4.LTE Overview 65

8/18/2019 4.LTE Overview 65

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LTE Overview


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Objects

After the course,you will: Know Mobile Network Evolution Know LTE Protocol Stn!r!

Mster the LTE Architecture

"n!erstn! LTE Key Technolo#y

Mster the eNo!e$ %unction

Know &TE LTE Solution


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'ontent

Mobile Network Evolution

LTE Architecture n! $enefits

LTE Key Technolo#y &TE LTE Solution


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(rivers of Mobile Network Evolution

Wireless Internet - A New Paradigm for Mobile Communication

Profitability

User E!erience"#e!endency

$ig %ransition


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Evolution Tren! of Mobile Technolo#y

2G 2.5G 2.75G 3G 3.5G 3.75G 3.9G

GPRS EDGE eEDGE

HSDPA

R5

HSUPA

R6

MBMS

4G

MC-HSPA

MBMS

cdma 2000

EV-DO

EV-DO

Rev. B

02.!6 e 02.!6 m

HSPA

HSPA"

R7

#DD

$DD

4G

GSM

#D-

SCDMA

%CDMA

R99

02.!6 d

cdma !& cdma 2000

UMB

'#E

EV-DO

Rev. A

Multi)Stn!r!s 'oe*ist : O%(M, O%(MA n! M+MO, bsic technolo#ies in !ifferent stn!r!s, re

e-loye! in ulti wireless ccess technolo#y.

Multi)fre/uency 'oe*istence: More fre/uency bn!s re vilble n! stn!r!i0e!.

Mobile $ro!bn!: +ncrese s-ectru utili0tion1 re!uce the cost of wireless !t services1 re!y for

ultie!i)bse! services.


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Evolution of S-ee!


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Technolo#ies2 'o-rison

& E A% U'E

#A% A'A% E

( %

AN#A'#

)(PA*

# WC#MA

MIM+ ,.AM #/

$W0 1M)2

3Mb!s #/343 1M)2

5561Mb!s U/ 1M)2

37786 .9

9: s!ectrum

5,.AM U/

/%E

# +MA

MIM+ ,.AM

56 ; 9 ; 1 ; 57 ; 37M)2

517Mb!s #/343 37M)2

WiMA?@

%## +MA

MIM+ ,.AM

$W0 5631 37M)2

,969,Mb!s #/343 57M)2

38633Mb!s U/343 57M)2

3771653

New s!ectrum


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Or#ni0tions Le!in# in LTE Ecosyste

N:MN

9:PP/(%I(tandard


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Key 3e/uireents

EnBanced

Coverage

Peak #ata 'ate

#/

577Mb!s

U/

17Mb!s

/ess /atency

CP 577msUP

1ms

/ess +PE?and CAPE?

ariety of$andwidtB

EnBanced(!ectrumEfficiency


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'ontent


/%E ArcBitecture and $enefits

LTE Key Technolo#y

&TE LTE Solution


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(:i

(

(9

(5-MME

PC'&

(<

(,a

)((

(57

UE

:E'AN

U%'AN

(:(N

/%E-Uu

E-U%'AN

MME

(55

(1

(erving:ateway

P#N:ateway

(5-U

+!eratorDs IP (ervices

>e6g6 IM( P(( etc6@

'*

PC'&0 Policy and CBarging 'ules &unction

)((0 )ome (ubscriber (erver MME0 Mobile Management Entity

LTE4SAE Syste Architecture Evolution


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E)"T3AN Structure

MME " (-:W MME " (-:W

(5

Mobility Management (erving :ateway

Interface between

MME"(:W F eNode$

EPC

E-

U%'AN

Interface between

eNode$s

Node $

'NC

* GeNode$

EP(

+nly one Node in E-U%'AN H eNode$

Evolved Packet Core H EPC

Evolved Packet (ystem H EP(

&leible band widtB

)igBer s!ectrum efficiency

)igB !eak rate /ower latency

eNode$

?3?3

eNode$

eNode$

?3


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E"T3AN4EP' %unction Mo!ule


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eNo!e$ %unction

eNode$

'adio 'esource Management

Com!ression and encry!tion

(election MME

'outing

(cBeduling and transmission

Measurement and measurementre!orting

C(: Bandling


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MME %unction

MME

NA( signalling

A( (ecurity control

Idle mode UE 'eacBability

%racking Area list management

P#N :W"(erving :W"MME"(:(N

'oaming

AutBentication


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S56 %unction

(:W

Mobility ancBoring

E-U%'AN idle mode downlink !acketbuffering and initiation

/awful Interce!tion

Packet routeing and forwarding

%rans!ort level !acket marking

U/ and #/ cBarging !er UE P#N


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P(N 56 %unction

P#N :W

Per-user based !acket filtering

/awful Interce!tion

UE IP address allocation

%rans!ort level !acket marking in tBedownlink

U/ and #/ service level cBarging

gating and rate enforcement

#/ rate enforcement based on AM$'


