Guidelines for WiMAX NW

7/25/2019 Guidelines for WiMAX NW

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Guidelines for maintenance routines in the WiMAX network

BHARAT SANCHAR NIGAM

LIMITED

Guidelines for Maintainence of WiMAX netwotk

(Version I)

Issued on 26-02-2010- by N/W Operation CDM/WiM! "e##

$or Interna# %se On#y

Network Operations-CDMA/WiMAX2


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Contents &a'e No

C*ION (+or Core e#e,ents)

I,portant outines. o's and e"ords -

Dai#y outines -

Wee#y outines 3 4a" up - 6

Mont5#y outines -

7uarter#y outines 3Ot5er outines 3 &ro"edures - 8

C*ION-4 (+or $ Net9or e#e,ents)

o's 3 e"ords 3 re'u#ar ,antenan"e - :

Dai#y outines - 10

Wee#y outines - 10

Mont5#y outines - 11

;ear#y outines - 12

NN!% I to V - 10 outines

1>1 I,portant routines? !he followin"s are important routines to (e ensured on dail#weekl# and monthl# (asis as per schedule stated in this section9

:*:*: Dump and o" 8andlin"

:*:*2 4#stem 5ackup Dump 8andlin"

:*:* !ransaction o" 8andlin"

:*:*; ifeline !est

1>2 o's and e"ords?


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:*2*; Vendor er@i"e eAuest re"ord? A list of =43s sent to the)endor who has supplied the e+uipment with details of date sentdate answered outcome satisfactor# or not etc*

1>2> o+t9are e"ord?A list of all software loaded on e'chan"e )ersionup"rades date of effect and information realtin" to its license and

e'pir# date should (e maintained for each of the network element*

1>2>6 pare-part ist?A list of spares shall (e a)aila(le at the switch with useof spares dates reason etc* !he mo)ement of spares sent to therepairer or )endor will also (e recorded with date return time andsatisfactor# work*

1>2> Ne9 pp#i"ation 3 &at"5 Corre"tion o'? 3ecord of the newapplications or patches added to the switch includin" datesreasons etc* should (e recorded*

1>2>8 #ar, ist? !he print outs or softcop# of all alarms should (e

maintained for months*

1>2>: estart o'?A record of all restarts ,nput Output Group and Central0rocessor1 (oth ordered and automatic with cause needs to (ekept in switch room so as to assess performance of the switch*

4ee 6ormat Anne'ure ,,,1*Restart Log.xls

1> Dai#y outines

1>1 Mornin' $i#e? 3un the dail# command file for checkin" the s#stemalarms s#stem status etc* 4ufficient time needs to (e allotted for carefulanal#sis of the results* !his important practice will ensure that thetechnicians remain up to date with status of the switch*

1>2 #ar, ist? !he Alarm list should (e checked re"ularl#* 4taff shouldensure that all alarms are remedied within the defined accepta(le timelimits 2;8rs1 and are escalated promptl# to the concerned e'ecuti)e*

1>< C5e" o+ IO *er,ina#s? Access !erminals and their stora"e memor#space 0rinters and paper in them M!/OD De)ices etc need to (echecked for keepin" them fit for use*

1> Veri+y *e,perature / Bu,idity? Check the switch room temperature andhumidit#* ,f a(normal ur"ent action is re+uired to (e taken*

1> Duty 5i+t Bando@er? Generall# a lar"e o)erlap (etween shifts ensuresthere is sufficient communication (etween the staff* ,ncomin" staff shouldalso (e (riefed on pro(lems which were cleared as these ma# ha)e atendenc# to recur* A re"ister shall (e maintained for this*

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1> Wee#y routines

1>>1 Wee#y $i#e? Check Alarm lo" restart or application error status ofcorrection application software file con"estion C0 and 30 error

records status of different modules Group switch Network4#nchroni?ation Clock reference etc*

1>>2 a@e *ransa"tion o'?All lo"s relatin" to )arious transaction andacti)ities should (e sa)ed*

1>>< &o9er? Check the rectifier as well as in)erter load measurementand maintain a record* !he fitness with re"ard to auto-startli"htin" )entilation and load on 7n"ine Alternators should (echecked*

1>> yste, 4a"up?-

=enera# ba"up "5edu#e9

a1 4#stem (ackup should (e taken for all N7s once a da#prefera(l# durin" slack hours*

(1 !he (ackup should (e checked at re"ular inter)als forcompleteness of data . a(ilit# of (ackup to restore thes#stem* !he stand(# mode of the network elementcould (e used for the purpose*

c1 Assessment of time likel# to (e taken to restore thes#stem should (e carried out once in si' months*

d1 !here should (e multiple sets of (ackup with proper

date and time and also the name of network elementwritten on each of them* !hese sets ma# (e kept atlocations easil# accessi(le and well known to theconcerned staff*

e1 Our own staff should take the (ackup and do a(o)estated acti)ities* ,f need (e assistance of )endor in theform of super)ision ma# (e sou"ht in the (e"innin" tillthe time our staff (ecomes confident to (e a(le tohandle the situation independentl#*

f1 5ackup must (e taken (efore . after e)er#confi"urational /software )ersion chan"e*

1>>>1 CD ba"up 3 r"5i@in'?

