Base Trans-Receiver Station (BTS) “BTS A-9100”, is radio frequency mobile communication product based on GSM technology. It is a set of equipments that facilitates wireless communication between user equipment (UE) and a network. A BTS in general consists of Trans-receiver module, Antenna Network Combiner, Controller (SUMA) & Alarm Extension System (XIBM). It is a self contained unit for transmitting / receiving signal for mobile communication.

Types of BTS:
1. Indoor BTS
2. Outdoor BTS
3. Dual Band BTS
4. Twin TRX BTS

• Shelter is a portable Sealed cabin made up of sandwiched insulated panels with polyurethane as filler material between galvanized pre-coated steel sheet.
• Floor is made up of 19mm thick marine plywood and is covered with PVC antistatic flooring.
• MS tube is reinforced inside floor panel for higher floor load capacity.
• Secondary slanting roof is provided to protect primary roof from direct sunlight and rainwater.
• Door is fixed with heavy-duty hinges. It is equipped with hydraulic closer & three way locking arrangement.
• Shelter is installed on suitable base frame of galvanized I-beam supported on concrete pedestal.
• ITI LIMITED Rae Bareli is manufacturing Prefabricated Shelter for housing of BTS & its accessories used in Telecom Mobile Service.

PRODUCT RANGE

The following three types of shelter of internal dimensions (all in mm) are being manufactured:
Type I : 3000 L x 2000 x W x 2500 H
Type II : 4000 L x 3500 x W x 3000 H
Type III : 5000 L x 3500 x W x 3000 H

PRODUCT RANGE

Square Lattice Type of RTT(as per GR) : - 10M, 15M, 20M Height.
Triangular Type RTT(SERC) : - 9M, 12M, 15M & 18M Height.

TECHNICAL SPECIFICATION

• Square Lattice type of RTT are manufactured as per GR No. GR/TWR-09 FEB. 2004
• Design of triangular type RTT is duly approved from Structural Engineering Research Center (SERC), Chennai.
• All members of RTT are made up of structural steel as per IS2062 Grade A & hot dip Zinc galvanized as per IS 4759.
• It can carry 6 Nos. GSM/WLL Antenna & 3 Nos. 0.6M dia Microwave Antenna.
• Basic design of RTT is for wind speed 200 Km/h. It can survive wind velocity up to of 210 km/h for short duration.

• Alcatel's new Twin TRX radio transceiver doubles the capacity of  existing equipment, while occupying the same space in the rack.
• The new Twin TRX is particularly  adapted for densely populated urban areas, with a maximum capacity  of 24 TRX per Base Station cabinet.
• Twin TRX transceivers can be installed in the full range of  Alcatel's indoor and outdoor BTS.

CDMA (Code Division Multiple Access) is a digital wireless technology to provide mobile communication. CDMA works by converting speech into digital information, which is then transmitted as a radio signal over a wireless network.  CDMA uses a unique code to distinguish each different call.  The receiving device is instructed to decipher only the data corresponding to a particular code to reconstruct the signal.  This enables many subscribers to share the same frequency band and, at the same time, without any cross talk or interference.

CDMA WLL technology provides option of limited as well as full mobility to the customers.  This helps to provide faster last mile connectivity, where laying of cables is difficult.