3a_lte performance measurements-v1.0-sh.ppt
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7/25/2019 3a_lte performance measurements-v1.0-sh.ppt
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1 © Nokia Siemens Networks Presentation / Author / Date
For internal use
LTE Performance Measurements
• Rafael Sanchez
• System Performance NaM
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2 © Nokia Siemens Networks Confidential
Contents
• Measurement locations
Dallas !"" #$and 1!%
Dallas A&S 'and #$and (%
)s*oo 2+"" #$and !%
Asia 2+"" #$and !%
• Measurement cases Peak and A,era-e .hrou-h*uts
Sin-le ) throu-h*ut and 0atenc
0ink Ada*tation
Cell Ca*acit with Multi)s
Scheduler and 0A interactions M3M4 Ada*tation
Mo'ilit Performance
5ando,er Performance
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6 © Nokia Siemens Networks Confidential
C o m m e r c i a l H W
C o m m e r c i a l H W M a r 0 9 B a s e l i n e S W
M a r 0 9 B a s e l i n e S W
C o m m e r c i a l H W
C o m m e r c i a l H W M a r 0 9 B a s e l i n e S W
M a r 0 9 B a s e l i n e S W
#*icture made *u'lic in midDec 2""7%
Test e!ices 8 69PP :el; March 2""7 $0 com*liant 0.) S$don-les
Fle<i NS #MM)%Fle<i NS #MM)%
Fle<i N9 #SA)9&%Fle<i N9 #SA)9&%
LTE Trial Setu"
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( © Nokia Siemens Networks Confidential
Downlink throu-h*ut
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= 6 + = ; 1
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= 6 ; =
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= ( 6 = 2 1
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= ( + =
( 1 !
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= ( ; = " 1
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? M ' * s @
Pea# Rate Sta$le %&' M$"s (ith )0 MHz LTE
1(; M'*s*+PP L% Pea# Throu,h"ut
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> © Nokia Siemens Networks Confidential
Summary of LTE -iel Measurements (ith %0 MHz
• TCP traffic in D0 0B 0oadedand nloaded in Stationar
• NearB MidB Far corres*ond to5i-hB MedB 0owB S3N: conditions
• A,era-e latenc of 22 ms
>"M'*s 0imited ' Cate-or 2 De,ice
Near
Me
-ar
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+ © Nokia Siemens Networks Confidential
Summary of LTE -iel Measurements (ith %0 MHz
• D0 0 TCP Mo'ilit .hrou-h*ut *erformance measured in dri,e route
with and without 0oad• A,era-e A**lication 0aer .CP D0 ./Put was 27>M'*s and 0 was 1(M'*s
• 4'ser,ed also an e<*ected MCS ada*tation due to chan-in- :F Conditions
.L MCS .istri$ution /L MCS .istri$ution
MCS Eariation
in Dri,e :oute
MCS Eariation
in Dri,e :oute
+(AMPSG PSG 1+AM
1+AM
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%0 MHz Throu,h"uts !s Raio Conitions
• 2+95H )s*oo .est Network
• Static location in the Field= Cate-or 6 de,ice• Downlink 40 M3M4 ada*tation
• *link 40 Power Control
• .CP traffic
Downlink *link
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0
5
10
15
20
25
LTE round trip time
ms
)<*ected 0atenc
Latency .istri$ution
Core
BTS
UE
Uplink scheduling grant
Uplink scheduling request
Retransmissions
Buering time
Transmission time
Measured 0atenc
A,era-e 0atenc 22ms in line with e<*ected
,alue
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For internal use
Lin# a"tation
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Lin# a"tation
•0ink ada*tation
Selection of modulation and codin- schemesB transmit *ower le,el andthe num'er of s*atiall multi*le<ed laers as a function of the*re,ailin- radio conditions #e-B C3%
4uter loo* link ada*tation #C3 measurement normaliHation%
4uter loo*0A
5A:mana-er
3nner loo*0A
PacketScheduler
$uffer
transmission'uilder
C3mana-er
01 Ack/Nack
C3
4ffset5A:info
0AreIuests/decisions
Schedulin- decision
01
06
02
.ransmitted si-nal
.efault scheuler is
Pro"ortional -air in
time an fre1uency
Controls the first
transmission
BLER tar,et2
Hel"s
com"ensate for
C34 errors2
C34 for .L RRM5
Sounin, an CS4
mana,er for /L
RRM2
synchronous aa"ti!e HR3 (ith
4ncremental Reunancy
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Lin# a"tation 6 Mo$ility 7S4NR !s Throu,h"ut8
Presentation / Author / Date
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.o(nlin# Throu,h"ut s Raio Conitions
Presentation / Author / Date
• $etween Point A and Point $B the :S:P and :S: ,alues dro*B S3N: followsB which results in lower
re*orted C3 ,alues ' ) and hence lower 01 .hrou-h*ut
• .hrou-h*ut follows the S3N:B C3 cur,es as e<*ected .hrou-h*ut dro**ed as the S3N: measured dro*s
and it tends to increase as the measured S3N: increases
