常見告警處理流程

BTSCOECHINA

1

DECEMBER

2004常見報警信息及處理MOTOROLACONFIDENTIALPROPRIETARY,

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2002.DRI

ALARM73/7886，87，9192150234，23524321，29，37，74192，193AlarmBTSCOECHINA

15

November

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2002.

Motorola的基站系統(tǒng)有一套完善的報警機制，充分利用報警信息，可有效地提高系統(tǒng)維護效率。

檢查實時Alarm:通過在H2SC上執(zhí)行disp_act_alarm

<site

#>發(fā)現(xiàn)該site此時正在發(fā)生的Alarm信息。Sample自動顯示實時alarm信息

alarm_mode<site#>on

檢查某個載頻的alarm歷史信息。通過在H2SC上執(zhí)行如下命令進入Emon模式（Ctrl+N）Rlogin

<subsystem#><CPU#>TCU_Alarm_Read

All返回H2SC

emon

(Ctrl+D)返回H2SC

MMI（Ctrl+N）Sample1

Sample2DRI

73

&

DRI

78及其產(chǎn)生機理VSWR及其衡量標(biāo)準(zhǔn)BTS發(fā)射通路連接圖告警處理流程BTSCOECHINA

15

November

2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.DRI

73

&

DRI

78及其產(chǎn)生機理BTSCOECHINA

15

November

2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.

DRI

78發(fā)射天線駐波比過高：DUP內(nèi)置電路檢測7/16”射頻頭處的發(fā)射/反射功率，沒有信號發(fā)射時不檢測，接收天線不檢測。過高的VSWR將導(dǎo)致小區(qū)覆蓋半徑縮小、掉話率過高。

DRI

73反射功率過高：發(fā)射通路發(fā)生嚴(yán)重故障將導(dǎo)致此告警。過長時間的高反射將不可避免地?fù)p壞CTU，所以它的檢測周期比DRI

78短。告警產(chǎn)生幾秒鐘后CTU將自動復(fù)位，所以處理故障時需要適當(dāng)降低輸出功率。VSWR及其衡量標(biāo)準(zhǔn)

駐波:當(dāng)天線和CTU的阻抗完全匹配時，信號將最大化地被天線發(fā)射出去。通常是不可能做到完全匹配的，就產(chǎn)生了前向波和反向波，它們組合在一起就形成了駐波。

VSWR駐波比定義：駐波的最大電平和最小電平的比值，它的大小是從1：1到∞:1反射系數(shù)Γ

=

回波損耗

RL

=

,通常以dB表示，也可以作為衡量標(biāo)準(zhǔn)BTSCOECHINA

15

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2002.VSWR及其衡量標(biāo)準(zhǔn)1.13-1.38是VSWR衡量標(biāo)準(zhǔn)16-24dB是相應(yīng)的RL衡量標(biāo)準(zhǔn)告警產(chǎn)生的判定標(biāo)準(zhǔn)是2.61的VSWR或7dB(+/-1dB)的RLBTSCOECHINA

15

November

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2002.DUP7/16”SMACTU2Horizon

II

BTS機柜N-型ANTRXTX天線饋線避雷器及阻抗變換機柜外射頻通路天線射頻尾線7/16”BTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.發(fā)射通路連接圖故障處理流程BTSCOECHINA

15

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2002.必備工具：VSWR測量儀表合適的扭矩扳手筆記本及串口線50歐姆/50w的假負(fù)載故障處理流程BTSCOECHINA

15

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2002.誤告警：由現(xiàn)場維護引起的告警，告警僅出現(xiàn)一次，出現(xiàn)時有

Door

Alarm告警。

短暫出現(xiàn)的告警，可能是由于遮擋物或遮擋信號引起的。

由于相鄰的天線耦合過來過大的反射功率，這是由于天線安裝不正確引起的，要保證1米的間隔。不要輕易更換CTU,通常VSWR告警并不是由它引起的。故障處理流程有DRI

78或DRI

73告警串接VSWR測量儀表在天饋線系統(tǒng)之前，反射功率是否過高？反射功率是否過高是直接將假負(fù)載連在DUP上，檢查告警否更換

DUPVSWR告警檢查SMA射頻線、CTU2以及DUP的SMA連接頭，必要時需更換無VSWR告警使用50歐姆的假負(fù)載代替天饋線是替換前一級部件否有VSWR或DRI

73告警檢查天饋線系統(tǒng)及其連接，必要時需更換沒有告警檢查DUP的VSWR

DRI

78或DRI

73告警是否依然存在完成是否反射功率是否過高否檢查天饋線系統(tǒng)及其連接，必要時需更換是把假負(fù)載連到前一級輸出BTSCOECHINA

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2002.BTSCOECHINA

15

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2002.BTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.故障處理流程BTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.檢查告警CTU2的反射功率：退服CTU2

串接VSWR測量儀表在DUP和天饋線系統(tǒng)之間，確保連接牢固CTU2以最大功率發(fā)射(ts

a

txp

00)讀發(fā)射/反射功率，用alarm_card

cab察看告警

如果VSWR超出容限，alarm_card

cab命令顯示tx

vswr為全1，按照定位VSWR故障步驟定位故障

如果VSWR沒有超出容限，alarm_card

cab命令顯示全1，檢查DUP故障

如果VSWR沒有超出容限，alarm_card

cab命令顯示全0，但有DRI

73告警，可能是由其它原因?qū)е碌母婢?。alarm

card

cabBTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.故障處理流程BTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.定位VSWR故障：關(guān)閉CTU2的射頻輸出(ts

a

txp

0xff)斷開戶外天饋線系統(tǒng)，用假負(fù)載代替CTU2以最大功率發(fā)射(ts

a

txp

00)

