45977861 GSM Network Planning and Optimization Single Site Verification Work Guidebook V1 0

8/19/2019 45977861 GSM Network Planning and Optimization Single Site Verification Work Guidebook V1 0

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Internal Use Only▲

GSM Network Planning and Optimization

Single Site Verification

Work Guideook

Version: V1.0

!eleased y GSM Network Planning and Optimization

"epartment of #ngineering Ser$ice "i$ision of %

This document contains proprietary information of ZTE Corporation and is not to be disclosed or used

except in accordance with applicable agreements.


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GSM Network Planning and Optimization Work

Guideook

Version introduction'

Version ate !riter "ssessor Translator "mendment records

V1.0 #00$%0&%#1 'iang (i Chang

)ai*ie+ (u

,iyun+ -u

-haoli

,u (an This document clarifies its

relationship with another

document named Hand-over

Standard of Project Installation

and Test of BSS and Network

Optimization in aspect of

general erification part. /t

emphasies that the erification

items can be ad*usted according

to the results of pro*ect uality

examination.




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Key words:

2-34 single site erification4 T4 C5T

Abstract:

This document introduces the tas6s of single site erification+ including the general test

flow for single site erification+ preparations for test+ purposes for different test items+

test methods+ and methods for problem analysis and problem handling. 7esides+ this

document also proides the standard for single site erification and the freuently%used

templates for a erification report.

Abbreviations:

--V：-ingle -ite Verification

T：rie Test

C5T：Call 5uality Test

8x,e：8eceie ,eel

8x5ual：8eceie 5uality

References:

Hand-over Standard of Project Installation and Test of BSS and Network Optimization

GSM P O !adio Network Test "ork G#ide$ook

GSM PO %rossed &ntenna %onnection Sol#tions

GSM PO Network Speec' (#alit) Pro$lems Sol#tions

*+,GP!S !adio Network Optimization "ork G#ide$ook




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(ontents) O$er$iew***********************************************************************************************************************************************)

1.1 Terminologies and definitions...........................................................................................................1

1.# The significance of single site erification.......................................................................................1

1.9 utline...............................................................................................................................................#

+ &,e workflow of single site $erification*********************************************************************************************-

#.1 !or6flow...........................................................................................................................................;

#.# Explanations of the wor6flow...........................................................................................................;

. Preparation work for single site $erification*************************************************************************************/

9.1

9.#.9 ther preparations.................................................................................................................10

9.9 Chec6 the configuration of parameters...........................................................................................10

9.; Chec6 the site status........................................................................................................................11

- Verification test and analysis************************************************************************************************************)+

;.1 7asic erification.............................................................................................................................19

;.1.1


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4igure contents@igure 1-1 The position of single site erification in the whole pro*ect.................................................#

@igure 1-2 The outline of this document................................................................................................#

@igure 2-1 The wor6flow of single site erification................................................................................;

@igure 9%1 " figure of test routes for site erification in urban areas......................................................$

@igure 9%# " figure of test routes for site erification in suburban areas..............................................10

@igure ;%1 Chec6 the basic networ6 parameters of the site through system message 9........................1;

@igure ;%# Chec6 the C" list of the cell through system messge 1.......................................................1?

@igure ;%9 Test results of reersely connected sector of the site...........................................................1&

@igure ;%; Test results of reersely connected TC) antenna................................................................1>

&ale contentsTable 9%1 Calling methods which are freuently used by C- serice....................................................&

Table ;%1 The most common items of 2-3 single site erification.....................................................1#

Table ;%# -tatic power leel parameters................................................................................................##

Table ?%1 "cceptance standards for the most familiar chec6 items.......................................................90




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1 Overview1.1 Terminologies and definitions

-ingle site erification inoles with the test and erification of single site euipment

functions. The purpose is to ensure that the basic functions and radio performance of

each cell under the single site are at a normal operation state.

Asually+ the networ6 test enginner is in charge of single site erification. The tas6 is to

erify some basic functions of the testing cells through T and C5T+ including

coerage+ access+ calls+ and data downloading+ and so on. /f the functions of a site

perform well+ there will be a single site erification report+ which means an end of

erification. /f a site has some problems+ efforts should be made to analye the

problems and to ma6e some ad*ustments. Then+ there will be a erification report when

the functions perform well.

