w(Level3) Wcdma Rno Huawei Umts Kpi 20040515 a 1.0

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Transcript of w(Level3) Wcdma Rno Huawei Umts Kpi 20040515 a 1.0

UTRAN Key Performance Indicators 20040515

1

IntroductionThese slides focus only on initial UTRAN KPIs. There is a comprehensive list of raw counters from which these initial KPIs are produced.

The counters as well as KPIs will continuously be redefined and updated.

2

UTRAN KPI Overview

Call Setup Success Rate Call Drop Rate of Signaling Plane Call Drop Rate of User Plane Signaling Congestion Rate Traffic Congestion Rate Soft Handover Success Rate Hard Handover Success Rate Inter-RAT Hard Handover Success Rate

3

Contents

Call Setup Call Drop Congestion Handover Traffic

4

Call Setup Success Rate

Formula of Call Setup Success Rate:Call Setup Success Rate = RRCSetupSuccRate RABSetupSuccRate 100%

Can be divided into two parts: CS&PS For four types of QoS:

Conversational (e.g. voice and video) Streaming (e.g. streaming video or audio) Interactive (e.g. browsing) Background (e.g. emails or file download)

5

RRC Setup Success Rate

The formula of RRC Setup Success Rate:RRC Setup Success Rate = RRC Connection Setup Success / RRC Connection Request 100%

RRC Setup Reject Causes:

Congestion (Walsh, Power, CE, etc.) Unspecified (mostly transmission or NodeB problem)

Other RRC Setup failure reason

UE cant receive RRC CONNECTION SETUP NodeB cant receive RRC CONNECTION SETUP COMPLETE

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RRC Connection Setup

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ExampleRRC_REQ RRC_REJ RRC_REJ_CONG RRC_SETUP RRC_SETUP_SUCC RRC_SETUP_SUCC_RATE 3332

2 03330 3184

95.56%

UE

cant receive RRC CONNECTION SETUP

The downlink channel transmit power is not enough or the UE receive sensitivity is not good.NodeB

cant receive RRC CONNECTION SETUP COMPLETE

The UE transmit power is not enough or the NodeB receive sensitivity is not good.8

RAB Setup Success Rate

The formula of RAB Setup Success Rate:RAB Setup Success Rate = RAB Assignment Success / RAB Assignment Request 100%

Can be divided into two parts, for four types of QoS RAB Setup Failure Causes:

Parameter violation Non supported UTRAN capabilities Relocation triggered Transport connection failed to establish Unavailable resources Protocol error

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RAB Setup Flow Chart

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ExampleRB_SETUP RB_SETUP_SUCC CS_RAB_REQ_SETUP_CONV CS_RAB_SETUP_SUCC_CONV PS_RAB_REQ_SETUP_BKG PS_RAB_SETUP_SUCC_BKG CS_RAB_SETUP_SUCC_RATE_CONV PS_RAB_REL_SUCC_RATE_BKG RB_SETUP_SUCC_RATE_CONV 1057 1054 982 979 75 75

99.69% 100.00% 99.72%

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Contents

Call Setup Call Drop Congestion Handover Traffic

12

Call Drop Rate of Signaling Plane

Call Drop Rate of Signaling Plane is calculated by counting RNC-originated Iu connection release. Can be divided into two parts: CS&PS RNC-originated Iu connection release Causes:

OM intervention User inactivity Repeated integrity checking failure UE generated signaling connection release RL out-of-synchronization

13

Call Drop Rate of Signaling Plane

The formula of Call Drop Rate of CS Signaling Plane:Call Drop Rate of CS Signaling Plane = RNC-originated CS Domain Iu Connection Release / RNC-originated CS Domain Iu Connection Setup Success 100%

The formula of Call Drop Rate of PS Signaling Plane:Call Drop Rate of PS Signaling Plane = RNC-originated PS Domain Iu Connection Release / RNC-originated PS Domain Iu Connection Setup Success 100%

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RNC-originated Iu connection release Flow Chart

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ExampleRNC_CS_IU_REL RNC_CS_IU_REL_DUP_INTEG RNC_CS_IU_REL_OM RNC_CS_IU_REL_RL_FAIL RNC_CS_IU_REL_SIG_REL RNC_CS_IU_REL_UE_INACT RNC_CS_IU_SETUP Call Drop Rate of CS Signaling 50 RNC_PS_IU_REL 0 RNC_PS_IU_REL_DUP_INTEG 0 RNC_PS_IU_REL_OM 26 RNC_PS_IU_REL_RL_FAIL 5 RNC_PS_IU_REL_SIG_REL 0 RNC_PS_IU_REL_UE_INACT 3085 RNC_PS_IU_SETUP 1.62% Call Drop Rate of PS Signaling 51 0 0 18 22 0 251 20.32%

For For

Call Drop Rate of PS Signaling, the main reason is wrong APN configuration in UE RL_FAIL, need optimize poor coverage and neighbors, 3G-2G handover

also can improve this indicator16

Call Drop Rate of User Plane

Call Drop Rate of User Plane is calculated by counting RNC-originated RAB releases.

