CHALLENGE

High signaling load per traffic due to excessive usage of smart phones PS traffic effecting the CS quality due to high

signaling load

Chronic offender sites negatively impacting overall performance measures Worst performing cell analysis Load balancing between sector carriers IRAT mobility strategy review Over - shooters and coverage limited cells analysis

Capacity and bottleneck analysis

CUSTOMER PROFILE

800 Cells

3 Carriers

3 Months

2 RF Experts

Cross feeder & HW checks Configuration parameters revision

Missing neighbor definitions

Scrambling Code plan revision

8.8% total improvement in CQI

Cap-Ex Saving = $ 3,487,500*

Data Traffic increased 25%

RESULTS

PERFORMED ACTIONS

Missing neighbor definitions

Tools

Case Study 1 : Tier - 1 Operator / North America

SON SUITE

Tools

CHALLENGE

New operational problems with LTE commercial launch

Low UL / DL throughput Unresolved IRAT strategy for LTE, 3G and 2G

253 eNodeB

2 Months

2 LTE Engineers

CUSTOMER PROFILE

RACH root sequence planning, PCI planning

P.I.Works tools integrated to LTE Collected performance counters, configuration and alarm data 4G call traces; CTR, UETR, MME analyses

PERFORMED ACTIONS Kpi Classification Baseline KPIs Final KPIs

Accessibility 90.90% 99.31% 8.41%

Retainability 91.09% 99.01% 7.92%

Rach Success Rate

9% 38% 29%

DL Throughput 10513 16029 52.46%

UL Throughput 4382 8325 89.98%

% Time on LTE 85.67% 90.76% 4.72%

RESULTS

Detailed RF shaping and parameter tuning

Detection and resolution of low UL / DL throughput problems

1 Carrier

SON SUITE

WEB

Case Study 2 : Tier - 1 Operator / North America

Tools

CHALLENGE LTE Commercial Launch

Incorrect parameter settings

causing big RACH problems on LTE

780 eNodeB

1 Carrier

Daily

CUSTOMER PROFILE

The RACH attempts decreased to half, efficient use of uplink resources

The RACH success ration increased from 30% to 65% PERFORMED ACTIONS

Traffic ( eRAB attempts) remained the same, no traffic loss

Less redundant attempts resulted in less uplink interference UL throughput increased improving significantly

user perception

Re- planning of the entire Rach Root Sequence using P.I.Works SON Suite, RACH Self Optimization Function.

RESULTS

No Engineers

SON SUITE

WEB

Case Study 3 : Tier - 1 Operator / North America

Tools

CHALLENGE

To retain KPI targets and increase

Network Quality Index levels. Customer Survey results compliant with

required QOE levels.

2500 Sites

1 Year

2 RF Engineers

CUSTOMER PROFILE

PERFORMED ACTIONS

&

RESULTS

KPI / Index

RxQual 57%

RRC Setup Success Rate 35%

SDCDH Drop Rate 20%

HO Success Rate 28%

NQI 22%

QoE 17%

Case Study 4 : Tier - 2 Operator / Europe

SON SUITE

WEB

SON SUITE

WEB

1 Year

Tools

15000 Sites

Dual Carriers

CUSTOMER PROFILE

Low RRC Setup Success Rate

Very high SPU Load - exceeding 90%

CHALLENGE

PERFORMED ACTIONS

Reduce unnecessary signaling without reducing the user traffic

Expand the RNC capacity by adding more SPUs

Success Ratio over 99.9%

SPU Load below 60%

RESULTS

Case Study 5 : Tier - 1 Operator / Europe

SON SUITE

WEB