4_Frequency Planning.ppt

7/18/2019 4_Frequency Planning.ppt

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Frequency Planning

&

Neighbor Cell PlanningISSUE1.0




Chapter 1Cha

pter 1 Basic knowledgeBasic knowle

dge

Chapter 2Chapter 2 Frequency planningFrequency planning

Chapter 3Chapter 3 Frequency hoppingFrequency hopping

Chapter 4 Neighbor Cell PlanningChapter 4 Neighbor Cell Planning




Content of Basic knowledge

Frequency resource o !"# syste$Frequency resource o !"# syste$

%equire$ent or carriertointererence ratio%equire$ent or carriertointererence ratio

"ignal quality grade coding"ignal quality grade coding




Channel 'nter(al ： 2))k*+

1,1) 1,-. 1-). 1--)

Duplex distance : /. #*+

-/) /1. /3. /0)

Duplex distance : 45 !"

!"# /))

!"# 1-))

#$e%uenc& 'esou$ce of (S S&ste)




#$e%uenc& Band Configu$ation

!"#/))：

B*S $ecei+e$ ,uplink -: f1（ n）＝ /0＋ n0. !"

B*S t$ans)itte$ ,downlink -: f（ n）＝ f1（ n）＋ 45 !"

!"#1-))：

B*S $ecei+e$ ,uplink -: f1（ n）＝ 1210＋（ n－ 511） 0.

!"

B*S t$ans)itte$ ,downlink -: f（ n）＝ f1（ n）＋ /5 !"




'e%ui$e)ent fo$ Ca$$ie$3*o3Inte$fe$ence 'atio

ll useful signals carrier

ll useless signals intererence

(S standa$d: co3c6annel C 7 I 8 / dB

In p$actical p$o9ects: C 7 I 8 1dB

Useful signal oise f$o) en+i$on)ent

;t6e$ signals

C7I


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'<=U> ean BE' BE' $angeclass ,?- f$o)... to

0 0.14 @ 0.?

1 0. 0. ... 0.4 ?

0.52 0.4 ... 0. ?

A 1.1A 0. ... 1. ?

4 . 1. ... A. ?

5 4.5A A. ... .4 ? /.05 .4 ... 1. ?

2 1.1 8 1. ?

#ai$l& good

Intole$ale

(ood

cceptale

Signal =ualit&

'ecei+ing %ualit& ,'<=U> pa$a)ete$-

>e+el of $ecei+ing %ualit& ,0 ... 2-

Bit e$$o$ $ate efo$e decoding and e$$o$ co$$ection




=uestion1 ' %FCN is /0

what is the corresponding requency (alue

' the requency (alue is /)/5-# in uplink

what is the corresponding channel nu$ber

' %FCN is 12-，

which band does it belong to !"#/)) or 1-)) or neither

' the requency resource is 0#

how $any channels are there

i no requency reuse how $any subscribers can access

network at the sa$e ti$e




Chapter 1Chapter 1 Basic knowledgeBasic knowledge



Chapter 4 Neighbor Cell PlanningChapter 4 Neighbor Cell Planning




Chapter 2 Frequency planningChapter 2 Frequency planning

251251 Concept o requency reuseConcept o requency reuse

252 Nor$al requency reuse

253 6ight requency reuse




Concept of #$e%uenc& 'euse

fif9..fkFac$o3cell s&ste)

ic$o3cell s&ste)

d

$euse

fif9..fkF fif9..fkF fif9..fkF55 55

$euse




*6e 'eason of #$e%uenc& 'euse

#$e%uenc& $esou$ce is li)ited. If t6e$e is !" f$e%uenc& $esou$ce

Case 1No requency reuse

!" 40 c6annels G ti)eslots A0

8 )ax. A0 use$s can access t6e netwo$k at t6e sa)e ti)e.

Case 2Frequency reuse

If eac6 f$e%uenc& ca$$ie$ is $eused fo$ n ti)es t6en A0Gn use$s can

co))unicate at t6e sa)e ti)e. ,*6e actual $elation is )o$e t6an nti)es.-




Frequency Reuse induce Co-channel interference

H$ole) of #$e%uenc& 'euse

17

% 5 D7' 5 , A k -

6

γ q

I

C =

fn

fn

fnfn

fn

fnfn

R D

Interference coming from 6 co-channel cells

At the cell boundary, the interference is

severe

6)1(

γ

−=

q I C




>oose$ $euse

!ig6e$ f$e%uenc& $euseefficienc& ut inte$fe$ence

is se$ious. o$e tec6ni%ue

Is needed.

