Huawei Test

7/17/2019 Huawei Test

http://slidepdf.com/reader/full/huawei-test 1/117

ons ie

probability refers to the pen;entage of dunlioii

wh n

the rr ceive sipal

_

~

•



odg e

cm -erage

probability refers

to

the percentage

of

duration when the receive signal

str ogth

is

gn :~



fdieLTE n ho urterf ce can be djusted by setting Paging Cycle

·

-

· -

· ~

.



ill•••-· .

aa •

_

Y

Klect

Top N cdlJ

and

the

access sua:ess

rm

is lower than the

threshold

die m berol•

·

_

f t

• I H

c

wconligun d by

uS<R

on the PRS tool







l l l i • _ ohoc mstallalioa Spec1lfoally. NE mediat oa software packages caa

be

mstalledwiJ >aut stoppiag

llM2

by







t

t

hillliiilie

dic

ate whelh< r

lhe.network.supp< 11s

6, QAM.



i£11 ,...

cmllol

board a

installed

in.die same

U

f l h UMTS

m•m

control board.wb

LTE

HDOP.8 •

- 1 - duoogl,UMTSLMT.



. . . ioa

utict,on

o a filterwhen tho

Sf1Ut10US

~igl Ois aregCDCJ>ted. tho farthet ho spooious . ._ . •

Im

sigDa1 strength.



BS odllRN3330. The

BS

cons,.ts

o ll<

.BBU3900 and RRU3332 Ed emet

pons""

RRNs

..., Call.~

•



z a . . lcnwr-1 wel equ pment;i . .luonize w lh lhecloclc ofupper-leveloquipm=l

I::>



t

c



lwidl

RBW) indicates lhe minimum signal

b:mdwiclth hiU

can

disli ~

ydie

of

he

m 111lment.





J, -r f l t 'f • l N( ~

mew m e

mt l » Jf UO

is

det¢rmmod lbe

in ta ~

horiwnu

bt;im

w.thb

» U l\>n~JyJ'l Q~tiooal

10 Ille ;uitct1oa~'< .;i i beam

widtb.-

0-0••

-





,

f mfr-:

r

f



_P H

or

URA_PCH

SQte

rccetVcs a

pa

g og me

ssage

over the PCCH

dieUE

· ·s



... ifures.

and da1a

bout the c a ~ c n be conectsd

afler

ll

c veotoc:cut5 Om

o

o m

or

two d ys is stored

•

•



n

1

function

the R1'1C morut

ors

lhe CPU/DSP u 3ge,

001111ecbv1ty

. cell pedormaote

lill1:

pe fom a w

. . i

i uros IO

show die monitonng results This helps monitor die current systemcqU p<llffll :indserviceop







~ ·

U <lS

3-Rates method.

f

h cun:ent r te i, MBR,, th rate drops duectly to the domil



i

•

D

measure

non-lincat modulalion.

t

s

in

he

unit

o

dBc

indicaling

the

nl o

mmgdi

ofioput signals increases to two times the

original

signal strength

he

~fa IIOII

1 tin tim s th origin l intetle ence strength.



illlml t

he

RLC layer s greater th n that t the physical layer



--

I



sinices subscriptionto analysis d t can e petformed before or after you aualle a



z r ed al the expense

of raosm ssion bandwidth. nd

interleaving

is

imp h C :nmlll

icl.li



=::





= = ·

..

_:::

_a=

.1

F • F

-:: --~--

.

:.

.

=

_.:;.....

_ :: _ -::.....



b sed h ndover policy

~ basedhandoYer policy



. : .: : __

=;:.=



iiillli 537 Mll tiple Choic:e{Select one cboice) Z.SScore)

af e

following NEs supports event-based counters

fBCs ?



