DUAL Band Optimisation.doc

7/26/2019 DUAL Band Optimisation.doc

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Cell_Bar_Access

Parameter Name Cell_Bar_Access

Description This parameter specifies the cell bar access (CBA).

Value No indicates that cell access is allowed.

Value Yes indicates that cell access is not allowed.

Together with CB! this parameter can be used to determine the priorit"

of cells. #or details! see $%& 'ec. .*.

Cell_Bar_ualif" Cell_Bar_ Access Cell selection priorit" Cell reselectpriorit"

No No Normal Normal

No Yes Barred Barred

Yes No +ow Normal

Yes Yes +ow Normal

GUI Value Range ,No!Yes-

Default Value No

Unit None

Step

Modification Rules None

Configuration Polic The CBA function applies to special conditions. /f this parameter is set to

Yes and Cell Bar ualit" (CB) is set to No! onl" hando0ers are allowedin a cell! and direct access of an &% is not allowed. This condition applies

to a dualnetwor1 co0erage cell. #or a common cell! this parameter

should be set to No.

The 0alue of CBA affects the networ1 access of an &%.

Recommended Value No

Parameter

Relations!ip

Cell_Bar_ualif"

BSC "eature None


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Parameter Class 2arameters About 'adio 'esources

Caution None

CR#$%dB&

Parameter Name C'3(4dB)

Description This parameter specifies the manual correction of C4.

/f this parameter is properl" configured! the number of hando0ers can bereduced and a better cell can be assigned to the &%. 5hen 2T is set to 67!

it becomes more difficult for an &% to access the cell when C'3increases.

$enerall"! the C'3 should be less than 48 dB because e9cessi0el" large

C'3 ma" bring uncertainties to the networ1./n addition! the same C'3

applies to the cells with the same priorit".#or details! see $%& 'ec. 8.*

and .*.

This parameter affects onl" $%& 2hase // &%s or $%& 2hase//: &%s.

GUI Value Range ,!;6-

Default Value

Unit +e0els

Step 4dB


Configuration Polic The settings of '


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SACC' Multi("rames$SACC' period

$)*+ms&&Parameter Name %ACC> &ulti#rames(%ACC> period (*ms))

Description This parameter is used b" the BT% to inform the B%C of radio lin1

connection failure.

5hen the BT% recei0es the %ACC> measurement report from the &%!

the counter for determining whether a radio lin1 is fault" is set to the

0alue of this parameter. =ach time the BT% fails to decode the %ACC>

measurement report sent b" the &%! the counter decreases b" 7. /f the

BT% successfull" decodes the %ACC> measurement report! the counterincreases b" 4.

5hen the 0alue of the counter is ! the radio lin1 fails.The BT% sends aconnection failure indication message to the B%C.The number of %ACC>

multiframes and the radio lin1 failure counter in the s"stem message

specif" the radio lin1 failure time on the uplin1 and that on the downlin1

respecti0el". The ?udgment standard is whether the %ACC> message iscorrectl" decoded.


Default Value 64

Unit %ACC> period (*ms)

Step * ms


Configuration Polic /f the 0alue of this parameter does not match with the 0alue supported b"

the BT%! an alarm is generated.

Recommended Value 64

ParameterRelations!ip

None

BSC "eature None


Caution None


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RAC' Bus ,!res!old

Parameter Name 'AC> Bus" Threshold

Description #or the BT%6< series and doubletranscei0er BT%s! this parameterspecifies the le0el threshold for the &% random access when the BT%determines the 'AC> bus" state. 5hen the recei0e le0el of the random

access burst timeslot is greater than this threshold! the BT% considers that

the timeslot is bus". #or the BT%6< series and the doubletranscei0erBT%s! this parameter onl" indicates whether the timeslot is bus". The

threshold setting does not affect the normal access of the &%.

#or the BT%4< series (e9cluding the BT%4)! this parameter specifies the

le0el threshold for the BT% to determine an &% random access.5hen therecei0e le0el of the random access burst timeslot is greater than this

threshold and the access demodulation is successful! the BT% considersthat the timeslot is bus" and determines whether the 'AC> access is

0alid based on the parameter 'andom Access =rror Threshold. #or theBT%4 Bus" Threshold.

#or the BT%4! this parameter has two functions. 3ne function is

indicating the le0el threshold of the &% random access for the s"stem to

determine the 'AC> bus" state. 5hen the recei0e le0el of the random

access burst timeslot is greater than this threshold! the BT% considers thatthe timeslot is bus". The other function is indicating whether the &%

access is allowed.The &% access is allowed onl" when access le0el(including random access and hando0er access) is greater than the

threshold.

The 0alue of this parameter ranges from to ;6 (corresponding to 77

dBm to @ dBm).


Default Value 7;

Unit +e0els

Step 4dB


Configuration Polic #or the BT%4< series (e9cluding the BT%4)! this parameter must be setaccording to the actual recei0er sensiti0it" of the BT% and the minimum


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access le0el of the &% to ensure the balance between the uplin1 and the

downlin1. This parameter also affects hando0er access of 'AC> B'%T

during as"nchronous hando0er.

#or the BT%6< series and doubletranscei0er BT%s! this parameter does

not affect &% access but affects the reporting of CCC>_+3A_/N. /fthe le0el recei0ed b" the BCC> on the networ1 side is greater than the

'AC> Bus" Threshold! the CCC>_+3A_/N is counted once whetherthe decoding is successful. The 'AC> whose le0el is lower than the

'AC> Bus" Threshold and whose decoding is successful is also counted.

The measurement period is the A0erage 'AC> +oad Timeslot Number.

/f the 0alue of this parameter is too small! the BT% easil" considers thatthe 'AC> timeslot is bus" and reports o0erload messages to the B%C. /f

the 0alue is too great! the BT% cannot determine the status of the 'AC>

timeslot correctl".

#or the BT%4! if this parameter is used to determine bus" timeslot! itssetting is consistent with that in the BT%6. /f this parameter is the le0el

threshold for 0alid random access! its setting is consistent with that in the

BT%4.

The settings of the BT%674! BT%67C! BT%67C:! BT%64C! anddoubletranscei0er BT% must be consistent with the meaning and

reuirement of the BT%6.

