call Setup Retainability：UTRAN Call Drop Mobility：UTRAN Mobility Management Traffic：Resource and Traffic management Algorithm： Radio Resource Management Algorithm Management,Contents,UTRAN Call Setup UTRAN Call Drop UTRAN Mobility Management Traffic Management Algorithm Manag
3、ement,UTRAN Call Setup,UTRAN Call Setup includes the RRC connection setup and the RAB establish procedure. The Successful call setup involves the success RRC and RAB setup. The main indicators are RRC Setup Success Rate RAB Setup Success Rate,RRC Setup Counter,Measurement Point Stat. Number of RRC C
4、onnection Request in Point A1 of Figure1 Stat. Number of RRC Connection Setup in Point B of Figure1 Stat. Number of RRC Connection Setup complete in Point C of Figure1 Stat. Number of RRC Connection Reject in point A of Figure2,F1:successful RRC connection setup procedure F2: RRC connection reject p
5、rocedure,RRC Setup Counter,RRC Setup KPI RRC Connection Setup Success Rate = RRC Connection Setup complete / RRC Connection Request Main counter RRC Connection Request RRC Connection Setup RRC Connection Reject RRC Connection Setup complete,RRC Setup Counter,Request cause counter Originating convers
6、ational call Terminating conversational call Inter-RAT cell re-selection Inter-RAT cell change order Registration Failure cause counter RRC Reject RRC setup no response,RAB Setup Counter,Measurement Point Stat. Number of RAB Setup Request in Point A of Figure1 Stat. Number of RAB Setup Success in Po
7、int B of Figure1 Stat. Number of RAB Setup Failure in Point B of Figure2,F1: Successful RAB setup procedure F2: RAB setup failure procedure,RAB Setup Counter,RAB Setup KPI CS RAB Success rate = CS RAB Setup Success/CS RAB Setup Request PS RAB Success rate = PS RAB Setup Success/CS RAB Setup Request
8、Overall counter CS RAB Setup Request CS RAB Setup Success CS RAB Setup Failure PS RAB Setup Request PS RAB Setup Success PS RAB Setup Failure Traffic class based counter Conversational Streaming Interactive Background,RAB setup counter,Typical bearer based counter AMR speech CS64kbps PS64kbps PS128k
9、bps PS384kbps Failure cause counter Invalid parameters Unavailable Transport Layer failure Other cause,Contents,UTRAN Call Setup UTRAN Call Drop UTRAN Mobility Management Traffic Management Algorithm Management,Call Drop Counter,Measurement Point Stat. Number of Call Drop in Point A of Figure1 and i
10、n Point A of Figure2 Definition of Call Drop : Abnormal RAB release triggered by RNC,F1: RAB release request procedure F2: Iu connection release request procedure,Call Drop Counter,Call Drop KPI AMR Call Drop Rate = AMR Call Drop / AMR RAB Setup Success VP Call Drop Rate = VP Call Drop / VP RAB Setu
11、p Success PS Call Drop Rate = PS Call Drop / PS RAB Setup Success Overall counter CS call drop PS call drop Traffic class based counter Conversational Streaming Interactive Background,Call Drop Counter,Typical bearer based counter AMR speech CS64kbps PS64Kbps PS128Kbps PS384Kbps Call drop cause coun
12、ter RF loss RLC reset AAL2 failure GTPU loss Other cause,Contents,UTRAN Call Setup UTRAN Call Drop UTRAN Mobility Management Traffic Management Algorithm Management,UTRAN Mobile Management,The UTRAN Mobile Management focus on the KPIs of the handover procedures. Soft handover Hard handover InterRAT
13、handover InterRAT cell change order Cell update,SHO counter,Measurement Point Stat. Number of SHO request in Point B of Figure1 Stat. Number of SHO success in Point C of Figure1 Stat. Number of SHO failure in Point C of Figure2 and in Point C of Figure3,F1: Successful SHO procedure F2: SHO failure p
14、rocedure (activeset update failure) F3:SHO failure procedure (time out),SHO counter,Soft handover KPI Soft HO Success rate=Soft HO success / Soft HO request Softer HO Success rate=Softer HO success / Softer HO request Overall counter Soft HO request Soft HO success Softer HO request Softer HO succes
15、s Typical Service based counter AMR speech CS64kbps PS64kbps PS128kbps PS384kbps,SHO counter,Failure cause counter configuration unsupported incompatible simultaneous reconfiguration invalid configuration No response Other cause SHO factor counter (1 radio link, 2 radio links, 3 radio links) active
16、set SHO factor (based on radio link) = active set average link number -1 SHO factor (based on UE) = (2 radio links active set + 3 radio links active set) / (1 radio links active set + 2 radio links active set + 3 radio links active set),HHO counter,Measurement Point Stat. Number of HHO request in Po
17、int B of Figure1 Stat. Number of HHO success in Point C of Figure1 Stat. Number of HHO failure in Point A of Figure2 and in Point A of Figure3,F1: Successful HHO procedure F2: HHO failure (physical channel configuration failure) F3:HHO failure (time out),HHO counter,HHO KPI Intra-frequency HHO Succe
18、ss rate = Intra-frequency HHO success / Intra-frequency HHO request Inter-frequency HHO Success rate = Inter-frequency HHO success / Inter-frequency HHO request Overall counter Intra-frequency HHO request Intra-frequency HHO success Intra-frequency HHO failure Inter-frequency HHO request Inter-frequ
19、ency HHO success Inter-frequency HHO failure,HHO counter,Typical Service based counter AMR speech CS64kbps PS64kbps PS128kbps PS384kbps Failure cause counter Configuration unsupported Physical channel failure Incompatible simultaneous reconfiguration Cell update occurred Invalid configuration No res
20、ponse Other cause,Inter-RAT Handover out counter,Measurement Point Stat. Number of Handover outgoing prepare in Point A Stat. Number of Handover outgoing prepare success in Point B Stat. Number of Handover outgoing attempt in Point C Stat. Number of Handover outgoing success in Point D,F1: Successfu