• Blls

rel ted

t

Radio Resource Cont tol

ilillRllllCIIIII

rel ted to Radio Link

~ 11e111tsrelated to Radio Access earer



lill wingdefinitions

of

he E-RAB setup fuilure

event

is specified

by th Asststaarl

.._ ._ ERABSetupAttempt event occurs. the UE receiv

es

th ) RRCConnectionR.eestablisbmeotR.cqu

ie

ERABSetupAttempt event occurs, the UE does not receive the RR.C Connection

Reconfigura

lie

ERABSetupAttempt event occurs, the

UE doe

s not recei

ve the

RRC

Connection Reconfigura

stablishmentRequest message, and the cause value-in the RRCConnectionReestablish

ie

ERABSetupAttempt event occurs, the UE d

<>j

s not recei

ve

the

RRC Conne

c

tion

Reconfigura

e

IUtCConnectionReestablishmentRequest message.

s w



•ttllh••• lhllipl C looic~l ct one choice) 2.5Score)

.f 6D following

is the function

of h

Path Switch Request message?

01 AJl>in:71J n Sl-based handover, this message coniains the handover

coDlt0,3Jld.

O(B).During a handover, the target cell

uses

this message

to

tnform the source cell of exceptions.

0 C]Du cing a handover, the target cell uses this message 10 inform the source cell of handover completion.

OfDJJ mmg an X2-based handover, the target cell uses tills message to instruct the MME to complete the us



·i .

.

r

~1

. J

ilfille ollowing

systems does ARFCN 1000 elong

to?



of tbe

i ollowing situations

is th

L.HHO.Ptep.FailOut.HOCaocetto llllillllf'

~

--

OIB].Traosrniss.wnoverth~Sl

interface.

is.abno,ma[

O {CJ . heTJE initi~t.es:cJt

ll

cte.estaolishmeJtt1Jhthesourc~Ll E cell.

0{DJ IheEPCmalfunctions.

~





Hawing jg the function o he

eNB

SN Status Transfer message used in a handover?

hiltorica1 infonnation ofUEs to the target cell for admission decision

1.Halli6111

data

1inlc information about

the

source cell

to

the

targe

ce

ll

for establishing a

dam

forwarding

channel.

CJ.iNotm

the target cell that the handover

starts

i handover has been performed

1)-Natiti

e the PDCP information o he source cell to the target cell

for

data retransmission and encryption/integnty

p



- l IIJetlledl • • ol«) 25Sco,.)

iilil li:alch.mm Is carr,os

th~

random access J feambJe?

•



a

·

a t7 Mrltipl~Choice Select one choiceX2.SScore

O [A} H

aitena

0

[B] R

criteria

O C].Cl criteria

0 [D] S criteria

ed



•1hi,tnlf&c

statistics

of

he entire neiwotk and neighboring cells i fall handover

fa i l

m

the

entire iidwudi:

ID

cell

B

winch

of

the followmg must be considered?

PI-Sdlilll S

o

nactive timers on UEs in cell A and cell B

fawre :md

CPU Sage

in

cell A

I



~ = c o U Q t e r

IM3=-140dBc@2

·

43dBm,

after two 43 dBm monophonic signals an a

II

;,,>dnlafion

product



s1 I neats is incorrect about methods for detectingTDD long-distance imederenc:e

l\lllne s peduun

prototype tool

to query

the spectrum of symbols for

uplink

subframes. f h p

llfllllialls o

oug-d1stance -interference exists.

r fStz

to Dalyze

the

CHR

and compare

the power

levels

of symbols

O

and ofanuplink

su

t

esree s

the specified threshold, IDD long-distance

interference

exists.

•iae peC IUm prototype tool

to

query-the spectrum of symbols for uplink. sub.frames. f he p

TOO .long-distance interference exists.





liflmiDg . .nertts

is

incorrect

about proactive packet injection used for locating data 1r msmissioupn t lelliiir•

ijl-l:ti 111

packet

IDjecticm

UDP packets

at a specific

rate

are injected to a specific UGW

while

transmissioa

quality

-

lll'llaclm:packet injectionhas

no

mpact on coverage or capacity but occupies certain

radio

intemu:e

resources

of he ••UC

res

p cti .. epacket

njection was :fustintrocjuc~

n

RAN3 0

The function can be performed

only by using

serial ports

n

eRA

by

rmmmg

MML

commands.

