03Nov_PM2_UMTS Radio Network Optimization Process

Radio Network Optimization Process - 3G Workshop

Mohamed Arshad MoAD RNE SSEAI Kuala Lumpur November 2008 All Rights Reserved © Alcatel-Lucent 2008

Agenda 1.

Introduction to Optimization

2.

Radio Network Planning

3.

Pre Launch Optimization & Acceptance

PLO – Single Site Verifications (SSV)

PLO – Cluster & Network Optimizations / Acceptance

PLO – Late Site Optimization (LSO)

4.

Post Launch Optimization

5.

Radio Network Engineering Activities

6.

Optimization Tools

7.

APAC 3G Success Story

2 | Optimization Process | Nov 2008

All Rights Reserved © Alcatel-Lucent 2008

1

Introduction to Optimization



Introduction : Why Optimize a Network?? Optimization aims at improving the network performance and/or network capacity. • To improve the system initial performance • To enhance the subscriber satisfaction • To increase the number of subscribers • To cater varying traffic pattern & usage

Methods may differ for : • Pre-launch optimization (performed for acceptance, trials) • Post-launch monitoring and optimization (E2E performance for in-service networks)



Network Optimization Phases

Strategy Definition


Roll-out & integration

Single Site Verification

Cluster Optimisation

Network Optimisation

Network Acceptance

Pre Launch Radio Network Planning

Network life

Post Launch

Radio Network Optimization

Radio Optimization Services

Pre-Launch Optimization

Post-Launch Optimization

No network load (limited traffic) Cluster optimization on drive test data High optimization gains OCNS (optional)

Significant network load (increasing) Optimization based on statistical data (counters, traces) Optimization gain less, but baseline performance higher Periodic route drive test



2




RNP - Design / Planning Assessment (Default) Activities

• In case Network Design & Planning is under Customer’s responsibility, assessment allows to : Refine targeted KPIs agree on detailed acceptance protocol (DT road definition, coverage holes’ exclusions…) propose initial design improvements (e.g. antenna tilts, CPICH Power, SC Reuse Plan…)

Deliverables • Final report presenting all the agreed theoretical exclusion areas and detailed acceptance protocol

Customer Benefits •Check of Customer’s RNP allows early adaptations if necessary •Clear and shared vision of future network’s performances



RNP - Radio Network Planning (Alternative)

Activities • Initial RNP : Coverage Service coverage Interference predictions Neighborhood Planning areas

• Cell Planning : Cell parameters planning Coexistence / Cositing / Site optimization Site Radio Survey / Ranking HO / Scrambling code planning Continuous RNP Site Search Areas to acquisition team

Deliverables • Final Radio Network Plan report, including final sites location, antennas, RF parameters,… • Coverage/Interferences plots of the final design

Customer Benefits •Complete Radio Network Plan based on Alcatel-Lucent 3G international expertise •Optimized CAPEX by leveraging existing sites •Risk sharing through higher Alcatel-Lucent commitments



Example: Clusterization & DriveTest Route Planning Cluster Site Status:Total Sites : 26 (4 IBS Sites) On-Air

: 26

Status as 4th June 08

3G Site Drive Route Cluster Q1_KCH1 polygon The length of this drive is around 80 Km. (~ 7 hours per test)

Comments : The drive goes through each main road from this area and through each cell.



Timeline & Resources Timeline Week Wk N-1

Wk N+0

Wk N+1

Wk N+2

Wk N+3

Wk N+4

Wk N+5

Wk N+6

Wk N+7

Wk N+8

Site Database SSV PLO - Cluster Optimization PLO - Network Optimization PLO Acceptance PLO Report & Presentation Post Launch Optimization - E2E

Resources 1 Drive Test team 1 RNE + 1 Back Office Support 1 Rigger team Support from OMC and Technical Support team. Support from ROM team. During the Cluster Acceptance, one person from Operator to verify testing procedures and results



Wk N+9

Wk >> N+9

Test Methodology Test Test name 1 Voice 3G Mobile to PSTN

Fix/mob Mobile Trace mobile Mobility Dual Mode MOC

2

PS DL 384 kbps

Mobility

Lock

MOC

3 4 5

PS UL 128 kbps Mobility Video 3G mobile to 3G Mobility Voice 3G Mobile to 3G Mobile Mobility