With the passa"e of time utilit# of data "ets reduced and hence it isnecessar# to archi)e the data whether residin" in network elementser)ers 0Cs or other nodes at re"ular inter)als else the performanceof s#stems deteriorates* Also (ackup and restoration takes lon"er timeleadin" to lon"er duration of network outa"e*

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a1 3aw CD3s file (e#ond four months should (e archi)ed*(1 3aw CD3s (e#ond si' months to (e sa)ed in separate

ser)er and archi)ed from the main s#stem as well asfrom the mediation*

c1 3aw CD3s at each 7M4 location need to (e preser)edonl# upto si' months in a de)ice like optical disc etc*

1> Mont5#y routines

At monthl# maintenance inter)al the followin" should (e checkedin addition to the weekl# maintenance checkpoints*

1>>1 o+t9are Contro#? Check for all corrections and confirmation ofacti)ations*

1>>2 Veri+i"ation o+ ubs"riber er@i"es? Check that all su(scri(erser)ices are workin" and

1>>< Check of 4uper)ision Data9 Check all super)ision parameters i*e

Confi"uration parameters* 0erformance parameters* Chan"e orload the parameters if necessar# accordin" to the chan"edre+uirements* =erif# that super)ision is acti)e and that it is set toreasona(le )alues*

1>> C5e" o+ outin' in+or,ation?should (e checked for all routes

1>> C5e" o+ 4atteries? Check the (atteries e*"* cleanin" andleaka"e etc*

1>>6 C5e" o+ BD Content? =erif# store allocation free space on 8Ddri)es and delete/ archi)e old files* 4ame action should (e takenfor 0Cs also*

1>> C5e" #ar,s? Check fitness of alarm panel aalarm interfaces7'ternal alarms software records data maskin" etc*

1>>8 ir-"onditionin' 3 /? 3e)iew of capacit# sufficienc# ser)icin"due etc*

1>>: eports? All !raffic related parameters are processed for monthl#reports* 4pecial attention and anal#sis is re+uired on speed rateco)era"e patch related complaints 5illin" Complaints causes forser)ice pro)isionin" related complaints etc*

1>>10 Coordination ,eetin's? Coordination meetin" with the officers in-char"e of 5road(and media and other concerned officers should(e con)ened (# the officer in-char"e of 7M4*

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1>6 7uarter#y routines

At a three-month maintenance inter)al the followin" should (e checkedin addition to the weekl# and monthl# maintenance checkpoints*

1>6>1 C& oad Measure,ent? C0 load 0rocessor oad1 measurement

results to (e collected and anal#sed*

1>6>2 C5e" Consu,ab#e / pares / In@entories? A ne"lected sparepart store can escalate the emer"enc# situation and hu"e loss tothe or"ani?ation hence thorou"h check and control is necessar#*

1> Ot5er outines and &ro"edures

1>>1 pare-part outines

!here should (e a re"ular check to ensure the a)aila(ilit# of

sufficient spares and consuma(les to ser)ice the switch*

A list of spares should (e a)aila(le at the core network sites

A record of spare e+uipment a)aila(le or sent for repair1

should (e a)aila(le in the core network sites*

1>>2 $#o9 C5arts? 6low charts indicatin" actions re+uired to (e takenin case of an# anticipated failure of each element speciall#7M4A4N8AAAA ma# (e prepared displa#ed and circulatedamon" all concerned staff e)er# #ear*

art5 esistan"e? ,t needs to (e measured once in si' monthsand record should (e maintained*

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C*ION-4

!his section is meant for O.M of 36network elements*

2>1 o's and e"ords

o" (ook has to (e maintained at each and e)er# 5!4 site*

2*:*: Dail# o" for all acti)ities at 5!4 site includin" the outa"e

2*:*2 0ower . 7n"ine Alternator run lo" (ook

2*:* 4pare-part list in each di)isional office under D7 WiMAX1

2*:*; Complaint re"ister in the office of D7 WiMAX1 for networkrelated pro(lems

2>2 e'u#ar Maintenan"e outinesWhene)er )isitin" a 5!4 site check the followin" points to ensurethat e)er#thin" is in order9