Recommended Value 7;

Parameter

Relations!ip

'AC> &in.Access +e0el(dbm)

BSC "eature None


Caution None

Directed Retr -oad Access ,!res!old

Parameter Name irected 'etr" +oad Access Threshold

Description This parameter is used to ad?ust candidate target cells for directed retr" in


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>3 Algorithm /.

5hen target cells are selected during directed retr"! onl" the cells whoseloads are smaller than or eual to the irected 'etr" +oad Access

Threshold are selected as candidate target cells.

GUI Value Range ,!7-

Default Value *8

Unit D

Step


Configuration Polic /f the 0alue of the parameter is too high! the cells with hea0" loads are

selected as candidate target cells so that the hando0er does not ma1e

sense. /f the 0alue of the parameter is too low! it is difficult to selectcandidate target cells.

Recommended Value *8

Parameter

Relations!ip

uring directed retr"! onl" the cells whose loads are smaller than or eual

to irected 'etr" +oad Access Threshold are selected as candidate target

cells.

BSC "eature Channel &anagement


Caution None

SACC' Multi("rames$SACC' period

$)*+ms&&

Parameter Name %ACC> &ulti#rames(%ACC> period (*ms))Description This parameter is used b" the BT% to inform the B%C of radio lin1

connection failure.

5hen the BT% recei0es the %ACC> measurement report from the &%!

the counter for determining whether a radio lin1 is fault" is set to the0alue of this parameter. =ach time the BT% fails to decode the %ACC>


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measurement report sent b" the &%! the counter decreases b" 7. /f theBT% successfull" decodes the %ACC> measurement report! the counter

increases b" 4.

5hen the 0alue of the counter is ! the radio lin1 fails.The BT% sends aconnection failure indication message to the B%C.The number of %ACC>multiframes and the radio lin1 failure counter in the s"stem message

specif" the radio lin1 failure time on the uplin1 and that on the downlin1

respecti0el". The ?udgment standard is whether the %ACC> message iscorrectl" decoded.


Default Value 64


Step * ms


Configuration Polic /f the 0alue of this parameter does not match with the 0alue supported b"

the BT%! an alarm is generated.


Parameter

Relations!ip

None

BSC "eature None


Caution None

A"R SACC' Multi("rames$SACC' period$)*+ms&&

Parameter Name A#' %ACC> &ulti#rames(%ACC> period (*ms))

Description This parameter specifies the number of %ACC> multiframes under full

rate A&' calls. #or details! see the description of %ACC> multiframes.


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Default Value *


Step


Configuration Polic The A&' coding has strong antiinterference capabilities. nder the

same frame erasion rate (#=')! the A&' coding supports a low CE/ ratio

compared with nonA&' coding. /f the A&' function is enabled! the

speech ualit" is impro0ed. The 0alue of A#' %ACC> &ulti#rames(%ACC> period (*ms)) in A&' coding mode can be a little

more than that in nonA&' coding mode.

Recommended Value *

Parameter

Relations!ip

None

BSC "eature A&'


Caution None

A'R SACC' Multi("rames$SACC' period

$)*+ms&&

Parameter Name A>' %ACC> &ulti#rames(%ACC> period (*ms))

Description This parameter specifies the number of %ACC> multiframes under half

rate A&' calls. #or details! see the description of %ACC> multiframes.


Default Value 64


Step



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same frame erasure rate (#=')! the A&' coding supports a low CE/ ratio

compared with nonA&' coding. /f the A&' function is enabled! thespeech ualit" is impro0ed. The 0alue of A>' %ACC> &ulti

#rames(%ACC> period (*ms)) in A&' coding mode can be a little

more than that in nonA&' coding mode.


Parameter

Relations!ip

None

BSC "eature A&'


Caution None

A"R Radio -in. ,imeout$SACC' period

$)*+ms&&

Parameter Name A#' 'adio +in1 Timeout(%ACC> period (*ms))

Description This parameter specifies the 0alue of 'adio +in1 Timeout under fullrate

A&' calls. #or details! see 'adio +in1 Timeout (%ACC>

period(*ms)).

GUI Value Range ,!*!74!7;!4!4!4*!64!6;!!!*!84!8;!;!;-

Default Value ;


Step



same frame erasure rate (#=')! the A&' coding supports a low CE/ ratiocompared with nonA&' coding. /f the A&' function is enabled! the

speech ualit" is impro0ed. The 0alue of A#' 'adio +in1

Timeout(%ACC> period (*ms)) in A&' coding mode can be a littlemore than that in nonA&' coding mode.

Recommended Value ;


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Parameter

Relations!ip

A#' %ACC> &ulti#rames(%ACC> period (*ms))

BSC "eature A&'


Caution None

A'R Radio -in. ,imeout$SACC' period

$)*+ms&&

Parameter Name A>' 'adio +in1 Timeout(%ACC> period (*ms))

Description This parameter specifies the 0alue of 'adio +in1 Timeout under halfrateA&' calls. #or details! see 'adio +in1 Timeout (%ACC>

period(*ms)).

GUI Value Range ,!*!74!7;!4!4!4*!64!6;!!!*!84!8;!;!;-

Default Value 84


Step



same frame erasure rate (#=')! the A&' coding supports a low CE/ ratiocompared with nonA&' coding. /f the A&' function is enabled! the

speech ualit" is impro0ed. The 0alue of A>' 'adio +in1

Timeout(%ACC> period (*ms)) in A&' coding mode can be a littlemore than that in nonA&' coding mode.


Parameter

Relations!ip

A>' %ACC> &ulti#rames(%ACC> period (*ms))

BSC "eature A&'


Caution None


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Radio -in. ,imeout$SACC' period

$)*+ms&&

Parameter Name 'adio +in1 Timeout(%ACC> period (*ms))

Description This parameter specifies when an &% disconnects a call if the &%

unsuccessfull" decodes the %ACC> message. #or details of thisparameter! see $%& 'ec. * and 8.*.

3nce a dedicated channel is assigned to the &%! the counter % is enabled

and the initial 0alue is set to this parameter 0alue.

=ach time an %ACC> message is not decoded! the counter % decreases b"7. =ach time an %ACC> message is correctl" decoded! the counter %

increases b" 4.5hen the counter % is eual to ! the downlin1 radio lin1

is considered as failed.Therefore! when the 0oice or data ualit" is

degraded to an unacceptable situation and it cannot be impro0ed throughpower control or channel hando0er! the connection is to be reestablished

or released.