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'o-re the Architecture of LTE with 75

+- network

PSTN

M56

M5'%

P4+4S)'S'%

MME

P(N)56

S)56

55SN

S5SN

5MS'

MS'48L3

3N'

No!e $

3N'

P'3%

9SS

No!e $

+u

eNo!e $ eNo!e $

S:

PS 'SEP'

E)"T3AN "T3AN

;<

'N

3AN

+MS


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M(C(

M:W

::(N

(:(N

)/'

Node $Node $ eNode $eNode $ MME"-:W

Integrates CN F !artial'NC functions

WC#MA")(PA /%E &lat (tructure

eNode $

&ull function of Node $

and maJor function of

'NC

%lt n! +P)bse! Network Architecture for LTE

MME -:W

EPC

)((PC'&

IP $ackbone

WitBout 'NC

• 'e(( )*ve(+me*+

• Ea(, ma)*+e*a*ce

• Redce +a*(m)(()/*

dea,

• Be++e e)a1))+,

IP $ackbone

RC RC

&lat network structure and IP-based network can reduce

tBe %C+ of /%E network6


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LTE 'hrcteristics

Higher Peak Data Rate:Instantaneous data rate of

150Mbps for downlink and

50Mbps for uplink in 20MHz

Higher pe!tru" #$!ien!%: &'

( ti"es of HDP)* 2'& ti"es ofH+P)

,le-ible pe!tru" )llo!ation:

!alable !hannel bandwidth

!on.guration* upport both

,DD / DD

etter usiness #-perien!e:

ower laten!% with less than

5"s in ideal !onditions

# Highlights# Highlights

3,DM Modulation 4()M

# 6e% e!hnologies# 6e% e!hnologies

# Re7uire"ents# Re7uire"ents


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# #')

Evolution Pth of LTE Stn!r!s

R8 R9 R10 R11

o far* initial!o""er!ialdeplo%"ents are"ainl% based onR8R8 !an ful.ll the re7uire"ents of initial

!o""er!ialization;

R10 is a !o"plete


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LTE %re/uency n! $n!wi!thE)"T3AN $n! "L: eNo!e $ receive, "E trnsit (L: eNo!e $ trnsit, "E receive (u-le*

Mo!e%

"L=low – %

"L=hi#h%

(L=low – %

(L=hi#h

>


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Stron# n! 9elthy LTE +n!ustry 'hin

&>PP 3rg?Partners

@hipsetPro


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LTE $enefits for O-ertors n! "sers

User E!erience KA'PU Investment Protection

'euse of

Sites n!infrstructure

$ckhulin#

%re/uency bn!s

/ow Cost !er Mb!s (calable bandwidtB

9: )(PA )(PA* /%E

cost !er Mb!s

)(PA /%E )(PA /%E

%BrougB!ut /atency

+!timi2ed s!ectrum usage


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LTE Enriches the Mobile Services

M/1)e B/ad1a*d Ca*e( +e $+e ')e

Mobile Eil

Neteetin#

9( 8i!eo

'onference

8i!eo on

(en!

Online 5e

9( vi!eostrenin#

Mobile

Sho--in#

Mobile $nk

Mobile Stock

8i!eo Shrin#

8i!eo $lo#

8i!eo 'ht

+nfortion

M o b i l e

+ f f i

c e

M o b i l e C o m

m u n i t y

M o

b i l e

E n t e

r t a i n

m e n

t M o b i l e $ u s i n e s s

/%E im!roves user e!erience by BigB ca!acity

Luick res!onse BigB data-rate and better .o(6


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LTE +-roves $ro!bn! A--lictions

/ive ideo" ideo $logging

#/ ,-8Mb!s"U/ 3Mb!s

)# ideo (treaming >


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LTE +nvestent 6orl! M-


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'ontent


LTE Architecture n! $enefits

/%E ey %ecBnology

&TE LTE Solution


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LTE

（O%(MGM+MOG+P）

LTE enhnce! technolo#y: O%(M, M+MO

5

（ %(MA）


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LTE Key Technolo#y Overview

O%(M M+MO

AM'

9A3H

'hnnel Sche!ulin# n! %st Sche!ulin# +'+' I+nter 'ell +nterference 'ncelltionJ


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Link A!-tive Technolo#y

Link !-tive technolo#y cn be reli0e! by two etho!s: -ower control n! !t s-ee! control.

