Chuong 2 Cong Nghe 4G LTE

8/11/2019 Chuong 2 Cong Nghe 4G LTE

1/23

CHNG 2 CNG NGH 4G LTE

2.1 M HNH MNG THNG TIN DI NG 4G/LTE

2.1 Tng quan

LTE (Lng T!"# E$%u&'n )*+& &"',n -' *n0 % &n -n* * &'u *u3n #' -

5G66 )*+& &",n 7, 7+) 8ng + 9u :u ;*ng $? &@ 7A B@ %'u 7, 7+) 8ng

+ -* $ 7a )*Fng &'n I6. LTE % F )*+& &"',n &') Bau Ja + * &*@ng 2G $

5G 7, &'n 7n ung K) #8 7A *K& %Fng &Fng & n*F + #ng *a &u9,n *'n na9.

C+ # &'u &*'& ; *On* Ja LTE a gP#

V H &*@ng )*Q' *R &" &@ 7A 7Sn* 7Fng %n % 1UUM)B $ 7Fng Vu@ng %

WUM)B &"ng >ng &*ng &*


2/23

>ng &:n ;*+ n*au * + ngF' B] -ng &*! ngu9n %j bDMe. n 7n* n9 Z &*,

7F 7'?u *Sn* 7Ang &*! &*' g'an -a &"n %`) ',u. m',u Kn 7n* n9 7F g_' % Kn

7n* &' ngu9n 7Ang 7a ;O* &*8 (&*' g'anY &:n B@0. ! Kn 7n* &' ngu9n &*u`n &'nY &'

ngu9n LTE Z &*, 7F &"on* 9 p -ng %F' &*' g'ani&:n B@. 6*:n &] n* n*K& Ja %F'

&*' g'an &:n B@ 7F g_' % )*:n &] &' ngu9n gP# #A& BZng #ang n &"ng ;*Qng &*h'g'an #A& ;j *'u. n $ Kn 7n* &' ngu9n LTE n* n*K& % ;*@' &' ngu9n gP# 12 BZng

#ang n &"ng &*h' g'an #A& ;*!.

T"u9?n -cn 7a an&!n % #A& &"ng B@ + ng &@ 7A B@ %'u ng +* & "a n*'?u ;n* n Bng ;*' 7'?u;'n * )*t). Tu9 n*'n &"n 7Fng %n LTE *S *R &" #A& an&!n )*+& &a' [E $ #A&Y *a'

*a9 @n an&!n &*u &' !N-!r. vo &* &"n 7Fng %n 7a an&!n *S 7F B] -ng * )*sn

&`) &*u. ! 7& 7F + # &'u ;*+ n*au.

LTE B] -ng 7a an&!n $' +


3/23

6*# $' Ja #ng 4G By a )*J &n A &= + )*:n &"u9?n -cn $< &u9nY &"u9?n -cn

&"ng #ng %z' 7n &`n + 8ng -ng &"n &*'& 7:u u@'. v' 9u :u #A& ;'n &"w )*sn

%) * * &*@ngY n*# 7Q# Q &On* #p $ &On* &*O* 8ng * * &*@ngY + &*n* )*:n

*8 n>ng &"ng #ng By 7F *u3n *+ &*! + *8 n>ng *ung $ #R' *8 n>ng *ung

n9 By 7' -'n * *8 n>ng &"ng 1 %). v' 9u :u n9Y *wng &ngY &Fng 8ng $' 4 )*/# $' *8 n>ng Ja + &*n*