Can be divided into two parts, for four types of QoS

RNC-originated RAB release Causes:

OM intervention UTRAN generated reason RAB preempted

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Call Drop Rate of User PlaneThe formula of Call Drop Rate of CS User Plane:Call Drop Rate of CS User Plane = RNC-originated CS Domain RAB Release / RNC-originated CS Domain RAB Setup Success 100%

The formula of Call Drop Rate of PS User Plane:Call Drop Rate of PS User Plane = RNC-originated PS Domain RAB Release / RNC-originated PS Domain RAB Setup Success 100%

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RNC-originated RAB release Cause

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ExampleCS_RAB_SETUP_SUCC_CONV PS_RAB_SETUP_SUCC_BKG RNC_CS_RAB_REL_REQ_CONV RNC_PS_RAB_REL_REQ_BKG Call Drop Rate of CS User Plane Call Drop Rate of PS User Plane 979 75

4 4 0.41% 5.33%

For

CS/PS_RAB_REL, need optimize poor coverage and neighbors, 3G-2G handover

also can improve this indicator

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Contents

Call Setup Call Drop Congestion Handover Traffic

21

Signaling Congestion RateThe formula of Signaling Congestion Rate:Signaling Congestion Rate = RRC Connection Reject (Cause: congestion) / RRC Connection Request 100%

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Traffic Congestion RateTraffic Congestion Rate is calculated by counting the RAB Assignment Setup Failure (cause: congestion).

Can be divided into two parts: CS&PS

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Traffic Congestion Rate

The formula of CS Traffic Congestion Rate:CS Traffic Congestion Rate = CS Domain RAB Assignment Setup Failure (Congestion) / CS Domain RAB Assignment Setup Request 100%

The formula of PS Traffic Congestion Rate:PS Traffic Congestion Rate = PS Domain RAB Assignment Setup Failure (Congestion) / PS Domain RAB Assignment Setup Request 100%

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Traffic Congestion Rate

25

Contents

Call Setup Call Drop Congestion Handover Traffic

26

Soft (Softer) Handover Success Rate

The formula of Soft (Softer) Handover Success Rate:Soft (Softer) Handover Success Rate = Soft (Softer) Handover Success / Soft (Softer) Handover Request 100%

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Soft (Softer) Handover Flow Chart

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SHO Failure Causes

When the UE handles the ACTIVE SET UPDATE message, the abnormal cases may be occurred and the UE shall transmit an ACTIVE SET UPDATE FAILURE message with the following failure causes

Configuration unsupported Incompatible simultaneous reconfiguration Protocol error Invalid configuration

If the time expired before RNC receives the message ACTIVE SET UPDATE COMPLETE or ACTIVE SET UPDATE FAILURE from UE, RNC increases the SHO failure counter with the following cause

No response from UE

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SHO Failure Flow Chart

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Example

SHO_EVAL_REQ SHO SHO_SUCC SOFTERHO SOFTERHO_SUCC SHO_SUCC_RATE

5652 5511 5500 1411 1411 99.8%

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Hard Handover Success Rate

The formula of Hard Handover Success Rate:Hard Handover Success Rate = Hard Handover Success / Hard Handover request 100%

32

Hard Handover Flow Chart

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Hard Handover Failure Cause

The detail hard handover failure cause statistics include two hard handover directions on the cell object :

outgoing hard handover initiated by RNC in each original cell. incoming hard handover in the target cell initiated by RNC

When the UE handles the PHYSICAL CHANNEL RECONFIGURATION message, the abnormal cases may be occurred and the UE shall transmit an PHYSICAL CHANNEL RECONFIGURATION FAILURE message with the following failure cause:

Configuration unsupported Physical channel failure Incompatible simultaneous reconfiguration Protocol error Cell update occurred Invalid configuration

If the time expired before RNC receives the message PHYSICAL CHANNEL RECONFIGURATION COMPLETE or PHYSICAL CHANNEL RECONFIGURATION FAILURE from UE, RNC increases the hard handover failure counter with the following cause

No response received from UE

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Hard Handover Failure Flow Chart

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InterRAT Handover to GSM Success Rate

The formula of InterRAT Handover to GSM Success Rate:

InterRAT Handover to GSM Success Rate = inter-RAT handover from UTRAN to GSM success / inter-RAT handover from UTRAN to GSM attempts 100%

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InterRAT Handover to GSM Flow Chart

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InterRAT Handover to GSM Failure Cause

When the UE handles the the HANDOVER FROM UTRAN COMMAND message, the abnormal cases may be occurred and the UE shall transmit an HANDOVER FROM UTRAN FAILURE message with the following failure causes

Configuration unacceptable Physical channel failure Protocol error Inter-RAT protocol error Unspecified

If the time expired before RNC receives the message IU RELEASE COMMAND from MSC, RNC increases the InterRAT handover to GSM failure counter with the following cause

InterRAT handover to GSM no response

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InterRAT Handover to GSM Failure Flow Chart

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ExampleCS_INTRAT_HO_OUT_PREP CS_INTRAT_HO_OUT_PREP_SUCC CS_INTRAT_HO_OUT_ATT CS_INTRAT_HO_OUT_SUCC CS_INTRAT_HO_OUT_SUCC_RATE(%) CS_INTRAT_HO_OUT_FAIL_CFG_UNSUPP CS_INTRAT_HO_OUT_FAIL_INTER_RAT_PROTCL CS_INTRAT_HO_OUT_FAIL_NO_RSP CS_INTRAT_HO_OUT_FAIL_PHYCH_FAIL CS_INTRAT_HO_OUT_FAIL_PROTCL CS_INTRAT_HO_OUT_FAIL_RELOC_ABORT CS_INTRAT_HO_OUT_FAIL_UNSPECNeed

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