Norlly, the link !-tive technolo#y is !t s-ee! c

ontrol. +n LTE, it is the A!-tive Mo!ultion n! 'o!in

# technolo#y. AM' cn ke eNo!e $ !uly !just o!ultion o!eIHPSK, DHAM, DCHAMJ n! co!in# r

te ccor!in# to chnnel sttus which is fee! bck by "

E.

%or the lon#)!ely -cket !t, AM' cn i-rove thesyste c-city but no interference to the nei#hbor c

ell.


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Power control can avoid inner-cell usersO interference

T* Power 'hnnel Hulity (t S-ee!

(yniclly !just T* -ower, intin the receiver2s SN3, conse/uent

ly #urntee link trnsission /ulity.

6hen the chnnel con!ition becoes worse, it nee!s incresin# T* -o

wer1 when the chnnel con!ition becoes better, it nee!s re!ucin# T*

-ower. Then this cn #urntee the invrible trnsission !t s-ee!

.

Link A!-tive Technolo#y)Power 'ontrol


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Link A!-tive Technolo#y)AM'

Tie (oin)AM'

%re/uency (oin )AM'

S-ce (oin)AM'

Mo!ultion o!e

!-tive

'o!in# s-ee!

!-tive

Mke the best of chnnel con!ition

to trnsit user !t $etter 'on!ition： use hi#her s-ee!

trnsit user !t

6orse 'on!ition： use lower s-ee!

trnsit user !t


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T* Power 'hnnel Hulity (t S-ee!

To ensure link /ulity cn be reli0e! by !justin# o!ultion o!e

n! co!in# s-ee! when the T* -ower is not chn#eble. 6hen the chnnel con!ition is worse, choose the lower o!ultion

o!e n! !t s-ee!.

6hen the chnnel con!ition is better, choose the hi#her o!ultion

o!e n! !t s-ee!.

Link A!-tive Technolo#y)AM'

(t control cn ke the best of ll

-ower


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'H+ Mo!ultion 'o!in# s-ee! *?


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9A3H

%E'： %orwr! Error 'orrection A3H： Autotic 3e-et reHuest

9A3H%E'GA3H


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%E' 'ouniction Syste

#isadvantage0

Lower relibility

Lower chnnel !-tive bility

To #urntee hi#her relibility, it nee!s

lon#er co!e. So the co!in# efficiency is

lower, the co-le*ity n! cost re

hi#her.

Advantage0

9i#her syste trnsission efficiency

Autotic error correct, no fee! bck

n! retrnsission

Lower tie !ely

#ata

%ransmission

&EC

Coding

&EC

#ecodingCBannel

#ata

'eceiver


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A3H 'ouniction Syste

#isadvantage0

'ontinuity n! rel)tie bility

is lower

Trnsission efficiency is lower

Advantage0

'o-le*ity is lower

3elibility is hi#her

A!-tbility is hi#her

#ata%ransmission CBannel #ata'eceiver

AC"NAC


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9A3H Mechnis

)A'. combines A'. BigB reliability and &EC BigB efficiency

%E' 'o!in# %E' error verify n! check

After receivin# A'K,

trnsit the ne*t -cket

After receivin# NA'K,

retrnsit the ori#inl-cket

After receivin# the correct

-cket, sen! the A'K.

Otherwise, sen! NA'K.

%orwr!'hnnel

3everse

'ontroller


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9A3H 'hrcteristic

N)Process Sto-)n!)6it 9A3H trnsits n! retrnsits the trnsission block.

(ownlink Asynchronous !-tive 9A3H

A'K4NA'K is trnsitte! by P"''9 or P"S'9.

P(''9 in!ictes 9A3H -ro#r nuber, initil trnsission or re

trnsission.

3etrnsission lwys is lwys sche!ule! by P(''9.

"-link

Synchronous 9A3H 'onfi#ure the *iu retrnsission ties for ech "E.

A'K4NA'K is trnsitte! by P9+'9.