p• •l c packet

injection 1JDP packets ata

specific

rate

are injected

to

a specific

UE wh i

le traffic

on the UE

is obsen:ed

-

;

J



... ai•SJ• MllklpltCi..ice Select

OM

dloi

ce) l.SS.

ott)

. .. ..... s

the

main

L TE RRC message

that

contains the UE-UTRA-Capabilitypar.,aw,lc l1



== eoorclina ion ndworking solutionoftbcHuawei recommended policy for operator in co . y C wlliclial

• lle

aetwo<k?



•-Slt mo es uses sym ol interleaving error detection nd error correction coding metbods topn ov l

• Ji

e;I



tp

v f

Mllkiple Cholce Select

on

e choice) 2.5Scor e)

- oftbe following synchronization modes isnot supported

y

he M2000?

)-5cheduled synchronization

[CJ Manual synchronization

[D] utomatic synchronization

- --

~

•



~iawer

angle

of

a directional antenna is

3

degrees

what is

the

m in

lobe angle



I

6 YBT250 resolm ion bandwidth

(RBW)

is

lO

k z

and the intenerenioe

strength

level

IS

M dbJD w m ~

bwlwidda

s •I



lHz

nd

lhe me sured

interference level

is 90

dBm

what-

is the

ctu l

interference

level for

he

Ml



plarming

s

tcquiced t

redQ e co-channel interference. To ensure the isolation degree

between

.freqtwn-:iM .

furmultipleiting.

hat

s the spacing between

these

frequeoc,

es

?



diid

1mDI

X actions which o

he

following comparisons s taken to prevent inconsistency

etetww~rmm ll IIME

)Olllplies

wttll

pnnciples?

lilliplli wllh

parameters o

no

.mial

eNo<leBs

Ir ••• t\a d ine

parameters

~·•-Wllh

proJcct planning parameters

i

I•



..-.-11i1ia1aal2

M

altip

le Choice Select

one

cboiceX2.SScore)

O BJ.3 dB

O [C]. dB

0 D].9dB



fb lowing

ph.ysicalcbarmel~ doesnot need spreading?

~----

... ~.:.. ..

:' -::.

---

- :;;=:.-~~:-..:.

:....;;...

=-..

= .:

.-"' : :::::=

- = ;:;= ~ = = ~ ---

--====

l .

M.ttiple h

oice Select

on

e cboice) 2.5Score)



~ .Paging

Cycle

O B].Rx

Le

vel

mm

O

[ ]

.T3412

0 [ ] UE MAXPOWER

~

- _ ____

_



J

5

lroi« Sd l one clio

ic

e) Z.SScore)

affic m a c eUdecreases, the downlink

PR usage

in the ceU decreases. hidt offla

.Ta--nv:sioa data tnflows are interrupted intermittently.

O B).Pa w

u

configurations are incorrect.

O C).F.mn

occur dunng transmission.

0

D]J111a fen:occ between neighboring cells

be

comes stronger.

~



NZ about

ddferencc between

lR and MR C js

inconcd?

MR C ftlCl iva performance s related-wrth the .number of antennas on the receiver wh tch is opposite to

the

JRC

~ ~

~la-iinJ

shatboth interference and noise are spatially wlute the MRC receiver meets the MMSE criterion

by

usmg theMB

m1«edmleefaerencc

exists JRC receivers use the

JRC

algorithm to obtain the MMSE.

•



1 •

~w in isfli.e

bandwidth

o he

UMTS system?