Lock MOC Lock MOC Dual Mode MOC

6

RTT 64/64; 64/128; 64/384

Fix

Lock

Static

7

PS attach + PDP activation

Fix

Lock

Static

Samples 200 Complete Route Complete Route 200 200 100 for each Test (1 location) 100 for each Test (1 location)

Protocol 90s,30s 5M 2M 90s,30s 90s,30s

In-car measurements for the UEs and outdoor for the scanner No attenuation chain For MTM tests, the terminating mobile will be under good radio condition (Static) In parallel Iu – Iub traces will be taken. (CTb trace)



3

Pre Launch Optimization & Acceptance



Pre-Launch Optimization Process View

PLO Standard Process: Site Verification

Site Implementation Audit

Cluster Optimization

Antenna/Parameters/Neighbour

Network Optimization

KPIs Assessment

Acceptance phase

KPIs Acceptance

Based on drive-test measurements



PLO Process – Single Site Verification (SSV)

1. Sites Verification

Objectives:

Checking the consistency between the planned parameters and the ones applied. SC, LAC, RAC, CID..

Drive Tests procedure:

Scanner + Mobile unlocked AMR + CS64 + PS Call / HSxPA Incar measurements

Optimisation tasks:

Validate Softer HO for each sector. Validate Inter-RAT(3G2G) HO No cross sector. Reliability of site identifiers applied at OMC (LAC, RAC, SC, …etc)

Site report

SSV Check list A site report embedded to the commissioning report in order to validate the site.



Single Site Verification Flow SDP List Drive Test Route Plan

TT resolution notification

OMC Parameters and Site information Check

NMS Operator WO Execution

OK? Yes

No

Datafiller’s WO Creation

Network Change Request (NCR)

DriveTest measurement

OK? Yes

Parameter, SC or Softer HO Problem

Call Test for investigation

Crossed Sectors / Hw Failures

. Problem Found?

No No

Yes Data Storage

Data Storage

Data Storage

Network Change Request (NCR)

Off-line analysis Trouble Ticket Process Close TT (if any)

Site Validation Report & Update ready for Optim list


Validation Report (per site) includes: •CPICH RSCP & EcN0 Plot •Best SC Plot •Ue TxPwr Plot •CS, Video & Data Call Test •SHO & HHO Test •Detected Issues


RNO Team Leader RNO Team Drive Test Technician O&M

Single Site Verification Report



PLO Process - Cluster Optimization / 1 • Split the network into smaller areas Cluster (~20sites) Objectives identifying coverage & quality problem spots recommend aerial and adjacency modifications

Analysis

Interference Quality & RF coverage SHO & HHO area Drop and Establishment Failures HSxPA Performance

Typical problems Pilot overshooting Weak coverage Missing neighbor

Corrective tasks performed Tilt and azimuth modification Neighbor declaration (inter system included) Parameter modification.

• Lessons learnt from customer roll-out

Roll-out should be driven by cluster in order to ensure start the optimal optimization work ASAP AMR services only to be tested (Mobile 3G lock and unlock) The drive test routes To be defined by RNP study Shall starts with 90% cluster sites readiness



PLO Process - Cluster Optimization / 2

Cluster Optimization : Only voice services: 2 drives Drive Test

Test name

Before Optimisation 1 1 Voice 3G Mobile 1 2 Voice 3G Mobile After Optimisation 2 1 Voice 3G Mobile 2 2 Voice 3G Mobile

Fix/mob Mobile

Protocole

to Test Number to Test Number

Mobility Mobility

Lock Unlock

MOC MOC

3600s, 45s 90s, 45s

to Test Number to Test Number

Mobility Mobility

Lock Unlock

MOC MOC

3600s, 45s 90s, 45s

Drive 1:Voice lock + unlock (Before Optimisation work) Drive 2:Voice lock + unlock (After optimisation work)

