LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015

7/26/2019 LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015

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HUAWEI TECHNOLOGIES CO., LTD.

TE PRACH Optimization (eNodeB Clu

Preliminary Report 4/27/2015


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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


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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

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%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


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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 +


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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


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E


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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential +age >

Ca%% Dro#


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Inra09re& HO S< -ee# sa$%eF

+I @onioring0 Inra09re& HO S11

>81

Tr$.c /ser

@a) Aci7e User L.Trac.User.A7g


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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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A'er he @O+ e)ecued on 6B83, we can "nd ha L.


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Conclusion

+age =

There is no negai7e im#ac 'rom LTE +

LTE PRACH Optimization(ENodeB Cluster 1) Preliminary Report 04272015

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