·

:



w

J



qulity

lll ll requirements dwing aUE handover from

G

to 4G

tbe

tlB



loe wding o 3GPP

TS 36.104 which bandwidth is used t o test the receiver

s iti~

~;

O {AJ.20MHz

O P llt5

MHz

[CJ O1 1Hz

O[DJ.5 MHz

O

fE]. l A

~ Hz



ciall eJec tjoo parameters by reading system information blocks

arul

determines whether tbe

ell llllllll

eel

~pimlal l l s he

UE rereads other system infonnation blocks to obtain oeighbonng cell

infonnation nd dde111 11•• ·

requiremeols.

he two typ s

o

system information

blocks refer

to whicho

the

following?



dlB

following s temerus is incorrect

QM

~t

ownlink hybrid-service scenarios where multipleTCP packets are

simultaneously11;1Qsmitte4

oa

You

i re

a msed t enable AQM when-multiple TCP-based bit ton:ent BT) services re running or large tiles are-beiugd

arr nmniogon the network.

;µ QM mcreases the transnussion

bandwjc lth

usage,





IL \Ol

needs

to connect to

which

N to

obt in

or

collect

data



RARmc:ssage

ijiii. .. ... maccess preamble_

•



plme iafonnation about ells served by the primary and secondaryc alrien

c





aiag

statauents is

i ncoffect?

speadillg

c;odes

are used to identify subscrib

~ s c r z t l i n g

codes are used t identify subscribers

DDwnlliok

spreading codes are used ~identify subscribers

W S iai. .;c



:cll11111mg the buffer zone is designedto res2lve which of he following ps ·obl111111

1

ijiii •ad traffic betwee,n,GSM .and ~ S cells after

Refanning

;Mpcmt<b annel

intetfereQ.ce

pr

_

ob l ~ Between

.

?S

M and UMT~

cells-after efannm

t t ;

; os~iee related

problein.s

between GSM

and.

UMT.S cells

f1l . :r...r~9 :::c ..= -

=

::: ~f - f H - ... : : ; -

-

~l d1a11nel interferenceproblems getweeh

SM 1uic\,J

: .Jfyi1S cells afterRefiuming

;;: ::



• Sil

udpleChoke Select one cboice) 2.5Score)

afdie ioDowiag conditions is used by a

UE to

determine

the

out-of-synchronizationst tus

on die

{AJ.flie

UE

oes

not receive the timing advance update command from

the

eNodeB before

the

timer

tBJ The UE

does not receive messages

at

theN S layer from the

NodeB

before the timer expires.

O CJ.The UE

does

not

receive service data from the eNodeB before the timer expires.

OIDJ The UE _foes not receive RRC signaling.from the eNodeB before the timer expires.



cl lie following

operations for etting tbc maximum tranmut

powe fo -

an

RRU7

I _

~ o f 1 b e

RRUIRFU.

2.

