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BSC3153 Nokia GSM/EDGE BSS, Rel. BSS13, BSCand TCSM, Rel. S13, Product Documentation, .1

D!namic "#i$ Pool %andlin&

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The information in this document is subject to change without notice and describes only the product defined in theintroduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers onlyfor the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced,modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. Thedocumentation has been prepared to be used by professional and properly trained personnel, and the customer assumes fullresponsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuousdevelopment and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity, or performance of thementioned hardware or software products are given “as is” and all liability arising in connection with such hardware or

software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and

the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained inthe document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary byNokia Siemens Networks, eplain issues which may not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. !N N" #$#NT %!&& N"'!(S!#)#NS N#T%"*'S +# &!(+ "* #**"*S !N TH!S -"/)#NT(T!"N "* "* (N0 -()(1#S, !N&/-!N1+/T N"T &!)!T#- T" S2#!(&, -!*#T, !N-!*#T, !N!-#NT(& "* "NS#3/#NT!(& "* (N0 &"SS#S, S/H (S+/T N"T &!)!T#- T" &"SS " 2*"!T, *#$#N/#, +/S!N#SS !NT#**/2T!"N, +/S!N#SS "22"*T/N!T0 "*-(T(, TH(T )(0 (*!S# *") TH# /S# " TH!S -"/)#NT "* TH# !N"*)(T!"N !N !T.

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The wave logo is a trademark of Nokia Siemens Networks "y. Nokia is a registered trademark of Nokia orporation.Siemens is a registered trademark of Siemens (1.

"ther product names mentioned in this document may be trademarks of their respective owners, and they are mentioned foridentification purposes only.

opyright 4 Nokia Siemens Networks 5667. (ll rights reserved.

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Content$

1 ' 3

Content$ 3 (i$t

o) ta#le$ * (i$to) +&ure$ 5Summar! o)can&e$ -Creatin& ad!namic "#i$ool 11Modi)!in& ad!namic "#i$ool 1-Deletin& ad!namic "#i$

ool '1

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(i$t o) ta#le$

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(i$t o) +&ure$

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Summar! o) can&e$

hanges between document issues are cumulative. Therefore, the latest document issue

contains all changes made to previous issues.

n&e$ made #eteen i$$ue$ 50 and *0 Creatin& a d!namic "#i$ ool2

. The note on #TS! and (NS!environments has beenconverted to plain tet.

.*eference to 2+H82Hhas been removed.

.

!nformation on the #-1#9capable

T*:s in the +TSs has beenupdated in section *adio networklimitations.

.The warning has been convertedto a caution.

. The note on creating a new -(2in a 2/ has been converted toplain tet and moved to section+efore you start.

. !nformation on 2acket ontrol/nit ;2/5< 2ooling has beenadded to section +efore you start.

. The heading of step heck thatyou have free (bis interface 2)capacity ;%/2< has beenchanged to heck to which #T92) the (bis interface has beenconnected ;%/2

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Modi)!in& a d!namic "#i$ ool2

.

The note on #TS! and (NS! environments has been converted to plain tet.

.

The note on modifying an eisting -(2 of a 2/ has beenconverted to plain tet.

.

!nformation on 2acket ontrol /nit ;2/5< 2ooling has been added.

.

The commands and eamples have been updated in steps )odify a dynamic (bis pool byadding timeslots to the beginning or end of the pool ;#S)< and )odify a dynamic (bis pool by

removing timeslots from the beginning or end of the pool ;#S)

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Can&e$ made #eteen i$$ue$ *0 and 3'

Some of the limitations listed at the start of hapter @ have been moved to

the description of -ynamic (bis.

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1 Creatin& a d!namic "#i$ oolThese instructions apply to both #TS! and (NS! environments.

Space is reserved from the 2acket ontrol /nit 2ulse ode )odulation

;2/2)< serial line in the order of creation. The pools are rearrangedoptimally to the 2/2) during +ase Station ontroller Signalling /nit

;+S/< restart, )arker and ellular )anagement /nit ;))/< restart, or+S/ switchover.

0ou should not reserve (bis resources for pools that will not be used, as it

will prevent the resources from being allocated for other traffic.

2/ limitations=

.

There can be @A dynamic (bis pools in one logical 2/.

.

!n one logical 2/ there can only be 5CA (bis channels ;including-efault 12*S D #12*S dynamic (bis pool ;#-(2< channels #-(2 channels in one logical

2/. This is because there must also be space for at least @ #12*Schannel for every > #-(2 channels ;C@ #12*S channels D 56>

#-(2 channels E 5CC (bis channels @Akbit8s #-(2 channels.

*adio network limitations=

.

The theoretical maimum number of dynamic (bis pools in a +S is

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@A66. However, the practical maimum is determined by the numberof 2/s in the +S.

.

