rtwp problem discussion

7/25/2019 RTWP Problem Discussion

1/12

lpkojihu2011-04-15, 02:30 PM

Dear colleagues,

We experiencing exceptionally high level or !"WP #easure#ents or #any cells in $ua%ei &M"' net%or()'uch level *-+5))))-5.#/ can not e explaine y regular intererence cause y #oile phones) "his is ane% &M"' net%or( %ith very lo% traic)

'pectru# analyer #easure#ents i not sho% any external intererence sources) "ypically #easure !"WP%ith spectru# analyer is aroun -110.#

vent #easure#ents through &M"' cell antenna sho%s -110.# level)

nly %hen !!& unit is in operation the #easure !"WP u#ps to -+0.#)

'M an &M"' net%or(s are ully separate an isolate, i)e) separate antennae use an they are spaceseparate an only single carrier use in &M"' - this exclues any source o 6nter#oulation cause)

"he only prole# that 6 can raise is a prole# %ith !!&s) "here are 7308 o cells are suering ro#constant high !"WP level an 08 o cell suering ro# pea( levels o !"WP)

Please, assist %ith possile solution) r you #ay (no% i so#e issues %ith ne% generation o the $ua%ei&M"' e9uip#ent)

.est regars

bindi2011-04-15, 03:31 PM

6 you have alreay chec(e %ith spectru# analyer an rule out external intererence, then it clearly loo(sli(e har%are issues) May e it %as a particular atch o aulty har%are *!!&M$;s etc/, or even

co##issioning ile #ay e)


2/12

sonerss2011-04-15, 0+:31 PM

$i

$ave you ever change the !!&== 6t loo(s li(e a $% prole#)) Maye you can control vs%r values each iers

.!

Dear colleagues,

We experiencing exceptionally high level or !"WP #easure#ents or #any cells in $ua%ei &M"' net%or()

'uch level *-+5))))-5.#/ can not e explaine y regular intererence cause y #oile phones) "his is ane% &M"' net%or( %ith very lo% traic)'pectru# analyer #easure#ents i not sho% any external intererence sources) "ypically #easure !"WP%ith spectru# analyer is aroun -110.#



'M an &M"' net%or(s are ully separate an isolate, i)e) separate antennae use an they are space

separate an only single carrier use in &M"' - this exclues any source o 6nter#oulation cause)


Please, assist %ith possile solution) r you #ay (no% i so#e issues %ith ne% generation o the $ua%ei&M"' e9uip#ent)

.est regars

patek1968

2011-04-1, 0A:15 PM!"WP is cause y aulty har%are or loose cales that %erenBt properly ter#inate))i its $W you can

chec( in #2000 or the !"WP value an thereore can aress this to their PM))

danikd2011-04-1A, 02:05 PM

We have a si#ilar prole# in our $ua%ei net%or())))%e coul not not in any external intererence) "hehigh !"WP appears only %hen !!& connecte to the antenna) !!& replace#ent i not solve the prole#,even &> re9uency change i not sho% i#prove#ent)

;ny thoughts aout !!& peror#ance= ;ny troule tic(ets open=$ua%ei tol us ust install ilters, ut 6 o not unerstan ho% it can solve a prole#, since nothing appearson &> channel in the air)

Dear colleagues,

We experiencing exceptionally high level or !"WP #easure#ents or #any cells in $ua%ei &M"' net%or()

'uch level *-+5))))-5.#/ can not e explaine y regular intererence cause y #oile phones) "his is ane% &M"' net%or( %ith very lo% traic)




'M an &M"' net%or(s are ully separate an isolate, i)e) separate antennae use an they are space

separate an only single carrier use in &M"' - this exclues any source o 6nter#oulation cause)


3/12


Please, assist %ith possile solution) r you #ay (no% i so#e issues %ith ne% generation o the $ua%ei

&M"' e9uip#ent)

.est regars

soodlhor2011-04-1A, 05:24 PM

6 li(e this, %e can try to shut o%n 'M cell or testing)