*ig6te$ $euse

0 10 0

>ittle inte$fe$ence ut f$e%uenc&

$euse efficienc& is low.

'euse Densit&

'euse densit& is t6e nu)e$ of cells in a asic $euse

cluste$.

4GA： 1

nG)： nG)

n: B*S nu)e$ in a asic $euse cluste$

): #$e%uenc& g$oup nu)e$ in a B*S

1




Capability

7uality 'ntererenceBit error

8i$ited by

Balance

Frequency resource Frequency reuse





251 Concept o requency reuse

252252 Nor$al requency reuseNor$al requency reuse

253 6ight requency reuse




4GA #$e%uenc& 'euse

1C1

B1

912

3B2

B3

C2

C392

93

1

C1

B1

912

3B2

B3

C2

C392

93

1

C1

B1

912

3

B2

B3

C2

C392

931

C1

B1

912

3

B2

B3

C2

C392

93

1C1

B1

912

3B2

B3

C2

C392

93

1C1

B1

91

2

3B2

B3

C2

C392

93

4 B*SA cells7B*S1 cells const$ucta cluste$




Illust$ation of #$e%uenc& llocation of 4GA

#$e%uenc& 'euse




4GA f$e%uenc& use

1C1

B1

912

3B2

B3

C2

C392

93

1

C1

B1

912

3B2

B3

C2

C392

93

1

C1

B1

912

3

B2

B3

C2

C392

934)

42

41

4344

30

4.

3,

34

3-3.

3/

1C1

B1

9123

B2

B3

C2

C392

93

1

C1

B1

91

2

3B2

B3

C2

C392

1

C1

B1

912

3B2

B3

C2

C392

9393

.2

.4

.3

...0

4-.,

4/

40

.)4,

.1

4GA is no$)al f$e%uenc& use BCC! planning )ust use 4GA





251 Concept o requency reuse

252 Nor$al requency reuse

253253 6ight requency reuse6ight requency reuse




*ig6t #$e%uenc& 'euse *ec6nolog&

1 、 #ultilayer reuse pattern :#%P;

2、 1<3

3、 1<1

4、 =nderlaid and o(erlaid cell




ulti3la&e$ 'euse Hatte$n




B!" n1

#!1" n$

#!$" n%

…

#!m-1" nm

n1≥n$≥n%≥n&≥''''''≥ nm

And n1n$'''nmn

ulti3la&e$ 'euse Hatte$n




ulti3la&e$ 'euse Hatte$n J

Consecuti+e #$e%uenc& llocation Suppose that the available frequency carrier is

10MHZ, channel number is 46～ 77, the Multi

layer reuse pattern shoul! be"




Layout Layout




BCCHBCCH




TCH Layer 1TCH Layer 1





TCH L 3








ulti3la&e$ 'euse Hatte$n 3

Inte$+al #$e%uenc& llocation

BCC! *C!1 *C! *C!A *C!4

>13.55523?

>1234.5554)?

>245522245554)?




cap N BW

re use

i

i

'=−

∑

d+antages of ulti3la&e$ 'euse Hatte$n

Capacit& inc$ease w6en $euse densit& is )ultiplied: Su""si#g there are $%% cells

&a#dwidth' ( )H* +% -reue#c/0

o$)al 4GA $euse: $euse densit&1

netwo$k capacit& 4071 G A00 1000 *'<

ultiple $euse:

BCC! la&e$: $e3use 14 ,14 f$%.-

o$)al *C! la&e$: $e3use 10 ,0 f$%.-

gg$essi+e *C! la&e$: $e3use , f$%.-

etwo$k capacit& ,1 K K1-G A00 100 *'<




1GA f$e%uenc& $euse

Cell configu$ation is ad+anced wit6 t6e sa)e

f$e%uenc& $esou$ce

Cell 'adius is t6e sa)e， 'euse distance isdec$eased Inte$fe$ence is en6anced.

Le need use ext$a tec6nolog& to $esist

inte$fe$ence w6ile using 1GA f$e%uenc& $euse

1GA9

%

4GA 9

%

Co)pa$e 1GA f$e%uenc& $euse wit6 4GA $euse




(ene$al Unde$la& ;+e$la&

*6e inne$ ci$cle co+e$s a s)alle$ a$ea and t6e

f$e%uenc& can e $eused )o$e tig6tl&.

