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3-1.8 ALCATEL BTS
Please see BTS front view , TRE, and Combiner in Fig. 3-6, 3-7.
Alcatel project was launched in DEC 2004. There were three types of BTS installation.
1. New site
2. Swap site
3. Redeployment site.
New site : - It is a purely new site either BSNL or Non BSNL.
Swap site: - Wherever Lucent BTS was already working and replaced by Alcatel. .
Redeployment site: - Installation of Lucent BTS at a new station after removing from
any working station which is swapped out.
There are three types of BTS: - BTS Load in Ampere;-
1. Indoor BTS. 1. 2/2/2 config. 10 Amps
2. Outdoor BTS 2. 3/3/3 config. 15 Amps
3. Micro BTS 3. 4/4/4 config. 20 Amps
Obtain TT- O, AT- 101, from M/S Alcatel and DE (Mobile) before proceeding for
A/T, Approved layout of equipment room, SACFA clearance.
As per Test schedule check and note down all infrastructure information and fill up in
Test sheet.
In Alcatel BTS, each TRE is assigned by a slot no and to recognize them, evaluate as
Follows:-
TRE no = 16 X sub rack no + slot no.
e.g. = 16 X 5 + 1
= 81
Here sectors are designated as N, P, Q instead α, β, γ in Lucent.
In this way N sector TRE no.s will be - 17, 20, 23, 26
P sector -------do-------- - 49, 52, 55, 58
Q sector --------do ------- - 81, 84, 87, 90.
A / T of Swap site:-
Note down – Site name, site code, NCC (National color code):- A specific no to
distinguish between two public land mobile networks (PLMN),
BCC (Base station color code):- A specific no within same PLMN,
LAC (Local area code)
- Type of Tower whether RTT / GBT / POLE and type of BTS as above.
(Roof top tower / Ground base tower, / three poles on terrace)
- All information regarding Tower, Antenna, Feeder cable and its protection.
- Type of interface between BTS and BSC, mostly OFC system and rarely
15 GHz M / W along with no. of E1.
- Confirm whether system acceptance tested or not?
- Equipment configuration as No of sectors, Racks, Rack Sl no, no of TRXS
(Trans Receive Modules) per sector.
- Cell ID, ARFCN (Absolute Radio Frequency Channel No.) And
Corresponding frequencies.( please see chart )
- Details of Power plant (SMPS, Battery, DG) and its adequacy, Peak hour
Load of the Exchange including BTS (BTS load 10 to 15 A depending
Upon no of TREs)
(52 Seiten)
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