Analysis Interference / Pilot Pollution Quality & RF coverage SHO & HHO area Drop and Establishment Failures HSxPA Performance


Trace mobile


Cluster Optimization Analysis Plot



PLO Process - Network Optimization / 1

• Network optimization Optimize a group of clusters covering a certain region or a complete Network. Same activities as in cluster optimization but on network (Network) wide, to ensure the homogeneous quality of the network Focus done in the inter-cluster areas

• Lessons learnt from customer roll-out Drive test roads should be defined thanks to a RNP study and the Cluster Optimization. AMR, Video, PS DL service will be tested (including HSxPA features) Mobile for voice service can be in dual mode (3G-2G) ( to test mobility to 2G) Main routes only can be driven To be defined by RNP study



PLO Process - Network Optimization / 2

Network Optimization: Main roads Drive Test

Test name

AMR Voice 1 1 Voice 3G Mobile to Test Number Video CS64 2 2 Video 3G Mobile to 3G Mobile PS DL 3 3 PS DL384 kps

Fix/mob

Mobil e

Trace mobile

Mobility

Unlock

MOC

90s, 45s

Mobility

Lock

MTM

90s, 15s

Mobility

Lock

MOC

5 MB

Analysis Quality & RF coverage SHO & HHO area for each services Drop and Establishment Failures HSPA Performance



Protocole

Network Optimization Plots



Cluster & Network Optimization Readiness Cluster Definition Ready for Optim List

Optimised Cluster

DT Route

List

Definition

DT Route Definition

No No

Cluster sites

Optimised Cluster = 100% ?

ready > 90% ? Yes

Yes DT Planification (Reg. Manager + Team Leader)

DT Planification (Reg. Manager + Team Leader)

RNP Regional Manager Drive Test

Drive Test RNO Team

Cluster Optimization




Drive Test Technician

Drive Test Troubleshooting Flow Cluster Drive Test planned

Network Drive Test planned

Drive Test

Data Storage

RNO Analysis (Pilot Pollution, coverage hole, HO Fail, missing neighb., etc…)

Yes Perf. OK ? Problem Identification

TT Closure

No

Non identified Problem

Network Modification (param, aerial, neighb.)

High Level Radio Support

Validation Process with Operator

System Problem

Planned Operations Process

Trouble Ticket Process

RNO Team

RNO Team Leader

Drive Test Technician

Validation DT Planification

Operator Validation DT O&M



Network Change Request Flow Problem Detected during Drive Test Parameter or neighbours modification

Aerial modification Cell Change Simulation Before / After

2G impact?

Yes

Operator 2G validation

No

Parameter Modification Proposal

Yes

Aerial Modification Proposal

Operator sub-region validation

No

Modification proposal REJECTED

Modification Rejected Cause 2G

Yes

Modification proposal ACCEPTED Sub-region RNO Team

Modification request to O&M Co-ordinator

Sub-region RNO Team Leader Regional Manager

Issue Raised during weekly Optimization meetings PLANNED OPERATIONS PROCESS

Operator Sub-region RNP 25 | Optimization Process | Nov 2008

No


PLO Process - Network Acceptance Drive Tests protocol: 1 2

1 2

Voice 3G Mobile to PSTN Voice 3G Mobile to 3G Mobile

Mobil e Mobility Unlock Mobility Unlock

1

3

Video 3G Mobile to 3G Mobile

Mobility

4 5 6

PS attach + PDP activation + RTT 64/64; 64/128; 64/384 PS DL384 kps PS UL 128kps

Drive Test

4 3 2

5

7

Test name

Fix/mob

Lock

Fix Lock Mobility Lock Mobility Lock 2/3 roads Intra RAT Handover AMR and PSBorder Unlock

Trace mobile MOC MTM

90s, 45s 90s, 45s

200 or Complete DT routes 200 or Complete DT routes

MTM

90s, 15s

200 or Complete DT routes

MOC MOC

Payload 32 Bytes 5 MB 2 MB

100 or Complete DT routes 5 or Complete DT routes 5 or Complete DT routes

MOC

As soon HHO to 2G + 20s

Drive1: Test 1 and Test 3 (Voice 3G -> PSTN + Video MTM) Drive2: Test 2 and 6 (Voice MTM + PS UL) Drive3: Test 5 (PS DL) Drive4: Test 4 (PS attach+ PDP+RTT) Drive 5: Test 7 (Intra RAT HO AMR & PS)