)*:n &"ng * &*@ng #/ng

Hon* $! M< *on* Cau &"u #ang 4G

v' #< *on* &"nY &On* &O* *) * &*@ng 7d 7F g'Q' qu9& &"n %) &"u9?n -cn. C+

* &*@ng B] -ng #ng &O* *L) g'Na + &*'I& D 7:u u@'

iQ# Q &@ 7A -* $ C*8 n>ng Ja #ng %z'

imI& n@' + #/ng ;*+ n*au( #/ng ;*


4/23

iT"u9?n &Q' &"a||' &"n + &u9n &= n' g]'7n 7O* an &n. in* &u9n %Fu %Fng

iC*u9,n 7' -ng - %'u a%% I6

C*8 n>ng 7'?u ;*',n

iCung K) n?n &Qng * &:ng ;& n@' #ng -* $ i'?u ;*',n * &*@ng

.} r+ *'u

.} LFu %Fng

.} rQ #`& (\!u"'&90

.} r'%%'ng

.} M'&9 $ fa#'ng

D* $

Cung K) -* $ B] -ng * ngF' -ung

2.2 C


5/23

Hon* $y .1 m'tn &"w #ng 4G LTE

Hon* .2* &*K9 + ng>n V) g'a &*8 g'a -'n $< &u9n &"ng + [6 ([B!"

6%an! #k& )*ng ngF' B] -ng0 $ C6 (Cn&"% 6%an! #k& )*ng 7'?u ;*',n0. m*+ $'5G [MT\Y LTE ;*n V) g'a &*8 $< &u9n &"ng + #k& )*ng 7'?u ;*',n

(C6 Cn&"% 6%an!0 &= &"n Vu@ng -F' a gP# + %) ffC (fa-' f!Bu"! Cn&"%

7'?u ;*',n &' ngu9n $< &u9n0Y 6DC6 (6a;!& Da&a Cn$!"g!n! 6"&% g'a &*8 *A

& B@ %'u gZ'0Y fLC (fa-' L'n; Cn&"% 7'?u ;*',n %'n ;& $< &u9n0Y MeC (M!-'u#

e!BB Cn&"% 7'?u ;*',n &"u9 n*`) #ng Qn Ja + %) ;*+ n*au $ +* &*8&Fng &+ g'a + %) &' )*Oa !N-!r. C:n %Fu j "ng Ku &"w g'a &*8 )*sn %) &"ng

[E ^ng &Fng &.

Hon* .5. CKu &"w g'a &*8 )*sn %) 7Fng Vu@ng &"ng !N-!r

L) &"n ffC &"n 7Sn* *on* .5 Z n*'# $ *R &" &K& Q + &*J & + *'u g'a


6/23

[E $ !N-!r a gP# + &*J & quQn %j -' 7Ang $ quQn %j ;& n@'. C+ + *'u &=

#k& )*ng 7'?u ;*',n Ja E6C (E$%$!- 6a;!& C"! %R' gZ' &>ng Fng0Y *ng *n 7>ng

;j [E $ n*`n &*Y 7F *u9,n 7n [E qua g'a &*8 \MY MM &*


7/23

)*Q' &* *'n &*J & Te 7, &*# rT\.

m*+' n'# Te 7F &*, *'n &"n *on* .1U

6.5.2. C*u9,n g'a nA' LTE

D' 7Ang Ja [E *S 7F 7'?u ;*',n p' *u9,n g'a ;*' &Pn &' ffC. vo ;*


8/23

Z &*, ;*' [E n# &"ng &"ng &*+' ffCiCNNECTED. C+ *u9,n g'a &"ng Ei

[TfeN 7F Vs9 -=ng &"n + ngu9n & Bau

1. C+ *u9,n g'a 7F #ng 7'?u ;*',n. Ei[TfeN qu9& 7n* ;*' n &*o

*u9,n g'a $ *u9,n g'a 7n < 7O* n2. C*u9,n g'a &*! + ;& quQ 7 Ja [E. C+ ;& quQ 7 $ + + + 7 7F