GUI Value Range ,!*!74!7;!4!4!4*!64!6;!!!*!84!8;!;!;-

Default Value 84


Step


Configuration Polic /f this parameter is set to a small 0alue! radio lin1s are li1el" to be fault"

and therefore call drops occur.

/f this parameter is set to a great 0alue! a long time lasts before an &%

disconnects a call! and therefore resource usage is low. This parameter

ta1es effect on the downlin1.

Recommended Value /n the areas where the traffic 0olume is low! such as rural areas! thisparameter should range from 84 to ;.

Parameter

Relations!ip

None

BSC "eature None


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Caution None

Allo/ Reassign

Parameter Name Allow 'eassign

Description This parameter specifies whether to allow the reassignment function.


Default Value YesUnit None

Step


Configuration Polic /f this parameter is set to Yes! the B%C initiates a reassignment when

recei0ing an assignment failure message from the m interface. Thishelps to impro0e the call completion rate and the o% of the networ1. /f

there are a large number of assignment failure messages! the B%C

initiates man" reassignment procedures and thus the B%C load increases.

Recommended Value Yes

Parameter

Relations!ip

None



Caution None

RAC' Min0Access -e1el$d2m&

Parameter Name 'AC> &in.Access +e0el(dbm)


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Description #or the BT%6< in 6.84F or later and the doubletranscei0er BT%s! this

parameter specifies the le0el threshold for the random access of the &%.

/f the recei0e le0el of the 'AC> burst is smaller than the 0alue of 'AC>&in.Access +e0el! the BT% regards this access as an in0alid one and no

decoding is performed. /f the recei0e le0el of the 'AC> burst is greater

than the 0alue of 'AC> &in. Access +e0el! the BT% considers that anaccess reuest e9ists on this timeslot! and determines together with the0alue of 'andom Access =rror Threshold whether the 'AC> access is

0alid.

$enerall"! 'AC> Bus" Threshold is higher than 'AC> &in.Access

+e0el. Therefore! for the BT%4! 'AC> &in.Access +e0el is shielded.

#or the BT%4< (e9cluding the BT%4)! the 'AC> &in.Access +e0elparameter is in0alid.

GUI Value Range ,747!@-

Default Value 7F

Unit dbm

Step


Configuration Polic $enerall"! this parameter is set according to the actual BT% recei0ersensiti0it" and the minimum &% access le0el. 'AC> Bus" Threshold

must be greater than 'AC> &in.Access +e0el.

Recommended Value 7F

Parameter

Relations!ip

'AC> Bus" Threshold

BSC "eature None


Caution None

AMR ACS$"&$32it4s&

Parameter Name A&' AC%(#)(GbitEs)

Description This parameter specifies the set of acti0e coding rates. The acti0e coding


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set (AC%) is a set of coding rates currentl" a0ailable for calls. se a B/T

map to present the speech coding rates contained in the AC%! wherein a

B/T corresponds to a coding rate. /f a bit is 7! the coding rate is includedin the AC%. 3therwise! the AC% does not include the coding rate. The

0alue of this parameter has eight bits.

GUI Value Range ,[email protected]!@.!;.@!8.F!8.78!.@8-

Default Value 7777

Unit GbitEs

Step


Configuration Polic =ach bit indicates whether a coding rate is contained in the AC%. The

eight bits represent the coding rates from 74.4 1bitEs to .@8 1bitEs (from

left to right). Bit 7 means that the coding rate is contained in the AC% andbit means that the coding rate is not contained in the AC%. 3ne to four

coding rates can be selected simultaneousl".

/f onl" one coding full rate is specified b" this parameter! then A&'

%tarting &ode (#) must be set to . All the A&' coding rate ad?ustmentthresholds and h"steresis are meaningless.

/f two coding rates are specified b" this parameter! then A&' %tarting

&ode (#) can be set to or 7. The parameters A&' + Coding 'ate

ad?.th7 (#)! A&' + Coding 'ate ad?.h"st7 (#)! A&' + Coding 'ate

ad?.th7(#)! and A&' + Coding 'ate ad?.h"st7 (#) are meaningful. 3therA&' coding rate ad?ustment thresholds and h"steresis are meaningless.

/f three coding rates are specified b" this parameter! then A&' %tarting

&ode (#) can be set to ! 7! or 4. The parameters A&' + Coding 'atead?.th7 (#)! A&' + Coding 'ate ad?.h"st7 (#)! A&' + Coding 'ate

ad?.th7(#)! and A&' + Coding 'ate ad?.h"st7 (#) are meaningful. 3ther

A&' coding rate ad?ustment thresholds and h"steresis are meaningless.

/f four coding rates are specified b" this parameter! then A&' %tarting&ode (#) can be set to ! 7! 4! or 6. All the A&' coding rate ad?ustment

thresholds and h"steresis are meaningful.


Parameter

Relations!ip

None

BSC "eature A&'


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Caution None

AMR ACS$'&$32it4s&

Parameter Name A&' AC%(>)(GbitEs)

Description This parameter specifies the set of acti0e coding rates. The acti0e codingset (AC%) is a set of coding rates currentl" a0ailable for calls. se a B/T

map to present the speech coding rates contained in the AC%! wherein a

B/T corresponds to a coding rate. /f a bit is 7! the coding rate is included

in the AC%. 3therwise! the AC% does not include the coding rate. The0alue of this parameter has fi0e bits.

GUI Value Range ,@.F8!@.!;.@!8.F!8.78!.@8-

Default Value 777

Unit GbitEs

Step


Configuration Polic =ach bit indicates whether a coding rate is contained in the AC%. The fi0ebits represent the coding rates from @. 1bitEs to .@8 1bitEs (from left to

right). Bit 7 means that the coding rate is contained in the AC% and bit means that the coding rate is not contained in the AC%. 3ne to four

coding rates can be selected simultaneousl".

/f onl" one coding rate is specified b" this parameter! then the parameter

A&' %tarting &ode (>) must be set to ! which means the lowest codingrate. All A&' coding rate ad?ustment thresholds (>) and A&' coding

rate ad?ustment h"stereses (>) are meaningless.