Network Acceptance Report: Include drive tests plots and KPIs results 26 | Optimization Process | Nov 2008


Protocole

Samples

PLO Process – Example of Network Acceptance KPI KPI CS CS AMR 12,2 kps VOICE CALL

CBD/ DU Polygon

Urban Polygon

SubUrban Polygon Rural/ Highway Polygon

CPICH RSCP

> = -80dBm @ 95% > = -87dBm @ 95% > = -93dBm @ 95% > = -95dBm @ 95%

CPICH EcIo Call Setup Time 3G mob to 3G mob 3G mob to PSTN Call Setup Success 3G mob to 3G mob 3G mob to PSTN Call Quality Call Drop Rate BLER % (2) Inter RAT HHO succ rate inter RNC Soft HO Success rate (3) intra RNC Softer HO Success rate (3) CS 64 VIDEO CALL VT Call: 3G mob to 3G mob setup delay VT callSetup success rate VT call drop rate BLER % (2)

> = -10 dB @ 95% > = -10 dB @ 95% > = -12 dB @ 95% > = -14 dB @ 95% < = 8 sec @ 80% < = 6 sec @ 80%

< = 8 sec @ 80% < = 6 sec @ 80%

< = 8 sec @ 80% < = 6 sec @ 80%

< = 8 sec @ 80% < = 6 sec @ 80%

> = 98% > = 98%

> = 98% > = 98%

> = 98% > = 98%

> = 98% > = 98%

< = 2% < = 2% > = 95% > = 95% > = 95%

< = 2% < = 2% > = 95% > = 95% > = 95%

< = 2% < = 2% > = 95% > = 95% > = 95%

< = 2% < = 2% > = 95% > = 95% > = 95%

< = 12 sec @ 80% > = 98% < = 3% < = 2%

< = 12 sec @ 80% > = 98% < = 3% < = 2%

< = 12 sec @ 80% > = 98% < = 3% < = 2%

< = 12 sec @ 80% > = 98% < = 3% < = 2%

PS PDP context Activation succ rate > = 97% PS attach failure rate (PS drop call rate) (4)< = 3% UL Thpt for PS 64 @ 50km/ h Avg 51 kbps DL Thpt for PS 128 @ 50km/ h Avg 102 kbps DL Thpt for PS 384 @ 50km/ h Avg 307 kbps Round Trip Time for 64 kbps PS service < = 300ms @ 90% Round Trip Time for 128kbps PS service < = 200ms @ 90% Round Trip Time for 384 kbps PS service < = 150ms @ 90% inter RNC Soft HO Success rate (3) > = 95% intra RNC Softer HO Success rate (3) > = 95% Inter RAT HHO succ rate > = 95%

> = 97% < = 3% Avg 51 kbps Avg 102 kbps Avg 307 kbps < = 300ms @ 90% < = 200ms @ 90% < = 150ms @ 90% > = 95% > = 95% > = 95%

> = 97% < = 3% Avg 51 kbps Avg 102 kbps

> = 97% < = 3% Avg 51 kbps Avg 102 kbps

< = 300ms @ 90% < = 200ms @ 90% < = 150ms @ 90% > = 95% > = 95% > = 95%

< = 300ms @ 90% < = 200ms @ 90% < = 150ms @ 90% > = 95% > = 95% > = 95%



PLO Process - Late site Optimization

Definition: Site planned but the site integration has been delayed Cluster 90% readiness. Unwarranted delay

Objective: Optimise these sites one by one without any degradation of the existing network.

