OMF007001 Frequency Planning Training 20060601 a 1.4

7/25/2019 OMF007001 Frequency Planning Training 20060601 a 1.4

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OMF 007001

Frequency PlanningISSUE1.4


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HUAWEI TECHNOLOGIES CO., LTD. Page 2All rights reserved

Chapter 1Cha

pter 1 Frequency planningFre

quency planning

Chapter 2Chapter 2 Tight frequency reuseTight frequency reuse

Chapter 3Chapter 3 Frequency hoppingFrequency hopping


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Content of Frequency planning

Frequency resource of SM syste!

"equire!ent for interference an# carrier$to$interference ratio

Signal quality gra#e co#ing

Concept of frequency reuse4%& frequency reuse


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SM '00 (

SM 1)00 ( 1710 17)* 1)0* 1))0+uple, #istance ( '* M-

)'0 '1* '&* '/0

+uple, #istance ( 4* M-

Frequency "esource of SM Syste!


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Frequency an# Configuration

SM'00(

S recei2er 3uplin 5( f1 3n5 6)'0. 8 3n$15%0. M-

S trans!itter 3#o9nlin 5( f 3n5 6f1 3n5 84* M-

SM1)00(

S recei2er 3uplin 5( f1 3n5 61710. 8 3n$*1 5 % 0. M-

S trans!itter 3#o9nlin 5( f 3n5 6f1 3n5 8'* M-


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:ll useful signals carrier :ll useless signals interference6

SM stan#ar#( C ; I


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"equire!ent for Interference an# Carrier$ o$Interference "atio

:ll useful signals carrier :ll useless signals interference6

SM stan#ar#( C ; I



Effect of Interference

+ecrease of signal quality

it error

@"eco2eraAle( c?annel co#ingB error correction

@Irreco2eraAle( p?ase #istortionSyste! interference !o#el

@UnAalance#( uplin interference #o9nlin interference

@ :sy!!etrical( t?e interference is #ifferent at t?e MS an#

S en#s



"D U: Mean E" E" rangeclass 3G5 fro!... to0 0.14 H 0. G1 0. ) 0. ... 0.4 G

0.*7 0.4 ... 0.) G& 1.1& 0.) ... 1./ G4 . / 1./ ... &. G* 4.*& &. ... /.4 G/ '.0* /.4 ... 1 .) G7 1).1 < 1 .) G

Fairly goo#

IntoleraAle

oo#

:cceptaAle

Signal uality

"ecei2ing quality 3"D U: para!eter5

e2el of recei2ing quality 30 ... 75

it error rate Aefore #eco#ing an# error correction


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fiBf=..f J

fiBf=..f J fiBf=..f J fiBf=..f J.. ..

Macro$cell syste!

#Micro$cell syste!

Concept of Frequency "euse


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?e "eason of Frequency "euse

Frequency resource is li!ite#. If t?ere is )M- frequencyresourceB ) M- 6 40 c?annels % ) ti!eslots 6 & 0 66< !a,. & 0 users can access t?e net9or at t?e sa!eti!e.


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ooser reuse

-ig?er frequency reuseefficiencyB Aut interference

is serious. More tec?nique

Is nee#e#.

ig?ter reuse

0 10 0

ittle interferenceB Aut frequency

reuse efficiency is lo9.

"euse +ensity"euse #ensity is t?e nu!Aer of cells in a Aasic reusecluster.

@ 4%& 1

@ n%! n%!