Run the MML cominandLOCRRUTC t set t e

m i n

lllplll

fflURI> .iesetdieRRlJlRFl.r 4 Run lhcMML command DSPRRU t <j1J<11Y1hecabioetm,mber,1,t,q.:k

~~~ UlUIRFU

. S.

Run the

MML command DSP 'IXBRANCH to check whether the

setting,

an ,

effectiw.

lliiii 7

l



cNodeBs

the

Trace

Server requires a bandwidth

of

450

Mbit s

3 d e ch

eNodeB

requires a bandwidlh

---. loymeat with the M2000, the Trace Server is automatipally Stalle~ or upgraded after the M2000 is i

L1E--SAE user

tracing is impossible without the

Trace Server

.

~

~



l· .9 44 llllkipl Clioice Selec:t one choice) 2.SScore

•ti awing

is

a throughput-based rate

incr

easemeasuz-ement event?



.

irlS llltipk

Claoi<e Selec:t

one

dloiu

) Z.SScore)

isillcm••itwn

DRX

long cycle dura~on when TimeAl.igrunentTimer is set t

sfl92 and

m·Ullllr Ai



~llllliilaR wilh

du dynamjc code

algorithm. he llllliimum number of code s is 5 and lheroa i11••

liiilt

• l l

il:c:odc rcosource

management algorithmat the

i arx e

time how many code words

th U

m

s



fflNICloal7 Maltiple Clt.oia Select one choi

«)

2.5Score)

Wliadi of1lle following equals 9 .85 dBd?

0~) . t ldBi

Q [Cj.11.5

d i

G [D] 12 dB i



t i•llil• • mt111is

about

TJ J

boo

dling

used

by

H

ua

wei

eNode

Bs is inc

om ct

?

liill••

opbOlla

l

fe

at

ur

e.

tll

illl

mqin>\ et

edge

coverage for dedicmed sctVices on the P

USCH

.

•

c m

be used

m uplink and do

wn

link schedul ing

Clllly

applies to Vo P

se

rvices.



: ils

CM B i

he

eNodeB h s received a CSFB indica tor

from

the

MME What

s

the

possiblea mei4

oneig oring inter frequency cells

are

configured.

]-The

u E

doesnotreport inter RAT cell signal measurement results.

f:1-The blind

handover priority is

set

to

O for neighboring cells n inter RAT handovers.

t flle

UE does

not support

inter R..A.T

handovers.



:lbllowiag

about batchreconfigw:ation is incon:ect?

s

good poctice

to the ME-provided radio data planning file to modify cell ftequencies PCis TACI :.

iimlllllrsb intra-frequency handovers in batches.

IDJ.a is

good

p :actice to use tho CME-provided ID/

name

modification function to modify cell IDs local cell

IDs

O CJ.Cell

Pacameter Auto--SynchronizationPolicy of he ME is required

for

associatedchanges.

O D).CME

balch

reconfiguration applies to multiple NEs data excluding data for neighboringcells.



lillilr w:aagein

an LT mo

network, downlink signals of a remote site

mterf eccwilhapliak

IIJO

i ol

subfi ame configurations DwPTS~GP:UpPTS) can e used to

better

control

1hc iutedi:ua dl

r

;;

a

I



f

r

w. ;g

statements

is incorrect?

a 1'nDeNode Dd an FDD eNodeB share a BBU subraclc they

must

use the same main

~ leciDr quipm nt

is a set ofconfigured RF antennas that can transmit and receive signals.

r SINGLEVLAN

mode

is

highly recommended nVLAN corlfigurations.

p

die l and

X

mterface_r use the

same IP address it is good ptactice to corlfigure the same nd

1 oin



7 z

M lltiple

Claoiu Select one chofoe)(Z.S ore)

s e

M

bide to

apply foc V

erit s

license files for M2000 deployment?



E 5 -

ollowing technologies are only used for

uplinlc

scheduling'

{AJ..Pm-allocated

scheduling

D

IBJ ITI

bundling

O [C}.64QAM

:

··



P

Magm a1111. ; C3D e

t ken to reduce the

cost of

designing a solution for a

uilding

Wida a

antennas ne r

the signal sourc~ n

open

areas

to

reduce routing

FEi F ni r u





_.. ..

Vw:H I SelKt Select two

or •• •

dtoi«s) Z.SScore)

caD drops

nsulted from sudden changed signals during network

op1Jro1zati<>n

you can

choose which o

heBE

semc.c

switchini rate decision threshold,

die

offiet of h possible

candidate n~ighboring cell.

i m ae lh B

event relati\·e threshold

and

increase the

val

ue

of

he

lB

event trigger hysteresis.

liia 2;e lhe 1A event

relative

threshold and .ncrease the

value

ofthe IA e ent

rigger

hysteresis.





~- -

111-.kipleSe~t

Select two or more choices) 2.5Score)

«6e i llowing can

be used

to reflect aa:ess-related problems by M2000

KPI

