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Transcript of Huawei Test
7/17/2019 Huawei Test
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ons ie
probability refers to the pen;entage of dunlioii
wh n
the rr ceive sipal
_
~
•
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odg e
cm -erage
probability refers
to
the percentage
of
duration when the receive signal
str ogth
is
gn :~
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fdieLTE n ho urterf ce can be djusted by setting Paging Cycle
·
-
· -
· ~
.
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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
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l l l i • _ ohoc mstallalioa Spec1lfoally. NE mediat oa software packages caa
be
mstalledwiJ >aut stoppiag
llM2
by
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t
t
hillliiilie
dic
ate whelh< r
lhe.network.supp< 11s
6, QAM.
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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.
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. . . ioa
utict,on
o a filterwhen tho
Sf1Ut10US
~igl Ois aregCDCJ>ted. tho farthet ho spooious . ._ . •
Im
sigDa1 strength.
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BS odllRN3330. The
BS
cons,.ts
o ll<
.BBU3900 and RRU3332 Ed emet
pons""
RRNs
..., Call.~
•
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z a . . lcnwr-1 wel equ pment;i . .luonize w lh lhecloclc ofupper-leveloquipm=l
I::>
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t
c
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lwidl
RBW) indicates lhe minimum signal
b:mdwiclth hiU
can
disli ~
ydie
of
he
m 111lment.
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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••
-
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,
f mfr-:
r
f
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_P H
or
URA_PCH
SQte
rccetVcs a
pa
g og me
ssage
over the PCCH
dieUE
· ·s
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... 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
•
•
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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
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~ ·
U <lS
3-Rates method.
f
h cun:ent r te i, MBR,, th rate drops duectly to the domil
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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.
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illlml t
he
RLC layer s greater th n that t the physical layer
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--
I
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sinices subscriptionto analysis d t can e petformed before or after you aualle a
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z r ed al the expense
of raosm ssion bandwidth. nd
interleaving
is
imp h C :nmlll
icl.li
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=::
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= = ·
..
_:::
_a=
.1
F • F
-:: --~--
.
:.
.
=
_.:;.....
_ :: _ -::.....
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b sed h ndover policy
~ basedhandoYer policy
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. : .: : __
=;:.=
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iiillli 537 Mll tiple Choic:e{Select one cboice) Z.SScore)
af e
following NEs supports event-based counters
fBCs ?
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• Blls
rel ted
t
Radio Resource Cont tol
ilillRllllCIIIII
rel ted to Radio Link
~ 11e111tsrelated to Radio Access earer
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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
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•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
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·i .
.
r
~1
. J
ilfille ollowing
systems does ARFCN 1000 elong
to?
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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.
~
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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
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- l IIJetlledl • • ol«) 25Sco,.)
iilil li:alch.mm Is carr,os
th~
random access J feambJe?
•
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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
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•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
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~ = c o U Q t e r
IM3=-140dBc@2
·
43dBm,
after two 43 dBm monophonic signals an a
II
;,,>dnlafion
product
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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.
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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
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... 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
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== eoorclina ion ndworking solutionoftbcHuawei recommended policy for operator in co . y C wlliclial
• lle
aetwo<k?
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•-Slt mo es uses sym ol interleaving error detection nd error correction coding metbods topn ov l
• Ji
e;I
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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
- --
~
•
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~iawer
angle
of
a directional antenna is
3
degrees
what is
the
m in
lobe angle
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I
6 YBT250 resolm ion bandwidth
(RBW)
is
lO
k z
and the intenerenioe
strength
level
IS
M dbJD w m ~
bwlwidda
s •I
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lHz
nd
lhe me sured
interference level
is 90
dBm
what-
is the
ctu l
interference
level for
he
Ml
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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
?
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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•
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..-.-11i1ia1aal2
M
altip
le Choice Select
one
cboiceX2.SScore)
O BJ.3 dB
O [C]. dB
0 D].9dB
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fb lowing
ph.ysicalcbarmel~ doesnot need spreading?
~----
... ~.:.. ..
:' -::.
---
- :;;=:.-~~:-..:.
:....;;...
=-..
= .:
.-"' : :::::=
- = ;:;= ~ = = ~ ---
--====
l .
M.ttiple h
oice Select
on
e cboice) 2.5Score)
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~ .Paging
Cycle
O B].Rx
Le
vel
mm
O
[ ]
.T3412
0 [ ] UE MAXPOWER
~
- _ ____
_
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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.
~
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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.
•
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1 •
~w in isfli.e
bandwidth
o he
UMTS system?
·
:
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w
J
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qulity
lll ll requirements dwing aUE handover from
G
to 4G
tbe
tlB
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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
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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?
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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,
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IL \Ol
needs
to connect to
which
N to
obt in
or
collect
data
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RARmc:ssage
ijiii. .. ... maccess preamble_
•
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plme iafonnation about ells served by the primary and secondaryc alrien
c
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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
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: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
;;: ::
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• 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.
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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
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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
.
~
~
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l· .9 44 llllkipl Clioice Selec:t one choice) 2.SScore
•ti awing
is
a throughput-based rate
incr
easemeasuz-ement event?
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.
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
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~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
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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
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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.
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: 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.
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: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.
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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
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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
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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?
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E 5 -
ollowing technologies are only used for
uplinlc
scheduling'
{AJ..Pm-allocated
scheduling
D
IBJ ITI
bundling
O [C}.64QAM
:
··
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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
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_.. ..
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.
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~- -
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
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: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 _
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l t l are received Which two thu 1 >rder intermodulation products am generated
n
h
p ll
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a tltllti
1be
PDP
conlext
and FTP setVices
cannot
e
perform eel
propedy llhii::tii
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r
I ..
encryption llfOtocol
is
incorrectly
se t
.
• 1
port
is
not
configured or incorrectly configured.
mii Fr s s 11
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•
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
::
.
:...
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: ; i __
·
_ bout spreading/despreading are correct?
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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)
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·
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
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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
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.. ldllll
JI
h\Z Seloct Sdect
tw
o or morecboictS) ?.SScore)
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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.
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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.
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wing
measure the power splitter
indicato1s
?
mm
h
VSW
on
the
input
pon
mm:
the
insertion loss on the input port
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...,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
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-
.
U
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Piw 8
Multiple
Select
Select
two
or
more
choices)(Z.SScore)
lJ C]..RR.C connection setup successra te
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- * 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~
.
-
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bhingto d