Drive Tests procedure: Scanner + Mobile locked in 3G AMR, Video and PS DL/UL service Incar measurements

Acceptance Results: Based on Full Acceptance Test Cases Only for optimize site



4

Post Launch Optimization



Post-launch UTRAN Radio Optimization

QoS monitoring from OMC Daily alerter Weekly dashboards Worst Cell List

QoS monitoring from Drive tests Optimization activities

Antenna optimization: tilt and eventually azimuth, on site tuning Neighbor tuning (adjacency addition and deletion on OMC) Logical Parameters tuning and modification on OMC Feature testing and implementations (with operation support) New site and new BB QoS follow-up (Site Optimization linked to site final acceptance)

Capacity Network Management Capacity Network optimization (CEM reshuffling…) Traffic dimensioning for Code & Power Iub capacity enhancement (IMA)



Post-Launch - Periodical Drive Test

• Periodical Drive Test campaigns.

• Troubleshooting traces.

• Objective:Periodical Drive test call Objective: statistics as seen by the end users on specific roads (usually main roads).

• Objective: Identifying the cause of network problem flag by RNE.

• Services:

Radio assessment : Voice AMR Long call and Visio CS64 Long call -> coverage, pilot pollution, etc.

Network performance : Voice AMR Short calls, Visio CS64 short calls, PS DL 384, PS UL 64

• Collecting data on problem area found in Drive test in order to complete the analyse. • Services: Vary according to the type of problem. ->If radio problem: CS service. • If not sufficient combined with Iu/Iub traces and spectrum measurement.

-> CSSR, Call Drop Rate, average throughput, etc.



Post-Launch - Optimization based on statistics

• Once traffic build-up, allows reliability of counter-based statistics • Each week and/or each day : KPI report (Dashbord) and worst cells lists per KPI are collected through ALU NPO, on a per area basis and network . (->Trouble Ticket, Drive Test, Iu traces, Iub traces). • QoS Data (examples) : Traffic CSSR & Call drop HHO success rate SHO success rate Congestion RRC success rate



Counters Applicability

Report Executive level KPIs

Network expansion planning

• Accessibility • Retainability • Network Quality • Network Traffic and Congestion • Network Reliability

• Derive Call Models • Capacity Evaluation / Growth planning • Network architecture optimization • Transmission plan optimization • New services introduction


Counters Applicability

• Detailed Performance monitoring • Quality of Service Evaluation • Network Parameters Tuning • Cell level optimisation (RF & Cell Parameters) • New features introduction


Monitoring and troubleshooting • Issues & nw malfuctions detection • Failure identification and analysis


5

Radio Network Engineering Activities



Optimization Activities - Overview

Drive tests Measurement Campaigns :

Wh ana at to lyz e??

Brings information about the Network performance. Possibility to Identify and Correct Network problems.

The following elements will be analyzed from all the data collected in order to determine the overall quality of the Network performance :

- Coverage - Quality - Neighbor List - Call Admission Failure - Drop Calls



3G Optimization vs. 2G Optimization

• 3G Optimization

• 2G Optimization

Interference optimization

Interference optimization

Key issue as only ONE frequency

Based on frequency plan

Optimize adjacencies (3G,3G-2G)

Optimize adjacencies (2G ONLY)

Parameters optimization

Parameters optimization

Based on drive-tests measurements for the moment. ( Pre-Launch Optimization)

Based on statistic data (Metrica) & Drive test

Optimization processes are similar to GSM experience… …but to be slightly adapted to reflect 3G technical specificities More attention on planning issue Take into account 2G/3G interworking Training Needed UMTS fundamentals training Optimization: On Job Training



Optimization Activities – Drive Test Route

The definition of the drive test road is a very import task and should be done very carefully. ••Recommendations: Recommendations: ••Optimization Optimization routes are defined from primary (e.g. highways) and secondary (e.g. Network boulevards) .The engineering team should boulevards).The determine additional roads in traffic areas where interference and soft handover are expected. ••Depend Depend of the Optimization phase: ••For For Cluster optimization = dense roads ••For For network optimization the road are less dense but the area is bigger. ••A A route should adequately cover 44-6 -6 hours drive, depending on sites count. ••Should Should be the same for the drive test BEFORE and AFTER optimization.. 37 | Optimization Process | Nov 2008


Optimization Activities - Coverage

Coverage Definition: The CPICH RSCP (Received Signal Code Power) provides indication of the availability of DL Pilot Channel, coverage, to meet services requirements.