"he possile cause is the re9uency o 'M carry, "his generate inter#oulation in you !eception o &M"')"he receiver are superheteroine circuit, an o%n convertion use a #utilplier, the #ultiplier generates

har#onics that all in the uplin( ts


4/12

can you please, elaorate on this issue= %hat to chec( on ;'')

"his is ue to poor antennaBs #aterial) !e#e#er to uy goo antenna: Gatherein, ;nre% or even "onguy)

"his is ue to poor antennaBs #aterial) !e#e#er to uy goo antenna: Gatherein, ;nre% or even "onguy)


5/12

entorresa2011-04-24, 03:55 ;M

6n one cell site %ith high !"WP connect the spectru# analyer to the cell site antena)


6/12

in antenna acing ol irection)6 itBs $% issue, ater cale s%ap, the issue %ill also get s%ape) i)e it %ill report pseuo intererance ro#

ne% irection also)

;lso see i the !"WP is constant through out) 6 yes, it coul e hs issue)

!Bs

@i#o

$hilippe2011-0-14, 0A:5E ;M


7/12

6n case o !"WP occurence in the &M"' net%or( chec(ing the syste# against inter#oulation shoul eone in the irst step) "he test is very si#ple - uring #onitoring !"WP in the oserve cell set the

#axi#u# tx po%er in that cell) When !"WP rises as tx po%er rises inter#oulation is suspecte) 6t can eeither internal or external ut itBs si#ple to ierentiate it - external intererence reacts to the tilt change)))

Cro# #y experience the #ost cases o internal inter#oulation is ue to i#proper connector ixing -corroe surace acts as a #ixer) 6Bve also oun several cases o external inter#oulation - 1008 o the#%ere 'M oran Do% an Meiu# #easures o !"WP) $o%ever, the #axi#u# an #ini#u# values arereco##ene only as auxiliary or reerence, since they #ay have een cause y a pea( o access, or even

een orce to have a #o#entary value ue to so#e algorith# i)e))

"hus, the value that helps us, an has the #ost accurate inor#ation is the sa#e Mean !"WP

Cor cases in %hich cell has t%o carriers, the ierence et%een the# !"WP shoul not excee E .)


8/12

.ase on these typical values, #ost venors have an alar#: !"WP FIery $igh) F

What to o in case o prole#s=

We have seen that !"WP can cause peror#ance egraation, #ainly


9/12

'uch level *-+5))))-5.#/ can not e explaine y regular intererence cause y #oile phones) "his is ane% &M"' net%or( %ith very lo% traic)




'M an &M"' net%or(s are ully separate an isolate, i)e) separate antennae use an they are spaceseparate an only single carrier use in &M"' - this exclues any source o 6nter#oulation cause)


Please, assist %ith possile solution) r you #ay (no% i so#e issues %ith ne% generation o the $ua%ei

&M"' e9uip#ent)

.est regars

%ljunaibi

2012-01-04, 11:4A ;M

6tBs relate to the har%are )) !!&i you are using active syste#, then try to relevel *retune/ the active syste# ase on accurate P !>< retrans#ission rate an even so#e !! po%er causing uncontrolle &> intererence)

;ter !@< %as setup to elay !>, !"WP issue %as solve)

'rank$intor2013-04-25, 04:51 ;M

$o% to chec( !@< para#eter or !!;?Q'W6"


12/12

$o%ever !@< %as setup to release !> even ater reception o irst !!< !>;'

brianm2013-11-0+, 10:24 PM

What is the i#pact on site peror#ance or user experience o very lo% ;verage !"WP o say -110#

giegala2013-11-0+, 11:42 PM

'uch lo% value sho%s that !C signal is too #uch attenuate) 6t irectly reuces cell raius)

6t coul also #ean lin( isalance, %hen &> attenuation is #isconigure) 6n that case, & coul e ca#pingon cell in ile #oe, ho%ever %ill ail to access *setup !!

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