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9A3H) !-tive4non)!-tive 9A3H

The 9A3H -rocessin# is intro!uce! into 75PP fro 3B 9S(PA, n! reus

e! in LTE. eNo!e$ su--orts both 'hse)'obin# I''J 9A3H n! +ncreentl)3e!

un!ncy I+3J 9A3H. '' 9A3H uses the se re!un!ncy version I38J

on# ll the trnsission n! retrnsissions. +3 9A3H uses the !ifferen

t re!un!ncy version I38J on# ll the trnsission n! retrnsission

s, to chieve the *iu cobinin# #in.

The (L 9A3H in LTE is n synchronous !-tive one, which ens the r

etrnsission cn be rrn#e! t ny tie fter NA'K is receive! for lst

trnsission, n! the retrnsission cn use wireless resources !ifferent

with tht of lst trnsission.

eNo!e$ su--orts "L synchronous non)!-tive n! !-tive 9A3H -roc

essin#, which ens the retrnsission hve to occur in !e!icte! sub)fre fter NA'K is receive! for lst trnsission, while the retrnsission c

n use the se or !ifferent wireless resources fro lst trnsission.


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'hnnel Hulity

tie

"ser

"ser<

"ser7

$S vli! chnnel chn#e

%or one resource block, it will select the user with thebest chnnel trnsission con!ition to sche!ule to

*ii0e the syste throu#h-ut.

Multi-user diversity

'hnnel Sche!ulin#IJ


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LTE su--orts chnnel sche!ulin# bse! on fre/uency!oin.

(ownlink： $se! on coonreference si#nl

"-link： $se! on test referencesi#nl

'hnnel Sche!ulin#I


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%st sche!ulin# is nely -cket sche!ulin#. +t ens fst service.

Sche!ulin# Metho!s: T(M, %(M, S(M

(cBeduling Princi!le

'ound 'obin>''@

Ma C"I

Pro!ortional &airness>P&@

%st Sche!ulin#


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%st Sche!ulin#

Pollin# bse! on tie

Pollin# bse! on flu*

M* '4+

P%

Ech user is serve! one by one, n!

hs the se ver#e server tie. $utthe flu* for ech user is !ifferent !ue to

the !iverse environent.

No tter wht kin! of environent the

user is locte! in, the user cn be

serve! one by one n! be #urntee!to #et the se flu*.

Syste will trce the wireless chnnel2s

'4+ of ech user, n! confir the user2s

-riority by '4+ to ensure the serve! user

t ech oent hve the *iu '4+

+nte#rte the etho!s bove, look fter

the ost -ortion users stisfction, n!

#urntee the hi#her syste

throu#h-ut.


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+'+'I+nter 'ell +nterference 'ncelltionJ： Scrblin#

%re/uency)9o--in# Trnsit

$eforin# n! +3'

+nter 'ell +nterference 'oor!intion Power 'ontrol

+'+'


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LTE kes use of se/uence rn!oi0tion to voi! inter cell interfere

nce.

Norlly, scrblin# is fter the chnnel co!in#, n! before the o!ul

tion. +t is bit)scrblin#. P(S'9， P"''9 fort


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+'+') %re/uency 9o--in# Trnsit

LTE su--orts %re/uency)9o--in# trnsission in!ownlink n! u-link, it cn rn!oi0e the inter cell

interference. E*ce-t P$'9, the other !ownlink -hysicl control chn

nel2s resource --in# is relte! with cell i!. P(S'9, P"S'9 n! P"''92s %re/uency 9o--in# tr

nsission is in sub)fre.

P"S'92s %re/uency 9o--in# trnsission h--ens

on# the sub)fres.


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+ncrese the e*-ecte! user2s si#nl stren#th.

(ecrese the interference to the other users.

S-ecilly, if beforin# hs known the loction of the us

er who ws interfere!, it will re!uce the -ower to this locti

on.

+'+')$eforin#

e*-ecte! user

+nterfere! user


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+3' I+nterference 3ejection 'obinin#J

6hen the receiver hs ulti)ntenns, the receiver cn use the

ulti)ntenns to !ecrese the inter)users interference. The -ri

nci-le is to wei#ht the receive! si#nl, restrin the stron# interfe

rence.

downlink u!link

+nterference $STr#et $S

+nterference MS

+'+')+3'


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LTE su--orts sttic +'+' l#oriths. An! there is no lo! infortion e

*chn#e throu#h ;< interfce for sttic +'+'.