Constraints: A minimum RSCP level is required to maintain and/or establish a call and a specific Service -> is very important to understand the coverage limitations and expectations of your network.

Optimization: Antenna Tilting Sector re-azimuth CPICH Power Optimisation Add new site in order to change the RSCP levels allocation. Each individual sector should be dominant only on his pre-defined area.



Optimization Activities - Quality Quality Definition: The network radio quality indicator is the CPICH Ec/Io. This indicator provides a clear vision of the level of interference created by other cells over the most likely server, in a certain area.

Constraints: If a certain CPICH Ec/Io is not meet the UE will not be able to communicate with the BS, not being able to establish a call and possibly dropping it if already connected. A bad CPICH Ec/Io will correspond to a bad UE Ec/No which is used to evaluate and execute HO events and Active Set updates, indispensable to maintain a connection.

Optimization: The optimization action applied are the same as for the coverage.



Optimization Activities - Pilot Pollution

Coverage and Quality EcIo GOOD

EcIo BAD

RSCP GOOD

OK

Interference Insuffisant Overlap

RSCP BAD

Coverage Problem

Coverage Problem

Scanner/Mobile analysis • Mobile analysis confirm: The RF coverage for each cell inside the cluster Insure the power settings Neighbour list tuning. No dominant server => Pilot pollution / wastage of radio resource



Optimization Activities - Neighbour Cell

Neighbour List (3G-3G; 3G-2G) Definition: In order to perform the mobile measure: •EcIo of the neighbor cells for SHO •EcIo or RSCP (parameter) of the neighbor cells for HHO

Constraints: •The Uu not check cells that are not declared in the neighboring list even if it is the best cell. •Unwanted noise and the quality deteriorated.

Initial declaration: •Automatic With the planning tool •Manual: Mapinfo (macro) and/or with 2G counters statistic NPO (HO request)

Optimization: •Automatic: Post processing tool queries. Be careful only based on the drive test samples. •Manual: Compares both scanner and mobile maps. Mobile CPICH EcIo or RSCP and Scanner CPICH EcIo or RSCP.( If the correct cell is not used in HO, the mobile will be degraded comparing to scanner. )



Optimization Activities – Failure Events

Drop Calls/ Calls setup fail Definition: •Those events are a reaction of the UE, or of the RNC, to a certain problem. •A Drop can be due to RADIO,UTRAN or CN problem (SYSTEM)

Optimization: All the previous slides explained the causes The of problem lead to those events, so it’s imperative to control them. You should know the “story” of the call Ask you question: •What are the events before the drop? •Coverage? •Quality? •AS count? •Compress mode?



6

Optimization Tools



Tools’ Objectives Enhance Network Performance Parameter Optimisation System debugging / On-the-field Feature Validation Audit the network for smart introduction of new features

Network Performance Monitoring KPI Reporting / Performance Benchmark Complement Counters’ view

Early System Testing Be ready before commercial launch Assessing the impact of new features / risk control

Generate Services revenues Added value services based on system expertise and early knowledge New technology introduction strategy / Customer guidance

Enhance Product Portfolio New OAM products Ideas for feature enhancements 44 | Optimization Process | Nov 2008


Engineering Tools IP

O&M RFO BORIS

Internal

Call Tracing

RNC

Iu Iub

NodeB

NodeB Logs

XCAP Nethawk Radcom

XCAL

Counters

RF Scanner UE 45 | Optimization Process | Nov 2008

Qualcomm 6275/6280/7200 Datacard Option All Rights Reserved © Alcatel-Lucent 2008

PrOptima

Tools Mapping Pre-launch optimisation (Deployment) Optimisation Troubleshooting Benchmarking Reporting

On-going optimisation (Live Network) Troubleshooting

Nethawk Radcom

Remote Troubleshooting & Optimisation

Monitoring Reporting

RFO BORIS

RFO - Internal BORIS

Internal

PrOptima

TOOLS USAGE

CTg

XCAP

counters

Drive Test RF Scanner XCAL CTb

IP

O&M RNC Iu

UE

Iub NodeB Logs OPTIMISATION COMPLEXITY 46 | Optimization Process | Nov 2008


NodeB

ALU Internal RF Tools



Call Trace Applicability Detailed KPIs • Possibility to Merge Call Trace data with Drive Tests logs • Detailed per RNC, Cell & Service Statistics