st listics n a CC i ii

i\ .E-RAB establishment failures

O B)..RR.C

connection establishment failures

0

C}£-RAB

establishment success rate

O{D]LowRRC connection establishment success rate

O{E}.Long Attach delay

=i





:O[A .Tbe

usec

savice

rate increases.

.__,(]

{BJ

The

tot l

cell throughput decreases.

J CJ-The-rate of

each

R

decreases.

O

ffiJ Ihe

average MCS on the

dov. -nlink

decreases.

11111 _



l t l are received Which two thu 1 >rder intermodulation products am generated

n

h

p ll



a tltllti

1be

PDP

conlext

and FTP setVices

cannot

e

perform eel

propedy llhii::tii



r

I ..

encryption llfOtocol

is

incorrectly

se t

.

• 1

port

is

not

configured or incorrectly configured.

mii Fr s s 11





•

imp ds

ofCA

on

the network capacity?

afU s

n

RRC_CONNECTED mode

deo-eases

._. .

ffect henetwork capacity and only increases the network cesoutce usage and total netwodt

duwgl

I •

_... .

..s

he

capacity of each cell involved in the live network.

IJl•iePU H PR resources are used

::

.

:...



: ; i __

·

_ bout spreading/despreading are correct?



e ph11al1on o spreading/dispreading, we easily know that the CDM systemis inted'ertnce-limited. lf he ·

lle

hie

inlmfereoce level. signals of he iarget user cannot be demodulate\ .

IJlft ling code used

in

the

WCDMA

system is

dVSF

code. The greater the spreading factor, the larger lhe proccssing pii

l'liemlin,ir;f,clespreading

itself does not increase any signal power.

In

fact,

the

processing

gam

is improved

by

incr=ing

m

IJll-ldullazM) j threshold Eb/No

=

Ee/Io x gain. Where Eb represents the energy

of

des~read bits, and refers to the ohip

onm

. sa.:tloal09 Maltiple Select

Select two

or

more choicesXZ,SScore)



·

of1he following are abnormal signaling?

O[A] Iu

elease

Request sent

by

the RNC

to

the CN

O[ ]~ leasc Command tent

by

the N to the RNC

I

O[C).RAB

Release Reques~

s htt

b

y

the RNC,~o the CN

I

O D].RAB

Assignment Request sen,

by

the C

to

the RNC

I



lll i III:•• 111s

about

the R event s incorrect?

iiillllii= 111 d t1he source cell measured quantities Is higher

than

the absolute threshold

mllCl =s

1hat the

quality ofa cell much poorer

th n

th tofbest cell

n

active set

lmllla411e.:s

1hat the quality

of

a cell is close

to

that

of

he bestcell or active set When

the

UE active

set s full

l



.. ldllll

JI

h\Z Seloct Sdect

tw

o or morecboictS) ?.SScore)



Nviter de is low,

t

locate problems, which of he following operationsneed to

e

pedwmed1

-•blNm-11 of

ell

users

CIIII

pow r

resources.

E n:sources.

•• dl

code tree-usage conditions.



monig xmditions are used

to

define call drops during a drive test?

na ei es any

message

system

message)

OV er

the

BCH.

lJE

eceiw,s

an

RRC Release message

with

the

cause value

Not Normal

;Ill :

OE

rece TeS any one

of

he following three messages:

CC

Disconnect,

CC

Release Complete. and

CC Release,

•

Not

Nonnal,

Unspecified.•

OE recei,·es any

ACTIVE

SET

UPDATE

message.



wing

measure the power splitter

indicato1s

?

mm

h

VSW

on

the

input

pon

mm:

the

insertion loss on the input port



...,S£TDHCPDE IECT command makes an eNodeB

n

lhe steady state enter the DHCPDETECT st:;rte_

, lacliliDdc,:BB m

theDHCPDETECT state will remove all data to

e

transmitted

and

enter theDHCPDETECT

state again ffw

DSP

DHCPRSLT command ts used to obtain detailed information about automati oestablishment

o

he remotemaintena



-

.

U



Piw 8

Multiple

Select

Select

two

or

more

choices)(Z.SScore)

lJ C]..RR.C connection setup successra te



- * h ndoverMSG3 reception times L.RA.Dedicate.HO.Msg; Rcv is greatertbaa

1he

w idi

of1he foUowmg re the possible reasons?

..,...,.-

pn amble

is

not allocated due to

internal

e1<ceptions in the eNodeBs.

fll M Cluae

the X2-based handovers fails.

... .......

t

'

;:

'

'

:

c

-

ttl

:.

••at sin_gY

T250 wfilchof h

e

following

iostrumcnli~

.

-



bhingto d

Huawei Test

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