• $etween Point A and Point $B :ank 3ndicators and C3 ,alues dro*B with *ossi'ilit to tri--er M3M4 chan-e
Resource Bloc#s llocate in .L
.L S4NR
B
Ran#
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16 © Nokia Siemens Networks Confidential
MCS llocations s PRB llocation
Presentation / Author / Date
•.his -ra*hB shows the MCS Allocated to the ) for the duration of incell dri,e with the P:$ allocated
• .he arrows inside the red 'o< indicatedB *eriod when MCS0e,el1 dro*s to Hero indicatin- that the ada*ti,e
M3M4 used was transmit di,ersit
B
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1> © Nokia Siemens Networks Confidential
Cell Ca"acity (ith Multi /E Testin,
• Cell Ca*acit De*ends 5ea,il on ) distri'ution
Need to define reference setu*= 0imited num'er of )s a,aila'le
:esults cannot 'e directl com*ared with 69PP ca*acit fi-uresJ 1""K loadB 5omo-eneous distri'ution of users in 5e<a-onal Scenario
• Downlink Cell Ca*acit Measured with 6(
)s s*read o,er the cell
1 ) NearB 1 ) MidB 1 ) Far awa from the
Cell and 1 ) mo'ile
*+PP .L
*+PP /L
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1+ © Nokia Siemens Networks Confidential
• Downlink = users close to $.S -ethi-her data rates due to hi-her
modulation and codin- schemes
• *link = *ower controlcom*ensates *ath loss and allusers -et similar data rates
LTE Multi:/E Cell Ca"acity
/E%
/E)/E*
/E&
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1! © Nokia Siemens Networks Confidential
LTE Multi:/E Cell Ca"acity 7448
• Cell Ca*acit Measured in NSN Cluster with ( )s either
sittin- in different :F Conditions or ,aria'le :F• Downlink from a'out (12M'*s in No load to 61;M'*s in 0oaded
scenarios
• *link from a'out 17(M'*s in No load to 1!7M'*s in 0oaded scenarios
• For stationar tests )( is located in Mid *osition
.L Cell Ca"acity
*%2'M$"s
&%2)M$"s*92*M$"s
%'2*M$"s %;29M$"s%92&M$"s
/L Cell Ca"acity
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1; © Nokia Siemens Networks Presentation / Author / Date
For internal use
Scheuler an L 4nteractions
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Scheuler an L interactions• .hrou-h*ut of 1 M'*s maintained throu-hout ,aria'le SN: dri,e test
• :$s adLusted accordin-l with C3/MCS ada*tation
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2" © Nokia Siemens Networks Confidential
La$ .L </E test= PRB llocation Bitma"
•P:$ Ma* shows P:$
allocation on each ..3• PF allocates P:$9rou*s 'ased on Su'$and C3 information
P R B i
1""ms sna*shot
Su'$and C3 for 1 ..3
0e-end
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La$= /L < /E>s in %0MHz e?am"le PCC5 (P:$s
P:AC5=
+P:$se,er 1"ms
:andom5o**in- for
each )
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For internal use
M4M@ a"tation an Mo$ility
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26 © Nokia Siemens Networks Confidential
@"en Loo" M4M@ S(itchin,
mimo@lC1iTh/
.ime
C3
:3
mimo@lC1iTh.
mimo@lR4Th/
mimo@lR4Th.
C34 A Th/5 R4 Th/
Remain T?.i!
SMT?.i! T?.i!
C34 A Th/5 R4 A Th
S(itch to SM
C34 Th.5 R4 A Th.
S(itch to T? .i!
C34 A Th.5 R4 Th.
S(itch to T?.i!
T?.i! SM
C34 A Th/5 R4 A Th/
S(itch to SM
Switching from/to TxDiversity modeto/from SpatialMultiplexing modeaccording to CQI and
RI
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E?am"le= .L /.P Mo$ility 70D Loa8
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2> © Nokia Siemens Networks Confidential
/E Pers"ecti!e=: Throu,h"ut an R- Conitions
S"atial
Multi"le?in,
Lo( S4NR
Me S4NR
Hi,h S4NR
S"atial
Multi"le?in,
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eNB Pers"ecti!e: @L M4M@ S(itchin,
$uffer -ets em*tsometimes so not allP:$s allocated
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LTE )0 MHz .ri!e Testin, (ith L+ /E .o(nlin#
TCP:.o(nlin#=
2"1""M'*s
M4M@ SM M4M@ T?.i! M4M@ SM M4M@ T?.i!
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Hano!er Performance
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4nter eNB Hano!ers
Presentation / Author / Date
L% !, F 92<%
M$"s
!, S4NR F%<29& B
RSRP !aryin, from:<0 to :%)0 Bm
L% !, F '2&;
M$"s
Re linesre"resent aneNB chan,e
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Hano!er Summary
DP 1" M'*sused in testin-
Eer lowinterru*tion time
3nterru*tion .ime Measured at Control Plane
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Contact information G o(nloa location
• 3f ou ha,e an IuestionsB *lease contact *resenter=
:osario Colaianni
rosariocolaianninsncom
*hone= 676277"11;1;
CM4 &S) &est South )uro*e
• Slides will 'e a,aila'le in 3MS/Sharenet
htt*s=//sharenetimsinsidenokiasiemensnetworkscom/4*en/(177!67"6
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