OMO132050 BSC6900 GSM V9R11R12R13 Radio Channel Management Algorithm ISSUE 1.03

7/18/2019 OMO132050 BSC6900 GSM V9R11R12R13 Radio Channel Management Algorithm ISSUE 1.03

1/75

www.huawei.com

Copyright 2011 Huawei Technologies Co., Ltd. All rights reserved.

GSM Radio ChannelAllocation Algorithm and

Parameters


2/75


Foreword

Many kinds of advanced radio resource managementalgorithms are designed and adopted including !"##

C! allocation algorithm in order to improve the

performance of network in di$erent environments

and scenarios.

Page


3/75


%&'ectives

(pon completion of this course you will &e a&le to) Master the main idea of !"## Channel Assignment

Algorithm

Master the parameters of !"## Channel AssignmentAlgorithm

Page!


4/75


Contents

*. !" ## Channel Assignment Algorithm +asic

,. Channel Assignment Priorities and -ata

Conguration

Page"


5/75


Contents


*.* Channel Assignment Procedure

*., Channel Assignment Strategies

*./ -etail Priorities of Channel Assignment Strategies

Page#


6/75


Channel Assignment Procedure

Page$

TRX:0mainBCCH

SDCCH

TCH

SDCCH

TCH

TCH

TCH

TCH

TRX:1SDCCH

TCH

TCH

TCH

TCH

TCH

TCH

TCH

TRX:2TCH

TCH

TCH

TCH

TCH

TCH

TCH

TCH

TRX:3TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

RACH0 Channel Re1uest2Reason3M%C Random Ref.4

AGCH0#mmediate Assi

gnment2Re1uest Ref. S-CC! 5o.4

SDCCH0 CM Service Re1uest2CC C6S54

SDCCH Assignment decision

TCH Assignment decision

SDCCH0 Assignment CM-27C! 5o.4


7/75


Processing of Channel Assignment

Page%

Preprocessing of

Channel Assignment

Yes

Immediate Assignment

Request on RACH

Assignment Request

For TCH on SDCCH

Incoming

Handoer

Hua!ei II Channel Assignment Algorithm

High" #edium and $o! Priorit%

Channel Assignment

Successful&

Postprocessing of

Channel Assignment

'(D

(o


8/75


Channel Assignment Strategies

!" ## channel assignment algorithm is &ased on a rankedselection.

7he following is a default priority0se1uence which can &e

set &y data conguration.

8ach channel9s overall priority is computed. 7he availa&le

channel with highest overall priority2lowest value4 will &e

assigned.

Page&

High Priority

Capability

Priorities

Quality

Priorities

PS Coordination

Priorities

Management

Priorities

Low Priority


9/75


-ata Conguration of Channel AllocateStrategy

Page10


10/75


11/75


-etail Priorities of Channel AssignmentStrategies

Page12

High Priority

Capacity

Priorities

Quality

Priorities

PS Coordination

Priorities

Management

Priorities

Low Priority

PDCH distance priorit%

PDCH num)er priorit%

TS priorit%

Intelligent Po!er

Consumption Priorit%

TR* priorit%

Po!er priorit%

Po!er+saing TR*

priorit%

Histor% record priorit%

Interference Priorit%

Fle, A)is priorit%

A#R priorit%

Different

TR*-.and-TS-#A

priorit%

Channel rate priorit%

Channel rate ad/ustment

priorit%

Frequenc% )and priorit%

I01 priorit%

TR* po!er amplifier

priorit%

main .CCH TR* priorit%


12/75


+it Structures of Channel AssignmentStrategies

Page1

Capacity priorities

S coordination priorities

RSVD

316

PDNM

53

PDIS

20

RSVD

3117

TRX

116

TS

20

!anagement priorities

PA

53

PWR

1512

ICB

16

"#a$ity priorities


13/75


Contents


,. ChannelAssignment Priorities and -ata

Conguration

Page1!


