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Mobile Practical

Overview

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The Site:

(2)The Tower

(1)The Shelter

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} Tower:2{

Antennas:

(first ant. Or there are second ant.)

Microwave links:(transmites the E1s to the rest of sites)

Types of towers :1) Green field

2) Stub tower or Rooftop

3) Must

4) Monopole

5) Palm

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Types of Towers:

5) Mast :

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(*) Antennas:

Theoretically:Omni-directional or Sectorial

Practically:Alandeck , Kathrein & Power wave

(2 ports , 4 ports , 6 ports and 10 ports) Antennas Orientations:

(60 , 180 & 300 are usually in urban areas)

Antennas Tilts: (*) Mechanical Tilt

(*) Electrical Tilt

(*) Effective tilt = Elect.+ Mech.

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Antennas:Kathrein

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Mechanical and electrical tilt:

Mechanical TiltElectrical Tilt

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Power wave Antenna:

2 Downelectricaltilt

4 DownE.T

6 DownE.T

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ports Antenna:10The New

The 10 ports antenna works instead of using two antennas for the same sector,

( 4ports for the GSM 900 , 4 ports for the GSM 1800 & 2 ports for the 3G)

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Measuring the orientation of the Antenna:

1.Using the Binocular:

2.Using the Compass:

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(*)Microwave links:

Its diameters ranges from 0.3m to 2.4m according to thedistance to be covered.

In Egypt: we rarely use 3.8m

There must be a LOS between the two microwave links.

If there is a NLOS between them then the site will bedown

The E1s are transferred through the microwave link.

Every link has a RAU (Radio Access Unit) OR Two

RAUs (one operating and the other is Standby) The RAU acts as the Modulator & the demodulator for

the Incoming & the outgoing Signal.

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) Microwave link:1+1A (

RAU1

RAU1

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(*)NOTES:

(*) Multi-band powersplitter:

(*)Multi-band Indoor Omnidirectional antenna:

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2G Outdoor Cabinet:

GSM 900, GSM 1800 or GSM 1900

Capacity of 12 transceivers (12 TRU)

Weatherproof design

Temperature (-33C up to +45C)

Integrated 1 hour power backup

or external battery cabinet

External alarms available

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Outdoor Cabinets:Huawei

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heels):WnoellCCOW (

Used as a temporary solution to provide

Coverage or Capacity for certain duration

(Events).

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Notes: RBS (Radio Base Station) BTS(Base Transceiver Station)

HUB : Used to be allocated in the TE Centrals. Hult the cabinet (To transfer the calls to other TRU) (Local Mode)

Commissioning & Alignment

Site (900 MHz) (for Mobinil) Site (900 MHz) (for Vodafone)

DCS (1800 MHz) (for Mobinil) CO (1800 MHz) (for Vodafone)

The IDB (Installation Database) Config. is 4 or 6 or 8 or 12 TRUsfrom (4+4+4) till (12+12+12)

TRU (for Vodafone) DRI (for Mobinil)

Site Master: used for the detection of the position of the VSWR alarm

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Whatever...Wherever...Whenever