1.2 The significance of single site verification

-ingle site erification is at the first stage of networ6 optimiation for pro*ects li6e newradio networ6 construction+ networ6 capacity expansion+ and networ6 swap. Through

single site erification+ it is possible to identify a series of obious radio networ6

problems li6e access problems+ call drops+ and so on+ which are caused by euipment

performance or coerage problems. The purpose is to ensure that each site which has a

formal access to the networ6 can hae good serice performance and to aoid drastic

networ6 uality fluctuations when a new networ6 is constructed or the networ6

capacity is expanded.

-ingle site erification can help a networ6 optimiation engineer to familiarie himself with some information in the area+ for example+ radio enironment+ site distance+ and

so on+ which lays a solid foundation for cluster optimiation in the future.

The position of single site erification in the whole pro*ect is shown in figure 1%1.

-ingle site erification follows the stage of single site commissioning testBchec6. !hen

is is confirmed that each cell in the area has completed its single site erification+ the

single site erification of the area is completed+ and it is time to moe to the next stage+

that is+ cluster optimiation.


except in accordance with applicable agreements. 1


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@igure 1-1 The position of single site erification in the whole pro*ect

7esides+ since single site erification is the start of networ6 optimiation+ it should be

ensured that the single site pro*ectBcommissioning test stage has been successfully

completed and there are no obious problems left. The purpose for this confirmation is

to ma6e sure that single site erification can be smoothly carried out.

@or details of pro*ect optimiation ta6e%oer+ please refer to a guideboo6 called Hand-

over Standard of Project Installation and Test of BSS and Network Optimization.

1.3 Outline

The outline of this document is shown as follows:

@igure 1-2 The outline of this document

Chapter # clarifies the wor6flow of single site erification. 7esides+ it explains tas6s

for different procedures+ including preparations for the erification+ erification test+

and erification criteria and so on.

Chapter 9 introduces the preparation wor6 for single site erification.




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Chapter ; introduces the common erification items+ and it also clarifies what the

tesing methods are li6e and how the problems which occur during test are analyed.

Chapter ?+ = introduces respectiely the common criteria of test acceptance and the

output of a erification report+ which are releant to pro*ect erification.

The contents of the appendixes are as follows:

The appendixes consist of two parts: The first part is an existing template for

erification report+ which can be used at the wor6 field to write a report4 the second

part introduces TE3- erification test+ which is a freuently%used software+ and

3C8 data analysis guidance.




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2 The worflow of single site verification




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2.1 !orflow

@igure 2-3 The wor6flow of single site erification

2.2 "#$lanations of the worflow

7efore the networ6 optimiation team starts to do the single site erification+ it should

be ensured that pro*ect installation+ and commissioning test hae been completed+ and

3C8 has shown that site euipment wor6s properly.


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efine test methods: 3a6e it clear to the client about test methods and tas6s. @or

example+ ma6e it clear which test methods will be used together /dle D long call D


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3 %re$aration wor for single siteverification

3.1 %re$aration of tools

-ingle site erification is mainly completed through tests. Therefore+ before the

erification starts+ it is necessary to communicate with the client about the erification

methods+ including the testing system and tools to be chosen.

3a6e clear the testing system and testing handset

The freuently%used testing systems include TE3-+


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& G#ide$ook for How to se T+MS to %'eck E2


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7esides+ other information should also be confirmed+ including whether it is

fixed point test or drie test+ whether 2


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@igure 9%; " figure of test routes for site erification in urban areas

-uburban areas

Formally+ suburban sites refer to suburban sitesBrural sites. The aerage site distance of

the surrounding sites is among the range of 1－?Hm+ and there are only wide roads

around. The main features of test routes in surburban areas are as follows:

a. The test routes should coer the roads which are coered by different

sectors of the sites to be tested.

b. The test routes should reach the oerlapping areas of surrounding neighbor

cells so as to ensure that the actual coerage area of the site and its

handoer functions can be erified.

c. @or isolated sites+ the normal coerage area of the site should be got

through the test.

@igure @igure 9 %? shows a classic test routes for single site erification in suburban

areas:




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@igure 9%? " figure of test routes for site erification in suburban areas

3.2.3 Other $re$arations

7esides+ it is necessary to confirm the following items with the client:

2et the customied -/3 card for test from the client.