14/75


Contents

,. Channel Assignment Priorities and -ataConguration

,.* Capacity Priorities and -ata Conguration

,.,


15/75


Radio Resource Management 0Capacity Priorities

Page1#

High Priority

Capacity

Priorities

Quality

Priorities

PS Coordination

Priorities

Management

Priorities

Low Priority



TS priorit%

Intelligent Po!er

Consumption Priorit%TR* priorit%

Po!er priorit%

Po!er+saing TR*

priorit%



Fle, A)is priorit%

A#R priorit%

Different

TR*-.and-TS-#A

priorit%



priorit%Frequenc% )and priorit%

I01 priorit%

TR* po!er amplifier

priorit%



16/75


Radio Resource Management 0 CapacityPriorities

Page1$

it Code !ame Con"guration Rule

: P-C!-ynamic P-C! Set to * for dynamic P-C! channel.

%therwise set to :.

*0? R7

Channe

l Rate

Priority

7he highest &it of Rate

priority +it ?thSet to :.

Group call 7C!!

preferentially +it ,nd

Set to :. only when the current channel issingle and its tra@c type is inconsistent it isset to *.

Matching &etween 7C!rate type and call

re1uirement2&it /th and&it *st4

7C!F only orpreferentially

7C!! only orpreferentially

Single ** ::Couple *: :*

#dle 7C!F :: *:

C78 Channel rate ad'ustment priority#f =#CH Rate Ad$ust Allo%> is set to Bes thepriority value is set to * otherwise it is set to:.

CallRequirement

TCH Rate T%pe


17/75

Copyright 2011 Huawei Technologies Co., Ltd. All rights reserved.Page1%

TCH/H

TRX:0BCCH

SDCCH

TCH

SDCCH

TCH

TCH

TCH

TCH

TRX:1SDCCH

TCH

TCH

TCH

TCH/H

TCH

TCH

TRX:2TCH

TCH

TCH/H

TCHTCH/H

TCH

TCH

TCH

TRX:3TCH/H

TCH/H

TCH/H

TCH/HTCH/H

TCH/H

TCH/H

TCH/H

Re%#est &R

TCH/& ' TCH/H 2 id$e ' TCH/H 1 id$e

Re%#est HR

TCH/H 1 id$e ' TCH/H 2 id$e ' TCH/&

Capacity Priorities 0 Channel RatePriority


18/75


Capacity Priorities 0 Channel RatePriority

7he +SC preferentially assigns a halfDrate channel ifany of the following conditions is met

Page1&

Ater (nter)aceAter(nter)ace A*is (nter)aceA*is(nter)ace +m (nter)ace+m(nter)ace

1nl% !hen ,A*is

Reso#rce

Ad-#stment TCHH

nction S.itcis

set toesand the

load of A)is interfacereach certain

threshold

1nl% !hen ,HR

A$$ocation &$ag

is set to pen

and Ater resource

is congested

(on A#R2 load 3

,TCH Tra))ic B#sy

Treso$d45

A#R2,A!R TCH/H

rior A$$o.ed is

set to6 and load3,TCH/H rior Ce$$

7oad Treso$d


19/75


-ata Conguration of Channel RatePriority

Preferentially assigning halfDrate channels &ased onthe Ater resource status

Page20

4

4


20/75


-ata Conguration of Channel RatePriority Preferentially assigning halfDrate channels &ased on

the Abisresource status.

Page21


21/75



Preferentially assigning halfDrate channels &ased on the&mresource status

Page22

4

4

5alue Rang2 67889

5alue Rang2 67:669

&or

A!R

&or

6on8A!R


22/75



Preferentially assigning halfDrate channels &ased on the&mresource status

Page2!

5alue Rang2 67:669 5alue Rang2 67:669

&or (+


23/75


Capacity Priorities 0 Channel RateAd'ustment Priority

Page2"

TRX:9TCH/&

TCH/&

TCH/&TCH/&

TCH/&

TCH/&

TCH/H

TCH/H

TRX:0mainBCCH

SDCCH

TCH/&TCH/H

TCH/H

TCH/&

TCH/&

TCH/&

TRX:1SDCCH

SDCCH

TCH/&TCH/&

TCH/&

TCH/H

TCH/H

TCH/H

TRX:2SDCCH

TCH/H

TCH/HTCH/H

TCH/H

TCH/H

TCH/H

TCH/H

;S!


