Fabunmi_Defense PPT_May 2015_v2

Huawei Confidential February 23, 2006

Date: 22/05/2015

3G OPTIMIZATION DEFENSE

HUAWEI TECHNOLOGIES CO., LTD.PREPARED BY :

Fabunmi Motunrayo

1

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

2

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

3

Name: Fabunmi Motunrayo

Staff Id: f80017988

Product Line: UMTS

Department : Managed Service (NIS).

Rep. Office: Lagos.

Tutor: Xujunying/Kayode

INTRODUCTION

4

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

5

SKILLS

o Competent use of M2000 & PRS for KPI/Resource monitoring

o Competent use of LMT for monitoring and tracing signaling to resolve RF issues.

o Query KPIs from M2000, PRS, MOS5200 & MOS7100,

o Competent use of Analytical and Drive Test tools e.g. OMSTAR, NPMaster, FMA, DAMS,

MapInfo, TEMS Investigation, Probe Assistant, Actix etc.

o RAN KPI Analysis and Performance Counters.

o Competent use of Microsoft Office Package e.g. Excel, PowerPoint, Word Document etc

6

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

PLANS FOR NEXT STAGE & SELF STUDY

CONCLUSION

7

Work Content:

• My 3G RNC Daily KPI Monitoring and Analysis and Optimization covers 4 RNCs

HKDRN01, HBURN01, HSKRN01 KNHRNC08 and consisting of 4 Platinum cities

Kaduna, Kano, Gombe and Jos

o Parameter Tuning, PSC & Neighbor Audit

o Scripts execution, monitoring and report preparation for Key changes to the network

i.e ATM to IP migrations, IP cluster E1 expansions, second carrier implementation,

EFD, RNC and NodeB upgrade, HSUPA IC, SRB over HSUPA etc

o Customer Complaint resolution

JOB DESCRIPTION

8

JOB DESCRIPTION – HBURN01

9

JOB DESCRIPTION – HBURN01

There has been improvement in the accessibility, retainability and throughput KPIs due to

the ATM to IP migrations, IP Cluster E1 expansions and new feature implementations etc

Healthy traffic growth is noted in both CS and PS

10

JOB DESCRIPTION – HKDRN01

11

JOB DESCRIPTION – HKDRN01

there has been improvement in the retainability and throughput

12

JOB DESCRIPTION – KNHRNC08

13

JOB DESCRIPTION – KNHRNC08

Healthy traffic growth is noted in both CS and PS

14

JOB DESCRIPTION - CHALLENGES

Urgent ATM Sites migration[ongoing] – HBURN01

IP cluster TR0065, AD0017, GOBY01 etc E1 expansion[ongoing] – HBURN01

Link expansion required on KT0291 IP Cluster[pending] – KNHRNC08

KD0088 High traffic site requiring new site for traffic sharing[ongoing] – HKDRN01

BR0020 board overload alarms WBBP board expansion[closed] – HBURN01

15

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

16

TECHNICAL CASES

Case 1:

Carrier Balancing & Poor PS RAB setup success rate and R99 Drop call rate on

BU0017L

Problem Description:

F1 and F2 users/tarffic is not balance and there was poor PS RAB success rate and R99 drop call rate on

BU0017 H and L.

Possible Causes:

Missing Neighbors (Intra-frequency & Inter-frequency)

Overshooting of the site (Propagation delay)

Limited Radio Resources (Congestion) due to traffic

Alarms (Transmission, Hardware)

Configuration errors

17

TECHNICAL CASES

Handling process

o Query as one of the 10 top worst cells

o Check transmission or hardware KPI infected alarm on the site, none found.

o Check the traffic/Users on the site and discrepancy is noted between F1/F2

o Compare the TCP, CPICH, Maximum HSDPA user number, Maximum HSUPA User number and the DL/UL equivalent total user

number

o Check the LDR

o Check the DRD RNC and NodeB wise

o Noticed that there was DRD set on the RNC but was set on only F1 cells of the site so I enabled DRD on the F2 to mirror F1 settings

LST UDRD, LST UCELLDRD

ADDUCELLDRD:CELLID=26075,LDBDRDSWITCHHSDPA=ON,REDIRBANDIND=DependOnNCell,TRAFFTYPEFORBASEDUELOC=RT

-0&NRT-1;

18

TECHNICAL CASES

Case 1 Details:

HSDPA Users & HSDPA Traffic Before and After Optimization

19

TECHNICAL CASES

Case 1 Details:

HSDPA Users & HSDPA Traffic Before and After Optimization

20

TECHNICAL CASES

Summary

o When DRD is configured on the RNC, all the cells of particular site(F1/F2) should have the

same DRD status either set or not set. When F1 /F2 are configured differently conflicts

might occur.