@(erlaycell=nderlaycell

@(erlaycell=nderlaycell

9

r %




BCC! 15f 'egula$ 4f Supe$ 1f

BCC! 'euse densit&: 15

' *C! *'< $euse densit&: 1

S *C! *'< $euse densit&:

Intelligent Unde$la& ;+e$la&

Supe$ fn

'egula$ f)

'egula$ f)

Supe$ fnSupe$ fn







Chapter 4 Neighbor cell planningChapter 4 Neighbor cell planning




Chapter 3 Frequency hoppingChapter 3 Frequency hopping

351351 d(antage and class o hoppingd(antage and class o hopping

352 *opping para$eter

353 *opping application




#$e%uenc& 6opping $efe$s to t6e $egula$ 6opping of

ca$$ie$ f$e%uenc& wit6in ce$tain $ange

Concept of #$e%uenc& !opping

……

Bn AA nBn1 AA n1

B1 AA 1

B=%"6




d+antages of !opping

B4 B3 B2 B14 3 2 1

432

1

!o**ing is a s*ecial fre+uency diversity

(et an ag$eeale $adio

en+i$on)ent.

H$o+ide a si)ila$

co))unication %ualit& fo$

e+e$& use$ .

*ig6te$ $euse patte$ns

a$e possile to e used

fo$ la$ge$ capacit&

1

1




Class of !opping

Class acco$ding to t6e wa& of i)ple)entation Base3and 6opping

'# 6opping

Class acco$ding to t6e )in 6opping ti)e unit

*i)eslot 6opping

#$e%uenc& c6anges e+e$& ti)eslot.

#$a)e 6opping

#$e%uenc& c6anges e+e$& *D f$a)e.




Base Band !opping H$inciple




'# !opping H$inciple





351 d(antage and class o hopping

352352 *opping para$eter *opping para$eter

353 *opping application

!opping Ha$a)ete$s L6 t N




!opping Ha$a)ete$s *opping $ode: t6e )ode used & t6e B*S s&ste) including t6$ee options: not

6opping ase and 6opping and '# 6opping.

# ,oile llocation Set-: t6e set of a+ailale f$e%uenc& w6en 6opping containing

at )ost 4 f$e%uenc& ca$$ie$s. *6e f$e%uenc& eing used )ust e t6ose of t6e

a+ailale f$e%uenc&

*"N： 6opping se%uence nu)e$ （ 0～ A） . !S0： c&cle

6opping!SM0： $ando) 6opping. E+e$& se%uence nu)e$ co$$esponds a

pseudo $ando) se%uence.

#'@ ,oile llocation Index ;ffset-: used to define t6e initial f$e%uenc& of t6e

6opping.

6"C: s6ould e set consistent wit6 BCC

L6at N




!opping Ha$a)ete$s

ll t6e pa$a)ete$s w6ic6 a$e $elated to 6opping a$e configu$ed

in cell7configu$e !opping data

L6e$e N





351 d(antage and class o hopping

352 *opping para$eter

353353 *opping application*opping application




Exa)ple of 1GA #$e%uenc& 'euse

"uppose /)) band /0～ 124

B6" coniguration ： "333

BCC* layer ： /0～ 1)/ reuse pattern ： 4<3

6C* layer ： 11)～ 124 reuse pattern ： 1<3




*C! Consecuti+e llocation Sc6e)e

I;

#1 110 111 11 11A 114 0

#2 115 11 112 11 11/ 0

#3 10 11 1 1A 14 0

1

A

Cell1

Cell2Cell3

1

A

Cell1

Cell2Cell3

1

A

Cell1

Cell2Cell3




*C! Inte$+al llocation Sc6e)e

I;#1 110 11A 11 11/ 1 04

#2 111 114 112 10 1A 1A

#3 11 115 11 11 14 0

1

A

Cell1

Cell2Cell3

1

A

Cell1

Cell2Cell3

1

A

Cell1

Cell2Cell3




Co)pa$e two llocation Sc6e)e

Diffe$ent +alue

； Diffe$ent I; +alue

；

Unde$ !" and

， Consecuti+e llocation suppo$t

)ax site t&pe SA7A7A（ t6eo$eticall&）， w6ile Inte$+al llocation suppo$t )ax t&pe S47A7A；

Consecuti+e llocation is usuall& used in u$an a$ea

L6ile Inte$+al allocation is usuall& used in town and

count$&.

In o$de$ to dec$ease t6e infe$ence etween diffe$ent

B*S It is ette$ to keep t6e cell a"i)ut6 consistent




Co)pa$ison Between ulti3la&e$ $euse and 1GA

#o$ ulti3la&e$ $euse patte$n eit6e$ Base and 6opping o$ '# 6opping

can e used. But fo$ 1xA $euse onl& '# 6opping can e used.