7'?u ;*',n p' + &*


9/23

[TfeN *a9 -#a2UUU * + -* $ &*' g'an &* $ )*' &*' g'an &*. C*u9,n g'a

g'a + feT 7F 7'?u ;*',n p' * &*@ng &"u9 n*`) nguPn. H &*@ng n9 ;*p' 7:u 7 $

qu9& 7n* *u9,n g'a. C*u9,n g'a g'a + feT % *u9,n g'a ngF &"ng 7Z + &'

ngu9n $< &u9n 7F -n* &"F &"ng * &*@ng 7O* &"F ;*' )*+& %n* *u9,n g'a 7n

[E. vo * &*@ng GEfeN ;*


10/23

6.3. C[ TfC TI NG[N Tf[N DN TfNG LTE

6.6.1. LF' &' ngu9n &"u9?n -cn &"ng LTE

C+ &' ngu9n &"ng LTE Z + ;O* &*F &*' g'anY &:n B@ $ ;*ng &:n on* &*Fng % 1W ;HX *k lYWmHX. T"ng #'?n &*'

g'an + &' ngu9n 7F *'a n* &*n* Ku &"w Bau 7n $ %n n*K& Ja &*' g'an %

;*ung $< &u9n (b"a#!0 1U#BY 7n %F&

#on* ;*ung $< &u9n %' 7F *'a &*n* 1U ;*ung n (\u|"a#!0 1#B $ #R' ;*ung

n 7 *'a &*n* *a' ;*! (T'#! \%&0 UYW #B. T' #8 aY #R' ;*ung 7F 7+n* B@

p' \bN (\9B&!# b"a#! Nu#!" B@ ;*ung * &*@ng0. \bN 7F B] -ng 7, 7'?u ;*',n

+ *u ; &"u9?n -cn ;*+ n*au Z &*' g'an %n *n #A& ;*ung n*F + *u ; * 7A

ngJ Ja &o# g_' $ + *u ; 7, + + &"ng &*+' ;n*.

MA& ;*@' &' ngu9n (fr f!Bu"! r%;0 7F 7n* ng*{a % NfC + BZng #ang n

%'n &') &"ng #'?n &:n B@ $ N[#;j *'u DbT\ibDM &"n 7Fng %n *a9 NBDL;j

*'u bDM &"n 7Fng Vu@ng &"ng #'?n &*' g'an. vo &* #A& ;*@' &' ngu9n a gP#

(N[LeNfC 0 + )*:n &] &' ngu9n &"n 7Fng %n $(ND[ nfr0 + )*:n &] &' ngu9n

&"n 7Fng Vu@ng &"ng #'?n &*' g'an &:n B@. Tng qu+& * #A& ;*@' &' ngu9n $`& %j

7Fng %n ([L0 *k 7Fng Vu@ng a gP# (N[#DL NfC 0Y &"ng 7Z N\9#DL;j

*'u * B@ ;j *'u DbT\ibDM 7Fng %n ([L0 *k B@ ;j *'u bDM 7Fng


11/23

Vu@ng(DL0 &"ng #A& ;*! &*' g'an Z 7A -' ng UYW #B.

C+ &*ng &*


12/23

T*! ;*+' n'# n9 + vfr 7F B) V) )*sn @ %n + ;*@' &' ngu9n (fr0 &* B

* &"u9?n -cn 7F g_' % 6fr (6*9B'a% f!Bu"! r%; ;*@' &' ngu9n $`& %j0.

C+ &*


13/23

TC61U.TB&&WY2B (;*@' DbT &*8 n*K&0Y 144.TB&&4YB (+ ;*@' DbThn %'0.

TC6i!W12TB1YlB (T)i!;j *'u * &*' g'an C6 #p "Ang0.

Hon* .1l. CKu &"w ;*! MA& ;*ung n a gP# *a' ;*! 7A -' ng n*au. MR' ;*! a

gP# B+u *k Q9 ;*@' bDM (7Fng Vu@ng0 *k DbT\ibDM (7Fng %n0 * &"Fng

*) C6 on* &*Fng $ C6 #p "Ang

2.2.@ Au h"ch tBn t4"ng >?

u9 ** &:n B@ * 4G LTE

0ng 6.6 %'& ; + >ng &:n *'n &*' 7F qu9 7n* * LTE. H'n &*' Z 1l

>ng * bDD $ >ng * TDD. MR' ;*' Z &*,Y + qu9 7n* $< &u9n * bDD $

TDD 7F -u9 &"o n*F n*au 7, 7Q# Q B &Fng 7Png &@' 7a g'a *a' * 7A n9.