Remote Optimization • Avoid Unecessary & Costly Drive Tests • Scrambling Code Analysis • Detailed Handover Statistics • Neighbouring List Tuning • RF Coverage Control • RF Coverage Improvement

Advanced Optimization • Detailed Performance monitoring • Quality of Service Evaluation • Detailed Parameter Optimisation (Power Control, BLER targets, ...) • New features introduction • Dropped Call and Access Failues root-cause analysis


Network Validation & IOT

Call Trace Applicability

• Inter-operability testing with mobile vendors • Inter-operability with Core Network • NW Acceptance and New Services indroduction

Detailed troubleshooting • Reduced need for external probes • Over the air message flows • Over the air message content • Internal network messaging on all external interfaces • Internal Network events • Error message analysis All Rights Reserved © Alcatel-Lucent 2008

Call Tracing Types Trace all calls of specific UE(s)

CTa

Activated from Core Network Trace all calls of specific UE(s)

CTb

Activated from Access Network (UTRAN) Trace a % of calls over the NW on a specific cell or group of cells.

CTg

Activated from Access Network Trace a % of calls (only neighbouring optimisation related messages) over the NW on a specific cell or group of cells. Activated from Access Network Post-Processing with WQA Tool (UA5)

CTn

UA5

Object Tracing

Trace data related to all elements (events) handled by an object of the network :

A cell or group of cells Iu CS interface Iu PS interface Neighbor RNC (an Iur) or a group of neighbor RNC One RNC

Activated from Access Network 49 | Optimization Process | Nov 2008


Performance Management with Geographical Call Traces (CTg) •

Powerful feature to trace all calls in a certain area.

•

RFO capable to post-process Call Traces files.

•

Employed for: •

Trouble-shooting

•

Features Optimisation

•

Network KPIs computation

•

Traffic Distribution

Remote Troubleshooting & Optimisation Minimum Drive Tests 50 | Optimization Process | Nov 2008


ALU - RFO

• Used by R&D & Core WNE. Early Readiness & Product Phased tool. • Post-processing Tool to analyse data log files from UE acquisition tools, Call Trace and NodeB logger. • Advanced post-processing solution for HSDPA and HSUPA. • Supports traces from: XCAL, QXDM and Opera (Alcatel-Lucent). • Mapping capabilities. • Synchronised multi-window MMI. • Synchronises Call Tracing and NodeB Logger files with UE files.



RFO GUI



Features of Alcatel-Lucent’s Call Trace Function UE traces processing: Couei / Nemo / TOM files / TEMS (UE & Scanner) RNC Call Trace processing capabilities: CTa / CTb (IMSI) / CTg / OT-Cell (GEO) Full Protocol decoding capabilities: RRC / QCT / NBAP / RNSAP / RANAP Sync capabilities across all traces N-KPI’s calculation (based on UE & CT traces) Call Log summary with Alarms and message pairing Call Model / State machine aligned with product features (based on message information element content) Built-in diagnosis (based on all types of traces) HSxPA ready Graphical and Mapping MMI 53 | Optimization Process | Nov 2008


Commercial RF Tools



Drive Test - Equipment Configuration



Drive Test Tools Chain

Nokia Trace mobile

Scanner

Nemo Uu trace tool

Ranopt •Incar measurements for the UE and outdoor for the scanner •No attenuation

Uu trace analysis

Off-line post-processing Real-time trace capture



ANRITSU – ML8720B-C / ML8740-1

• RF Scanner. • Used to evaluate the radio propagation characteristics of a wireless network. • 4MHz band wide band. • Models 8720 can be used for indoor testing. • High accuracy by high speed sampling. • Measures EcNo, RSCP, SIR in the CPICH and EcNo, RSCP in the SCH. • Can be blocked to specific SC. • Spectrum monitor mode. • Can measure simultaneously 2 FDD carriers



NEMO Outdoor • Drive Test Data Acquisition Tool. • Supports different UEs: Qualcomm, Nokia, Sanyo, Samsung, LG, Novatel Data card… • Multi-UE testing available. • Real time RRC/PPP/FTP layers message displayed. • AutoCall Function. • Real time mapping function with positioning information and general call related parameters. • WCDMA Scanner (Anritsu, Panasonic, PCTEL) and GPS logged with UE data.