24/75


-ata Conguration of Channel RateAd'ustment

Page2#


25/75



Page2$


E -CS -CS*:: priority

#f the channel &elongs to' the priority value is set to* otherwise it is set to :.

'is -CS*:: or PCS*:: or GSM?: or GSM?:

or GSM: or GSM0R or GSM08 or GSM0P.

H PCS PCS*:: priority

?: GSM?: priority

?: GSM?: priority

*: : GSM: priority

** R GSM0R priority

*, 8 GSM08 priority

*/ P GSM0P priority


26/75


7RI Capa&ility of Fre1uency +and

and P0GSM 80GSM R0GSM GSM: GSM?: GSM?: PCS*:

:

-CS*:

:

it-!o () (* (( (+ , . /

DCS(++ #R' + + + + + + + (

P-,++ #R' ( + + + + + + +

Page2%

1uter Cell

;S# P+866Inner cell

DCS :


27/75


Fre1uency Resource of GSMSystem

0requencySpectrum

Range1MH23

&plin40requency 5alue

AR0C! Do%nlin40requency5alue

PDGSM:::J*

/JE:Fu2n43:K:.,n *Ln L *,? Fd2n43Fu2n4K?

8DGSM::

:J*

,JE:

Fu2n43:K:.,n

Fu2n43:K:.,2nD

*:,?4

: L n L *,?

H L n L *:,/ Fd2n43Fu2n4K?

RDGSM::

HEJ*

,*JE:

Fu2n43:K:.,n

Fu2n43:K:.,2nD

*:,?4

: L n L *,?

L n L *:,/Fd2n43Fu2n4K?

-CS*:: *H*:J*H

*:J*:

Fu2n43*H*:.,K:.,2nD*,4

*, L n L Fd2n43Fu2n4K

PCS*::*:J**:

*/:J*:

Fu2n43*:.,K:.,2nD

*,4*, L n L *: Fd2n43Fu2n4K:

Page2&


28/75



Page1


*? -(P6&7-ual0use

priority

#his priority is used %hen the dynamic P#algorithm isenabled8#f the channel can either form a channel group or &e used as anindependentchannel the priority value is set to * otherwise the priority valueis set to :.

* C!G 6&7channelgroup priority

#his priority is used %hen the dynamic P#algorithm isenabled8#f the preferred su&cell of the call is a middle su&cell or an underlaid

su&cell and the channel can form a channel group the priorityvalue is set to :. #f the preferred su&cell of the call is an overlaidsu&cell and the channel cannot form a channel group the priorityvalue is also set to :. #n other cases the priority value is set to *.

*E S+C6&7su&cell

priority

#his priority is used in channel assignment in a concentriccell8#f the su&cell on which the channel is located is 'ust the preferredsu&cell of the call or is not a concentric su&cell the priority value is

set to : otherwise it is set to *.


29/75

Copyright 2011 Huawei Technologies Co., Ltd. All rights reserved.Page

P+7


30/75

Copyright 2011 Huawei Technologies Co., Ltd. All rights reserved.Page!

P+7


31/75

Copyright 2011 Huawei Technologies Co., Ltd. All rights reserved.Page"

Dynamic P#

+etter Signal "orseSignal

7ime

7RI 5um&er

7RI 5um&er7ime

+etter Signal"orseSignal

+eyond cellcoverage

+eyond cellcoverage

Signal

Signal


32/75


-ata Conguration of -ynamicP+7

Step*) Cell conguration and maintenanceDchannelmanagement parameter conguration

Page#


33/75


-ata Conguration of -ynamicP+7

Step,) +7S conguration and maintenanceD7RIconguration

Page$


34/75


Capacity Priorities 0 #(% Su&cell Priority

Feature is initiated at any channel change 2immediate

assignment or assignment4 when cell is in fact concentric.