Check for an# fault in the unit or an# other alarms*

No )isual dama"e to the e+uipment or site room is e)ident*

!he wa)e"uides and connectors are fi'ed propoerl#

Air conditioners are functionin" correctl#* !here is no leaka"e of

air-conditioned air throu"h door window or wa)e"uideopenin"s*

!he air inlet / filters to the ca(inet are clean*

Check for an# surroundin" acti)ities or chan"es close to the site

that ma# affect the performance of the s#stem or safet# of thee+uipment*

,ndoor li"ht is workin" . ,ndoor emer"enc# li"ht is workin"*

All modules of 4M04 power plant are workin" properl# and load

is (ein" shared (# all*

Check (ack-up (atteries for corrosion and leaka"e*

,n addition make sure that an# other local routines are checked*

Check the run time of 7n"ine Alternator and compare it with the

manufacturers recommended ser)ice inter)al re"ardin" the runtime and ensure re"ular ser)ice*

!he oil in the 7n"ine Alternator should (e checked with the

dipstick to ensure its sufficient le)el and also its usefulness*

7arth )alue has (een measured once in e)er# si' months and

the same is displa#ed*

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Na)i"ation li"ht on the tower is operational and condition of

tower with re"ard to its paintin" etc is O cells under each of the cate"ories (e anal#sed forcorrecti)e action so that these cells do not continue to (e worstfi)e*

4ome of the causes responsi(le for Drop 3ate are9

o 5ad 4i"nal stren"th

o ,mproper ink (ud"et

o ,ntereference Co-channel Ad&acent-Channel or from

other operators etc*1

o 5andwidth Con"estion

o Nei"h(our cell not defined

o Cell parameters are not optimised

o 4u(scri(er reasons

!hese reasons could (e ascertained (# checkin" parameters

of cells in 7M4 Client/M2$$$ and (# conductin" Dri)e !est inand around the (ad performin" 5!4 sectors*

2> Wee#y outines

Weekl# reports should (e made (# the O.M personnal in char"eof 544 to the Mana"er DGM . GM1* !he reports should contain9

Ma&or distur(ances Cell outa"e if an# (e#ond : hour1

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!raffic reports on network performance alread# defined in the

Fualit# of 4er)ice format*

,mplementation of O.M routines as per instruction manual

supplied (# the e+uipment )endors*

A (rief summar# detailin" what work has (een completed

durin" the week and what chan"es in performance ha)e (eenrecorded*

2> Mont5#y outines

Climate control i*e* air conditioners are functionin" correctl#*

!here is no leaka"e of air-conditioned air throu"h door windowor wa)e"uide openin"s*

!he air inlet / filters to the ca(inet are clean*

!he oil in the 7n"ine Alternator should (e checked with the

dipstick to ensure sufficient le)el and also its usefulness*

6unctionin" of all alarms is tested for ser)ice worthiness*

A printout of all cell data should (e made once in e)er# month

and check for false/ e'tra data should (e carried out*

Weak cell of (atteries to (e identified and remedial action

should (e taken*

2>6 Mont5#y eports

Monthl# reports should (e prepared for the Circle . CorporateOffice Mana"ement re)iew* !he report should contain9

Ma&or interruptions in 5!4 Cell outa"e for more than one hour1

Network Con"estion . Fualit# of 4er)ice *

A (rief summar# a(out the work carried out on the network

durin" the month includin" details a(out network e'pansion .Dri)e !est*

2> 7uarter#y outines

!he followin" should (e checked once in a +uarter in addition tothe re"ular dail# and weekl# check-ups9-

Carr# out (atter# (ack-up )olta"e test to ascertain whether the(atteries are holdin" their full char"e* !he instructions )ide letterNo* -:/2$$-08M dated ;-:-2$$> Cop# at Anne'ure-,=1

should (e followed in this rea"rd*

Doc2.doc

Check the site temperature and humidit# see O.M manual

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supplied (# the )endors*

pdation of data in the plannin" tool (ased on results of Dri)e

!ests durin" the +uarter*

Cell 0lannin" and 36 0lannin" should (e re)iewed for an#

possi(le error or chan"e in situation due to addition deletion orchan"e in confi"uration of 5!4 in the network*

An# additional 5!4 should (e put in ser)ice onl# after A/! and

special monitorin" on1throu"h put in all cells in the 5!4area isnecessar# so as to (e sure that it is not impactin" theperformance of an# other sector/ cell ad)ersel#*