$se! on 3S3P esureent on servin# cell n! nei#hborin# cells of

the se fre/uency, "E cn be !ivi!e! into two #rou-s: cell center us

ers n! cell e!#e users. The cell center users, whose receive! si#nl s

tren#then of servin# cell is better thn nei#hbors, re not likely to interf

ere or be interfere! by users in nei#hbor cells1 $se! on cell to-olo#y n! fre/uency !ivision etho! I%rctionl %3 o

r Soft %3J, ll P3$ resources cn be clssifie! into cell e!#e -referenc

e n! cell center !e!icte! P3$s, without overl--in#. These P3$ res

ources cn be llocte! stticlly, or sei)stticlly1

The fre/uency reuse fctor for %rctionl %3 is for cell centrl users,n! 7 for cell e!#e users.

+'+') +nter 'ell +nterference 'oor!intionIJ


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+'+') +nter 'ell +nterference 'oor!intionI


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+nter)'ell Power 'ontrol

To control the tr#et cell +oT by inforin# the +oT to the other cell.

+ntr)'ell Power 'ontrol

'o-enste the -th loss n! sh!ow f!in# to sve the "E trns

ission -ower, try to !ecrese the interference to the other cells, k

ee- the +oT un!er certin level.

+'+')Power 'ontrol

TP'

Tr#et 'ell

Non)Tr#et 'ell

E*-ecte! Si#nl

Overlo! +n!ictor


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Power 'ontrol

Power control is use! in P"S'9, P"S'9 n! S3S. P"S'92 TP' is #iven by P"S'92s sche!ulin# si#nlin#

I('+ fort ?J or ulti-le*e! with other user2s TP'I('+

fort 747AJ. P"''92s TP' is #iven by P(S'92s sche!ulin# si#nlin

#I('+ fort ?J or ulti-le*e! with other user2s TP'I(

'+ fort 747AJ.

S3S hs no s-ecific TP', it borrows P"S'92TP', n!

be infore! the -ower wr- by hi#her lyer.


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'ontent

Mobile Network Evolution LTE Architecture n! $enefits

LTE Key Technolo#y

%E /%E (olution

"nifie! S(3 $se Sttion Pltfor


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"nifie! S(3 $se Sttion Pltfor

Su--ort ulti)o!e4ulti)bn!

5SM4"MTS4'(MA4LTE

??M4((4>??M4@??M4A6S4


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Sooth Evolution fro &TE "ni 3AN $se Stti

on to LTE

C#MA3777 5?

%E (#'

C#MA3777 5?

C#MA3777 E-#+/%E and C#MA

enBancement

U!grade software and add tBe

baseband module

U!grade software and add tBe

baseband module

C#MA3777C#MA3777 5?*E-#+/%E"C#MA Adding tBe baseband module and ''U for

enBanced functions6

%E (#' base stations can be Luickly de!loyed and !rotect carriersO long-term investments6

Cost effective solution

C#MA /%E

C#MA"/%E multi-mode !latform

%E (#' Platform

&TE '(MA LTE Evolution 'se I(ifferent $


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&TE '(MA)LTE Evolution 'se I(ifferent $

n!sJ

C#MA ''U

1M@

Q 577M)2

C#MA

877M $and Class

/%E ''U

&or different bands add ''Us and /%E cBannel units6


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&TE '(MA)LTE Evolution 'se ISe $n!J

C#MA ''U

/%E>1M or57M@

37M)2

C#MA

5=77M $and Class

C#MA and /%E ''U

&or tBe same band sBare tBe ''U and add /%E cBannel units6


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Antenn n! %ee!er Shrin#

C#MA ''U C#MA ''U

877M

AN%


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&TE S(3 Pro!uct %ily

%E (#' Product &eatures

&ull series

Unified Bardware !latform

Multi-mode"Multi-band F smootB

evolution

All IP

Unified network management

:reen network solution

/ow %C+

33 99

SDR RRU SDR B200

SDR BS900A

55

*

SDR BS700

SDR

BS00

11

SDR

BS906


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%le*ible (e-loyent

• 37R97R CAPE? (aving• 97R17R #e!loyment %ime (aving

$$U

In %ransmission 'ackIn $%( 'ack

+n tBe Wall

+n tBe Wall+n tBe !ole

''U

ero foot!rint (mall si2e

&leible de!loyment

Easy installation F maintenance

$$U in any 5= incB rack

$$U F ''U indoor

installed on a standing

!ole

Trnsission Solution


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Trnsission Solution

C#MA

/%E

&iber

Co!!er

Abis

E5"(%M-5":E

:E"57:E

Iub

E5"(%M-5":E

:E"57:E

Microwave

/3 ACC /9"/3 A::

Mobile backBaul >Packet %rans!ort Network @

All mobile scenarios

"ni)trnsission for


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4.LTE Overview 65

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