/f


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9. /t should be chec6ed whether the freuency points of each cellGs 7CC)+ and TC)

are configures as planned. /f freuency hopping is configured for TC)+ the

parameters related to freuency hopping should be chec6ed+ including 3"+

3"/+ )-F+ and so on. 7esides+ it should be confirmed whether T-C of each

channel is in consistent with 7CC.

;. /t should be chec6ed whether the neighbor cells of each cell are configured as

planned+ and whether the definition of external neighbor cells is correct.

?. /t should be chec6ed whether the channels of each cell are configured as planned+

especially the number of -CC) channels+ the uantity and locations of


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( )erification test and analysis-ingle site erification usually consists of the following items: 7asic erification+

erification of antenna and feeder connection+ downlin6 coerage leel+ downlin6 call

uality+ call functions+ handoer functions+ and


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To chec6 the uplin6 receied signal leel and uality.

Verification of


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Chec6 whether antenna is shooting the air or there is no mechanical downtilt at all

)oweer+ according to the plan+ there should be mechanical downtilt..

&,e $erification of radio parameters mainly aims to chec6 whether the contents of

system messages of testing handset at idle state are the same as those of planning data.

The purpose of this tas6 is to ensure that the 6ey system parameters of 3C8 are

configured correctly. "t the same time+ it might be found that 3< data and 3C8

data of 7-C are not consistent. The parameters to be chec6ed are as follows:

Chec6 whether the basic networ6 parameters are configured correctly+ for

example+ 3FC+ 3CC+ ,"C+ 8"C+ C/+ 7CC)+ 7-/C+ "ccess3in+ C8，T9#1#+

and so on.

-ystem message 9 can be opened through the test system to confirm whether the

contents there are the same as those of planning data. The following figure shows

the specific contents of the message:

@igure ;%= Chec6 the basic networ6 parameters of the site through system message 9

Chec6 whether C" list of the cell is configured correctly.

The C" list of the cell refers to all the freuency points configured on 7CC)s+

and TC)s+ which can be seen clearly in the descriptions of channels if system

messge 1 of test system is opened.




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@igure ;%& Chec6 the C" list of the cell through system messge 1

(.1.3 +ethods of $roblem analysis and $roblem solving

1. The main cause for engineering parameter problems is due to the fact that the

pro*ect installation and commissioning are not carried out according to T--8

reports. /f there are problems with longitude or latitude+ it may be due to the

possibility that the data of engineering inestigation are not recorded correctly.

/f it is found that the longitude and latitude of the site are not correct+ it should

be confirmed that whether the site is the one to be erified through C/ data of

the cell. Then the longitude and latitude information of the site should be

confirmed with the planning staff. /f it is true that the information of longitude

and latitude is not correct+ it is suggested that the person responsible should tell

the planning staff the correct information+ and as6 them to update it.

/f there is a big difference between the actual antenna height and mechanical

downtilt and those of the planning data+ the problems should be reported to the

engineers to ma6e some corrections. The test should come after the corrections.

#. The main cause for wrong radio parameters is that the parameter configuration at

3C8 is not correct. /f so+ the suggestion is that staff responsible for 3C8

euipment room should ma6e some modifications before the test can start. /n

some cases+ though it does not occur freuently+ it is because that 3< data are

not consist with 3C8 data. /n this case+ this problem should be reported to 7--

engineers so as to as6 them to chec6 3< data and 3C8 data+ to reconfigure

the data+ and so on. nly after that+ can the test start.




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(.2 Antenna and feeder verification

(.2.1 %ur$ose

-ince the radio networ6 uality is closely related to the antenna and feeder system+

antenna and feeder erification is a necessary and fundamental part of site erification.

/f the antenna downtilt is not correct+ there will be some obious problems. n the

other hand+ if the antenna and feeder is connected in a reerse way+ there will be a

series of problems li6e call drop+ handoer failure+ and poor oice uality.

(.2.2 )erification methods

The actual coerage direction of each cellGs antenna can be chec6ed with a

compass.

/mport the engineering parameters including cell aimuth to the drie test

software+ that is+ the map.