PP Tools : NEMO Analyzer @ RANOPT • Post-processing Tool to analyse the data log files from Nemo Outdoor • WCDMA, EDGE, GPRS and GSM. • Multi-display of traced data: Messages, Graphs, Maps and Tables. • Synchronisation between views. • Automatic generation of customized reports in PowerPoint and Excel format. • Graphical Analysis: drag & drop, multiple graphs per window. • All collected messages are decoded, filtering capabilities. • Statistics available: “KPI” indication, setup events, time between messages, message count.



NPO (Network Performance Optimizer)

• ALU’s Performance Management Solution. • Allows to monitor the network performance, detect network issues and troubleshoot them through the counters. • Collects and stores for long periods of time all the UTRAN counters. • Includes metrics (indicator based on several counters) defined by Alcatel-Lucent. • The counters are available at RNC level and/or at FDDCell level. • Easy report generation (drag & drop). • Pre-defined reports available.


Intersystem Cell Reselection 1200000

100.00% 98.00%

1000000

96.00% 94.00%

800000

92.00% 90.00%

600000

88.00% 400000

86.00% 84.00%

200000

82.00% 0 15-mar-06


80.00% 22-mar-06 Attempts

29-mar-06 Success

Success Rate

8

APAC 3G Success Story



APAC 3G Success Story – Operator C 7 RNCs, more than 800 sites in 4 regions. PLO Completed for 87 clusters, with UTRAN network fine-tuned PLO Acceptance Drive Test with 23 KPIs per cluster >> all meet Handled 23.5 million calls a week, 65% of it PS traffic >> Unlimited Broadband Data package



APAC 3G Success Story – Operator C Network Statistical Performance for major QoS KPI

** Weekly Statistics



www.alcatel-lucent.com www.alcatel-lucent.com



Backup Slides



Downlink load simulation with OCNS*

•

Principle

It creates artificial interference in downlink

It is used to simulate downlink load and perform tests with one or several UE, providing that RAC is passed

Common channels OCNS channels Dedicated channels

* OCNS : Orthogonal Channel Noise Simulation 66 | Optimization Process | Nov 2008


Node B

NodeB Emission Power Impact

OCNS for 50% Load

Without OCNS

OCNS CPICH P-SCH S-SCH SCCPCH (FACH+PCH) PCCPCH (BCH) AICH PICH DCH P totale

43

dBm 0 33 28 28 29 31 24 28 36,0

% Load (common channels + OCNS) % Load (OCNS) compared to max power % Load (OCNS) compared to traffic


dBm

19952,6

Activity CPICH Factor Reference (% time) 100% -5 -5 -4 -2 -9 -5

5% 5% 0% 90% 80% 96% 100%

mW 1,0 1995,3 31,5 31,5 0,0 1133,0 201,0 605,7 0,0 3999,1 20% 0,0% 0,0%

Emission Max Power

Common channels

Common channels

Emission Max Power

OCNS CPICH P-SCH S-SCH SCCPCH (FACH+PCH) PCCPCH (BCH) AICH PICH DCH P totale

43

dBm

dBm 37,8 33 28 28 29 31 24 28 40,0

% Load (common channels + OCNS) % Load (OCNS) compared to max power % Load (OCNS) compared to traffic


19952,6

CPICH Reference

-5 -5 -4 -2 -9 -5

Activity Factor (% time) 100% 5% 5% 0% 90% 80% 96% 100%

mW 6025,6 1995,3 31,5 31,5 0,0 1133,0 201,0 605,7 0,0 10023,7 50% 30,2% 30,2%

03Nov_PM2_UMTS Radio Network Optimization Process

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