3; For a MS in the inner cell the channels 2S-CC! or 7C!4 of

the inner cell have priority and vice versa

Page%

1uter

CellInner cell


35/75



Page&


*H0

*7P%

7RI power

amplier

priority

#hispriority isused inintelligentpo%erconsumption decrease

::) indicating that the 7RI power amplier isoperational

:*) indicating that the +7S receives the startupresponse and waits for conrmation of the startupstatus

*:) indicating that the +7S waits for a startupresponse

**) indicating that the 7RI power amplier is shutdown

* +7RIMain +CC!

7RI priority

#his priority is used %hen the tight CCH algorithm isenabled8#f the tight +CC! fre1uency reuse algorithm is used and the channelis on the main +CC! 7RI the priority value is set to * otherwisethe priority value is set to :. #f the tight +CC! fre1uency reusealgorithm is not used the priority value is always set to :.


36/75


-ata Conguration of +7RI Priority

Page!0


37/75



Page!1

it CodeCon"guration Rule

,:0,


38/75



Page!2


39/75


Radio Resource Management 0


40/75




41/75



42/75


-ataConguration of !istory RecordPriority

Page!#


43/75




44/75



45/75


-ataConguration of #ntereferencePriority

Page!&


46/75


-ata Conguration of FleN A&is Priority

Page"0


47/75




48/75


-ataConguration of AMR Priority

Speech version

Page"2


49/75


-ataConguration of AMR Priority

Fre1uency reuse mode

Page"

4

4


50/75




51/75


#ntroduction to #+CA

6nterference ased Channel Allocation is a dynamicresource allocation algorithm.

C#R estimation is the &asis of #+CA. And the

precondition is the calculation of path loss &etween

MS and all of the corresponding cells.

+ased on estimated C#R of new call and the inuence

to the eNist call the system will choose a &est

channel for MS.

Page""


52/75


53/75


#mplementation of #+CA

Step*) 8stimate the interference signal strength

Page "$


54/75



Step,) calculate C#R of a new call to &e esta&lished

Page "%

2:*H4

2MA#%C#R4


55/75



Step/) calculate the C#R of each esta&lished call C#RQ-8C3C#RQoldDC#RQnew

"here C#RQ-8CD;decrease in C#R C#RQoldD;C#R of the

esta&lished call &efore the new call is esta&lished

C#RQnewD;C#R of the esta&lished call after the new call is

esta&lished.

Page "&


56/75



Step/) calculate the C#R of each esta&lished call

Page #0


57/75


Step ?) calculate the CR8S CR8S3E/DC#RQnewKMAIC#RQ-8Ci

C#RQnew is the C#R for new. C#RQ-8Ci is the decrease in

the C#R of each esta&lished call due to the esta&lishment

of the new call.

7he MA#% corresponding to the minimum CR8S is

selected as the candidate MA#% for the timeslot to &e

assigned.

Page #1



58/75



Step ?) calculate the CR8S

Page#2

2:*H4


59/75



Step) interference &ased channel allocation

Page #

2:*H4


60/75


-ata Conguration

Page#!


61/75




62/75



63/75


Radio Resource Management 0 PSCoordination Priorities

Page#%

High Priority

Capacity

Priorities

Quality

Priorities

PS Coordination

Priorities

Management

Priorities

Low Priority



TS priorit%

Intelligent Po!er


TR* priorit%

Po!er priorit%

Po!er+saing TR*

priorit%



Fle, A)is priorit%

A#R priorit%

Different

TR*-.and-TS-#A

priorit%



priorit%


I01 priorit%

TR* po!er amplifier

priorit%


R di R M PS


64/75


Radio Resource Management 0 PSCoordination Priorities

Page#&

S coordination prioritiesRSVD

316

PDNM

53

PDI

20


:0, P-#SP-C! distance

priority

7he minimum distance to P-C!. 7he channel thatis the farthest from the P-C! timeslot ispreferentially assigned to the CS service. 7hat is tosay the closer the distance the lower the priority.