The maimum siFe for a single #12*S dynamic (bis pool ;#-(2<

area is @5 A> kbit8s 2) timeslots ;>7 #-(2 channels per -(2

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.

Thetheo

retic

almai

mumnum

berof

transceiv

ers;T*

:s<attac

hed

toone

dynamic

 (bispool

is56.

However,

since

T*:

s

using-(2

resource

smust

bealloc

atedto

thesame

 (biseter 

nal2)

circu

it ;#T92)< line with #-(2, the maimum number of T*:s per -(2 is less than 56.

.

The serving 2/ must be the same for all T*:s under one segment ;also includingpossible dynamic (bis pools attached is enabled in a +TS, the +TS must

have #-1#9capable T*:s that are connected to a -(2. The non9#-1# T*:s of that+TS must be 12*S disabled. !f there are #-1# T*:s and non9#-1# T*:s in the

+TS, see more specific instructions in (ctivating and Testing +SS@667B= #12*S and (ctivating and Testing +SS@@677= oding Schemes S9B and S9> under Test and

activate8-ata in the 2- view.

.

!f #tended ell for 12*S8#-1# is enabled in the cell, all the T*:s in the +TSsusing 12*S8#-1# in the segment must be #-1#9capable and must be attached to

the -(2.

.

The non9#-1# T*:s cannot be attached to a -(2.

aution

Sharing the #12*S dynamic (bis pool ;#-(2< between several cabinets may damage thetransceiver or transmission unit ;T*/< hardware. "ne #-(2 resource should not be sharedbetween several base control function ;+< cabinets.

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Note 

"nly#-1#9ca

pable tr ansceiver sar e a

ble to use dynamic (

bis pool ;-(2< resources.

or more information, see

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.

2acket ontrol /nit ;2/< in 12*S8#-1# System eature-escription under eature descriptions8-ata in the 2- view.

.

-ynamic (bis 2ool management in -ynamic (bis under eaturedescriptions8-ata in the 2- view.

Be)ore !ou $tart

%hen creating a new dynamic (bis pool, the +S turns off the 12*S traffic from the logical2/ to which the new -(2 is to be created. The +S downgrades all packet switched traffic

channels from the 2/ and upgrades these traffic channels to packet switched use again. Thisshort interruption ensures that the +S can find a block of free timeslots from the 2/2).

reating a new -(2 in a 2/ causes a reallocation of digital signal processor ;-S2< resourcesin the 2/ between the new and eisting -(2s and 12*S channels. !t also ensures the

optimised 2/ -S2 resource usage for each -(2 connected to a specific 2/. !f 2acketontrol /nit ;2/5< 2ooling is in use and the -(2 is created for a packet service entity ;2S#

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!n +SBi, a physical 2/ plug9in unit is created with two separate elements ;two plug9inunits with their own 2!/8plug9in unit indees in ))&< which can be considered as twological 2/s.

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ZWTI::: ;

Now you can check from the output list if a logical 2/ is configured to +S/96.

!f yes, move on to the net step.

3. Ceck to ic ET0PCM te "#i$ inter)ace a$ #een connected 487P6.

ZWUP;

!n the list you find several #T92)s configured on your system. Select a suitable #T92) where to create the dynamic (bis pool.

*. Ceck tat te ET0PCM a$ $ace )or a d!namic ool 487P6.

ZWUP:::!";

0ou can see free timeslots in the list.

5. Create te d!namic "#i$ ool 4ESE6.

ZESE:####;

or

ZESE:###;

/se the second command if 2acket ontrol /nit ;2/5< 2ooling is used. Note that 2acketontrol /nit ;2/5< 2ooling is a licence9based application software product and requires

a valid licence in the +S. or more information, see &icensing in +S under !nstall and

upgrade8Software in the 2- view.

#ample reating a dynamic (bis pool ;2acket ontrol /nit ;2/5< 2ooling not in use<

reate a dynamic (bis pool whose pool id is @, circuit is #T92) number B5, pool siFe is Atimeslots starting at the fifth timeslot, +S/ inde is 6 and 2/ plug9in unit inde is 5=

ZESI; ZWTI:P:&SU#';

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ZWUP; ZWUP:()::!"; ZESE:I*+,#"T+()–#SIZE+.#&SU+'#PU+);

9urter in)ormation.  (larm B6A7 #12*S -0N()! (+!S 2""& (!&/*# is raised ifthe dynamic (bis pool creationfails for some reason. or moreinformation on the possiblecauses of the failure andrecovery instructions, see ailure2rintouts ;56669BGGG< under*eference8 (larms in the 2-view.

. or instructions on attaching adynamic (bis pool to a T*:, see (ctivating and Testing +SSG66A=12*S under Test and activate8-ata in the 2- view.

