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LTE Basic Actions for Throughput Troubleshooting

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Page 1: LTE Basic Actions for Throughput Troubleshooting

7/25/2019 LTE Basic Actions for Throughput Troubleshooting

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 Apr. 2006

 Node B Products of Huawei 

LTE Throughput Troubleshooting

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia! "a#e 2

  AQ: LTE Throughput Question

$.Down!in% &UL'"()*i+a! !a)er +e!! (rou#(pu for DD wi( DL -I-O 22 for $0-H/ and 20-H/

L$00 &$0-H/' 1 DL 3-4p* UL 23-4p*

L2600 &20-H/' 1 DL $30-4p* UL 30-4p*

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia!

Main Factors for LTE Throughput  【 Main Factors 】 : Ce!! 5andwid(、-CS、-I-O、 UE Ca、 HSS

  Throughput

Bandwidth RB Number  M!

TB!   M"M#$L %rant

&E at and 'os

① Ce!! 5andwid( 1 5 Nu74er 

② -CS: fre8uen+) effi+ien+)

③ UE Ca 1 Ca9 , Ca: , Ca3 , Ca6;

④ HSS 1 ;o* and UE 7ai7u7 (rou#(pu<

⑤ -I-O

DL=UL Gran

! Tran*7i**ion par

" adio en>iron7en# T" Ser>er 

$  A!ar71 ?SW, (ardware a!ar7@..

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia! "a#e :

LTE Throughput Troubleshooting Overvi

ew

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia! "a#e 3

LTE Throughput for SS

Bandwidth DL %a&imum 'h(ou)h*u' DL target 

+%H- /%0*1 2/%0*1%H- 2/%0*1 /%0*1

Bandwidth UL %a&imum 'h(ou)h*u' UL target 

+%H- /%0*1 3%0*1

%H- +/%0*1 /%0*1

$. Anenna *(ou!d 4e in*i#(.

2. Te* in +e!! +ener&$009007'.

9. S"B3d57 and SINB90d5

:. One u*er on!)

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia! "a#e 6

!"si# $"r"%eter &he#'

"ara7eer +(e+%1

$. S"B3d57

2. SINB90d5

9. "DCCH DL Gran Coun B30

&"DSCH 5 Nu74er=Su4 ra7e

B0'

:. an% Indi+aor i* an% 2

  Tran*7i**ion -ode i* T-9

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia! "a#e

!"si# $"r"%eter troubleshooting

1) RSRP > -75dBm and Average SINR >30dB. If not, chec !e"o# $•4ui56i7)1 05oc8 a76 a7'e77a i1 7o' i71i)h', '(9 'o :76 'o a )oo6 *oi7'.

•Si'e A5a(m, 1uch a1 ;SW<, c5ea( a5a(m1.•I= a7'e77a i1 i71i)h' a76 7o a5a(m, <S<> i1 ?e(9 wea8 , . chec8 *owe( co7:)u(a'io7@+.ma90e a7'e77a u1e w(o7) *o('1 which a(e =o( GU =(eue7c9@•I= <S<> i1 )oo6 , 0u' SIN< i1 0a6, . 'he(e a(e 'oo ma79 i7'(a=(eue7c9 7ei)h0o(1 o('he i7'(a=(eue7c9 <S<> i1 'oo 1'(o7), 'he7 (e6uce 7ei)h0o( *owe( o( :76 a )oo6 *5ace.+. I= 'he 7ei)h0o(1 a(e 6i1e7a05e6, <S<> i1 )oo6 a76 SIN< i1 1'i55 0a6, 'he(e i1 e&'e(7a5i7'e(=e(e7ce, chec8 i7'e(=e(e7ce o7 %+.

%) Ran Ind&cator 'ho("d !e Ran % and ran'm&''&on *ode m('t !e*3. If not , chec !e"o#$•<S<> a76 SIN< a(e 7o' )oo6.•Si'e A5a(m, 1uch a1 ;SW<, c5ea( a5a(m1.•C(o11 =ee6e(, chec8 i= 1ome ce55 i1 a51o ca77o' )o T%3, ma90e i'B1 C(o11 =ee6e(.