/t should be ensured that there is at least one testing handset which is always at the

idle state so as to record the information on 7CC). !heneer 3- enters the main

coerage area of a sector+ the Cell / of the cell where 3- resides in should be

paid attention to. "t the same time+ it should be chec6ed whether the antenna

aimuth is consistent with the Cell /.

/f the coerage direction of each cellGs main lobe has a certain distance from the

site 100m+ another handset should be used to do call uality test so as to manage

to occupy TC) carrier. /t should be chec6ed whether there is a dramatic drop of

downlin6 leel when the handset occupies - channel and TC) channel during

the call.

"fter the drie test+ logfile should be imported to bac6ground anlysis software.

Then a thematic map will be produced on basis of 7CC) of the cell. !ith the

map+ it can be confirmed whether the Cell / of each cell is almost consistent

with the coerage direction of aimuth.


1. "ntenna aimuth is wrong

uring the test process+ it can be confirmed whether the actual main lobe direction of

each cell is consistent with the planning data 7esides+ a thematic map of 7CC)




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coerage can help to *udge whether the Cell / of each cell is almost consistent with

the coerage direction of aimuth.. /f there is an obious difference+ I90 degrees+

and there is no sign that 7CC)s of the cell are connected in a reerse way+ it means

that the direction of the antenna is not right.

/n this case+ the problem should be reported to the engineers so as to ma6e some

corrections.

#. "ntenna is connected in a reerse way

/f an antenna is connected in a reerse way+ the problem can still be further classified

into 9 categories. That is+ only 7CC) antenna is connected in a reerse way+ only TC)

antenna is connected in a reerse way+ or the whole sector is connected in a reerse

way.

@or reersely connected 7CC) antenna or reersely connected sector+ they can be

obsered through the special 7CC)%based map of the cell. "s shown in the following

figure+ there will be an oerlapping area between the actual coerage area and the

planning area in bothe cases.

@igure ;%> Test results of reersely connected sector of the site

/f TC) antenna is connected reersely+ 7CC) signals and TC) signals of the same cell

will not appear in the same sector. /f 9B; of the carrier freuency is assigned to a

subscriber when he originates the call+ it can be seen that the leel of occupied TC) is




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lower than that of occupied 7CC) obiously. The leel change during C5T will show

whether TC) antenna of the site is connected in a reerse way. )ere is a picture:

@igure ;%$ Test results of reersely connected TC) antenna

@or detailed chec6 procedures+ please refer to GSM PO %rossed &ntenna %onnection

Sol#tions.

This 6ind of problems should be reported to the engineers so as to as6 them to do somecorrections.

Fote: -ince the basic erification and antenna and feeder erification are both

fundamental and necessary part of the whole procedures+ it is suggested that these two

erification items shold be carried out before the follow%up specific erification wor6.

The purpose is to aoid unnecessary repetitie wor6.

(.3 )erification of call com$letion between the calling side and the

called side

(.3.1 %ur$ose

/n this erification test+ the calling side will originate a call and the called side will go

through a call completion test. The purpose is to chec6 the call functions of the site

between the calling side and the called side+ call connection time+ and the uality of

speech monologue+ call failure+ and cross tal6.




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(.3.2 )erification methods

C5T or T will be used to do the test. 7oth the handset of the calling side and the

handset of the called side will use the same drie test card. 7esides+ the handsets

will be used in the testing ehicle to do the test.

Asually+ short call will be used for the test. /t is suggested that the call duration

should be 1? seconds+ and the call interal should be 10 seconds.

The calling side should originate calls repetitiely+ and the called side should

answer more than 10 calls. 7esides+ it is better that different TC) carrier

freuencie are occupied. uring the test+ the engineer responsible should listen

carefully to confirm whether there are problems li6e monologue+ 7idirectional

silence+ cross tal6+ and so on.