檢查VSWR,如果沒有超出容限，可以斷定是天饋線系統(tǒng)故障，通常是天線進水或密封不好如果超出容限，將假負(fù)載向前移一級

檢查VSWR,如果超出容限，逐級向前移假負(fù)載直至定位出故障部件更換故障部件，做工不好的射頻電纜是經(jīng)常出故障部件。故障處理流程BTSCOECHINA

15

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2002.檢查DCF/DDF的故障：關(guān)閉CTU2的射頻輸出(ts

a

txp

0xff)將假負(fù)載直接連在DUP輸出端CTU2以最大功率發(fā)射(ts

a

txp

00)用alarm_card

cab命令檢查告警

如果告警依然存在，更換DUP,否則可能是由其它原因引起的故障處理流程BTSCOECHINA

15

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2002.其他故障原因：關(guān)閉CTU2的射頻輸出(ts

a

txp

0xff)卸下SMA連接電纜，看是否有物理損壞CTU2或DUP的SMA接頭是否有物理損壞輸出端將假負(fù)載直接連在CTU2的射頻輸出端口CTU2以最大功率發(fā)射(ts

a

txp

00)由于DRI

73導(dǎo)致CTU2頻繁重啟，請更換CTUDRI

74

報警BTSCOECHINA

15

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2002.74報警：Cell

Tx

Pwr

Unachievable報警原因：BSC數(shù)據(jù)庫參數(shù)max_tx_bts與收發(fā)器的TX

offset校準(zhǔn)值不匹配?，F(xiàn)象BTSCOECHINA

15

November

2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.當(dāng)出現(xiàn)74報警時，會導(dǎo)致DRI無法進入服務(wù)狀態(tài)（B-U)：DRI

5

0

0DRI

5

1

0D-U

Cell

Tx

Pwr

Unachievable

22/07

16:17:08

NoneD-U

Cell

Tx

Pwr

Unachievable

22/07

16:17:11

None背景原因BTSCOECHINA

15

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2002.CTU2的發(fā)射功率由max_tx_bts與TX

offset值共同決定。CTU2的最大發(fā)射功率在single

mode下比doublemode要高。如果CTU2配置為double

mode,而TX

offset為在

single

mode下校準(zhǔn)并保存的，就有可能出現(xiàn)所期望的發(fā)射功率大于CTU2在double

mode下所能達到的最大功率，因此產(chǎn)生報警。解決方案BTSCOECHINA

15

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2002.將max_tx_bts從0改變到2INS

DRI并在Double模式下重新校準(zhǔn)根據(jù)小區(qū)規(guī)劃，可將mat_tx_bts恢復(fù)到0DRI

86

,87,91

報警BTSCOECHINA

15

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2002.DRI

86報警：輸出功率低DRI

87報警：輸出功率過高當(dāng)以上兩個報警出現(xiàn)時，會導(dǎo)致DRI復(fù)位。如果在十分鐘內(nèi)連續(xù)出現(xiàn)三次，系統(tǒng)會使DRI退出服務(wù)。DRI

91報警：輸出功率偏低，但可繼續(xù)使用?，F(xiàn)象當(dāng)連續(xù)出現(xiàn)三次86，87告警時會導(dǎo)致DRI“Inhibit”BTSCOECHINA

15

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2002.DRI

0

0

0D-UINHIBITED20/03

07:09:19

NoneDRI

0

1

0B-UNO

REASON20/03

01:10:39

RTF

0

0

0解決方法BTSCOECHINA

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2002.請使用3.2Nm的螺絲刀擰緊PA底部的螺釘，以消除以上報警。確認(rèn)系統(tǒng)所使軟件為1670.20或之后版本。如以上措施不能消除該告警，則返修該CTU2DRI

92

AlarmBTSCOECHINA

15

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2004MOTOROLACONFIDENTIALPROPRIETARY,

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2002.

Power

Amplifier

Temperature

High

But

Functioning功放過熱，但還可以工作。DRI

2

0

0

92

FMIC

Untagged

06-14-2022Power

Amplifier

Temperature14:55:08

High

But105

FMIC

Untagged

06-14-2022

Fan(CTU)FunctioningIAS

15

0

0Tray

2

Failure?14:56:28DRI

150BTSCOECHINA

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2002.

DRI

150告警為SURF告警，說明接收通路有問題。產(chǎn)生的原因可能為：CTU2RX接頭與背板連接出現(xiàn)問題

SURF本身出現(xiàn)問題DRI

243

AlarmBTSCOECHINA

15

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2002.

所有轉(zhuǎn)換到D-U：Inhibited狀態(tài)的DRI都會使系統(tǒng)產(chǎn)生一個DRI

243告警，而不會產(chǎn)生其他相關(guān)的告警。

任何一個沒有產(chǎn)生告警，而且不提供服務(wù)的DRI都會導(dǎo)致系統(tǒng)產(chǎn)生243告警。

CTU2中，如果其中一個DRI出現(xiàn)243告警，那么另一個DRI也將會受到影響。DRI

234/235

Alarm234.

DRI:

Active

Link

Connection

Failure235.

DRI:

Standby

Link

Connection

FailureBTSCOECHINA

15

November

2004MOTOROLACONFIDENTIALPROPRIETARY,

Fil