/f two coding rates are specified b" this parameter! then A&' %tarting&ode (>) can be set to or 7. The parameters A&' + Coding 'atead?.th7 (>)! A&' + Coding 'ate ad?.h"st7 (>)! A&' + Coding 'ate

ad?.th7(>)! and A&' + Coding 'ate ad?.h"st7 (>) are meaningful.

3ther A&' coding rate ad?ustment thresholds (>) and A&' coding ratead?ustment h"stereses (>) are meaningless.

/f three coding rates are specified b" this parameter! then A&' %tarting


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&ode (>) can be set to ! 7! or 4. The parameters A&' + Coding 'atead?.th7 (>)! A&' + Coding 'ate ad?.h"st7 (>)! A&' + Coding 'ate

ad?.th7(>)! and A&' + Coding 'ate ad?.h"st7 (>) are meaningful.

3ther A&' coding rate ad?ustment thresholds (>) and A&' coding rate

ad?ustment h"stereses (>) are meaningless.

/f four coding rates are specified b" this parameter! then A&' %tarting

&ode (>) can be set to ! 7! 4! or 6. All the A&' coding rate ad?ustment

thresholds (>) and A&' coding rate ad?ustment h"stereses (>) aremeaningful.


Parameter

Relations!ip

None

BSC "eature A&'


Caution None

Co(BSC4MSC Ad5

Parameter Name CoB%CE&%C Ad?

Description This parameter specifies whether to ad?ust the seuence of candidate

cells. After the seuence is ad?usted! the hando0er within the same

B%CE&%C ta1es priorit".


Default Value Yes

Unit None

Step


Configuration Polic /f this parameter is set to Yes! the target cell to which the &% is handed

o0er ma" not be the cell with the best signal ualit".

Recommended Value Yes


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Parameter

Relations!ip

None

BSC "eature >ando0er


Caution None

6dge '# U- R7_-6V ,!res!old

Parameter Name =dge >3 + '3 + '3 +

'3 +

'


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4H suburbs with a single BT%

4H urban areas with 2B$T hando0er enabled


None



Caution 7. =dge >3 + '3 + '3 + '3 + '


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Configuration Polic This parameter should be ad?usted as reuired. /f the =dge >3 +

'3 Algorithm /.

GUI Value Range ,7!7;-

Default Value 6

Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the edge

hando0er can be triggered.


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Recommended Value 6

Parameter

Relations!ip

=dge >3 Valid Time(s)



Caution This parameter is a0ailable onl" when >3 Control %witch is set to >3

Algorithm /. This parameter is in0alid when the >3 Control %witch is set

to >3 Algorithm //.

6dge '# Valid ,ime$s&Parameter Name =dge >3 Valid Time(s)

Description According to the 2EN criterion! if the + or + recei0e le0el is lower thanits corresponding edge hando0er threshold for 2 consecuti0e times within

N times! an edge hando0er is triggered.

This parameter corresponds to 2 of the 2EN criterion! and applies onl" to>3 Algorithm /.


Default Value 4

Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the edge


Recommended Value 4

Parameter

Relations!ip

=dge >3 5atch Time(s)





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Algorithm /. This parameter is in0alid when the >3 Control %witch is set

to >3 Algorithm //.

-aer '# 8atc! ,ime$s&

Parameter Name +a"er >3 5atch Time(s)

Description According to the 2EN criterion! if the signals in the candidate cell are

better than those in the ser0ing cell for 2 consecuti0e times within N

times! a la"ered hierarchical hando0er is triggered.

This parameter corresponds to N of the 2EN criterion.


Default Value 6

Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the

la"ered hierarchical hando0er can be triggered.

Recommended Value 6

Parameter

Relations!ip

+a"er >3 Valid Time(s)



Caution This parameter is a0ailable onl" when >3 Control %witch is set to >3Algorithm /. This parameter is in0alid when the >3 Control %witch is set

to >3 Algorithm //.

-aer '# Valid ,ime$s&

Parameter Name +a"er >3 Valid Time(s)


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Description According to the 2EN criterion! if the signals in the candidate cell are

better than those in the ser0ing cell for 2 consecuti0e times within N

times! a la"ered hierarchical hando0er is triggered.

This parameter corresponds to 2 of the 2EN criterion.


Default Value 4

Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the

la"ered hierarchical hando0er can be triggered.

Recommended Value 4

Parameter

Relations!ip

+a"er >3 5atch Time(s)




to >3 Algorithm //.

PBG, 8atc! ,ime$s&

Parameter Name 2B$T 5atch Time(s)

Description According to the 2EN criterion! if the ad?acent cell 1eeps meeting the

triggering conditions of 2B$T hando0er for 2 consecuti0e times within N

times! a 2B$T hando0er is triggered and the &% is handed o0er to thead?acent cell.

This parameter corresponds to N of the 2EN criterion.


Default Value 6


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Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the 2B$Thando0er can be triggered.

Recommended Value 6

Parameter

Relations!ip

2B$T Valid Time(s)




Algorithm /. This parameter is in0alid when the >3 Control %witch is setto >3 Algorithm //.

PBG, Valid ,ime$s&

Parameter Name 2B$T Valid Time(s)

Description According to the 2EN criterion! if the ad?acent cell 1eeps meeting the

triggering conditions of 2B$T hando0er for 2 consecuti0e times within Ntimes! a 2B$T hando0er is triggered and the &% is handed o0er to the

ad?acent cell.

This parameter corresponds to 2 of the 2EN criterion.


Default Value 4

Unit %econds

Step


Configuration Polic The greater the 0alue of this parameter is set! the more difficult the 2B$T


Recommended Value 4

Parameter 2B$T 5atch Time(s)


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Relations!ip




to >3 Algorithm //.

Inter(laer '# ,!res!old

Parameter Name /nterla"er >3 Threshold

Description This parameter is one bit of the 7; bits that are used b" the B%C to sort

the candidate cells for hando0ers.

/f the + recei0e le0el of a cell is lower than the /nterla"er >3Threshold! the cell is listed in the candidate cells based on the recei0e

le0el. The cell ta1es a low priorit" for hando0ers.

The 0alue of this parameter ranges from to ;6 (corresponding to 77

dBm to @ dBm).