*6e f$e%uenc& planning fo$ t6e 1xA )ode is si)ple and it is eas& to plan

t6e f$e%uenc& fo$ new added B*S.

1xA )ode $e%ui$es a $at6e$ $egula$ B*S location dist$iution.

#o$ t6e cells wit6 fixed nu)e$ of *'< w6en t6e t$affic is 6ea+& t6e 1xA

p$o+ides 6ig6e$ se$+ice %ualit& t6an t6at of ulti3la&e$ $euse patte$n.

*'< can e easil& added to t6e 1xA netwo$k ut *'< nu)e$ of 6opping

s6ould not exceed t6e p$oduct of t6e allocated 6opping f$e%uenc&nu)e$ and t6e )ax '# load $atio.

BCC! of ulti3la&e$ $euse patte$n can take pa$t in t6e f$e%uenc&

6opping w6ile BCC! in 1xA )ode can not.




#$e%uenc& Hlanning H$inciple

*6e$e s6ould e no co3c6annel f$e%uenc& ca$$ie$s in one B*S.

*6e f$e%uenc& sepa$ation etween BCC! and *C! in t6e sa)e cell s6ould

e not less t6an 400O.

L6en f$e%uenc& 6opping is not used t6e sepa$ation of *C! in t6e sa)e

cell s6ould e not less t6an 400O.

In non31GA $euse )ode co3c6annel s6ould e a+oided etween t6e

i))ediatel& neig6o$ B*S.

eig6o$ B*S s6ould not 6a+e co3c6annels facing eac6 ot6e$ di$ectl&.

o$)all& wit6 1GA $euse t6e nu)e$ of t6e 6opping f$e%uencies s6ould e

not less t6an twice of t6e nu)e$ of f$e%uenc& 6opping *'< in t6e sa)ecell.

Ha& close attention to co3c6annel $euse a+oiding t6e situation t6at t6e

sa)e BCC! 6as t6e sa)e BSIC in ad9acent a$ea.

Exa)ple of #$e%uenc& Hlanning




.


n exa)ple netwo$k in a specific place B*S a$e densel& located. *6e

topog$ap6& is plain. *6e )axi)u) B*S configu$ation is SA7A7

Initial planning:





#inal f$e%uenc& planning:







Chapter 4 Neighbor cell planningChapter 4 Neighbor cell planning




L6&

*ando(er is based on the neighbor relationship.

Disting proble$ o neighbor planning

o neig6o$ $elations6ip no 6ando+e$

Co3BCC! and co3asic etween ad9acent cells lead to 6ando+e$

failu$e.

$edundant neig6o$s

)issing neig6o$




eig6o$ Cell Desc$iption

#here are table $%1 an! table $%&'

#able $%1 !escribes $((H frequencies of the

a!)acent cells to be measure! *hen the MS is in i!le

mo!e'

#able $%& !escribes $((H frequencies of the

a!)acent cells to be measure! *hen the MS is in

!e!icate! mo!e'

#here are t*o +in!s of neihbors

idi$ectional neig6o$s

unidi$ectional neig6o$s

$i!irectional neihbors are common, an!

uni!irectional neihbors are use! in special

con!ition, such as overshootin




B

A

A

1 The sig#als - cell A cvers s!e areas -ar awa/ -r! this

cell. It is vershti#g.

1 Whe# )S !ves -r! this area twards & a#d C

i# dedicated !de, the sig#al is wrse a#d wrse.

1 si#ce cell & a#d C is #t the cell A2s #eigh3r,

call dr" will ccur 4#all/.

1 There are three sluti#'

1 Ad5ust the dw#tilt - the a#te##a

1 Ad5ust the tra#s!itti#g "wer - the &TS

1 Add & a#d C as the #eigh3r - cell A, # #eed t add

A t & a#d C, that is u#idirecti#al #eigh3r.

+!a6e sure that there are # c7&CCH a#d c7&SIC i# #eigh3r

list0

;+e$s6ooting and Unidi$ectional eig6o$




6he cells o cosite $ust be set as neighbor cells

6he cells conronting directly $ust be added to neighbor list

6he cells acing toward the sa$e direction should be neighbors

*6e cells s6ooting & t6e o$iginal cell *6e cells s6ooting at t6e o$iginal cell

6he cells one site apart ace to ace should be neighbor cells5

eig6o$ Hlanning H$inciple




De)onst$ation ,ideall&-

cosite cell(onfrontin cell

same !irectional cell

one site apartface to face cell

-riinal cell



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4_Frequency Planning.ppt