" statistical counting of a series of indicators+ li6e call success rate+ call setup

time+ and so on. -ome special eents should be paid attention to and their causes

should be analyed+ for example+ originating call failure+ congestion+ excessie

long call setup time+ and the li6e.


uring the call uality testing+ if some cell has obious oice problems+ for example+

monologue+ 7idirectional silence+ and cross tal6+ the following items should be

chec6ed:

1. Chec6 whether there are unbalanced uplin6Bdownlin6 problems+ or seere

interferences4

#. Chec6 whether there are self%loop transmission lines4

9. Chec6 whether C/C codes of 3-C side and 7-C side match4

;. Chec6 whether there is something wrong with some time slot in the transmission

circuit4

?. Chec6 whether the configuration of time slots of the time%multiplexed euipment

is correct during shared E1 transmission4

=. Chec6 whether the problems are casued by 8TBE8T board failure or T/C board

failure4




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@or detailed chec6 procedures and methods+ please refer to GSM PO Network Speec'

(#alit) Pro$lems Sol#tions.

uring the test+ if it is found that the completion rate of some cell is low K$0L+ the

following items should be chec6ed:

1. /t should be chec6ed whether there are uplin6Bdownlin6 interferences. /f there are

strong uplin6Bdownlin6 interferences+ the calling side will hear beep sound when

he originates a call. Then+ 3- will return bac6 to the standby interface -

assignment fails.

Aplin6 interferences can be chec6ed through the statistical counting of

interference band. /f 7and ; M ? counts is found+ it means that there are seere

uplin6 interferences.

-ection Error: 8eference source not found is about downlin6 interferences+ and

this part can be used to *udge downlin6 interferences.

#. /t should be chec6ed whether the problem is caused by networ6 congestion. /f

both the calling side and the called side hae TC) congestion+ the networ6 side

will delier isconnect signaling+ and the cause alue is 9;.

@or those sites which are configured with a low capacity+ for example+ cells

configured with -# or lower+ it is common that the traffic channel will be uite

busy upon the commissioning of site. The result is that the call completion

between the calling side and the called side fails.

perators of 3C euipment room should be as6ed to chec6 the serice

occupancy status of all carrier freuenciesG time slots. The purpose is to chec6

whether there are still channels aailable+ or whether all the channels are

occupied.

9. /t should be chec6ed whether the problem is caused by the fact that the access

parameters are not correctly configured.

The parameters which may influence the call establishment should be chec6ed.

/f the actual configuration is not consistent with the principles+ it should be

modified according to the actual situation. The parameters to be chec6ed

include 8"C) minimum access leel+ 8xleN"ccN3in+ C7"+ C75+ and so on.

; /t should be chec6ed whether the problem is caused by cross%connected antenna

and feeder.This document contains proprietary information of ZTE Corporation and is not to be disclosed or used



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/f 7CC) antenna or TC) antenna is cross%connected+ the 8J leel will drop

dramatically when TC) is occupied by the handset in comparison to -CC).

/f the leel is too low+ TC) assignment may failure. The result is that there will

be problems with originating calls. @or the detailed chec6 procedures+ please

refer to Error: 8eference source not found section.

(.( )erification of received signal level

(.(.1 %ur$ose

Chec6 whether the downlin6 coerage leel is normal when 3- is at idle mode and

dedicated mode through the drie test @or example+ chec6 whether the leel is too low

in line%of%sight coerage area which is close to the cell or whether the leel of some

cell is lower than any other cell obiously.. The purpose is to chec6 whether the

following problems exist: Carrier freuency is abnormal+ antenna and feeder is

connected in a reerse way+ antenna downtiltBantenna directional angle is not

configured as planned+ there is obious oershooting coerage+ and so on.

(.(.2 )erification methods

The erification methods are clarified here:


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(.(.3 +ethods of $roblem analysis and $roblem solving

The statistical counting of the downlin6 leel and the 2/- map which shows the

downlin6 leel distribution will show whether there are obious downlin6 leel

coerage problems.

/f there are problems li6e wea6 downlin6 leel+ shrin6ed coerage+ the problems can be

analyed and chec6ed as follows the chec6 items listed here are to be carried out after

the basic erification:

1. Chec6 the surrounding enironment of the antenna of base station to see whether

there are obious obstacles around the antenna+ for example+ billboards+ high

buildings+ high trees+ glass walls and so on. /f there are such obstacles+ the antenna

aimuth or antenna height should be ad*usted so as to minimie their influence.

#. Chec6 whether the parameters which are releant to access are configured

correctly+ including 8xleN"ccessN3in+ C7"+ C75+ C8 and so on.