3) P+ + /rant o(nt &' !etter greater 50,If not , chec !e"o#$• T(9 'o 6ow75oa6 mo(e :5e1, 7o(ma559 :5e1 a(e e7ou)h.•Si'e A5a(m , 1uch a1 ;SW< , c5ea( a5a(m1.•T> Se(?e( *(o05em, cha7)e a7o'he( 1e(?e( =o( 6ow75oa6i7) o( u*5oa6i7).•U1e( *(o05em, ma90e 1ome u1e(1 a(e 6ow75oa6i7) a' 'he 1ame 'ime. Chec8 o7 %+.•U1e( 'h(ou)h*u' i1 5imi'e6 i7 HSS, Chec8 S '(ace S1APINIIA2N4SPR6

• T(a71mi11io7 5imi'a'io7 Com*a(e Uu Da'a 'e1' wi'h 7o(ma5 6ow75oa6i7).

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Antenn" (e"sure%ent troubleshooting

 d&erence !et#een Antenna0 and Antenna1 'ho("d !e "e'' than 5 dB. If not, hec7)e 'he UE *o1i'io7 a76 '(9 a)ai7c8 <<U 'wo >o(' o( <<U a5a(m1.ie(e7' UE1

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!LE) troubleshooting

BR 'ho("d !e "e'' than 10, a' 'ho#ed &n the trend. If not chec !e"o#$•Chec8 'he A7'e77a %ea1u(eme7' =o( 'wo *o('1•Si'e A5a(m a0ou' ;SW<, chec8 cu((e7' a5a(m.•Chec8 i7'e(=e(e7ce o7 %+.

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(&S troubleshooting

+ P ode0o(nt and + P ode1o(nt are !etter &n%8th,%5th,%9th,%7th,%:th co"(mn'.;or e<am="e &n the =&ct(re, + P ode0o(nt &' %9th,%7th and %:th co"(mn.•'he <S<> a76 SIN< a(e 7o' )oo6. T(9 'o :76 a )oo6 *5ace.• The(e a(e 'oo ma79 i7'(a=(eue7c9 7ei)h0o(1 o( 'he(e i1 e&'e(7a5 i7'e(=e(e7ce

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Overview for LTE oi#e Solution

(hat is the )oice solution for LTE*

  +oLTE &?oi+e o>er LTE ' i* a >oi+e *er>i+e *o!uion for LTE newor%*, in+!udin# +ir+ui *wi+(ed fa!!4a+% &CS5',

I-S &I" 7u!i7edia *u4*)*e7'4a*ed ?oI", and *in#!e radio >oi+e +a!! +oninui) &S?CC'.

(hat are !FB, !R+ and +o"P o>er I-S*

!FB : w(en a UE iniiae* a CS *er>i+e, (e --E in*ru+* (e UE o fa!! 4a+% o (e !e#a+) CS newor%4efore (e UE perfor7* (e *er>i+e. CS5 i* a *e**ion *eup pro+edure. UE* fa!! 4a+% o CS newor%* 4efore

CS *e**ion* are *e up, and (e) a!wa)* *a) in (e CS newor%* durin# (e CS *e**ion*.

  "M!-based +o"P : I-S4a*ed ?oI" i* >oi+e *e**ion* *e up o>er I" newor%* 4eween (e UE and (e I-S.

Here ?oI" i* *(or for I-S4a*ed ?oI".

  !R+ : S?CC i* a *o!uion ai7ed a pro>idin# +oninuou* >oi+e *er>i+e* on LTE newor%*. S?CC i* a

7e(od of inerAT (ando>er. I ena4!e* *7oo( *e**ion ran*fer* fro7 ?oI" o>er I-S on (e LTE newor% o

CS *er>i+e* in (e UTAN or GEAN.

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&S ! to *T)A+

%.//

%01// %01//

&20//-F0

&20//-F2

L01//

L23// L23//

&20//-F2

!FB Redirection to &MT! F0

&-4L based Fast Return

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&S ! to *T)A+

Normall5 if !FB fails, chec6 the 7% neighbors configuration and !FB switch in LTE sites8

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*,L "st )eturn

The Fast Return from &MT! to LTE feature enables a &E to return from an &MT! cell to a LTE cell to 9uic

6l5 when the ! ser)ice or all ser)ices finished8

"f FR fails , chec6 the switch in 7% part on M2///8

08&MT!-to-LTE Fast Return

28Enhanced &MT!-to-LTE Fast Return

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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidenia!

&S ! with (e"sure%ent "n- !lin- h"n-ing

08"f &TRN co)erage is e9ual or better than LTE co)erage, suggest Bling Handing to reduce dela58

28Measurement time is related to the number of 7% fre9uenc5 and neighbors configured in eNodeB8

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HUAWEI TECHNOLOGIES Co., L'6. HUAWEI Co7:6e7'ia5 >a)e F

Than6 ;ou