NZ' *ung + 7k &Q %) $`& %j $ "K& n*'?u + qu9 7n* $< &u9n g'@ng n*au 7@'

$' + >ng &:n nZ' &"nY n*Fng ^ng Z #A& B@ ng' % 7@' $' + 7k &Q $< &u9n Ja

[E. C+ qu9 7n* $< &u9n 7@' $' !N-!r &"ng #A& >ng &:n 7F 7n* ng*{a ;*ng Ja f.

C+ >ng B@ 1W $ 1;*


14/23

0F

1 12UMHXi1U MHX 211U MHX i 21lU MHX bDD2 1WU MHX i 11U MHX 15U MHX i 1U MHX bDD5 1l1U MHX i 1lW MHX 1UW MHX i 1U MHX bDD4 1l1U MHX i 1lWW MHX 211U MHX i 21WW MHX bDDW 24 MHX i 4 MHX MHX i 4 MHX bDD 5U MHX i 4U MHX lW MHX i W MHX bDDl 2WUU MHX i 2WlU MHX 22U MHX i 2U MHX bDD U MHX i 1W MHX 2W MHX i U MHX bDD 1l4Y MHX i 1l4Y HX 144Y MHX i 1lY MHX bDD1U 1l1U MHX i 1llU MHX 211U MHX i 21lU MHX bDD11 142lY MHX i 14W2Y MHX 14lWY MHX i 1WUUY MHX bDD

12 MHX i l1 MHX l2 MHX i l4 MHX bDD15 lll MHX i ll MHX l4 MHX i lW MHX bDD14 l MHX i l MHX lW MHX i l MHX bDD

1l lU4 MHX i l1 MHX l54 MHX i l4 MHX bDD1 1W MHX i 5U MHX U MHX i lW MHX bDD1 5U MHX i 4W MHX lW MHX i U MHX bDD

55 1UU MHX i 12U MHX 1UU MHX i 12U MHX TDD54 2U1U MHX i 2U2W MHX 2U1U MHX i 2U2W MHX TDD5W 1WU MHX i 11U MHX 1WU MHX i 11U MHX TDD5 15U MHX i 1U MHX 15U MHX i 1U MHX TDD5l 11U MHX i 15U MHX 11U MHX i 15U MHX TDD

5 2WlU MHX i 22U MHX 2WlU MHX i 22U MHX TDD5 1U MHX i 12U MHX 1U MHX i 12U MHX TDD4U 25UU MHX i 24UU MHX 25UU MHX i 24UU MHX TDD

A "Ang BZng #ang LTE 7F 7n* ng*{a ng + ;*+' n'# >ng &*ng &*


15/23

ng &*


16/23

r>ng &*ng &*ng &*ng &"ng #A& ;* Qn

&"',n ;*a' &*,Y ng*{a % )*@' *) *& 7Ang $' + BZng #ang LTE %sn `n

1W lW 15YW2U 1UU 1


17/23

2.2.W m &*u`& 7a ang &!n &"ng LTE

5G66 7d *n &*'n 7k &Q *u3n LTE $ u@' n># 2UU. 6*:n %n + n* ;*a'

&*+ $ ung K) &*'& 7d a# ;& &"',n ;*a' $ )*+& &"',n LTE 7, %# * nZ &"p &*n*

* &*@ng -cn 7:u &"ng qu+ &"on* &'n 7n + * &*


18/23

&'n + *'u 7'?u ;*',n &*ng &*ng a. Ng' "a LTE ^ng Z &*, *R &" &@ 7A &= 12U 7n 5WU;#/g' (&*`# *O

%n 7n WUU ;#/g'0.DF' 7s9 &a By Vt& +


19/23

TT

TH.1U

6"!-!" Ma&"'V In-'a&'n *S #a &"`n &'?n #d0 $ 7F )*+& 7' &= 6 an&!n &*! L w)