9. Communicate with engineers responsible for 3C euipment room and as6 them

to chec6 the configuration of data which are related to the output power of carrier

freuency. "ctually+ the static power leel


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@ull name -tatic power leel

Value range

The maximum output power+ the maximum output power %#d7+ the

maximum output power %;d7+ the maximum output power %=d7+ the

maximum output power %>d7+ the maximum output power %10d7+ the

maximum output power %1#d7+ the maximum output power D1.?d7+ the

maximum output power D1d7+ the maximum output power D0.?d7.

efault

alueThe maximum output power

;. Communicate with engineers responsible for 3C euipment room and as6 them

to chec6 the alarms of the site. Asually+ the alarms which indicate negatie impact

on site coerage are as follows: Carrier freuency alarms or CA related alarms+

for example+


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attention should be paid to 8x5ualN-ub of 7CC) carrier freuency and TC)

carrier freuency+ and CB/ at conersation state. 7esides+ it should be aoided that

the downlin6 leel is too low at conersation state.

"fter the test+ the 3C8 analysis software should be used to do some statistical

counting for downlin6 leel uality at conersation state. Then+ it is supposed to

produce a 2/- map which shows the downlin6 leel distribution.

(.,.3 +ethods of $roblem analysis and $roblem solving

The main causes for poor downlin6 uality should be analyed on basis of the

downlin6 leel and downlin6 CB/ which are measured in T test. The common causes

for poor downlin6 uality include interferences inside and outside the networ6+

hardware failures+ inappropriate configuration of neighbor cells and parameters+ and so

on.

1. /f the call uality is poor 8x5 I ? and the downlin6 leel is normal+ CB/ at that

time needs to be chec6ed. /f CB/ is small K 10+ it is obious that downlin6

interferences exist in the cell. The interfering resources may come from inside the

networ6 or outside the networ6.

@or interferences from inside the networ6+ the freuency planning of the site

should be chec6ed through the planning software to see whether there are obious

co%channel and ad*acent channel problems. "t the same time+ it can be confirmed

whether the interfering resources come from the neighbor cells nearby on basis of

the neighbor cell measurement reports. /f it is confirmed that the interfering

resources come from co%channel and ad*acent channel interferences from inside

the networ6+ the releant freuency point needs freuency optimiation.

7esides+ for those cells where freuency hopping exists+ it should be confirmed

whether the following freuency hopping parameters are configured correctly:

3"+ 3"/+ )-F and so on.

/f there are interferences from outside the networ6+ sweep generator should be

used to do freuency%sweep so as to locate the interfering sources. The most

familiar interfering sources from outside the networ6 include TV station+ high%

power radio station+ microwae+ radar+ high oltage power lines+ secure

conferencing euipment+ interference unit at a gas station+ and so on. @or detailed




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chec6 procedures+ please refer to GSM P O Interference Sol#tions-

G#ide$ook .

#. /f the call uality is poor 8x5 I leel ? and the downlin6 leel and downlin6 CB/

are normal+ the problem may be caused by hardware failures. /n this case+ it

should be chec6ed whether there are carrier freuency alarms or CA related

alarms. @or example+


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Examine the neighbor cell list to see whether the nearby neighbor cells of the test

system are all listed out. /f there are cells which should be listed out but not+ it is

suggested that 3C8 engineers should be as6ed to chec6 whether neighbor cells

are omitted or whether there are problems with the existing neighbor cells.

The leel of both the sering cell and neighbor cells should be chec6ed to see

whether there are handoer problems+ for example+ hysteretic handoer+ uic6

handoer+ ping%pong handoer and so on.

"fter the test+ a statistical counting of handoer eents should be done for the test

files so as to get the successful handoer rate indicator. The source cells and target

cells which are related to unsuccessful handoers dersere special attention.

(..3 +ethods of $roblem analysis and $roblem solving

uring the single site erification test+ if there are handoer failure eents+ the

following items should be chec6ed:

1. Chec6 whether the neighbor cell data are configured as planned for each cell. /f

the configuration is not right+ the handset can not be connected to the cell which

has the most suitable leel. The result is that there will be handoer failures. /t can

be chec6ed whether the neighbor cells are configured completely and correctly

through the neighbor cell list of drie test software.

