sdcch+blockdropcase

8/10/2019 SDCCH+BlockDropcase

http://slidepdf.com/reader/full/sdcchblockdropcase 1/8

NOKIA CONFIDENTIAL 1 (8)

Wireless Network Performane!1"11"1#

C$ek on t$e interferene le%els in t$e ell

Is &F or &F Ol' t$e

main omonent

C$ek Dro *reak'own reort an' i'entif+ main

omonent of 'ros

1,

Are more t$an

-./-0 of alls o2t of

3an' 1

1,

T$e ell is s2fferin4 from 52alit+ ro3lems '2e to

interferene

One interferene so2re $as 3een

i'entifie' t$en a ret2ne an'6or

reonfi42ration an sol%e t$e

ro3lem

17

DCC9 Droo2t Tro23le $ootin4 Proess

No

:es

No

:es

P4 1-

P4 1-

;etria

Cell Dail+ Droo2ts *reak'own

;etria

&aw Interferene



NOKIA CONFIDENTIAL < (8)


1,C$ek w$ere t$e DCC96s are 'efine' (T&= an'

T)> if t$ere is more t$an 1 DCC9> w$et$er

'efine' on & fre52en+ if I?O is 2se' et"

Are DCC9 'efine' on

& T&=

DCC9 s$o2l' not 3e 'efine'

on & T&=> re'efine an'

monitor

C$ek on t$e a%era4e 'ownlink si4nal stren4t$ %s t$e

a%era4e timin4 a'%ane for e%i'ene of o%era4e

ro3lems

Is 3a' o%era4e a

ossi3ilit+ for all

ro3lems

A new site or reonfi42ration of e@istin4

sites ma+ $el si4nal le%el an' 52alit+

ro3lems assoiate' wit$ oor

o%era4e

1#

No

;etria

Weekl+ &@52al 2mmar+

No

:es

:es

P4 18

P4 <!

N;<!!!

;;L E&O omman'



NOKIA CONFIDENTIAL , (8)


&2n an o3ser%ation to o3tain

f2rt$er information

1#C$ek $ar'ware alarms for an+ $ar'ware ro3lems

t$at ma+ 3e affetin4 t$e T&=> s2$ as fa2lt+

timeslot et"

Are t$ere an+

$ar'ware alarms

C$ek t$e man2al for stes to

sol%e t$e ro3lem

Do &F Ol' an'6or

Aint Ol' ontri32te to

t$e 'ro o2t rate

C$ek on t$ose el ls most likel+ to 3e 'irete' retr+

nei4$3o2rs 3+ anal+sin4 a o%era4e lot or 3+ 'ri%e

trial res2lts

Is a o%era4e

ro3lem a2sin4

$an'o%er fail2res

1.

1.

N;<!!!

Alarm men2 for site

:es

:es

No

No

No:es

P4 1-

P4 <1

P4 <!



NOKIA CONFIDENTIAL # (8)


Are A3is 'ro(o2ts a

om(onent)1.

C$ek $ar'ware alarms for an+ $ar'ware (ro3lems

t$at ma+ 3e affetin4 t$e site

Are t$ere an+

$ar'ware alarms)

C$ek t$e man2al for ste(s to

sol%e t$e (ro3lem

10

17

No

P4 18

P4 <!

P4 <<

:es

No

:es

No

N;<!!!

Alarm men2 for site



NOKIA CONFIDENTIAL . (8)


C$ek for on4estion on t$e DCC9> $ow man+

DCC9s are 'efine' for t$e n2m3er of TC9 n'

w$et$er t$e ell is on a LA 3o2n'ar+

10

Are t$ere eno24$

DCC9 for TC9s

'efine'

Is t$e ell on a LA

3o2n'ar+

Define e@tra DCC9 after

ons2ltation wit$ DBP on

'imensionin4

C$ek on t$e n2m3er of L?

o2rin4 an' eit$er $an4e3o2n'ar+ or 'efine anot$er

DCC9

Follow t$e stes o2tline' in t$e TC9 'roo2t

tro23le s$ootin4 flow $art startin4 from #>0>- an'

1< for ot$er a2ses of DCC9 'roo2t

P4 <1

:es

No

:es



NOKIA CONFIDENTIAL 7 (8)


One all 'efine' T&=s are

oerational t$en monitor

3lokin4 to ens2re OK

I'entif+ t$e a2se 3+ $ekin4 t$e alarm stat2s an'

talkin4 to Oerational staff

Are an+ T&=s

3loke'

C$ek on t$e n2m3er of T&=s 'efine' a4ainst t$ose

t$at are oerational> lookin4 for 3loke' T&=s

I'entif+ t$e worst 3lokin4 ells an' start in%esti4ation

from t$e worst> notin4 eseiall+ t$ose t$at $a%e $i4$

D& 3lokin4

C$ek t$e 3lokin4 statistis an' i'entif+ t$ose ells

wit$ 1! 3lokin4(raw)

A

*lokin4 In%esti4ation Proess

:es

N;<!!!

Alarm men2 for site

P4 <#

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