21、l inter-RAT HO outgoing procedure,Inter-RAT handover out counter,Inter-RAT handover KPI Inter-RAT handover out prepare success rate = Handover outgoing prepare success/Handover outgoing prepare Handover outgoing success rate = Handover outgoing success/Handover outgoing attempt Overall counter Hando
22、ver outgoing prepare Handover outgoing prepare success Handover outgoing attempt Handover outgoing success,Inter-RAT handover out counter,Failure cause counter Prepare failure Relocation Failure in Target CN/RNC or Target System TRELOCalloc Expiry Relocation not supported in Target RNC or Target sys
23、tem No Resource Available Unknown Target RNC No response Handover failure Configuration Unsupported Physical Channel Failure Unspecified Relocation abort No response Other cause,Inter-RAT handover in counter,Measurement Point Stat. Number of Handover incoming request in Point A Stat. Number of Hando
24、ver incoming prepare success in Point B Stat. Number of Handover incoming success in Point C,F1: Successful inter-RAT HO incoming procedure,Inter-RAT handover in counter,Inter-RAT handover in KPI Handover in prepare success rate = Handover incoming prepare success/Handover incoming request Handover
25、in success rate = Handover incoming success/Handover incoming request Overall counter Handover incoming request Handover incoming prepare success Handover incoming success,Inter-RAT handover in counter,Failure cause Prepare failure No Resource Available Relocation Failure in Target CN/RNC or Target
26、System Relocation not supported in Target RNC or Target system Relocation abort Other cause Handover failure Relocation abort No response Other cause,Inter-RAT cell change counter,Measurement Point Stat. Number of cell change outgoing request in Point B of Figure1 and Point A of Figure2 Stat. Number
27、 of cell change outgoing success in Point D of Figure1 and Point B of Figure2,F1: UTRAN-controlled cell change outgoing procedure F2: UE-controlled cell change outgoing procedure,Inter-RAT cell change counter,Inter-RAT cell change KPI Success rate = Cell change success / Cell change outgoing request
28、 Overall counter Cell change outgoing request Cell change outgoing success Typical bearer based counter PS64kbps PS128kbps PS384kbps Failure cause counter Configuration unacceptable Physical Channel Failure Unspecified No response Other,Cell update counter,Measurement Point Stat. Number of cell upda
29、te request in Point A Stat. Number of cell update success in Point B in case1 or case2 Stat. Number of cell update success in Point C in case3 Case1:the UE camps on the same cells and keeps in CELL_PCH state before and after cell update Case2:the UE camps on the same cells and keeps in CELL_FACH sta
30、te before and after cell update, also the update cause is not cell reselection Case3: all cases except case1 and case2,F1: cell update procedure,Cell update counter,Cell update KPI Cell update success rate = Cell update success/Cell update request Overall Counter Cell update request Cell update succ
31、ess Cell update cause counter Cell reselection Periodical cell update Uplink data transmission Paging response Re-entered service area Radio link failure RLC unrecoverable error,Contents,UTRAN Call Setup UTRAN Call Drop UTRAN Mobility Management Traffic Management Algorithm Management,Traffic Counte
32、r,User number RRC state based user number Cell DCH, Cell FACH, Cell PCH, URA PCH Traffic class based equivalent user Conversational Streaming Interactive and background Cell throughput Directional counter Cell uplink throughput Cell downlink throughput Traffic class based counter Conversational, str
33、eaming, interactive, background All supported bandwidth,Traffic Counter,Iub bandwidth utilization Common channel (RACH, FACH, PCH) volume Traffic class based service volume Uplink and downlink volume OVSF code utilization SF based SF=4 SF=8 SF=512 RTWP and Carrier Power Cell RTWP Transmission Carrie
34、r Power,Contents,UTRAN Call Setup UTRAN Call Drop UTRAN Mobility Management Traffic Management Algorithm Management,Algorithm Counter,DCCC Overall counter Channel switch request Channel switch success DCHDCH channel switch counter Channel switch success (DL Bit Rate upgrade ) Channel switch success
35、(DL Bit Rate degrade ) DCHFACH/RACH channel switch counter Channel switch success (To common channel) Channel switch success (From common channel) AMRC Uplink AMR control counter (degrade) Downlink AMR control counter (upgrade) CAC UL Admission deny counter DL Admission deny counter,Appendix: Nastar
36、 KPI Analysis Routine,Define monitor area: RNC group or cell group,Query Performance Item,Query Top N cell list,Query related item,Import raw data,Define cluster,Select Issue,Find out trouble cause,Raw counter Analysis,Select performance analysis issue,Query metric item, find the fault or trouble,Qu
37、ery TopN cell list in pre-defined cluster, find the worst cell or cell group,Query related metric item in the specified worst cells,Query and find out the fault or trouble cause,Analyze raw counter if necessary,Import performance counter from NE M2000,Step1: Check RRC metric item by “RRC setup analy
38、sis” issue,RRC Setup Rate is lower,Appendix: Nastar KPI Analysis Example,Step2: Find the worst TopN cell list in former cluster by “Forward”,Appendix: Nastar KPI Analysis Example,Step3: Find the worst cell in TopN list,Appendix: Nastar KPI Analysis Example,Step4: Query RRC reject cause in specified cell by “Forward”,Appendix: Nastar KPI Analysis Example,Step5: Find the RRC reject cause in the worst cell,Appendix: Nastar KPI Analysis Example,