21

TECHNICAL CASES

Case 2:

Deterioration of PS RAB KPI as a result of High DL Power, HSDPA and HSUPA

Congestion after resumption of NYSC camp


High Downlink Power/HSUPA/HSDPA congestion was experienced on KN0241J causing a dip in PS RAB

Success Rate.

The congestion resulted in the poor performance of the site/RNC in terms of RAB failure.

Possible Causes:



Low TCP value set

Unavailability of the Neighbor Sites

High RTWP due to Internal/External Interference/increase in traffic


Poor coverage


22

TECHNICAL CASES

Location of the site on google map

23

TECHNICAL CASES

Handling process


o Check transmission or hardware KPI affecting alarms on the site, none found.

o Check the traffic/Users on the site and increase is noted

o Locate the site on Google earth map, check the propagation to the neighbor sites noted that it is an isolated site.

o Check the TCP, Maximum HSDPA user number, Maximum HSUPA User number and the DL/UL equivalent total user number

o Increase the TCP, HSDPA/HSUPA Maximum User numbers and DL/UL equivalent user number

MOD UCELL:CELLID=20813,MAXTXPOWER=460; [Increase the Transmit Cell Power from 430dbm to 460dbm]

MOD

UCELLCAC:CELLID=20813,ULTOTALEQUSERNUM=120,DLTOTALEQUSERNUM=200,MAXHSDPAUSERNUM=96,MAXHSUPAUSER

NUM=60;

MOD UCELLHSUPA:CELLID=20813,ERGCHEHICHCODENUM=3; [because Actual Max HSUPA Num = (E RGCH *20)]

24

TECHNICAL CASES

Case 2: Details:

HSDPA Maximum UE,

HSDPA/HSUPA User

Congestion Before and

After Optimization

25

TECHNICAL CASES

PS and HS RAB Before and After Optimization

26

TECHNICAL CASES

Summary

o Compare and Check CS and PS traffic stats, Increase in traffic observed

o Before parameter tuning, ensure to check all RF related issues (pollution, Cell Availability,

missing neighbor, transmission and hardware alarms).

o If HSDPA/HSUPA congestion continues, KN0241G & H have very low number of users, and

physical optimization to share traffic with 1 of them will be explored. Else, 2nd carrier is

recommended .

27

TECHNICAL CASES

Case 3:

Poor PS RAB setup success rate and YB0008G


There was poor PS RAB success rate on YB0008G and the primary failure reason is DL power congestion.

Possible Causes:


Pilot pollution/Near-far effect


Unavailability of the Neighbor Sites

High RTWP due to Internal/External Interference/increase in traffic


Poor coverage


28

TECHNICAL CASES

Handling process


o Check transmission or hardware KPI infected alarm on the site, none found.

o Check the traffic/Users on the cell and its neighbors [high traffic on cells and neighbors]

o Noted TCP is maximum and utilization is high on the cell and nearest neighbors

o Downlink Load Reshuffling(LDR) sequence of actions during CAC algorithm re-ordering i.e change it from default to First -

BERateRed(Channels are reconfigured for the BE service), second – CodeAdj(The fragments of the downlink code tree are

arranged), third – QosRenego(The renegotiation on the QoS of the uncontrollable real-time service is performed), fourth –

InterFreqLDHO(The inter-frequency load handover is performed) [green line]

o Increase DL cell oriented CAC threshold parameters by 5% to increase admission [red line]

MOD UCELLLDR:CELLID=29541,DLLDRFIRSTACTION=BERateRed,DLLDRSECONDACTION=CodeAdj,DLLDRTHIRDACTION=QoSRenego,

DLLDRFOURTHACTION=InterFreqLDHO;

MOD

CELLCAC:CELLID=29541,DLCONVAMRTHD=85,DLCONVNONAMRTHD=85,DLOTHERTHD=80,DLHOTHD=90,DLTOTALEQUSERNUM=10

0;

29

TECHNICAL CASES

Case 2 Details:

DL power congestion & before and after both optimization activities

30

TECHNICAL CASES

Summary

o Compare and Check CS and PS traffic stats

o Before parameter tuning, ensure to check all RF related issues (pollution, Cell Availability,

missing neighbor, transmission and hardware alarms).

o If power congestion continues and serious, since cell is already second carrier and

neighbor cells are congested, we can change to a higher power rated RRU

31

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

32

CONTENT

INTRODUCTION

SKILLS

JOB DESCRIPTION

TECHNICAL CASES

CONCLUSION

33

CONCLUSION

• Sincerely appreciate the effort of my project supervisors, team members and mostly my

mentor, in the person of Kayode Banjo for his relentless efforts

• Personal improvement with respect to

Technical Knowledge

Problem Solving expertise: RF and KPI Optimization

Team Participation

Management and Leadership skills and abilities

34

Thank You

Fabunmi_Defense PPT_May 2015_v2

Documents

Transcript of Fabunmi_Defense PPT_May 2015_v2