Default Value 48

Unit +e0els

Step


Configuration Polic None


Parameter

Relations!ip

None

BSC "eature None


Caution Note that in hierarchical hando0er and load hando0er! the priorit" of the


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target cell must be higher than the /nterla"er >3 Threshold.

Inter(laer '# 'steresis

Parameter Name /nterla"er >3 >"steresis

Description This parameter specifies the h"steresis of an interla"er or interpriorit"hando0er. This parameter is used to a0oid interla"er pingpong

hando0ers.

Actual /nterla"er >3 Threshold of a ser0ing cell J configured /nterla"er

>3 Threshold /nterla"er >3 >"steresis

Actual /nterla"er >3 Threshold of an ad?acent cell J configured /nter

la"er >3 Threshold : /nterla"er >3 >"steresis of an ad?acent cell ;.


Default Value 4

Unit dB

Step

Modification Rules NoneConfiguration Polic None

Recommended Value 4

Parameter

Relations!ip

None

BSC "eature None


Caution None

-oad '# ,!res!old$9&


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Parameter Name +oad >3 Threshold(D)

Description 5hen +oad >3 Allowed is set to Yes! +oad >3 Threshold should be set

to *8.

The traffic load of a cell refers to the TC> seiKure rate in the cell.

The load hando0er is triggered when the traffic load in a cell is greater

than the 0alue of this parameter. /n other words! the load hando0er istriggered when the ratio of TC>s occupied in a cell reaches the threshold

defined for load hando0er.


Default Value F

Unit D

Step


Configuration Polic The setting of this parameter affects the triggering of the load hando0er. /f

it is set to a lower 0alue! the number of load hando0ers increases.

Recommended Value F

Parameter

Relations!ip

+oad >3 Allowed



Caution The +oad >3 Threshold and +oad 'e.on Candidate Cell parametersaffect the sorting of candidate cells. Therefore! when the cell load is high!

if this parameter is improperl" set! the 2B$T hando0er ma" fail

Penalt -e1el after B: '#Parameter Name 2enalt" +e0el after B >3

Description This parameter specifies the degree of penalt" imposed on the original

ser0ing cell where an emergenc" hando0er associated with bad signal

ualit" is initiated. This parameter is defined to a0oid pingpong


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hando0er and is 0alid onl" within the 2enalt" Time after B >3.

After an emergenc" hando0er is performed due to bad ualit"! the recei0e

le0el of the ser0ing cell is decreased b" the penalt" le0el. Thus! other

cells are gi0en higher priorit" and hando0er to the ser0ing cell is not

allowed.

The penalt" le0el 0alues through ;6 map to 77 dBm to @ dBm.


Default Value ;6

Unit +e0els

Step


Configuration Polic /f this parameter is set to a lower 0alue! the &% is li1el" to be handed

o0er to the original ser0ing cell! thus leading to pingpong hando0ers. /f

this parameter is set to a higher 0alue! the &% is unli1el" to be handedo0er to the original ser0ing cell.

Recommended Value ;6

Parameter

Relations!ip

None



Caution None

Penalt ,ime after B: '#$s&

Parameter Name 2enalt" Time after B >3(s)

Description This parameter specifies the duration of the penalt" imposed on the

original cell where an emergenc" hando0er associated with bad signal

ualit" is initiated.

uring the penalt" time! the recei0e le0el of the original ser0ing cell is

decreased b" the penalt" le0el. Thus! other cells are gi0en higher priorit"


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and hando0er to the original ser0ing cell is not allowed.


Default Value 7

Unit %econds

Step


Configuration Polic /f this parameter is set to a lower 0alue! the &% is li1el" to be handedo0er to the original ser0ing cell! thus leading to pingpong hando0ers. /f

this parameter is set to a higher 0alue! the &% is unli1el" to be handed

o0er to the original ser0ing cell.

Recommended Value 7


None



Caution None

6mergenc '# ,A ,!res!oldParameter Name =mergenc" >3 TA Threshold

Description An emergenc" hando0er is triggered when TA is greater than or eual tothe 0alue of this parameter.


Default Value 488

Unit Bit period (A bit period corresponds to .88 1m.)

Step


Configuration Polic This parameter determines the cell co0erage for the TA emergenc"

hando0er. /n the areas with small space between BT%s and densel"

distributed BT%s! the co0erage of the cell can be reduced if this parameter

is set to a lower 0alue.


29/53


Parameter

Relations!ip

None



Caution None

Idle SDCC' ,!res!old N;

Parameter Name /dle %CC> Threshold N7

Description /f the number of idle %CC>s in the cell is smaller than or eual to the

0alue of this parameter! the B%C tries to find a TC># that can be

con0erted to the %CC>.

This parameter specifies one of the conditions for con0erting the TC># tothe %CC>.

Besides this parameter! the other three conditions for initiating the

con0ersion from TC>#s to %CC>s are as followsH

7.The cell allows the %CC> d"namic ad?ustment.

4.(Number of idle TC>#s : number of idle TC>>sE4) L or the numberof T'#.

6.The sum of the number of %CC>s in the cell plus eight is smaller than

the ma9imum number of %CC>s allowed in the cell.


Default Value 4

Unit None

Step


Configuration Polic /f this parameter is set too large and conseuentl" there is a small number


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of reuests for %CC>s! the %CC>s of a cell are in idle stateM

/f this parameter is set too small and conseuentl" there is a large numberof reuests for %CC>s! the reuests cannot meet the reuirements.

Recommended Value 4

Parameter

Relations!ip

None

BSC "eature %CC> "namic Ad?ustment


Caution None

Cell SDCC' C!annel Ma Channel &a9imum

Description 5hen the B%C determines whether to initiate the con0ersion from theTC> to the %CC>! it needs to determine whether the number of

%CC>s after the con0ersion e9ceeds the Cell %CC> Channel

&a9imum. /f the number of %CC>s e9ceeds the 0alue of thisparameter! the B%C does not initiate the con0ersion.


Default Value *

Unit None

Step


Configuration Polic /f this parameter is set too small! the %CC>s in the cell ma" be

insufficient and the d"namic ad?ustment cannot be initiated! thus affecting

the access of users. /t is meaningless to set the parameter too large.

