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7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
1/15
S
HUAWEI TECHNOLOGIES CO., LTD.
TE PRACH Optimization (eNodeB Clu
Preliminary Report 4/27/2015
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
During random access, he eNode! send rancon"guraion o a UE. The UE sends he rand
#ream$%e o he eNode! o iniiae a randomThe random access #ream$%e is a $urs, whic(c%ic #re") *C+, a #ream$%e se&uence, andhe ime domain and si) resource $%oc-s in domain.
+ream$%e se&uences are generaed 'rom c(cado/0Chu *C se&uences. The %ogica% indese&uence ranges 'rom 1 o 234.
Each ce%% can $e con"gured wih 56 #ream$56 #ream$%e se&uences canno $e generaeC se&uence, he( are o$ained 'rom su$se&se&uences.
The %ogica% inde) o' a C se&uence and he shi' are indicaed $( he #rach0Con"gnde)
num$er o' c(c%ic shi's is deermined $( he on he ce%% (#e and ce%% radius.
Conenion0$ased random access#rocedure
LTE Random Access Procedure (Contention-ased)
How i wor-s
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Root !e"uence Plannin#(Lo$ !peed Cell)+ream$%e se&uences are generaed 'rom c(c%ic shi's o' ado/0Chu *C se&uences. The a C se&uence* 'orma 103ranges 'rom 1 o 234. Ncs indicae he c(c%ic shi's.
configuration value configuration value
0 0 8 46
1 13 9 59
2 15 10 76
3 18 11 93
4 22 12 119
5 26 13 167
6 32 14 279
7 38 15 419
How i wor-s
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
%n&luence Anal'sis o& Root !e"uence con&lict9or e)am#%e, i' roo se&uence o' ce%% A and ce%% ! is %i-e $e%ow, and ce%% as andha7e he o7er%a##ing co7erage area, hen con:ic e)iss;
Root Sequence Index
Cell A 0 1 2 3 4 5 6
Cell b 4 5 6 7 8 9 10
Due o
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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Actiit' *escription
+age =
Wih he roose&uence reuse chec-, 34> ce%%s roose&uence con"guraion is suggesed
eNode! C%user ce%% %is
@O+ E)ecuion
Week Date ! "#$ "#$
1723-April00:00H
eNodeB Cluster 1LTE PACH
!pti"i#$tio%H&
LTE +
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+P% ,onitorin#
+age 5
MOP Type Units KPI Name Before After D
LTEPRACH
Optimization(eNodeB Cluster 1)
Accesibilit !
RRC "etup "uccess Rate 99%972 99%966
E#RAB "etup "uccess Rate 99%973 99%970
Retainabilit ! Call $rop Rate 0%010 0%043
"ob'l't( !%ntra#&re'uenc Handoer Out "uccess
Rate99%991 99%988
C"B !success rate o& success&ul end to end
data C"B 99%943 99%945
Tra&&ic
*bps aera+e do,nlin- t.rou+.put per cell 16%955 17%032
/B $L Tra&&ic 0olume 3368%8863830%55
11
*oad
*a Actie 2ser 4093%5004199%50
0
Ta$%e $e%ow show he com#arison o' genera% +I $eween he second wee- *6 da(s, 6B5he @O+ and a'er he @O+*6 da(s, 6B836B85* +I daa on +
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age 4
.> a%% he imeF
+P% ,onitorin#-RRC !!R
8611111
8=11111
8511111
8411111
8211111
8>11111
3111111
311111
3811111
C SS '()
L
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age 2
E
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age >
Ca%% Dro#
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age 1
Inra09re& HO S< -ee# sa$%eF
+I @onioring0 Inra09re& HO S11
>81
Tr$.c /ser
@a) Aci7e User L.Trac.User.A7g
7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age 3
DL rac and a7erage DL hrough#u ha7e no $ig di/erenceF
+I @onioring0DL Trac Through#u
1
=11
111
=11
8111
8=11
3111
3=116111
6=11
6.=
=
=.=
5
5.=
4
4.=2
2.=
Av Cell *L Tp 'it4s)
DL Trac Jo%ume*G$is Ce%% DL ThKH*@!Bs
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age 6
A'er he @O+ e)ecued on 6B83, we can "nd ha L.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Conclusion
+age =
There is no negai7e im#ac 'rom LTE +