/0P-5

M

P-C! num&er

priority

7he num&er of P-C! in the same 7RI. 7he channelon the 7RI with less P-C!s should &epreferentially assigned to the CS services.

PS C di ti P i iti P-C! P i i


65/75


PS Coordination Priorities 0 P-C! Priori

Page$0

TRX:0BCCH

SDCCH

TCH

TCH

DCH

DCH

DCH

DCH

high

lo!

TRX:0BCCH

SDCCH

TCH

SDCCHDCH

DCH

DCH

DCH

TRX:1SDCCH

TCH

TCH

TCHTCH

DCH

DCH

DCH

PDCH (um)er Priorit%PDCH Distance Priorit%

R di R M t


66/75


Radio Resource Management 0Management Priorities

Page$1

High Priority

Capacity

Priorities

Quality

Priorities

PS Coordination

Priorities

Management

Priorities

Low Priority



TS priorit%

Intelligent Po!er


TR* priorit%

Po!er priorit%

Po!er+saing TR*

priorit%



Fle, A)is priorit%

A#R priorit%

Different

TR*-.and-TS-#A

priorit%



priorit%


I01 priorit%

TR* po!er amplifier

priorit%


R di R M t


67/75



Page$2


RSVD

3117

T X

116

T

20

PA

53

PWR

1512

ICB

16


:0, 7S 7S priority+ased on =7RI Attri&utes0Channel Attri&utes07imeSlot Priority> conguration parameter 2valuerang) :JH4.

/0 PA

#ntelligentPower

ConsumptionPriority

According to the =7RI Attri&utes0-eviceAttri&utes0 Priority of Shut -own 7RI>

Conguration parameter> 2value range):JH4.

E0** 7RI 7RI priority+ased on =7RI Attri&utes0-evice Attri&utes07RIPriority> conguration parameter 2value rang):JH4.

-ata Conguration of 7S and PA


68/75


-ata Conguration of 7S and PAPriorities

Page$

5alue Rang2 67


69/75


-ata Conguration of 7RI Priority

Page$!

Radio Resource Management


70/75



Page$"


RSVD

3117

TRX

116

TS

20

PA

53

PW

1512

ICB

16


*,0

*P"R Power priority

7his &it is ena&led only when MM =Cellconguration and maintenanceDcell networkoptimiOation parameter congurationDchannelmanagement parameter congurationDS87 GC8C!MGA-DPower Priority Allowed > is Bes

*E #C+

intelligent

com&iner&ypasspriority

#f +CC! carrier is in -7R( -RR( or -RF( foranother carrier who is in the same cell with this+CC! carrier not attend &ase&and hopping and=#C+ Allowed> in this cell is yes all channel ofwhich is set * otherwise :.

Management Priorities 0 #ntelligent Power


71/75


Management Priorities #ntelligent PowerConsumption Principle

A 7RI running at normal power has higher

priority for assignment than low power ones. As a

result of that prioritiOation a no power 7RI can &e

powered down.

Page$#

TRX:0mainBCCH

SDCCH

TCH

SDCCH

TCH

TCH

TCH

TCH

TRX:1SDCCH

TCH

TCH

TCH

TCH

TCH

TCH

TCH

TRX:3TCH

TCH

TCH

TCH

TCH

TCH

TCH

TCH

TRX:2TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

TCH/H

Hig o.er 7o. o.er


72/75


-ata Conguration of P"R Priority

Page$$

44

44


73/75


-ata Conguration of #C+ Priority

Page$%

44


74/75


Summary

#n this course we have learned !" ## channel assignment algorithm principle

!" ## channel assignment algorithm data conguration

Application should &e rollout &ased on realenvironment.

Page$&


75/75

Than %ou!!!Ehua!eiEcom

OMO132050 BSC6900 GSM V9R11R12R13 Radio Channel Management Algorithm ISSUE 1.03

Documents