@n( S nu!Aer in a Aasic reuse cluster

@!( Frequency group nu!Aer in a S


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[fn]

[fn]

D

[fn]

R

"euse of a frequency causes t?e co$c?annel interference

ProAle! of Frequency "euse


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Interference 3C;I5 Esti!ation

( )

6

1 =

q

I

C

1;7

q 6 +;" 6 3 & 5


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"

+

?is ol#$fas?ione# frequency #istriAution!o#e is not reco!!en#e#

Frequency "euse Patterns

Purpose( to !ini!i e t?e interference in t?e 9?ole net9or 9it?t?e final frequency allocation plan

?eoretically

@"egular ?e,agon cell

@"egular net9or #istriAution

@Cell cluster

@Multiple,ing #istance

+ 6 " %sqrt3&%K5


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A1C1

B1D1

A2

A3B2

B3

C2

C3D2

D3

A1C1

B1D1

A2

A3B2

B3

C2

C3D2

D3

A1C1

B1

D1A2

A3B2

B3

C2

C3D2

D3 A1C1

B1D1

A2

A3B2

B3

C2

C3D2

D3

A1C1

B1D1

A2

A3B2

B3

C2

C3

D2D3

A1C1

B1D1

A2

A3B2

B3

C2

C3D2

D3

4%& Frequency "euse


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Illustration of Frequency :llocation of 4%&Frequency "euse


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Chapter 1Chapter 1 Frequency planningFrequency planning

Chapter 2Cha pter 2 Tight frequency reuseTight frequency reuse

Chapter 3Chapter 3 Frequency hoppingFrequency hopping


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ig?t Frequency "euse ec?nology

Multi$layer reuse pattern

Un#erlai# an# o2erlai# cell

1%&

1%1


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Multi$layer "euse Pattern


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BCCH: n1

TCH1: n2

TCH2: n3

TCHm-1: n m

n1 n2 n3 n4 ...... nm

And n1 n2 ... n m!n

Multi$layer "euse Pattern


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Multi$layer "euse Pattern Frequency :llocation

Suppose t?at t?e a2ailaAle frequency carrier is 10M-LB c?annelnu!Aer is 4/ '4B t?e Multi$layer reuse pattern s?oul# Ae(


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CC- C-1 C-7 C-& C-4

If1Bf&Bf*...f7&J

If1Bf7Bf&Bf4Bf*...f40J

If7Bf4..f77Bf74...f40J

Multi$layer "euse Pattern Frequency :llocation


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cap N BW re use

i

i

.=

:#2antages of Multi$layer "euse Pattern

Capacity increase 9?en reuse #ensity is !ultiplie#(Supposing t?ere are &00 cells

an#9i#t?( ) M- 340 frequency5>or!al 4%& reuse( reuse #ensity61

66< net9or capacity 6 40;1 % &00 6 1000 "D

Multiple reuse(CC- layer( re$use 614B 314 frq.5

>or!al C- layer( re$use 610B 3 0 frq.5 :ggressi2e C- layer(re$use 6 /B 3/ frq.5

66< >et9or capacity 6 31 8 815% &00 6 1 00 "D


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cap N BW re use

i

i

.=

:#2antages of Multi$layer "euse PatternCapacity increases 9?en reuse #ensity is !ultiplie#(

Supposing t?ere are &00 cells

an#9i#t?( ) M- 340 frequency5

>or!al 4%& reuse( reuse #ensity61

66< net9or capacity 6 40;1 % &00 6 1000 "D

Multiple reuse(CC- layer( re$use 614B 314 frq.5

>or!al C- layer( re$use 610B 3 0 frq.5

:ggressi2e C- layer(re$use 6 /B 3/ frq.5

66< >et9or capacity 6 31 8 815% &00 6 1 00 "D


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?e inner circle co2ers a s!aller areaB an# t?efrequency can Ae reuse# !ore tig?tly.

Un#erlai#;O2erlai# Frequency :llocation

O2erlai#$cellUn#erlai#$cell


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Super fn

"egular f! "egular f!

"egular f!