Recommended Value *

Parameter

Relations!ip

None

BSC "eature %CC> "namic Ad?ustment


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Caution None

Cell Directed Retr "or2idden ,!res!old

Parameter Name Cell irected 'etr" #orbidden Threshold

Description /f Assignment Cell +oad udge =nable is set to Yes! the directed retr"procedure is started if the following two conditions are metH The cell

supports the directed retr" procedure. The load of the cell is greater than

or eual to the Cell irected 'etr" #orbidden Threshold.


Default Value F

Unit D

Step



Recommended Value FParameter

Relations!ip

Assignment Cell +oad udge =nable

BSC "eature None


Caution None

Pan Decrement

Parameter Name 2an ecrement

Description This parameter is used to set the 0alue of N674. 5hen T67*4 e9pires!

the &% decreases N674 b" 2AN_=C.


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Value indicates that 2AN_=C is M 0alue @ indicates that 2AN_=C is

@M 0alue No use indicates that this parameter is not used.

GUI Value Range ,!7!4!6!!8!;!@!not use-

Default Value 7

Unit None

Step



Recommended Value 7

Parameter

Relations!ip

None

BSC "eature $2'%O=$2'%


Caution None

Pan Increment

Parameter Name 2an /ncrement

Description This parameter is used to set the 0alue of N674. 5hen the &% recei0es a

2ac1et ownlin1 Ac1ENac1 message from the networ1 for increasing the

0alue of V(%) or V(A)! the &% increases N674 b" 2AN_/NC.

Value indicates that 2AN_/NC is M 0alue @ indicates that 2AN_/NC is

@M 0alue No use indicates that this parameter is not used.

GUI Value Range ,!7!4!6!!8!;!@!not use-

Default Value 4

Unit None

Step



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Configuration Polic 2AN_/NC should be greater than 2AN_=C. suall"! 2AN_/NC J 4 9

2AN_=C.

>owe0er! N674 cannot e9ceed 2AN_&A


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Caution None

Mas in a Cell(D)

Description This parameter specifies the ma9imum ratio of 2C>s in a cell. The totalnumber of TC>s and 2C>s a0ailable in a cell is fi9ed. The formula forcalculating the ratio of 2C>s is as followsH 'atio of 2C>s J Number

of a0ailable 2C>sE(Number of a0ailable TC>#s : Number of a0ailable

static 2C>s). This parameter determines the ratio of 2C>s to total

TC>#s and static 2C>s.


Default Value 6

Unit D

Step


Configuration Polic /f this parameter is set to an e9cessi0e 0alue! there are e9cessi0e 2C>sand insufficient TC>s. This affects C% ser0ices.

/f this parameter is set to a modest 0alue! there are insufficient 2C>sand e9cessi0e TC>s. This affects 2% ser0ices.

Recommended Value 6

ParameterRelations!ip This parameter affects the d"namic 2C> con0ersion as the parameter&a9imum 2C> numbers of carrier does. /f the proportion of 2C>s in

a cell reaches the 0alue of &a9imum 'atio Threshold of 2C>s in a Cell

or the 2C>s on a T'< reaches the 0alue of &a9imum 2C> numbersof carrier! then the TC> cannot be con0erted into the 2C>.




35/53

Caution None

Uplin. Multiple< ,!res!old of Dnamic

C!annel Con1ersion

Parameter Name plin1 &ultiple9 Threshold of "namic Channel Con0ersion

Description This parameter specifies the uplin1 multiple9 threshold of d"namic

channel con0ersion.

5hen the number of subscribers carried o0er the channel reaches the

thresholdE7! d"namic channels are used.


Default Value 4

Unit None

Step


Configuration Polic /f this threshold is high! it is difficult to seiKe d"namic channels.

/f this threshold is low! it is eas" to seiKe d"namic channels.

Recommended Value 4

Parameter

Relations!ip

None



Caution None

Do/nlin. Multiple< ,!res!old of Dnamic

C!annel Con1ersion


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Parameter Name ownlin1 &ultiple9 Threshold of "namic Channel Con0ersion

Description This parameter specifies the downlin1 multiple9 threshold of d"namic

channel con0ersion.

5hen the number of subscribers carried o0er the channel reaches thethresholdE7! d"namic channels are used.

GUI Value Range ,7!*-

Default Value 4

Unit None

Step


Configuration Polic /f this threshold is high! it is difficult to seiKe d"namic channels.

/f this threshold is low! it is eas" to seiKe d"namic channels.

Recommended Value 4

Parameter

Relations!ip

None



Caution None

PDC' Do/nlin. Multiple< ,!res!old

Parameter Name 2C> ownlin1 &ultiple9 Threshold

Description This parameter specifies the 2C> downlin1 multiple9 threshold.

The downlin1 2C> can carr" a ma9imum of (thresholdE7) TB#s.


Default Value *

Unit None

Step


37/53


Configuration Polic /f this parameter is set to a lower 0alue! the TB#s established on the

2C> and the subscribers are fewer! and the downlin1 bandwidth for

each subscriber is higher.

/f this threshold is set to a higher 0alue! the TB#s established on the

2C> and the subscribers are more! and the downlin1 bandwidth for

each subscriber is lower.

Recommended Value *

Parameter

Relations!ip

None



Caution None

PDC' Uplin. Multiple< ,!res!old

Parameter Name 2C> plin1 &ultiple9 Threshold

Description This parameter specifies the 2C> uplin1 multiple9 threshold.

The uplin1 2C> can carr" a ma9imum of (thresholdE7) TB#s.


Default Value @

Unit None

Step


Configuration Polic /f this parameter is set to a lower 0alue! the TB#s established on the

2C> and the subscribers are fewer! and the uplin1 bandwidth for each

subscriber is higher

/f this threshold is set to a higher 0alue! the TB#s established on the


38/53

2C> and the subscribers are more! and the uplin1 bandwidth for each

subscriber is lower.

Recommended Value @

Parameter

Relations!ip

None



Caution None

Alp!a Parameter

Parameter Name Alpha 2arameter

Description This parameter is used for the openloop power control.

The &% uses the Alpha parameter to calculate the output power of the

uplin1 2C>! namel"! 2C>.

5hen the &% uses the $2'% d"namic power control! this parameter

determines the reduced le0el of the &% transmit power mapping to thepath loss.

