问题 问答题 简答题

某V2基站出现了TS分配失败告警,基站出现LAPD断的情况,试分析造成这一告警的原因和基本处理方法和过程。

答案

参考答案:

TS分配失败的主要原因有:

(1)检查后台配置的BSC和BTS数据是否一致,如果不一致,处理如下:BTS用拨码开关来表示基站的操作维护LAPD时隙,如果后台配置数据与基站的拨码开关表示内容不同,则会引起LAPD不通。

(2)传输存在鸳鸯线(收发交叉接错)当传输中存在鸳鸯线时,从设备现象看,传输正常。由于BSC和BTS都只能检测一根E1上是否收到了信号,对于发送信号并不检测,因此无法通过告警发现传输问题。可以通过分别拔出每端的发送E1同时检查对端是否能接收到信号来判断。BSC下行可以检测远端告警,下行E1线不接时,TIC的指示灯也不会闪。当传输存在鸳鸯线时,由于上下行信号不能正常通讯,基站无法正常启动。

(3)传输中间存在E1时隙分插设备,造成BSC和BTS实际分配不一致时隙分插设备将不同设备使用的E1时隙复用在一条E1,进行透明传输。如果时隙分插设备数据配置错误或设备故障会导致E1中基站所使用的时隙未能正确地透明传送,导致基站LAPD不通。

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                                                              Hotel Icaria Barcelona
Hotel Location
     Hotel Icaria Barcelona is 330 yards from Barcelona's Nova Icaria Beach. It is
located in the Olympic Port area, a 10-minute walk from Ciutadella Park and
Barcelona Zoo. Ciutadella Metro Station is half a mile away, and is just 2 stops
from Barcelona Cathedral (大教堂) and the historic Gothic Quarter.
Hotel Facilities
General Restaurant, 24-Hour Front Desk, Non-Smoking Rooms, Rooms/Facilities for Disabled Guests,
Family Rooms, Luggage Storage, Smoking Area.
ActivitiesSauna, Fitness Centre, Wellness Centre, Table Tennis, Hiking, Cycling, Steam Bath, Outdoor
Swimming Pool.
ServicesMeeting Facilities, Business Centre, Laundry, Dry Cleaning, VIP Room Facilities, Ironing Service,
Fax/Photocopying, Ticket Service.
InternetWi-fi is available in the entire hotel and is free of charge.
Hotel Policies
     These are general hotel policies for Hotel Icaria Barcelona. As they may vary per room type, please also
check the room description.
Check in14:00-00:00Check outUntil 12:00 hours
Children and
extra beds
     One child under 2 years stays free of charge in a baby cot (婴儿床).
     All children under 12 years stay free of charge when using existing bedding.
     One older child or adult is charged 34 per night and person in an extra bed.
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1. Hotel Icaria Barcelona allows you easy access to the following EXCEPT _____.
A. the stadiums where you can have sports
B. the seaside where you can relax yourself
C. the places where you can take trains or buses
D. the building where you can attend a religious service
2. The underlined word "encrypted" in the last section probably means "_____".
A. analysed
B. stored
C. collected
D. protected
3. It can be inferred from the advertisement that _____.
A. smoking is completely forbidden in the hotel
B. every room follows the same hotel policies
C. policies may be in your favour if you book 6 rooms
D. an extra bed can be provided for you free of charge
判断题