#. !hen handoer failure occurs+ the releant source cell and target cell should be

paid attention to. /t should be analyed whether the handoer is *ustified in aspects

of geographic topology+ leel of sering cell+ and leel of target cell. /t should be

chec6ed whether there are problems with the downlin6 coerage leel+ the

downlin6 uality+ or the target cell.

9. /f the handoer failure is caused by the donwlin6 coerage or downlin6 uality

problems of the sering cell+ section ;.9 and Error: 8eference source not found

should be referred to.

;. /f there are no problems with the sering cell+ it should be analyed whether the

location of the target cell is appropriate or whether the leel of 7CC) is

reasonable. 7esides+ it should also be chec6ed whether the target cell has

problems li6e oershooting coerage or wea6 coerage.

?. Chec6 whether the target cell has co%channel interferences. That is+ it should be

chec6ed whether the target cell has co%channel cells within a certain range. /t isThis document contains proprietary information of ZTE Corporation and is not to be disclosed or used



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uite possible to hae continuous handoer failures if there are co%channel and co%

7/-C cells.

=. Chec6 whether the handoer failure is caused by the too slow handoer. ThatGs

because interferences will increase if the handoer is too slow. This *udgment can

be made on basis of the leel of sering cell and ad*acent cells. !ith this 6ind of

problems+ some parameters should be optimied to improe the handoer speed+

including handoer


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33- sending and reception+ and so on. Each item should be tested for 10 times+

and then the aerage alue will be recorded. @or detailed procedures of


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Chec6 whether the extra abis time slots for transmission are correctly

configured for the site which is to be chec6ed.

Chec6 whether


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, Acce$tance standard for single siteverification

"fter the erification test+ the 3C8 analysis software is used to analye the test log

so as to get the H


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Fo. Fame Chec6 items "cceptance standards

time should be no more than &s both theauthentication and encryption are not enabled.

;

Verification

of receied

signal leel

Chec6 whether the downlin6

coerage leel is normal+ and whether

the coerage range is normal.

The downlin6 8xle should be around －

=0d7m on the direct direction+ within 1003 from

the site.

@or macro 7T- in urban areas+ samples whose

coerage leel I%&?d7m should reach >0％.

@or sites in suburban areas+ samples whose

coerage leel I%$0d7m should reach >0％.

?

Verification

of receied

signal uality

Chec6 whether the downlin6 call

uality is normal+ and whether there

are interferences from inside the

networ6.

/f there is non%hopping+ and the coerage leelis larger than %>?d7m I%>?d7m+ the call uality

should be lower than leel # K leel #. /f there is

freuency hopping+ and the coerge leel is larger

than %>?d7m I%>?d7m+ the call uality should

be lower than leel 9 K leel 9.

/f the coerage is at a normal state+ samples

whose 8x5ual leel is among 0%; should reach no

less than >0L Q>0L+ and samples whose

8x5ual leel is at = or & should reach no more

than 10L ≤ 10L.

=

Verificaiton

of handoer

functions

Chec6 whether the configuration of

handoer functions and neighbor cell

data is reasonable. 7esides+ chec6 the

uplin6 receied signal leel and

uality.

Formally+ the successful handoer rate should

be oer $0L. 7esides+ there should be no

problems li6e ping%pong handoer+ no handoer+

or inappropriate target cell.

>Verification

of


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A single site verification re$ort/n practice+ the single site erification which the networ6 planning department is

responsible for is the last step of networ6 migration before the access to networ6 is

enabled. The single site erification consists of ; 6ey procedures+ that is+ testing+

problem analysis+ problem handling+ and writing a report. The erification of each site

is finished with " -ingle -ite Verification 8eport. /f it is accepted by the client+ it

means that the whole erification is successfully completed.

The erification report should include the following items:

" list of basic erification information and status confirmation.

-tatus of H


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A$$endi# AA1 Tem$lates of 0+ single site verification re$ort

The format and content of single site erification report ary with different pro*ect

reuirements. The two templates proided here are based on the wor6 field pro*ects.

Template 1 is for a newly established site+ but the erification test of

45977861 GSM Network Planning and Optimization Single Site Verification Work Guidebook V1 0

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Transcript of 45977861 GSM Network Planning and Optimization Single Site Verification Work Guidebook V1 0