GUI Value Range ,.!.7!.4!.6!.!.8!.;!.@!.*!.F!7.-

Default Value .;

Unit None

Step



Recommended Value .;

Parameter

Relations!ip

None



39/53


Caution None

Inter(cell '# 'steresis

Parameter Name /ntercell >3 >"steresis

Description This parameter specifies the h"steresis of the hando0er between ad?acentcells at the same la"er.


Default Value

Unit dB

Step


Configuration Polic This parameter is set to a0oid pingpong hando0ers./f the cells are at

different la"ers! this parameter is in0alid. The 0alue of this parameter

needs to be ad?usted according to the statistics of the performance and the

actual networ1.#le9ible ad?ustment of the 0alue has a positi0e effect on

the hando0er and traffic between two ad?acent cells.

Recommended Value /t is recommended that "ou set this parameter to appro9imatel" in

densel"populated urban areas and * in suburban areas.

Parameter

Relations!ip

None



Caution None

Min Access -e1el #ffset


40/53

Parameter Name &in Access +e0el 3ffset

Description This parameter specifies the minimum access le0el offset.


Default Value

Unit dB

Step


Configuration Polic The offset is set based on &in + 2ower on >3 Candidate Cell and &in+ 2ower on >3 Candidate Cell. ifferent offsets can be set for different

ad?acent cells. To become a candidate cell! an ad?acent cell must meet the

following reuirementsH plin1 le0el of the ad?acent cell PJ (&inimum

uplin1 power of the candidate cell for hando0er : &inimum access le0eloffset) ownlin1 le0el of the ad?acent cell PJ (&inimum downlin1 power

of the candidate cell for hando0er : &inimum access le0el offset).

Recommended Value

Parameter

Relations!ip

&in + 2ower on >3 Candidate Cell! &in + 2ower on >3 CandidateCell



Caution None

PBG, '# ,!res!old

Parameter Name 2B$T >3 Threshold

Description This parameter specifies that the 2B$T hando0er to an ad?acent cell

occurs when the difference between the downlin1 le0el of the ad?acentcell and that of the ser0ing cell is greater than 2B$T >3 Threshold./f the

0alue is lower than ;! the hando0er to the ad?acent cell whose le0el is

lower than the ser0ing cell can be performed.

The le0el 0alues to 74@ map to ; dB to ;6 dB.

GUI Value Range ,!74@-


41/53

Default Value ;*

Unit dB

Step


Configuration Polic 'educing 2B$T >3 Threshold ma1es the 2B$T hando0er more

accessible. /f the 2B$T >3 Threshold is set to an e9cessi0el" smaller

0alue! pingpong hando0er ma" easil" occur./t is recommended that "ou

set this parameter to appro9imatel" ;* in densel"populated urban areasand @4 in suburban areas.

Recommended Value ;*

Parameter

Relations!ip

None



Caution None

B: '# Margin

Parameter Name B >3 &argin

Description The hando0er to an ad?acent cell occurs when the difference between the

downlin1 le0el of the ad?acent cell after filtering and the downlin1 le0el

of the ser0ing cell (after power control compensation) P the /ntercell >3h"steresis the B >3 &argin : ;.

The hando0er to the ad?acent cell whose le0el is lower than that of the

ser0ing cell (after power control compensation) can be performed! whenthe /ntercell >3 h"steresis is less than the B >3 &argin.

/t is recommended that "ou set this parameter to appro9imatel" ;F indensel"populated urban areas and @4 in suburban areas.

The le0el 0alues to 74@ map to ; dB to ;6 dB.


42/53


Default Value ;F

Unit dB

Step


Configuration Polic The difference between /ntercell >3 >"steresis and B >3 &argin is

used to filter the candidate cells. /f the B >3 &argin is set to a higher

0alue! the threshold for the candidate cells is lowered! thus an ad?acent

cell is more li1el" to become a target cell for hando0er.

Recommended Value ;F

Parameter

Relations!ip

/ntercell >3 >"steresis



Caution B" default! the 0alue of this parameter is 8 when the data of

&FE&7* B%C is upgraded to the B%C;. &odif" this 0alue to ;FM

otherwise! the hando0er algorithm supported b" this parameter is in0alid.

Ad5acent Cell Inter(laer '# 'steresisParameter Name Ad?acent Cell /nterla"er >3 >"steresis

Description This parameter specifies the hando0er h"steresis between the cells at

different la"ers or of different priorities. The h"steresis is used to restrictthe pingpong hando0er between la"ers.

/nterla"er >3 threshold of a ser0ing cell J configured /nterla"er >3

Threshold /nterla"er >3 >"steresis

/nterla"er >3 Threshold of an ad?acent cell J configured /nterla"er >3Threshold : /nterla"er >3 >"steresis of an ad?acent cell ;.


Default Value ;@

Unit +e0els


43/53

Step



Recommended Value ;@

Parameter

Relations!ip

None

BSC "eature None


Caution None

GPRS C!annel Priorit ,pe

Parameter Name $2'% Channel 2riorit" T"pe

Description This parameter specifies the =$2'% priorit" t"pe of a channel. /t ta1es

effect when the channel t"pe is 2TC> or TC># in the embedded 2C

mode!or the channel t"pe is 2TC> or YN 2TC> in the e9ternal

2C mode.

5hen this parameter is set to $2'% channel! the &%s accessing the

networ1 through =$= ser0ices cannot occup" this channel.

5hen this parameter is set to =$2'% normal channel! the &%s accessing

the networ1 through $2'% and =$= ser0ices can occup" this channelwith the same priorit".

5hen this parameter is set to =$2'% priorit" channel! the &%s accessing

the networ1 through =$= ser0ices occup" this channel with the highest

priorit".

5hen this parameter is set to =$2'% special channel! the &%s accessing

the networ1 onl" through =$= ser0ices can occup" this channel.

GUI Value Range ,$2'% Channel!=$2'% Normal Channel!=$2'% 2riorit"

Channel!=$2'% %pecial Channel!Non$2'% Channel-

Default Value Non$2'% Channel


44/53

Unit None

Step



Recommended Value Non$2'% channel

Parameter

Relations!ip

None

BSC "eature $2'% and =$2'%


Caution None

Po/er -e1el

Parameter Name 2ower +e0el

Description This parameter specifies the transmit power le0el of the T'


45/53

Configuration Polic Ad?ust the cell co0erage area b" configuring the 2ower +e0elM howe0er!

when the antenna is o0er high and co0ers too man" cells! "ou should

lower the antenna and increase the tilt of the antenna first. 5hen thetransmit power of a BT% reduces! the indoor co0erage becomes worse.