Super fn

CC- 1*f "egular 4f Super 1 f

CC- "euse #ensity( 1*

" C- "D reuse #ensity( 1

S C- "D reuse #ensity( /

O2erlai#;Un#erlai# Frequency Configuration

Super fn


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CC-148 C-&/

1 CC-8& C-

1 CC-8& C- 1 CC-8& C-

1 CC-81 C-

1 CC-81 C- 1 CC-81 C-

1*3 1*1

1%& an# 1%1 "euse Patterns


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"D1 "D ... "D7

"D) "D'... "D14 "D1* "D1/... "D 1

"D1 "D ... "D7

"D) "D'... "D14 "D1* "D1/... "D 1

?e re# ite!s are CC- "Cs

Illustration of 1%& C- Frequency :llocation


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Frequency Planning Principle

?ere s?oul# Ae no co$c?annel frequency carriers in one S.?e frequency separation Aet9een CC- an# C- in t?e sa!e cell s?oul#

Ae not less t?an 400K.

N?en frequency ?opping is not use#B t?e separation of C- in t?e sa!ecell s?oul# Ae not less t?an 400K.

In non$1%& reuse !o#eB co$c?annel s?oul# Ae a2oi#e# Aet9een t?ei!!e#iately neig?Aor S.

>eig?Aor S s?oul# not ?a2e co$c?annels facing eac? ot?er #irectly.

>or!allyB 9it? 1%& reuseB t?e nu!Aer of t?e ?opping frequencies s?oul# Ae

not less t?an t9ice of t?e nu!Aer of frequency ?opping "D in t?e sa!ecell.

Pay close attention to co$c?annel reuseB a2oi#ing t?e situation t?at t?esa!e CC- ?as t?e sa!e SIC in a#=acent area.


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.E,a!ple of Frequency Planning

:n e,a!ple net9or in a specific placeB S are #enselylocate#. ?e topograp?y is plain. ?e !a,i!u! Sconfiguration is S&;&;

Initial planning(


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E,a!ple of Frequency Planning@Final frequency planning(


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E,a!ple of 1%& Frequency "euse

Suppose '00 Aan#( '/ 1 4

S configuration( S&;&;&

CC- layer( '/ 10' reuse pattern( 4%&

C- layer( 110 1 4 reuse pattern( 1%&


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roup 1 3M:15( 110 111 11 11& 114 Cell1

roup 3M: 5( 11* 11/ 117 11) 11' Cell

roup & 3M:&5( 1 0 1 1 1 1 & 1 4 Cell&

C- Consecuti2e :llocation Sc?e!e


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C- Inter2al :llocation Sc?e!e

roup 1 3M:15( 110 11& 11/ 11' 1 Cell1

roup 3M: 5( 111 114 117 1 0 1 & Cell

roup & 3M:&5( 11 11* 11) 1 1 1 4 Cell&


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Co!parison et9een Multi$layer reuse an# 1%&

For Multi$layer reuse patternB eit?er ase Aan# ?opping or "F ?opping canAe use#. ut for 1,& reuseB only "F ?opping can Ae use#.

Multi$layer reuse pattern is a gra#ual process for C- frequency planning.In ot?er 9or#sB t?e reuse is rat?er loose in C-1 layer an# it is quite closein t?e last C- layer 3suc? as C-*5. ?e reason for t?is pattern is t?atAase Aan# ?opping is use# in t?e Multi$layer reuse pattern. N?en t?ere arerat?er fe9 frequency carriersB t?e ?opping gain is s!all. ?ereforeB !orefrequency carriers s?oul# Ae allocate# for t?e layer 9it? s!all C- an#t?en t?e reuse coefficient is relati2ely large. N?en "F ?opping is use# int?e Multi$layer reuse pattern an# t?ere are a large nu!Aer of frequency

carriersB t?e ?opping gain is ?ig? an# t?e reuse coefficient can Ae 2erys!all. In a##itionB t?e Multi$layer reuse pattern is of a free pattern. It is#ifferent fro! Aase Aan# ?oppingB in 9?ic? t?e reuse !ust Ae loose in t?efirst C- layer an# !ore close in inner layers.