BZng 7n + an&!n Ja [E.. M< *on* n9 ^ng +) -ng * \[iMIM $hng *p $'

ng' % % &"ng \[i MIM $hng *p ;*


20/23

T"ng 7Z L('0 % #a &"`n ;j *'u 7'?u * &*8 ' ;O* &*F L n*`n 7F Bau B) V) &=

#d $ %)Y /'0 % ;j *'u 7'?u * &*8 ' &"n %) OY OUY1Y...YLi1 % B@ &*8

& %) $ L % B@ %) 'UY1Y...YN"1 % B@ &*8 & ;j *'u 7'?u * &"n %) O n*`n

7F &= B) V) &= #d $ NO% B@ ;j *'u 7'?u * &"n %) O.\au A &'?n #d *Za &a 7 $!& 1V6

) ('0 6VL('0L('0 ('0Y '('0Y...Y )i'('0T

T"ng 7Z 6('0 % #a &"`n ;j *'u &*8 ' ;O* &*F L &"n 6 an&!nY U('0 % ;j *'u &*8 '

&"n an&!n &*8 ) $' )UY1Y...Y 6i1 $ 6 % B@ a#&!nY 6VL('0 % #a &"`n &'?n #d *Za ;O*

&*F 6VL.

v!& 6('0 7F )*sn @ %n %F' + )*:n &] &' ngu9n B@ %'u &*uA

;*@' &' ngu9n 7F Kn 7n* * ;n* B@ %'u 6D\CH. TOn *'u &*u 7 &"n M an&!n&*u Ja [E % #A& $!& 1VM

H.1.2. PV lW tXn hiYu t4"ng S=;I;8 /Zng ung

H.1.2.1. u+ &"on* V] %j &On *'u B@ )*Oa )*+&

G*t) ;n* ;*


21/23

CW0

CW1

Loi bCWC.CW1,..

Gii m

CWQ-1CWQ-1

tXn hiYu ghdp kh$ng gian. u nhine hY thng c` th! t c hiYu nEng gii iu

ch tt hZn nu p Jng V lW thu phi tun t4"ng t4Rng hp ghdp knh kh$ng

gian.

Oii php m thu ti u ch" cc tXn hiYu ghdp kh$ng gian l& p Jng tchtXn hiYu kh ging cfc i T;> ;aimum=>ikblih""U. u nhin t4"ng nhiu

&"Fng *)Y &+* &On *'u ML qu+ )*8 &). vo &* 7d Z #A& B@ 7? VuK& 7, g'Q# 7A )*8

&) * *:u *& + B 7P ML.

M


22/23

Hon* l.5 M+9 &*u MM\Ei\IC

*gun lW khV nhiu lBn lt nh au. 4]c ht m thu gii iu ch #&

gii m% mt t4"ng cc tXn hiYu c ghdp kh$ng gian. Sau ` liYu au gii m%e

nu gii m% jnge c m% h`a li #& cc tXn hiYu thu ( t4/ liYu n& ! l"i D

n`. Sau ` tXn hiYu ghdp kh$ng gian th hai ( c gii iu ch #& gii m% m&

kh$ng D nhiu TXt nht l& t4"ng t4Rng hp lW tongU Doi tXn hiYu th nht #& nu

c gii m% jnge n` c m% h`a li #& c l"i D khi cc tXn hiYu thu

hn %' &"F ;*' &*

*'n g'Q' 7'?u * $

g'Q' #d &On *'u &*8

a. u+ &"on* n9 7F

%k) %' n*'?u %:n *

7n ;*' &K& Q + &On

*'u g*t) ;*


23/23

Hon* l.l. M< *on* &"u9?n -cn \[iMIM @n ]a an&!nY 2 &= #dY @n %) $' #+9 &*u \IC

($y Vung0

Documents

Chuong 2 Cong Nghe 4G LTE