$enerall"! for cells of the same priorit" in a networ1! the power le0elconfiguration should ensure that the =/'2s of the cells are basicall" the

same.

5hen configuring the power le0el! "ou should note that different T'

from the cabinet top output power of the BT%.

Therefore! through the setting of this parameter! a finer step can bepro0ided for ad?usting the cabinet top output power of the BT%.

GUI Value Range ,. dB!.4 dB!. dB!.; dB!.* dB!7. dB!7.4 dB!7. dB!7.; dB!


46/53

7.* dB!efault-

Default Value efault

Unit .4 dB

Step


Configuration Polic /f this parameter is set to a too great or too small 0alue! the cabinet top

output power of the BT% is different from the T'< output power!

resulting in the failure of channel allocation.

Recommended Value efault

Parameter

Relations!ip

None

BSC "eature None

Parameter Class 2arameters About =uipment

Caution None

Po/er ,pe

Paramet

er Name

2ower T"pe

Descript

ion

This parameter specifies the power le0els supported b" a T'


47/53

ration

Polic

Recom

mended

Value

None

Paramet

er

Relation

s!ip

None

BSC

"eature

None

Paramet

er Class

2arameters About 'adio 'esources

Caution None

,C' Rate Ad5ust Allo/

Parameter Name TC> 'ate Ad?ust Allow

Description This parameter specifies whether a cell can con0ert full rate channels tohalf rate channels! or con0ert the half rate channels to full rate channels.

/f this parameter is set to Yes! the con0ersion is allowedM if the parameter

is set to No! the con0ersion is not allowed. the TC># that has beencon0erted to the TC>> will be forcedl" restoredM the TC>> that has been

con0erted to the TC># will be forcedl" restored.

This parameter also specifies whether the channel supports the d"namic

ad?ustment priorit" in the channel assignment algorithm. /n the channelassignment! the channels on the T'< not supporting the d"namic

ad?ustment are assigned first! to ensure the channels on the T'


48/53

Step



Recommended Value No

Parameter

Relations!ip

None



Caution None

Po/er "inetune

Parameter Name 2ower #inetune

Description This parameter specifies the followingH Currentl"! when the B%C

performs the static power control on the T'

reducing the power of the T'< is 4 dB. /n some scenarios! the T'< has

different losses if it is combined on different tributaries! and the output

power difference before and after the combination is not an integralmultiple of 4 dB. Thus! the cabinet top output power of the BT% cannot

be ad?usted in the step of 4 dB! so the T'< output power ma" be differentfrom the cabinet top output power of the BT%.

Therefore! through the setting of this parameter! a finer step can bepro0ided for ad?usting the cabinet top output power of the BT%.

GUI Value Range ,. dB!.4 dB!. dB!.; dB!.* dB!7. dB!7.4 dB!7. dB!7.; dB!

7.* dB!efault-

Default Value efault

Unit .4 dB

Step


Configuration Polic /f this parameter is set to a too great or too small 0alue! the cabinet top

output power of the BT% is different from the T'< output power!


49/53

resulting in the failure of channel allocation.

Recommended Value efault

Parameter

Relations!ip

None

BSC "eature None

Parameter Class 2arameters About =uipment

Caution None

U- :ual0 ,!res!old

Parameter Name + ual. Threshold

Description This parameter specifies the uplin1 ualit" threshold of an emergenc"

hando0er. An emergenc" hando0er due to bad ualit" is triggered whenthe uplin1 recei0e ualit" is greater than or eual to the + ual.

Threshold.

5hen an emergenc" hando0er is triggered! an intercell hando0er should

be preferentiall" selected. An intracell hando0er! howe0er! is triggered ifno candidate cell is a0ailable and if intracell hando0ers are allowed.

GUI Value Range ,!@-

Default Value 88

Unit None

Step


Configuration Polic The setting of this parameter affects the triggering of B hando0er of

nonA&' calls. /f it is set to a lower 0alue! the uplin1 B hando0er iseasil" triggered.

Recommended Value 5hen freuenc" hopping or T< of the cell is enabled! it is

recommended that "ou set this parameter to 88.

Parameter

Relations!ip

None


50/53



Caution None

U-:ua-imitAMR'R

Parameter Name +ua+imitA&'>'

Description The 0alue of this parameter corresponds to multipl"ing ualit" le0el to

@ b" 7. An emergenc" hando0er can be triggered onl" when the uplin1

recei0e ualit" of the &% is greater than the 0alue of this parameter.


Default Value 88

Unit None

Step



A&' >' calls. /f it is set to a too small 0alue! the uplin1 B hando0er iseasil" triggered.


Parameter

Relations!ip

None



Caution None

U-:ua-imitAMR"R

Parameter Name +ua+imitA&'#'



51/53

@ b" 7. An emergenc" hando0er can be triggered onl" when the uplin1

recei0e ualit" of the &% is greater than the 0alue of this parameter.


Default Value ;

Unit None

Step



A&' #' calls. /f it is set to a too small 0alue! the uplin1 B hando0er is

easil" triggered.

Recommended Value ;


None



Caution None

D-:ua-imitAMR"R

Parameter Name +ua+imitA&'#'


@ b" 7. An emergenc" hando0er can be triggered onl" when the


52/53

downlin1 recei0e ualit" of the &% is greater than the 0alue of this

parameter.


Default Value ;

Unit None

Step



A&' #' calls. /f it is set to a too small 0alue! the downlin1 B hando0er

is easil" triggered.

Recommended Value ;


None



Caution None

D-:ua-imitAMR'R

Parameter Name +ua+imitA&'>'

Description The 0alue of this parameter corresponds to multipl"ing ualit" le0el to@ b" 7. An emergenc" hando0er can be triggered onl" when the

downlin1 recei0e ualit" of the &% is greater than the 0alue of this

parameter.


Default Value 88

Unit None

Step



53/53


A&' >' calls. /f it is set to a too small 0alue! the downlin1 B

hando0er is easil" triggered.


Parameter

Relations!ip

None



Caution None

Documents

DUAL Band Optimisation.doc