7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
1/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI ConfidentialPage 1
Security level:Internal
Propagation for LTE Product LTE RRU ChannelTroubleshooting
2011-7-26
LTE Team, Wireless Product Rollout Dept, GTS
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
2/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 2
Radio problems troubleshooting
guide
Characteristics
Values
Matching Versions
Question Feedback
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
3/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 3
Characteristics 1/5
Monitor method for Feeder&antenna problem troubleshooting
1 VSWR Test
2
Oine antenna interfere detect test
Monitor methods for radio interference detection:
1)uplink broaban scannin!
2)"i!# precision pectrum !etection
$)broa ban on-line %re&uency scan
')broa ban o(-line %re&uency scan
Feeder& "ntenna #stem Faults troubleshootingainly to resolve %eeer*s
RTW+ proble,s
Uplin$ %nterference !etection use uplink %re&uency scannin! to eicateinter%erence
Main performance monitor for RRU Channel Troubleshooting:
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
4/11HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 4
Characteristics 2/5Monitor method for Feeder&antenna problem troubleshooting
'()R Test TR ()RTET
.elon! to /ine #i!#- precision VSWR test result only %or RR port VSWR test 3ill use be%ore
4ell 3as acte to c#eck #ar3are install &uality5 3#en VSWR alar, appeare VSWR test 3ill be
use to conr, it
4o,parin! 3it# on-line VSWR test t#is VSWR test is a o(-line test 3as less a(ecte by raio
si!nal
*'Oine antenna interfere detect test TR RFTET
.y control o% RR T po3er observe 3#et#er RTW+ 3as obviously c#an!e urin! test to 8u!e
3#et#er inter,oulation inter%erence 3as e9ist /nly RR port is a TR port it can test
3#et#er inter,oulation inter%erence 3as e9ist5 i% it ;s a T or R port only it is no nee an can
not observe 3#et#er a inter,oulation inter%erence e9ist
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
5/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page
Characteristics 3/5Monitor methods for radio interference detection
' uplin$ broadband scanning
We can observe inter%erence aroun
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
6/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page !
Characteristics 4/5Monitor methods for radio interference detection
*' pectrum !etection +,igh precision pectrum !etection
It is a on-line scannin! to observe inter%erence %or
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
7/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page "
Characteristics 5/5
Monitor methods for radio interference detection
-' pectrum !etection + broad band on+line fre.uenc# scan
4an scan a certain continuous ban 4o,parin! 3it# "i!# precision Spectru, >etection broa
ban on-line %re&uency scan #as a lo3er i(erentiate rate an &uickly spee o% scannin! but#i!#er ban3it#
/' pectrum !etection + broad band o0+line fre.uenc# scan
It is a o(-line scan nee to eactivate cell It can scan RR*s 3#ole ban3it# 4o,parin! 3it#
broa ban on-line %re&uency scan an "i!# precision Spectru, >etection broa ban o(-line
%re&uency scan 3orks slo3ly but support a 3ier ban3it#
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
8/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page #
Values
' %mpro1e test e2cienc# &Reduce ser1ice cost3
!ecrease the number of local test of ()R4
5o need for local interference test4Use MML commands' reduce use rate of sitemaster' sa1e t#e e9pense o%
Site,aster an labor3
*' Reduce re.uest of test tools
Reduce use rate of itemaster and other tools3
Remote test' no need ocal troubleshooting3
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
9/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page $
5et6or$ element AT< e=oe.
version %1&&'&&3C&&SPC3&& and the later version
Name Explain Path
EG()e'AN2.1)LTE
''U C*annel
T+o-le*ooting Gide
S//o+tWi+ele P+od0t LineLTE
((eNodeTe0*ni0al Gide
eNode LT Ue+
Gide
Gide to e LT Pe+fo+5an0e
onito+ing
S//o+tWi+ele P+od0t LineLTE
((eNodee'AN2.1P+od0t
do05entation
Matching Versions
ersion match relationship
!eleant documents
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
10/11
HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 1&
Question Feedback
)ireless 7roduct Rollout !ept LTE team
Ren Milin88-98
renmilin;hua6ei3com
"elcome to propose #our aluable adice on LTE !!$ Channel
Troubleshooting % thank #ou&
7/25/2019 Propagation for LTE Product-LTE RRU Channel Troubleshooting
11/11
T*an6 7o
888.*a8ei.0o5