.  (ctivating and Testing+SS@667B= #12*S under Test

and activate8 -ata in the 2-view.  (ctivating and Testing

+SS566G>= #tended ell for12*S8#-1# under Test andactivate8-ata in the 2- view

.  (ctivating and Testing

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' Modi)!in& a d!namic "#i$ oolThese instructions apply to both #TS! and (NS! environments.

0ou can modify the dynamic (bis pool ;-(2< siFe or change the

controlling logical packet control unit ;2/< or the packet service entity;2S#< to optimise the use of the pools and shared resources.

0ou can change the controlling logical 2/ of the -(2 if you want to

balance the traffic load between 2/s. %hen 2acket ontrol /nit ;2/5<2ooling is in use, you can balance the traffic load between the 2/s bymoving the -(2 to a new 2S# or with the reallocation command /0/.

%ith the dynamic (bis measurement you can measure the peak and

average usage of the dynamic (bis pool and )S limitations andrestrictions for T+ scheduling. or more information, see ?A -ynamic

 (bis )easurement under *eference8ounters8performance indicators812*S measurements ;2S< in the 2- view.

Be)ore !ou $tart

%hen modifying the dynamic (bis pool, the +S turns off the 12*S trafficfrom the logical 2/ where the modified pool eists. The +S downgradesall packet switched traffic channels from the 2/ and upgrades these trafficchannels to packet switched use again. This short interruption ensures thatthe +S can find a block of free timeslots from the 2acket ontrol /nit2ulse ode )odulation ;2/2)< serial line. )odifying an eisting -(2 of a 2/ causes a reallocation of digital signal processor ;-S2< resources inthe 2/ between the new and eisting -(2s and 12*S channels. !t alsoensures optimised 2/ -S2 resource usage for each -(2 connected to aspecific 2/. !f 2acket ontrol /nit ;2/5< 2ooling is in use and the -(2is moved to a new 2S#, this kind of interruption in the 12*S traffic takes

place in the source 2/ and also in the target 2/ where the 2/selection algorithm attaches the -(2 in the new 2S#.

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Note

0ou must configure dynamic (bis pools of the same siFe and the same timeslots in both the+S and the base transceiver station ;+TS

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)odify the dynamic (bis pool whose id is @ and pool starting from the timeslot A so that youremove three timeslots from the beginning of the pool=

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ZES1:I*+,#4/T+.;

#ample )odifying the dynamic (bis pool

)odify the dynamic (bis pool whose id is @ and pool ending to the timeslot @@ so that youremove four timeslots from the end of the pool=

ZES1:I*+,#45T+,,;

c. Modi)! a d!namic "#i$ ool #! can&in& te BCS7 and tePC7 4ESM6.

 (ll the segments that are attached to the dynamic (bis pool will be moved to thenew 2/.

ZES1:##;

#ample

)odify the dynamic (bis pool whose id is @ so that you change the +ase Station ontrol

Signalling /nit ;+S/< and the logical 2/=

ZES1:I*+,#&SU+,#PU+6;

d. Modi)! a d!namic "#i$ ool #! can&in& te PSE 4ESM6.

 (ll the segments that are attached to the dynamic (bis pool will be moved to the

new 2S#.

ZES1:#;

#ample

)odify the dynamic (bis pool whose id is 5 so that the new packet service entity is B.

ZES1:I*+)#PSEI+(;

9urter in)ormation

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.

 (lar m

B6A

7#12

*S-0N

 ()!

 (+!S

2""&

(!&/*#

is

raised if

thedyna

mic (bis

poolcrea

tionfails

forsom

e

reas

on.ormor 

einfor 

mation

onthe

possible

causes of the

failur e

andreco

very

instructions, see ailure 2rintouts ;56669BGGG< under *eference8 (larms in the 2-view.

.

or instructions on modifying the dynamic (bis pool information of a T*:, see

 (ctivating and Testing +SSG66A= 12*S under Test and activate8-ata in the 2-view.

.

 (ctivating and Testing +SS@667B= #12*S under Test and activate8 -ata in the 2-view

.

 (ctivating and Testing +SS56@6A= 2acket ontrol /nit ;2/5< 2ooling underTest and activate8-ata in the 2- view

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3 Deletin& a d!namic "#i$ oolBe)ore !ou $tart

These instructions apply to both #TS! and (NS! environments.

%hen deleting a dynamic (bis pool ;-(2

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ZES!:I*+; #ample -eleting one dynamic (bis pool= ZES!:I*+,;

-eleting several dynamic (bis pools= ZES!:I*+,76778;

9urter in)ormation

 (larm B6A7 #12*S -0N()! (+!S 2""& (!&/*# is raised if the dynamic (bis pool creationfails for some reason. or more information on the possible causes of the failure and recoveryinstructions, see ailure 2rintouts ;56669BGGG< under *eference8(larms in the 2- view.