2>8 Ba#+-year#y outines

0ower measurement at the top of the 5!4 rack for all 4ector /

Carriers*

!he wa)e"uides and connectors are fi'ed propoerl#*

=4W3 should (e measured once in si' months for e)er# 5!4

and its )alue should (e maintained within the limit H:*1 for allwa)e"uides*

7arth resistance should (e measured for all 5!4 and other

WiMAX network element locations* !he )alue of earthresistance in respect of DC earth !ower earth and AC earthshould (e H2 ohm* !he detailed instructions ha)e alread# (eencirculated (# M4 Cell of corporate office letter No* @-/ 2$$;-08M dated 2:--2$$; cop# a)aila(le as Anne'ure-=1*

Anne'ure = has to (e re)iewed*

Doc3.doc

,t should (e checked if there is an# leaka"e for A/C as the same

increases load on the plant and also power consumption* ,t alsoneeds to seen that penalt# is not (ein" imposed (# 7lectrict#5oards on account of power factor o)er consumption etc*

2>:Dri@e *est

Dri)e test is a )er# important acti)it# and hence should (e carried

out at re"ular inter)als*

eAuire,ents? 6ollowin"s should (e ensured for makin" Dri)e!est a real possi(le routine acti)it#9

i1 Most of the staff posted in the 544 O.M should (e "i)enclass room as well as on the &o( trainin" to carr# out Dri)etest*

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ii1 4ufficient num(er of Dri)e test tools should (e a)aila(le soas to carr# out this acti)it# as per re+uirement defined(elow* ,t would (e appropriate to ha)e independent dri)etest tool for each of the D7 5441* !eam of two personsOne with Dri)e !ester and other with OMC-31 could (eassi"ned to e'clusi)el# for this &o( in each of the 54C/ D7

5441 areas*

iii1 Di"ital maps with network plannin" . 36 plannin" datashould (e a)aila(le in respect of each of the cities co)ered*

"5edu#e9 Dri)e !est should (e performed9

Whene)er an# new 5!4 is inte"rated in the network

,f there is poor performance on account of throu"h put*

7'cessi)e 8ando)ers*

,t is desira(le to ha)e re"ular dri)e test once in e)er# three

months in all those cities where multiple 5!4s are workin"*,t is necessar# to ha)e dri)e test once in e)er# si' months ineach of the cities co)erin" all important localities/ (usinesscenters/ 8i"hwa#s/ 3ail-routes*

2>10 *est +ter C5an'es in net9or

After ma&or chan"es in the switch e*"* softwareup"radation ma&or e'tensions reconfi"ration of radio networkor anal#sis puttin" new nodes into ser)ice and after all ma&orchan"es of data the followin" acti)ities should take place*

4#stem (ackup drump

!raffic cases should (e tested

8and o)er test

Check of 4tastical data

2>11 pare-part outines

!here should (e a re"ular check to ensure the a)aila(ilit#

of sufficient spares and consuma(les to ser)ice the 5!4sites*

A list of spares should (e a)aila(le at the WiMAX inchar"e*A record of spare e+uipment replaced in the field a)aila(leat site or sent for repair should (e kept at 5!4 sites*

At least one spare 5!4 e+uipment alon" with radio link

should (e kept read# in each of the circles to meet outunforeseen de)elopments like festi)als meetin"s or naturalcalamities*

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NN!%-I9 7)ent o" 3e"ister

4/N

Date . !imeof

6ault/7)entOccurred

Details

of6ault

DocketNum(er

Docket

5ookedto

Action!aken

onDocket

Date .!imeof

3ectificationof

6ault/7)ent

3emark

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4/N

Date .!ime ofComplai

nt3ecei)e

d

Complaintrecei)edfrom Call

Centre/Cust

omer

ContactNum(er of

Complainin"Customer if

complaint

recei)ed fromcustomer1

Detailsof

Complaint

Complaint related

to36/4witch/Fualit

# etc*1

Action!aken

onCompl

aint

Date.!ime

of3ectification of

Complaint

4ta

NN!%-II9 Customer Complaint 3ecord

NN!%-III9 3estart o" (ook

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4/N

Date .!ime of7+uipment

restart

3easonto

3estart4#stem/7+uipm

ent

,mpact of4#stem/7+

uipment3estart

Weatherpro(lem

sol)ed due tos#stem

restartMar"i

nall#/6ull#1

Date .!ime of4#stemNormali

sed

Durationfor which4er)icesaffecteddue to

restart

0riorpermission taken to

restarts#stemI

es/No1

3erk

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Network Operations-CDMA/WiMAX:


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Network Operations-CDMA/WiMAX:B


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Guidelines for WiMAX NW

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