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Co!parison et9een E,a!ple of FrequencyPlanning an# 1%&

?e frequency planning for t?e 1,& !o#e is si!ple an# it is easy to plant?e frequency for ne9 a##e# S.

1,& !o#e requires a rat?er regular S location #istriAution.

For t?e cells 9it? fi,e# nu!Aer of "DB 9?en t?e traffic is ?ea2yB t?e 1,&pro2i#es ?ig?er ser2ice quality t?an t?at of Multi$layer reuse pattern.

"D can Ae easily a##e# to t?e 1,& net9or B Aut "D nu!Aer of ?oppings?oul# not e,cee# t?e pro#uct of t?e allocate# ?opping frequencynu!Aer an# t?e !a, "F loa# ratio.

CC- of Multi$layer reuse pattern can ta e part in t?e frequency?oppingB 9?ile CC- in 1,& !o#e can not.


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Chapter 1Chapter 1 Frequency planningFrequency planning

Chapter 2Chapter 2 Tight frequency reuseTight frequency reuse

Chapter 3Cha pter 3 Frequency hoppingFre quency hopping


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Content of Frequency -opping

Class of ?opping

:#2antages of ?opping

Para!eter of ?opping

Collocation of ?opping #ata


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Content of Frequency -opping

Class of ?opping

:#2antages of ?opping

Para!eter of ?opping

Collocation of ?opping #ata


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Frequency -opping


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Class of -opping

-opping can Ae i!ple!ente# in t9o 9ays

ase$Aan# ?opping

"F ?opping

Class accor#ing to t?e !in ?opping ti!e unit

i!eslot ?opping

Fra!e ?opping


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ase an# -opping Principle


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"F -opping Principle


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Class of -opping

Fra!e ?opping

Frequency c?anges e2ery +M: fra!e. ?e #ifferent

c?annel of one "D uses t?e sa!e M:IO.

i!eslot ?opping

Frequency c?anges e2ery ti!eslot. ?e #ifferent c?annel of

one "D uses t?e #ifferent M:IO.


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:#2antages of -opping

et an agreeaAle ra#io en2iron!ent.

Pro2i#e a si!ilar co!!unication quality for e2ery user.

ig?ter reuse patterns are possiAle to Ae use# for largercapacity.


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S!oot?en t?e rapi# fa#ing 3"ayleig? fa#ing5

Frequency +i2ersity of -opping


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S!oot?en an# a2erage t?e interference

Interference +i2ersity of -opping


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-opping Para!eters

:ll t?e para!eters 9?ic? are relate# to ?opping are configure#

in cell;configure -opping #ata

-opping !o#e( t?e !o#e use# Ay t?e S syste!B inclu#ing

t?ree options( not ?oppingB Aase Aan# ?opping an# "F?opping.

M: 3MoAile :llocation Set5( t?e set of a2ailaAle "F Aan#s 9?en

?oppingB containing at !ost /4 frequency carriers. ?e

frequency Aeing use# !ust Ae t?ose of t?e a2ailaAle frequency


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+escription of -opping Para!eters

-S> ?opping sequence nu!Aer 0 /& .

-S>60 cycle ?opping.

-S> 0 ran#o! ?opping. E2ery sequence nu!Aer

correspon#s a pseu#o ran#o! sequence.


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-opping Para!eters

M:IO 3MoAile :llocation In#e, Offset5( use# to #efine t?e initial frequencyof t?e ?opping.

e careful to configure t?e M:IO of sa!e ti!eslot in all c?annelsB

ot?er9ise interference occurs.


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+escription -opping Para!eters

:t t?e air interfaceB t?e frequency use# on a specific Aurst is an

ele!ent in M: set. M:I is use# for in#icationB referring to a

specific ele!ent in t?e M: set.

M:I is t?e function of +M: F>B -S> an# M:IO.


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OMF007001 Frequency Planning Training 20060601 a 1.4

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